Odometer sensor gear ring

Abstract

The utility model discloses an odometer sensor gear ring, which belongs to the technical field of sensors and comprises a body, the surface of the body is fixedly connected with signal teeth, the signal teeth are distributed on the surface of the body at equal angles, the interior of the body is fixedly connected with convex blocks, and the convex blocks are symmetrically distributed relative to the center of the body. A limiting column is fixedly connected to the surface of the body, the other end of the limiting column is movably connected with an isolation cover, a groove is formed in the body, and air holes and air grooves are formed in the surface of the body. According to the odometer sensor gear ring, the body is connected with the isolation cover, and the upper sweeping plate and the lower sweeping plate are attached to the surface of the body, so that damage to the body caused by foreign matter damage, environmental corrosion, signal faults and mechanical impact can be reduced, the stability of signals is enhanced, the influence of external electromagnetic interference on signal transmission of the body is reduced, and the service life of the odometer sensor gear ring is prolonged. And the reading accuracy of the odometer and the speedometer is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field, concretely is a mileage table sensor gear ring. BACKGROUND

[0002] A sensor is a kind of detection device, it can convert the non-electricity that is felt (such as temperature, pressure, light, gas concentration and so on Physical quantity or chemical component) into electric signal or other required form of output, to satisfy the transmission, processing, storage, display, record and control of information;

[0003] The main role of the mileage table sensor gear ring is to transmit the rotation information of the wheel to the mileage table sensor, and then convert the rotation signal into an electric signal, so that the instrument system can accurately calculate and display the vehicle speed and the driving mileage. In this process, the rotation of the gear ring will trigger the detection mechanism inside the sensor, producing corresponding electric signal output.

[0004] The mileage table sensor measures the speed of the wheel based on the principle of measuring rotation speed. The mileage table sensor corresponds to a gear ring. Currently, most domestic manufacturers still use traditional castings or 45 steel for hobbing and gear shaping machining production. The products are mostly 2-8 teeth, with weak signal sensitivity, material waste, and a single product weight of about (200-230) grams, which does not meet the development trend of automobile lightweight. The production efficiency is (150-200) per 8 hours, which is low and cannot meet the use needs, and the material performance is poor, and the production method is not mature.

[0005] In order to overcome the above defects, the prior art 1 (Chinese patent with application number CN201810688434.3 and application date of June 28, 2018) a kind of mileage table sensor gear ring and its manufacturing method, the inner hole of body has protrusion and elastic rubber block to facilitate installation, signal tooth has 64, grating accuracy increases 8-32 times, signal tooth has included angle A, left part edge of inner hole outward has included angle B and has recess, can be well adapted to mileage table sensor, set through hole group can reduce weight, ventilation and heat dissipation, good stability, set oil inlet slot to enter lubricating oil, and the signal gear ring made has excellent performance, good strength, and through first pressing straight, then sintering, after shaping, then machining, finally polishing, powder metallurgy process, mature and efficient manufacturing method, not easy to magnetize increase signal sensitivity, improve product accuracy, no cutting, low cost;

[0006] The above device cannot remove the stains on the surface of the body during use, causing distortion of the magnetic field, making the sensor receive incorrect signal frequency or amplitude, and thus causing inaccurate readings of the odometer and speedometer. In addition, the residual stains are adsorbed on the surface of the body for a long time, causing accelerated wear of the components and shortening the service life of the device. UTILITY MODEL CONTENTS

[0007] The purpose of the present utility model is to provide an odometer sensor ring gear to solve the problem raised in the above-mentioned background technology that the stains on the surface of the body cannot be removed, resulting in magnetic field distortion, causing the sensor to receive an erroneous signal frequency or amplitude, thereby resulting in inaccurate odometer and speedometer readings, and residual stains are adsorbed on the surface of the body for a long time, resulting in accelerated wear of components and shortening the service life of the device.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: an odometer sensor ring gear, comprising a body, a surface of the body having signal teeth fixedly connected thereto, the signal teeth being distributed at equal angles on the surface of the body, and a protrusion fixedly connected thereto inside the body;

[0009] The protrusions are symmetrically distributed about the center of the body;

[0010] The surface of the body is fixedly connected to a limiting column, and the other end of the limiting column is movably connected to an isolation cover;

[0011] A groove is formed inside the body.

[0012] Preferably, ventilation holes are provided on the surface of the main body, and ventilation grooves are provided on the surface of the main body.

[0013] Preferably, an oil groove is provided inside the main body.

[0014] Preferably, an inner circular hole is opened inside the body, and the inner circular holes are symmetrically distributed about the center of the body.

[0015] Preferably, an upper connecting rod is fixedly connected to the surface of the isolation cover, and an upper sweeping plate is fixedly connected to the surface of the upper connecting rod, and the upper sweeping plate is in contact with the surface of the groove.

[0016] Preferably, a lower connecting rod is fixedly connected to the surface of the isolation cover, and a lower sweeping plate is fixedly connected to the surface of the lower connecting rod, and the lower sweeping plate is in contact with the surface of the body.

[0017] Preferably, a sliding groove is provided inside the isolation cover, and the surface of the sliding groove is movably connected to the limiting column, and the end of the limiting column is convex.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the odometer sensor ring gear adopts a new structural design, the specific contents of which are as follows:

[0019] (1) the odometer sensor gear ring, through the connection of the body and the isolation cover, and the upper and lower sweep plates are attached to the surface of the body, not only can reduce the damage of the body due to foreign matter, environmental corrosion, signal failure and mechanical impact, but also enhance the stability of the signal, reduce the influence of external electromagnetic interference on the signal transmission of the body, and ensure the reading accuracy of the speedometer and the speedometer;

[0020] Further, the convex block ensures that the body can be quickly and accurately installed to the correct position during installation, realizes accurate installation, and further ensures that the gap between the signal tooth and the sensor meets the requirements, which is beneficial to the accurate transmission of the signal;

[0021] (2) the odometer sensor gear ring, the oil groove in the body, the lubricating oil in the oil groove can penetrate into the part to be lubricated through capillary action, gravity or other ways when the part moves, form an oil film, effectively reduce the friction, reduce the wear degree of the part, so that the part can run more smoothly, reduce the failure and damage caused by excessive wear;

[0022] Further, the upper and lower sweep plates can reduce the dirt on the surface of the groove and the body, so as to ensure the stable operation of the device in a clean environment, improve the working performance and prolong the service life of the device;

[0023] (3) the odometer sensor gear ring, the inner hole is arranged in the body, which can avoid the damage of the structure caused by excessive local stress, and the symmetrical distribution of the inner hole can help maintain the balance of the whole device under stress, so that the body can bear the force more stably, and the parts can work in a reasonable stress environment, and the stability of the device during work is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the schematic view of the body and signal tooth connection structure of the utility model;

[0025] Figure 2 It is the schematic view of the body and the vent hole connection structure of the utility model;

[0026] Figure 3 It is the schematic view of the body and the convex block connection structure of the utility model;

[0027] Figure 4 It is the schematic view of the upper connecting rod and the upper sweep plate connection structure of the utility model;

[0028] Figure 5 It is the schematic view of the body and the limiting column connection structure of the utility model;

[0029] Figure 6 It is the schematic view of the sliding groove and the limiting column connection structure of the utility model;

[0030] Figure 7 Figure 1 is a schematic diagram of the connection structure of the isolation cover and the sliding groove of the utility model.

[0031] In the figure: 1, the body; 2, signal tooth; 3, inner hole; 4, protruding block; 5, recess; 6, oil groove; 7, air passage; 8, air hole; 9, isolation cover; 10, upper connecting rod; 11, lower connecting rod; 12, upper sweeping plate; 13, lower sweeping plate; 14, limiting column; 15, sliding groove. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0033] Embodiment one: by setting the connection of the body 1, signal tooth 2 and limiting column 14, the stability of the device is improved, as shown in Figures 1-2 .

[0034] It comprises a body 1, the surface of the body 1 is fixedly connected with signal tooth 2, and the signal tooth 2 is distributed at equal angles on the surface of the body 1, and the inside of the body 1 is fixedly connected with protruding block 4;

[0035] The protruding block 4 is symmetrically distributed about the center of the body 1, the surface of the body 1 is fixedly connected with limiting column 14, and the other end of the limiting column 14 is movably connected with isolation cover 9, and the inside of the body 1 is provided with recess 5.

[0036] The surface of the body 1 is uniformly and equiangularly provided with signal tooth 2, and the equiangular distribution can ensure the regularity and stability of signal transmission, so that the sensor can accurately calculate the corresponding speed and distance according to the frequency of signal change, improve the working efficiency of the device, and the limiting column 14 can limit the position of the isolation cover 9 relative to the body 1, prevent unnecessary displacement or shaking of the isolation cover 9 during the operation of the device, and the protruding block 4 ensures that the body 1 can be quickly and accurately installed to the correct position during installation, realizes accurate installation, and further ensures that the gap between the signal tooth 2 and the sensor and other key parameters meet the requirements, which is conducive to the accurate transmission of signals.

[0037] In this embodiment, different from embodiment one, by setting the connection of air hole 8, air passage 7 and oil groove 6, the service life of the device is prolonged, as shown in Figure 3 .

[0038] The surface of the body 1 is provided with ventilation holes 8 and ventilation grooves 7 , the interior of the body 1 is provided with oil grooves 6 and inner circular holes 3 symmetrically distributed about the center of the body 1 .

[0039] An oil tank 6 is installed inside the main body 1. The lubricating oil in the oil tank 6 can penetrate into the parts that need lubrication through capillary action, gravity or other means when the parts move, forming an oil film, which effectively reduces friction and reduces the wear of the parts, so that the parts can operate more smoothly, reduce failures and damage caused by excessive wear, and extend the overall service life of the device. In addition, the lubricating oil can also take away some tiny metal debris, dust and other impurities generated during operation during the flow process, which plays a cleaning role. An inner circular hole 3 is opened inside the main body 1 to avoid local excessive force and structural damage. At the same time, the symmetrical distribution of the inner circular hole 3 helps to maintain the balance of the entire device when it is under force, so that the main body 1 can bear these forces more stably, ensure that each component works under a reasonable force environment, and reduce component deformation caused by uneven force.

[0040] Embodiment 3. In this embodiment, unlike the embodiment 2, the connection between the isolation cover 9, the lower sweeping plate 13 and the upper sweeping plate 12 is provided to reduce the residual stains on the surface of the body 1. Figures 4-7 As shown:

[0041] The surface of the isolation cover 9 is fixedly connected to an upper connecting rod 10, and the surface of the upper connecting rod 10 is fixedly connected to an upper sweeping plate 12, and the upper sweeping plate 12 is fitted with the surface of the groove 5. The surface of the isolation cover 9 is fixedly connected to a lower connecting rod 11, and the surface of the lower connecting rod 11 is fixedly connected to a lower sweeping plate 13, and the lower sweeping plate 13 is fitted with the surface of the body 1. A sliding groove 15 is provided inside the isolation cover 9, and the surface of the sliding groove 15 is movably connected to a limiting column 14, and the end of the limiting column 14 is convex.

[0042] The isolation cover 9 not only plays a protective role, but is also connected to the upper sweeping plate 12 and the lower sweeping plate 13 through a connecting rod, forming a linkage structure that can clean the surface of the main body 1. The limit column 14 is movably connected to the sliding groove 15 inside the isolation cover 9 to better achieve the function of reducing the residual stains on the surface of the main body 1. During the use of the device, dust and oil may accumulate on the surface of the groove 5. If these stains remain for a long time, they will affect the heat dissipation of the internal structure and aggravate the corrosion of components. The lower sweeping plate 13 and the upper sweeping plate 12 reduce the residual stains on the surface of the groove 5 and the main body 1, and ensure that the device operates stably in a relatively clean environment, thereby improving its working performance and service life.

[0043] The above is the working process of the entire device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0044] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. An odometer sensor gear ring, comprising a body (1), a surface of the body (1) being fixedly connected to signal teeth (2), the signal teeth (2) being distributed at equal angles on the surface of the body (1), and an interior of the body (1) being fixedly connected to a protrusion (4); Its characteristics are: The protrusions (4) are symmetrically distributed about the center of the body (1); The surface of the body (1) is fixedly connected to a limiting column (14), and the other end of the limiting column (14) is movably connected to an isolation cover (9); A groove (5) is provided inside the body (1).

2. The odometer sensor ring gear according to claim 1, characterized in that: The surface of the main body (1) is provided with ventilation holes (8), and the surface of the main body (1) is provided with ventilation grooves (7).

3. The odometer sensor ring gear according to claim 1, characterized in that: An oil groove (6) is provided inside the body (1).

4. The odometer sensor ring gear according to claim 1, characterized in that: An inner circular hole (3) is provided inside the body (1), and the inner circular holes (3) are symmetrically distributed about the center of the body (1).

5. The odometer sensor ring gear according to claim 1, characterized in that: An upper connecting rod (10) is fixedly connected to the surface of the isolation cover (9), and an upper sweeping plate (12) is fixedly connected to the surface of the upper connecting rod (10), and the upper sweeping plate (12) is in contact with the surface of the groove (5).

6. The odometer sensor ring gear according to claim 1, characterized in that: A lower connecting rod (11) is fixedly connected to the surface of the isolation cover (9), and a lower sweeping plate (13) is fixedly connected to the surface of the lower connecting rod (11), and the lower sweeping plate (13) is in contact with the surface of the body (1).

7. The odometer sensor ring gear according to claim 1, characterized in that: A sliding groove (15) is provided inside the isolation cover (9), and the surface of the sliding groove (15) is movably connected to the limiting column (14), and the end of the limiting column (14) is convex.

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