Angle output judging structure for engineering axle

Abstract

The utility model discloses a structure for judging angle output on an engineering axle, which comprises a lower shell, a rear cover is arranged at the bottom of the lower shell, a connecting rotating shaft is arranged at the top of the lower shell, a magnet block is fixedly connected in the connecting rotating shaft, a circuit module is arranged on the rear cover, three through holes are arranged on the circuit module, and the three through holes are communicated with the connecting rotating shaft. A magnet is arranged at the top of the circuit module, a low-pressure injection molding layer is arranged outside the circuit module in an injection molding mode, one side of the circuit module is connected with a connecting wire harness, one end of the connecting wire harness penetrates through the lower shell to be located on the outer wall of the lower shell, and a magnet is arranged in the lower shell and located at the top of the circuit module. According to the device, the service life is ensured, and the concentricity of the magnet block and the circuit module chip is ensured to be consistent, so that the error range of voltage output models in the state that the magnet block rotates to different angles is reduced, and different voltage output signals can be adapted through a mode of inputting different curves of the circuit module chip.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, and specifically relates to a structure for judging angle output on an engineering vehicle axle. Background Technique

[0002] A sensor can sense the measured information and transform the sensed information into an electrical signal or other required forms of information output according to certain rules to meet the requirements of information transmission, processing, storage, display, recording, and control, etc.; an angle sensor is a type of sensor, and this type of sensor is a main component applicable to the axle of an engineering vehicle for angle signal transmission. It mainly rotates the rotating shaft part, and then the magnet connected to the rotating shaft transmits magnetic induction signals at different angles to the Hall chip on the circuit module. Finally, the original mechanical combined magnetic field change is transformed into a corresponding voltage output signal, and it ensures the stability of the rotation angle through the stability of signal transmission.

[0003] The existing angle sensors use a voltage stabilizing chip plus a pin-connected magnetic induction chip contact sensor, which will affect the service life and cause a large deviation in the output signal. Therefore, improvement is needed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a structure for judging angle output on an engineering vehicle axle to solve the problems of short service life and large deviation in the output signal of the existing angle sensors proposed in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A structure for judging angle output on an engineering vehicle axle, including a lower housing, a rear cover is arranged at the bottom of the lower housing, a circuit module is arranged on the rear cover, a low-pressure injection molding layer is injection molded outside the circuit module, one side of the circuit module is connected with a connecting wire harness, one end of the connecting wire harness penetrates through the lower housing and is located on the outer wall of the lower housing, and a magnet block is arranged inside the lower housing, and the magnet block is located on top of the circuit module.

[0006] Preferably, a connecting rotating shaft is arranged on the top of the lower housing, and a magnet block is fixedly connected inside the connecting rotating shaft.

[0007] Preferably, three through holes are arranged on the circuit module, and a magnet block is arranged on top of the circuit module.

[0008] Preferably, the magnet block is fixed by dispensing with the connecting rotating shaft, and the concentricity of the magnet block and the circuit module is the same.

[0009] Preferably, string holes are arranged on both the circuit module and the lower housing, and one end of the connecting wire harness penetrates through the string holes and is located on the outer wall of the lower housing.

[0010] Preferably, the magnet block is in interference fit with the connecting rotating shaft.

[0011] Preferably, the rear cover and the lower housing are fixed by laser welding.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] (1) While ensuring the service life, the device can also ensure that the concentricity of the magnet block and the circuit module chip is consistent, thereby reducing the error range of the voltage output signal when the magnet block rotates to different angles. At the same time, by inputting different curves of the circuit module chip, different voltage output signals can be adapted.

[0014] (2) The low-pressure injection molding layer and the circuit module of the device are positioned and installed through three through holes. When the magnet block rotates through the connecting rotating shaft, the concentricity with the circuit module chip can be ensured, thereby reducing the error range of the voltage output signal when the magnet block rotates to different angles.

[0015] (3) The device is provided with a string hole on one side of the lower housing for the vertical placement of the connecting rotating shaft, facilitating the concentricity between the magnet block on the connecting rotating shaft and the circuit module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an exploded view of a structure for judging angle output on an engineering vehicle bridge of the utility model;

[0017] Figure 2 is a schematic diagram of the connection structure between the magnet block and the connecting rotating shaft of a structure for judging angle output on an engineering vehicle bridge of the utility model;

[0018] Figure 3 is a schematic diagram of the connection structure between the lower housing and the low-pressure injection molding layer of a structure for judging angle output on an engineering vehicle bridge of the utility model;

[0019] Figure 4 is a schematic diagram of the connection structure between the low-pressure injection molding layer and the circuit module of a structure for judging angle output on an engineering vehicle bridge of the utility model.

[0020] In the figure: 1. Connecting rotating shaft; 2. Lower housing; 3. Magnet block; 4. Circuit module; 5. Low-pressure injection molding layer; 6. Rear cover; 7. Connection wire harness; 8. String hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-4, the present utility model provides a technical solution: a structure for judging angle output on an engineering vehicle bridge, including a lower housing 2, a rear cover 6 is arranged at the bottom of the lower housing 2, a connecting rotating shaft 1 is arranged at the top of the lower housing 2, and a magnet block 3 is fixedly connected inside the connecting rotating shaft 1; glue application operation is carried out inside the connecting rotating shaft 1 of this structure, and the magnet block 3 and the connecting rotating shaft 1 are in interference fit and simultaneously adhesively fixed by controlling the pressure through a pressurizing device; the bottom of the connecting rotating shaft 1 is connected to the lower housing 2, and the rear cover 6 and the lower housing 2 are fixed by laser welding; the rear cover 6 of this structure can ensure the stable installation of the circuit module 4 and the low-pressure injection molding layer 5, and at the same time can seal the bottom of the lower housing 2 to achieve the purpose of protection; a circuit module 4 is arranged on the rear cover 6, three through holes are opened on the circuit module 4, and a magnet block 3 is arranged at the top of the circuit module 4; the low-pressure injection molding layer 5 and the circuit module 4 of this structure are positioned by three holes, and the waterproof and dustproof properties of the circuit module 4 can be improved through the low-pressure injection molding layer 5, and the service life of the circuit module 4 can be extended. The material of the low-pressure injection molding layer 5 is low-pressure injection molding material; through holes 8 are opened on both the circuit module 4 and the lower housing 2, and one end of the connecting wire harness 7 passes through the through hole 8 and is located on the outer wall of the lower housing 2; this structure can limit the connecting wire harness 7 through the through hole 8, and the connecting wire harness 7 and the circuit module 4 are integrally formed through the low-pressure injection molding layer 5, thereby ensuring the stability of the connection between the connecting wire harness 7 and the circuit module 4. The through hole 8 at the center of the lower housing 2 facilitates the vertical placement of the connecting rotating shaft 1. Threaded through holes are also provided on both sides of the lower housing 2 for locking screw positioning when the sensor is installed on the vehicle bridge; the circuit module 4 is externally injection-molded with a low-pressure injection molding layer 5, one side of the circuit module 4 is connected to a connecting wire harness 7, one end of the connecting wire harness 7 passes through the lower housing 2 and is located on the outer wall of the lower housing 2, a magnet block 3 is arranged inside the lower housing 2, and the magnet block 3 is adhesively fixed to the connecting rotating shaft 1, and the concentricity between the magnet block 3 and the circuit module 4 is consistent; this structure ensures the concentricity between the magnet block 3 and the circuit module 4 through the consistent concentricity, and at the same time, different voltage output model products are adapted through the special calibration of the circuit module 4 chip; the magnet block 3 and the connecting rotating shaft 1 are in interference fit; this method reduces the risk during the production process and also reduces the abnormal rate of the finished product; this structure can ensure the firm installation of the magnet block 3 and the connecting rotating shaft 1; the magnet block 3 is located at the top of the circuit module 4; the device of the present utility model ensures the concentricity of the structure through the three-through-hole positioning method in the circuit module 4, the cooperation of the structure and process during the installation of the magnet block 3, and the interference pressing of the low-pressure injection molding, and at the same time, different voltage output model products are adapted through the special calibration of the circuit module 4 chip. This method reduces the risk during the production process and also reduces the abnormal rate of the finished product.

[0023] Working principle: When using the structure for judging angle output on the engineering vehicle axle, first, perform device dispensing inside the connecting rotating shaft 1. Control the pressure through the pressurizing device to press-fit the magnet block 3 at the connecting rotating shaft 1. After the glue cures, place the connecting rotating shaft 1 at the lower housing 2. Then, install the formed circuit module 4, low-pressure injection molding layer 5, and connecting wire harness 7 into the lower housing 2. Finally, install the rear cover 6 and press-fit and fasten it by laser welding, so as to ensure the service life and stability of the device.

[0024] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A structure for judging angle output on an engineering vehicle bridge, including a lower housing (2), characterized in that: A rear cover (6) is provided at the bottom of the lower housing (2). A circuit module (4) is provided on the rear cover (6). A low-pressure injection molding layer (5) is injection molded outside the circuit module (4). A connection wire harness (7) is connected to one side of the circuit module (4). One end of the connection wire harness (7) penetrates through the lower housing (2) and is located on the outer wall of the lower housing (2). A magnet block (3) is provided inside the lower housing (2), and the magnet block (3) is located on top of the circuit module (4).

2. The structure for judging angle output on an engineering vehicle bridge according to claim 1, wherein: A connection rotating shaft (1) is provided at the top of the lower housing (2), and a magnet block (3) is fixedly connected inside the connection rotating shaft (1).

3. The structure for judging angle output on an engineering vehicle bridge according to claim 1, characterized in that: Three through holes are provided in the circuit module (4), and a magnet block (3) is provided on top of the circuit module (4).

4. A structure for judging angle output on an engineering vehicle bridge according to claim 1, characterized in that: The magnet block (3) is fixed to the connection rotating shaft (1) by dispensing, and the concentricity of the magnet block (3) and the circuit module (4) is the same.

5. The structure for judging angle output on an engineering vehicle bridge according to claim 1, characterized in that: String holes (8) are provided in both the circuit module (4) and the lower housing (2), and one end of the connection wire harness (7) penetrates through the string hole (8) and is located on the outer wall of the lower housing (2).

6. The structure for judging angle output on an engineering vehicle bridge according to claim 1, wherein: The magnet block (3) is in interference fit with the connection rotating shaft (1).

7. A structure for judging angle output on an engineering vehicle bridge according to claim 1, characterized in that: The rear cover (6) and the lower housing (2) are fixed by laser welding.

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