Protective support for thread end of rotating speed sensor

Abstract

The utility model provides a protection support for a thread end of a rotating speed sensor. The protection support comprises a metal shell, a support body is installed in the metal shell, a contact pin and a permanent magnet are arranged on the support body, and the contact pin and the permanent magnet are connected with the support body into a whole through injection molding; the upper end of the pin is connected with a wire harness which is connected with a wire end of the rotating speed sensor. The bracket is provided with a concave part, an enameled wire is wound on the outer edge of the concave part, and two ends of the enameled wire are welded on the pins. According to the protection support for the thread end of the rotating speed sensor, the exposed thread end of the rotating speed sensor is connected with the engine module through the support assembly installed in the metal shell, and the problem that the measuring result is inaccurate due to short circuit failure of the rotating speed sensor caused by the exposed thread end which is not easy to control is solved. The protection support is simple in structure and easy to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of brackets, in particular to a protective bracket for a rotation speed sensor wire end. Background Art

[0002] The speed sensor is a component of the engine management system. Mounted on the engine, it detects crankshaft position and speed. The speed sensor detects the teeth and slots of an iron signal wheel. Using the principle of electromagnetic induction, the rotation of the signal wheel causes the magnetic field at the sensing point inside the speed sensor coil to alternate. When the teeth are in front of the sensor, the magnetic flux through the coil increases, while when the slots are in front, the magnetic flux decreases. This change in magnetic field causes a change in the magnetic flux in the coil. This change in magnetic flux results in a change in the output signal voltage, which represents the crankshaft speed and position.

[0003] In existing technology, the housing of a speed sensor is made of metal. During installation into an engine system, some of the sensor's wires, which are difficult to control, become exposed. These exposed wires can easily cause the sensor to short-circuit and fail, leading to inaccurate measurement results. These exposed wires must be removed before testing, which is time-consuming and labor-intensive, with poor results. Utility Model Content

[0004] In response to the technical problems raised in the above background technology, the utility model provides a protection bracket for a rotation speed sensor wire end.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] The utility model provides a protective bracket for a rotation speed sensor wire end. The protective bracket comprises: a metal shell, a bracket mounted inside the metal shell, a pin and a permanent magnet provided on the bracket, and the pin and permanent magnet being integrally connected to the bracket by injection molding;

[0007] The upper end of the pin is connected to a wiring harness, which is connected to the engine module;

[0008] The bracket is provided with a recess, the outer edge of the recess is wound with an enameled wire, and both ends of the enameled wire are welded to the pin;

[0009] An iron core is installed inside the recess, and the iron core is connected to a wire end of a rotation speed sensor.

[0010] Preferably, a plastic sleeve is provided on the outside of the wiring harness, and the upper part of the plastic sleeve is in close contact with the metal shell.

[0011] Preferably, an oblique groove is provided at the lower end of the inner wall of the plastic sleeve, and the oblique groove is used to be screwed and clamped with the convex groove at the top end of the bracket.

[0012] Preferably, the metal shell is provided with a groove limiter, the bracket and the plastic sleeve are fixedly installed inside the metal shell through the groove limiter and the limit cap, and epoxy resin is poured into the metal shell.

[0013] Preferably, a polyester film is wrapped around the welding point between the enameled wire and the pin.

[0014] The positive progressive effect of the present invention is that the present invention provides a protective bracket for the speed sensor wire end. The protective bracket includes a metal shell, a bracket is installed inside the metal shell, a pin and a permanent magnet are provided on the bracket, and the pin and the permanent magnet are connected to the bracket as a whole through injection molding; the upper end of the pin is connected to a wiring harness, and the wiring harness is connected to the speed sensor wire end; a recess is provided on the bracket, and an enameled wire is wound around the outer edge of the recess, and the two ends of the enameled wire are welded to the pin. The protective bracket for the speed sensor wire end of the present invention is designed to be installed in the metal shell, so as to connect the exposed wire end of the speed sensor and the engine module, thereby avoiding the problem of inaccurate measurement results caused by the short circuit failure of the speed sensor due to the exposed wire end that is difficult to control. In addition, the protective bracket has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the protective bracket structure of the speed sensor wire head according to an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the detailed structure of the protection bracket for the speed sensor wire head according to an embodiment of the present utility model.

[0017] Legend: 1. Metal shell; 2. Bracket; 3. Pin; 4. Permanent magnet; 5. Wiring harness; 6. Enameled wire; 7. Plastic sleeve; 8. Iron core. DETAILED DESCRIPTION

[0018] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0019] Example 1

[0020] like Figure 1-2As shown, this embodiment provides a protective bracket for a speed sensor cable end. The protective bracket comprises a metal housing 1, a bracket 2, a pin 3, a permanent magnet 4, a wiring harness 5, and an enameled wire 6. The bracket 2 is mounted within the metal housing 1. The bracket 2 is provided with the pin 3 and the permanent magnet 4. The pin 3 and the permanent magnet 4 are integrally connected to the bracket 2 via injection molding. The upper end of the pin 3 is connected to the wiring harness 5, which is connected to the engine module. The bracket 2 has a recessed portion, with an enameled wire 6 wound around the outer edge of the recess. The two end connectors of the enameled wire 6 are welded to the pin 3. An iron core 8 is mounted within the recessed portion. The iron core 8 is connected to the speed sensor cable end to ensure signal data transmission from the speed sensor. The weld between the enameled wire 6 and the pin 3 is wrapped with polyester film. In this embodiment, the connectors at both ends of the enameled wire 6 pass through the channels on the bracket 2 and are welded to the pins 3 respectively, thereby preventing the enameled wire 6 from being damaged by contact with the metal shell 1; in order to avoid being damaged by contact with the metal shell 1, a polyester film is also wrapped around the welding point between the enameled wire 6 and the pin 3 to play an isolation and protection role.

[0021] In this embodiment, a plastic sleeve 7 is provided on the outside of the wiring harness 5, and the upper portion of the plastic sleeve 7 is in close contact with the metal housing 1. Specifically, after welding is completed, the plastic sleeve is installed on the outside of the wiring harness 5 to isolate the wiring harness 5 from the metal housing 1 and prevent short circuits.

[0022] In this embodiment, the lower end of the inner wall of the plastic sleeve 7 is provided with an oblique groove, which is used to screw and clamp with the convex groove at the top of the bracket 2. The oblique groove at the lower end of the inner wall of the plastic sleeve 7 and the convex groove at the top of the bracket 2 are tightly fixed together using a Kongming lock, and the convex groove at the top of the bracket 2 passes through the oblique groove and is screwed and clamped.

[0023] In this embodiment, the metal shell 1 is provided with a groove limiter, and the bracket 2 and the plastic sleeve 7 are fixedly installed inside the metal shell 1 through the groove limiter and the limit cap, and epoxy resin is poured into the inside of the metal shell 1, so that the bracket 2, the plastic sleeve 7, etc. become one, thereby ensuring the stability of the protective bracket of the speed sensor wire head of the utility model.

[0024] The present embodiment provides a protective bracket for the speed sensor wire end. The protective bracket includes a metal shell, a bracket installed inside the metal shell, a pin and a permanent magnet provided on the bracket, the pin and the permanent magnet are connected to the bracket as a whole through injection molding; the upper end of the pin is connected to a wiring harness, and the wiring harness is connected to the speed sensor wire end; a recess is provided on the bracket, and an enameled wire is wound around the outer edge of the recess, and the two ends of the enameled wire are welded to the pin. The protective bracket for the speed sensor wire end of the utility model is designed to be installed in the metal shell, so as to connect the exposed wire end of the speed sensor and the engine module, thereby avoiding the problem of short circuit failure of the speed sensor due to the exposed wire end that is difficult to control, resulting in inaccurate measurement results. In addition, the protective bracket has a simple structure and is easy to operate.

[0025] The working principle of this utility model is that during use, a bracket assembly designed and installed in a metal housing 1 protects the speed sensor's exposed wire ends, which are difficult to control. This prevents the exposed wire ends from affecting the speed sensor and engine operation, causing short circuit failure and affecting measurement results. The speed sensor wire ends are connected to the iron core 8 of the protective bracket. The internal structure of the protective bracket is clamped and integrated by epoxy resin infusion. The wiring harness 5 of the protective bracket is then connected to the engine to transmit the speed sensor signal, protect the speed sensor signal output, and prevent short circuits.

[0026] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A protective bracket for a speed sensor wire end, characterized in that: The protective bracket comprises: a metal shell, a bracket is installed inside the metal shell, a pin and a permanent magnet are provided on the bracket, and the pin and the permanent magnet are connected to the bracket as a whole by injection molding; The upper end of the pin is connected to a wiring harness, which is connected to the engine module; The bracket is provided with a recess, the outer edge of the recess is wound with an enameled wire, and both ends of the enameled wire are welded to the pin; An iron core is installed inside the recess, and the iron core is connected to a wire end of a rotation speed sensor.

2. The protective bracket for the rotation speed sensor wire end according to claim 1, characterized in that: A plastic sleeve is provided on the outside of the wiring harness, and the upper portion of the plastic sleeve is in close contact with the metal shell.

3. The protective bracket for the rotation speed sensor wire end according to claim 2, characterized in that: An oblique groove is provided at the lower end of the inner wall of the plastic sleeve, and the oblique groove is used for screwing and clamping with the convex groove at the top end of the bracket.

4. The protective bracket for the rotation speed sensor wire end according to claim 3, characterized in that: The metal shell is provided with a groove limiter, the bracket and the plastic sleeve are fixedly installed inside the metal shell through the groove limiter and the limit cap, and epoxy resin is poured into the metal shell.

5. The protection bracket for the rotation speed sensor wire end according to claim 1, characterized in that: A polyester film is wrapped around the welding point between the enameled wire and the pin.

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