CN204535649U - The improvement sensing apparatus of starter-generator - Google Patents

Abstract

The utility model is about a kind of improvement sensing apparatus of starter-generator, and starter-generator comprises a rotor and a stator, connects a bent axle of an engine, and sensing apparatus comprises a sensing structure main body and plural Hall perceptron.Sensing structure main body has at least one register pin and at least one through hole, and the corresponding clamping one of each register pin is arranged at the pilot hole on an engine casing, and each through hole locks to be arranged to one with a Luo Gu mechanism correspondence and engine casing locks hole.Plural number Hall perceptron is fixedly arranged in sensing structure main body, and each Hall perceptron has a concaveconvex structure, in order to engage stator each winding between gap.Therefore, sensing apparatus is controlled, on highly accurate position, reduce the error in measurement of crank up angle.

Description

Improved sensing device for starter generator

technical field

The utility model relates to an improved sensing device for a starter generator, in particular to a sensing device suitable for an engine system of a motor vehicle.

Background technique

The stator of the rotary motor of the traditional automobile and motorcycle engine is positioned with the center column on the engine box through the inner hole formed by the silicon steel sheet on the stator, and then the stator is installed to the engine box by passing through the locking hole on the stator with a screw or other screw fixing mechanism physically. However, because the traditional stator is only responsible for the function of power generation, it is only necessary to consider the concentricity with the rotor during installation to ensure that the stator and rotor have an even running gap. As for the stator installation angle caused by the clearance between the locking screw and the locking hole Errors do not cause functional problems in power generation.

Please refer to Figure 5, which is a schematic diagram of the configuration defects of the existing sensing device. As mentioned above, the stator 912 is prone to produce deviation angle θ variation due to the clearance between the screw fixing mechanism 913 and the locking hole 914, which increases the measurement. risk of error. Therefore, when the generator also has the function of a starter, a crank angle sensor is required to detect the crank angle position, so that the crank angle can be further controlled, and the engine can be started more easily. Therefore, in order to precisely control the angular position of the crankshaft, higher positioning and precision are also required in the stator installation.

Utility model content

The main purpose of this utility model is to provide an improved sensing device for starting the generator, because with the progress of the times, when the generator connected to the crankshaft of the engine also has the function of a starter, the control of the crankshaft angle will be more efficient. Important, and therefore the stator needs higher positioning and precision in installation, so that the sensing and control of the crankshaft angle can be more precise, and the engine can be started more smoothly.

In order to achieve the above-mentioned purpose, the improved sensing device of the starter generator of the present invention is suitable for a new generation of integrated starter and generator (Integrated Starter and Generator, ISG). When the system starts, it will be in the motor mode first. After the energy supplied by the battery and the control of the three-phase inverter, the engine can be accelerated. In addition, when the engine reaches a certain speed, the circuit automatically switches to generator mode to charge the battery. The starter generator includes a rotor and a stator, connected to a crankshaft of an engine, and in order to grasp the timing of engine startup and power generation and calculate the timing of fuel injection and ignition, a sensing device must be installed in the starter generator , which is mainly used to detect the running angle of the motor and the rotation angle of the crankshaft, including a sensing structure main body and a plurality of Hall sensors. The sensing structure main body has at least one positioning pin and at least one through hole, and each positioning pin corresponds to a positioning hole provided on an engine case, and each through hole is correspondingly locked to a device by a screw fixing mechanism. The locking holes on the engine case. Therefore, the main body of the sensing structure is provided with a positioning pin and a through hole for locking, so that the positioning and locking functions can be performed more accurately, and the measurement error of the crankshaft rotation angle can be reduced. The plurality of Hall sensors are fixed on the main body of the sensing structure, and each Hall sensor has a concave-convex structure for engaging the gap between each winding of the stator. Therefore, in addition to being fixed on the main body of the above-mentioned sensing structure, the Hall sensor can also strengthen the overall tightness by being engaged with the gap between each winding of the stator, which helps to improve the angle detection of the sensing device. Measured accuracy.

Wherein, the sensing device can be located between the stator and the engine case. Therefore, the sensing device is disposed on the front and rear first surfaces and the second surface to respectively position and engage with the stator and the engine case to increase the overall tightness.

In addition, the stator can be locked on a central column of the engine case. The stator is fixed on the side wall of the engine case, and the rotor is sleeved on the stator as the pivot center of the starter motor.

The above-mentioned screw fastening mechanism can be a screw or a bolt, and its size needs to cooperate with the through hole of the main body of the sensing structure and the locking hole on the engine case, so as to achieve a better locking effect.

Both the above summary and the following detailed description are exemplary in order to further illustrate the present invention. Other purposes and advantages of the present utility model will be described in the following descriptions and illustrations.

Description of drawings

Fig. 1 is an exploded view of a starter generator and a sensing device in a preferred embodiment of the present invention.

Fig. 2a is a structural perspective view of the first surface of the sensing device in a preferred embodiment of the present invention.

Fig. 2b is a structural perspective view of the second surface of the sensing device in a preferred embodiment of the present invention.

Fig. 3 is a cross-sectional view of a starter generator and a sensing device in a preferred embodiment of the present invention.

Fig. 4 is a combined perspective view of a starter generator and a sensing device in a preferred embodiment of the present invention.

FIG. 5 is a schematic diagram of configuration defects of a conventional sensing device.

【Symbol Description】

1 Start generator 10 Engine

11 Rotor 12 Stator

121 Winding 13 Crankshaft

14 Engine case 141 Positioning hole

142 Locking hole 143 Center column

2 Sensing device 21 Sensing structure main body

211 Locating pin 212 Through hole

22 Hall sensor 221 Concave-convex structure

3 Screw Mechanism 40 First Surface

41 Second Surface 912 Stator

913 Screw Mechanism 914 Locking Hole

θ Deviation angle

Detailed ways

In order to facilitate those of ordinary skill in the art to understand and realize the utility model, the embodiments of the utility model are now described in conjunction with the accompanying drawings.

Please refer to FIG. 1 , which is an exploded view of a starter generator and a sensing device in a preferred embodiment of the present invention. As shown in FIG. 1 , an improved sensing device for a starter generator is shown in the figure. The starter generator 1 includes a rotor 11 and a stator 12 , and the stator 12 is finally locked on a central column of an engine case 14 143 , the rotor 11 is sleeved on the stator 12 as the pivot center of the starter motor.

The sensing device 2 includes a sensing structure main body 21 and four Hall sensors 22 for detecting the running angle of the motor and the rotation angle of the crankshaft, so as to accurately determine the timing of fuel injection and ignition of the engine. Please refer to FIG. 2a and FIG. 2b at the same time, which are the perspective view of the structure of the first surface and the structure perspective view of the second surface of the sensing device according to the preferred embodiment of the present invention. In this embodiment, the sensing structure main body 21 has a first surface 40 and a second surface 41 on the front and back, and four Hall sensors 22 are fixedly connected to the first surface 40. As shown in FIG. 2a, each Hall sensor The perceptron 22 has a concave-convex structure 221, which can be inserted into the gap between each winding 121 of the stator 12 for fastening and fixing.

Next, as shown in FIG. 2 b , three positioning pins 211 are fixedly connected to the sensing structure main body 21 on the second surface 41 , which are small protrusions of a cylinder, and are used to engage with corresponding positioning holes provided on an engine case 14 141, used as an auxiliary positioning. In addition, the sensing structure main body 21 on the second surface 41 further includes two through holes 212, and each through hole 212 is correspondingly locked to the locking hole 142 provided on the engine case 14 by a screw fixing mechanism 3, as shown in FIG. 1 As shown, in this embodiment, the screw fastening mechanism 3 is a screw, which provides a better locking effect.

In order to reduce the problem of angular error variation of the stator 12 and the sensing device 2 during installation, the utility model provides an improved sensing device for starting the generator. The assembly steps are as follows: first, the positioning of the second surface 41 of the sensing device 2 After the pin 211 fits into the corresponding positioning hole 141 on the engine case 14, the through hole 212 of the sensing device 2 is pierced through the through-hole 212 of the sensing device 2 by using a screw fixing mechanism 3 such as a screw, and is locked on the locking hole 142 of the engine case 14. , complete the first-stage fixing work of the sensing device 2 and the engine case 14. Next, the gap between each winding 121 of the stator 12 is fitted with the corresponding concave-convex structure 221 of the sensing device 2. In this way, the stator 12 and the sensing device can be initially positioned, and then the stator 12 can be locked and fixed. To the engine case 14, complete the final positioning. Finally, a rotor 11 is sheathed on the stator 12 and connected to a crankshaft 13 of the engine 10 as a pivoting center of the starter motor. As shown in Fig. 3 and Fig. 4, it is a cross-sectional view and a combined perspective view of the starter generator and the sensing device in a preferred embodiment of the present invention. The figure reveals the corresponding relationship between the concave-convex structure 221 and the engagement of the stator, so that the corresponding configuration relationship of the starter generator 1 , the sensing device 2 and the engine crankshaft 13 can be clarified. In this embodiment, the sensing device 2 is located between the stator 12 and the engine case 14, so that the positioning and locking functions can be performed more accurately, and the measurement error of the crankshaft rotation angle can be reduced.

Although the utility model has been described by the embodiments, those of ordinary skill in the art know that, without departing from the spirit and essence of the utility model, the utility model can have many deformations and changes, and the scope of the utility model is defined by The appended claims are defined.

Claims (4)

1. an improvement sensing apparatus for starter-generator, is characterized in that, this starter-generator comprises a rotor and a stator, connects a bent axle of an engine, and this sensing apparatus, in order to detect the angle of revolution of this bent axle, comprising:

One sensing structure main body, has at least one register pin and at least one through hole, and this each corresponding clamping one of register pin is arranged at the pilot hole on an engine casing, and this each through hole locks to be arranged to one with a Luo Gu mechanism correspondence and this engine casing locks hole; And

Plural number Hall perceptron, it is fixedly arranged in this sensing structure main body, and each Hall perceptron has a concaveconvex structure, in order to engage this stator each winding between gap.

2. the improvement sensing apparatus of starter-generator as claimed in claim 1, it is characterized in that, this sensing apparatus is between this stator and this engine casing.

3. the improvement sensing apparatus of starter-generator as claimed in claim 1, it is characterized in that, this stator is locked on a newel of this engine casing.

4. the improvement sensing apparatus of starter-generator as claimed in claim 1, it is characterized in that, this Luo Gu mechanism is screw or bolt.