Motor type passive starter

Abstract

The application relates to a motor type passive starter, which comprises a sealed cylindrical shell, an insulating winding column, a spring fixing part, a tension spring, a magnetic steel, a coil winding, a resistor and two lead-out wires; the coil winding is wound on the outer circumferential surface of the rear part of the insulating winding column; the insulating winding column is provided with a sliding channel penetrating through both ends of the insulating winding column in the axial direction; the spring fixing part is installed at the rear end opening of the sliding channel; the tension spring and the magnetic steel are arranged in the sliding channel, the rear end of the tension spring is connected with the spring fixing part, the front end of the tension spring is connected with the rear end of the magnetic steel, and the front end and the rear end of the magnetic steel are respectively provided with N and S poles; the resistor is connected at both ends of the coil winding to form a closed loop, and the two lead-out wires are respectively connected with both ends of the resistor and extended to the outside of the cylindrical shell. The application can generate an electric signal for triggering starting under acceleration or deceleration conditions, realize passive starting, and can adjust the triggering conditions according to actual requirements to achieve the purpose of adjusting the output electric signal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of starter, in particular to a motor type passive starter. BACKGROUND

[0002] At present, the starter is needed to realize starting in the ignition device of high-speed rotating production equipment, forging and pressing equipment, centrifuge, aerospace equipment and automatic carrier, however, most of the existing starters adopt sensor to generate starting signal, the signal is weak, needs to be amplified, and needs to be connected with special power supply (such as thermal battery or chemical battery) to generate current signal for integrated circuit, and cannot realize true passive starting. Although there is a passive starter capable of realizing passive starting in the prior art, however, the passive starter generally adopts compressed gas or relies on chemical substance change to generate electric signal for triggering starting, the specific structure and control method are relatively complex, and has high requirement on triggering condition, resulting in narrow adaptation range. In addition, there is no passive starter taking acceleration and deceleration as triggering condition in the prior art. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a motor type passive starter, which not only has simple and compact structure, small volume, but also can generate electric signal for triggering starting under acceleration or deceleration condition, realize passive starting, and can adjust the triggering condition according to actual demand to achieve the purpose of adjusting output electric signal. The technical scheme adopted is as follows:

[0004] A motor type passive starter, characterized in that: comprising a sealed cylindrical shell, an insulating winding column, a spring fixing piece, a tension spring, a magnetic steel, a coil winding, a resistor and two lead-out wires; the insulating winding column is fixedly installed in the cylindrical shell along the axial direction of the cylindrical shell; the coil winding is wound on the outer peripheral surface of the rear part of the insulating winding column; the insulating winding column is provided with a sliding channel penetrating through both ends of the insulating winding column along the axial direction; the spring fixing piece is installed at the rear end opening of the sliding channel; the tension spring and the magnetic steel are both arranged in the sliding channel, the rear end of the tension spring is connected with the spring fixing piece, the front end of the tension spring is connected with the rear end of the magnetic steel, the sum of the lengths of the tension spring and the magnetic steel is less than the length of the sliding channel, the front end and the rear end of the magnetic steel respectively have N-pole and S-pole; the resistor is connected at both ends of the coil winding to form a closed loop, and the two lead-out wires are respectively connected with both ends of the resistor and extended to the outside of the cylindrical shell.

[0005] When the aforementioned passive starter is applied to a high-speed moving object, as the object accelerates or decelerates during its movement, the magnet moves in the sliding channel due to inertia, compressing or stretching the tension spring. When the acceleration or deceleration is removed, under the action of the tension spring, the magnet is ejected from the sliding channel corresponding to the coil winding from back to front, or from front to back, compressing the tension spring and entering the sliding channel corresponding to the coil winding before being ejected from back to front. During this process, the magnetic flux in the coil winding changes continuously, generating an electromotive force at both ends of the coil winding, which is output through the lead wire. Connecting the lead wire to the switch circuit that needs to be controlled allows control of the switching circuit's on / off state, thus achieving the starting function. Of course, since some objects have relatively large acceleration and deceleration, completing acceleration and deceleration instantaneously, the current generated by the passive starter is also relatively large, and it can be directly used as the starting current for a micro motor. This type of passive starter consists of only a cylindrical shell, insulated winding posts, spring fixing components, a tension spring, a magnet, coil windings, and two lead wires. Its simple and compact structure and small size make it suitable for many types of high-speed moving objects, such as high-speed rotating production equipment, forging equipment, centrifuges, and training bullets. It can even be used to start ignition devices in aerospace equipment and automated guided vehicles. This passive starter allows for adjustment of the output electrical signal by modifying the elastic coefficient and length of the tension spring, as well as the mass of the magnet, according to actual application conditions, particularly acceleration, deceleration, and gravitational acceleration. Furthermore, it can be controlled by adding a rectifier circuit to extract positive or negative electrical signals as the starting signal. A filter circuit can also be added to filter out the high-frequency weak signals generated during back-and-forth vibration. Finally, a comparator or other shaping circuit can be added to convert the generated sine wave into a square wave starting signal.

[0006] In the preferred embodiment, the cross-sectional shape of the tension spring, the magnet, and the sliding channel are all circular.

[0007] In a further preferred embodiment, the outer diameters of the tension spring and the magnet are matched with the inner diameter of the sliding channel. By setting the outer diameters of the tension spring and the magnet to match the inner diameter of the sliding channel, the sliding channel provides better guidance and alignment for the movement of the tension spring and the magnet, resulting in smoother movement of the tension spring and the magnet.

[0008] In a preferred embodiment, an annular winding groove is provided on the rear outer circumferential surface of the insulated winding post, and the coil winding is wound in the annular winding groove. This structure allows for the coil winding to be positioned within the annular winding groove, enhancing the overall structural stability.

[0009] In the preferred embodiment, the motor passive starter further comprises a metal connecting cylinder, the front end of the metal connecting cylinder is a closed end, the rear end of the metal connecting cylinder is an open end, the rear end of the metal connecting cylinder is sleeved outside the front part of the insulating winding post, and the inner cavity of the metal connecting cylinder constitutes an extension section of the sliding channel. With this structure, the length of the insulating winding post can be appropriately reduced, and the metal connecting cylinder is added as an extension section of the sliding channel. On the basis of ensuring that the movement of the magnetic steel is not limited by the front end, the magnetic field is shielded at the extension section of the sliding channel, thereby reducing a lot of chaotic weak electric signals.

[0010] In the further preferred embodiment, the motor passive starter further comprises a locking screw, the metal connecting cylinder is sleeved in the front part of the cylindrical shell, the front end of the cylindrical shell is provided with a connecting through hole, the front end of the metal connecting cylinder is provided with a locking screw hole, the shank of the locking screw passes through the connecting through hole and is threadedly connected with the locking screw hole, and the metal connecting cylinder and the head of the locking screw jointly clamp the front end of the cylindrical shell. With this structure, the metal connecting cylinder can be fixedly installed in the cylindrical shell through the locking screw, so that the installation of the metal connecting cylinder is simpler and more convenient.

[0011] In the still further preferred embodiment, the outer side wall of the metal connecting cylinder is provided with a guide positioning groove, and the inner side wall of the cylindrical shell is provided with a guide positioning strip matched with the guide positioning groove. With this structure, the installation of the metal connecting cylinder is simpler and more convenient through the cooperation between the guide positioning strip and the guide positioning groove, and the relative position between the metal connecting cylinder and the cylindrical shell after installation is stable.

[0012] Generally, the materials of the cylindrical shell and the metal connecting cylinder are stainless steel, and the material of the insulating winding post is plastic. The materials of the cylindrical shell and the metal connecting cylinder are stainless steel, which can shield the influence of the external magnetic field and avoid the generation of chaotic electric signals.

[0013] In the preferred embodiment, the motor passive starter further comprises two output terminals, the two output terminals are arranged on the outer circumferential surface of the front part of the insulating winding post, the two output terminals are respectively connected with two ends of the coil winding through electric wires, and the two lead-out wires are respectively connected with the two output terminals.

[0014] The motor passive starter of the present application is composed of a cylindrical shell, an insulating winding column, a spring fixing part, a tension spring, a magnetic steel, a coil winding and two lead-out wires. The structure is simple and compact, and the volume is very small. It can be applied to many types of high-speed moving objects, such as high-speed rotating production equipment, forging and pressing equipment, centrifuges, bullets for shooting training, etc. It can even be applied to the ignition starter of aerospace equipment and automatic vehicles. Moreover, the elastic coefficient and length of the tension spring and the mass of the magnetic steel can be adjusted according to the actual application, especially the acceleration, deceleration, gravitational acceleration, etc. to adjust the output electric signal. In addition, the positive or negative electric signal can be intercepted as a starting signal by adding a control of a rectifier circuit. The high-frequency weak signal generated during vibration can be filtered by adding a filter circuit. The positive wave generated can be converted into a square wave starting signal by adding a comparator or other shaping circuit. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of a preferred embodiment of the present application. DETAILED DESCRIPTION

[0016] As shown in Figure 1 , the motor passive starter comprises a sealed cylindrical shell 1, an insulating winding column 2, a spring fixing part 3, a tension spring 4, a magnetic steel 5, a coil winding 6, a resistor (not shown in the figure) and two lead-out wires 8. The insulating winding column 2 is fixedly installed in the cylindrical shell 1 along the axial direction of the cylindrical shell 1. The coil winding 6 is wound on the outer circumferential surface of the rear part of the insulating winding column 2. The insulating winding column 2 is provided with a sliding channel 21 penetrating through both ends of the insulating winding column 2 along the axial direction. The spring fixing part 3 is installed at the rear end opening of the sliding channel 21. The tension spring 4 and the magnetic steel 5 are arranged in the sliding channel 21. The rear end of the tension spring 4 is connected with the spring fixing part 3, and the front end of the tension spring 4 is connected with the rear end of the magnetic steel 5. The sum of the lengths of the tension spring 4 and the magnetic steel 5 is less than the length of the sliding channel 21. The front and rear ends of the magnetic steel 5 have N and S poles, respectively. The resistor is connected at both ends of the coil winding 6 to form a closed loop. The two lead-out wires 8 are connected with both ends of the resistor and extend out of the cylindrical shell 1.

[0017] In this embodiment, the cross-sectional shape of the tension spring 4, the magnetic steel 5 and the sliding channel 21 is circular. The outer diameter of the tension spring 4 and the magnetic steel 5 matches the inner diameter of the sliding channel 21. By setting the outer diameter of the tension spring 4 and the magnetic steel 5 to match the inner diameter of the sliding channel 21, the sliding channel 21 plays a better guiding and channeling role for the movement of the tension spring 4 and the magnetic steel 5, making the movement of the tension spring 4 and the magnetic steel 5 more stable.

[0018] In the embodiment, the rear outer circumferential surface of the insulating winding post 2 is provided with an annular winding groove 22, and the coil winding 6 is wound in the annular winding groove 22. With the structure, the coil winding 6 can be limited by the annular winding groove 22, and the stability of the overall structure is enhanced.

[0019] The motor passive starter of the embodiment further comprises a metal connecting cylinder 9, the front end of the metal connecting cylinder 9 is a closed end, the rear end of the metal connecting cylinder 9 is an open end, the rear end of the metal connecting cylinder 9 is sleeved on the outer side of the front part of the insulating winding post 2, and the inner cavity of the metal connecting cylinder 9 constitutes the extension section 211 of the sliding channel 21. With the structure, the length of the insulating winding post 2 can be appropriately reduced, the metal connecting cylinder 9 is added as the extension section 211 of the sliding channel 21, the magnetic field is shielded at the extension section 211 of the sliding channel 21 on the basis of ensuring that the movement of the magnetic steel 5 is not limited by the front end, and thus many disordered weak electric signals are reduced.

[0020] The metal connecting cylinder 9 is sleeved in the front part of the cylindrical shell 1; the outer side wall of the metal connecting cylinder 9 is provided with a guide positioning groove 91, the inner side wall of the cylindrical shell 1 is provided with a guide positioning strip 11 matched with the guide positioning groove 91; the motor passive starter further comprises a locking screw 12, the front end of the cylindrical shell 1 is provided with a connecting through hole 13, the front end of the metal connecting cylinder 9 is provided with a locking screw hole 92, the shank of the locking screw 12 passes through the connecting through hole 13 and is threadedly connected with the locking screw hole 92, and the metal connecting cylinder 9 and the head of the locking screw 12 jointly clamp the front end of the cylindrical shell 1. With the structure, the installation of the metal connecting cylinder 9 is simpler and more convenient through the cooperation between the guide positioning strip 11 and the guide positioning groove 91, and the relative position between the metal connecting cylinder 9 and the cylindrical shell 1 is stable after installation; the metal connecting cylinder 9 is fixedly installed in the cylindrical shell 1 through the locking screw 12, and thus the installation of the metal connecting cylinder 9 is simpler and more convenient.

[0021] The materials of the cylindrical shell 1 and the metal connecting cylinder 9 are stainless steel, and the material of the insulating winding post 2 is plastic. The materials of the cylindrical shell 1 and the metal connecting cylinder 9 are stainless steel, which can shield the influence of external magnetic field and avoid disordered electric signals.

[0022] When the object is accelerated or decelerated during the movement, the magnetic steel 5 moves in the sliding channel 21 due to inertia and compresses or stretches the tension spring 4. When the acceleration or deceleration is removed, the magnetic steel 5 is ejected from the sliding channel 21 corresponding to the coil winding 6 from back to front or is compressed by the tension spring 4 from front to back and then is ejected from the sliding channel 21 corresponding to the coil winding 6 from back to front. In this process, the magnetic flux in the coil winding 6 changes constantly, an electromotive force is generated at both ends of the coil winding 6 and is output by the lead wire 8. When the lead wire 8 is connected to the switching circuit to be controlled, the switching circuit can be controlled to be turned on or off, thus playing a starting role. Of course, since the acceleration and deceleration of some objects are relatively large and the acceleration and deceleration are completed instantaneously, the current generated by the motor type passive starter is relatively large and can be directly used as the starting current of a micro motor. The motor type passive starter is composed of the cylindrical shell 1, the insulating winding column 2, the spring fixing part 3, the tension spring 4, the magnetic steel 5, the coil winding 6 and the two lead wires 8. The structure is simple and compact, the volume is very small, and the motor type passive starter can be applied to many types of high-speed moving objects, such as high-speed rotating production equipment, forging and pressing equipment, centrifuges, bullets for shooting training and the like, and even can be applied to the starting of ignition devices in aerospace equipment and automatic transport tools. According to the actual application, especially the actual conditions of acceleration, deceleration, gravitational acceleration and the like, the elastic coefficient and length of the tension spring 4 and the mass of the magnetic steel 5 can be adjusted to achieve the purpose of adjusting the output electric signal. In addition, a rectifier circuit can be added to control the interception of positive or negative electric signals as starting signals. A filter circuit can be added to filter the high-frequency weak signals generated during vibration. A comparator or other shaping circuit can be added to convert the generated positive wave into a square wave starting signal.

[0023] In addition, it should be noted that the specific embodiments described in the specification can have different names and the like, and any equivalent or simple changes made to the structure, features and principles described in the patent concept of the present application are included in the protection scope of the present application. Those skilled in the art can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, as long as they do not deviate from the structure of the present application or exceed the scope defined by the present claims, which should belong to the protection scope of the present application.

Claims

1. A passive starter for motors used on high-speed moving objects, characterized in that: The device includes a sealed cylindrical outer shell, an insulated winding post, a spring retainer, a tension spring, a magnet, a coil winding, a resistor, and two leads. The insulated winding post is fixedly installed in the cylindrical outer shell along its axial direction. The coil winding is wound on the outer circumference of the rear part of the insulated winding post. A sliding channel is provided in the insulated winding post, extending axially through both ends. The spring retainer is installed at the rear opening of the sliding channel. The tension spring and magnet are both located in the sliding channel; the rear end of the tension spring is connected to the spring retainer, and the front end of the tension spring is connected to the magnet. The rear end is connected, and the sum of the lengths of the tension spring and the magnet is less than the length of the sliding channel. The front and rear ends of the magnet have N and S poles, respectively. The resistor is connected to both ends of the coil winding to form a closed loop. Two leads are connected to both ends of the resistor and extend to the outside of the cylindrical shell. The motor-type passive starter also includes a metal connecting cylinder. The front end of the metal connecting cylinder is a closed end, and the rear end of the metal connecting cylinder is an open end. The rear end of the metal connecting cylinder is sleeved on the outside of the front part of the insulated winding post. The inner cavity of the metal connecting cylinder forms an extension of the sliding channel.

2. The passive starter for motors applied to high-speed moving objects according to claim 1, characterized in that: The cross-sectional shape of the tension spring, magnet, and sliding channel is circular.

3. A passive starter for motors applied to high-speed moving objects according to claim 2, characterized in that: The outer diameter of the tension spring and the magnet matches the inner diameter of the sliding channel.

4. A passive starter for motors applied to high-speed moving objects according to claim 1, characterized in that: The outer rear circumferential surface of the insulated winding post is provided with an annular winding groove, and the coil winding is wound in the annular winding groove.

5. A passive starter for motors applied to high-speed moving objects according to claim 1, characterized in that: The motor-type passive starter also includes a locking screw; the metal connecting sleeve is fitted in the front part of the cylindrical shell, the front end of the cylindrical shell is provided with a connecting through hole, the front end of the metal connecting sleeve is provided with a locking screw hole, the screw of the locking screw passes through the connecting through hole and is threadedly connected to the locking screw hole, and the head of the metal connecting sleeve and the locking screw together clamp the front end of the cylindrical shell.

6. A passive starter for motors applied to high-speed moving objects according to claim 1, characterized in that: The outer wall of the metal connecting cylinder is provided with a guide positioning groove, and the inner wall of the cylindrical shell is provided with a guide positioning strip that cooperates with the guide positioning groove.

7. A passive starter for motors applied to high-speed moving objects according to claim 1, characterized in that: The cylindrical outer shell and the metal connecting cylinder are made of stainless steel, and the insulating winding post is made of plastic.

8. A passive starter for motors applied to high-speed moving objects according to claim 1, characterized in that: The motor-type passive starter also includes two output terminals, which are disposed on the front outer circumferential surface of the insulated winding post. The two output terminals are respectively connected to the two ends of the coil winding via wires, and the two lead wires are respectively connected to the two output terminals.

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