TT motor

Abstract

The utility model relates to the technical field of motors, in particular to a TT motor. The TT motor comprises a TT motor body, a coded disc, a photoelectric switch and a speed measuring circuit board, the TT motor body comprises an input shaft extending in the first direction and an output shaft extending in the second direction. The coded disc is connected with the input shaft and rotates along with the input shaft; the speed measuring circuit board is arranged on one side of the TT motor body in the second direction; the photoelectric switch is arranged on the speed measuring circuit board and is electrically connected with the speed measuring circuit board. The photoelectric switch and the code disc are correspondingly arranged so as to carry out photoelectric induction on the code disc. The TT motor measures the speed of the input shaft of the TT motor body through the combination of the coded disc and the photoelectric switch, and then determines the rotating speed of the output shaft according to the rotating speed of the input shaft. As the rotating speed of the output shaft is obviously slower than that of the input shaft, compared with direct speed measurement of the rotating speed of the output shaft, the TT motor can obviously improve the speed measurement precision, and can obviously save the cost and simplify the structure.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a TT motor. Background Art

[0002] TT motor is a commonly used accessory, for example, it can be used in programming vehicles.

[0003] There are currently two commonly used methods for detecting the speed of TT motors. The first method is to directly measure the speed of the output shaft through a code disk. This method is economical but has poor accuracy. The second method is to measure the speed of the input shaft through a Hall element. Although it has high accuracy, it is also very expensive.

[0004] Therefore, it is urgent to propose a speed measurement solution for TT motors that is both economical and high-precision. Utility Model Content

[0005] The purpose of this application is to provide a TT motor to solve, to a certain extent, the technical problem that the TT motor speed measurement solution in the prior art cannot take into account both economy and high precision.

[0006] The present application provides a TT motor, including a TT motor body, a code disc, a photoelectric switch and a speed measuring circuit board;

[0007] The TT motor body includes an input shaft extending in a first direction and an output shaft extending in a second direction;

[0008] The code disc is connected to the input shaft and rotates with the input shaft;

[0009] The speed measuring circuit board is arranged on one side of the TT motor body in the second direction;

[0010] The photoelectric switch is arranged on the speed measuring circuit board and is electrically connected to the speed measuring circuit board, and the photoelectric switch is arranged correspondingly to the code disk to perform photoelectric sensing on the code disk;

[0011] The first direction and the second direction are arranged crosswise.

[0012] In the above technical solution, further, the speed measuring circuit board is provided with a connecting through hole, and the hole wall of the connecting through hole is provided with a first conductive part and a second conductive part;

[0013] The TT motor body has a positive electrode sheet and a negative electrode sheet, both of which are located in the connecting through hole, the positive electrode sheet is electrically connected to the first conductive part, and the negative electrode sheet is electrically connected to the second conductive part.

[0014] In any of the above technical solutions, further, the speed measuring circuit board is provided with a connector on a board surface facing away from the TT motor body, and the connector is used for an external controller.

[0015] In any of the above technical solutions, further, the side wall of the TT motor body in the second direction is provided with a hanging ear, the speed measuring circuit board is provided with an avoidance through hole, and the hanging ear is located in the avoidance through hole.

[0016] In any of the above technical solutions, further, a mounting plane is provided on the side of the TT motor body in the second direction, a portion of the speed measuring circuit board is in contact with the mounting plane, and another portion of the speed measuring circuit board extends relative to the mounting plane and faces the input shaft along the second direction.

[0017] In any of the above technical solutions, further, the TT motor body is provided with the mounting planes on both sides in the second direction, and the speed measuring circuit board is detachably connected to any of the mounting planes.

[0018] In any of the above technical solutions, further, each of the mounting planes is provided with a first fastening portion, the speed measuring circuit board is provided with a second fastening portion, and the speed measuring circuit board is connected to any of the mounting planes via the first fastening portion and the second fastening portion.

[0019] In any of the above technical solutions, further, each of the mounting planes is provided with two of the first fastening parts, and the end of the speed measuring circuit board away from the photoelectric switch is provided with two of the second fastening parts, and the two second fastening parts are fastened and connected one by one with the two first fastening parts of any of the mounting planes.

[0020] In any of the above technical solutions, further, the speed measuring circuit board is integrated with a filter module, and the filter module is electrically connected to the receiving end of the photoelectric switch.

[0021] In any of the above technical solutions, further, the speed measuring circuit board is integrated with an indicator light, and the indicator light is connected in parallel with the photoelectric switch.

[0022] Compared with the prior art, the beneficial effects of this application are:

[0023] The TT motor provided in the present application measures the speed of the input shaft of the TT motor body by combining a code disk and a photoelectric switch, and then determines the output shaft speed based on the input shaft speed. Since the output shaft speed is significantly slower than the input shaft speed, the TT motor can significantly improve the speed measurement accuracy compared to directly measuring the output shaft speed, and can significantly save costs and simplify the structure compared to the solution of using Hall elements to measure the speed. In addition, the code disk and the photoelectric switch are arranged at the input shaft of the TT motor body extending in the first direction, and the speed measurement circuit board electrically connected to the photoelectric switch is arranged on the side of the TT motor body in the second direction, so that the speed measurement circuit board is arranged away from the input shaft, which is convenient for observing the status of the input shaft and the code disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A first structural schematic diagram of a TT motor provided in an embodiment of the present application;

[0026] Figure 2 A second structural schematic diagram of the TT motor provided in an embodiment of the present application;

[0027] Figure 3 A third structural schematic diagram of the TT motor provided in an embodiment of the present application;

[0028] Figure 4 This is a power connection diagram of the photoelectric switch at the speed measurement circuit board of the TT motor provided in an embodiment of the present application.

[0029] Reference numerals:

[0030] 1-TT motor; 10-TT motor body; 100-input shaft; 101-output shaft; 102-installation plane; 103-first fastening part; 104-hanging ear; 105-positive electrode; 106-negative electrode; 11-speed measuring circuit board; 110-filter module; 1100-comparator; 1110-infrared light emitting diode; 1111-phototransistor; 111-avoidance through hole; 112-connector; 113-indicator light; 114-connection through hole; 12-code disk; 13-photoelectric switch; 14-second fastening part. DETAILED DESCRIPTION

[0031] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] See also Figures 1 to 4 As shown, an embodiment of the present application provides a TT motor 1 including a TT motor body 10 , a code disk 12 , a photoelectric switch 13 and a speed measuring circuit board 11 .

[0035] The TT motor body 10 includes an input shaft 100 extending along a first direction a and an output shaft 101 extending along a second direction b, that is, the axis of the input shaft 100 extends along the first direction a, and the axis of the output shaft 101 extends along the second direction b. Specifically, a reduction structure is integrated inside the TT motor body 10, so that the speed ratio of the input shaft 100 to the output shaft 101 is i, i is an integer greater than 1, and thus the speed of the output shaft 101 is less than the speed of the input shaft 100, for example, the transmission ratio i is 100.

[0036] The code disc 12 is connected to the input shaft 100 and rotates with the input shaft 100. Specifically, the code disc 12 is provided with a plurality of gratings arranged at equal intervals along its circumference, for example, 12 gratings arranged at equal intervals are provided in one circle.

[0037] The speed measuring circuit board 11 is arranged on one side of the TT motor body 10 in the second direction b, wherein the first direction a and the second direction b are arranged crosswise, that is, the first direction a and the second direction b are not parallel, for example, the first direction a and the second direction b are perpendicular, the first direction a is the axial direction of the input shaft, and the second direction b is the axial direction of the output shaft. Thus, the speed measuring circuit board 11 is arranged away from the input shaft 100, which is convenient for observing the status of the input shaft 100 and the code disk 12.

[0038] The photoelectric switch 13 is disposed on the speed measuring circuit board 11 and is electrically connected to the speed measuring circuit board 11. The photoelectric switch 13 and the code disk 12 are correspondingly disposed to perform photoelectric sensing on the code disk 12. Specifically, the speed measuring circuit board 11 not only provides an installation position for the photoelectric switch 13, but also can collect the photoelectric sensing information of the photoelectric switch 13, and determine the rotation speed of the input shaft 100 in combination with the grating structure parameters of the code disk 12, and then determine the rotation speed of the output shaft 101 in combination with the rotation speed ratio between the input shaft 100 and the output shaft 101.

[0039] Since the speed of the output shaft 101 is significantly slower than that of the input shaft 100, compared with directly measuring the speed of the output shaft 101, the TT motor 1 measures the speed of the input shaft 100, and then determines the speed of the output shaft 101 based on the speed of the input shaft 100, which can significantly improve the speed measurement accuracy. Furthermore, the TT motor 1 uses a code disk 12 in combination with a photoelectric switch 13 to achieve speed measurement, which can significantly save costs and simplify the structure compared to the solution of using Hall element speed measurement.

[0040] Optionally, the photoelectric switch 13 is a slot-type switch, and the photoelectric switch 13 includes a transmitting end and a receiving end electrically connected to the speed measuring circuit board 11 , and the code disk 12 is located between the transmitting end and the receiving end along the first direction a.

[0041] In this embodiment, the speed measuring circuit board 11 is provided with a connecting through hole 114 , and the hole wall of the connecting through hole 114 is provided with a first conductive portion and a second conductive portion.

[0042] The TT motor body 10 has a positive electrode sheet 105 and a negative electrode sheet 106, both of which are located in the connecting through hole 114, the positive electrode sheet 105 is electrically connected to the first conductive part, and the negative electrode sheet 106 is electrically connected to the second conductive part, so that the speed measuring circuit board 11 is electrically connected to the TT motor body 10.

[0043] Therefore, the speed measuring circuit board 11 has at least a first function of collecting photoelectric sensing information and a second function of controlling the TT motor body 10 .

[0044] Optionally, the first conductive part and the second conductive part are both conductive pads, the positive electrode sheet 105 is attached to and welded with the first conductive part, and the negative electrode sheet 106 is attached to and welded with the second conductive part. Further, the first conductive part and the second conductive part are respectively located on two opposite side walls of the connecting through hole, thereby avoiding short circuit and providing sufficient welding operation space.

[0045] In an optional scheme of this embodiment, a connector 112 is provided on the board surface of the speed measuring circuit board 11 facing away from the TT motor body 10. The connector 112 is used for an external controller to facilitate control of the TT motor body 10 through the external controller, including but not limited to start and close control, forward and reverse control, and speed regulation.

[0046] Optionally, the connector 112 is, for example, a socket, so that a plug of an external controller can be plugged in and out.

[0047] In an optional solution of this embodiment, a hanging ear 104 is provided on the side wall of the TT motor body 10 in the second direction b, so as to facilitate the fixed installation of the TT motor 1 through the hanging ear 104 .

[0048] The speed measuring circuit board 11 is provided with an avoidance through hole 111, and the hanging ear 104 is located in the avoidance through hole 111, so that the hanging ear 104 is avoided through the avoidance through hole 111, on the one hand, it can avoid the hanging ear 104 affecting the installation of the speed measuring circuit board 11, and on the other hand, it can avoid affecting the use of the hanging ear 104.

[0049] In an optional scheme of this embodiment, a mounting plane 102 is provided on the side of the TT motor body 10 in the second direction b, a portion of the speed measuring circuit board 11 is in contact with the mounting plane 102, and another portion of the speed measuring circuit board 11 extends out relative to the mounting plane 102 and faces the input shaft 100 along the second direction b, so that the speed measuring circuit board 11 can be stably supported by the mounting plane 102, thereby preventing the speed measuring circuit board 11 and the photoelectric switch 13, the first conductive part and the second conductive part thereon from shifting and shaking, thereby improving the control reliability and speed measurement accuracy of the TT motor body 10.

[0050] In an optional solution of this embodiment, mounting planes 102 are provided on both sides of the TT motor body 10 in the second direction b, and the speed measuring circuit board 11 is detachably connected to any mounting plane 102 .

[0051] Therefore, one mounting plane 102 can be selected from the mounting planes 102 on both sides according to actual needs, and then the speed measuring circuit board 11 can be installed on the selected mounting plane 102. In addition, the installation position of the speed measuring circuit board 11 can be adjusted according to needs, and it can be removed from one mounting plane 102 and then installed on the other mounting plane 102.

[0052] Optionally, the TT motor body 10 is provided with ears 104 on both sides along the second direction b, so that when the speed measuring circuit board 11 is installed on the mounting plane 102 on either side, the ears 104 on the same side can be accommodated by the avoidance through hole 111.

[0053] In an optional solution of this embodiment, each mounting plane 102 is provided with a first fastening portion 103, and the speed measuring circuit board 11 is provided with a second fastening portion 14. The speed measuring circuit board 11 is connected to any mounting plane 102 via the first fastening portion 103 and the second fastening portion 14. That is, the speed measuring circuit board 11 is fastened and connected to any mounting plane 102 via the first fastening portion 103 and the second fastening portion 14, so as to realize a detachable connection of the speed measuring circuit board 11 relative to each side mounting plane 102, and the disassembly and assembly operation is convenient and the connection is reliable.

[0054] Optionally, the first fastening part 103 is a smooth hole, and the second fastening part 14 can be, for example, a self-tapping screw. The self-tapping screw is screwed into the smooth hole to form an internal thread connected to the self-tapping screw in the smooth hole, thereby realizing a fastened connection between the first fastening part 103 and the second fastening part 14; or the first fastening part 103 is a nut, and the second fastening part 14 is a machine screw. The nut and the machine screw are threadedly connected to each other, thereby realizing a fastened connection between the first fastening part 103 and the second fastening part 14.

[0055] In this embodiment, each mounting plane 102 is provided with two first fastening parts 103, and the end of the speed measuring circuit board 11 away from the photoelectric switch 13 is provided with two second fastening parts 14, and the two second fastening parts 14 are fastened and connected with the two first fastening parts 103 of any mounting plane 102 one by one.

[0056] Thus, the disassembly operation area of ​​the second fastening part 14 is far away from the photoelectric switch 13, which is beneficial to protect the photoelectric switch 13 from being damaged by the disassembly operation. In addition, the two first fastening parts 103 are fastened and connected to the two second fastening parts 14 in a one-to-one correspondence, which can further improve the connection reliability.

[0057] In an optional solution of this embodiment, the speed measuring circuit board 11 is integrated with a filter module 110 , and the filter module 110 is electrically connected to the receiving end of the photoelectric switch 13 , so that the rotation speed of the input shaft 100 can be determined more accurately.

[0058] Alternatively, if Figure 4As shown, the transmitting end of the photoelectric switch 13 includes an infrared light emitting diode 1110, pin 1 of the infrared light emitting diode 1110 is an anode, the anode is connected to a 3V3 voltage through a resistor R2, and pin 2 of the infrared light emitting diode 1110 is a cathode, which is grounded; the receiving end of the photoelectric switch 13 includes a phototransistor 1111, pin 3 of the phototransistor 1111 is a collector, the collector is connected to a 3V3 voltage through a resistor R3, and pin 4 of the phototransistor 1111 is an emitter, which is grounded.

[0059] The filtering module 110 includes a comparator 1100, a resistor R1 and a resistor R5. Pin 1 of the comparator 1100 is a non-inverting input terminal, which is electrically connected to the collector of the phototransistor 1111; Pin 2 is a ground terminal, which is grounded; Pin 3 of the comparator 1100 is a reverse input terminal, which is connected to a 3V3 voltage through resistor R5 and is grounded through resistor R1; Pin 4 of the comparator 1100 is an output terminal, which is used to output a filtered signal for determining the rotational speed of the input shaft 100 and the output shaft 101.

[0060] In an optional solution of this embodiment, in order to facilitate determination of whether the speed measuring circuit board 11 is in a powered working state, the speed measuring circuit board 11 is integrated with an indicator light 113, and the indicator light 113 is connected in parallel with the photoelectric switch 13, that is, one end of the indicator light 113 is grounded, and the other end is connected to a 3V3 voltage through a resistor R4.

[0061] Optionally, the indicator light 113 is an LED.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them; although the utility model is described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein by equivalent; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the utility model. In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments instead of other features, the combination of features of different embodiments means that they are within the scope of the utility model and form different embodiments. For example, any one of the embodiments claimed for protection can be used in any combination. The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the utility model, and should not be regarded as an admission or in any form of implication that the information constitutes prior art known to those skilled in the art.

Claims

1. A TT motor, characterized in that: Including TT motor body, encoder, photoelectric switch and speed measuring circuit board; The TT motor body includes an input shaft extending in a first direction and an output shaft extending in a second direction; The code disc is connected to the input shaft and rotates with the input shaft; The speed measuring circuit board is arranged on one side of the TT motor body in the second direction; The photoelectric switch is arranged on the speed measuring circuit board and is electrically connected to the speed measuring circuit board, and the photoelectric switch is arranged correspondingly to the code disk to perform photoelectric sensing on the code disk; The first direction and the second direction are arranged crosswise.

2. The TT motor according to claim 1, characterized in that: The speed measuring circuit board is provided with a connecting through hole, and the hole wall of the connecting through hole is provided with a first conductive part and a second conductive part; The TT motor body has a positive electrode sheet and a negative electrode sheet, both of which are located in the connecting through hole, the positive electrode sheet is electrically connected to the first conductive part, and the negative electrode sheet is electrically connected to the second conductive part.

3. The TT motor according to claim 1, characterized in that: The speed measuring circuit board is provided with a connector on a board surface facing away from the TT motor body, and the connector is used for an external controller.

4. The TT motor according to claim 1, characterized in that: The side wall of the TT motor body in the second direction is provided with a hanging ear, the speed measuring circuit board is provided with an avoidance through hole, and the hanging ear is located in the avoidance through hole.

5. The TT motor according to claim 4, characterized in that: A mounting plane is provided on the side of the TT motor body in the second direction, a portion of the speed measuring circuit board is in contact with the mounting plane, and another portion of the speed measuring circuit board extends out relative to the mounting plane and faces the input shaft along the second direction.

6. The TT motor according to claim 5, characterized in that: The mounting planes are provided on both sides of the TT motor body in the second direction, and the speed measuring circuit board is detachably connected to any of the mounting planes.

7. The TT motor according to claim 6, characterized in that: Each of the mounting planes is provided with a first fastening portion, and the speed measuring circuit board is provided with a second fastening portion. The speed measuring circuit board is connected to any of the mounting planes via the first fastening portion and the second fastening portion.

8. The TT motor according to claim 7, characterized in that: Each of the mounting planes is provided with two first fastening parts, and the end of the speed measuring circuit board away from the photoelectric switch is provided with two second fastening parts, and the two second fastening parts are fastened and connected with the two first fastening parts of any mounting plane in a one-to-one correspondence.

9. The TT motor according to claim 1, characterized in that: The speed measuring circuit board is integrated with a filter module, and the filter module is electrically connected to the receiving end of the photoelectric switch.

10. The TT motor according to claim 9, characterized in that: The speed measuring circuit board is integrated with an indicator light, and the indicator light is connected in parallel with the photoelectric switch.

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