Stator assembly, galvanometer motor and laser radar

Abstract

The invention provides a stator assembly, a galvanometer motor and a laser radar, and relates to the technical field of motors, the stator assembly comprises a shell, an end cover, a coil holder and a winding; the end cover is fixed at the end part of the shell; a positioning groove is formed in the end cover; the wire frame comprises a first frame body, a second frame body and a wire winding piece; the first frame body is in transition fit with the inner wall of the shell; a positioning piece is arranged on the first frame body and is fixed in the positioning groove; the second frame body is fixed in the first frame body through the winding piece; the shell, the first frame body and the second frame body are coaxially arranged; the winding is wound on the winding piece. According to the stator assembly, the winding is fixed in the shell through the coil holder, compared with the prior art that the winding is fixed through glue pouring, the assembly time is shortened, the production cost is reduced, the yield of the assembled stator assembly is improved, the available space in the shell is increased, the winding has a large wire diameter or a large number of winding turns, and the production efficiency is improved. And the requirement of miniaturization of the motor is met.

Description

Technical Field

[0001] The present invention relates to the field of motor technology, and in particular to a stator assembly, a galvanometer motor and a laser radar. Background Art

[0002] At present, in the production and manufacturing of small motors such as laser radar galvanometer motors, due to the limited space in the stator housing, it is impossible to accommodate windings with larger wire diameters or more turns, resulting in the motor's output power being unable to meet the normal operation of the equipment. In order to ensure the output power of the motor, the existing stator housing usually uses a Permalloy housing with higher magnetic permeability; however, the Permalloy housing is not only expensive, but also requires a thicker Permalloy housing to ensure the magnetic permeability of the Permalloy housing in a weak magnetic field. The thicker Permalloy housing will further compress the space in the stator housing; if the diameter of the Permalloy housing is increased, it will be detrimental to the miniaturization of the motor.

[0003] The existing technology usually adopts the method of glue filling to fix the winding in the stator housing. However, the glue filling process is complicated and time-consuming, resulting in high production costs, low production efficiency, and low yield rate after stator assembly; and in order to avoid bubbles during glue filling, more space needs to be reserved in the stator housing, thereby compressing the number of turns and wire diameter of the winding, which in turn affects the output power of the motor. Summary of the invention

[0004] In order to overcome the deficiencies in the prior art, the present invention provides a stator assembly, a galvanometer motor and a laser radar.

[0005] The present invention provides the following technical solutions:

[0006] In a first aspect, the present invention provides a stator assembly, comprising:

[0007] shell;

[0008] An end cover is fixed to the end of the housing, and a positioning groove is provided on the end cover;

[0009] The wire rack comprises a first frame, a second frame and a winding member; the first frame is transitionally matched with the inner wall of the shell; a positioning member is provided on the first frame, and the positioning member is fixed in the positioning groove; the second frame is fixed in the first frame through the winding member; the shell, the first frame and the second frame are coaxially arranged;

[0010] The winding is wound on the winding member.

[0011] In a possible implementation manner, a wire outlet groove is formed on the positioning member, and the wire outlet groove is communicated with the positioning groove.

[0012] In a possible implementation manner, a cross-sectional shape of the winding member along the radial direction of the first frame is fan-shaped.

[0013] In a possible implementation manner, the winding member is provided with a chamfered portion that cooperates with the winding.

[0014] In a possible implementation manner, the wire rack includes two symmetrically arranged winding members.

[0015] In a possible implementation manner, two winding grooves are formed on the first frame; the two winding grooves are symmetrically arranged, and the opening directions of the two winding grooves are parallel to the axial direction of the first frame.

[0016] In a possible implementation manner, the stator assembly further includes a bearing; the bearing is fixed in the end cover; and the bearing is used for rotationally cooperating with the rotor assembly disposed in the second frame.

[0017] In a possible implementation manner, the shell is a carbon steel shell.

[0018] In a second aspect, the present invention further provides a galvanometer motor, comprising a rotor assembly and the above-mentioned stator assembly; the stator assembly is sleeved on the rotor assembly.

[0019] In a possible embodiment, the stator assembly includes a first end cover and a second end cover respectively fixed at both ends of the outer shell; the rotor assembly includes a positioning ring, a magnetic ring and a rotating shaft; the positioning ring is arranged in the first end cover and rotatably cooperates with the first end cover; the magnetic ring is rotatably arranged in the second frame; the rotating shaft is passed through the magnetic ring and fixedly connected to the magnetic ring; one end of the rotating shaft is fixedly connected to the positioning ring.

[0020] In a possible embodiment, the rotor assembly also includes an elastic member; one end of the magnetic ring abuts against the positioning ring; the elastic member is sleeved on an end of the rotating shaft away from the positioning ring, and one end of the elastic member abuts against the magnetic ring, and the other end abuts against the second end cover.

[0021] In a third aspect, the present invention also provides a laser radar, comprising the above-mentioned galvanometer motor.

[0022] In a fourth aspect, the present invention further provides an assembly method for assembling a galvanometer motor, comprising the following steps:

[0023] fixing the first end cover to one end of the housing;

[0024] Winding the winding on the bobbin;

[0025] The bobbin on which the winding is wound is installed into the housing, and one end of the bobbin is fixedly connected to the first end cover;

[0026] Assembling the rotor assembly and installing it into the bobbin;

[0027] The second end cover is fixed to an end of the housing away from the first end cover, and an end of the wire rack away from the first end cover is fixedly connected to the second end cover.

[0028] In a possible implementation, the bobbin includes a first frame, a second frame and a winding member, and the second frame is fixed in the first frame through the winding member; before the bobbin is installed in the housing, the winding is wound on the bobbin.

[0029] In a possible implementation, after the wire rack is installed in the outer shell, the first positioning piece on the first frame is fixed in the positioning groove on the first end cover; after the rotor assembly is installed in the second frame, the second positioning piece on the first frame is fixed in the positioning groove on the second end cover.

[0030] In a possible implementation manner, the rotor assembly includes a positioning ring, a magnetic ring, and a rotating shaft; and the rotor assembly is installed into the bobbin including the following steps:

[0031] The positioning ring is fixedly connected to one end of the rotating shaft;

[0032] The magnetic ring is sleeved on the rotating shaft and fixedly connected to the rotating shaft;

[0033] The magnetic ring is installed in the wire frame, and the positioning ring is assembled on the bearing in the first end cover.

[0034] In a possible embodiment, the rotor assembly also includes an elastic member; after the positioning ring is assembled with the bearing, the elastic member is sleeved on the rotating shaft, and one end of the elastic member is abutted against the magnetic ring, and then the second end cover is fixedly connected to the outer shell so that the end of the elastic member away from the magnetic ring is abutted against the second end cover.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The stator assembly provided by the present invention is fixed in the outer shell by winding the winding on the winding member between the first frame and the second frame, and then fixing the positioning member on the first frame in the positioning groove on the end cover. Compared with the prior art of fixing by glue pouring, the present invention fixes the winding by the wire frame, and does not require glue pouring, curing, demoulding and other processes, which greatly shortens the assembly time of the stator assembly; and there will be no problems such as glue bubbles and glue leakage, which greatly improves the yield rate of the stator assembly after assembly; at the same time, it saves glue pouring space, so that under the condition of the same outer diameter of the outer shell, the number of winding turns of the winding can be increased or the wire diameter of the winding can be increased to meet the higher torque requirements of the galvanometer motor. With the increase in the number of winding turns of the winding or the increase in the wire diameter of the winding, the magnetic field strength of the winding during operation is improved, so that the outer shell does not need to use a more expensive Permalloy shell, further reducing material costs.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 The internal schematic diagram of the existing motor is shown;

[0040] Figure 2 An exploded schematic diagram of a stator assembly according to an embodiment of the present invention is shown;

[0041] Figure 3 A schematic structural diagram of a stator assembly without a housing according to an embodiment of the present invention is shown;

[0042] Figure 4 It shows a schematic structural diagram of a wire rack at a first angle according to an embodiment of the present invention;

[0043] Figure 5 It shows a schematic structural diagram of a wire rack at a second angle according to an embodiment of the present invention;

[0044] Figure 6 An exploded schematic diagram of a rotor assembly according to an embodiment of the present invention is shown;

[0045] Figure 7 A schematic diagram of the structure of a galvanometer motor according to an embodiment of the present invention is shown;

[0046] Figure 8A schematic flow chart of an assembly method according to an embodiment of the present invention is shown.

[0047] Description of main component symbols:

[0048] 1- stator housing; 11- outlet hole; 2- glue-filled winding; 21- outlet wire; 3- bushing; 4- vibrator;

[0049] 100-stator assembly; 110-housing; 111-stepped portion; 120-bobbin frame; 121-first frame; 1211-positioning piece; 1211a-wire outlet slot; 1212-winding slot; 1213-matching slot; 122-second frame; 123-winding piece; 1231-chamfered portion; 130-winding; 140-end cover; 141-positioning slot; 142-first mounting slot; 150-bearing; 151-second mounting slot; 200-rotor assembly; 210-positioning ring; 220-magnetic ring; 230-rotating shaft; 240-elastic piece. DETAILED DESCRIPTION

[0050] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0051] In the description of the present invention, it is necessary to understand that the terms "length", "width", "thickness", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present invention, unless otherwise clearly specified and limited, a first feature being “on” or “under” a second feature may mean that the first and second features are in direct contact with each other, or the first and second features are in indirect contact with each other through an intermediate medium.

[0055] For ease of understanding, the disadvantages of the existing stator assembly and the motor using the stator assembly are described in detail.

[0056] In the existing production and assembly process of stator components, the winding is usually prepared by self-adhesive enameled wire through heating, curing, shaping and other processes, which makes the winding preparation process more complicated and the material cost higher; and the winding is easy to move when placed in the stator housing, which causes the subsequent glue filling to be slow.

[0057] Before glue potting, the stator housing needs to be preheated and evacuated to prevent bubbles from forming inside the glue after potting and to reduce the adhesion between the winding and the inner wall of the stator housing.

[0058] During glue potting, due to the small space in the stator housing and the large gaps in the windings, it is easy to generate bubbles if the glue potting speed is too fast; in the subsequent heating and curing process, the bubbles in the glue rise, which will cause problems such as uneven glue end surface and glue end surface height exceeding the required height, thus affecting the yield rate of the stator assembly. Too slow a glue potting speed will seriously affect the production efficiency of the stator assembly.

[0059] In order to ensure that the glue is poured smoothly without bubbles, more space needs to be reserved in the stator housing, which limits the number of turns and wire diameter of the winding, making the magnetic field strength of the winding lower when it is working, thereby reducing the accuracy and power of the motor when it is working. If the size of the stator housing is increased, it will be detrimental to the miniaturization of the motor.

[0060] In the production process of high-precision micro motors such as existing laser radar galvanometer motors, the windings are fixed by glue filling. In order to balance the contradiction between high precision and miniaturization, the existing stator shell usually uses a Permalloy shell to increase the magnetic permeability. However, the Permalloy shell is not only expensive, but also can only be thicker to ensure the magnetic permeability of the Permalloy shell in a weak magnetic field; under the same outer diameter, the thicker the Permalloy shell, the smaller the available space inside the shell, further limiting the number of turns and wire diameter of the winding; if the diameter of the Permalloy shell is increased, it will be unfavorable for the miniaturization of the galvanometer motor.

[0061] See also Figure 1 The existing motor includes a stator housing 1, a glue-filled winding 2, a vibrator 4 and two sleeves 3; the glue-filled winding 2 is fixed in the stator housing 1 by glue filling; the two sleeves 3 are rotatably arranged at both ends of the stator housing 1, and the two ends of the vibrator 4 are fixedly connected to the corresponding sleeves 3 respectively.

[0062] In order to avoid glue leakage after the stator housing 1 is glued, the existing stator housing 1 is usually processed in an integrated molding manner; and a wire outlet hole 11 is opened in the radial direction of the stator housing 1, and the wire 21 of the glue-filled winding 2 is led outward through the wire outlet hole 11. In order to prevent the sharpening edge of the wire outlet hole 11 from scratching the paint of the wire 21, a chamfer is usually set at the end of the wire outlet hole 11; however, due to the limited internal space of the stator housing 1 after molding, it is not easy to place the chamfering processing equipment, and the aperture of the wire outlet hole 11 is small (the aperture of the wire outlet hole 11 is usually within 6mm), which leads to the junction between the inner wall of the wire outlet hole 11 and the inner wall of the stator housing 1 ( Figure 1 It is not easy to set a chamfer (at the dotted circle), so that the outlet wire 21 is easily scratched when passing through the outlet hole 11.

[0063] When the existing motor is working, the two sleeves 3 usually drive the vibrator 4 to rotate to ensure the coaxiality of the vibrator 4 and the stator housing 1, so that electromagnetic energy conversion is generated when the vibrator 4 rotates. However, since the vibrator 4 is usually a magnetic vibrator, it is relatively brittle; when the vibrator 4 is fixedly connected to the sleeve 3, and when the vibrator 4 is subjected to a strong load impact, the connection between the vibrator 4 and the sleeve 3 is prone to breakage.

[0064] Embodiment 1

[0065] See also Figures 2 to 5 An embodiment of the present invention provides a stator assembly 100. The stator assembly 100 is used in a galvanometer motor to solve the problem of low efficiency and high cost of the winding 130 fixing method in the prior art.

[0066] The stator assembly 100 includes a shell 110, an end cover 140, a bobbin 120 and a winding 130; the end cover 140 is fixed to the end of the shell 110, and a positioning groove 141 is opened on the end cover 140; the bobbin 120 includes a first frame 121, a second frame 122 and a winding member 123; the first frame 121 is transitionally matched with the inner wall of the shell 110; a positioning member 1211 is provided on the first frame 121, and the positioning member 1211 is arranged in the positioning groove 141; the second frame 122 is fixed in the first frame 121 through the winding member 123; the shell 110, the first frame 121 and the second frame 122 are coaxially arranged; the winding 130 is wound on the winding member 123.

[0067] For details, please refer to Figure 2 and Figure 3 The housing 110 is cylindrical; the end cover 140 includes a first end cover and a second end cover, and the two end covers 140 are respectively fixed to the two ends of the housing 110.

[0068] In some embodiments, the end cover 140 is fixed to the end of the housing 110 by riveting; but not limited thereto, in other embodiments, the end cover 140 may also be fixedly connected to the housing 110 by a snap-fit ​​structure or a flange connection structure.

[0069] In some embodiments, inner walls at both ends of the housing 110 are provided with stepped portions 111 corresponding to the end caps 140. The stepped portions 111 are used to limit the movement of the end caps 140 in the housing 110 along the axial direction of the housing 110.

[0070] In some embodiments, see Figure 4 and Figure 5 The first frame 121 and the second frame 122 are substantially cylindrical; the first frame 121 and the second frame 122 are coaxially arranged, and the first frame 121 and the second frame 122 are fixedly connected by the winding member 123. An accommodating space is provided in the second frame 122, and the accommodating space is used to accommodate the rotor assembly 200, and the rotor assembly 200 can rotate in the accommodating space.

[0071] In some embodiments, a cross-sectional shape of the winding member 123 along the radial direction of the first frame 121 is fan-shaped.

[0072] Specifically, the winding member 123 is a hexahedral structure, and the winding member 123 includes a first arc surface, a second arc surface, a first fan surface, a second fan surface, a first connecting surface and a second connecting surface; the first arc surface and the second arc surface are arranged opposite to each other, and the first arc surface is fixedly connected to the inner wall of the first frame 121, and the second arc surface is fixedly connected to the outer wall of the second frame 122; the first fan surface and the second fan surface are arranged opposite to and in parallel, and the planes where the first fan surface and the second fan surface are located are both perpendicular to the axis of the first frame 121; the first connecting surface and the second connecting surface are arranged opposite to and in parallel, and the first connecting surface and the second connecting surface are both parallel to the axis of the first frame 121.

[0073] See also Figure 2 , Figure 4 and Figure 5 The winding 130 is wound on the first fan surface, the first connecting surface, the second fan surface and the second connecting surface; the winding 130 is arranged on the first fan surface and the second fan surface along the arc direction of the first fan surface.

[0074] Furthermore, chamfered portions 1231 are provided at the connection between the first fan surface and the first connecting surface, the connection between the first fan surface and the second connecting surface, the connection between the second fan surface and the first connecting surface, and the connection between the second fan surface and the second connecting surface; the chamfered portions 1231 are used to prevent the paint from being scratched when the winding 130 is wound.

[0075] Furthermore, the first frame 121 , the second frame 122 , and the winding member 123 are fixedly connected by integral molding.

[0076] The operator can adjust the curvature of the first sector as needed, thereby changing the magnetic field strength of the winding 130 .

[0077] The operator can adjust the vertical distance between the first frame 121 and the second frame 122 as needed to change the number of turns of the winding 130 wound around the winding member 123 or the wire diameter of the winding 130 , thereby changing the magnetic field strength of the winding 130 .

[0078] It is worth noting that when the cross-sectional shape of the winding member 123 along the radial direction of the first frame 121 is in the shape of a sector ring, the arc of the sector ring is less than 180 degrees.

[0079] Preferably, the arc of the fan ring is between 80 degrees and 120 degrees.

[0080] In another embodiment, the winding member 123 includes four connecting posts, which are arranged in an array between the first frame 121 and the second frame 122. One end of the connecting post is fixedly connected to the inner wall of the first frame 121, and the other end is fixedly connected to the outer wall of the second frame 122.

[0081] Through the turning of different connecting posts, the winding 130 can be wound on four connecting posts at the same time; and because the outer surface of the connecting post is a smooth curved surface, it is not easy to scratch the paint of the winding 130.

[0082] In another embodiment, the winding member 123 includes two connecting plates; the two connecting plates are arranged around the circumferential direction of the second frame 122; one end of the connecting plate is fixedly connected to the inner wall of the first frame 121, and the other end is fixedly connected to the outer wall of the second frame 122. The angle between the two connecting plates is less than 180 degrees. Through the turning of different connecting plates, the winding 130 can be wound on the two connecting plates at the same time.

[0083] Both ends of the connecting plate along the axial direction of the first frame 121 are provided with chamfered portions 1231 to avoid scratching the paint coating of the winding 130 .

[0084] In some embodiments, the bobbin 120 includes two symmetrically arranged winding members 123; after an enameled wire is wound on one winding member 123, it is wound on another winding member 123 to form the winding 130. The N pole and S pole generated by the winding 130 after power is supplied interact with the rotor assembly 200 in the second frame 122.

[0085] The winding 130 is wound on the winding member 123 under a certain tension, and then the wire frame 120 is fixed in the housing 110, so that the winding 130 is fixed in the housing 110 and is not easy to loosen; when the winding 130 is wound, no heating, fixing, shaping and other processes are required, which shortens the processing time, and the winding 130 can be wound using ordinary enameled wire, which reduces material costs compared to the prior art using self-adhesive enameled wire.

[0086] The winding 130 is fixed in the housing 110 through the wire frame 120, so there is no need for glue injection, curing, demoulding and other processes, which greatly shortens the assembly time of the stator assembly 100; and there is no need to worry about the existence of glue injection bubbles, glue leakage and other problems, which greatly improves the yield rate of the stator assembly 100 after assembly; at the same time, the use of the wire frame 120 to fix the winding 130 can save glue injection space, so that the number of windings of the winding 130 can be increased or the wire diameter of the winding 130 can be increased under the condition of the same outer diameter of the housing 110, so as to meet the higher torque requirements of the galvanometer motor. With the increase in the number of windings of the winding 130 or the increase in the wire diameter of the winding 130, the magnetic field strength of the winding 130 is improved, so that the housing 110 does not need to use the more expensive Permalloy housing 110, and the thickness of the housing 110 can be greatly reduced, which can not only reduce the material cost, but also ensure that there is more ample space in the housing 110 to accommodate the rotor assembly. Since there is no need to use glue to fix it, the gap on the winding 130 can dissipate the heat generated when the galvanometer motor is working.

[0087] In some embodiments, two winding grooves 1212 are formed on the first frame 121 ; the winding 130 enters the first frame 121 through the winding grooves 1212 so as to be wound on the winding member 123 .

[0088] Furthermore, the two winding grooves 1212 are symmetrically arranged, and the opening directions of the two winding grooves 1212 are parallel to the axial direction of the first frame 121 , so that the same enameled wire can be wound on different winding members 123 respectively.

[0089] Furthermore, the winding groove 1212 and the winding member 123 are staggered.

[0090] In some embodiments, the wire rack 120 is further provided with two symmetrically arranged mating grooves 1213 ; the wire rack 120 is fixed to an external winding device through the mating grooves 1213 ; the winding device can drive the wire rack 120 to rotate to facilitate the winding of the winding 130 .

[0091] Preferably, the matching groove passes through the first frame 121 , the winding member 123 and the second frame 122 at the same time.

[0092] See also Figures 2 to 4 A positioning member 1211 is provided on the first frame 121 , and the positioning member 1211 can be fixed in the positioning groove 141 to prevent the wire rack 120 from rotating in the housing 110 .

[0093] Preferably, the positioning groove 141 is opened at the outer edge of the end cover 140; the positioning member 1211 is arranged at the end of the first frame 121, and the positioning member 1211 extends outward along the axial direction of the first frame 121; the width of the positioning member 1211 matches the width of the positioning groove 141.

[0094] Furthermore, a plurality of positioning members 1211 are disposed at both ends of the first wire frame 120 , and a corresponding number of positioning slots 141 are formed on the end cover 140 to improve the ability to limit the rotation of the housing 110 .

[0095] Furthermore, the plurality of positioning members 1211 at the same end are evenly arranged around the circumference of the first frame body 121 .

[0096] In some embodiments, a wire outlet groove 1211a is formed on the positioning member 1211, and the wire outlet groove 1211a is connected to the positioning groove 141; the wires of the winding 130 after being wound are led outward through the positioning groove 141 and the wire outlet groove 1211a in sequence.

[0097] By opening the wire outlet groove 1211a on the positioning member 1211, when the positioning member 1211 is inserted into the positioning groove 141, the wire outlet groove 1211a allows the inner wall of the positioning groove 141 to squeeze both ends of the positioning member 1211 at the same time to change the width of the positioning member 1211, thereby making the positioning member 1211 fixedly connected to the inner wall of the positioning groove 141 by interference fit.

[0098] Preferably, the opening direction of the wire outlet groove 1211 a is parallel to the axial direction of the first frame 121 to prevent the wires of the winding 130 from scraping against the inner wall of the wire outlet groove 1211 a.

[0099] See also Figure 2 and Figure 3 Since the present application fixes the winding 130 in the housing 110 through the wire rack 120, the glue pouring space is saved; under the condition that the outer diameter of the housing 110 is the same, the number of windings and the wire diameter of the winding 130 can be increased, thereby increasing the magnetic field strength of the winding 130 to meet the torque requirement of the galvanometer motor; the housing 110 does not need to use the more expensive Permalloy housing 110, but only needs to use a carbon steel housing.

[0100] The carbon steel shell can be a relatively low-priced shell such as a galvanized steel plate stretched iron shell.

[0101] In some embodiments, the wire frame 120 is made of elastic plastic by integral injection molding.

[0102] In some embodiments, the bobbin 120 is assembled from the first frame 121, the second frame 122, and the winding member 123, so that the first frame 121, the second frame 122, and the winding member 123 can be processed separately. By assembling the bobbin 120, each component can be finely processed before assembly to eliminate the phenomenon of cutting and prevent the paint of the winding 130 from being damaged when the output wire of the winding 130 is led outward.

[0103] The first frame 121 is transitionally matched with the inner wall of the housing 110 , and the positioning member 1211 is fixedly matched with the positioning groove 141 , so that the wire rack 120 is fixed in the housing 110 .

[0104] In some embodiments, the stator assembly 100 also includes a bearing 150; the bearing 150 is fixed in the end cover 140; the bearing 150 is used to rotate with the rotor assembly 200 in the second frame 122, so that when power is turned on, the magnetic field generated by the winding 130 interacts with the stator assembly 100 to generate electromagnetic force, thereby driving the rotor assembly 200 to rotate in the second frame 122.

[0105] Specifically, a first mounting groove 142 is formed on the end cover 140 , and the bearing 150 is fixed in the first mounting groove 142 by gluing.

[0106] The stator assembly 100 provided in this embodiment is configured to fix the winding 130 in the housing 110 by winding the winding 130 on the winding member 123 between the first frame 121 and the second frame 122, and then fixing the positioning member 1211 on the first frame 121 in the positioning groove 141 on the end cover 140. Compared with the prior art of fixing by glue pouring, the present application fixes the winding 130 by the wire frame 120, which does not require glue pouring, curing, demoulding and other processes, greatly shortens the assembly time of the stator assembly 100; and there is no need to worry about the occurrence of glue bubbles, glue leakage and other problems, which greatly improves the yield rate of the stator assembly 100 after assembly; at the same time, the glue pouring space is saved, so that under the condition that the outer diameter of the housing 110 is the same, the number of windings of the winding 130 can be increased or the wire diameter of the winding 130 can be increased to meet the higher torque requirements of the galvanometer motor. As the number of turns or the wire diameter of the winding 130 increases, the magnetic field strength of the winding 130 increases, thereby eliminating the need for the housing 110 to use a relatively expensive Permalloy housing 110 , further reducing material costs.

[0107] Embodiment 2

[0108] See also Figures 2 to 7, this embodiment provides a galvanometer motor, including a rotor assembly 200 and the above-mentioned stator assembly 100.

[0109] The stator assembly 100 includes a positioning ring 210, a magnetic ring 220 and a rotating shaft 230; the positioning ring 210 is rotatably matched with the bearing 150; the magnetic ring 220 is rotatably disposed in the second frame 122 and abuts against the positioning ring 210; the rotating shaft 230 is fixed in the magnetic ring 220, and one end of the rotating shaft 230 passes through the magnetic ring 220 and is fixedly connected to the positioning ring 210.

[0110] Preferably, a second mounting groove 151 is formed on the bearing 150 ; the positioning ring 210 is installed in the second mounting groove 151 and rotatably cooperates with the bearing 150 to ensure the coaxiality of the rotor assembly 200 during rotation.

[0111] Preferably, the rotating shaft 230 and the magnetic ring 220 are fixedly connected by gluing to ensure that the magnetic ring 220 is fixed on the rotating shaft 230 without being subjected to extrusion force, thereby avoiding damage to the magnetic ring 220 during assembly.

[0112] In some embodiments, the rotor assembly 200 also includes an elastic member 240; the elastic member 240 is sleeved on one end of the rotating shaft 230 away from the positioning ring 210, and one end of the elastic member 240 is abutted against the magnetic ring 220, and the other end is abutted against the end cover 140. Under the action of the elastic force of the elastic member 240, the end of the magnetic ring 220 away from the elastic member 240 is always abutted against the positioning ring 210 to eliminate the virtual position of the magnetic ring 220 in the second frame 122.

[0113] Preferably, the elastic member 240 is a spring.

[0114] When powered on, the magnetic field generated by the winding 130 can drive the magnetic ring 220 and the rotating shaft 230 to rotate in the second frame 122 .

[0115] The magnetic ring 220 includes an N pole and an S pole; the N pole and the S pole are symmetrically arranged on a radial plane of the magnetic ring 220 .

[0116] In the prior art, since the windings in the stator assembly are fixed in the stator housing by glue injection, the available space in the stator housing is small, and the vibrator can only be installed through the sleeves arranged at both ends of the stator housing to ensure the coaxiality of the vibrator as a whole. However, since the vibrator is made of magnets and is relatively brittle, the ends of the vibrator are easily broken by collision with the sleeves during the installation process and when subjected to strong load impact.

[0117] In the galvanometer motor of this embodiment, the winding 130 is fixed in the housing 110 through the wire frame 120, which saves the glue injection space, so that there is enough space for the magnetic ring 220 to be sleeved on the rotating shaft 230; the positioning ring 210 and the bearing 150 are rotatably matched, the positioning ring 210 is fixedly connected to the rotating shaft 230, and the rotating shaft 230 is fixedly connected to the magnetic ring 220; thereby ensuring the coaxiality of the rotor assembly 200 during rotation. Since the magnetic ring 220 is annular, the cogging effect between the winding 130 and the magnetic ring 220 can be effectively reduced; and the end of the rotating shaft 230 is not easy to break.

[0118] Embodiment 3

[0119] This embodiment provides a laser radar, including the above-mentioned galvanometer motor.

[0120] The laser radar provided in this embodiment has the galvanometer motor provided in the above embodiment, and therefore has all the beneficial effects of the galvanometer motor provided in the above embodiment, which will not be described one by one here.

[0121] Embodiment 4

[0122] See also Figures 2 to 8 This embodiment provides an assembly method for assembling the galvanometer motor, comprising the following steps:

[0123] S1: Fix the first end cover to one end of the housing 110 .

[0124] Specifically, the first end cover is fixed to the end of the housing 110 by riveting.

[0125] Before step S1, the step further includes fixing the bearing 150 in the first end cover.

[0126] Specifically, after glue is applied to the outer ring of the bearing 150 , the bearing 150 is placed into the first mounting groove 142 on the first end cover, so that the bearing 150 is fixed in the first mounting groove 142 .

[0127] S2: Winding the winding 130 on the bobbin 120 .

[0128] Specifically, an enameled wire enters the first frame 121 through the winding groove 1212 and is wound on the winding member 123 to form the winding 130. The winding wire of the winding 130 is led outward through the positioning groove 141 and the outlet groove 1211a in sequence.

[0129] S3: The bobbin 120 wound with the winding 130 is installed into the housing 110, and one end of the bobbin 120 is fixedly connected to the first end cover.

[0130] Specifically, the first frame 121 is connected to the inner wall of the housing 110 by transition fit. A first positioning member and a second positioning member are respectively provided at both ends of the first frame 121. The first positioning member can be inserted into and fixed in the positioning groove 141 on the first end cover, so that the wire frame 120 is fixedly connected to the first end cover; the second positioning member can be inserted into and fixed in the positioning groove 141 on the second end cover, so that the wire frame 120 is fixedly connected to the second end cover.

[0131] S4: Assemble the rotor assembly 200 and install it into the bobbin 120 .

[0132] Specifically, the rotor assembly 200 is installed in the wire rack 120, including the following steps:

[0133] The first step is to fix the positioning ring 210 to one end of the rotating shaft 230; the second step is to sleeve the magnetic ring 220 on the rotating shaft 230 and fix it to the rotating shaft 230; the third step is to install the magnetic ring 220 into the wire frame 120 and assemble the positioning ring 210 on the bearing 150 in the first end cover.

[0134] After the magnetic ring 220 is sleeved on the rotating shaft 230, one end of the magnetic ring 220 is held against the positioning ring 210, and the magnetic ring 220 is fixedly connected to the rotating shaft 230 by gluing; the end of the rotating shaft 230 is fixedly connected to the positioning ring 210 by interference fit.

[0135] After the positioning ring 210 and the bearing 150 are assembled, the method further includes the following steps: sleeve the elastic member 240 on the rotating shaft 230 , and make one end of the elastic member 240 abut against the magnetic ring 220 .

[0136] S5: fix the second end cover to the end of the housing 110 away from the first end cover, and fix the end of the wire rack 120 away from the first end cover to the second end cover.

[0137] Specifically, the first positioning member on the first frame 121 can be inserted into and fixed in the positioning groove 141 on the second end cover, so that the wire frame 120 is fixedly connected to the second end cover. The second end cover is fixed to the housing 110 and can compress the elastic member 240 to eliminate the virtual position of the magnetic ring 220 in the second frame 122.

[0138] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0139] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A stator assembly, characterized in that: include: shell; An end cover is fixed to the end of the housing, and a positioning groove is provided on the end cover; The wire rack comprises a first frame, a second frame and a winding member; the first frame is transitionally matched with the inner wall of the shell; a positioning member is provided on the first frame, and the positioning member is fixed in the positioning groove; the second frame is fixed in the first frame through the winding member; the shell, the first frame and the second frame are coaxially arranged; The winding is wound on the winding member.

2. The stator assembly according to claim 1, characterized in that The positioning member is provided with a wire outlet groove, and the wire outlet groove is communicated with the positioning groove.

3. The stator assembly according to claim 2, characterized in that: The cross-section of the winding member along the radial direction of the first frame is in a fan-shaped shape.

4. The stator assembly according to claim 3, characterized in that: The winding piece is provided with a chamfered portion matched with the winding.

5. The stator assembly according to claim 4, characterized in that The wire rack includes two symmetrically arranged winding members.

6. The stator assembly according to any one of claims 1 to 5, characterized in that: The first frame is provided with two winding grooves; the two winding grooves are symmetrically arranged, and the opening directions of the two winding grooves are parallel to the axial direction of the first frame.

7. The stator assembly according to any one of claims 1 to 5, characterized in that: The stator assembly also includes a bearing; the bearing is fixed in the end cover; the bearing is used for rotationally cooperating with the rotor assembly arranged in the second frame.

8. The stator assembly according to any one of claims 1 to 5, characterized in that: The shell is a carbon steel shell.

9. A galvanometer motor, characterized in that: It comprises a rotor assembly and a stator assembly as described in any one of claims 1 to 8; the stator assembly is sleeved on the rotor assembly.

10. A laser radar, characterized in that: Including the galvanometer motor described in claim 9.

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