CN216490176U - Linear motor module and electric equipment - Google Patents
Linear motor module and electric equipment Download PDFInfo
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- CN216490176U CN216490176U CN202122924490.2U CN202122924490U CN216490176U CN 216490176 U CN216490176 U CN 216490176U CN 202122924490 U CN202122924490 U CN 202122924490U CN 216490176 U CN216490176 U CN 216490176U
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Abstract
The utility model discloses a linear motor module and electric equipment. The linear motor module comprises a stator assembly, a rotor assembly and a position monitoring system. Wherein, stator module includes base and stator magnetic plate, and the base includes bottom surface and two sides, and the mounting groove is injectd to bottom surface and two sides, and the several stator magnetic plate is laid in the bottom surface of mounting groove along the length direction end to end of mounting groove. The rotor assembly comprises a sliding seat and a coil, the sliding seat is arranged in the mounting groove and can slide along the length direction of the mounting groove. The position detection system can read the polarity of the stator magnetic plate to obtain the position and the speed of the rotor, so that the assembly difficulty can be reduced, the space occupation can be reduced and the manufacturing cost can be reduced relative to a linear motor module with a grating ruler. The electric equipment adopts the linear motor module. Wherein, linear electric motor module occupation space is little, and the assembly that the consumer can be compacter is to being in the same place. The linear motor module has low manufacturing cost, and the manufacturing cost of the electric equipment can be reduced.
Description
Technical Field
The utility model relates to the technical field of linear motors, in particular to a linear motor module and electric equipment
Background
In the related art, the linear motor module includes a mover assembly and a stator assembly, wherein a position and a moving speed of the mover assembly relative to the stator assembly are generally determined by a grid ruler, and the grid ruler is expensive and is not suitable for large-scale application of the linear motor module.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a linear motor module which can determine the position and the speed of a rotor assembly under the condition of not using a grating ruler.
The utility model also provides electric equipment with the linear motor module.
According to a first aspect embodiment of the present invention, a linear motor module includes:
the stator assembly comprises a base and stator magnetic plates, wherein the base comprises a bottom surface and two side surfaces, the bottom surface and the two side surfaces define a mounting groove, and the stator magnetic plates are arranged on the bottom surface of the mounting groove in an end-to-end connection mode along the length direction of the mounting groove;
the rotor assembly comprises a sliding seat and a coil, the sliding seat is arranged in the mounting groove and can slide along the length direction of the mounting groove, and the coil is fixedly connected with the sliding seat;
and the position detection system is fixedly connected to the rotor assembly and can read the polarity of the stator magnetic plate to acquire the position and the speed of the rotor.
The linear motor module provided by the embodiment of the utility model at least has the following beneficial effects: when the linear motor is electrified, the coil moves along the length direction of the mounting groove under the action of the stator magnetic plate. The linear motor module comprises a position detection system, the position detection system can read the polarity of the stator magnetic plate to obtain the position and the speed of the rotor, and the linear motor module can reduce assembly difficulty, reduce occupied space and reduce manufacturing cost relative to a linear motor module with a grid ruler.
According to some embodiments of the present invention, a guide groove is formed on a side surface of the mounting groove along a length direction of the mounting groove, a receiving groove is formed on a side wall of the sliding seat, and the linear motor module further includes a ball at least partially disposed in the receiving groove and at least partially disposed in the guide groove.
According to some embodiments of the present invention, the position detection system comprises a detection module, a first signal processing module and a second signal processing module, the detection module, the first signal processing module and the second signal processing module are communicatively connected, wherein:
the detection module is configured to sense N, S levels of the stator magnetic plates when the rotor assembly moves repeatedly and transmit sine and cosine signals to the first signal processing module;
the first signal processing module is configured to receive the sine and cosine signal and convert the sine and cosine signal into an orthogonal square wave signal;
the second signal processing module is configured to receive the orthogonal square wave signal and process the orthogonal square wave signal to obtain a current position and a current speed of the mover assembly.
According to some embodiments of the utility model, the coil is exposed to the mounting groove.
According to some embodiments of the present invention, the side surface includes a first surface, a second surface, and a first slope connecting the first surface and the second surface, a distance between the first surfaces is greater than a width of the sliding seat, and a distance between the second surfaces is greater than a width of the mover.
According to some embodiments of the utility model, the first inclined surface is provided with a plurality of step surfaces, and an intersection line formed by intersecting two adjacent step surfaces is parallel to the length direction of the base.
According to some embodiments of the utility model, the stator assembly further comprises a guide member fixedly connected to a side surface of the mounting groove, the guide groove being opened in the guide member; wherein the strength of the guide is greater than the strength of the base.
According to some embodiments of the present invention, a connecting groove is formed in a side surface of the mounting groove along a length direction of the mounting groove, and the guide member is fixedly inserted into the connecting groove.
According to some embodiments of the present invention, the mobile phone further comprises a sensor and a sensing piece, wherein the sensor is connected to the outer wall of the base, the sensing piece is fixedly connected to the sliding seat, the sensing piece can move and pass through the sensor, and the sensor can sense the position of the sensing piece.
According to a second aspect of the present invention, the electric device includes the linear motor module provided in the first aspect of the present invention.
The electric equipment provided by the embodiment of the utility model has at least the following beneficial effects: the electric equipment adopts the linear motor, the linear motor occupies a small space and is low in manufacturing cost, the linear motor occupies a small space, the electric equipment can be assembled together more compactly, the manufacturing cost of the linear motor is low, and the manufacturing cost of the electric equipment is also reduced.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described with reference to the following figures and examples, in which:
FIG. 1 is a schematic view of a linear motor module;
FIG. 2 is a schematic cross-sectional view of the linear motor module of FIG. 1;
fig. 3 is a schematic view of the mover assembly of fig. 1.
Reference numerals: stator assembly 100, side surface 110, first surface 111, first inclined surface 112, step surface 1121, second surface 113, stator magnetic plate 120, sensor 130, guide groove 140, mounting groove 150, bottom surface 160, base 170;
a mover assembly 200, a receiving groove 210, a coil 220, an end cap 230, and a sliding seat 240;
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1 to 3, the present invention provides a linear motor module including a stator assembly 100, a mover assembly 200, and a position detection system 500. The stator assembly 100 includes a base 170 and stator magnetic plates 120 (the stator magnetic plates are composed of magnets whose yoke plates (steel plates) and NS poles are arranged in a cross manner), the base 170 includes a bottom surface 160 and two side surfaces 110, the bottom surface 160 and the two side surfaces 110 define a mounting groove 150, and the plurality of stator magnetic plates 120 are arranged on the bottom surface 160 of the mounting groove 150 in an end-to-end manner along the length direction of the mounting groove 150;
referring to fig. 1 and 3, the mover assembly 200 includes a sliding base 240 and a coil 220, the sliding base 240 is disposed in the mounting groove 150 and can slide along a length direction of the mounting groove 150, and the coil 220 is fixedly connected to the sliding base 240; when the linear motor is powered on, the coil 220 moves the mover assembly 200 along the length direction of the mounting groove 150 under the action of the stator magnetic plate 120. The sum of the lengths of all the stator magnetic plates 120 is greater than the movable range of the mover assembly 200 in the stator assembly 100, so that the movement range of the mover assembly 200 is not affected by the lengths of the stator magnetic plates 120.
Referring to fig. 2 and 3, the position detection system 500 is fixedly coupled to the mover assembly 200, and the position detection system 500 can read the polarity of the stator magnetic plate 120 to obtain the position and speed of the mover. For the linear motor module that has the bars chi can reduce the assembly degree of difficulty, reduce space and occupy and reduce the cost of manufacture.
The position detection module is configured to sense an NS-level signal of the stator magnetic plate 120 when the mover assembly moves repeatedly, and determine a current position and a current speed of the mover assembly according to the acquired NS-level signal. Specifically, the detection system includes detection module, first signal processing module and second signal processing module, and the detection module sets up on runner assembly 200, and detection module can select conventional encoder for use, and the encoder has the magnetic resistance chip, and the magnetic resistance chip is used for the NS level of response stator magnetic sheet 120 when runner assembly 200 moves repeatedly to just cosine signal transmission to first signal processing module. The first signal processing module is provided with an AD chip circuit, the AD chip circuit converts sine and cosine signals into orthogonal square wave signals and transmits the signals to the second signal processing module, and the second signal processing module (which can adopt a servo driver) performs counting processing according to the orthogonal square wave signals, so that the current position and the current speed of the rotor assembly 200 are obtained. It can be seen from the above that, compare in corresponding technology linear electric motor embeds a bar chi in order to record the scheme of mover components's position and speed, linear electric motor that this application scheme adopted no bar chi, and linear electric motor's cost of manufacture is lower to and linear electric motor's size can be done littleer. Referring to fig. 2 and 3, in some embodiments, a guide groove 140 is formed on a side surface 110 of the mounting groove 150 along a length direction of the mounting groove 150, a receiving groove 210 is formed on a side wall of the sliding seat 240, and the linear motor module further includes a ball 400. The balls 400 are simultaneously disposed in the receiving groove 210 and the guide groove 140, so that the sliding seat 240 is slidably coupled to the base 170. In the moving process of the mover assembly 200, the stator assembly 100 does not drive the mover assembly 200 through an actual mechanical structure, but drives the mover assembly 200 to move through the action of electromagnetic force, at this time, the resistance received by the mover assembly 200 in the moving process is small, the sliding seat 240 of the mover assembly 200 is slidably connected with the base 170 through the ball 400, the friction between the sliding seat 240 and the ball 400 is rolling friction, the resistance received by the mover assembly 200 can be further reduced, the mover assembly 200 can be driven by the small electromagnetic force in the moving process, and the consumption of electric energy is reduced. The end caps 230 are disposed at two ends of the sliding seat 240, and the end caps 230 block the front and rear ports of the accommodating groove 210, so that the balls 400 are always kept in the accommodating groove 210 during the sliding process of the sliding seat 240; or, the accommodating groove 210 does not penetrate through the front and rear ends of the sliding seat 240, so that the balls 400 are always kept in the accommodating groove 210 during the sliding process of the sliding seat 240.
In some embodiments, the coil 220 in the mover is exposed in the mounting groove 150, so that good heat dissipation can be maintained when the linear motor module operates for a long time, and the influence of an excessively high temperature on the service life of the module is avoided.
Referring to fig. 2, in some embodiments, the side surface 110 of the mounting groove 150 includes a first surface 111, a second surface 113, and a first inclined surface 112, the first inclined surface 112 connects the first surface 111 and the second surface 113, a distance between the two first surfaces 111 is greater than a width of the sliding seat 240, and a distance between the two second surfaces 113 is greater than a width of the mover. The thickness of base 170 side plate from top to bottom increases gradually, compares in the similar to U type design of current module base 170, and the intensity of base 170 of this application is higher, makes movable assembly 200 can not lead to stator module 100 to take place to warp after using for a long time, and the vibration that produces in movable assembly 200's the motion process is littleer, and the operation stationarity is better.
Referring to fig. 2, in some embodiments, the first inclined surface 112 is provided with a plurality of step surfaces 1121, and an intersection line formed by two adjacent step surfaces 1121 is parallel to the length direction of the base 170. Step surface 1121's setting facilitates the processing of section bar, and can reduce the difficulty of manufacturing.
Referring to fig. 2, in some embodiments, the stator assembly 100 further includes two guide members 300, one guide member 300 being horizontally fixed to the left side surface 110 of the mounting groove 150, the other guide member 300 being horizontally fixed to the right side surface 110 of the mounting groove 150, and the sliding seat 240 being located between the two guide members 300. The guide groove 140 is opened in the guide 300 along the length direction of the mounting groove 150, and the ball 400 is placed in the guide 300 at a position far from the sliding seat 240. Wherein, because the intensity of guide 300 is greater than the intensity of base 170, for example, base 170 adopts aluminium system material to make, and guide 300 adopts steel material to make, therefore can see, through the setting of guide 300, guide 300 has increased the intensity in the corresponding region of base 170 to avoid ball 400 to cause the corresponding region of base 170 to take place to warp, prolonged the life of linear electric motor module, do not need base 170 all to make by high strength material in addition, reduced material cost and processing degree of difficulty.
Referring to fig. 2, further, along the length direction of the mounting groove 150, the side 110 of the mounting groove 150 is provided with a connecting groove, and the guide 300 is fixed to the connecting groove in an embedded manner, so that the guide 300 is hidden in the base 170, that is, the contact area between the base 170 and the guide 300 is ensured, the guide 300 is prevented from excessively extruding the base 170, the base 170 is prevented from deforming, the occupied space of the guide 300 is also prevented, and the size of the linear motor module is increased.
Referring to fig. 1 and 3, in some embodiments, the linear motor module further includes a sensor 130 and a sensing piece 600, the sensor 130 is connected to an outer wall of the base 170, the sensing piece 600 is fixedly connected to the sliding seat 240, the sensing piece 600 can move and pass through the sensor 130, and the sensor 130 can sense the position of the sensing piece 600. The sensors 130 are disposed at three positions, i.e., a zero position, a maximum stroke position, and an extreme position of the mover assembly 200. As mover assembly 200 passes or is in these positions, sensor 130 can sense and transmit signals to the linear motor module for further command. The sensing piece 600 is generally made of a metal material, and is not easily deformed while maintaining a certain strength, and is easily sensed by the sensor 130. The sensor 130 generally uses a photosensor.
In a second embodiment of the present invention, an electric device (not shown in the drawings) is disclosed, which includes the above-mentioned linear motor module. Specifically, the electric equipment adopts the linear motor module, and the linear motor module occupies a small space and is low in manufacturing cost. Wherein, linear electric motor module occupation space is little, and consumer can assemble to together compacter. The linear motor module has low manufacturing cost, and the manufacturing cost of the electric equipment can be reduced. The electricity utilization device can be a mechanized device commonly used in industrial production, such as a handling device or a detection device.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. A linear motor module, comprising:
the stator assembly comprises a base and stator magnetic plates, wherein the base comprises a bottom surface and two side surfaces, the bottom surface and the two side surfaces define a mounting groove, and the stator magnetic plates are arranged on the bottom surface of the mounting groove in an end-to-end connection manner along the length direction of the mounting groove;
the rotor assembly comprises a sliding seat and a coil, the sliding seat is arranged in the mounting groove and can slide along the length direction of the mounting groove, and the coil is fixedly connected with the sliding seat;
and the position detection system is fixedly connected to the rotor assembly and can read the polarity of the stator magnetic plate to acquire the position and the speed of the rotor.
2. The linear motor module according to claim 1, wherein a guide groove is formed in a side surface of the mounting groove along a length direction of the mounting groove, a receiving groove is formed in a side wall of the sliding seat, and the linear motor module further comprises a ball at least partially disposed in the receiving groove, and the ball is at least partially disposed in the guide groove.
3. The linear motor module of claim 1, wherein the position detection system comprises a detection module, a first signal processing module and a second signal processing module, the detection module, the first signal processing module and the second signal processing module are connected in a communication manner, and wherein:
the detection module is configured to sense N, S levels of the stator magnetic plates when the rotor assembly moves repeatedly and transmit sine and cosine signals to the first signal processing module;
the first signal processing module is configured to receive the sine and cosine signal and convert the sine and cosine signal into an orthogonal square wave signal;
the second signal processing module is configured to receive the orthogonal square wave signal and process the orthogonal square wave signal to obtain a current position and a current speed of the mover assembly.
4. The linear motor module of claim 1, wherein the coil is exposed to the mounting slot.
5. The linear motor module as claimed in claim 1, wherein the side surface includes a first surface, a second surface and a first inclined surface, the first inclined surface connects the first surface and the second surface, a distance between the first surfaces is greater than a width of the sliding seat, and a distance between the second surfaces is greater than a width of the mover.
6. The linear motor module as recited in claim 5, wherein said first inclined surface is provided with a plurality of step surfaces, and an intersection line formed by intersecting two adjacent step surfaces is parallel to a length direction of said base.
7. The linear motor module as recited in claim 2, wherein the stator assembly further comprises a guide member, the guide member is fixedly connected to a side surface of the mounting groove, and the guide groove is opened in the guide member; wherein the strength of the guide is greater than the strength of the base.
8. The linear motor module according to claim 7, wherein a connection groove is formed in a side surface of the mounting groove along a length direction of the mounting groove, and the guide member is fixedly inserted into the connection groove.
9. The linear motor module according to claim 1, further comprising a sensor and a sensing piece, wherein the sensor is connected to an outer wall of the base, the sensing piece is fixedly connected to the sliding seat, the sensing piece can move and pass through the sensor, and the sensor can sense the position of the sensing piece.
10. An electrical consumer, characterized in that it comprises a linear electric motor according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122924490.2U CN216490176U (en) | 2021-11-25 | 2021-11-25 | Linear motor module and electric equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122924490.2U CN216490176U (en) | 2021-11-25 | 2021-11-25 | Linear motor module and electric equipment |
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| CN216490176U true CN216490176U (en) | 2022-05-10 |
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| CN202122924490.2U Active CN216490176U (en) | 2021-11-25 | 2021-11-25 | Linear motor module and electric equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115385033A (en) * | 2022-09-29 | 2022-11-25 | 深圳市兰星琪科技有限公司 | Double-feedback positioning movement module and annular production line |
| CN117040205A (en) * | 2023-08-28 | 2023-11-10 | 佛山市增广智能科技有限公司 | Device and method for six-degree-of-freedom position sensing of planar motor |
-
2021
- 2021-11-25 CN CN202122924490.2U patent/CN216490176U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115385033A (en) * | 2022-09-29 | 2022-11-25 | 深圳市兰星琪科技有限公司 | Double-feedback positioning movement module and annular production line |
| CN117040205A (en) * | 2023-08-28 | 2023-11-10 | 佛山市增广智能科技有限公司 | Device and method for six-degree-of-freedom position sensing of planar motor |
| CN117040205B (en) * | 2023-08-28 | 2024-04-26 | 佛山市增广智能科技有限公司 | Device and method for six-degree-of-freedom position sensing of planar motor |
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