High-thrust linear motor stator structure and linear motor
By designing a high-thrust linear motor stator structure and using closely arranged magnets and stator base plates, the increase in weight, temperature and cost of linear motors in the prior art when increasing output power and power density is solved, higher output power and power density is achieved, and the reliability and stability of the motor are improved.
Patent Information
- Application Number
- CN202421569554.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-02
AI Technical Summary
While increasing the output power and power density, existing linear motors often have significant increases in weight, temperature and cost, and it is difficult to achieve significant improvement in overall performance without a significant increase in costs.
By designing a high-thrust linear motor stator structure, the stator base plate is combined with N stator sections, and M magnets are fixed on each stator section. The magnets are neatly arranged and closely arranged. The thickness of the magnets and stator base plate is 2mm to increase magnetic flux and improve motor efficiency.
It realizes that the output power and power density of linear motors can be effectively improved without adding too much weight, temperature and cost, and the maximum thrust increases by 25%, while improving the reliability and stability of the motor.
Smart Images
Figure CN222915866U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of linear motors, and in particular, to a high-thrust linear motor stator structure and a linear motor. Background Art
[0002] As a device that directly converts electrical energy into mechanical energy of linear motion, linear motors have a wide range of applications in industrial automation, transportation, precision positioning and other fields. However, with the continuous improvement of technical requirements, higher demands are also put forward for the output power and power density of linear motors. It is necessary for linear motors to have higher output power and higher power density in order to increase the thrust of linear motors and reduce the volume. While traditional linear motors improve the output power and power density, they are often accompanied by a significant increase in weight, temperature and cost, which to a certain extent limits the further expansion of their application scope.
[0003] Currently, the industry mainly improves the performance of linear motors by means of optimizing the motor structure, selecting high-performance materials, and improving control algorithms. For example, in order to increase the output power and power density of linear motors, existing technical solutions usually use more closely wound coils in linear motors to increase the coil density, or use permanent magnet materials with high magnetic energy product or iron core materials with high magnetic permeability to increase the magnetic field strength. However, these solutions often need to make trade-offs among multiple performance indicators, and it is difficult to achieve a significant improvement in comprehensive performance without a substantial increase in cost. Therefore, how to effectively improve the output power and power density of linear motors without increasing too much weight, temperature and cost has become an urgent technical problem to be solved. Summary of the Utility Model
[0004] In order to effectively improve the output power and power density of linear motors, the present application provides a high-thrust linear motor stator structure and a linear motor.
[0005] In a first aspect, a high-thrust linear motor stator structure provided by the present application adopts the following technical solution:
[0006] A high-thrust linear motor stator structure includes a stator base plate and magnets arranged on the stator base plate. The stator base plate includes N stator segments, and M magnets are arranged on each stator segment. Wherein, N is an integer greater than or equal to 3, M is an integer greater than or equal to 20, the N stator segments are arranged in parallel along the width direction, the M magnets are arranged at intervals along the length direction of the stator segment, the thickness of the stator base plate is 2 mm, and the thickness of the magnet is 2 mm, reserving a layout space for the mover structure.
[0007] By adopting the above technical solution, a stator structure is composed of a stator base plate and magnets. Among them, the stator base plate is composed of N stator segments combined together. M magnets are fixed on each stator segment. The magnets are arranged neatly and closely. Such a design helps to increase the magnetic flux, improve the efficiency and thrust of the motor. By increasing the number of magnets and keeping the same distance, the magnetic flux can be increased, so that the maximum thrust of the motor increases by 25%, which is beneficial to improving the performance of the motor and enhancing its applicability in various applications. The thickness of the magnets and the stator base plate is 2 mm. The thinner stator base plate and magnets can, on the one hand, reduce the overall size and weight of the motor, and on the other hand, reserve layout space for the mover structure, enabling the mover structure to have more space to install components to improve the power. By optimizing the thickness, arrangement method and spacing of the magnets and the stator base plate, the design of the linear motor can achieve higher output power and power density, while improving the reliability and stability of the motor.
[0008] Optionally, mounting holes are respectively arranged on both sides of the magnets on the stator base plate, and the stator base plate is installed and positioned through the mounting holes.
[0009] By adopting the above technical solution, fixing the stator base plate in position through the mounting holes can ensure that the stator will not move or shake during operation. This helps to maintain the stability and performance of the motor and reduce the risk of failures caused by vibration or other factors. Moreover, the design of fixing the stator base plate with mounting holes makes the maintenance and replacement of the stator base plate more convenient. If maintenance or replacement is needed, only the bolts or fixing parts at the mounting holes need to be disassembled, and the stator base plate can be easily removed for necessary maintenance or replacement operations.
[0010] Optionally, the stator base plate is a stainless steel sheet.
[0011] By adopting the above technical solution, the stainless steel sheet has excellent corrosion resistance and can resist the erosion of moisture, chemical substances or other environmental factors. This enables the stator base plate to operate stably for a long time in various harsh working environments, extending the service life of the motor. In addition, stainless steel has high mechanical strength and can withstand large forces and pressures without being easily deformed or damaged. This ensures that the stator base plate can maintain a stable structure during the operation of the motor and will not be damaged by external forces.
[0012] Optionally, the adjacent stator segments are connected by a mortise and tenon connection method.
[0013] By adopting the above technical solution, the mortise and tenon connection provides good connection strength, which can ensure the stability between adjacent stator sections, help maintain the flatness of the stator base plate and the consistency of the geometric shape, thus ensuring the normal operation of the motor. If maintenance is required for the motor or certain parts of the stator base plate need to be replaced, the mortise and tenon connection can also make the disassembly and replacement process more convenient and fast, improving the stability, structural consistency and assembly efficiency of the motor.
[0014] Optionally, a stator cover plate is provided on the stator section, and the stator cover plate is used to cover the M magnets.
[0015] By adopting the above technical solution, the stator cover plate can effectively protect the magnets from the external environment, such as dust, moisture, etc., and prevent the magnets from being accidentally collided or damaged. The stator cover plate can help stabilize the positions of the magnets by covering the magnets and ensure that the spacing between adjacent magnets on the stator base plate remains consistent, which helps maintain the stability of the magnetic flux, thereby improving the performance and efficiency of the motor.
[0016] Optionally, the stator cover plate is provided with positioning grooves for the magnets to be embedded, and the bottom of the positioning grooves tightly presses the upper surface of the magnets to fix the magnets on the stator section.
[0017] By adopting the above technical solution, the bottom of the positioning groove tightly presses the upper surface of the magnet, thereby effectively fixing the magnet on the stator section. This fixing method can prevent the magnet from loosening or moving during the operation of the motor, maintaining the stability and reliability of the motor.
[0018] In a second aspect, a linear motor provided by the present application adopts the following technical solution:
[0019] A linear motor includes a stator structure and a mover structure, and the stator structure is the above-mentioned linear motor stator structure.
[0020] By adopting the above technical solution, the stator structure and the mover structure of the linear motor cooperate together to achieve linear motion through the action of electromagnetic force.
[0021] Optionally, the mover structure includes a base, a plurality of positioning teeth spaced apart on one side of the base close to the stator structure, and a coil winding fixedly sleeved on the positioning teeth.
[0022] By adopting the above technical solution, the base is the main supporting component of the mover structure. It is usually a sturdy frame or platform used to support and fix other components of the mover structure. A number of positioning teeth are arranged at intervals on the base. These teeth are similar to protruding or projecting structures and are used to position and guide the position of the coil windings. The setting of these positioning teeth helps to ensure the spacing between adjacent coil windings, so as to achieve stable movement and precise control. The coil windings are usually made of insulated wires. When an electric current passes through them, they generate a magnetic field that interacts with the magnetic field in the stator structure, thereby generating a force to drive the movement of the mover structure, which is beneficial to improving the accuracy and stability.
[0023] Optionally, a positioning block is fixedly arranged on the side of the base away from the positioning teeth. A positioning hole is arranged on the positioning block, and the base is connected to an external device through the positioning hole.
[0024] By adopting the above technical solution, in the mover structure, a positioning block is fixed on the side of the base away from the positioning teeth, and a positioning hole is arranged on the positioning block. The positioning block provides additional support and stability, ensuring the stability and accuracy of the mover structure during movement. Through the positioning hole, the base can be accurately connected to an external device, thereby achieving precise positioning and alignment. The connection method is usually achieved through bolts, screws or other fixing parts, which can provide a firm connection and allow for quick installation and disassembly.
[0025] Optionally, the positioning block is a T-shaped block, and a T-shaped groove for the positioning block to be embedded is arranged on the base.
[0026] By adopting the above technical solution, the design of the T-shaped block and the T-shaped groove provides a more stable connection. The T-shaped structure has a larger contact area, which can effectively disperse the pressure between the connecting parts, thereby increasing the stability and firmness of the connection. Due to the good contact area and stability of the T-shaped structure, it has good wear resistance. Using the design of the T-shaped block and the T-shaped groove can provide a stable, accurate, easy-to-install and durable connection solution, which is suitable for various application scenarios requiring linear motion.
[0027] In summary, the present application consists of a stator base plate and magnets to form a stator structure. Among them, the stator base plate is composed of N stator segments, and M magnets are fixed on each stator segment. The magnets are arranged neatly and closely. Such a design helps to increase the magnetic flux, improve the efficiency and thrust of the motor. By increasing the number of magnets and maintaining the same distance, the magnetic flux can be increased, so that the maximum thrust of the motor increases by 25%, which is beneficial to improving the performance of the motor and enhancing its applicability in various applications. The thickness of the magnets and the stator base plate is 2 mm. The thinner stator base plate and magnets can, on the one hand, reduce the overall size and weight of the motor, and on the other hand, reserve layout space for the mover structure, enabling the mover structure to have more space to install components to improve the power. By optimizing the thickness, arrangement method and spacing of the magnets and the stator base plate, the design of the linear motor can achieve higher output power and power density, while improving the reliability and stability of the motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 is the overall structural schematic diagram of an embodiment of the present application;
[0029] Figure 2 is the structural schematic diagram of the stator segment and the magnets in an embodiment of the present application;
[0030] Figure 3 is the exploded view of the stator cover plate and the stator segment in an embodiment of the present application;
[0031] Figure 4 is the structural schematic diagram of the base and the coil winding in an embodiment of the present application;
[0032] Figure 5 is the exploded view of the positioning block and the base in an embodiment of the present application.
[0033] DESCRIPTION OF THE REFERENCE NUMERALS:
[0034] 1. Stator base plate; 2. Magnet; 3. Stator segment; 4. Mounting hole; 5. Stator cover plate; 6. Positioning groove; 7. Base; 8. Positioning tooth; 9. Coil winding; 10. Positioning block; 11. Positioning hole; 12. T-shaped groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0035] To make the above objects, features and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application in conjunction with the drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.
[0036] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0037] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0038] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.
[0039] Embodiment 1
[0040] The embodiment of this application discloses a high-thrust linear motor stator structure.
[0041] Referring to Figure 1 and Figure 2 , a high-thrust linear motor stator structure includes a stator base plate 1 and magnets 2 fixed on the stator base plate 1. The stator base plate 1 is respectively provided with mounting holes 4 on both sides of the magnets 2. By fixing the stator base plate 1 in position through the mounting holes 4, it can ensure that the stator will not move or shake during operation, which helps to maintain the stability and performance of the motor and reduce the risk of failure caused by vibration or other factors. In order to further improve the service life of the stator base plate 1, the stator base plate 1 is made of stainless steel sheet. Stainless steel has high mechanical strength and can withstand large forces and pressures without being easily deformed or damaged, which ensures that the stator base plate 1 can maintain a stable structure during the operation of the motor and will not be damaged by external forces.
[0042] Among them, the stator base plate 1 includes N stator segments 3, and M magnets 2 are fixed on each stator segment 3. N is an integer greater than or equal to 3, and M is an integer greater than or equal to 20. The N stator segments 3 are arranged side by side in the width direction, and the M magnets 2 are arranged at intervals along the length direction of the stator segment 3. The thickness of the stator base plate 1 is 2 mm, and the thickness of the magnet 2 is 2 mm, reserving a layout space for the mover structure; the stator base plate 1 is the foundation of the entire structure, with N*M magnets 2 on it. These magnets 2 are usually activated by current to generate a magnetic field, so as to interact with the mover structure and realize the movement of the motor. The thickness of the stator base plate 1 is 2 mm, and the thickness of the magnet 2 is also 2 mm. The thinner base plate and magnet 2 can reduce the overall size and weight of the motor, and reserve a layout space for the mover structure. By optimizing the thickness, arrangement method and spacing of the magnet 2 and the stator base plate 1, the design of the linear motor can achieve higher output power and power density, while improving the reliability and stability of the motor.
[0043] To further improve the stability of the stator base plate 1, adjacent stator segments 3 are connected by a mortise and tenon connection method. The mortise and tenon connection provides good connection strength, which can ensure the stability between adjacent stator segments 3, contribute to maintaining the flatness and geometric shape consistency of the stator base plate 1, and thus ensure the normal operation of the motor. To further maintain the stability and performance of the motor, mounting holes 4 are respectively provided on both sides of the magnet 2 on the stator base plate 1. By fixing the stator base plate 1 through the mounting holes 4, it can be ensured that the stator will not move or shake during operation, and reduce the risk of failure caused by vibration or other factors. And the design of fixing the stator base plate 1 by using the mounting holes 4 makes the maintenance and replacement of the stator base plate 1 more convenient. If maintenance or replacement is needed, just remove the bolts or fasteners at the mounting holes 4, and the stator base plate 1 can be easily removed for necessary maintenance or replacement operations.
[0044] As Figure 2 and Figure 3 shown, a stator cover plate 5 for covering the M magnets 2 is installed on the stator segment 3. Positioning grooves 6 for the magnets 2 to be embedded are provided on the stator cover plate 5. The bottom of the positioning groove 6 tightly presses the upper surface of the magnet 2 to fix the magnet 2 on the stator segment 3. Among them, the stator cover plate 5 can effectively protect the magnet 2 from the external environment, such as dust, moisture, etc., and prevent the magnet 2 from being accidentally collided or damaged. The stator cover plate 5 can help stabilize the position of the magnet 2 by covering the magnet 2 and ensure that the spacing between adjacent magnets 2 on the stator base plate 1 remains consistent, which helps to maintain the stability of the magnetic flux, thereby improving the performance and efficiency of the motor. The bottom of the positioning groove 6 tightly presses the upper surface of the magnet 2, thereby effectively fixing the magnet 2 on the stator segment 3. This fixing method can prevent the magnet 2 from loosening or moving during the operation of the motor, and maintain the stability and reliability of the motor.
[0045] Embodiment 2
[0046] An embodiment of the present application discloses a linear motor.
[0047] Referring to Figure 4 and Figure 5 , a linear motor includes a stator structure and a mover structure. The stator structure is the linear stator structure described in Embodiment 1. Among them, the mover structure includes a base 7, a plurality of positioning teeth 8, and a coil winding 9. The plurality of positioning teeth 8 are fixedly arranged at intervals on one side of the base 7 close to the stator structure. The coil winding 9 is fixedly sleeved on the positioning teeth 8. The base 7 is the main supporting component of the mover structure and is usually a solid frame or platform for supporting and fixing other components of the mover structure. A plurality of positioning teeth 8 are arranged at intervals on the base 7. These teeth are similar to protruding or projecting structures for positioning and guiding the position of the coil winding 9. The arrangement of these positioning teeth 8 helps to ensure the spacing between adjacent coil windings 9 to achieve stable movement and precise control.
[0048] In the mover structure, a positioning block 10 is fixed on the side of the base 7 away from the positioning teeth 8, and a positioning hole 11 is provided in the positioning block 10. The positioning block 10 provides additional support and stability, ensuring the stability and accuracy of the mover structure during movement. Through the positioning hole 11, the base 7 can be precisely connected to external equipment, thereby achieving precise positioning and alignment. The connection method is usually achieved through bolts, screws or other fixing parts, which can provide a firm connection and allow for quick installation and disassembly. To improve the stability of the connection between the positioning block 10 and external equipment, the positioning block 10 is a T-shaped block, and the base 7 is provided with a T-shaped groove 12 for the positioning block 10 to be embedded. The T-shaped structure has a large contact area, which can effectively disperse the pressure between the connecting parts, thereby increasing the stability and firmness of the connection.
[0049] The implementation principle of a high-thrust linear motor stator structure in an embodiment of the present application is as follows: The stator structure is composed of a stator base plate 1 and magnets 2. Among them, the stator base plate 1 is composed of N stator segments 3 combined. M magnets 2 are fixed on each stator segment 3. The magnets 2 are arranged neatly and closely. Such a design helps to increase the magnetic flux, improve the efficiency and thrust of the motor. By increasing the number of magnets 2 and keeping the same distance, the magnetic flux can be increased, so that the maximum thrust of the motor increases by 25%, which is beneficial to improving the performance of the motor and enhancing its applicability in various applications; the thickness of the magnets 2 and the stator base plate 1 is 2 mm. The thinner stator base plate 1 and magnets 2 can, on the one hand, reduce the overall size and weight of the motor, and on the other hand, reserve a layout space for the mover structure, enabling the mover structure to have more space to install components to increase the power. By optimizing the thickness, arrangement mode and spacing of the magnets 2 and the stator base plate 1, the design of the linear motor can achieve higher output power and power density, while improving the reliability and stability of the motor.
[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.
Claims
1. A high thrust linear motor stator structure, characterized in that: The invention comprises a stator base plate (1) and a magnet (2) arranged on the stator base plate (1); the stator base plate (1) comprises N stator segments (3); each stator segment (3) is provided with M magnets (2); wherein N is an integer greater than or equal to 3, and M is an integer greater than or equal to 20; the N stator segments (3) are arranged in parallel along the width direction, and the M magnets (2) are arranged at intervals along the length direction of the stator segments (3); the thickness of the stator base plate (1) is 2 mm, and the thickness of the magnets (2) is 2 mm, so as to reserve space for the moving structure.
2. A high thrust linear motor stator structure according to claim 1, characterized in that: The stator base plate (1) is provided with mounting holes (4) on both sides of the magnet (2), respectively, and the stator base plate (1) is installed and positioned through the mounting holes (4).
3. The high thrust linear motor stator structure according to claim 1, characterized in that: The stator bottom plate (1) is a stainless steel sheet.
4. The high thrust linear motor stator structure according to claim 1, characterized in that: Adjacent stator sections (3) are connected by means of mortise and tenon joints.
5. The high thrust linear motor stator structure according to claim 1, characterized in that: A stator cover plate (5) is provided on the stator section (3), and the stator cover plate (5) is used to cover the M magnets (2).
6. A high thrust linear motor stator structure according to claim 5, characterized in that: The stator cover plate (5) is provided with a positioning groove (6) for the magnet (2) to be embedded, and the bottom of the positioning groove (6) is pressed tightly against the upper surface of the magnet (2) to fix the magnet (2) on the stator section (3).
7. A linear motor, comprising a stator structure and a mover structure, characterized in that: The stator structure is the linear motor stator structure according to any one of claims 1 to 6.
8. A linear motor according to claim 7, characterized in that: The mover structure comprises a base (7), a plurality of positioning teeth (8) arranged at intervals on one side of the base (7) close to the stator structure, and a coil winding (9) fixedly sleeved on the positioning teeth (8).
9. A linear motor according to claim 8, characterized in that: A positioning block (10) is fixedly arranged on one side of the base (7) away from the positioning tooth (8), a positioning hole (11) is arranged on the positioning block (10), and the base (7) is connected to an external device through the positioning hole (11).
10. A linear motor according to claim 9, characterized in that: The positioning block (10) is a T-shaped block, and the base (7) is provided with a T-shaped groove (12) for the positioning block (10) to be embedded.