Motor limiting device and motor limiting equipment
By setting vortex-shaped spiral grooves and strip grooves in the motor limit device, and using the sliding cooperation of the limit slider, the problem of precise control of the motor in the application of adjustment knob is solved, thus realizing stable adjustment of the motor and safety of the equipment.
Patent Information
- Application Number
- CN202520484563.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-19
AI Technical Summary
In existing applications of motors with adjustment knobs, high-power motors are difficult to control precisely, and are prone to exceeding the maximum torque of the adjustment knob, leading to equipment damage. On the other hand, low-power motors cannot meet the minimum torque requirements, affecting normal use.
Design a motor limiting device, including a limiting plate, a limiting block, and a limiting slider. By setting vortex-shaped spiral grooves and strip grooves on the limiting plate and the limiting block, and utilizing the sliding engagement of the limiting slider in the grooves, the relative movement of the limiting plate and the limiting block is restricted, thereby achieving mechanical limiting and ensuring precise control of the motor and safety of the equipment.
While achieving a large adjustment range, the safety of the equipment and the precise control of the motor are ensured, equipment damage is avoided, and stable motor adjustment is achieved.
Smart Images
Figure CN223942544U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to motor technical field, especially relate to a motor limiting device and motor limiting equipment. BACKGROUND
[0002] In the adjustment mechanism of some equipment, motors are applied to the screwing operation of adjustment knobs. For example, in a coaxial coplanar linear accelerator, the AFC adjustment knob of a magnetron is screwed by a motor.
[0003] However, this adjustment mode has certain limitations in the selection and application of motors. For some types of adjustment knobs, the range between the minimum torque and the maximum torque is quite strict. On the one hand, a motor with large power, although having sufficient power, can meet the minimum torque required by the adjustment knob, but it is difficult to achieve precise control in the adjustment process, and it is easy to exceed the maximum torque required by the adjustment knob, i.e., to drive the adjustment knob to rotate beyond the knob adjustment range, thereby damaging the equipment. On the other hand, a motor with small power may not be able to reach the minimum torque required by the adjustment knob, making it difficult to meet the adjustment demand and affecting its normal use.
[0004] Therefore, how to overcome the above technical defects is a problem to be solved by those skilled in the art. INVENTION CONTENTS
[0005] The utility model aims at providing a motor limiting device and motor limiting equipment, which can realize large adjustment while ensuring the safety of the equipment and the precise control of the motor.
[0006] To solve the above technical problems, the utility model provides a motor limiting device, which comprises a motor, a limiting plate, a limiting block and a limiting slider.
[0007] The fixed end of the motor is used to be installed on the equipment, and the rotating shaft of the motor is used to be connected with the adjustment knob of the equipment.
[0008] The limiting plate is used to be connected with the equipment, or the limiting plate is connected with the fixed end of the motor, the limiting block is connected with the rotating shaft, one of the limiting plate and the limiting block is provided with a spiral vortex groove which is centered on the rotating shaft and spreads from inside to outside, and the other of the limiting plate and the limiting block is provided with a strip-shaped groove arranged along the radial direction.
[0009] The limiting slider is slidingly fitted in the spiral vortex groove and the strip-shaped groove, and is used to limit the relative movement of the limiting plate and the limiting block at the limit of the spiral vortex groove or the strip-shaped groove.
[0010] Optionally, in the above motor limiting device, the limiting slider is a limiting ball.
[0011] Optionally, in the above-mentioned motor limiting device, the vortex-shaped spiral groove is a through groove or a non-through groove;
[0012] And / or, the strip groove is a through groove or a non-through groove.
[0013] Optionally, the above-mentioned motor limiting device further includes a motor fixing bracket, wherein the fixed end of the motor is mounted on the outer shell of the equipment through the motor fixing bracket, and the limiting plate is connected to the fixed end of the motor through the motor fixing bracket.
[0014] Optionally, in the above-mentioned motor limiting device, the rotating shaft passes through the motor fixing frame, the limiting plate is disposed on the side of the motor fixing frame away from the fixed end of the motor, and the limiting block is located on the rotating shaft between the outer shell and the motor fixing frame.
[0015] Optionally, in the above-mentioned motor limiting device, the edge of the motor fixing frame is evenly arranged with a plurality of mounting feet, and the edge of the limiting plate is provided with a plurality of clearance notches for just fitting into the mounting feet.
[0016] Optionally, in the above-mentioned motor limiting device, the limiting plate is a disc-shaped structure with a spiral groove, and the limiting block is a strip-shaped structure with a strip groove.
[0017] Optionally, in the above-mentioned motor limiting device, when the motor can only rotate forward or in reverse, the initial position of the limiting slider is the first end of the innermost ring of the spiral groove and the first end of the strip groove near the rotating shaft, and the ending position of the limiting slider is the second end of the outermost ring of the spiral groove and the second end of the strip groove away from the rotating shaft.
[0018] When the motor can rotate forward and reverse, the initial position of the limiting slider is the middle of the spiral groove and the strip groove. When the motor rotates forward, the ending position of the limiting slider is the first end of the innermost circle of the spiral groove and the first end of the strip groove near the rotating shaft. When the motor rotates in reverse, the ending position of the limiting slider is the second end of the outermost circle of the spiral groove and the second end of the strip groove away from the rotating shaft.
[0019] This utility model also provides a motor limiting device, including a housing, an adjustment knob, and a motor limiting device as described above, wherein the motor limiting device is used to limit the adjustment amount of the adjustment knob.
[0020] Optionally, in the above-mentioned motor limiting device, the rotating shaft of the motor is connected to the adjusting knob via a coupling.
[0021] This utility model provides a motor limiting device, the advantages of which are:
[0022] A limiting plate is fixed to the fixed end of the equipment or motor, and a limiting block is connected to the rotating shaft of the motor. The rotating shaft simultaneously drives the adjustment knob of the equipment. One of the limiting plate and the limiting block has a spiral groove, and the other has a strip groove. A limiting slider is slidably fitted within the spiral groove and the strip groove. When the motor is running, the rotating shaft drives the limiting block to rotate relative to the limiting plate. The strip groove drives the limiting slider to roll within the spiral groove. When the limiting block rotates to the limit position of the limiting slider in the spiral groove or the strip groove, it restricts the relative movement of the limiting plate and the limiting block. This mechanical assembly of the limiting plate, limiting block, and limiting slider achieves mechanical limiting, thus achieving rotational limiting. This allows for a large adjustment range while ensuring equipment safety and precise motor control.
[0023] This utility model also provides a motor limiting device with the above-mentioned motor limiting device, which has the same beneficial effects. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0025] Figure 1 A schematic diagram of the structure of a motor limiting device installed on a device according to an embodiment of this utility model;
[0026] Figure 2 This is a schematic diagram of the motor limiting device provided in an embodiment of the present invention from one perspective.
[0027] Figure 3 A schematic diagram of the motor limiting device provided in an embodiment of this utility model from another perspective;
[0028] Figure 4 for Figure 3 A magnified view of a section (allowing for perspective observation of the spiral grooves, strip grooves, and limiting sliders).
[0029] Figure 5 This is a schematic diagram of the structure of the limiting plate provided in an embodiment of the present utility model;
[0030] Figure 6 A front view of the limiting plate provided in an embodiment of this utility model;
[0031] Figure 7 This is a schematic diagram of the structure of the limiting block provided in an embodiment of the present utility model;
[0032] Figure 8 The front view of the limiting block provided in the embodiment of this utility model.
[0033] In the image above:
[0034] 110 - Motor; 120 - Motor mounting bracket; 130 - Coupling;
[0035] 200 - Equipment; 210 - Adjustment knob; 220 - Housing;
[0036] 310-Limiting plate; 311-Whirlpool groove; 320-Limiting block; 321-Strip groove; 330-Limiting slider. Detailed Implementation
[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0038] The core of this utility model is to provide a motor limiting device and motor limiting equipment, which can achieve a large adjustment range while ensuring the safety of the equipment and the precise control of the motor.
[0039] To enable those skilled in the art to better understand the technical solutions provided by this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0040] Specifically, such as Figures 1-4 As shown, the present invention provides a motor limiting device for limiting the rotation range of the adjustment knob 210 driven by the rotation shaft of the motor 110, including the motor 110, the limiting plate 310, the limiting block 320 and the limiting slider 330.
[0041] The fixed end of the motor 110 is used to be installed on the device 200, and the rotating shaft of the motor 110 is used to connect with the adjustment knob 210 of the device 200. The rotation of the rotating shaft drives the adjustment knob 210 to rotate.
[0042] In one embodiment, the limiting plate 310 can be connected to the device 200, specifically to the housing 220 of the device 200. In another embodiment, the limiting plate 310 can be connected to the fixed end of the motor 110, or the fixed end of the motor 110 can form the limiting plate 310. The limiting plate 310 is always fixed relative to the motor 110, and the limiting block 320 is connected to the rotating shaft, thus enabling the limiting block 320 to rotate relative to the limiting plate 310.
[0043] One of the limiting plate 310 and the limiting block 320 has a vortex-shaped spiral groove 311 that radiates outward from the center of the rotation axis. The spiral groove 311 is a spiral that radiates outward from the center point. The other of the limiting plate 310 and the limiting block 320 has a strip-shaped groove 321 that is arranged radially.
[0044] The limiting slider 330 is slidably configured within the spiral groove 311 and the strip groove 321 to limit the relative movement of the limiting plate 310 and the limiting block 320 at their extreme positions. It should be noted that the extreme positions of the spiral groove 311 include the first end of the innermost ring and the second end of the outermost ring, while the extreme positions of the strip groove 321 include the first end near the rotating shaft and the second end away from the rotating shaft. The maximum adjustment amount by which the motor 110 drives the adjusting knob to rotate is reached when either the spiral groove 311 or the strip groove 321 reaches its extreme position (i.e., the end of the groove). It should be noted that by adaptively designing the shape of the spiral groove 311 and the strip groove 321, the rotating shaft can smoothly drive the limiting slider 330 to slide within both the spiral groove 311 and the strip groove 321 during rotation.
[0045] This utility model provides a motor limiting device, in which a limiting plate 310 is fixed to the fixed end of the device 200 or the motor 110, and a limiting block 320 is connected to the rotating shaft of the motor 110. The rotating shaft can simultaneously drive the adjustment knob 210 of the device 200 to rotate. One of the limiting plate 310 and the limiting block 320 has a spiral groove 311, and the other has a strip groove 321. The limiting slider 330 is slidably disposed in the spiral groove 311 and the strip groove 321.
[0046] To facilitate observation of the fit between the limiting plate 310 and the limiting block 320, please refer to the following: Figure 4The diagram shows a perspective view. When the motor 110 is operating, the rotating shaft drives the limiting block 320 to rotate relative to the limiting plate 310. This, in turn, drives the limiting slider 330 to roll within the spiral groove 311 via the strip groove 321. When the limiting block 320 rotates to the limit position of the limiting slider 330 within the spiral groove 311 or the strip groove 321, the limiting slider 330 can no longer roll, thus limiting the relative movement of the limiting plate 310 and the limiting block 320. The mechanical assembly consisting of the limiting plate 310, the limiting block 320, and the limiting slider 330 achieves mechanical limiting, thereby achieving rotational limiting. This ensures equipment safety and precise motor control while allowing for a large adjustment range.
[0047] In a specific embodiment, the limiting slider 330 is a limiting ball, as can be seen in [reference needed]. Figure 4 To prevent the limiting balls from detaching from the spiral groove 311 and the strip groove 321, it is necessary to ensure that the limiting plate 310 and the limiting block 320 are close to each other and can rotate relative to each other. The limiting balls are more suitable for limiting rotational or oscillating movements. Of course, with the development of technology, the limiting slider 330 can also be designed as a strip slider / cylindrical slider with balls rotatably mounted at both ends. The strip slider / cylindrical slider is also equipped with a synchronous rotation support rod, with the balls at both ends placed in the spiral groove 311 and the strip groove 321 respectively, and the synchronous rotation support rod connected to the rotation shaft.
[0048] In a specific embodiment, the spiral groove 311 is a through groove or a non-through groove, and the strip groove 321 is a through groove or a non-through groove. In particular, when the spiral groove 311 and the strip groove 321 are through grooves, the limiting slider 330 is in smooth contact with the groove wall, and both ends of the limiting slider 330 have anti-disengagement structures.
[0049] This solution also includes a motor mounting bracket 120, the fixed end of the motor 110 is mounted on the equipment 200 through the motor mounting bracket 120, and the limiting plate 310 is connected to the fixed end of the motor 110 through the motor mounting bracket 120.
[0050] To improve the stability of the connection, the rotating shaft passes through the motor mounting bracket 120. Correspondingly, the motor mounting bracket 120, the limiting plate 310 and the limiting block 320 are all provided with rotating shaft mounting holes at their relative positions.
[0051] The limiting plate 310 is located on the side of the motor mounting bracket 120 away from the fixed end of the motor 110, and the limiting block 320 is located on the rotation axis between the housing 220 and the motor mounting bracket 120.
[0052] Multiple mounting feet are evenly arranged on the edge of the motor mounting bracket 120, thereby forming an installation space between the housing 220 and the motor mounting bracket 120 for mounting the limiting plate 310 and the limiting block 320.
[0053] To avoid wobbling of the mounting feet and limit plate 310, the edge of limit plate 310 is provided with multiple clearance notches for fitting snugly into the mounting feet. The mounting feet and clearance notches correspond one-to-one, allowing limit plate 310 to fit snugly into the mounting space of motor mounting bracket 120, and the rotating shaft mounting hole on limit plate 310 is aligned with the rotating shaft mounting hole on motor mounting bracket 120.
[0054] Based on the above specific embodiments, such as Figures 5-6 As shown, the limiting plate 310 has a disc-shaped structure, and a spiral groove 311 is formed on the limiting plate 310. Figures 7-8 As shown, the limiting block 320 has a strip-shaped structure, and a strip groove 321 is provided on the limiting block 320.
[0055] Specifically, the limiting plate 310 is bolted to the motor mounting bracket 120, and the limiting block 320 is connected to the rotating shaft of the motor 110 by a pin passing through the rotating shaft mounting hole.
[0056] To optimize the arrangement of the spiral groove 311 and the strip groove 321, the number of rotations of the rotating shaft can be limited by the number of rotations of the spiral groove 311. When the motor 110 can only rotate forward or in reverse, the initial position of the limiting slider 330 is the first end of the innermost ring of the spiral groove 311 and the first end of the strip groove 321 near the rotating shaft, and the ending position of the limiting slider 330 is the second end of the outermost ring of the spiral groove 311 and the second end of the strip groove 321 away from the rotating shaft.
[0057] When the motor 110 can rotate forward and reverse, the initial position of the limiting slider 330 is the middle of the spiral groove 311 and the strip groove 321. When the motor 110 rotates forward, the ending position of the limiting slider 330 is the first end of the innermost ring of the spiral groove 311 and the first end of the strip groove 321 near the rotating shaft. When the motor 110 rotates in reverse, the ending position of the limiting slider 330 is the second end of the outermost ring of the spiral groove 311 and the second end of the strip groove 321 away from the rotating shaft.
[0058] In addition, this utility model also provides a motor limiting device, including a housing 220, an adjustment knob 210, and a motor limiting device as described in the above specific embodiment. The motor limiting device is used to limit the adjustment amount of the adjustment knob 210.
[0059] Obviously, motor limiting devices that include the aforementioned motor limiting device have the same beneficial effects, which will not be elaborated here.
[0060] Specifically, the rotating shaft of motor 110 is connected to the adjusting knob 210 via coupling 130. This motor limiting device restricts the rotation of the motor shaft, ensuring that the adjusting knob 210 can rotate without being damaged.
[0061] The aforementioned motor limiting device can be a coaxial and coplanar linear accelerator. The motor limiting device is applied to the AFC adjustment knob of the magnetron, and the motor 110 is a geared motor.
[0062] like Figures 1-8 As shown, the geared motor is mounted on a motor mounting bracket 120, which is installed on the electromagnet housing. The rotating shaft of the geared motor passes through the motor mounting bracket 120 and is connected to the adjusting knob 210 via a coupling. A limiting plate 310 is installed on the inner side of the motor mounting bracket 120, and the inner side of the limiting plate 310 has two concentric spiral grooves 311. A limiting block 320 is installed on the rotating shaft of the motor 110. The side of the limiting block 320 facing the spiral grooves 311 has a strip groove 321, and a limiting ball is installed in the strip groove 321. The limiting ball is also placed in the spiral grooves 311. When the rotating shaft rotates, it drives the limiting block 320 to rotate as well. The limiting ball is driven to roll in the spiral groove 311 through the strip groove 321. Ultimately, the number of rotations of the rotating shaft is limited by the number of rotations of the spiral groove 311. When the limiting ball rolls to the end of the spiral structure of the spiral groove 311 (the second end of the outermost ring of the spiral groove 311), the limiting ball can no longer roll, and the limiting block 320 can no longer rotate, thus limiting the rotation of the rotating shaft.
[0063] In the description of this application, it should be understood that the orientation descriptions, such as up, down, inside, outside, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0064] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0065] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. A motor limiting device, characterized in that, It includes a motor (110), a limiting plate (310), a limiting block (320), and a limiting slider (330); The fixed end of the motor (110) is used to be mounted on the device (200), and the rotating shaft of the motor (110) is used to be connected to the adjustment knob (210) of the device (200); The limiting plate (310) is used to connect to the device (200), or the limiting plate (310) is connected to the fixed end of the motor (110), the limiting block (320) is connected to the rotating shaft, one of the limiting plate (310) and the limiting block (320) is provided with a vortex-shaped spiral groove (311) radiating outward from the center of the rotating shaft, and the other of the limiting plate (310) and the limiting block (320) is provided with a strip groove (321) arranged radially. The limiting slider (330) is slidably disposed in the spiral groove (311) and the strip groove (321) to limit the relative movement of the limiting plate (310) and the limiting block (320) at the limit position of the spiral groove (311) or the strip groove (321).
2. The motor limiting device according to claim 1, characterized in that, The limiting slider (330) is a limiting ball.
3. The motor limiting device according to claim 1, characterized in that, The vortex-shaped spiral groove (311) is a through groove or a non-through groove; And / or, the strip groove (321) is a through groove or a non-through groove.
4. The motor limiting device according to claim 1, characterized in that, It also includes a motor mounting bracket (120), the fixed end of the motor (110) is mounted on the outer shell (220) of the device (200) through the motor mounting bracket (120), and the limiting plate (310) is connected to the fixed end of the motor (110) through the motor mounting bracket (120).
5. The motor limiting device according to claim 4, characterized in that, The rotating shaft passes through the motor mounting bracket (120), the limiting plate (310) is disposed on the side of the motor mounting bracket (120) away from the fixed end of the motor (110), and the limiting block (320) is located on the rotating shaft between the outer shell (220) and the motor mounting bracket (120).
6. The motor limiting device according to claim 5, characterized in that, The motor mounting bracket (120) has multiple mounting feet evenly arranged on its edge, and the limiting plate (310) has multiple clearance notches on its edge for fitting snugly into the mounting feet.
7. The motor limiting device according to claim 1 or 6, characterized in that, The limiting plate (310) has a disc-shaped structure and a spiral groove (311) is provided on the limiting plate (310). The limiting block (320) has a strip-shaped structure and a strip groove (321) is provided on the limiting block (320).
8. The motor limiting device according to claim 7, characterized in that, When the motor (110) can only rotate forward or in reverse, the initial position of the limiting slider (330) is the first end of the innermost ring of the spiral groove (311) and the first end of the strip groove (321) near the rotating shaft, and the ending position of the limiting slider (330) is the second end of the outermost ring of the spiral groove (311) and the second end of the strip groove (321) away from the rotating shaft. When the motor (110) can rotate forward and reverse, the initial position of the limiting slider (330) is the middle of the spiral groove (311) and the strip groove (321). When the motor (110) rotates forward, the ending position of the limiting slider (330) is the first end of the innermost ring of the spiral groove (311) and the first end of the strip groove (321) near the rotating shaft. When the motor (110) rotates in reverse, the ending position of the limiting slider (330) is the second end of the outermost ring of the spiral groove (311) and the second end of the strip groove (321) away from the rotating shaft.
9. A motor limiting device, characterized in that, It includes a housing (220), an adjustment knob (210), and a motor limiting device as described in any one of claims 1-8, the motor limiting device being used to limit the adjustment amount of the adjustment knob (210).
10. The motor limiting device according to claim 9, characterized in that, The rotating shaft of the motor (110) is connected to the adjusting knob (210) via a coupling (130).