Motor spring chuck antiskid structure
By setting sliders and keyways on the motor ring and combining spring clips and cover grooves with conical structures, the problem of easy slippage between the motor rotor and the centrifuge rotor in the prior art is solved, stable connection is achieved, and centrifugal efficiency is improved and equipment security.
Patent Information
- Application Number
- CN202421016065.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-11
AI Technical Summary
The connection between the rotor of the existing centrifuge and the spring clip of the motor is easy to slip, resulting in inefficient centrifugal efficiency or equipment damage, and may even cause personal injury.
An anti-slip structure of the motor spring chuck is designed. By setting a slider on the motor ring and cooperating with the keyway on the motor rotor, the slider is arranged between two adjacent shrapnels, combining the spring clip and cover with the conical structure. The groove uses the cooperation of bolts and screw holes to achieve a stable connection between the motor rotor and the centrifuge rotor assembly to prevent slippage.
It effectively prevents slippage during the rotor rotation by driving the motor, realizes a stable connection between the motor rotor and the centrifuge rotor assembly, improves the efficiency of centrifugal separation and the safety of the equipment, and avoids damage and leakage caused by slip.
Smart Images
Figure CN222343145U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of motor spring clamp structures, in particular to an anti-slip structure of a motor spring clamp. Background Art
[0002] A centrifuge is a device that uses centrifugal force to separate components of different densities in a mixture. When the motor drives the rotor to rotate at high speed, the different components in the mixture will be subjected to different degrees of centrifugal force due to the difference in density, thus achieving separation. This process is commonly used in laboratories and industrial production to separate liquids, solid particles, cells, proteins and other substances. A centrifuge is a device that uses centrifugal force to separate components of different densities in a mixture. When the motor drives the rotor to rotate at high speed, the different components in the mixture will be subjected to different degrees of centrifugal force due to the difference in density, thus achieving separation. This process is commonly used in laboratories and industrial production to separate liquids, solid particles, cells, proteins and other substances.
[0003] The existing spring clip connection method between the centrifuge rotor and the motor is prone to slippage between the spring clip and the motor shaft, which can lead to low centrifugal efficiency or even failure to complete centrifugation. In severe cases, it can cause damage to the equipment, damage and leakage of centrifuged samples, and cause personal injury.
[0004] In view of this, this application is hereby filed. Utility Model Content
[0005] The utility model aims to provide an anti-skid structure for a motor spring chuck, which solves the problem of slippage in the prior art when the motor drives the rotor to rotate by providing a motor ring with a slider, which cooperates with a keyway on the motor rotor and sets the slider between two adjacent spring sheets.
[0006] The utility model embodiment is realized by the following technical scheme: The utility model embodiment provides a motor spring clamp anti-slip structure, including a motor rotor, a centrifuge rotor assembly and a spring clamp, the spring clamp is sleeved on the motor rotor, the centrifuge rotor assembly is provided with a cover groove, the cover groove is sleeved on the spring clamp, when the motor rotor rotates, the spring clamp and the centrifuge rotor assembly can be driven to rotate;
[0007] The spring clip includes a plurality of spring pieces, which are combined into a sleeve chamber, each spring piece is fitted with the outer wall of the motor rotor, the motor rotor is a conical structure, and includes a first end and a second end, the radial dimension of the second end is larger than the radial dimension of the first end, the first end is axially extended to be provided with a screw hole, the spring clip is axially provided with a through hole, a bolt is provided in the through hole, the bolt can be inserted into the screw hole, and can move axially in the screw hole, when the bolt moves toward the second end, the distance between the free ends of a single spring piece becomes larger, and is squeezed with the inner wall of the cover groove;
[0008] Among them, a plurality of key slots are arranged on the motor rotor, a motor ring is sleeved on the motor rotor, a plurality of sliders are arranged on the motor ring, one end of a single slider is located in a single key slot, and the other end is located between two adjacent spring sheets.
[0009] Preferably, two key slots are provided, the two key slots are arranged opposite to each other, and two sliding blocks are provided.
[0010] Preferably, the keyway comprises an introduction end and a restriction end, the introduction end is arranged at one side of the first end, the restriction end is arranged at one side of the second end, and the notch depth of the introduction end is smaller than the notch depth of the restriction end.
[0011] Preferably, the width of the slot at the limiting end is adapted to the width of the slider.
[0012] Preferably, a waterproof platform is provided on the motor ring, and the waterproof platform extends radially outward along the motor ring.
[0013] Preferably, an operating hole is provided on the centrifuge rotor assembly, and the operating hole coincides with the axis of the bolt.
[0014] Preferably, a spring washer is provided between the bolt and the end wall of the screw hole.
[0015] Preferably, the radial dimension of the operating hole is greater than or equal to the radial dimension of the bolt.
[0016] Preferably, anti-slip grooves are provided on the inner side and the outer side of each of the plurality of spring sheets.
[0017] Preferably, the single slider protrudes outwardly from the outer side of the spring clip.
[0018] Compared with the prior art, the embodiments of the present invention have the following advantages and beneficial effects:
[0019] 1. The motor spring clamp anti-slip structure provided in the embodiment of the utility model can stably connect the motor rotor and the centrifuge rotor assembly, so that when the motor is running, the motor rotor can drive the centrifuge rotor assembly to rotate, thereby achieving the purpose of centrifugal separation, wherein the spring clamp is a component that indirectly connects the motor rotor and the centrifuge rotor assembly, and the spring clamp is sleeved on the motor rotor. Since the motor rotor is a conical structure, the spring clamp includes a plurality of spring pieces, so that during the axial movement of the spring clamp on the motor rotor, the conical structure can limit the deformation degree of each spring piece, and then In addition, the centrifuge rotor assembly is sleeved on the spring clip through the cover groove. When the free end of the spring clip moves to the large-size end of the conical structure, the distance between the free ends of the spring pieces will increase, and the radial size of the surrounded sleeve chamber will increase, so that the outer wall of the spring piece fits with the inner wall of the cover groove and generates pressure, thereby realizing the locking of the spring clip and the centrifuge rotor assembly. At the same time, a clamping force is also generated between the inner wall of the spring piece and the motor rotor, thereby realizing the locking of the spring clip and the motor rotor. In combination with the bolts that jointly connect the through hole and the screw hole, the spring clip realizes an indirect and stable connection between the motor rotor and the centrifuge rotor assembly.
[0020] In the embodiment of the utility model, it is important that a motor ring is provided on the motor rotor, and a plurality of sliders are provided on the motor ring, which cooperate with a plurality of key slots on the motor rotor. By utilizing the combined structure of a plurality of spring pieces of the spring clip, the slider realizes the limitation of the motor rotor and the spring clip at the same time, thereby improving the stability of the entire structure and preventing the slipping phenomenon in the process of the motor rotor driving the centrifuge rotor to rotate in the prior art.
[0021] 2. The keyway is set to a structure including an introduction end and a restriction end, and the groove depth at both ends is limited, so as to achieve a guiding effect on the slider and improve the stability of the fit between the slider and the keyway.
[0022] In general, the anti-slip structure of the motor spring clamp provided in the embodiment of the utility model is achieved by setting a motor ring with a slider, which cooperates with the keyway on the motor rotor, and sets the slider between two adjacent spring pieces to prevent the motor from slipping during the rotation of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 A cross-sectional installation diagram of the anti-slip structure of the motor spring chuck provided in an embodiment of the utility model;
[0025] Figure 2 A cross-sectional disassembly diagram of the anti-slip structure of the motor spring chuck provided in an embodiment of the utility model;
[0026] Figure 3 A disassembly diagram of a spring clip and a motor rotor provided in an embodiment of the utility model;
[0027] Figure 4 A schematic diagram of the motor ring structure provided by an embodiment of the utility model;
[0028] Figure 5 A diagram showing the installation structure of the spring clip and the motor rotor provided in the embodiment of the utility model;
[0029] Figure 6 This is a diagram of the installation structure of the centrifuge rotor assembly and the motor rotor provided in an embodiment of the utility model.
[0030] Marks and corresponding parts names in the attached drawings:
[0031] 1-motor rotor, 2-centrifuge rotor assembly, 3-spring clip, 4-cover slot, 5-spring sheet, 6-first end, 7-second end, 8-screw hole, 9-through hole, 10-bolt, 12-keyway, 13-motor ring, 14-slider, 15-introduction end, 16-limiting end, 17-waterproof platform, 18-operation hole, 19-spring gasket. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0035] In the description of the present invention, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0036] Example
[0037] like Figure 1-2 and Figure 6 As shown, the embodiment of the utility model provides a motor spring clamp anti-slip structure, including a motor rotor 1, a centrifuge rotor assembly 2 and a spring clamp 3. The motor rotor 1 is a component of the motor. When the motor is running, the electronic rotor can rotate, and the kinetic energy of the electronic rotor can be transferred to the centrifuge rotor assembly 2. The centrifuge rotor assembly 2 realizes the separation of the mixture during the rotation. Specifically, the spring clamp 3 is sleeved on the motor rotor 1, and a cover groove 4 is provided on the centrifuge rotor assembly 2. The cover groove 4 is sleeved on the spring clamp 3. When the motor rotor 1 rotates, the spring clamp 3 and the centrifuge rotor assembly 2 can be driven to rotate; that is, the spring clamp 3 serves as a carrier connecting the motor rotor 1 and the centrifuge rotor assembly 2, and the kinetic energy of the motor rotor 1 is transferred to the centrifuge rotor assembly 2, so as to realize the indirect connection between the motor rotor 1 and the centrifuge rotor assembly 2. The spring clip 3 includes a plurality of spring pieces 5, which are combined into a sleeve chamber. The sleeve chamber can be just mounted on the motor rotor 1. Each spring piece 5 fits against the outer wall of the motor rotor 1 to ensure the installation stability between the spring piece 5 and the motor rotor 1.
[0038] Specifically, the motor rotor 1 is a conical structure and includes a first end 6 and a second end 7. The radial dimension of the second end 7 is larger than the radial dimension of the first end 6, that is, a plurality of spring sheets 5 are assembled on the conical structure, and the first end 6 is axially extended with a screw hole 8, and the spring clip 3 is axially provided with a through hole 9, and a bolt 10 is provided in the through hole 9. The bolt 10 can be inserted into the screw hole 8 and can move axially in the screw hole 8. When the bolt 10 moves toward the second end 7, the distance between the free ends of the single spring sheet 5 becomes larger, and is squeezed with the inner wall of the cover groove 4; that is, the bolt 10 can connect the spring clip 3 to the motor rotor 1, and at the same time, when the bolt 10 moves in the screw hole 8 toward the second end 7, the spring clip 3 will also move toward the motor rotor 1. The second end 7 of the motor rotor 1 moves, that is, moves toward the larger radial end of the motor rotor 1. Since the spring clip 5 is always in contact with the motor rotor 1, when the spring clip 3 moves toward the second end 7, the free end of the spring clip 5 is deformed to adapt to the second end 7 with a larger radial size. The single spring clip 5 will expand outward, that is, the distance between the free ends becomes larger. The deformation of the spring clip 5 can not only increase the clamping force of the spring clip 3 on the motor rotor 1, but also fit with the cover groove 4 on the centrifuge rotor assembly 2 and generate pressure between the cover groove 4 wall, thereby achieving stable wedging between the spring clip 3 and the motor rotor 1 and the centrifuge rotor assembly 2, ensuring that the motor rotor 1 can drive the centrifuge rotor assembly 2 to rotate stably.
[0039] Among them, Figure 3-5 As shown, a plurality of key slots 11 are provided on the motor rotor 1, a motor ring 13 is sleeved on the motor rotor 1, and a plurality of sliders 14 are provided on the motor ring 13, one end of a single slider 14 is located in a single key slot 11, and the other end is located between two adjacent spring pieces 5. Specifically, the slider 14 on the motor ring 13 can cooperate with the key slot 11 and the spring clip 3 on the motor rotor 1 at the same time, and can limit the relative rotation between the motor rotor 1 and the motor ring 13, and the relative rotation between the motor ring 13 and the spring clip 3, thereby indirectly limiting the relative rotation between the spring clip 3 and the motor ring 13. This structure not only provides an anti-slip function, but also allows the user to adjust the clamping force as needed to adapt to centrifuge rotor assemblies 2 of different sizes and weights. In the entire structure, the connection mode of the spring clip 3 with the motor rotor 1 and the centrifuge rotor assembly 2 is a detachable connection mode, which is convenient for the maintenance and replacement of the spring clip 3 to ensure the reliability of long-term use. Preferably, the single slider 14 protrudes from the outside of the spring clip 3, and the protruding slider 14 can improve the limiting stability between the spring clip 3 and the spring clip 3.
[0040] It should be noted that the number of the spring pieces 5 is not limited here, as long as the purpose of sufficient elasticity can be achieved, it can be two, three, four, five, etc., and can be set according to the specific actual situation. Similarly, the number of the key slots 11 and the sliders 14 is not limited here, as long as the purpose of sufficient limit stability can be achieved. The setting between the slider 14 and the motor ring 13 can be an integral setting, or can be connected by welding, bonding, etc., as long as the purpose of sufficient connection stability can be achieved. As a preferred embodiment of the utility model, illustratively, there are two key slots 11, the two key slots 11 are relatively arranged, and the sliders 14 are provided with two. The two relatively arranged key slots 11 and the sliders 14 can more evenly distribute the connection force between the motor rotor 1 and the centrifuge rotor assembly 2, reduce the slip caused by the unbalanced moment, and by arranging a plurality of sliders 14 on the spring clip 3, the contact points with the motor ring 13 can be increased, thereby improving the stability of the entire system. Of course, in other embodiments, the key slots 11 and the sliders 14 can be respectively set to three, four, five, etc.
[0041] In order to improve the installation flexibility of the entire structure, the key slot 11 can be configured to include an introduction end 15 and a restriction end 16, the introduction end 15 is arranged on one side of the first end 6, the restriction end 16 is arranged on one side of the second end 7, and the notch depth of the introduction end 15 is less than the notch depth of the restriction end 16. Specifically, the notch depth of the introduction end 15 is less than that of the restriction end 16 so that the slider 14 of the motor ring 13 can slide into the introduction end 15 of the key slot 11 more easily during installation, and when the assembly moves to the restriction end 16, the deeper notch can provide a more stable limiting capability, because the deeper restriction end 16 can prevent the slider 14 from escaping from the key slot 11 under the action of centrifugal force, and the shallow groove of the introduction end 15 can serve as a guide to help correctly position the slider 14 and ensure that it does not deviate from the predetermined position during installation. When the motor ring 13 needs to be disassembled, the shallower notch of the introduction end 15 can reduce the force required for disassembly, making the disassembly process more convenient. Preferably, the slot width of the limiting end 16 is adapted to the width of the slider 14. The adapted slot width and slider 14 width can ensure that the slider 14 does not move laterally in the key slot 11, thereby achieving precise positioning, reducing vibration caused by the gap between the slider 14 and the key slot 11, and improving the running smoothness of the entire system.
[0042] Furthermore, a waterproof platform 17 is provided on the motor ring 13, and the waterproof platform 17 extends radially outward along the motor ring 13. This structure can provide additional protection for the bearing components in the motor, especially in a humid or watery environment, and can effectively prevent moisture from directly entering the bearings and other components of the motor, thereby reducing the erosion and damage of moisture to the internal components of the motor. The waterproof platform 17 extending outward can be designed into an easy-to-clean shape, such as an arc shape, so that accumulated water or dirt can be quickly removed during maintenance.
[0043] In order to facilitate the operation of the bolt 10, in the embodiment of the utility model, an operation hole 18 is provided on the centrifuge rotor assembly 2, and the operation hole 18 coincides with the axis of the bolt 10. This structure facilitates the operator to apply force to the bolt 10 through the operation hole 18, thereby limiting the axial movement of the bolt 10, so that the motor rotor 1 and the centrifuge rotor assembly 2 can be easily disassembled and installed. Preferably, the radial dimension of the operation hole 18 is greater than or equal to the radial dimension of the bolt 10. Of course, in order to reduce the wear of the motor ring 13, a spring washer 19 can be provided between the bolt 10 and the end wall of the screw hole 8, and the spring washer 19 can also prevent the bolt 10 from loosening and improve the stability of the entire anti-slip structure. Similarly, anti-slip patterns can also be provided on the inner and outer sides of each of the multiple spring sheets 5 to further improve the connection stability between the spring clip 3 and the motor rotor 1 and the centrifuge rotor assembly 2.
[0044] During installation, illustratively, the motor ring 13 is first installed on the motor rotor 1 to ensure that the single slider 14 is located in the single keyway 11, and then the spring clip 3 is mounted on the motor rotor 1 to ensure that the single slider 14 is located between two adjacent spring sheets 5, and a spring gasket 19 is placed on the end surface of the screw hole 8, and then the bolt 10 is passed through the through hole 9 and the screw hole 8 at the same time, and then the centrifuge rotor assembly 2 is arranged outside the spring clip 3, and force is applied to the bolt 10 through the operating hole 18 to move the bolt 10 toward the second end 7. During the movement, the spring clip 3 will also move toward the second end 7, and the bolt 10 can gradually lock the spring clip 3 with the motor rotor 1, and at the same time During the movement, since the electronic rotor is a conical structure, the free end of the spring clip 5 of the spring clip 3 will expand and squeeze the inner wall of the cover groove 4, thereby realizing the locking of the spring clip 3 and the centrifuge rotor assembly 2. At the same time, the deformed spring clip 5 will generate a clamping force on the motor rotor 1, thereby realizing further locking between the spring clip 3 and the motor. The spring clip 3 ensures that the motor rotor 1 can drive the centrifuge rotor assembly 2 to rotate. In the embodiment of the utility model, due to the presence of the motor ring 13, the slider 14 can limit the relative rotation between the spring clip 3 and the motor rotor 1, thereby avoiding the slipping phenomenon in the prior art and improving the stability of the entire structure.
[0045] In general, the motor ring 13 provided in the embodiment of the utility model plays a role in preventing liquid and other impurities from entering the motor bearing through the motor shaft in the combination relationship between the spring clip 3 and the motor rotor 1. More importantly, it can also prevent the spring clip 3 from slipping relative to the motor rotor 1 during high-speed rotation, and prevent the motor life from being shortened due to impurities entering the bearing. After the centrifuge rotor assembly 2 is sleeved on the spring clip 3 located on the motor rotor 1, the bolt 10 is tightened. Since the spring clip 5 of the spring clip 3 cooperates with the conical structure of the motor rotor 1, when pressed downward, the outer diameter of the spring clip 3 expands, and is tightly combined with the cover groove 4 to drive the centrifuge rotor assembly 2 to rotate at high speed.
[0046] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and the utility model omits the description of known components and processing technologies and processes to avoid unnecessary limitations on the utility model.
Claims
1. A motor spring clamp anti-slip structure, comprising a motor rotor (1), a centrifuge rotor assembly (2) and a spring clamp (3), wherein the spring clamp (3) is sleeved on the motor rotor (1), characterized in that: The centrifuge rotor assembly (2) is provided with a cover groove (4), and the cover groove (4) is sleeved on the spring clip (3). When the motor rotor (1) rotates, the spring clip (3) and the centrifuge rotor assembly (2) can be driven to rotate; The spring clip (3) comprises a plurality of spring sheets (5), the plurality of spring sheets (5) are combined into a sleeve chamber, each of the spring sheets (5) is in contact with the outer wall of the motor rotor (1), the motor rotor (1) is a conical structure, and comprises a first end (6) and a second end (7), the radial dimension of the second end (7) is larger than the radial dimension of the first end (6), the first end (6) is axially extended with a screw hole (8), the spring clip (3) is axially provided with a through hole (9), a bolt (10) is provided in the through hole (9), the bolt (10) can be inserted into the screw hole (8) and can move axially in the screw hole (8), when the bolt (10) moves toward the second end (7), the distance between the free ends of the single spring sheet (5) increases, and the free ends are squeezed with the inner wall of the cover groove (4); The motor rotor (1) is provided with a plurality of key slots (12), the motor rotor (1) is sleeved with a motor ring (13), the motor ring (13) is provided with a plurality of sliders (14), one end of each of the sliders (14) is located in a single key slot (12), and the other end is located between two adjacent spring sheets (5).
2. The anti-slip structure of a motor spring chuck according to claim 1, characterized in that: Two key grooves (12) are provided, and the two key grooves (12) are arranged opposite to each other. Two sliding blocks (14) are provided.
3. The anti-slip structure of a motor spring chuck according to claim 2, characterized in that: The keyway (12) comprises an introduction end (15) and a restriction end (16), wherein the introduction end (15) is arranged on one side of the first end (6), and the restriction end (16) is arranged on one side of the second end (7), and the groove depth of the introduction end (15) is smaller than the groove depth of the restriction end (16).
4. The anti-slip structure of a motor spring chuck according to claim 3, characterized in that: The width of the slot of the limiting end (16) is adapted to the width of the slider (14).
5. The anti-slip structure of a motor spring chuck according to claim 1, characterized in that: A waterproof platform (17) is provided on the motor ring (13), and the waterproof platform (17) extends radially outwards along the motor ring (13).
6. The anti-slip structure of a motor spring chuck according to claim 1, characterized in that: The centrifuge rotor assembly (2) is provided with an operating hole (18), and the operating hole (18) coincides with the axis of the bolt (10).
7. The anti-slip structure of a motor spring chuck according to claim 6, characterized in that: A spring washer (19) is provided between the bolt (10) and the end wall of the screw hole (8).
8. The anti-slip structure of a motor spring chuck according to claim 6, characterized in that: The radial dimension of the operating hole (18) is greater than or equal to the radial dimension of the bolt (10).
9. The anti-slip structure of a motor spring chuck according to claim 1, characterized in that: The inner side and the outer side of each of the plurality of spring sheets (5) are provided with anti-slip grooves.
10. The anti-slip structure of a motor spring chuck according to claim 1, characterized in that: The single slider (14) protrudes outward from the outer side of the spring clip (3).