A structure for electromagnetic locking movement under linear motion and a multi-joint isokinetic training device

Abstract

This utility model discloses a structure for electromagnetic locking motion in linear motion and a multi-joint isokinetic training device. The electromagnetic locking motion structure includes a linear module, an electromagnet, and an electromagnetic adsorption block. The linear module includes a linear module base, a slide rail slider module, and a moving platform. The slide rail slider module is mounted on the linear module base and includes a slide rail and a slider slidably mounted on the slide rail. The moving platform is mounted on the slider. The electromagnetic adsorption block is mounted on the linear module base and located below the moving platform. The electromagnet is located at the bottom of the moving platform, and a gap is left between the adsorption surfaces of the electromagnetic adsorption block and the electromagnet. When the electromagnet is magnetic, the electromagnetic adsorption block is attracted by the electromagnet to lock the moving platform. This utility model utilizes the characteristics of electromagnets, and compared with mechanical locking mechanisms, avoids the problems of complex structures, short service life, and high costs, easily and conveniently achieving locking.

Description

Technical Field

[0001] This utility model relates to the field of locking linear motion, specifically to a structure for electromagnetic locking motion in linear motion and a multi-joint isokinetic training device. Background Technology

[0002] Currently, most locking mechanisms are based on mechanical structures, such as those using friction for locking. However, this type of friction locking not only has low torque and unstable locking, leading to slippage, but also causes the friction material to wear out easily with frequent use, resulting in a short service life. Another method uses steel balls or pins inserted into pre-drilled holes in the shaft for locking and positioning, but this is a stepped positioning method, not stepless. Yet another method uses hydraulic mechanics for positioning, primarily employing hydraulic components such as connecting rods and pistons. These devices can achieve stepless positioning, but due to their high manufacturing precision and complex mechanisms, they are not only expensive but also have high maintenance costs. Inside linear modules, due to the limited internal installation space, using mechanical structures to lock movement is extremely cumbersome and costly.

[0003] For example, Chinese utility model patent CN 216895611U discloses a linear motion module with an embedded slide block, including a module profile, an internal lead screw, a lead screw nut, and slide block end caps fixed to both ends of the lead screw nut; a slide block mechanism, including a slide block cover fixed to the lead screw nut, the top of the lead screw nut forming an arched curved surface; and a magnetic attraction mechanism, with a magnetic strip fixed to the top of the module profile, a permanent magnet on the top of the slide block end cap, and the magnetic strip and permanent magnet magnetically attracting a metal strip, the two ends of the metal strip being fixed to the module profile, the permanent magnet contacting the lower surface of the metal strip, and the magnetic strip contacting the two side edges of the lower surface of the metal strip; the metal strip passes between the arched curved surface and the slide block cover, and the length of the metal strip in the straightened state is greater than the length of a single magnetic strip. This technical solution uses a lead screw and nut for mechanical locking. Although a magnetic attraction mechanism is provided as a supplement, it does not fully utilize the magnetic attraction function, and is also expensive and complex. Utility Model Content

[0004] To address at least one of the problems existing in the prior art, this utility model provides an electromagnetic locking mechanism for linear motion. It utilizes the properties of electromagnets to lock the moving platform. Compared with traditional mechanical locking mechanisms, the electromagnetic locking mechanism for linear motion provided by this utility model avoids the problems of complex structure, short service life, and high cost, and can easily, conveniently and simply achieve locking.

[0005] To achieve the purpose of this utility model, this utility model provides a structure for electromagnetic locking motion under linear motion, including a linear module, an electromagnet and an electromagnetic adsorption block;

[0006] The linear module includes a linear module base, a slide rail and slider module, and a moving platform; the slide rail and slider module is disposed on the linear module base, and the slide rail and slider module includes a slide rail and a slider slidably disposed on the slide rail; the moving platform is disposed on the slider;

[0007] The electromagnetic adsorption block is installed on the base of the linear module and located below the moving platform. The electromagnet is located at the bottom of the moving platform, and a gap is left between the electromagnetic adsorption block and the adsorption surface of the electromagnet. When the electromagnet is magnetic, the electromagnetic adsorption block is attracted by the electromagnet to lock the moving platform.

[0008] After installation, the electromagnetic adsorption block has vertical freedom perpendicular to the base of the linear module. When the electromagnet is magnetic, the electromagnetic adsorption block is attracted upward by the magnetic force of the electromagnet, and the moving platform is locked. When the electromagnet is demagnetized, the electromagnetic adsorption block automatically moves downward under its own gravity, maintaining a gap between the electromagnet and the electromagnetic adsorption block, and the moving platform can move.

[0009] As a preferred technical solution, the electromagnet is a de-energized electromagnet, meaning that the electromagnet retains its magnetism when the power is off and loses its magnetism when the power is on. By controlling the energization of the electromagnet, the linear motion control of the moving platform can be achieved.

[0010] As a preferred technical solution, the material of the electromagnetic adsorption block is stainless steel or a material with good magnetic permeability.

[0011] As a preferred technical solution, the material with good magnetic permeability is any one of stainless iron, ferrite, and silicon steel.

[0012] As a preferred technical solution, the thickness of the electromagnetic adsorption block is more than 8mm to ensure sufficient magnetism.

[0013] As a preferred technical solution, there are multiple electromagnetic adsorption blocks, and the multiple electromagnetic adsorption blocks are laid out to cover the entire linear module base according to the length of the locking movement.

[0014] As a preferred technical solution, the attraction contact area of ​​each electromagnetic adsorption block is greater than or equal to the attraction surface of the electromagnet.

[0015] As a preferred technical solution, the size of the gap between the electromagnetic adsorption block and the adsorption surface of the electromagnet is between 0.2 and 0.4 mm.

[0016] This utility model also provides a multi-joint isokinetic training device, including the aforementioned structure for electromagnetic locking motion under linear motion, wherein the power head module in the isokinetic training device is connected to the moving platform in the aforementioned structure for electromagnetic locking motion under linear motion.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] (1) The present invention provides a structure for electromagnetic locking motion under linear motion. When the electromagnet is magnetic, it is firmly attracted to the electromagnetic adsorption block and remains stationary, and the moving platform is thus locked and stationary. When the electromagnet is demagnetized, the electromagnet will separate from the electromagnetic adsorption block, so that the moving platform can move freely.

[0019] (2) The present invention provides a structure for electromagnetic locking motion under linear motion. By utilizing the characteristics of electromagnets for locking, compared with mechanical locking mechanisms, it avoids the problems of complex structure, short service life and high cost, and can easily and conveniently achieve locking. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the 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 some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0021] Figure 1 An overall structural diagram of a structure for electromagnetic locking motion under linear motion is provided for an embodiment of this utility model;

[0022] Figure 2 This is a schematic diagram showing the cooperation between the linear module and the electromagnetic adsorption block in an embodiment of this utility model.

[0023] Figure 3 This is a schematic diagram showing the cooperation between the mobile platform and the electromagnet in an embodiment of this utility model.

[0024] In the diagram: 1-Linear module, 1-1 Linear module base, 1-2 Slide rail slider module, 1-3 Moving platform; 2-Electromagnetic adsorption block; 3-Electromagnet. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product of this utility model is in use. These are merely for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Example 1

[0028] Please see Figures 1-2 The present invention provides a structure for electromagnetic locking motion under linear motion, comprising a linear module 1, an electromagnet 3, and an electromagnetic adsorption block 2.

[0029] The linear module 1 includes a linear module base 1-1, a slide rail and slider module 1-2, and a moving platform 1-3. The slide rail and slider module 1-2 includes a slide rail and a slider. The slide rail is located on both sides of the linear module base 1-1, and the slider is slidably mounted on the slide rail. The moving platform 1-3 is fixedly mounted on the slider. An electromagnetic adsorption block 2 is installed on the linear module base 1-1 and located below the moving platform 1-3. The electromagnetic adsorption block 2 and the linear module base 1-1 are flexibly connected, secured by fasteners while providing vertical guidance. An electromagnet 3 is installed at the bottom of the moving platform 1-3, with a gap between the adsorption surfaces of the electromagnetic adsorption block 2 and the electromagnet 3. When the electromagnet 3 is magnetic, the electromagnetic adsorption block 2 is attracted by the electromagnet 3 to lock the moving platform 1-3. By controlling the energization of the electromagnet 3, the linear movement of the moving platform 1-3 is controlled.

[0030] In this embodiment, the electromagnet 3 is a de-energized electromagnet, meaning that the electromagnet 3 retains its magnetism when the power is off and loses its magnetism when the power is on. Due to the characteristics of the de-energized electromagnet, it can maintain a locked state on the mobile platform 1-3 for a long time. No electrical energy is consumed during the adsorption process, and there is no safety hazard caused by the sudden release of the attracted object due to a sudden power outage or power supply problem.

[0031] The electromagnetic adsorption block 2, mounted on the linear module base 1-1, has vertical freedom perpendicular to the linear module base 1-1. When the electromagnet 3 is energized, the electromagnetic adsorption block 2 automatically moves downwards under its own gravity. The gap between the electromagnet 3 and the electromagnetic adsorption block 2 allows the mobile platform 1-3 to move easily without interference. When the electromagnet 3 is de-energized, the electromagnetic adsorption block 2 is attracted upwards by the magnetic force of the electromagnet 3, thereby locking the mobile platform 1-3.

[0032] Example 2

[0033] Please see Figures 1-2 This embodiment provides a structure for electromagnetic locking motion in linear motion, including a linear module 1, an electromagnet 3, and an electromagnetic adsorption block 2.

[0034] The linear module 1 includes a linear module base 1-1, a slide rail slider module 1-2, and a moving platform 1-3; the slide rail slider module is disposed on the linear module base 1-1, the slide rail slider module 1-2 includes a slide rail and a slider slidably disposed on the slide rail; the moving platform 1-3 is disposed on the slider.

[0035] The electromagnetic adsorption block 2 is installed on the linear module base 1-1 and located below the moving platform 1-3. The electromagnet 2 is fixedly installed at the bottom of the moving platform 1-3, and a gap is left between the electromagnetic adsorption block 2 and the adsorption surface of the electromagnet 3. When the electromagnet 3 is magnetic, the electromagnetic adsorption block 2 is attracted by the electromagnet 3 to lock the moving platform 1-3.

[0036] In this embodiment, the material of the electromagnetic adsorption block 2 is stainless steel or a material with good magnetic permeability. Furthermore, the material with good magnetic permeability can be any of the following materials: stainless iron, ferrite, silicon steel, etc.

[0037] In this embodiment, the thickness of the electromagnetic adsorption block 2 is more than 8mm to ensure sufficient magnetism.

[0038] In this embodiment, the gap between the electromagnetic adsorption block 2 and the adsorption surface of the electromagnet 3 is between 0.2 and 0.4 mm.

[0039] Example 3

[0040] Please see Figures 1-2 This embodiment provides a structure for electromagnetic locking motion in linear motion, including a linear module 1, an electromagnet 3, and an electromagnetic adsorption block 2.

[0041] The linear module 1 includes a linear module base 1-1, a slide rail slider module 1-2, and a moving platform 1-3; the slide rail slider module is disposed on the linear module base 1-1, the slide rail slider module 1-2 includes a slide rail and a slider slidably disposed on the slide rail; the moving platform 1-3 is disposed on the slider.

[0042] The electromagnetic adsorption block is installed on the linear module base 1-1 and located below the moving platform 1-3. The electromagnet 2 is located at the bottom of the moving platform 1-3, and a gap is left between the electromagnetic adsorption block 2 and the adsorption surface of the electromagnet 3. When the electromagnet 3 is magnetic, the electromagnetic adsorption block 2 is attracted by the electromagnet 3 to lock the moving platform 1-3.

[0043] In this embodiment, the surface of the electromagnetic adsorption block 2 is flat and clean.

[0044] In this embodiment, there are multiple electromagnetic adsorption blocks 2. The multiple electromagnetic adsorption blocks 2 are laid out to cover the entire linear module base 1-1 according to the length of the locking movement. The adsorption contact area of ​​each electromagnetic adsorption block 2 is greater than or equal to the adsorption surface of the electromagnet 3. This can maintain sufficient electromagnetic adsorption force between the electromagnet 3 and the electromagnetic adsorption block 2.

[0045] Each of the electromagnetic adsorption blocks 2 has four screw holes around its perimeter. The electromagnetic adsorption block 2 is connected to the linear module base 1-1 via these screw holes. This connection is flexible, with the screw holes engaging with screws. The screws serve as vertical guides for the electromagnetic adsorption block 2, allowing it to float up and down. When subjected to electromagnetic attraction, the electromagnetic adsorption block 2 is tightly attracted to the electromagnet 3. When the electromagnetic attraction is lost, the electromagnetic adsorption block 2 naturally descends under the influence of gravity.

[0046] The aforementioned embodiments of this utility model provide a structure for electromagnetic locking motion in linear motion. The electromagnet 3 can be a de-energized electromagnet. When the electromagnet 3 is de-energized, it retains its magnetism and is firmly attracted to the electromagnetic adsorption block 2, thus keeping the moving platform 1-3 locked in place. When the moving platform 1-3 needs to move, the electromagnet 3 is energized, causing it to lose its magnetism and separate from the electromagnetic adsorption block 2, allowing the moving platform 1-3 to move freely. By utilizing the characteristics of the electromagnet 3 to lock the moving platform 1-3, compared to traditional mechanical locking mechanisms, this avoids the problems of complex structure, short service life, and high cost, and can easily and conveniently achieve locking.

[0047] Example 4

[0048] This embodiment combines Figures 1-3 This invention describes the specific application of an electromagnetic locking motion structure for linear motion in the field of multi-joint isokinetic training devices. This invention's electromagnetic locking motion structure for linear motion can be applied to other technical fields and is not limited to this one method. This embodiment specifically illustrates its use in multi-joint isokinetic training devices.

[0049] The range of motion of the joints in the multi-joint isokinetic training device needs to be adjusted according to the patient's joint rehabilitation movement to meet the needs of different patients. The adjustment of the range of motion must be convenient, quick, safe, and reliable.

[0050] The power head module in the constant velocity training device is connected to the moving platform 1-3 in the structure for electromagnetic locking motion under linear motion provided in Examples 1-3.

[0051] In the power-off state, the mobile platform 1-3 is locked and cannot move, and the power head module in the multi-joint isokinetic training device also remains stationary. In the power-on state, the electromagnet 3 in the electromagnetic locking motion structure used for linear motion loses its magnetism, and the mobile platform 1-3 can move freely due to the separation of the electromagnet 3 from the electromagnetic adsorption block 2. The power head module can therefore move freely according to the training state. After the power is turned off again, it remains stationary.

[0052] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0053] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A structure for electromagnetic locking motion in linear motion, characterized in that, Includes linear module, electromagnet and electromagnetic adsorption block; The linear module includes a linear module base, a slide rail and slider module, and a moving platform; the slide rail and slider module is disposed on the linear module base and includes a slide rail and a slider slidably disposed on the slide rail; the moving platform is disposed on the slider. The electromagnetic adsorption block is installed on the base of the linear module and located below the moving platform. The electromagnet is located at the bottom of the moving platform, and a gap is left between the electromagnetic adsorption block and the adsorption surface of the electromagnet. When the electromagnet is magnetic, the electromagnetic adsorption block is attracted by the electromagnet to lock the moving platform.

2. The structure for electromagnetic locking motion in linear motion according to claim 1, characterized in that, The electromagnet is a de-energized electromagnet, and the linear motion control of the moving platform is achieved by controlling the energization of the electromagnet.

3. The structure for electromagnetic locking motion in linear motion according to claim 1, characterized in that, The material of the electromagnetic adsorption block is any one of stainless iron, ferrite, or silicon steel.

4. The structure for electromagnetic locking motion in linear motion according to claim 1, characterized in that, The thickness of the electromagnetic adsorption block is 8mm or more.

5. The structure for electromagnetic locking motion in linear motion according to claim 1, characterized in that, The electromagnetic adsorption blocks are multiple in number, and the multiple electromagnetic adsorption blocks are laid out to cover the entire linear module base according to the length of the locking movement.

6. The structure for electromagnetic locking motion in linear motion according to claim 4, characterized in that, The contact area of ​​each electromagnetic adsorption block is greater than or equal to the contact surface of the electromagnet.

7. The structure for electromagnetic locking motion in linear motion according to claim 1, characterized in that, The gap between the electromagnetic adsorption block and the adsorption surface of the electromagnet is between 0.2 and 0.4 mm.

8. A structure for electromagnetic locking motion in linear motion according to any one of claims 1-7, characterized in that, After installation, the electromagnetic adsorption block has vertical freedom perpendicular to the base of the linear module. When the electromagnet is magnetic, the electromagnetic adsorption block is attracted upward by the magnetic force of the electromagnet. When the electromagnet is demagnetized, the electromagnetic adsorption block automatically moves downward under its own gravity.

9. A multi-joint isokinetic training device, characterized in that, The structure includes the electromagnetic locking motion as described in any one of claims 1-8, wherein the power head module in the constant velocity training device is connected to the mobile platform.

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