Permanent magnet magnetic base adsorption switching device

Abstract

The utility model discloses a kind of permanent magnet magnetic pedestal adsorption switching devices, comprising: lever, limit shaft sleeve, rotary shaft and magnetic pedestal;The limit shaft sleeve is equipped with the long slot hole cooperation with the lever, and the long slot hole one side is equipped with limit slot in limit shaft sleeve outer wall;Lever is equipped with the lever sleeve cooperation with the limit slot, and the lever sleeve is connected with lever axial sliding, and spring is equipped between lever sleeve and lever, and spring is directed to the spring of limit shaft sleeve and is pushed to limit shaft sleeve;Limit shaft sleeve is fixedly connected with the magnetic pedestal, and the rotary shaft is located in limit shaft sleeve and magnetic pedestal, and lever is fixedly connected with the rotary shaft in limit shaft sleeve, and the rotary shaft in magnetic pedestal is equipped with N pole magnetic steel and S pole magnetic steel when lever sleeve is located in limit slot, and along the attractive force of magnetic pedestal installation direction is generated.This utility model discloses a kind of permanent magnet magnetic pedestal adsorption switching devices, and it is labor-saving and convenient to operate, and state locking is reliable.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet base technology, and in particular to a permanent magnet base adsorption switching device. Background Technology

[0002] Permanent magnet bases are widely used for workpiece or plate positioning and clamping in industrial fields such as machining, welding, and assembly due to their advantages of requiring no external power source, strong attraction, and safety and reliability. However, traditional permanent magnet bases generally suffer from inconvenient switching operations between adsorption states. Common technical solutions involve using leverage to forcibly overcome magnetic force to separate the base from the workpiece or plate, or moving the entire base to achieve adsorption and release. These operations often require a great deal of force, especially when adsorbing large workpieces or plates or when the magnetic base has a strong attraction, making the operation very strenuous and resulting in a poor user experience. In addition, frequent and forceful operations can accelerate wear and tear on the mechanism, affecting the lifespan of the base.

[0003] To improve the ease of switching operations, some improved solutions propose switching the magnetic field path by changing the relative position or orientation of the permanent magnet components inside the magnetic base, thereby achieving the transition between adsorption and release states and avoiding directly overcoming all the attraction force. However, these solutions lack reliable state locking. After switching to the adsorption state, the lack of an effective self-locking or anti-loosening mechanism makes it easy for the magnet components to shift position during equipment vibration or accidental collisions, causing the magnetic base to accidentally detach from the workpiece or iron plate, posing a serious safety hazard. Therefore, there is an urgent need for a permanent magnet magnetic base adsorption state switching device that is labor-saving, convenient to operate, and has reliable state locking. Utility Model Content

[0004] To address the problems of cumbersome operation and lack of reliable locking mechanism when switching between adsorption and release states in traditional permanent magnet bases, this invention proposes a permanent magnet base adsorption switching device.

[0005] The specific technical solution is as follows:

[0006] A permanent magnet magnetic base adsorption switching device includes: a lever, a limiting bushing, a rotating shaft, and a magnetic base;

[0007] The limiting bushing is provided with a long slot hole that mates with the lever, and a limiting groove is provided on the outer wall of the limiting bushing on one side of the long slot hole.

[0008] The lever is provided with a lever sleeve that mates with the limiting groove. The lever sleeve is axially slidably connected to the lever. A spring is provided between the lever sleeve and the lever to push the lever sleeve against the limiting bushing.

[0009] The limiting bushing is fixedly connected to the magnetic base. The rotating shaft is located inside the limiting bushing and the magnetic base. The lever is fixedly connected to the rotating shaft inside the limiting bushing. The rotating shaft inside the magnetic base is equipped with N-pole magnets and S-pole magnets that generate attraction along the magnetic base mounting direction when the lever sleeve is located in the limiting groove. The rotating shaft is controlled to rotate within the magnetic base by the lever. When the lever is moved to the limiting groove position, the lever sleeve is pushed into the limiting groove from the outer wall of the limiting bushing under the action of the spring, forming a device lock. At this time, the magnetic field generated by the N-pole magnets and S-pole magnets is in the magnetic base mounting direction, causing the workpiece or iron plate installed at the magnetic base mounting position to be attracted to the magnetic base. When it is necessary to release the attraction state, the lever sleeve is lifted along the compression spring direction to release the lock, and the lever is moved to the other side of the long slot hole. At this time, the magnetic field direction changes, and the attraction state can be released.

[0010] Furthermore, a limiting part is provided on the other side of the side where the lever is fixedly connected to the rotary shaft, one side of the spring abuts against the limiting part, and the other side of the spring abuts against the inner wall of the lever sleeve.

[0011] Furthermore, the inner side of the lever sleeve is provided with a spring groove, and the spring is disposed in the spring groove. The other side of the spring abuts against the bottom wall of the spring groove. The outer wall of the lever sleeve on the top side of the spring groove is provided with a protruding ring. The protruding ring makes it convenient for the operator to lift the lever sleeve.

[0012] Furthermore, a ball head is provided at the other end of the lever that is fixedly connected to the rotary shaft. The ball head can serve as a grip, making it convenient for the operator to move the lever.

[0013] Furthermore, the magnetic base includes a front cover, a housing, and a rear cover. The front cover is provided with a first bearing, and the front cover is fixedly connected to one end of the housing. The other end of the housing is provided with a second bearing. The rotating shaft is sleeved in the first and second bearings. The rear cover is fixedly connected to the other end of the housing.

[0014] Furthermore, the limiting bushing is fixedly connected to the magnetic base rear cover.

[0015] Furthermore, the limiting bushing is a frustum-shaped structure with a larger base surface than the fixing surface of the magnetic base's rear cover, and the elongated slot is located on the curved wall of the limiting bushing. This allows the lever to point outward at a certain angle, facilitating the operator's movement of the lever while reducing the possibility of the lever affecting the workpiece or iron plate adsorbed on the magnetic base during movement.

[0016] Furthermore, the side of the rotary shaft that is fixedly connected to the lever is provided with a ramp shaped like the inner wall of the curved surface of the limiting bushing. This allows the rotary rod to rotate normally when driven by the lever.

[0017] Furthermore, the limiting bushing is fixedly connected to the magnetic base rear cover by a first screw, and the magnetic base rear cover is fixedly connected to the magnetic base outer shell by a second screw.

[0018] Furthermore, the N-pole magnet and the S-pole magnet are fixedly connected to the rotating shaft by a third screw.

[0019] The above technical solution has the following advantages or technical effects:

[0020] 1. This utility model enables adsorption / release switching and reliable self-locking. Through the spring locking mechanism between the lever sleeve and the limiting groove, the state switching achieves "locking upon reaching the position": Adsorption state: When the lever is moved to the limiting groove position, the lever sleeve automatically engages with the limiting groove under spring force, completing the locking without additional operation; Release state: Simply pull the lever sleeve (overcoming the spring force) with one hand and move the lever to release the lock and switch the magnetic field direction. The operation is simplified to "one pull and one push," avoiding the forceful manipulation required in traditional solutions; the spring preload ensures no accidental unlocking under vibration conditions, improving safety.

[0021] 2. The convex ring design of this utility model provides a clear point of force application, making it easy to unlock with one finger; the ball end increases the contact area to prevent hand slippage and conforms to grip habits; the truncated cone surface of the limiting bushing makes the lever naturally tilt outward, avoiding interference areas with workpieces or iron plates during operation, thereby reducing operator fatigue, especially suitable for narrow spaces or scenarios where gloves are worn.

[0022] 3. This utility model can precisely control the orientation of the magnetic field. The rotation angle of the magnetic field can be precisely controlled by the lever. In the locked state, the magnetic field is completely concentrated in the installation direction of the magnetic base to achieve the maximum adsorption force. In the released state, the orientation of the magnetic field is switched to the non-working surface, and the bottom adsorption force is completely reduced to zero. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a perspective view of the internal structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the limiting bushing of this utility model;

[0026] Figure 4 This is a schematic diagram of the unadsorbed state of this utility model;

[0027] Figure 5 This is a schematic diagram of the adsorption state of this utility model.

[0028] In the attached diagram, the following symbols are used: 1- lever, 1.1-limiting part, 1.2-ball head, 2-limiting bushing, 2.1-long slot, 2.2-limiting groove, 3-rotating shaft, 4-magnetic base, 4.1-magnetic base front cover, 4.2-magnetic base outer shell, 4.3-magnetic base rear cover, 5-lever sleeve, 5.1-spring groove, 5.2-convex ring, 6-spring, 7-N pole magnet, 8-S pole magnet, 9-first bearing, 10-second bearing, 11-first screw, 12-second screw, 13-third screw. Detailed Implementation

[0029] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 , Figure 2 As shown, a permanent magnet magnetic base adsorption switching device includes: a lever 1, a limiting bushing 2, a rotating shaft 3, and a magnetic base 4;

[0031] like Figure 3 As shown, the limiting bushing 2 is provided with a long slot 2.1 that mates with the lever 1. The width of the long slot 2.1 is similar to the diameter of the lever 1, allowing the lever 1 to slide freely within the long slot 2.1. On one side of the long slot 2.1, a limiting groove 2.2 is provided on the outer wall of the limiting bushing 2. The projection size of the limiting groove 2.2 in the direction of the lever 1 is larger than the cross-sectional size of the lever 1.

[0032] The lever 1 is provided with a lever sleeve 5 that mates with the limiting groove 2.2. The size and shape of the outer wall of the lever sleeve 5 are the same as those of the limiting groove 2.2. The limiting groove 2.2 and the outer wall of the lever sleeve 5 are preferably circular, so that when the lever sleeve 5 is at any angle, it can accurately fall into the limiting groove 2.2 to achieve locking when the lever 1 is moved to the locking side of the long slot hole, that is, the side of the limiting groove 2.2. The lever sleeve 5 is sleeved on the lever 1, and the lever sleeve 5 and the lever 1 are axially slidably connected. A spring 6 is provided between the lever sleeve 5 and the lever 1 to push the lever sleeve 5 towards the limiting bushing 2.

[0033] The limiting bushing 2 is fixedly connected to the magnetic base 4. The rotating shaft 3 is located inside the limiting bushing 2 and the magnetic base 4. The lever 1 is fixedly connected to the rotating shaft 3 inside the limiting bushing 2. The rotating shaft 3 inside the magnetic base 4 is equipped with an N-pole magnet 7 and an S-pole magnet 8 that generate attraction along the installation direction of the magnetic base 4 when the lever sleeve 5 is located inside the limiting groove 2.2.

[0034] The specific length range of the long slot 2.1 can be set from the direction of maximum attraction of the N-pole magnet 7 and the S-pole magnet 8 when rotated in the mounting direction of the magnet base 4 to the direction of no attraction. The specific length range depends on the mounting direction of the magnet base 4 and the mounting positions of the N-pole magnet 7 and the S-pole magnet 8. The mounting direction of the magnet base 4 refers to the direction in which the magnet base 4 mounts the workpiece or iron plate, and is determined by the actual usage and the shape of the magnet base 4. It is preferably the direction in which the magnet base 4 faces upwards. Multiple sets of N-pole magnets 7 and S-pole magnets 8 can be used. As a specific implementation of this embodiment, such as... Figure 4 , Figure 5 As shown, N-pole magnets 7 and S-pole magnets 8 are symmetrically arranged. All N-pole magnets 7 are fixed on one side of the rotating shaft 3, and all S-pole magnets 8 are fixed on the other side of the rotating shaft 3 opposite to the N-pole magnets 7. The gaps between the N-pole magnets 7 and S-pole magnets 8 allow the magnetic field to be formed on the radial outer circle of the magnets. When the rotating shaft 3 rotates 90°, the maximum attraction force generated in the mounting direction of the magnetic base 4 changes to no attraction force in the mounting direction of the magnetic base 4.

[0035] On the other side of the fixed connection between lever 1 and rotary shaft 3, there is a limiting part 1.1. One side of spring 6 abuts against the limiting part 1.1, and the other side of spring 6 abuts against the inner wall of lever sleeve 5.

[0036] The inner side of the lever sleeve 5 is provided with a spring groove 5.1, and the spring 6 is located in the spring groove 5.1. The other side of the spring 6 abuts against the bottom wall of the spring groove 5.1. The outer wall of the lever sleeve 5 on the top side of the spring groove 5.1 is provided with a protruding ring 5.2.

[0037] A ball head 1.2 is provided on the other end of the side where the lever 1 is fixedly connected to the rotary shaft 3.

[0038] Rotating lever 1 via ball joint 1.2 drives the rotary shaft 3 and the N-pole magnet 7 and S-pole magnet 8 mounted on it to rotate. When lever 1 rotates along the long slot 2.1 of the limiting sleeve 2 to the locking side, lever sleeve 5 automatically pushes into the limiting groove 2.2 on the limiting sleeve 2 under the action of spring 6 to achieve locking. At this time, the magnetic field generates an attractive force in the same direction as the installation direction of the magnetic seat 4, realizing the adsorption of the magnetic seat 4. When the adsorption of the magnetic seat 4 is to be canceled, the convex ring 5.2 is pulled upward to drive lever sleeve 5 to compress spring 6, so that lever sleeve 5 disengages from the limiting groove 2.2, and lever 1 is rotated to the other side. At this time, the rotary shaft 3 synchronously drives the magnetic field generated by the N-pole magnet 7 and S-pole magnet 8 to rotate, and there is no attractive force in the installation direction of the magnetic seat 4, thus canceling the adsorption of the magnetic seat 4.

[0039] The magnetic base 4 includes a front cover 4.1, a housing 4.2, and a rear cover 4.3. A first bearing 9 is housed inside the front cover 4.1. The front cover 4.1 is fixedly connected to one end of the housing 4.2, and a second bearing 10 is housed at the other end of the housing 4.2. A rotating shaft 3 is fitted inside the first bearing 9 and the second bearing 10. The rear cover 4.3 is fixedly connected to the other end of the housing 4.2. A limiting sleeve 2 is fixedly connected to the rear cover 4.3. The limiting sleeve 2 is a frustum-shaped structure with a larger base than the fixing surface of the rear cover 4.3. A long slot 2.1 is located on the curved wall of the limiting sleeve 2. The rotating shaft 3 has a ramp on the side fixedly connected to the lever 1, which matches the shape of the inner curved wall of the limiting sleeve 2. A gap exists between the magnetic base housing 4.2 and the N-pole magnet 7 and S-pole magnet 8. The magnetic base housing 4.2 is made of ferromagnetic material. When the magnets approach, they magnetize the housing, causing it to also become magnetic. This magnetism induces attraction between the opposite magnetic poles, creating an attractive force that draws the magnetic material to the workpiece or iron plate, thus achieving adsorption.

[0040] The limiting bushing 2 is fixedly connected to the magnetic base rear cover 4.3 by the first screw 11, and the magnetic base rear cover 4.3 is fixedly connected to the magnetic base outer shell 4.2 by the second screw 12. The lever 1 is fixedly connected to the rotating shaft 3 by threads.

[0041] The N-pole magnet 7 and the S-pole magnet 8 are fixedly connected to the rotating shaft 3 by the third screw 13. The magnets can be made of neodymium iron boron material.

[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A permanent magnet base adsorption switching device, characterized in that, include: Lever (1), limit sleeve (2), rotary shaft (3) and magnetic base (4); The limiting bushing (2) is provided with a long slot (2.1) that cooperates with the lever (1), and a limiting groove (2.2) is provided on the outer wall of the limiting bushing (2) on one side of the long slot (2.1). The lever (1) is provided with a lever sleeve (5) that cooperates with the limiting groove (2.2). The lever sleeve (5) is axially slidably connected to the lever (1). A spring (6) is provided between the lever sleeve (5) and the lever (1) to push the lever sleeve (5) against the limiting bushing (2). The limiting bushing (2) is fixedly connected to the magnetic base (4). The rotating shaft (3) is located inside the limiting bushing (2) and the magnetic base (4). The lever (1) is fixedly connected to the rotating shaft (3) inside the limiting bushing (2). The rotating shaft (3) inside the magnetic base (4) is provided with an N-pole magnet (7) and an S-pole magnet (8) that generate attraction along the installation direction of the magnetic base (4) when the lever sleeve (5) is located inside the limiting groove (2.2).

2. The permanent magnet base adsorption switching device according to claim 1, characterized in that, The lever (1) is fixedly connected to the rotating shaft (3) on the other side, and a limiting part (1.1) is provided. One side of the spring (6) abuts against the limiting part (1.1), and the other side of the spring (6) abuts against the inner wall of the lever sleeve (5).

3. The permanent magnet base adsorption switching device according to claim 2, characterized in that, The inner side of the lever sleeve (5) is provided with a spring groove (5.1), and the spring (6) is provided in the spring groove (5.1). The other side of the spring (6) abuts against the bottom wall of the spring groove (5.1). The lever sleeve (5) is provided with a protruding ring (5.2) on the outer wall of the top side of the spring groove (5.1).

4. The permanent magnet base adsorption switching device according to claim 2, characterized in that, The lever (1) is fixedly connected to the rotary shaft (3) on the other end of which a ball head (1.2) is provided.

5. The permanent magnet base adsorption switching device according to claim 1, characterized in that, The magnetic base (4) includes a front cover (4.1), a housing (4.2), and a rear cover (4.3). The front cover (4.1) is provided with a first bearing (9). The front cover (4.1) is fixedly connected to one end of the housing (4.2). The other end of the housing (4.2) is provided with a second bearing (10). The rotating shaft (3) is sleeved in the first bearing (9) and the second bearing (10). The rear cover (4.3) is fixedly connected to the other end of the housing (4.2).

6. The permanent magnet base adsorption switching device according to claim 5, characterized in that, The limiting bushing (2) is fixedly connected to the magnetic base back cover (4.3).

7. The permanent magnet base adsorption switching device according to claim 6, characterized in that, The limiting bushing (2) is a frustum-shaped structure with a larger bottom surface than the magnetic base back cover (4.3), and the long slot (2.1) is provided on the curved wall of the limiting bushing (2).

8. The permanent magnet magnetic base adsorption switching device according to claim 7, characterized in that, The rotating shaft (3) and the lever (1) are fixedly connected by a ramp with the inner wall shape of the curved surface of the limiting bushing (2).

9. A permanent magnet magnetic base adsorption switching device according to claim 6, characterized in that, The limiting bushing (2) is fixedly connected to the magnetic base back cover (4.3) by the first screw (11), and the magnetic base back cover (4.3) is fixedly connected to the magnetic base outer shell (4.2) by the second screw (12).

10. A permanent magnet base adsorption switching device according to claim 1, characterized in that, The N-pole magnet (7) and the S-pole magnet (8) are fixedly connected to the rotating shaft (3) by a third screw (13).

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