Magnetic positioning pin

Abstract

The utility model mainly relates to the technical field of positioning pins, in particular to a magnetic positioning pin which comprises a pin sleeve and a pin core which are coaxially connected in a sleeved mode, and a magnet sleeve is arranged between the outer surface of the pin core and the inner wall of the pin sleeve. A bottom plate is detachably installed at the bottom of the pin sleeve, a magnetism isolating sleeve which is coaxially distributed with the bottom plate is fixedly installed at the top of the bottom plate, the magnetism isolating sleeve is made of non-magnetic materials, and the outer diameter of the magnetism isolating sleeve is matched with an annular groove formed in the bottom of the pin sleeve in an inserted mode. When the bottom plate is installed at the bottom of the pin sleeve, the magnetic isolation sleeve can be inserted into the annular groove, the magnetic isolation sleeve can isolate most of magnetic force of the magnet sleeve, and when the pin sleeve is installed in the positioning hole in an inserted mode or detached from the positioning hole, large magnetic attraction resistance does not need to be overcome, so that installation and detachment are easier, and the positioning hole is not prone to being scratched; the locking block is driven to rotate through the shaft rod, so that the matching groove and the locking block are locked in an aligned or staggered mode, the bottom plate can be mounted or dismounted, and the use process is simple and convenient.

Description

Technical Field

[0001] This utility model mainly relates to the field of positioning pin technology, specifically to a magnetic positioning pin. Background Technology

[0002] Locating pins, as common positioning elements in the mechanical field, are widely used in the assembly and positioning of various plates and parts. Traditional mechanical locating pins achieve positioning through interference fits or threaded structures, but they suffer from problems such as cumbersome operation, easy wear, and low repeatability. In recent years, magnetic locating pins have gradually become a research hotspot. By embedding permanent magnets or electromagnetic structures inside the locating pin, they utilize magnetic attraction to fix the pin to the inner wall of the positioning hole, offering the advantage of quick assembly and disassembly.

[0003] However, existing magnetic locating pins have significant drawbacks in practical applications: while excessively strong magnets improve positioning stability, they also require overcoming greater magnetic resistance during installation and removal, making operation laborious and prone to scratching the workpiece surface. Conversely, reducing magnet strength affects positioning reliability. Therefore, there is an urgent need for a new type of magnetic locating pin structure that can maintain high magnetic positioning performance while allowing for convenient adjustment of the magnetic force. Utility Model Content

[0004] 1. The technical problem to be solved by the utility model:

[0005] This invention provides a magnetic positioning pin to solve the technical problems existing in the background art.

[0006] 2. Technical Solution:

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows: a magnetic positioning pin, comprising a pin sleeve and a pin core that are coaxially connected, wherein a magnet sleeve is provided between the outer surface of the pin core and the inner wall of the pin sleeve;

[0008] The bottom of the pin sleeve is detachably mounted with a base plate, and a magnetic shielding sleeve is fixedly mounted on the top of the base plate and distributed coaxially therewith. The magnetic shielding sleeve is made of non-magnetic material, and its outer diameter is inserted into the annular groove opened at the bottom of the pin sleeve.

[0009] Furthermore, a movable groove is coaxially formed at the bottom of the pin core, and a rotatable shaft is provided in the movable groove. The bottom of the shaft extends to the outside of the pin core and is fixedly installed with a locking block. The locking block is adapted to the contour of the mating groove formed on the base plate.

[0010] Furthermore, a sliding groove is provided inside the pin core. One end of the sliding groove is connected to the movable groove, and the other end is connected to the guide hole. A slider is slidably installed in the sliding groove. One end of the slider is rotatably connected to the shaft, and the other end is fixedly installed with a sliding rod. The sliding rod is slidably connected to the guide hole and is fitted with a spring. The spring is used to force the slider to move upward along the sliding groove, so that the locking block elastically presses against the lower surface of the base plate.

[0011] Furthermore, the outer wall of the pin sleeve is provided with multiple through grooves evenly distributed along the circumference. Each through groove extends along the axial direction of the pin sleeve and is arranged at equal intervals to form a regular distribution structure covering the entire outer wall.

[0012] Furthermore, the outer and inner surfaces of the magnet sleeve are bonded to the inner wall of the pin sleeve and the outer surface of the pin core with adhesive.

[0013] Furthermore, a limiting sleeve is movably provided on the pin sleeve, and the outer wall of the limiting sleeve is provided with a plurality of threaded holes evenly distributed along the circumference, and each threaded hole is fitted with a positioning screw.

[0014] 3. Beneficial effects:

[0015] Compared with the prior art, the technical solution provided by this utility model has the following advantages: when the base plate is installed at the bottom of the pin sleeve, the magnetic isolation sleeve can be inserted into the annular groove. The magnetic isolation sleeve can isolate most of the magnetic force of the magnetic sleeve. When the pin sleeve is inserted into the positioning hole or removed from the positioning hole, there is no need to overcome a large magnetic attraction resistance, so the installation and removal are easier and less likely to cause scratches to the positioning hole.

[0016] The base plate can be installed or removed by rotating the locking block with the shaft so that the mating groove is aligned or misaligned with the locking block. The process is simple and convenient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the exploded structure of the pin sleeve and the magnetic shielding sleeve of this utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the pin core of this utility model;

[0021] Figure 5 This is a schematic diagram of the exploded structure of the limiting sleeve and threaded hole of this utility model.

[0022] Figure label:

[0023] 1. Pin sleeve; 101. Annular groove; 102. Through groove; 2. Pin core; 201. Movable groove; 202. Sliding groove; 203. Guide hole; 3. Magnet sleeve; 4. Base plate; 401. Mating groove; 5. Magnetic shielding sleeve; 6. Shaft; 7. Locking block; 8. Sliding block; 9. Sliding rod; 10. Spring; 11. Limiting sleeve; 111. Threaded hole; 12. Positioning screw. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0028] See attached document Figure 1-5A magnetic positioning pin includes a pin sleeve 1 and a pin core 2 that are coaxially connected, and a magnetic sleeve 3 is provided between the outer surface of the pin core 2 and the inner wall of the pin sleeve 1.

[0029] The bottom of the pin sleeve 1 is detachably mounted with a base plate 4, and a magnetic shielding sleeve 5 is fixedly mounted on the top of the base plate 4 and distributed coaxially therewith. The magnetic shielding sleeve 5 is made of non-magnetic material, and its outer diameter is inserted into the annular groove 101 opened at the bottom of the pin sleeve 1.

[0030] In this embodiment, when the base plate 4 is installed at the bottom of the pin sleeve 1, the magnetic shielding sleeve 5 can be inserted into the annular groove 101. The magnetic shielding sleeve 5 can isolate most of the magnetic force of the magnet sleeve 3. At this time, when the pin sleeve 1 is inserted into the positioning hole, it does not need to overcome a large magnetic attraction resistance, so the installation is easier and less likely to scratch the positioning hole. After it is installed into the positioning hole, the base plate 4 is removed from the bottom of the pin sleeve 1 so that the magnetic shielding sleeve 5 can be pulled out from the annular groove 101. At this time, the magnetic force of the magnet sleeve 3 can make the outer wall of the pin sleeve 1 and the inner wall of the positioning hole attract each other to achieve positioning. Similarly, the magnetic shielding sleeve 5 is inserted into the annular groove 101, and the pin sleeve 1 can be easily taken out from the positioning hole.

[0031] In the above embodiments, the outer and inner surfaces of the magnet sleeve 3 are bonded to the inner wall of the pin sleeve 1 and the outer surface of the pin core 2 by adhesive.

[0032] The bottom of the pin 2 is coaxially provided with a movable groove 201, and a rotatable shaft 6 is provided in the movable groove 201. The bottom of the shaft 6 extends to the outside of the pin 2 and is fixedly installed with a locking block 7. The locking block 7 is adapted to the contour of the mating groove 401 opened on the base plate 4.

[0033] In this embodiment, the locking block 7 is rotated by the shaft 6 so that when the magnetic sleeve 5 is inserted into the annular groove 101, the mating groove 401 and the locking block 7 are aligned. The locking block 7 can pass through the mating groove 401. The shaft 6 then drives the locking block 7 to rotate to form a misaligned lock, so that the locking block 7 abuts against the lower surface of the base plate 4 to achieve locking. The base plate 4 can then be installed at the bottom of the pin sleeve 1. Similarly, the locking can be released and the base plate 4 can be removed from the bottom of the pin sleeve 1.

[0034] The pin core 2 has a sliding groove 202. One end of the sliding groove 202 is connected to the movable groove 201, and the other end is connected to the guide hole 203. A slider 8 is slidably installed in the sliding groove 202. One end of the slider 8 is rotatably connected to the shaft 6, and the other end is fixedly installed with a sliding rod 9. The sliding rod 9 is slidably connected to the guide hole 203 and is fitted with a spring 10. The spring 10 is used to force the slider 8 to move upward along the sliding groove 202, so that the locking block 7 elastically presses against the lower surface of the base plate 4.

[0035] In this embodiment, the shaft 6 is rotatably connected to the slider 8, so that the locking block 7 can be driven to rotate through the shaft 6. When the locking block 7 and the mating groove 401 are misaligned and abut against the lower surface of the base plate 4, the spring 10 is used to give the slider 8 an upward force along the sliding groove 202, so that the locking block 7 can elastically press against the lower surface of the base plate 4 to improve the locking effect.

[0036] The outer wall of the pin sleeve 1 is provided with a plurality of through grooves 102 evenly distributed along the circumference. Each through groove 102 extends along the axial direction of the pin sleeve 1 and is arranged at equal intervals to form a regular distribution structure covering the entire outer wall.

[0037] In this embodiment, the through groove 102 is connected to the annular groove 101, so that part of the magnet sleeve 3 can be directly exposed through the through groove 102, thereby increasing the magnetic strength with the inner wall of the positioning hole.

[0038] The pin sleeve 1 is movably provided with a limiting sleeve 11. The outer wall of the limiting sleeve 11 is provided with a plurality of threaded holes 111 evenly distributed along the circumference, and each threaded hole 111 is fitted with a positioning screw 12.

[0039] In this embodiment, the limiting sleeve 11 is used to abut against the top of the limiting hole to limit it, and the limiting sleeve 11 can move to different heights on the pin sleeve 1. By tightening the positioning screw 12, its end abuts against the outer wall of the pin sleeve 1 to lock the limiting sleeve 11, which is used to adapt to positioning holes of different depths.

[0040] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, 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 modifications and improvements 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.

[0041] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art.

Claims

1. A magnetic positioning pin, characterized in that: It includes a coaxially sleeved pin (1) and a pin core (2), and a magnet sleeve (3) is provided between the outer surface of the pin core (2) and the inner wall of the pin sleeve (1). The bottom of the pin sleeve (1) is detachably mounted with a base plate (4), and the top of the base plate (4) is fixedly mounted with a magnetic shielding sleeve (5) distributed coaxially with it. The magnetic shielding sleeve (5) is made of non-magnetic material, and its outer diameter is inserted into the annular groove (101) opened at the bottom of the pin sleeve (1).

2. A magnetic positioning pin according to claim 1, characterized in that: The bottom of the pin (2) is coaxially provided with a movable groove (201), and a rotatable shaft (6) is provided in the movable groove (201). The bottom of the shaft (6) extends to the outside of the pin (2) and is fixedly installed with a locking block (7). The locking block (7) is adapted to the contour of the mating groove (401) opened on the base plate (4).

3. A magnetic positioning pin according to claim 2, characterized in that: The pin core (2) has a sliding groove (202) inside. One end of the sliding groove (202) is connected to the movable groove (201), and the other end is connected to the guide hole (203). A slider (8) is slidably installed in the sliding groove (202). One end of the slider (8) is rotatably connected to the shaft (6), and the other end is fixedly installed with a sliding rod (9). The sliding rod (9) is slidably connected to the guide hole (203) and is fitted with a spring (10). The spring (10) is used to force the slider (8) to move upward along the sliding groove (202), so that the locking block (7) elastically presses against the lower surface of the base plate (4).

4. A magnetic positioning pin according to claim 1, characterized in that: The outer wall of the pin sleeve (1) is provided with a plurality of through grooves (102) evenly distributed along the circumference. Each through groove (102) extends along the axial direction of the pin sleeve (1) and is arranged at equal intervals to form a regular distribution structure covering the entire outer wall.

5. A magnetic positioning pin according to claim 1, characterized in that: The outer and inner surfaces of the magnet sleeve (3) are bonded to the inner wall of the pin sleeve (1) and the outer surface of the pin core (2) with glue.

6. A magnetic positioning pin according to claim 1, characterized in that: The pin sleeve (1) is movably provided with a limiting sleeve (11), and the outer wall of the limiting sleeve (11) is provided with a plurality of threaded holes (111) evenly distributed along the circumference, and each threaded hole (111) is equipped with a positioning screw (12).

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