A multi-dimensional presentation mechanism for enterprise management
By using a sloping self-locking fixing mechanism and a magnetic unlocking mechanism, the problem of easy disassembly of display boards in enterprise management is solved, achieving high-security fixing of display boards and convenient authorized unlocking, thereby improving the security of information display and management efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XIAN GUANGYUBAO ENTERPRISE MANAGEMENT CO LTD
- Filing Date
- 2026-04-13
- Publication Date
- 2026-05-29
AI Technical Summary
The existing enterprise management multi-dimensional display institutions lack a dynamic locking mechanism, which allows anyone to dismantle the display panels at will, posing information security threats and management difficulties.
It adopts a fixing mechanism and a magnetic unlocking mechanism based on the inclined plane self-locking principle. The linkage design of positioning rod, staggered piece and inclined block realizes unidirectional self-locking fixing, and the dual triggering mechanism of magnetic rod and top rod ensures authorized unlocking.
It achieves high-security fixation of the display board, prevents unauthorized disassembly, simplifies the installation process, improves the efficiency of updating display content, and ensures the convenience and reliability of operation.
Smart Images

Figure CN122116770A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of enterprise management technology, and more specifically, to a multi-dimensional display mechanism for enterprise management. Background Technology
[0002] In existing technologies, multi-dimensional display structures for enterprise management typically employ a structure in which multiple display boards are mounted on fixed supports using hooks, slots, or simple clamps to support the centralized display of multi-dimensional content such as internal enterprise information, organizational structure, and project progress. However, this installation method only achieves a simple physical connection between the display boards and the supports, lacking a dynamic locking mechanism that is associated with the display board's own status or user permissions. This allows anyone approaching the display area to manually remove the display boards from the supports without the need for special tools or authorization verification, thus exposing the display content to the risk of unauthorized replacement, malicious removal, or disordered order.
[0003] The aforementioned security vulnerabilities directly threaten the seriousness and accuracy of enterprise management information display in practical applications. Due to the inability to effectively control the dismantling of display boards, important announcements, key performance indicators, or confidential information may be arbitrarily replaced or damaged by unauthorized personnel. This not only disrupts the continuity and credibility of the displayed information but also makes it difficult to identify internal responsibilities due to the inability to trace the operators. At the same time, frequent unauthorized dismantling increases the workload of managers in resetting and verifying the boards daily, turning the display tools originally intended to improve the efficiency of information transmission into a weak link in management order. Summary of the Invention
[0004] (a) Technical problems to be solved In view of the problems existing in the prior art, the present invention provides a multi-dimensional display mechanism for enterprise management to solve the technical problems mentioned in the background art.
[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a multi-dimensional display mechanism for enterprise management, comprising a movable frame, wherein an embedded groove is provided on the movable frame, and a display panel is snapped into the embedded groove; and further comprising a fixing mechanism and a releasing mechanism; The fixing mechanism includes multiple fixing tubes fixedly installed on the movable frame. Each fixing tube is coaxially sleeved with a positioning rod. The display board is provided with a bidirectional tube. The positioning rods on both sides are inserted into the bidirectional tube. A fixing plate is fixedly provided at the lower end of the fixing tube. Multiple staggered plates are equally spaced and attached to the lower end of the fixing plate. Each staggered plate is provided with a slanted push spring. The multiple slanted push springs are respectively connected to the multiple staggered plates and the fixing plate at the upper end. The disassembly mechanism includes a top plate that fits onto the upper end of the fixed tube, and each top plate is provided with two guide sleeves.
[0006] Preferably, multiple sets of interlaced holes are equally spaced on the inner wall of each of the interlaced pieces and the fixed piece, and each of the interlaced pieces is provided with a magnetic block.
[0007] Preferably, the fixing mechanism further includes a plurality of conical grooves formed on the inner wall of the fixing tube, each conical groove having a slidable inclined block in a limiting manner, and the lower end of the inclined block having a bottom rod.
[0008] Preferably, the multiple interlaced plates rotate in the same direction after being subjected to compressive force, which not only compresses the oblique push spring but also places the multiple interlaced holes in a coaxial position, and the diameter of the multiple interlaced holes is the same as the diameter of the bottom rod.
[0009] Preferably, each inclined block has two internal rods that are slidably connected within it, and each of the two internal rods is equipped with a pressure plate. Multiple pressure plates are respectively attached to the outer wall of the positioning rod, and the upper end of the positioning rod is provided with a handle.
[0010] Preferably, each of the pressure plates is provided with a transverse spring, and the transverse spring abuts against the inclined block, and each of the pressure plates is provided with a limiting rod that is coaxially arranged with the internal rod.
[0011] Preferably, the pressure plate remains in contact with the positioning rod as the inclined block slides along the conical groove, and the position between the limiting rod and the inclined block changes accordingly as the inclined block slides.
[0012] Preferably, the upper end of the fixed tube is provided with multiple slots at equal intervals, and the multiple slots are arranged along the axis of the fixed tube. Each inclined block is provided with a top rod, and the top rod is located in the slot.
[0013] Preferably, the release mechanism further includes a plurality of push rods mounted on the top plate, the plurality of push rods being inserted into the slot and pressing against the top rod.
[0014] Preferably, each of the guide sleeves is slidably provided with a magnetic rod, the magnetic rod is provided with a push plate, the side wall of the fixed tube is provided with a lateral groove, the magnetic rod is slidably connected in the lateral groove, and the multiple magnetic blocks have the same magnetic pole and are opposite magnetic poles to the magnetic rod.
[0015] (III) Beneficial Effects Compared with existing technologies, the present invention provides a multi-dimensional display mechanism for enterprise management, which has the following beneficial effects: This invention fundamentally solves the security loophole of existing display board installation methods, which allow anyone to disassemble the board at will, through an innovative one-way self-locking fixing mechanism. After the positioning rod in the fixing mechanism is inserted into the fixing tube, the pressure plate, under the action of the transverse spring, always keeps the positioning rod pressed against the outer wall of the positioning rod. When someone tries to pull the positioning rod upward, the pressure plate moves upward with the positioning rod and drives the inclined block to slide upward along the conical groove. When the inclined block slides upward, it contracts towards the axis, further increasing the pressing force of the pressure plate on the positioning rod. At the same time, the limiting rod abuts against the upper end of the inclined block to form a mechanical limit lock, making it impossible for the positioning rod to be pulled out of the fixing tube under normal conditions. This design based on the inclined plane self-locking principle ensures that once the display board is installed, it forms a locked state that gets tighter and tighter, completely eliminating the possibility of unauthorized personnel disassembling it by pulling it by hand or prying it with simple tools.
[0016] The magnetic suction and top rod linkage unlocking mechanism constructed in this invention achieves precise control over the disassembly authority of the display board and verification of the operation sequence. Unlocking requires two conditions to be met simultaneously: First, the magnetic rod is pushed in along the lateral groove so that the magnetic rod and the magnetic blocks on the interlaced pieces attract each other, overcoming the elastic force of the inclined push spring to drive multiple interlaced pieces to rotate synchronously, so that the interlaced holes overlap into a coaxial state, providing a downward channel for the bottom rod; Second, the top plate is pressed down so that the top rod pushes the top rod through the groove, driving the inclined block to slide down along the conical groove and expand outward, releasing the limiting rod's limiting lock on the pressure plate and releasing the clamping force of the transverse spring. The two operations must be completed in sequence and are indispensable. This dual triggering mechanism makes the unlocking operation not only dependent on the structural matching of the special tool, but also on the accurate mastery of the unlocking steps. Even if unauthorized personnel accidentally obtain the tool, they will not be able to complete the unlocking.
[0017] The staggered design of the interlaced plates and holes in this invention provides a reliable mechanical blocking layer for the fixing mechanism under normal conditions. Multiple interlaced plates are kept in an interlaced state under the action of the inclined push spring, so that the interlaced holes are staggered. The bottom rod is blocked above the inner wall of the interlaced plates and cannot go down, so that the inclined block is always kept in the locked position and cannot be accidentally pushed. When unlocking is required, the magnetic rod attracts the interlaced plates to rotate, so that the interlaced holes overlap. After the bottom rod obtains a downward channel, it can push the inclined block to unlock. This design, which combines normal blocking and authorized conduction, ensures that the fixing mechanism is always in a complete mechanical locking state in the unauthorized state, and there is no physical path for unauthorized operation, providing reliable protection for the display board in all weather conditions.
[0018] This invention achieves precise switching of the pressure plate clamping force between locked and unlocked states through the coordinated stroke control of the limiting rod and the inclined block. In the locked state, the limiting rod and the upper end of the inclined block remain in contact, restricting the space for the inclined block to slide further upward, thus keeping the pressure plate clamping force on the positioning rod within the effective locking range. When the inclined block is pushed downward by the top rod and expands outward, the limiting rod and the inclined block disengage, the elastic force of the transverse spring is released, and the pressure plate clamping force on the positioning rod is released. This state switching design based on stroke limit makes the change in pressure plate clamping force before and after unlocking clear, avoiding the problem that the positioning rod is still difficult to pull out after unlocking due to residual clamping force, thus ensuring the smoothness and reliability of the unlocking operation.
[0019] This invention achieves high-security display board fixing while fully considering the convenience and adaptability for actual enterprise use. The installation process of the display board requires no tools; simply inserting the positioning rod into the fixing tube automatically locks it in just a few seconds, significantly improving the efficiency of changing boards when updating display content. The unlocking tool adopts an integrated structure of top plate and magnetic rod, which is lightweight and compact, making it easy for managers to carry. Multiple fixed positions can be set on the mobile frame according to display needs, allowing for flexible combination of multiple display boards. At the same time, all moving parts are made of wear-resistant materials and have a sealed design, maintaining stable locking force and unlocking sensitivity even after long-term use. This provides a safe, efficient, and standardized hardware guarantee for information display work in modern enterprise management. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of a multi-dimensional display mechanism for enterprise management according to the present invention; Figure 2 This is a schematic diagram of the structure of the movable frame in this invention; Figure 3 This is a schematic diagram of the structure of the fixing tube and the positioning rod in this invention; Figure 4 This is a cross-sectional view of the fixed tube and magnetic rod in this invention; Figure 5 This is a cross-sectional view of the fixing tube and positioning rod in this invention; Figure 6 This is a schematic diagram of the structure in this invention where multiple staggered holes are located at the same axial position; Figure 7 This is a schematic diagram of the oblique push spring in the unforced state in this invention; Figure 8 This is a schematic diagram of the structure of the fixed plate and the staggered plate in this invention; Figure 9 This is a cross-sectional view of the fixed tube in this invention.
[0021] In the diagram: 11. Movable frame; 12. Embedded groove; 13. Display board; 21. Fixing mechanism; 22. Fixing tube; 23. Positioning rod; 24. Two-way tube; 25. Fixing piece; 26. Interlaced piece; 27. Inclined push spring; 28. Interlaced hole; 29. Magnetic block; 31. Unlocking mechanism; 32. Top plate; 33. Guide sleeve; 34. Top rod; 35. Magnetic rod; 36. Push plate; 37. Side groove; 210. Conical groove; 211. Inclined block; 212. Bottom rod; 213. Internal rod; 214. Pressure plate; 215. Handle; 216. Lateral spring; 217. Limiting rod; 218. Groove; 219. Top rod. Detailed Implementation
[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0024] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.
[0025] Please see Figures 1 to 9 This embodiment provides a multi-dimensional display mechanism for enterprise management. This mechanism aims to solve the technical problems of poor information display security caused by the lack of a follow-up locking mechanism in the existing display board installation method and the fact that anyone can disassemble it at will. By integrating a fixing mechanism based on the inclined plane self-locking principle and an unlocking mechanism that requires a special magnetic tool to trigger, it realizes one-way self-locking fixing and authorized unlocking between the display board and the mobile frame, effectively preventing unauthorized personnel from disassembling the display board at will.
[0026] 1. Overall structure and initial state The multi-dimensional display mechanism for enterprise management includes a mobile frame 11 as a mobile carrier. The mobile frame 11 has an embedded groove 12 for initial positioning, and a display panel 13 is engaged in the embedded groove 12. It also includes a fixing mechanism 21 and a releasing mechanism 31 installed between the mobile frame 11 and the display panel 13. The fixing mechanism 21 is used to achieve one-way self-locking fixation between the display panel 13 and the mobile frame 11. The releasing mechanism 31 is used to release the locking state of the fixing mechanism 21 under certain conditions.
[0027] 2. Composition of the core system 2.1 Fixed mechanism 21 The fixing mechanism 21 is the core unit for achieving unidirectional self-locking fixation of the display panel 13. It includes multiple fixing tubes 22 fixedly installed on the movable frame 11. Each fixing tube 22 has a positioning rod 23 coaxially sleeved inside for locking. A bidirectional tube 24 is fixedly installed on the display panel 13, and the positioning rods 23 on both sides are respectively inserted into the corresponding bidirectional tubes 24. A fixing plate 25 is fixedly installed at the lower end of the fixing tube 22, and multiple rotatable staggered plates 26 are equally spaced and attached to the lower end of the fixing plate 25. Each staggered plate 26 is respectively provided with A push spring 27 is provided, with its upper end connected to an interlaced plate 26 or a fixed plate 25 above. Multiple sets of interlaced holes 28 are evenly spaced on the inner wall of each interlaced plate 26 and fixed plate 25, and a magnetic block 29 is provided on each interlaced plate 26. Multiple conical grooves 210 are circumferentially formed on the inner wall of the fixed tube 22, and a slidable inclined block 211 is limited and slidably disposed within each conical groove 210. A bottom rod 212 is fixedly disposed at the lower end of the inclined block 211. When the multiple interlaced plates 26 are subjected to compressive force, they rotate in the same direction... When the inclined spring 27 is compressed and the multiple interlaced holes 28 are in a coaxial position, the diameter of the multiple interlaced holes 28 is equal to the diameter of the bottom rod 212. Each inclined block 211 has two internal rods 213 that are slidably connected within it, and pressure plates 214 are fixedly installed on the two internal rods 213. The multiple pressure plates 214 are respectively attached to the outer wall of the positioning rod 23. The upper end of the positioning rod 23 is provided with a handle 215 for operation. Each pressure plate 214 is provided with a transverse spring 216, and the outer end of the transverse spring 216 abuts against the inclined block 212. On the inner wall of 11, each pressure plate 214 is provided with a limiting rod 217 coaxially arranged with the internal rod 213. When the inclined block 211 slides along the conical groove 210, the pressure plate 214 always remains in contact with the positioning rod 23 and the relative position between the limiting rod 217 and the inclined block 211 changes with the sliding of the inclined block 211. The upper end of the fixed tube 22 is provided with multiple slots 218 at equal intervals along the circumference. Each inclined block 211 is fixedly provided with a top rod 219 and the top rod 219 is located in the corresponding slot 218.
[0028] 2.2 Unlocking Mechanism 31 The unlocking mechanism 31 is the core unit for unlocking the fixing mechanism. It includes a top plate 32 that can be attached to the upper end of the fixing tube 22. Two guide sleeves 33 are fixedly installed on each top plate 32. Multiple push rods 34 are fixedly installed on the top plate 32 and can be inserted into the corresponding slots 218 and pressed against the top rods 219. A magnetic rod 35 is slidably installed in each guide sleeve 33 and a push plate 36 is fixedly installed on the magnetic rod 35. A lateral groove 37 is opened on the side wall of the fixing tube 22 and the magnetic rod 35 is slidably connected in the lateral groove 37. The magnetic blocks 29 on the multiple interlaced plates 26 have the same magnetic pole and are opposite magnetic poles to the magnetic rod 35 so as to generate mutual attraction.
[0029] 3. Working process and principle of the device The installation, fixing, unlocking, and disassembly process of the multi-dimensional display mechanism for enterprise management is as follows: When installing the display panel 13, the operator first inserts one side of the display panel 13 into the recessed groove 12 on the movable frame 11 to achieve initial positioning. Then, the positioning rod 23 passes through the fixing tube 22 and is inserted into the bidirectional tube 24 on the display panel 13. During the insertion of the positioning rod 23, because multiple inclined push springs 27 are in their initial state, multiple interlaced pieces 26 and fixing pieces 25 are interlaced. At this time, multiple interlaced holes 28 are staggered and in a non-coaxial state. The bottom rod 212 abuts against the inner wall of the interlaced piece 26 and cannot move downward. Therefore, the inclined block 211 cannot slide downward along the conical groove 210 to expand, and at the same time, it limits... Positioning rod 217 abuts against the upper end of inclined block 211, keeping pressure plate 214 pressing against positioning rod 23. When positioning rod 23 is inserted into place, the operator pulls handle 215 upward, and positioning rod 23 tends to move upward. As pressure plate 214 is pressed against the outer wall of positioning rod 23 under the action of transverse spring 216, pressure plate 214 moves upward with positioning rod 23, causing inclined block 211 to slide upward along tapered groove 210 and retract towards the axis. However, at this time, limiting rod 217 abuts against the upper end of inclined block 211 to form a limiting lock. At the same time, handle 215 abuts against the upper end face of fixed tube 22, and positioning rod 23 is locked in a fixed position and cannot be pulled out, realizing one-way self-locking fixation of display board 13.
[0030] When authorized personnel need to disassemble display panel 13, a dedicated disassembly mechanism 31 must be used. The operator first places the top plate 32 on the upper end of the fixing tube 22, aligns the top rod 34 with and inserts it into the slot 218 on the fixing tube 22, and simultaneously slides the magnetic rod 35 inward along the lateral slot 37. Since the magnetic rod 35 and the magnetic block 29 on the interlaced plate 26 are opposite magnetic poles, the magnetic attraction generated by the magnetic rod 35 attracts multiple interlaced plates 26 to overcome the elastic force of the inclined push spring 27 and rotate in the same direction, so that the interlaced holes 28 on the multiple interlaced plates 26 overlap with the interlaced holes 28 on the fixing plate 25 and become coaxial. At this time, the bottom rod 212 The plate can freely pass through the overlapping interlaced holes 28. The operator then presses down on the top plate 32. The top rod 34 pushes the inclined block 211 along the conical groove 210 to slide down and expand outward through the top rod 219. When the inclined block 211 moves down, it drives the bottom rod 212 to pass through the overlapping interlaced holes 28. At the same time, the outward expansion of the inclined block 211 causes the limiting rod 217 to disengage from the inclined block 211. The pressure of the transverse spring 216 on the pressure plate 214 is released. The pressure plate 214 is no longer pressed against the outer wall of the positioning rod 23. The locking state of the positioning rod 23 is released, and the operator can then pull out the positioning rod 23 to remove the display plate 13.
[0031] During the entire unlocking process, only an operator holding a special tool consisting of the top plate 32, the top rod 34, and the magnetic rod 35 can complete the unlocking operation. Unauthorized personnel cannot unlock the panel because they cannot make the intersecting holes 28 coaxial and cannot push the inclined block 211 downward, effectively preventing unauthorized disassembly of the display panel.
[0032] Summary of working principle: This invention achieves unidirectional self-locking fixation of the positioning rod 23 through the cooperation of the inclined block 211 and the conical groove 210 in the fixing mechanism 21, the self-locking structure of the pressure plate 214 and the limiting rod 217, and the linkage design of the staggered piece 26 and the staggered hole 28. Through the magnetic attraction of the magnetic rod 35 to the staggered piece 26 and the pushing of the top rod 34 to the inclined block 211 in the unlocking mechanism 31, the authorized unlocking that requires special tools is achieved. The two work together to effectively ensure the installation safety and operation permission control of the display board 13 in the process of enterprise management display.
[0033] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A multi-dimensional display mechanism for enterprise management, comprising a movable frame (11), wherein the movable frame (11) is provided with an embedded groove (12), and a display panel (13) is snapped into the embedded groove (12); characterized in that: It also includes a fixing mechanism (21) and a releasing mechanism (31); The fixing mechanism (21) includes multiple fixing tubes (22) fixedly installed on the movable frame (11). Each fixing tube (22) is coaxially sleeved with a positioning rod (23). The display board (13) is provided with a bidirectional tube (24). The positioning rods (23) on both sides are inserted into the bidirectional tube (24). A fixing plate (25) is fixedly provided at the lower end of the fixing tube (22). Multiple staggered plates (26) are equally spaced and attached to the lower end of the fixing plate (25). Each staggered plate (26) is provided with a slanted push spring (27). The multiple slanted push springs (27) are respectively connected to the multiple staggered plates (26) and the fixing plate (25) at the upper end. The disassembly mechanism (31) includes a top plate (32) attached to the upper end of the fixed tube (22), and each top plate (32) is provided with two guide sleeves (33).
2. The multi-dimensional display mechanism for enterprise management according to claim 1, characterized in that: Multiple sets of interlaced holes (28) are equally spaced on the inner wall of each of the interlaced pieces (26) and the fixed piece (25), and each of the interlaced pieces (26) is provided with a magnetic block (29).
3. The multi-dimensional display mechanism for enterprise management according to claim 2, characterized in that: The fixing mechanism (21) further includes a plurality of conical grooves (210) opened on the inner wall of the fixing tube (22), each conical groove (210) is provided with a sliding inclined block (211), and the lower end of the inclined block (211) is provided with a bottom rod (212).
4. A multi-dimensional display mechanism for enterprise management according to claim 3, characterized in that: After being subjected to compressive force, the multiple interlaced plates (26) will rotate in the same direction, which not only compresses the oblique push spring (27) but also puts the multiple interlaced holes (28) in a coaxial position. The diameter of the multiple interlaced holes (28) is the same as the diameter of the bottom rod (212).
5. A multi-dimensional display mechanism for enterprise management according to claim 4, characterized in that: Each of the inclined blocks (211) has two internal rods (213) that are slidably connected within it, and pressure plates (214) are installed on the two internal rods (213). Multiple pressure plates (214) are respectively attached to the outer wall of the positioning rod (23), and a handle (215) is provided at the upper end of the positioning rod (23).
6. A multi-dimensional display mechanism for enterprise management according to claim 5, characterized in that: Each of the pressure plates (214) is provided with a transverse spring (216), and the transverse spring (216) abuts against the inclined block (211). Each of the pressure plates (214) is provided with a limiting rod (217) coaxially arranged with the internal rod (213).
7. A multi-dimensional display mechanism for enterprise management according to claim 6, characterized in that: When the inclined block (211) slides along the conical groove (210), the pressure plate (214) always fits against the positioning rod (23), and as the inclined block (211) slides, the position between the limiting rod (217) and the inclined block (211) will change accordingly.
8. A multi-dimensional display mechanism for enterprise management according to claim 7, characterized in that: The upper end of the fixed tube (22) is provided with a plurality of slots (218) at equal intervals, and the plurality of slots (218) are arranged along the axis of the fixed tube (22). Each inclined block (211) is provided with a top rod (219), and the top rod (219) is located in the slot (218).
9. A multi-dimensional display mechanism for enterprise management according to claim 8, characterized in that: The disassembly mechanism (31) also includes a plurality of push rods (34) mounted on the top plate (32), the plurality of push rods (34) being inserted into the slot (218) and the plurality of push rods (34) pressing on the top rod (219).
10. A multi-dimensional display mechanism for enterprise management according to claim 2, characterized in that: Each of the guide sleeves (33) is slidably provided with a magnetic rod (35), and a push plate (36) is provided on the magnetic rod (35). A lateral groove (37) is provided on the side wall of the fixed tube (22). The magnetic rod (35) is slidably connected in the lateral groove (37). Multiple magnetic blocks (29) have the same magnetic pole and are opposite magnetic poles to the magnetic rod (35).