A modular quick-install guide rail pair

Abstract

The present invention provides a modular quick-install guide rail pair, including a guide rail and a slider, a positioning mechanism is provided inside the notch of the guide rail, and the positioning mechanism includes an elastic clamping unit for fixing the positioning head and a driving unit for driving the elastic clamping unit. The present invention relates to the field of guide rail technology. The present invention realizes rapid splicing between two guide rails by providing a notch on the guide rail and integrating a positioning mechanism. This design enables the guide rail to be quickly spliced ​​in any length according to actual needs, greatly improving the flexibility and adaptability of use. During the splicing process, there is no need to perform tedious calibration operations, nor to rely on complicated auxiliary tools and installation steps, thereby reducing labor costs and time costs. In addition, the pre-limiting unit and locking unit introduced in the present invention provide a firm limiting guarantee for the drive shaft of the positioning mechanism, ensuring the stability and safety of the spliced ​​guide rail pair during operation.

Description

Technical Field

[0001] The present invention relates to the technical field of guide rails, and in particular to a modular quick-installation guide rail pair. Background Art

[0002] Guideways, as key components in mechanical transmission systems, are widely used in various industrial equipment to achieve precise and stable linear motion. They typically consist of two parts: a guide rail and a slider. The guide rail provides a track for the slider, while the slider slides along the guide rail to achieve the desired linear displacement.

[0003] Traditional guide rail pairs usually adopt a fixed structure, which means that in actual applications, when it is necessary to extend the length of the guide rail or combine multiple sections of guide rails, it is often impossible to achieve quick connection directly due to the lack of a preset splicing mechanism. Users usually need to use complex auxiliary tools, such as special docking devices, positioning fixtures, etc., and perform tedious installation steps, including precise measurement, adjustment and alignment, and fixing bolts, to complete the splicing of the guide rails. This limitation not only greatly increases the workload of installation and adjustment, consuming more time and human resources, but also easily introduces installation errors, affecting the operating accuracy and stability of the guide rail pair. In addition, the fixed structure limits the applicability of the guide rail pair in various scenarios. For example, in application environments with limited space, complex layout, or frequent changes, it is difficult to meet the needs of rapid deployment, flexible adjustment, and efficient operation. This design is also not conducive to subsequent maintenance and upgrades, because any changes may require repeating the above-mentioned complex installation process. Summary of the Invention

[0004] The purpose of the present invention is to provide a modular quick-install guide rail pair. The invention can solve the problem that traditional guide rail pairs usually adopt a fixed structure, which leads to the problem that in actual applications, when it is necessary to extend the length of the guide rail or combine multiple sections of guide rails, it is often impossible to directly achieve quick connection due to the lack of a preset splicing mechanism.

[0005] The present invention provides a modular quick-install guide rail pair, comprising a guide rail and a slider, the slider being slidably connected to the guide rail, a side wall of the guide rail being provided with a slot for installation near the lower end surface, a blocking plate being fixedly provided at the center of the slot, and two gaps of a certain width being formed between the blocking plate and the left and right side walls of the slot, a groove being provided on the top surface of the guide rail, two positioning heads being fixedly provided on the other side wall of the guide rail, each positioning head being matched with a corresponding gap, a positioning mechanism being provided inside the slot of the guide rail, the positioning mechanism comprising an elastic clamping unit for fixing the positioning head and a driving unit for driving the elastic clamping unit.

[0006] Preferably, the elastic clamping unit includes a spring, a movable block, two pairs of pins, two baffles and two linkage blocks, one end of the spring is fixedly arranged on the inner side of the blocking plate, and a slot body for placing the spring is provided at the middle part of the movable block, the spring is located inside the slot body, and the other end of the spring is fixedly connected to the inner wall of the slot body, the two pairs of pins are respectively fixedly arranged on the top of the left and right sides of the movable block, each pair of pins includes two pins arranged in an oblique line, the two baffles are fixedly arranged on the top of the slot, and the two baffles maintain a certain gap with the bottom of the slot, two sliding grooves are provided on the inner side of the blocking plate, and a sliding groove is also provided on the left side of each baffle, the two linkage blocks are slidably connected with the blocking plate and the sliding grooves of the two baffles respectively, and an oblique hole matching each pair of pins is provided on each linkage block, and each pair of pins movably passes through the corresponding oblique hole.

[0007] Preferably, the driving unit includes a rotating shaft, an eccentric wheel and a handle, the rotating shaft is rotatably connected to the top and bottom of the slot respectively, and the top end of the rotating shaft extends to the groove on the top surface of the guide rail, the eccentric wheel is fixed on the rotating shaft, and the eccentric wheel is located on the right side of the movable block, and the handle is fixed on the top end of the rotating shaft.

[0008] Preferably, the handle is further provided with a pre-limiting unit for preliminarily limiting the rotating shaft.

[0009] Preferably, the pre-limiting unit includes a telescopic rod, a first magnet and a second magnet, one end of the telescopic rod is fixedly arranged on the handle, the first magnet is fixedly arranged on the right side of the groove, and the second magnet is fixedly arranged on the other end of the telescopic rod.

[0010] Preferably, the groove is further provided with a locking unit for further limiting the rotation shaft.

[0011] Preferably, the locking unit includes two movable shafts, a cover plate, a rebounder, a rebound rod and two limit rods, the two movable shafts are respectively rotatably connected to the front and rear sides of the groove, the cover plate is fixedly arranged between the two movable shafts, the rebounder is fixedly arranged on the left side of the groove, the rebound rod is fixedly arranged on the inner side of the cover plate, and the positions of the rebound rod and the rebounder correspond to each other, and the two limit rods are fixedly arranged on the inner side of the cover plate.

[0012] Preferably, a plurality of rectangular slots are provided on the inner side of each positioning head, and a plurality of rectangular blocks corresponding to the plurality of rectangular slots are fixedly provided on the outer side of each linkage block.

[0013] Preferably, the rotating shaft and the notch are connected via a bearing, the outer ring of the bearing is fixedly connected to the notch, and the inner ring of the bearing is interference fit with the rotating shaft.

[0014] Preferably, the distance between the two limiting rods is the same as the maximum width of the telescopic rod.

[0015] The present invention provides a modular quick-install guide rail pair through improvements. Compared with the existing technology, it has the following improvements and advantages: the present invention realizes the rapid splicing between two guide rails by opening a notch on the guide rail and integrating a positioning mechanism. This design enables the guide rail to be quickly spliced ​​at any length according to actual needs, greatly improving the flexibility and adaptability of use. During the splicing process, there is no need to perform tedious calibration operations, nor to rely on complex auxiliary tools and installation steps, which significantly improves the installation efficiency and reduces labor and time costs. In addition, the pre-limiting unit and locking unit introduced in the present invention provide a firm limiting guarantee for the drive shaft of the positioning mechanism, ensuring the stability and safety of the spliced ​​guide rail pair during operation. This limiting mechanism not only effectively prevents the guide rail pair from deflecting and shaking during movement, but also greatly enhances the overall rigidity and load-bearing capacity of the guide rail pair. At the same time, the design of the pre-limiting unit and locking unit simplifies the installation process, allowing users to complete the splicing and fixing of the guide rails more easily and quickly, further improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the axonometric structure of a modular quick-install guide rail pair in a spliced ​​state;

[0018] Figure 2 This is a schematic diagram of the axonometric structure of a modular quick-install guide rail pair in a separated state;

[0019] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of position A;

[0020] Figure 4 for Figure 2 Schematic diagram of the enlarged structure of position B;

[0021] Figure 5 This is a schematic diagram of the axonometric structure of a modular quick-install guide rail cover in a 90-degree flipped state;

[0022] Figure 6 for Figure 5Schematic diagram of the enlarged structure of the C position;

[0023] Figure 7 This is a schematic diagram of the axonometric structure of a modular quick-install guide rail cover and a movable shaft;

[0024] Figure 8 It is a schematic diagram of the top view of the positioning mechanism of a modular quick-install guide rail pair in a clamping state;

[0025] Figure 9 A schematic diagram of the top view of the positioning mechanism of a modular quick-install guide rail pair in a released state;

[0026] Figure 10 This is a schematic diagram of the axonometric structure of the movable block, pin shaft and linkage block of a modular quick-install guide pair.

[0027] Description of reference numerals:

[0028] 1. Guide rail; 2. Slider; 3. Notch; 4. Sealing plate; 5. Groove; 6. Positioning head; 7. Positioning mechanism; 71. Elastic clamping unit; 71-1. Spring; 71-2. Movable block; 71-3. Pin shaft; 71-4. Baffle; 71-5. Linkage block; 72. Drive unit; 72-1. Rotating shaft; 72-2. Eccentric wheel; 72-3. Handle; 8. Pre-limiting unit; 81. Telescopic rod; 82. First magnet; 83. Second magnet; 9. Locking unit; 91. Movable shaft; 92. Cover plate; 93. Rebounder; 94. Rebound rod; 95. Limiting rod; 10. Slot; 11. Block. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0032] See also Figure 1-10 The present invention provides a technical solution: a modular quick-install guide rail pair, comprising a guide rail 1 and a slider 2, the slider 2 is slidably connected to the guide rail 1, the guide rail 1 and the slider 2 are known core components of the guide rail pair 1, which is an existing device in this field, and the specific composition and structure are not introduced in detail. A slot 3 for installation is provided near the lower end surface of one side wall of the guide rail 1, and the slot 3 is long and extends along the length direction of the guide rail 1 body. A blocking plate 4 is fixedly provided at the center of the slot 3, and two gaps of a certain width are formed between the blocking plate 4 and the left and right side walls of the slot 3. The blocking plate 4 not only closes the center of the slot 3, but also serves as a support and positioning reference for subsequent installation components. The reserved gap ensures the subsequent positioning head 6 is smoothly inserted and positioned, a groove 5 is provided on the top surface of the guide rail 1, and the opening of the groove 5 provides installation space for subsequent components. Two positioning heads 6 are fixedly provided on the other side wall of the guide rail 1, and each positioning head 6 matches the corresponding gap. The positioning head 6 can smoothly enter and be fixed in the corresponding gap, thereby realizing fast and accurate positioning of the guide rail 1. A positioning mechanism 7 is provided inside the slot 3 of the guide rail 1, and the positioning mechanism 7 includes an elastic clamping unit 71 for fixing the positioning head 6 and a driving unit 72 for driving the elastic clamping unit 71. The elastic clamping unit 71 can realize stable clamping and release of the positioning head 6, and the driving unit 72 can accurately control the telescopic action of the elastic clamping unit 71, thereby realizing accurate fixation and release of the positioning head 6.

[0033] When the cam 71 is in the unlock state, the locking cam 71 is locked, and the locking cam 71 is locked. When the locking cam 75 is in the closed position, the locking cam 75 will be in the closed position, so that the two locking cams 71-3 can be locked.

[0034] Specifically, the driving unit 72 includes a rotating shaft 72-1, an eccentric wheel 72-2 and a handle 72-3. The rotating shaft 72-1 is rotatably connected to the top and bottom of the slot 3 respectively, and the top end of the rotating shaft 72-1 extends to the groove 5 on the top surface of the guide rail 1. The rotating shaft 72-1 can rotate stably on the slot 3 and the groove 5. The eccentric wheel 72-2 is fixedly arranged on the rotating shaft 72-1, and the eccentric wheel 72-2 is located on the right side of the movable block 71-2. The eccentric wheel 72-2 is located on the baffle 7 At the gap between 1-4 and the bottom of the slot 3, the eccentric wheel 72-2 cooperates with the movable block 71-2 of the elastic clamping unit 71. The eccentric wheel 72-2 can generate eccentric movement during rotation, thereby pushing the movable block 71-2 in the elastic clamping unit 71, and then enabling the two linkage blocks 71-5 to realize clamping and releasing actions, ensuring the stability and reliability of clamping. The handle 72-3 is fixedly set at the top of the rotating shaft 72-1, and the handle 72-3 is convenient for the operator to hold and rotate.

[0035] Guide Rail 1 in Spliced ​​State: When Guide Rail 1 is in spliced ​​state, eccentric wheel 72-2 does not apply pressure to movable block 71-2 or spring 71-1. In this state, spring 71-1 remains in its natural state, exerting no additional force on movable block 71-2. The spring 71-1 stabilizes movable block 71-2 and prevents it from moving. Linkage block 71-5 tightly engages and clamps movable block 71-2, ensuring the stability and precision of Guide Rail 1 during splicing.

[0036] Guide rail 1 separation state: When guide rail 1 needs to be separated, the eccentric wheel 72-2 starts to apply pressure to the movable block 71-2 and the spring 71-1. During the pressure application process, the eccentric wheel 72-2 transmits force to the movable block 71-2 through its eccentric structure, thereby compressing the spring 71-1. Until the movable block 71-2 rests on the blocking plate 4, the spring 71-1 can no longer be compressed. The spring 71-1 stores energy during the compression process and at the same time pushes the movable block 71-2 to displace. During the displacement process, the movable block 71-2 will drive the pin 71-3 to move. When the pin 71-3 moves, it will force the linkage block 71-5 with the inclined hole to move inward through the slide groove, eventually putting the linkage block 71-5 in a released state, allowing the guide rail 1 to be separated smoothly.

[0037] Specifically, the handle 72-3 is further provided with a pre-limiting unit 8 for preliminarily limiting the rotation shaft 72-1. In the above-mentioned driving unit 72, in order to further ensure the operating accuracy and safety of the rotation shaft 72-1, the handle 72-3 is provided with a pre-limiting unit 8 for preliminarily limiting the rotation shaft 72-1.

[0038] Specifically, the pre-limiting unit 8 includes a telescopic rod 81, a first magnet 82 and a second magnet 83. One end of the telescopic rod 81 is fixed on the handle 72-3, the first magnet 82 is fixed on the right side of the groove 5, and the second magnet 83 is fixed on the other end of the telescopic rod 81.

[0039] When the operator rotates the handle 72-3, the telescopic rod 81 fixed to the handle 72-3 moves accordingly, driving the second magnet 83 fixed at its other end to approach the first magnet 82 fixed on the right side of the groove 5. Due to the strong magnetic attraction between the two, when the second magnet 83 approaches the first magnet 82 to a certain distance, it will generate obvious resistance, thereby achieving preliminary positioning of the rotating shaft 72-1. This magnetic attraction limiting method is not only highly accurate and responsive, effectively avoiding excessive rotation of the rotating shaft 72-1, but also achieves precise preliminary positioning of the rotating shaft 72-1 through the clever combination of the telescopic rod 81 and the magnet, thereby improving the installation and adjustment accuracy of the guide rail 1 pair. The pre-limiting unit 8 is only used when the guide rail 1 is in the spliced ​​state.

[0040] Specifically, the groove 5 is further provided with a locking unit 9 for further limiting the position of the rotating shaft 72-1. The locking unit 9 can provide a more stable and reliable limiting effect on the basis of the pre-limiting effect, ensuring that the locking unit 9 can maintain the position of the rotating shaft 72-1 when the linkage block 71-5 is in the clamping state.

[0041] Specifically, the locking unit 9 includes two movable shafts 91, a cover plate 92, a rebounder 93, a rebound rod 94 and two limit rods 95. The two movable shafts 91 are rotatably connected to the front and rear sides of the groove 5 respectively. The cover plate 92 is fixedly arranged between the two movable shafts 91. The cover plate 92 can be flipped in the groove 5 through the movable shaft 91. The rebounder 93 is fixedly arranged on the left side of the groove 5. The rebound rod 94 is fixedly arranged on the inner side of the cover plate 92, and the rebound rod 94 corresponds to the position of the rebounder 93. The rebounder 93 and the rebound rod 94 are existing components with a simple structure and reliable performance, which can enable the cover plate 92 to cover or open the groove 5. The specific operation method is: press once to open the cover 92, so that the cover 92 is flipped to the outside of the groove 5; press again to close the cover 92, so that the cover 92 is flipped to the inside of the groove 5, covering the groove 5. Two limit rods 95 are fixedly arranged on the inner side of the cover 92. When the cover 92 is closed, the two limit rods 95 are located on both sides of the telescopic rod 81, thereby limiting and fixing the telescopic rod 81, effectively avoiding the rotation of the rotating shaft 72-1 during the clamping process, and ensuring the stability of the positioning mechanism 7 during the clamping process.

[0042] Specifically, each positioning head 6 is provided with a plurality of rectangular slots 10 on its inner side, and each linkage block 71-5 is fixedly provided with a plurality of rectangular blocks 11 corresponding to the plurality of rectangular slots 10 on its outer side. When the guide rail 1 is in the splicing state, the rectangular blocks 11 on the linkage block 71-5 naturally insert into the rectangular slots 10 in the positioning head 6. The addition of the slots 10 and blocks 11 to the aforementioned elastic clamping unit 71 further improves the stability of the guide rail 1 during splicing.

[0043] Specifically, the shaft 72-1 is connected to the notch 3 via a bearing, the outer ring of the bearing is fixedly connected to the notch 3, and the inner ring of the bearing is interference-fitted with the shaft 72-1. The bearing improves the stability of the shaft 72-1 during rotation.

[0044] Specifically, the distance between the two limiting rods 95 is the same as the maximum width of the telescopic rod 81. Ensure that when the cover plate 92 is in the closed state, the limiting rods 95 can directly contact the two side surfaces of the telescopic rod 81, thereby achieving accurate positioning of the telescopic rod 81.

[0045] Working principle:

[0046] Initial State and Preparation: In the initial state of the positioning mechanism 7, the linkage block 71-5 remains clamped. To assemble the guide rail 1, the cover plate 92 is first pressed. With the help of the rebound lever 94 and the rebounder 93, the cover plate 92 pops out and flips 90 degrees, opening the groove 5 and exposing the handle 72-3 and the pre-limiting unit 8.

[0047] Pre-limit release and pressure application: Turning the handle 72-3 moves the second magnet 83 on the telescopic rod 81 away from the first magnet 82 on the groove 5, releasing the pre-limit. Continuing to turn the handle 72-3, the eccentric wheel 72-2 rotates, transmitting the force generated by its eccentric structure to the position below the movable block 71-2.

[0048] The movable block 71-2 and the spring 71-1 work together: the movable block 71-2 compresses the spring 71-1 under the action of force until the movable block 71-2 abuts against the blocking plate 4. The spring 71-1 is compressed and stores energy in this process. As the spring 71-1 is compressed, the movable block 71-2 is displaced.

[0049] The linkage block 71-5 is released: the displacement of the movable block 71-2 drives the pin shaft 71-3 connected thereto to move, and the movement of the pin shaft 71-3 forces the linkage block 71-5 with the oblique hole to move inward through the slide groove until the linkage block 71-5 reaches the released state.

[0050] Splicing of guide rails 1: At this time, insert the two positioning heads 6 of the other guide rail 1 into the gaps on both sides of the blocking plate 4, and then rotate the handle 72-3 in the opposite direction to make the eccentric wheel 72-2 cancel the pressure on the movable block 71-2. The movable block 71-2 returns to its original position under the elastic restoring force of the spring 71-1, and the pin 71-3 moves synchronously. The movement of the pin 71-3 forces the linkage block 71-5 with the inclined hole to move outward through the slide groove, so that the block 11 on the linkage block 71-5 enters the slot 10 of the positioning head 6, thereby realizing the precise splicing of the guide rails 1.

[0051] Pre-limiting and closing the cover 92: After the splicing is completed, the second magnet 83 on the telescopic rod 81 re-attracts the first magnet 82 during the rotation process, completing the pre-limiting. Finally, press the cover 92 again to connect the rebound rod 94 with the rebounder 93, and the cover 92 closes the groove 5.

[0052] The locking unit 9 is limited and fixed: At this time, the two limit rods 95 are located on both sides of the telescopic rod 81, which limit and fix the telescopic rod 81, effectively preventing the rotating shaft 72-1 from rotating during the clamping process, thereby ensuring the stability and reliability of the positioning mechanism 7 during the clamping process.

[0053] Separation of the guide rail 1: When the guide rail 1 is separated, the linkage block 71-5 releases the positioning head 6 through the reverse operation steps, thereby achieving smooth separation of the guide rail 1.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A modular quick-install guide rail pair, comprising a guide rail (1) and a slider (2), wherein the slider (2) is slidably connected to the guide rail (1), characterized in that: A notch (3) for installation is provided on one side wall of the guide rail (1) near the lower end surface, a blocking plate (4) is fixedly provided at the center of the notch (3), and two gaps of a certain width are formed between the blocking plate (4) and the left and right side walls of the notch (3), a groove (5) is provided on the top surface of the guide rail (1), and two positioning heads (6) are fixedly provided on the other side wall of the guide rail (1), each positioning head (6) matches a corresponding gap, a positioning mechanism (7) is provided inside the notch (3) of the guide rail (1), and the positioning mechanism (7) includes an elastic clamping unit (71) for fixing the positioning head (6) and a driving unit (72) for driving the elastic clamping unit (71); The elastic clamping unit (71) comprises a spring (71-1), a movable block (71-2), two pairs of pins (71-3), two baffles (71-4) and two linkage blocks (71-5). One end of the spring (71-1) is fixedly arranged on the inner side of the blocking plate (4). A slot for accommodating the spring (71-1) is provided at the middle portion of the movable block (71-2). The spring (71-1) is located inside the slot, and the other end of the spring (71-1) is fixedly connected to the inner wall of the slot. The two pairs of pins (71-3) are respectively fixedly arranged on the top of the left and right sides of the movable block (71-2). Each pair of pins (71-3) is fixedly arranged on the top of the left and right sides of the movable block (71-2). 3) comprising two pin shafts (71-3) arranged in an oblique line, the two baffles (71-4) being fixedly arranged at the top of the slot (3), and the two baffles (71-4) maintaining a certain gap with the bottom of the slot (3), the inner side of the blocking plate (4) being provided with two slide grooves, the left side of each baffle (71-4) also being provided with a slide groove, the two linkage blocks (71-5) being respectively slidably connected with the blocking plate (4) and the slide grooves of the two baffles (71-4), each linkage block (71-5) being provided with an oblique hole matching each pair of pin shafts (71-3), and each pair of pin shafts (71-3) being movable through the corresponding oblique hole; The driving unit (72) comprises a rotating shaft (72-1), an eccentric wheel (72-2) and a handle (72-3); The handle (72-3) is also provided with a pre-limiting unit (8) for initially limiting the rotating shaft (72-1); The pre-limiting unit (8) comprises a telescopic rod (81), a first magnet (82) and a second magnet (83).

2. A modular quick-install guide rail pair according to claim 1, characterized in that: The rotating shaft (72-1) is rotatably connected to the top and bottom of the slot (3), and the top end of the rotating shaft (72-1) extends to the groove (5) on the top surface of the guide rail (1). The eccentric wheel (72-2) is fixedly arranged on the rotating shaft (72-1), and the eccentric wheel (72-2) is located on the right side of the movable block (71-2). The handle (72-3) is fixedly arranged on the top end of the rotating shaft (72-1).

3. A modular quick-install guide rail pair according to claim 2, characterized in that: One end of the telescopic rod (81) is fixedly arranged on the handle (72-3), the first magnet (82) is fixedly arranged on the right side of the groove (5), and the second magnet (83) is fixedly arranged on the other end of the telescopic rod (81).

4. A modular quick-install guide rail pair according to claim 3, characterized in that: The groove (5) is also provided with a locking unit (9) for further limiting the rotation shaft (72-1).

5. The modular quick-install guide rail pair according to claim 4, characterized in that: The locking unit (9) comprises two movable shafts (91), a cover plate (92), a rebounder (93), a rebound rod (94) and two limiting rods (95). The two movable shafts (91) are rotatably connected to the front and rear sides of the groove (5) respectively. The cover plate (92) is fixedly arranged between the two movable shafts (91). The rebounder (93) is fixedly arranged on the left side of the groove (5). The rebound rod (94) is fixedly arranged on the inner side of the cover plate (92), and the positions of the rebound rod (94) and the rebounder (93) correspond to each other. The two limiting rods (95) are fixedly arranged on the inner side of the cover plate (92).

6. The modular quick-install guide rail pair according to claim 5, characterized in that: A plurality of rectangular slots (10) are provided on the inner side of each positioning head (6), and a plurality of rectangular blocks (11) corresponding to the plurality of rectangular slots (10) are fixedly provided on the outer side of each linkage block (71-5).

7. The modular quick-install guide rail pair according to claim 6, characterized in that: The rotating shaft (72-1) and the notch (3) are connected via a bearing, the outer ring of the bearing is fixedly connected to the notch (3), and the inner ring of the bearing is interference-fitted to the rotating shaft (72-1).

8. The modular quick-install guide rail pair according to claim 7, characterized in that: The distance between the two limiting rods (95) is the same as the maximum width of the telescopic rod (81).

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