A detachable silent hanging rail extremely narrow sliding door

Abstract

The present invention discloses a detachable silent hanging rail ultra-narrow sliding door, comprising a mounting frame, the mounting frame is fixed above the door opening wall, the hanging rail seat is installed in the hanging rail frame, the center position of the hanging rail seat is threadedly installed with a first screw, the bottom of the fixing sleeve is threadedly connected with a second screw, the positioning seat is fixed to the top inside the hanging rail frame, gears are arranged on both sides of the guide plate, and the gear embedded bearing is installed in the positioning seat, a positioning plate is arranged on the outside of the gear, a first ceramic tile is embedded and fixed on the bottom surface of the positioning plate, and the positioning plate is located above the hanging rail wheel, and a second ceramic tile is embedded and fixed on the side of the depression in the middle of the hanging rail wheel, and an inner groove is embedded in the middle of the hanging rail wheel. The detachable silent hanging rail ultra-narrow sliding door is convenient for the easy disassembly and replacement of the hanging rail wheel that is easily damaged, and at the same time, non-contact damping is achieved to avoid damage to the door when the sliding speed is too fast.

Description

Technical Field

[0001] The invention relates to the technical field of hanging rail sliding doors, in particular to a detachable silent hanging rail extremely narrow sliding door. Background Art

[0002] Sliding doors are mainly used for partitions in indoor kitchens, hallways and other locations. There are two main types of sliding doors: lower track sliding doors and hanging track sliding doors. The track of the hanging track sliding door is installed above the door opening, and the bottom is flat, which can effectively avoid obstruction to walking and dust accumulation, reduce friction and thus reduce noise during movement. It has become the mainstream sliding door in indoor buildings. However, the existing hanging track sliding door has the following problems when in use:

[0003] Most hanging rail sliding doors have spaces and passages opened on the top and side walls of the door opening, and are installed in conjunction with door frames, hanging rails and external shields. Since most hanging rail sliding doors move via rollers, most of the weight of the entire door is concentrated on the rollers, which can easily cause wear and tear after long-term use, and can cause jamming, noise and the like. Existing hanging rail sliding doors are not convenient for convenient replacement of hardware such as rollers. In traditional hanging rail sliding doors, the sliding doors and frames need to be disassembled, which is troublesome to operate and affects the quality and appearance of subsequent use. At the same time, most hanging rail sliding doors require manual pushing. If there are children or adults at home, the pushing force is too large, which can easily cause collisions. In the prior art, resistance is adjusted by adding damping, but it is not convenient to achieve contactless damping speed reduction. During traditional use, resistance always exists, affecting the smoothness of the sliding door.

[0004] In view of the above problems, it is urgent to carry out innovative design based on the original hanging rail sliding door. Summary of the invention

[0005] The purpose of the present invention is to provide a detachable silent hanging rail ultra-narrow sliding door to solve the problem that the existing hanging rail sliding door proposed in the above background technology is not convenient for convenient replacement of hardware such as rollers, and it is not convenient to achieve contactless damping and speed reduction.

[0006] To achieve the above object, the present invention provides the following technical solution: a detachable silent hanging rail extremely narrow sliding door, comprising a mounting frame, the mounting frame is fixed above the door opening wall, and a hanging rail frame is fixed inside the mounting frame;

[0007] Also includes:

[0008] A hanging rail seat, the hanging rail seat is installed in the hanging rail frame, and hanging rail wheels are installed on the outer sides of the front and rear ends of the hanging rail seat, a first screw is threadedly installed at the center of the hanging rail seat, and a fixing sleeve is provided on the bottom thread sleeve of the first screw, and the fixing sleeve is located below the hanging rail seat, a second screw is threadedly connected to the bottom of the fixing sleeve, and a sliding door fixing piece is threadedly connected to the bottom of the second screw, and a sliding door is fixed to the bottom of the sliding door fixing piece, and a movable positioning piece is installed at the bottom of the sliding door, and the movable positioning piece is fixed to the bottom position of the cavity of the side wall of the door opening;

[0009] A positioning seat, wherein the positioning seat is fixed to the top of the interior of the hanging rail frame, and the positioning seat is located above the hanging rail seat, and a guide plate is connected to the cavity at the bottom of the middle part of the positioning seat through a spring, gears are arranged on both sides of the guide plate, and the gear embedded bearing is installed in the positioning seat, a positioning plate is arranged on the outside of the gear, and the positioning plate is vertically slidably installed in the cavity at the corresponding position of the bottom of the positioning seat, and tooth blocks are fixed to the inner side edge of the positioning plate and the outer side edge of the guide plate, a first magnetic sheet is embedded and fixed on the bottom surface of the positioning plate, and the positioning plate is located above the hanging rail wheel, and a second magnetic sheet is embedded and fixed on the side of the recess in the middle part of the hanging rail wheel, an inner groove is embedded in the middle part of the hanging rail wheel, and an iron ball is placed in the inner groove.

[0010] Preferably, both sides of the hanging rail seat are protruding structures consisting of a long inclined surface and a short inclined surface, and the long inclined surfaces and the short inclined surfaces on both sides of the hanging rail seat are relative and parallel, and the hanging rail wheels at both ends of the hanging rail seat are protrudingly installed in the notch of the short inclined surface, and the vertical distance between the long inclined surfaces on both sides of the hanging rail seat is smaller than the width of the opening below the hanging rail frame. The hanging rail seat cooperates with the hanging rail wheels to slide on the hanging rail frame, and the hanging rail seat can be taken out from the hanging rail frame for replacement only by tilting the hanging rail seat.

[0011] Preferably, the middle part of the rail hanging wheel is designed with a concave arc structure, and the end point of the concave position in the middle part of the rail hanging wheel is concave-convex matched with the corresponding position of the bottom of the rail hanging frame, which reduces the contact area between the rail hanging wheel and the rail hanging frame, reduces wear, and reduces noise.

[0012] Preferably, the guide plate slides elastically in contact with the bottom of the positioning seat through a spring, and the bottom of the guide plate is an arc-shaped structure located on the top of the first screw, and a guide ball is embedded and rotatably installed on the top of the first screw, and the springs are evenly spaced on the guide plate. The first screw is rotated and ejected from the hanging rail seat, and the guide plate is lifted up by the guide ball.

[0013] Preferably, the bottom of the positioning plate is designed as an arc-shaped raised structure, and the arc-shaped structure at the bottom of the positioning plate is parallel to the recessed position in the middle of the rail wheel, and the bottom of the positioning plate does not contact the recessed position in the middle of the rail wheel, and the rail wheel is assisted in positioning by the bottom of the positioning plate.

[0014] Preferably, the tooth blocks are distributed in groups at equal intervals on the guide plate and the positioning plate, and the tooth blocks are meshed with the gears, and the positioning plate is in a "Z"-shaped structure with the middle perpendicular to the two sides and slides within the positioning seat. The guide plate moves up and cooperates with the tooth blocks and gears to drive the positioning plate to move down.

[0015] Preferably, the second magnetic sheets are distributed at equal angles on the rail hanging wheel, and two groups of second magnetic sheets are symmetrically arranged about the vertical center axis of the rail hanging wheel, and the second magnetic sheets repel each other magnetically, and the first magnetic sheets are distributed at equal intervals at the bottom of the positioning plate. When the positioning plate moves downward, non-contact auxiliary positioning is performed by the repulsive force between the second magnetic sheets and the first magnetic sheets.

[0016] Preferably, the inner grooves are distributed vertically at equal angles in the rail wheel, and the length of the inner grooves is greater than the diameter of the iron ball, and rubber pads are laid on the upper and lower ends of the inner grooves. When the sliding door moves too fast and causes the speed of the rail wheel to be too fast, the iron ball in the rail wheel is thrown to a position close to the first magnetic sheet under the action of centrifugal force. The suction force of the first magnetic sheet on the iron ball increases the resistance to the rail wheel without contact, thereby achieving damping and speed reduction. The use of rubber pads can buffer the movement of the iron ball and reduce noise.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention is provided with a detachable mechanism, by rotating the bottom of the first screw into the fixed sleeve, the top of the first screw is retracted into the hanging rail seat, so that the top of the first screw loses the lifting force on the guide plate, and under the action of the spring, the guide plate moves downward, and cooperates with the guidance of the tooth block and the gear to make the positioning plate move up and lose the restricting effect on the hanging rail wheel, and at the same time, the second screw is rotated into the fixed sleeve, so that the second screw is disengaged from the sliding door fixing piece, and at this time, the fixing sleeve is pushed upward and then rotated, driving the hanging rail wheel to disengage from the hanging cabinet frame and causing the hanging rail seat to rotate, and the two long inclined surfaces on the side of the hanging rail seat remain parallel to the hanging rail frame. At this time, the hanging rail wheel is rotated to the opening position at the bottom of the hanging rail frame, and then the fixing sleeve is pulled downward so that the hanging rail seat and The hanging rail frame can be detached to complete the disassembly and subsequent replacement of the hanging rail seat. In this process, there is no need to disassemble the installation frame, the hanging rail frame and the sliding door, and the worn hanging rail seat and the hanging rail wheel can be disassembled, which is easy to operate. The hanging rail parts in the traditional technology are mostly slid in through the end of the hanging rail frame in advance, and the disassembly process also needs to slide out from the end. However, after the sliding door is installed, the end of the hanging rail frame is in a closed state. At this time, the sliding door and the installation frame need to be disassembled, which is very troublesome and requires special tools. However, in the present invention, only the screw rod needs to be rotated, and the main worn hanging rail seat and the hanging rail wheel can be taken out for replacement through operations such as moving up, rotating and offsetting. The operation is convenient and there is no damage to the sliding door.

[0019] 2. The present invention is provided with a contactless damping speed reduction mechanism. After the installation of the hanging rail seat, the first screw is rotated so that the first screw extends from the top of the hanging rail seat, and cooperates with the guide ball to drive the guide plate to move up, and drives the positioning plate to move down through the tooth block and the gear. The "Z"-shaped structure of the positioning plate can be limited, so that after the positioning plate moves down to the final distance, the bottom of the positioning plate will not directly contact the hanging rail wheel, and at the same time, the distance of the first magnetic sheet at the bottom of the positioning plate can generate a repulsive force on the second magnetic sheet. Through the unique design of the hanging rail wheel, the concave structure in the middle of the hanging rail wheel, and the cooperation with the hanging rail frame, a structure similar to a train track is adopted, so that linear contact is adopted between the hanging rail wheel and the hanging rail frame. Compared with the traditional inclined contact structure, the contact area between the hanging cabinet wheel and the hanging rail frame is reduced. On the one hand, wear is reduced, and on the other hand, noise is reduced by reducing the contact surface and friction resistance. At the same time, The positioning plate is arranged at the top of the wheel, and the first magnetic sheet at the bottom repels the second magnetic sheets on both sides of the middle part of the hanging rail wheel, which can further maintain the stability of the hanging rail wheel. At the same time, when the sliding door moves too fast and causes the hanging rail wheel to rotate too fast, the iron ball will be thrown to the outside of the inner groove under the action of centrifugal force. At this time, the first magnetic sheet will magnetically adsorb the iron ball at the high point position, and increase the resistance to the rotation of the hanging rail wheel through suction, so as to achieve the purpose of slowing down its rotation speed, and then achieve the effect of slowing down the sliding door, effectively avoiding the situation where the sliding door is damaged by excessive external force. When the rotation speed of the hanging rail wheel is reduced, the centrifugal force is reduced, and the iron ball at the high point position falls back, which will not affect the rotation of the hanging rail wheel. In traditional technology, damping push and pull is required, and the damping effect is mostly achieved by increasing the contact surface. On the one hand, the friction force is increased and the wear degree is increased, and at the same time, the increased friction will also increase the noise, and the use effect is poor.

[0020] 3. In summary, the present invention can conveniently replace parts such as the hanging rail wheels that are prone to wear while maintaining the overall stability of the sliding door, thereby increasing the service life. At the same time, the use of train track-type contact rolling can reduce wear and noise. Furthermore, by utilizing the installation of the hanging rail seat, the positioning plate can be moved downward, and the first magnetic sheet and the second magnetic sheet can be used to perform contactless auxiliary positioning of the hanging rail wheel to avoid displacement. At the same time, the suction force of the first magnetic sheet on the iron ball is utilized again in conjunction with the centrifugal force to perform contactless damping and deceleration of the hanging rail wheel at a faster speed to protect the sliding door. At the same time, during normal sliding, the iron ball and the first magnetic sheet will not be affected by resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the front cross-section structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the top view of the structure of the hanging rail seat of the present invention;

[0023] Figure 3 It is a schematic diagram of the top view structure of the guide plate of the present invention;

[0024] Figure 4 This is a bottom view of the structure of the positioning plate of the present invention;

[0025] Figure 5 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0026] Figure 6 It is a schematic diagram of the side sectional structure of the present invention.

[0027] In the figure: 1. mounting frame; 2. hanging rail frame; 3. hanging rail seat; 4. hanging rail wheel; 5. first screw; 51. guide ball; 6. fixing sleeve; 7. second screw; 8. sliding door fixing piece; 9. sliding door; 10. movable positioning piece; 11. positioning seat; 12. spring; 13. guide plate; 14. gear; 15. positioning plate; 16. gear block; 17. first magnetic sheet; 18. second magnetic sheet; 19. inner groove; 20. iron ball. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-6 The present invention provides a technical solution: a detachable silent hanging rail extremely narrow sliding door, a mounting frame 1, a hanging rail frame 2, a hanging rail seat 3, a hanging rail wheel 4, a first screw 5, a guide ball 51, a fixing sleeve 6, a second screw 7, a sliding door fixing member 8, a sliding door 9, a movable positioning member 10, a positioning seat 11, a spring 12, a guide plate 13, a gear 14, a positioning plate 15, a tooth block 16, a first magnetic sheet 17, a second magnetic sheet 18, an inner groove 19 and an iron ball 20; Example

[0030] See also Figure 1-4, including an installation frame 1, the installation frame 1 is fixed above the door opening wall, and a hanging rail frame 2 is fixed inside the installation frame 1; a hanging rail seat 3 is installed in the hanging rail frame 2, and hanging rail wheels 4 are installed on the outer sides of the front and rear ends of the hanging rail seat 3, a first screw rod 5 is threadedly installed at the center position of the hanging rail seat 3, and a fixing sleeve 6 is threadedly sleeved at the bottom of the first screw rod 5, and the fixing sleeve 6 is located below the hanging rail seat 3, a second screw rod 7 is threadedly connected at the bottom of the fixing sleeve 6, and a sliding door fixing piece 8 is threadedly connected at the bottom of the second screw rod 7, and a sliding door 9 is fixed at the bottom of the sliding door fixing piece 8, and a movable positioning piece 10 is installed at the bottom of the sliding door 9, and the movable positioning piece 10 is fixed to the bottom position of the cavity of the side wall of the door opening; hanging rail Both sides of the seat 3 are convex structures composed of a long inclined surface and a short inclined surface, and the long inclined surfaces and short inclined surfaces on both sides of the hanging rail seat 3 are relatively and parallel, and the hanging rail wheels 4 at both ends of the hanging rail seat 3 are protrudingly installed in the notch of the short inclined surface, and the vertical distance between the long inclined surfaces on both sides of the hanging rail seat 3 is smaller than the width of the opening at the bottom of the hanging rail frame 2, the middle part of the hanging rail wheel 4 is designed with an inwardly concave arc structure, and the end point of the inwardly concave position of the middle part of the hanging rail wheel 4 is concavely matched with the corresponding position at the bottom of the hanging rail frame 2; through the unique design of the hanging rail seat 3, it is only necessary to rotate the hanging rail seat 3 to remove it from between the hanging rail frame 2 and the sliding door fixing piece 8, and the entire sliding door assembly needs to be disassembled, which is easy to operate and protects the hanging rail sliding door as a whole; Example

[0031] See also Figure 1 and Figure 3-6, positioning seat 11, the positioning seat 11 is fixed to the top of the interior of the hanging rail frame 2, and the positioning seat 11 is located above the hanging rail seat 3, and the cavity at the bottom of the middle of the positioning seat 11 is connected to a guide plate 13 through a spring 12, and gears 14 are arranged on both sides of the guide plate 13, and the gear 14 is installed in the positioning seat 11 with an embedded bearing, and a positioning plate 15 is arranged on the outside of the gear 14, and the positioning plate 15 is vertically slidably installed in the cavity at the corresponding position of the bottom of the positioning seat 11, and the inner side edge of the positioning plate 15 and the outer side edge of the guide plate 13 are fixed with tooth blocks 16, and the bottom surface of the positioning plate 15 is embedded and fixed There is a first magnetic sheet 17, and the positioning plate 15 is located above the hanging rail wheel 4, and the side of the recessed part in the middle of the hanging rail wheel 4 is embedded with a second magnetic sheet 18, and the inner groove 19 is embedded in the middle of the hanging rail wheel 4, and an iron ball 20 is placed in the inner groove 19. The guide plate 13 slides elastically at the bottom of the positioning seat 11 through the spring 12, and the bottom of the guide plate 13 is an arc-shaped structure located at the top of the first screw 5, and the top of the first screw 5 is embedded and rotatably installed with a guide ball 51, and the springs 12 are evenly spaced on the guide plate 13. The bottom of the positioning plate 15 is designed with an arc-shaped convex structure. , and the bottom arc structure of the positioning plate 15 is parallel to the concave position in the middle of the hanging rail wheel 4, and the bottom of the positioning plate 15 does not contact the concave position in the middle of the hanging rail wheel 4, the tooth blocks 16 are distributed in groups at equal intervals on the guide plate 13 and the positioning plate 15, and the tooth blocks 16 are meshed with the gear 14, and the positioning plate 15 is a "Z"-shaped structure with the middle perpendicular to the two sides and limitedly slides in the positioning seat 11, the second magnetic pieces 18 are distributed at equal angles on the hanging rail wheel 4, and the second magnetic pieces 18 are symmetrically arranged in two groups about the vertical center axis of the hanging rail wheel 4, and the second magnetic pieces 18 and the first magnetic pieces 17 are magnetically repelled, and The first magnetic pieces 17 are evenly spaced at the bottom of the positioning plate 15, the inner grooves 19 are vertically and evenly distributed in the rail wheel 4, and the length of the inner grooves 19 is greater than the diameter of the iron ball 20, and rubber pads are laid on both ends of the inner grooves 19; the first screw 5 rotates upward, and cooperates with the guide plate 13, the gear block 16, and the gear 14 to drive the positioning plate 15 to move downward, and cooperates with the first magnetic piece 17 and the second magnetic piece 18 to perform contactless auxiliary positioning on the top of the rail wheel 4, and at the same time cooperates with the suction force generated by the first magnetic piece 17 when the iron ball 20 approaches, to provide resistance to the rail wheel 4 with too fast rotation speed, and perform contactless damping and deceleration.

[0032] Working principle: When using this detachable silent hanging rail ultra-narrow sliding door, Figure 1-4In the process, when it is necessary to disassemble the hanging rail seat 3 and the hanging rail wheel 4, the sliding door 9 is first pulled out and a cushion block is added at the bottom, and then the first screw rod 5 and the second screw rod 7 are rotated so that the ends of the first screw rod 5 and the second screw rod 7 enter the fixing sleeve 6, so that the second screw rod 7 is separated from the sliding door fixing piece 8. At this time, the corresponding positions of the sliding door fixing piece 8 and the sliding door 9 lose the pulling force, and when the first screw rod 5 is rotated into the fixing sleeve 6, the first screw rod 5 will shrink into the hanging rail seat 3 and lose the resistance to the guide plate 13, so that the guide plate 13 moves downward under the action of the spring 12, and the meshing of the tooth block 16 and the gear 14 is coordinated to make the positioning plate 15 move up, so that the top space of the hanging rail wheel 4 is made free. After that, the fixing sleeve 6 is pushed upwards, driving the hanging rail seat 3 and the hanging rail wheel 4 to move upwards, and then the fixing sleeve 6 is rotated, and the hanging rail seat 3 is driven to rotate through the first screw rod 5, so that the long inclined surface on the hanging rail seat 3 is parallel to the bottom cavity of the hanging rail frame 2. At this time, the hanging rail wheel 4 is also rotated to the bottom cavity position of the hanging rail frame 2, and then the fixing sleeve 6 is held to rotate the hanging rail seat 3 forward or backward, and then rotated outward to take out the hanging rail seat 3 for disassembly and replacement, and the new hanging rail seat 3 is fixed on the first screw rod 5. The installation is completed according to the above operation in reverse. In the known technology, two hanging rail seats 3 are provided on the sliding door 9, and then the two hanging rail seats 3 can be disassembled and installed separately;

[0033] Then, if Figure 1 and Figure 3-6 In the process, after the installation is completed, the first screw rod 5 rotates and moves upward to cooperate with the guide ball 51 to lift the guide plate 13. At this time, the positioning plate 15 moves down and is located above the hanging rail wheel 4. The repulsive force of the first magnetic plate 17 and the second magnetic plate 18 can assist in positioning the hanging rail wheel 4 to prevent the hanging rail wheel 4 from shifting left and right. At the same time, when the external force pushes the sliding door 9 too fast, the rotation speed of the hanging rail wheel 4 is also fast. The centrifugal force generated will throw the iron ball 20 to the outside of the inner groove 19. The iron ball 20 at the high point is close to the first magnetic plate 17 at the bottom of the positioning plate 15. The magnetic adsorption force of the first magnetic plate 17 on the iron ball 20 is used to provide resistance to the rotation of the hanging rail wheel 4, thereby slowing down the rotation of the hanging rail wheel 4 and achieving the effect of contactless damping and deceleration. The rubber pads arranged at both ends of the inner groove 19 will also buffer the movement of the iron ball 20 to avoid noise.

[0034] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. In the description of the present invention, unless otherwise specified, "multiple" means two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A detachable silent hanging rail ultra-narrow sliding door, comprising a mounting frame (1), wherein the mounting frame (1) is fixed above a door opening wall, and a hanging rail frame (2) is fixed inside the mounting frame (1); Features: Also includes: A hanging rail seat (3), wherein the hanging rail seat (3) is installed in a hanging rail frame (2), and hanging rail wheels (4) are installed on the outer sides of both front and rear ends of the hanging rail seat (3), a first screw rod (5) is threadedly installed through the center position of the hanging rail seat (3), and a fixing sleeve (6) is provided on the bottom thread sleeve of the first screw rod (5), and the fixing sleeve (6) is located below the hanging rail seat (3), a second screw rod (7) is threadedly connected to the bottom of the fixing sleeve (6), and a sliding door fixing member (8) is threadedly connected to the bottom of the second screw rod (7), and a sliding door (9) is fixed to the bottom of the sliding door fixing member (8), and a movable positioning member (10) is installed on the bottom of the sliding door (9), and the movable positioning member (10) is fixed to the bottom position of the cavity of the side wall of the door opening; A positioning seat (11), wherein the positioning seat (11) is fixed to the top of the interior of the hanging rail frame (2), and the positioning seat (11) is located above the hanging rail seat (3), and a guide plate (13) is connected to the cavity at the bottom of the middle part of the positioning seat (11) through a spring (12), gears (14) are arranged on both sides of the guide plate (13), and the embedded bearing of the gear (14) is installed in the positioning seat (11), and a positioning plate (15) is arranged on the outer side of the gear (14), and the positioning plate (15) is vertically slidably installed on the positioning seat (11). A tooth block (16) is fixed to the inner side edge of the positioning plate (15) and the outer side edge of the guide plate (13) in a cavity at a corresponding position of the bottom of the seat (11); a first magnetic piece (17) is embedded and fixed to the bottom surface of the positioning plate (15); the positioning plate (15) is located above the rail hanging wheel (4); a second magnetic piece (18) is embedded and fixed to the side edge of the recessed portion in the middle of the rail hanging wheel (4); an inner groove (19) is embedded in the middle of the rail hanging wheel (4), and an iron ball (20) is placed in the inner groove (19).

2. The detachable silent hanging rail extremely narrow sliding door according to claim 1, characterized in that: Both sides of the hanging rail seat (3) are protruding structures consisting of a long inclined surface and a short inclined surface, and the long inclined surfaces and the short inclined surfaces on both sides of the hanging rail seat (3) are relatively and parallel to each other, and the hanging rail wheels (4) at both ends of the hanging rail seat (3) are protrudingly installed at the notch of the short inclined surface, and the vertical distance between the long inclined surfaces on both sides of the hanging rail seat (3) is less than the width of the opening below the hanging rail frame (2).

3. The detachable silent hanging rail extremely narrow sliding door according to claim 1, characterized in that: The middle portion of the rail hanging wheel (4) is designed to be an inwardly concave arc structure, and the end point of the inwardly concave position of the middle portion of the rail hanging wheel (4) is concavely matched with the corresponding position of the bottom of the rail hanging frame (2).

4. The detachable silent hanging rail extremely narrow sliding door according to claim 1, characterized in that: The guide plate (13) slides elastically in contact with the bottom of the positioning seat (11) via the spring (12), and the bottom of the guide plate (13) is in an arc-shaped structure and is located on the top of the first screw rod (5), and a guide ball (51) is rotatably mounted on the top of the first screw rod (5), and the springs (12) are evenly spaced on the guide plate (13).

5. The detachable silent hanging rail extremely narrow sliding door according to claim 1, characterized in that: The bottom of the positioning plate (15) is designed as an arc-shaped convex structure, and the arc-shaped structure of the bottom of the positioning plate (15) is parallel to the middle recessed position of the hanging rail wheel (4), and the bottom of the positioning plate (15) does not contact the middle recessed position of the hanging rail wheel (4).

6. The detachable silent hanging rail extremely narrow sliding door according to claim 1, characterized in that: The tooth blocks (16) are distributed in groups at equal intervals on the guide plate (13) and the positioning plate (15), and the tooth blocks (16) are meshed with the gears (14), and the positioning plate (15) is in a "Z"-shaped structure with the middle perpendicular to the two sides and slides within the positioning seat (11) in a limited position.

7. The detachable silent hanging rail extremely narrow sliding door according to claim 1, characterized in that: The second magnetic sheets (18) are distributed at equal angles on the rail hanging wheel (4), and two groups of second magnetic sheets (18) are symmetrically arranged about the vertical center axis of the rail hanging wheel (4), and the second magnetic sheets (18) and the first magnetic sheets (17) are magnetically repelled, and the first magnetic sheets (17) are distributed at equal intervals at the bottom of the positioning plate (15).

8. The detachable silent hanging rail extremely narrow sliding door according to claim 1, characterized in that: The inner grooves (19) are vertically distributed at equal angles in the rail hanging wheel (4), the length of the inner grooves (19) is greater than the diameter of the iron ball (20), and rubber pads are laid at both upper and lower ends of the inner grooves (19).

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