Friction-driven linkage door with one fixed part and two movable parts

Abstract

The utility model relates to the technical field of linkage doors, in particular to a one-fixed two-movable friction driving linkage door, which is characterized in that a friction wheel module is arranged at the upper end of a first movable door plate and comprises a first extension arm and a friction wheel; a first avoiding area is formed on the front side of the first extension arm; an upper pulley module is arranged at the upper end of the second movable door plate, and an upper portal frame of the upper pulley module crosses the first movable door plate in a bent shape; when the overlapping degree of the two movable door plates is maximum or minimum, the first upper pulley enters a first avoiding area; the upper end of the upper pulley module is connected with a friction resistance module, and a friction rubber strip of the friction resistance module abuts against the upper end of the friction wheel. Friction force is generated through contact between the friction rubber strip and the friction wheel, and the effect that one movable door can drive the other movable door to be linked by pulling the movable door is achieved; meanwhile, the compact design of the extension arm and the upper portal frame is adopted, the width of the overlapping area of the two movable door plates is effectively reduced, and the door body structure is more concise.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of linkage door, especially one solid two active friction drive linkage door. BACKGROUND

[0002] The shower room often adopts the sliding door structure, and its characteristics are that the combination of the fixed door and the movable door is used to realize opening and closing by moving on the guide rail through the pulley, thereby saving space. Among them, the one solid two active sliding door is provided with one fixed door and two movable doors, which can provide larger opening space and is widely used.

[0003] In the prior art, for example, the one solid two active friction drive linkage door disclosed in Chinese patent No. CN219993495U increases a friction drive assembly on the top of the first movable door plate and the second movable door plate, realizes the linkage of the first movable door plate and the second movable door plate through the friction drive assembly, and facilitates the user to quickly complete the door opening or closing action. The first roller is arranged on the first movable door plate through the second mounting seat, the second roller is arranged on the second movable door plate through the first mounting seat, the upper guide rail is provided with a guide groove for the lower end rolling of the first roller and the second roller, and the lower ends of the first roller and the second roller slide along the guide groove.

[0004] However, when the first movable door plate and the second movable door plate are completely opened or closed, the first mounting seat and the second mounting seat need to be arranged in a staggered manner, which leads to a large overlapping width of the two movable door plates, affecting the overall appearance simplicity. UTILITY MODEL CONTENTS

[0005] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide a one solid two active friction drive linkage door to solve the above problems.

[0006] The one solid two active friction drive linkage door comprises a left frame body, a right frame body, an upper guide rail connected to the upper ends of the left frame body and the right frame body, a fixed door plate, a first movable door plate and a second movable door plate arranged in a staggered manner along the front and back directions, and an upper guide groove is arranged on the upper guide rail, friction wheel modules are arranged on the left and right sides of the upper end of the first movable door plate, and the friction wheel modules comprise:

[0007] A first fixed component fixed on the first movable door plate;

[0008] A first height adjusting component connected with the first fixed component and capable of adjusting the height;

[0009] A first extension arm controlled in height by the first height adjusting component, which extends along the horizontal direction towards the left side or the right side of the upper guide rail;

[0010] A friction wheel arranged at the end of the first extension arm and sliding along the upper guide groove;

[0011] A first avoiding area is formed at the rear side of the connection between the first extension arm and the first height adjustment assembly;

[0012] An upper pulley module is arranged on the left and right sides of the upper end of the second movable door plate, and the upper pulley module comprises:

[0013] A second fixed assembly fixed to the second movable door plate;

[0014] A second height adjustment assembly connected with the second fixed assembly and capable of being adjusted in height;

[0015] An upper gantry controlled in height by the second height adjustment assembly, which is in a bent shape and crosses the first movable door plate;

[0016] A first upper pulley arranged on the upper gantry and sliding along the upper guide groove at the lower end;

[0017] When the first movable door plate and the second movable door plate overlap maximally or minimally, the first upper pulley enters the first avoiding area on the corresponding side, respectively;

[0018] A friction resistance module is connected to the upper ends of the two upper pulley modules, and the friction resistance module comprises a friction rubber strip above the upper guide groove, the outer diameter of the friction wheel is greater than the outer diameter of the first upper pulley, and the friction rubber strip is in contact with the upper end of the friction wheel.

[0019] Specifically, the first movable door plate is provided with a first mounting hole;

[0020] The first fixed assembly comprises:

[0021] A first nut member, which is installed into the first mounting hole from the rear side;

[0022] A first gasket, which is sleeved on the outer side of the first nut member;

[0023] A first fixed seat, which is arranged at the front end of the first mounting hole;

[0024] A first washer, which is arranged at the front end of the first fixed seat;

[0025] A first screw, which is screwed with the first nut member through the first washer and the first fixed seat at the rear side;

[0026] A first housing, which is connected with the first fixed seat and used for covering the first screw;

[0027] The first height adjustment assembly comprises:

[0028] A first lifting seat connected with the first fixed seat;

[0029] A first screw rod is arranged vertically on the first lifting seat, and a first screwing part is arranged at the lower end of the first screw rod;

[0030] A first threaded sleeve is fixedly connected with the first extension arm and threadedly matched with the first screw rod;

[0031] A first protective sleeve is sleeved outside the first lifting seat.

[0032] Specifically, the first mounting hole is a polygonal hole.

[0033] Specifically, the second movable door plate is provided with a second mounting hole;

[0034] The second fixing assembly comprises:

[0035] A second nut member is arranged in the second mounting hole from the rear side;

[0036] A second gasket is sleeved outside the second nut member;

[0037] A second fixing seat is arranged at the front end of the second mounting hole;

[0038] A second gasket is arranged at the front end of the second fixing seat;

[0039] A second screw is threadedly connected with the second nut member through the second gasket and the rear of the second fixing seat;

[0040] A second housing is clamped with the second fixing seat and used for covering the second screw;

[0041] The second height adjusting assembly comprises:

[0042] A second lifting seat is connected with the second fixing seat;

[0043] A second screw rod is arranged vertically on the second lifting seat, and a second screwing part is arranged at the lower end of the second screw rod;

[0044] A second threaded sleeve is fixedly connected with the upper portal frame and threadedly matched with the second screw rod;

[0045] A second protective sleeve is sleeved outside the second lifting seat.

[0046] Specifically, the second mounting hole is a polygonal hole.

[0047] Specifically, the friction resistance module further comprises a top plate fixed on the upper ends of the two upper pulley modules through a locking member, the top plate is provided with a clamping groove extending in the left-right direction, and the friction rubber strip is clamped in the clamping groove.

[0048] Specifically, the lower guide rail is arranged at the lower end of the left frame body and the right frame body, and the lower guide rail is provided with a lower guide groove;

[0049] The left and right sides of the lower end of the first movable door plate are provided with first lower sliding modules, and the first lower sliding module comprises:

[0050] A third fixing assembly is fixed to the first movable door plate;

[0051] A first bounce assembly connected with the third fixing assembly and capable of being pressed and lifted;

[0052] A second extension arm driven by the first bounce assembly and horizontally extending to the left side or the right side of the lower guide rail;

[0053] A first lower pulley arranged at the tail end of the second extension arm and capable of sliding along the lower guide groove;

[0054] The rear side of the connection between the second extension arm and the first bounce assembly forms a second avoiding area;

[0055] The left and right sides of the lower end of the second movable door plate are provided with second lower sliding modules, and the second lower sliding module comprises:

[0056] A fourth fixing assembly is fixed to the second movable door plate;

[0057] A second bounce assembly connected with the fourth fixing assembly and capable of being pressed and lifted;

[0058] A lower gantry driven by the second bounce assembly and capable of being bent and crossed over the second movable door plate;

[0059] A second lower pulley arranged on the lower gantry and capable of sliding along the lower guide groove;

[0060] When the first movable door plate and the second movable door plate have the maximum or minimum overlap, the second lower pulley enters the second avoiding area on the corresponding side.

[0061] Specifically, the first bounce assembly comprises a first housing connected with the third fixing assembly, a first pressing rod vertically penetrating the first housing, and a first return spring sleeved on the first pressing rod for providing a return force, the upper end of the first pressing rod is provided with a first pressing part, and the lower end is connected with the second extension arm;

[0062] The second bounce assembly comprises a second housing connected with the fourth fixing assembly, a second pressing rod vertically penetrating the second housing, and a second return spring sleeved on the second pressing rod for providing a return force, the upper end of the second pressing rod is provided with a second pressing part, and the lower end is connected with the lower gantry.

[0063] Specifically, handles are provided at both the front and rear ends of the second movable door panel.

[0064] The beneficial effects of this utility model are:

[0065] This application's one-fixed-two-movable friction-driven linkage door includes a left frame, a right frame, an upper guide rail, a fixed door panel, a first movable door panel, and a second movable door panel. The upper guide rail has an upper guide groove. Friction wheel modules are provided on both the left and right sides of the upper end of the first movable door panel. Each friction wheel module includes a first fixed component, a first height adjustment component, a first extension arm, and a friction wheel. A first clearance area is formed at the rear of the connection between the first extension arm and the first height adjustment component. Upper pulley modules are provided on both the left and right sides of the upper end of the second movable door panel. Each upper pulley module includes a second fixed component, a second height adjustment component, an upper gantry frame, and a first upper pulley. The upper gantry frame is bent and crosses the first movable door panel. When the overlap between the first and second movable door panels is at its maximum or minimum, the first upper pulley enters the first clearance area on the corresponding side. A friction resistance module is connected to the upper end of both upper pulley modules. The friction resistance module includes a friction rubber strip located above the upper guide groove, and the friction rubber strip abuts against the upper end of the friction wheel. This application utilizes the friction force generated by the contact between the friction strip and the friction wheel to achieve the effect of pulling one movable door and driving the other movable door in tandem. At the same time, the compact design of the extension arm and upper gantry effectively reduces the width of the overlapping area of ​​the two movable door panels, making the door structure simpler and more aesthetically pleasing after installation. Attached Figure Description

[0066] Figure 1 A three-dimensional view of the closed state of the friction-driven linkage door of this application;

[0067] Figure 2 A perspective view of the opening state of the friction-driven linkage door of this application, showing the one fixed and two movable elements.

[0068] Figure 3 This is a top view of the friction-driven linkage door of this application, which is a fixed door with two movable parts.

[0069] Figure 4 for Figure 3 Sectional view along line AA;

[0070] Figure 5 for Figure 4 A magnified view of position C in the middle;

[0071] Figure 6 for Figure 4 A magnified view of position D in the middle;

[0072] Figure 7 for Figure 3 A three-dimensional sectional view along line BB;

[0073] Figure 8 For Figure 7 Enlarged view of the E position;

[0074] Figure 9 Structure diagram of the first movable door plate, the second movable door plate, the friction wheel module and the upper pulley module of the present application;

[0075] Figure 10 Structure diagram of the first movable door plate, the second movable door plate, the friction wheel module, the upper pulley module, the first lower sliding module and the second lower sliding module of the present application Figure 1 ;

[0076] Figure 11 Structure diagram of the first movable door plate, the second movable door plate, the friction wheel module, the upper pulley module, the first lower sliding module and the second lower sliding module of the present application Figure 2 ;

[0077] Figure 12 Structure diagram of the second movable door plate, the upper pulley module and the second lower sliding module of the present application.

[0078] The reference signs are: left frame body 11, right frame body 12, upper guide rail 13, upper guide groove 131, fixed door plate 14, first movable door plate 15, second movable door plate 16, second mounting hole 161, lower guide rail 17, handle 18, friction wheel module 20, first fixing assembly 21, first nut piece 211, first gasket 212, first fixing seat 213, first washer 214, first screw 215, first outer shell 216, first height adjustment assembly 22, first lifting seat 221, first screw rod 222, first threaded sleeve 223, first extension arm 23, friction wheel 24, upper pulley module 30, second fixing assembly 31, second nut piece 311, second gasket 312, second fixing seat 313, second washer 314, second screw 315, second outer shell 316, second height adjustment assembly 32, second lifting seat 321, second screw rod 322, second threaded sleeve 323, second protective sleeve 324, upper gantry 33, first upper pulley 34, friction resistance module 40, friction rubber strip 41, locking piece 42, top plate 43, first lower sliding module 50, third fixing assembly 51, first bounce assembly 52, first shell 521, first pressing rod 522, second extension arm 53, first lower pulley 54, second lower sliding module 60, fourth fixing assembly 61, second bounce assembly 62, second shell 621, second pressing rod 622, second return spring 623, lower gantry 63, second lower pulley 64. DETAILED DESCRIPTION

[0079] The utility model provides a solid two active friction drive linkage door, in order to make the purpose, technical scheme and effect of the utility model more clear, explicit, the following refers to the drawing and raises the embodiment to make further detailed description to the utility model. It should be understood that the specific embodiment described here is only used to explain the utility model and is not used to limit the utility model.

[0080] In the description of the utility model, it needs to be understood that the orientation description, such as the orientation or position relation indicated by up, down, front, back, left, right etc. based on the orientation or position relation shown in the drawing, is only for the convenience of describing the utility model and simplifying the description, and is not used to indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, so it can not be understood as the limitation of the utility model.

[0081] Please refer to Figures 1-12 The embodiment discloses a solid two active friction drive linkage door, including left frame body 11, right frame body 12, the upper guide rail 13 of being connected in left frame body 11 and right frame body 12 upper end, and the fixed door plate 14 of being set in the front and rear direction in turn staggered, first movable door plate 15 and second movable door plate 16, the upper guide groove 131 of upper guide rail 13 is equipped, and the front and rear two ends of second movable door plate 16 are all provided with handle 18.

[0082] The left and right sides of the upper end of first movable door plate 15 are all equipped with friction wheel module 20, and friction wheel module 20 includes first fixed component 21, first height adjustment component 22, first extension arm 23 and friction wheel 24;First fixed component 21 is fixed on first movable door plate 15;First height adjustment component 22 is connected with first fixed component 21 and can be adjusted in height;First extension arm 23 is controlled in height by first height adjustment component 22, and first extension arm 23 extends along the horizontal direction towards the left side or right side of upper guide rail 13;Friction wheel 24 is arranged at the end of first extension arm 23 and slides along upper guide groove 131;The rear side of the connection of first extension arm 23 and first height adjustment component 22 forms a first avoiding area.

[0083] Reference Figures 1 to 5 The left and right sides of the upper end of second movable door plate 16 are all equipped with upper pulley module 30, and upper pulley module 30 includes second fixed component 31, second height adjustment component 32, upper gantry 33 and first upper pulley 34;Second fixed component 31 is fixed on second movable door plate 16;Second height adjustment component 32 is connected with second fixed component 31 and can be adjusted in height;Upper gantry 33 is controlled in height by second height adjustment component 32, and upper gantry 33 is bent and across first movable door plate 15;First upper pulley 34 is arranged on upper gantry 33 and slides along upper guide groove 131 at the lower end;When first movable door plate 15 and second movable door plate 16 overlap maximum or minimum, first upper pulley 34 enters the first avoiding area of corresponding side respectively.

[0084] Referring to Figure 5 , the upper ends of the two upper pulley modules 30 are jointly connected with a friction resistance module 40, the friction resistance module 40 includes a friction rubber strip 41 located above the upper guide groove 131, the outer diameter of the friction wheel 24 is greater than the outer diameter of the first upper pulley 34, and the friction rubber strip 41 is in abutment with the upper end of the friction wheel 24.

[0085] Referring to Figure 1 and Figure 2 , when the door is opened, the user pulls the second movable door panel 16 through the handle 18, and the first upper pulley 34 of the upper pulley module 30 installed at the upper end of the second movable door panel 16 slides along the upper guide groove 131 of the upper guide rail 13. Since the friction rubber strip 41 of the friction resistance module 40 continuously presses against the upper end of the friction wheel 24, a friction resistance is generated, and when the second movable door panel 16 moves, the friction force will drive the friction wheel 24 on the first movable door panel 15 to roll, so that the first movable door panel 15 moves relatively with the second movable door panel 16. In this process, the moving speed of the first movable door panel 15 will be slower than the direct sliding speed of the second movable door panel 16, thereby realizing the friction linkage effect of the two movable doors, and only one door needs to be operated to realize the coordinated opening and closing of the two doors.

[0086] In addition, a single friction wheel 24 is installed by using a first extension arm 23 horizontally extending from the side of the first movable door panel 15, and the first upper pulley 34 is installed in combination with the upper gantry 33 arranged above the second movable door panel 16, as shown in Figure 9 , which can make the width L of the overlapping area of the upper ends of the first movable door panel 15 and the second movable door panel 16 narrower, and the overall installation effect more simple and beautiful. Compared with the traditional method of additionally installing aluminum materials on the side of the second movable door panel 16 and then installing the first upper pulley 34, the structure of the present application is more compact and reasonable.

[0087] Referring to Figure 5 , the first movable door panel 15 is provided with a first mounting hole; the first fixed component 21 includes a first nut member 211, a first gasket 212, a first fixed seat 213, a first washer 214, a first screw 215 and a first shell 216 arranged in sequence from back to front; the first nut member 211 is installed into the first mounting hole from the back side, the first gasket 212 is sleeved on the outer side of the first nut member 211, the first fixed seat 213 is arranged at the front end of the first mounting hole, the first washer 214 is arranged at the front end of the first fixed seat 213, the first screw 215 passes through the first washer 214 and is threadedly connected with the first fixed seat 213 at the rear side of the first nut member 211, and the first shell 216 is clamped with the first fixed seat 213 for covering the first screw 215. With this structure, the installation is more convenient, and the first shell 216 can effectively protect the internal connecting members such as the first screw 215, thereby improving the aesthetics and safety.

[0088] Reference Figure 5 , the first height adjustment assembly 22 comprises a first lifting seat 221, a first screw rod 222, a first threaded sleeve 223 and a first protective sleeve; the first lifting seat 221 is connected with the first fixed seat 213; the first screw rod 222 is arranged vertically in the first lifting seat 221, and the lower end of the first screw rod 222 is provided with a first screwing part; the first threaded sleeve 223 is fixedly connected with the first extension arm 23 and is in threaded cooperation with the first screw rod 222; and the first protective sleeve is sleeved outside the first lifting seat 221. By rotating the first screw rod 222, the first threaded sleeve 223 can drive the first extension arm 23 and the friction wheel 24 to lift integrally, so as to adjust the cooperation height of the friction wheel 24 and the upper guide groove 131 and the compression degree of the friction wheel 24 and the friction rubber strip 41, and ensure that the linkage effect is stable and reliable.

[0089] The first mounting hole of the embodiment is a polygonal hole, preferably a rectangular hole. The polygonal hole structure can effectively limit the rotation of the first nut member 211 in the mounting hole, prevent it from slipping when the first screw 215 is tightened, ensure that the installation process is smooth and the connection is firm, and at the same time avoid installation errors caused by component distortion.

[0090] Reference Figure 12 , the second movable door plate 16 is provided with a second mounting hole 161; and the second fixed assembly 31 comprises a second nut member 311, a second gasket 312, a second fixed seat 313, a second gasket 314, a second screw 315 and a second shell 316 arranged in sequence from back to front. The second nut member 311 is installed into the second mounting hole from the rear side, the second gasket 312 is sleeved outside the second nut member 311, the second fixed seat 313 is arranged at the front end of the second mounting hole, the second gasket 314 is arranged at the front end of the second fixed seat 313, the second screw 315 passes through the second gasket 314 and is threadedly connected with the rear of the second fixed seat 313 and the second nut member 311, and the second shell 316 is clamped with the second fixed seat 313 and is used for covering the second screw 315; this structure also realizes convenient installation and effective protection of the internal connecting member.

[0091] Reference Figures 5 to 12 , the second height adjustment assembly 32 comprises a second lifting seat 321, a second screw rod 322, a second threaded sleeve 323 and a second protective sleeve 324; the second lifting seat 321 is connected with the second fixed seat 313; the second screw rod 322 is arranged vertically in the second lifting seat 321, and the lower end of the second screw rod 322 is provided with a second screwing part; the second threaded sleeve 323 is fixedly connected with the upper gantry 33 and is in threaded cooperation with the second screw rod 322; and the second protective sleeve 324 is sleeved outside the second lifting seat 321. By rotating the second screw rod 322, the height of the upper gantry 33 and the first upper pulley 34 can be adjusted, so as to ensure that the first upper pulley 34 rolls smoothly in the upper guide groove 131 and maintains a correct relative positional relationship with the friction wheel 24.

[0092] The second mounting hole 161 of the embodiment is a polygonal hole, preferably a rectangular hole. Its function is similar to that of the first mounting hole, mainly to prevent the second nut member 311 from rotating and ensure the mounting firmness of the second fixing assembly 31.

[0093] The friction resistance module 40 further comprises a top plate 43 fixed to the upper ends of the two upper pulley modules 30 by the locking member 42. The top plate 43 is provided with a clamping groove extending in the left-right direction, and the friction rubber strip 41 is clamped in the clamping groove, so that the installation and replacement of the friction rubber strip 41 are more convenient, and the friction rubber strip 41 can be accurately positioned in the length direction to provide uniform and stable friction resistance.

[0094] Referring to Figure 1 , Figure 2 and Figure 6 , the linkage door further comprises a lower guide rail 17 connected to the lower ends of the left frame body 11 and the right frame body 12, and the lower guide rail 17 is provided with a lower guide groove. The left and right sides of the lower end of the first movable door plate 15 are each provided with a first lower sliding module 50, and the first lower sliding module 50 comprises a third fixing assembly 51, a first bounce assembly 52, a second extension arm 53, and a first lower pulley 54. The third fixing assembly 51 is fixed to the first movable door plate 15. The first bounce assembly 52 is connected to the third fixing assembly 51 and can be pressed to rise and fall. The second extension arm 53 is driven by the first bounce assembly 52 and extends horizontally to the left or right side of the lower guide rail 17. The first lower pulley 54 is arranged at the end of the second extension arm 53 and slides along the lower guide groove. The rear side of the connection between the second extension arm 53 and the first bounce assembly 52 forms a second avoiding area. This allows the first lower pulley 54 to be lowered by pressing, facilitating the installation of the first movable door plate 15 into the lower guide rail 17 in the front-back direction. After being released, the first lower pulley 54 is reset into the lower guide groove and abuts against the groove wall under the action of the elastic force, simplifying the installation process.

[0095] Referring to Figures 10 to 12 , the left and right sides of the lower end of the second movable door plate 16 are each provided with a second lower sliding module 60, and the second lower sliding module 60 comprises a fourth fixing assembly 61, a second bounce assembly 62, a lower gantry 63, and a second lower pulley 64. The fourth fixing assembly 61 is fixed to the second movable door plate 16. The second bounce assembly 62 is connected to the fourth fixing assembly 61 and can be pressed to rise and fall. The lower gantry 63 is driven by the second bounce assembly 62 and is bent to cross over the second movable door plate 16. The second lower pulley 64 is arranged on the lower gantry 63 and slides along the lower guide groove. When the first movable door plate 15 and the second movable door plate 16 have the maximum or minimum overlap, the second lower pulley 64 enters the corresponding side of the second avoiding area. The same bounce design facilitates installation, and the structure of the lower gantry 63 helps to reduce the overlapping area of the lower parts of the first movable door plate 15 and the second movable door plate 16.

[0096] Reference Figure 6 The first bounce assembly 52 comprises a first housing 521 connected with the third fixed assembly 51, a first pressing rod 522 vertically penetrating through the first housing 521, and a first return spring sleeved on the first pressing rod 522 for providing a return force. The upper end of the first pressing rod 522 is provided with a first pressing part, and the lower end is connected with the second extension arm 53. Pressing the first pressing part can overcome the force of the first return spring to make the first pressing rod 522 drive the second extension arm 53 and the first lower pulley 54 to descend, and the first lower pulley 54 is clamped into the lower guide slot under the action of the first return spring after being released, so that the operation is simple and convenient.

[0097] Reference Figure 6 And Figure 12 The second bounce assembly 62 comprises a second housing 621 connected with the fourth fixed assembly 61, a second pressing rod 622 vertically penetrating through the second housing 621, and a second return spring 623 sleeved on the second pressing rod 622 for providing a return force. The upper end of the second pressing rod 622 is provided with a second pressing part, and the lower end is connected with the lower gantry 63. The working principle of the second bounce assembly 62 is the same as that of the first bounce assembly 52, and the lifting of the second lower pulley 64 is realized by pressing the second pressing part, so that the second lower pulley 64 is clamped into the lower guide slot.

[0098] The above describes the preferred embodiments of the present application, but the present application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. These equivalent modifications or replacements are all included in the scope of the present application.

Claims

1. A linkage door with one fixed door and two movable doors driven by friction, comprising a left frame (11), a right frame (12), an upper guide rail (13) connected to the upper ends of the left frame (11) and the right frame (12), a fixed door panel (14), a first movable door panel (15) and a second movable door panel (16) arranged in sequence in the front-rear direction and staggered, the upper guide rail (13) is provided with an upper guide groove (131), characterized in that: the left and right sides of the upper end of the first movable door panel (15) are each provided with a friction wheel module (20), the friction wheel module (20) comprises: a first fixed component (21) fixed to the first movable door panel (15); a first height adjustment component (22) connected with the first fixed component (21) and capable of being adjusted in height; a first extension arm (23) controlled in height by the first height adjustment component (22), extending along the horizontal direction towards the left side or the right side of the upper guide rail (13); a friction wheel (24) provided at the end of the first extension arm (23) and sliding along the upper guide groove (131); a first avoiding area formed at the rear side of the connection between the first extension arm (23) and the first height adjustment component (22); the left and right sides of the upper end of the second movable door panel (16) are each provided with an upper pulley module (30), the upper pulley module (30) comprises: a second fixed component (31) fixed to the second movable door panel (16); a second height adjustment component (32) connected with the second fixed component (31) and capable of being adjusted in height; an upper gantry (33) controlled in height by the second height adjustment component (32), which is bent and straddles the first movable door panel (15); a first upper pulley (34) provided on the upper gantry (33) and sliding along the upper guide groove (131) at the lower end; when the first movable door panel (15) and the second movable door panel (16) overlap maximally or minimally, the first upper pulley (34) enters the corresponding side of the first avoiding area, respectively; the upper ends of the two upper pulley modules (30) are jointly connected with a friction resistance module (40), the friction resistance module (40) comprises a friction rubber strip (41) located above the upper guide groove (131), the outer diameter of the friction wheel (24) is greater than the outer diameter of the first upper pulley (34), and the friction rubber strip (41) is in contact with the upper end of the friction wheel (24). 2.The linkage door with one fixed door and two movable doors driven by friction according to claim 1, characterized in that: a first mounting hole is provided on the first movable door panel (15); the first fixed component (21) comprises: a first nut member (211) which is installed into the first mounting hole from the rear side; a first gasket (212) which is sleeved on the outside of the first nut member (211); a first fixed seat (213) which is provided at the front end of the first mounting hole; and a first washer (214) which is provided at the front end of the first fixed seat (213). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ A first screw (215) is screwed with the first nut member (211) after passing through the first washer (214) and the first fixing base (213); A first shell (216) is clamped with the first fixing base (213) to cover the first screw (215); The first height adjustment assembly (22) comprises: A first lifting base (221) connected with the first fixing base (213); A first screw rod (222) vertically arranged in the first lifting base (221), and a first screwing part arranged at a lower end of the first screw rod (222); A first threaded sleeve (223) fixedly connected with the first extension arm (23) and threadedly matched with the first screw rod (222); and A first protective sleeve sleeved outside the first lifting base (221).

3. The linkage door according to claim 2, wherein the first mounting hole is a polygonal hole.

4. The linkage door according to claim 1, wherein the second movable door plate (16) is provided with a second mounting hole (161); The second height adjustment assembly (32) comprises: A second lifting base (321) connected with the second fixing base (313); A second screw rod (322) vertically arranged in the second lifting base (321), and a second screwing part arranged at a lower end of the second screw rod (322); A second threaded sleeve (323) fixedly connected with the upper portal frame (33) and threadedly matched with the second screw rod (322); and A second protective sleeve (324) sleeved outside the second lifting base (321).

5. The linkage door according to claim 4, wherein the second mounting hole (161) is a polygonal hole.

6. The linkage door according to claim 1, wherein the friction resistance module (40) further comprises a top plate (43) fixed on upper ends of the two upper pulley modules (30) by a locking member (42), the top plate (43) is provided with a clamping groove extending in the left-right direction, and the friction rubber strip (41) is clamped in the clamping groove.

7. The linkage door according to claim 1, wherein ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Further comprising a lower guide rail (17) connected to the lower ends of the left frame (11) and the right frame (12), wherein the lower guide rail (17) is provided with a lower guide groove; The lower ends of the left and right sides of the first movable door plate (15) are provided with first lower sliding modules (50), and the first lower sliding modules (50) comprise: A third fixing assembly (51) fixed to the first movable door plate (15); A first bounce assembly (52) connected with the third fixing assembly (51) and capable of being pressed and lifted; A second extension arm (53) driven by the first bounce assembly (52) and horizontally extended to the left side or the right side of the lower guide rail (17); A first lower pulley (54) arranged at the end of the second extension arm (53) and capable of sliding along the lower guide groove; The rear side of the connection between the second extension arm (53) and the first bounce assembly (52) forms a second avoiding area; The lower ends of the left and right sides of the second movable door plate (16) are provided with second lower sliding modules (60), and the second lower sliding modules (60) comprise: A fourth fixing assembly (61) fixed to the second movable door plate (16); A second bounce assembly (62) connected with the fourth fixing assembly (61) and capable of being pressed and lifted; A lower gantry (63) driven by the second bounce assembly (62) and bent across the second movable door plate (16); A second lower pulley (64) arranged on the lower gantry (63) and capable of sliding along the lower guide groove; When the first movable door plate (15) and the second movable door plate (16) have the maximum or minimum overlap, the second lower pulley (64) enters the second avoiding area on the corresponding side.

8. The one fixed two movable friction belt driven linkage door according to claim 7, wherein: The first bounce assembly (52) comprises a first housing (521) connected with the third fixing assembly (51), a first pressing rod (522) vertically arranged in the first housing (521), and a first return spring sleeved on the first pressing rod (522) for providing a return force, wherein the upper end of the first pressing rod (522) is provided with a first pressing part, and the lower end is connected with the second extension arm (53); The second bounce assembly (62) comprises a second housing (621) connected with the fourth fixing assembly (61), a second pressing rod (622) vertically arranged in the second housing (621), and a second return spring (623) sleeved on the second pressing rod (622) for providing a return force, wherein the upper end of the second pressing rod (622) is provided with a second pressing part, and the lower end is connected with the lower gantry (63).

9. The one fixed two movable friction belt driven linkage door according to claim 1, wherein: The front and rear ends of the second movable door plate (16) are provided with handles (18).

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