Damping opening and closing device of folding door

Abstract

The invention relates to the field of folding door opening and closing devices, and particularly discloses a folding door damping opening and closing device which is provided with an adjustable traction mechanism which can slide along a guide sliding rail so as to drive a door leaf to be opened and closed and further comprises a buffering device. The buffering device comprises a damping mechanism, an elastic mechanism and a rotating shifting fork in transmission fit with the elastic mechanism, so that when the door leaf is opened and closed, one end of the adjustable traction mechanism can be in transmission with the rotating shifting fork, then the damping mechanism and the elastic mechanism are driven to buffer the opening and closing speed of the door leaf, and then the opening and closing speed of the door leaf is slowed down.

Description

Technical Field

[0001] The invention relates to the field of folding door switch devices, and in particular to a folding door damping switch device. Background Art

[0002] Folding doors are widely used due to their special opening method, small space occupation and ability to be almost fully opened. Currently, folding doors are generally opened and closed using manual push-pull switches or electric automatic push-pull switches. The electric automatic push-pull switches are controlled by system preset programs, so they can better control the force when opening and closing the door, thereby controlling the opening and closing speed of the door. However, manual push-pull switches are sometimes difficult to control the force of the sliding door, so it is easy to cause the door to be opened and closed too quickly, resulting in collision and damage between the door leaf and the door frame, thereby affecting the service life of the door. Sometimes, opening and closing the door too quickly will cause collision and noise, which will affect the user experience.

[0003] The technical problem to be solved by the present application is to design a folding door damping switch device that can slow down the opening and closing speed of the door leaf. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a folding door damping switch device capable of slowing down the opening and closing speed of a door leaf.

[0005] The technical solution adopted by the present invention is: a folding door damping switch device, including an adjustable traction mechanism connected to the door leaf, one end of the adjustable traction mechanism is provided with a guide slide rail that cooperates with the door leaf for limiting sliding, and also includes a buffer device for buffering the switching speed of the door leaf, the buffer device includes a damping mechanism, an elastic mechanism that cooperates with the damping mechanism in transmission, and a rotating fork that cooperates with the elastic mechanism in transmission, and the rotating fork cooperates with one end of the adjustable traction mechanism in transmission when the door leaf is opened and closed.

[0006] In some embodiments, two buffer devices are provided in left and right mirror images, and the buffer devices are connected by a guide rail. The buffer device includes a mounting chassis, and the mounting chassis is provided with a guide groove. The guide grooves on the two buffer devices are respectively connected to the two ends of the guide rail.

[0007] In some embodiments, the damping mechanism includes a damping sleeve rotatably connected to the mounting chassis, a damper sleeved in the damping sleeve, and a damping joint arranged at one end of the damper. A connecting column is provided at one end of the rotating fork, and the damping joint is rotatably connected to the connecting column.

[0008] In some embodiments, the elastic mechanism includes a rotating fork rotatably connected to the mounting chassis, a guide pin rotatably connected to the rotating fork at one end, and an elastic member sleeved on the guide pin. The mounting chassis is provided with two oppositely disposed blocks, oppositely disposed slots are provided between the blocks, guide plates are provided between the slots and are mutually engaged and connected, and the other end of the guide pin passes through the guide plate.

[0009] In some embodiments, a socket is provided at the other end of the rotating fork, and the socket is used to cooperate with one end of the adjustable traction mechanism in a limited position. The mounting chassis is provided with a connecting shaft, and the rotating fork is rotatably connected to the connecting shaft. The rotating fork is also provided with a connecting protrusion, and a boss is provided at one end of the guide nail, and a limiting recessed hole is provided in the boss. The connecting protrusion and the limiting recessed hole are limited and rotatably cooperated so that the guide nail and the rotating fork are rotatably connected, and the two ends of the elastic member are respectively abutted against the boss and the guide plate to prevent separation between the guide nail and the rotating fork.

[0010] In some embodiments, the adjustable traction mechanism includes a bracket and an adjustment plate connected to the bracket guide, and one end of the bracket is respectively provided with a first rolling bearing, a second rolling bearing and a third rolling bearing rotatably connected thereto, the rolling surface of the first rolling bearing abuts against the outer side surface of the guide slide rail, the rolling surface of the second rolling bearing abuts against the two inner side surfaces of the guide slide rail, and the rolling surface of the third rolling bearing abuts against the bottom surface of the guide slide rail.

[0011] In some embodiments, the adjustment plate includes an adjustment part and a connecting part interconnected with the adjustment part, the adjustment part is respectively provided with an adjustment hole and a connecting groove, the bracket is provided with a limit hole corresponding to the adjustment hole, a mutually locking rivet is provided between the limit hole and the adjustment hole, the bracket is provided with a connecting hole corresponding to the connecting groove, an adjustment screw connected to each other is provided between the connecting groove and the connecting hole, a limit groove is provided on the connecting part, and a limit block is provided on the bracket, and the limit block and the limit groove are limitedly matched.

[0012] In some embodiments, a quick-loading mechanism is provided at one end of the adjustment plate, and the quick-loading mechanism includes a clamping column provided on the adjustment plate and a torsion spring sleeved on the clamping column. The quick-loading mechanism also includes a connecting hook block rotatably connected to the adjustment plate. A limiting surface is provided on the adjustment plate, and the two ends of the torsion spring are respectively abutted against the limiting surface and the connecting hook block. A limiting column for limiting the rotation angle of the connecting hook block is also provided on the adjustment plate corresponding to the connecting hook block. The quick-loading mechanism also includes a connecting plate installed on the door leaf, a limiting nail is provided at one end of the connecting plate, and a limiting opening is provided on the adjustment plate corresponding to the connecting hook block, and the limiting nails are respectively engaged with the connecting hook block and the limiting opening.

[0013] In some embodiments, an arc block is also provided on the mounting chassis, a limiting slide groove is provided in the arc block, a sliding block that cooperates with the limiting slide groove to slide therewith is provided in the limiting slide groove, a locking screw is provided on the sliding block, and the locking screw and the arc block are locked to limit the opening and closing angle of the door leaf.

[0014] In some embodiments, the elastic mechanism includes an elastic member having one end connected to the rotating fork, a fixing nail is provided on the mounting chassis, the other end of the elastic member is connected to the fixing nail, the rotating fork is provided with a connecting nail, and one end of the elastic member is connected to the rotating fork by connecting to the connecting nail.

[0015] The present invention has the following technical effects: by providing an adjustable traction mechanism, the adjustable traction mechanism can slide along the guide rail to drive the door leaf to open and close, and also includes a buffer device, the buffer device includes a damping mechanism, an elastic mechanism and a rotating fork that cooperates with the elastic mechanism for transmission, so that when the door leaf opens and closes, one end of the adjustable traction mechanism can transmit to the rotating fork, and then drive the damping mechanism and the elastic mechanism to buffer the opening and closing speed of the door leaf, thereby slowing down the opening and closing speed of the door leaf. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a folding door damping switch device according to Embodiment 1 of the present invention;

[0017] Figure 2 This is a schematic structural diagram of a buffer device of a folding door damping switch device according to Embodiment 1 of the present invention;

[0018] Figure 3 This is a schematic structural diagram of an adjustable traction mechanism of a folding door damping switch device according to Embodiment 1 of the present invention;

[0019] Figure 4 This is a schematic structural diagram of an adjustable traction mechanism of a folding door damping switch device according to Embodiment 1 of the present invention;

[0020] Figure 5 This is a schematic diagram of the reverse structure of the adjustable traction mechanism of the folding door damping switch device according to Embodiment 1 of the present invention;

[0021] Figure 6 This is a schematic diagram of the support structure of the folding door damping switch device according to Embodiment 1 of the present invention;

[0022] Figure 7 This is a schematic diagram of the structure of the adjustment plate of the folding door damping switch device according to Embodiment 1 of the present invention;

[0023] Figure 8 This is a schematic diagram of the connecting plate structure of the folding door damping switch device according to Embodiment 1 of the present invention;

[0024] Fig. 9 This is a schematic diagram of the mounting chassis structure of the folding door damping switch device according to Embodiment 1 of the present invention;

[0025] Fig.10 This is a schematic diagram of the rotating fork structure of the folding door damping switch device according to Embodiment 1 of the present invention;

[0026] Fig.11 This is a schematic diagram of the door opening state when the folding door damping switch device according to embodiment 1 of the present invention is used;

[0027] Fig.12 This is a schematic diagram of the door opening state when the folding door damping switch device according to embodiment 1 of the present invention is used;

[0028] Fig.13 This is a schematic diagram of the door closing state when the folding door damping switch device according to embodiment 1 of the present invention is used;

[0029] Fig.14 This is a schematic diagram of the door closing state when the folding door damping switch device according to embodiment 1 of the present invention is used;

[0030] Fig.15 This is a schematic diagram of the transmission structure of the folding door damping switch device and the elastic mechanism when the door is about to be opened in Example 1 of the present invention;

[0031] Fig.16 This is a schematic diagram of the structure of the folding door damping switch device of embodiment 1 of the present invention being separated from the elastic mechanism when the door is about to be closed;

[0032] Fig.17 This is a schematic diagram of the structure of the buffer device of the folding door damping switch device in embodiment 2 of the present invention.

[0033] The numbers and names in the figure correspond to each other as follows: 1. adjustable traction mechanism; 2. guide rail; 3. buffer device; 30. damping mechanism; 31. elastic mechanism; 32. mounting chassis; 320. guide groove; 300. damping sleeve; 301. damper; 302. damping joint; 310. rotating fork; 311. elastic member; 312. fixing nail; 313. connecting column; 314. socket; 315. retaining edge; 316. limiting edge; 317. connecting shaft; 318. connecting nail; 33. arc block; 330. limiting slide groove; 331. sliding block; 332. locking screw; 10. bracket; 11. adjustment plate; 100. first rolling bearing; 1 01. second rolling bearing; 102. third rolling bearing; 12. adjusting part; 13. connecting part; 120. adjusting hole; 121. connecting groove; 103. limiting hole; 104. rivet; 105. connecting hole; 106. adjusting screw; 130. limiting groove; 107. limiting block; 14. quick-release mechanism; 140. clamping column; 141. torsion spring; 142. connecting hook block; 143. limiting surface; 144. limiting column; 145. connecting plate; 146. limiting pin; 147. limiting opening; 15. limiting shaft; 108. sleeve; 321. guide pin; 322. clamping block; 323. clamping groove; 324. guide plate; 325. connecting protrusion. DETAILED DESCRIPTION

[0034] 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.

[0035] Example 1: Please refer to Figure 1-16 The present invention provides a technical solution: a folding door damping switch device, comprising an adjustable traction mechanism 1 connected to a door leaf, one end of the adjustable traction mechanism 1 is provided with a guide rail 2 that is limitedly slidably matched with the door leaf, the guide rail 2 is used to be installed on the top of a cabinet or a door frame, the adjustable traction mechanism 1 comprises a bracket 10 and an adjustment plate 11 that is detachably connected to the bracket 10, one end of the bracket 10 is respectively provided with a first rolling bearing 100, a second rolling bearing 101 and a third rolling bearing 102 that are rotatably connected thereto, the rolling surface of the first rolling bearing 100 is against the outer side surface of the guide rail 2, and the rolling surface of the second rolling bearing 101 is against the outer side surface of the guide rail 2. The two inner side surfaces of the rail 2 abut against each other, and the rolling surface of the third rolling bearing 102 abuts against the bottom surface of the guide rail 2. By making the rolling surfaces of the first rolling bearing 100 and the second rolling bearing 101 abut against the outer side surface and the inner side surface of the guide rail 2 respectively, the installation stability between the adjustable traction mechanism 1 and the guide rail 2 can be maintained, and derailment between the adjustable traction mechanism 1 and the guide rail 2 can be avoided. The rolling surface of the third rolling bearing 102 abuts against the bottom surface of the guide rail 2, which ensures the sliding smoothness between the adjustable traction mechanism 1 and the guide rail 2, so that the adjustable traction mechanism 1 can slide smoothly along the guide rail 2.

[0036] The adjusting plate 11 includes an adjusting portion 12 and a connecting portion 13 interconnected with the adjusting portion 12. The adjusting portion 12 and the connecting portion 13 are arranged in a stepped manner. The adjusting portion 12 is provided with an adjusting hole 120 and a connecting groove 121, respectively. The adjusting hole 120 is a U-shaped hole. The bracket 10 is provided with a limiting hole 103 corresponding to the adjusting hole 120. A mutually locked rivet 104 is provided between the limiting hole 103 and the adjusting hole 120. The adjusting plate 11 can slide within the length range of the adjusting hole 120 through the adjusting hole 120 with the rivet 104 as a guide. The bracket 10 is provided with a connecting hole 105 corresponding to the connecting groove 121. An adjusting screw 106 connected to each other is provided between the connecting groove 121 and the connecting hole 105 to ensure The connection stability between the adjustment plate 11 and the bracket 10 is ensured by a limiting groove 130 on the connecting portion 13. The bracket 10 is arranged in an L shape. A limiting block 107 is provided on the bracket 10. The limiting cooperation between the limiting block 107 and the limiting groove 130 enables the overlapping part between the adjustment plate 11 and the bracket 10 to be perfectly overlapped and installed. Therefore, when it is necessary to adjust the airtightness between the two doors when the folding door leaf is closed, the adjusting screw 106 can be adjusted so that the adjustment plate 11 can slide along the rivet 104 within the length range of the adjusting hole 120, thereby changing the length of the entire adjustable traction mechanism 1, and then the adjusted adjustable traction mechanism 1 can be fully closed when the two doors are closed after being installed with the door leaf.

[0037] A quick-loading mechanism 14 is also provided at one end of the adjusting plate 11. The quick-loading mechanism 14 includes a clamping column 140 provided on the connecting portion 13 of the adjusting plate 11 and a torsion spring 141 sleeved on the clamping column 140. The quick-loading mechanism 14 also includes a connecting hook block 142 rotatably connected to the adjusting plate 11. A limiting surface 143 is provided on the connecting portion 13. The limiting surface 143 is a step surface. The two ends of the torsion spring 141 respectively abut against the limiting surface 143 and the connecting hook block 142. Therefore, after the connecting hook block 142 is moved to the side abutting against the torsion spring 141, Since the torsion spring 141 rebounds after being compressed, the connecting hook block 142 can also automatically restore. A limiting column 144 for limiting the rotation angle of the connecting hook block 142 is also provided on the adjusting plate 11 corresponding to the connecting hook block 142. The quick-installing mechanism 14 also includes a connecting plate 145 installed on the door leaf, and a limiting nail 146 is provided at one end of the connecting plate 145. A limiting opening 147 is provided at one end of the connecting portion 13 of the adjusting plate 11 corresponding to the connecting hook block 142. When the connecting hook block 142 is supported by the torsion spring 141 and limited by the limiting column 144, the connecting hook block 142 is automatically restored. A clamping hole is formed between the connecting hook block 142 and the limiting opening 147, and the limiting nail 146 is respectively engaged with the clamping hole formed between the connecting hook block 142 and the limiting opening 147. When it is necessary to quickly install the adjustable traction mechanism 1 between the door, the connecting hook block 142 only needs to be manually moved to separate the connecting hook block 142 from the limiting opening 147, and the limiting nail 146 is embedded in the limiting opening 147, and then the connecting hook block 142 is released. The connecting hook block 142 is automatically restored due to the rebound of the torsion spring 141 after being compressed. Driven to rotate, the connecting hook block 142 and the limiting opening 147 are closed again, so that the limiting nail 146 is locked. By providing a limiting column 144, the rotation angle of the connecting hook block 142 can be limited, so that the connecting hook block 142 can just form a locking hole with the limiting opening 147 to lock the limiting nail 146. The locking hole formed between the connecting hook block 142 and the limiting opening 147 is rotated and matched with the limiting nail 146, so that the adjustable traction mechanism 1 can drive the folding door leaf to open and close when sliding.

[0038] The folding door 3 also includes a buffer device 3, which can buffer and slow down the speed of opening and closing of the door leaf, so that the folding door can be opened and closed slowly to avoid damage caused by collision. The buffer device 3 is provided with two left and right mirror images on the cabinet or door frame, which are respectively used to slow down the speed of opening or closing the door leaf. The two buffer devices 3 are connected to each other through the guide rail 2. The buffer device 3 includes a mounting chassis 32, and a guide groove 320 is provided on the mounting chassis 32. The guide groove 320 is in an arc shape. The guide grooves 320 on the two buffer devices 3 are respectively connected to the two ends of the guide rail 2. The buffer device 3 also includes a damping mechanism 30 provided on the mounting chassis 32, an elastic mechanism 31 that cooperates with the damping mechanism 30 for transmission, and a spring mechanism 31 that cooperates with the spring mechanism 31 for transmission. The rotating fork 310 is matched, and the rotating fork 310 is rotatably connected to the mounting chassis 32. The damping mechanism 30 includes a damping sleeve 300 rotatably connected to the mounting chassis 32, a damper 301 sleeved in the damping sleeve 300, and a damping joint 302 arranged at one end of the damper 301. The elastic mechanism 31 includes a guide pin 321 rotatably connected to the rotating fork 310 at one end and an elastic member 311 sleeved on the guide pin 321. The elastic member 311 is a spring. Two relatively arranged clamping blocks 322 are provided on the mounting chassis 32. A relatively arranged clamping groove 323 is provided between the two clamping blocks 322. A guide plate 324 is provided between the two clamping grooves 323, and the other end of the guide pin 321 passes through the guide plate 324. The shift fork 310 is also provided with a connecting protrusion 325, and one end of the guide pin 321 is rotatably connected to the rotating shift fork 310 by being rotatably connected to the connecting protrusion 325. This is because a boss is provided at one end of the guide pin 321, and a limiting recessed hole is provided on the side of the boss facing the connecting protrusion 325. The connecting protrusion 325 and the limiting recessed hole are limited and rotated to cooperate with each other so that the guide pin 321 and the connecting protrusion 325 are rotatably connected, and then the guide pin 321 and the rotating shift fork 321 are rotatably connected. Since the elastic member 311 is sleeved on the guide pin 321, and since the guide pin 321 passes through the guide plate 324, the two ends of the elastic member 311 are respectively in contact with the boss and the guide plate 324, and the distance between the boss and the guide plate 324 is such that the elastic member 311 The elastic member 311 is in a compressed state, so the two ends of the elastic member 311 respectively abut the boss and the guide plate 324 to avoid the guide nail 321 and the rotating fork 310 from being separated. A connecting column 313 is provided at one end of the rotating fork 310, and the damping joint 302 is rotatably connected to the connecting column 313. A socket 314 is provided at the other end of the rotating fork 310, and a connecting shaft 317 is provided on the mounting chassis 32. The middle position of the rotating fork 310 is rotatably connected to the connecting shaft 317, and the opening directions of the sockets 314 on the left and right buffer devices 3 are arranged oppositely. The first rolling bearing 100 and the second rolling bearing 101 on the adjustable traction mechanism 1 are connected to the bracket 10 through the sleeve 108. When the folding door is in a fully closed state,At this time, the sleeve 108 connected to the first rolling bearing 100 on the adjustable traction mechanism 1 is just in the socket 314 on the buffer device 3 located on the side of the door closing direction. The sleeve 108 and the socket 314 are limited and matched. The two sides of the socket 314 are divided into a retaining edge 315 and a limiting edge 316. The length of the retaining edge 315 is longer than the length of the limiting edge 316, so that the sleeve 108 can slide into the socket 314 and limit it, so that the transmission fork 310 is in transmission cooperation with one end of the adjustable traction mechanism 1 when the door leaf is opened and closed. When the door needs to be opened, the folding door is pushed at this time to make the adjustable traction mechanism 1 slide along the guide groove 320 and slide to the guide slide rail 2. A limiting shaft 15 is also provided on the mounting chassis 32. When the adjustable traction mechanism 1 moves along the guide groove When the sliding of 320 drives the rotating fork 310 to rotate, the limit shaft 15 can limit the maximum angle of the rotating fork 310 driven by the sleeve 108 to rotate. When the limit shaft 15 and the rotating fork 310 are in conflict, as the folding door is opened, the adjustable traction mechanism 1 continues to slide forward, so the sleeve 108 on the adjustable traction mechanism 1 is separated from the socket 314. Since one end of the rotating fork 310 is rotatably connected to the damping joint 302, when the rotating fork 310 is in conflict with the limit shaft 15 and separated from the sleeve 108, the two ends of the rotating fork 310 are respectively subjected to the pulling force of the elastic member 311 and the damping force of the damping mechanism 30 to maintain a balanced prohibited state, and the buffer device 30 on the other side is The rotating fork 310 on the door 100 and the rotating fork 310 on this side maintain the same state, so when the adjustable traction mechanism 1 continues to slide along the guide rail 2 to the guide groove 320 on the other side, the sleeve 108 connected to the first rolling bearing 100 is limited between the socket 314 on the rotating fork 310 on the door opening side, and the rotating fork 310 on this side is pushed by the adjustable traction mechanism 1 and the restoring resilience of the elastic member 311, so that the rotating fork 310 starts to rotate in the direction of compression of the elastic member 311, and because the other end of the rotating fork 310 is in transmission cooperation with the damping mechanism 30, the damping mechanism 30 can buffer the rotation speed of the rotating fork 310, which is equivalent to slowing down the adjustable traction mechanism. The sliding speed of the mechanism 1 in the guide groove 320 is equivalent to slowing down the opening speed of the door. In order to control the directional opening or closing of the folding door, an arc block 33 is further provided on the mounting chassis 32. A limiting slide groove 330 is provided in the arc block 33. The limiting slide groove 330 is proportionally reduced to the guide groove 320. A sliding block 331 is provided in the limiting slide groove 330 to cooperate with the limiting sliding. A locking screw 332 is provided on the sliding block 331. The locking screw 332 can be locked with the arc block 33 to block the adjustable traction mechanism 1, thereby limiting the opening and closing angle of the door. When the adjustable traction mechanism 1 continues to slide in the guide groove 320, the locking screw 332 can stop the sliding adjustable traction mechanism 1, thereby making the door open and close in a directional manner.The locking screw 332 can also be loosened, so that the sliding block 331 slides in the limiting slide groove 330 and changes the locking position between the locking screw 332 and the arc block 33, thereby changing the opening and closing angle of the door. When the door needs to be closed, the folding door is pushed in the opposite direction, so that the adjustable traction mechanism 1 on the folding door in the open state slides in the opposite direction along the guide groove 320. At this time, the rotating fork 310 is blocked by the limiting shaft 15 and separated from the sleeve 108. The adjustable traction mechanism 1 continues to slide along the guide rail 2 to the guide groove 320 on the other side, and is limited between the socket 314 on the rotating fork 310 on this side, thereby driving the rotating fork 310 on this side to rotate back until it is stopped by the locking screw 332 on the buffer device 3 on this side, thereby completing the closing process of the folding door.

[0039] Example 2: Please refer to Fig.17 The present invention provides another technical solution: a folding door damping switch device, which adopts any one of the folding door damping switch devices in the above-mentioned embodiment 1, wherein the elastic mechanism 31 includes a rotating fork 310 rotatably connected to the mounting chassis 32 and an elastic member 311 connected to the rotating fork 310 at one end, the elastic member 311 is a spring, and a fixing nail 312 is also provided on the mounting chassis 32, and the other end of the elastic member 311 is connected to the fixing nail 312, and a connecting nail 318 is also provided at the end of the rotating fork 310 close to the socket 314, and one end of the elastic member 311 is connected to the rotating fork 310 by connecting with the connecting nail 318. By connecting the two ends of the elastic member 311 to the fixing nail 312 on the mounting chassis 32 and the connecting nail 318 on the rotating fork 310 respectively, when the rotating fork 310 rotates, the elastic member 311 can also be driven to expand and contract, thereby assisting the rotating fork 310 to maintain balance or pulling the rotating fork 310 to drive the folding door to open and close slowly.

[0040] The beneficial effects of the present invention are as follows: by providing an adjustable traction mechanism 1, the adjustable traction mechanism 1 can slide along the guide rail 2 so as to drive the door leaf to open and close, and also includes a buffer device 3, the buffer device 3 includes a damping mechanism 30, an elastic mechanism 31 and a rotating fork 310 that cooperates with the elastic mechanism 31 for transmission, so that when the door leaf is opened and closed, one end of the adjustable traction mechanism 1 can transmit to the rotating fork 310, and then drive the damping mechanism 30 and the elastic mechanism 31 to buffer the opening and closing speed of the door leaf, thereby slowing down the opening and closing speed of the door leaf.

[0041] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A folding door damping switch device, characterized in that: It includes an adjustable traction mechanism connected to the door leaf, one end of the adjustable traction mechanism is provided with a guide slide rail which is limitedly slidably matched with the door leaf, and also includes a buffer device for buffering the opening and closing speed of the door leaf, the buffer device includes a damping mechanism, an elastic mechanism which is transmission-matched with the damping mechanism, and a rotating fork which is transmission-matched with the elastic mechanism, and the rotating fork is transmission-matched with one end of the adjustable traction mechanism when the door leaf is opened and closed.

2. The folding door damping switch device according to claim 1, characterized in that: The buffer device is provided with two mirror images on the left and right, and the buffer devices are connected by a guide rail. The buffer device includes a mounting chassis, and the mounting chassis is provided with a guide groove. The guide grooves on the two buffer devices are respectively connected to the two ends of the guide rail.

3. The folding door damping switch device according to claim 2, characterized in that: The damping mechanism comprises a damping sleeve rotatably connected to the mounting chassis, a damper sleeved in the damping sleeve and a damping joint arranged at one end of the damper. A connecting column is arranged at one end of the rotating fork, and the damping joint is rotatably connected to the connecting column.

4. The folding door damping switch device according to claim 2, characterized in that: The elastic mechanism includes a guide pin with one end rotatably connected to the rotating fork and an elastic member sleeved on the guide pin. The mounting chassis is provided with two oppositely arranged clamping blocks, oppositely arranged clamping grooves are provided between the clamping blocks, and guide plates that are mutually clamped and connected are provided between the clamping grooves. The other end of the guide pin passes through the guide plate.

5. The folding door damping switch device according to claim 4, characterized in that: The other end of the rotating fork is provided with a socket, and the socket is used to cooperate with one end of the adjustable traction mechanism. The mounting chassis is provided with a connecting shaft, and the rotating fork is rotatably connected to the connecting shaft. The rotating fork is also provided with a connecting protrusion, and one end of the guide nail is provided with a boss, and a limiting recessed hole is provided in the boss. The connecting protrusion and the limiting recessed hole are limited and rotatably cooperated so that the guide nail and the rotating fork are rotatably connected, and the two ends of the elastic member are respectively abutted against the boss and the guide plate to avoid separation between the guide nail and the rotating fork.

6. The folding door damping switch device according to claim 1, characterized in that: The adjustable traction mechanism includes a bracket and an adjustment plate connected to the bracket guide. One end of the bracket is respectively provided with a first rolling bearing, a second rolling bearing and a third rolling bearing which are rotatably connected thereto. The rolling surface of the first rolling bearing abuts against the outer side surface of the guide slide rail, the rolling surface of the second rolling bearing abuts against the two inner side surfaces of the guide slide rail, and the rolling surface of the third rolling bearing abuts against the bottom surface of the guide slide rail.

7. The folding door damping switch device according to claim 6, characterized in that: The adjustment plate includes an adjustment part and a connecting part interconnected with the adjustment part, the adjustment part is respectively provided with an adjustment hole and a connecting groove, the bracket is provided with a limiting hole corresponding to the adjustment hole, a mutually locking rivet is provided between the limiting hole and the adjustment hole, the bracket is provided with a connecting hole corresponding to the connecting groove, an adjusting screw connected to each other is provided between the connecting groove and the connecting hole, the connecting part is provided with a limiting groove, the bracket is provided with a limiting block, and the limiting block and the limiting groove are limitedly matched.

8. The folding door damping switch device according to claim 6, characterized in that: A quick-loading mechanism is provided at one end of the adjusting plate, and the quick-loading mechanism includes a clamping column arranged on the adjusting plate and a torsion spring sleeved on the clamping column. The quick-loading mechanism also includes a connecting hook block rotatably connected to the adjusting plate. A limiting surface is provided on the adjusting plate, and the two ends of the torsion spring are respectively abutted against the limiting surface and the connecting hook block. A limiting column for limiting the rotation angle of the connecting hook block is also provided on the adjusting plate corresponding to the connecting hook block. The quick-loading mechanism also includes a connecting plate installed on the door leaf, a limiting nail is provided at one end of the connecting plate, and a limiting opening is provided on the adjusting plate corresponding to the connecting hook block, and the limiting nails are respectively engaged with the connecting hook block and the limiting opening.

9. The folding door damping switch device according to claim 2, characterized in that: An arc block is also provided on the mounting chassis, a limiting slide groove is provided in the arc block, a sliding block that cooperates with the limiting slide groove for limiting sliding is provided in the limiting slide groove, a locking screw is provided on the sliding block, and the locking screw and the arc block are locked to limit the opening and closing angle of the door leaf.

10. The folding door damping switch device according to claim 4, characterized in that: The elastic mechanism includes an elastic member connected to a rotating fork at one end, a fixing nail is provided on the mounting chassis, the other end of the elastic member is connected to the fixing nail, the rotating fork is provided with a connecting nail, and one end of the elastic member is connected to the rotating fork by connecting to the connecting nail.

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