Function conversion structure of rebound damping device and rebound damping device

Abstract

The utility model discloses a function conversion structure of a rebound damping device and the rebound damping device, and belongs to the technical field of sliding rails. The function conversion structure comprises a conversion handle, a rebound damping device is provided with a trigger transmission block arranged in a shell, a pressing gap is formed between the trigger transmission block and the shell, the conversion handle is arranged on the shell or the trigger transmission block, the conversion handle is provided with a locking position and an unlocking position which can be mutually switched, and at the locking position, the rebound damping device is arranged on the trigger transmission block. The conversion handle is propped between the trigger transmission block and the shell so as to eliminate a pressing activity space of the trigger transmission block; in the unlocking position, the conversion handle is separated from the abutting state so that the trigger transmission block can be normally pressed. According to the utility model, the conversion handle can be used for limiting the accidental triggering rebound of the rebound damping device, so that the condition that the rebound damping device pops up under the non-subjective pressing conditions such as carrying, transportation and careless collision is avoided; in addition, flexible switching between the rebound function and the damping self-closing function can be achieved.

Description

Technical Field

[0001] The utility model relates to a slide rail fitting, and more specifically, to a function conversion structure of a rebound damping device and a rebound damping device. Background Art

[0002] In order to improve the convenience and safety of the opening and closing operations of slides for furniture, cabinets, drawers, etc., many functional fittings for such slides have emerged on the market. Common functional fittings include damping devices and push-and-rebound devices. The damping device stores energy when the slide is opened and automatically slowly pulls the slide back to the closed position after the slide is closed to a certain extent, enabling the buffered closing of drawer-type pull-out furniture. The push-and-rebound device stores energy when the slide is closed and leaves a space for pressing to unlock. By pressing the drawer or other pull-out furniture, it is unlocked and rebounds, realizing the automatic popping open of the pull-out furniture.

[0003] Based on the above working principles of the damping device and the push-and-rebound device, if one wants to simultaneously achieve the functions of damping closing and push-and-rebound on the slide rail, the damping device and the push-and-rebound device need to be stably coordinated in terms of structure and function. Chinese Patent No. ZL202110996044.4 discloses a "rebound device for a damping closing slide rail and a damping closing-push-and-rebound slide rail", and its authorization announcement date is April 25, 2023. The rebound device for the damping closing slide rail in this application case includes a housing, a striker chuck, a sliding seat, a trigger unlocking member, an energy accumulator, and a locking rod. During the advancement of the rebound device, the pushing mechanism is used to cooperate with the striker chuck to store energy for the rebound device, and at the same time, a space for the damping closing of the slide rail can be reserved. During the pressing and rebounding process of the rebound device, the striker chuck is used to push open the stop portion of the trigger unlocking member to unlock and rebound the sliding seat, driving the striker chuck to rebound and reset. The advancement and pressing and rebounding actions of the rebound device are stably connected, enabling a smooth transition with the damper. The rebound device in the above patent application case can push and rebound and damping close, but the rebound function cannot be locked, and the slide rail or drawer will pop out under non-subjective pressing situations such as handling, transportation, and accidental collisions, easily resulting in unexpected situations such as collisions. In addition, in different usage scenarios, people have different requirements for the push-and-rebound function. The existing rebound devices cannot switch between the rebound function and the damping self-closing function, and cannot be used when only the damping closing function is required. Summary of the Invention

[0004] 1. Technical Problems to be Solved by the Utility Model

[0005] The purpose of the present utility model is to overcome the above-mentioned deficiencies existing in the existing rebound damping device, and to provide a function conversion structure of a rebound damping device and a rebound damping device. By adopting the technical solution of the present utility model, the conversion handle can be used to lock or unlock the pressing movement space of the rebound damping device. After the pressing movement space is locked by using the conversion handle, the accidental triggering and rebounding of the rebound damping device can be restricted, avoiding the situation of popping out under non-subjective pressing such as handling, transportation, and accidental collision; moreover, when the conversion handle is used to restrict the pressing and rebounding function, the damping self-closing function can be used alone, realizing flexible switching between the rebounding function and the damping self-closing function, and meeting the different functional requirements of different usage scenarios.

[0006] 2. Technical solution

[0007] To achieve the above object, the technical solution provided by the present utility model is as follows:

[0008] A function conversion structure of a rebound damping device of the present utility model includes a conversion handle provided on the rebound damping device. The rebound damping device has a trigger transmission block provided in a housing. There is a pressing gap between the trigger transmission block and the housing. The unlocking and rebounding of the rebound damping device are achieved by pressing the trigger transmission block. The conversion handle is provided on the housing or the trigger transmission block, and the conversion handle has a locking position and an unlocking position that can be switched with each other. In the locking position, the conversion handle abuts between the trigger transmission block and the housing to eliminate the pressing movement space of the trigger transmission block; in the unlocking position, the conversion handle is disengaged from the abutting state so that the trigger transmission block can be normally pressed.

[0009] Furthermore, a positioning structure is provided between the conversion handle and the housing or the trigger transmission block in the above-mentioned locking position and unlocking position.

[0010] Furthermore, the conversion handle is rotatably provided on the trigger transmission block. One side of the housing has an abutting portion. The conversion handle rotates and switches between the above-mentioned locking position and unlocking position. In the locking position, the conversion handle abuts on the abutting portion of the housing; in the unlocking position, the conversion handle is disengaged from the abutting portion of the housing.

[0011] Furthermore, one end of the conversion handle has an abutting head that can be abutted and cooperated with the above-mentioned abutting portion, the other end has a rotation operation portion located outside the housing, and the middle portion of the conversion handle has a rotation shaft rotatably installed on the trigger transmission block.

[0012] Furthermore, the trigger transmission block is provided with a first positioning protrusion and a second positioning groove, and the conversion handle correspondingly has a first positioning groove and a second positioning protrusion. In the locked position, the first positioning groove cooperates with the first positioning protrusion to keep the conversion handle in the locked position; in the unlocked position, the second positioning protrusion cooperates with the second positioning groove to keep the conversion handle in the unlocked position.

[0013] A rebound damping device of the present utility model includes a rebound assembly and a damping self-closing assembly arranged on one side of the rebound assembly. The rebound assembly includes a housing, a pressing and rebounding mechanism arranged in the housing, and a trigger transmission block. There is a pressing gap between the trigger transmission block and the housing. By pressing the trigger transmission block, the pressing and rebounding mechanism is unlocked and rebounds. The device further includes a conversion handle arranged on the housing or the trigger transmission block. The conversion handle has a locked position and an unlocked position that can be switched with each other. In the locked position, the conversion handle abuts between the trigger transmission block and the housing to eliminate the pressing movement space of the trigger transmission block; in the unlocked position, the conversion handle disengages from the abutting state so that the trigger transmission block can be normally pressed.

[0014] Furthermore, the pressing and rebounding mechanism of the rebound assembly includes a gear box and a rebound spring. A transmission gear and a clutch mechanism for switching between bidirectional rotation and unidirectional rotation of the transmission gear are arranged in the gear box. At least part of the teeth of the transmission gear are exposed outside the gear box. The gear box is arranged in the housing and can slide between a first position and a second position. When the gear box is in the first position, the clutch mechanism releases the transmission gear so that it can rotate bidirectionally. When the gear box moves away from the first position, the clutch mechanism locks the rotational freedom of one direction of the transmission gear so that it can only rotate unidirectionally; the gear box and the housing have a locking structure at the first position. The rebound spring is arranged between the gear box and the housing and is used to keep the gear box in an elastic tendency to move from the first position to the second position. There is a matching relationship between the trigger transmission block and the above-mentioned locking structure, which unlocks the gear box at the first position after pressing the trigger transmission block and rebounds the gear box to the second position under the action of the rebound spring.

[0015] Furthermore, the damping self-closing assembly includes a self-closing damping frame, a self-closing spring seat, a self-closing spring, a damper and a self-closing chuck. The self-closing spring seat is slidably arranged in the self-closing damping frame along the moving direction of the gear box. One end of the self-closing spring is connected to the self-closing spring seat, and the other end of the self-closing spring is connected to the self-closing chuck. The damper is arranged in the self-closing damping frame and is connected to the self-closing chuck; one end of the self-closing spring seat abuts against the gear box. When the gear box rebounds from the first position to the second position, the self-closing spring seat can move towards the gear box under the pulling of the self-closing spring. When the gear box moves from the second position to the first position, the self-closing spring seat moves with the gear box to stretch and store energy in the self-closing spring.

[0016] Further, the transmission gear is mounted on the rotating shaft through a one-way bearing. The clutch mechanism includes a stop gear fixed on the rotating shaft and a clutch arm mounted in the gearbox. The clutch arm is provided with saw teeth that can engage or disengage with the stop gear. At the first position, the clutch arm is disengaged from the stop gear; during the process of the gearbox moving away from the first position and moving towards the second position, the clutch arm engages with the stop gear.

[0017] Further, the locking structure between the gearbox and the housing includes a sliding pin provided at one end of the clutch arm and a track groove provided on the inner side of the housing. The clutch arm is rotatably mounted in the gearbox through a swing shaft. The sliding pin is slidably fitted in the track groove. The track groove has a straight groove section, an arc guide groove located at one end of the straight groove section close to the first position, and a clamping groove. The sliding pin can be guided by the straight groove section through the arc guide groove and enter the clamping groove to form the locking of the gearbox at the first position; a touch pin is also provided on one side of the clutch arm. A synchronous trigger block is provided at one end of the trigger transmission block close to the first position. The synchronous trigger block has a rebound unlocking portion, and the rebound unlocking portion has a pushing inclined surface that can cooperate with the touch pin; at the first position, when the trigger transmission block is pressed, the rebound unlocking portion moves towards the distal end, and the pushing inclined surface pushes the touch pin to cause the clutch arm to deflect towards the stop gear, prompting the sliding pin to disengage from the clamping groove and enter the straight groove section to unlock, and at the same time the clutch arm engages with the stop gear.

[0018] 3. Beneficial effects

[0019] Adopting the technical solution provided by the present utility model, compared with the existing well-known technologies, it has the following beneficial effects:

[0020] (1) For the function conversion structure and the rebound damping device of the rebound damping device of the present utility model, the conversion handle can be used to lock or unlock the pressing movement space of the rebound damping device. After locking the pressing movement space by using the conversion handle, it can limit the accidental triggering and rebound of the rebound damping device, avoiding the situation of popping out under non-subjective pressing such as handling, transportation, and accidental collision; moreover, when using the conversion handle to limit the pressing and rebound function, the damping self-closing function can be used alone, realizing the flexible switching between the rebound function and the damping self-closing function, and meeting the different function requirements of different usage scenarios;

[0021] (2) For the function conversion structure and the rebound damping device of the rebound damping device of the present utility model, there are positioning structures between the conversion handle and the housing or the trigger transmission block at the above-mentioned locking position and unlocking position. The positioning structure can ensure the stability of the conversion handle at the locking position and the unlocking position;

[0022] (3) The function conversion structure and the rebound damping device of a rebound damping device of the present utility model, wherein the conversion handle is rotatably arranged on the trigger transmission block, and one side of the housing has an abutting portion. The conversion handle rotates and switches between the above-mentioned locked position and the unlocked position. In the locked position, the conversion handle abuts against the abutting portion of the housing; in the unlocked position, the conversion handle disengages from the abutting portion of the housing. With the above-mentioned conversion handle design, it has the advantages of simple structure, convenient operation, reliable locking, etc.;

[0023] (4) The function conversion structure and the rebound damping device of a rebound damping device of the present utility model, wherein one end of the conversion handle has an abutting head capable of abutting and cooperating with the above-mentioned abutting portion, and the other end has a rotating operation portion located outside the housing. The middle of the conversion handle has a rotating shaft rotatably installed on the trigger transmission block. The structure design of this conversion handle is simple, and the assembly and operation are flexible and convenient;

[0024] (5) The function conversion structure and the rebound damping device of a rebound damping device of the present utility model, wherein the trigger transmission block has a first positioning protrusion and a second positioning groove, and the conversion handle correspondingly has a first positioning groove and a second positioning protrusion. The positioning of the conversion handle is realized by the cooperation of the positioning protrusion and the positioning groove. The structure is simple, easy to implement, the positioning is stable, and it is convenient for the switching operation of the conversion handle;

[0025] (6) A rebound damping device of the present utility model includes a rebound assembly and a damping self-closing assembly arranged on one side of the rebound assembly. The pressing and rebounding mechanism of the rebound assembly includes a gear box and a rebound tension spring. A transmission gear and a clutch mechanism for switching the bidirectional rotation and unidirectional rotation of the transmission gear are arranged in the gear box. The gear box is arranged in the housing and can slide between a first position and a second position. When the gear box is in the first position, the clutch mechanism releases the transmission gear so that it can rotate bidirectionally. When the gear box disengages from the first position, the clutch mechanism locks the rotation freedom of one direction of the transmission gear so that it can only rotate unidirectionally; the gear box and the housing have a locking structure at the first position. The rebound tension spring is arranged between the gear box and the housing and is used to keep the gear box in an elastic trend of moving from the first position to the second position. There is a matching relationship between the trigger transmission block and the above-mentioned locking structure, which unlocks the gear box at the first position after pressing the trigger transmission block and rebounds it to the second position under the action of the rebound tension spring; by using the pressing, unlocking and rebounding of the gear box, and matching with the design of switching the bidirectional rotation and unidirectional rotation of the transmission gear in the gear box, the matching stability of the pressing and rebounding function and the damping closing function is better, and the pressing and rebounding is more stable and reliable; when using the conversion handle to limit the pressing and rebounding function, the damping self-closing assembly can work normally, realizing flexible switching between the rebounding function and the damping self-closing function;

[0026] (7) A rebound damping device of the present utility model, wherein the damping self-closing component of the device includes a self-closing damping frame, a self-closing spring seat, a self-closing spring, a damper, and a self-closing chuck. The self-closing spring seat is slidably arranged in the self-closing damping frame along the moving direction of the gearbox. One end of the self-closing spring is connected to the self-closing spring seat, and the other end of the self-closing spring is connected to the self-closing chuck. The damper is arranged in the self-closing damping frame and is connected to the self-closing chuck. One end of the self-closing spring seat abuts against the gearbox. When the gearbox rebounds from the first position to the second position, the self-closing spring seat can move towards the gearbox under the pulling of the self-closing spring. When the gearbox moves from the second position to the first position, the self-closing spring seat moves with the gearbox to stretch and store energy in the self-closing spring. The rebound component and the damping self-closing component are organically combined. When the gearbox rebounds, the self-closing spring can move along, without hindering the pressing and rebounding function. When the gearbox resets and stores energy, the self-closing spring can also stretch and store energy together, ensuring the working stability of the rebound damping device;

[0027] (8) A rebound damping device of the present utility model, wherein the driving gear is installed on the rotating shaft through a one-way bearing. The clutch mechanism includes a stop gear fixed on the rotating shaft and a clutch arm installed in the gearbox. The clutch arm is provided with sawteeth that can mesh with or disengage from the stop gear. At the first position, the clutch arm disengages from the stop gear. During the process of the gearbox moving away from the first position and moving towards the second position, the clutch arm meshes with the stop gear. With the above clutch mechanism and one-way bearing design, the driving gear can freely switch between forward and reverse rotation and one-way rotation. Under the condition of meeting the normal opening and closing of the slide rail, the pressing and rebounding and damping closing elastic energy storage can be realized through the movement of the gearbox, and the cooperation is stable and reliable. The one-way rotation of the driving gear is realized by using a one-way bearing, and the structure is simple and compact, and the manufacturing and assembly are convenient;

[0028] (9) A rebound damping device of the present utility model, wherein the locking structure between the gearbox and the housing includes a sliding pin arranged at one end of the clutch arm and a track groove arranged on the inner side of the housing. The track groove has a straight groove section, an arc-shaped guide groove located at one end of the straight groove section close to the first position, and a clamping groove. The sliding pin can be guided by the straight groove section through the arc-shaped guide groove and enter the clamping groove to form the locking of the gearbox at the first position. A trigger pin is also arranged on one side of the clutch arm. At the first position, when the trigger transmission block is pressed by the slide rail, the rebound unlocking part moves towards the distal end, and the pushing inclined surface pushes the trigger pin to cause the clutch arm to swing towards the stop gear, prompting the sliding pin to disengage from the clamping groove and enter the straight groove section to unlock, and at the same time, the clutch arm meshes with the stop gear. The engagement or separation with the stop gear is realized by the cooperation of the track groove and the clutch arm. The clutch arm is swung and unlocked by using the pushing inclined surface on the rebound unlocking part, and the structural design is simple and ingenious, easy to assemble and manufacture, and the pressing and rebounding trigger is stable and reliable. Description of the Drawings

[0029] Figure 1 Schematic three-dimensional structure diagram of a rebound damping device with a conversion handle according to the present utility model;

[0030] Figure 2 Schematic three-dimensional structure diagram (in the state of removing the upper cover) of a rebound damping device with a conversion handle according to the present utility model;

[0031] Figure 3 Schematic overall disassembled structure diagram of a rebound damping device with a conversion handle according to the present utility model;

[0032] Figure 4 Schematic diagram of the installation position of the conversion handle in the rebound damping device according to the present utility model;

[0033] Figure 5(a) is Figure 4 partial enlarged structure diagram at position A in (the conversion handle is in the unlocked position);

[0034] Figure 5(b) is Figure 4 partial enlarged structure diagram at position A in (the conversion handle is in the locked position);

[0035] Figure 6 Schematic assembly structure diagram of the conversion handle and the trigger drive block at an angle according to the present utility model;

[0036] Figure 7 Schematic assembly structure diagram of the conversion handle and the trigger drive block at another angle according to the present utility model;

[0037] Figure 8 Schematic structure diagram of the conversion handle according to the present utility model;

[0038] Figure 9 Schematic structure diagram of the internal mating relationship in the housing of the rebound damping device according to the present utility model;

[0039] Figure 10 Schematic back structure diagram of the internal mating relationship in the housing of the rebound damping device according to the present utility model;

[0040] Figure 11 Schematic internal structure diagram of the base of the rebound damping device according to the present utility model;

[0041] Figure 12 Schematic back structure diagram of the base of the rebound damping device according to the present utility model;

[0042] Figure 13 Schematic overall structure diagram of the gearbox of the rebound damping device according to the present utility model;

[0043] Figure 14Schematic diagram of the split structure of the gearbox in the rebound damping device of the present utility model;

[0044] Figure 15 Schematic diagram of the mating structure of the clutch arm and the stop gear in the rebound damping device of the present utility model;

[0045] Figure 16 Schematic diagram of the mating structure of the transmission gear and the clutch arm in the rebound damping device of the present utility model;

[0046] Figure 17(a) is a schematic diagram of the mating state of the transmission gear and the clutch arm when the gear box is in the first position in the present utility model;

[0047] Figure 17(b) is a schematic diagram of the pressing and unlocking state when the gear box is in the first position in the present utility model;

[0048] Figure 17(c) is a schematic diagram of the mating state of the transmission gear and the clutch arm when the gear box is in the second position in the present utility model;

[0049] Figure 18 Schematic diagram of the split structure of the damping self-closing component in the rebound damping device of the present utility model;

[0050] Figure 19(a) is a schematic diagram of the self-closing chuck of the damping self-closing component in the present utility model when it is in a state of being engaged with the self-closing dial pin;

[0051] Figure 19(b) is a schematic diagram of the self-closing chuck of the damping self-closing component in the present utility model when it is in a state of being separated from the self-closing dial pin;

[0052] Figure 20 Schematic diagram of the installation structure of the rebound damping device of the present utility model on the slide rail.

[0053] Explanation of the reference numerals in the schematic diagram:

[0054] 1. Base; 1-1. Adjusting hole; 1-2. Positioning piece; 2. Rebound assembly; 21. Housing; 21-1. Base; 21-1a. Contact part; 21-1-1. Rail groove; 21-1-1a. Straight groove section; 21-1-1b. Arc-shaped guide groove; 21-1-1c. Clamping groove; 21-1-2. Card slot; 21-1-3. Mounting shaft; 21-1-4. First buffer spring piece; 21-1-5. Buckle; 21-1-6. Boss; 21-2. Upper cover; 22. Gear box; 22-1. Box body; 22-1-1. Intermediate box body; 22-1-2. Upper cover plate; 22-1-3. Lower cover plate; 22-1-3a. Kidney-shaped hole; 22-1-4. Second buffer spring piece; 22-2. Driving gear; 22-3. Rotating shaft; 22-4. One-way bearing; 22-5. Stopping gear; 22-6. Clutch arm; 22-6-1. Swing shaft; 22-6-2. Sliding pin; 22-6-3. Trigger pin; 22-6-4. Saw teeth; 23. Trigger transmission block; 23a. First return spring; 23-1. Trigger part; 23-1a. First positioning protrusion; 23-1b. Second positioning groove; 23-1c. Shaft hole; 24. Synchronous trigger block; 24a. Second return spring; 24-1. Trigger extension arm; 24-2. Rebound unlocking part; 24-3. Pushing inclined plane; 25. Synchronous rotating shaft; 25-1. Tongue; 26. Rebound tension spring; 27. Rotating wheel; 28. Rebound tension spring seat; 29. Regulator; 3. Damping self-closing assembly; 31. Self-closing damping frame; 31-1. Guide part; 31-2. Guide rib; 31-3. Corner; 31-4. Tension spring seat sliding groove; 31-5. Damper installation groove; 32. Self-closing tension spring seat; 32-1. Contact part; 33. Self-closing tension spring; 34. Damper; 35. Self-closing slider; 36. Self-closing chuck; 36-1. Chuck groove; 36-2. Guide groove; 36-3. Corner groove; 4. Conversion handle; 4-1. Contact head; 4-1a. First positioning groove; 4-1b. Second positioning protrusion; 4-2. Rotating operation part; 4-3. Rotating shaft; 5. Synchronous rod; 6. Slide rail assembly; 6-1. Fixed rail; 6-2. Movable rail; 6-3. Rack fixing seat; 6-4. Rack; 6-5. Self-closing dialing pin; 6-6. Trigger piece; W. Pressing gap. Detailed implementation mode

[0055] To further understand the content of the present invention, the present invention will be described in detail with reference to the accompanying drawings and embodiments.

[0056] [Embodiment]

[0057] Combined with Figures 1 to 3As shown in the figure, a function conversion structure of a bounce damping device according to this embodiment includes a conversion handle 4 provided on the bounce damping device. The function of the bounce damping device is similar to that of the prior art. The bounce damping device has a trigger transmission block 23 provided in a housing 21. There is a pressing gap W between the trigger transmission block 23 and the housing 21. The trigger transmission block 23 can move within the range of the pressing gap W. The bounce damping device is unlocked and bounced by pressing the trigger transmission block 23. Different from the prior art, the conversion handle 4 is provided on the housing 21 or the trigger transmission block 23, and the conversion handle 4 has a lock position and an unlock position that can be switched with each other. In the lock position, the conversion handle 4 abuts between the trigger transmission block 23 and the housing 21 to eliminate the pressing movement space of the trigger transmission block 23. In the unlock position, the conversion handle 4 is disengaged from the abutting state so that the trigger transmission block 23 can be normally pressed. In this way, when the conversion handle 4 is in the lock position, the trigger transmission block 23 cannot be pressed at this time, and the pressing bounce function cannot be realized, and only the damping self-closing function of the bounce damping device can be used. When the conversion handle 4 is in the unlock position, the trigger transmission block 23 can be normally pressed at this time, and the normal pressing bounce and damping self-closing functions are realized. Compared with the prior art, after the pressing movement space is locked by using the conversion handle 4, the accidental triggering and bouncing of the bounce damping device can be restricted, and the situation of popping out under non-subjective pressing such as handling, transportation, and accidental collision can be avoided. Moreover, when the pressing bounce function is restricted by using the conversion handle 4, the damping self-closing function can be used alone, realizing flexible switching between the bounce function and the damping self-closing function, and meeting the different function requirements of different usage scenarios.

[0058] The switching actions of the above conversion handle 4 between the lock position and the unlock position can have different structural forms. For example, the conversion handle 4 can be switched by linear motion between the lock position and the unlock position, or can be switched by rotational motion, etc. The conversion handle 4 can be installed on the housing 21 or on the trigger transmission block 23. To ensure the stability of the conversion handle 4 in the lock position and the unlock position, the conversion handle 4 and the housing 21 or the trigger transmission block 23 both have a positioning structure in the above lock position and unlock position. The positioning structure can ensure the stability of the conversion handle 4 in the lock position and the unlock position, and avoid misoperation caused by random movement of the conversion handle 4.

[0059] As Figure 4, as shown in FIGS. 5(a) and 5(b), as a preferred embodiment, the conversion handle 4 is rotatably provided on the trigger transmission block 23. One side of the housing 21 has an abutting portion 21-1a. The conversion handle 4 rotates and switches between the above-mentioned locked position and the unlocked position. In the locked position, the conversion handle 4 abuts against the abutting portion 21-1a of the housing 21. At this time, due to the restriction of the conversion handle 4, the trigger transmission block 23 cannot be pressed, thereby restricting the pressing and rebounding function. In the unlocked position, the conversion handle 4 disengages from the abutting portion 21-1a of the housing 21. At this time, the trigger transmission block 23 can move within the pressing gap W range, and thus the pressing and rebounding function can be achieved by pressing the trigger transmission block 23. Adopting the above design of the conversion handle 4 has the advantages of simple structure, convenient operation, and reliable locking. Further, one end of the conversion handle 4 has an abutting head 4-1 that can abut and cooperate with the above-mentioned abutting portion 21-1a, and the other end has a rotation operation portion 4-2 located outside the housing 21. The middle part of the conversion handle 4 has a rotation shaft 4-3 rotatably mounted on the trigger transmission block 23. The specific installation structure of the conversion handle 4 on the trigger transmission block 23 is as Figure 6 and Figure 7 shown. At the end of the trigger transmission block 23, there is a trigger portion 23-1. An axial hole 23-1c is provided on the trigger portion 23-1. The end of the rotation shaft 4-3 has an elastic clamping structure. During installation, the rotation shaft 4-3 of the conversion handle 4 is aligned with the axial hole 23-1c and pressed in. At this time, the end of the rotation shaft 4-3 is squeezed and shrunk. After the rotation shaft 4-3 is installed in place, the end of the rotation shaft 4-3 extends out of the axial hole 23-1c and is stuck in the axial hole 23-1c, realizing the rotational installation of the conversion handle 4 on the trigger transmission block 23 and enabling the conversion handle 4 to rotate freely. The conversion handle 4 can be integrally in a "︿" shape. The rotation operation portion 4-2 is located outside the housing 21, and the rotation operation portion 4-2 can be toggled to control the rotation and switching of the conversion handle 4. The rotation angle of the conversion handle 4 can be designed to be 30° to 60°, and a rotation angle of 40° is preferred. When the conversion handle 4 rotates to the locked position, its abutting head 4-1 can just abut against the abutting portion 21-1a of the housing 21, thereby restricting the pressing operation of the trigger transmission block 23. When the conversion handle 4 rotates to the unlocked position, the abutting head 4-1 rotates to one side of the abutting portion 21-1a and no longer blocks the trigger transmission block 23. The structural design of this conversion handle 4 is simple, and the assembly and operation are flexible and convenient.

[0060] As Figures 6 to 8As shown, the above positioning structure can adopt the cooperation structure of a positioning groove and a positioning protrusion. In this embodiment, the trigger transmission block 23 further has a first positioning protrusion 23-1a and a second positioning groove 23-1b, and the conversion handle 4 correspondingly has a first positioning groove 4-1a and a second positioning protrusion 4-1b. In the locked position, the first positioning groove 4-1a cooperates with the first positioning protrusion 23-1a to keep the conversion handle 4 in the locked position; in the unlocked position, the second positioning protrusion 4-1b cooperates with the second positioning groove 23-1b to keep the conversion handle 4 in the unlocked position. The positioning of the conversion handle 4 is achieved by the cooperation of the positioning protrusion and the positioning groove, with a simple structure, easy to implement, stable positioning, and convenient for the switching operation of the conversion handle 4. Moreover, when the above positioning protrusion and positioning groove cooperate, there is a positioning sound and a sense of resistance, and it is possible to judge whether the conversion handle 4 has been switched in place through the positioning sound and the sense of resistance.

[0061] Of course, the above positioning structure is not limited to the specific structural form of the above positioning groove and positioning protrusion, and other similar existing positioning structures can also be used to achieve the stable holding of the position of the conversion handle 4. The above conversion handle 4 can also be rotatably installed on the housing 21, and at this time, a resisting portion that abuts against its abutting head 4-1 can be provided on the trigger transmission block 23. If the conversion handle 4 is switched by linear motion, the conversion handle 4 can adopt a push button or other structures, and the switching between the locked position and the unlocked position is achieved through the pushing and pulling motion of the conversion handle 4. The conversion handle 4 can also be installed on the housing 21 or the trigger transmission block 23, and the locking or unlocking of the trigger transmission block 23 is achieved through the same principle.

[0062] This embodiment also relates to a rebound damping device. The rebound damping device includes a rebound assembly 2 and a damping self-closing assembly 3 provided on one side of the rebound assembly 2. The rebound assembly 2 and the damping self-closing assembly 3 can be provided on the base 1 to achieve the functions of pressing and rebounding and damping closing of the slide rail. The rebound assembly 2 includes a housing 21, a pressing and rebounding mechanism provided in the housing 21, and a trigger transmission block 23. There is a pressing gap W between the trigger transmission block 23 and the housing 21, and the pressing and rebounding mechanism is unlocked and rebounds by pressing the trigger transmission block 23. The rebound damping device further includes a conversion handle 4 provided on the housing 21 or the trigger transmission block 23. The conversion handle 4 has a locked position and an unlocked position that can be switched with each other. In the locked position, the conversion handle 4 abuts between the trigger transmission block 23 and the housing 21 to eliminate the pressing movement space of the trigger transmission block 23; in the unlocked position, the conversion handle 4 is disengaged from the abutting state so that the trigger transmission block 23 can be normally pressed.

[0063] The specific installation structure of the conversion handle 4 in the above-mentioned rebound assembly 2 can be referred to as described above, and the function conversion of the rebound damping device can be achieved. After the pressing activity space of the rebound assembly 2 is locked by using the conversion handle 4, the accidental triggering and rebounding of the rebound damping device can be restricted, avoiding the situation of popping out under non-subjective pressing such as handling, transportation, and accidental collision; moreover, when the conversion handle 4 is used to restrict the pressing and rebounding function, the damping self-closing function of the damping self-closing assembly 3 can be used alone, realizing the flexible switching between the rebounding function and the damping self-closing function, and meeting the different functional requirements of different usage scenarios.

[0064] Refer to Figures 1 to 3 and Figures 9 to 10As shown, a rebound damping device according to this embodiment, the pressing and rebounding mechanism of its rebounding component 2 includes a gear box 22 and a rebounding spring 26. A transmission gear 22-2 and a clutch mechanism for switching between bidirectional rotation and unidirectional rotation of the transmission gear 22-2 are provided in the gear box 22. That is, the clutch mechanism can control the rotational freedom of the transmission gear 22-2 and enable the transmission gear 22-2 to switch between bidirectional rotation and unidirectional rotation. At least part of the teeth of the transmission gear 22-2 are exposed outside the gear box 22 for meshing with the corresponding rack on the slide rail. Generally speaking, this rebound damping device can be installed on the fixed rail of the slide rail or the drawer cabinet through the base 1. A rack is correspondingly installed on the movable rail of the slide rail or the drawer, and this rack meshes with the transmission gear 22-2 of the gear box 22. When the slide rail or the drawer is closed, the reverse rotation of the transmission gear 22-2 is restricted by the clutch mechanism. At this time, the movement of the rack will drive the gear box 22 to move inward together until the gear box 22 is moved to the locked position. At this time, the clutch mechanism releases the transmission gear 22-2 so that it can rotate bidirectionally, and the slide rail or the drawer can be normally closed; during the unlocking and rebounding process of the gear box 22, the transmission gear 22-2 is the same, that is, the gear box 22 can drive the rack to rebound together. At the same time, because the transmission gear 22-2 can rotate unidirectionally, the slide rail or the drawer can be normally opened continuously. Specifically, the gear box 22 is arranged in the housing 21 and can slide between a first position and a second position. When the gear box 22 is in the first position, the clutch mechanism releases the transmission gear 22-2 so that it can rotate bidirectionally. When the gear box 22 moves away from the first position, the clutch mechanism locks the rotational freedom of one direction of the transmission gear 22-2 so that it can only rotate unidirectionally. The unidirectional rotation direction of the transmission gear 22-2 is the direction that allows the slide rail or the drawer to be opened. That is, no matter what position the gear box 22 is in, the slide rail or the drawer can be normally pulled out and opened. The reverse locking of the transmission gear 22-2 only takes effect during the rebounding and resetting process of the gear box 22 to the first position. In this way, the rebounding of the gear box 22 can be used to drive the rebounding of the slide rail or the drawer, and the closing of the slide rail or the drawer can also be used to drive the resetting of the gear box 22. The gear box 22 and the housing 21 have a locking structure at the first position. The rebounding spring 26 is arranged between the gear box 22 and the housing 21 for making the gear box 22 maintain an elastic tendency to move from the first position to the second position. After the gear box 22 moves to the first position, it can be locked through the locking structure. There is a matching relationship between the trigger block 23 and the above-mentioned locking structure, which unlocks the gear box 22 at the first position and rebounds to the second position under the action of the rebounding spring 26 after pressing the trigger block 23. That is to say, when pressing the slide rail or the drawer inward, the trigger piece 6-6 on the slide rail or the drawer will drive the trigger block 23 to move (as shown in Figure 20 ), the trigger block 23 will drive the locking structure to unlock the gear box 22, and the gear box 22 can rebound under the action of the rebounding spring 26.

[0065] In this embodiment, the transmission gear 22-2 can rotate in both forward and reverse directions at the first position, enabling the normal pushing and pulling of the slide rail or the drawer. After the transmission gear 22-2 leaves the first position, it can only rotate in one direction, enabling the gearbox 22 to drive the slide rail or the drawer to bounce open when rebounding, and enabling the slide rail or the drawer to drive the slide rail or the drawer back to the first position to store energy when the slide rail or the drawer is closed. As Figures 13 to 16 shown, in this embodiment, the transmission gear 22-2 is mounted on the rotating shaft 22-3 through a one-way bearing 22-4. The one-way bearing 22-4 is a bearing that can rotate freely in one direction and is locked in the other direction, also called an overrunning clutch, which is an existing mature product. The clutch mechanism includes a stop gear 22-5 fixed on the rotating shaft 22-3 and a clutch arm 22-6 installed in the gearbox 22. The clutch arm 22-6 is provided with teeth 22-6-4 that can engage or disengage with the stop gear 22-5. At the first position, the clutch arm 22-6 is disengaged from the stop gear 22-5, making the stop gear 22-5 in a free state. At this time, the transmission gear 22-2 can rotate in both forward and reverse directions; during the process of the gearbox 22 moving away from the first position and moving towards the second position, the clutch arm 22-6 engages with the stop gear 22-5. At this time, the transmission gear 22-2 can only rotate in one direction. During specific assembly, the stop gear 22-5 and the rotating shaft 22-3 are tightly fitted, and the two are press-fitted into a whole. The outer ring of the one-way bearing 22-4 and the inner hole of the transmission gear 22-2 are also tightly fitted. The one-way bearing 22-4 and the transmission gear 22-2 are press-fitted to form a whole. After the one-way bearing 22-4 is installed on the rotating shaft 22-3, when the rotating shaft 22-3 is fixed, the transmission gear 22-2 can only rotate in one direction. The one-way rotation of the transmission gear 22-2 is realized by using the one-way bearing 22-4, and the structure is simple and compact. By using the cooperation of the clutch arm 22-6 and the stop gear 22-5, the locking or unlocking of the rotating shaft 22-3 can be realized, and further, the transmission gear 22-2 can be switched between forward and reverse rotation and one-way rotation. The structural design is simple, and the manufacturing and assembly are convenient.

[0066] Refer to Figure 3 、 Figure 11 and in combination with Figures 17(a) to 17(c), the locking structure between the above-mentioned gearbox 22 and the housing 21 includes a sliding pin 22-6-2 provided at one end of the clutch arm 22-6 and a track groove 21-1-1 provided on the inner side of the housing 21. The clutch arm 22-6 is rotatably mounted in the gearbox 22 through a swing shaft 22-6-1, so that the clutch arm 22-6 can rotate around the swing shaft 22-6-1. The sliding pin 22-6-2 is slidably fitted in the track groove 21-1-1. The track groove 21-1-1 has a straight groove section 21-1-1a, an arc-shaped guide groove 21-1-1b located at one end of the straight groove section 21-1-1a close to the first position, and a clamping groove 21-1-1c. The straight groove section 21-1-1a extends in the rebound direction. The clamping groove 21-1-1c is located on one side of the arc-shaped guide groove 21-1-1b. The sliding pin 22-6-2 can be guided from the straight groove section 21-1-1a through the arc-shaped guide groove 21-1-1b and into the clamping groove 21-1-1c to form the locking of the gearbox 22 at the first position. A trigger pin 22-6-3 is also provided on one side of the clutch arm 22-6. A synchronous trigger block 24 is provided at one end of the trigger transmission block 23 close to the first position. The synchronous trigger block 24 has a rebound unlocking portion 24-2, and the rebound unlocking portion 24-2 has a pushing inclined surface 24-3 that can cooperate with the trigger pin 22-6-3. When the gearbox 22 moves towards the first position, the sliding pin 22-6-2 deflects to one side from the straight groove section 21-1-1a through the arc-shaped guide groove 21-1-1b, so that the clutch arm 22-6 is disengaged from the stop gear 22-5, and the sliding pin 22-6-2 is engaged in the clamping groove 21-1-1c to lock the gearbox 22 at the first position. At the first position, when the trigger transmission block 23 is pressed, the rebound unlocking portion 24-2 moves towards the distal end, and the pushing inclined surface 24-3 pushes the trigger pin 22-6-3, causing the clutch arm 22-6 to deflect towards the stop gear 22-5, prompting the sliding pin 22-6-2 to disengage from the clamping groove 21-1-1c and enter the straight groove section 21-1-1a to unlock. At the same time, the clutch arm 22-6 meshes with the stop gear 22-5. The engagement and separation of the clutch arm 22-6 and the stop gear 22-5 are determined by the left and right swing positions of the sliding pin 22-6-2. The cooperation between the track groove 21-1-1 and the clutch arm 22-6 realizes the engagement or separation of the clutch arm 22-6 and the stop gear 22-5. The pushing inclined surface 24-3 on the rebound unlocking portion 24-2 is used to swing, unlock and rebound the clutch arm 22-6. The structural design is simple and ingenious, easy to assemble and manufacture, and the pressing and rebound triggering are stable and reliable.

[0067] Such as Figures 17(a) to 17(c)As shown in the figure, through the simplified component orientation diagram, the mating relationship between the transmission gear 22-2 and the clutch arm 22-6 at different positions of the gearbox 22 can be seen. In Figure 17(a), the gearbox 22 is in the above-mentioned first position. At this time, the sliding pin 22-6-2 on the clutch arm 22-6 swings away from the stop gear 22-5 along the arc-shaped guide groove 21-1-1b, so that the serrations 22-6-4 on the clutch arm 22-6 are disengaged from the stop gear 22-5. At this time, the transmission gear 22-2 can rotate forward and backward. At the same time, the sliding pin 22-6-2 cooperates with the clamping groove 21-1-1c, so that the gearbox 22 is restricted at the first position. In the state of Figure 17(a), even if the trigger transmission block 23 is locked by the conversion handle 4 and cannot be pressed, at this time, the slide rail or the drawer can be pulled open and can also be normally closed. Cooperating with the damping self-closing component 3, it can be used as a normal damping slide rail. As shown in Figure 17(b), when the conversion handle 4 is in the unlocked state, when the slide rail or the drawer is moved by pressing, the trigger transmission block 23 moves inward. At this time, the rebound unlocking part 24-2 of the synchronous trigger block 24 moves toward the distal end, and the pushing inclined surface 24-3 will push the trigger pin 22-6-3 to one side, causing the clutch arm 22-6 to swing toward the stop gear 22-5. Furthermore, the sliding pin 22-6-2 is disengaged from the clamping groove 21-1-1c and enters the straight groove section 21-1-1a through the arc-shaped guide groove 21-1-1b. Since the gearbox 22 is no longer restricted, it drives the gearbox 22 to rebound under the action of the rebound spring 26. And because the serrations 22-6-4 of the clutch arm 22-6 are engaged with the stop gear 22-5 at this time, the transmission gear 22-2 cannot rotate counterclockwise, so the slide rail or the drawer is driven to pop out. Figure 17(c) shows the state where the gearbox 22 rebounds to the second position. At this time, the serrations 22-6-4 of the clutch arm 22-6 remain engaged with the stop gear 22-5. Therefore, the transmission gear 22-2 can still only rotate in one direction. At this time, the slide rail or the drawer can be continuously pulled outwards. And when the slide rail or the drawer is pushed inwards, since the transmission gear 22-2 cannot rotate counterclockwise, the gearbox 22 will be driven to move to the first position at this time. After returning to the first position, it is locked again, and the rebound spring 26 is stretched and energized.

[0068] The above-mentioned synchronous trigger block 24 and the trigger transmission block 23 can be of an integral structure or a split structure. In this embodiment, the latter is preferably adopted. As Figure 9 and Figure 10As shown, the synchronous trigger block 24 and the trigger transmission block 23 are separately arranged, and a trigger extension arm 24-1 is provided on the synchronous trigger block 24 to abut against the trigger transmission block 23, a first reset spring 23a is provided between the trigger transmission block 23 and the housing 21, and a second reset spring 24a is provided between the synchronous trigger block 24 and the housing 21 to ensure that both are stably reset; the trigger extension arm 24-1 and the trigger transmission block 23 are kept in abutment state, and when the trigger transmission block 23 moves, the synchronous trigger block 24 can move together. A toggle groove is also provided at one end of the synchronous trigger block 24, and a synchronous shaft 25 is provided in the housing 21. A tongue 25-1 that can be inserted into the toggle groove is provided on the synchronous shaft 25. When the synchronous trigger block 24 moves, the tongue 25-1 can be driven to swing, thereby causing the synchronous shaft 25 to produce a rotational motion. In this way, when a pair of rebound damping devices are provided, the rebound damping devices on the left and right sides can be connected by the synchronization rod 5. After one side of the slide rail or the drawer panel is pressed, the pressing action will be transmitted to the other group of rebound damping devices through the synchronization rod 5 to ensure that the two groups of rebound damping devices are unlocked and rebounded synchronously, thereby avoiding jamming due to asynchronous unlocking of the two sides. Since the synchronization trigger block 24 and the trigger transmission block 23 are separately provided, after the pressing action is transmitted to the other group of rebound damping devices through the synchronization rod 5, the passive synchronization shaft 25 drives the synchronization trigger block 24 matched therewith to move to unlock, without driving the corresponding trigger transmission block 23 to move, thereby reducing the transmission path and resistance.

[0069] like Figure 13 and Figure 14As shown, the above-mentioned transmission gear 22-2, stop gear 22-5 and clutch arm 22-6 are all integrated inside the gearbox 22. The gearbox 22 has a box body 22-1 that can slide inside the housing 21. The box body 22-1 includes an intermediate box body 22-1-1, an upper cover plate 22-1-2 and a lower cover plate 22-1-3. The upper cover plate 22-1-2 is installed on the upper part of the intermediate box body 22-1-1 to form an upper installation cavity for accommodating the transmission gear 22-2. The lower cover plate 22-1-3 is installed on the lower part of the intermediate box body 22-1-1 to form a lower installation cavity for accommodating the stop gear 22-5 and the clutch arm 22-6. A waist-shaped hole 22-1-3a corresponding to the positions of the sliding pin 22-6-2 and the trigger pin 22-6-3 on the clutch arm 22-6 is also provided on the lower cover plate 22-1-3. After the sliding pin 22-6-2 and the trigger pin 22-6-3 pass through the corresponding waist-shaped hole 22-1-3a, they cooperate with the corresponding rebound unlocking part 24-2 and the track groove 21-1-1. In order to prevent the gearbox 22 from generating impact noise when rebounding with the housing 21, a buffer spring piece that cooperates at the second position is provided between the intermediate box body 22-1-1 and the housing 21. Specifically, a first buffer spring piece 21-1-4 can be provided at the proximal end of the housing 21, and a second buffer spring piece 22-1-4 can be provided at the proximal end of the intermediate box body 22-1-1 of the gearbox 22 (as Figure 11 shown). During the rebounding process of the gearbox 22, the first buffer spring piece 21-1-4 contacts the box body 22-1 of the gearbox 22, and the second buffer spring piece 22-1-4 contacts the housing 21. The buffer spring piece generates a buffering effect through deformation, effectively reducing the noise generated by the collision.

[0070] As Figure 3 , Figure 4 , Figures 9 to 11 shown, in this embodiment, a rotating wheel 27 is provided inside the housing 21. The rotating wheel 27 is rotatably installed on the installation shaft 21-1-3 inside the housing 21, so that the rotating wheel 27 can rotate freely. One end of the rebound spring 26 is connected to the gearbox 22, and the other end bypasses the rotating wheel 27 and is connected to the rebound spring seat 28. At least two levels of clamping grooves 21-1-2 for clamping with the rebound spring seat 28 are provided on one side of the housing 21. The rebound pulling force is adjusted by changing the position of the rebound spring seat 28 on the housing 21. As Figure 11As shown, three card slots 21-1-2 are provided on the housing 21. The rebound spring seats 28 correspond to different stretched states of the rebound spring 26 on different card slots 21-1-2, and thus correspond to different pulling forces, that is, rebound forces, of the rebound spring 26 on the gearbox 22. With the change of the rebound force of the slide rail, the ejection distance of the drawer also changes. Different application scenarios and usage habits have different requirements for the rebound distance of the drawer (slide rail), which can be achieved by adjusting the rebound amount. One end of the rebound spring 26 can be clamped in the U-shaped groove on the lower edge of the middle box body 22-1-1 and limited by the lower cover plate 22-1-3, making the connection between the gearbox 22 and the rebound spring 26 simple and convenient.

[0071] Referring to Figures 1 to 4 and Figure 9 Figure 10 and Figure 18 As shown, a rebound damping device of this embodiment, its damping self-closing component 3 includes a self-closing damping frame 31, a self-closing spring seat 32, a self-closing spring 33, a damper 34 and a self-closing chuck 36. The self-closing spring seat 32 is slidably arranged in the self-closing damping frame 31 along the moving direction of the gearbox 22. One end of the self-closing spring 33 is connected to the self-closing spring seat 32, and the other end of the self-closing spring 33 is connected to the self-closing chuck 36. The damper 34 is arranged in the self-closing damping frame 31, and the damper 34 is connected to the self-closing chuck 36. During the closing process of the slide rail or the drawer, the self-closing chuck 36 is combined with the self-closing dial pin 6-5 on the slide rail or the drawer (as Figure 20 shown), and the slide rail or the drawer is automatically closed by the pulling of the self-closing spring 33. At the same time, the damper 34 generates a force opposite to that of the self-closing spring 33 to play a buffering role. One end of the self-closing spring seat 32 abuts against the gearbox 22. When the gearbox 22 rebounds from the first position to the second position, the self-closing spring seat 32 can move towards the gearbox 22 under the pulling of the self-closing spring 33. When the gearbox 22 moves from the second position to the first position, the self-closing spring seat 32 moves with the gearbox 22 to stretch and store energy in the self-closing spring 33. Specifically, a contact portion 32-1 that abuts against the middle box body 22-1-1 is provided on the self-closing spring seat 32. The contact portion 32-1 extends out of the self-closing damping frame 31 and extends into the housing 21 to abut against the box body 22-1 of the gearbox 22.

[0072] Referring to Figure 18As shown in Fig. 19(a) and Fig. 19(b), a damper installation groove 31-5 and a draw spring seat sliding groove 31-4 are provided on the self-closing damper bracket 31. The above damper 34 is fixed in the damper installation groove 31-5, and the self-closing draw spring seat 32 is slidably installed in the draw spring seat sliding groove 31-4. One end of the self-closing damper bracket 31 has a guiding portion 31-1, and guiding ribs 31-2 are provided on the guiding portion 31-1. Corners 31-3 are provided at the ends of the guiding ribs 31-2. The self-closing chuck 36 is connected to the self-closing draw spring 33 and the damper 34 through a self-closing slider 35. The self-closing chuck 36 is rotatably installed on the self-closing slider 35. The self-closing chuck 36 has a chuck groove 36-1 for cooperating with the self-closing dial pin 6-5 on the slide rail, a guiding groove 36-2 for sliding cooperation with the guiding rib 31-2, and a corner groove 36-3 for cooperating with the corner 31-3. As shown in Fig. 19(a), during the process of pulling the slide rail or the drawer from the closed state to the open state, the self-closing dial pin 6-5 is engaged with the chuck groove 36-1 and drives the self-closing chuck 36 to move towards the corner 31-3. At this time, the guiding groove 36-2 of the self-closing chuck 36 cooperates with the straight guiding rib 31-2 to maintain the state shown in Fig. 19(a), and the self-closing dial pin 6-5 can be kept in the chuck groove 36-1. Referring to Fig. 19(b), when the self-closing chuck 36 moves to the corner 31-3, it is rotated by the action of the corner groove 36-3, so that the self-closing dial pin 6-5 is separated from the chuck groove 36-1. At the same time, the corner groove 36-3 of the self-closing chuck 36 is engaged with the corner 31-3, so that the self-closing chuck 36 is kept at the corner 31-3. At this time, the damper 34 is pulled out, and one end of the self-closing draw spring 33 also moves to one end close to the corner 31-3. During the process of closing the slide rail or the drawer from the open state, when the self-closing dial pin 6-5 touches the self-closing chuck 36, the self-closing chuck 36 rotates and disengages from the corner 31-3 to unlock. At the same time, the self-closing dial pin 6-5 is engaged with the chuck groove 36-1 and drives the self-closing dial pin 6-5 to move together in the closing direction of the slide rail. The chuck groove 36-1 is eccentrically arranged with respect to the rotation center of the self-closing chuck 36. When the self-closing chuck 36 moves to the corner 31-3, it can automatically swing, realizing the combination or separation of the self-closing chuck 36 and the self-closing dial pin 5-5, and the locking or unlocking of the self-closing chuck 36 and the guiding rib 31-2. The structure is simple and the conversion is stable.

[0073] As Figure 20As shown, the bounce damping device of this embodiment is installed on the slide rail assembly 6 for use. The slide rail assembly 6 includes a fixed rail 6-1 and a movable rail 6-2. The movable rail 6-2 is slidably disposed on the fixed rail 6-1. An intermediate rail can also be provided between the fixed rail 6-1 and the movable rail 6-2 to form a three-section rail. The above-mentioned bounce damping device is fixed on the fixed rail 6-1 through the base 1. On one side of the movable rail 6-2, a rack 6-4 is installed through a rack fixing seat 6-3. The rack 6-4 meshes with the transmission gear 22-2 in the bounce damping device. On one side of the movable rail 6-2, there is also an autolocking pin 6-5 that cooperates with the autolocking chuck 36 in the damping autolocking assembly 3 and a trigger piece 6-6 that cooperates with the trigger part 23-1 of the trigger transmission block 23 in the bounce assembly 2. When installing the above-mentioned bounce damping device, generally, a certain pressing gap is left between the drawer panel and the cabinet body to facilitate pressing the drawer and triggering the bounce mechanism to pop out the drawer. In reality, there may be installation errors, or factors such as the processing accuracy of the cabinet body and the drawer, which may result in the pressing gap not meeting the requirements. Therefore, it is necessary to adjust the pressing gap to solve the problem. As Figure 1 、 Figure 3 and Figure 12 shown, in this embodiment, the base 1 is provided with a number of adjustment holes 1-1. The housing 21 includes a base 21-1 and an upper cover 21-2. The upper cover 21-2 is fixed on the base 21-1 to limit components such as the gearbox 22 inside the housing 21. The base 21-1 is provided with a number of buckles 21-1-5 that can slide in the corresponding adjustment holes 1-1, so that the base 21-1 and the base 1 can move within a certain range. The extending direction of the adjustment holes 1-1 is the sliding direction of the slide rail, that is, the base 21-1 can adjust its position on the base 1 along the sliding direction of the slide rail. A regulator 29 is rotatably provided on the base 1. The regulator 29 is of a knob structure. One side of the regulator 29 is provided with a spiral groove. The base 21-1 is provided with a boss 21-1-6 that cooperates with the spiral groove. The boss 21-1-6 is crescent-shaped. By rotating the regulator 29, the front and rear positions of the base 21-1 on the base 1 can be changed to adjust the pressing gap of the slide rail or the drawer. To facilitate the positioning of the regulator 29, a positioning piece 1-2 is provided on the base 1 on one side of the regulator 29. Convex points can be formed by inward stamping on the positioning piece 1-2. A number of grooves are arranged along the circumferential direction on the other side of the regulator 29. The cooperation between the grooves and the convex points on the positioning piece 1-2 can form the positioning of the regulator 29.

[0074] The opening and closing processes of the slide rail installed with the above-mentioned bounce damping device are as follows:

[0075] When the slide rail or drawer is in the closed state, the gearbox 22 is at the first position and locked at this time. The transmission gear 22-2 in the gearbox 22 can rotate clockwise or counterclockwise. Therefore, the movable rail 6-2 or the drawer panel can be normally pulled open or closed. When the movable rail 6-2 or the drawer panel is pressed, the gearbox 22 is triggered to unlock and rebound by triggering the transmission block 23. The gearbox 22 moves outward under the action of the rebound spring 26. At this time, the transmission gear 22-2 does not rotate counterclockwise and can drive the rack 6-4 to move outward, ejecting the movable rail 6-2. At the same time, the self-closing spring seat 32 and the self-closing chuck 36 also move with the gearbox 22, so that the self-closing spring 33 does not hinder the rebound of the movable rail 6-2. The gearbox 22 rebounds to the second position. At this time, the movable rail 6-2 continues to move outward under the action of inertia (or pulls the movable rail 6-2 to move outward). The self-closing dial pin 6-5 on the movable rail 6-2 drives the self-closing chuck 36 to move outward. When the self-closing chuck 36 moves to the corner 31-3 of the self-closing damping bracket 31, the self-closing chuck 36 rotates and engages with the corner 31-3 along the corner 31-3 and disengages from the self-closing dial pin 6-5. The movable rail 6-2 is released from the pulling force of the self-closing spring 33 and is in a free state. The movable rail 6-2 continues to move outward until the movable rail 6-2 is fully ejected.

[0076] When closing the drawer or the slide rail, push the movable rail 6-2 to move inward. Since the transmission gear 22-2 in the gearbox 22 cannot rotate counterclockwise at this time, the rack 6-4 of the movable rail 6-2 meshes with the transmission gear 22-2 to drive the gearbox 22 to move inward accordingly, moving the gearbox 22 from the second position to the first position. At this time, the rebound spring 26 is pulled out to store energy. At the same time, the self-closing spring seat 32 moves inward with the gearbox 22, stretching the self-closing spring 33 to store energy. During this process, the sliding pin 22-6-2 of the clutch arm 22-6 in the gearbox 22 enters the clamping groove 21-1-1c from the straight groove section 21-1-1a through the arc-shaped guide groove 21-1-1b. The clutch arm 22-6 is separated from the stop gear 22-5. At this time, the transmission gear 22-2 can rotate counterclockwise, and the gearbox 22 is locked at the first position. The movable rail 6-2 continues to move inward. When the self-closing dial pin 6-5 touches the self-closing chuck 36, it triggers the self-closing chuck 36 to rotate. The self-closing chuck 36 combines with the self-closing dial pin 6-5. Under the action of the self-closing spring 33, it pulls the self-closing dial pin 6-5 to move inward, driving the movable rail 6-2 and the drawer to move inward as well. At the same time, the damper 34 starts to work, generating a force opposite to that of the self-closing spring 33 to achieve a buffering effect. Under the action of the self-closing spring 33, the movable rail 6-2 continues to move inward, and the drawer moves inward accordingly until the movable rail 6-2 or the drawer is completely closed.

[0077] The above has schematically described the present utility model and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design, without creative efforts, structural modes and embodiments similar to the technical solution without departing from the purpose of the present utility model, they shall fall within the protection scope of the present utility model.

Claims

1. A functional conversion structure of a rebound damping device, characterized in that: It includes a conversion handle (4) provided on a rebound damping device. The rebound damping device has a trigger transmission block (23) provided inside a housing (21). There is a pressing gap (W) between the trigger transmission block (23) and the housing (21). The unlocking and rebounding of the rebound damping device are achieved by pressing the trigger transmission block (23). The conversion handle (4) is provided on the housing (21) or the trigger transmission block (23), and the conversion handle (4) has a lock position and an unlock position that can be switched with each other. In the lock position, the conversion handle (4) abuts between the trigger transmission block (23) and the housing (21) to eliminate the pressing movement space of the trigger transmission block (23); in the unlock position, the conversion handle (4) disengages from the abutting state so that the trigger transmission block (23) can be normally pressed.

2. The functional conversion structure of the rebound damping device according to claim 1, characterized in that: There is a positioning structure between the conversion handle (4) and the housing (21) or the trigger transmission block (23) in both the above-mentioned lock position and unlock position.

3. The functional conversion structure of the rebound damping device according to claim 1 or 2, characterized in that: The conversion handle (4) is rotatably provided on the trigger transmission block (23). One side of the housing (21) has an abutting portion (21-1a). The conversion handle (4) rotates and switches between the above-mentioned lock position and unlock position. In the lock position, the conversion handle (4) abuts on the abutting portion (21-1a) of the housing (21); in the unlock position, the conversion handle (4) disengages from the abutting portion (21-1a) of the housing (21).

4. The functional conversion structure of the bounce damping device according to claim 3, characterized in that: One end of the conversion handle (4) has an abutting head (4-1) that can abut and cooperate with the above-mentioned abutting portion (21-1a), and the other end has a rotation operation portion (4-2) located outside the housing (21). The middle part of the conversion handle (4) has a rotation shaft (4-3) rotatably installed on the trigger transmission block (23).

5. The functional conversion structure of the bounce damping device according to claim 4, characterized in that: The trigger transmission block (23) has a first positioning protrusion (23-1a) and a second positioning groove (23-1b). The conversion handle (4) correspondingly has a first positioning groove (4-1a) and a second positioning protrusion (4-1b). In the lock position, the first positioning groove (4-1a) cooperates with the first positioning protrusion (23-1a) to keep the conversion handle (4) in the lock position; in the unlock position, the second positioning protrusion (4-1b) cooperates with the second positioning groove (23-1b) to keep the conversion handle (4) in the unlock position.

6. A rebound damping device, comprising a rebound component (2) and a damping self-closing component (3) arranged on one side of the rebound component (2), wherein the rebound component (2) includes a housing (21), a pressing and rebounding mechanism arranged in the housing (21), and a trigger transmission block (23). There is a pressing gap (W) between the trigger transmission block (23) and the housing (21). By pressing the trigger transmission block (23), the pressing and rebounding mechanism is unlocked and rebounds. It is characterized in that: It also includes a conversion handle (4) provided on the housing (21) or the trigger transmission block (23). The conversion handle (4) has a lock position and an unlock position that can be switched with each other. In the lock position, the conversion handle (4) abuts between the trigger transmission block (23) and the housing (21) to eliminate the pressing movement space of the trigger transmission block (23); in the unlock position, the conversion handle (4) disengages from the abutting state so that the trigger transmission block (23) can be normally pressed.

7. The rebound damping device according to claim 6, characterized in that: The pressing and rebounding mechanism of the rebounding component (2) includes a gearbox (22) and a rebounding spring (26). A transmission gear (22-2) and a clutch mechanism for switching between bidirectional rotation and unidirectional rotation of the transmission gear (22-2) are provided in the gearbox (22). At least part of the teeth of the transmission gear (22-2) are exposed outside the gearbox (22). The gearbox (22) is arranged in a housing (21) and can slide between a first position and a second position. When the gearbox (22) is in the first position, the clutch mechanism releases the transmission gear (22-2) to enable it to rotate bidirectionally. When the gearbox (22) moves out of the first position, the clutch mechanism locks the rotational freedom of one direction of the transmission gear (22-2) to enable it to rotate only unidirectionally. The gearbox (22) and the housing (21) have a locking structure at the first position. The rebounding spring (26) is arranged between the gearbox (22) and the housing (21) and is used to keep the gearbox (22) in an elastic tendency to move from the first position to the second position. There is a matching relationship between the trigger transmission block (23) and the above locking structure, which unlocks the gearbox (22) at the first position after pressing the trigger transmission block (23) and rebounds it to the second position under the action of the rebounding spring (26).

8. The rebound damping device according to claim 7, wherein: The damping self-closing component (3) includes a self-closing damping frame (31), a self-closing spring seat (32), a self-closing spring (33), a damper (34) and a self-closing chuck (36). The self-closing spring seat (32) is slidably arranged in the self-closing damping frame (31) along the moving direction of the gearbox (22). One end of the self-closing spring (33) is connected to the self-closing spring seat (32), and the other end of the self-closing spring (33) is connected to the self-closing chuck (36). The damper (34) is arranged in the self-closing damping frame (31) and is connected to the self-closing chuck (36). One end of the self-closing spring seat (32) abuts against the gearbox (22). When the gearbox (22) rebounds from the first position to the second position, the self-closing spring seat (32) can move towards the gearbox (22) under the pulling of the self-closing spring (33). When the gearbox (22) moves from the second position to the first position, the self-closing spring seat (32) moves with the gearbox (22) to stretch and store energy in the self-closing spring (33).

9. The rebound damping device according to claim 7 or 8, characterized in that: The transmission gear (22-2) is installed on a rotating shaft (22-3) through a one-way bearing (22-4). The clutch mechanism includes a stop gear (22-5) fixed on the rotating shaft (22-3) and a clutch arm (22-6) installed in the gearbox (22). A sawtooth (22-6-4) capable of meshing with or separating from the stop gear (22-5) is provided on the clutch arm (22-6). At the first position, the clutch arm (22-6) is disengaged from the stop gear (22-5). During the process of the gearbox (22) moving out of the first position and towards the second position, the clutch arm (22-6) meshes with the stop gear (22-5).

10. The anti-bounce damping device according to claim 9, wherein: The locking structure between the gearbox (22) and the housing (21) includes a sliding pin (22-6-2) provided at one end of the clutch arm (22-6) and a track groove (21-1-1) provided inside the housing (21). The clutch arm (22-6) is rotatably mounted in the gearbox (22) through a swing shaft (22-6-1). The sliding pin (22-6-2) is slidably engaged in the track groove (21-1-1). The track groove (21-1-1) has a straight groove section (21-1-1a), an arc-shaped guide groove (21-1-1b) located at one end of the straight groove section (21-1-1a) close to the first position, and a clamping groove (21-1-1c). The sliding pin (22-6-2) can be guided from the straight groove section (21-1-1a) through the arc-shaped guide groove (21-1-1b) into the clamping groove (21-1-1c) to form the locking of the gearbox (22) at the first position. A trigger pin (22-6-3) is further provided on one side of the clutch arm (22-6). A synchronous trigger block (24) is provided at one end of the trigger transmission block (23) close to the first position. The synchronous trigger block (24) has a rebound unlocking portion (24-2), and the rebound unlocking portion (24-2) has a pushing inclined surface (24-3) capable of cooperating with the trigger pin (22-6-3). At the first position, when the trigger transmission block (23) is pressed, the rebound unlocking portion (24-2) moves towards the distal end, and the pushing inclined surface (24-3) pushes the trigger pin (22-6-3) to cause the clutch arm (22-6) to swing towards the stop gear (22-5), prompting the sliding pin (22-6-2) to disengage from the clamping groove (21-1-1c) and enter the straight groove section (21-1-1a) to unlock. At the same time, the clutch arm (22-6) meshes with the stop gear (22-5).

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