Rebound damping device for sliding rail and sliding rail with rebound damping device

Abstract

The utility model discloses a rebound damping device for a sliding rail and the sliding rail with the rebound damping device, and belongs to the technical field of sliding rails. The device comprises a base, a rebounding assembly and a damping self-closing assembly, the rebounding assembly comprises a shell, a gearbox, a trigger transmission block and a rebounding tension spring, the damping self-closing assembly comprises a self-closing damping frame, a self-closing tension spring seat, a self-closing tension spring, a damper and a self-closing chuck, a transmission gear and a clutch mechanism are arranged in the gearbox, and the transmission gear and the clutch mechanism are arranged in the gearbox. The gearbox is arranged in the shell and can slide between a first position and a second position, when the gearbox is located at the first position, the clutch mechanism releases the transmission gear so that the transmission gear can rotate in two directions, and when the gearbox is separated from the first position, the clutch mechanism locks the transmission gear so that the transmission gear can only rotate in one direction; the gearbox and the shell are provided with a locking structure controlled by the pressing action at the first position. According to the utility model, the matching stability of the pressing rebounding function and the damping closing function is better, the reliability cannot be reduced due to factors such as installation errors, and the product consistency is good.

Description

Technical Field

[0001] The utility model relates to a slide rail fitting, and more specifically, to a rebound damping device for a slide rail and a slide rail with the rebound damping device. Background Art

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

[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 touch unlocking member, an accumulator, and a locking rod. During the advancement process of the rebound device, the energy storage of the rebound device is achieved by the cooperation of the pushing mechanism and the striker chuck, 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 pushes open the stop portion of the touch 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, and a smooth transition with the damper can be achieved. However, the above-mentioned rebound device and the damping device are independent of each other, and the two are independently installed on the slide rail. Due to factors such as installation and processing errors, it is usually necessary to adjust the relative positions of the rebound device and the damping device on the slide rail to ensure their stable cooperation in function, which increases the assembly process, and the cooperation stability of the damping closing and push-and-rebound functions is not easy to ensure, which is not conducive to the consistency of the product. 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 deficiencies of the prior art, such as the poor stability of the cooperation between the damping closing and the pressing and rebounding functions. A rebound damping device for a slide rail and a slide rail with the rebound damping device are provided. By adopting the technical solution of the present utility model, the rebound component and the damping self-closing component are organically combined. The pressing and unlocking rebound of the gearbox is utilized, and the two-way rotation and one-way rotation switching design of the transmission gear in the gearbox is combined, so that the cooperation stability of the pressing and rebounding and the damping closing functions is better, and the reliability will not be reduced due to factors such as installation errors, and the product consistency is good. Moreover, when the gearbox rebounds, the self-closing tension spring can move along with it and will not hinder the pressing and rebounding function. When the gearbox resets and stores energy, the self-closing tension spring can also be stretched and store energy together, ensuring the working stability of the rebound damping device. At the same time, with the above-mentioned gearbox design, the slide rail can be pulled open and can also be normally closed, and can be used as a normal damping slide rail, which can meet 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 rebound damping device for a slide rail of the present utility model includes a base, a rebound component and a damping self-closing component. The rebound component and the damping self-closing component are arranged on the base, and the damping self-closing component is located on one side of the rebound component. Among them:

[0009] The rebound component includes a housing, a gearbox, a trigger transmission block and a rebound tension spring. A transmission gear and a clutch mechanism for switching the two-way rotation and one-way rotation of the transmission gear are arranged in the gearbox. At least part of the teeth of the transmission gear are exposed outside the gearbox for meshing with the corresponding rack on the slide rail. The gearbox is arranged in the housing and can slide between a first position and a second position. When the gearbox is in the first position, the clutch mechanism releases the transmission gear so that it can rotate in two directions. When the gearbox leaves the first position, the clutch mechanism locks the rotational freedom of one direction of the transmission gear so that it can only rotate in one direction. The gearbox and the housing have a locking structure at the first position. The rebound tension spring is arranged between the gearbox and the housing and is used to keep the gearbox in an elastic trend of moving from the first position to the second position. The trigger transmission block is movably arranged in the housing, and there is a cooperation relationship between the trigger transmission block and the above-mentioned locking structure, so that after pressing the trigger transmission block, the gearbox at the first position is unlocked and rebounds to the second position under the action of the rebound tension spring;

[0010] The damping self-closing component 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.

[0011] Further, the transmission gear is installed in the gearbox through a one-way mechanism, so that the transmission gear can only rotate forward relative to the one-way mechanism. The clutch mechanism cooperates with the one-way mechanism. At the first position, the clutch mechanism is disengaged from the one-way mechanism so that the transmission gear can rotate forward and backward. During the process of the gearbox moving away from the first position and moving towards the second position, the clutch mechanism is combined with the one-way mechanism so that the transmission gear can only rotate forward.

[0012] Further, the one-way mechanism is a one-way bearing, and the transmission gear is installed on the rotating shaft through the 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 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 meshes with the stop gear.

[0013] Further, 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 inside the housing. The clutch arm is rotatably installed 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-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 arc-shaped guide groove from the straight groove section into the clamping groove to form the locking of the gearbox at the first position. One side of the clutch arm is also provided with a trigger pin. One end of the trigger transmission block close to the first position is provided with a synchronous trigger block. The synchronous trigger block has a rebound unlocking part, and the rebound unlocking part has a pushing inclined surface that can cooperate with the trigger pin. At the first position, the trigger transmission block is pressed by the slide rail to move the rebound unlocking part towards the distal end. 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. At the same time, the clutch arm meshes with the stop gear.

[0014] Furthermore, the synchronous trigger block and the trigger transmission block are separately arranged, and the synchronous trigger block is provided with a trigger extension arm abutting against the trigger transmission block, a first reset spring is provided between the trigger transmission block and the shell, and a second reset spring is provided between the synchronous trigger block and the shell, and a toggle groove is also provided at one end of the synchronous trigger block, a synchronous rotating shaft is provided in the shell, and a protruding tongue that can be inserted into the toggle groove is provided on the synchronous rotating shaft.

[0015] Furthermore, the gear box has a box body that can slide in the shell, and the box body includes an intermediate box body, an upper cover plate and a lower cover plate, the upper cover plate is installed on the upper part of the intermediate box body to form an upper mounting cavity for accommodating the transmission gear, and the lower cover plate is installed on the lower part of the intermediate box body to form a lower mounting cavity for accommodating the stop gear and the clutch arm; the self-closing tension spring seat is provided with an abutting portion that abuts against the intermediate box body, and a buffer spring sheet that cooperates at the second position is provided between the intermediate box body and the shell.

[0016] Furthermore, one end of the self-closing damping frame has a guide portion, the guide portion is provided with a guide rib, the end of the guide rib is provided with a corner, the self-closing clamp is connected to the self-closing tension spring and the damper through a self-closing slider, the self-closing clamp is rotatably mounted on the self-closing slider, and the self-closing clamp has a clamp groove for cooperating with the self-closing dial pin on the slide rail, a guide groove slidably cooperating with the guide rib, and a corner groove cooperating with the corner.

[0017] Furthermore, a rotating wheel is provided in the shell, one end of the rebound tension spring is connected to the gear box, and the other end bypasses the rotating wheel and is connected to the rebound tension spring seat. One side of the shell is provided with at least two levels of slots for engaging with the rebound tension spring seat, and the rebound tension force is adjusted by changing the position of the rebound tension spring seat on the shell.

[0018] Furthermore, the base is provided with a plurality of adjustment holes, the shell includes a base and an upper cover, the base is provided with a plurality of buckles that can slide in the corresponding adjustment holes, an adjuster is rotatably provided on the base, a spiral groove is provided on one side of the adjuster, and a boss matching the spiral groove is provided on the base, and the front and rear position of the base on the base can be changed by rotating the adjuster.

[0019] The utility model discloses a slide rail with the above-mentioned rebound damping device for the slide rail.

[0020] 3. Beneficial effects

[0021] Compared with the existing known technologies, the technical solution provided by the utility model has the following beneficial effects:

[0022] (1) A rebound damping device for a slide rail and a slide rail with the rebound damping device according to the present utility model, which comprises a base, a rebound assembly and a damping self-closing assembly. The rebound assembly and the damping self-closing assembly are arranged on the base, and the damping self-closing assembly is located on one side of the rebound assembly. The rebound assembly includes a housing, a gear box, a trigger transmission block and a rebound 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 moves away 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 trigger transmission block is movably arranged in the housing, and there is a cooperation relationship between the trigger transmission block and the above locking structure, so that after pressing the trigger transmission block, the gear box at the first position is unlocked and rebounds to the second position under the action of the rebound spring. 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. 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 direction 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. The rebound assembly and the damping self-closing assembly are organically combined. By using the pressing and unlocking rebound of the gear box and matching with the design of the bidirectional rotation and unidirectional rotation switching of the transmission gear in the gear box, the cooperation stability of the pressing rebound and damping closing functions is better, and the reliability will not be reduced due to factors such as installation errors, and the product consistency is good. Moreover, when the gear box rebounds, the self-closing spring can move along, which will not hinder the pressing rebound function. When the gear box is reset and stores energy, the self-closing spring can also stretch and store energy together, ensuring the working stability of the rebound damping device. At the same time, with the above gear box design, the slide rail can be pulled open and can also be normally closed, and can be used as a normal damping slide rail, which can meet different usage scenarios.

[0023] (2) A rebound damping device for a slide rail and a slide rail with the rebound damping device according to the present utility model, the transmission gear is installed in the gear box through a one-way mechanism, so that the transmission gear can only rotate forward relative to the one-way mechanism. The clutch mechanism cooperates with the one-way mechanism. At the first position, the clutch mechanism is disengaged from the one-way mechanism so that the transmission gear can rotate forward and backward. During the process of the gear box moving away from the first position and moving to the second position, the clutch mechanism is combined with the one-way mechanism so that the transmission gear can only rotate forward. With the above design of the clutch mechanism and the one-way mechanism, the transmission gear can freely switch between forward and backward rotation and unidirectional rotation. Under the condition of meeting the normal opening and closing of the slide rail, the pressing rebound and elastic energy storage of damping closing can be realized through the movement of the gear box, and the cooperation is stable and reliable.

[0024] (3) The utility model provides a rebound damping device for a slide rail and a slide rail with the rebound damping device, wherein the one-way mechanism is a one-way bearing, and the transmission gear is installed on the rotating shaft through the one-way bearing; the clutch mechanism includes a stop gear fixed on the rotating shaft and a clutch arm installed in the gear box, and the clutch arm is provided with saw teeth that can engage with or separate from the stop gear. At the first position, the clutch arm is disengaged from the stop gear; when the gear box is disengaged from the first position and moves to the second position, the clutch arm is engaged with the stop gear; the one-way bearing is used to realize the one-way rotation of the transmission gear, and the structure is simple and compact. The clutch arm cooperates with the stop gear to realize the locking or unlocking of the rotating shaft, and then the transmission gear can be switched between forward and reverse rotation and one-way rotation. The structural design is simple and the manufacturing and assembly are convenient.

[0025] (4) The utility model provides a rebound damping device for a slide rail and a slide rail with the rebound damping device, wherein the locking structure between the gear box and the shell comprises a sliding pin arranged at one end of a clutch arm and a track groove arranged on the inner side of the shell, the track groove comprising a straight groove section, an arc-shaped guide groove and a clamping groove located at one end of the straight groove section close to the first position, the sliding pin can be guided by the straight groove section through the arc-shaped guide groove into the clamping groove, thereby forming a locking of the gear box at the first position, and a trigger pin is also provided on one side of the clutch arm. At the first position, the trigger transmission block is pressed by the slide rail to move the rebound unlocking part toward the far end, and the pushing inclined surface pushes the trigger pin to cause the clutch arm to swing toward the stop gear direction, thereby causing 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 is meshed with the stop gear; the meshing or separation between the track groove and the clutch arm and the stop gear is realized by the cooperation of the track groove and the clutch arm, and the pushing inclined surface on the rebound unlocking part is used to make the clutch arm swing, unlock and rebound, the structural design is simple and ingenious, easy to assemble and manufacture, and the pressing rebound trigger is stable and reliable.

[0026] (5) The utility model provides a rebound damping device for a slide rail and a slide rail with the rebound damping device, wherein a synchronous trigger block and a trigger transmission block are separately arranged, a trigger extension arm abutting against the trigger transmission block is arranged on the synchronous trigger block, a first reset spring is arranged between the trigger transmission block and the shell, a second reset spring is arranged between the synchronous trigger block and the shell, a toggle groove is also arranged at one end of the synchronous trigger block, a synchronous rotating shaft is arranged in the shell, and a protruding tongue that can be inserted into the toggle groove is arranged on the synchronous rotating shaft. The synchronous trigger block and the synchronous rotating shaft cooperate to realize synchronous action of the two groups of slide rails, so that no matter which side is pressed, the two groups of slide rails can be synchronously unlocked and rebounded, thereby avoiding jamming due to asynchronous unlocking of the two sides.

[0027] (6) The utility model provides a rebound damping device for a slide rail and a slide rail with the rebound damping device, wherein a buffer spring sheet matching with the second position is provided between the intermediate box body and the shell body, which can reduce the collision noise generated by the rebound and improve the product texture.

[0028] (7) A rebound damping device for a slide rail of the present utility model and a slide rail with the rebound damping device. The self-closing chuck and the guiding rib are matched by a corner groove and a corner structure. By using the eccentric action of the chuck groove and the rotation center of the self-closing chuck, when the self-closing chuck moves to the corner, it automatically swings, realizing the combination or separation of the self-closing chuck and the self-closing dial pin, and the locking or unlocking of the self-closing chuck and the guiding rib. The structure is simple and the conversion is stable.

[0029] (8) A rebound damping device for a slide rail of the present utility model and a slide rail with the rebound damping device. A rotating wheel is provided inside the housing. One end of the rebound tension spring is connected to the gearbox, and the other end bypasses the rotating wheel and is connected to the rebound tension spring seat. At least two levels of card slots for clamping with the rebound tension spring seat are provided on one side of the housing. By changing the position of the rebound tension spring seat on the housing, the rebound tension can be adjusted, and the slide rail rebound force can be flexibly adjusted according to needs, meeting the rebound requirements of different usage occasions.

[0030] (9) A rebound damping device for a slide rail of the present utility model and a slide rail with the rebound damping device. A number of adjustment holes are provided on the base, and a number of buckles that can slide in the corresponding adjustment holes are provided on the base of the housing. A regulator is rotatably provided on the base. A spiral groove is provided on one side of the regulator, and a boss that matches the spiral groove is provided on the base. By rotating the regulator to change the front-back position of the base on the base, it is convenient to adjust the pressing gap to eliminate the influence of the slide rail installation error. Description of the Drawings

[0031] Figure 1 is a three-dimensional structural schematic diagram of a rebound damping device for a slide rail of the present utility model;

[0032] Figure 2 is a three-dimensional structural schematic diagram of a rebound damping device for a slide rail of the present utility model (in the state of omitting the upper cover);

[0033] Figure 3 is an overall split structural schematic diagram of a rebound damping device for a slide rail of the present utility model;

[0034] Figure 4 is a structural schematic diagram of the internal cooperation relationship of the housing of a rebound damping device for a slide rail of the present utility model;

[0035] Figure 5 is a back structural schematic diagram of the internal cooperation relationship of the housing of a rebound damping device for a slide rail of the present utility model;

[0036] Figure 6 is an internal structural schematic diagram of the base in a rebound damping device for a slide rail of the present utility model;

[0037] Figure 7 The schematic diagram of the back structure of the base in a rebound damping device for a slide rail of the present utility model;

[0038] Figure 8 The overall structural schematic diagram of the gearbox in a rebound damping device for a slide rail of the present utility model;

[0039] Figure 9 The disassembled structural schematic diagram of the gearbox in a rebound damping device for a slide rail of the present utility model;

[0040] Figure 10 The schematic diagram of the cooperation structure between the clutch arm and the stop gear in a rebound damping device for a slide rail of the present utility model;

[0041] Figure 11 The schematic diagram of the cooperation structure between the transmission gear and the clutch arm in a rebound damping device for a slide rail of the present utility model;

[0042] Figure 12(a) is the schematic diagram of the cooperation state between the transmission gear and the clutch arm when the gear box is in the first position in the present utility model;

[0043] Figure 12(b) is the schematic diagram of the pressing and unlocking state when the gear box is in the first position in the present utility model;

[0044] Figure 12(c) is the schematic diagram of the cooperation state between the transmission gear and the clutch arm when the gear box is in the second position in the present utility model;

[0045] Figure 13 The disassembled structural schematic diagram of the damping self-closing component in a rebound damping device for a slide rail of the present utility model;

[0046] Figure 14(a) is the schematic diagram of the self-closing chuck of the damping self-closing component in the present utility model when it is in the state of being engaged with the self-closing dial pin;

[0047] Figure 14(b) is the schematic diagram of the self-closing chuck of the damping self-closing component in the present utility model when it is in the state of being separated from the self-closing dial pin;

[0048] Figure 15 The structural schematic diagram of a slide rail with a rebound damping device of the present utility model.

[0049] Explanation of the reference numerals in the schematic diagram:

[0050] 1. Base; 1-1. Adjusting hole; 1-2. Positioning piece; 2. Rebound assembly; 21. Housing; 21-1. Base; 21-1-1. Track 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. Snap fastener; 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; 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 chute; 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. Synchronous rod; 5. Slide rail assembly; 5-1. Fixed rail; 5-2. Movable rail; 5-3. Rack fixing seat; 5-4. Rack; 5-5. Self-closing dialing pin; 5-6. Trigger piece. Detailed implementation manners

[0051] To further understand the content of the present utility model, the present utility model will be described in detail in combination with the accompanying drawings and embodiments.

[0052] [Embodiment]

[0053] Combined with Figures 1 to 3 As shown in the figure, a rebound damping device for a slide rail in this embodiment is installed on the slide rail and used to realize the functions of pressing and rebounding and damping closing of the slide rail. The rebound damping device for the slide rail includes a base 1, a rebound assembly 2 and a damping self-closing assembly 3. The rebound assembly 2 and the damping self-closing assembly 3 are arranged on the base 1, and the damping self-closing assembly 3 is located on one side of the rebound assembly 2, wherein:

[0054] The rebound assembly 2 includes a housing 21, a gearbox 22, a trigger drive block 23, and a rebound spring 26. A transmission gear 22-2 and a clutch mechanism for switching the bidirectional rotation and unidirectional rotation of the transmission gear 22-2 are provided inside the gearbox 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 gearbox 22 for meshing with the corresponding rack on the slide rail. Generally, this rebound damping device can be installed on the fixed rail of the slide rail or in the drawer cabinet through the base 1. A rack is correspondingly installed on the movable rail of the slide rail or on the drawer, and this rack meshes with the transmission gear 22-2 of the gearbox 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 gearbox 22 to move inward together until the gearbox 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 rebound process of the gearbox 22, the same is true for the transmission gear 22-2, that is, the gearbox 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 gearbox 22 is arranged inside the 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 so that it can 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 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 gearbox 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 rebound and reset process of the gearbox 22 to the first position. In this way, the rebound of the gearbox 22 can be used to drive the rebound of the slide rail or the drawer, and the closing of the slide rail or the drawer can also be used to drive the reset of the gearbox 22. The gearbox 22 and the housing 21 have a locking structure at the first position. The rebound spring 26 is arranged between the gearbox 22 and the housing 21 and is used to keep the gearbox 22 in an elastic trend of moving from the first position to the second position. After the gearbox 22 moves to the first position, it can be locked through the locking structure. The trigger drive block 23 is movably arranged inside the housing 21, and there is a cooperation relationship between the trigger drive block 23 and the above-mentioned locking structure that unlocks the gearbox 22 at the first position and rebounds it to the second position under the action of the rebound spring 26 after pressing the trigger drive block 23. That is to say, when pressing the slide rail or the drawer inward, the trigger piece 5-6 on the slide rail or the drawer will drive the trigger drive block 23 to move, and the trigger drive block 23 will drive the locking structure to unlock the gearbox 22, and the gearbox 22 can rebound under the action of the rebound spring 26.

[0055] The damping self-closing component 3 includes a self-closing damping bracket 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 bracket 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 bracket 31 and 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 5-5 on the slide rail or the drawer, 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. At this time, the self-closing spring 33 is basically in a relatively relaxed state, so the self-closing spring 33 will not affect the rebound of the slide rail or the drawer; 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.

[0056] In this embodiment, the transmission gear 22-2 can rotate forward and backward 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, so that when the gearbox 22 rebounds, it can drive the slide rail or the drawer to bounce open together, and when the slide rail or the drawer closes, it can drive the slide rail or the drawer back to the first position to store energy. The switching between the two states of forward and backward rotation and one-way rotation of the transmission gear 22-2 can be achieved by using an existing structure, such as a ratchet mechanism. At the first position, the ratchet mechanism is released so that the transmission gear 22-2 can rotate forward and backward. After leaving the first position, the ratchet mechanism comes into play, making the transmission gear 22-2 only able to rotate in one direction. Specifically, in this embodiment, the transmission gear 22-2 is installed in the gearbox 22 through a one-way mechanism, enabling the transmission gear 22-2 to only rotate forward relative to the one-way mechanism. The clutch mechanism cooperates with the one-way mechanism. At the first position, the clutch mechanism is disengaged from the one-way mechanism so that the transmission gear 22-2 can rotate forward and backward; during the process of the gearbox 22 moving away from the first position and moving towards the second position, the clutch mechanism is combined with the one-way mechanism so that the transmission gear 22-2 can only rotate forward. That is, the one-way mechanism enables the transmission gear 22-2 to only rotate forward (clockwise) relative to the one-way mechanism. By locking or unlocking the one-way mechanism through the clutch mechanism, the one-way mechanism can be switched between the two states of free rotation and fixation, thereby realizing the functions of forward and backward rotation and one-way rotation of the transmission gear 22-2. With the above design of the clutch mechanism and the one-way mechanism, the transmission gear can freely switch between forward and backward rotation and one-way rotation. Under the condition of meeting the normal opening and closing of the slide rail, the elastic energy storage of pressing and rebounding and damping closing can be realized through the movement of the gearbox 22, and the cooperation is stable and reliable. As Figures 9 to 11As shown, as a preferred embodiment, the above-mentioned one-way mechanism is a one-way bearing 22-4. A one-way bearing 22-4 is a bearing that can rotate freely in one direction and is locked in the other direction. It is also called an overrunning clutch and is an existing mature product. The transmission gear 22-2 is installed on the rotating shaft 22-3 through the 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. The clutch arm 22-6 is provided with saw teeth 22-6-4 that can engage or disengage with the stop gear 22-5. In the first position, the clutch arm 22-6 disengages 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 forward and backward; 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. After being press-fitted, they form a whole. The outer ring of the one-way bearing and the inner hole of the transmission gear 22-2 are also tightly fitted. The one-way bearing and the transmission gear 22-2 are press-fitted to form a whole. After the one-way bearing 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. Using the one-way bearing to achieve the one-way rotation of the transmission gear, 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 achieved, and thus the transmission gear 22-2 can be switched between forward and backward rotation and one-way rotation. The structural design is simple, and the manufacturing and assembly are convenient.

[0057] Refer to Figure 3 , Figure 6 and in combination with Figures 12(a) to 12(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. The trigger pin 22-6-3 deviates from the connecting line between the swing shaft 22-6-1 and the sliding pin 22-6-2 to one side. 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 yaws to one side from the straight groove section 21-1-1a through the arc-shaped guide groove 21-1-1b, causing the clutch arm 22-6 to disengage 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, the trigger transmission block 23 is pressed by the slide rail, causing the rebound unlocking portion 24-2 to move towards the distal end. The pushing inclined surface 24-3 pushes the trigger pin 22-6-3, causing the clutch arm 22-6 to yaw 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 position of the left and right swing of the sliding pin 22-6-2. The engagement or separation with the stop gear 22-5 is realized through the cooperation of the track groove 21-1-1 and the clutch arm 22-6. The pushing inclined surface 24-3 on the rebound unlocking portion 24-2 is used to make the clutch arm 22-6 swing, unlock and rebound. The structural design is simple and ingenious, easy to assemble and manufacture, and the pressing and rebound triggering are stable and reliable.

[0058] As Figures 12(a) to 12(c)As shown, through the simplified component orientation diagram, the mating relationship between the transmission gear 22-2 and the clutch arm 22-6 can be seen when the gearbox 22 is in different positions. In Fig. 12(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 through 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 to limit the gearbox 22 in the first position. In the state of Fig. 12(a), the slide rail or the drawer can be pulled out or closed normally, and together with the damping self-closing component 3, it can be used as a normal damping slide rail. As shown in Fig. 12(b), when the slide rail or the drawer is moved by pressing, the transmission block 23 is triggered to move 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. As a result, the sliding pin 22-6-2 disengages 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. Fig. 12(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, it will drive the gearbox 22 to move to the first position, lock again after returning to the first position, and the rebound spring 26 is stretched and energized.

[0059] 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 4 and Figure 5As 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 4. 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 4 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 4, the passive synchronization shaft 25 drives the synchronization trigger block 24 matched therewith to move for unlocking, without driving the corresponding trigger transmission block 23 to move, thereby reducing the transmission path and resistance.

[0060] like Figure 8 and Figure 9As shown, the above-mentioned drive 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 within 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 mounting cavity for accommodating the drive 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 mounting cavity for accommodating the stop gear 22-5 and the clutch arm 22-6. The lower cover plate 22-1-3 is also provided with kidney-shaped holes 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. After the sliding pin 22-6-2 and the trigger pin 22-6-3 pass through the corresponding kidney-shaped holes 22-1-3a, they cooperate with the corresponding rebound unlocking part 24-2 and the track groove 21-1-1. The self-closing spring seat 32 is provided with an abutting part 32-1 that abuts against the intermediate box body 22-1-1. The abutting part 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. In order to prevent the gearbox 22 from generating impact noise when rebounding, a buffer spring piece is provided between the intermediate box body 22-1-1 and the housing 21 to cooperate at the second position. 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. During the rebound 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.

[0061] Refer to Figure 13As shown in FIGS. 14(a) and 14(b), a damper mounting groove 31-5 and a draw spring seat sliding groove 31-4 are provided on the self-closing damper bracket 31. The damper 34 is fixed in the damper mounting groove 31-5, and the self-closing draw spring seat 32 is slidably mounted in the draw spring seat sliding groove 31-4. One end of the self-closing damper bracket 31 has a guiding portion 31-1, on which guiding ribs 31-2 are provided. At the end of the guiding ribs 31-2, there is a corner 31-3. The self-closing chuck 36 is connected to the self-closing draw spring 33 and the damper 34 through the self-closing slider 35. The self-closing chuck 36 is rotatably mounted 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 5-5 on the slide rail, a guiding groove 36-2 for slidably cooperating with the guiding ribs 31-2, and a corner groove 36-3 for cooperating with the corner 31-3. As shown in FIG. 14(a), during the process of pulling the slide rail or the drawer from the closed state, the self-closing dial pin 5-5 engages 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 ribs 31-2 to maintain the state shown in FIG. 14(a), and the self-closing dial pin 5-5 can be kept in the chuck groove 36-1. Referring to FIG. 14(b), when the self-closing chuck 36 moves to the corner 31-3, it is rotated under the action of the corner groove 36-3, so that the self-closing dial pin 5-5 is separated from the chuck groove 36-1. At the same time, the corner groove 36-3 of the self-closing chuck 36 engages 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 the end close to the corner 31-3. During the process of closing the slide rail or the drawer from the pulled-out state, when the self-closing dial pin 5-5 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 5-5 engages with the chuck groove 36-1 and drives the self-closing dial pin 5-5 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, and the self-closing chuck 36 can automatically swing when it moves to the corner 31-3, 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 ribs 31-2. The structure is simple and the conversion is stable.

[0062] As Figures 3 to 6 shown, in this embodiment, a rotating wheel 27 is provided in the housing 21. The rotating wheel 27 is rotatably mounted on the mounting shaft 21-1-3 in the housing 21, so that the rotating wheel 27 can rotate freely. One end of the rebound draw spring 26 is connected to the gear box 22, and the other end bypasses the rotating wheel 27 and is connected to the rebound draw spring seat 28. At least two levels of card slots 21-1-2 for clamping with the rebound draw 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 draw spring seat 28 on the housing 21. As Figure 6As shown in the figure, three card slots 21-1-2 are provided on the housing 21. The rebound spring seats 28 correspond to different elongated states of the rebound spring 26 on different card slots 21-1-2, and thus correspond to different pulling forces, i.e., 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.

[0063] When installing the rebound damping device, generally, a certain pressing gap is left between the drawer panel and the cabinet body to facilitate pressing the drawer to trigger the rebound mechanism to eject the drawer. In reality, there may be installation errors, or factors such as the processing accuracy of the cabinet body and the drawer, resulting in the reserved pressing gap not meeting the requirements. Therefore, it is necessary to solve this problem by adjusting the pressing gap. As Figure 3 and Figure 7 shown in the figure, in this embodiment, a number of adjustment holes 1-1 are provided on the base 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. A number of buckles 21-1-5 that can slide in the corresponding adjustment holes 1-1 are provided on the base 21-1, 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, and 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 provided 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.

[0064] As Figure 15As shown in the figure, this embodiment also relates to a slide rail with the above-mentioned anti-bounce damping device for the slide rail. This slide rail mainly consists of a slide rail assembly 5 and the above-mentioned anti-bounce damping device. The slide rail assembly 5 includes a fixed rail 5-1 and a movable rail 5-2. The movable rail 5-2 is slidably arranged on the fixed rail 5-1. An intermediate rail can also be provided between the fixed rail 5-1 and the movable rail 5-2 to form a three-section rail. The above-mentioned anti-bounce damping device is fixed on the fixed rail 5-1 through a base 1. On one side of the movable rail 5-2, a rack 5-4 is installed through a rack fixing seat 5-3. The rack 5-4 meshes with a transmission gear 22-2 in the anti-bounce damping device. On one side of the movable rail 5-2, there is also an anti-closing dial 5-5 that cooperates with the anti-closing chuck 36 in the damping self-closing assembly 3 and a trigger piece 5-6 that cooperates with the trigger part 23-1 of the trigger transmission block 23 in the anti-bounce assembly 2.

[0065] The opening and closing processes of the slide rail with the above-mentioned anti-bounce damping device are as follows:

[0066] When the slide rail or the drawer is in the closed state, at this time, the gearbox 22 is in the first position and locked. The transmission gear 22-2 in the gearbox 22 can rotate clockwise or counterclockwise. Therefore, the movable rail 5-2 or the drawer panel can be normally pulled open or closed. When pressing the movable rail 5-2 or the drawer panel, the gearbox 22 is triggered to unlock and bounce through the trigger transmission block 23. The gearbox 22 moves outward under the action of the bounce spring 26. At this time, the transmission gear 22-2 does not rotate in the counterclockwise direction and can drive the rack 5-4 to move outward, ejecting the movable rail 5-2. At the same time, the self-closing spring seat 32 and the self-closing chuck 36 also move together with the gearbox 22, so that the self-closing spring 33 does not hinder the bounce of the movable rail 5-2. When the gearbox 22 bounces to the second position, at this time, the movable rail 5-2 continues to move outward under the action of inertia (or pulls the movable rail 5-2 to move outward). The anti-closing dial 5-5 on the movable rail 5-2 drives the anti-closing chuck 36 to move outward. When the anti-closing chuck 36 moves to the corner 31-3 of the anti-closing damping bracket 31, the anti-closing chuck 36 rotates and engages with the corner 31-3 along the corner 31-3 and disengages from the anti-closing dial 5-5. The movable rail 5-2 is released from the pulling force of the self-closing spring 33 and is in a free state. The movable rail 5-2 continues to move outward until the movable rail 5-2 is fully ejected.

[0067] When closing the drawer or the slide rail, the movable rail 5-2 is pushed to move inwards. Since the transmission gear 22-2 in the gearbox 22 cannot rotate counterclockwise at this time, the rack 5-4 of the movable rail 5-2 meshes with the transmission gear 22-2 to drive the gearbox 22 to move inwards accordingly, causing the gearbox 22 to move from the second position to the first position. At this time, the rebound tension spring 26 is pulled out for energy storage, and at the same time, the self-closing tension spring seat 32 moves inwards with the gearbox 22, stretching the self-closing tension spring 33 for energy storage. 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, and 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 5-2 continues to move inwards. When the self-closing dial pin 5-5 touches the self-closing chuck 36, the self-closing chuck 36 is triggered to rotate, and the self-closing chuck 36 is combined with the self-closing dial pin 5-5. Under the action of the self-closing tension spring 33, the self-closing dial pin 5-5 is pulled to move inwards, driving the movable rail 5-2 and the drawer to also move inwards. At the same time, the damper 34 starts to work, generating a force opposite to that of the self-closing tension spring 33 to achieve a buffering effect. Under the action of the self-closing tension spring 33, the movable rail 5-2 continues to move inwards, and the drawer moves inwards accordingly until the movable rail 5-2 or the drawer is completely closed.

[0068] A rebound damping device for a slide rail of the present utility model and a slide rail with the rebound damping device organically combine a rebound component and a damping self-closing component, and utilize the pressing and unlocking rebound of the gearbox. With the design of switching between bidirectional rotation and unidirectional rotation of the transmission gear in the gearbox, the cooperation stability of the pressing rebound and damping closing functions is better, and the reliability will not be reduced due to factors such as installation errors, and the product consistency is good. Moreover, when the gearbox rebounds, the self-closing tension spring can move along, which will not hinder the pressing rebound function. When the gearbox is reset for energy storage, the self-closing tension spring can also be stretched for energy storage together, ensuring the working stability of the rebound damping device. At the same time, with the above-mentioned gearbox design, the slide rail can be pulled open and can also be normally closed, and can be used as a normal damping slide rail, which can meet different usage scenarios.

[0069] The above schematically describes the present utility model and its embodiments. This description is not restrictive, and what is shown in the drawings is only one of the embodiments 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 similar structural forms and embodiments without creative work 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 rebound damping device for a slide rail, comprising a base (1), a rebound component (2) and a damping self-closing component (3), wherein the rebound component (2) and the damping self-closing component (3) are arranged on the base (1), and the damping self-closing component (3) is located on one side of the rebound component (2), characterized in that: The rebound assembly (2) comprises a housing (21), a gear box (22), a trigger transmission block (23) and a rebound tension 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 arranged in the gear box (22); at least part of the teeth of the transmission gear (22-2) are exposed outside the gear box (22) and are used to mesh with the corresponding rack on the slide rail; 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) is in the first position, the clutch mechanism releases the transmission gear (22-2) so that it can rotate bidirectionally; When disengaged from the first position, the clutch mechanism locks the rotational freedom of the transmission gear (22-2) in one direction so that it can only rotate in one direction; the gear box (22) and the housing (21) have a locking structure at the first position; the rebound tension spring (26) is arranged between the gear box (22) and the housing (21) and is used to make the gear box (22) maintain an elastic tendency to move from the first position to the second position; the trigger transmission block (23) is movably arranged in the housing (21), and there is a matching relationship between the trigger transmission block (23) and the locking structure so that after pressing the trigger transmission block (23), the gear box (22) at the first position is unlocked and rebounds to the second position under the action of the rebound tension spring (26); The damping self-closing component (3) comprises a self-closing damping frame (31), a self-closing tension spring seat (32), a self-closing tension spring (33), a damper (34) and a self-closing clamp (36); the self-closing tension spring seat (32) is slidably arranged in the self-closing damping frame (31) along the moving direction of the gear box (22); one end of the self-closing tension spring (33) is connected to the self-closing tension spring seat (32); the other end of the self-closing tension spring (33) is connected to the self-closing clamp (36); the damper (34) is arranged on the self-closing damping frame (31); 1), and the damper (34) is connected to the self-closing clamp (36); one end of the self-closing tension spring seat (32) is in contact with the gear box (22); when the gear box (22) rebounds from the first position to the second position, the self-closing tension spring seat (32) can move toward the gear box (22) under the pull of the self-closing tension spring (33); when the gear box (22) moves from the second position to the first position, the self-closing tension spring seat (32) moves with the gear box (22) to stretch the self-closing tension spring (33) to store energy.

2. The rebound damping device for a slide rail according to claim 1, characterized in that: The transmission gear (22-2) is installed in the gear box (22) via a one-way mechanism, so that the transmission gear (22-2) can only rotate in the positive direction relative to the one-way mechanism. The clutch mechanism cooperates with the one-way mechanism. At the first position, the clutch mechanism is disengaged from the one-way mechanism so that the transmission gear (22-2) can rotate in the positive and negative directions. When the gear box (22) is disengaged from the first position and moves to the second position, the clutch mechanism is combined with the one-way mechanism so that the transmission gear (22-2) can only rotate in the positive direction.

3. The rebound damping device for a slide rail according to claim 2, characterized in that: The one-way mechanism is a one-way bearing (22-4), and the transmission gear (22-2) is installed on the rotating shaft (22-3) through the one-way bearing (22-4); the clutch mechanism comprises a stop gear (22-5) fixed on the rotating shaft (22-3) and a clutch arm (22-6) installed in the gear box (22); the clutch arm (22-6) is provided with saw teeth (22-6-4) capable of engaging with or disengaging from the stop gear (22-5); at the first position, the clutch arm (22-6) is disengaged from the stop gear (22-5); when the gear box (22) is disengaged from the first position and moves to the second position, the clutch arm (22-6) is engaged with the stop gear (22-5).

4. The rebound damping device for a slide rail according to claim 3, characterized in that: The locking structure between the gear box (22) and the housing (21) comprises a sliding pin (22-6-2) provided at one end of a 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 gear box (22) via a swing shaft (22-6-1); the sliding pin (22-6-2) is slidably fitted in the track groove (21-1-1); and the track groove (21-1 -1) having 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), wherein the sliding pin (22-6-2) can be guided by the straight groove section (21-1-1a) through the arc-shaped guide groove (21-1-1b) into the clamping groove (21-1-1c), thereby locking the gear box (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); the rebound unlocking portion (24-2) has a pushing inclined surface (24-3) that can cooperate with the trigger pin (22-6-3); at the first position, the trigger transmission block (23) The rebound unlocking portion (24-2) is moved to the far end by the pressing action of the slide rail, and the pushing inclined surface (24-3) pushes the trigger pin (22-6-3) to cause the clutch arm (22-6) to swing in the direction of the stop gear (22-5), so that the sliding pin (22-6-2) is disengaged from the clamping groove (21-1-1c) and enters the straight groove section (21-1-1a) to unlock, and at the same time the clutch arm (22-6) is meshed with the stop gear (22-5).

5. The rebound damping device for a slide rail according to claim 4, characterized in that: The synchronous trigger block (24) and the trigger transmission block (23) are arranged separately, and a trigger extension arm (24-1) abutting against the trigger transmission block (23) is arranged on the synchronous trigger block (24), a first reset spring (23a) is arranged between the trigger transmission block (23) and the housing (21), and a second reset spring (24a) is arranged between the synchronous trigger block (24) and the housing (21), and a toggle groove is also arranged at one end of the synchronous trigger block (24), and a synchronous rotating shaft (25) is arranged in the housing (21), and a protruding tongue (25-1) capable of being inserted into the toggle groove is arranged on the synchronous rotating shaft (25).

6. The rebound damping device for a slide rail according to claim 4, characterized in that: The gear box (22) has a box body (22-1) that can slide in the shell (21), and 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), wherein 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), and 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); the self-closing tension spring seat (32) is provided with an abutting portion (32-1) that abuts against the intermediate box body (22-1-1), and a buffer spring sheet that matches at the second position is provided between the intermediate box body (22-1-1) and the shell (21).

7. The rebound damping device for a slide rail according to any one of claims 1 to 6, characterized in that: One end of the self-closing damping frame (31) has a guide portion (31-1), the guide portion (31-1) is provided with a guide rib (31-2), the end of the guide rib (31-2) is provided with a corner (31-3), the self-closing clamp (36) is connected to the self-closing tension spring (33) and the damper (34) through a self-closing slider (35), the self-closing clamp (36) is rotatably mounted on the self-closing slider (35), and the self-closing clamp (36) has a clamp slot (36-1) for matching with a self-closing dial pin (5-5) on a slide rail, a guide slot (36-2) slidably matched with the guide rib (31-2), and a corner slot (36-3) matching with the corner (31-3).

8. The rebound damping device for a slide rail according to claim 1, characterized in that: A rotating wheel (27) is provided in the housing (21); one end of the rebound tension spring (26) is connected to the gear box (22), and the other end bypasses the rotating wheel (27) and is connected to the rebound tension spring seat (28); one side of the housing (21) is provided with at least two levels of slots (21-1-2) for engaging with the rebound tension spring seat (28); and the rebound tension force is adjusted by changing the position of the rebound tension spring seat (28) on the housing (21).

9. The rebound damping device for a slide rail according to claim 1, characterized in that: The base (1) is provided with a plurality of adjustment holes (1-1); the shell (21) comprises a base (21-1) and an upper cover (21-2); the base (21-1) is provided with a plurality of buckles (21-1-5) capable of sliding in corresponding adjustment holes (1-1); an adjuster (29) is rotatably provided on the base (1); a spiral groove is provided on one side of the adjuster (29); a boss (21-1-6) matched with the spiral groove is provided on the base (21-1); and the front and rear position of the base (21-1) on the base (1) is changed by rotating the adjuster (29).

10. A slide rail with the rebound damping device for the slide rail according to any one of claims 1 to 9.

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