Bounce and cushioning device for a slide rail drawer

Abstract

The application discloses a rebound and buffer device of a slide rail drawer. The device is fixed with the drawer and a plug-in block of a poking end of a poking arm is fixed in one side slide rail fixing frame. A shell is hinged with a poking hook for poking a slide base locked in a potential position to move in a potential direction. A linkage device is arranged between the poking hook and the other side slide rail fixing frame for driving the poking hook to poke the slide base in response to a pressing action of the drawer. Regardless of any position of the pressing drawer, displacement of at least one side of the drawer is ensured, so that the rebound and buffer device is triggered to act and open the drawer in time, and sensitivity, responsiveness and reliability of the rebound and buffer device in response to the pressing action are greatly improved.

Description

Technical Field

[0001] This invention relates to the technical field of press-to-rebound and buffer-closing opening and closing devices, specifically to a press-to-rebound and buffer-closing device for opening and closing slide drawers. Background Technology

[0002] Authorization notice number CN 215837930 U discloses a drawer slide closing and rebound device, which can realize the press-rebound and buffered closing of slide drawers. In actual use, this closing and rebound device (equivalent to a rebound and buffer device) needs to be used in conjunction with a plug block (equivalent to a locking and releasing mechanism). The opening and closing of the drawer is achieved by the engagement and disengagement of the plug block and the device's lever arm. The lever arm can be triggered to perform buffered swinging and rebounding swinging in response to the displacement generated by the pressing action when opening and closing the drawer, thereby realizing the buffered closing and rebound opening of the drawer. Since this slide drawer rebound and buffer device is a single-point trigger, the plug block is usually installed in the middle position of the drawer. In actual use, when pressing the drawer to rebound, only pressing the middle position of the drawer can ensure that the trigger device rebounds and opens. When pressing the sides of the drawer, the middle of the drawer may not necessarily move, especially for wider drawers, causing the device to not be triggered and the drawer not to open in time. The drawer must be pressed again to ensure that the middle of the drawer moves in time to open the drawer in time. Therefore, the current rebound and buffering devices of this type of drawer slide have deficiencies in terms of sensitivity, responsiveness, and reliability in response to pressing actions. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a rebound and buffer device for slide drawers that can improve the sensitivity, responsiveness and reliability of responding to pressing actions.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows: A rebound and buffering device for a slide drawer, comprising a housing, a lever hinged to the housing, a damper for buffering the lever to swing when closed, a top arm hinged to the hinge end of the lever to drive the lever to rebound and swing, a slide block slidably mounted on the housing for pushing the top arm, a first spring for driving the slide block to push the top arm, a swing block hinged to the slide block, a top platform inside the housing that abuts against the swing block and locks the slide block to the deformation and storage position of the first spring, a second spring for driving the swing block to swing away from the top platform, and a first cam portion formed at the hinge end of the lever to push the swing block into the top platform when the lever swings when closed. The device comprises: a lever hinged to the housing for closing swing; a third spring for driving the lever to move the lever arm for closing swing; and a second cam portion formed at the hinge end of the lever arm, which swings past the lever when the lever arm completes the closing swing under external force, so that the lever arm can move the lever arm for closing swing. The device is characterized in that: the rebound and buffer device is fixed to the drawer, and a plug block that can be inserted into the lever arm's actuating end is fixed to one side of the slide rail fixing frame; the housing is hinged to a hook for moving a slide locked in the storage position in the storage direction; and a linkage device is provided between the hook and the other side of the slide rail fixing frame to drive the hook to move the slide in response to the action of pressing the drawer.

[0005] Based on the above, the linkage device includes a rocker arm hinged to the drawer, one end of which is hinged to a hook, and the other end abutting against a stop fixed to the slide rail bracket. Alternatively, the linkage device includes a pull cord and a linkage mechanism that pulls the pull cord in response to pressing the drawer.

[0006] The linkage mechanism includes a mounting base fixed to the drawer, a cord receiving seat slidably mounted on the mounting base for connecting the pull cord, and an insert block fixed to the slide rail bracket that drives the cord receiving seat to slide in response to pressing the drawer. An adjustable cord locking device is connected to the pull cord.

[0007] The beneficial effects of this invention are as follows: The rebound and buffering device of the drawer slide of this invention is equipped with a hook that can move the slide block locked in the accumulating position in the accumulating direction. The rebound and buffering device is then fixed to the drawer. Simultaneously, a connecting block is fixed to one side of the drawer slide bracket, and a linkage device is set between the other side drawer slide bracket and the hook to drive the hook to move the slide block in response to the drawer pressing action. This ensures that no matter where the drawer is pressed, at least one side of the drawer will be displaced, thereby triggering the rebound and buffering device to open the drawer promptly. This greatly improves the sensitivity, responsiveness, and reliability of the rebound and buffering device in response to pressing actions. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the installation structure of Embodiment 1 of the rebound and buffer device of the present invention; Figure 2 This is a schematic diagram of the installation structure of Embodiment 2 of the rebound and buffer device of the present invention; Figure 3 This is a schematic diagram of the structure of Embodiment 1 of the rebound and buffer device of the present invention; Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the rebound and buffer device of the present invention; Figure 5 This is an exploded view of the housing and the pendulum block in the rebound and buffer device of the present invention; Figure 6 This is an exploded view of the linkage mechanism in Embodiment 2 of the rebound and buffer device of the present invention. Implementation

[0009] like Figure 1-5 As shown, a rebound and buffer device for a slide drawer has a main structural principle that is largely the same as existing ones. It includes a housing 1, a lever 2 hinged to the housing 1, a damper 3 for the buffer lever 2 to swing closed, a top arm 4 hinged to the hinged end of the lever 2 to drive the lever 2 to rebound, a slide block 5 slidably mounted on the housing 1 to push the top arm 4, a first spring 6 driving the slide block 5 to push the top arm 4, a swing block 7 hinged to the slide block 5, and a mechanism within the housing 1 that abuts against the swing block 7 to lock the slide block 5 to the deformation and storage position of the first spring 6. The invention comprises a top platform 1.1, a second spring 8 that drives the swing block 7 away from the top platform 1.1, a first cam portion 2.1 formed at the hinge end of the lever arm 2 that pushes the swing block 7 into the top platform 1.1 when the external force drives the lever arm 2 to swing closed, a lever block 9 hinged to the housing 1 to swing the lever arm 2 closed, a third spring 10 that drives the lever block 9 to swing the lever arm 2 closed, and a second cam portion 2.2 formed at the hinge end of the lever arm 2 that swings past the lever block 7 when the external force completes the closed swing, allowing the lever block 9 to swing the lever arm 2 closed. In this invention, the rebound and buffer device is fixed to the drawer and can be fixed to one side of the slide rail fixing bracket 12 by a plug-in block 11 that can be inserted into the actuating end of the lever arm 2. The housing 1 is hinged to a hook 13 for moving the slide seat 5 locked in the storage position in the storage direction. A linkage device is provided between the hook 13 and the slide rail fixing bracket 14 on the other side to drive the hook 13 to move the slide seat 5 in response to the action of pressing the drawer.

[0010] It is known that the hinge between the top arm 4 and the lever arm 2 is a knee-like hinge that maintains a certain angle. When the lever arm 2 swings to the fully closed state of the drawer, the lever arm 2 and the top arm 4 are in contact. The lever arm 2 pushes against the top arm 4 and abuts against the slide 5 in the charging state. At this time, the included angle between the lever arm 2 and the top arm 4 is the minimum angle at which the two can be folded. In this way, when the slide in the charging state is unlocked, it will push against the top arm 4, and the top arm 4 will push against the lever arm 2 to make a rebound swing.

[0011] When closing the drawer, an external force is required to push the drawer inward. When the actuating end of the lever 2 moves to the insertion block 11, the lever 2 engages with the insertion block 11. As the drawer continues to be pushed inward, the fixed insertion block 11 forces the lever 2 to swing inward. At this time, the first cam 2.1 pushes the swing block 7, connected to the slide 5, in the storage direction, causing the first spring 6 to deform and store power. When the part 7.1 of the swing block 7 that abuts against the top platform 1.1 moves to the top platform 1.1, the part 7.1 is pushed by the first cam 2.1 to swing into position against the top platform 1.1, locking the storage state of the slide 5. The swing block 7 then avoids the swing of the first cam 2.1. Simultaneously, the second cam 2.2 swings past the lever 9, and the actuating end of the lever 9 swings into the recessed side of the second cam 2.2. At this point, the external force can be removed. Under the action of the third spring 10, the lever 9 pushes the second cam 2.2 to move the lever arm 2 to continue its closing swing, driving the drawer to continue closing and moving. When the drawer is fully closed, the lever arm 2 will push against the top arm 4 and just touch the end of the slide block 5. At the same time, the hook of the hook 13 will hook onto the boss 5.1 on the slide block 5. Of course, the hook of the hook 13 is only a loose hook here, and the force of the hook 13 is much less than the elastic force of the first spring 6. Therefore, a torsion spring 17 can be added to the hook 13 to maintain the loose hook. In addition, the hook 13 should be designed as a barb, allowing the boss 5.1 to be lifted and slide past the hook 13 when the slide block 5 is ready to move.

[0012] When the drawer needs to be opened, pressing the left side of the drawer will cause the displacement on the left side to cause the lever 2 to swing in a closing motion. This pushes the top arm 4 to move the slide 5 and the swing block 7 in the charging direction, releasing the top lock of the top platform 1.1 on the swing block 7. The second spring 8 then drives the swing block 7 away from the top platform, thus releasing the lock on the slide 5. After the external force is removed, the charged first spring 6 drives the slide 5 to push the top arm 4. The top arm 4 pushes the lever 2 back to swing, which is the opening motion. This causes the drawer to move outward, i.e., to open by rebound. If the right side of the drawer is pressed, the displacement on the right side will trigger the linkage mechanism, driving the lever 13 to move the slide 5 to unlock. If other positions of the drawer are pressed, the left and / or right sides will always be displaced, unlocking the slide 5. In other words, no matter where the drawer is pressed, at least one side of the drawer will be displaced, thus triggering the rebound and buffering mechanism to open the drawer in time. This greatly improves the sensitivity, responsiveness, and reliability of the rebound and buffering mechanism in response to pressing actions.

[0013] In practical implementation, the linkage device can adopt different structural forms. For example... Figure 1 , 3 In the illustrated embodiment, the linkage device includes a rocker arm 15 hinged to the drawer. One end of the rocker arm 15 is hinged to a hook 13, and the other end abuts against a stop 16 fixed to the slide rail bracket 14. Figure 2 , 4In the illustrated embodiment two, the linkage device includes a pull cord 18 and a linkage mechanism that pulls the pull cord 18 in response to pressing the drawer. Specifically, as shown... Figure 6 As shown, the linkage mechanism includes a mounting base 19 fixed to the drawer, a rope receiving seat 20 slidably mounted on the mounting base 19 for connecting the pull rope 18, and an insert block 21 fixed to the slide rail bracket 14 that drives the rope receiving seat 20 to slide in response to the action of pressing the drawer. The insertion surface between the insert block 21 and the rope receiving seat 20 should be designed as a wedge-shaped fit, using the wedge-shaped surface to convert the longitudinal displacement of pressing the drawer into the lateral displacement of pushing the rope receiving seat 20 to pull the rope, thereby pulling the hook 13 to swing. Of course, the linkage device can also adopt other conventional designs that use the displacement generated by contact to drive the hook 13 to swing. To facilitate the adjustment of the pull rope length, a rope locking device 22 for adjusting the length is connected to the pull rope 18.

Claims

1. A rebound and buffering device for a slide drawer, comprising a housing, a lever hinged to the housing, a damper for buffering the lever's closing swing, a top arm hinged to the hinged end of the lever to drive the lever's rebound swing, a slide block slidably mounted on the housing for pushing the top arm, a first spring for driving the slide block to push the top arm, a swing block hinged to the slide block, a top platform inside the housing that abuts against the swing block and locks the slide block to the deformation and storage position of the first spring, a second spring for driving the swing block to swing away from the top platform, a first cam portion formed at the hinged end of the lever to push the swing block into the top platform when an external force drives the lever to swing closed, a lever block hinged to the housing to actuate the lever's closing swing, a third spring for driving the lever block to actuate the lever's closing swing, and a second cam portion formed at the hinged end of the lever to swing past the lever block when the lever completes the external force closing swing so that the lever block can actuate the lever's closing swing, characterized in that: The rebound and buffer device is fixed to the drawer and can be fixed to one side of the slide rail fixing bracket by a plug block that can be inserted into the actuating end of the lever. The housing is hinged to a hook for moving the slide block locked in the storage position in the storage direction. A linkage device is provided between the hook and the other side slide rail fixing bracket to drive the hook to move the slide block in response to the action of pressing the drawer.

2. The rebound and buffer device for the slide rail drawer according to claim 1, characterized in that: The linkage device includes a rocker arm hinged to the drawer, one end of which is hinged to a hook, and the other end abutting against a stop fixed to the slide rail bracket.

3. The rebound and buffer device for the slide drawer according to claim 1, characterized in that: The linkage device includes a pull cord and a linkage mechanism that pulls the pull cord in response to pressing the drawer.

4. The rebound and buffer device for the slide drawer according to claim 3, characterized in that: The linkage mechanism includes a mounting base fixed to the drawer, a cord receiving seat slidably mounted on the mounting base for connecting the pull cord, and an insert block fixed to the slide rail bracket that drives the cord receiving seat to slide in response to the action of pressing the drawer.

5. The rebound and buffer device for the slide rail drawer according to claim 3 or 4, characterized in that: The pull rope is equipped with an adjustable rope lock.

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