External flexible closing buffer mechanism

Abstract

The present invention relates to an external flexible closing buffer mechanism, which includes a bracket. A support frame is slidably installed on the inner side surface of the bracket through a slide rail. A flexible buffer mechanism is installed on the outer side surface of the bracket below the slide rail. A lever cooperating with the flexible buffer mechanism is also installed on the support frame. When a force is applied to the support frame to make it slide out of the bracket along the slide rail, the lever disengages from the flexible buffer mechanism. When a reverse force is applied to the support frame to make it slide into the bracket, the lever approaches and is clamped to the flexible buffer mechanism. The flexible buffer mechanism acts on the sliding support frame through the lever, so that the support frame is flexibly closed. The structure of the present invention is simple, compact and novel, and the concept is reasonable and ingenious. It realizes effective flexible buffering when sliding into the slide rail, has good stability, and greatly improves the reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of buffer mechanisms, and in particular to an external flexible closing buffer mechanism. Background Art

[0002] During the pulling and using process of drawer-like articles, in order to improve the use experience and play a protective role, a buffer mechanism is generally added during opening or closing to achieve relatively flexible opening and closing.

[0003] In the prior art, the buffer mechanism generally obtains flexible buffering through the elastic force of a spring. However, in the existing mechanism, the stretching length of the spring is consistent with the sliding distance. In order to match the sliding distance, a spring with a large stretching length has to be selected, and the frequent stretching of the spring length is extremely likely to cause the failure of its elasticity, with low use reliability and a hidden danger of buffer failure. Summary of the Invention

[0004] The applicant of the present invention aims at the above-mentioned disadvantages in the existing production technology and provides a reasonable-structured external flexible closing buffer mechanism, thereby realizing effective flexible buffering when the slide rail slides into the bracket, with good stability and greatly improving the reliability.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An external flexible closing buffer mechanism includes a bracket. A support frame is slidably installed on the inner side surface of the bracket through a slide rail. A flexible buffer mechanism is installed on the outer side surface of the bracket below the slide rail. A lever cooperating with the flexible buffer mechanism is also installed on the support frame. When a force is applied to the support frame to make it slide out of the bracket along the slide rail, the lever disengages from the flexible buffer mechanism. When a reverse force is applied to the support frame to make it slide into the bracket, the lever approaches and is clamped to the flexible buffer mechanism, and the flexible buffer mechanism acts on the sliding support frame through the lever, so that the support frame is flexibly closed.

[0007] As a further improvement of the above technical solution:

[0008] The structure of the flexible buffer mechanism is as follows: It includes a support plate fixedly installed on the outer side surface of the bracket. A chute is opened on the support plate along the sliding direction of the slide rail. A sliding component is slidably installed in the chute, and the sliding component is fitted with the lever. A cam is rotatably installed on the outer side surface of the bracket at the end of the support plate. A first spring is installed at the lower part of the support plate. It further includes a stranded wire. One end of the stranded wire is fixedly installed with the first spring, and the other end of the stranded wire is wound around the cam and then fixedly installed on the sliding component.

[0009] The end of the chute in the sliding direction of the slide rail extends downward and bends to form a downward turning part. When the sliding component slides into the turning part along the chute, the lever disengages from the sliding component.

[0010] The structure of the sliding component is as follows: it includes a slider body with an inverted L-shaped structure. The horizontal arm of the slider body faces the sliding-out direction of the slide rail. A floating pin is inserted vertically at the end of the horizontal arm of the slider body. A clamping groove for the clamping lever is formed between the floating pin and the vertical arm of the slider body. A second spring is also installed between the bottom end of the floating pin and the slider body.

[0011] A damper is installed on the outer side of the bracket, and the telescopic direction of the damper is consistent with the sliding direction of the slide rail; a tapered hole structure is further provided on the outer side of the vertical arm of the slider body. The telescopic end of the damper extends into the tapered hole structure. During the reset process of the sliding component under the tension of the first spring, the slider body applies force to the damper to make it contract.

[0012] An outward inclined surface structure is provided on the upper part of the floating pin; an ear is bent and extended outward at the bottom end of the lever, and the ear is clamped in the clamping groove.

[0013] A sliding pin extends forward from the front side of the slider body, and the sliding pin is clamped in the sliding groove of the support plate.

[0014] The bottom of the slider body below the sliding pin is slidably fitted with the support plate.

[0015] The structure of the cam is as follows: it includes a wheel body. A connecting hole for rotatably installing with the bracket is opened on the wheel body. A wire threading hole for the stranded wire to pass through is opened on the wheel body. A wire groove for winding the stranded wire is opened along the circumferential direction on the circumferential surface of the wheel body, and the wire threading hole is communicated with the wire groove.

[0016] The bracket includes an upper bracket and a lower bracket which are arranged up and down and fixedly installed with each other. The slide rail is installed on the inner side of the upper bracket, and the flexible buffer mechanism is installed on the outer side of the lower bracket. A damping seat is further extended and provided on the outer side of the lower bracket.

[0017] The beneficial effects of the present invention are as follows:

[0018] The present invention has a compact and reasonable structure and is convenient to operate. By providing a mutually cooperating lever and a flexible buffer mechanism between the support frame and the bracket, when a force is applied to the support frame to slide it out of the bracket along the slide rail, the lever will disengage from the flexible buffer mechanism and continue to slide out with the support frame; then when a reverse force is applied to the support frame to slide it into the bracket, the lever will approach and be clamped into the flexible buffer mechanism. The flexible buffer mechanism acts on the sliding-in support frame through the lever, so that the support frame is flexibly closed relative to the bracket, thereby realizing flexible buffering during closing. The concept is novel and ingenious, greatly improving the use reliability and having good stability;

[0019] The present invention also has the following advantages:

[0020] The stranded wire fixedly installed at one end on the first spring winds around the cam and is fixedly installed with the sliding assembly. The setting of the cam makes the stretching length of the first spring much smaller than the sliding distance of the sliding assembly, thereby effectively improving the service life of the first spring, ensuring its elastic force during use, and guaranteeing the buffering performance of the mechanism;

[0021] The setting of the turning part at the end of the chute enables the lever to smoothly disengage when the sliding assembly slides into the turning part. Thus, the lever continues to slide out along with the support frame. And after the lever smoothly disengages, the existence of the turning part also prevents the sliding assembly from moving back due to the elastic force of the first spring and the pulling of the stranded wire, making the sliding assembly stationary relative to the support plate at the turning part until it is pushed by the returned lever;

[0022] The setting of the floating pin that floats up and down on the sliding assembly enables the lever to still act on the floating pin to make it descend and then be reinstalled into the sliding assembly after abnormally disengaging from the sliding assembly, effectively guaranteeing the stability and reliability of the mechanism during use; and the setting of the inclined plane structure on the floating pin makes the reinstallation of the lever smoother;

[0023] The existence of the damper further improves the buffering flexibility of the buffer mechanism. Brief Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the present invention (in the state of sliding out and opening).

[0025] Figure 2 It is a schematic structural diagram of the present invention (in the state of sliding in and closing, the upper support is omitted).

[0026] Figure 3 It is a schematic installation diagram of the flexible buffer mechanism of the present invention and the lower support.

[0027] Figure 4 It is a schematic structural diagram of the sliding assembly of the present invention.

[0028] Figure 5 It is a schematic structural diagram of the cam of the present invention.

[0029] Figure 6 It is a schematic diagram of the present invention in the use state.

[0030] Wherein: 1. Upper support; 2. Damper; 3. Lower support; 4. Flexible buffer mechanism; 5. Lever; 6. Slide rail; 7. Support frame; 31. Damper seat; 41. Support plate; 42. Sliding assembly; 43. First spring; 44. Stranded wire; 45. Cam; 411. Chute; 421. Slide block body; 422. Slide pin; 423. Second spring; 424. Floating pin; 425. Card slot; 426. Taper hole structure; 451. Wheel body; 452. Connecting hole; 453. Threading hole; 454. Wire groove; 51. Folded ear; 8. Drawer. Detailed implementation manners

[0031] The following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings.

[0032] As Figure 1 and Figure 2 shown, the external flexible closing buffer mechanism of this embodiment includes a bracket. A support frame 7 is slidably installed on the inner side surface of the bracket through a slide rail 6. A flexible buffer mechanism 4 is installed on the outer side surface of the bracket below the slide rail 6. A lever 5 that cooperates with the flexible buffer mechanism 4 is also installed on the support frame 7. When a force is applied to the support frame 7 to slide it out of the bracket along the slide rail 6, the lever 5 disengages from the flexible buffer mechanism 4. When a reverse force is applied to the support frame 7 to slide it into the bracket, the lever 5 approaches and is clamped to the flexible buffer mechanism 4. The flexible buffer mechanism 4 acts on the sliding support frame 7 through the lever 5, enabling the support frame 7 to be flexibly closed. Thus, through the settings of the flexible buffer mechanism 4 and the lever 5, flexible buffering is achieved when the support frame 7 closes relative to the bracket.

[0033] As Figure 3 shown, the structure of the flexible buffer mechanism 4 is as follows: It includes a support plate 41 fixedly installed on the outer side surface of the bracket. A chute 411 is opened on the support plate 41 along the sliding direction of the slide rail 6. A sliding component 42 is slidably installed in the chute 411, and the sliding component 42 is fitted with the lever 5. A cam 45 is rotatably installed on the outer side surface of the bracket at the end of the support plate 41. A first spring 43 is installed at the lower part of the support plate 41. It also includes a stranded wire 44. One end of the stranded wire 44 is fixedly installed with the first spring 43, and the other end of the stranded wire 44 is wound around the cam 45 and then fixedly installed on the sliding component 42. The stranded wire 44 with one end fixedly installed with the first spring 43 is wound around the cam 45 and then fixedly installed with the sliding component 42. The setting of the cam 45 makes the stretching length of the first spring 43 much smaller than the sliding distance of the sliding component 42, thereby effectively improving the service life of the first spring 43, ensuring its elastic force during use, and guaranteeing the buffering performance of the mechanism.

[0034] The end of the chute 411 in the sliding direction of the slide rail 6 bends downward to form a downward turning portion. When the sliding component 42 slides into the turning portion along the chute 411, the lever 5 disengages from the sliding component 42. The setting of the turning portion at the end of the chute 411 enables the lever 5 to smoothly disengage when the sliding component 42 slides into the turning portion. Thus, the lever 5 continues to slide out with the support frame 7. And after the lever 5 smoothly disengages, the existence of the turning portion also makes the sliding component 42 not move back to its original position due to the elastic force of the first spring 43 and the pulling of the stranded wire 44, making the sliding component 42 stationary relative to the support plate 41 at the turning portion until it is pushed by the returning lever 5.

[0035] As Figure 4As shown in the figure, the structure of the sliding component 42 is as follows: it includes a slider body 421 with an inverted L-shaped structure. The horizontal arm of the slider body 421 faces the sliding-out direction of the slide rail 6. A floating pin 424 is inserted vertically at the end of the horizontal arm of the slider body 421. A clamping groove 425 for the clamping lever 5 is formed between the floating pin 424 and the vertical arm of the slider body 421. A second spring 423 is also installed between the bottom end of the floating pin 424 and the slider body 421. The setting of the floating pin 424 that floats up and down on the sliding component 42 enables the lever 5 to still be able to make it descend by acting on the floating pin 424 and then be reinstalled into the sliding component 42 after abnormally detaching from the sliding component 42, effectively ensuring the stability and reliability of the mechanism during use.

[0036] A damper 2 is installed on the outer side of the bracket. The telescopic direction of the damper 2 is the same as the sliding direction of the slide rail 6. A tapered hole structure 426 is also provided on the outer side of the vertical arm of the slider body 421. The telescopic end of the damper 2 extends into the tapered hole structure 426. During the reset process of the sliding component 42 under the tension of the first spring 43, the slider body 421 exerts a force on the damper 2 to make it contract. The presence of the damper 2 further improves the buffering flexibility of the buffer mechanism. The presence of the tapered hole structure 426 limits the force application point of the damper 2 on the slider body 421, effectively improving the stability and reliability.

[0037] An outward inclined surface structure is provided on the upper part of the floating pin 424. The setting of the inclined surface structure on the floating pin 424 makes it smoother for the lever 5 to be reinstalled. The bottom end of the lever 5 extends outward and is bent to form a folding ear 51, and the folding ear 51 is clamped in the clamping groove 425.

[0038] A sliding pin 422 extends forward from the front side of the slider body 421, and the sliding pin 422 is clamped in the sliding groove 411 of the support plate 41.

[0039] The bottom of the slider body 421 below the sliding pin 422 is slidably fitted with the support plate 41. Through the synchronous sliding installation of the sliding pin 422 and the bottom of the slider body 421 with the support plate 41, the reliable sliding and stability between the sliding component 42 and the support plate 41 are effectively guaranteed.

[0040] As Figure 5 shown, the structure of the cam 45 is as follows: it includes a wheel body 451. A connection hole 452 for rotatably installing with the bracket is opened on the wheel body 451. A threading hole 453 for the stranded wire 44 to pass through is opened on the wheel body 451. A wire groove 454 for the stranded wire 44 to be wound around is opened along the circumferential direction on the circumferential surface of the wheel body 451, and the threading hole 453 is communicated with the wire groove 454. The settings of the threading hole 453 and the wire groove 454 are used for the routing and winding of the stranded wire 44 on the cam 45, and it is also convenient to drive the cam 45 to swing relative to the bracket through the stranded wire 44.

[0041] The bracket includes an upper bracket 1 and a lower bracket 3 which are arranged up and down and fixedly installed with each other. The slide rail 6 is installed on the inner side of the upper bracket 1, and the flexible buffer mechanism 4 is installed on the outer side of the lower bracket 3. A damping seat 31 is also extended and provided on the outer side of the lower bracket 3. The lower bracket 3 is clamped with the damper 2 through the damping seat 31.

[0042] The buffer mechanism of this embodiment is applicable to the buffer when the drawer 8 in the refrigerator is closed after being pulled out. A set of buffer mechanisms are respectively installed on the two outer sides of the drawer 8, wherein the bracket is fixedly installed on the side of the refrigerator cabinet body, and the support frame 7 is fixedly installed with the drawer 8, as Figure 6 shown.

[0043] The working principle of the present invention is as follows:

[0044] Taking the pulling and using of the drawer 8 as an example for illustration.

[0045] Applying force to the drawer 8 causes the support frame 7 to slide outwards relative to the refrigerator cabinet body along the sliding direction of the slide rail 6 together with the drawer 8. The lever 5 moves outwards along with the support frame 7. The lever 5 drives the sliding component 42 clamped with it to move, so that the sliding component 42 moves along the chute 411 in the direction of sliding out of the slide rail 6. The movement of the sliding component 42 pulls the stranded wire 44, and the stranded wire 44 drives the cam 45 to swing in the direction of sliding out of the slide rail 6. At the same time, the stranded wire 44 pulls the first spring 43 to make it stretched;

[0046] Until the sliding component 42 moves to the turning part along the chute 411, since the sliding component 42 turns downwards along the turning part, the lever 5 clamped with it is disengaged from the card slot 425. The lever 5 continues to slide outwards along the slide rail 6 together with the support frame 7 and the drawer 8, while the sliding component 42 is temporarily stationary relative to the support plate 41 at the turning part of the chute 411; at this time, the first spring 43 is stretched to the longest working length under the pull of the stranded wire 44, the cam 45 swings to the maximum angle, and the telescopic rod of the damper 2 extends and resets and disengages from the slider body 421 of the sliding component 42;

[0047] Applying reverse force to the pulled-out drawer 8 causes the support frame 7 to slide inwards relative to the refrigerator cabinet body along the sliding direction of the slide rail 6 together with the drawer 8. The lever 5 moves inwards along with the support frame 7. The lever 5 approaches and is clamped into the card slot 425 of the sliding component 42. As the drawer 8 continues to slide inwards, the lever 5 applies force to the sliding component 42 to make it slide out of the turning part and continue to slide along the chute 411; the stretched first spring 43 applies a pulling force to the sliding component 42 through the stranded wire 44. The tapered hole structure 426 of the slider body 421 in the sliding component 42 is sleeved with the telescopic end of the damper 2. As the sliding continues, the sliding component 42 applies pressure to the damper 2 until the drawer 8 is completely closed.

[0048] When the lever 5 disengages due to abnormal reasons before pulling the sliding component 42 to the turning part of the chute 411, the sliding component 42 first returns under the elastic force of the first spring 43, and the flexible buffering function fails temporarily; when the drawer 8 is closed, the lever 5 moves backward and approaches and fits the floating pin 424 of the sliding component 42. The lever 5 applies a force to the floating pin 424 through the inclined surface structure on the upper part of the floating pin 424, causing it to be pressed down and move downward relative to the slider body 421, so that the lever 5 is reinstalled in the card slot 425 again. The pressed floating pin 424 pops up and resets under the action of the second spring 423; thus, the disengagement of the lever 5 in the abnormal state is solved, and when the drawer 8 is opened and closed again, the flexible buffering function is restored.

[0049] The operation of the present invention is simple, the structure is compact and novel, the flexible buffering is realized, the use reliability is greatly improved, and the stability is good.

[0050] The above description is an explanation of the present invention, not a limitation of the invention. The scope defined by the present invention can be seen in the claims. Any form of modification can be made within the protection scope of the present invention.

Claims

1. An external flexible closing buffer mechanism, characterized in that: it includes a bracket, a support frame (7) is slidably installed on the inner side surface of the bracket through a slide rail (6), a flexible buffer mechanism (4) is installed on the outer side surface of the bracket below the slide rail (6), and a lever (5) cooperating with the flexible buffer mechanism (4) is also installed on the support frame (7); when a force is applied to the support frame (7) to slide it out of the bracket along the slide rail (6), the lever (5) disengages from the flexible buffer mechanism (4), and when a reverse force is applied to the support frame (7) to slide it into the bracket, the lever (5) approaches and is clamped to the flexible buffer mechanism (4), and the flexible buffer mechanism (4) acts on the sliding support frame (7) through the lever (5), so that the support frame (7) closes flexibly; The structure of the flexible buffer mechanism (4) is: it includes a support plate (41) fixedly installed on the outer side surface of the bracket, a chute (411) is opened on the support plate (41) along the sliding direction of the slide rail (6), a sliding component (42) is slidably installed in the chute (411), and the sliding component (42) is fitted with the lever (5); a cam (45) is rotatably installed on the outer side surface of the bracket at the end of the support plate (41), and a first spring (43) is installed at the lower part of the support plate (41); it further includes a stranded wire (44), one end of the stranded wire (44) is fixedly installed with the first spring (43), and the other end of the stranded wire (44) is wound around the cam (45) and then fixedly installed on the sliding component (42).

2. The external flexible closing buffer mechanism according to claim 1, characterized in that: The end of the chute (411) in the sliding direction of the slide rail (6) bends downward to form a downward turning part. When the sliding component (42) slides into the turning part along the chute (411), the lever (5) disengages from the sliding component (42).

3. The external flexible closing buffer mechanism according to claim 1, characterized in that: The structure of the sliding component (42) is: it includes a slider body (421) with an inverted L-shaped structure, the horizontal arm of the slider body (421) faces the sliding direction of the slide rail (6), a floating pin (424) is inserted vertically at the end of the horizontal arm of the slider body (421), and a clamping groove (425) for clamping the lever (5) is formed between the floating pin (424) and the vertical arm of the slider body (421), and a second spring (423) is also installed between the bottom end of the floating pin (424) and the slider body (421).

4. The external flexible closing buffer mechanism according to claim 3, characterized in that: A damper (2) is installed on the outer side surface of the bracket, and the telescopic direction of the damper (2) is the same as the sliding direction of the slide rail (6); a tapered hole structure (426) is further provided on the outer side surface of the vertical arm of the slider body (421), and the telescopic end of the damper (2) extends into the tapered hole structure (426). During the reset process of the sliding component (42) under the tension of the first spring (43), the slider body (421) applies a force to the damper (2) to make it contract.

5. The external flexible closing buffer mechanism according to claim 3, characterized in that: The upper part of the floating pin (424) is provided with an outward inclined surface structure; the bottom end of the lever (5) bends outward and extends to form a lug (51), and the lug (51) is clamped in the clamping groove (425).

6. The external flexible closing buffer mechanism according to claim 3, characterized in that: A sliding pin (422) extends forward from the front side of the slider body (421), and the sliding pin (422) is clamped in the sliding groove (411) of the support plate (41).

7. The external flexible closing buffer mechanism according to claim 6, characterized in that: The bottom of the slider body (421) located below the sliding pin (422) is slidably fitted with the support plate (41).

8. The external flexible closing buffer mechanism according to claim 1, characterized in that: The structure of the cam (45) is: including a wheel body (451), a connection hole (452) for rotatably installing with the bracket is opened on the wheel body (451), a threading hole (453) for the stranded wire (44) to pass through is opened on the wheel body (451), a wire groove (454) for the stranded wire (44) to be wound around is opened along the circumferential direction on the circumferential surface of the wheel body (451), and the threading hole (453) is communicated with the wire groove (454).

9. The external flexible closing buffer mechanism according to claim 1, characterized in that: The bracket includes an upper bracket (1) and a lower bracket (3) which are arranged up and down and fixedly installed with each other. The slide rail (6) is installed on the inner side surface of the upper bracket (1), the flexible buffer mechanism (4) is installed on the outer side surface of the lower bracket (3), and a damping seat (31) is further extended and provided on the outer side surface of the lower bracket (3).

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