Damping sliding door buffer device and sliding door

Abstract

The present invention provides a damping sliding door buffer device and a sliding door, wherein the damping sliding door buffer device includes a housing, a first slider, and a damping oil cylinder, wherein the first slider is slidably installed in the housing, and one end of the damping oil cylinder is connected to the first slider. The damping sliding door buffer device also includes: a compression spring, one end of which is connected to the first slider, and the compression spring stores energy when the first slider is braked during the movement of the housing until the housing stops moving; and a tension spring, one end of which is connected to the first slider, and the tension spring pulls the housing to release elastic potential energy when the first slider is braked during the movement of the housing until the housing stops moving, and when the compression spring reaches the maximum energy storage state, the tension of the tension spring is greater than or equal to the rebound force of the compression spring. The present invention can reduce the impact force on the damping oil cylinder during the closing process of the door leaf, thereby extending the service life of the damping oil cylinder.

Description

Technical Field

[0001] The present invention relates to the field of household hardware, and more particularly to a damping sliding door buffer device and a sliding door. Background Art

[0002] In modern homes, in order to prevent sliding doors from hitting the frames strongly when sliding, causing noise and damaging the frames, it is usually necessary to install buffers on the sliding doors. The buffers can prevent the noise caused by the rapid closing of the sliding doors and prevent the sliding doors from pinching fingers.

[0003] Existing damping sliding door buffers mostly adopt the configuration of damping cylinder + tension spring. When the door leaf is closed, the tension of the tension spring and the inertia force of the door leaf when closing are completely balanced by the damping cylinder, which causes the damping cylinder to be subjected to a large impact force, seriously affecting the service life of the damping cylinder. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a new damping sliding door buffer device and a sliding door in view of the problem that the damping oil cylinder in the above-mentioned damping sliding door buffer is subjected to a large impact force during use.

[0005] The present invention solves the above-mentioned technical problem by providing a damping sliding door buffer device, comprising a housing, a first slider, and a damping oil cylinder, wherein the first slider is slidably mounted in the housing, one end of the damping oil cylinder is connected to the first slider, and the damping sliding door buffer device further comprises:

[0006] a compression spring, one end of which is connected to the first slider, and wherein the compression spring stores energy when the first slider is braked during the movement of the housing until the housing stops moving;

[0007] A tension spring, one end of which is connected to the first slider, wherein the tension spring pulls the shell to release elastic potential energy when the first slider is braked during the movement of the shell until the shell stops moving, and when the compression spring reaches a maximum energy storage state, the tension of the tension spring is greater than or equal to the rebound force of the compression spring.

[0008] As a further improvement of the present invention, the damping sliding door buffer device further includes a second slider slidably mounted in the housing;

[0009] The second slider is located at one end of the damping cylinder away from the first slider and is connected to the damping cylinder; the compression spring and the tension spring are respectively located between the first slider and the second slider, and the other end of the compression spring and the other end of the tension spring are respectively connected to the second slider;

[0010] The compression spring stores energy when the second slider is braked during the movement of the housing until the housing stops moving; the tension spring pulls the housing to release elastic potential energy when the second slider is braked during the movement of the housing until the housing stops moving.

[0011] As a further improvement of the present invention, the first slider has a first limiting column arranged horizontally and facing the second slider; the damping sliding door buffer device includes a compression spring support block, a compression spring adjustment block and a first adjustment screw, the compression spring support block has a second limiting column and a first wedge surface, and the compression spring adjustment block includes a second wedge surface;

[0012] The compression spring support block is slidably mounted on the second slider in a manner that the second limiting column faces the first slider and is coaxial with the first limiting column. Both ends of the compression spring are respectively sleeved on the first limiting column and the second limiting column, and the compression direction of the compression spring is parallel to the axial direction of the damping cylinder.

[0013] The compression spring adjustment block has a vertical screw hole, and the compression spring adjustment block is fixed to the second slider by the first adjusting screw in such a way that the second wedge surface abuts against the first wedge surface of the compression spring support block, and the distance between the first limit column and the second limit column changes with the change of the stroke of the first adjusting screw in the vertical screw hole.

[0014] As a further improvement of the present invention, a pulley is provided in the second slider; the tension spring is fixed between the first and second sliders in such a manner that its middle portion passes around the pulley and abuts against the surface of the pulley, and its two ends are respectively assembled to the first slider; the damping cylinder is located between the two straight portions of the tension spring, and the tensioning direction of the tension spring is parallel to the axial direction of the damping cylinder;

[0015] The damping sliding door buffer device includes a tension spring adjustment block and a second adjustment screw, the tension spring adjustment block has a horizontal screw hole and two tension spring fixing slots; the first slider is provided with a horizontal sliding slot adapted to the tension spring adjustment block;

[0016] The tension spring adjustment block is slidably installed in the horizontal sliding groove of the first slider, the two ends of the tension spring are respectively fixed in the two tension spring fixing grooves, and the relative position of the tension spring adjustment block and the first slider changes with the change of the stroke of the second adjusting screw in the horizontal screw hole.

[0017] As a further improvement of the present invention, the damping sliding door buffer device includes a first adjusting rod, and the first adjusting rod has a first gear portion; the screw head of the second adjusting screw has a second gear portion;

[0018] The first sliding block has a vertical groove, the first adjusting rod is assembled in the vertical groove, and the first gear portion of the first adjusting rod is meshed with the second gear portion of the second adjusting screw.

[0019] As a further improvement of the present invention, the first slider is provided with a first hook groove embedded in the top surface and a first boss protruding from the two side surfaces, and the second slider is provided with a second hook groove embedded in the top surface and a second boss protruding from the two side surfaces; the damping sliding door buffer device includes a first hook and a second hook, and the two side surfaces of the first hook have a protruding third boss, and the two side surfaces of the second hook have a protruding fourth boss;

[0020] Two mirror-image first L-shaped grooves and a second L-shaped groove are provided on each side wall of the shell; the first hook is installed in the first hook groove, and the third boss and the first boss are respectively embedded in the first L-shaped groove, and the first hook cooperates with the shift block fixed on the door frame to realize the braking of the first slider; the second hook is installed in the second hook groove, and the fourth boss and the second boss are respectively embedded in the second L-shaped groove, and the second hook cooperates with the shift block fixed on the door frame to realize the braking of the second slider.

[0021] As a further improvement of the present invention, the damping sliding door buffer device includes a first roller assembly and a second roller assembly, the first roller assembly and the second roller assembly are respectively fixed at two ends of the housing, and the first roller assembly includes a first main bracket;

[0022] The first main support includes two parallel side plates, and each side plate is equipped with two first rollers. The rotating axes of the four first rollers are parallel to each other and located on the same horizontal plane, and the rotating axes of the four first rollers are staggered with each other.

[0023] As a further improvement of the present invention, the damping sliding door buffer device includes a hanging box assembly for fixing to the door leaf, the hanging box assembly includes a hanging box body, a third adjusting screw and a second adjusting rod, and the second adjusting rod has a third gear portion, and the screw head of the third adjusting screw has a fourth gear;

[0024] The hanging box body is suspended below the first main bracket by a third adjusting screw, and the second adjusting rod is installed on the hanging box body in a manner that the third gear portion is engaged with the fourth gear portion, and the hanging height of the hanging box body is adjusted by rotating the second adjusting rod.

[0025] As a further improvement of the present invention, the two side surfaces of the hanging box body respectively have first ribs arranged in the horizontal direction;

[0026] The hanging box assembly includes a clamping block, a clamping nut, and a clamping screw. The clamping block includes a third wedge surface, a first clamping block adjustment hole, and two second convex ribs. The first clamping block adjustment hole has an elliptical cross-section and passes through the clamping block via the third wedge surface. The two second convex ribs protrude from both side surfaces of the clamping block.

[0027] The hanging box body is provided with a clamping block mounting groove and a second clamping block adjustment hole, and the clamping block mounting groove includes a fourth wedge surface, and the second clamping block adjustment hole passes through the fourth wedge surface; the clamping block and the clamping nut are respectively arranged in the clamping block mounting groove, and the third wedge surface abuts the fourth wedge surface, and the second convex rib is parallel to the first convex rib, the clamping screw passes through the second clamping block adjustment hole and the first clamping block adjustment hole and is threadedly connected to the clamping nut, and the relative position of the third wedge surface and the fourth wedge surface is adjusted so that the second convex rib is flush with or staggered with the first convex rib.

[0028] The present invention also provides a sliding door, which includes a door frame, a door leaf and the damping sliding door buffer device as described above, and the damping sliding door buffer device is slidably connected to the door frame and fixedly connected to the door leaf.

[0029] The present invention has the following beneficial effects: by adding a compression spring between the first slider and the second slider, and allowing the compression spring to store energy when either the first slider or the second slider is braked, the impact force exerted on the damping cylinder is reduced during the closing process of the door leaf, thereby extending the service life of the damping cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the exploded structure of the damping sliding door buffer device provided by an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the assembly of the first slider, the first hook, and the tension spring adjustment block in the damping sliding door buffer device provided by an embodiment of the present invention;

[0032] Figure 3 2 is a schematic cross-sectional structural diagram of a first sliding block in a damping sliding door buffer device provided by an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the assembly of the second slider, the second hook, and the compression spring adjustment component in the damping sliding door buffer device provided by an embodiment of the present invention;

[0034] Figure 5 1 is a schematic cross-sectional view of the second sliding block in the damping sliding door buffer device provided by an embodiment of the present invention;

[0035] Figure 6 This is a structural diagram of the assembled state of the damping sliding door buffer device provided by an embodiment of the present invention;

[0036] Figure 7 1 is a schematic diagram of the exploded structure of the first roller assembly in the damping sliding door buffer device provided by an embodiment of the present invention;

[0037] Figure 8 is a top view of the first roller assembly in the damping sliding door buffer device provided by an embodiment of the present invention;

[0038] Figure 9 1 is a schematic diagram of the exploded structure of the hanging box assembly in the damping sliding door buffer device provided by an embodiment of the present invention;

[0039] Figure 10 Schematic diagram of the assembly of the hanging box assembly to the first roller assembly in the damping sliding door buffer device provided by an embodiment of the present invention;

[0040] Figure 11 is a schematic diagram of the damping sliding door buffer device provided by an embodiment of the present invention when the first slider is braked;

[0041] Figure 12 It is a structural schematic diagram of the damping sliding door buffer device provided by an embodiment of the present invention during the process of compressing the spring energy storage. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] like Figure 1 Figure 2 shows an exploded schematic diagram of a damping sliding door buffer device according to one embodiment of the present invention. This device can be used for sliding doors, cabinet doors, sliding windows, and the like. The damping sliding door buffer device of this embodiment includes a housing, a first slider 21, a second slider 31, a damping cylinder 41, a compression spring 51, and a tension spring 61. The first slider 21 and the second slider 31 are each slidably mounted within the housing. The damping cylinder 41, the compression spring 51, and the tension spring 61 are also located within the housing. During use, the housing is directly or indirectly secured to the door leaf and moves with it.

[0044] Specifically, the housing can be constructed from two elongated plates 11, each formed with a sliding space and a guide structure between them. The first and second sliders 21, 31 are mounted within the sliding space and can slide in a predetermined direction under the guidance of the guide structure. To meet practical requirements, the plates 11 can be made of metal. In practical applications, the housing, first and second sliders 21, 31, and damping cylinder 41 can all employ structures similar to those of existing damping and buffering devices, and will not be further described here.

[0045] The above-mentioned damping cylinder 41, compression spring 51 and tension spring 61 are respectively located between the first slider 21 and the second slider 31, wherein the two ends of the damping cylinder 41 are respectively fixed to the first slider 21 and the second slider 31, the two ends of the compression spring 51 are respectively abutted against the first slider 21 and the second slider 31, and the tension spring 61 is respectively fixed to the first slider 21 and the second slider 31.

[0046] When the housing moves with the door leaf and either the first or second slider 21 or 31 is braked (e.g., blocked by a shift block 71 fixed to the door frame), the compression spring 51 absorbs the kinetic energy of the door leaf's movement to store energy, while simultaneously slowing the door leaf's movement until the door leaf is fully closed (at which point the distance between the first and second sliders 21 and 31 reaches its minimum distance). The tension spring 61, when the housing moves and either the first or second slider 21 or 31 is braked, pulls the unbraked slider to release its elastic potential energy. When the door leaf opens from a closed state, the compression spring 51 releases its elastic potential energy and pushes the slider away from the shift block 71, driving the housing and door leaf to move. Simultaneously, the slider abutting the shift block 71 also slides relative to the housing, increasing the distance between the two sliders. The tension spring 61 then begins to store energy until the slider abutting the shift block 71 separates from the shift block 71.

[0047] That is, when the door is open, the distance between the first slider 21 and the second slider 31 is at its maximum, the tension spring 61 is in a stored energy state, and the compression spring 51 and the damping cylinder 41 are in a free state (or a slightly stored energy state). During the movement and closing of the door, if either the first slider 21 or the second slider 31 is blocked by the shift block 71, the blocked slider stops sliding, and the tension spring 61 releases its elastic potential energy, pulling the unblocked slider forward and driving the housing forward. Under the action of the tension spring 61 and the inertia of the door movement, the door and the housing continue to move in the original direction. At the same time, the compression spring 51 and the damping cylinder 41 absorb the kinetic energy of the door movement, reducing the movement speed of the door until the door is fully closed and the stored energy of the compression spring 51 and the damping cylinder 41 reaches its maximum value. The presence of the compression spring 51 prevents the inertia of the tension spring 61 and the door movement from acting simultaneously on the damping cylinder 41 and generating a large impact force on the damping cylinder 41, thereby extending the service life of the damping cylinder 41. During the door opening process, the compression spring 51 and the damping cylinder 41 release elastic potential energy to push the housing to move in the door opening direction, thereby using less force to push the door to move, achieving the effect of labor-saving door opening.

[0048] In practical applications, the above structure can also be applied to single-sided sliding door buffering, that is, the damping sliding door buffering device only includes one slider, such as the first slider 21. Accordingly, one end of the damping cylinder 41, the compression spring 51, and the tension spring 61 are respectively connected to the first slider 21, and the other ends are respectively connected to the outer shell.

[0049] Combine Figure 2-5 As shown, in one embodiment of the present invention, the first slider 21 is provided with a first limiting column 211. When the first slider 21 is assembled to the housing and the housing is mounted to the door leaf, the first limiting column 211 is arranged in the horizontal direction and faces the second slider 31. Accordingly, the damping sliding door buffer device also includes a compression spring support block 34, a compression spring adjustment block 32 and a first adjustment screw 33. The compression spring support block 34 is provided with a second limiting column 341 and a first wedge surface 342. The compression spring adjustment block 32 includes a second wedge surface 321. The compression spring support block 34 is slidably mounted on the second slider 31 in such a manner that the second limiting column 341 faces the first slider 21 and is coaxial with the first limiting column 211. The compression spring 51 is installed between the first slider 21 and the second slider 31 in such a manner that the two ends are respectively sleeved on the first limiting column 211 and the second limiting column 341.

[0050] The compression spring adjustment block 32 has a vertical screw hole 322. The compression spring adjustment block 32 is secured to the second slider 31 via a first adjustment screw 33, with the second wedge surface 321 abutting against the first wedge surface 342 of the compression spring support block 34. The spacing between the first limiting post 211 and the second limiting post 341 changes as the first adjusting screw 33 moves within the vertical screw hole 322. In other words, the length of the compression spring 51 (i.e., the amount of compression) can be adjusted by rotating the first adjusting screw 33.

[0051] Compared with the existing damping and buffering device which can only be applied to door leaves of one weight, different door leaves require damping cylinders of different specifications. The length adjustment structure of the compression spring 51 can make up for the defect that the damping force of the damping cylinder 41 cannot be adjusted, so that the damping sliding door buffering device can be applied to door leaves of different weights. By adjusting the length of the compression spring 51, it can adapt to door leaves of different weights and maintain the smoothness of the damping process.

[0052] Specifically, the second slider 31 has a support block slot 311, a first adjustment block slot 316, and a first screw hole 319. The support block slot 311 is located on the side of the second slider 31, the first adjustment block slot 316 is located on the top surface of the second slider 31, and the first screw hole 319 extends vertically from the bottom of the second slider 31 to the first adjustment block slot 316. The support block slot 311 and the first adjustment block slot 316 are connected. The housing has a clearance hole or clearance groove corresponding to the first screw hole 319. During assembly, the compression spring support block 34 is inserted into the support block slot 311, and the compression spring adjustment block 32 is inserted into the first adjustment block slot 316 and can slide vertically therein. The compression spring adjustment block 32 is secured by the first adjustment screw 33 passing through the first screw hole 319. The second wedge surface 321 pushes the first wedge surface 342 to change the relative position of the compression spring support block 34 on the second slider 31, thereby adjusting the length of the compression spring 51. In particular, in order to improve the stability of the vertical sliding of the compression spring adjustment block 32 in the first adjustment block groove 316, the surface of the compression spring adjustment block 32 may have a vertically arranged ridge 323, and accordingly, the first adjustment block groove 316 has a corresponding groove 317, and when the compression spring adjustment block 32 is assembled into the first adjustment block groove 316, the ridge on the surface of the compression spring adjustment block 32 is embedded in the corresponding groove 317.

[0053] In actual applications, the compression spring support block 34 and the compression spring adjustment block 32 can also be assembled to the second slider 31 and the relative position of the compression spring support block 34 on the second slider 31 can be adjusted in other ways, which will not be repeated here.

[0054] In particular, in order to increase the damping force, two compression springs 51 can be arranged between the first slider 21 and the second slider 31. Accordingly, the first slider 21 has two first limiting columns 211, and the second slider 31 is equipped with two compression spring support blocks 34, and the two compression spring support blocks 34 are adjusted to their positions on the second slider 31 through the same compression spring adjustment block 32.

[0055] Also combined Figure 2-5 As shown, in one embodiment of the present invention, a pulley 36 is disposed within the second slider 31. A tension spring 61 is assembled between the first slider 21 and the second slider 31, with its middle portion passing around the pulley 36 and abutting against its surface, and its two ends being directly or indirectly fixed to the first slider 21. The damping cylinder 41 is located between the two straight portions of the tension spring 61, and the tensioning direction of the tension spring 61 is parallel to the axial direction of the damping cylinder 41. This arrangement facilitates aligning the tension of the tension spring 61 with the damping force of the damping cylinder 41 and the rebound force of the compression spring 51, thereby preventing the slider from deviating during sliding and increasing the friction between the slider and the housing.

[0056] Specifically, the second slider 31 has a tension spring slot 313, and the sidewall of the tension spring slot 313 has a pin hole 318. The pulley 36 is assembled in the tension spring slot 313 of the second slider 31 via a pin 37 passing through the pin hole 318. In actual application, the pulley 36 can also be assembled to the second slider 31 using other methods, which will not be repeated here.

[0057] In one embodiment of the present invention, the damping sliding door buffer device further includes a tension spring adjustment block 22 and a second adjustment screw 23, wherein the tension spring adjustment block 22 has a horizontal screw hole 222 and two tension spring fixing slots 221; and the first slider 21 is provided with a horizontal sliding slot 217 adapted to the tension spring adjustment block 22. The tension spring adjustment block 22 is slidably mounted within the horizontal sliding slot 217 of the first slider 21, with the two tension spring fixing slots 221 facing the second slider 31. The two ends of the tension spring 61 are respectively fixed within the two tension spring fixing slots 221, and the relative position of the tension spring adjustment block 22 and the first slider 21 changes with the change in the stroke of the second adjustment screw 23 within the horizontal screw hole 222. That is, by screwing the second adjustment screw 23, the position of the tension spring adjustment block 22 within the horizontal sliding slot 217 of the first slider 21 can be adjusted, thereby achieving length adjustment of the tension spring 61 (i.e., adjustment of the tension amount).

[0058] The length adjustment structure of the tension spring 61 can further adjust the damping force between the first slider 21 and the second slider 31, making the damping sliding door buffer device suitable for use with different door leaf weights. In particular, by adjusting the length of the tension spring 61, the damping closing process of the door leaf can be smooth and silent.

[0059] Specifically, the first slider 21 may be provided with a vertical second adjustment slot 213 and a notch 219 for inserting the second adjustment screw 23 into the horizontal sliding slot 217. The opening of the second adjustment slot 213 is located on the top surface of the first slider 21. The tension spring adjustment block 22 is mounted to the horizontal sliding slot 217 via the second adjustment slot 213. The second adjustment screw 23 is inserted into the horizontal sliding slot 217 through the notch 219 and is threadedly connected to the tension spring adjustment block 22. To ensure the stability of the tension spring adjustment block 22 sliding within the horizontal sliding slot 217, the tension spring adjustment block 22 may have protrusions 223 on both sides, giving the entire tension spring adjustment block 22 a cross-shaped shape. Accordingly, the horizontal sliding slot 217 includes recesses corresponding to the protrusions 223. When the tension spring adjustment block 22 is assembled to the first slider 21, the protrusions 223 engage with the recesses within the horizontal sliding slot 217. In practice, the tension spring adjustment block 22 and the second adjustment screw 23 may also be assembled to the first slider 21 using other methods, which will not be described here.

[0060] Furthermore, the first and second sliders 21 and 31 respectively have mounting grooves 212 and 312 for mounting the damping cylinder 41. Accordingly, the damping cylinder 41 has mounting heads at both ends, and the damping cylinder 41 is secured to the first and second sliders 21 and 31 by engaging the mounting grooves 212 and 312 of the first and second sliders 21 and 31, respectively. In actual applications, the damping cylinder 41 may also be mounted to the first and second sliders 21 and 31 using other methods, which will not be described in detail here.

[0061] In one embodiment of the present invention, the damping sliding door buffer device further includes a first adjustment rod 24 having a first gear portion 241 thereon; correspondingly, the screw head of the second adjustment screw 23 has a second gear portion 231 thereon. The bottom of the first slider 21 has a vertical slot 218 (the bottom of the housing has a corresponding clearance hole or clearance groove). The first adjustment rod 24 fits within the vertical slot 218, and the first gear portion 241 of the first adjustment rod 24 meshes with the second gear portion 231 of the second adjustment screw 23. Thus, rotating the first adjustment rod 24 rotates the second adjustment screw 23, thereby adjusting the length of the tension spring 61.

[0062] Through the above structure, the position of the tension spring adjustment block 22 can be adjusted from the bottom of the shell by simply providing an avoidance opening or avoidance groove at the bottom of the shell without disassembling the shell, which facilitates operation.

[0063] In one embodiment of the present invention, the first slider 21 is provided with a first hook groove 214 embedded in the top surface and first bosses 215 protruding from both side surfaces. The second slider 31 is provided with a second hook groove 314 embedded in the top surface and second bosses 315 protruding from both side surfaces. Furthermore, the damping sliding door buffer device further includes a first hook 25 and a second hook 35. The first hook 25 has protruding third bosses 252 on both side surfaces, and the second hook 35 has protruding fourth bosses 352 on both side surfaces.

[0064] Correspondingly, two mirror-imaged first L-shaped grooves 111 and second L-shaped grooves 112 are provided on each side wall of the shell (for example, each splint); during assembly, the first hook 25 is installed in the first hook groove 214 of the first slider 21, and the third boss 252 and the first boss 215 are respectively embedded in the first L-shaped groove 111, and the sliding direction of the first slider 21 is guided by the third boss 252 and the first boss 215, and the braking of the first slider 21 is achieved by the first hook 25 cooperating with the shift block 71 fixed to the door frame; the second hook 35 is installed in the second hook groove 314, and the fourth boss 352 and the second boss 315 are respectively embedded in the second L-shaped groove 112, and the sliding direction of the second slider 31 is guided by the fourth boss 352 and the second boss 315, and the braking of the second slider 31 is achieved by the second hook 35 cooperating with the shift block 71 fixed to the door frame.

[0065] Bidirectional sliding door buffering can be achieved by the cooperation of the first hook 25, the second hook 35 and the shift block 71. In actual application, the first slider 21 and the second slider 31 can also be braked in other ways, which will not be described in detail here.

[0066] Combine Figure 6 As shown, the damping sliding door buffer device may further include a first roller assembly 81 and a second roller assembly 82, wherein the first roller assembly 81 and the second roller assembly 82 are respectively fixed to two ends of the housing (e.g., by screws or rivets). The first roller assembly 81 and the second roller assembly 82 can be used to install the damping sliding door buffer device in the sliding rail of the door frame, thereby facilitating the sliding movement of the damping sliding door buffer device relative to the door frame.

[0067] Combine Figure 7-Figure 8 As shown, the first roller assembly 81 specifically includes a first main bracket 811, and the first main bracket 811 includes a base plate 8111 and two parallel side plates 8112. Each side plate 8112 is provided with two countersunk holes 8113, and the two first rollers 812 are respectively mounted on the countersunk holes 8113 via rotating shafts 813 (e.g., rivets). In particular, the four countersunk holes 8113 on the two side plates 8112 are located on the same horizontal plane and staggered with each other, that is, the rotating shafts 813 of the four first rollers 812 are parallel to each other and located on the same horizontal plane, and the rotating shafts 813 of the four first rollers 812 are staggered with each other. Through the above structure, the four first rollers 812 can be staggered, which can increase the wheelbase of the first rollers 812 in the direction of door movement, thereby improving the operating stability and load-bearing capacity of the damping sliding door buffer device.

[0068] The second roller assembly 82 specifically includes a second main bracket and two coaxial second rollers. Of course, in actual application, the first roller assembly 81 and the second roller assembly 82 can also adopt other existing structures, which will not be repeated here.

[0069] Combine Figure 9 As shown, in one embodiment of the present invention, the damping sliding door buffer device also includes a hanging box assembly 83 for fixing to the door leaf, the hanging box assembly 83 includes a hanging box body 831, a third adjusting screw 833 and a second adjusting rod 834, the second adjusting rod 834 has a third gear portion 8341, and the screw head of the third adjusting screw 833 has a fourth gear 8331.

[0070] The hanging box body 831 is suspended below the first main bracket 811 of the first roller assembly 81 via a third adjustment screw 833. A second adjustment rod 834 is mounted on the hanging box body 831 with a third gear portion 8341 meshing with a fourth gear portion 8331. Rotating the second adjustment rod 834 causes the third adjustment screw 833 to rotate accordingly, thereby adjusting the hanging height of the hanging box body 831. Specifically, the hanging box body 831 has a hanging hole 8313. Accordingly, a rivet nut 835 is provided on the bottom plate 8111 of the first main bracket 811 of the first roller assembly 81. The third adjustment screw 833 passes through the first hanging hole 8313 and is threadedly engaged with the rivet nut 835, thereby achieving the hanging assembly of the hanging box assembly 83. In particular, a bulge (i.e., an annular protruding structure) can be provided on the base plate 8111 at the contact portion with the rivet nut 835 to reduce the contact area between the rivet nut 835 and the base plate 8111, while leaving swing space for the rivet nut 835 to achieve self-balancing of the damping sliding door buffer device.

[0071] To adapt the hanging box assembly 83 to mounting slots of varying heights, in one embodiment of the present invention, the hanging box body 831 includes horizontally disposed first ribs 8311 on each side. Furthermore, the hanging box assembly 83 also includes a clamping block 836, a clamping nut 837, and a clamping screw 838. The clamping block 836 includes a third wedge surface 8362, a first clamping block adjustment hole 8363, and two second ribs 8361. The first clamping block adjustment hole 8363 has an elliptical cross-section (i.e., its vertical dimension is greater than its horizontal dimension) and extends horizontally through the clamping block 836 via the third wedge surface 8362. The two second ribs 8361 protrude from the two sides of the clamping block 836. Accordingly, the hanging box body 831 includes a clamping block mounting slot and a second clamping block adjustment hole. The clamping block mounting slot opens on the bottom surface of the hanging box body 831 and includes a fourth wedge surface, through which the second clamping block adjustment hole passes.

[0072] The clamping block 836 and clamping nut 837 are respectively positioned within the clamping block mounting slot, with the third wedge surface 8362 abutting the fourth wedge surface and the second rib 8361 parallel to the first rib 8311. The clamping screw 838 passes through the second clamping block adjustment hole and the first clamping block adjustment hole 8363, then is threadedly engaged with the clamping nut 837. The relative position of the third wedge surface 8362 and the fourth wedge surface is adjusted to align or offset the second rib 8361 with the first rib 8311. This allows the hanging box assembly 83 to be compatible with a variety of profiles of varying structural dimensions without requiring screw fixation, reducing the number of accessories and ensuring a stable connection.

[0073] Specifically, the clamping screw 838 has an axial through-hole 8381, which can be a stepped hole. At the head of the clamping screw 838, the diameter of the axial through-hole 8381 is smaller than the diameter of the second adjustment rod 834. At the end of the clamping screw 838 away from the screw head, the diameter of the axial through-hole 8381 is slightly larger than the diameter of the second adjustment rod 834. The second adjustment rod 834, used to adjust the vertical height of the hanging box body 831, is inserted into the axial through-hole 8381 from the end away from the screw head. Thus, the clamping screw 838 can limit the second adjustment rod 834 and allow the second adjustment rod 834 to be screwed at the screw head portion by passing through the axial through-hole 8381. Furthermore, an operating portion (e.g., a hexagonal shape) for screwing the clamping screw 838 is formed at one end of the screw head. Through the above structure, the hanging height of the hanging box body 831 and the relative height of the second rib can be adjusted on the same end surface of the hanging box assembly 83, saving operating space.

[0074] Combine Figure 10 As shown, the damping sliding door buffer device can be assembled into the door frame profile 91 via the first roller assembly 81 and the second roller assembly 82, and the first roller 812 of the first roller assembly 81 and the second roller of the second roller assembly 82 are respectively embedded in the guide rails of the door frame profile 91 and can slide relative to the door frame profile 91. The hanging box assembly 83 is fixed to the door leaf profile 92 by embedding the first rib 8311 on the hanging box body 831 and the second rib 8361 on the clamping block 836 into the embedded groove of the door leaf profile 92. The position of the second rib 8361 can be adjusted to be staggered with the position of the first rib 8311 to adapt to the height of the notch of different door leaf profiles 92, thereby ensuring the stability of its fixation to the door groove profile 92.

[0075] Figure 11-12 The working principle of the damping sliding door buffer device of the present invention is explained by taking the closing of the left-moving door leaf as an example. The process of closing the right-moving door leaf is similar.

[0076] When the door leaf is pushed to the left to close, the damping sliding door buffer device moves to the left along with the door leaf; Figure 11As shown, when the first hook 25 on the first slider 21 is blocked by the shift block 71, the first slider 21 is braked and stops moving left, and the damping sliding door buffer device continues to move left under the combined action of the inertia of the door leaf and the tension spring 61. The first slider 21 and the first hook 25 slide in the first L-shaped slide groove 111 of the housing, and the compression spring 51 and the damping oil cylinder 41 store energy and slow down the speed of the damping sliding door buffer device and the door leaf moving left until they stop. At this time, the stored energy of the compression spring 51 and the damping oil cylinder 41 reaches the maximum value, as shown in FIG. Figure 12 shown.

[0077] When the door leaf is pushed rightward to open the door in the closed state, the damping sliding door buffer device moves rightward with the door leaf. The compression spring 51 and the damping oil cylinder 41 release their elastic potential energy to push the damping sliding door buffer device rightward until the first slider 21 and the first hook 25 reach the right end of the first L-shaped sliding groove 111, thereby achieving the effect of labor-saving door opening. During this process, the tension spring 61 is stretched and energy is stored.

[0078] The present invention also provides a sliding door, which includes a door frame, a door leaf and the damping sliding door buffer device as described above, wherein the damping sliding door buffer device is slidably connected to the door frame and fixedly connected to the door leaf.

[0079] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A damping sliding door buffer device, comprising a housing, a first slider and a damping oil cylinder, wherein the first slider is slidably mounted in the housing, and one end of the damping oil cylinder is connected to the first slider, characterized in that: The damping sliding door buffer device also includes: a compression spring, one end of which is connected to the first slider, and wherein the compression spring stores energy when the first slider is braked during the movement of the housing until the housing stops moving; a tension spring, one end of which is connected to the first slider, wherein the tension spring pulls the housing to release elastic potential energy when the first slider is braked during the movement of the housing until the housing stops moving, and when the compression spring reaches a maximum energy storage state, the tension of the tension spring is greater than or equal to the rebound force of the compression spring; The damping sliding door buffer device also includes a second slider slidably mounted in the housing; the second slider is located at an end of the damping oil cylinder away from the first slider and is connected to the damping oil cylinder; the compression spring and the tension spring are respectively located between the first slider and the second slider, and the other end of the compression spring and the other end of the tension spring are respectively connected to the second slider; the compression spring stores energy when the second slider is braked during the movement of the housing until the housing stops moving; the tension spring pulls the housing to release elastic potential energy when the second slider is braked during the movement of the housing until the housing stops moving; The first sliding block has a first limiting post arranged horizontally and facing the second sliding block; the damping sliding door buffer device includes a compression spring support block, a compression spring adjusting block and a first adjusting screw, the compression spring support block has a second limiting post and a first wedge surface, and the compression spring adjusting block includes a second wedge surface; the compression spring support block is slidably mounted on the second sliding block in a manner that the second limiting post faces the first sliding block and is coaxial with the first limiting post, and the two ends of the compression spring are respectively sleeved on the first limiting post and the second limiting post, and the compression direction of the compression spring is parallel to the axial direction of the damping oil cylinder; the compression spring adjusting block has a vertical screw hole, and the compression spring adjusting block is fixed to the second sliding block by the first adjusting screw in a manner that the second wedge surface is abutted against the first wedge surface of the compression spring support block, and the distance between the first limiting post and the second limiting post changes with the change of the stroke of the first adjusting screw in the vertical screw hole; A pulley is provided in the second slider; the tension spring is fixed between the first slider and the second slider in a manner that the middle portion of the tension spring passes around the pulley and adheres to the surface of the pulley, and the two ends are respectively assembled to the first slider.

2. The damping sliding door buffer device according to claim 1, characterized in that: The damping oil cylinder is located between the two straight parts of the tension spring, and the tensioning direction of the tension spring is parallel to the axial direction of the damping oil cylinder; The damping sliding door buffer device includes a tension spring adjustment block and a second adjustment screw, the tension spring adjustment block has a horizontal screw hole and two tension spring fixing slots; the first slider is provided with a horizontal sliding slot adapted to the tension spring adjustment block; The tension spring adjustment block is slidably installed in the horizontal sliding groove of the first slider, the two ends of the tension spring are respectively fixed in the two tension spring fixing grooves, and the relative position of the tension spring adjustment block and the first slider changes with the change of the stroke of the second adjusting screw in the horizontal screw hole.

3. The damping sliding door buffer device according to claim 2, characterized in that: The damping sliding door buffer device includes a first adjusting rod, and the first adjusting rod has a first gear portion; the screw head of the second adjusting screw has a second gear portion; The first sliding block has a vertical groove, the first adjusting rod is assembled in the vertical groove, and the first gear portion of the first adjusting rod is meshed with the second gear portion of the second adjusting screw.

4. The damping sliding door buffer device according to any one of claims 1 to 3, characterized in that: The first slider is provided with a first hook groove embedded in the top surface and a first boss protruding from the two side surfaces, and the second slider is provided with a second hook groove embedded in the top surface and a second boss protruding from the two side surfaces; the damping sliding door buffer device includes a first hook and a second hook, and the two side surfaces of the first hook have a protruding third boss, and the two side surfaces of the second hook have a protruding fourth boss; Two mirror-image first L-shaped grooves and a second L-shaped groove are provided on each side wall of the shell; the first hook is installed in the first hook groove, and the third boss and the first boss are respectively embedded in the first L-shaped groove, and the first hook cooperates with the shift block fixed on the door frame to realize the braking of the first slider; the second hook is installed in the second hook groove, and the fourth boss and the second boss are respectively embedded in the second L-shaped groove, and the second hook cooperates with the shift block fixed on the door frame to realize the braking of the second slider.

5. The damping sliding door buffer device according to any one of claims 1 to 3, characterized in that: The damping sliding door buffer device includes a first roller assembly and a second roller assembly, the first roller assembly and the second roller assembly are respectively fixed at two ends of the housing, and the first roller assembly includes a first main bracket; The first main support includes two parallel side plates, and each side plate is equipped with two first rollers. The rotating axes of the four first rollers are parallel to each other and located on the same horizontal plane, and the rotating axes of the four first rollers are staggered with each other.

6. The damping sliding door buffer device according to claim 5, characterized in that: The damping sliding door buffer device includes a hanging box assembly for fixing to the door leaf, the hanging box assembly includes a hanging box body, a third adjusting screw and a second adjusting rod, the second adjusting rod has a third gear portion, and the screw head of the third adjusting screw has a fourth gear; The hanging box body is suspended below the first main bracket by a third adjusting screw, and the second adjusting rod is installed on the hanging box body in a manner that the third gear portion is engaged with the fourth gear portion, and the hanging height of the hanging box body is adjusted by rotating the second adjusting rod.

7. The damping sliding door buffer device according to claim 6, characterized in that: The two side surfaces of the hanging box body respectively have first ribs arranged in the horizontal direction; The hanging box assembly includes a clamping block, a clamping nut, and a clamping screw. The clamping block includes a third wedge surface, a first clamping block adjustment hole, and two second convex ribs. The first clamping block adjustment hole has an elliptical cross-section and passes through the clamping block via the third wedge surface. The two second convex ribs protrude from both side surfaces of the clamping block. The hanging box body is provided with a clamping block mounting groove and a second clamping block adjustment hole, and the clamping block mounting groove includes a fourth wedge surface, and the second clamping block adjustment hole passes through the fourth wedge surface; the clamping block and the clamping nut are respectively arranged in the clamping block mounting groove, and the third wedge surface abuts the fourth wedge surface, and the second convex rib is parallel to the first convex rib, the clamping screw passes through the second clamping block adjustment hole and the first clamping block adjustment hole and is threadedly connected to the clamping nut, and the relative position of the third wedge surface and the fourth wedge surface is adjusted so that the second convex rib is flush with or staggered with the first convex rib.

8. A sliding door, characterized in that: The invention comprises a door frame, a door leaf and a damping sliding door buffer device according to any one of claims 1 to 7, wherein the damping sliding door buffer device is slidably connected to the door frame and fixedly connected to the door leaf.

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