Buffer oil cylinder, bidirectional buffer, bidirectional buffer device and storage cabinet

Abstract

The utility model provides a buffer oil cylinder, a bidirectional buffer, a bidirectional buffer device and a storage cabinet. The buffering oil cylinder comprises a cylinder body, a piston rod, a one-way valve, an oil seal and a first elastic piece. The first end of the piston rod extends into the cylinder body and can reciprocate in the axial direction of the cylinder body; the oil seal is hermetically sleeved between the outer wall of the piston rod and the inner wall of the cylinder body, is closer to the second end of the piston rod than the one-way valve and can reciprocate in the axial direction of the cylinder body; the first elastic piece is arranged between the oil seal and the cylinder body, located on the side, away from the one-way valve, of the oil seal and used for providing thrust pointing to the one-way valve. The one-way valve comprises a valve core and a valve plate; the valve element is fixedly sleeved on the outer wall of the first end of the piston rod, a gap is reserved between the valve element and the inner wall of the cylinder body, and a through hole penetrating through two opposite sides of the valve element in the axial direction of the cylinder body is formed in the valve element. The one-way valve and / or the piston rod are / is provided with a stop structure, and the valve plate is arranged between the valve element and the stop structure and used for reciprocating between the valve element and the stop structure in the axial direction of the cylinder body so as to open or block the through hole.

Description

Technical Field

[0001] The utility model belongs to the technical field of buffering, and in particular relates to a buffer oil cylinder, a bidirectional buffer, a bidirectional buffer device and a storage cabinet. Background Art

[0002] The wardrobe has the problem that the sliding door cannot be closed tightly and there is noise when closing, which will cause great trouble to the user. These problems can be solved well by installing a buffer device on the sliding door. At present, the mainstream sliding door buffer devices on the market mainly include unidirectional buffer devices and bidirectional buffer devices. Among them, the unidirectional buffer device cannot achieve bidirectional buffering of the sliding door. The bidirectional buffering of the sliding door can only be achieved by installing a unidirectional buffer device at the opposite ends of the sliding door, which is costly. The existing bidirectional buffer device has the defects of complex structure and inconvenient installation. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a buffer oil cylinder, a bidirectional buffer, a bidirectional buffer device and a locker, wherein the buffer oil cylinder has a bidirectional buffering function, and when the bidirectional buffer device using the buffer oil cylinder as a damping device is installed on the sliding door of the locker, not only can the bidirectional buffering of the sliding door be achieved, but also the overall structure is simple, the cost is low and it is easy to install.

[0004] In order to achieve the above objectives, in a first aspect, the utility model provides a buffer oil cylinder, comprising:

[0005] Cylinder body;

[0006] A piston rod, a first end of which extends into the cylinder body and is installed in the cylinder body, and the piston rod can reciprocate along the axial direction of the cylinder body;

[0007] A one-way valve is disposed in the cylinder;

[0008] An oil seal is sealingly sleeved between the outer wall of the rod portion of the piston rod extending into the cylinder body and the inner wall of the cylinder body, the oil seal is closer to the second end of the piston rod than the one-way valve, and can reciprocate along the axial direction of the cylinder body;

[0009] a first elastic member, disposed between the oil seal and the cylinder body and located at a side of the oil seal away from the one-way valve, the first elastic member being used to provide a thrust to the oil seal directed toward the one-way valve;

[0010] In which, the one-way valve includes a valve core and a valve plate, the valve core is fixedly sleeved on the outer wall of the first end of the piston rod and has a gap with the inner wall of the cylinder body, the valve core is provided with a through hole, the through hole passes through the valve core on opposite sides of the axial direction of the cylinder body, the one-way valve and / or the piston rod are provided with a stop structure, the valve plate is arranged between the valve core and the stop structure, and the valve plate is used to reciprocate between the valve core and the stop structure along the axial direction of the cylinder body under the action of fluid thrust to open or block the through hole.

[0011] In a second aspect, the utility model provides a bidirectional buffer, comprising a frame, a pair of locks, a second elastic member and the buffer oil cylinder as described above, wherein the pair of locks, the second elastic member and the buffer oil cylinder are all accommodated in the frame, the pair of locks are movably connected to opposite ends of the buffer oil cylinder in a first direction, the second elastic member and the buffer oil cylinder are arranged side by side along a second direction, and opposite ends of the second elastic member are respectively connected to the pair of locks;

[0012] The pair of locks are movably connected to opposite ends of the frame in the first direction, respectively, and each of the locks can move relative to a corresponding end of the frame to drive the piston rod to reciprocate along the axial direction of the cylinder body.

[0013] In a third aspect, the utility model provides a bidirectional buffer device, comprising a pair of trigger blocks and the bidirectional buffer as described above;

[0014] Among them, each of the trigger blocks is used to be fixedly installed on a base component, the bidirectional buffer is used to be fixedly installed on a moving component, the moving component is slidably installed on the base component, and the bidirectional buffer can follow the moving component to reciprocate relative to the base component. The pair of trigger blocks and the bidirectional buffer are distributed at intervals along the movement direction of the moving component, and the pair of trigger blocks are respectively located on opposite sides of the bidirectional buffer, and are respectively used to cooperate with the pair of locks.

[0015] In a fourth aspect, the utility model provides a storage cabinet, comprising a cabinet body, a sliding door and the bidirectional buffer device as described above;

[0016] Wherein, the cabinet body is a base component, and the sliding door is a moving component.

[0017] Compared with the prior art, the utility model has the following beneficial effects: in the buffer oil cylinder, bidirectional buffer, bidirectional buffer device and locker provided by the utility model, when any end of the buffer oil cylinder is subjected to a force along the axial direction of the cylinder body and directed to the inside of the cylinder body, the one-way valve can generate a large damping to play a buffering role, so that the buffer oil cylinder, the bidirectional buffer including the buffer oil cylinder, and the bidirectional buffer device including the bidirectional buffer all have a bidirectional buffering function. When the bidirectional buffer device is installed on the sliding door of a locker such as a wardrobe, it can not only realize the bidirectional buffering of the sliding door, but also has low cost, simple overall structure and easy installation.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiments of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are some implementation modes of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of a bidirectional buffer device provided in one embodiment of the utility model.

[0021] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure of the bidirectional buffer shown.

[0022] Figure 3 yes Figure 2 A cross-sectional view of the bidirectional buffer shown.

[0023] Figure 4 yes Figure 2 A partial exploded structural diagram of the bidirectional buffer shown.

[0024] Figure 5 yes Figure 4 A cross-sectional view of the bidirectional buffer shown.

[0025] Figure 6 yes Figure 4 The bidirectional buffer is further decomposed into a schematic diagram.

[0026] Figure 7 yes Figure 5 A schematic diagram of the three-dimensional structure of the first lock is shown.

[0027] Figure 8 yes Figure 5An enlarged schematic diagram of part A is shown.

[0028] Fig. 9 yes Figure 5 An enlarged schematic diagram of part B is shown.

[0029] Fig.10 yes Figure 8 Schematic diagram of the three-dimensional structure of the piston rod and the one-way valve.

[0030] Fig.11 yes Figure 1 The schematic diagram of the initial state of the bidirectional buffer device applied to the locker is shown.

[0031] Fig.12 yes Fig.11 A partial cross-sectional view of the bidirectional buffer device and the cabinet shown.

[0032] Fig.13 yes Fig.11 The schematic diagram of the process of the bidirectional buffer device following the sliding door closing to the left is shown.

[0033] Fig.14 yes Fig.13 The bidirectional buffer device shown is a schematic diagram of the process of the sliding door opening to the right after closing to the left.

[0034] Fig.15 yes Fig.11 The schematic diagram of the process of the bidirectional buffer device following the sliding door closing to the right is shown.

[0035] Fig.16 yes Fig.15 The bidirectional buffer device shown is a schematic diagram of the process of the sliding door opening to the left after closing to the right.

[0036] Description of main reference numerals:

[0037] 100-bidirectional buffer device; 200-cabinet; 1-first trigger block; 2-second trigger block; 3-bidirectional buffer;

[0038] 31-frame; 310-receiving groove; 311-first guide groove; 312-second guide groove; 3111-strip groove; 3112-arc groove;

[0039] 32-lock buckle; 321-first lock buckle; 322-second lock buckle; 323-lock buckle body; 324-first guide slide column; 325-second guide slide column; 326-elastic hook; 327-pry handle; 328-universal joint slot; 329-spring slot;

[0040] 34-buffer oil cylinder; 340-oil storage chamber; 341-cylinder body; 3410-cylinder barrel; 3411-first sealing plug; 3412-second sealing plug; 3413-air-permeable through hole; 3415-annular step; 342-piston rod; 3421-first ball joint; 343-check valve; 3431-valve core; 34311-through hole; 34312-connecting rib; 3432-valve plate; 3433-valve plug; 34331-plug seat; 34332-plug column; 344-oil seal; 3441-positioning groove; 345-first elastic member; 346-stopper; 3460-bearing surface; 3461-bearing part; 3462-column part; 3463-butt surface; 3464-positioning flange; 347-connecting rod; 3472-second ball joint;

[0041] 33 - second elastic member; 35 - protection tube; 36 - first tube plug. DETAILED DESCRIPTION

[0042] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] Please combine Figure 1 and Figure 2 The embodiment of the utility model provides a bidirectional buffer device 100, including a bidirectional buffer 3 and a pair of trigger blocks (specifically Figure 1 The first trigger block 1 and the second trigger block 2 are shown in the figure. The first trigger block 1 and the second trigger block 2 are used to be fixedly mounted on a base component (not shown in the figure), and a moving component (not shown in the figure) is slidably mounted on the base component. The bidirectional buffer 3 is used to be fixedly mounted on the moving component and can follow the moving component to perform linear reciprocating motion relative to the base component. Figure 1 As shown, the first trigger block 1, the second trigger block 2 and the bidirectional buffer 3 are along the moving direction of the moving part ( Figure 1 The first trigger block 1 and the second trigger block 2 are respectively arranged on opposite sides of the bidirectional buffer 3. The first trigger block 1 and the second trigger block 2 are respectively used to engage with a pair of lock buckles 32 ( Figure 1 and Figure 2 The first lock buckle 321 and the second lock buckle 322 shown in the figure cooperate to enable the bidirectional buffer 3 to achieve the bidirectional buffer function, which will be described in detail later.

[0044] In the embodiment of the utility model, the bidirectional buffer device 100 can be, but is not limited to, applied to household products such as storage cabinets (such as wardrobes, drawer cabinets), floor-to-ceiling doors, and floor-to-ceiling windows. The first trigger block 1, the second trigger block 2, and the bidirectional buffer 3 need to be installed on different components according to the specific composition of the household product. For example, when the bidirectional buffer device 100 is applied to a wardrobe, the first trigger block 1 and the second trigger block 2 are both installed on the cabinet body of the wardrobe, and the bidirectional buffer 3 is installed on the sliding door of the wardrobe. The cabinet body and the sliding door are the aforementioned base component and the moving component, respectively; for another example, when the bidirectional buffer device 100 is applied to a floor-to-ceiling door, the first trigger block 1 and the second trigger block 2 are both installed on the door frame of the floor-to-ceiling door, and the bidirectional buffer 3 is installed on the sliding door of the floor-to-ceiling door. Correspondingly, the door frame and the sliding door are the aforementioned base component and the moving component, respectively.

[0045] It should be noted that in the embodiment of the present invention, the first trigger block 1 and the second trigger block 2 can adopt existing trigger blocks and be installed on corresponding base components such as cabinets or door frames through any connection method such as threaded connection and snap connection. Among them, the structure of the trigger block and the specific connection method between the trigger block and the base component such as cabinets or door frames are all existing technologies and will not be described in detail.

[0046] Please combine Figures 1 to 6 In the embodiment of the present utility model, the bidirectional buffer 3 includes a frame 31, a pair of locks 32, a second elastic member 33 and a buffer cylinder 34 received in the frame 31. Specifically, Figures 1 to 3 As shown, in one embodiment of the present invention, the frame 31 is provided with a receiving groove 310 along the length direction, and each of the lock buckle 32 , the second elastic member 33 and the buffer cylinder 34 is received in the receiving groove 310 .

[0047] like Figures 1 to 3 As shown, in the embodiment of the present utility model, a pair of lock buckles 32 includes a first lock buckle 321 and a second lock buckle 322, and the first lock buckle 321 and the second lock buckle 322 are respectively movably connected to the opposite ends of the buffer oil cylinder 34 in the first direction. The second elastic member 33 and the buffer oil cylinder 34 are arranged side by side along the second direction, and the opposite ends of the second elastic member 33 are respectively connected to the first lock buckle 321 and the second lock buckle 322. Figures 1 to 3 In the example, the first direction and the second direction are respectively the length direction and the height direction of the frame 31, that is, Figure 3 The left and right directions and the up and down directions shown; the aforementioned receiving groove 310 is opened on one of the side walls of the frame 31 in the second direction, and in the second elastic member 33 and the buffer cylinder 34 arranged side by side along the second direction, the second elastic member 33 is located on the side of the buffer cylinder 34 away from the receiving groove 310.

[0048] It should be noted that in an embodiment of the utility model, a pair of locks 32 are movably connected to the opposite ends of the frame 31 in the first direction, and each lock 32 can move relative to the corresponding end of the frame 31 to drive the piston rod 342 to reciprocate along the axial direction of the cylinder body 341, thereby enabling the buffer cylinder 34 to achieve a two-way buffering function.

[0049] For details, please combine Figures 1 to 4 as well as Figure 7 In the embodiment of the utility model, each lock buckle 32 is provided with a first guide slide column 324 and a second guide slide column 325 spaced apart along the first direction on at least one side in the third direction, and the frame 31 is provided with a guide slide groove on at least one side in the third direction corresponding to each lock buckle 32. Specifically, Figures 1 to 4 As shown, in one embodiment of the present invention, a first guide slot 311 is provided on the side wall of at least one side in the third direction of the receiving groove 310 for receiving the first lock buckle 321, and a second guide slot 312 is provided on the side wall of at least one side in the third direction of the receiving groove 310 for receiving the second lock buckle 322. The first guide slot 311 and the second guide slot 312 are both connected to the receiving groove 310 and are respectively located at opposite ends of the receiving groove 310 in the first direction. The first guide slide post 324 and the second guide slide post 325 of each lock buckle 32 are slidably installed in the corresponding guide slide slot, so that each lock buckle 32 is installed on the frame 31 through its own guide slide post cooperating with the corresponding guide slide slot on the frame 31, and the guide slide post of each lock buckle 32 can slide in the corresponding guide slide slot. Preferably, in Figures 1 to 4 In the example, each lock buckle 32 is provided with a first guide slide column 324 and a second guide slide column 325 on each side in the third direction, and a corresponding guide slide groove is provided on each side in the third direction of the portion of the frame 31 corresponding to each lock buckle 32, so that each lock buckle 32 can cooperate with the corresponding guide slide groove on the frame 31 through its own guide slide column on both sides of the third direction, which is conducive to improving the reliability of the lock buckle 32 installed on the frame 31 and the stability of the guide slide column of the lock buckle 32 when sliding in the corresponding guide slide groove. The third direction is the thickness direction of the frame 31, and the third direction is perpendicular to the first direction and the second direction mentioned above.

[0050] Please refer again Figures 1 to 4In the embodiment of the utility model, the first guide groove 311 includes a strip groove 3111 and an arc groove 3112 smoothly connected to one end of the strip groove 3111 away from the buffer cylinder 34, wherein the strip groove 3111 extends along the first direction, the arc groove 3112 is located on the side of the strip groove 3111 close to the second elastic member 33 and extends in a direction away from the second elastic member 33, and the curvature center of the arc groove 3112 is located on the side of the arc groove 3112 close to the second elastic member 33. The structure of the second guide groove 312 is the same as that of the first guide groove 311, and is symmetrical with the first guide groove 311 about the central axis of the receiving groove 310 along the second direction, and will not be described in detail here. It should be noted that, in the embodiment of the present invention, the first guide slide post 324 of each lock buckle 32 is located on the side of the second guide slide post 325 of the lock buckle 32 away from the buffer cylinder 34, and when the first guide slide post 324 of each lock buckle 32 is located in the arc groove 3112 of the corresponding guide slide groove, the second elastic member 33 connected to a pair of lock buckles 32 at opposite ends is in a stretched state; in addition, when the first guide slide post 324 of any lock buckle 32 is located in the arc groove 3112 of the corresponding guide slide groove, and the lock buckle 32 is triggered by the corresponding trigger block to rotate relative to the end of the buffer cylinder 34, the first guide slide post 324 of the lock buckle 32 can slide from the arc groove 3112 of the corresponding guide slide groove into the strip groove 3111 of the guide slide groove, and then slide along the first direction in the strip groove 3111 together with the second guide slide post 325 of the lock buckle 32.

[0051] Please combine Figures 3 to 6 , Figure 8 as well as Fig. 9 In the embodiment of the present utility model, the buffer cylinder 34 at least includes a cylinder body 341 , a piston rod 342 , a one-way valve 343 , an oil seal 344 and a first elastic member 345 .

[0052] Among them, Figure 3 As shown, the first end of the piston rod 342 ( Figure 3 The right end of the piston rod 342 as shown in FIG. 1 extends into the cylinder body 341 and is installed in the cylinder body 341, and the piston rod 342 can reciprocate along the axial direction of the cylinder body 341 (i.e., the aforementioned first direction). Figure 5 and Figure 8 As shown, the one-way valve 343 is installed at the end of the first end of the piston rod 342 or at the rod body portion of the piston rod 342 adjacent to the first end, so as to be disposed in the cylinder body 341. Figure 5 and Fig. 9 As shown, the oil seal 344 is sealed between the outer wall of the rod portion of the piston rod 342 extending into the cylinder body 341 and the inner wall of the cylinder body 341, wherein the oil seal 344 is closer to the second end of the piston rod 342 than the one-way valve 343 ( Figure 5The left end of the piston rod 342, i.e., the end of the piston rod 342 located outside the cylinder body 341, can reciprocate along the axial direction of the cylinder body 341. Figure 5 and Fig. 9 As shown, the first elastic member 345 is disposed between the oil seal 344 and the cylinder body 341 and is located on the side of the oil seal 344 away from the one-way valve 343. The first elastic member 345 is used to provide a thrust to the oil seal 344 pointing to the one-way valve 343. Figure 3 As shown, the portion of the cylinder body 341 located on the side of the oil seal 344 away from the first elastic member 345 together with the oil seal 344 forms an oil storage chamber 340, and the one-way valve 343 divides the oil storage chamber 340 into a first cavity and a second cavity. The first cavity is located between the oil seal 344 and the one-way valve 343, and the second cavity is located between the one-way valve 343 and the end of the cylinder body 341 away from the oil seal 344.

[0053] Please refer again Figure 5 and Figure 8 In the embodiment of the present utility model, the one-way valve 343 at least includes a valve core 3431 and a valve plate 3432. The valve core 3431 is fixedly sleeved on the outer wall of the first end of the piston rod 342, and a gap is left between the valve core 3431 and the inner wall of the cylinder body 341. The valve core 3431 is provided with a through hole 34311, and the through hole 34311 passes through the valve core 3431 on opposite sides of the cylinder body 341 in the axial direction. Further, the one-way valve 343 and / or the piston rod 342 are provided with a stop structure (for example Figure 8 The valve plate 3432 is provided between the valve core 3431 and the stop structure, and the valve plate 3432 is used to reciprocate between the valve core 3431 and the stop structure along the axial direction of the cylinder body 341 under the action of the fluid thrust to open or block the through hole 34311.

[0054] Specifically, in the embodiment of the present utility model, when the piston rod 342 moves toward the cylinder body 341 along the axial direction of the cylinder body 341, the piston rod 342 will drive the one-way valve 343 to move in the direction from the second end of the piston rod 342 to the first end, so that the oil in the oil storage chamber 340 is forced to flow in the direction from the first end of the piston rod 342 to the second end. Under the fluid thrust of the oil, the valve plate 3432 moves in the direction close to the valve core 3431 until it fits the valve core 3431, thereby blocking the through hole 34311 on the valve core 3431, so that the first cavity and the second cavity of the oil storage chamber 340 are connected only through the gap between the outer wall of the valve core 3431 and the inner wall of the cylinder body 341, and the oil can only flow slowly from the second cavity to the first cavity through the gap, which will generate greater damping; on the contrary, when the piston When the rod 342 moves toward the outside of the cylinder body 341 along the axial direction of the cylinder body 341, the piston rod 342 will drive the one-way valve 343 to move in the direction from the first end of the piston rod 342 to the second end, so that the oil in the oil storage chamber 340 is forced to flow in the direction from the second end of the piston rod 342 to the first end. Under the fluid thrust of the oil, the valve plate 3432 will move in the direction away from the valve core 3431 until it fits the aforementioned stop structure, and then open the through hole 34311 on the valve core 3431, so that the first cavity and the second cavity of the oil storage chamber 340 are connected through the through hole 34311 on the valve core 3431 and the gap between the outer wall of the valve core 3431 and the inner wall of the cylinder body 341, and the oil can simultaneously flow quickly from the second cavity to the first cavity through the through hole 34311 and the gap, and the damping generated at this time is relatively small. In other words, in the embodiment of the present invention, when the piston rod 342 reciprocates along the axial direction of the cylinder body 341, the one-way valve 343 will generate greater damping when the piston rod 342 moves along the axial direction of the cylinder body 341 toward the cylinder body 341, thereby playing a buffering role.

[0055] It should be noted that, in the embodiment of the present utility model, the oil is stored in the oil storage chamber 340 defined by the oil seal 344 and the cylinder body 341. When the piston rod 342 moves along the axial direction of the cylinder body 341, the volume occupied by the piston rod 342 in the oil storage chamber 340 will change, so that the volume of the oil storage chamber 340 used to store the oil will also change, thereby causing the oil pressure in the oil storage chamber 340 to change and there is a force difference between the oil pressure and the thrust of the first elastic member 345. The oil seal 344 will move along the axial direction of the cylinder body 341 under the action of the force difference and the moving direction of the oil seal 344 is opposite to the moving direction of the piston rod 342. Therefore, the volume of the oil storage chamber 340 can be appropriately adjusted according to the change in the volume occupied by the piston rod 342 in the oil storage chamber 340, thereby ensuring that the oil storage chamber 340 has sufficient volume to store the oil. When the oil seal 344 moves along the axial direction of the cylinder body 341, it will generate a force on the first elastic member 345, and the force will cause the first elastic member 345 to perform adaptive elastic deformation along the axial direction of the cylinder body 341. Specifically, when the piston rod 342 drives the one-way valve 343 to move toward the inside of the cylinder body 341 along the direction from the second end of the piston rod 342 to the first end, the oil seal 344 moves along the direction from the first end of the piston rod 342 to the second end and squeezes the first elastic member 345, and the first elastic member 345 is compressed; when the piston rod 342 drives the one-way valve 343 to move toward the outside of the cylinder body 341 along the direction from the first end of the piston rod 342 to the second end, the oil seal 344 moves along the direction from the second end of the piston rod 342 to the first end and releases the first elastic member 345, and the first elastic member 345 is stretched.

[0056] To sum up, in the buffer cylinder 34 provided in the embodiment of the utility model, whether it is the second end of the piston rod 342 (that is, the end of the piston rod 342 located outside the cylinder body 341, that is, one end of the buffer cylinder 34), or the end of the cylinder body 341 away from the piston rod 342 (that is, the other end of the buffer cylinder 34), when subjected to a force along the axial direction of the cylinder body 341 and directed into the cylinder body 341, the piston rod 342 will move toward the cylinder body 341 along the axial direction of the cylinder body 341, and then the valve plate 3432 will move in the direction close to the valve core 3431 under the fluid thrust of the oil until it fits the valve core 3431, so as to block the through hole 34311 on the valve core 3431, so that the oil in the oil storage chamber 340 only flows slowly from the second chamber to the first chamber through the gap between the valve core 3431 and the cylinder body 341, and the one-way valve 343 can generate greater damping, thereby playing a buffering role. That is to say, when either end of the buffer cylinder 34 is subjected to a force along the axial direction of the cylinder body 341 and directed into the cylinder body 341, the one-way valve 343 can generate a large damping to play a buffering role, so that the buffer cylinder 34 has a two-way buffering function. It can be understood that, for the two-way buffer 3 using the buffer cylinder 34 as a damping device, when the first trigger block 1 cooperates with the first lock 321 of the two-way buffer 3 or the second trigger block 2 cooperates with the second lock 322 of the two-way buffer 3, the buffer cylinder 34 can be subjected to a force along the axial direction of the cylinder body 341 and directed into the cylinder body 341, so that the one-way valve 343 generates a large damping to play a buffering role, so that the two-way buffer 3 and the two-way buffer device 100 including the two-way buffer 3 also have a two-way buffering function. When the two-way buffer device 100 is installed on the sliding door of a storage cabinet such as a wardrobe, not only can the two-way buffering of the sliding door be achieved, but the overall structure is simple, the cost is low, and it is easy to install.

[0057] The following will be combined Figures 1 to 10 , the specific structure of the bidirectional buffer device 100 provided in one embodiment of the present utility model is further described in detail.

[0058] Please refer again Figures 1 to 3 In one embodiment of the present invention, the frame 31 is substantially in the shape of a rectangular parallelepiped, and one of the side walls in the second direction is provided with the aforementioned receiving groove 310. Figure 2As shown, the receiving groove 310 can be composed of multiple groove sections along the first direction, and the multiple groove sections include two first groove sections for accommodating a pair of lock buckles 32, a second groove section for accommodating the main part of the buffer cylinder 34 (i.e., the cylinder body 341), and two third groove sections, one of which is used to accommodate part of the piston rod 342, and the other third groove section is used to accommodate part of the connecting rod 347 (described later). Optionally, the dimensions of the multiple groove sections of the receiving groove 310 along the third direction can be the same or different; the dimension of the first groove section for accommodating the lock buckle 32 along the first direction is greater than or equal to the sum of the dimension of the lock buckle 32 along the first direction and the sliding stroke of the lock buckle 32 in the corresponding guide groove along the first direction. The structure of the receiving groove 310 can be reasonably designed according to actual needs, and there is no limitation on this.

[0059] Further, in Figures 1 to 3 In the example, the frame 31 is also provided with a connection structure for fixing the bidirectional buffer 3 on the aforementioned moving part. The connection structure may be, but is not limited to, a combination of one or more of the existing connection structures such as threaded holes and slots, which will not be described in detail. Figures 1 to 3 In the example, the frame 31 adopts an integrated structure. Compared with the existing two-way buffer device which adopts a frame assembled from multiple plates, the frame 31 in this embodiment does not need to be assembled, is simple and reliable, and is easy to install on the aforementioned moving parts. Among them, the frame 31 is not limited to being integrally formed by injection molding, and this will not be repeated.

[0060] Of course, in other embodiments, the frame 31 may also be provided with other structures, such as but not limited to reinforcing ribs for enhancing structural strength, hollow grooves for reducing weight, etc., and this is not limited thereto.

[0061] Please refer again Figures 3 to 7 In one embodiment of the present invention, the first lock buckle 321 includes a lock buckle body 323 that is approximately crescent-shaped, and the lock buckle body 323 is provided with a first guide slide 324 and a second guide slide 325 on opposite sides in the thickness direction (i.e., the aforementioned third direction), and the first guide slide 324 and the second guide slide 325 are respectively located at opposite ends of the lock buckle body 323 in the length direction (i.e., the aforementioned second direction). Figure 3 In the example, the first lock buckle 321 also includes an elastic hook 326 and a pry handle 327 disposed on one side of the lock buckle body 323 in the height direction (i.e., the aforementioned second direction). The pry handle 327 is located at one end of the lock buckle body 323 provided with the second guide column 325. The elastic hook 326 is bent from one end of the lock buckle body 323 provided with the first guide column 324 and extends toward the pry handle 327, and the inner concave side of the elastic hook 326 faces the lock buckle body 323. In addition, in Figure 3In the example, the end of the lock body 323 provided with the second guide column 325 is also provided with a universal joint slot 328 and a spring slot 329, the universal joint slot 328 is located at the end of the lock body 323 corresponding to the area between the pry handle 327 and the second guide slot 312, and the spring slot 329 and the pry handle 327 are respectively located on opposite sides of the lock body 323 in the height direction. Figure 5 As shown, in this embodiment, the spring slot 329 is used to connect the end of the second elastic member 33 close to the first lock buckle 321; the universal joint slot 328 is used to be movably connected with the second end of the piston rod 342 (i.e., the end located outside the cylinder body 341), so that when the first trigger block 1 abuts against the pry handle 327 of the first lock buckle 321 and the first guide slide 324 is located in the corresponding arc groove 3112 of the first guide slide 311, the first lock buckle 321 can rotate relative to the second end of the piston rod 342, thereby allowing the first guide slide 324 to slide from the arc groove 3112 of the first guide slide 311 into the strip groove 3111 of the first guide slide 311. It should be noted that, as Figures 3 to 7 As shown, in one embodiment of the present invention, the structure of the second lock buckle 322 is completely the same as that of the first lock buckle 321 , and the specific structure will not be repeated here.

[0062] exist Figures 3 to 7 In the example, the first lock buckle 321 and the second lock buckle 322 are respectively installed at the opposite ends of the receiving groove 310 of the frame 31 in the first direction. Specifically, the first lock buckle 321 is installed at one end of the receiving groove 310 corresponding to the first guide slide groove 311, and the first guide slide column 324 and the second guide slide column 325 of the first lock buckle 321 on each side of the third direction are respectively installed in the first guide slide groove 311 on the corresponding side of the frame 31 in the third direction; the second lock buckle 322 is installed at one end of the receiving groove 310 corresponding to the second guide slide groove 312, and the first guide slide column 324 and the second guide slide column 325 of the second lock buckle 322 on each side of the third direction are respectively installed in the second guide slide groove 312 on the corresponding side of the frame 31 in the third direction; wherein, the ends of the first lock buckle 321 and the second lock buckle 322 provided with the first guide slide column 324 are separated from each other, and the ends provided with the second guide slide column 325 are close to each other and are limited to slide in the bar groove 3111 of the corresponding guide slide groove.

[0063] Preferably, in the embodiment of the utility model, among the surfaces of the first guide slide post 324 of each lock buckle 32, at least the portion used for sliding contact with the corresponding guide slide groove is a curved surface, so as to facilitate the first guide slide post 324 to slide in the corresponding guide slide groove. Also preferably, among the surfaces of the second guide slide post 325 of each lock buckle 32, at least the portion used for sliding contact with the corresponding guide slide groove is a curved surface, so as to facilitate the second guide slide post 325 to slide in the strip groove 3111 of the corresponding guide slide groove. Specifically, in Figures 3 to 7The second guide slide post 325 is an approximately semi-cylindrical guide slide post, and the surface of the second guide slide post 325 for sliding contact with the two inner wall surfaces of the strip groove 3111 in the second direction is an arc surface, and the second guide slide post 325 has a plane in the circumferential direction, which is opposite to the inner wall surface of the end of the strip groove 3111 away from the arc groove 3112, so that the second guide slide post 325 can abut the inner wall surface of the end when it slides in the strip groove 3111 to the end of the strip groove 3111 away from the arc groove 3112. The second guide slide post 325 abuts against the inner wall surface of the strip groove 3111 in a plane manner, with a large contact area and a good top-stopping effect.

[0064] Of course, in other embodiments, the first guide slide column 324 can also be an approximately semi-cylindrical guide slide column, and the second guide slide column 325 can also be a complete cylindrical guide slide column. As long as the first guide slide column 324 and the second guide slide column 325 can slide in the corresponding guide slide groove, the specific structure of the first guide slide column 324 and the second guide slide column 325 is not limited.

[0065] It should be noted that if Figure 5 As shown, the spring slots 329 of the first lock buckle 321 and the second lock buckle 322 are respectively engaged with the opposite ends of the second elastic member 33, wherein the second elastic member 33 can be but is not limited to an elastic element such as a spring, a rubber band, etc., preferably a spring. Figure 1 As shown, the pry handles 327 of the first lock buckle 321 and the second lock buckle 322 are at least partially extended and exposed on a side surface of the frame 31 away from the second elastic member 33 in the second direction, so as to cooperate with the corresponding trigger block, which will be described in detail later.

[0066] Please refer again Figures 3 to 6 In one embodiment of the present invention, the cylinder body 341 includes a cylinder barrel 3410, a first sealing plug 3411 and a second sealing plug 3412. The cylinder barrel 3410 is a barrel with openings at both axial ends. The first sealing plug 3411 and the second sealing plug 3412 are respectively fixedly installed at the openings at both axial ends of the cylinder barrel 3410, and the first sealing plug 3411 and the second sealing plug 3412 are sealedly connected to the cylinder barrel 3410. Among them, the first sealing plug 3411 is provided with a through hole for the piston rod 342 to pass through. Optionally, as Fig. 9 As shown, in order to improve the convenience of setting the oil seal 344, the inner wall of the cylinder 3410 is provided with an annular step 3415. When the oil seal 344 is set in the cylinder body 341, the side of the oil seal 344 close to the one-way valve 343 abuts against the annular step 3415, indicating that the oil seal 344 is set in place. Figure 5As shown, the cylinder 3410 is provided with a ventilation hole 3413 which passes through the cylinder 3410. The ventilation hole 2413 connects the external space of the cylinder 3410 with the inner cavity of the cylinder 3410 located between the first sealing plug 3411 and the oil seal 344, thereby avoiding that the inner cavity of the cylinder 3410 located between the first sealing plug 3411 and the oil seal 344 constitutes a closed space, thereby reducing the resistance of the oil seal 344 when sliding in the cylinder 3410.

[0067] like Figures 3 to 6 As shown, in one embodiment of the present invention, the second end of the piston rod 342 (i.e., the end located outside the cylinder body 341) is movably connected to the first lock buckle 321 through the first ball head connector 3421. Figures 3 to 6 In the example, the first ball head connector 3421 includes a connecting sleeve and a ball head connected to one end of the connecting sleeve, the connecting sleeve is fixedly sleeved on the second end of the piston rod 342, and the ball head is embedded in the universal joint slot 328 of the first lock buckle 321 (see Figure 7 ), thereby movably connecting the second end of the piston rod 342 to the first lock buckle 321. Of course, the piston rod 342 can also be directly provided with a ball head at the end of the second end, and then embedded in the universal joint slot 328 of the first lock buckle 321 through the ball head, so that the second end of the piston rod 342 can also be movably connected to the first lock buckle 321. It is not difficult to understand that the second end of the piston rod 342 is movably connected to the first lock buckle 321 through the ball head, which not only has good connection mobility, but also facilitates quick disassembly and assembly.

[0068] In other embodiments, the second end of the piston rod 342 can be provided with a column head extending along the third direction, and the first lock buckle 321 is provided with a corresponding column groove, and the column head is installed in the corresponding column groove, so that the second end of the piston rod 342 can be movably connected to the first lock buckle 321.

[0069] It should be noted that, in the embodiment of the present invention, the second end of the piston rod 342 can also be movably connected to the first lock buckle 321 by other connection methods. As long as it can be ensured that when the pry handle 327 of the first lock buckle 321 is triggered by the corresponding first trigger block 1, the first lock buckle 321 can be rotated relative to the end of the second end of the piston rod 342 to make the first guide slide column 324 of the first lock buckle 321 slide from the corresponding arc groove 3112 of the guide groove into the strip groove 3111 of the guide groove. No further details are given on this.

[0070] like Figures 3 to 6As shown, in one embodiment of the present invention, the buffer oil cylinder 34 includes a connecting rod 347 connected to one end of the cylinder body 341 away from the piston rod 342, the connecting rod 347 extends along the axial direction of the cylinder body 341, and the axis of the connecting rod 347 coincides with the axis of the piston rod 342. It is not difficult to understand that when the second end of the piston rod 342 or the end of the connecting rod 347 away from the piston rod 342 is subjected to force, that is, the buffer oil cylinder 34 is subjected to a force along the axial direction of the cylinder body 341 and directed into the cylinder body 341, as described above, the piston rod 342 can move along the axial direction of the cylinder body 341, so that the one-way valve 343 generates greater damping when the piston rod 342 moves along the axial direction of the cylinder body 341 toward the cylinder body 341, thereby playing a buffering role.

[0071] exist Figures 3 to 6 In the example, any of the above-mentioned methods of movably connecting the piston rod 342 to the first lock buckle 321 can be used to movably connect the end of the connecting rod 347 away from the piston rod 342 to the second lock buckle 322, which will not be described in detail. Preferably, the end of the connecting rod 347 away from the piston rod 342 is movably connected to the second lock buckle 322 through the second ball head connector 3472, so that the connection between the connecting rod 347 and the second lock buckle 322 is flexible and easy to quickly disassemble and assemble.

[0072] Please combine Figure 5 and Figure 8 In one embodiment of the present utility model, the one-way valve 343 further includes a valve plug 3433, and the valve plug 3433 includes a plug seat 34331 and a plug column 34332 protruding from one side of the plug seat 34331. In this embodiment, the plug column 34332 is connected to the valve core 3431 and / or the piston rod 342 to fix the valve plug 3433, and the valve plug 3433 is provided with the aforementioned stopper structure.

[0073] Specifically, in Figure 5 and Figure 8 In the example, the valve core 3431 is an annular valve core with mounting holes extending through both ends along the axial direction and an axial cross section that is roughly in the shape of a "convex" character. The valve core 3431 is fixedly sleeved on the end of the first end of the piston rod 342, and a plug hole is formed between the valve core 3431 and the end of the first end of the piston rod 342, and the end of the plug 34332 away from the plug seat 34331 is inserted into the plug hole, thereby fixing the valve plug 3433 to the valve core 3431. In other embodiments, the valve plug 3433 may also be plugged with the first end of the piston rod 342, or may be fixedly connected to the valve core 3431 and / or the first end of the piston rod 342 by threaded connection, which is not limited thereto.

[0074] exist Figure 5 and Figure 8In the example, the valve disc 3432 is movably sleeved on the plug 34332, so that it can move along the axial direction of the plug 34332 (that is, the axial direction of the cylinder 341) under the action of the fluid thrust of the oil. In this embodiment, along the radial direction of the cylinder 341, the size of the plug 34332 is smaller than the size of the plug seat 34331, and the portion of the plug seat 34331 that exceeds the plug 34332 in the radial direction of the cylinder 341 (that is, the edge portion of the plug seat 34331) constitutes the aforementioned stop structure. In this way, when the valve disc 3432 is subjected to the fluid thrust of the oil, the valve disc 3432 can move between the valve core 3431 and the stop structure along the axial direction of the plug 34332. Among them, the plug seat 34331 is not limited to adopting a round cake-shaped structure or a boss-shaped structure, as long as the size of the plug seat 34331 along the radial direction of the cylinder 341 is larger than the size of the plug 34332 along the radial direction of the cylinder 341, there is no limitation on this.

[0075] Further, please combine Figure 8 and Fig.10 In one embodiment of the present invention, the valve core 3431 is provided with at least two through holes 34311, and the at least two through holes 34311 are spaced apart along the circumference of the valve core 3431. It can be understood that the valve core 3431 is provided with at least two through holes 34311, which can increase the oil flow rate between the first cavity and the second cavity of the aforementioned oil storage cavity 340 when the through holes 34311 are opened. Figure 8 and Fig.10 As shown, in this embodiment, a connecting rib 34312 is formed between every two adjacent through holes 34311, and the surface of the connecting rib 34312 facing the valve plate 3432 is closer to the oil seal 344 than the surface of the other parts of the valve core 3431 except the connecting rib 34312 facing the valve plate 3432, and a depression is formed between the connecting rib 34312 and the other parts of the valve core 3431 except the connecting rib 34312. It is easy to understand that by forming a depression at the connecting rib 34312 of the valve core 3431, the sealing performance of the valve plate 3432 when blocking the through hole 34311 can be improved.

[0076] Please combine Figure 5 and Fig. 9In one embodiment of the present utility model, the buffer oil cylinder 34 further includes a stopper 346, which is movably sleeved on the outer wall of the rod portion of the piston rod 342 extending into the cylinder body 341 and is located on the side of the oil seal 344 away from the one-way valve 343, and one end of the first elastic member 345 close to the oil seal 344 abuts against the stopper 346. The stopper 346 is connected to the oil seal 344 and has a bearing surface 3460 facing the oil seal 344, and the bearing surface 3460 abuts against the side of the oil seal 344 away from the one-way valve 343. In this embodiment, by adding the stopper 346 with the bearing surface 3460 and abutting against the side of the oil seal 344 away from the one-way valve 343 through the bearing surface 3460, it is possible to avoid excessive elastic deformation of the oil seal 344 when it moves along the axial direction of the cylinder body 341, thereby ensuring the sealing effect of the oil seal 344.

[0077] Specifically, in Figure 5 and Fig. 9 In the example, the stopper 346 includes a bearing portion 3461 and a column portion 3462, wherein the column portion 3462 is convexly arranged on the side of the bearing portion 3461 away from the oil seal 344, and the oil seal 344 is connected to the side of the bearing portion 3461 away from the column portion 3462. Among them, a bearing surface 3460 is provided on the side of the bearing portion 3461 facing the oil seal 344, and an abutting surface 3463 not blocked by the column portion 3462 is provided on the side of the bearing portion 3461 facing away from the oil seal 344. One end of the first elastic member 345 close to the oil seal 344 is sleeved on the outer wall of the column portion 3462 and abuts against the abutting surface 3463, so that the connection stability between the first elastic member 345 and the stopper 346 can also be enhanced, thereby ensuring that the first elastic member 345 can provide the oil seal 344 with a stable thrust directed to the one-way valve 343.

[0078] Optionally, in Figure 5 and Fig. 9 In the example, the bearing part 3461 is provided with a first positioning structure, and the first positioning structure is located on the side of the bearing part 3461 away from the column part 3462. Correspondingly, the side of the oil seal 344 away from the one-way valve 343 is provided with a second positioning structure, and the second positioning structure is adapted to the first positioning structure to position and install the oil seal 344 on the bearing part 3461. Among them, the first positioning structure is a positioning flange 3464 formed on the side of the bearing part 3461 away from the column part 3462, and the second positioning structure is a positioning groove 3441 opened on the side of the oil seal 344 facing the stopper 346, and the positioning flange 3464 is inserted into the positioning groove 3441, so as to position and install the oil seal 344 on the bearing part 3461. It can be understood that in other embodiments, the first positioning structure and the second positioning structure can also be a combination of other positioning structures, such as but not limited to the combination of positioning holes and positioning columns, which is not limited to this.

[0079] Please refer again Figure 3 and Figure 5 In one embodiment of the present invention, the bidirectional buffer 3 further includes a protective tube 35 fixedly mounted on the frame 31, and the protective tube 35 is sleeved on the outside of the buffer cylinder 34. Among them, at least two ends of the buffer cylinder 34 for connecting a pair of lock buckles 32 are always located outside the protective tube 35, that is, at least part of the buffer cylinder 34 is located in the protective tube 35. In this embodiment, by sleeved on the outside of the buffer cylinder 34, when the end of the buffer cylinder 34 away from the piston rod 342 is subjected to a force along the axial direction of the cylinder body 341 and pointing to the inside of the cylinder body 341, the buffer cylinder 34 at least partially slides within the limit of the protective tube 35, which can ensure that the force (such as the huge impact force when the sliding door is closed) is large, and the buffer cylinder 34 is not easy to break when realizing the buffering function. Among them, the protective tube 35 can be fixed to the frame 31 by, but not limited to, a snap connection, a threaded connection, etc., which is not limited to this.

[0080] Preferably, Figure 3 and Figure 5 In the example, the bidirectional buffer 3 further includes a first pipe plug 36, which is disposed at the pipe opening of the end of the protection tube 35 close to the piston rod 342, and the first pipe plug 36 has a first through hole for the piston rod 342 to pass through; and / or, the bidirectional buffer 3 further includes a second pipe plug, which is disposed at the pipe opening of the end of the protection tube 35 away from the piston rod 342, and the second pipe plug has a second through hole for the end of the buffer cylinder 34 away from the piston rod 342 (i.e., the end of the connecting rod 347) to pass through. It can be understood that by arranging the first pipe plug 36 and / or the second pipe plug at the end pipe opening of the protection tube 35, a sealing effect can be achieved to prevent dust and other debris from entering the protection tube 35.

[0081] The following will be combined Figures 11 to 16 , taking the application of the bidirectional buffer device 100 in a wardrobe as an example, the use principle of the bidirectional buffer device 100 provided in one embodiment of the utility model is described in detail.

[0082] like Fig.11 and Fig.12 As shown, in the initial state, the sliding door of the wardrobe (not shown in the figure) is in the middle position of the wardrobe body 200. At this time, the first guide slide column 324 of the lock buckle 32 at each end of the bidirectional buffer device 100 in the first direction falls into the arc groove 3112 of the corresponding guide slide groove, and the second elastic member 33 (spring) is in a stretched and force-storing state.

[0083] like Fig.13As shown, when the sliding door and the two-way buffer 3 move to the left relative to the cabinet 200, the pry handle 327 of the first lock buckle 321 touches the first trigger block 1. Under the action of the first trigger block 1, the first lock buckle 321 rotates in the clockwise direction as shown in the figure relative to the end of the piston rod 342, so that the first guide slide column 324 of the first lock buckle 321 slides from the arc groove 3112 of the first guide groove 311 into the strip groove 3111 of the first guide groove 311. At this time, the elastic hook 326 of the first lock buckle 321 is engaged with the first trigger block 1, that is, the first lock buckle 321 does not move relative to the cabinet 200. It can be understood that the sliding door and the two-way buffer 3 will automatically close to the left under the pulling force of the second elastic member 33. It should be noted that, in the process of the sliding door closing to the left, the piston rod 342 and the one-way valve 343 move to the right relative to the cylinder body 341, and the oil is forced to move to the left, so that the valve plate 3432 of the one-way valve 343 moves to the left under the drive of the oil, thereby blocking the through hole 34311 of the valve core 3431, and the oil can only flow through the gap between the valve core 3431 and the cylinder body 341, thereby generating a large damping, playing a buffering role, and making the sliding door close slowly. Furthermore, since the piston rod 342 moves to the right relative to the cylinder body 341, it will occupy the volume between the second cavity of the oil storage cavity 340, so the oil seal 344 moves to the left relative to the cylinder body 341 to adjust and increase the volume occupied by the piston rod 342.

[0084] like Fig.14 As shown, when the sliding door 326 is opened to the right together with the two-way buffer 3 after being closed to the left, since the elastic hook 326 of the first lock buckle 321 is engaged with the first trigger block 1, that is, the first lock buckle 321 is stationary relative to the cabinet 200, the first lock buckle 321 rotates in the counterclockwise direction as shown in the figure relative to the end of the piston rod 342, so that the first guide slide column 324 of the first lock buckle 321 slides from the strip groove 3111 of the first guide groove 311 into the arc groove 3112 of the first guide groove 311, and the elastic hook 326 of the first lock buckle 321 disengages from the first trigger block 1, and the two-way buffer 3 moves away from the first trigger block 1, so that the second elastic member 33 is stretched to complete the force storage. It should be noted that during this process, the piston rod 342 and the one-way valve 343 move to the left relative to the cylinder body 341, and the oil is forced to move to the right. The valve plate 3432 moves to the right driven by the oil, so that the through hole 34311 of the valve core 3431 is opened, and the oil can quickly flow through the through hole 34311 of the valve core 3431 and the gap between the valve core 3431 and the cylinder body 341. At this time, the damping is very small, and the sliding door can be opened to the right relatively easily until it returns to the Fig.11In the initial state shown, the sliding door and the two-way buffer 3 are in the middle of the cabinet 200. In the above process, since the piston rod 342 moves to the left relative to the cylinder 341, the piston rod 342 withdraws from the volume between the second cavity of the oil storage cavity 340, so the oil seal 344 moves to the right relative to the cylinder 341 to adjust and reduce the corresponding volume.

[0085] like Fig.15 As shown, when the sliding door and the two-way buffer 3 move to the right relative to the cabinet body 200, the pry handle 327 of the second lock buckle 322 touches the second trigger block 2. Under the action of the first trigger block 1, the second lock buckle 322 rotates counterclockwise as shown in the figure relative to the end of the connecting rod 347, so that the first guide slide column 324 of the second lock buckle 322 slides from the arc groove 3112 of the second guide groove 312 into the strip groove 3111 of the second guide groove 312. At this time, the elastic hook 326 of the second lock buckle 322 is engaged with the second trigger block 2, that is, the second lock buckle 322 is immovable relative to the cabinet body 200. It can be understood that the sliding door and the two-way buffer 3 will automatically close to the right under the pulling force of the second elastic member 33. It should be noted that in the process of closing the sliding door to the right, the piston rod 342 and the one-way valve 343 are fixed relative to the cylinder body 341, the protective tube 35 is fixed on the frame 31, and the connecting rod 347 on the right side of the buffer cylinder 34 is fixed to the cylinder 3410 through the second sealing plug 3412, so that they slide to the left in the protective tube 35 relative to the piston rod 342 and the one-way valve 343, and the oil is forced to move to the left relative to the one-way valve 343. The valve plate 3432 moves to the left driven by the oil, and the through hole 34311 of the valve core 3431 is blocked. The oil can only flow through the gap between the valve core 3431 and the cylinder body 341, at this time, a larger damping is generated, thereby playing a buffering role, so that the sliding door closes slowly. Similarly, since the piston rod 342 moves rightward relative to the cylinder body 341 , it will occupy the volume between the second cavities of the oil storage chamber 340 , so the oil seal 344 moves leftward relative to the cylinder body 341 to adjust and increase the volume occupied by the piston rod 342 .

[0086] like Fig.16As shown, when the sliding door 326 is opened to the left together with the two-way buffer 3 after being closed to the right, since the elastic hook 326 of the second lock buckle 322 is engaged with the second trigger block 2, that is, the second lock buckle 322 is stationary relative to the cabinet 200, the second lock buckle 322 rotates in the clockwise direction as shown in the figure relative to the end of the connecting rod 347, so that the first guide slide column 324 of the second lock buckle 322 slides from the strip groove 3111 of the second guide groove 312 into the arc groove 3112 of the second guide groove 312, and the elastic hook 326 of the second lock buckle 322 is disengaged from the second trigger block 2, and the two-way buffer 3 is away from the second trigger block 2, so that the second elastic member 33 is stretched to complete the force storage. It should be noted that, during this process, the connecting rod 347 slides to the right in the protection tube 35 together with the cylinder 3410 via the second sealing plug 3412 relative to the piston rod 342 and the one-way valve 343, and the oil is forced to move to the right relative to the one-way valve 343. The valve plate 3432 moves to the right driven by the oil, so that the through hole 34311 of the valve core 3431 is opened, and the oil can quickly flow through the through hole 34311 of the valve core 3431 and the gap between the valve core 3431 and the cylinder body 341. At this time, the damping is very small, and the sliding door can be opened to the left relatively easily until it returns to the left. Fig.11 In the initial state shown, the sliding door and the two-way buffer 3 are in the middle of the cabinet 200. In the above process, since the piston rod 342 moves to the left relative to the cylinder 341, the piston rod 342 withdraws from the volume between the second cavity of the oil storage cavity 340, so the oil seal 344 moves to the right relative to the cylinder 341 to adjust and reduce the corresponding volume.

[0087] Furthermore, an embodiment of the utility model also provides a storage cabinet, such as but not limited to a wardrobe. The storage cabinet includes a cabinet body, a sliding door, and a bidirectional buffer device. The bidirectional buffer device can adopt the bidirectional buffer device 100 in any of the above embodiments, so it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0088] It can be understood that in the storage cabinet provided in the embodiment of the utility model, the cabinet body is a base component for installing the first trigger block 1 and the second trigger block 2, the first trigger block 1 is installed in the corner area of ​​the top or bottom end of the cabinet body, the second trigger block 2 is installed in a certain area between the two corners at the same end of the cabinet body, and the two-way buffer 3 is installed on the side corresponding to the first trigger block 1 at the top or bottom end of the sliding door. In this way, when the sliding door slides left and right on the cabinet body, the first lock buckle 321 and the second lock buckle 322 of the two-way buffer 3 can cooperate with the first trigger block 1 and the second trigger block 2 respectively, so that the sliding door of the storage cabinet has the functions of two-way buffering and automatic closing. For more detailed working principles and usage processes, please refer to the aforementioned related content, which will not be repeated here.

[0089] It can also be understood that the bidirectional buffer device 100 provided in the embodiment of the utility model can also be applied to household products such as floor-to-ceiling doors, floor-to-ceiling windows or drawers that have reciprocating movable parts to achieve the bidirectional buffering function of the movable parts. Its specific working principle and usage process can also be found in the aforementioned related content, which will not be repeated here.

[0090] In the description of the present invention, the description with reference to the terms "embodiment", "specific embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0091] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A buffer cylinder, characterized in that: include: Cylinder body; A piston rod, a first end of which extends into the cylinder body and is installed in the cylinder body, and the piston rod can reciprocate along the axial direction of the cylinder body; A one-way valve is disposed in the cylinder; An oil seal is sealingly sleeved between the outer wall of the rod portion of the piston rod extending into the cylinder body and the inner wall of the cylinder body, the oil seal is closer to the second end of the piston rod than the one-way valve, and can reciprocate along the axial direction of the cylinder body; a first elastic member, disposed between the oil seal and the cylinder body and located at a side of the oil seal away from the one-way valve, the first elastic member being used to provide a thrust to the oil seal directed toward the one-way valve; In which, the one-way valve includes a valve core and a valve plate, the valve core is fixedly sleeved on the outer wall of the first end of the piston rod and has a gap with the inner wall of the cylinder body, the valve core is provided with a through hole, the through hole passes through the valve core on opposite sides of the axial direction of the cylinder body, the one-way valve and / or the piston rod are provided with a stop structure, the valve plate is arranged between the valve core and the stop structure, and the valve plate is used to reciprocate between the valve core and the stop structure along the axial direction of the cylinder body under the action of fluid thrust to open or block the through hole.

2. The buffer cylinder according to claim 1, characterized in that: The one-way valve further comprises a valve plug, the valve plug comprises a plug seat and a plug column, the plug column is convexly arranged on one side of the plug seat, and the plug column is connected to the valve core and / or the piston rod; Wherein, along the radial direction of the cylinder body, the size of the plug is smaller than the size of the plug seat, the valve plate is movably sleeved on the plug, and the portion of the plug seat that exceeds the plug in the radial direction of the cylinder body constitutes the stop structure.

3. The buffer cylinder according to claim 2, characterized in that: The valve core is sleeved on the end of the first end of the piston rod, and a plug hole is formed between the valve core and the end of the first end of the piston rod, and the end of the plug column away from the plug seat is inserted into the plug hole.

4. The buffer cylinder according to claim 1, characterized in that: The buffer oil cylinder further comprises a stopper, which is movably sleeved on the outer wall of the rod body portion of the piston rod extending into the cylinder body and is located on a side of the oil seal away from the one-way valve, and one end of the first elastic member close to the oil seal abuts against the stopper; Wherein, the stopper is connected to the oil seal and has a bearing surface facing the oil seal, and the bearing surface abuts against a side of the oil seal away from the one-way valve.

5. The buffer cylinder according to claim 4, characterized in that: The stopper includes a bearing portion and a column portion, wherein the column portion is protrudingly arranged on a side of the bearing portion away from the oil seal, and the oil seal is connected to a side of the bearing portion away from the column portion; The bearing surface is provided on the side of the bearing portion facing the oil seal, and the abutment surface not blocked by the column portion is provided on the side of the bearing portion facing away from the oil seal, and one end of the first elastic member close to the oil seal is sleeved on the outer wall of the column portion and abuts against the abutment surface.

6. The buffer cylinder according to claim 5, characterized in that: The bearing portion is provided with a first positioning structure, and the first positioning structure is located at a side of the bearing portion away from the column portion; A second positioning structure is provided on a side of the oil seal away from the one-way valve, and the second positioning structure is matched with the first positioning structure to position and install the oil seal on the bearing portion.

7. The buffer cylinder according to claim 1, characterized in that: The valve core is provided with at least two through holes, the at least two through holes are spaced apart along the circumference of the valve core, and a connecting rib is formed between every two adjacent through holes; Among them, the surface of the connecting rib facing the valve plate is closer to the oil seal than the surface of the other parts of the valve core except the connecting rib facing the valve plate, and a recess is formed between the connecting rib and the rest of the valve core except the connecting rib.

8. The buffer cylinder according to any one of claims 1 to 7, characterized in that: The buffer cylinder also includes a connecting rod connected to an end of the cylinder body away from the piston rod, the axis of the connecting rod coincides with the axis of the piston rod, and when the second end of the piston rod or the end of the connecting rod away from the piston rod is subjected to force, the piston rod moves axially along the cylinder body.

9. A bidirectional buffer, characterized in that: The invention comprises a frame, a pair of lock buckles, a second elastic member and a buffer oil cylinder according to any one of claims 1 to 8, wherein the pair of lock buckles, the second elastic member and the buffer oil cylinder are all accommodated in the frame, the pair of lock buckles are respectively movably connected to opposite ends of the buffer oil cylinder in a first direction, the second elastic member and the buffer oil cylinder are arranged side by side along a second direction, and opposite ends of the second elastic member are respectively connected to the pair of lock buckles; The pair of locks are movably connected to opposite ends of the frame in the first direction, respectively, and each of the locks can move relative to a corresponding end of the frame to drive the piston rod to reciprocate along the axial direction of the cylinder body.

10. The bidirectional buffer according to claim 9, wherein: Each of the lock buckles is provided with a first guide slide post and a second guide slide post spaced along the first direction on at least one side of the third direction, and the portion of the frame corresponding to each lock buckle is provided with a guide slide groove on at least one side of the third direction, and the first guide slide post and the second guide slide post of each of the lock buckles are slidably installed in the corresponding guide slide groove, and the guide slide groove includes a strip groove and an arc groove smoothly connected to an end of the strip groove away from the buffer oil cylinder, the strip groove extends along the first direction, the arc groove is located on a side of the strip groove close to the second elastic member and extends in a direction away from the second elastic member, and the curvature center of the arc groove is located on a side of the arc groove close to the second elastic member, the first direction, the second direction and the third direction are perpendicular to each other, and the first direction is the same as the axial direction of the cylinder body; Wherein, the first guide slide post is located at a side of the second guide slide post of the lock buckle away from the buffer oil cylinder, and when the first guide slide post of each lock buckle is located in the arc groove of the corresponding guide slide groove, the second elastic member is in a stretched state.

11. The bidirectional buffer according to claim 9, wherein: It also includes a protection tube fixedly mounted on the frame, wherein the protection tube is sleeved on the outside of the buffer cylinder; Wherein, at least two ends of the buffer oil cylinder for connecting the pair of lock buckles are always located outside the protection tube.

12. The bidirectional buffer according to claim 11, wherein: It also includes a first pipe plug, which is arranged at the pipe opening of one end of the protection tube close to the piston rod, and the first pipe plug is provided with a first through hole for the piston rod to pass through; And / or, it also includes a second pipe plug, which is arranged at the pipe mouth of the end of the protection tube away from the piston rod, and the second pipe plug has a second through hole for the end of the buffer cylinder away from the piston rod to pass through.

13. The bidirectional buffer according to any one of claims 9 to 12, characterized in that: The buffer oil cylinder further comprises a connecting rod connected to the cylinder body and away from the first end of the piston rod, wherein the axis of the connecting rod coincides with the axis of the piston rod; The second end of the piston rod is movably connected to one of the pair of lock buckles, and the end of the connecting rod away from the piston rod is movably connected to the other lock buckle of the pair of lock buckles.

14. The bidirectional buffer according to any one of claims 9 to 12, characterized in that: The frame adopts an integral structure.

15. A bidirectional buffer device, characterized in that: comprising a pair of trigger blocks and a bidirectional buffer as claimed in any one of claims 9 to 14; Among them, each of the trigger blocks is used to be fixedly installed on a base component, the bidirectional buffer is used to be fixedly installed on a moving component, the moving component is slidably installed on the base component, and the bidirectional buffer can follow the moving component to perform linear reciprocating motion relative to the base component. The pair of trigger blocks and the bidirectional buffer are distributed at intervals along the movement direction of the moving component. The pair of trigger blocks are respectively located on opposite sides of the bidirectional buffer, and are respectively used to cooperate with the pair of locks.

16. A locker, characterized in that: It comprises a cabinet body, a sliding door and the bidirectional buffer device according to claim 15, wherein the cabinet body is the base component and the sliding door is the moving component.

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