A buffer component and a hydraulic support rod

Abstract

The present invention relates to the technical field of hydraulic support rods, and specifically relates to a buffer assembly and a hydraulic support rod. The buffer assembly includes a piston tube, a piston, a piston rod, a first-stage adapter seat, a second-stage adapter seat, a return spring, and a limiting member. The piston tube is of a circular tube structure, and an installation seat is integrally formed at the front end of the piston tube, and a threaded hole is provided on the installation seat; by providing a buffer assembly composed of a combination of a piston tube, a piston, a piston rod, a first-stage adapter seat, a second-stage adapter seat, a return spring, and a limiting member, and by installing a baffle and an adapter on the installation seat at the end of the piston tube, and by providing a first-stage air groove on the baffle, and by providing a second-stage air groove on the connecting plate, and by providing a current-limiting plate in the inner cavity of the piston tube, and by providing a third-stage air groove on the current-limiting plate, the first-stage air groove and the third-stage air groove play a role in current limiting, thereby effectively controlling the rebound rate of the piston rod, and when air enters the piston tube, the current-limiting plate retracts, thus not affecting its air intake efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field related to hydraulic support rods, and in particular to a buffer component and a hydraulic support rod. Background Art

[0002] The literal meaning of buffering is to slow down the impact force. At present, in order to prevent a large impact when doors and windows are closed, buffers are usually installed to unload the closing impact force of the door body;

[0003] However, the traditional buffer structure is relatively simple, and it mainly achieves buffering effect through the intake and exhaust of the air cavity, but it will greatly increase the resistance when opening the door, and if the resistance is reduced, it will affect the buffering effect when the door and window are closed. For this reason, the present invention proposes a buffer assembly and a hydraulic support rod to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a buffer assembly and a hydraulic support rod to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a buffer component, the buffer component comprising:

[0006] The piston tube is a round tube structure, and a mounting seat is integrally formed at the front end of the piston tube, a threaded hole is provided on the mounting seat, and a baffle and an adapter are installed at the port position of the mounting seat, and a guide rod seat is connected to the front end side wall of the inner cavity of the piston tube through a connecting rod, and a guide rod hole is provided on the guide rod seat;

[0007] A piston, the piston being movably disposed in the inner cavity of the piston tube;

[0008] A piston rod, the piston rod is fixedly connected to the piston, and a secondary adapter is integrally formed at the rear end of the piston rod;

[0009] A primary adapter seat, the primary adapter seat is rotatably connected to the adapter;

[0010] A secondary adapter seat, the secondary adapter seat is rotatably connected to the secondary adapter at the end of the piston rod;

[0011] A return spring, wherein the return spring is sleeved on the piston rod;

[0012] A limiting member is installed at the rear end of the piston tube.

[0013] Preferably, a piston rod hole is provided on the limit member, the piston rod passes through the piston rod hole, and air holes are provided on the limit member, the air holes are evenly arranged in a circle, and an internal thread structure is provided on the inner side wall of the limit member, and the limit member is threadedly connected to the rear end of the piston tube.

[0014] Preferably, a first-stage mounting hole and a first-stage air groove are formed in the baffle plate.

[0015] Preferably, the adapter is composed of a connecting plate and a first-stage adapter. The connecting plate and the first-stage adapter are integrally formed. The first-stage adapter is rotatably connected to the first-stage adapter seat. A second-stage mounting hole and a second-stage air groove are formed in the connecting plate. The first-stage mounting hole and the second-stage mounting hole are correspondingly arranged with the threaded hole. The connecting plate and the baffle plate are both fixedly mounted on the mounting seat through positioning screws.

[0016] Preferably, a current-limiting plate is arranged in the inner cavity of the piston tube. A third-stage air groove is formed in the current-limiting plate. A guide rod is integrally formed on the current-limiting plate. The guide rod is movably arranged in the guide rod hole on the guide rod seat. The guide rod is a rod body structure with a regular hexagon cross-section. The size of the guide rod hole matches the size of the guide rod. A support spring is sleeved on the guide rod. When the support spring is in the reset state, the baffle plate and the current-limiting plate are in contact with each other.

[0017] Preferably, a set of the third-stage air groove and the first-stage air groove are symmetrically arranged. Both the third-stage air groove and the first-stage air groove are arc-shaped notch. The sizes of the third-stage air groove and the first-stage air groove match. The third-stage air groove and the first-stage air groove are arranged at a 90-degree angle. There is an overlapping area between the third-stage air groove and the first-stage air groove. The overlapping area between the two is one-tenth of the cross-sectional size of the first-stage air groove.

[0018] Preferably, the second-stage air groove is a straight notch. The projection of the first-stage air groove on the connecting plate is completely within the coverage of the second-stage air groove. Dust-proof gauze meshes are embedded in both the second-stage air groove and the air hole.

[0019] Preferably, a ball groove is formed on the side wall of the current-limiting plate. Two circles of ball grooves are evenly arranged. Ball bearings are embedded in the ball grooves. The ball bearings are in contact with the inner cavity side wall of the piston tube. A first-stage rubber plate is adhesively bonded to the rear side of the baffle plate. A second-stage rubber plate is adhesively bonded to the front side of the current-limiting plate.

[0020] Preferably, a piston limiting ring is integrally formed on the inner cavity side wall of the piston tube. When the piston abuts against the piston limiting ring, the guide rod and the piston are not in contact with each other.

[0021] A hydraulic support rod, the hydraulic support rod has the above-mentioned buffer assembly.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. By setting up a buffer assembly composed of a piston tube, a piston, a piston rod, a first-stage adapter seat, a second-stage adapter seat, a return spring and a limiting member, and by installing a baffle and an adapter on the mounting seat at the end of the piston tube, by opening a first-stage air groove on the baffle, by opening a second-stage air groove on the connecting plate, by arranging a current-limiting plate in the inner cavity of the piston tube, and by opening a third-stage air groove on the current-limiting plate, the first-stage air groove and the third-stage air groove play a role in current-limiting, thus effectively controlling the rebound rate of the piston rod, and when air enters the piston tube, the current-limiting plate retracts inward, thus not affecting its air intake efficiency;

[0024] 2. A ball groove is opened on the side wall of the current-limiting plate, and balls are embedded and installed in the ball groove, so that through the guiding action of the balls, the flexibility of the current-limiting plate during movement can be effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the present invention;

[0026] Figure 2 is a half-sectional view of the present invention;

[0027] Figure 3 is Figure 2 an enlarged schematic view of the structure at A in

[0028] Figure 4 is a schematic structural diagram of the baffle of the present invention;

[0029] Figure 5 is a schematic structural diagram of the adapter of the present invention;

[0030] Figure 6 is a schematic structural diagram of the current-limiting plate of the present invention;

[0031] Figure 7 is a schematic structural diagram of the limiting member of the present invention.

[0032] In the figure: piston tube 1, piston 2, piston rod 3, first-stage adapter seat 4, second-stage adapter seat 5, return spring 6, limiting member 7, mounting seat 8, threaded hole 9, baffle 10, adapter 11, connecting rod 12, guide rod seat 13, current-limiting plate 14, support spring 15, piston limiting ring 16, first-stage mounting hole 17, first-stage air groove 18, connecting plate 19, first-stage adapter 20, second-stage mounting hole 21, second-stage air groove 22, guide rod 23, third-stage air groove 24, piston rod hole 25, air hole 26, ball 27, first-stage rubber plate 28, second-stage rubber plate 29, second-stage adapter 30. DETAILED DESCRIPTION OF THE INVENTION

[0033] In order to clearly and completely describe the objectives and technical solutions of the present invention and make its advantages more clearly understood, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, of the embodiments of the present invention, and are only used to explain the embodiments of the present invention, rather than to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] For the sake of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are set forth to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures are not described in detail to avoid unnecessarily obscuring these embodiments. Additionally, all embodiments can be used in combination with each other.

[0037] Please refer to Figure 1-7 , the present invention provides embodiments of the following three preferred solutions:

[0038] Embodiment 1

[0039] A buffer component, which includes a piston tube 1, a piston 2, a piston rod 3, a first-stage adapter seat 4, a second-stage adapter seat 5, a return spring 6 and a limiting member 7. The piston tube 1 is of a circular tube structure, and an installation seat 8 is integrally formed at the front side end of the piston tube 1. A threaded hole 9 is provided on the installation seat 8, and a baffle 10 and an adapter 11 are installed at the port position of the installation seat 8. A guide rod seat 13 is connected to the inner wall of the front end of the inner cavity of the piston tube 1 through a connecting rod 12. A guide rod hole is provided on the guide rod seat 13. The piston 2 is movably arranged in the inner cavity of the piston tube 1. The piston rod 3 is fixedly connected to the piston 2. A second-stage adapter 30 is integrally formed at the rear side end of the piston rod 3. The first-stage adapter seat 4 is rotatably connected to the adapter 11. The second-stage adapter seat 5 is rotatably connected to the second-stage adapter 30 at the end of the piston rod 3. The return spring 6 is sleeved on the piston rod 3. The limiting member 7 is installed at the rear side end of the piston tube 1.

[0040] A piston rod hole 25 is provided on the limiting member 7. The piston rod 3 passes through the piston rod hole 25. An air hole 26 is provided on the limiting member 7. The air holes 26 are evenly arranged in a circle. An internal thread structure is provided on the inner side wall of the limiting member 7. The limiting member 7 is threadedly connected to the rear side end of the piston tube 1.

[0041] A first-stage installation hole 17 and a first-stage air groove 18 are provided on the baffle 10.

[0042] The adapter 11 is composed of a connecting plate 19 and a first-stage adapter 20. The connecting plate 19 and the first-stage adapter 20 are integrally formed. The first-stage adapter 20 is rotatably connected to the first-stage adapter seat 4. A second-stage installation hole 21 and a second-stage air groove 22 are provided on the connecting plate 19. The first-stage installation hole 17 and the second-stage installation hole 21 are correspondingly arranged with the threaded hole 9. The connecting plate 19 and the baffle 10 are both positioned and installed on the installation seat 8 through positioning screws.

[0043] A flow limiting plate 14 is arranged in the inner cavity of the piston tube 1. A third-stage air groove 24 is provided on the flow limiting plate 14. A guide rod 23 is integrally formed on the flow limiting plate 14. The guide rod 23 is movably arranged in the guide rod hole on the guide rod seat 13. The guide rod 23 is a rod body structure with a regular hexagon cross-section. The size of the guide rod hole matches the size of the guide rod 23. A support spring 15 is sleeved on the guide rod 23. When the support spring 15 is in a reset state, the baffle 10 and the flow limiting plate 14 are in contact with each other.

[0044] A group of third-stage air grooves 24 and first-stage air grooves 18 are symmetrically arranged. Both the third-stage air grooves 24 and the first-stage air grooves 18 are arc-shaped notches. The sizes of the third-stage air grooves 24 and the first-stage air grooves 18 match. The third-stage air grooves 24 and the first-stage air grooves 18 are arranged at a 90-degree angle. There is an overlapping area between the third-stage air grooves 24 and the first-stage air grooves 18. The overlapping area between the two is one-tenth of the cross-sectional size of the first-stage air groove 18.

[0045] The secondary air groove 22 has a straight notch, and the projection of the primary air groove 18 on the connecting plate 19 is completely within the coverage of the secondary air groove 22. Dust-proof gauze meshes are embedded and installed in both the secondary air groove 22 and the air hole 26. By providing a buffer assembly composed of a piston tube 1, a piston 2, a piston rod 3, a primary adapter seat 4, a secondary adapter seat 5, a return spring 6, and a limiting member 7, and by installing a baffle 10 and an adapter 11 on the mounting seat 8 at the end of the piston tube 1, a primary air groove 18 is opened on the baffle 10, a secondary air groove 22 is opened on the connecting plate 19, a current-limiting plate 14 is provided in the inner cavity of the piston tube 1, and a tertiary air groove 24 is opened on the current-limiting plate 14. Thus, the primary air groove 18 and the tertiary air groove 24 play a role in current-limiting, effectively controlling the rebound rate of the piston rod 3. And when air enters the inside of the piston tube 1, the current-limiting plate 14 retracts, thus not affecting its air intake efficiency.

[0046] Embodiment 2

[0047] On the basis of Embodiment 1, ball grooves are opened on the side wall of the current-limiting plate 14. Two circles of ball grooves are evenly arranged, and ball bearings 27 are embedded and installed in the ball grooves. The ball bearings 27 are arranged in contact with the side wall of the inner cavity of the piston tube 1. A primary rubber plate 28 is adhesively bonded to the rear side of the baffle 10, and a secondary rubber plate 29 is adhesively bonded to the front side of the current-limiting plate 14. By opening ball grooves on the side wall of the current-limiting plate 14 and embedding and installing ball bearings 27 in the ball grooves, thus through the guiding action of the ball bearings 27, the flexibility of the current-limiting plate 14 during movement is effectively ensured.

[0048] A piston limiting ring 16 is integrally formed on the side wall of the inner cavity of the piston tube 1. When the piston 2 abuts against the piston limiting ring 16, its guide rod 23 does not contact the piston 2.

[0049] Embodiment 3

[0050] On the basis of Embodiment 2, a hydraulic support rod has the above buffer assembly.

[0051] Although the above description of the illustrative specific embodiments of the present application is provided for those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims, all application creations using the concept of the present application are within the scope of protection.

Claims

1. A buffer assembly, characterized in that: the buffer assembly includes: a piston tube (1), the piston tube (1) is of a circular tube structure, and a mounting seat (8) is integrally formed at the front side end of the piston tube (1). A threaded hole (9) is provided on the mounting seat (8), and a baffle (10) and an adapter (11) are installed at the port position of the mounting seat (8). A guide rod seat (13) is connected to the inner wall of the front end of the inner cavity of the piston tube (1) through a connecting rod (12), and a guide rod hole is provided on the guide rod seat (13); a piston (2), the piston (2) is movably arranged in the inner cavity of the piston tube (1); a piston rod (3), the piston rod (3) is fixedly connected to the piston (2), and a secondary adapter (30) is integrally formed at the rear side end of the piston rod (3); a primary adapter seat (4), the primary adapter seat (4) is rotatably connected to the adapter (11); a secondary adapter seat (5), the secondary adapter seat (5) is rotatably connected to the secondary adapter (30) at the end of the piston rod (3); a return spring (6), the return spring (6) is sleeved on the piston rod (3); a limiting member (7), the limiting member (7) is installed at the rear side end of the piston tube (1); a piston rod hole (25) is provided on the limiting member (7), the piston rod (3) passes through the piston rod hole (25), and an air hole (26) is provided on the limiting member (7). The air holes (26) are evenly arranged in a circle, and an internal thread structure is provided on the inner side wall of the limiting member (7), and the limiting member (7) is threadedly connected to the rear side end of the piston tube (1); a primary mounting hole (17) and a primary air groove (18) are provided on the baffle (10); the adapter (11) is composed of a connecting plate (19) and a primary adapter (20). The connecting plate (19) and the primary adapter (20) are integrally formed, and the primary adapter (20) is rotatably connected to the primary adapter seat (4). A secondary mounting hole (21) and a secondary air groove (22) are provided on the connecting plate (19). The primary mounting hole (17) and the secondary mounting hole (21) are correspondingly arranged with the threaded hole (9), and the connecting plate (19) and the baffle (10) are both positioned and installed on the mounting seat (8) through positioning screws; a flow limiting plate (14) is arranged in the inner cavity of the piston tube (1). A tertiary air groove (24) is provided on the flow limiting plate (14), and a guide rod (23) is integrally formed on the flow limiting plate (14). The guide rod (23) is movably arranged in the guide rod hole on the guide rod seat (13). The guide rod (23) is a rod body structure with a regular hexagon cross section, and the size of the guide rod hole matches the size of the guide rod (23). A support spring (15) is sleeved on the guide rod (23), and when the support spring (15) is in a reset state, the baffle (10) and the flow limiting plate (14) are in a state of being in contact with each other.

2. A buffer assembly according to claim 1, characterized in that: A set of the third-level air grooves (24) and the first-level air grooves (18) are symmetrically arranged. Both the third-level air grooves (24) and the first-level air grooves (18) are arc-shaped notch openings. The sizes of the third-level air grooves (24) and the first-level air grooves (18) are in conformity. The third-level air grooves (24) and the first-level air grooves (18) are arranged at a 90-degree angle to each other. There is an overlapping area between the third-level air grooves (24) and the first-level air grooves (18), and the area of the overlapping area between the two is one-tenth of the cross-sectional size of the first-level air grooves (18).

3. A buffer assembly according to claim 2, wherein: the second-level air grooves (22) are straight notch openings, and the projection of the first-level air grooves (18) on the connecting plate (19) is completely within the coverage of the second-level air grooves (22). Dust-proof gauze meshes are embedded and installed in both the second-level air grooves (22) and the air holes (26).

4. A buffer assembly according to claim 3, wherein: ball grooves are formed on the side wall of the current-limiting plate (14). Two circles of the ball grooves are evenly arranged. Ball bearings (27) are embedded and installed in the ball grooves. The ball bearings (27) are arranged in contact with the inner cavity side wall of the piston tube (1). A first-level rubber plate (28) is adhesively bonded to the rear side of the baffle (10), and a second-level rubber plate (29) is adhesively bonded to the front side of the current-limiting plate (14).

5. A buffer assembly according to claim 4, wherein: a piston limiting ring (16) is integrally formed on the inner cavity side wall of the piston tube (1). When the piston (2) abuts against the piston limiting ring (16), the guide rod (23) and the piston (2) are not in contact with each other.

6. A hydraulic support rod, wherein: the hydraulic support rod has the buffer assembly according to any one of claims 1-5 above.

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