Hydraulic buffer

Abstract

The utility model discloses a hydraulic buffer. The device comprises a shaft sleeve, a rotating shaft and a sliding part, one end of the rotating shaft is rotatably inserted into the shaft sleeve, the rotating shaft is sleeved with the sliding part in a threaded connection mode, and an inner cavity of the shaft sleeve is divided into an upper oil cavity and a lower oil cavity through the sliding part; the sliding part moves up and down in the shaft sleeve by rotating the rotating shaft, a first protruding edge and a second protruding edge are sequentially arranged on the periphery of the sliding part at intervals from top to bottom, a gap is formed between the first protruding edge and the inner wall of the shaft sleeve, a third mounting groove is formed between the first protruding edge and the second protruding edge, and a plurality of oil passing grooves are formed in the second protruding edge at intervals. The upper end of the oil passing groove extends to the third mounting groove, and the gap, the third mounting groove and the oil passing groove form an oil passing channel; a first sealing ring is further included, the first sealing ring can be assembled in the third installation groove in an up-and-down moving mode, and the opening degree of the oil passing channel is changed through up-and-down moving of the first sealing ring.

Description

TECHNICAL FIELD

[0001] The utility model relates to buffer technology field especially relates to a hydraulic buffer. BACKGROUND

[0002] The buffer is used for assembling on the flip cover, and the main design purpose is to slow down the falling speed of the flip cover, realize smooth and quiet closing action, and reduce the impact force generated by rapid closing, thereby protecting the flip cover and its connecting components from being damaged.

[0003] Most of the buffers on the market adopt the rib type structure, that is, two ribs are arranged on the inner wall of the shaft sleeve and the shaft core respectively, and a valve plate arranged on the rib is used to control the flow of damping oil to generate resistance, and the structure has the following defects:

[0004] 1. Due to the influence of part size fluctuation, the fitting gap between the shaft core and the shaft sleeve is not uniform, the rotation of the shaft core is not stable, and noise is easily generated during the opening and closing of the flip cover, and the flip cover shakes unstably;

[0005] 2. Due to the limitation of the size of the cavity, in order to ensure that the opening angle of the flip cover meets the requirements, the size of the rib on the shaft sleeve and the shaft core is relatively small, the strength is not enough, and the rib is easily broken and damaged, and the service life is short. UTILITY MODEL CONTENTS

[0006] In view of the problems existing in the prior art, the utility model provides a hydraulic buffer which can effectively solve the problems existing in the prior art.

[0007] The technical scheme of the utility model is:

[0008] According to one aspect of the utility model, a shaft sleeve, a rotating shaft and a sliding piece are included, one end of the rotating shaft is rotatably inserted into the shaft sleeve, the sliding piece is threadedly connected to the rotating shaft, and the sliding piece divides the inner cavity of the shaft sleeve into an upper oil cavity and a lower oil cavity; the sliding piece moves up and down in the shaft sleeve by rotating the rotating shaft, a first convex edge and a second convex edge are sequentially and spacedly arranged on the outer periphery of the sliding piece from top to bottom, the first convex edge forms a gap with the inner wall of the shaft sleeve, a third installation groove is formed between the first convex edge and the second convex edge, a plurality of oil passing grooves are spacedly arranged on the second convex edge, and the upper end of the oil passing groove extends to the third installation groove; a gap, a third installation groove and an oil passing groove form an oil passing channel; a first sealing ring is movably assembled in the third installation groove, and the opening of the oil passing channel is changed by the up and down movement of the first sealing ring.

[0009] Further, the lower end of the rotating shaft is a threaded rod, the sliding member is threadedly connected with the threaded rod, the lower end of the shaft sleeve is provided with a second mounting groove, and the threaded rod is provided with a shaft core extending towards the second mounting groove, and the shaft core is rotatably inserted into the second mounting groove.

[0010] Further, the outer periphery of the rotating shaft is provided with a support plate extending towards the shaft sleeve, and the inner wall of the shaft sleeve is correspondingly provided with a first boss, and the support plate is arranged on the first boss.

[0011] Further, the inner wall of the shaft sleeve is provided with a second boss extending towards the sliding member, and the second boss is arranged on the second boss.

[0012] Further, at least one end of the inner wall of the shaft sleeve is fixedly provided with a platform, the first boss is correspondingly provided with a first plane, and the first plane is matched with the platform.

[0013] Further, at least one end of the second boss is provided with a second plane, and the second plane is matched with the platform.

[0014] Further, a plurality of oil passing grooves are symmetrically arranged at both ends of the second boss.

[0015] Further, the sealing cover is fixedly arranged on the opening of the shaft sleeve, the gasket is clamped between the sealing cover and the support plate, and the second sealing ring is arranged between the sealing cover and the gasket.

[0016] Further, the upper end of the rotating shaft is a connecting head, the connecting head is exposed outside the shaft sleeve, the connecting head is used for locking with the connecting part of the flip cover assembly, and the gasket and the sealing cover are sequentially arranged outside the connecting head.

[0017] Further, the outer periphery of the shaft sleeve is provided with a first mounting groove for clamping the flip cover assembly.

[0018] Compared with the prior art, the technical scheme has the beneficial effects that:

[0019] In the scheme, the oil passing groove cooperates with the first sealing ring to achieve the slow descending effect of the flip cover, the size of the damping force can be controlled by adjusting the size, number and gap of the oil passing groove, thereby meeting the requirements of different flip cover weights and closing speeds, the hydraulic buffer has stronger adaptability due to the easy-to-adjust feature, the sliding member and the rotating shaft are threadedly connected, the rotating process of the rotating shaft is smooth, and therefore the noise generated during the opening and closing of the flip cover can be significantly reduced, which helps to improve the overall quality of the equipment and the user experience, compared with the rib type structure, the hydraulic buffer structure is more stable, and is not prone to problems such as uneven cooperation gap or rib fracture caused by part size fluctuation or cavity size limitation, and the stability and durability of the buffer are improved. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0022] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the sliding component in this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the bushing in this utility model;

[0025] Figure 5 Schematic diagram of the internal structure of the buffer body in the flip-top open / closed state. Figure 1 ;

[0026] Figure 6 Schematic diagram of the internal structure of the buffer body in the flip-top open / closed state. Figure 2 ;

[0027] In the diagram: Buffer body-100, bushing-1, upper oil chamber-10, first mounting groove-11, second mounting groove-12, first boss-13, platform-14, second boss-15, lower oil chamber-16, sliding part-2, clearance-20, threaded hole-21, third mounting groove-22, oil passage groove-23, first plane-24, second protrusion-25, first protrusion-26, second plane-251, first sealing ring-3, rotating shaft-4, support plate-41, threaded rod-42, shaft core-43, connector-44, gasket-5, second sealing ring-6, sealing cover-7, damping oil-8, flip cover assembly-A. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are only for illustrating the present invention and do not limit the scope of the present invention. Similarly, the following embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0029] As shown in Figures 1 to 6 , the present scheme provides a hydraulic buffer.

[0030] Please refer to Figure 1 and Figure 2 , including shaft sleeve 1, rotating shaft 4 and sliding piece 2, rotating shaft 4 is rotatably inserted in one end of shaft sleeve 1, sliding piece 2 is threadedly connected to rotating shaft 4, and sliding piece 2 divides the inner cavity of shaft sleeve 1 into upper oil chamber 10 and lower oil chamber 16; one of upper oil chamber 10 or lower oil chamber 16 is filled with damping oil 8, and upper oil chamber 10 is in communication with lower oil chamber 16; rotating shaft 4 is rotated to make sliding piece 2 move up and down in shaft sleeve 1; specifically, lower end of rotating shaft 4 is threaded rod 42, threaded hole 21 is arranged in the middle of sliding piece 2, threaded hole 21 of sliding piece 2 is threadedly matched with threaded rod 42; second mounting groove 12 is arranged at the lower end of shaft sleeve 1, threaded rod 42 is provided with shaft core 43 extending towards second mounting groove 12, and shaft core 43 is rotatably inserted into second mounting groove 12. It also includes sealing cover 7, which is fixedly arranged on the opening of shaft sleeve 1; preferably, sealing cover 7 is fixed with shaft sleeve 1 by ultrasonic welding. It also includes gasket 5 and second sealing ring 6, gasket 5 is clamped between sealing cover 7 and support plate 41, and second sealing ring 6 is assembled between sealing cover 7 and gasket 5. Upper end of rotating shaft 4 is connector 44, connector 44 is exposed outside shaft sleeve 1, connector 44 is used for locking with the connecting part of flip cover assembly A, and gasket 5 and sealing cover 7 are sequentially sleeved outside connector 44. The outer circumferential surface of shaft sleeve 1 is provided with first mounting groove 11 for clamping flip cover assembly A.

[0031] Please refer to Figures 1 to 6 , the outer periphery of sliding piece 2 is sequentially and spacedly provided with first protruding edge 26 and second protruding edge 25 from top to bottom, first protruding edge 26 forms gap 20 with the inner wall of shaft sleeve 1 for passing damping oil 8, third mounting groove 22 is formed between first protruding edge 26 and second protruding edge 25, a plurality of oil passing grooves 23 for passing damping oil 8 are spacedly arranged on second protruding edge 25, and the upper end of oil passing groove 23 extends to third mounting groove 22, gap 20, third mounting groove 22 and oil passing groove 23 form oil passing channel; specifically, a plurality of oil passing grooves 23 are symmetrically arranged at both ends of second protruding edge 25. It also includes first sealing ring 3, which is movably assembled in third mounting groove 22, and the opening of oil passing channel is changed by the up and down movement of first sealing ring 3.

[0032] Please refer to Figure 1 , Figure 2 and Figure 3 , the outer periphery of rotating shaft 4 extends towards shaft sleeve 1 and is provided with support plate 41, the inner wall of shaft sleeve 1 is correspondingly provided with first protruding edge 13, and support plate 41 is arranged on first protruding edge 13. The inner wall of shaft sleeve 1 extends towards sliding piece 2 and is provided with second protruding edge 15, and second protruding edge 25 is arranged on second protruding edge 15.

[0033] Please see Figures 1 to 4 The inner wall of the sleeve 1 is fixed with at least one platform 14, and the first convex edge 26 is correspondingly provided with a first plane 24 which is matched with the platform 14. The second convex edge 25 is provided with at least one second plane 251 which is matched with the platform 14. In the embodiment, the number of the platforms 14 is two, and the two platforms 14 are symmetrically fixed on the sleeve 1. The second convex edge 25 and the first convex edge 26 are correspondingly symmetrically provided with the first plane 24 and the second plane 251. The first plane 24 and the second plane 251 are matched with the platform 14, so that the sliding piece 2 cannot rotate with the rotation of the rotating shaft 4, but can only move up and down.

[0034] Working principle: the buffer body 100 is assembled on the flip assembly A;

[0035] Please see Figure 5 The flip assembly A is in the open state: the damping oil 8 is located in the upper oil chamber 10, the sliding piece 2 is located in the lower oil chamber 16, the flip is opened, the rotating shaft 4 rotates forward, the sliding piece 2 moves upward, the first sealing ring 3 moves downward due to the oil pressure, the first sealing ring 3 is tightly attached to the second convex edge 25, and the damping oil 8 in the upper oil chamber 10 flows into the lower oil chamber 16 through the oil flow groove 23. Because the second convex edge 25 is provided with a plurality of oil flow grooves 23, the damping oil 8 in the upper oil chamber 10 can quickly and smoothly flow into the lower oil chamber 16 through the oil flow grooves 23, so that the resistance received by the rotating shaft 4 during rotation is small, and the flip can be easily opened.

[0036] Please see Figure 6 The flip assembly A is in the closed state: the damping oil 8 is located in the lower oil chamber 16, the sliding piece 2 is located in the upper oil chamber 10, the flip is closed, the rotating shaft 4 rotates reversely, the sliding piece 2 moves downward, the first sealing ring 3 moves upward due to the oil pressure, the first sealing ring 3 is tightly attached to the first convex edge 26, the first sealing ring 3 shields the oil flow groove 23 located in the third installation groove 22, and the damping oil 8 in the lower oil chamber 16 flows into the upper oil chamber 10 through the gap 20. Because the first sealing ring 3 shields the oil flow groove 23 located in the third installation groove 22, the damping oil 8 in the lower oil chamber 16 can only flow into the upper oil chamber 10 through the gap 20, the opening degree of the oil flow passage is small, thereby a large resistance is generated to make the rotating torque of the rotating shaft 4 large, so that the closing speed of the flip can be slowed down, thereby the flip slow descending effect is achieved.

[0037] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and the modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hydraulic buffer, comprising a sleeve (1), a rotating shaft (4) and a sliding piece (2), the rotating shaft (4) is rotatably inserted into the sleeve (1) at one end, the sliding piece (2) is threadedly sleeved on the rotating shaft (4), and the sliding piece (2) divides an inner cavity of the sleeve (1) into an upper oil cavity (10) and a lower oil cavity (16); the sliding piece (2) moves up and down in the sleeve (1) by rotating the rotating shaft (4), characterized in that, The outer periphery of the sliding piece (2) is sequentially and spacedly provided with a first protruding edge (26) and a second protruding edge (25) from top to bottom, the first protruding edge (26) forms a gap (20) with the inner wall of the shaft sleeve (1), a third mounting groove (22) is formed between the first protruding edge (26) and the second protruding edge (25), a plurality of oil passing grooves (23) are spacedly provided on the second protruding edge (25), and the upper ends of the oil passing grooves (23) extend to the third mounting groove (22), the gap (20), the third mounting groove (22) and the oil passing grooves (23) form an oil passing channel; further comprising a first sealing ring (3), the first sealing ring (3) is movably assembled in the third mounting groove (22), and the opening of the oil passing channel is changed by the upward and downward movement of the first sealing ring (3).

2. A hydraulic damper as claimed in claim 1, characterised in that The lower end of the rotating shaft (4) is a threaded rod (42), the sliding piece (2) is threadedly connected with the threaded rod (42), the lower end of the shaft sleeve (1) is provided with a second mounting groove (12), the threaded rod (42) is provided with a shaft core (43) extending towards the second mounting groove (12), and the shaft core (43) is rotatably inserted into the second mounting groove (12).

3. Hydraulic damper according to claim 1 or 2, characterized in that The outer periphery of the rotating shaft (4) is provided with a support plate (41) extending towards the shaft sleeve (1), and the inner wall of the shaft sleeve (1) is correspondingly provided with a first protruding platform (13), and the support plate (41) is arranged on the first protruding platform (13).

4. A hydraulic damper as claimed in claim 1, characterised in that The inner wall of the shaft sleeve (1) is provided with a second protruding platform (15) extending towards the sliding piece (2), and the second protruding edge (25) is arranged on the second protruding platform (15).

5. A hydraulic damper as claimed in claim 1, wherein At least one end of the inner wall of the shaft sleeve (1) is fixedly provided with a platform (14), the first protruding edge (26) is correspondingly provided with a first plane (24), and the first plane (24) is matched with the platform (14).

6. A hydraulic damper as claimed in claim 5, characterised in that At least one end of the second protruding edge (25) is provided with a second plane (251), and the second plane (251) is matched with the platform (14).

7. A hydraulic damper as claimed in claim 1, characterised in that A plurality of oil passing grooves (23) are symmetrically arranged at both ends of the second protruding edge (25).

8. A hydraulic damper as claimed in claim 1, characterised in that Further comprising a sealing cover (7), the sealing cover (7) is fixedly arranged on the opening of the shaft sleeve (1); further comprising a gasket (5) and a second sealing ring (6), the gasket (5) is clamped between the sealing cover (7) and the support plate (41), and the second sealing ring (6) is assembled between the sealing cover (7) and the gasket (5).

9. A hydraulic damper as claimed in claim 8, characterised in that, The upper end of the rotating shaft (4) is a connecting head (44), the connecting head (44) is exposed outside the shaft sleeve (1), the connecting head (44) is used for locking with the connecting part of the flip cover assembly (A), and the gasket (5) and the sealing cover (7) are sequentially arranged outside the connecting head (44).

10. A hydraulic damper as claimed in claim 1, characterised in that The outer periphery of the shaft sleeve (1) is provided with a first mounting groove (11) for clamping the flip cover assembly (A).

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