Damper assembly

Abstract

The damper assembly comprises a lower base, a rotating base installed in the lower base and an upper sealing cover fixed to the upper end of the lower base, a plurality of damping cavities are formed between the rotating base and the lower base, the damping cavities are filled with damping grease, the rotating base is provided with a center hole penetrating through the upper end and the lower end, a one-way bearing is fixedly embedded in the center hole, and the one-way bearing is provided with a shaft hole; the inner diameter of the shaft hole is smaller than that of the center hole. During use, the lower seat is fixed on the shell, the shaft hole of the one-way bearing is sleeved on the rotating shaft of the upper cover, and when the upper cover is opened relative to the shell by hands, the rotating shaft of the upper cover idles under the action of the one-way bearing, so that a user can smoothly open the upper cover, labor is saved, and the hand feeling is better. When the hand is released and the upper cover freely falls, the rotating shaft of the upper cover drives the rotating seat to rotate relative to the lower seat under the action of the one-way bearing, and the rotating seat is subjected to the resistance of the damping grease in the damping cavity when rotating relative to the lower seat, so that the rotating speed is reduced, and the buffering function is realized.

Description

Technical field:

[0001] The invention relates to the technical field of damper products, in particular to a damper assembly. Background technology:

[0002] Dampers are widely used in life, such as flaps, hinges, doors and windows, etc. Through the resistance of the damper, resistance can be provided in at least one direction of rotation, the corresponding mechanical force or external force can be eliminated, and the service life of products such as toilet covers, hinges, doors and windows can be increased; and the large impact force when opening and closing covers, doors and windows can be avoided, which may cause pinching of fingers, and at the same time, avoid causing large noise or damage.

[0003] The Chinese invention patent with application number 202420998757.3 discloses a new type of rotary damper, including a shell and a rotor, wherein a retaining ring is formed inwardly at the bottom of the shell, a damping chamber is provided between the inner wall of the shell and the retaining ring, an end cover is provided at the upper part of the rotor, and a circular rotating core is provided at the lower part of the rotor. The rotating core is coaxially installed in the damping chamber, and the gap between the damping chamber and the rotating core is filled with damping fluid. The rotating core is laterally provided with a damping hole connected to the inner chamber, a circle of grooves is provided on the upper inner wall of the shell, and a convex ring is provided on the upper outer wall of the rotor, which is clamped on the groove, and the inner and outer sides of the bottom of the end cover are on the same horizontal plane.

[0004] When the above-mentioned rotary damper is in use, the shaft hole on the shell is fixedly connected to the shaft of an object (such as the shell), and the rotor is fixed to another object (such as the upper cover), so that the two objects form a rotatable connection through the rotary damper, and when the two rotate, the rotor is driven to rotate relative to the shell. Since the damping hole is provided on the rotating core at the bottom of the rotor, the damping fluid flow is blocked during the rotation of the rotating core, so that uniform resistance is obtained, and the damping effect is long-lasting. However, whether the two objects rotate clockwise or counterclockwise, they will form damping, that is, resistance will be generated during the opening or closing of the upper cover relative to the shell, and under normal conditions, no resistance is generated when the upper cover is opened relative to the shell, but this rotary damper provides resistance, resulting in the upper cover not being smooth enough when opening relative to the shell, affecting the feel.

[0005] In view of this, the inventor proposes the following technical solution. Summary of the invention:

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a damper assembly.

[0007] In order to solve the above technical problems, the present invention adopts the following technical scheme: the damper assembly includes a lower seat, a rotating seat installed in the middle, and an upper sealing cover fixed at the upper end of the lower seat and limiting the rotating seat in the lower seat, a plurality of damping chambers are formed between the rotating seat and the lower seat, the damping chambers are filled with damping grease, the rotating seat has a center hole passing through the upper and lower ends, a one-way bearing is also embedded and fixed in the center hole, the one-way bearing has an axial hole for the rotating shaft to pass through, the inner diameter of the axial hole is smaller than the inner diameter of the center hole, and the axial hole passes through the upper and lower ends of the lower seat.

[0008] Furthermore, in the above technical solution, a gasket is also provided at the upper end of the center hole, and the gasket is placed on the upper end of the rotating seat.

[0009] Furthermore, in the above technical solution, the center hole is provided with a recessed groove, and the one-way bearing is embedded and fixed in the recessed groove; the axial hole of the one-way bearing is provided with a plurality of positioning ribs which are distributed at intervals and used for tensioning and positioning with the rotating shaft, and the positioning ribs are distributed along the axial direction of the axial hole.

[0010] Furthermore, in the above technical solution, the lower seat is provided with an annular groove downwardly along its upper end, a mounting hole located at the center of the annular groove and isolated from the annular groove, and an annular partition wall located between the annular groove and the mounting hole, the lower end of the rotating seat has a rotating ring and a rotating core located at the center of the rotating ring and spaced apart from the rotating ring, and a downwardly opening groove body located between the rotating ring and the rotating core, the rotating ring is installed in the annular groove, and a plurality of damping grooves are arranged on the outside of the rotating ring, the damping cavity is formed between the damping groove and the inner wall of the annular groove, the rotating core is installed in the mounting hole, and the groove body is sleeved on the annular partition wall; the center hole is arranged on the rotating core.

[0011] Furthermore, in the above technical solution, a first annular groove is provided at the upper end of the annular partition wall, an inner sealing ring is sleeved on the first annular groove, and the inner sealing ring is in compression contact with the inner wall of the groove body.

[0012] Furthermore, in the above technical solution, a second annular groove is arranged on the periphery of the upper end of the rotating seat, and an outer sealing ring is sleeved on the second annular groove, and the outer sealing ring is in compression contact with the inner wall of the upper sealing cover.

[0013] Furthermore, in the above technical solution, a flange protruding outward is formed on the outer periphery of the upper end of the upper sealing cover, which abuts against the upper edge of the lower seat and is fixed by welding. The upper sealing cover is also pressed into the lower seat and placed above the rotating ring.

[0014] Furthermore, in the above technical solution, an arc-shaped connecting plate is formed on one side of the lower end of the lower seat, and the arc-shaped connecting plate is provided with a buckle for fixed assembly; a screw column is formed on the outer side surface of the lower seat, and the screw column has a hole that passes through the upper and lower end surfaces and for the screw to pass through.

[0015] Furthermore, in the above technical solution, a plurality of reinforcing ribs for reinforcing the arc-shaped connecting plate are formed between the lower end of the lower seat and the arc-shaped connecting plate.

[0016] Furthermore, in the above technical solution, a damping direction mark is provided on the upper end surface of the upper sealing cover.

[0017] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art: when the present invention is used, the lower seat is fixed on the shell of the product, and the shaft hole of the one-way bearing is sleeved on the rotating shaft of the upper cover of the product. When the upper cover is opened relative to the shell by hand and rotated upward, the rotating shaft of the upper cover is idle due to the action of the one-way bearing, so that the user can open the upper cover relative to the shell smoothly, saving effort and having a better hand feel. After releasing the hand, the upper cover falls freely relative to the shell under the action of its own gravity. At this time, the rotating shaft of the upper cover is driven by the one-way bearing to rotate the rotating seat relative to the lower seat, and when the rotating seat rotates relative to the lower seat, it will be subject to the resistance of the damping grease in the damping chamber, which reduces the rotation speed and realizes the buffering function, so that the upper cover falls slowly relative to the shell, avoiding undesirable phenomena such as collision, and also avoiding causing loud noise or causing damage to it. Description of the drawings:

[0018] Figure 1 is a stereogram of the present invention;

[0019] Figure 2 It is a stereogram of another viewing angle of the present invention;

[0020] Figure 3 is an exploded view of the present invention;

[0021] Figure 4 is a cross-sectional view of the present invention;

[0022] Figure 5 is a cross-sectional view from another perspective of the present invention;

[0023] Figure 6 It is the internal structure diagram of the present invention;

[0024] Figure 7 It is a three-dimensional diagram of the rotating seat in the present invention;

[0025] Figure 8 is a three-dimensional diagram of the gasket in the present invention;

[0026] Fig. 9 It is a three-dimensional diagram of the upper sealing cover in the present invention. Specific implementation method:

[0027] The present invention is further described below in conjunction with specific embodiments and drawings.

[0028] See Figure 1-9 As shown, a damper assembly includes a lower seat 1, a rotating seat 2 installed therein, and an upper sealing cover 3 fixed to the upper end of the lower seat 1 and confining the rotating seat 2 in the lower seat 1. A plurality of damping chambers are formed between the rotating seat 2 and the lower seat 1. The damping chambers are filled with damping grease. The rotating seat 2 has a central hole 201 that passes through the upper and lower ends. When working, the rotating seat 2 can rotate relative to the lower seat 1. However, at this time, the two will be subject to the resistance of the damping grease in the damping chamber, which reduces the rotation speed and realizes the buffering function.

[0029] A one-way bearing 4 is also embedded and fixed in the center hole 201. The one-way bearing 4 has an axial hole 41 for the rotating shaft to pass through. The inner diameter of the axial hole 41 is smaller than the inner diameter of the center hole 201, and the axial hole 41 passes through the upper and lower ends of the lower seat 1. The purpose of adding a one-way bearing 4 in the present invention is to enable the rotating seat 2 to rotate relative to the lower seat 1 when the rotating shaft rotates in one direction, and the rotating seat 2 will be subject to the resistance of the damping grease in the damping chamber when it rotates relative to the lower seat 1, so as to reduce the rotation speed and realize the buffering function. However, when the rotating shaft rotates in the other direction, the rotating shaft will idle, and it cannot drive the rotating seat 2 to rotate relative to the lower seat 1, so that the rotation of the rotating shaft will not be damped, so that the rotation is smoother. The above-mentioned one direction and the other direction refer to the clockwise direction and the counterclockwise direction; or, the above-mentioned one direction and the other direction refer to the counterclockwise direction and the clockwise direction.

[0030] Specifically, when the present invention is used, the lower seat 1 is fixed on the shell of the product, and the shaft hole 41 of the one-way bearing 4 is sleeved on the rotating shaft of the upper cover of the product. When the upper cover is opened relative to the shell by hand and rotated upward, the rotating shaft of the upper cover is idle due to the action of the one-way bearing 4, so that the user can open the upper cover relative to the shell smoothly, saving effort and having a better hand feel. After releasing the hand, the upper cover falls freely relative to the shell under the action of its own gravity. At this time, the rotating shaft of the upper cover is driven by the one-way bearing 4 to rotate relative to the lower seat 1, and the rotating seat 2 will be subject to the resistance of the damping grease in the damping chamber when rotating relative to the lower seat 1, which reduces the rotation speed and realizes the buffering function, so that the upper cover falls slowly relative to the shell, avoiding collisions, impacts, pinching fingers and other undesirable phenomena, and also avoiding causing loud noise or causing damage.

[0031] Alternatively, the lower seat 1 is fixed on the upper cover of the product, and the shaft hole 41 of the one-way bearing 4 is sleeved on the rotating shaft of the shell of the product. When the upper cover is opened relative to the shell by hand and rotated upward, the rotating shaft of the shell is idle due to the action of the one-way bearing 4, so that the user can open the upper cover relative to the shell smoothly, saving effort and having a better hand feel. After releasing the hand, the upper cover falls freely relative to the shell under the action of its own gravity. At this time, since the rotating shaft of the shell is acted upon by the one-way bearing 4, the lower seat 1 is driven to rotate relative to the rotating seat 2. When the lower seat 1 rotates relative to the rotating seat 2, it will be subject to the resistance of the damping grease in the damping cavity, which reduces the rotation speed and realizes the buffering function, so that the upper cover falls slowly relative to the shell, avoiding undesirable phenomena such as collision, and also avoiding causing loud noise or causing damage to it.

[0032] The one-way bearing 4 is a conventional product of the prior art.

[0033] The present invention does not need to install a core shaft, so that the length of the entire product is shorter, that is, the length direction is shortened to achieve miniaturization and compactness of the structure, further reducing the space, which is conducive to the application of structures with special space requirements.

[0034] The lower seat 1 is generally made of metal, such as stainless steel or zinc alloy. Of course, it can be made of plastic as needed. It can be made of different materials according to actual use requirements. An arc-shaped connecting plate 14 is formed on one side of the lower end of the lower seat 1, and the arc-shaped connecting plate 14 is provided with a buckle 141 for fixed assembly; a screw column 15 is formed on the outer side of the lower seat 1, and the screw column 15 has a hole 151 that passes through the upper and lower end surfaces and is passed through by the screw. When the lower seat 1 is assembled with the above-mentioned shell or upper cover, the arc-shaped connecting plate 14 is embedded in the positioning groove of the shell or upper cover, and the buckle in the positioning groove is also engaged with the buckle 141 of the arc-shaped connecting plate 14 for positioning. At the same time, the hole 151 of the screw column 15 corresponds to the perforation of the shell or upper cover, and the screw passes through the perforation and is screwed to the hole 151 of the screw column 15, thereby ensuring that the lower seat 1 is fixedly assembled with the above-mentioned shell or upper cover, and the structure is firm and stable.

[0035] A plurality of reinforcing ribs 16 are formed between the lower end of the lower seat 1 and the arc-shaped connecting plate 14 to reinforce the arc-shaped connecting plate 14 , thereby increasing the strength of the arc-shaped connecting plate 14 and making it less likely to break.

[0036] A gasket 5 is also provided at the upper end of the center hole 201 . The gasket 5 is placed at the upper end of the rotating seat 2 , and can protect the one-way bearing 4 , thereby improving the quality and service life of the present invention.

[0037] The center hole 201 is provided with a recessed groove 202, and the one-way bearing 4 is embedded and fixed in the recessed groove 202, which can stably support the one-way bearing 4 and is beneficial to improving the stability of the assembly of the one-way bearing 4 and the rotating seat 2; the axial hole 41 of the one-way bearing 4 is provided with a plurality of positioning ribs 40 which are distributed at intervals and used for tensioning and positioning with the rotating shaft. The positioning ribs 40 are distributed along the axial direction of the axial hole 41, and are in contact with the outside of the rotating shaft, thereby improving the stability of the assembly structure. In particular, a limiting groove is provided on the outside of the rotating shaft, and the positioning rib 40 is embedded and positioned in the limiting groove, thereby ensuring the stability of the assembly structure and enabling the rotating shaft and the axial hole 41 of the one-way bearing 4 to form a stable assembly.

[0038] The assembly structure of the lower seat 1 and the rotating seat 2 is as follows:

[0039] The lower seat 1 is provided with an annular groove 11 along its upper end, a mounting hole 12 located at the center of the annular groove 11 and isolated from the annular groove 11, and an annular partition wall 13 located between the annular groove 11 and the mounting hole 12. The lower end of the rotating seat 2 has a rotating ring 21, a rotating core 22 located at the center of the rotating ring 21 and spaced from the rotating ring 21, and a groove body 23 with an opening downward located between the rotating ring 21 and the rotating core 22. The rotating ring 21 is installed in the annular groove 11, and the rotating ring 21 is provided with a There are a plurality of damping grooves 211, and the damping cavity is formed between the damping grooves 211 and the inner wall of the annular groove 11, the rotating core 22 is installed in the mounting hole 12, and the groove body 23 is sleeved on the annular partition wall 13, so that the lower seat 1 can participate in stably carrying the rotating seat 2, and the rotating ring 21 is installed in the annular groove 11, the rotating core 22 is installed in the mounting hole 12, and the groove body 23 is sleeved on the annular partition wall 13, so that the assembly structure of the lower seat 1 and the rotating seat 2 is stable, and the rotation between the rotating seat 2 and the lower seat 1 is more stable. The central hole 201 is set on the rotating core 22.

[0040] The upper end of the annular partition wall 13 is provided with a first annular groove 131 , and the first annular groove 131 is sleeved with an inner sealing ring 6 , which is in compression contact with the inner wall of the groove body 23 to prevent the damping grease from overflowing.

[0041] A second annular groove 24 is disposed on the periphery of the upper end of the rotating seat 2. An outer sealing ring 7 is sleeved on the second annular groove 24. The outer sealing ring 7 is in compression contact with the inner wall of the upper sealing cover 3 to prevent the damping grease from overflowing.

[0042] The upper end of the upper sealing cover 3 is formed with an outwardly protruding flange 31, which abuts against the upper edge of the lower seat 1 and is fixed by welding. Its assembly structure is stable and can effectively prevent the rotating seat 2 from falling out relative to the lower seat 1. The upper sealing cover 3 is also pressed into the lower seat 1 and placed above the rotating ring 21, which can more effectively prevent the rotating seat 2 from falling out relative to the lower seat 1.

[0043] The upper end surface of the upper sealing cover 3 is provided with a damping direction mark 32, which can provide a mark for the user and facilitate the installation and use of the present invention.

[0044] The lower end surface of the upper sealing cover 3 is also formed with a circle of ribs 33, which are placed above the rotating ring 21 of the rotating seat 2. When the rotating seat 2 rotates and contacts the upper sealing cover 3, it only contacts the lower end surface of the ribs 33, and its contact area is small, which can reduce friction.

[0045] In summary, when the present invention is used, the lower seat 1 is fixed on the shell of the product, and the shaft hole 41 of the one-way bearing 4 is sleeved on the rotating shaft of the upper cover of the product. When the upper cover is opened relative to the shell by hand and rotated upward, the rotating shaft of the upper cover is idle due to the action of the one-way bearing 4, so that the user can open the upper cover relative to the shell smoothly, saving effort and having a better hand feel. After releasing the hand, the upper cover falls freely relative to the shell under the action of its own gravity. At this time, the rotating shaft of the upper cover is driven by the one-way bearing 4 to rotate relative to the lower seat 1, and the rotating seat 2 will be subject to the resistance of the damping grease in the damping chamber when rotating relative to the lower seat 1, which reduces the rotation speed and realizes the buffering function, so that the upper cover falls slowly relative to the shell, avoiding adverse phenomena such as collision, and also avoiding causing loud noise or causing damage to it.

[0046] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A damper assembly, comprising a lower seat (1), a rotating seat (2) installed therein, and an upper sealing cover (3) fixed to the upper end of the lower seat (1) and confining the rotating seat (2) in the lower seat (1), a plurality of damping chambers are formed between the rotating seat (2) and the lower seat (1), the damping chambers are filled with damping grease, the rotating seat (2) has a central hole (201) passing through the upper and lower ends, and is characterized in that: A one-way bearing (4) is also embedded and fixed in the center hole (201), and the one-way bearing (4) has an axial hole (41) for the rotating shaft to pass through, the inner diameter of the axial hole (41) is smaller than the inner diameter of the center hole (201), and the axial hole (41) passes through the upper and lower ends of the lower seat (1).

2. A damper assembly according to claim 1, characterized in that: A gasket (5) is also provided at the upper end of the central hole (201), and the gasket (5) is placed on the upper end of the rotating seat (2).

3. A damper assembly according to claim 1, characterized in that: The center hole (201) is provided with a recessed groove (202), and the one-way bearing (4) is embedded and fixed in the recessed groove (202); the shaft hole (41) of the one-way bearing (4) is provided with a plurality of positioning ribs (40) which are distributed at intervals and used for tensioning and positioning with the rotating shaft, and the positioning ribs (40) are distributed along the axial direction of the shaft hole (41).

4. A damper assembly according to any one of claims 1 to 3, characterized in that: The lower seat (1) is provided with an annular groove (11) extending downwardly from its upper end, a mounting hole (12) located at the center of the annular groove (11) and isolated from the annular groove (11), and an annular partition wall (13) located between the annular groove (11) and the mounting hole (12); the lower end of the rotating seat (2) is provided with a rotating ring (21), a rotating core (22) located at the center of the rotating ring (21) and spaced apart from the rotating ring (21), and a rotating core (22) located between the rotating ring (21) and the rotating core (21). The rotating ring (21) is installed in the annular groove (11), and a plurality of damping grooves (211) are arranged outside the rotating ring (21), and the damping cavity is formed between the damping grooves (211) and the inner wall of the annular groove (11), the rotating core (22) is installed in the mounting hole (12), and the groove body (23) is sleeved on the annular partition wall (13); the central hole (201) is arranged on the rotating core (22).

5. A damper assembly according to claim 4, characterized in that: A first annular groove (131) is provided at the upper end of the annular partition wall (13), an inner sealing ring (6) is sleeved on the first annular groove (131), and the inner sealing ring (6) is in compression contact with the inner wall of the groove body (23).

6. A damper assembly according to claim 4, characterized in that: A second annular groove (24) is arranged on the periphery of the upper end of the rotating seat (2), and an outer sealing ring (7) is sleeved on the second annular groove (24). The outer sealing ring (7) is in compression contact with the inner wall of the upper sealing cover (3).

7. A damper assembly according to claim 4, characterized in that: The upper end of the upper sealing cover (3) is formed with a flange (31) protruding outward, and the flange (31) abuts against the upper edge of the lower seat (1) and is fixed by welding. The upper sealing cover (3) is also pressed into the lower seat (1) and placed above the rotating ring (21).

8. A damper assembly according to claim 4, characterized in that: An arc-shaped connecting plate (14) is formed on one side of the lower end of the lower seat (1), and the arc-shaped connecting plate (14) is provided with a buckle (141) for fixing and assembling; a screw column (15) is formed on the outer side surface of the lower seat (1), and the screw column (15) has a hole (151) that passes through the upper and lower end surfaces and is for the screw to pass through.

9. A damper assembly according to claim 8, characterized in that: A plurality of reinforcing ribs (16) for reinforcing the arc-shaped connecting plate (14) are formed between the lower end of the lower seat (1) and the arc-shaped connecting plate (14).

10. A damper assembly according to claim 7, characterized in that: The upper end surface of the upper sealing cover (3) is provided with a damping direction mark (32).

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