Damper

Abstract

The utility model provides a damper which comprises a rotating shaft and a shell sleeved on the periphery of the rotating shaft, the rotating shaft can rotate relative to the shell, the rotating shaft is located inside the shell and provided with an axial actuating piece on one side far away from the extending end of the rotating shaft, an elastic piece is arranged inside the shell, one end of the elastic piece is fixedly connected with the inner wall of the shell, and the other end of the elastic piece is fixedly connected with the outer wall of the shell. The other end of the elastic piece is connected with the axial actuating piece; by arranging the axial actuating piece matched with the rotating shaft, when the rotating shaft rotates, the axial actuating piece can be driven by the axial driving piece to rotate in the radial direction, meanwhile, axial compression motion is generated, so that the bottom elastic piece is compressed, and then damping force is provided through elastic restoring force of the elastic piece; therefore, damping force is provided through the axial space to reduce excessive occupation of a damper in the prior art on the radial space, the radial occupied space of the damper is reduced, consumables are reduced, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of damping devices, and particularly relates to a damper. Background Art

[0002] A damper is a device that utilizes damping characteristics to slow down mechanical vibrations and consume kinetic energy. It is often applied in environments such as refrigerator cabinet doors and drawers to provide corresponding damping forces during the closing process, so as to slow down the unexpected damage that may be caused to the cabinet doors and drawers due to excessive closing forces.

[0003] The dampers in the prior art can adopt various forms to provide corresponding damping forces. For example, through elastic members, damping oil, friction plates, etc. However, on the one hand, their structures are complex, often requiring relatively complex loading and unloading processes, which are time-consuming and laborious; on the other hand, for elastic member and friction plate dampers, after being used for a period of time, it is necessary to replace the internal elastic members and friction plates to ensure that the provided damping force meets the requirements; in addition, the assembly accuracy requirements for elastic member and friction plate dampers are high, which is extremely likely to affect the damping effect.

[0004] Therefore, there is an urgent need to provide a damper to solve the defects and deficiencies existing in the above prior art. Summary of the Invention

[0005] In order to solve the defects and deficiencies existing in the prior art, the utility model provides a damper.

[0006] The specific solution provided by the utility model is as follows:

[0007] A damper, the damper includes a rotating shaft, the rotating shaft is located inside the housing and can rotate relative to the housing, and is characterized in that: blades are fixed to the outer circumference of the rotating shaft by a local clamping method, and damping oil is accommodated between the blades and the inner wall of the housing.

[0008] As a further preferred embodiment of the utility model, the rotating shaft includes an outer shaft portion, a limiting portion and an inner shaft portion. One end of the outer shaft portion is fixedly connected to the limiting portion, and the other end extends out of the housing; one end of the inner shaft portion is fixedly connected to the limiting portion, and the other end is located inside the housing.

[0009] As a further preferred embodiment of the utility model, the outer diameters of the outer shaft portion and the limiting portion are greater than the outer diameter of the inner shaft portion.

[0010] As a further preferred embodiment of the utility model, a sealing groove is formed on the outer circumference of the rotating shaft and at the top of the limiting portion, and a support ring and a sealing ring are sequentially accommodated in the sealing groove from outside to inside.

[0011] As a further preferred embodiment of the present utility model, an inner shaft fixing portion fixedly engaged with the blade is convexly provided on the outer periphery of the inner shaft portion near the limiting portion, and the inner shaft fixing portion is only provided at both axial ends of the outer periphery of the inner shaft portion near the limiting portion.

[0012] As a further preferred embodiment of the present utility model, an external thread engaged with the nut is provided at the end of the inner shaft portion extending into the interior of the housing.

[0013] As a further preferred embodiment of the present utility model, the housing includes a housing portion and housing fixing portions fixed to both sides of the housing portion, and a plurality of fixing holes are provided inside the housing fixing portions.

[0014] As a further preferred embodiment of the present utility model, fixing grooves engaged with the inner shaft fixing portion in a corresponding manner are formed at both axial ends of the inner wall of the blade.

[0015] As a further preferred embodiment of the present utility model, a limiting ring is further sleeved on the outer periphery of one end of the rotating shaft near the nut, a first washer is provided between the limiting ring and the nut, and a second washer is provided between the limiting ring and the housing.

[0016] As a further preferred embodiment of the present utility model, the limiting ring includes a large ring and a small ring formed integrally, the outer diameter of the large ring is larger than the outer diameter of the small ring, the side surface of the large ring near the small ring abuts against the end surface of the housing through a gasket, and the small ring extends into the interior of the housing and its outer edge abuts against the inner wall of the housing.

[0017] Compared with the prior art, the technical effects that the present utility model can achieve include:

[0018] 1) The present utility model provides a damper. The rotating shaft and the blade are fixedly engaged only through clamping, without the additional intervention of fixing parts, with a simple structure and convenient loading and unloading.

[0019] 2) The present utility model provides a damper. The damping force is provided by damping oil to replace the elastic parts and friction plate dampers in the prior art, with a long service life, good damping stability, and no need to replace the internal elastic parts and friction plates to ensure that the provided damping force meets the requirements.

[0020] 3) The present utility model provides a damper, with low requirements for assembly accuracy and capable of stably providing damping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the present utility model.

[0022] Figure 2 It is an exploded structural diagram of the present utility model.

[0023] Figure 3 This is a sectional view structure diagram of the present utility model.

[0024] Figure 4 This is an internal structure diagram of the housing of the present utility model. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" 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 utility model can be understood according to specific situations.

[0028] [First Embodiment]

[0029] As Figures 1-4 shown is a damper provided by the first embodiment of the present utility model. As Figure 1 shown, the damper includes a rotating shaft 1. The rotating shaft 1 is located inside the housing 2 and can rotate relative to the housing 2. A blade 3 is fixed to the outer periphery of the rotating shaft 1 by a local clamping method. A damping oil is accommodated between the blade 3 and the inner wall of the housing 2. As Figure 4As shown, the inner wall of the housing 2 is provided with ribs 23. While realizing the rotational limit of the rotating shaft 1 through the ribs 23, the damping oil is located in the cavity divided by the ribs 23. After the rotating shaft 1 rotates in the housing 2 for a certain stroke, the damping oil is squeezed, so that the volume of the damping oil decreases and the pressure increases, and thus the damping force of the damping oil is received. And this damping force increases as the rotation angle gradually increases. Therefore, when applied to environments such as refrigerator cabinet doors and drawers, a corresponding damping force is provided during the closing process to slow down the unexpected damage that may be caused to the cabinet doors and drawers due to excessive closing force.

[0030] As Figures 2-3 shown, the rotating shaft 1 in this embodiment includes an outer shaft portion 11, a limiting portion 12 and an inner shaft portion 13. One end of the outer shaft portion 11 is fixedly connected to the limiting portion, and the other end extends outside the housing 2; one end of the inner shaft portion 13 is fixedly connected to the limiting portion, and the other end is located inside the housing 2.

[0031] The outer diameters of the outer shaft portion 11 and the limiting portion 12 are larger than the outer diameter of the inner shaft portion 13, so as to realize the axial positioning of the rotating shaft 1 inside the housing 2; a sealing groove 121 is opened on the outer circumference of the rotating shaft 1 and at the top of the limiting portion 12. A support ring 5 and a sealing ring 4 are sequentially accommodated in the sealing groove 121 from outside to inside. Thus, while effectively ensuring the sealing effect, the positioning and supporting stability of the sealing ring 4 is improved through the support ring 5.

[0032] At the other end of the rotating shaft 1, an external thread 132 that is threadedly engaged with the nut 6 is provided at the end of the inner shaft portion 13 extending into the housing 2. The axial positioning of the other end of the rotating shaft 1 relative to the housing 2 is realized through the nut 6 that is threadedly engaged therewith. As Figures 2-3 shown, a limiting ring 8 is also sleeved on the outer circumference of the end of the rotating shaft close to the nut 6. The limiting ring 8 includes a large ring 81 and a small ring 82 formed as a whole. The outer diameter of the large ring 81 is larger than the outer diameter of the small ring 82. The side of the large ring close to the small ring is abutted against the end face of the housing 2 through a gasket 10. The small ring 82 extends into the housing 2 and its outer edge is abutted against the inner wall of the housing 2. Thus, the axial positioning effect of the other end of the rotating shaft 1 relative to the housing 2 is realized simultaneously in the axial and radial directions. On this basis, as a further preference, a first washer 7 is provided between the limiting ring 8 and the nut 6, and a second washer 9 is provided between the limiting ring 8 and the housing 2. Thus, the supporting stability and wear resistance between the limiting ring 8 and the nut 6, and between the limiting ring 8 and the housing 2 are further improved.

[0033] In this embodiment, as Figures 2-3As shown, on the outer periphery of the inner shaft portion 13 near the limit portion 12, an inner shaft fixing portion 131 fixedly engaged with the blade 3 is protrudingly provided, and the inner shaft fixing portion 131 is only provided at the two axial ends of the outer periphery of the inner shaft portion 13 near the limit portion 12; correspondingly, at the two axial ends of the inner wall of the blade 3, fixing grooves 31 correspondingly engaged with the inner shaft fixing portion 131 are formed; the fixing cooperation between the rotating shaft and the blade is only achieved through clamping, without the additional intervention of fixing parts, with a simple structure and convenient loading and unloading. At the same time, the inner shaft fixing portion 131 and the fixing groove 31 for corresponding clamping cooperation are only provided at the two axial ends, effectively achieving the weight reduction effect while facilitating loading and unloading.

[0034] As Figures 1-2 shown, the housing 2 in this embodiment includes a housing portion 21 and housing fixing portions 22 fixed on both sides of the housing portion 21. A plurality of fixing holes 221 are formed inside the housing fixing portions 22, and through the fixing holes 221, the damper can be installed at a required preset position.

[0035] During specific use, for example, when it is applied to the occasion of closing the refrigerator door, the door is connected to the rotating shaft, and the cabinet body is connected to the housing. When the user closes the door forcefully, the rotating shaft first rotates a free stroke relative to the housing. At this time, as the door is closed, it drives the rotating shaft 1 to continue rotating relative to the housing 2. While rotating, the blade 3 squeezes the damping oil in the cavity, causing the volume of the damping oil to decrease and the pressure to increase, thereby being subjected to the damping force of the damping oil, and this damping force increases as the rotation angle gradually increases. Thus, when applied to environments such as refrigerator doors and drawers, a corresponding damping force is provided during the closing process to slow down the possible unexpected damage to the door and drawer caused by excessive closing force.

[0036] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A damper, comprising a rotating shaft (1), the rotating shaft (1) being located inside a housing (2) and being rotatable relative to the housing (2), characterized in that: A blade (3) is fixed to the outer periphery of the rotating shaft (1) by means of a partial clamping connection, and damping oil is accommodated between the blade (3) and the inner wall of the housing (2).

2. A damper according to claim 1, characterized in that: The rotating shaft (1) comprises an outer shaft portion (11), a limiting portion (12) and an inner shaft portion (13); one end of the outer shaft portion (11) is fixedly connected to the limiting portion, and the other end extends out of the housing (2); one end of the inner shaft portion (13) is fixedly connected to the limiting portion, and the other end is located inside the housing (2).

3. A damper according to claim 2, characterized in that: The outer diameters of the outer shaft portion (11) and the limiting portion (12) are greater than the outer diameter of the inner shaft portion (13).

4. A damper according to claim 2, characterized in that: A sealing groove (121) is provided on the outer periphery of the rotating shaft (1) and at the top of the limiting portion (12), and a supporting ring (5) and a sealing ring (4) are sequentially accommodated inside the sealing groove (121) from the outside to the inside.

5. A damper according to claim 2, characterized in that: An inner shaft fixing portion (131) is protruded from the outer periphery of the inner shaft portion (13) close to the limiting portion (12) and fixedly cooperates with the blade (3), and the inner shaft fixing portion (131) is only arranged at two axial ends of the outer periphery of the inner shaft portion (13) close to the limiting portion (12).

6. A damper according to claim 2, characterized in that: The end of the inner shaft portion (13) extending into the interior of the housing (2) is provided with an external thread (132) that matches the thread of the nut (6).

7. A damper according to claim 1, characterized in that: The housing (2) comprises a housing portion (21) and housing fixing portions (22) fixed to two sides of the housing portion (21), and a plurality of fixing holes (221) are provided inside the housing fixing portions (22).

8. A damper according to claim 5, characterized in that: Axial ends of the inner wall of the blade (3) are formed with fixing grooves (31) that are correspondingly snap-fitted with the inner shaft fixing portion (131).

9. A damper according to claim 6, characterized in that: A limiting ring (8) is sleeved on the outer periphery of one end of the rotating shaft close to the nut (6); a first washer (7) is padded between the limiting ring (8) and the nut (6); and a second washer (9) is padded between the limiting ring (8) and the housing (2).

10. A damper according to claim 9, characterized in that: The limiting ring (8) comprises a large ring (81) and a small ring (82) formed as one body, the outer diameter of the large ring (81) being larger than the outer diameter of the small ring (82), the side surface of the large ring close to the small ring abutting against the end surface of the shell (2) via a gasket (10), and the small ring (82) extending into the interior of the shell (2) and having its outer edge abutting against the inner wall of the shell (2).

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