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, in particular to a damper. Background Art

[0002] A damper is a device that uses damping properties to reduce mechanical vibration and consume kinetic energy. It is often used in environments such as refrigerator doors and drawers to provide corresponding damping force during the closing process to reduce unexpected damage to the doors and drawers caused by excessive closing force.

[0003] The dampers in the prior art can adopt various forms to provide the corresponding damping force, for example, through elastic parts, damping oil and friction plates, etc., and they often only provide the corresponding damping force through radial rotational motion through elastic parts, damping oil or friction plates. This requires the internal space of the damper to be as large as possible to accommodate the corresponding elastic parts, damping oil and friction plates, so as to provide the corresponding damping force, so that the damper is limited by the structural space.

[0004] Therefore, there is an urgent need to provide a damper to solve the defects and shortcomings in the above-mentioned prior art. Summary of the invention

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

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

[0007] A damper comprises a rotating shaft and a shell which is sleeved on the outer circumference of the rotating shaft, wherein the rotating shaft can rotate relative to the shell, and is characterized in that an axial actuator is provided on the side of the rotating shaft which is located inside the shell and away from the protruding end of the rotating shaft, and an elastic member is provided inside the shell, wherein one end of the elastic member is fixedly connected to the inner wall of the shell, and the other end of the elastic member is connected to the axial actuator.

[0008] As a further preferred embodiment of the present 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 shell body; one end of the inner shaft portion is fixedly connected to the limiting portion, and the other end extends out of the shell body.

[0009] As a further preferred embodiment of the present invention, the outer diameter of the limiting portion is greater than the outer diameters of the outer shaft portion and the inner shaft portion, and the limiting portion is configured in a stepped shape that matches the inner wall of the shell.

[0010] As a further preferred embodiment of the present invention, a sealing groove is provided on the outer periphery of the limiting portion, and a sealing ring is accommodated inside the sealing groove.

[0011] As a further preferred embodiment of the present invention, an axial driving member is provided at the connection position between the limiting portion and the inner shaft portion, and a driving clamping portion is provided on the side of the axial driving member facing the axial actuator to cooperate with the axial actuator, so that the axial driving member can drive the axial actuator to rotate radially while realizing axial lifting and lowering movement.

[0012] As a further preferred embodiment of the present invention, the end of the inner shaft portion extending out of the outer side of the shell is provided with an external thread matching with the nut thread.

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

[0014] As a further preferred embodiment of the present utility model, an actuating clamping portion capable of correspondingly cooperating with the driving clamping portion is provided on one side of the axial actuating member close to the limiting portion, and a radial gap exists between the actuating clamping portion and the driving clamping portion.

[0015] As a further preferred embodiment of the present invention, the elastic member is a compression spring.

[0016] As a further preferred embodiment of the present invention, a gasket is further provided between the nut and the housing in the axial direction.

[0017] Compared with the prior art, the technical effects that can be achieved by the utility model include:

[0018] 1) The utility model provides a damper, which is provided with an axial actuator that cooperates with a rotating shaft, so that when the rotating shaft rotates, the axial actuator can be driven by the axial driving member to rotate radially and perform axial compression movement, thereby compressing the bottom elastic shape, and then providing damping force through the elastic restoring force of the elastic member, thereby providing damping force through the axial space to reduce the excessive occupation of radial space by the damper in the prior art, reduce the radial occupied space of the damper, reduce consumables and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a structural explosion diagram of the utility model.

[0021] Figure 3 It is a cross-sectional structural diagram of the utility model. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] [First embodiment]

[0026] like Figure 1-3 The figure shows a damper provided by the first embodiment of the utility model, such as Figure 1 As shown, the damper includes a rotating shaft 1 and a shell 2 which is arranged on the outer periphery of the rotating shaft 1. The rotating shaft 1 can rotate relative to the shell 2 and is subjected to a damping force after rotating to a certain stroke. The damping force increases with the gradual increase of the rotation angle. Therefore, when applied to environments such as refrigerator cabinet doors and drawers, a corresponding damping force is provided during the closing process to reduce unexpected damage to the cabinet doors and drawers caused by excessive closing force.

[0027] like Figure 2-3As 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 out of the outer side of the shell 2; one end of the inner shaft portion 13 is fixedly connected to the limiting portion, and the other end extends out of the outer side of the shell 2, and the end of the inner shaft portion 13 extending out of the outer side of the shell 2 is provided with an outer thread 132 that cooperates with the thread of the nut 5, and the axial limitation of the rotating shaft 1 inside the shell 2 can be achieved through the thread cooperation between the nut 5 and the extending end of the inner shaft portion 13; preferably, a gasket 6 is also provided between the nut 5 and the axial direction of the shell 2 to ensure good sealing and assembly effects while ensuring the threaded connection.

[0028] In this embodiment, if Figure 2-3 As shown, the outer diameter of the limiting portion 12 is greater than the outer diameters of the outer shaft portion 11 and the inner shaft portion 13, and the limiting portion 12 is arranged in a stepped shape that matches the inner wall of the shell 2, so that while achieving axial limitation, good sealing inside the shell can also be achieved; preferably, a sealing groove 121 is opened on the outer periphery of the limiting portion 12, and a sealing ring 7 is accommodated inside the sealing groove 121, so that the sealing effect on the inside of the shell 2 is further achieved through the sealing ring 7.

[0029] The outstanding contribution and improvement of this embodiment over the prior art is that: the rotating shaft 1 is located inside the housing 2 and is provided with an axial actuator 3 on one side away from the protruding end of the rotating shaft 1, and an elastic member 4 is provided inside the housing 2, one end of the elastic member 4 is fixedly connected to the inner wall of the housing 2, and the other end of the elastic member 4 is connected to the axial actuator 3; correspondingly, an axial driving member 131 is provided at the connection position between the limiting portion 12 and the inner shaft portion 13, so that the axial driving member 131 can drive the axial actuator 3 to rotate radially while realizing axial lifting and lowering movement; thereby, the axial actuator is driven by the axial driving member to rotate radially while undergoing axial compression movement, thereby compressing the bottom elastic shape, and then providing damping force through the elastic restoring force of the elastic member, thereby providing damping force through the axial space to reduce the excessive occupation of radial space by the damper in the prior art, reduce the radial occupied space of the damper, and reduce consumables and save costs. The elastic member 4 in this embodiment is preferably a compression spring for bearing axial pressure.

[0030] In order to enable the axial driving member 131 to drive the axial actuator 3 to rotate radially and realize axial lifting movement at the same time, Figure 2 As shown, the axial driving member 131 and the axial actuator 3 can be provided with mutually matching inclined surfaces respectively, and the inclined surfaces are inclined in both the radial direction and the axial direction, so that when the axial driving member 131 rotates relative to the housing, the axial actuator 3 can be driven by the inclined surface to rotate radially while achieving axial lifting and lowering motion. Those skilled in the art should know that other methods can also be used to enable the axial driving member 131 to drive the axial actuator 3 to rotate radially while achieving axial lifting and lowering motion.

[0031] In this embodiment, a driving clamping portion 1311 is provided on the side of the axial driving member 131 facing the axial actuator 3 to correspond to the axial actuator 3, and an actuating clamping portion 31 capable of correspondingly cooperating with the driving clamping portion 1311 is provided on the side of the axial actuator 3 close to the limiting portion 12, thereby realizing the clamping cooperation between the axial driving member 131 and the axial actuator 3. Those skilled in the art should know that the driving clamping portion 1311 and the actuating clamping portion 31 can be set as protrusions and grooves that are mutually clamped and matched, and all the grooves can be set on the driving clamping portion 1311, and all the protrusions can be set on the actuating clamping portion 31; all the protrusions can also be set on the driving clamping portion 1311, and all the grooves can be set on the actuating clamping portion 31; of course, both the protrusions and the grooves can also be set on the driving clamping portion 1311, and corresponding grooves and protrusions can be set on the actuating clamping portion 31, which is a conventional selection method in this field.

[0032] As a further preference, there is a radial gap between the actuating clamping portion 31 and the driving clamping portion 1311, so that a free travel can be provided for the rotational movement between the rotating shaft 1 and the housing 2, so as not to provide damping force in the early stage of the rotation and closing action.

[0033] like Figure 1-2 As shown, the housing 2 in this embodiment includes a housing portion 21 and fixing portions 22 fixed to two sides of the housing portion 21 . A plurality of fixing holes 221 are provided inside the fixing portion 22 for installing the damper at a preset position.

[0034] In specific use, for example, when it is applied to closing a refrigerator cabinet door, the cabinet door is connected to the rotating shaft, and the cabinet body is connected to the shell. When the user closes the cabinet door with force, the rotating shaft first rotates a free stroke relative to the shell to complete the radial gap between the actuating clamping part 31 and the driving clamping part 1311, until the axial driving member 131 and the axial actuating member 3 enter into engagement. At this time, as the cabinet door is closed, the rotating shaft 1 continues to rotate relative to the shell 2, and the axial driving member 131 can drive the axial actuating member 3 to rotate radially while realizing axial lifting and lowering movement; thereby, the axial driving member drives the axial actuating member to rotate radially while axially compressing the bottom elastic shape, thereby compressing the bottom elastic shape, and then providing damping force through the elastic restoring force of the elastic member, thereby slowing down the closing speed of the cabinet door, avoiding unexpected damage to the cabinet door and drawer caused by excessive closing force and excessive speed.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A damper, comprising a rotating shaft (1) and a housing (2) arranged on the outer periphery of the rotating shaft (1), wherein the rotating shaft (1) is rotatable relative to the housing (2), and characterized in that: The rotating shaft (1) is located inside the housing (2) and an axial actuating member (3) is provided on a side away from the protruding end of the rotating shaft (1). An elastic member (4) is provided inside the housing (2), one end of the elastic member (4) is fixedly connected to the inner wall of the housing (2), and the other end of the elastic member (4) is connected to the axial actuating member (3).

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 shell (2); one end of the inner shaft portion (13) is fixedly connected to the limiting portion, and the other end extends out of the shell (2).

3. A damper according to claim 2, characterized in that: The outer diameter of the limiting portion (12) is greater than the outer diameters of the outer shaft portion (11) and the inner shaft portion (13), and the limiting portion (12) is arranged in a stepped shape that matches the inner wall of the housing (2).

4. A damper according to claim 3, characterized in that: A sealing groove (121) is provided on the outer periphery of the limiting portion (12), and a sealing ring (7) is accommodated inside the sealing groove (121).

5. A damper according to claim 2, characterized in that: An axial driving member (131) is provided at the connection position between the limiting portion (12) and the inner shaft portion (13); a driving clamping portion (1311) is provided on a side of the axial driving member (131) facing the axial actuating member (3) to cooperate with the axial actuating member (3), so that the axial driving member (131) can drive the axial actuating member (3) to rotate radially and realize axial lifting and lowering movement at the same time.

6. A damper according to claim 2, characterized in that: The end portion of the inner shaft portion (13) extending out of the outer side of the housing (2) is provided with an external thread (132) that matches the thread of the nut (5).

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

8. A damper according to claim 5, characterized in that: An actuating clamping portion (31) capable of correspondingly cooperating with the driving clamping portion (1311) is provided on one side of the axial actuating member (3) close to the limiting portion (12), and a radial gap exists between the actuating clamping portion (31) and the driving clamping portion (1311).

9. A damper according to claim 5, characterized in that: The elastic member (4) is a compression spring.

10. A damper according to claim 6, characterized in that: A gasket (6) is also provided between the nut (5) and the housing (2) in the axial direction.

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