A cylindrical bidirectional damping mechanism

Abstract

This utility model discloses a cylindrical bidirectional damping mechanism, including a housing and a rotor with rotational damping disposed within the housing. The rotor has a rotating shaft completely housed within the housing, and a damping block extending towards a first wall surface is disposed on the rotating shaft, with a small gap between the damping block and the first wall surface. The intermittent oil passage structure avoids air bubbles remaining during oil injection; the damping force can be changed by controlling the gap size, offering strong versatility; the hinged structure at the distal end ensures coaxiality and smoothness during shaft rotation; and the bidirectional damping design allows for the use of parts on both sides.

Description

Technical Field

[0001] This utility model relates to the field of rotary dampers, and in particular to a cylindrical bidirectional damping mechanism. Background Technology

[0002] Chinese invention patent publication number CN116122687A discloses a unidirectional high-torque damper and its application. This damper generates damping force by passing oil through damping holes on the shaft. However, due to the hole structure, air bubbles are easily trapped during oil filling, which affects the damping value of this small damper and reduces its stability. On the other hand, the shaft is hinged to one end of the housing, and prolonged use can easily lead to wear due to concentrated stress points, affecting the smoothness of the mechanism's rotation. Utility Model Content

[0003] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0004] A cylindrical bidirectional damping mechanism includes a housing and a rotor with rotational damping disposed within the housing. The rotor has a rotating shaft that is completely housed within the housing. A damping block is disposed on the rotating shaft, extending toward a first wall and rotating with the rotating shaft. When the damping block rotates, it obtains damping force through a small gap between itself and the first wall.

[0005] Furthermore, a cavity for containing damping fluid is provided between the rotating shaft and the first wall surface, and the cavity is divided by the damping block into a first cavity and a second cavity that are connected to each other through the gap.

[0006] Furthermore, it also includes a second wall surface that engages with the pivot.

[0007] Furthermore, the shaft is hinged to rotate via a first end and a second end, which are located at two different ends of the housing.

[0008] Furthermore, the rotor has a rotating head coaxially fixed at the top of the rotating shaft, and the rotating head rotates synchronously with the rotating shaft.

[0009] Furthermore, it also includes a first sealing member that forms a seal at the first end, the first sealing member achieving a seal between the rotor, the shaft and the housing.

[0010] Furthermore, it also includes a second sealing member that forms a seal at the second end, the second sealing member achieving a seal between the rotating shaft and the housing.

[0011] The beneficial effects of this utility model are as follows:

[0012] The present invention provides a cylindrical bidirectional damping mechanism with an intermittent oil passage structure to avoid air bubbles remaining during oil injection; the damping force can be changed by controlling the size of the gap, and it has strong versatility; the hinge structure at the far end ensures the coaxiality and smoothness of the rotating shaft during rotation; and the bidirectional damping design can also realize the use of parts on both sides. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is an overall schematic diagram of the present invention.

[0015] Figure 2 yes Figure 1 Exploded view.

[0016] Figure 3 yes Figure 1 AA sectional view.

[0017] Figure 4 yes Figure 1 BB cross-sectional view.

[0018] Figure 5 yes Figure 1 CC section view. Detailed Implementation

[0019] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. The above description is for the purpose of simplifying the description of this utility model and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0020] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items.

[0021] When a component is described in the specification as being "on", "fixed" to, "connected" to, or "joined" to another component, the component may be directly located on, fixed to, connected to, joined to, or in contact with the other component, or there may be an intermediate component present.

[0022] It is understood that although the terms "first," "second," etc., may be used herein to describe different elements, these elements should not be limited by these terms. These terms are merely used to distinguish one element from another. Therefore, a first element may be referred to as a second element without departing from the teachings of this application.

[0023] Exemplary embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that this application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments. Throughout the drawings, the same reference numerals denote the same or functionally identical elements.

[0024] Figure 1 and Figure 2 The overall structure of this cylindrical rotary damper is shown, mainly including a rotor 200 for connection with external transmission components such as armrests and cup holders, and a housing 100 for fixing the rotor 200. The rotor 200 includes a rotating shaft 220 integrally housed within the housing 100 and a rotating head 210 disposed on top of the rotating shaft 220 and rotating synchronously with it on the same axis. The first end 223 and the second end 224 are two ends on opposite sides of the rotating shaft 220, and the rotating shaft 220 rotates by engaging with the housing 100 through the first end 223 and the second end 224. The side surface 221 of the rotating shaft 220 is basically an arcuate circumferential surface arranged around the axis, and a cavity 103 for filling damping fluid is formed between the side surface 221 and the first wall surface 101 of the housing 100. A radially protruding damping block 222 is provided on the side surface 221.

[0025] Reference Figures 3 to 5 The damping block 222 divides the cavity 103 into a first cavity 103a and a second cavity 103b. A small gap 104 exists between the damping block 222 and the first wall surface 101, connecting the first cavity 103a and the second cavity 103b. When the rotating shaft 220 rotates clockwise or counterclockwise under the drive of the rotating head 210, the damping block 222 moves within the cavity 103. The volumes of the first cavity 103a and the second cavity 103b change with the movement of the damping block 222. The damping fluid flows through the gap 104 between the first cavity 103a and the second cavity 103b, generating eddies that resist the damping block 222, thus creating a damping effect. The damping value can be changed by controlling the width of the gap 104.

[0026] In some embodiments, the rotating shaft 220 seals the first end 223 with the rotating head 210 and one end of the housing 100 through the first seal 221, and seals the second end 224 with the other end of the housing 100 through the second seal 212.

[0027] In some embodiments, a second wall surface 102 is also included, which together with the first wall surface 101 forms a complete wall surface inside the housing 100.

[0028] This damper structure avoids the damping hole structure in conventional damper designs. Its intermittent oil passage structure effectively prevents air bubbles from remaining in the cavity 103 during assembly, preventing excess gas from being trapped inside and affecting the damping force. Furthermore, the rotational hinge of the shaft 220 receives force close to both ends of the housing 100, resulting in high coaxiality and smoother movement. In addition, this damper can generate damping in both clockwise and counterclockwise directions, allowing for use on both sides of the component. The damping force can be adjusted by changing the height of the damping block 222 to control the size of the gap 104. For different resistance requirements, only the shaft 220 needs to be replaced, increasing the product's versatility.

Claims

1. A cylinder type bidirectional damping mechanism comprising a housing and a rotor provided in the housing with rotational damping, characterized by, The rotor has a rotating shaft that is completely housed within the housing. A damping block is provided on the rotating shaft, extending toward the first wall and rotating with the rotating shaft. When the damping block rotates, it obtains damping force through a small gap between itself and the first wall.

2. A double acting cylinder damper mechanism as claimed in claim 1, wherein, A cavity for containing damping fluid is provided between the rotating shaft and the first wall surface. The cavity is divided by the damping block into a first cavity and a second cavity that are connected to each other through the gap.

3. A double acting cylinder damper mechanism as claimed in claim 2, wherein, It also includes a second wall surface that engages with the pivot.

4. A double acting cylinder according to any one of claims 1 to 3, wherein The shaft is hinged to rotate at a first end and a second end, which are located at two different ends on the housing.

5. A double acting cylinder damper mechanism as claimed in claim 4, wherein, The rotor has a rotating head fixed coaxially to the top of the rotating shaft, and the rotating head rotates synchronously with the rotating shaft.

6. A double acting cylinder damper mechanism as claimed in claim 5, wherein, It also includes a first sealing member that forms a seal at the first end, the first sealing member achieving a seal between the rotor, the shaft and the housing.

7. A double acting cylinder damper mechanism as claimed in claim 5 wherein, It also includes a second sealing member that forms a seal at the second end, the second sealing member achieving a seal between the rotating shaft and the housing.

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