A shaft lever damping mechanism, armrest box and glove box

Abstract

The utility model discloses a kind of axle stem type damping mechanism and the application on vehicle, including fixed shaft, plastic sleeve, rotating part, first gasket and locking assembly;Fixed shaft includes fixed head and non-circular shaft portion, one end of shaft portion is connected on the first end surface of fixed head, and fixed head is used to connect fixed body;Plastic sleeve includes the cylindrical body with through-hole, through-hole is matched with shaft portion, cylindrical body includes adjacent large diameter section and small diameter section, wherein the length of large diameter section is less than the length of small diameter section;Rotating part has circular hole in center, circular hole is gaply covered on shaft portion, small diameter section of cylindrical body and recess hole interference fit, form circumferential friction face;The inner end surface of rotating part and the outer end surface of large diameter section of cylindrical body form first radial friction face;First gasket and the outer end surface of rotating part form second radial friction face, a double friction mechanism not only ensures the smooth action of rotating part in opening and closing process, also significantly improves user experience.

Description

Technical Field

[0001] This utility model relates to a damping mechanism, and more particularly to a shaft-type damping mechanism used in vehicles. Background Technology

[0002] Inside a vehicle, rotating components such as armrest covers, glove boxes, and seat armrests are used frequently. To improve the user experience, these components typically require damping mechanisms to ensure slow and smooth opening and closing, preventing noise, damage to components, or inconvenience to passengers caused by excessively rapid movements.

[0003] However, existing damping mechanisms have many problems. For example, the manual tilting device mentioned in Reference 1 (CN107386850A) uses either a spring damper or a hydraulic damper. Due to the elastic characteristics of the spring, spring dampers are prone to elastic fatigue after long-term use, leading to a weakening or even failure of the damping effect. Hydraulic dampers, on the other hand, are prone to oil leakage and are sensitive to ambient temperature. At low temperatures, the oil viscosity increases, resulting in a poorer damping effect, while at high temperatures, oil expansion may cause seal failure, leading to a shorter service life.

[0004] The novel armrest flipping structure disclosed in Document 2 (CN115593288A) solves the damping problem to some extent, but its structure is complex and bulky. Specifically, in this structure, a damping bracket is snapped into the inner wall of the upper surface of the armrest box, with two damping bushings inserted inside. The damper passes through the damping bracket and the armrest box, inserted into the damping bushings, and its surface is connected to the damping bracket by screws. This design not only increases installation difficulty but also occupies a significant amount of space, hindering the optimal utilization of vehicle interior space. Furthermore, the complex structure also implies higher manufacturing costs and a higher failure rate. Utility Model Content

[0005] The technical problem to be solved by this invention is to provide a shaft-type damping mechanism that is small in size, easy to install, and has a long service life. This damping mechanism has both radial and circumferential friction, which makes it have a more stable damping effect.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is: a shaft-type damping mechanism, including a fixed shaft, a plastic sleeve, a rotating part, a first washer and a locking assembly;

[0007] The fixed shaft includes a fixed head and a non-circular shaft portion. One end of the shaft portion is connected to the first end face of the fixed head, and the fixed head is used to connect to the fixed body.

[0008] The plastic sleeve, rotating part, and gasket are sequentially fitted onto the shaft from the inside out and fastened to the shaft by the locking assembly.

[0009] The plastic sleeve includes a cylindrical body with a through hole that matches the shaft portion. The cylindrical body includes adjacent large-diameter segments and small-diameter segments, wherein the length of the large-diameter segment is less than the length of the small-diameter segment.

[0010] The rotating component has a circular hole at its center, which is fitted onto the shaft with a gap, and the rotating component is fixedly connected to the outer circumferential surface of the rotating component.

[0011] The rotating component has a recessed hole on its inner side, and the small-diameter section of the cylindrical body is interference-fitted with the recessed hole to form a circumferential friction surface; the inner end face of the rotating component and the outer end face of the large-diameter section of the cylindrical body form a first radial friction surface.

[0012] The first pad and the outer end face of the rotating component form a second radial friction surface.

[0013] A further preferred embodiment of this utility model is: the fixed head has two limiting planes on its outer periphery; the rotating component is hexagonal on its outer periphery.

[0014] A further preferred embodiment of this utility model is as follows: the locking assembly includes a first spring, a second spring, a second washer, and a locking nut, wherein the through holes of the first spring, the second spring, and the second washer are engaged with the shaft portion, and the locking nut is screwed onto the threaded section of the shaft portion.

[0015] A further preferred embodiment of this utility model is as follows: the outer surface of the first gasket is provided with numerous recessed holes; the first spring and the second spring are bowl-shaped and symmetrically arranged.

[0016] Another technical subject: a shaft-type damping mechanism, comprising a fixed shaft, a plastic sleeve, a rotating component, and a locking assembly;

[0017] The fixed shaft includes a fixed head and a non-circular shaft portion. One end of the shaft portion is connected to the first end face of the fixed head, and the fixed head is used to connect to the fixed body.

[0018] The plastic sleeve and the rotating part are sequentially sleeved on the shaft from the inside to the outside, and are fastened to the shaft by the locking assembly;

[0019] The plastic sleeve includes a cylindrical body with a through hole that matches the shaft portion. The cylindrical body includes adjacent large-diameter segments and small-diameter segments, wherein the length of the large-diameter segment is less than the length of the small-diameter segment.

[0020] The rotating component has a circular hole at its center, which is fitted onto the shaft with a gap, and the rotating component is fixedly connected to the outer circumferential surface of the rotating component.

[0021] The rotating component has a recessed hole on its inner side, and the small-diameter section of the cylindrical body is interference-fitted with the recessed hole to form a circumferential friction surface; the inner end face of the rotating component and the outer end face of the large-diameter section of the cylindrical body form a first radial friction surface.

[0022] A further preferred embodiment of this utility model is that the fixing head has two limiting planes on its outer periphery.

[0023] The outer periphery of the rotating component is hexagonal.

[0024] A further preferred embodiment of this utility model is as follows: the locking assembly includes a first spring, a second spring, a second washer, and a locking nut, wherein the through holes of the first spring, the second spring, and the second washer are engaged with the shaft portion, and the locking nut is screwed onto the threaded section of the shaft portion.

[0025] A further preferred embodiment of this utility model is that the first spring and the second spring are bowl-shaped and symmetrically arranged.

[0026] Another subject: armrest box, including a box body and an armrest cover; the armrest cover is connected to a first side of the box body via a rotating shaft, and the armrest cover is connected to a second side of the box body via the shaft-type damping mechanism.

[0027] Another subject: a glove box, characterized in that it comprises a box body and a box lid, the box lid being connected to a first side of the box body via a rotating shaft, and the box lid being connected to a second side of the box body via the shaft-type damping mechanism.

[0028] Compared with existing technologies, the advantages of this invention are: the damping mechanism employs a unique dual friction mechanism, including circumferential and radial friction. The concave hole on the inner side of the rotating component and the small-diameter section of the plastic sleeve are interference-fitted, forming a stable circumferential friction surface, effectively suppressing the rapid rotation of the rotating component and avoiding impact and noise caused by excessively fast movements. Simultaneously, the radial friction surface formed by the inner end face of the rotating component and the outer end face of the large-diameter section of the plastic sleeve, as well as the second radial friction surface formed by the first washer and the outer end face of the rotating component, further enhance the stability and reliability of the damping effect. This dual friction mechanism not only ensures smooth operation of the rotating component during opening and closing but also significantly improves the user experience, making operation more comfortable and quieter.

[0029] Furthermore, the shaft-type damping mechanism in this technical solution achieves extremely high space utilization efficiency through a specific structural design. The tight fit between the non-circular shaft portion of the fixed shaft and components such as the plastic sleeve and rotating parts significantly optimizes the overall size of the damping mechanism. This compact structure not only saves valuable space inside the vehicle but also provides greater flexibility for vehicle interior design. For example, in applications such as the armrest box and glove box, this damping mechanism can be perfectly integrated into limited spaces without affecting the layout and function of other components, thereby enhancing the overall design and practicality of the vehicle interior.

[0030] Furthermore, the shaft-type damping mechanism considers long-term reliability in both material selection and structure. The mating design of the plastic sleeve and rotating parts avoids the performance degradation problems caused by fatigue or leakage in traditional spring or hydraulic dampers. Through precise interference fits and clearance matching, each component can maintain stable performance during long-term use, reducing the risk of failure due to wear or aging. In addition, the design of the locking assembly further enhances the connection stability between components, ensuring long-term reliable operation of the damping mechanism under various working conditions. This long-life and high-reliability design not only reduces vehicle maintenance costs but also improves the overall quality of the vehicle and user satisfaction. Attached Figure Description

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0032] Figure 1 A schematic diagram of a damping mechanism used on a housing. Figure 1 ;

[0033] Figure 2 A schematic diagram of a damping mechanism used on a housing. Figure 2 ;

[0034] Figure 3 Side section view of the damping mechanism used in the housing Figure 1 ;

[0035] Figure 4 Side section view of the damping mechanism used in the housing Figure 2 ;

[0036] Figure 5 This is a schematic diagram of the overall structure of the damping mechanism in this embodiment;

[0037] Figure 6This is a structural disassembly diagram of the damping mechanism in this embodiment;

[0038] Figure 7 This is a schematic diagram of the overall structure of the rotating component in this embodiment;

[0039] Figure 8 This is a schematic diagram of the overall structure of the plastic sleeve in this embodiment. Detailed Implementation

[0040] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0041] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it will not be further defined and explained in subsequent figures.

[0042] like Figure 1 and Figure 2 As shown, the shaft-type damping mechanism 100 of this invention is particularly suitable for armrest boxes inside vehicles. The armrest box mainly consists of a box body (i.e., the fixed body 101) and an armrest cover (i.e., the flip-up component 102). Structurally, the armrest cover is connected to the first side of the box body via a conventional rotating shaft 104, which ensures the basic rotational function of the armrest cover. However, to achieve a smoother, quieter, and more reliable opening and closing action, the armrest cover is connected to the second side of the box body via the shaft-type damping mechanism 100 of this invention.

[0043] The damping mechanism 100 of this embodiment, when connected, can not only effectively avoid the impact and noise caused by the rapid opening or closing of the armrest cover, but also significantly improve the user experience, making the use of the armrest cover more comfortable and convenient. In addition, the shaft-type damping mechanism 100 of this embodiment has a compact structure and small size, which can be perfectly integrated into the vehicle's interior space without occupying additional valuable space. At the same time, its installation process is simple and quick, further reducing the cost of vehicle manufacturing and maintenance.

[0044] Besides the armrest box, the shaft-type damping mechanism 100 of this embodiment is also applicable to the glove box in an automobile. The structure of the glove box is similar to that of the armrest box, including a box body (i.e., the fixed body 101) and a box lid (i.e., the flip-up component 102). Similarly, the box lid is connected to the first side of the box body via a rotating shaft 104 to achieve basic rotation function. To further improve the user experience of the glove box, the box lid is connected to the second side of the box body via the shaft-type damping mechanism 100 of this utility model.

[0045] Through the aforementioned technical means, the glove box lid can achieve slow and smooth opening and closing, effectively avoiding impacts and noise caused by rapid movements. It also reduces wear on the lid and body, extending the glove box's service life. Overall, the shaft-type damping mechanism 100 of this embodiment not only provides a stable damping effect for the glove box but also achieves efficient space utilization within the limited interior space of a vehicle. Its simple installation method also makes the manufacturing and maintenance of the glove box more convenient and economical.

[0046] It should be noted that the shaft-type damping mechanism 100 of this utility model adopts a unique dual-friction design, possessing both radial and circumferential friction, thereby significantly improving the stability and reliability of the damping effect. The core of this design lies in ensuring the smoothness and consistency of the rotating components during opening and closing through the synergistic action of multiple friction mechanisms. The specific technical solution will be described below:

[0047] like Figure 5 and Figure 6 As shown, the shaft-type damping mechanism 100 of this embodiment is an innovative mechanical device specifically designed for rotating components such as armrest boxes and glove boxes inside vehicles to achieve smooth and quiet opening and closing actions. This damping mechanism consists of several key components: a fixed shaft 10, a plastic sleeve 20, a rotating component 30, a first washer 40, and a locking assembly 50. These components work together to ensure the efficient operation and long-term stability of the damping mechanism.

[0048] The fixed shaft 10 is one of the core components of the damping mechanism, and it includes a fixed head 11 and a non-circular shaft portion 12. One end of the shaft portion 12 is securely connected to the first end face 111 of the fixed head 11. The fixed head 11 is designed to connect with the fixed body 101 of a target object (such as the body of a center console or glove box), thereby ensuring the stable installation of the damping mechanism inside the vehicle. This non-circular shaft design not only provides structural stability but also provides a precise mating basis for the installation of other components.

[0049] The plastic sleeve 20 and the rotating component 30 are key components for achieving the damping function. The plastic sleeve 20 includes a cylindrical body 21 with a through hole 22, the through hole 22 of which matches the shape and size of the shaft portion 12 to ensure a tight fit between the two. The cylindrical body 21 consists of adjacent large-diameter segments 211 and small-diameter segments 212, wherein the length of the large-diameter segment 211 is less than the length of the small-diameter segment 212. This design provides different frictional contact surfaces for the damping mechanism.

[0050] The rotating component 30 has a central circular hole 31 that fits loosely onto the shaft 12. This clearance allows the rotating component to rotate freely on the shaft without causing excessive wobbling. The outer circumferential surface of the rotating component 30 is used to fix the flip-up component 102 of the target object (such as an armrest cover or glove box cover), thereby transferring the function of the damping mechanism to the actual use component.

[0051] It should be noted that the damping mechanism in this embodiment achieves a stable damping effect through a specific friction surface. For example... Figure 7 and Figure 8 As shown, the inner side of the rotating component 30 has a recess 32, and the small-diameter section 212 of the plastic sleeve 20 is in close contact with the recess 32 through an interference fit to form a circumferential friction surface s3. This circumferential friction surface s3 provides a stable damping force when the rotating component 30 rotates around the shaft 12, effectively suppressing the rotation speed and avoiding impact and noise caused by rapid rotation.

[0052] In addition, such as Figure 3 and Figure 4 As shown, the inner end face of the rotating component 30 is in close contact with the outer end face of the large-diameter section 211 of the plastic sleeve 20, forming a first radial friction surface s1. The first gasket 40 is in contact with the outer end face of the rotating component 30, forming a second radial friction surface s2. These two radial friction surfaces further enhance the stability and reliability of the damping effect, ensuring that the rotating component 30 maintains smooth operation during opening and closing.

[0053] The locking assembly 50 is an important component of the damping mechanism, comprising a first spring 51, a second spring 52, a second washer 53, and a locking nut 54. These components mate with the shaft 12 through their through holes, and the locking nut 54 is screwed onto the threaded section of the shaft 12, thereby securely fastening the plastic sleeve 20, the rotating component 30, and the first washer 40 to the shaft 12. This locking technique not only ensures the stability of each component during use but also facilitates installation and maintenance, further enhancing the practicality and reliability of the damping mechanism.

[0054] This utility model's shaft-type damping mechanism 100 achieves a smooth, quiet, and reliable damping effect through its unique structural distribution and dual friction mechanism. This mechanism is not only suitable for components such as armrests and glove boxes inside vehicles, but also maintains stable performance under various operating conditions. Its compact structure, simple installation method, and long service life make it an ideal choice for connecting internal vehicle components.

[0055] like Figure 6As shown, the fixing head 11 has two upward-facing limiting planes 112 on its outer periphery. This unique design not only enhances the structural stability of the fixing head 11 but also provides precise positioning during installation. The limiting planes 112 ensure that the fixing head 11 maintains the correct orientation and position when connected to a target object (such as the body of a handrail box or glove box), thereby improving the accuracy and reliability of installation. Furthermore, this design effectively prevents unnecessary rotation or movement of the fixing head 11 during use, further enhancing the overall stability of the damping mechanism.

[0056] The rotating component 30 is designed with a hexagonal structure on its outer periphery. This hexagonal design not only provides sufficient mechanical strength but also facilitates installation and disassembly by allowing it to be used with external tools (such as wrenches). The hexagonal structure enables the rotating component 30 to maintain stable performance even under large torques, while its symmetry also helps ensure that the rotating component 30 remains balanced during rotation, further improving the smooth operation of the damping mechanism.

[0057] The locking assembly 50 is an important component of the shaft-type damping mechanism 100 of this utility model, and its technical means are designed to ensure the firmness and stability of each component during use. The locking assembly 50 includes a first spring 51, a second spring 52, a second washer 53, and a locking nut 54. These components cooperate with the shaft 12 through their through holes, and the locking nut 54 is screwed onto the threaded section of the shaft 12, thereby firmly securing the plastic sleeve 20, the rotating part 30, and the first washer 40 to the shaft 12.

[0058] Preferably, the first spring clip 51 and the second spring clip 52 are both bowl-shaped structures and are symmetrically arranged. This design not only provides uniform elastic support but also disperses stress during the locking process, preventing damage to components due to localized stress concentration. The bowl-shaped spring clip design can also compensate for minor errors during installation to a certain extent, ensuring a tight fit between the components.

[0059] The design of the second gasket 53 further enhances the stability and reliability of the locking assembly. It not only provides additional support but also acts as a buffer during locking, reducing the impact of vibration and shock on the components.

[0060] The locking nut 54 is screwed onto the threaded section of the shaft 12, ensuring a tight connection between all components during use through precise thread engagement.

[0061] The locking assembly 50 includes a first spring 51, a second spring 52, a second washer 53, and a locking nut 54. The through holes of the first spring 51, the second spring 52, and the second washer 53 are all engaged with the shaft portion 12, and the locking nut 54 is screwed onto the threaded section of the shaft portion 12.

[0062] like Figure 7 As shown, the outer surface of the first gasket 40 is designed with numerous recesses 41. This recessed design not only increases the friction coefficient of the first gasket 40 but also provides better heat dissipation during radial friction. The presence of the recesses 41 allows the first gasket 40 to distribute pressure more evenly when in contact with the rotating component 30, thereby improving the stability and reliability of the radial friction surface s2. In addition, this design can also reduce the direct contact area between the gasket and the rotating component to a certain extent, reducing the wear rate and extending the service life of the component.

[0063] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do 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, they should not be construed as limitations on this utility model. Similarly, "first" and "second" are only for ease of understanding and have no other directional meaning, and cannot be considered as limitations on this utility model.

[0064] This paper introduces a shaft-type damping mechanism, a handrail box, and a glove box provided by this utility model. Specific examples are used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand this utility model and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A shaft-type damping mechanism, characterized in that: Includes a fixed shaft, a plastic sleeve, a rotating component, a first washer, and a locking assembly; The fixed shaft includes a fixed head and a non-circular shaft portion, one end of which is connected to the first end face of the fixed head. The fixed head is used to connect to the fixed body. The plastic sleeve, rotating part, and gasket are sequentially fitted onto the shaft from the inside out and fastened onto the shaft by a locking assembly. The plastic sleeve includes a cylindrical body with a through hole that matches the shaft portion. The cylindrical body includes adjacent large-diameter segments and small-diameter segments, wherein the length of the large-diameter segment is less than the length of the small-diameter segment. The rotating component has a circular hole at its center, which is fitted onto the shaft with a gap, and the rotating component is fixedly connected to the outer circumferential surface of the rotating component; The rotating component has a recessed hole on its inner side, and the small-diameter section of the cylindrical body is interference-fitted with the recessed hole to form a circumferential friction surface; the inner end face of the rotating component and the outer end face of the large-diameter section of the cylindrical body form a first radial friction surface. The first gasket and the outer end face of the rotating component form a second radial friction surface.

2. The shaft-type damping mechanism according to claim 1, characterized in that: The fixed head has two limiting planes on its outer periphery; The outer periphery of the rotating component is hexagonal.

3. The shaft-type damping mechanism according to claim 1, characterized in that: The locking assembly includes a first spring, a second spring, a second washer, and a locking nut. The through holes of the first spring, the second spring, and the second washer mate with the shaft portion, and the locking nut is screwed onto the threaded section of the shaft portion.

4. The shaft-type damping mechanism according to claim 3, characterized in that: The outer surface of the first gasket is provided with numerous recesses; The first spring and the second spring are bowl-shaped and arranged symmetrically.

5. A shaft-type damping mechanism, characterized in that: Includes a fixed shaft, plastic sleeve, rotating parts, and locking assembly; The fixed shaft includes a fixed head and a non-circular shaft portion, one end of which is connected to the first end face of the fixed head. The fixed head is used to connect to the fixed body. The plastic sleeve and the rotating part are sequentially fitted onto the shaft from the inside to the outside, and are fastened onto the shaft by the locking assembly; The plastic sleeve includes a cylindrical body with a through hole that matches the shaft portion. The cylindrical body includes adjacent large-diameter segments and small-diameter segments, wherein the length of the large-diameter segment is less than the length of the small-diameter segment. The rotating component has a circular hole at its center, which is fitted onto the shaft with a gap, and the rotating component is fixedly connected to the outer circumferential surface of the rotating component; The rotating component has a recessed hole on its inner side, and the small-diameter section of the cylindrical body is interference-fitted with the recessed hole to form a circumferential friction surface; the inner end face of the rotating component and the outer end face of the large-diameter section of the cylindrical body form a first radial friction surface.

6. The shaft-type damping mechanism according to claim 5, characterized in that: The fixed head has two limiting planes on its outer periphery; The outer periphery of the rotating component is hexagonal.

7. The shaft-type damping mechanism according to claim 5, characterized in that: The locking assembly includes a first spring, a second spring, a second washer, and a locking nut. The through holes of the first spring, the second spring, and the second washer mate with the shaft portion, and the locking nut is screwed onto the threaded section of the shaft portion.

8. The shaft-type damping mechanism according to claim 7, characterized in that: The first spring and the second spring are bowl-shaped and arranged symmetrically.

9. Armrest box, characterized in that It includes a housing and an armrest cover; the armrest cover is connected to a first side of the housing via a rotating shaft, and the armrest cover is connected to a second side of the housing via a shaft-type damping mechanism as described in any one of claims 1-8.

10. A glove box, characterized in that... It includes a box body and a box cover, wherein the box cover is connected to a first side of the box body via a rotating shaft, and the box cover is connected to a second side of the box body via a shaft-type damping mechanism as described in any one of claims 1-8.

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