A sliding member

Abstract

The utility model belongs to mechanical sliding fit structure technical field especially relates to a kind of sliding components, including the first sliding surface of first component and the second sliding surface of second component, first sliding surface can be partially covered in the second sliding surface surface, first sliding surface and second sliding surface can be relatively slid, the gap that is communicated with external environment is formed between first sliding surface and second sliding surface, the height of gap is 0.1-50mm, first sliding surface, second sliding surface selectively set up wear-resistant part of flocking, the natural height of wear-resistant part of flocking is greater than the height of the gap, the compression height of wear-resistant part of flocking is equal to the height of gap, wear-resistant part of flocking includes flocking adhesive layer and fiber velvet layer.The structure effectively reduces the total thickness of wear-resistant part, can adapt to high-precision gap demand, improve the compactness of sliding interface cooperation, reduce sliding damping to avoid jam, improve sliding smoothness, adhere to actual use demand.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical sliding fit structure technology, and particularly relates to a sliding component. Background Technology

[0002] In various mechanical components that require relative sliding, hard friction is easily generated when the components slide against each other. Therefore, existing technologies often solve this problem by setting a soft friction layer on the inner wall of the interface of one of the components.

[0003] The traditional method for preparing this soft friction layer is as follows: using fabric, plastic sheet, etc. as the substrate, flocking fibers of nylon, polyester, etc. are planted on the surface of the substrate with flocking adhesive, and then the substrate with flocking fibers is glued to the mechanical sliding interface to finally form a soft friction layer (i.e., wear-resistant part or wear-resistant strip).

[0004] However, traditional soft friction layers have obvious limitations: First, the substrate is mostly made of low-elasticity or non-elasticity materials and needs to have a certain thickness. The superimposed flocking adhesive layer to fix the flock and the adhesive layer to adhere the substrate to the component result in a large total thickness of the soft friction layer, which limits the tightness of the fit between the mechanical sliding interfaces. Second, the fixed thickness and hardness of the two adhesive layers can easily generate large damping when the component slides, causing the component to get stuck when sliding relative to each other. Utility Model Content

[0005] The purpose of this invention is to provide a sliding component that has the advantages of low processing cost, good wear resistance, and low damping during sliding.

[0006] To achieve the above objectives, this utility model provides a sliding component, including a first sliding surface of a first component and a second sliding surface of a second component. The first sliding surface can partially cover the surface of the second sliding surface. The first sliding surface and the second sliding surface can slide relative to each other. A gap communicating with the external environment is formed between the first sliding surface and the second sliding surface. The height of the gap is 0.1-50mm. The first sliding surface and the second sliding surface are selectively provided with flocked wear-resistant parts. The natural height of the flocked wear-resistant parts is greater than the height of the gap. The compression height of the flocked wear-resistant parts is equal to the height of the gap. The flocked wear-resistant parts include a flocking adhesive layer and a fiber pile layer.

[0007] Furthermore, both the first and second sliding surfaces are planar, allowing the first and second components to slide horizontally together.

[0008] Furthermore, the first sliding surface is a plane or an arc-shaped surface, and the second sliding surface is a plane or an arc-shaped surface, and the first component and the second component rotate relative to each other.

[0009] Furthermore, the flocked wear-resistant part is disposed on either the first sliding surface or the second sliding surface.

[0010] Furthermore, the flocked wear-resistant part is simultaneously disposed on both the first sliding surface and the second sliding surface.

[0011] Furthermore, the first component is a mobile phone mid-frame and there are two of them, the second component is a hinge cover plate, the two mobile phone mid-frames are respectively connected to the hinge cover plate through hinges and realize relative flipping and sliding, and the flocked wear-resistant part is set on the inner wall of the mobile phone mid-frame.

[0012] Furthermore, the first component is a ball seat, the second component is a ball head, the flocked wear-resistant part is disposed on the inner wall of the ball seat, and the ball head can rotate on the inner wall of the ball seat.

[0013] Furthermore, the first component consists of two hinges, the second component is a cylindrical shaft, the second sliding surface is the outer circular surface of the cylindrical shaft, the first sliding surface of the hinge is the contact surface that contacts the outer circular surface, the flocked wear-resistant part is disposed on the contact surface, and the hinge rotates along the cylindrical shaft.

[0014] Furthermore, the first component is a sleeve, the second component is a telescopic rod, the flocked wear-resistant part is disposed on the inner wall of the sleeve, and the telescopic rod can rotate or extend along the inner wall of the sleeve.

[0015] Furthermore, the fiber pile thickness of the flocked wear-resistant part is 0.6D-100D; the thickness of the flocking adhesive layer of the flocked wear-resistant part is 0.1-3mm; and the natural height of the fiber pile layer of the flocked wear-resistant part is 0.2-60mm.

[0016] The sliding member provided by this utility model embodiment has at least one of the following technical effects: 1. Simplify the structure of the wear-resistant part to reduce the total thickness and improve the compactness of the sliding interface: The flocked wear-resistant part of this utility model consists of only two layers: a flocked adhesive layer and a fiber fluff layer. It does not require the use of a plastic substrate or an additional adhesive layer between the substrate and the component, and can meet the requirements of high precision gaps. 2. Reduce sliding damping, avoid jamming, and improve sliding smoothness: In the prior art, the soft friction layer has high substrate rigidity and high adhesive layer hardness, resulting in large damping when the component rotates and slides, causing the component to jam. In this utility model, the fiber pile layer of the flocked wear-resistant part has elastic deformation capability, and the fiber pile layer can be compressed to a height that matches the gap during sliding. The contact between the elastic pile and the rigid substrate and hard adhesive layer in the prior art is replaced by contact between the rigid substrate and the hard adhesive layer, thereby reducing sliding damping. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an anatomical diagram of a sliding component provided in Embodiment 1 of this utility model.

[0019] Figure 2 This is a schematic diagram of the flocked abrasion-resistant part.

[0020] Figure 3 This is a schematic diagram of a folding phone according to Embodiment 2 of this utility model.

[0021] Figure 4 for Figure 3 A magnified view of a portion at point A.

[0022] Figure 5 This is a schematic diagram of Embodiment 3 of the present invention.

[0023] Figure 6 for Figure 5 A partial cross-sectional view of point B.

[0024] Figure 7 This is a schematic diagram of Embodiment 4 of the present invention.

[0025] Figure 8 for Figure 7 A cross-sectional diagram.

[0026] Figure 9 This is a schematic diagram of Embodiment 5 of the present invention.

[0027] Figure 10 for Figure 9 A cross-sectional diagram.

[0028] The following are the labeling elements in the figure: 1 First component, 11 First sliding surface, 2 Second component, 21 Second sliding surface, 3 Gap, 4 Flocked wear-resistant part, 5 Flocked adhesive layer, 6 Fiber fluff layer. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0030] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of 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.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0033] like Figure 1-2 As shown, in one embodiment of this utility model, a sliding member is provided, including a first sliding surface 11 of a first component 1 and a second sliding surface 21 of a second component 2; wherein the first sliding surface 11 can partially cover the surface of the second sliding surface 21, and the two can slide relative to each other. A gap 3 communicating with the external environment is formed between the first sliding surface 11 and the second sliding surface 21. As the first component 1 and the second component 2 slide relative to each other, the gap 3 communicating with the external environment can drive the orderly flow of air. During sliding, the air is squeezed out, forming an airflow barrier to prevent dust intrusion and also to avoid negative pressure sucking in foreign objects.

[0034] Specifically, gap 3 is the necessary clearance that must be maintained when two sliding surfaces slide relative to each other, and its height ranges from 0.1 to 50 mm. In practical applications, the height of gap 3 can be adjusted according to the needs of the scenario: for example, a height of 0.1-0.4 mm is suitable for some high-precision products such as foldable screen phones and foldable cameras, meeting their minimum clearance requirements; a height of 0.5-1 mm is suitable for relatively large products such as laptops and foldable tablets; in addition, it can be set to 1-10 mm for general scenarios, or 10-50 mm for high-stress scenarios such as hinges and sleeves. By adjusting the height of gap 3, this sliding component can cover various application scenarios such as electronic devices, hardware parts, and support structures.

[0035] The first sliding surface 11 and the second sliding surface 21 can be selectively provided with flocked wear-resistant parts 4. That is, the flocked wear-resistant parts 4 can be provided only on either the first sliding surface 11 or the second sliding surface 21, or they can be provided on both sliding surfaces simultaneously. The flocked wear-resistant parts 4 consist of two parts: one is a flocked adhesive layer 5 with a thickness of 0.1-3mm, and the other is a fiber pile layer 6 with a natural height of 0.2-60mm and a pile thickness of 0.6D-60D. The unit of pile thickness is denier (D), and the following conditions must be met: the natural height of the fiber pile layer 6 is greater than the height of the gap 3, and the compressed height of the fiber pile layer 6 is equal to the height of the gap 3. When the first sliding surface 11 slides along the second sliding surface 21, the second sliding surface 21 contacts the fiber pile layer 6 of the flocked wear-resistant parts 4, and the fiber pile layer 6 will be compressed synchronously to the same height as the gap 3. This not only avoids hard friction when the components slide relative to each other, achieving a wear-resistant effect, but also fills the gap 3 to achieve a dustproof purpose.

[0036] The thickness of the flocking adhesive layer 5 can be flexibly selected according to the scenario: a thin adhesive layer with a thickness of 0.1-1mm is suitable for thin scenarios such as electronic devices; a medium-thick adhesive layer with a thickness of 1-3mm is suitable for scenarios with high adhesion requirements such as hardware parts and support structures.

[0037] The preferred relative sliding modes of the sliding member are as follows: Planar horizontal sliding: Both the first sliding surface 11 and the second sliding surface 21 are planar, and the first component 1 and the second component 2 slide relative to each other in the horizontal direction; Rotational relative sliding: The first sliding surface 11 can be a plane or an arc surface, and the second sliding surface 21 can also be a plane or an arc surface (the two sliding surfaces can have the same or different shapes). The first component 1 and the second component 2 achieve relative sliding through rotation.

[0038] Based on the basic structure of the sliding component described above, this utility model is further adapted and optimized for different application scenarios, resulting in multiple specific embodiments.

[0039] like Figure 1-4As shown, in the second embodiment of this utility model, the sliding component is designed for foldable mobile phone scenarios: the first component 1 consists of two mobile phone frames, and the second component 2 is a hinge cover plate; the two mobile phone frames are respectively connected to the hinge cover plate via hinges, and can be flipped and slid relative to the hinge cover plate to form a folded or unfolded state. At this time, the first sliding surface 11 is the surface of the mobile phone frame close to the hinge cover plate, and the second sliding surface 21 is the surface of the hinge cover plate; under the constraint of the hinges, the two mobile phone frames flip and slide from the side of the hinge cover plate to cover the surface of the hinge cover plate, forming an unfolded mobile phone structure, and the reverse movement forms a folded structure. Therefore, a gap 3 is formed between the two mobile phone frames and the surface of the hinge cover plate, and the flocked wear-resistant part 4 is correspondingly disposed on the inner wall of the first sliding surface 11 of the two mobile phone frames and moves closely against the surface of the hinge cover plate.

[0040] The specific parameters of this embodiment are as follows: the height of gap 3 is 0.1-0.4mm; the thickness of flocking adhesive layer 5 is 0.1-1mm; the natural height of fiber flocking layer 6 is 0.1-1mm; and the flock thickness is 0.6-1D. When the two mobile phone frames are folded towards the middle along the hinge, the first sliding surface 11 of the two mobile phone frames slides synchronously along the second sliding surface 21 of the hinge cover. At this time, the fiber flocking layer 6 is compressed, which just fills the gap 3 between the mobile phone frame and the hinge cover. This avoids hard friction between the first sliding surface 11 and the second sliding surface 21, prevents wear between the first component 1 and the second component 2, extends the service life, and also prevents dust from entering the body (in traditional structures, dust easily accumulates due to the gap, causing the hinge to jam). At the same time, this design can meet the force requirements of opening and closing the mobile phone and ensure that the flocked wear-resistant part 4 is not easy to fall off.

[0041] refer to Figure 1-2 5-6 In the third embodiment of this utility model, the sliding component is designed for multi-angle rotation scenarios (such as gimbals and adjustment brackets): the first component 1 is a ball seat, the second component 2 is a ball head, the flocked wear-resistant part 4 is set on the inner wall of the ball seat, and the ball head can rotate 360° within the inner wall of the ball seat.

[0042] The preferred parameters of this embodiment are as follows: the height of the gap 3 is 0.6-1mm; the thickness of the flocked adhesive layer 5 is 1-2mm (a medium-thick adhesive layer is used to improve the adhesion between the flocked wear-resistant part 4 and the inner wall of the ball seat); the natural height of the fiber flock layer 6 is 1-2mm, and the flock thickness is 40-60D. When the ball head rotates on the inner wall of the ball seat, the space between the outer spherical surface of the ball head and the inner wall of the ball seat is filled by the fiber flock layer 6, and the fiber flock layer 6 is compressed synchronously with the rotation—this replaces the hard contact between components with the fiber flock layer 6, which not only reduces the rotational damping of the traditional metal ball head, but also reduces wear and extends service life; at the same time, it can reduce the shaking of the ball head in the ball seat, and the design of the medium-thick adhesive layer can also ensure that the flocked wear-resistant part 4 does not fall off during frequent rotation.

[0043] refer to Figure 1-2 7-8 In the fourth embodiment of this utility model, the sliding component is designed for opening and closing scenarios such as doors and cabinets: the first component 1 is two hinges, the second component 2 is a cylindrical shaft; the second sliding surface 21 is the outer circular surface of the cylindrical shaft, the first sliding surface 11 of the hinge is the matching contact surface that contacts the outer circular surface, the flocked wear-resistant part 4 is provided on the first sliding surface 11 of the hinge, and the hinge can rotate along the cylindrical shaft to realize the opening and closing of the door and the door frame.

[0044] The preferred parameters of this embodiment are as follows: the height of gap 3 is 0.5mm; the thickness of flocked adhesive layer 5 is 2-3mm (a thick adhesive layer is used to meet the force requirements when the door is opened and closed); the natural height of fiber flock layer 6 is 2-3mm, and the flock thickness is 30-50D. When the two hinges rotate around the cylindrical shaft, the first sliding surface 11 of the hinge slides along the second sliding surface 21 of the cylindrical shaft. At this time, the fiber flock layer 6 is compressed, filling the gap 3 between the hinge and the outer circular surface of the cylindrical shaft. The elastic deformation of the fiber flock layer 6 can buffer the impact force when the hinge rotates, reduce the wear between the cylindrical shaft and the first sliding surface 11 of the hinge, and also prevent the door from making impact noise when opening and closing. The thick adhesive layer can improve the bonding strength between the flocked wear-resistant part 4 and the hinge, prevent the wear-resistant part from falling off due to long-term opening and closing of the door, and extend the service life of the components.

[0045] refer to Figure 1-2 9-10 In the fifth embodiment of this utility model, the sliding component is designed for "telescopic + rotation" dual-function scenarios such as camera tripods and furniture lifting rods: the first component 1 is a sleeve, the second component 2 is a telescopic rod; the flocked wear-resistant part 4 is set on the inner wall of the sleeve (i.e. the first sliding surface 11 of the sleeve, which is an arc-shaped surface), and the telescopic rod can rotate or telescopically move along the first sliding surface 11 of the sleeve.

[0046] The preferred parameters of this embodiment are as follows: the height of gap 3 is 1-10mm; the thickness of flocked adhesive layer 5 is 1.5-3mm (using an extra-thick adhesive layer to meet the stress requirements of load-bearing telescopic scenarios); the natural height of fiber flock layer 6 is 10-60mm, and the flock thickness is 50-60D. When the telescopic rod extends or rotates along the first sliding surface 11 of the sleeve, the fiber flock layer 6 is compressed, filling the gap 3 between the telescopic rod and the sleeve. This not only prevents the telescopic rod from getting stuck during extension and retraction, improving the smoothness of long-term use, but also reduces the wear of the telescopic rod on the first sliding surface 11 of the sleeve. The extra-thick adhesive layer design ensures that the flocked wear-resistant part 4 does not fall off during frequent extension and retraction (such as tripod height adjustment), and the filling effect of gap 3 also prevents dust, making it suitable for outdoor use scenarios.

[0047] The rest of the above embodiments are the same as those in Embodiment 1. Features not explained in the above embodiments are explained using the methods in Embodiment 1, and will not be repeated here.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sliding member characterized by: The device includes a first sliding surface of a first component and a second sliding surface of a second component. The first sliding surface may partially cover the surface of the second sliding surface. The first sliding surface and the second sliding surface are slidable relative to each other. A gap communicating with the external environment is formed between the first sliding surface and the second sliding surface. The height of the gap is 0.1-50mm. One of the first sliding surface and the second sliding surface is provided with a flocked abrasion-resistant part, or both the first sliding surface and the second sliding surface are provided with flocked abrasion-resistant parts. The natural height of the flocked abrasion-resistant part is greater than the height of the gap. The compressed height of the flocked abrasion-resistant part is equal to the height of the gap. The flocked abrasion-resistant part includes a flocking adhesive layer and a fiber pile layer.

2. A sliding member according to claim 1, characterized in that: Both the first sliding surface and the second sliding surface are planes, and the first component and the second component slide horizontally together.

3. A sliding member according to claim 1, characterized in that: The first sliding surface is a plane or an arc-shaped surface, and the second sliding surface is a plane or an arc-shaped surface. The first component and the second component rotate relative to each other and slide.

4. A sliding member according to claim 1, characterized in that: The first component is a mobile phone frame, and there are two of them. The second component is a hinge cover plate. The two mobile phone frames are connected to the hinge cover plate by hinges and can be flipped and slid relative to each other. The flocked wear-resistant part is set on the inner wall of the mobile phone frame.

5. A sliding member according to claim 1, characterized in that: The first component is a ball seat, the second component is a ball head, the flocked wear-resistant part is disposed on the inner wall of the ball seat, and the ball head can rotate on the inner wall of the ball seat.

6. A sliding member according to claim 1, characterized in that: The first component consists of two hinges, the second component is a cylindrical shaft, the second sliding surface is the outer circular surface of the cylindrical shaft, the first sliding surface of the hinge is the contact surface that contacts the outer circular surface, the flocked wear-resistant part is disposed on the contact surface, and the hinge rotates along the cylindrical shaft.

7. A sliding member according to claim 1, characterized in that: The first component is a sleeve, the second component is a telescopic rod, the flocked wear-resistant part is disposed on the inner wall of the sleeve, and the telescopic rod can rotate or extend along the inner wall of the sleeve.

8. A sliding member according to claim 1, characterized in that: The fiber pile thickness of the flocked abrasion-resistant part is 0.6D-100D; the thickness of the flocking adhesive layer of the flocked abrasion-resistant part is 0.1-3mm; and the natural height of the fiber pile layer of the flocked abrasion-resistant part is 0.2-60mm.

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