Damping rotating shaft structure and electronic product

Abstract

The utility model discloses a damping rotating shaft structure which comprises a base plate, an overturning piece and a Teflon pipe, a first one of the base plate and the overturning piece is provided with an installation hole, a second one of the base plate and the overturning piece is provided with an external thread part, the first one is any one of the base plate and the overturning piece, and the second one is the other one of the base plate and the overturning piece. The Teflon pipe is arranged in the mounting hole, the external thread part is screwed into an inner hole of the Teflon pipe, so that an internal thread surface is formed on the inner wall of the Teflon pipe, the outer wall of the Teflon pipe extrudes the inner wall of the mounting hole, and the friction force between the external thread part and the internal thread surface is smaller than the friction force between the outer wall of the Teflon pipe and the inner wall of the mounting hole; when the external force overcomes the friction force between the external thread part and the internal thread surface, the overturning piece rotates relative to the base plate, and when the external force is removed, the relative position of the overturning piece and the base plate is kept unchanged. The damping rotating shaft structure is suitable for the requirement for small-size internal rotation damping, the structure is simple, assembling is convenient, the requirement for machining precision is low, and the cost of structural parts is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rotating shaft structures, and more specifically, to a damping rotating shaft structure. In addition, the utility model also relates to an electronic product comprising the damping rotating shaft structure. Background Art

[0002] The damping hinge structure is widely used in electronic products. For example, a mobile phone back clip is fixed to the back of a mobile phone case through the damping hinge structure, so that the mobile phone back clip can be rotated to any position relative to the mobile phone and can stay in the rotated position.

[0003] In the prior art, there are three ways to implement the damping shaft structure. One is to use a mechanical interference fit between metal parts, another is to use a soft rubber sleeve, and the third is to use a hinge structure.

[0004] However, the use of mechanical interference fit between metal parts has high requirements for mechanical processing; the use of soft rubber sleeves is prone to rebound, that is, after the shaft is rotated into place, it will rebound a certain amount, making the position after rotation inaccurate; the hinge structure is large in size.

[0005] In summary, how to provide a damping shaft structure with low processing requirements, no rebound phenomenon and relatively small size is a problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0006] In view of this, an object of the present invention is to provide a damping shaft structure and an electronic product having the damping shaft structure, which has low processing requirements, no rebound phenomenon, and relatively small size.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A damping shaft structure includes a base plate, a flip member and a Teflon tube, wherein the first of the base plate and the flip member is provided with a mounting hole, and the second of the base plate and the flip member is provided with an external threaded portion, the first being any one of the base plate and the flip member, and the second being the other of the base plate and the flip member; the Teflon tube is arranged in the mounting hole, and the external threaded portion is screwed into the inner hole of the Teflon tube so that the inner wall of the Teflon tube forms an internal threaded surface, and the outer wall of the Teflon tube squeezes the inner wall of the mounting hole, and the friction force between the external threaded portion and the internal threaded surface is smaller than the friction force between the outer wall of the Teflon tube and the inner wall of the mounting hole, so that when an external force overcomes the friction force between the external threaded portion and the internal threaded surface, the flip member is rotated relative to the base plate, and when the external force is removed, the flip member maintains an unchanged relative position with the base plate.

[0009] Optionally, the second is provided with a first threaded hole, the first threaded hole is threadedly connected with a first screw, the length of the first screw is greater than the length of the first threaded hole, so that the part of the first screw extending out of the first threaded hole serves as the external threaded portion.

[0010] Optionally, thread glue is applied to the portion where the first screw is connected to the first threaded hole.

[0011] Optionally, the mounting hole is an elongated hole, and the Teflon tube is arranged inside one end of the mounting hole.

[0012] Optionally, the second is provided with a rotating shaft coaxial with the external threaded portion, and the rotating shaft is rotatably connected to the other end of the mounting hole.

[0013] Optionally, a limiting shoulder for limiting the end of the Teflon tube is provided in the mounting hole, so that one end of the Teflon tube abuts against the limiting shoulder;

[0014] The Teflon tube is clearance-matched with the mounting hole.

[0015] Optionally, the Teflon tube is a tube made of fluorinated ethylene propylene copolymer.

[0016] An electronic product comprises any one of the above-mentioned damping shaft structures.

[0017] Optionally, the electronic product is an imaging device, and the substrate is connected to a shell of the imaging device so that the flip piece is located at the top and / or bottom of the shell, so that the imaging device can be clamped on the external device through the flip piece.

[0018] Optionally, the substrate is arranged on the housing in an adjustable position so that the flip member can adapt to the external devices of different sizes.

[0019] The damping shaft structure provided by the utility model is provided with a Teflon tube in the installation hole. Since the friction coefficient of the Teflon tube is low and it has good mechanical toughness, the external thread of the external thread part can be screwed into the inner hole of the Teflon tube to form an internal thread surface on the inner wall of the Teflon tube, which is equivalent to tapping the inner wall of the Teflon tube. When the external thread part and the internal thread surface of the inner wall of the Teflon tube rotate relative to each other, the internal thread surface is not easily worn away due to the better mechanical toughness of the Teflon tube. Therefore, in the process of flipping the flip part relative to the base plate, the external thread part and the internal thread of the inner wall of the Teflon tube are squeezed to form a damping force. Under the cooperation of the external thread part and the internal thread surface of the inner wall of the Teflon tube, the flip part can be kept at any desired position relative to the base plate without rebounding. In addition, since the Teflon tube has a certain thickness, the circumferential area of ​​its outer wall is larger than the circumferential area of ​​its inner wall, and compared with the contact between the external threaded portion and the internal threaded surface of the inner wall of the Teflon tube, the area of ​​the outer wall of the Teflon tube in contact with the inner wall of the mounting hole is larger. Therefore, when the external threaded portion is screwed into the inner hole of the Teflon tube, the Teflon tube is squeezed and pressed against the inner wall of the mounting hole, the friction between the outer wall of the Teflon tube and the inner wall of the mounting hole is greater than the friction between the external threaded portion and the internal threaded surface. Therefore, under the action of external force, the external threaded portion can be rotated relative to the inner wall of the Teflon tube, realizing the rotation of the flip part equivalent to the base plate.

[0020] It can be seen that the damping shaft structure utilizes the external threaded part and the internal threaded surface of the inner wall of the Teflon tube to form damping, which can avoid rebound phenomenon compared with the use of soft rubber sleeves to form damping; moreover, compared with the use of mechanical interference fit between metal parts to form damping, it reduces the processing technology requirements for parts; compared with the use of hinges to form a damping structure, the size is small. Therefore, the damping shaft structure is suitable for the needs of small-size internal rotation damping, and has a simple structure, easy assembly, low processing accuracy requirements, and reduced structural parts costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 A cross-sectional view of a damping shaft structure provided by a specific embodiment of the utility model;

[0023] Figure 2 for Figure 1 An exploded view of the damping shaft structure is shown.

[0024] Reference numerals:

[0025] 1-base plate; 11-mounting hole; 2-flipping piece; 21-first threaded hole; 22-second threaded hole; 3-Teflon tube; 4-first screw; 5-second screw. DETAILED DESCRIPTION

[0026] 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 of 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.

[0027] The core of the utility model is to provide a damping shaft structure, which has low processing requirements, no rebound phenomenon, and relatively small size. Another core of the utility model is to provide an electronic product including the damping shaft structure, which has the same beneficial effects as the aforementioned damping shaft structure.

[0028] Please refer to Figure 1 The embodiment of the utility model provides a damping shaft structure, including a substrate 1, a flip member 2 and a Teflon tube 3, the first of the substrate 1 and the flip member 2 is provided with a mounting hole 11, and the second is provided with an external threaded portion, the first is any one of the substrate 1 and the flip member 2, and the second is the other of the substrate 1 and the flip member 2; the Teflon tube 3 is arranged in the mounting hole 11, and the external threaded portion is screwed into the inner hole of the Teflon tube 3, so that the inner wall of the Teflon tube 3 forms an internal threaded surface, and the outer wall of the Teflon tube 3 squeezes the inner wall of the mounting hole 11, and the friction force between the external threaded portion and the internal threaded surface is less than the friction force between the outer wall of the Teflon tube 3 and the inner wall of the mounting hole 11, so that when the external force overcomes the friction force between the external threaded portion and the internal threaded surface, the flip member 2 rotates relative to the substrate 1, and when the external force is removed, the relative position of the flip member 2 with the substrate 1 remains unchanged.

[0029] That is to say, in the embodiment of the utility model, a Teflon tube 3 is arranged in the mounting hole 11. Since the friction coefficient of the Teflon tube 3 is low and it has good mechanical toughness, the external thread of the external threaded part can be screwed into the inner hole of the Teflon tube 3 to form an internal threaded surface on the inner wall of the Teflon tube 3, which is equivalent to tapping the inner wall of the Teflon tube 3. When the external threaded part and the internal threaded surface of the inner wall of the Teflon tube 3 rotate relative to each other, the internal threaded surface is not easily worn away due to the better mechanical toughness of the Teflon tube 3. Therefore, in the process of flipping the flip part 2 relative to the substrate 1, the external threaded part and the internal thread of the inner wall of the Teflon tube 3 are squeezed to form a damping force. In addition, with the cooperation of the external threaded part and the internal threaded surface of the inner wall of the Teflon tube 3, the flip part 2 can stay at any desired position relative to the substrate 1 without rebounding. In addition, since the Teflon tube 3 has a certain thickness, the circumferential area of ​​its outer wall is larger than the circumferential area of ​​its inner wall, and compared with the contact between the external threaded portion and the internal threaded surface of the inner wall of the Teflon tube 3, the area of ​​the outer wall of the Teflon tube 3 in contact with the inner wall of the mounting hole 11 is larger. Therefore, when the external threaded portion is screwed into the inner hole of the Teflon tube 3, the Teflon tube 3 is squeezed and pressed against the inner wall of the mounting hole 11, the friction between the outer wall of the Teflon tube 3 and the inner wall of the mounting hole 11 is greater than the friction between the external threaded portion and the internal threaded surface. Therefore, under the action of external force, the external threaded portion can be rotated relative to the inner wall of the Teflon tube 3, thereby realizing the rotation of the flip part 2 equivalent to the substrate 1.

[0030] It can be seen that the damping shaft structure utilizes the external threaded portion and the internal threaded surface of the inner wall of the Teflon tube 3 to form damping, which can avoid rebounding compared to the use of a soft rubber sleeve to form damping; moreover, compared to the use of mechanical interference fit between metal parts to form damping, it reduces the processing technology requirements for parts; compared to the use of hinges to form a damping structure, the size is small, therefore, the damping shaft structure is suitable for the needs of small-size internal rotation damping, and has a simple structure, easy assembly, low requirements for processing accuracy, and reduces the cost of structural parts.

[0031] It should be noted that, in the present embodiment, the first and the second are concepts defined merely for the convenience of description, that is, the mounting hole 11 can be provided on the substrate 1, in which case the external threaded portion is provided on the flip member 2; or vice versa, that is, the mounting hole 11 is provided on the flip member 2, and the external threaded portion is provided on the substrate 1.

[0032] Please refer to Figure 2Considering the convenience of processing and assembly, in some embodiments, the second one of the substrate 1 and the flip member 2 is provided with a first threaded hole 21, and the first threaded hole 21 is threadedly connected with a first screw 4, and the length of the first screw 4 is greater than the length of the first threaded hole 21, so that the part of the first screw 4 extending out of the first threaded hole 21 serves as an external threaded portion. That is, in this embodiment, the external threaded portion is formed by the first screw 4 connected to the second one, and since the first screw 4 is a standard part, it is easier to obtain, and the first screw 4 is convenient to assemble with the first threaded hole 21, and the cost is low.

[0033] Furthermore, in order to improve the connection strength between the first screw 4 and the first threaded hole 21, in some embodiments, the portion where the first screw 4 is connected to the first threaded hole 21 is coated with thread glue. That is, in this embodiment, by coating the portion where the first screw 4 is connected to the first threaded hole 21 with thread glue, the connection strength between the first screw 4 and the first threaded hole 21 is further increased, thereby ensuring the connection reliability between the first screw 4 and the second one of the substrate 1 and the flip member 2, so that the first screw 4 and the second one of the substrate 1 and the flip member 2 are fastened as a whole, thereby playing a role of locking and preventing loosening.

[0034] Further, in some embodiments, when the first screw 4 is screwed into the Teflon tube 3, the first screw 4 has a preset pre-tightening force. For example, when the first screw 4 is screwed into the Teflon tube 3, a torque greater than 2KGF.CM is applied to the first screw 4. This is conducive to further tightening the first screw 4 and the second one of the substrate 1 and the flip member 2 into a whole.

[0035] In addition, if Figure 1 As shown, considering the simplicity of the structure, in some embodiments, the mounting hole 11 is a long strip hole, and the Teflon tube 3 is arranged inside one end of the mounting hole 11. In other words, the Teflon tube 3 is offset at one end of the mounting hole 11, and the damping requirement can be met by using the Teflon tube 3, which has a simple structure and is easy to assemble.

[0036] Furthermore, in some embodiments, the second one of the base plate 1 and the flip member 2 is provided with a rotating shaft coaxial with the external threaded portion, and the rotating shaft is rotatably connected to the other end of the mounting hole 11. In other words, the other end of the mounting hole 11 away from the Teflon tube 3 is rotatably connected to the rotating shaft, thereby improving the stability of the rotation of the flip member 2 relative to the base plate 1.

[0037] It should be noted that this embodiment does not specifically limit the arrangement of the rotating shaft. Figure 2As shown, in some embodiments, the second one of the substrate 1 and the flip member 2 is provided with a second threaded hole 22, and the second threaded hole 22 is threadedly connected with a second screw 5, and the length of the second screw 5 is greater than the length of the second threaded hole 22, so that the part of the second screw 5 extending from the second threaded hole 22 can be used as a rotation axis and extend into the mounting hole 11. It can be understood that there is a gap between the part of the second screw 5 extending into the mounting hole 11 and the mounting hole 11 to reduce the friction force when the flip member 2 rotates. That is to say, in this embodiment, the second screw 5 connected to the second one forms a rotation axis, and since the second screw 5 is a standard part, it is easier to obtain, and the second screw 5 and the second threaded hole 22 are convenient to assemble, and the cost is low.

[0038] Of course, in other embodiments, when the damping requirement is greater, Teflon tubes 3 can be respectively installed at both ends of the mounting hole 11, and the two external threaded parts can be screwed into the two Teflon tubes 3 respectively, and the two external threaded parts can be matched with the internal threaded surfaces of the inner walls of the two Teflon tubes 3 to increase the damping force.

[0039] In addition, considering the convenience of installing the Teflon tube 3, in some embodiments, a stop shoulder for limiting the end of the Teflon tube 3 is provided in the installation hole 11, so that one end of the Teflon tube 3 abuts against the stop shoulder. That is to say, when the Teflon tube 3 is installed in the installation hole 11, the Teflon tube 3 can be abutted against the stop shoulder. When the Teflon tube 3 abuts against the stop shoulder, the Teflon tube 3 cannot be pushed any more, indicating that the Teflon tube 3 is installed in place, which plays a role in rapid positioning during installation; at the same time, when the external thread part is screwed into the Teflon tube 3, the stop shoulder gives the Teflon tube 3 a reaction force, which is conducive to ensuring the correct position of the Teflon tube 3 when the external thread part is screwed into the Teflon tube 3.

[0040] Further, in some embodiments, before the external threaded portion is screwed into the inner hole of the Teflon tube 3, the Teflon tube 3 is clearance-matched with the mounting hole 11. This facilitates the Teflon tube 3 to be inserted into the mounting hole 11 during assembly, thereby facilitating assembly.

[0041] It should be noted that the present embodiment does not limit the specific gap between the Teflon tube 3 and the mounting hole 11, as long as there is a gap between the two to facilitate assembly. It is understandable that the gap between the Teflon tube 3 and the mounting hole 11 needs to satisfy the requirement that after the external thread portion is screwed into the inner hole of the Teflon tube 3, the Teflon tube 3 is squeezed and its outer wall can be closely attached to the inner wall of the mounting hole 11. For example, in some embodiments, the outer diameter of the Teflon tube 3 is 3 mm, and the inner diameter of the mounting hole 11 is 3.1 mm.

[0042] In addition, the above-mentioned embodiment does not limit the inner diameter of the Teflon tube 3 and the outer diameter of the external threaded portion, as long as the external threaded portion can be screwed into the inner hole of the Teflon tube 3 and can extrude the Teflon tube 3. In some embodiments, the inner diameter of the Teflon tube 3 is 1.5 mm, and the outer diameter of the external threaded portion is 2 mm; for example, a first screw 4 of M2 is used.

[0043] In addition, in order to improve the performance of the Teflon tube 3, in some embodiments, the Teflon tube 3 is a tube made of fluorinated ethylene propylene copolymer. That is, the Teflon tube 3 is a FEP (Hexafluoropropene-tetrafluoroethylenecopolymer) tube, also called F-46 tube. The fluorinated ethylene propylene copolymer material has good hardness and tensile strength, which makes the performance of the Teflon tube 3 better.

[0044] In addition to the above-mentioned damping shaft structure, the present invention also provides an electronic product including the damping shaft structure disclosed in the above-mentioned embodiment. This embodiment does not limit the specific type and structure of the electronic product.

[0045] The focus of this embodiment is to adopt the damping shaft structure disclosed in any of the above embodiments, which is suitable for the needs of small-sized internal rotation damping, has a simple structure, is easy to assemble, has low requirements for processing accuracy, and reduces the cost of structural parts.

[0046] In some embodiments, the electronic product is an imaging device, and the substrate 1 is connected to the housing of the imaging device so that the flip member 2 is located at the top and / or bottom of the housing, so that the imaging device is clipped onto the external device through the flip member 2. That is to say, the imaging device in this embodiment is clipped with the external device through the flip member 2 to facilitate the use of the imaging device. It should be noted that this embodiment does not specifically limit the imaging device. For example, the imaging device may be an infrared thermal imager, a visible light imaging device, or a dual-light imaging device. In addition, this embodiment does not specifically limit the external device. For example, the external device may be a mobile phone, a tablet computer, etc.

[0047] Furthermore, in some embodiments, the position of the substrate 1 is adjustable on the housing so that the flip member 2 can adapt to external devices of different sizes. That is, in this embodiment, the position of the flip member 2 can be changed by adjusting the position of the substrate 1 relative to the housing so that the flip member 2 can adapt to external devices of different sizes. For example, in some embodiments, the damping shaft structure is provided at the top and bottom of the imaging device, and the external device is a mobile phone. At least one of the substrates 1 of the damping shaft structure at the top and bottom of the imaging device can be adjusted along the length direction of the housing to change the distance between the top and bottom flip members 2, thereby adapting to mobile phones of different lengths.

[0048] It should be noted that this embodiment does not limit the specific implementation method of the adjustable position of the substrate 1, as long as the position adjustment of the substrate 1 can be achieved, for example, the substrate 1 is retractable, etc. For details, please refer to the relevant technology, which will not be repeated in this article.

[0049] It should also be noted that, in this specification, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0050] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0051] The damping shaft structure and electronic product provided by the utility model are introduced in detail above. The principle and implementation method of the utility model are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the utility model.

Claims

1. A damping shaft structure, characterized in that: The invention comprises a base plate (1), a flip member (2) and a Teflon tube (3); the first of the base plate (1) and the flip member (2) is provided with a mounting hole (11), and the second of the base plate (1) and the flip member (2) is provided with an external threaded portion; the first of the base plate (1) and the flip member (2) is any one of the base plate (1) and the flip member (2), and the second of the base plate (1) and the flip member (2) is the other one of the base plate (1) and the flip member (2); the Teflon tube (3) is provided in the mounting hole (11), and the external threaded portion is screwed into the inner hole of the Teflon tube (3) so that the Teflon tube (3) is An inner thread surface is formed on the inner wall, and the outer wall of the Teflon tube (3) is pressed against the inner wall of the mounting hole (11), and the friction force between the outer thread portion and the inner thread surface is smaller than the friction force between the outer wall of the Teflon tube (3) and the inner wall of the mounting hole (11), so that when an external force overcomes the friction force between the outer thread portion and the inner thread surface, the flip member (2) rotates relative to the base plate (1), and when the external force is removed, the flip member (2) maintains an unchanged relative position with respect to the base plate (1).

2. The damping shaft structure according to claim 1, characterized in that: The second is provided with a first threaded hole (21), the first threaded hole (21) is threadedly connected with a first screw (4), the length of the first screw (4) is greater than the length of the first threaded hole (21), so that the part of the first screw (4) extending out of the first threaded hole (21) serves as the external threaded portion.

3. The damping shaft structure according to claim 2, characterized in that: The portion where the first screw (4) is connected to the first threaded hole (21) is coated with thread glue.

4. The damping shaft structure according to any one of claims 1 to 3, characterized in that: The mounting hole (11) is a long strip-shaped hole, and the Teflon tube (3) is arranged inside one end of the mounting hole (11).

5. The damping shaft structure according to claim 4, characterized in that: The second is provided with a rotating shaft coaxial with the external threaded portion, and the rotating shaft is rotatably connected to the other end of the mounting hole (11).

6. The damping shaft structure according to any one of claims 1 to 3, characterized in that: A limiting shoulder for limiting the end of the Teflon tube (3) is provided in the mounting hole (11), so that one end of the Teflon tube (3) abuts against the limiting shoulder; Before the external threaded portion is screwed into the inner hole of the Teflon tube (3), the Teflon tube (3) and the mounting hole (11) are clearance-matched.

7. The damping shaft structure according to any one of claims 1 to 3, characterized in that: The Teflon tube (3) is a tube made of fluorinated ethylene propylene copolymer.

8. An electronic product, characterized in that: The invention comprises the damping shaft structure as described in any one of claims 1 to 7.

9. The electronic product according to claim 8, characterized in that: The electronic product is an imaging device, and the substrate (1) is connected to a housing of the imaging device so that the flip member (2) is located at the top and / or bottom of the housing, so that the imaging device can be clipped onto the external device by means of the flip member (2).

10. The electronic product according to claim 9, characterized in that: The base plate (1) is arranged on the housing in an adjustable position so that the flip member (2) can adapt to external devices of different sizes.

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