Linear rotating shaft

Abstract

The utility model belongs to the technical field of rotating shaft structures, and discloses a linear rotating shaft which comprises a second connecting piece and a third connecting piece. The third connecting piece is rotationally arranged on the second connecting piece, so that the third connecting piece can rotate relative to the second connecting piece. In the second connecting piece and the third connecting piece, one is provided with an extending part, the other one is provided with a penetrating groove arranged on the extending part in a sleeving mode, and the extending part is arranged in the penetrating groove in a penetrating mode, so that the third connecting piece rotates more stably relative to the second connecting piece. The penetrating groove is formed in the extending direction of the rotating axis of the third connecting piece in a penetrating mode, the extending part is provided with the limiting piece, the limiting piece abuts against the opening end of the penetrating groove, the stability and safety of the third connecting piece in the rotating process can be improved, and the extending part is prevented from being accidentally pulled out of the penetrating groove. By means of the arrangement, the linear rotating shaft can improve the rotating stability and safety, and disengagement is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of rotating shaft structures, in particular to a straight rotating shaft. Background Art

[0002] A hinge is a shaft that connects a product's main components and is used to withstand bending and torque during rotation. In foldable mechanical devices, such as digital cameras, electronic devices, and children's toys, hinges are often used to open and close components and the device itself.

[0003] However, the related parts on the existing rotating shaft are easy to detach during the rotation process, which reduces the safety of use and further affects the user experience. Utility Model Content

[0004] The purpose of the utility model is to provide a straight-line rotating shaft, which can improve the stability and safety of rotation and prevent separation.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A straight-line rotating shaft, comprising:

[0007] a second connecting member;

[0008] The third connecting member is rotatably arranged on the second connecting member. One of the second connecting member and the third connecting member is provided with an extension portion, and the other is provided with a penetration groove sleeved on the extension portion. The penetration groove is provided along the extension direction of the rotation axis of the third connecting member. The extension portion is provided with a limit member, and the limit member abuts against the open end of the penetration groove.

[0009] Optionally, the straight-line rotating shaft further includes a first connecting member, the second connecting member is rotatably disposed on the first connecting member, and the rotation axis of the third connecting member is perpendicular to the rotation axis of the second connecting member.

[0010] Optionally, two of the second connecting members and two of the third connecting members are provided respectively, the two third connecting members are arranged in a one-to-one correspondence with the two second connecting members, and the rotation axes of the two second connecting members are parallel to each other.

[0011] Optionally, a connecting plate is provided on the first connecting member, and a connecting portion is provided at one end of the second connecting member, and the connecting portion is rotatably connected to the connecting plate.

[0012] Optionally, a plurality of connecting plates are provided, and the connecting portion is rotatably arranged between two of the connecting plates.

[0013] Optionally, the protruding portion is provided with a deformation groove.

[0014] Optionally, a plurality of the deformation grooves are provided, and the plurality of deformation grooves are arranged at intervals.

[0015] Optionally, a lubricating oil groove is provided on the protruding portion and / or the penetration groove.

[0016] Optionally, the lubricating oil groove is arranged in a spiral shape.

[0017] Optionally, the second connecting member and the third connecting member are interference fit.

[0018] Beneficial effects of the utility model:

[0019] The present invention provides a straight-line rotating shaft, which includes a second connecting member and a third connecting member. The third connecting member is rotatably arranged on the second connecting member, so that the third connecting member can rotate relative to the second connecting member to meet the use requirements of specific mechanical equipment. One of the second connecting member and the third connecting member is provided with a protruding portion, and the other is provided with a through-groove sleeved on the protruding portion. The protruding portion is penetrated in the through-groove, so that the third connecting member can rotate more stably relative to the second connecting member. The through-groove is provided along the extension direction of the rotation axis of the third connecting member, and the protruding portion is provided with a limiting member. The limiting member abuts against the open end of the through-groove, which can improve the stability and safety of the third connecting member during the rotation process and prevent the protruding portion from being accidentally pulled out of the through-groove. Through the above-mentioned arrangement, the straight-line rotating shaft of the present application can improve the stability and safety of the rotation and prevent detachment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a straight-line rotating shaft provided by an embodiment of the present utility model;

[0021] Figure 2 This is a front view of a straight-line rotating shaft provided by an embodiment of the utility model;

[0022] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0023] Figure 4 This is a side view of a straight-line rotating shaft provided by an embodiment of the utility model;

[0024] Figure 5 This is a cross-sectional view of a straight-line rotating shaft provided by an embodiment of the present utility model;

[0025] Figure 6 This is an exploded view of a straight-line rotating shaft provided by an embodiment of the present utility model;

[0026] Figure 7 yes Figure 6 A partial enlarged view of point B in the middle.

[0027] In the picture:

[0028] 1. First connecting member; 11. Connecting plate; 2. Second connecting member; 21. Connecting portion; 22. Extending portion; 221. Deformation groove; 222. Limiting member; 223. Lubricating oil groove; 3. Third connecting member; 31. Penetrating groove; 311. Open end. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0030] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, terms such as "upper," "lower," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0033] like Figure 1-Figure 7As shown, this embodiment provides a straight-line shaft, which includes a second connecting member 2 and a third connecting member 3. The third connecting member 3 is rotatably mounted on the second connecting member 2. One of the second connecting member 2 and the third connecting member 3 has an extension portion 22, and the other has a through-hole 31 that is sleeved on the extension portion 22. The through-hole 31 is provided along the extension direction of the rotation axis of the third connecting member 3. The extension portion 22 has a stopper 222, which abuts against the open end 311 of the through-hole 31.

[0034] In this embodiment, the third connecting member 3 is rotatably arranged on the second connecting member 2, so that the third connecting member 3 can rotate relative to the second connecting member 2 to meet the use requirements of specific mechanical equipment. One of the second connecting member 2 and the third connecting member 3 is provided with a protruding portion 22, and the other is provided with a through-groove 31 that is sleeved on the protruding portion 22. The protruding portion 22 is penetrated into the through-groove 31, so that the third connecting member 3 can rotate more stably relative to the second connecting member 2. The through-groove 31 is provided along the extension direction of the rotation axis of the third connecting member 3. The protruding portion 22 is provided with a limit member 222. The limit member 222 abuts against the open end 311 of the through-groove 31, which can improve the stability and safety of the third connecting member 3 during the rotation process and prevent the protruding portion 22 from being accidentally pulled out of the through-groove 31. Through the above-mentioned arrangement, the I-shaped rotating shaft of this embodiment can improve the stability and safety of the rotation and prevent detachment.

[0035] The specific structure of the straight shaft is described below:

[0036] Specifically, if Figure 1 and Figure 2 As shown, the I-shaped shaft also includes a first connecting member 1, a second connecting member 2 is rotatably arranged on the first connecting member 1, and the rotation axis of the third connecting member 3 is perpendicular to the rotation axis of the second connecting member 2, thereby realizing the flexible rotation of the I-shaped shaft in multiple directions to meet the use requirements of mechanical equipment and improve the applicability of the I-shaped shaft.

[0037] More specifically, there are two second connecting members 2 and two third connecting members 3 respectively, and the two third connecting members 3 are arranged in a one-to-one correspondence with the two second connecting members 2. The rotation axes of the two second connecting members 2 are parallel to each other, so that the two second connecting members 2 can rotate in the same plane, or their respective rotation planes are parallel to each other to meet the use requirements of specific mechanical equipment.

[0038] Specifically, if Figures 1-6 As shown, a connecting plate 11 is provided on the first connecting member 1, and a connecting portion 21 is provided at one end of the second connecting member 2. The connecting portion 21 is rotatably connected to the connecting plate 11, so that the second connecting member 2 is more stable during the rotation process and reduces the risk of falling off and loosening.

[0039] More specifically, in this embodiment, both the first connector 1 and the second connector 2 are rod-shaped structures to facilitate assembly and use of a straight-line connecting shaft. A connecting plate 11 is provided at the end of the first connector 1, and the connecting portion 21 of the second connector 2 is a plate-shaped structure. Rivets are inserted through the connecting portion 21 and the connecting plate 11, enabling the second connector 2 to rotate relative to the first connector 1. In other embodiments, both the first connector 1 and the second connector 2 may be hexagonal or square shafts, as long as they can achieve the aforementioned functions. The specific structures of these components are not particularly limited herein.

[0040] Specifically, if Figure 6 As shown, there are multiple connecting plates 11, and the connecting part 21 is rotatably set between two connecting plates 11, thereby limiting the rotation of the connecting part 21 to prevent the second connecting member 2 from detaching during rotation, thereby improving the safety and stability of the I-shaped shaft during rotation.

[0041] More specifically, in this embodiment, there are four connecting plates 11, with each two connecting plates 11 forming a group. The two groups of connecting plates 11 are respectively arranged at both ends of the first connecting member 1. The two connecting members in each group are parallel to each other and spaced apart to form a limited space for accommodating the connecting portion 21, which helps to maintain the balance of the entire I-shaped shaft structure and reduce the vibration and noise caused by imbalance. The connecting portions 21 of the two second connecting members 2 rotate the connecting plates 11 arranged at both ends of the first connecting member 1 in a one-to-one correspondence, and the rotation axes of the two second connecting members 2 are parallel to each other, so that the two second connecting members 2 can achieve stable rotation in the same plane. In other embodiments, there are eight connecting plates 11, that is, as long as the above-mentioned functions can be achieved, the specific number of connecting plates 11 is not limited here.

[0042] Specifically, in this embodiment, the second connecting member 2 is provided with a protruding portion 22, and the protruding portion 22 is a rod-shaped structure, and the third connecting member 3 is provided with a penetration groove 31, and the penetration groove 31 is sleeved on the protruding portion 22, so that the third connecting member 3 can achieve stable and smooth rotation relative to the second connecting member 2. Among them, the rod-shaped structure extends along the rotation axis direction of the third connecting member 3 to ensure the balance of the third connecting member 3 during the rotation process. In other embodiments, the protruding portion 22 is provided on the third connecting member 3, and the penetration groove 31 is provided on the second connecting member 2. The above-mentioned function is achieved through the mutual cooperation between the protruding portion 22 and the penetration groove 31. The specific setting positions of the protruding portion 22 and the penetration groove 31 are not further restricted. Among them, the third connecting member 3 of this embodiment can adopt a hexagonal shaft or a square shaft, as long as it can achieve the above-mentioned functional effects, and the specific structure of the third connecting member 3 is not further restricted.

[0043] Specifically, if Figure 6 and Figure 7As shown, the extension portion 22 is provided with a deformation groove 221. When the second connecting member 2 and the third connecting member 3 are assembled, the deformation occurs through the deformation groove 221, thereby reducing the resistance and difficulty in the assembly process, so that the extension portion 22 can be inserted into the insertion groove 31 to realize the assembly of the above-mentioned components.

[0044] More specifically, if Figure 7 As shown, multiple deformation grooves 221 are provided, and the multiple deformation grooves 221 are arranged at intervals. This arrangement allows the extension portion 22 to deform more evenly when subjected to force, avoiding stress concentration and localized excessive deformation. Moreover, the provision of multiple deformation grooves 221 allows the extension portion 22 to deform more smoothly during the insertion process, thereby simplifying the assembly process and reducing assembly difficulty.

[0045] Specifically, if Figure 1-Figure 7 As shown, the penetration groove 31 is provided along the extension direction of the rotation axis of the third connecting member 3, allowing the extension portion 22 to smoothly penetrate the penetration groove 31 during assembly, facilitating relative rotation of the third connecting member 3 relative to the second connecting member 2 about the rotation axis. The extension portion 22 is provided with a stopper 222, which abuts the open end 311 of the penetration groove 31, thereby improving the stability and safety of the above-mentioned rotation process and preventing the extension portion 22 from being accidentally withdrawn from the penetration groove 31.

[0046] More specifically, in this embodiment, the limiting member 222 is an annular protrusion, which is arranged at one end of the protruding portion 22 and extends circumferentially along the protruding portion 22. The penetration groove 31 is set through along the extension direction of the rotation axis of the third connecting member 3. The penetration groove 31 is close to one end of the second connecting member 2 for assembling the second connecting member 2, and the other end is an open end 311. The limiting member 222 abuts against the open end 311 of the penetration groove 31, thereby providing a stable support surface for the rotation of the protruding portion 22 in the penetration groove 31, which not only helps to reduce the shaking and deviation of the third connecting member 3 during the rotation process, improves the stability and accuracy of the rotation, but also improves the safety of the third connecting member 3 during the rotation process, and prevents the protruding portion 22 from being detached and withdrawn from the penetration groove 31.

[0047] Specifically, if Figure 6 and Figure 7 As shown, a lubricating oil groove 223 is provided on the extension portion 22 and / or the penetration groove 31. The lubricating oil groove 223 is used to store lubricating oil to ensure that the lubricating oil can be continuously supplied to the contact surface between the extension portion 22 and the penetration groove 31 during the rotation of the third connecting member 3, forming a lubricating film to reduce friction and wear.

[0048] More specifically, in this embodiment, the lubricating oil groove 223 is provided on the extension 22, facilitating grooving and conveniently replenishing and replacing the lubricating oil. In other embodiments, the lubricating oil groove 223 is provided on the inner wall of the through-hole 31. Since the lubricating oil is confined within the through-hole 31, this helps reduce leakage and waste of lubricating oil. It is understood that the specific location of the lubricating oil groove 223 is not particularly limited, as long as it can achieve the aforementioned functions.

[0049] More specifically, the lubricating oil groove 223 is arranged in a spiral shape, which can ensure that the lubricating oil is evenly distributed on the contact surface of the component, thereby reducing dry friction and wear.

[0050] Specifically, if Figures 1-6 As shown, the second connecting member 2 and the third connecting member 3 are interference fit, and the interference fit can provide a larger fastening force to ensure that the second connecting member 2 and the third connecting member 3 will not loosen or fall off.

[0051] The following is an explanation of the specific assembly process of the straight shaft:

[0052] Place the third connecting member 3 in the jig, insert the protruding portion 22 of the second connecting member 2 into the through-groove 31 of the third connecting member 3, and make the limit member 222 abut against the open end 311 of the through-groove 31, rotate the third connecting member 3 through the jig to confirm that the torque value between the third connecting member 3 and the second connecting member 2 is within a certain range and tends to a stable value state, thereby completing the assembly of one group of third connecting members 3 and second connecting members 2, and then repeat the above operation to complete the assembly between another group of third connecting members 3 and second connecting members 2, rotate the connecting portions 21 of the two second connecting members 2 to the connecting plates 11 at both ends of the first connecting member 1 through rivets, and test the torque value between the second connecting member 2 and the first connecting member 1 to ensure that it meets the standard value. Through the above assembly, the I-shaped shaft of this embodiment can achieve flexible rotation in multiple directions, and the torque value is stable, not easy to fall out, and has wider adaptability.

[0053] It should be noted that the second connecting member 2 and the third connecting member 3 of this embodiment are both electroplated with chemical nickel, which can extend their friction service life.

[0054] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A straight shaft, characterized in that: include: A second connecting member (2); The third connecting member (3) is rotatably arranged on the second connecting member (2). One of the second connecting member (2) and the third connecting member (3) is provided with a protruding portion (22), and the other is provided with a penetration groove (31) sleeved on the protruding portion (22). The penetration groove (31) is provided along the extension direction of the rotation axis of the third connecting member (3). The protruding portion (22) is provided with a limiting member (222), and the limiting member (222) abuts against the open end (311) of the penetration groove (31).

2. The straight-line shaft according to claim 1, characterized in that: The straight-line rotating shaft further comprises a first connecting member (1), the second connecting member (2) is rotatably arranged on the first connecting member (1), and the rotation axis of the third connecting member (3) is perpendicular to the rotation axis of the second connecting member (2).

3. The straight-line shaft according to claim 2, characterized in that: There are two of each of the second connecting member (2) and the third connecting member (3), the two third connecting members (3) are arranged in one-to-one correspondence with the two second connecting members (2), and the rotation axes of the two second connecting members (2) are parallel to each other.

4. The straight-line shaft according to claim 2, characterized in that: A connecting plate (11) is provided on the first connecting member (1), and a connecting portion (21) is provided at one end of the second connecting member (2), wherein the connecting portion (21) is rotatably connected to the connecting plate (11).

5. The straight-line rotating shaft according to claim 4, characterized in that: A plurality of connecting plates (11) are provided, and the connecting portion (21) is rotatably arranged between two connecting plates (11).

6. The straight-line shaft according to claim 1, characterized in that: The protruding portion (22) is provided with a deformation groove (221).

7. The straight-line shaft according to claim 6, characterized in that: A plurality of the deformation grooves (221) are provided, and the plurality of deformation grooves (221) are arranged at intervals.

8. The straight-line shaft according to claim 1, characterized in that: A lubricating oil groove (223) is provided on the protruding portion (22) and / or the penetration groove (31).

9. The straight-line shaft according to claim 8, characterized in that: The lubricating oil groove (223) is arranged in a spiral shape.

10. The straight-line rotating shaft according to any one of claims 1 to 9, characterized in that: The second connecting member (2) and the third connecting member (3) are interference-fitted.

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