Two-stage rotating biaxial combination and opening and closing device

Abstract

The utility model provides a two -stage rotation's double axle combination and open and shut device, two -stage rotation's double axle combination contains: a lower pivot group and an upper pivot group, the lower pivot group includes a lower pivot, a base connecting piece and a lower connecting piece, the base connecting piece fixed connection is established in the lower pivot, and the lower connecting piece rotation is connected the lower pivot, the upper pivot group sets up in the one side of lower pivot group, and the upper pivot group includes an upper pivot, a support connecting piece and an upper connecting piece, the support connecting piece connects the upper pivot and is same with the lower connecting piece, and the upper connecting piece rotation is connected the upper pivot, wherein, when the external force is applied to the upper connecting piece in a closing direction, the friction between the upper connecting piece and the upper pivot is less than the friction between the lower connecting piece and the lower pivot, the utility model discloses still propose a kind of open and shut device including the aforementioned two -stage rotation's double axle combination. The utility model discloses two -stage rotation's double axle combination and open and shut device can make double axle combination not rotate simultaneously.

Description

Technical Field

[0001] This utility model relates to a pivot and an opening and closing device using the pivot, and more particularly to a two-stage rotational dual-axis combination that requires different torques for opening and closing, and an opening and closing device using the aforementioned dual-axis combination. Background Technology

[0002] Among various opening and closing devices utilizing pivots, consider a rotatable top cover and base as an example. Some devices require the top cover to rotate relative to the base to a certain angle before one part of the top cover continues to rotate relative to the other part. A representative example is Apple's Smart Keyboard, where, after the top cover is opened, the upper half of the top cover can continue to rotate relative to the lower half, with the lower half supporting the tablet computer attached to the upper half. Such devices require a dual-axis setup: a lower pivot between the top cover and the base, and an upper pivot between the two parts of the top cover, allowing for independent rotation.

[0003] However, if the upper and lower pivots are rotated together by the same external force, the following problems will occur: First, when opening, the lower pivot rotates under the external force, causing the entire upper cover to rotate relative to the base. Before reaching a sufficient angle, the upper pivot rotates as well, causing the bottom of the attached tablet to contact the base (keyboard part), resulting in the two getting stuck and unable to open smoothly. Second, when closing, the lower pivot rotates as well before the upper pivot has rotated completely, which may cause the attached tablet to hit the base and fail to close.

[0004] In addition, when the upper pivot is opened, the lower half of the upper cover supports the weight of the tablet computer that is attached to it, and it is also necessary to prevent the lower pivot from being affected by torque and rotating. Utility Model Content

[0005] Therefore, in order to solve the various problems of existing dual-axis combinations, this utility model proposes a two-stage rotation dual-axis combination with different torques required for opening and closing, and an opening and closing device using the aforementioned dual-axis combination.

[0006] To achieve the above and other objectives, this utility model proposes a two-stage rotating dual-axis assembly, comprising: a lower pivot assembly, including a lower pivot, a base connector, and a lower connector, the base connector being fixedly connected to the lower pivot and the lower connector being rotatably connected to the lower pivot; and an upper pivot assembly disposed on one side of the lower pivot assembly, the upper pivot assembly including an upper pivot, a support connector, and an upper connector, the support connector being connected to the upper pivot and moving in tandem with the lower connector, and the upper connector being rotatably connected to the upper pivot, wherein the upper connector is configured such that when an external force is applied to the upper connector in a closing direction, the frictional force between the upper connector and the upper pivot is less than the frictional force between the lower connector and the lower pivot.

[0007] In one embodiment of the present invention, the lower connector is configured such that when an external force is applied to the lower connector in an opening direction, the frictional force between the lower connector and the lower pivot is less than the frictional force between the upper connector and the upper pivot, and the opening direction is opposite to the closing direction.

[0008] In one embodiment of the present invention, the lower connector includes a lower outer circle and a lower connecting portion, the lower outer circle surrounds the lower pivot, the lower connecting portion connects to the lower outer circle and moves in tandem with the bracket connector, the upper connector includes an upper outer circle and an upper connecting portion, the upper outer circle surrounds the upper pivot, the upper connecting portion connects to the upper outer circle, wherein the direction of the lower outer circle surrounding the lower pivot is different from the direction of the upper outer circle surrounding the upper pivot.

[0009] In one embodiment of the present invention, the direction in which the upper enclosing circle surrounds the upper pivot is the closing direction, and the direction in which the lower enclosing circle surrounds the lower pivot is the opening direction.

[0010] In one embodiment of the present invention, the lower connector further includes a lower stop portion connected to the lower circumference, and the lower pivot is provided with a lower limiting portion. The lower limiting portion and the lower stop portion are configured to restrict the lower pivot and the lower circumference to be rotatable relative to each other only within a first predetermined angle; outside the first predetermined angle, the lower limiting portion and the lower stop portion interfere with each other.

[0011] In one embodiment of the present invention, the upper connector further includes an upper stop portion connected to the upper circumference. The bracket connector is provided with an upper limit portion. The upper limit portion and the upper stop portion are configured to restrict the upper pivot and the upper circumference to be rotatable relative to each other only within a second predetermined angle. Outside the second predetermined angle, the upper limit portion and the upper stop portion interfere with each other.

[0012] In one embodiment of the present invention, the upper connector is configured such that the frictional force between the upper connector and the upper pivot when an external force is applied to the upper connector in the closing direction is less than the frictional force between the upper connector and the upper pivot when an external force is applied to the upper connector in the opposite direction to the closing direction.

[0013] In one embodiment of the present invention, the lower connector is configured such that the frictional force between the lower connector and the lower pivot when an external force is applied to the lower connector in the closing direction is greater than the frictional force between the lower connector and the lower pivot when an external force is applied to the lower connector in the opposite direction to the closing direction.

[0014] In one embodiment of the present invention, a bracket is further included to fix the lower connector and the bracket connector together.

[0015] This utility model also proposes a two-stage rotating opening and closing device, which includes: a base; a bracket; an upper plate; and a two-stage rotating dual-axis assembly as described above, wherein the base connector is fixedly connected to the base, the bracket is fixedly connected to the lower connector and the bracket connector, and the upper connector is fixedly connected to the upper plate.

[0016] Therefore, the two-stage rotating dual-axis assembly and opening / closing device of this utility model utilizes the difference in friction between the two pivots to prevent the dual-axis assembly from rotating simultaneously. It can even make the friction between the two pivots change directionally, and the directions of change are exactly opposite, so as to achieve the effect of two-stage rotation of the two pivots respectively "open light and close heavy" and "open heavy and close light". Attached Figure Description

[0017] Figure 1A This is a schematic diagram of the appearance of a two-stage rotating opening and closing device according to an embodiment of the present invention.

[0018] Figure 1B This is a schematic diagram of the closed state of the two-stage rotating opening and closing device according to an embodiment of the present invention.

[0019] Figure 1C This is a schematic diagram of the first stage opening of a two-stage rotating opening and closing device according to an embodiment of the present invention.

[0020] Figure 1D This is a schematic diagram of the second stage opening of the two-stage rotating opening and closing device according to an embodiment of the present invention.

[0021] Figure 1E This is a perspective view of a two-stage rotating opening and closing device according to an embodiment of the present invention.

[0022] Figure 2A This is a cross-sectional schematic diagram of the lower pivot assembly according to an embodiment of the present invention.

[0023] Figure 2B This is a perspective view of the lower pivot assembly according to an embodiment of the present utility model.

[0024] Figure 2C for Figure 2B A three-dimensional diagram from another perspective.

[0025] Figure 3A This is a cross-sectional schematic diagram of the upper pivot assembly according to an embodiment of the present utility model.

[0026] Figure 3B This is a three-dimensional schematic diagram of the upper pivot assembly according to an embodiment of the present utility model.

[0027] Figure Labels

[0028] 100 Two-stage rotational dual-axis combination

[0029] 200 Two-stage rotating opening and closing device

[0030] 1 Lower Pivot Group

[0031] 11 Lower Pivot

[0032] 11a Lower limit part

[0033] 12 Base connectors

[0034] 13 Lower connector

[0035] 131 Lower Wrap

[0036] 132 Lower connecting part

[0037] 133 Lower stop section

[0038] 2 Upper Pivot Group

[0039] 21 Upper Pivot

[0040] 22 Bracket Connector

[0041] 22a Upper limit section

[0042] 23 Upper connector

[0043] 231 Shangbaoyuan

[0044] 232 Upper connecting part

[0045] 233 Upper stop section

[0046] C1 Opening

[0047] C2 opening

[0048] d1 Close direction

[0049] d2 Opening direction

[0050] F1 Base

[0051] F2 bracket

[0052] F3 board

[0053] P tablet PC Detailed Implementation

[0054] To fully understand this utility model, the following specific embodiments, in conjunction with the accompanying drawings, provide a detailed description. Those skilled in the art can understand the purpose, features, and effects of this utility model from the content disclosed in this specification. It should be noted that this utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of this utility model. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of the patent application of this utility model. The explanation is as follows:

[0055] Figure 1A The diagram shows the external appearance of a two-stage rotating opening and closing device 200 that attaches to a tablet computer P. The main structure of the two-stage rotating opening and closing device 2002 includes a base F1, a support F2 that can rotate relative to the base F1, and an upper plate F3 that can rotate relative to the support F2. A lower pivot assembly 1 is provided between the base F1 and the support F2, and a lower pivot assembly 2 is provided between the support F2 and the upper plate F3, for the relative opening and closing of each component.

[0056] like Figure 1B As shown, when the two-stage rotating opening and closing device 200 is fully closed, the bracket F2 and the upper plate F3 are in a plane, forming a cover that closes onto the base F1. Figure 1C As shown, push the bracket F2 and the upper plate F3 so that they move together at a specific angle relative to the base F1. Then, as shown... Figure 1D As shown, the upper plate F3 continues to rotate while the bracket F2 remains stationary. Thus, the bracket F2 and the upper plate F3 are no longer on the same plane, and the bracket F2 can be used to support the tablet computer P that is attached to the upper plate F3.

[0057] like Figure 1E As shown, it omits Figure 1A The tablet computer P is used to magnify and display the specific structure of the lower pivot group 1 and the upper pivot group 2. The two-stage rotating dual-axis assembly 100 of this utility model embodiment is applied to the aforementioned two-stage rotating opening and closing device 200, and includes the lower pivot group 1 and the upper pivot group 2.

[0058] The lower pivot assembly 1 includes a lower pivot 11, a base connector 12, and a lower connector 13. The base connector 12 is fixedly connected to the lower pivot 11 by means of locking, snapping, assembly, or direct molding. In other words, there is no relative movement between the base connector 12 and the lower pivot 11. Conversely, the lower connector 13 is rotatably connected to the lower pivot 11. That is, the lower connector 13 can rotate relative to the lower pivot 11. The base connector 12 and the lower connector 13 are respectively used to connect two components that are to be rotated relative to each other. For example, in this embodiment, the base connector 12 is fixedly connected to the base F1, and the lower connector 13 is fixedly connected to the bracket F2, so that the bracket F2 can rotate relative to the base F1 as shown in the image. Figure 1B Change to Figure 1C Rotate in a certain way.

[0059] The upper pivot assembly 2 includes an upper pivot 21, a support connector 22, and an upper connector 23. The support connector 22 is connected to the upper pivot 21, and the support connector 22 moves in tandem with the lower connector 13 via a direct or indirect connection. There are many ways to make the support connector 22 move in tandem with the lower connector 13. In this embodiment, the support connector 22 is fixedly connected to the support F2, and the support F2 is fixedly connected to the lower connector 13 to achieve the same movement. In other embodiments, the support connector 22 can be directly fixedly connected to the lower connector 13, or the support connector 22 and the lower connector 13 can be integrally formed. The upper connector 23 is rotatably connected to the upper pivot 21. That is, the upper connector 23 can rotate relative to the upper pivot 21. The support connector 22 and the upper connector 23 are used to connect two components that are to be rotated relative to each other. For example, in this embodiment, the bracket connector 22 is fixedly connected to the bracket F2, and the upper connector 23 is fixedly connected to the upper plate F3, so that the upper plate F3 can be positioned relative to the bracket F2 as follows: Figure 1C Change to Figure 1D Rotate in a certain way.

[0060] Please refer to Figure 1D And at the same time refer to Figure 2A and Figure 3A A key feature of the two-stage rotating dual-axis assembly 100 of this invention is that the upper connector 23 is configured such that when an external force is applied to the upper connector 23 in a closing direction d1, the frictional force between the upper connector 23 and the upper pivot 21 is less than the frictional force between the lower connector 13 and the lower pivot 11. This means that by simply pushing the upper plate F3 lightly along the closing direction d1 (overcoming the frictional force between the upper connector 23 and the upper pivot 21, but not overcoming the frictional force between the lower connector 13 and the lower pivot 11), the upper plate F3 can rotate relative to the support F2. And only after the upper plate F3 and the support F2 are on the same plane (from...) Figure 1D Return to state Figure 1C(In the state of closing), continue to apply a large external force along the closing direction d1 to overcome the friction between the lower connector 13 and the lower pivot 11, so that the lower connector 13 rotates relative to the lower pivot 11, and together drive the upper plate F3 and the bracket F2 to close relative to the base F1 (from the state of closing). Figure 1C Return to state Figure 1B (State). In addition, if the friction between the lower connector 13 and the lower pivot 11 is large, and if the bracket F2 is under load (for example, the upper plate F3 has a tablet computer P attached to it), if the torque generated by the load relative to the lower pivot 11 is insufficient to overcome the aforementioned friction between the lower connector 13 and the lower pivot 11, the lower connector 13 and the lower pivot 11 will not rotate relative to each other, so the bracket F2 can stably bear the load.

[0061] There are many ways to make the friction between the upper connector 23 and the upper pivot 21 less than the friction between the lower connector 13 and the lower pivot 11. One approach is to add friction pads between the lower connector 13 and the lower pivot 11 to increase the friction between them. Alternatively, the materials and surface smoothness of the components can be changed to adjust the friction between the upper connector 23 and the upper pivot 21, as well as the friction between the lower connector 13 and the lower pivot 11.

[0062] In this embodiment, a special encircling design is used to achieve the above-mentioned effect. Details are as follows:

[0063] See Figure 2A The lower connector 13 includes a lower enclosure circle 131 and a lower connecting portion 132. The lower enclosure circle 131 surrounds the lower pivot 11, and the lower connecting portion 132 connects to the lower enclosure circle 131 and moves in tandem with the bracket connector 22. Note that the lower enclosure circle 131 formed by the extension of the lower connecting portion 132 has an opening C1. The lower enclosure circle 131 extends from its starting point where it connects to the lower connecting portion 132 to the position where the opening C1 is formed, defining a direction. In this embodiment, this direction is opposite to the closing direction d1 and is an opening direction d2.

[0064] See again Figure 3A The upper connector 23 includes an upper enclosure circle 231 and an upper connecting portion 232. The upper enclosure circle 231 surrounds the upper pivot 21, and the upper connecting portion 232 connects to the upper enclosure circle 231. Note that the upper enclosure circle 231, formed by the extension of the upper connecting portion 232, has an opening C2. The upper enclosure circle 231 extends from its starting point where it connects to the upper connecting portion 232 to the position where the opening C2 is formed, defining a direction. In this embodiment, this direction is the closing direction d1. That is, the direction of the lower enclosure circle 131 surrounding the lower pivot 11 (opening direction d2) is different from the direction of the upper enclosure circle 231 surrounding the upper pivot 21.

[0065] Since the direction of the upper enclosure 231 around the upper pivot 21 is exactly the closing direction d1, when an external force is applied to the upper connector 23 in the closing direction d1, the upper connecting part 232 rotates relative to the upper pivot 21, the opening C2 is pulled larger, the contact area between the upper connecting part 232 and the upper pivot 21 decreases, and the frictional force between the upper connecting part 232 and the upper pivot 21 decreases accordingly. On the other hand, see... Figure 2A Since the direction of the lower enclosure 131 surrounding the lower pivot 11 is exactly opposite to the opening direction d2 of the closing direction d1, when an external force is applied to the lower connector 13 in the closing direction d1, the lower connector 132 rotates relative to the lower pivot 11, the opening C1 is closed more tightly, the contact area between the lower connector 132 and the lower pivot 11 increases, and the frictional force between the lower connector 132 and the lower pivot 11 increases accordingly. Combining the above two conditions, the design of the opening direction of the enclosure can achieve the effect that "when a force is applied in the closing direction d1, the frictional force between the upper connector 232 and the upper pivot 21 is smaller, and the frictional force between the lower connector 132 and the lower pivot 11 is larger".

[0066] Furthermore, compared to directly altering the frictional force of pivot rotation through methods such as "friction plates, changing the materials of various components, or surface smoothness," the rounded opening design achieves another advantage: the lower connector 13 is configured such that when an external force is applied to the lower connector 13 in the opening direction d2, the frictional force between the lower connector 13 and the lower pivot 11 is less than the frictional force between the upper connector 23 and the upper pivot 21. In other words, the device using the two-stage rotating dual-axis assembly 100 of this invention can further achieve: the upper plate F3 and the support F2 first form an integral self-closing state (…). Figure 1B ) Relative to base F1 open ( Figure 1C Only after the lower connector 13 and the lower pivot 11 have rotated to a certain extent relative to each other will the upper plate F3 and the bracket F2 be allowed to rotate relative to each other. Figure 1D The specific operating method is to first start from... Figure 1B In the fully closed state, gently push either the upper plate F3 or the bracket F2 along the opening direction d2 (overcoming the friction between the lower connector 13 and the lower pivot 11, but not overcoming the friction between the upper connector 23 and the upper pivot 21), causing the lower connector 13 and the lower pivot 11 to rotate relative to each other, so that the upper plate F3 and the bracket F2 are as... Figure 1C As shown, they rotate relative to the base F1, while the upper plate F3 and the bracket F2 are on the same plane and do not rotate relative to each other. Only after the upper plate F3, bracket F2, and base F1 reach a certain angle, and a larger external force is applied along the opening direction d2 to overcome the friction between the upper connector 23 and the upper pivot 21, will the upper connector 23 rotate relative to the upper pivot 21, thus causing the upper plate F3 to rotate as shown. Figure 1D The relative support F2 shown rotates.

[0067] See Figure 2A Since the direction of the lower enclosure 131 around the lower pivot 11 is exactly the opening direction d2, when an external force is applied to the lower connector 13 in the opening direction d2, the lower connector 132 rotates relative to the lower pivot 11, the opening C1 is pulled larger, the contact area between the lower connector 132 and the lower pivot 11 decreases, and the friction between the lower connector 132 and the lower pivot 11 decreases accordingly. On the other hand, see... Figure 3A Since the direction of the upper enclosure 231 around the upper pivot 21 is exactly opposite to the closing direction d1 of the opening direction d2, when an external force is applied to the upper connector 23 in the opening direction d2, the upper connector 232 rotates relative to the upper pivot 21, the opening C2 is closed more tightly, the contact area between the upper connector 232 and the upper pivot 21 increases, and the frictional force between the upper connector 232 and the upper pivot 21 increases accordingly. Combining the above two conditions, the design of the enclosure opening direction can achieve the effect that "when a force is applied in the opening direction d2, the frictional force between the upper connector 232 and the upper pivot 21 is greater, and the frictional force between the lower connector 132 and the lower pivot 11 is smaller".

[0068] In other words, by designing the opening directions of the two pivots to be different, the frictional forces of the two pivots change directionally, and the direction of the frictional forces between the upper pivot 21 and the upper connector 23 and between the lower pivot 11 and the lower connector 13 are exactly opposite.

[0069] In detail, in this embodiment, the upper connector 23 is configured such that the frictional force between the upper connector 23 and the upper pivot 21 when an external force is applied to the upper connector 23 in the closing direction d1 is less than the frictional force between the upper connector 23 and the upper pivot 21 when an external force is applied to the upper connector 23 in the opposite direction to the closing direction d1 (i.e., the opening direction d2). In other words, the upper pivot assembly 2 is configured to be "heavy when opening and light when closing," meaning that only a small force is needed to rotate it in the closing direction d1, while a larger force is needed to rotate it in the opening direction d2.

[0070] On the other hand, the lower connector 13 is configured such that the frictional force between the lower connector 13 and the lower pivot 11 when an external force is applied to the lower connector 13 in the closing direction d1 is greater than the frictional force between the lower connector 13 and the lower pivot 11 when an external force is applied to the lower connector 13 in the opposite closing direction d1 (i.e., the opening direction d2). In other words, the lower pivot assembly 1 is configured to be "light when open and heavy when closed," meaning that only a small force is needed to rotate it in the opening direction d2, while a larger force is needed to rotate it in the closing direction d1.

[0071] In this embodiment, the upper pivot group 2 and the lower pivot group 1 correspond precisely to the vertical relationship in the direction of gravity. However, in this invention, the terms "upper" and "lower" do not necessarily mean vertical in the direction of gravity. The two-stage rotation dual-axis combination 100 of this invention can be applied to other opening and closing devices that require two-stage rotation, such as "open light, close heavy" and "open heavy, close light". Therefore, the upper pivot group 2 and the lower pivot group 1 do not always have to be located vertically in the direction of gravity.

[0072] Furthermore, such as Figure 2B and Figure 2C As shown, the lower connector 13 also includes a lower stop 133 connected to the lower circumference 131. The lower pivot 11 is provided with a lower limiting portion 11a. The lower limiting portion 11a and the lower stop 133 are configured to restrict the lower pivot 11 and the lower circumference 131 from rotating relative to each other only within a first predetermined angle, for example, 0 degrees to 45 degrees. Outside the first predetermined angle, the lower limiting portion 11a and the lower stop 133 interfere with each other, so the lower pivot 11 and the lower circumference 131 cannot continue to rotate relative to each other. The shape of the lower limiting portion 11a and the lower stop 133 may, for example, have interfering protrusions along the circumferential direction of the lower pivot 11; however, the present invention is not limited to this. In other embodiments, any arrangement that restricts the lower pivot 11 and the lower circumference 131 from rotating relative to each other only within the first predetermined angle can be used as the lower limiting portion 11a and the lower stop 133 of the present invention.

[0073] Furthermore, such as Figure 3B As shown, the upper connector 23 also includes an upper stop 233 connected to the upper enclosure 231. The bracket connector 22 is provided with an upper limit portion 22a. Generally, the bracket connector 22 can be considered to be fixedly connected to the upper pivot 21, or a large torque is required to overcome the friction between the bracket connector 22 and the upper pivot 21. Therefore, the upper limit portion 22a can be seen to be indirectly provided on the upper pivot 21. The upper limit portion 22a and the upper stop 233 are configured to restrict the upper pivot 21 and the upper enclosure 231 to be rotatable relative to each other only within a second predetermined angle, for example, 45 degrees to 105 degrees; outside the second predetermined angle, the upper limit portion 22a and the upper stop 233 interfere with each other. The shape of the upper limit portion 22a and the upper stop 233 may, for example, have interfering protrusions along the periphery of the upper pivot 21, however, the present invention is not limited to this. In other embodiments, any arrangement that restricts the upper pivot 21 and the upper enclosing circle 231 to be rotatable relative to each other only within a second predetermined angle can be used as the upper limit part 22a and the upper stop part 233 of this utility model.

[0074] In this embodiment, the lower pivot 11 starts at 0 degrees (when the two-stage rotating opening and closing device 200 is fully closed), and the first predetermined angle is from 0 to 45 degrees. Therefore, 0 to 45 degrees is the angle that can be rotated relative to each other. The second predetermined angle is consecutive to the first predetermined angle, for example, from 45 to 105 degrees. That is, before the relative rotation angle between the lower pivot 11 and the lower enclosure 131 reaches the maximum value of the first predetermined angle (45 degrees in this embodiment), the relative rotation between the upper pivot 21 and the upper enclosure 231 is locked. When the relative rotation angle between the lower pivot 11 and the lower enclosure 131 reaches the maximum value of the first predetermined angle (45 degrees), the upper pivot 21 and the upper enclosure 231 can rotate relative to each other. Therefore, the second pivot group 2 rotates continuously, driving the upper plate F3 to rotate relative to the support F2.

[0075] Conversely, when preparing to... Figure 1D When the two-stage rotating opening and closing device 200 shown is closed, the second pivot assembly 2 rotates first, while the lower limit portion 11a and the lower stop portion 133 restrict the rotation of the first pivot assembly 1. This continues until the second pivot assembly 2 rotates to the position shown. Figure 1C When the lower limit part 11a and the lower stop part 133 are in the state of 45 degrees (the maximum value of the first predetermined angle), the lower limit part 11a and the lower stop part 133 release the restriction on the lower pivot 11 and the lower enclosure 131, so the first pivot group 1 continues to rotate and returns to the state of 45 degrees (the maximum value of the first predetermined angle). Figure 1B The state of complete closure (0 degrees).

[0076] Furthermore, as shown in Figure 1, the two-stage rotating dual-axis assembly 100 of this utility model also includes the aforementioned bracket F2, and a fixed connection lower connector 13 and bracket connector 22.

[0077] Furthermore, this utility model proposes a two-stage rotating opening and closing device 200, which includes: the aforementioned base F1, support F2, upper plate F3, and the aforementioned two-stage rotating dual-axis assembly 100.

[0078] The base connector 12 is fixedly connected to the base F1, the bracket F2 is fixedly connected to the lower connector 13 and the bracket connector 22, and the upper connector 23 is fixedly connected to the upper plate F3. Therefore, the bracket F2 and the upper plate F3 can be combined to form a cover, which can be opened and closed relative to the base F1; the bracket F2 and the upper plate F3 can also rotate relative to each other.

[0079] This utility model has been disclosed above with examples; however, those skilled in the art should understand that these examples are merely illustrative and should not be construed as limiting the scope of the utility model. It should be noted that all variations and substitutions equivalent to these examples should be considered within the scope of this utility model. Therefore, the protection scope of this utility model should be determined by the claims.

Claims

1. A two-stage rotating biaxial assembly, characterized in that, Include: A lower pivot assembly includes a lower pivot, a base connector, and a lower connector, wherein the base connector is fixedly connected to the lower pivot and the lower connector is rotatably connected to the lower pivot. as well as An upper pivot assembly is disposed on one side of the lower pivot assembly. The upper pivot assembly includes an upper pivot, a support connector, and an upper connecting member. The support connector is connected to the upper pivot and moves in tandem with the lower connecting member. The upper connecting member is rotatably connected to the upper pivot. The upper connector is configured such that when an external force is applied to the upper connector in a closing direction, the frictional force between the upper connector and the upper pivot is less than the frictional force between the lower connector and the lower pivot.

2. The two-stage rotational dual-axis assembly according to claim 1, characterized in that, The lower connector is configured such that when an external force is applied to the lower connector in an opening direction, the frictional force between the lower connector and the lower pivot is less than the frictional force between the upper connector and the upper pivot, and the opening direction is opposite to the closing direction.

3. The two-stage rotational dual-axis combination according to claim 2, characterized in that, The lower connector includes a lower outer circle and a lower connecting portion. The lower outer circle surrounds the lower pivot, and the lower connecting portion connects to the lower outer circle and moves in tandem with the bracket connector. The upper connector includes an upper outer circle and an upper connecting portion. The upper outer circle surrounds the upper pivot, and the upper connecting portion connects to the upper outer circle. The direction of the lower outer circle around the lower pivot is different from the direction of the upper outer circle around the upper pivot.

4. The two-stage rotational dual-axis combination according to claim 3, characterized in that, The direction in which the upper enclosing circle surrounds the upper pivot is the closing direction, and the direction in which the lower enclosing circle surrounds the lower pivot is the opening direction.

5. The two-stage rotational dual-axis assembly according to claim 3, characterized in that, The lower connector also includes a lower stop portion connected to the lower circumference. The lower pivot is provided with a lower limiting portion. The lower limiting portion and the lower stop portion are configured to restrict the lower pivot and the lower circumference to be rotatable relative to each other only within a first predetermined angle. Outside the first predetermined angle, the lower limiting portion and the lower stop portion interfere with each other.

6. The two-stage rotational dual-axis assembly according to claim 3, characterized in that, The upper connector also includes an upper stop portion connected to the upper circumference. The bracket connector is provided with an upper limit portion. The upper limit portion and the upper stop portion are configured to restrict the upper pivot and the upper circumference to be rotatable relative to each other only within a second predetermined angle. Outside the second predetermined angle, the upper limit portion and the upper stop portion interfere with each other.

7. The two-stage rotational dual-axis assembly according to claim 1, characterized in that, The upper connector is configured such that the frictional force between the upper connector and the upper pivot when an external force is applied to the upper connector in the closing direction is less than the frictional force between the upper connector and the upper pivot when an external force is applied to the upper connector in the opposite direction to the closing direction.

8. The two-stage rotational dual-axis assembly according to claim 1, characterized in that, The lower connector is configured such that the frictional force between the lower connector and the lower pivot when an external force is applied to the lower connector in the closing direction is greater than the frictional force between the lower connector and the lower pivot when an external force is applied to the lower connector in the opposite direction to the closing direction.

9. The two-stage rotational dual-axis assembly according to claim 1, characterized in that, It also includes a bracket for fixing the lower connector and the bracket connector together.

10. A two-stage rotating opening and closing device, characterized in that, Include: A base; A support frame; Once on the board; and The two-stage rotational dual-axis combination as described in any one of claims 1 to 8 The base connector is fixedly connected to the base, the bracket is fixedly connected to the lower connector and the bracket connector, and the upper connector is fixedly connected to the upper plate.

Images