Angle-adjustable hinge structure, display screen mounting structure and treadmill

Abstract

The utility model discloses an angle-adjustable hinge structure, a display screen mounting structure and a treadmill, the angle-adjustable hinge structure comprises a first support and a second support which are hinged to each other through a first rotating shaft, and a torsional spring and a ratchet wheel limiting structure are arranged between the first support and the second support; the torsion spring is used for providing rotation driving force for relative rotation of the first support and the second support, and the ratchet wheel limiting structure is used for limiting relative rotation of the first support and the second support, so that the first support can only rotate in a certain direction relative to the second support under the limiting effect of the ratchet wheel limiting structure and cannot rotate in the opposite direction. The pawl limits the first support in the direction and cooperates with the tension of the reset tension spring to jointly act on the first support, so that when the acting force applied to the first support does not exceed the elastic force of the reset tension spring, the position of the first support and the position of the second support can be kept relatively stable. Therefore, unnecessary position deflection, caused by vibration, of the first support relative to the second support is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of hinged structures, and in particular to an angle-adjustable hinged structure, a display screen mounting structure, and a treadmill. Background Art

[0002] Treadmills have been widely used as fitness equipment. With the development of intelligent electronic technology, installing a display screen on a treadmill to provide users with exercise information, entertainment functions, and control functions has become a common configuration of treadmills. However, since a treadmill is usually not limited to one person, different users have different requirements for the orientation of the display screen due to differences in height and usage habits. Therefore, the installation angle of the display screen usually installed on the treadmill is adjustable. In the case where the display screen and the treadmill are not fixedly connected, on the one hand, the installation structure of the display screen and the treadmill is required to facilitate the adjustment of the display screen angle. On the other hand, it is also necessary to avoid changes in the orientation of the display screen due to unstable installation due to the vibration of the treadmill, which affects the use. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide an angle-adjustable hinge structure, a display screen mounting structure and a treadmill, which can solve the above-mentioned problems existing in the prior art.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] On the one hand, an angle-adjustable hinge structure is provided, comprising:

[0006] A second bracket, on which a first rotating shaft is disposed;

[0007] A first bracket, hinged to the second bracket via the first rotating shaft;

[0008] A torsion spring and a ratchet limiting structure are provided between the first bracket and the second bracket;

[0009] The torsion spring is wound around the first rotating shaft, one end of which is connected to the first bracket, and the other end of which is connected to the second bracket, and is used to drive the first bracket to rotate relative to the second bracket along the second direction;

[0010] The ratchet limiting structure includes a pawl and gear teeth, the gear teeth are arranged on the first bracket, the pawl can be rotatably installed on the second bracket, one end of the pawl cooperates with the gear teeth, and the other end is connected to a reset spring, and the ratchet limiting structure is configured to allow the first bracket to rotate relative to the second bracket in a first direction around the axis of the first rotating shaft, and prevent the first bracket from rotating relative to the second bracket in a second direction around the axis of the first rotating shaft, and the second direction is opposite to the first direction.

[0011] In the present application, the first bracket and the second bracket are hingedly connected by the first rotating shaft, so that the first bracket and the second bracket can rotate relative to each other, the torsion spring is used to provide a rotational driving force for the relative rotation of the first bracket and the second bracket, and the ratchet limiting structure is used to limit the relative rotation of the first bracket and the second bracket, so that under the limiting action of the ratchet limiting structure, the first bracket can only rotate in a certain direction relative to the second bracket, and cannot rotate in the opposite direction, and the pawl limits the first bracket in this direction, and cooperates with the tension of the reset tension spring to act on the first bracket together, so that when the force applied to the first bracket does not exceed the elastic force of the reset tension spring, the first bracket can maintain a relatively stable position with the second bracket, thereby avoiding unnecessary position deflection of the first bracket relative to the second bracket due to vibration. Since the force applied by the reset tension spring is an elastic force, the deformation caused by vibration can also be quickly restored, and no irreversible position change will be formed, so that the first bracket and the second bracket can be reliably maintained at the preset relative position for a long time.

[0012] Optionally, a torsion spring mounting hole is provided on the first bracket, a torsion spring blocking piece is provided on the second bracket, and the torsion spring is wound around the first rotating shaft, with one end inserted into the torsion spring mounting hole and the other end hung on the torsion spring blocking piece.

[0013] The torsion spring is installed through the torsion spring blocking piece and the torsion spring installation hole to achieve torsional drive between the first bracket and the second bracket.

[0014] Optionally, the torsion spring blocking piece is a protrusion arranged on a surface of the second bracket facing the first bracket.

[0015] Optionally, the protrusion is welded to the surface of the second bracket, or the protrusion is riveted to the surface of the second bracket.

[0016] Optionally, the torsion spring blocking piece and the second bracket are an integral structure, the torsion spring blocking piece is flush with a surface of the second bracket facing the first bracket, or the torsion spring blocking piece protrudes from a surface of the second bracket facing the first bracket.

[0017] Optionally, the first rotating shaft is a bolt, and the bolt cooperates with a nut to hinge the first bracket and the second bracket, and the first bracket and the second bracket are limited between the nut and the nut of the bolt.

[0018] Optionally, a pawl mounting frame is provided on the second bracket, and the pawl is hinged to the pawl mounting frame.

[0019] Optionally, the first bracket includes a first mounting plate and two first connecting parts extending toward the second bracket on both sides of the first mounting plate, and the gear teeth are arranged on end surfaces of the first connecting parts facing the second bracket.

[0020] Optionally, the second bracket includes a second mounting plate and two second connecting portions extending toward the first bracket on both sides of the second mounting plate, and the pawl mounting frame is disposed on the second connecting portions.

[0021] Optionally, the first mounting plate, the first connecting portion, the second connecting portion and the second mounting plate together form a mounting space, and the ratchet limiting structure and the torsion spring are both located in the mounting space.

[0022] By locating the ratchet limiting structure and the torsion spring in the installation space, the ratchet limiting structure and the torsion spring can be protected by the peripheral structure. At the same time, the occurrence of structural failure caused by the jamming of foreign objects and the occurrence of pinching of users can be reduced.

[0023] On the other hand, a display screen installation structure is provided, comprising a display screen and an external device, wherein the display screen is installed on the external device via the angle-adjustable hinge structure as described above.

[0024] In another aspect, a treadmill is provided, comprising a treadmill body and a display screen, wherein the display screen is mounted on the treadmill body via the above-mentioned angle-adjustable hinge structure. The display screen is mounted on the treadmill using the above-mentioned angle-adjustable hinge structure, which facilitates angle adjustment while avoiding the influence of vibration generated during the operation of the treadmill on the orientation of the display screen, thereby improving the user experience.

[0025] The beneficial effects of the present application are as follows: in the present application, the first bracket and the second bracket are hingedly connected by the first rotating shaft, so that the first bracket and the second bracket can rotate relative to each other, the torsion spring is used to provide a rotational driving force for the relative rotation of the first bracket and the second bracket, and the ratchet limiting structure is used to limit the relative rotation of the first bracket and the second bracket, so that under the limiting action of the ratchet limiting structure, the first bracket can only rotate in a certain direction relative to the second bracket, and cannot rotate in the opposite direction, the pawl limits the first bracket in this direction, and cooperates with the tension of the reset tension spring to act on the first bracket together, so that when the force applied to the first bracket does not exceed the elastic force of the reset tension spring, the first bracket can maintain a relatively stable position with the second bracket, thereby avoiding unnecessary position deflection of the first bracket relative to the second bracket caused by vibration. Since the force applied by the reset tension spring is an elastic force, the deformation caused by vibration can also be quickly restored, and irreversible position changes will not be caused, so that the first bracket and the second bracket can be reliably maintained at the preset relative position for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present application is further described in detail below based on the drawings and embodiments.

[0027] Figure 1 A schematic diagram of the three-dimensional structure of the angle-adjustable hinge structure described in an embodiment of the present application;

[0028] Figure 2 A schematic side view of the angle-adjustable hinge structure described in an embodiment of the present application;

[0029] Figure 3 This is a schematic diagram of the exploded state of the angle-adjustable hinge structure described in an embodiment of the present application;

[0030] Figure 4 This is a schematic diagram of the exploded state of the first bracket and the torsion spring according to the embodiment of the present application;

[0031] Figure 5 This is a schematic diagram of a three-dimensional state of the second bracket described in an embodiment of the present application;

[0032] Figure 6 A schematic diagram of a working state structure of the angle-adjustable hinge structure described in an embodiment of the present application;

[0033] Figure 7 This is a structural schematic diagram of another working state of the angle-adjustable hinge structure described in the embodiment of the present application;

[0034] Figure 8 This is a structural schematic diagram of another working state of the angle-adjustable hinge structure described in the embodiment of the present application;

[0035] Fig. 9 This is a structural schematic diagram of another working state of the angle-adjustable hinge structure described in the embodiment of the present application;

[0036] Fig.10 This is a schematic diagram of the structure of the pawl described in the embodiment of the present application.

[0037] In the figure:

[0038] 100, first bracket; 110, first mounting plate; 120, first connecting part; 121, torsion spring mounting hole; 200, second bracket; 210, second mounting plate; 211, torsion spring baffle; 212, tension spring hook; 220, second connecting part; 300, bolt; 310, nut; 320, gasket; 400, torsion spring; 510, gear teeth; 520, pawl; 521, limiting surface; 522, guide surface; 530, pawl mounting bracket; 531, hinge shaft; 532, fixing cap; 600, reset tension spring; 700, installation space. DETAILED DESCRIPTION

[0039] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0040] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0041] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] Treadmills have been widely used as fitness equipment. With the development of intelligent electronic technology, installing a display screen on a treadmill to provide users with exercise information, entertainment functions, and control functions has become a common configuration of treadmills. However, since a treadmill is usually not limited to one person, different users have different requirements for the orientation of the display screen due to differences in height and usage habits. Therefore, the installation angle of the display screen usually installed on the treadmill is adjustable. In the case where the display screen and the treadmill are not fixedly connected, on the one hand, the installation structure of the display screen and the treadmill is required to facilitate the adjustment of the display screen angle. On the other hand, it is also necessary to avoid changes in the orientation of the display screen due to unstable installation due to the vibration of the treadmill, which affects the use.

[0043] Most existing treadmills use a rotating shaft composed of a spring and a damping plate to adjust the angle between the display screen and the treadmill body. The spring damping rotating shaft fixes the rotation angle by the friction force generated by pressing the damping plate. During the operation of the treadmill, the vibration of the treadmill will cause the angle of the screen fixed by the rotating shaft to change, affecting the user's experience. In addition, long-term vibration environment will affect the life of the rotating shaft. When the service life exceeds the limit, the angle of the screen can no longer be fixed and adjusted.

[0044] like Figure 1-5 As shown, the embodiment of the present application provides an angle-adjustable hinge structure including:

[0045] A second bracket 200, on which a first rotating shaft is disposed;

[0046] The first bracket 100 is hinged to the second bracket 200 via the first rotating shaft;

[0047] A torsion spring 400 and a ratchet limiting structure are provided between the first bracket 100 and the second bracket 200;

[0048] The torsion spring 400 is wound around the first rotating shaft, one end of which is connected to the first bracket 100, and the other end of which is connected to the second bracket 200, and is used to drive the first bracket 100 to rotate relative to the second bracket 200 along the second direction;

[0049] The ratchet limiting structure includes a pawl 520 and a gear tooth 510, wherein the gear tooth 510 is arranged on the first bracket 100, and the pawl 520 can be rotatably installed on the second bracket 200. One end of the pawl 520 cooperates with the gear tooth 510, and the other end is connected to the reset spring 600. The ratchet limiting structure is configured to allow the first bracket 100 to rotate relative to the second bracket 200 in a first direction around the axis of the first rotating shaft, and prevent the first bracket 100 from rotating relative to the second bracket 200 in a second direction around the axis of the first rotating shaft, wherein the second direction is opposite to the first direction.

[0050] Specifically, refer to Figure 6-9 As shown, in the embodiment of the present application, the first direction is defined as the clockwise direction as shown in the figure, and the second direction is the counterclockwise direction as shown in the figure.

[0051] In the present application, the first bracket 100 and the second bracket 200 are hingedly connected by a first rotating shaft, so that the first bracket 100 and the second bracket 200 can rotate relative to each other, and the torsion spring 400 is used to provide a rotational driving force for the relative rotation of the first bracket 100 and the second bracket 200. The ratchet limiting structure is used to limit the relative rotation of the first bracket 100 and the second bracket 200, so that under the limiting action of the ratchet limiting structure, the first bracket 100 can only rotate in a certain direction relative to the second bracket 200, and cannot rotate in the opposite direction. The pawl mounting frame 530 limits the first bracket 100 in this direction, and cooperates with the tension of the reset tension spring 600 to act on the first bracket 100, so that when the force applied to the first bracket 100 does not exceed the elastic force of the reset tension spring 600, the first bracket 100 can maintain a relatively stable position with the second bracket 200, thereby avoiding unnecessary position deflection of the first bracket 100 relative to the second bracket 200 due to vibration. Since the force applied by the return spring 600 is an elastic force, the deformation caused by vibration can be quickly restored without causing irreversible position changes, so that the first bracket 100 and the second bracket 200 can be reliably maintained in the preset relative position for a long time.

[0052] Specifically, refer to Figure 1-5 As shown, the first bracket 100 is provided with a torsion spring mounting hole 121, the second bracket 200 is provided with a torsion spring blocking piece 211, and the torsion spring 400 is wound around the first rotating shaft, with one end inserted into the torsion spring mounting hole 121 and the other end hung on the torsion spring blocking piece 211. The torsion spring 400 is installed through the torsion spring blocking piece 211 and the torsion spring mounting hole 121 to achieve torsion drive between the first bracket 100 and the second bracket 200.

[0053] It should be noted that one end and the other end of the torsion spring 400 in the present application do not simply refer to the two ends of the torsion spring 400, but the torsion spring 400 is used to connect the two force-bearing ends of the first bracket 100 and the second bracket 200, respectively. Figure 1-5 As shown, the end of the torsion spring 400 inserted into the torsion spring mounting hole 121 in the embodiment of the present application has two plug-in parts, which are respectively inserted into the other two torsion spring mounting holes 121, and the end connected to the torsion spring blocking piece 211 is hung on the torsion spring blocking piece 211.

[0054] The torsion spring stopper 211 in the present application may be arranged in various forms. In an optional embodiment of the present application, the torsion spring stopper 211 is a convex block arranged on the surface of the second bracket 200 facing the first bracket 100. The convex block is welded to the surface of the second bracket 200, or the convex block is riveted to the surface of the second bracket 200.

[0055] In other embodiments of the present application, the torsion spring baffle 211 and the second bracket 200 may be an integral structure. For example, in an optional embodiment, the torsion spring baffle 211 is flush with the surface of the second bracket 200 facing the first bracket 100, that is, a U-shaped opening is opened on the second bracket 200 by material reduction processing to allow the end of the torsion spring 400 connected to the second bracket 200 to pass through, and the second bracket 200 body inside the U-shaped opening forms the torsion spring baffle 211, so that the torsion spring 400 is hung on the torsion spring baffle 211 after passing through the opening.

[0056] Or, in another alternative embodiment, referring to Figure 5 As shown, the torsion spring blocking piece 211 protrudes from the surface of the second bracket 200 facing the first bracket 100 . The difference between this embodiment and the previous embodiment is that in this embodiment, part of the second bracket 200 is folded to form the torsion spring blocking piece 211 .

[0057] Reference Figure 1-3 As shown, in an optional embodiment of the present application, the first rotating shaft is a bolt 300, and the bolt 300 cooperates with a nut 310 to hinge the first bracket 100 and the second bracket 200, and the first bracket 100 and the second bracket 200 are limited between the nut 310 and the nut of the bolt 300. In order to ensure the stability of the connection, a gasket 320 is sleeved on the bolt 300 in the present application, and the gasket 320 is located between the surfaces of the first bracket 100 and the second bracket 200 that are in contact with each other.

[0058] Further, in order to realize the installation of the pawl 520, refer to Figure 1-3 As shown, a pawl mounting frame 530 is provided on the second bracket 200, and the pawl 520 is hinged on the pawl mounting frame 530. In this embodiment, the pawl mounting frame 530 includes a hinge shaft 531 and a fixing cap 532. A through hole is provided on the second bracket 200 for the hinge shaft 531 to pass through. After one end of the hinge shaft 531 passes through the through hole, it cooperates with the fixing cap 532 to fix the hinge shaft 531 on the second bracket 200.

[0059] Reference Figure 4 As shown, in the present application, the first bracket 100 includes a first mounting plate 110 and two first connecting parts 120 extending toward the second bracket 200 on both sides of the first mounting plate 110, and the gear 510 is arranged on the end surface of the first connecting part 120 facing the second bracket 200.

[0060] In the present application, by directly setting the gear 510 on the first bracket 100, the number of components is reduced, the installation steps are simplified, and the control of the limit and rotation is made more reliable.

[0061] Optional, see Figure 5 As shown, in the present application, the second bracket 200 includes a second mounting plate 210 and two second connecting parts 220 extending toward the first bracket 100 on both sides of the second mounting plate 210, and the pawl mounting frame 530 is arranged on the second connecting part 220. One end of the reset tension spring 600 is connected to the pawl mounting frame 530, and the other end is connected to the second mounting plate through the tension spring hook 212 located on the second mounting plate 210.

[0062] It is understandable that disposing the pawl mounting frame 530 on the second connecting portion 220 is not a limitation of the present application, and in other embodiments, the pawl mounting frame 530 may be directly mounted on the second mounting plate 210 .

[0063] Specifically, in this embodiment, the first mounting plate 110, the first connecting portion 120, the second connecting portion 220 and the second mounting plate 210 together form an installation space 700, and the ratchet limiting structure and the torsion spring 400 are both located in the installation space 700. By locating the ratchet limiting structure and the torsion spring 400 in the installation space 700, the ratchet limiting structure and the torsion spring 400 can be protected by the peripheral structure, and at the same time, the occurrence of structural failure caused by foreign objects being stuck in and the occurrence of pinching of users can be reduced.

[0064] Reference Figure 6-10 As shown, in the embodiment of the present application, tooth grooves are formed between adjacent gear teeth 510, and the pawl 520 has a limiting surface 521 and a guide surface 522 on opposite sides of the end portion facing the first bracket 100, wherein the limiting surface 521 is used to contact the first bracket 100 during the process of adjusting the rotational position of the first bracket 100 along the first direction; the guide surface 522 is used to contact the first bracket 100 during the process of the first bracket 100 rotating to the extreme position relative to the second bracket 200 around the first direction and disengaging from the pawl 520, and then rotating relative to the second bracket 100 in the second direction for reset. When the pawl 520 is rotated in the first direction, the guide surface 522 will not be stuck in the tooth groove, so no limitation will occur.

[0065] Specifically, the working process of the angle-adjustable hinge structure in this application can be referred to Figure 6-9 The instructions shown are as follows:

[0066] exist Figure 6In the shown state, the first bracket 100 is hinged to the second bracket 200, and the gear teeth 510 on the first bracket 100 cooperate with the pawl 520, so that the first bracket 100 can rotate along the first direction relative to the second bracket 200. In the process of controlling the first bracket 100 to rotate relative to the second bracket 200 by external force, the gear teeth 510 located in the first bracket 100 facing the pawl 520 contacts the limiting surface 521 to move the end of the pawl 520 that cooperates with the gear teeth 510, so that the pawl 520 rotates around the hinge shaft 531. In this state, the rotation direction of the pawl 520 is opposite to the rotation direction of the first bracket 100, and the end of the pawl 520 away from the gear 510 is connected to the reset spring 600. The reset spring 600 applies a force to the pawl 520 so that the pawl 520 is always attached to the first bracket 100 to ensure that the pawl 520 limits the rotation of the first bracket 100.

[0067] The first bracket 100 rotates in the first direction and repeats the process of the gear 510 shifting the pawl 520 and the reset spring 600 pulling the pawl 520 to fit on the first bracket 100. When the first bracket 100 rotates to the required position and stops applying the force to rotate in the first direction, the first bracket 100 generates a tendency to move in the direction opposite to the first direction (the second direction) under the force of the torsion spring 400. At this time, the first bracket 100 shifts the pawl 520 to rotate around the first direction, and the limiting surface 521 abuts against the tooth groove. The pawl 520 located between the first bracket 100 and the first rotating shaft cannot pass through the gap between the first bracket 100 and the first rotating shaft, thereby limiting the first bracket 100 from rotating in the first direction. Therefore, when the force applied to the first bracket 100 to rotate in the first direction does not exceed the elastic force of the torsion spring 400, under the joint action of the torsion spring 400 and the pawl 520 connected with the reset spring 600, the first bracket 100 will maintain the relative position with the second bracket 200 unchanged.

[0068] Reference Figure 7 , 8 As shown, when the first bracket 100 is along Figure 6 After the gear 510 rotates to the limit position in the first direction, the gear 510 is disengaged from the pawl 520. At this time, the pawl 520 is pulled by the return spring 600 to the limit position. Figure 7 The position of the pawl 520 is shown by the solid line. In this position, the pawl 520 no longer restricts the rotation of the first bracket 100. The first bracket 100 moves along the Figure 7 , 8 The first bracket 100 rotates in the second direction. During the rotation, the first bracket 100 contacts the guide surface 522 of the pawl 520. The guide surface 522 does not affect the rotation of the first bracket 100. Fig. 9 After reaching the position shown, the first bracket 100 is controlled to move along Fig. 9 When the gear 510 rotates in the first direction, the gear tooth 510 will move the pawl 520 through the limiting surface 521 again, thereby forming a one-way limiting effect.

[0069] It can be understood that the various figures in the embodiments of the present application are only for schematic illustration, and the positional relationship between the pawl 520 and the gear tooth 510, and the specific structure of the pawl 520 to achieve the one-way limiting function are common knowledge of those skilled in the art. Those skilled in the art can make appropriate selections based on actual needs, and no specific restrictions are made in the present application.

[0070] At the same time, an embodiment of the present application also provides a display screen installation structure, including a display screen and an external device, wherein the display screen is installed on the external device via the angle-adjustable hinge structure as described above.

[0071] Furthermore, the present application also provides a treadmill, comprising a treadmill body and a display screen, wherein the display screen is mounted on the treadmill body via the angle-adjustable hinge structure as described above, wherein the first bracket 100 is used to fix the display screen, and the second bracket 200 is used to be fixedly connected to the treadmill body.

[0072] The display screen is installed on the treadmill using the above-mentioned angle-adjustable hinge structure, which facilitates angle adjustment and avoids the influence of vibration generated during the operation of the treadmill on the orientation of the display screen, thereby improving the user experience.

[0073] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0074] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0075] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0076] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. An angle-adjustable hinge structure, characterized in that: include: A second bracket (200) on which a first rotating shaft is disposed; A first bracket (100) is hingedly connected to the second bracket (200) via the first rotating shaft; A torsion spring (400) and a ratchet limiting structure are provided between the first bracket (100) and the second bracket (200); The torsion spring (400) is wound around the first rotating shaft, one end of which is connected to the first bracket (100) and the other end of which is connected to the second bracket (200), and is used to drive the first bracket (100) to rotate relative to the second bracket (200) along a second direction; The ratchet limiting structure comprises a pawl (520) and a gear tooth (510), wherein the gear tooth (510) is arranged on the first bracket (100), and the pawl (520) can be rotatably installed on the second bracket (200), one end of the pawl (520) cooperates with the gear tooth (510), and the other end is connected to a reset spring (600), and the ratchet limiting structure is configured to allow the first bracket (100) to rotate relative to the second bracket (200) around the axis of the first rotating shaft in a first direction, and prevent the first bracket (100) from rotating relative to the second bracket (200) around the axis of the first rotating shaft in a second direction, wherein the second direction is opposite to the first direction.

2. The angle-adjustable hinge structure according to claim 1, characterized in that: The first bracket (100) is provided with a torsion spring mounting hole (121), the second bracket (200) is provided with a torsion spring blocking piece (211), the torsion spring (400) is wound around the first rotating shaft, one end of the torsion spring is inserted into the torsion spring mounting hole (121), and the other end is hung on the torsion spring blocking piece (211).

3. The angle-adjustable hinge structure according to claim 2, characterized in that: The torsion spring blocking piece (211) is a protrusion arranged on the surface of the second bracket (200) facing the first bracket (100).

4. The angle-adjustable hinge structure according to claim 3, characterized in that: The protrusion is welded to the surface of the second bracket (200), or the protrusion is riveted to the surface of the second bracket (200).

5. The angle-adjustable hinge structure according to claim 2, characterized in that: The torsion spring blocking piece (211) and the second bracket (200) are an integral structure; the torsion spring blocking piece (211) is flush with a surface of the second bracket (200) facing the first bracket (100), or the torsion spring blocking piece (211) protrudes from a surface of the second bracket (200) facing the first bracket (100).

6. The angle-adjustable hinge structure according to any one of claims 1 to 5, characterized in that: The first rotating shaft is a bolt (300), and the bolt (300) cooperates with a nut (310) to hinge the first bracket (100) and the second bracket (200), and limits the first bracket (100) and the second bracket (200) between the nut (310) and the nut of the bolt (300).

7. The angle-adjustable hinge structure according to any one of claims 1 to 5, characterized in that: A pawl mounting frame (530) is provided on the second bracket (200), and the pawl (520) is hinged on the pawl mounting frame (530).

8. The angle-adjustable hinge structure according to claim 7, characterized in that: The first bracket (100) comprises a first mounting plate (110) and two first connecting parts (120) extending on both sides of the first mounting plate (110) towards the second bracket (200), and the gear teeth (510) are arranged on the end surface of the first connecting part (120) facing the second bracket (200).

9. The angle-adjustable hinge structure according to claim 8, characterized in that: The second bracket (200) comprises a second mounting plate (210) and two second connecting parts (220) extending towards the first bracket (100) on both sides of the second mounting plate (210), and the pawl mounting frame (530) is arranged on the second connecting part (220).

10. The angle-adjustable hinge structure according to claim 9, characterized in that: The first mounting plate (110), the first connecting portion (120), the second connecting portion (220) and the second mounting plate (210) together form an installation space (700), and the ratchet limiting structure and the torsion spring (400) are both located in the installation space (700).

11. A display screen installation structure, characterized in that: It comprises a display screen and an external device, wherein the display screen is mounted on the external device via the angle-adjustable hinge structure described in any one of claims 1 to 10.

12. A treadmill, characterized in that: It comprises a treadmill body and a display screen, wherein the display screen is mounted on the treadmill body via an angle-adjustable hinge structure according to any one of claims 1 to 10.

Images