Pitch angle adjusting device and support

Abstract

The utility model is suitable for the technical field of electronic equipment accessories, and provides a pitching angle adjusting device and a support, and the pitching angle adjusting device comprises a fixed assembly, a movable assembly, an elastic assembly and a pre-tightening assembly. The fixed assembly comprises a fixed body and a first arc-shaped structure arranged on the fixed body, the movable assembly comprises a movable body and a second arc-shaped structure arranged on the movable body, and the second arc-shaped structure is slidably installed on the first arc-shaped structure in the circumferential direction of the first axis. The elastic assembly is connected with the fixed assembly and the movable assembly. The pre-tightening assembly is installed on one of the fixed assembly and the movable assembly, and the pre-tightening assembly abuts against the other one so that the relative position of the first arc-shaped structure and the second arc-shaped structure can be limited when the pre-tightening assembly is not subjected to external force. The gravity of the external equipment is balanced through the elastic assembly, a user can adjust the pitching angle of the external equipment only by providing certain thrust to the external equipment, and the operation process is simple and saves labor.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment accessories, and more specifically, to a pitch angle adjustment device and a bracket. Background Art

[0002] With the development of science and technology and the improvement of people's living standards, televisions are used more and more frequently as the main tool for family entertainment and information acquisition. In order to adapt to the viewing habits of different users and different decoration space layouts, the pitch angle adjustment of the TV screen is particularly important. By adjusting the pitch angle of the TV screen, it can not only improve the user's viewing experience, but also reduce visual fatigue and help protect the user's eyesight.

[0003] The commonly seen brackets on the market that can adjust the pitch angle of a TV screen mainly include a bracket body, a connecting structure for mounting the TV screen, and a fastening knob. The connecting structure is hinged to the bracket body, and the connecting structure is provided with a single waist groove, through which the fastening knob is connected to the bracket body. With this bracket, in order to prevent the TV screen from tipping over suddenly, the TV needs to be supported during the entire process of adjusting the pitch angle of the TV screen, and then the pitch angle of the TV screen needs to be adjusted by loosening the fastening knob and rotating the TV, and finally the fastening knob needs to be tightened until the TV is stable before the TV can be released. The process of adjusting the TV screen is laborious, and when the TV is large, multiple people are required to operate, which makes the operation difficult. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a pitch angle adjustment device and a bracket, aiming to solve the technical problem in the prior art that the process of adjusting the pitch angle of a TV screen is relatively laborious and difficult to operate.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is to provide a pitch angle adjustment device, comprising:

[0006] A fixing assembly, comprising a fixing body and a first arc-shaped structure, wherein the first arc-shaped structure is arranged on the fixing body;

[0007] A movable assembly, comprising a movable body and a second arc-shaped structure, wherein the second arc-shaped structure is arranged on the movable body; the first arc-shaped structure and the second arc-shaped structure both extend along the circumference of a first axis, the second arc-shaped structure is slidably mounted on the first arc-shaped structure along the circumference of the first axis, and the movable body is used to install external equipment;

[0008] An elastic component, wherein the elastic component is connected to the fixed component and the movable component respectively;

[0009] A pre-tightening component is installed on one of the fixed component and the movable component, and the pre-tightening component abuts against the other one to limit the relative position of the first arc-shaped structure and the second arc-shaped structure when no external force is applied.

[0010] In a possible design, the first arc-shaped structure is an arc-shaped sliding hole, and the second arc-shaped structure is an arc-shaped shaft. The arc-shaped shaft is inserted into the arc-shaped sliding hole along the circumference of the first axis.

[0011] In a possible design, the elastic component includes a first connecting member, a second connecting member and an elastic member, the elastic member is located between the first connecting member and the second connecting member, and is respectively connected to the first connecting member and the second connecting member, the first connecting member is connected to the arc axis, the second connecting member is connected to the fixed body, and the initial length of the elastic member is adjustable.

[0012] In a possible design, the elastic component further includes a first adjusting member, the second connecting member is installed on the fixed body through the first adjusting member, and the first adjusting member is used to drive the second connecting member to approach or move away from the first connecting member.

[0013] In a possible design, the fixed body is provided with an arc-shaped guide hole extending circumferentially along the first axis, a connecting hole is provided between the arc-shaped guide hole and the arc-shaped sliding hole, the first connecting member is slidably installed in the arc-shaped guide hole and connected to the arc-shaped shaft via the connecting hole, the second connecting member is installed in the arc-shaped guide hole through the first adjusting member, and the first adjusting member is used to drive the second connecting member to slide along the arc-shaped guide hole.

[0014] In a possible design, a mounting hole connected to the arc-shaped guide hole is provided through the fixed body, the first adjusting member is rotatably mounted on the mounting hole around the axis of the mounting hole, and the first adjusting member is threadedly connected to the second connecting member.

[0015] In a possible design, the fixed body includes a shell and an arc-shaped sleeve extending circumferentially along the first axis, the arc-shaped sliding hole is arranged in the shell, the arc-shaped sleeve is fixedly installed in the arc-shaped sliding hole, and the arc shaft is passed through the inner hole of the arc-shaped sleeve.

[0016] In a possible design, the preload assembly includes an extrusion member, which is movably mounted on the fixed body, and the extrusion member is configured to be pressed against the arc-shaped shaft to limit the relative position of the arc-shaped shaft and the arc-shaped sliding hole.

[0017] In a possible design, the preload assembly further includes a first wedge block, a second wedge block and a second adjusting member movably mounted on the fixed body, the second adjusting member contacts one side of the first wedge block, and the second adjusting member is used to drive the first wedge block to move along the first direction; the second wedge block is located on the side of the first wedge block close to the arc axis in the second direction, and the first direction and the second direction are set at an angle; the first wedge block contacts the second wedge block, and the contact surface between the first wedge block and the second wedge block is set at an angle to the first direction, and the extrusion member is located between the second wedge block and the arc axis.

[0018] The present application also provides a bracket, comprising a bracket body and a pitch angle adjustment device provided by any of the above technical solutions, wherein the fixed body in the pitch angle adjustment device is connected to the bracket body.

[0019] The beneficial effect of the pitch angle adjustment device provided by the present application is that: compared with the prior art, the pitch angle adjustment device of the present application, when an external device (which can be a TV or other display) is installed on the movable body, the external device drives the movable body to move, so that the second arc-shaped structure rotates around the first axis relative to the first arc-shaped structure, that is, the entire movable assembly rotates around the first axis relative to the entire fixed assembly, so that the elastic assembly undergoes elastic deformation, and an elastic force acts on the movable assembly, and the elastic force increases with the increase of the elastic deformation until the elastic force can balance the gravity of the external device. In addition, by abutting the fixed assembly or the movable assembly with the pre-tightening assembly, when no external force is applied, the relative position of the first arc-shaped structure and the second arc-shaped structure can be limited, so that the movable body is fixed relative to the fixed body. It can be seen from this that the pitch angle device provided by the present application can balance the gravity of the external device through the elastic assembly during the process of adjusting the pitch angle of the external device, without the user holding the external device, and only requires the user to provide a certain thrust to the external device, so that the external device rotates around the first axis until the external device is adjusted to a suitable pitch angle. The external device can be fixed at the current pitch angle under the action of the abutment force of the pre-tightening component on the fixed component or the movable component, and the operation process is simple and labor-saving.

[0020] The beneficial effect of the bracket provided in the present application is that, compared with the prior art, since the bracket of the present application includes the pitch angle adjustment device provided by any of the above technical solutions, it has at least all the above beneficial effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 1 It is a perspective structural schematic diagram of a pitch angle adjustment device provided by an embodiment of the present application;

[0023] Figure 2 It is a perspective structural schematic diagram of a partial structure of a pitch angle adjustment device provided by an embodiment of the present application;

[0024] Figure 3 It is a schematic diagram of the exploded parts of a pitch angle adjustment device provided by an embodiment of the present application;

[0025] Figure 4 yes Figure 3 A partial enlarged schematic diagram of point D in the middle;

[0026] Figure 5 is a schematic diagram of a movable body in a pitch angle adjustment device provided by an embodiment of the present application when the movable body is tilted upward;

[0027] Figure 6 It is a schematic diagram of the assembly of some structures and external equipment in a pitch angle adjustment device provided by an embodiment of the present application;

[0028] Figure 7 yes Figure 6 A partial enlarged schematic diagram of point E in the middle;

[0029] Figure 8 is a schematic diagram of a movable body in a pitch angle adjustment device provided by an embodiment of the present application when the movable body is pitching downward;

[0030] Fig. 9 It is a schematic exploded view of parts of a pre-tightening assembly in a pitch angle adjustment device provided by an embodiment of the present application;

[0031] Fig.10 It is a schematic diagram of the assembly of a bracket and external equipment provided by an embodiment of the present application.

[0032] The reference numerals in the above drawings are as follows:

[0033] 10. Bracket body; 11. Base; 12. Support column; 20. External equipment;

[0034] 100, fixing assembly; 110, housing; 111, first half shell; 112, second half shell; 130, arc-shaped sleeve; 140, connecting structure; 150, first arc-shaped structure; 160, arc-shaped guide hole; 170, connecting hole; 180, mounting groove; 190, mounting hole;

[0035] 200, movable component; 210, movable body; 220, second arc-shaped structure;

[0036] 300, elastic component; 310, first connecting member; 320, second connecting member; 330, elastic member; 340, first adjusting member;

[0037] 400, preload assembly; 410, extrusion member; 420, first wedge block; 430, second wedge block; 440, second adjustment member. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] In order to illustrate the technical solution described in this application, a detailed description is given below in conjunction with specific drawings and embodiments.

[0043] like Figures 1 to 3 As shown, an embodiment of the present application provides a pitch angle adjustment device, including a fixed component 100, a movable component 200, an elastic component 300 and a preload component 400. The fixed component 100 includes a fixed body and a first arc-shaped structure 150, and the first arc-shaped structure 150 is arranged on the fixed body. The movable component 200 includes a movable body 210 and a second arc-shaped structure 220, and the second arc-shaped structure 220 is arranged on the movable body 210. The first arc-shaped structure 150 and the second arc-shaped structure 220 both extend along the circumference of the first axis, and the second arc-shaped structure 220 is slidably installed on the first arc-shaped structure 150 along the circumference of the first axis, and the movable body 210 is used to install the external device 20. The elastic component 300 is connected to the fixed component 100 and the movable component 200 respectively; the pre-tensioning component 400 is movably installed on one of the fixed component 100 and the movable component 200, and the pre-tensioning component 400 abuts against the other to limit the relative position of the first arc-shaped structure 150 and the second arc-shaped structure 220 when no external force is applied.

[0044] In the pitch angle adjustment device of the embodiment of the present application, when the external device 20 is installed on the movable body 210, the external device 20 drives the movable body 210 to move, so that the second arc-shaped structure 220 rotates around the first axis relative to the first arc-shaped structure 150, that is, the entire movable assembly 200 rotates around the first axis relative to the entire fixed assembly 100, so that the elastic assembly 300 undergoes elastic deformation and exerts an elastic force on the movable assembly 200, and the elastic force increases with the increase of the elastic deformation until the elastic force can balance the gravity of the external device 20. In addition, by abutting the fixed assembly 100 or the movable assembly 200 with the pre-tightening assembly 400, when no external force is applied, the relative position of the first arc-shaped structure 150 and the second arc-shaped structure 220 can be limited, so that the movable body 210 is fixed relative to the fixed body. It can be seen that the pitch angle device provided in the embodiment of the present application can balance the gravity of the external device 20 through the elastic component 300 during the process of adjusting the pitch angle of the external device 20, without the user holding the external device 20, and only needs the user to provide a certain thrust (or pull) to the external device 20, so that the external device 20 rotates around the first axis until the external device 20 is adjusted to a suitable pitch angle. The external device 20 can be fixed at the current pitch angle under the action of the abutment force of the pre-tightening component 400 on the fixed component 100 or the movable component 200, and the operation process is simple and labor-saving.

[0045] It is worth noting that if the thrust acting on the external device 20 is in the same direction as the elastic force of the elastic component 300 acting on the movable component 200, the thrust only needs to overcome the preload force of the preload component 400 acting on the fixed component 100 or the movable component 200; if the thrust acting on the external device 20 is in a different direction from the elastic force of the elastic component 300 acting on the movable component 200, the thrust only needs to overcome the elastic force generated by the further elastic deformation of the elastic component 300 on the basis of overcoming the preload force of the preload component 400. In any of the above situations, since the size of the external device 20 is usually large, when the thrust is applied to the top or bottom of the external device 20, the distance between the point of action of the thrust and the first axis can be much greater than the distance between the point of action of the preload force on the movable component 200 and the first axis, and much greater than the distance between the point of action of the elastic force of the elastic component 300 on the movable component 200 and the first axis. According to the lever principle, the thrust force which is much smaller than the sum of the preload force of the preload component 400 and the elastic force of the elastic component 300 can adjust the pitch angle of the external device 20. Therefore, it can be seen that the pitch angle adjustment device provided in the embodiment of the present application can adjust the pitch angle of the external device 20 in a simpler and more labor-saving manner.

[0046] The pitch angle adjustment device provided in the embodiment of the present application can be applied to televisions, computer monitors or other monitors, etc., and is not limited here. In practical applications, elastic components 300 with different elastic coefficients can be selected according to different types of external devices 20 to ensure that the maximum elastic force that the elastic component 300 can provide is sufficient to balance the gravity of the external device 20.

[0047] In the embodiment of the present application, the first axis can be a horizontal axis or an inclined axis, and the inclined axis is set at a certain angle to the horizontal direction and the vertical direction respectively. The following description is taken as an example that the first axis is a horizontal axis.

[0048] In the embodiment of the present application, the first arc-shaped structure 150 can be a virtual structure such as a hole or a groove, or a real structure such as a slider or a shaft. When the first arc-shaped structure 150 is a virtual structure, the elastic component 300 is specifically connected to the fixed body in the fixed component 100, and when the first arc-shaped structure 150 is a real structure, the elastic component 300 can be connected to the first arc-shaped structure 150 or the fixed body in the fixed component 100. Similarly, the second arc-shaped structure 220 can be a virtual structure such as a hole or a groove, or a real structure such as a slider or a shaft. When the second arc-shaped structure 220 is a virtual structure, the elastic component 300 is specifically connected to the movable body 210 in the movable component 200, and when the second arc-shaped structure 220 is a real structure, the elastic component 300 can be connected to the second arc-shaped structure 220 or the movable body 210 in the movable component 200. When the second arc structure 220 rotates relative to the first arc structure 150, the second arc structure 220 drives the movable body 210 to rotate relative to the first arc structure 150, that is, the entire movable component 200 rotates relative to the entire fixed component 100, so that the elastic component 300 undergoes elastic deformation.

[0049] In some embodiments, the pre-tightening assembly 400 is installed on the fixed assembly 100 and abuts against the movable assembly 200. The pre-tightening assembly 400 exerts a pre-tightening force on the movable assembly 200 so that the movable assembly 200 is fixed relative to the fixed assembly 100 when no external force is applied. The pre-tightening assembly 400 can be installed on the fixed body or the first arc-shaped structure 150, and the pre-tightening assembly 400 can abut against the movable body 210 in the movable assembly 200 or the second arc-shaped structure 220 in the movable assembly 200.

[0050] In other embodiments, the pre-tightening assembly 400 is installed on the movable assembly 200 and abuts against the fixed assembly 100, and the pre-tightening assembly 400 exerts a pre-tightening force on the fixed assembly 100, which also has the same effect as described above. The pre-tightening assembly 400 can be specifically installed on the movable body 210, or on the second arc-shaped structure 220, and the pre-tightening assembly 400 can abut against the fixed body in the fixed assembly 100, or against the first arc-shaped structure 150 in the fixed assembly 100. For ease of description, the following description is based on the example that the pre-tightening assembly 400 is installed on the fixed body and abuts against the second arc-shaped structure 220.

[0051] In one possible design, Figures 2 to 4As shown, the first arc-shaped structure 150 is an arc-shaped sliding hole, and the second arc-shaped structure 220 is an arc-shaped shaft, and the arc-shaped shaft is arranged in the arc-shaped sliding hole along the circumference of the first axis. Compared with the method of sliding a fastening knob along a single waist groove to adjust the pitch angle in the related art, the arc-shaped shaft can slide along the arc-shaped sliding hole in a larger range, so that the pitch angle range of the external device 20 can be adjusted to be larger. In some examples, the pitch angle adjustment device provided in the embodiment of the present application can adjust the pitch angle range of the external device 20 to -25° to +25°, +25° means that the maximum elevation angle of the external device 20 is 25°, and -25° means that the maximum depression angle of the external device 20 is 25°. In another possible design, the first arc-shaped structure 150 can be an arc-shaped shaft, and the second arc-shaped structure 220 can be an arc-shaped sliding hole. For the convenience of description, the following text is taken as an example that the first arc-shaped structure 150 is an arc-shaped sliding hole and the second arc-shaped structure 220 is an arc-shaped shaft.

[0052] In some embodiments, the movable body 210 includes a VESA (Video Electronics Standards Association) panel, one side of the VESA panel is used to connect with the external device 20, and the other side opposite thereto is connected with the arc axis.

[0053] In some examples, the elastic component 300 is specifically connected to the fixed body and the arc shaft. When the arc shaft rotates around the first axis relative to the arc-shaped sliding hole, the elastic component 300 will undergo elastic deformation. Figure 5 As shown, when the movable body 210 is not equipped with the external device 20 and the pre-tightening component 400 does not exert a pre-tightening force on the movable component 200, the movable body 210 is in the maximum upward position under the elastic force of the elastic component 300. Figure 6 As shown, the external device 20 drives the movable body 210 to rotate downward counterclockwise around the first axis under the action of its own gravity G, so that the arc axis rotates counterclockwise around the first axis, the elastic component 300 undergoes elastic deformation, and the elastic component 300 exerts an elastic force F1 on the arc axis to rotate counterclockwise around the first axis, and the elastic force F1 increases with the increase of the elastic deformation of the elastic component 300. Figure 6 Point A is the location of the center of gravity of the external device 20. Figure 6 Point B is the location of the first axis. Figure 6 Point C is the point of action of the elastic component 300 on the arc axis, L1 is the distance between point A and point B, and L2 is the distance between point C and point B. When F1*L2=G*L1, it means that the elastic force of the elastic component 300 on the arc axis is balanced with the gravity of the external device 20. In this way, when adjusting the pitch angle of the external device 20, the user does not need to hold the external device 20, and the operation process is simpler and more labor-saving.

[0054] In one possible design, Figure 6 and Figure 7 As shown, the elastic component 300 includes a first connecting member 310, a second connecting member 320 and an elastic member 330. The elastic member 330 is located between the first connecting member 310 and the second connecting member 320 and is connected to the first connecting member 310 and the second connecting member 320 respectively. The first connecting member 310 is connected to the arc shaft, and the second connecting member 320 is connected to the fixed body. The initial length of the elastic member 330 is adjustable. The first connecting member 310 rotates around the first axis relative to the second connecting member 320 along with the arc shaft, so that the elastic member 330 is elastically deformed, and the elastic member 330 acts on the first connecting member 310 with an elastic force. Since the first connecting member 310 is connected to the arc shaft, the elastic force of the elastic member 330 on the first connecting member 310 can act on the arc shaft through the first connecting member 310. Therefore, the elastic force of the elastic member 330 on the first connecting member 310 is the elastic force of the elastic component 300 on the movable component 200. It is worth noting that during the installation process, after the external device 20 is installed on the movable body 210, but the pre-tightening component 400 does not apply a pre-tightening force to the movable component 200, the movable body 210 drives the arc shaft to slide relative to the arc-shaped sliding hole under the action of the gravity of the external device 20, so that the elastic member 330 undergoes elastic deformation until the elastic force of the elastic member 330 on the first connecting member 310 is balanced with the gravity of the external device 20. At this time, the length of the elastic member 330 is the initial length of the elastic member 330.

[0055] According to the above embodiment, by adjusting the initial length of the elastic member 330, after the external devices 20 of different weights are installed on the movable body 210, the external devices 20 are balanced in a vertical position under the elastic force of the elastic component 300, that is, the screen of the external device 20 is parallel to the vertical direction. When the external device 20 is installed in place, the pre-tightening component 400 is abutted against the movable component 200, and the pre-tightening force of the pre-tightening component 400 on the movable component 200 is adjusted so that the first arc-shaped structure 150 and the second arc-shaped structure 220 can be relatively fixed when the pitch angle adjustment device is not subjected to external force. On this basis, the user only needs to gently push the external device 20 to adjust the pitch angle of the external device 20.

[0056] Optionally, the elastic member 330 may be a spring, a rubber column or other structures with elastic deformation capability, which is not limited here.

[0057] In the embodiment of the present application, the elastic force exerted by the elastic component 300 on the movable component 200 can be a pulling force or a pushing force, that is, the elastic force exerted by the elastic member 330 on the first connecting member 310 can be a pulling force or a pushing force. Figure 7As shown, the first connecting member 310 may be located above the second connecting member 320. When the external device 20 is mounted on the movable body 210, the movable body 210 drives the first connecting member 310 to rotate counterclockwise around the first axis and away from the second connecting member 320. In this example, the elastic force of the elastic member 330 on the first connecting member 310 is specifically a pulling force for pulling the movable body 210 to rotate clockwise around the first axis. In other examples, the first connecting member 310 may also be located below the second connecting member 320. When the external device 20 is mounted on the movable body 210, the movable body 210 drives the first connecting member 310 to rotate counterclockwise around the first axis and close to the second connecting member 320. In this example, the elastic force of the elastic member 330 on the first connecting member 310 is specifically a thrust for pushing the movable body 210 to rotate clockwise around the first axis.

[0058] The following description takes the example that the first connecting member 310 is located above the second connecting member 320. When the external device 20 is installed on the movable body 210, the elastic force exerted by the elastic member 330 on the first connecting member 310 is a pulling force for pulling the movable body 210 to rotate clockwise around the first axis.

[0059] like Figure 5 (External device 20 is not shown in the figure) and Figure 6 As shown in FIG. 1 , if the external device 20 needs to be tilted upward, a driving force F2 rotating clockwise around the first axis is applied to the external device 20, and the distance between the position where F2 acts on the external device 20 and the center of gravity of the external device 20 is L3. In the process of tilting the external device 20 upward, the direction of the pre-tightening force applied by the pre-tightening component 400 to the arc shaft is the direction of counterclockwise rotation around the first axis. Figure 6 In the figure, when the external device 20 is tilted upward, the preload force is indicated by arrow F4, and the distance between the point where the preload force acts on the arc axis and the first axis is L5. When F1*L2+F2*L3>G*L1+F4*L5, the external device 20 can be rotated upward around the first axis. Because the elastic force of the elastic member 330 on the first connecting member 310 is balanced with the gravity of the external device 20 before the pitch angle of the external device 20 is adjusted, and because the external device 20 is usually a large device such as a television or a computer monitor, L3 is usually much larger than L5. Therefore, the external device 20 can be tilted upward by simply pushing or pulling the external device 20.

[0060] like Figure 6 and Figure 8(The external device 20 is not shown in the figure), if the external device 20 needs to be tilted down, a driving force F3 is applied to the external device 20 to rotate counterclockwise around the first axis, and the distance between the position where F3 acts on the external device 20 and the center of gravity of the external device 20 is L4. In the process of tilting the external device 20 down, the direction of the pre-tightening force applied by the pre-tightening component 400 to the arc shaft is the direction of clockwise rotation around the first axis. Figure 6 In the figure, when the external device 20 is tilted downward, the preload force is shown by the arrow F4′. When G*L1+F3*L4>F1*L2+F4′*L5, the external device 20 can be rotated downward around the first axis. Since the elastic force of the elastic member 330 on the first connecting member 310 is balanced with the gravity of the external device 20 before the pitch angle of the external device 20 is adjusted, it is only necessary to overcome the elastic force increased by the further elastic deformation of the elastic member 330 and the preload force of the preload assembly 400 on the arc axis. And since the external device 20 is usually a large device such as a television or a computer monitor, L4 is usually much larger than L2 and L5. In this way, the user can overcome the elastic force increased by the further elastic deformation of the elastic member 330 by gently pushing or pulling the external device 20, so that the external device 20 tilts downward.

[0061] In summary, it can be seen that the pitch angle adjustment device provided in the embodiment of the present application is more labor-saving in the operation of adjusting the pitch angle of the external device 20.

[0062] In some embodiments, Figure 7 As shown, the elastic component 300 also includes a first adjusting member 340, and the second connecting member 320 is installed on the fixed body through the first adjusting member 340. The first adjusting member 340 is used to drive the second connecting member 320 to approach or move away from the first connecting member 310 to facilitate adjusting the initial length of the elastic member 330.

[0063] In one possible design, Figure 7 As shown, the fixed body is provided with an arc-shaped guide hole 160 extending in the circumferential direction of the first axis, a connecting hole 170 is provided between the arc-shaped guide hole 160 and the arc-shaped sliding hole, the first connecting member 310 is slidably installed in the arc-shaped guide hole 160 and connected to the arc-shaped shaft via the connecting hole 170, and the second connecting member 320 is installed in the arc-shaped guide hole 160 through the first adjusting member 340, and the first adjusting member 340 is used to drive the second connecting member 320 to slide along the arc-shaped guide hole 160. In this arrangement, the arc-shaped guide hole 160 is provided to guide the movement of the first connecting member 310 and the second connecting member 320. In the embodiment of the present application, the connecting hole 170 also extends in the circumferential direction of the first axis, so that the part of the first connecting member 310 extending into the connecting hole 170 can smoothly rotate around the first axis.

[0064] In some embodiments, the arc guide hole 160 can be arranged on the side of the arc slide hole close to the movable body 210; or, it can also be arranged on the side of the arc slide hole away from the movable body 210; or, it can also be arranged on the side of the arc slide hole in the extension direction of the first axis.

[0065] In some embodiments, the number of the elastic members 330 may be multiple, and the multiple elastic members 330 are all located between the first connecting member 310 and the second connecting member 320, and both ends of each elastic member 330 are respectively connected to the first connecting member 310 and the second connecting member 320. Figure 2 and Figure 3 As shown, there are two elastic members 330 , which are spaced apart along the extension direction of the first axis, and both ends of the two elastic members 330 are respectively connected to the first connecting member 310 and the second connecting member 320 .

[0066] In some embodiments, the number of the first connecting member 310 and the second connecting member 320 may also be multiple, and the multiple first connecting members 310 and the multiple second connecting members 320 are all arranged in one-to-one correspondence with the elastic member 330. The multiple elastic members 330 may be located on the same side of the arc-shaped sliding hole, or the multiple elastic members 330 may also be located on different sides of the arc-shaped sliding hole. For example, the number of the elastic members 330, the first connecting member 310 and the second connecting member 320 are all two, one of the elastic members 330 is located on the side of the arc-shaped sliding hole close to the movable body 210, and the other elastic member 330 is located on the side of the arc-shaped sliding hole away from the movable body 210; or, one of the elastic members 330 is located on one side of the arc-shaped sliding hole in the extension direction of the first axis, and the other elastic member 330 is located on the other side of the arc-shaped sliding hole in the extension direction of the first axis.

[0067] In one possible design, Figure 4 As shown, the fixing body is provided with a mounting hole 190 connected with the arc-shaped guide hole 160, and the first adjusting member 340 is rotatably mounted on the mounting hole 190 around the axis of the mounting hole 190, and the first adjusting member 340 is threadedly connected with the second connecting member 320. In this embodiment, the first adjusting member 340 is specifically a screw structure. By screwing the first adjusting member 340, the second connecting member 320 is driven to move along the axial direction of the first adjusting member 340, so that the initial length of the elastic member 330 can be adjusted more accurately.

[0068] In one possible design, Figure 3 and Figure 7As shown, the fixed body includes a housing 110 and an arc-shaped sleeve 130 extending circumferentially along the first axis, an arc-shaped sliding hole is provided in the housing 110, the arc-shaped sleeve 130 is fixedly installed in the arc-shaped sliding hole, and the arc-shaped shaft is passed through the inner hole of the arc-shaped sleeve 130. In this way, the housing 110 and the arc-shaped sleeve 130 can be made of different materials, the housing 110 can be made of a material with high mechanical strength such as metal or alloy; the arc-shaped sleeve 130 can be made of a material with high smoothness, for example, the arc-shaped sleeve 130 can be made of POM (polyformaldehyde). In this way, the support stability of the fixed body is improved, and the smoothness of the arc-shaped shaft moving relative to the arc-shaped sliding hole is also improved.

[0069] In some embodiments, Figure 3 and Figure 5 As shown, the housing 110 includes a first half shell 111 and a second half shell 112, the first half shell 111 is provided with a first arc-shaped groove, the second half shell 112 is provided with a second arc-shaped groove, the first arc-shaped groove and the second arc-shaped groove are opposite, the first half shell 111 and the second half shell 112 are buckled with each other, so that the first arc-shaped groove and the second arc-shaped groove together form an arc-shaped slide groove. This arrangement facilitates the installation of the arc-shaped sleeve 130 in the arc-shaped slide hole. In some embodiments, the arc-shaped sleeve 130 includes a first arc-shaped fastener and a second arc-shaped fastener, the first arc-shaped fastener is installed in the first arc-shaped groove, and the second arc-shaped fastener is installed in the second arc-shaped groove, by buckling the first half shell 111 and the second half shell 112 from opposite sides of the arc-shaped shaft, so that the first arc-shaped fastener and the second arc-shaped fastener form the arc-shaped sleeve 130, and at the same time, the arc-shaped shaft is passed through the inner hole of the arc-shaped sleeve 130.

[0070] In one possible design, Figure 7 As shown, the preload assembly 400 includes an extrusion 410, which is movably mounted on the fixed body, and the extrusion 410 is configured to be pressed against the arc shaft to limit the relative position of the arc shaft and the arc sliding hole. In this arrangement, the extrusion 410 is pressed against the arc shaft, so that the arc shaft is fixed relative to the extrusion 410 through the friction between the extrusion 410 and the arc shaft, so that the arc shaft is confined in the arc sliding hole. With this arrangement, the pitch angle of the external device 20 can be infinitely adjusted, and the adjustment accuracy is higher.

[0071] In some embodiments, the extrusion member 410 can be a screw structure, and a first connecting hole connected to the arc-shaped sliding hole is provided through the fixed body. The extrusion member 410 is threadedly connected to the inner wall of the first connecting hole. The friction force between the extrusion member 410 and the arc-shaped shaft can be adjusted by tightening or loosening the extrusion member 410. The friction force is also the preload force of the preload assembly 400 on the arc-shaped shaft.

[0072] In one possible design, Figure 7 and Fig. 9 As shown, the preload assembly 400 also includes a first wedge block 420, a second wedge block 430 and a second adjusting member 440 movably mounted on the fixed body, the second adjusting member 440 contacts one side of the first wedge block 420, and the second adjusting member 440 is used to drive the first wedge block 420 to move along the first direction; the second wedge block 430 is located on the side of the first wedge block 420 close to the arc axis in the second direction, and the first direction is set at an angle to the second direction; the first wedge block 420 contacts the second wedge block 430, and the contact surface between the first wedge block 420 and the second wedge block 430 is set at an angle to the first direction, and the extrusion member 410 is located between the second wedge block 430 and the arc axis. In this embodiment, the second adjusting member 440 is driven to move in the positive direction of the first direction on one side of the fixed body in the first direction to drive the first wedge block 420 to move in the positive direction of the first direction, so that the second wedge block 430 moves relative to the side of the first wedge block 420 that contacts itself. Since the contact surface between the first wedge block 420 and the second wedge block 430 is set at an angle to the first direction, when the second wedge block 430 moves relative to the side of the first wedge block 420 that contacts itself, the second wedge block 430 is displaced in the second direction to drive the extrusion member 410 to approach the arc axis along the second direction, and the extrusion member 410 is pressed against the arc axis by the first wedge block 420 and the second wedge block 430.

[0073] In the embodiment of the present application, the first direction and the second direction may be arranged at any non-zero angle. Optionally, the first direction and the second direction may be arranged at a 90° angle. The first direction may specifically be the extension direction of the first axis.

[0074] In some embodiments, Figure 4 and Fig. 9 As shown, the second adjusting member 440 can also be a screw structure, the fixed body is provided with a mounting groove 180, the mounting groove 180 is connected with the arc-shaped sliding hole, the first wedge 420 and the second wedge 430 are both installed in the mounting groove 180, and the extrusion member 410 is installed on the side of the second wedge 430 close to the arc-shaped shaft in the second direction. The fixed body is also provided with a second connecting hole connected with the mounting groove 180, the second connecting hole extends along the first direction, the second adjusting member 440 is threadedly connected with the inner wall of the second connecting hole, and one end of the second adjusting member 440 passes through the second connecting hole and extends into the mounting groove 180 and abuts against the first wedge 420. In this arrangement, the second adjusting member 440 can be screwed to move the second adjusting member 440 in the first direction to adjust the pressing force of the extrusion member 410 on the arc-shaped shaft, thereby adjusting the friction between the extrusion member 410 and the arc-shaped shaft, that is, adjusting the preload force of the preload assembly 400 on the arc-shaped shaft.

[0075] Optionally, a first slot body is provided on the first half shell 111, and a second slot body is provided on the second half shell 112. When the first half shell 111 and the second half shell 112 are buckled with each other, the first slot body and the second slot body form a mounting slot 180. The second connecting hole is specifically provided through the first half shell 111, and the second connecting hole is connected to the first slot body. Optionally, a dial is provided on the side of the first half shell 111 away from the second half shell 112, and the dial is arranged around the outer periphery of the second connecting hole. The dial includes a plurality of scale values ​​arranged at intervals along the circumference of the second connecting hole, and different scale values ​​represent different sizes of friction between the extrusion member 410 and the arc shaft. This arrangement allows the user to adjust the friction between the extrusion member 410 and the arc shaft according to the dial to ensure that the friction is sufficient to fix the external device 20 at the current position without external force.

[0076] In some embodiments, Figure 3 As shown, the first half shell 111 and the second half shell 112 can be connected by means of clamping, gluing or screwing. Exemplarily, the first half shell 111 and the second half shell 112 are connected by screws, and a cover plate is further provided on the side of the first half shell 111 facing away from the second half shell 112, and the screws in the first half shell 111 are covered by the cover plate, so that the pitch angle adjustment device is more beautiful.

[0077] Another embodiment of the present application provides a bracket, such as Fig.10 As shown, the bracket body 10 and the pitch angle adjustment device provided by any of the above embodiments are included, and the fixed body in the pitch angle adjustment device is connected to the bracket body 10. Compared with the related art, since the bracket provided by the embodiment of the present application includes the pitch angle adjustment device provided by any of the above embodiments, it has at least all the above beneficial effects, which will not be repeated here.

[0078] In some embodiments, Fig.10 As shown, the bracket body 10 includes a base 11 and a pillar 12 mounted on the base 11, and the pillar 12 is connected to the fixed body. Optionally, the fixed body includes a first half shell 111, a second half shell 112 and a connecting structure 140, the first half shell 111 and the second half shell 112 are surrounded to form a limiting groove, the connecting structure 140 is inserted into the limiting groove and is respectively connected to the first half shell 111 and the second half shell 112, and the connecting structure 140 is also connected to the pillar 12.

[0079] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A pitch angle adjustment device, characterized in that: include: A fixing assembly, comprising a fixing body and a first arc-shaped structure, wherein the first arc-shaped structure is arranged on the fixing body; A movable assembly, comprising a movable body and a second arc-shaped structure, wherein the second arc-shaped structure is arranged on the movable body; the first arc-shaped structure and the second arc-shaped structure both extend along the circumference of a first axis, the second arc-shaped structure is slidably mounted on the first arc-shaped structure along the circumference of the first axis, and the movable body is used to install external equipment; An elastic component, wherein the elastic component is connected to the fixed component and the movable component respectively; A pre-tightening component is installed on one of the fixed component and the movable component, and the pre-tightening component abuts against the other one to limit the relative position of the first arc-shaped structure and the second arc-shaped structure when no external force is applied.

2. The pitch angle adjustment device according to claim 1, characterized in that: The first arc-shaped structure is an arc-shaped sliding hole, and the second arc-shaped structure is an arc-shaped shaft. The arc-shaped shaft is inserted into the arc-shaped sliding hole along the circumferential direction of the first axis.

3. The pitch angle adjustment device according to claim 2, characterized in that: The elastic component includes a first connecting member, a second connecting member and an elastic member. The elastic member is located between the first connecting member and the second connecting member and is connected to the first connecting member and the second connecting member respectively. The first connecting member is connected to the arc shaft, and the second connecting member is connected to the fixed body. The initial length of the elastic member is adjustable.

4. The pitch angle adjustment device according to claim 3, characterized in that: The elastic component further includes a first adjusting member, and the second connecting member is installed on the fixed body through the first adjusting member, and the first adjusting member is used to drive the second connecting member to approach or move away from the first connecting member.

5. The pitch angle adjustment device according to claim 4, characterized in that: The fixed body is provided with an arc-shaped guide hole extending circumferentially along the first axis, a connecting hole is provided between the arc-shaped guide hole and the arc-shaped sliding hole, the first connecting member is slidably installed in the arc-shaped guide hole and connected to the arc-shaped shaft via the connecting hole, the second connecting member is installed in the arc-shaped guide hole through the first adjusting member, and the first adjusting member is used to drive the second connecting member to slide along the arc-shaped guide hole.

6. The pitch angle adjustment device according to claim 5, characterized in that: The fixing body is penetrated by a mounting hole connected with the arc-shaped guide hole, the first adjusting member is rotatably mounted on the mounting hole around the axis of the mounting hole, and the first adjusting member is threadedly connected to the second connecting member.

7. The pitch angle adjustment device according to claim 2, characterized in that: The fixed body comprises a shell and an arc-shaped sleeve extending circumferentially along the first axis, the arc-shaped sliding hole is arranged in the shell, the arc-shaped sleeve is fixedly installed in the arc-shaped sliding hole, and the arc-shaped shaft passes through the inner hole of the arc-shaped sleeve.

8. The pitch angle adjustment device according to any one of claims 2 to 7, characterized in that: The pre-tightening assembly includes an extrusion piece, which is movably mounted on the fixed body and configured to be pressed against the arc-shaped shaft to limit the relative position of the arc-shaped shaft and the arc-shaped sliding hole.

9. The pitch angle adjustment device according to claim 8, characterized in that: The preload assembly also includes a first wedge block, a second wedge block and a second adjusting member movably mounted on the fixed body, the second adjusting member contacts with one side of the first wedge block, and the second adjusting member is used to drive the first wedge block to move along the first direction; the second wedge block is located on a side of the first wedge block close to the arc axis in the second direction, and the first direction and the second direction are set at an angle; the first wedge block contacts with the second wedge block, and a contact surface between the first wedge block and the second wedge block is set at an angle to the first direction, and the extrusion member is located between the second wedge block and the arc axis.

10. A bracket, characterized in that: It comprises a bracket body and a pitch angle adjustment device as claimed in any one of claims 1 to 9, wherein the fixing body in the pitch angle adjustment device is connected to the bracket body.

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