Rotating shaft assembly for adjusting pitching angle of display

Abstract

The invention discloses a rotating shaft assembly used for adjusting the pitching angle of a displayer, the rotating shaft assembly comprises a first rotating shaft assembly and a second rotating shaft assembly detachably connected to the first rotating shaft assembly, the first rotating shaft assembly comprises a fixed connecting piece and a movable connecting piece which are hinged to each other, and a mounting space is defined by the fixed connecting piece and the movable connecting piece; the second rotating shaft assembly is installed in the installation space and comprises an elastic piece, one end of the elastic piece acts on the fixed connecting piece, and the other end of the elastic piece acts on the movable connecting piece so that needed supporting force can be provided between the fixed connecting piece and the movable connecting piece. The rotating shaft assembly used for adjusting the pitching angle of the displayer is designed to comprise the first rotating shaft assembly and the second rotating shaft assembly which are detachably connected, and the second rotating shaft assembly is installed in the installation space defined by the first rotating shaft assembly. Therefore, display screens with different weights can be supported by replacing the second rotating shaft assembly, and the appearance of the rotating shaft assembly is not affected.

Description

Technical Field

[0001] The present invention relates to the field of displays, and particularly to a rotating shaft assembly for adjusting the pitching angle of a display. Background Art

[0002] For displays of different weights, if the same bracket is used, due to different torques of the rotating shaft, the screen will automatically pitch, and the pitching angle cannot be fixed. Often, it is necessary to replace the bracket with an appropriate torque to be used, which even involves the modification of the overall appearance, and the development or preparation of new brackets has a long cycle and high costs. Summary of the Invention

[0003] The purpose of the present invention is to provide a rotating shaft assembly for adjusting the pitching angle of a display, so as to solve the problems in the prior art that for displays of different weights, the rotating shaft needs to be replaced, which may lead to the need for appearance modification, as well as the long cycle and high costs of developing or preparing new brackets.

[0004] To achieve the above purpose, the present invention provides a rotating shaft assembly for adjusting the pitching angle of a display, including a first rotating shaft assembly and a second rotating shaft assembly detachably connected to the first rotating shaft assembly. The first rotating shaft assembly includes a fixed connecting member and a movable connecting member that are hinged to each other. An installation space is formed between the fixed connecting member and the movable connecting member. The second rotating shaft assembly is installed in the installation space, and the second rotating shaft assembly includes an elastic member. One end of the elastic member acts on the fixed connecting member, and the other end of the elastic member acts on the movable connecting member to provide the required supporting force between the fixed connecting member and the movable connecting member.

[0005] Preferably, the fixed connecting member includes a first fixed arm and a second fixed arm that are relatively spaced apart. The movable connecting member includes a first movable arm and a second movable arm that are relatively spaced apart. The first movable arm is hinged to the first fixed arm, and the second movable arm is hinged to the second fixed arm. The installation space is formed between the first fixed arm, the second fixed arm, the first movable arm, and the second movable arm.

[0006] Preferably, the elastic member is a support torsion spring. A first connecting plate connecting the first fixed arm and the second fixed arm is further provided at the upper parts of the first fixed arm and the second fixed arm. A second connecting plate connecting the first movable arm and the second movable arm is further provided at the lower parts of the first movable arm and the second movable arm. One end of the support torsion spring acts on the first connecting plate, and the other end of the support torsion spring abuts against the second connecting plate to provide the required torque between the fixed connecting member and the movable connecting member.

[0007] Preferably, a limiting groove recessed into the interior of the second connecting plate is provided on the inner side of the second connecting plate facing the first fixed arm or the second fixed arm. The second rotating shaft assembly further includes a fixing frame, which includes two fixing plates arranged at intervals relatively. One ends of the upper parts of the two fixing plates are also provided with a third connecting plate connecting the two fixing plates. The third connecting plate is connected to the first connecting plate and is located below the first connecting plate. A shaft sleeve is also connected between the two fixing plates. The support torsion spring is sleeved on the shaft sleeve; one end of the support torsion spring abuts against the lower surface of the third connecting plate and the other end of the support torsion spring is clamped in the limiting groove; or, one end of the support torsion spring abuts between the third connecting plate and the first connecting plate and the other end of the support torsion spring is clamped in the limiting groove.

[0008] Preferably, the support torsion spring has a first end corresponding to the third connecting plate and a second end corresponding to the limiting groove. The second rotating shaft assembly further includes a limiting and pressing part arranged corresponding to the second end, so that when the second rotating shaft assembly is not installed on the first rotating shaft assembly, the second end of the support torsion spring abuts against the limiting and pressing part.

[0009] Preferably, a connecting hole is further formed in the third connecting plate, and a first threaded hole corresponding to the connecting hole is formed in the first connecting plate, so that the first connecting plate and the third connecting plate are connected by a connecting screw.

[0010] Preferably, first clamping arms and second clamping arms respectively extend outwards from one ends of the two fixing plates close to the third connecting plate. A first clamping groove is formed in the first clamping arm, and a second clamping groove is formed in the second clamping arm. A first matching groove corresponding to the first clamping groove is formed in the first fixed arm, and a second matching groove corresponding to the second clamping groove is formed in the second fixed arm. The first clamping groove is connected to the first matching groove in an inserting manner, and the second clamping groove is connected to the second matching groove in an inserting manner.

[0011] Preferably, mounting holes are formed in one ends of the two fixing plates far away from the third connecting plate, and a friction block is embedded in each mounting hole. The outer side surface of the friction block protrudes from the outer side surface of the corresponding fixing plate to abut against the inner side surface of the first movable arm and the inner side surface of the second movable arm respectively.

[0012] Preferably, the second rotating shaft assembly further includes a supporting elastic sheet. The supporting elastic sheet is disposed between the two fixing plates. The supporting elastic sheet includes two side segments abutting against the inner side surface of the friction block and an arc segment connecting the two side segments. The arc segment is connected to the lower part of the side segment and protrudes outward. A fourth connecting plate connecting the two fixing plates is further provided on the upper parts of the two fixing plates corresponding to the supporting elastic sheet. An adjusting screw is further provided on the supporting elastic sheet. The adjusting screw passes through the arc segment and the fourth connecting plate to connect the supporting elastic sheet and the fourth connecting plate, and the adjusting screw is used to deform the arc segment to increase or decrease the abutting pressure between the arc segment and the friction block.

[0013] Preferably, a first protective shell and a second protective shell are further sleeved outside the first rotating shaft assembly and the second rotating shaft assembly. The lower parts of the first protective shell and the second protective shell are both of an open structure. The first protective shell is fixed on the first fixed arm and the second fixed arm. The second protective shell is disposed on a mounting plate for connecting a display screen. The first protective shell is provided with a protruding docking surface, and the second protective shell is provided with a concave mating surface.

[0014] Compared with the prior art, in the present invention, the rotating shaft assembly for adjusting the pitching angle of the display is designed to include a first rotating shaft assembly and a second rotating shaft assembly which are detachably connected, and the second rotating shaft assembly is installed in the installation space surrounded by the first rotating shaft assembly. Thus, different weights of display screens can be supported by replacing the second rotating shaft assembly. Moreover, the detachable setting of the second rotating shaft assembly can reduce the difficulty and cost of repairing the rotating shaft assembly. In addition, when the second rotating shaft assembly is connected to the first rotating shaft assembly, it does not affect the appearance of the rotating shaft assembly, effectively saving costs and reducing the preparation period. The design is ingenious. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of a display in an embodiment of the present invention.

[0016] Figure 2 It is a process diagram of assembling the second rotating shaft assembly on the first rotating shaft assembly in an embodiment of the present invention.

[0017] Figure 3 It is a structural diagram of the first rotating shaft assembly in an embodiment of the present invention.

[0018] Figure 4 It is a structural diagram of the second rotating shaft assembly in an embodiment of the present invention.

[0019] Figure 5 It is an exploded view of the second rotating shaft assembly in an embodiment of the present invention.

[0020] Figure 6 It is a structural diagram of the supporting elastic sheet in an embodiment of the present invention.

[0021] Figure 7 This is a structural diagram of the second rotating shaft assembly assembled on the first rotating shaft assembly in the embodiment of the present invention.

[0022] Figure 8 This is a process diagram of the insertion and cooperation between the second clamping groove and the second mating groove in the embodiment of the present invention.

[0023] Figure 9 This is a sectional structural diagram of the display in the embodiment of the present invention.

[0024] Figure 10 is Figure 9 an enlarged view of part A in

[0025] Figure 11 This is a structural diagram of the first protective shell in the embodiment of the present invention.

[0026] Figure 12 This is another structural diagram of the second rotating shaft assembly in the embodiment of the present invention.

[0027] Figure 13 is Figure 12 a structural diagram of the second rotating shaft assembly assembled on the first rotating shaft assembly in

[0028] Explanation of the attached drawing reference numerals: 10. Support column; 20. Mounting plate; 30. Rotating shaft assembly; 1. First rotating shaft assembly; 11. Fixed connecting piece; 111. First fixed arm; 112. Second fixed arm; 1121. Second mating groove; 113. First connecting plate; 1131. First threaded hole; 114. Card slot; 12. Movable connecting piece; 121. First movable arm; 122. Second movable arm; 123. Second connecting plate; 1231. Limiting groove; 124. Connecting part; 13. Installation space; 2. Second rotating shaft assembly; 21. Fixed frame; 211. Fixed plate; 212. Third connecting plate; 2121. Connecting hole; 2122. Concave groove; 213. Docking hole; 214. Installation hole; 215. Fourth connecting plate; 2151. Second threaded hole; 216. First clamping arm; 2161. First clamping groove; 217. Second clamping arm; 2171. Second clamping groove; 22. Support torsion spring; 221. First end; 222. Second end; 23. Sleeve; 24. First screw; 25. Connecting screw; 26. Friction block; 27. Support elastic piece; 271. Side section; 272. Arc section; 2721. Second through hole; 273. Overlapping section; 2731. First through hole; 274. Limiting part; 28. Adjusting screw; 3. First protective shell; 31. Hook; 32. Docking surface; 4. Second protective shell; 41. Matching surface. Detailed implementation manners

[0029] To describe in detail the technical content, structural features, and achieved effects of the present invention, the following will be described in detail in conjunction with the embodiments and with reference to the accompanying drawings.

[0030] As Figures 1 to 13 shown, an embodiment of the present invention provides a rotating shaft assembly for adjusting the pitching angle of a display, including a first rotating shaft assembly 1 and a second rotating shaft assembly 2 detachably connected to the first rotating shaft assembly 1. The first rotating shaft assembly 1 includes a fixed connecting member 11 and a movable connecting member 12 that are hinged to each other. An installation space 13 is formed between the fixed connecting member 11 and the movable connecting member 12. The second rotating shaft assembly 2 is installed in the installation space 13 and the second rotating shaft assembly 2 includes an elastic member. One end of the elastic member acts on the fixed connecting member 11 and the other end of the elastic member acts on the movable connecting member 12 to provide the required supporting force between the fixed connecting member 11 and the movable connecting member 12. Specifically, the display includes a support column 10 and a display screen. The fixed connecting member 11 is connected to the support column 10 and the fixed connecting member 11 can be set to slide up and down along the axial direction of the support column 10. One end of the movable connecting member 12 is hinged to the fixed connecting member 11, and the other end of the movable connecting member 12 is connected with a mounting plate 20. The mounting plate 20 is used to connect the display screen. The first rotating shaft assembly 1 is used to provide the steering guide for the pitching adjustment of the display screen. The first rotating shaft assembly 1 itself can provide a relatively small frictional force. The second rotating shaft assembly 2 is used to provide a relatively large supporting force and the second rotating shaft assembly 2 is detachably installed in the installation space 13 formed by the first rotating shaft assembly 1. Through the arrangement of the first rotating shaft assembly 1 and the second rotating shaft assembly 2, when the weight of the display screen increases due to adding peripherals or other situations, the second rotating shaft assembly 2 with a greater supporting force can be directly replaced without affecting the appearance of the first rotating shaft assembly 1, and thus will not affect the appearance of the rotating shaft assembly 30. The design is ingenious.

[0031] In the embodiment of the present invention, the rotating shaft assembly for adjusting the pitching angle of the display is designed to include a first rotating shaft assembly 1 and a second rotating shaft assembly 2 that are detachably connected, and the second rotating shaft assembly 2 is installed in the installation space 13 surrounded by the first rotating shaft assembly 1. Thus, the display screen with different weights can be supported by replacing the second rotating shaft assembly 2. Moreover, the detachable setting of the second rotating shaft assembly 2 can reduce the difficulty and cost of repairing the rotating shaft assembly 30. In addition, when the second rotating shaft assembly 2 is connected to the first rotating shaft assembly 1, it will not affect the appearance of the rotating shaft assembly 30, effectively saving costs and reducing the material preparation cycle. The design is ingenious.

[0032] In the embodiment of the present invention, as Figures 2 to 3As shown, the fixed connecting member 11 includes a first fixed arm 111 and a second fixed arm 112 that are relatively spaced apart. The movable connecting member 12 includes a first movable arm 121 and a second movable arm 122 that are relatively spaced apart. The first movable arm 121 is hinged to the first fixed arm 111, and the second movable arm 122 is hinged to the second fixed arm 112. An installation space 13 is defined among the first fixed arm 111, the second fixed arm 112, the first movable arm 121, and the second movable arm 122. Specifically, the first movable arm 121 can be located inside the first fixed arm 111, and the second movable arm 122 can be located inside the second fixed arm 112. The arrangements of the first fixed arm 111, the second fixed arm 112, the first movable arm 121, and the second movable arm 122 enable the fixed connecting member 11 and the movable connecting member 12 to be hinged and enable the second rotating shaft assembly 2 to be installed in the installation space 13 from below the installation space 13. The structure is simple and the operation is convenient. In addition, as Figure 3 and Figure 7 shown, connection portions 124 extending outward are provided at the ends of the first movable arm 121 away from the first fixed arm 111 and the ends of the second movable arm 122 away from the second fixed arm 112. The connection portion 124 on the first movable arm 121 and the connection portion 124 on the second movable arm 122 extend in opposite directions. The connection portions 124 are used to connect to the mounting plate 20. It should be noted that the specific positional relationship between the first movable arm 121 and the first fixed arm 111 is not limited, and the positional relationship between the second movable arm 122 and the second fixed arm 112 is not limited. Any structure that can achieve the hinging of the first movable arm 121 and the first fixed arm 111 and the hinging of the second movable arm 122 and the second fixed arm 112 is acceptable.

[0033] In the embodiment of the present invention, as Figures 2 to 10As shown, the elastic member is a support torsion spring 22. An upper portion of the first fixed arm 111 and an upper portion of the second fixed arm 112 are further provided with a first connecting plate 113 connecting the first fixed arm 111 and the second fixed arm 112. A lower portion of the first movable arm 121 and a lower portion of the second movable arm 122 are further provided with a second connecting plate 123 connecting the first movable arm 121 and the second movable arm 122. One end of the support torsion spring 22 acts on the first connecting plate 113, and the other end of the support torsion spring 22 abuts against the second connecting plate 123 to provide the required torsion force between the fixed connecting member 11 and the movable connecting member 12. Specifically, by setting the elastic member as the support torsion spring 22, the torsion force of the support torsion spring 22 is utilized to provide the supporting force between the fixed connecting member 11 and the movable connecting member 12, and the design is ingenious. Of course, in some other specific embodiments of the present invention, the elastic member can also be other components such as a tension spring or a compression spring. For example, when the elastic member is a compression spring, a first extension plate and a second extension plate extending downward can be respectively provided on the first movable arm 121 and the second movable arm 122. The compression springs are correspondingly two and are respectively a first compression spring and a second compression spring. One end of the first compression spring is connected to the first extension plate and the other end of the first compression spring is connected to the first fixed arm 111. One end of the second compression spring is connected to the second extension plate and the other end of the second compression spring is connected to the second fixed arm 112 to provide an upward supporting force to the movable connecting member 12.

[0034] Further, an inner side of the second connecting plate 123 facing the first fixed arm 111 or the second fixed arm 112 is provided with a limiting groove 1231 recessed into the interior of the second connecting plate 123. The second rotating shaft assembly 2 further includes a fixed frame 21. The fixed frame 21 includes two fixing plates 211 arranged at intervals relatively. An upper end of one end of the two fixing plates 211 is further provided with a third connecting plate 212 connecting the two fixing plates 211. The third connecting plate 212 is connected to the first connecting plate 113 and the third connecting plate 212 is located below the first connecting plate 113. A shaft sleeve 23 is further connected between the two fixing plates 211. The support torsion spring 22 is sleeved on the shaft sleeve 23. One end of the support torsion spring 22 abuts against the lower surface of the third connecting plate 212 and the other end of the support torsion spring 22 is clamped in the limiting groove 1231. Specifically, as Figures 3 to 10As shown, the second connecting plate 123 has an inner side facing the first fixing arm 111 or the second fixing arm 112 and an outer side away from the first fixing arm 111 or the second fixing arm 112. The sleeve 23 is axially provided with a through hole. Corresponding to the through hole, the two fixing plates 211 are provided with docking holes 213. Internal threads can be provided in the docking holes 213. The second rotating shaft assembly 2 further includes a first screw 24. The first screw 24 passes through the docking holes 213 and the through hole to connect the sleeve 23 between the two fixing plates 211. There can be two support torsion springs 22. The two support torsion springs 22 are sleeved on the sleeve 23 side by side. The support torsion spring 22 has a first end 221 correspondingly arranged with the third connecting plate 212 and a second end 222 correspondingly arranged with the limiting groove 1231. Corresponding to the two support torsion springs 22, the lower surface of the third connecting plate 212 is further provided with two recessed grooves 2122. The first end 221 of the support torsion spring 22 abuts and is limited in the recessed grooves 2122 and the third connecting plate 212 is connected to the first connecting plate 113, so that the first end 221 of the support torsion spring 22 acts on the first connecting plate 113, and further enables the second rotating shaft assembly 2 to provide the required torque after installation. In addition, the setting of the limiting groove 1231 facilitates the installation and limitation of the second end 222 of the support torsion spring 22.

[0035] In some other specific embodiments of the embodiments of the present invention, as Figures 12 to 13 shown, one end of the support torsion spring 22 abuts between the third connecting plate 212 and the first connecting plate 113 and the other end of the support torsion spring 22 is clamped in the limiting groove 1231. That is, the difference between this specific embodiment and the above embodiment is only that: when the second rotating shaft assembly 2 is not connected to the first rotating shaft assembly 1, the first end 221 of the support torsion spring 22 overlaps above the third connecting plate 212. The first end 221 of the support torsion spring 22 is provided with a pre-pressure angle, that is, an interference amount. After the second rotating shaft assembly 2 is installed on the first rotating shaft assembly 1, the first end 221 of the support torsion spring 22 abuts and is limited between the third connecting plate 212 and the first connecting plate 113, and the second end 222 of the support torsion spring 22 is clamped in the limiting groove 1231, so that the second rotating shaft assembly 2 can provide the required supporting force after installation.

[0036] In the embodiment of the present invention, the second rotating shaft assembly 2 further includes a limiting and pressing portion, which is arranged corresponding to the second end 222 so that when the second rotating shaft assembly 2 is not installed on the first rotating shaft assembly 1, the second end 222 of the supporting torsion spring 22 abuts against the limiting and pressing portion. Specifically, through the arrangement of the limiting and pressing portion, the second end 222 of the supporting torsion spring 22 can be limited, and the first end 221 of the supporting torsion spring 22 abuts against the lower part of the third connecting plate 212, so that when the second rotating shaft assembly 2 is not installed on the first rotating shaft assembly 1 or during the installation process of the second rotating shaft assembly 2 on the first rotating shaft assembly 1, the supporting torsion spring 22 will not shake in position, which is convenient for installation and the installation is more accurate. In addition, when the second rotating shaft assembly 2 is installed on the first rotating shaft assembly 1, the limiting and pressing portion is located above the second connecting plate 123. After the second end 222 of the supporting torsion spring 22 abuts against the second connecting plate 123, the second end 222 of the supporting torsion spring 22 moves towards the supporting column 10 and does not abut against the limiting and pressing portion.

[0037] In the embodiment of the present invention, as Figures 3 to 5 shown, a connecting hole 2121 is further formed on the third connecting plate 212, and a first threaded hole 1131 corresponding to the connecting hole 2121 is formed on the first connecting plate 113 so that the first connecting plate 113 and the third connecting plate 212 are connected by a connecting screw 25. Therefore, the second rotating shaft assembly 2 can be installed on the first rotating shaft assembly 1 only by one connecting screw 25, and the installation is convenient and fast. Of course, the connection position and connection method of the first rotating shaft assembly 1 and the second rotating shaft assembly 2 are not limited, and any method that realizes the detachable connection of the first rotating shaft assembly 1 and the second rotating shaft assembly 2 is acceptable.

[0038] Furthermore, as Figures 3 to 8 shown, one ends of the two fixing plates 211 close to the third connecting plate 212 respectively extend outwards with a first clamping arm 216 and a second clamping arm 217. A first clamping groove 2161 is formed on the first clamping arm 216, and a second clamping groove 2171 is formed on the second clamping arm 217. A first matching groove is formed on the first fixing arm 111 corresponding to the first clamping groove 2161, and a second matching groove 1121 is formed on the second fixing arm 112 corresponding to the second clamping groove 2171. The first clamping groove 2161 is inserted and connected with the first matching groove, and the second clamping groove 2171 is inserted and connected with the second matching groove 1121. Specifically, the extending directions of the first clamping arm 216 and the second clamping arm 217 are opposite, the openings of the first clamping groove 2161 and the second clamping groove 2171 both face upwards, the openings of the first matching groove and the second matching groove 1121 both face downwards, the first clamping groove 2161 and the first matching groove form a cross-shaped clamping structure, and the second clamping groove 2171 and the second matching groove 1121 also form a cross-shaped clamping structure, so as to play a guiding and positioning role during the installation process of the second rotating shaft assembly 2, and the installation is more convenient.

[0039] In an embodiment of the present invention, as Figures 4 to 7 and Figures 9 to 10 shown, mounting holes 214 are formed at one ends of the two fixing plates 211 away from the third connecting plate 212. A friction block 26 is embedded in each mounting hole 214. The outer side surface of the friction block 26 protrudes from the outer side surface of the corresponding fixing plate 211 to abut against the inner side surface of the first movable arm 121 and the inner side surface of the second movable arm 122 respectively. Specifically, the friction between the movable connecting member 12 and the second rotating shaft assembly 2 can be increased by providing the friction block 26, so as to better support the display screen.

[0040] In an embodiment of the present invention, as Figures 4 to 10 shown, the second rotating shaft assembly 2 further includes a support elastic sheet 27. The support elastic sheet 27 is arranged between the two fixing plates 211. The support elastic sheet 27 includes two side segments 271 abutting against the inner side surface of the friction block 26 and an arc segment 272 connecting the two side segments 271. The arc segment 272 is connected to the lower part of the side segment 271 and protrudes outward. A fourth connecting plate 215 connecting the two fixing plates 211 is further provided on the upper parts of the two fixing plates 211 corresponding to the support elastic sheet 27. An adjusting screw 28 is further arranged on the support elastic sheet 27. The adjusting screw 28 passes through the arc segment 272 and the fourth connecting plate 215 to connect the support elastic sheet 27 and the fourth connecting plate 215. The adjusting screw 28 is used to deform the arc segment 272 to increase or decrease the abutting pressure between the arc segment 272 and the friction block 26. Specifically, since the arc segment 272 protrudes outward, during the rotation of the adjusting screw 28, the arc segment 272 is deformed, so that the abutting pressure between the side segment 271 and the friction block 26 becomes larger or smaller, and further the friction between the side segment 271 and the friction block 26 becomes larger or smaller. Therefore, the friction can be adjusted by adjusting the support elastic sheet 27 for torque compensation.

[0041] Furthermore, as Figures 4 to 6As shown, the supporting elastic piece 27 is formed by overlapping the two ends of a sheet-shaped elastic piece, and the overlapping part forms an overlapping section 273 of the supporting elastic piece 27. The two ends of the overlapping section 273 are respectively connected to the side sections 271. A first through hole 2731 is provided on the overlapping section 273, and a second through hole 2721 is provided on the arc-shaped section 272. A second threaded hole 2151 corresponding to the first through hole 2731 and the second through hole 2721 is provided on the fourth connecting plate 215. The adjusting screw 28 passes through the second through hole 2721, the first through hole 2731, and the second threaded hole 2151 from the bottom of the supporting elastic piece 27. Specifically, the overlapping section 273, the side sections 271, and the arc-shaped section 272 enclose an annular structure with stable structure. During the rotation of the adjusting screw 28, the second through hole 2721 is driven to move towards or away from the fourth connecting plate 215, so as to adjust the pressure between the supporting elastic piece 27 and the friction block 26, thereby adjusting the frictional force between the supporting elastic piece 27 and the friction block 26. The design is ingenious. In addition, as Figures 4 to 6 and Figure 10 shown, the arc-shaped section 272 also extends symmetrically towards the third connecting plate 212 with two limiting parts 274. The limiting parts 274 and the arc-shaped section 272 enclose a limiting and pressing part to limit the second end 222 of the supporting torsion spring 22 when the second rotating shaft assembly 2 is not installed on the first rotating shaft assembly 1 and during the process of installing the second rotating shaft assembly 2 on the first rotating shaft assembly 1. After the second rotating shaft assembly 2 is installed on the first rotating shaft assembly 1, the second end 222 of the supporting torsion spring 22 passes through between the two limiting parts 274 and does not abut against the arc-shaped section 272. At this time, the two limiting parts 274 also play a certain limiting role on the supporting torsion spring 22. Of course, in some other specific embodiments of the present invention, the supporting elastic piece 27 may not have the overlapping section 273, but directly press the end of the arc-shaped section 272 against the fourth connecting plate 215, and the function of the supporting elastic piece 27 can also be realized. It should be noted that when the second rotating shaft assembly 2 is not provided with the supporting elastic piece 27, the limiting and pressing part can also be a pressing plate corresponding to the second end 222 of the supporting torsion spring 22, and the pressing plate is connected between the two fixing plates 211.

[0042] In the embodiment of the present invention, as Figures 1 to 3 and Figures 9 to 11As shown in the figure, a first protective case 3 and a second protective case 4 are further sleeved outside the first rotating shaft assembly 1 and the second rotating shaft assembly 2. The lower parts of the first protective case 3 and the second protective case 4 are both open structures. The first protective case 3 is fixed on the first fixed arm 111 and the second fixed arm 112, and the second protective case 4 is arranged on the mounting plate 20 for connecting the display screen. The first protective case 3 is provided with a protruding docking surface 32, and the second protective case 4 is provided with a concave mating surface 41. Specifically, two hooks 31 extend downward from the inner side of the first protective case 3, and clamping grooves 114 corresponding to the hooks 31 are arranged on the first fixed arm 111 and the second fixed arm 112 to connect the first protective case 3 to the first fixed arm 111 and the second fixed arm 112. During the process of installing and disassembling the second rotating shaft assembly 2, the first protective case 3, the second protective case 4, and the first rotating shaft assembly 1 do not need to be disassembled. Therefore, the appearance of the rotating shaft assembly 30 does not need to be changed, and the design is ingenious.

[0043] In the embodiment of the present invention, by using the same first rotating shaft assembly 1 and replacing or adding or subtracting the detachable second rotating shaft assembly 2, display screens of different weights can be supported without changing the appearance of the rotating shaft assembly 30; moreover, by providing the detachable second rotating shaft assembly 2, the difficulty and cost of repairing the rotating shaft assembly 30 can be reduced; in addition, the detachable second rotating shaft assembly 2 can not only provide torque, but also adjust the friction force by adjusting the tightness of the adjusting screw 28, making the feel of operating the pitch of the display screen better; at the same time, if a consumer adds peripherals to the display, the overall weight of the display increases and the torque of the support torsion spring 22 cannot be balanced, resulting in the display screen automatically lowering its head. Torque compensation can be performed by replacing the second rotating shaft assembly 2 or adjusting the friction force on the second rotating shaft assembly 2.

[0044] The above-disclosed are only the preferred examples of the present invention. Of course, the scope of the rights of the present invention cannot be limited by this. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A rotating shaft assembly for adjusting the pitch angle of a display, characterized in that: It includes a first rotating shaft assembly and a second rotating shaft assembly detachably connected to the first rotating shaft assembly. The first rotating shaft assembly includes a fixed connecting member and a movable connecting member hinged to each other. An installation space is defined between the fixed connecting member and the movable connecting member. The second rotating shaft assembly is installed in the installation space and the second rotating shaft assembly includes an elastic member. One end of the elastic member acts on the fixed connecting member and the other end of the elastic member acts on the movable connecting member to provide the required supporting force between the fixed connecting member and the movable connecting member.

2. The rotating shaft assembly for adjusting the pitch angle of a display according to claim 1, wherein: The fixed connecting member includes a first fixed arm and a second fixed arm arranged at a relatively spaced interval. The movable connecting member includes a first movable arm and a second movable arm arranged at a relatively spaced interval. The first movable arm is hinged to the first fixed arm, the second movable arm is hinged to the second fixed arm, and the installation space is defined between the first fixed arm, the second fixed arm, the first movable arm and the second movable arm.

3. The rotating shaft assembly for adjusting the pitch angle of a display according to claim 2, characterized in that: The elastic member is a supporting torsion spring. A first connecting plate connecting the first fixed arm and the second fixed arm is further provided at the upper parts of the first fixed arm and the second fixed arm. A second connecting plate connecting the first movable arm and the second movable arm is further provided at the lower parts of the first movable arm and the second movable arm. One end of the supporting torsion spring acts on the first connecting plate, and the other end of the supporting torsion spring abuts against the second connecting plate to provide the required torsion force between the fixed connecting member and the movable connecting member.

4. The rotating shaft assembly for adjusting the pitch angle of a display according to claim 3, characterized in that: A limiting groove recessed towards the inside of the second connecting plate is provided on the inner side of the second connecting plate facing the first fixed arm or the second fixed arm. The second rotating shaft assembly further includes a fixed frame. The fixed frame includes two fixing plates arranged at a relatively spaced interval. A third connecting plate connecting the two fixing plates is further provided at one end of the upper parts of the two fixing plates. The third connecting plate is connected to the first connecting plate and the third connecting plate is located below the first connecting plate. A shaft sleeve is further connected between the two fixing plates. The supporting torsion spring is sleeved on the shaft sleeve. One end of the supporting torsion spring abuts against the lower surface of the third connecting plate and the other end of the supporting torsion spring is clamped in the limiting groove; or, one end of the supporting torsion spring abuts between the third connecting plate and the first connecting plate and the other end of the supporting torsion spring is clamped in the limiting groove.

5. The rotating shaft assembly for adjusting the pitching angle of a display according to claim 4, wherein: The supporting torsion spring has a first end corresponding to the third connecting plate and a second end corresponding to the limiting groove. The second rotating shaft assembly further includes a limiting and pressing part corresponding to the second end so that when the second rotating shaft assembly is not installed on the first rotating shaft assembly, the second end of the supporting torsion spring abuts against the limiting and pressing part.

6. The rotating shaft assembly for adjusting the pitch angle of a display according to claim 4, wherein: A connecting hole is further opened on the third connecting plate, and a first threaded hole corresponding to the connecting hole is opened on the first connecting plate so that the first connecting plate and the third connecting plate are connected by a connecting screw.

7. The rotating shaft assembly for adjusting the pitching angle of a display according to claim 4, characterized in that: One end of each of the two fixing plates close to the third connecting plate further extends outwardly with a first clamping arm and a second clamping arm respectively. A first clamping groove is formed on the first clamping arm, and a second clamping groove is formed on the second clamping arm. A first matching groove is formed on the first fixing arm corresponding to the first clamping groove, and a second matching groove is formed on the second fixing arm corresponding to the second clamping groove. The first clamping groove is connected to the first matching groove in a plug-in manner, and the second clamping groove is connected to the second matching groove in a plug-in manner.

8. The rotating shaft assembly for adjusting the pitching angle of a display according to claim 4, characterized in that: One end of each of the two fixing plates away from the third connecting plate is provided with a mounting hole. A friction block is embedded in each mounting hole. The outer side surface of the friction block protrudes from the outer side surface of the corresponding fixing plate to abut against the inner side surface of the first movable arm and the inner side surface of the second movable arm respectively.

9. The rotating shaft assembly for adjusting the pitching angle of a display according to claim 8, characterized in that: The second rotating shaft assembly further includes a supporting elastic sheet. The supporting elastic sheet is arranged between the two fixing plates, and the supporting elastic sheet includes two side surface segments abutting against the inner side surface of the friction block and an arc surface segment connecting the two side surface segments. The arc surface segment is connected to the lower part of the side surface segment and protrudes outward. A fourth connecting plate connecting the two fixing plates is further provided on the upper parts of the two fixing plates corresponding to the supporting elastic sheet. An adjusting screw is further arranged on the supporting elastic sheet. The adjusting screw passes through the arc surface segment and the fourth connecting plate to connect the supporting elastic sheet and the fourth connecting plate, and the adjusting screw is used to deform the arc surface segment to increase or decrease the abutting pressure between the arc surface segment and the friction block.

10. The rotating shaft assembly for adjusting the pitching angle of a display according to claim 2, characterized in that: A first protective shell and a second protective shell are further sleeved outside the first rotating shaft assembly and the second rotating shaft assembly. The lower parts of the first protective shell and the second protective shell are both of an open structure. The first protective shell is fixed on the first fixing arm and the second fixing arm. The second protective shell is arranged on a mounting plate for connecting a display screen. The first protective shell is provided with a protruding docking surface, and the second protective shell is provided with a concave matching surface.

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