A bracket constant force spring automatic switching structure and its display assembly

Abstract

The present invention discloses a bracket constant-force spring automatic switching structure and a display assembly thereof, comprising a mounting assembly, a bracket body, a sliding body, a trigger lever assembly, a first elastic assembly, and a second elastic assembly. The sliding body is slidably mounted within the bracket body, extending outward from the bracket body and connected to the mounting assembly. The first elastic assembly and the second elastic assembly respectively house constant-force springs, which provide elastic support when the first elastic assembly and the second elastic assembly slide. The first elastic assembly is fixed to the sliding body and slides therewith. The trigger lever assembly passes through the sliding body, and the two ends of the trigger lever assembly extend into the mounting assembly and the bracket body, respectively. The trigger lever assembly includes a trigger position and a reset position. The reset position prevents the second elastic assembly from sliding with the sliding body, while the trigger position causes the second elastic assembly to slide with the sliding body. The bracket of the present application can automatically switch the constant-force spring according to the mounted display.

Description

Technical Field

[0001] The present invention relates to the technical field of brackets, and in particular to a bracket constant force spring automatic switching structure and a display assembly thereof. Background Art

[0002] The monitor stand is used to stably install and support the monitor, and the common monitor stands on the market have the functions of lifting and rotating adjustment, so that users can adjust the position of the monitor according to their needs. For the stand with lifting and adjusting function, a constant force spring will be set in the lifting structure to provide elastic force to balance the gravity of the monitor, so that the monitor can be raised and lowered along the stand. Since the weight of monitors of different sizes and models is also different, when it is necessary to replace and install a monitor of different weight, the gravity provided by the constant force spring is also required to change accordingly, so that the elastic force provided by the constant force spring can reach a new balance with the monitor of the new weight. The existing technology provides a structure that can switch the number of constant force springs in the stand, but the switching structure is relatively complicated, and the number of constant force springs also needs to be switched manually, which makes it inconvenient for users to use the switching structure of the stand. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a bracket constant force spring automatic switching structure and a display assembly thereof. The bracket of the present application can automatically switch the constant force spring according to the installed display.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows:

[0005] The cam assembly is actuated by a spring, and the cam assembly is adapted to move the first spring assembly and the second spring assembly into engagement with the first spring assembly, the cam assembly being adapted to move the second spring assembly into engagement with the second spring assembly.

[0006] Preferably, the sliding body extends outward from the bracket body with a first connecting part, the mounting assembly includes a second connecting part, and the trigger rod assembly includes a trigger part and an execution part, the trigger part is installed on the second connecting part, and the execution part is installed on the first connecting part, and the second connecting part is connected to the first connecting part so that the trigger part and the execution part are opposite to each other; the trigger rod assembly is divided into a trigger part and an execution part, and installed on the second connecting part and the first connecting part respectively, which can make the installation of the trigger rod assembly more convenient; when the second connecting part is connected to the first connecting part, the trigger part can be opposite to the execution part, so that when the trigger part is triggered, the execution part can be pushed into the trigger slot to enter the trigger position.

[0007] Preferably, a first mounting groove is provided on the first connecting part, and the executing part includes an executing rod body and a first return spring, and a limiting ring is provided on the executing rod body, and the executing rod body penetrates the first mounting groove so that the limiting ring is accommodated in the first mounting groove and cooperates with the wall of the first mounting groove for limiting. The first return spring is sleeved on the executing rod body, and one side of the first return spring presses against the wall of the first mounting groove, and the other side of the first return spring presses against the limiting ring; the first return spring is sleeved on the executing rod body to provide the executing rod body with elastic force to reset from the trigger position to the reset position, and the executing rod body is limited and installed in the first mounting groove through the limiting ring, and the first return spring presses the limiting ring against the reset position of the trigger rod assembly corresponding to the first mounting groove to prevent it from being pushed out of the first mounting groove by the first return spring. The installation position of the first return spring is roughly equivalent to the movable range of the executing rod body in the first mounting groove, and there is a position within the movable range of the executing rod body corresponding to the trigger position of the trigger rod assembly.

[0008] Preferably, a side wall of the first mounting groove is configured as a removable first limit plate, the limit ring is pressed against the first limit plate, the actuator rod penetrates the first limit plate, and the first limit plate is configured to be removable, which can facilitate the installation of the actuator part.

[0009] Preferably, it also includes an elastic positioning piece, and the trigger rod assembly is provided with a first positioning groove and a second positioning groove. The elastic positioning piece extends into the first positioning groove to position the trigger rod assembly when the trigger rod assembly slides downward in the reset position, and extends into the second positioning groove to position the trigger rod assembly when the trigger rod assembly slides downward in the trigger position. Regardless of whether the trigger rod assembly is in the trigger position or the reset position, the elastic positioning piece can position the position of the trigger rod assembly when the trigger rod assembly slides down with the sliding body, especially in the trigger position, it can prevent the trigger rod assembly from disengaging from the trigger groove, thereby preventing the second elastic force assembly from losing the restriction of the trigger rod assembly, causing the elastic force provided by the fixed force spring on the sliding body to suddenly reduce and cause an accident.

[0010] Preferably, the mounting assembly is provided with a trigger port, the trigger part includes a trigger rod body and a second return spring, the second connecting portion is provided with a second mounting groove, the bottom surface of the second mounting groove is provided with a through hole, one end of the trigger rod body extends to the trigger port, and the other end extends to the through hole, the trigger rod body is provided with a limit block, which is limited and installed in the second mounting groove by the limit block, the second return spring is sleeved on the trigger rod body, one side of the second return spring presses on the limit block, and the other side of the second return spring presses on the bottom surface of the second mounting groove; the second return spring is sleeved on the trigger rod body, providing the trigger rod body with elastic force to return from the trigger position to the reset position, the trigger rod body is limited and installed in the second mounting groove by the limit block, and the second return spring presses the limit block against the reset position of the trigger rod assembly in the second mounting groove to prevent it from being pushed out of the second mounting groove by the second return spring, and the installation position of the second return spring is roughly equivalent to the movable range of the trigger rod body in the second mounting groove, and there is a position within the movable range of the trigger rod body corresponding to the trigger position of the trigger rod assembly.

[0011] Preferably, the surface of the second installation groove opposite to the bottom surface is set as a detachable second limiting plate, and the limiting block is pressed against the second limiting plate. The second limiting plate is set to be detachable, which can facilitate the installation of the trigger part.

[0012] Preferably, a guide structure is provided on the inner wall of the bracket body, the outer walls of the first elastic component and the second elastic component, and the guide structure guides the sliding body in the bracket body.

[0013] Preferably, the bracket body includes a spring fixing plate, the constant force spring includes a fixed end and an elastic end, the fixed end is fixed to the spring fixing plate, and the elastic end is accommodated in the first elastic component and the second elastic component.

[0014] A display assembly using the above-mentioned bracket constant-force spring automatic switching structure includes a first display and a second display, the second display being heavier than the first display, and the first display not triggering the trigger rod assembly when the first display is mounted on the mounting assembly, so that the trigger rod assembly is in a reset position, and the second display is provided with a trigger device, and when the second display is mounted on the mounting assembly, the trigger device triggers the trigger rod assembly, so that the trigger rod assembly is in a trigger position.

[0015] Compared with the prior art, the present invention has achieved beneficial technical effects:

[0016] 1. The present application can automatically switch the fixed force spring according to the device installed on the mounting assembly. When the device installed on the mounting assembly is not inserted into the trigger port, the trigger rod assembly is in the reset position. At this time, only the fixed force spring on the first elastic component provides elastic force for the lifting and sliding of the sliding body. When the device installed on the mounting assembly is inserted into the trigger port, the trigger rod enters the trigger position. At this time, the first elastic component and the second elastic component both follow the lifting and lowering of the sliding body, so that the fixed force springs installed in the first elastic component and the second elastic component can provide greater elastic force for the sliding body.

[0017] 2. The present application also improves the mounting structure of the trigger rod assembly so that it can be more conveniently mounted on the first connecting portion and the second connecting portion of the bracket without affecting the normal switching function of the constant force spring of the trigger rod assembly.

[0018] 3. In addition to having the effect of locating the position of the trigger rod assembly in the sliding state, the elastic positioning piece of the present application can also prevent the device installed in the mounting assembly and capable of extending into the trigger port from pushing the trigger rod assembly when the trigger rod assembly is in the reset position and has slid downward. That is, the device cannot be normally installed in the mounting assembly at this time, thereby avoiding the mismatch between the gravity of the installed device and the elastic force of the corresponding constant force spring.

[0019] 4. In the present application, a trigger device is not provided on the first display which is lighter in weight. When the first display is mounted on the mounting assembly, only the pressure spring in the first elastic assembly provides elastic force so that it can balance the gravity of the first display. A trigger device is provided on the second display which is relatively heavier in weight. After the second display is mounted on the mounting assembly, the pressure springs in the first elastic assembly and the second elastic assembly can provide elastic force at the same time so that it can balance the gravity of the second display. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a front view schematic diagram of a bracket according to an embodiment of the present invention;

[0021] Figure 21 is an exploded schematic diagram of a bracket according to an embodiment of the present invention;

[0022] Figure 3 is an exploded schematic diagram of the second connecting portion of an embodiment of the present invention;

[0023] Figure 4 is an exploded schematic diagram of the first connecting portion of an embodiment of the present invention;

[0024] Figure 5 is a schematic cross-sectional view of the stent in the reset position according to an embodiment of the present invention;

[0025] Figure 6 yes Figure 5 A partial enlarged schematic diagram;

[0026] Figure 7 is a schematic cross-sectional view of a bracket in a trigger position according to an embodiment of the present invention;

[0027] Figure 8 yes Figure 7 A partial enlarged schematic diagram.

[0028] The technical features indicated by the reference numerals are as follows:

[0029] 1. Mounting assembly; 11. Mounting surface; 111. Trigger port; 12. Second connecting portion; 121. Second mounting slot; 122. Second limiting plate; 123. Elastic buckle; 2. Bracket body; 21. Top cover; 3. Sliding body; 31. First connecting portion; 311. First mounting slot; 312. First limiting plate; 4. Trigger rod assembly; 41. Trigger portion; 411. Trigger rod body; 412. Second return spring; 413. Limiting block; 42. Executing portion; 421. Executing rod body; 422. First return spring; 423. Limiting ring; 424. First positioning slot; 425. Second positioning slot; 5. First elastic assembly; 51. Through slot; 52. Elastic positioning piece; 6. Second elastic assembly; 61. Trigger slot; 7. Constant force spring; 71. Spring fixing plate. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the embodiments, but the scope of protection claimed in the present invention is not limited to the following specific embodiments.

[0031] like Figures 1 to 8As shown, a bracket constant force spring automatic switching structure includes a mounting assembly 1, a bracket body 2, a sliding body 3, a trigger rod assembly 4, a first elastic assembly 5 and a second elastic assembly 6. The mounting assembly 1 is used to install an external device, such as a display; the sliding body 3 is slidably mounted in the bracket body 2, and the sliding body 3 can slide up and down in the bracket body 2. The sliding body 3 extends outward from the bracket body 2 to have a first connecting portion 31, and the first connecting portion 31 is connected to the mounting assembly 1. The first elastic assembly 5 and the second elastic assembly 6 respectively contain constant force springs 7, as shown in FIG. Figure 5 As shown, the first elastic component 5 contains two fixed springs 7, and the second elastic component 6 contains a fixed spring 7. The fixed spring 7 provides elastic support when the first elastic component 5 and the second elastic component 6 slide, so that the elastic force can be balanced with the gravity of the external device installed by the mounting component 1. The first elastic component 5 is fixed to the sliding body 3 and slides therewith. The first elastic component 5 can be fixed to the sliding body 3 by fixing methods such as pin fixing and screw fixing. The mounting component 1 is provided with a trigger port 111, and one end of the trigger rod assembly 4 is provided at the trigger port 111. The middle of the trigger rod assembly 4 passes through the first connecting portion 31, so that the other end of the trigger rod assembly 4 extends into the bracket body 2. Since the trigger rod assembly 4 passes through the first connecting portion 31, the trigger rod assembly 4 can also slide up and down with the sliding body 3. The second elastic component 6 is provided with a trigger groove 61. The trigger rod assembly 4 is resettable and includes a trigger position and a reset position. The reset position makes the trigger When the device installed on the mounting assembly 1 is not inserted into the trigger opening 111, the trigger rod assembly 4 is in the reset position. At this time, only the fixed force spring 7 on the first elastic assembly 5 provides elastic force for the lifting and sliding of the sliding body 3. When the device installed on the mounting assembly 1 is inserted into the trigger opening 111, the trigger rod enters the trigger position. At this time, the first elastic assembly 5 and the second elastic assembly 6 both rise and fall with the sliding body 3, so that the fixed force springs 7 installed in the first elastic assembly 5 and the second elastic assembly 6 can provide greater elastic force to the sliding body 3. Therefore, the device can choose whether to trigger the trigger rod assembly 4 according to its own weight, thereby realizing the structure of automatic switching of the fixed force spring 7.

[0032] In addition, the present application also provides a display assembly based on the above-mentioned scheme, which uses the above-mentioned bracket constant force spring 7 automatic switching structure, including a first display and a second display, the weight of the second display is greater than that of the first display, and when the first display is installed on the mounting assembly 1, it does not extend into the trigger port 111 to trigger the trigger rod assembly 4, so that the trigger rod assembly 4 is in a reset position, and a trigger device is provided on the second display, and when the second display is installed on the mounting assembly 1, the trigger device extends into the trigger port 111 to trigger the trigger rod assembly 4, so that the trigger rod assembly 4 is in a trigger position.

[0033] No trigger device is provided on the first display with lighter weight. When the first display is installed on the mounting assembly 1, only the pressure spring in the first elastic assembly 5 provides elastic force, so that it can balance the gravity of the first display. A trigger device is provided on the second display with relatively heavier weight. After the second display is installed on the mounting assembly 1, the pressure springs in the first elastic assembly 5 and the second elastic assembly 6 can provide elastic force at the same time, so that it can balance the gravity of the second display, thereby achieving the effect of automatically switching the constant force spring 7 according to the different displays installed on the mounting assembly 1. The trigger device is a column provided on the second display that can be extended into the trigger port 111.

[0034] like Figure 2 、 Figure 3 as well as Figure 4 As shown, the mounting assembly 1 includes a mounting surface 11 and a second connecting portion 12, the trigger port 111 is provided on the mounting surface 11, and the second connecting portion 12 is hingedly fixed to the mounting surface 11 via a hinge shaft, the trigger lever assembly 4 includes a trigger portion 41 and an execution portion 42, the trigger portion 41 is mounted on the second connecting portion 12, and the execution portion 42 is mounted on the first connecting portion 31, and an elastic buckle 123 is provided at the bottom of the second connecting portion 12, through which the second connecting portion 12 and the first connecting portion 31 are detachably connected. After the second connecting portion 12 is connected to the first connecting portion 31, the trigger portion 41 and the execution portion 42 are opposite to each other; the trigger rod assembly 4 is divided into the trigger portion 41 and the execution portion 42, and they are respectively installed on the second connecting portion 12 and the first connecting portion 31, which can make the installation, disassembly and maintenance of the trigger rod assembly 4 more convenient; when the second connecting portion 12 is connected to the first connecting portion 31, the trigger portion 41 can be opposite to the execution portion 42, so that when the trigger portion 41 is triggered, the execution portion 42 can be pushed into the trigger slot 61 to enter the trigger position.

[0035] like Figure 2 、 Figure 4 as well as Figure 6As shown, the first connecting portion 31 is provided with a first mounting groove 311, and the executing portion 42 includes an executing rod body 421 and a first return spring 422. A limiting ring 423 is provided on the executing rod body 421. The executing rod body 421 penetrates the first mounting groove 311 so that the limiting ring 423 is accommodated in the first mounting groove 311 and cooperates with the wall of the first mounting groove 311 to limit the position. The first return spring 422 is sleeved on the executing rod body 421. One side of the first return spring 422 presses against the wall of the first mounting groove 311, and the other side of the first return spring 422 presses against the limiting ring 423. The first return spring 423 is provided with a limiting ring 423. 22 is sleeved on the actuator rod body 421, providing elastic force for the actuator rod body 421 to return from the trigger position to the reset position, and the actuator rod body 421 is limited and installed in the first installation groove 311 by the limiting ring 423, and the first reset spring 422 presses the limiting ring 423 against the reset position of the trigger rod assembly 4 in the first installation groove 311 to prevent it from being pushed out of the first installation groove 311 by the first reset spring 422. The installation position of the first reset spring 422 is roughly equivalent to the movable range of the actuator rod body 421 in the first installation groove 311. There is a position within the movable range of the actuator rod body 421 that corresponds to the trigger position of the trigger rod assembly 4.

[0036] A side wall of the first mounting groove 311 is provided as a detachable first limiting plate 312 , the limiting ring 423 is pressed against the first limiting plate 312 , and the actuator rod 421 penetrates the first limiting plate 312 . The first limiting plate 312 is provided as a detachable plate, which can facilitate the installation of the actuator part 42 .

[0037] like Figure 2 、 Figure 3 as well as Figure 6As shown, the trigger part 41 includes a trigger rod body 411 and a second return spring 412, a second mounting groove 121 is provided on the second connecting portion 12, and a through-hole is provided on the bottom surface of the second mounting groove 121. One end of the trigger rod body 411 extends to the trigger port 111, and the other end extends to the through-hole. A limiting block 413 is provided on the trigger rod body 411, and the limiting block 413 is used to limit the installation in the second mounting groove 121. The second return spring 412 is sleeved on the trigger rod body 411, and one side of the second return spring 412 presses against the limiting block 413, and the other side of the second return spring 412 presses against the bottom of the second mounting groove 121. The second return spring 412 is sleeved on the trigger rod body 411, providing elastic force for the trigger rod body 411 to return from the trigger position to the reset position, and the trigger rod body 411 is limited and installed in the second mounting groove 121 by the limit block 413, and the second return spring 412 presses the limit block 413 against the reset position of the trigger rod assembly 4 in the second mounting groove 121 to avoid being pushed out of the second mounting groove 121 by the second return spring 412. The installation position of the second return spring 412 is roughly equivalent to the movable range of the trigger rod body 411 in the second mounting groove 121. There is a position within the movable range of the trigger rod body 411 that corresponds to the trigger position of the trigger rod assembly 4.

[0038] The surface of the second installation groove 121 opposite to the bottom surface is set as a detachable second limiting plate 122, and the limiting block 413 is pressed against the second limiting plate 122. The second limiting plate 122 is set to be detachable, which can facilitate the installation of the trigger part 41.

[0039] like Figure 8 As shown, when in the trigger position, the trigger rod 411 passes through the first limiting plate 312 to push the execution rod 421 into the trigger slot 61 .

[0040] A guide structure is provided on the inner wall of the bracket body 2 and the outer wall of the first elastic component 5 and the second elastic component 6, and the guide structure is used to guide the sliding body 3 in the bracket body 2. Figure 2 and Figure 5 As shown, the guide structure includes guide ridges, guide rollers and other structures arranged on the first elastic component and the second elastic component, and a guide groove structure arranged on the inner wall of the bracket.

[0041] like Figure 2 、 Figures 5 to 8As shown, it also includes an elastic positioning piece 52, the first elastic component is provided with a through slot 51, the trigger rod assembly 4 passes through the through slot 51, the elastic positioning piece 52 is installed on the first elastic component, and the elastic positioning piece 52 can extend into the through slot 51, the trigger rod assembly 4 is provided with a first positioning slot 424 and a second positioning slot 425, the elastic positioning piece 52 extends into the first positioning slot 424 to position the trigger rod assembly 4 when the trigger rod assembly 4 slides downward in the reset position, and extends into the second positioning slot 425 to position the trigger rod assembly 4 when the trigger rod assembly 4 slides downward in the trigger position. Regardless of whether the trigger rod assembly 4 is in the trigger position or the reset position, the elastic positioning piece 52 can position the position of the trigger rod assembly 4 when the trigger rod assembly 4 slides down with the sliding body 3, especially in the trigger position, it can prevent the trigger rod assembly 4 from disengaging from the trigger slot 61, thereby preventing the second elastic force assembly 6 from losing the restriction of the trigger rod assembly 4, causing the elastic force provided by the fixed force spring 7 on the sliding body 3 to suddenly decrease and cause an accident.

[0042] The bracket body 2 includes a top cover 21 and a spring fixing plate 71, the top end of the spring fixing plate 71 is pressed and fixed by the top cover 21, the fixed force spring 7 includes a fixed end and an elastic end, the fixed end is fixed on the spring fixing plate 71, and the elastic end is accommodated in the first elastic component 5 and the second elastic component 6. The top cover 21 also provides a limit for the first elastic component 5 and the second elastic component 6. The first elastic component 5 and the second elastic component 6 will slide up to the top of the bracket body 2 under the action of the fixed force spring 7 and contact the top cover 21, and the elastic positioning piece 52 at this time will also contact the top cover 21, so that the elastic positioning piece 52 exits the through slot 51, that is, the elastic positioning piece 52 at this time cannot contact the first positioning slot 424 The trigger rod assembly 4 is positioned in cooperation with the second positioning groove 425 so that the trigger rod assembly 4 can switch between the reset position and the trigger position. When the first elastic assembly 5 slides downward, the elastic positioning piece 52 will re-extend into the through groove 51 and cooperate with the first positioning groove 424 or the second positioning groove 425 in the through groove 51 to position, so that the trigger rod assembly 4 cannot switch between the reset position and the trigger position when the first elastic assembly 5 slides downward, thereby improving the safety performance of the product. Moreover, since the trigger rod assembly 4 cannot switch between the reset position and the trigger position when the first elastic assembly 5 slides downward, that is, the second display cannot be installed on the mounting assembly 1 when only the first elastic assembly 5 slides down, thereby avoiding the mismatch between the gravity of the second display and the elastic force provided by the constant force spring 7.

[0043] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and any modifications and variations of the invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience of description only and do not constitute any limitation to the invention.

Claims

1. A bracket constant force spring automatic switching structure, characterized in that: The invention comprises a mounting assembly (1), a bracket body (2), a sliding body (3), a trigger rod assembly (4), a first elastic assembly (5), a second elastic assembly (6) and an elastic positioning piece (52), wherein the sliding body (3) is slidably mounted in the bracket body (2), the sliding body (3) extends outward from the bracket body (2) and is connected to the mounting assembly (1), the first elastic assembly (5) and the second elastic assembly (6) are respectively provided with a fixed force spring (7), the fixed force spring (7) provides elastic support when the first elastic assembly (5) and the second elastic assembly (6) slide, the first elastic assembly (5) is fixed on the sliding body (3) and slides therewith, the trigger rod assembly (4) is ) passes through the sliding body (3), and the two ends of the trigger rod assembly (4) extend into the mounting assembly (1) and the bracket body (2) respectively, and the trigger rod assembly (4) includes a trigger position and a reset position. The device installed on the mounting assembly (1) triggers the trigger rod assembly (4) to enter the trigger position, so that the trigger rod assembly (4) extends into the second elastic assembly (6) so that the second elastic assembly (6) slides following the sliding body (3). When the trigger is released, the trigger rod assembly (4) enters the reset position. The reset position makes the trigger rod assembly (4) accommodate the outside of the second elastic assembly (6), so that the second elastic assembly (6) does not slide following the sliding body (3); The trigger rod assembly (4) is provided with a first positioning groove (424) and a second positioning groove (425); when the trigger rod assembly (4) is in the reset position, the elastic positioning piece (52) slides downward and extends into the first positioning groove (424) to position the trigger rod assembly (4); when the trigger rod assembly (4) is in the trigger position, the elastic positioning piece (52) slides downward and extends into the second positioning groove (425) to position the trigger rod assembly (4).

2. The automatic switching structure of the bracket constant force spring according to claim 1 is characterized in that: The sliding body (3) has a first connecting portion (31) extending outward from the bracket body (2); the mounting assembly (1) includes a second connecting portion (12); the trigger lever assembly (4) includes a trigger portion (41) and an execution portion (42); the trigger portion (41) is mounted on the second connecting portion (12); the execution portion (42) is mounted on the first connecting portion (31); the second connecting portion (12) is connected to the first connecting portion (31) so that the trigger portion (41) and the execution portion (42) are opposite to each other.

3. The automatic switching structure of the bracket constant force spring according to claim 2, characterized in that: A first mounting groove (311) is provided on the first connecting portion (31), and the executing portion (42) includes an executing rod body (421) and a first return spring (422). A limiting ring (423) is provided on the executing rod body (421), and the executing rod body (421) penetrates the first mounting groove (311), so that the limiting ring (423) is accommodated in the first mounting groove (311) and cooperates with the wall of the first mounting groove (311) to limit the position. The first return spring (422) is sleeved on the executing rod body (421), and one side of the first return spring (422) presses against the wall of the first mounting groove (311), and the other side of the first return spring (422) presses against the limiting ring (423).

4. The automatic switching structure of the bracket constant force spring according to claim 3, characterized in that: A side wall of the first installation groove (311) is provided as a detachable first limiting plate (312), the limiting ring (423) is pressed against the first limiting plate (312), and the actuator rod (421) penetrates the first limiting plate (312).

5. The automatic switching structure of the bracket constant force spring according to claim 2, characterized in that: The mounting assembly (1) is provided with a trigger opening (111), the trigger portion (41) comprises a trigger rod body (411) and a second return spring (412), the second connecting portion (12) is provided with a second mounting groove (121), the bottom surface of the second mounting groove (121) is provided with a through hole, one end of the trigger rod body (411) extends to the trigger opening (111), and the other end extends to the through hole, the trigger rod body (411) is provided with a limit block (413), and is limitedly mounted in the second mounting groove (121) by the limit block (413), the second return spring (412) is sleeved on the trigger rod body (411), one side of the second return spring (412) presses against the limit block (413), and the other side of the second return spring (412) presses against the bottom surface of the second mounting groove (121).

6. The automatic switching structure of the bracket constant force spring according to claim 5, characterized in that: The surface of the second installation groove (121) opposite to the bottom surface is provided as a detachable second limiting plate (122), and the limiting block (413) is pressed against the second limiting plate (122).

7. The automatic switching structure of the bracket constant force spring according to claim 1, characterized in that: A guide structure is provided on the inner wall of the bracket body (2), the outer walls of the first elastic component (5) and the second elastic component (6), and the guide structure guides the sliding body (3) in the bracket body (2).

8. The automatic switching structure of the bracket constant force spring according to claim 1, characterized in that: The bracket body (2) includes a spring fixing plate (71), and the constant force spring (7) includes a fixed end and an elastic end, the fixed end is fixed on the spring fixing plate (71), and the elastic end is accommodated in the first elastic component (5) and the second elastic component (6).

9. A display assembly using the bracket constant force spring automatic switching structure according to any one of claims 1 to 8, characterized in that: The device comprises a first display and a second display, wherein the second display is heavier than the first display, and when the first display is mounted on the mounting assembly (1), the trigger lever assembly (4) is not triggered, so that the trigger lever assembly (4) is in a reset position, and a trigger device is provided on the second display, and when the second display is mounted on the mounting assembly (1), the trigger device triggers the trigger lever assembly (4), so that the trigger lever assembly (4) is in a triggered position.

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