Ceiling type electric folding television support structure

Abstract

The invention relates to the technical field of ceiling supports, and provides a ceiling type electric folding television support structure which comprises a fixing frame and a television mounting frame, a mounting part is arranged at the bottom of the fixing frame, a first strip-shaped groove is formed in the mounting part, and a first mounting shaft is slidably arranged in the first strip-shaped groove; the first mounting shaft is rotationally arranged in the first strip-shaped groove, a connecting frame is arranged at the bottom of the mounting part, the television mounting frame is fixedly arranged on the connecting frame, a first connecting rod is rotationally arranged on the side wall of the connecting frame, and a second strip-shaped groove is formed in the fixing frame in the horizontal direction; a second mounting shaft is slidably arranged in the second strip-shaped groove in the length direction of the second strip-shaped groove, the second mounting shaft is rotationally arranged in the second strip-shaped groove, and the second mounting shaft is rotationally connected with the end, away from the connecting frame, of the first connecting rod; a driving part is arranged at the bottom of the fixing frame, the output end of the driving part is hinged to the connecting frame, and the mounting end of the driving part is hinged to the bottom end of the fixing frame.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ceiling support, in particular to a ceiling-mounted electric folding TV support structure. BACKGROUND

[0002] The content of this part only provides background information related to the present application, which may not constitute prior art.

[0003] Ceiling-mounted electric TV supports are widely used in public places such as schools, hospitals, stations, airports, office and business centers, and home environments, because they can effectively utilize the ceiling space and realize the hiding and display of the TV. With the continuous advancement of the large-scale trend of display devices, users' requirements for the load-bearing capacity, size and functionality of the support are continuously increasing.

[0004] The ceiling-mounted electric folding TV support in the prior art usually adopts a three-rocker arm or a single rocker arm structure to realize the folding function. The three-rocker arm structure is composed of multiple rocker arm links, an electric push rod and a TV mounting panel. The electric push rod serves as a power source and drives the rocker arm to rotate around the shaft through telescopic movement, thereby realizing the unfolding and folding of the TV. The single rocker arm structure completes similar actions through a single rocker arm, and the structure is relatively simplified. Both the three-rocker arm and the single rocker arm structures realize the opening and closing of the support through the electric push rod, and the TV is fixed on the mounting panel and moves with the rocker arm.

[0005] However, the above-mentioned related technology has the following defects. The traditional rocker arm structure can realize the basic folding function, but its load-bearing capacity has significant limitations. Since the rocker arm structure lacks sufficient resistance to horizontal torsion when bearing a large load, it is prone to metal deformation or tearing under the action of the push rod thrust, resulting in poor stability and safety hazards. The current three-rocker arm or single rocker arm structure mainly focuses on the household market with a load of less than 45 kg and a size of less than 75 inches, and is difficult to meet the installation requirements of large-size TVs. SUMMARY

[0006] To solve the above technical problems, the purpose of the present application is to provide a ceiling-mounted electric folding TV support structure that can improve the application range of the support.

[0007] The purpose of the present application is achieved by the following technical solutions:

[0008] The utility model provides an electric folding television set support structure of ceiling type, including fixed frame and television set mounting frame, the bottom of fixed frame is fixedly provided with mounting portion, is seted up first strip slot on the mounting portion, the first installation shaft is slidably arranged in the length direction of first strip slot, the first installation shaft is rotatably arranged in first strip slot, the bottom of mounting portion is provided with connecting frame, the television set mounting frame is fixedly arranged on the connecting frame, the sidewall of connecting frame is rotatably provided with first connecting rod, the second strip slot is seted up along the horizontal direction on the fixed frame, the second installation shaft is slidably arranged in the length direction of second strip slot, the second installation shaft is rotatably arranged in second strip slot, the second installation shaft is rotatably connected with the end of first connecting rod away from connecting frame, the bottom of fixed frame is provided with driving part, the output end of driving part is hinged with connecting frame, and the mounting end of driving part is hinged with the bottom end of fixed frame.

[0009] In some possible embodiments, the second connecting rod is provided on the fixed frame, one end of the second connecting rod is rotatably connected with the fixed frame, a third installation shaft is fixedly arranged on the mounting end of the driving part, the third installation shaft is rotatably connected with the middle part of the first connecting rod, and the end of the second connecting rod away from the fixed frame is rotatably connected with the third installation shaft.

[0010] In some possible embodiments, the mounting groove is set up in the connecting frame, the connecting part is arranged in the mounting groove, the top end of the connecting part is rotatably connected with the first installation shaft, and the other end is rotatably connected with the first connecting rod.

[0011] In some possible embodiments, the sliding block is slidably arranged in the length direction of the first strip slot in the first strip slot, the first installation shaft is rotatably arranged on the sliding block, the guide groove is seted up on the inner wall of the first strip slot along the length direction of the first strip slot, the guide block is slidably arranged in the guide groove, the limiting part is arranged on the sliding block, and the limiting part is used for limiting the position of the guide block in the guide groove.

[0012] In some possible embodiments, the limiting part is a limiting pin, the mounting block is fixedly arranged on the sliding block, the through mounting hole is seted up on the mounting block, the limiting part is slidably arranged in the mounting hole, the through groove is seted up on the mounting portion along the length direction of the guide groove, the through groove is communicated with the guide groove, the limiting part is slidably arranged in the through groove, the through hole is seted up on the guide block for the limiting part to pass through, the limiting hole is seted up on the sidewall of the guide groove away from the through groove for the limiting part to insert, and the positioning assembly is arranged on the mounting block and is used for limiting the position of the limiting part on the mounting block.

[0013] In some possible embodiments, the positioning assembly comprises a positioning key and a positioning block, the positioning key is fixedly arranged on one end of the limiting piece away from the limiting hole along the length direction of the limiting piece, a sliding groove is formed on the mounting block, the sliding groove is used for sliding of the positioning key, the sliding groove is in communication with the mounting hole, the positioning block is fixedly arranged on the mounting block, a positioning slot for clamping of the positioning key is formed on the positioning block, when the positioning block is clamped into the positioning slot, the end of the limiting piece is completely separated from the limiting hole and located in the through hole, the mounting block is provided with an elastic piece, and the elastic piece is used for driving the limiting piece to move towards the limiting hole.

[0014] In some possible embodiments, an accommodating groove is formed in the interior of the mounting block, the accommodating groove is coaxially arranged with the mounting hole, the diameter of the accommodating groove is greater than the hole diameter of the mounting hole, the elastic piece is arranged in the accommodating groove, the elastic piece is a spring, the elastic piece is sleeved on the limiting piece, one end of the elastic piece is connected with the limiting piece, and the other end is connected with the inner wall of the accommodating groove, and the end of the limiting piece away from the limiting hole is provided with a pull ring.

[0015] In some possible embodiments, the limiting piece is coaxially and fixedly sleeved with a mounting ring, the mounting ring is slidingly arranged in the accommodating groove, an abutting ring is arranged in the accommodating groove, the abutting ring is movably sleeved on the limiting piece, the side of the abutting ring away from the mounting ring is embedded with a ball, the ball is used for rolling contact with the inner wall of the accommodating groove, one end of the elastic piece is fixedly connected with the mounting ring, and the other end is fixedly connected with the abutting ring.

[0016] In some possible embodiments, a third slot is formed on the inner wall of the through groove along the length direction of the through groove, a rack is fixedly arranged in the third slot along the length direction of the third slot, a gear is sleeved on the limiting piece, the gear is meshed with the rack, the side wall of the gear is slidingly connected with the side wall of the third slot, the gear is slidingly sleeved on the limiting piece, and the gear can rotate on the limiting piece about the axis of the limiting piece.

[0017] In summary, the technical scheme of the embodiment of the application has at least the following advantages and beneficial effects:

[0018] 1. By setting the mounting part with the first slot and the first mounting shaft, the linkage structure of the connecting frame and the TV mounting frame is combined, which significantly improves the overall bearing performance of the support. Under the action of the driving part, the first mounting shaft can slide along the first slot when the connecting frame drives the TV mounting frame to move, realizing dynamic adjustment of the support point, effectively dispersing the bearing stress and avoiding local stress concentration. Compared with the traditional rocker structure, the sliding connection and the rotating combination of the force transmission path enhance the torsional stiffness and stability of the structure, so that it can adapt to larger size and heavier weight display devices, expanding the application range of the support in commercial large-size TV installation scenarios;

[0019] 2. The second slot in the horizontal direction and the second mounting shaft are arranged on the fixed frame, and are rotationally connected with the first connecting rod, realizing accurate control of the movement track during the unfolding of the support, so that the TV can move smoothly along the predetermined path during unfolding and folding, avoiding interference with the ceiling or surrounding structure. Through the constraint and guidance of the movement range, not only the stability of the support during operation is improved, but also the support can reach a larger inclination angle when fully unfolded, meeting the needs of various viewing angle adjustments and improving the user's viewing experience, especially suitable for installation environments that require large-angle display in public places;

[0020] 3. The positioning and locking mechanism composed of sliding blocks, guide grooves, guide blocks and limit pieces is arranged, realizing adjustable fixing and reliable locking of the support at a specific position, so that the support can be stably stopped at any position in the unfolding stroke, adapting to the hovering needs in different use scenarios. The cooperation design of the limit piece and the limit hole ensures that the support will not be accidentally displaced under the bearing state, improving the safety of the device in use. The above structure is simple to operate and reliable in locking, effectively enhancing the structure retention ability and anti-vibration performance of the support during long-term use, and is suitable for public areas with frequent personnel flow and complex environment;

[0021] 4. By optimizing the hinge arrangement between the driving part and the connecting frame and the fixed frame, and combining the multi-linkage transmission mechanism composed of the second connecting rod and the third mounting shaft, the effect of driving a larger load with a smaller thrust is realized, effectively amplifying the output torque of the driving part and reducing the performance requirements of the electric push rod, which helps to control the cost and energy consumption. At the same time, the coordinated work of the multi-linkage system improves the movement stability, reduces the operation noise and impact, and prolongs the service life of the support. Under the premise of not greatly increasing the structure size and weight, the bearing capacity and operation reliability are simultaneously improved, which has good comprehensive economic benefits and application promotion value. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the TV mounting structure of the embodiment of the present application;

[0023] Figure 2 It is a schematic view of the overall structure of the support structure of the embodiment of the present application.

[0024] Figure 3 It is an enlarged view of A part in Figure 2

[0025] Figure 4 It is a schematic view of the structure of the mounting part of the embodiment of the present application.

[0026] Figure 5 It is a partial sectional view of the mounting part of the embodiment of the present application.

[0027] Figure 6 It is a schematic view of the structure of the sliding block of the embodiment of the present application.

[0028] Figure 7 It is a schematic view of the structure of the limiting piece of the embodiment of the present application.

[0029] Figure 8 It is a schematic view of the structure of the gear and the rack of the embodiment of the present application.

[0030] Icon: 1, fixed frame; 11, TV mounting frame; 12, mounting part; 13, driving piece; 2, first slot; 21, first mounting shaft; 22, connecting frame; 23, first connecting rod; 24, second slot; 25, second mounting shaft; 26, second connecting rod; 27, third mounting shaft; 28, mounting slot; 29, connecting part; 3, sliding block; 4, guide slot; 41, guide block; 5, limiting piece; 51, mounting block; 52, mounting hole; 53, through slot; 54, through hole; 55, limiting hole; 6, positioning assembly; 61, positioning key; 62, positioning block; 63, sliding slot; 64, positioning slot; 7, elastic piece; 71, accommodating slot; 72, mounting ring; 73, abutting ring; 74, ball; 8, third slot; 81, rack; 82, gear. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] The following refers to Figures 1 to 8 The present application is further described in detail.

[0033] The following refers to Figure 1 and Figure 2 ​The utility model provides an electric folding television set support structure of ceiling type, including fixed frame 1 and television set mounting frame 11, the bottom fixed setting of fixed frame 1 is provided with installation part 12.

[0034] Referring to Figure 2 and Figure 3 , the first slot 2 is opened in the installation part 12, as one of the embodiments of the utility model, the first slot 2 is inclinedly arranged in the opening direction, the height of the side far from the television panel is lower, and the height of the side close to the television panel is higher.

[0035] Referring to Figure 2 and Figure 3 , the first installation shaft 21 is slidably arranged in the first slot 2 along the length direction of the first slot 2, and the first installation shaft 21 is rotatably arranged in the first slot 2.

[0036] Referring to Figure 1 、 Figure 2 and Figure 3 , the bottom of the installation part 12 is provided with the connecting frame 22, the television set mounting frame 11 is fixedly arranged on the connecting frame 22, the first connecting rod 23 is rotatably arranged on the side wall of the connecting frame 22, the second slot 24 is opened in the horizontal direction on the fixed frame 1, the second installation shaft 25 is slidably arranged in the second slot 24 along the length direction of the second slot 24, the second installation shaft 25 is rotatably arranged in the second slot 24, and the second installation shaft 25 is rotatably connected with the end of the first connecting rod 23 away from the connecting frame 22.

[0037] As one of the embodiments of the utility model, the first slot 2 is opened in two, and the two first slots 2 are symmetrically arranged on the two sides of the installation part 12; the first connecting rod 23 and the second slot 24 are both provided with two, and are symmetrically arranged left and right, so that the mechanical stability of the mechanical structure in the movement process can be improved.

[0038] Referring to Figure 2 , the bottom of the fixed frame 1 is provided with the driving part 13, the output end of the driving part 13 is hingedly connected with the connecting frame 22, and the mounting end of the driving part 13 is hingedly connected with the bottom end of the fixed frame 1.

[0039] As one of the embodiments of the utility model, the driving part 13 can be an electric push rod, in the actual use process, the electric push rod can be remotely controlled in a wired connection mode, or can be remotely controlled in a wireless connection mode, and the specific control mode can be flexibly selected according to the specific model of the electric push rod.

[0040] Referring to Figure 2 and Figure 3The second connecting rod 26 is arranged on the fixed frame 1, one end of the second connecting rod 26 is rotatably connected with the fixed frame 1, the mounting end of the driving member 13 is fixedly provided with a third mounting shaft 27, the third mounting shaft 27 is rotatably connected with the middle part of the first connecting rod 23, and the end, away from the fixed frame 1, of the second connecting rod 26 is rotatably connected with the third mounting shaft 27.

[0041] With reference to Figure 3 The connecting frame 22 is provided with an installation groove 28, the installation groove 28 is provided with a connecting part 29, the top end of the connecting part 29 is rotatably connected with the first mounting shaft 21, the other end is rotatably connected with the first connecting rod 23, and the connecting part 29 can improve the connection stability between the connecting frame 22 and the mounting part 12 and the stability of the whole structure.

[0042] As an embodiment of the present application, with reference to Figure 4 The first mounting shaft 21 is rotatably arranged on the sliding block 3.

[0043] With reference to Figure 4 And Figure 5 The inner wall of the first slot 2 is provided with a guide slot 4 along the length direction of the first slot 2, and the guide slot 4 is slidably provided with a guide block 41. As an embodiment of the present application, two guide slots 4 are arranged on the inner wall of each slot, and the two guide slots 4 are arranged on the upper and lower sides of the first slot 2.

[0044] With reference to Figure 6 The sliding block 3 is provided with a limiting part 5, and the limiting part 5 is used for limiting the position of the guide block 41 in the guide slot 4.

[0045] As an embodiment of the present application, with reference to Figure 6 And Figure 7 The limiting part 5 is a limiting pin, the sliding block 3 is fixedly provided with an installation block 51, the installation block 51 is provided with a through installation hole 52, and the limiting part 5 is slidably arranged in the installation hole 52. With reference to Figure 5 The mounting part 12 is provided with a through slot 53, the through slot 53 is arranged along the length direction of the guide slot 4, and the through slot 53 is in communication with the guide slot 4.

[0046] With reference to Figure 6 And Figure 7 As an embodiment of the present application, the limiting part 5 is slidably arranged in the through slot 53, the guide block 41 is provided with a through hole 54 for the limiting part 5 to pass through, the side wall, away from the through slot 53, of the guide slot 4 is provided with a limiting hole 55 for the limiting part 5 to insert, and the installation block 51 is provided with a positioning assembly 6, and the positioning assembly 6 is used for limiting the position of the limiting part 5 on the installation block 51.

[0047] With reference toFigure 7 In one embodiment of the present invention, the positioning component 6 includes a positioning key 61 and a positioning block 62. The positioning key 61 is fixedly disposed at the end of the limiting member 5 away from the limiting hole 55 along the length direction of the limiting member 5. A sliding groove 63 is provided on the mounting block 51 for the positioning key 61 to slide. The sliding groove 63 is connected to the mounting hole 52. The positioning block 62 is fixedly disposed on the mounting block 51. A positioning slot 64 is provided on the positioning block 62 for the positioning key 61 to be inserted into. When the positioning block 62 is inserted into the positioning slot 64, the end of the limiting member 5 is completely disengaged from the limiting hole 55 and located in the through hole 54. An elastic member 7 is provided on the mounting block 51 for driving the limiting member 5 to move toward the direction closer to the limiting hole 55.

[0048] Among them, reference Figure 7 There are two positioning key 61 and two positioning block 62 respectively. The two adjacent positioning key 61 and positioning block 62 are set at a 90° angle along the axis of the limiting member 5.

[0049] Reference Figure 7 The mounting block 51 has an internal receiving groove 71, which is coaxially arranged with the mounting hole 52. The diameter of the receiving groove 71 is larger than the diameter of the mounting hole 52. An elastic element 7 is set in the receiving groove 71 and is a spring. The elastic element 7 is sleeved on the limiting element 5. One end of the elastic element 7 is connected to the limiting element 5, and the other end is connected to the inner wall of the receiving groove 71. A pull ring is provided at the end of the limiting element 5 away from the limiting hole 55.

[0050] As one embodiment of the present invention, refer to Figure 7 A mounting ring 72 is coaxially fixedly sleeved on the limiting member 5. The mounting ring 72 is slidably disposed in the receiving groove 71. An abutment ring 73 is disposed in the receiving groove 71. The abutment ring 73 is movably sleeved on the limiting member 5. A ball 74 is embedded on the side of the abutment ring 73 away from the mounting ring 72. The ball 74 is used to roll and contact the inner wall of the receiving groove 71. One end of the elastic member 7 is fixedly connected to the mounting ring 72, and the other end is fixedly connected to the abutment ring 73.

[0051] Reference Figure 6 and Figure 8 A third strip groove 8 is provided on the inner wall of the through groove 53 along the length direction of the through groove 53. A rack 81 is fixedly provided in the third strip groove 8 along the length direction of the third strip groove 8. A gear 82 is sleeved on the limiting member 5. The gear 82 and the rack 81 mesh with each other. The side wall of the gear 82 is slidably connected to the side wall of the third strip groove 8. The gear 82 is slidably sleeved on the limiting member 5, and the gear 82 can rotate on the limiting member 5 around the axis of the limiting member 5.

[0052] Additionally, refer to Figure 5Two limiting holes 55 are arranged on the two sides of the guide groove 4, and the limiting member 5 can be inserted into the limiting hole 55 in actual use, so that the television set can be fixed and adjusted in a small range, and the shearing moment of the mounting portion 12 can be reduced, and the safety and reliability of the equipment in actual use can be improved.

[0053] The implementation principle of the ceiling type electric folding television set support structure provided by the embodiment of the application is as follows:

[0054] By arranging the mounting portion 12 with the first slot 2 and the slidable first mounting shaft 21, and combining the linkage structure of the connecting frame 22 and the television set mounting frame 11, the overall bearing performance of the support is significantly improved. When the connecting frame 22 drives the television set mounting frame 11 to move under the action of the driving member 13, the first mounting shaft 21 can slide along the first slot 2, the dynamic adjustment of the support point is realized, the bearing stress is effectively dispersed, and local stress concentration is avoided. Compared with the traditional rocker structure, the force transmission path is combined by sliding connection and rotation, the torsional stiffness and stability of the structure are enhanced, the support can be adapted to larger size and heavier weight display devices, and the application range of the support in the commercial large-size television installation scene is expanded.

[0055] By optimizing the hinge arrangement between the driving member 13, the connecting frame 22 and the fixed frame 1, and combining the multi-linkage transmission mechanism composed of the second connecting rod 26 and the third mounting shaft 27, the effect of driving a larger load with a smaller thrust is realized, the output torque of the driving member 13 is effectively amplified, the performance requirement of the electric push rod is reduced, the cost and energy consumption are controlled, the motion stability is improved by the cooperation of the multi-linkage system, the running noise and impact are reduced, the service life of the support is prolonged, the bearing capacity and operation reliability are simultaneously improved without greatly increasing the structure size and weight, and good comprehensive economic benefits and application promotion value are achieved.

[0056] The above is only a preferred embodiment of the application and is not used to limit the application. For those skilled in the art, the application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A ceiling-mounted electric folding television bracket structure, comprising a fixing frame (1) and a television mounting bracket (11), characterized in that: The bottom of the fixed frame (1) is fixedly provided with an installation part (12), the installation part (12) is provided with a first strip groove (2), a first mounting shaft (21) is slidably provided in the first strip groove (2) along the length direction of the first strip groove (2), the first mounting shaft (21) is rotatably provided in the first strip groove (2), the bottom of the installation part (12) is provided with a connecting frame (22), the TV mounting bracket (11) is fixedly provided on the connecting frame (22), a first connecting rod (23) is rotatably provided on the side wall of the connecting frame (22), the fixed frame (1) is provided with a second strip groove (24) along the horizontal direction, a second mounting shaft (25) is slidably provided in the second strip groove (24) along the length direction of the second strip groove (24), the second mounting shaft (25) is rotatably provided in the second strip groove (24), and the second mounting shaft (25) is rotatably connected to the end of the first connecting rod (23) away from the connecting frame (22); The bottom of the fixed frame (1) is provided with a driving component (13), the output end of the driving component (13) is hinged to the connecting frame (22), and the mounting end of the driving component (13) is hinged to the bottom end of the fixed frame (1).

2. The ceiling-mounted electric folding TV bracket structure according to claim 1, characterized in that: The fixed frame (1) is provided with a second connecting rod (26), one end of the second connecting rod (26) is rotatably connected to the fixed frame (1), and a third mounting shaft (27) is fixedly provided on the mounting end of the driving component (13). The third mounting shaft (27) is rotatably connected to the middle part of the first connecting rod (23), and the end of the second connecting rod (26) away from the fixed frame (1) is rotatably connected to the third mounting shaft (27).

3. The ceiling-mounted electric folding TV bracket structure according to claim 2, characterized in that: The connecting frame (22) has an installation groove (28) inside, and a connecting part (29) is provided inside the installation groove (28). The top end of the connecting part (29) is rotatably connected to the first mounting shaft (21), and the other end is rotatably connected to the first connecting rod (23).

4. The ceiling-mounted electric folding TV bracket structure according to claim 1, characterized in that: A sliding block (3) is slidably disposed in the first strip groove (2) along the length direction of the first strip groove (2). The first mounting shaft (21) is rotatably disposed on the sliding block (3). A guide groove (4) is opened on the inner wall of the first strip groove (2) along the length direction of the first strip groove (2). A guide block (41) is slidably disposed in the guide groove (4). A limiting member (5) is provided on the sliding block (3). The limiting member (5) is used to limit the position of the guide block (41) in the guide groove (4).

5. The ceiling-mounted electric folding TV bracket structure according to claim 4, characterized in that: The limiting member (5) is set as a limiting pin. The sliding block (3) is fixedly provided with an installation block (51). The installation block (51) is provided with a through installation hole (52). The limiting member (5) slides through the installation hole (52). The installation part (12) is provided with a through groove (53). The through groove (53) is opened along the length direction of the guide groove (4). The through groove (53) is connected to the guide groove (4). The limiting member (5) slides in the through groove (53). The guide block (41) is provided with a through hole (54) for the limiting member (5) to pass through. The guide groove (4) is provided with a limiting hole (55) for the limiting member (5) to be inserted on the side wall away from the through groove (53). The installation block (51) is provided with a positioning component (6). The positioning component (6) is used to limit the position of the limiting member (5) on the installation block (51).

6. The ceiling-mounted electric folding TV bracket structure according to claim 5, characterized in that: The positioning component (6) includes a positioning key (61) and a positioning block (62). The positioning key (61) is fixedly disposed along the length direction of the limiting member (5) at one end of the limiting member (5) away from the limiting hole (55). A sliding groove (63) is provided on the mounting block (51). The sliding groove (63) is used for the positioning key (61) to slide. The sliding groove (63) is connected to the mounting hole (52). The positioning block (62) is fixedly disposed on the mounting hole (55). On the mounting block (51), the positioning block (62) is provided with a positioning slot (64) for the positioning key (61) to be inserted. When the positioning block (62) is inserted into the positioning slot (64), the end of the limiting member (5) is completely disengaged from the limiting hole (55) and located in the through hole (54). The mounting block (51) is provided with an elastic member (7), which is used to drive the limiting member (5) to move toward the limiting hole (55).

7. The ceiling-mounted electric folding TV bracket structure according to claim 6, characterized in that: The mounting block (51) has an internal receiving groove (71) which is coaxially arranged with the mounting hole (52). The diameter of the receiving groove (71) is larger than the diameter of the mounting hole (52). The elastic element (7) is arranged in the receiving groove (71) and is configured as a spring. The elastic element (7) is sleeved on the limiting element (5). One end of the elastic element (7) is connected to the limiting element (5) and the other end is connected to the inner wall of the receiving groove (71). A pull ring is provided at the end of the limiting element (5) away from the limiting hole (55).

8. The ceiling-mounted electric folding TV bracket structure according to claim 7, characterized in that: An installation ring (72) is coaxially fixedly sleeved on the limiting member (5). The installation ring (72) is slidably disposed in the receiving groove (71). An abutment ring (73) is disposed in the receiving groove (71). The abutment ring (73) is movably sleeved on the limiting member (5). A ball (74) is embedded on the side of the abutment ring (73) away from the installation ring (72). The ball (74) is used to roll in contact with the inner wall of the receiving groove (71). One end of the elastic member (7) is fixedly connected to the installation ring (72), and the other end is fixedly connected to the abutment ring (73).

9. The ceiling-mounted electric folding TV stand structure according to claim 5, characterized in that: A third strip groove (8) is provided on the inner wall of the through groove (53) along the length direction of the through groove (53). A rack (81) is fixedly provided in the third strip groove (8) along the length direction of the third strip groove (8). A gear (82) is sleeved on the limiting member (5). The gear (82) meshes with the rack (81). The side wall of the gear (82) is slidably connected to the side wall of the third strip groove (8). The gear (82) is slidably sleeved on the limiting member (5), and the gear (82) can rotate on the limiting member (5) around the axis of the limiting member (5).

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