Telescopic positioning frame and electronic screen

Abstract

The embodiment of the utility model provides a telescopic positioning frame and an electronic screen. The electronic screen comprises the telescopic positioning frame and a screen body arranged on the telescopic positioning frame. The telescopic positioning frame comprises a frame body and a telescopic positioning assembly, the frame body is provided with two opposite side faces, the telescopic positioning assembly comprises a telescopic assembly and a limiting assembly which are matched with each other, the telescopic assembly is arranged on one side face, and the limiting assembly is arranged on the other side face. The telescopic assembly can be switched between a first state limited by the limiting assembly and a second state separated from the limiting assembly. When the downstream electronic screen is installed, the telescopic assembly can be operated to be switched to the first state locked with the limiting assembly on the upstream electronic screen, so that the position of the downstream electronic screen is limited, and the downstream electronic screen can be conveniently locked with the upstream electronic screen. When one electronic screen needs to be detached, the locking assembly can be operated to unlock, meanwhile, the telescopic assembly is operated to be switched to the second state where the telescopic assembly is separated from the limiting assembly, at the moment, the electronic screen can be taken down for maintenance, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic display equipment technical field especially relates to telescopic positioning frame and electronic screen. BACKGROUND

[0002] The comparatively big electronic display screen is usually connected by a plurality of small electronic screens, in order to guarantee the accuracy of small electronic screen installation, usually two adjacent small electronic screens are provided with the positioning assembly that cooperates each other and limits. The common positioning assembly is the cooperation of positioning convex block and positioning recess, so that the electronic screen that has installed can position the position of the electronic screen being installed, and the electronic screen being installed is locked with the electronic screen that has installed. Such structure is convenient for the installation of electronic screen, but when one of the electronic screens is damaged, for example, the local bulb is not bright, and needs to be repaired, even if all the locking structures are unlocked, due to the limitation between the positioning assemblies, the electronic screen needing to be repaired and the surrounding electronic screen cannot be separated, so that when one of the small screens is damaged, the whole electronic display screen needs to be removed to repair the damaged small screen, which is difficult to operate. SUMMARY

[0003] In view of the above problems, the utility model embodiment is provided, and the purpose of the utility model embodiment is to provide a telescopic positioning frame capable of facilitating the disassembly and installation of two adjacent electronic screens.

[0004] To achieve this purpose, the utility model embodiment adopts the following technical scheme:

[0005] A telescopic positioning frame comprises:

[0006] A frame body has two opposite sides;

[0007] A telescopic positioning assembly comprises a telescopic assembly and a limiting assembly, and the frame body is provided with the telescopic assembly and the limiting assembly one by one on the two opposite sides respectively, the telescopic assembly can be switched between a first state and a second state, the telescopic assembly is located in the limiting assembly when being in the first state, and the telescopic assembly is separated from the limiting assembly when being in the second state.

[0008] As an option, the frame body is provided with mounting grooves with opposite openings on the two opposite sides;

[0009] The telescopic assembly is located in one of the mounting grooves, and the limiting assembly is located in the other mounting groove;

[0010] The telescopic assembly comprises a positioning pin movably arranged in one of the mounting grooves, and the limiting assembly is provided with a pin hole matched with the positioning pin;

[0011] The positioning pin extends out of the mounting slot and is inserted into the pin hole when the telescopic assembly is in the first state.

[0012] The positioning pin is retracted into the mounting slot when the telescopic assembly is in the second state.

[0013] Optionally, the telescopic assembly further comprises:

[0014] A rotating shaft;

[0015] An operation handle is sleeved on both sides of an end of the positioning pin away from the mounting slot, the rotating shaft is arranged on the operation handle and the positioning pin, the operation handle is in abutment with the frame body, and the operation handle can rotate to a first gear position and a second gear position about the rotating shaft.

[0016] The distance between the rotating shaft and the frame body when the operation handle is rotated to the first gear position is smaller than the distance between the rotating shaft and the frame body when the operation handle is rotated to the second gear position.

[0017] Optionally, the operation handle has a first surface and a second surface which are perpendicular to each other.

[0018] The first surface has a stop block at an end thereof away from the second surface.

[0019] The second surface has a limiting edge line at an end thereof away from the first surface.

[0020] The first surface and the second surface have a transition arc therebetween.

[0021] The first surface and the stop block are in abutment with the frame body when the operation handle is in the first gear position.

[0022] The second surface is in abutment with the frame body when the operation handle is in the second gear position.

[0023] Optionally, the telescopic assembly further comprises:

[0024] A lifting platform is arranged in the mounting slot and sleeved on the positioning pin, and the lifting platform is slidable in the mounting slot.

[0025] The lifting platform is flush with a slot opening of the mounting slot when the positioning pin extends out of the mounting slot.

[0026] The lifting platform is located in the mounting slot when the positioning pin is retracted into the mounting slot.

[0027] A first magnetic member is arranged on the lifting platform.

[0028] The limiting assembly comprises a mounting plate and a second magnetic member arranged in the mounting plate.

[0029] The first magnetic attraction member and the second magnetic attraction member attract each other.

[0030] The pin hole is arranged on the mounting plate.

[0031] As an option, the lifting platform comprises:

[0032] The platform body is provided with an open cover plate slot towards the mounting slot opening side, a plurality of magnet slots are arranged in the cover plate slot, the first magnetic member is accommodated in the magnet slot, and the first magnetic member corresponds to the magnet slot one by one.

[0033] The cover plate is arranged at the opening of the cover plate slot, and the first magnetic member abuts against the cover plate.

[0034] As an option, the telescopic assembly further comprises:

[0035] The reset member is located between the slot bottom wall of the mounting slot and the platform body.

[0036] As an option, a plurality of accommodating slots are arranged in the mounting slot.

[0037] The telescopic assembly further comprises:

[0038] The limiting member is locked on the platform body through the accommodating slot and can move along with the platform body.

[0039] The reset member is sleeved on the limiting member.

[0040] One end of the reset member abuts against the slot bottom wall of the accommodating slot, and the other end abuts against the platform body.

[0041] As an option, the telescopic assembly further comprises:

[0042] The wear-resistant member is sleeved on the positioning pin and located between the operating handle and the frame body.

[0043] Another purpose of the embodiment of the utility model is to provide an electronic screen which can be conveniently installed and conveniently disassembled for maintenance.

[0044] To achieve the purpose, the embodiment of the utility model adopts the following technical scheme:

[0045] An electronic screen comprises:

[0046] A frame body and a screen body arranged on the frame body.

[0047] The frame body is the telescopic positioning frame.

[0048] The technical scheme provided by the embodiment of the utility model, through being equipped with telescopic positioning assembly on frame body, telescopic positioning assembly includes cooperation telescopic assembly and limiting assembly, frame body has opposite two side surfaces, telescopic positioning assembly includes cooperation telescopic assembly and limiting assembly, one side surface is equipped with telescopic assembly, and the other side surface is equipped with limiting assembly, and telescopic assembly can switch between the first state of being limited to limiting assembly and the second state of being separated from limiting assembly. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be simply introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0050] Figures 1-2 The structural schematic diagram of the telescopic positioning frame provided by an embodiment of the utility model is shown in the figure.

[0051] Figure 3 The sectional structural schematic diagram of the telescopic positioning frame provided by an embodiment of the utility model is shown in the figure.

[0052] Figure 4 The sectional structural schematic diagram of the telescopic positioning frame provided by an embodiment of the utility model is shown in the figure. Figure 3 The enlarged view of A in the figure.

[0053] Figure 5 The enlarged view of B in the figure. Figure 3 The enlarged view of B in the figure.

[0054] Figure 6 The structural schematic diagram of the operation handle provided by an embodiment of the utility model is shown in the figure.

[0055] In the figure:

[0056] 1, frame body;11, mounting groove;12, containing groove;

[0057] 2, telescopic positioning assembly; 21, telescopic assembly; 211, positioning pin; 212, rotating shaft; 213, operating handle; 2131, first surface; 2132, second surface; 2133, transition arc; 2134, stop block; 2135, third surface; 2136, limiting edge line; 214, lifting platform; 2141, platform body; 2142, cover plate; 2143, first magnetic member; 215, reset member; 216, limiting member; 217, anti-wear member;

[0058] 22, limiting assembly; 221, mounting plate; 2211, plate body; 222, pin hole; 223, second magnetic member. DETAILED DESCRIPTION

[0059] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0060] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0061] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0062] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0063] The electronic screen provided by the embodiments of the present application is connected in sequence to form a large electronic screen, which can be used as a stage background screen, a promotional display screen in a shopping mall, an outdoor stage performance display screen, and the like. The electronic screen comprises a frame and a screen body arranged on the frame, and locking assemblies capable of being locked with each other are arranged on two adjacent frames, so that the two adjacent electronic screens are connected together. In order to ensure that the locking assemblies between the two adjacent electronic screens are in position alignment, the two adjacent electronic screens have positioning assemblies capable of limiting each other. When the downstream electronic screen is installed, the upstream electronic screen can limit the installation position of the downstream electronic screen through the positioning assemblies, so as to ensure that the locking assemblies can lock the downstream electronic screen with the upstream electronic screen.

[0064] The positioning assemblies not only facilitate the installation and positioning of the downstream electronic screen, but also enhance the connection strength between the two adjacent electronic screens after the two adjacent electronic screens are connected, so that the overall strength of the electronic screen is higher.

[0065] The electronic screen provided by the embodiments of the present application is connected in sequence to form a large electronic screen, which can be used as a stage background screen, a promotional display screen in a shopping mall, an outdoor stage performance display screen, and the like. The electronic screen comprises a frame and a screen body arranged on the frame, and locking assemblies capable of being locked with each other are arranged on two adjacent frames, so that the two adjacent electronic screens are connected together. In order to ensure that the locking assemblies between the two adjacent electronic screens are in position alignment, the two adjacent electronic screens have positioning assemblies capable of limiting each other. When the downstream electronic screen is installed, the upstream electronic screen can limit the installation position of the downstream electronic screen through the positioning assemblies, so as to ensure that the locking assemblies can lock the downstream electronic screen with the upstream electronic screen.

[0066] The positioning assemblies not only facilitate the installation and positioning of the downstream electronic screen, but also enhance the connection strength between the two adjacent electronic screens after the two adjacent electronic screens are connected, so that the overall strength of the electronic screen is higher.

[0067] In an embodiment of the present application, the structure of the electronic screen can be that the electronic screen comprises a frame body 1 and a screen body arranged on the frame body 1, and the screen body is a telescopic positioning frame. The telescopic positioning frame has telescopic positioning assemblies. When positioning is needed, for example, when the electronic screen is being installed or after the installation, the frame of the downstream electronic screen protrudes into the frame of the upstream electronic screen. When the electronic screen is not installed or needs to be removed from the electronic screen for maintenance, the telescopic positioning assemblies 2 can be retracted into the frame. At this time, the locking assemblies between the two adjacent electronic screens are unlocked, so that one of the electronic screens constituting the electronic screen can be disassembled without disassembling the entire electronic screen, thereby facilitating the local maintenance of the electronic screen.

[0068] It should be noted that the structure facilitating installation and positioning is defined as a "positioning assembly" in the foregoing description, and the "positioning assembly" referred to in the foregoing description is renamed as a "telescopic positioning assembly" in the following description for ease of understanding.

[0069] Specifically, in some embodiments of the present application, referring to Figures 1-2 As shown in the figure, the telescopic positioning frame includes a frame body 1 and a telescopic positioning assembly 2, wherein the frame body 1 has two opposite sides, the telescopic positioning assembly 2 includes a telescopic assembly 21 and a limiting assembly 22 matched with each other, the telescopic assembly 21 and the limiting assembly 22 are respectively and correspondingly arranged on the two opposite sides of the frame body 1, the telescopic assembly 21 can be switched between a first state and a second state, the telescopic assembly 21 is located in the limiting assembly 22 when in the first state, and the telescopic assembly 21 is separated from the limiting assembly 22 when in the second state. When the downstream electronic screen needs to be installed, the state of the telescopic assembly 21 is switched to the first state and is located in the limiting assembly 22 of the upstream electronic screen frame, so as to realize the positioning of the downstream electronic screen and facilitate the installation and locking. When one of the electronic screens constituting the electronic screen appears a fault and needs to be repaired, the telescopic assembly 21 on the electronic screen needing to be repaired and the adjacent electronic screen can be switched from the first state to the second state, and then the locking assembly between the electronic screen needing to be repaired and the adjacent electronic screen is unlocked, so as to realize the unlocking of the electronic screen needing to be repaired and the adjacent electronic screen, and the electronic screen needing to be repaired can be removed from the electronic screen.

[0070] Further, in some embodiments of the present application, referring to Figures 1-4 As shown in the figure, the frame body 1 is provided with mounting grooves opening away from each other on the two opposite sides, the telescopic assembly 21 is located in one of the mounting grooves, and the limiting assembly 22 is located in the other mounting groove, that is, the telescopic assembly 21 and the limiting assembly 22 are respectively and correspondingly arranged on the two sides of the frame body 1 of the adjacent two electronic screens, so as to facilitate the cooperation of the telescopic assembly 21 and the limiting assembly 22. The telescopic assembly 21 includes a positioning pin 211 movably arranged in one of the mounting grooves, and the limiting assembly 22 is provided with a pin hole matched with the positioning pin 211, the positioning pin 211 protrudes out of the mounting groove and is inserted into the pin hole when the telescopic assembly 21 is in the first state, and the positioning pin 211 is retracted into the mounting groove when the telescopic assembly 21 is in the second state. The cooperation of the positioning pin 211 and the pin hole is simple in structure and easy to operate.

[0071] In order to facilitate the insertion of the positioning pin 211 into the pin hole and the separation of the positioning pin 211 from the pin hole, referring to Figures 1-6As shown, in some embodiments of the present application, the telescopic assembly 21 further comprises a pivot shaft 212 and an operation handle 213, the operation handle 213 is sleeved on both sides of the end of the positioning pin 211 away from the mounting slot, the pivot shaft 212 is sleeved on the operation handle 213 and the positioning pin 211, the operation handle 213 abuts against the frame 1, the operation handle 213 can rotate to a first gear position and a second gear position around the pivot shaft 212. When the operation handle 213 rotates, the pivot shaft 212 moves with the abutting point of the frame as the fulcrum, so that the pivot shaft 212 drives the positioning pin 211 to move along the mounting slot. The distance between the pivot shaft 212 and the frame 1 when the operation handle 213 rotates to the first gear position is less than the distance between the pivot shaft 212 and the frame 1 when the operation handle 213 rotates to the second gear position. When the distance between the pivot shaft 212 and the frame 1 is small, the end of the positioning pin 211 connected with the pivot shaft 212 is close to the frame 1, so that the positioning pin 211 extends out of the frame 1. When the distance between the pivot shaft 212 and the frame 1 is large, the end of the positioning pin 211 connected with the pivot shaft 212 is far away from the frame 1, so that the positioning pin 211 is retracted into the frame 1. In other words, when the positioning pin 211 rotates from the first gear position to the second gear position, the pivot shaft 212 pulls the positioning pin 211 towards the side away from the mounting slot, so as to switch the positioning pin 211 from the state of extending out of the frame 1 to the state of retracting into the frame 1. Thus, when the positioning pin 211 is in the first gear position, the telescopic assembly 21 is in a first state, and when the positioning pin 211 is in the second gear position, the telescopic assembly 21 is in a second state.

[0072] Specifically, in some embodiments of the present application, please refer to Figure 6 As shown, the operation handle 213 has a first surface 2131 and a second surface 2132 perpendicular to each other, the distance between the pivot shaft 212 and the first surface 2131 is less than the distance between the pivot shaft 212 and the second surface 2132. Therefore, when the first surface 2131 abuts against the frame 1, the distance between the pivot shaft 212 and the frame 1 is less than the distance between the pivot shaft 212 and the frame 1 when the second surface 2132 abuts against the frame 1, so as to realize that when the operation handle 213 is in the first gear position, the positioning pin 211 extends out of the frame 1, and when the operation handle 213 is in the second gear position, the positioning pin 211 retracts into the frame 1. The first surface 2131 and the second surface 2132 have a transition arc 2133 therebetween, which can reduce the pressure of the operation handle 213 on the frame 1 when the operation handle 213 rotates from the first surface 2131 to the second surface 2132, thereby reducing the friction between the operation handle 213 and the frame 1, facilitating the switching of the operation handle 213 between the first gear position and the second gear position.

[0073] To prevent the operation handle 213 from rotating to the first surface 2131 abutting against the frame 1 and then continuing to rotate away from the second surface 2132, or the operation handle 213 from rotating to the second surface 2132 abutting against the frame 1 and then continuing to rotate away from the first surface 2131, in some embodiments of the present application, please refer to Figure 6 As shown in the figure, the end of the first surface 2131 away from the second surface 2132 has a stopper 2134, when the operation handle 213 is in the first gear, the first surface 2131 and the stopper 2134 both abut against the frame 1, so when the operation handle 213 is in the first gear, the operation handle 213 will not rotate along the first surface 2131 away from the second surface 2132 due to the limitation of the stopper 2134, thereby ensuring that the distance between the rotating shaft 212 and the frame 1 is minimized, and the stopper 2134 also facilitates the operator to operate the rotation of the operation handle 213. The end of the second surface 2132 away from the first surface 2131 has a limiting edge line 2136, when the operation handle 213 is in the second gear, the second surface 2132 abuts against the frame 1, which can be that the end of the second surface 2132 away from the first surface 2131 has a third surface 2135 perpendicular to the second surface 2132, and the limiting edge line 2136 is located at the intersection of the second surface 2132 and the third surface 2135. The limiting edge line 2136 can increase the pressure between the operation handle 213 and the frame 1, thereby increasing the friction between the frame 1 and the operation handle 213, thereby limiting the rotation of the operation handle 213.

[0074] To facilitate the alignment of the positioning pin 211 with the pin hole, in some embodiments of the present application, please refer to Figures 3-4 As shown in the figure, the telescopic assembly 21 further includes a lifting platform 214, which is located in the mounting groove and is sleeved on the positioning pin 211, and the lifting platform 214 is provided with a first magnetic attraction member. The lifting platform 214 can slide in the mounting groove, and when the positioning pin 211 protrudes out of the mounting groove, the lifting platform 214 is flush with the slot of the mounting groove. The limiting assembly 22 includes a mounting plate 221 flush with the slot of the mounting groove and a second magnetic attraction member arranged in the mounting plate 221, and the pin hole is arranged on the mounting plate 221. When the downstream electronic screen is placed on the approximate installation position, the magnetic attraction force between the first magnetic attraction member and the second magnetic attraction member will drive the downstream electronic screen to move to the precise installation position, at which time the telescopic assembly 21 is switched from the second state to the first state, thereby realizing the positioning of the downstream electronic screen and facilitating subsequent locking.

[0075] Specifically, in some embodiments of the present application, please refer to Figure 4As shown, the lifting platform 214 includes a platform body 2141 and a cover plate 2142, the platform body 2141 is provided with an open cover plate groove towards the opening side of the mounting groove, a plurality of magnet grooves are arranged in the cover plate groove at intervals, the first magnetic member 2143 is accommodated in the magnet groove, the first magnetic member 2143 corresponds to the magnet groove one by one, the cover plate 2142 is covered at the opening of the cover plate groove, and the first magnetic member 2143 abuts against the cover plate 2142. The magnet groove and the first cover plate 2142 can limit the position of the first magnetic member 2143, so that the first magnetic member 2143 is positioned in the lifting platform 214 and cannot be separated from the lifting platform 214 due to the movement of the electronic screen. Similarly, the mounting plate 221 includes a plate body 2211 and a cover plate 2142, the plate body 2211 is also provided with an open cover plate groove towards the opening side of the mounting groove, a plurality of magnet grooves are arranged in the cover plate groove at intervals, the second magnetic member 223 is accommodated in the magnet groove, the second magnetic member 223 corresponds to the magnet groove on the plate body 2211 one by one, the cover plate 2142 is covered at the opening of the cover plate groove, and the second magnetic member 223 abuts against the cover plate 2142. The magnet groove on the plate body 2211 and the cover plate 2142 can limit the position of the second magnetic member 223, so that the second magnetic member 223 cannot be displaced during the movement of the electronic screen, thereby avoiding abnormal sound and protecting the second magnetic member 223 from external influences.

[0076] In order to ensure that the operation handle 213 cannot rotate when it rotates to the first gear or the second gear, and to ensure the stability of the cooperation between the telescopic assembly 21 and the limiting assembly 22, in some embodiments of the present application, please refer to Figure 4 As shown, the telescopic assembly 21 further includes a reset member 215, which is located between the groove bottom wall of the mounting groove and the platform body 2141. When the telescopic assembly 21 is in the first state, the operation handle 213 is in the first gear, at this time the positioning pin 211 protrudes out of the mounting groove and is limited in the pin hole on the plate body 2211, the lifting platform 214 is flush with the slot opening of the mounting groove, and the reset member 215 is in a natural state. When the operation handle 213 is rotated from the first gear to the second gear, the lifting platform 214 is lowered and the reset member 215 is compressed. Therefore, when the operation handle 213 is in the first gear, if it is desired to switch the operation handle 213 to the second gear, a compression force needs to be applied to compress the reset member 215. When the operation handle 213 is in the second gear, because the distance between the transition arc 2133 and the frame 1 is greater than the distance between the second surface 2132 and the frame 1 when they abut against each other, if the operation handle 213 is switched from the second gear to the first gear, a compression force also needs to be applied to compress the reset member 215. Therefore, the handle cannot be switched to the gear without human intervention due to the compression force of the reset member 215.

[0077] Further, in some embodiments of the present application, please refer to Figure 4As shown, at least one reset member 215 is evenly spaced on both sides of the positioning pin 211, so that the lifting platform 214 slides more smoothly in the mounting slot, and the compression force is increased, further avoiding the gear switching of the operating handle 213 under non-human factors.

[0078] Please refer to Figure 4 As shown, in some embodiments of the present application, a plurality of accommodating grooves are arranged in the mounting slot, and the telescopic assembly 21 further comprises a limiting member 216, which is locked on the platform body 2141 through the accommodating grooves and can move with the platform body 2141, and the reset member 215 is sleeved on the limiting member 216 to avoid the reset member 215 only deforming longitudinally and not deforming transversely during compression. One end of the reset member 215 abuts against the groove bottom wall of the accommodating groove, and the other end abuts against the platform body 2141, so that the reset member 215 does not move in position under the action of the groove bottom wall of the accommodating groove and the limiting member 216, ensuring that the two ends of the reset member 215 can stably abut against the groove bottom wall of the accommodating groove and the platform body 2141, respectively. The reset member 215 can be a spring.

[0079] The operating handle 213 abuts against and rubs against the frame 1 during the switching from the first gear to the second gear, in order to ensure the smoothness of the gear switching of the operating handle 213, please refer to Figure 4 As shown, in some embodiments of the present application, the surface roughness of the first surface 2131, the second surface 2132 and the transition arc 2133 is relatively small, thereby reducing the friction force during rotation. In some embodiments of the present application, the telescopic assembly 21 further comprises an anti-wear member 217, which is sleeved on the positioning pin 211 and arranged on the frame 1 between the frame 1 and the operating handle 213. The operating handle 213 abuts against the anti-wear member 217, and the surface friction force of the anti-wear member 217 is also relatively small, which can not only further reduce the friction force of the operating handle 213 during gear switching, but also protect the operating handle 213 and the frame 1 from being damaged by frequent friction.

[0080] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A telescopic positioning frame, characterized in that: include: a frame having two opposing sides; The telescopic positioning assembly includes a cooperating telescopic assembly and a limiting assembly. The telescopic assembly and the limiting assembly are respectively provided on the two opposite sides of the frame. The telescopic assembly can be switched between a first state and a second state. When the telescopic assembly is in the first state, it is located in the limiting assembly. When the telescopic assembly is in the second state, it is disengaged from the limiting assembly.

2. The telescopic positioning frame according to claim 1, characterized in that: Two opposite sides of the frame are provided with mounting grooves with openings facing away from each other; The telescopic assembly is located in one of the mounting slots, and the limiting assembly is located in the other mounting slot; The telescopic assembly includes a positioning pin that is movably inserted into one of the mounting slots, and the limiting assembly is provided with a pin hole that matches the positioning pin; When the telescopic assembly is in the first state, the positioning pin extends out of the mounting slot and is inserted into the pin hole; When the telescopic assembly is in the second state, the positioning pin retracts into the installation slot.

3. The telescopic positioning frame according to claim 2, characterized in that: The telescopic assembly further comprises: shaft; An operating handle is sleeved on both sides of the positioning pin at one end away from the mounting groove, the rotating shaft is passed through the operating handle and the positioning pin, the operating handle is in contact with the frame, and the operating handle can be rotated around the rotating shaft to a first gear position and a second gear position; When the operating handle is rotated to the first gear position, the distance between the rotating shaft and the frame is smaller than the distance between the rotating shaft and the frame when the operating handle is rotated to the second gear position.

4. The telescopic positioning frame according to claim 3, characterized in that: The operating handle has a first surface and a second surface that are perpendicular to each other; A stopper is provided at the end of the first surface facing away from the second surface; The second surface has a limiting edge line at an end portion facing away from the first surface; There is a transition arc between the first surface and the second surface; When the operating handle is in the first gear position, the first surface and the stopper are in contact with the frame; When the operating handle is in the second gear position, the second surface abuts against the frame.

5. The telescopic positioning frame according to claim 3, characterized in that: The telescopic assembly further comprises: A lifting platform is located in the installation groove and is sleeved on the positioning pin, and the lifting platform can slide in the installation groove; When the positioning pin extends out of the mounting slot, the lifting platform is flush with the notch of the mounting slot; When the positioning pin is retracted into the installation slot, the lifting platform is located in the installation slot; The lifting platform is provided with a first magnetic attraction component; The limiting assembly includes a mounting plate and a second magnetic attraction member arranged in the mounting plate; The first magnetic attraction member and the second magnetic attraction member are attracted to each other; The pin hole is arranged on the mounting plate.

6. The telescopic positioning frame according to claim 5, characterized in that: The lifting platform comprises: The platform is provided with an open cover plate groove facing the opening side of the installation groove, and a plurality of magnet grooves are provided at intervals in the cover plate groove, and the first magnetic members are accommodated in the magnet grooves, and the first magnetic members correspond to the magnet grooves one by one; and A cover plate is arranged to cover the opening of the cover plate slot, and the first magnetic member is in contact with the cover plate.

7. The telescopic positioning frame according to claim 6, characterized in that: The telescopic assembly further comprises: The reset member is located between the bottom wall of the installation groove and the platform.

8. The telescopic positioning frame according to claim 7, characterized in that: A plurality of accommodating slots are provided in the installation slot; The telescopic assembly further comprises: A limiting member passes through the receiving groove and is locked on the platform, and can move with the platform; The reset member is sleeved on the limiting member; One end of the restoration member abuts against the bottom wall of the accommodating groove, and the other end abuts against the platform.

9. The telescopic positioning frame according to any one of claims 3 to 8, characterized in that: The telescopic assembly further comprises: The anti-wear part is sleeved on the positioning pin and is located between the operating handle and the frame.

10. An electronic screen, characterized in that: include: A frame and a screen disposed on the frame; The frame is the telescopic positioning frame according to any one of claims 1 to 9.

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