CN209804236U

CN209804236U - Portable billboard bracket

Info

Publication number: CN209804236U
Application number: CN201920624666.2U
Authority: CN
Inventors: 付润鹏
Original assignee: Hebi Automotive Engineering Professional College
Current assignee: Hebi Automotive Engineering Professional College
Priority date: 2019-05-05
Filing date: 2019-05-05
Publication date: 2019-12-17
Anticipated expiration: 2029-05-05

Abstract

the utility model relates to the field of billboard brackets, in particular to a portable billboard bracket, which comprises a base, a bracket, a display rack locking device and a bracket locking device, the base comprises a bottom plate, a recovery groove, a rotating shaft hole, a locking mounting hole, a handle, a hook plate pin, a hook plate and supporting legs, the bracket comprises a supporting square tube, a locking hole, a rotating shaft, an adjusting bolt, a sliding support rod, a mounting shaft, an unfolding hole and a folding hole, the showing stand comprises a billboard, a rotating plate rotating hole, a rotating plate mounting hole, a rotating plate showing hole, a connecting plate and a hanging cross bar, show shelf locking device include pull ring I, baffle, threaded rod and nut, locking device include pull ring II, limiting plate, slip locking lever, spring and fender ring, the utility model discloses can fold the bill-board support, conveniently carry and deposit.

Description

portable billboard bracket

Technical Field

The utility model relates to a bill-board support field especially relates to a portable bill-board support.

background

the advertisement board is a display tool for propaganda materials, has the advantages of simplicity, clarity, unique cutting and the like, and can play the roles of displaying commodities, transmitting information and promoting sales. The billboard is widely applied to places such as enterprises and public institutions, advertising companies, exhibition halls, leisure homes, hotels, supermarkets and the like, improves the characteristics of enterprise image novelty, is unique, attractive, practical and fashionable, is deeply favored by masses of people and consumers, needs the support to install and fix the billboard, adopts welding in a connecting mode of each component part of the existing billboard support, and cannot be disassembled, so that the user is inconvenient to carry.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a portable bill-board support can fold the bill-board support, conveniently carries and deposits.

The purpose of the utility model is realized through the following technical scheme:

A portable billboard bracket comprises a base, a bracket, a display stand locking device and a bracket locking device, the base include the bottom plate, the accumulator, the pivot hole, the locking mounting hole, carry the hand, hook plate round pin, hook plate and landing leg, the accumulator sets up on the bottom plate, run through the setting on the bottom plate about the pivot hole, pivot hole and accumulator intercommunication, the locking mounting hole sets up in the bottom plate left side, locking mounting hole and accumulator intercommunication, carry hand fixed connection in the rear end of bottom plate, hook plate round pin fixed connection is at the right-hand member of bottom plate, hook plate rotates to be connected on hook plate round pin, the landing leg is equipped with four, the equal fixed connection of four landing legs is at the lower surface of bottom plate, the support rotates to be connected in the pivot is downthehole, the show shelf rotates to be connected on the support, show shelf locking device and support and show shelf sliding connection, locking device sliding connection is in the locking mounting hole, locking.

the support including supporting side's pipe, the locking hole, the axis of rotation, adjusting bolt, slip branch, the installation axle, exhibition trompil and the hole of turning back, the axis of rotation is rotated and is connected in the pivot hole, the lower extreme of supporting side's pipe is rotated and is connected in the axis of rotation, supporting side's pipe is located the accumulator, the locking hole sets up the lower extreme at supporting side's pipe, adjusting bolt threaded connection is in the upper end of supporting side's pipe, slip branch sliding connection is in supporting side's pipe, adjusting bolt top tight slip branch, the installation axle rotates the upper end of connecting at slip branch, exhibition trompil and the hole of turning back all set up the upper end at slip branch, the show shelf rotates to be connected on the installation axle.

The show shelf include the bill-board, change the board and revolve the hole, change the board mounting hole, change the board show hole, the connecting plate and hang the horizontal pole, change the board and revolve the hole, change the board mounting hole and change the board show hole and all set up on changeing the board, it is equipped with two to change the board, two are changeed the equal fixed connection of board and are connected at the lower extreme of bill-board, the both ends of installation axle rotate with two commentaries on classics board mounting holes respectively and are connected, slide strut is located between two commentaries on classics boards, the connecting plate is equipped with two, two connecting plate fixed connection are in the upper end of bill-board, hang horizontal pole fixed connection on two connecting plates, show shelf locking device.

The display rack locking device comprises a pull ring I, a baffle, a threaded rod and a nut, wherein the pull ring is fixedly connected to the baffle, the baffle is fixedly connected to one end of the threaded rod, the nut is in threaded connection with the other end of the threaded rod, and the threaded rod penetrates through the opening and is connected in the opening and the two rotating plate display holes in a clearance fit mode.

Locking device include pull ring II, limiting plate, slip locking lever, spring and fender ring, II fixed connection of pull ring are on the limiting plate, limiting plate fixed connection is in the one end of slip locking lever, keep off ring fixed connection at the other end of slip locking lever, the spring housing is established on the slip locking lever, the equal clearance fit sliding connection of slip locking lever and fender ring is in locking the mounting hole, the spring is located the locking mounting hole, the one end and the fender ring contact of spring, the one end and the bottom plate contact of spring, the one end and the locking hole sliding connection of slip locking lever.

The utility model has the advantages that: the utility model provides a portable billboard bracket, through base, support, show shelf locking device and support locking device's use, can fold the billboard bracket, conveniently carry and deposit.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

Fig. 2 is a schematic view of the overall structure of the present invention;

Fig. 3 is a schematic diagram of the overall structure of the present invention;

Fig. 4 is an overall cross-sectional schematic view of the present invention;

Fig. 5 is a schematic view of the base structure of the present invention;

Fig. 6 is a schematic view of the bracket structure of the present invention;

FIG. 7 is a schematic view of the structure of the display shelf of the present invention;

FIG. 8 is a schematic structural view of a locking device of the display rack of the present invention;

Fig. 9 is a schematic structural view of the bracket locking device of the present invention.

In the figure: a base 1; a bottom plate 1-1; a recovery tank 1-2; 1-3 of a rotating shaft hole; locking the mounting holes 1-4; 1-5 of a handle; 1-6 hook plate pins; 1-7 of a hook plate; 1-8 parts of supporting legs; a bracket 2; 2-1 of a support square pipe; a locking hole 2-2; 2-3 of a rotating shaft; 2-4 of an adjusting bolt; 2-5 of a sliding support rod; installing shafts 2-6; 2-7 of an opening is unfolded; 2-8 of a retracing hole; a display shelf 3; 3-1 of a billboard; 3-2 of a rotating plate; 3-3 rotating holes of the rotating plate; 3-4 rotating plate mounting holes; rotating plate display holes 3-5; 3-6 of a connecting plate; 3-7 of a hanging cross bar; a display shelf locking device 4; a pull ring I4-1; a baffle 4-2; 4-3 parts of a threaded rod; 4-4 parts of a nut; a holder locking device 5; a pull ring II 5-1; a limiting plate 5-2; a sliding lock bar 5-3; 5-4 parts of a spring; and 5-5 of baffle rings.

Detailed Description

The present invention will be described in further detail with reference to the accompanying fig. 1-9.

The first embodiment is as follows:

as shown in figures 1-9, a portable billboard bracket comprises a base 1, a bracket 2, a display 3, a display locking device 4 and a bracket locking device 5, wherein the base 1 comprises a bottom plate 1-1, a recovery groove 1-2, a rotating shaft hole 1-3, a locking mounting hole 1-4, a handle 1-5, a hook plate pin 1-6, a hook plate 1-7 and a support leg 1-8, the recovery groove 1-2 is arranged on the bottom plate 1-1, the rotating shaft hole 1-3 is arranged on the bottom plate 1-1 in a left-right penetrating manner, the rotating shaft hole 1-3 is communicated with the recovery groove 1-2, the locking mounting hole 1-4 is arranged on the left side of the bottom plate 1-1, the locking mounting hole 1-4 is communicated with the recovery groove 1-2, the handle 1-5 is fixedly connected at the rear end of the bottom plate 1-1, hook plate pins 1-6 are fixedly connected to the right end of the bottom plate 1-1, hook plates 1-7 are rotatably connected to the hook plate pins 1-6, four supporting legs 1-8 are arranged, four supporting legs 1-8 are fixedly connected to the lower surface of the bottom plate 1-1, the support 2 is rotatably connected to the rotating shaft holes 1-3, the display frame 3 is rotatably connected to the support 2, the display frame locking device 4 is slidably connected with the support 2 and the display frame 3, the locking device 5 is slidably connected to the locking mounting holes 1-4, and the locking device 5 is slidably connected with the support 2.

when the folding display device is used, the device is supported and arranged through the supporting legs 1-8 and the bottom plate 1-1, the support 2 is fixed in a vertical state through the locking device 5, the display frame 3 is fixed in a display state through the locking device 4, finally, the length of the support 2 is adjusted to a proper height, so that advertisement information can be displayed on the front side and the back side of the billboard 3-1, when the device needs to be folded for storage or carrying, the support 2 is adjusted to be in a shortest state firstly, the display frame 3 is locked in a folding state through the display frame locking device 4, then the locking device 5 is opened to enable the support 2 to rotate into the recovery groove 1-2, finally, the hook plate 1-7 on the hook plate pin 1-6 is rotated to enable the hook plate 1-7 to hook the hanging cross rod 3-7 on the display frame 3, so that the whole device is folded and folded, the carrying handle 1-5 can be directly lifted by hands to carry the device.

The second embodiment is as follows:

As shown in fig. 1-9, the support 2 comprises a support square tube 2-1, a locking hole 2-2, a rotating shaft 2-3, an adjusting bolt 2-4, a sliding support rod 2-5, an installation shaft 2-6, an expansion hole 2-7 and a folding hole 2-8, the rotating shaft 2-3 is rotatably connected in the rotating shaft hole 1-3, the lower end of the support square tube 2-1 is rotatably connected on the rotating shaft 2-3, the support square tube 2-1 is positioned in a recovery groove 1-2, the locking hole 2-2 is arranged at the lower end of the support square tube 2-1, the adjusting bolt 2-4 is in threaded connection with the upper end of the support square tube 2-1, the sliding support rod 2-5 is in the support square tube 2-1, the adjusting bolt 2-4 tightly pushes the sliding support rod 2-5, the installation shaft 2-6 is rotatably connected to the upper end of the sliding support rod 2-5, the unfolding hole 2-7 and the folding back hole 2-8 are both arranged at the upper end of the sliding support rod 2-5, the display frame 3 is rotatably connected to the installation shaft 2-6, the display frame locking device 4 is connected in the unfolding hole 2-7 in a clearance fit mode, and the locking device 5 is in sliding connection with the locking hole 2-2.

When the support 2 is used, the support square pipe 2-1 rotates in the recovery groove 1-2 through the rotating shaft 2-3, the support square pipe 2-1 can be locked in a state perpendicular to the recovery groove 1-2 through the sliding connection of the locking device 5 and the locking hole 2-2, the adjusting bolt 2-4 is used for adjusting the height position of the sliding support rod 2-5 in the support square pipe 2-1, the sliding support rod 2-5 is tightly pressed and fixed in the support square pipe 2-1 through the threaded end of the adjusting bolt 2-4, the mounting shaft 2-6 is used for mounting the display frame 3, the unfolding hole 2-7 is used for unfolding and fixing the display frame 3, and the folding hole 2-8 is used for folding and fixing the display frame 3.

The third concrete implementation mode:

as shown in figures 1-9, the showing stand 3 comprises a billboard 3-1, a rotating plate 3-2, a rotating plate rotating hole 3-3, a rotating plate mounting hole 3-4, a rotating plate showing hole 3-5, a connecting plate 3-6 and a hanging cross bar 3-7, wherein the rotating plate rotating hole 3-3, the rotating plate mounting hole 3-4 and the rotating plate showing hole 3-5 are all arranged on the rotating plate 3-2, two rotating plates 3-2 are arranged, the two rotating plates 3-2 are fixedly connected at the lower end of the billboard 3-1, two ends of a mounting shaft 2-6 are respectively rotatably connected with the two rotating plate mounting holes 3-4, a sliding support rod 2-5 is positioned between the two rotating plates 3-2, two connecting plates 3-6 are arranged, the two connecting plates 3-6 are fixedly connected at the upper end of the billboard 3-1, the hanging cross rods 3-7 are fixedly connected to the two connecting plates 3-6, and the display frame locking device 4 is in clearance fit connection with the two rotating plate display holes 3-5.

When the showing stand 3 is used, the front side and the back side of the billboard 3-1 can be used for showing advertisement information, the hanging cross rods 3-7 can be used for hanging the advertisement information, and simultaneously, when the whole device is folded, the device is locked in a folded state through hooking with the hook plates 1-7, so that the device is prevented from being scattered when the device is moved, the rotating plate mounting holes 3-4 on the rotating plates 3-2 are used for being rotatably connected with the mounting shafts 2-6, so that the rotation of the showing stand 3 on the mounting shafts 2-6 is ensured, when the showing stand 3 is rotated to enable the showing stand 3 to be unfolded, the rotating plate showing holes 3-5 on the two rotating plates 3-2 are concentric with the unfolding holes 2-7, after the showing holes 3-5 and the unfolding holes 2-7 of the two rotating plates simultaneously penetrate through the fixed connection through the showing stand locking device 4, the billboard 3-1 is kept in a showing state, when the showing stand 3 is rotated to fold the showing stand 3, the rotating plate rotating holes 3-3 on the two rotating plates 3-2 are concentric with the folding holes 2-8, and after the two rotating plate rotating holes 3-3 and the folding holes 2-8 simultaneously penetrate through the showing stand locking device 4 to be fixedly connected, the advertising board 3-1 keeps a folding state.

The fourth concrete implementation mode:

As shown in fig. 1-9, the locking device 4 of the display rack comprises a pull ring i 4-1, a baffle plate 4-2, a threaded rod 4-3 and a nut 4-4, wherein the pull ring 4-1 is fixedly connected to the baffle plate 4-2, the baffle plate 4-2 is fixedly connected to one end of the threaded rod 4-3, the nut 4-4 is in threaded connection with the other end of the threaded rod 4-3, and the threaded rod 4-3 penetrates through the display hole 2-7 and is in clearance fit connection with the display holes 3-5 of the two rotating plates.

when the display frame locking device 4 is used, the threaded rod 4-3 can be conveniently taken through the pull ring I4-1 to be inserted, and the baffle 4-2 and the nut 4-4 can prevent the threaded rod 4-3 from sliding down from the hole when the display frame 3 is inserted and fixed.

The fifth concrete implementation mode:

as shown in fig. 1-9, the locking device 5 includes a pull ring ii 5-1, a limiting plate 5-2, a sliding lock rod 5-3, a spring 5-4 and a stop ring 5-5, the pull ring ii 5-1 is fixedly connected to the limiting plate 5-2, the limiting plate 5-2 is fixedly connected to one end of the sliding lock rod 5-3, the stop ring 5-5 is fixedly connected to the other end of the sliding lock rod 5-3, the spring 5-4 is sleeved on the sliding lock rod 5-3, the sliding lock rod 5-3 and the stop ring 5-5 are both in clearance fit and sliding connection in the locking mounting hole 1-4, the spring 5-4 is located in the locking mounting hole 1-4, one end of the spring 5-4 is in contact with the stop ring 5-5, one end of the spring 5-4 is in contact with the bottom plate 1-, one end of the sliding lock bar 5-3 is connected with the locking hole 2-2 in a sliding way.

When the locking device 5 is used, the sliding lock rod 5-3 and the baffle ring 5-5 simultaneously slide outwards by pulling the pull ring II 5-1 outwards, the baffle ring 5-5 extrudes the spring 5-4 when sliding outwards, after the inner end of the sliding lock rod 5-3 completely slides into the locking mounting hole 1-4, the supporting square pipe 2-1 is rotated to enable the locking hole 2-2 to rotate to the inner end of the sliding lock rod 5-3, the pull ring II 5-1 is released, the sliding lock rod 5-3 slides inwards by the elastic force of the spring 5-4 until sliding into the locking hole 2-2, at the moment, the supporting square pipe 2-1 is locked into a vertical state, when the supporting square pipe 2-1 needs to be retracted, the steps are repeated to enable the locking hole 2-2 to be separated from the inner end of the sliding lock rod 5-3, the square supporting tube 2-1 is rotated backwards, and the limiting plate 5-2 is used for limiting the sliding lock rod 5-3 to prevent the sliding lock rod 5-3 from sliding off from the locking mounting hole 1-4.

The utility model relates to a portable bill-board support, its theory of use is: when the folding display device is used, the device is supported and arranged through the supporting legs 1-8 and the bottom plate 1-1, the support 2 is fixed in a vertical state through the locking device 5, the display frame 3 is fixed in a display state through the locking device 4, finally, the length of the support 2 is adjusted to a proper height, so that advertisement information can be displayed on the front side and the back side of the billboard 3-1, when the device needs to be folded for storage or carrying, the support 2 is adjusted to be in a shortest state firstly, the display frame 3 is locked in a folding state through the display frame locking device 4, then the locking device 5 is opened to enable the support 2 to rotate into the recovery groove 1-2, finally, the hook plate 1-7 on the hook plate pin 1-6 is rotated to enable the hook plate 1-7 to hook the hanging cross rod 3-7 on the display frame 3, so that the whole device is folded and folded, the carrying handle 1-5 can be directly lifted by hands to carry the device. When the support 2 is used, the support square pipe 2-1 rotates in the recovery groove 1-2 through the rotating shaft 2-3, the support square pipe 2-1 can be locked in a state perpendicular to the recovery groove 1-2 through the sliding connection of the locking device 5 and the locking hole 2-2, the adjusting bolt 2-4 is used for adjusting the height position of the sliding support rod 2-5 in the support square pipe 2-1, the sliding support rod 2-5 is tightly pressed and fixed in the support square pipe 2-1 through the threaded end of the adjusting bolt 2-4, the mounting shaft 2-6 is used for mounting the display frame 3, the unfolding hole 2-7 is used for unfolding and fixing the display frame 3, and the folding hole 2-8 is used for folding and fixing the display frame 3. When the showing stand 3 is used, the front side and the back side of the billboard 3-1 can be used for showing advertisement information, the hanging cross rods 3-7 can be used for hanging the advertisement information, and simultaneously, when the whole device is folded, the device is locked in a folded state through hooking with the hook plates 1-7, so that the device is prevented from being scattered when the device is moved, the rotating plate mounting holes 3-4 on the rotating plates 3-2 are used for being rotatably connected with the mounting shafts 2-6, so that the rotation of the showing stand 3 on the mounting shafts 2-6 is ensured, when the showing stand 3 is rotated to enable the showing stand 3 to be unfolded, the rotating plate showing holes 3-5 on the two rotating plates 3-2 are concentric with the unfolding holes 2-7, after the showing holes 3-5 and the unfolding holes 2-7 of the two rotating plates simultaneously penetrate through the fixed connection through the showing stand locking device 4, the billboard 3-1 is kept in a showing state, when the showing stand 3 is rotated to fold the showing stand 3, the rotating plate rotating holes 3-3 on the two rotating plates 3-2 are concentric with the folding holes 2-8, and after the two rotating plate rotating holes 3-3 and the folding holes 2-8 simultaneously penetrate through the showing stand locking device 4 to be fixedly connected, the advertising board 3-1 keeps a folding state. When the display frame locking device 4 is used, the threaded rod 4-3 can be conveniently taken through the pull ring I4-1 to be inserted, and the baffle 4-2 and the nut 4-4 can prevent the threaded rod 4-3 from sliding down from the hole when the display frame 3 is inserted and fixed. When the locking device 5 is used, the sliding lock rod 5-3 and the baffle ring 5-5 simultaneously slide outwards by pulling the pull ring II 5-1 outwards, the baffle ring 5-5 extrudes the spring 5-4 when sliding outwards, after the inner end of the sliding lock rod 5-3 completely slides into the locking mounting hole 1-4, the supporting square pipe 2-1 is rotated to enable the locking hole 2-2 to rotate to the inner end of the sliding lock rod 5-3, the pull ring II 5-1 is released, the sliding lock rod 5-3 slides inwards by the elastic force of the spring 5-4 until sliding into the locking hole 2-2, at the moment, the supporting square pipe 2-1 is locked into a vertical state, when the supporting square pipe 2-1 needs to be retracted, the steps are repeated to enable the locking hole 2-2 to be separated from the inner end of the sliding lock rod 5-3, the square supporting tube 2-1 is rotated backwards, and the limiting plate 5-2 is used for limiting the sliding lock rod 5-3 to prevent the sliding lock rod 5-3 from sliding off from the locking mounting hole 1-4.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art can make variations within the scope of the present invention; modifying; addition or replacement also belong to the protection scope of the utility model.

Claims

1. The utility model provides a portable bill-board support, includes base (1), support (2), show shelf (3), show shelf locking device (4) and support locking device (5), its characterized in that: the base (1) comprises a bottom plate (1-1), a recovery groove (1-2), a rotating shaft hole (1-3), locking mounting holes (1-4), a handle (1-5), a hook plate pin (1-6), a hook plate (1-7) and support legs (1-8), wherein the recovery groove (1-2) is arranged on the bottom plate (1-1), the rotating shaft hole (1-3) penetrates through the bottom plate (1-1) from left to right, the rotating shaft hole (1-3) is communicated with the recovery groove (1-2), the locking mounting holes (1-4) are arranged on the left side of the bottom plate (1-1), the locking mounting holes (1-4) are communicated with the recovery groove (1-2), the handle (1-5) is fixedly connected at the rear end of the bottom plate (1-1), the hook plate pin (1-6) is fixedly connected at the right end of the bottom plate (1-1), hook plate (1-7) rotate to be connected on hook plate round pin (1-6), landing leg (1-8) are equipped with four, four landing legs (1-8) all fixed connection are in the lower surface of bottom plate (1-1), support (2) rotate to be connected in pivot hole (1-3), show shelf (3) rotate to be connected on support (2), show shelf locking device (4) and support (2) and show shelf (3) sliding connection, support locking device (5) sliding connection is in locking mounting hole (1-4), support locking device (5) and support (2) sliding connection.

2. A portable billboard holder according to claim 1, in which: the support (2) comprises a supporting square pipe (2-1), a locking hole (2-2), a rotating shaft (2-3), an adjusting bolt (2-4), a sliding support rod (2-5), an installation shaft (2-6), an expansion hole (2-7) and a folding back hole (2-8), the rotating shaft (2-3) is rotatably connected in the rotating shaft hole (1-3), the lower end of the supporting square pipe (2-1) is rotatably connected on the rotating shaft (2-3), the supporting square pipe (2-1) is positioned in the recovery groove (1-2), the locking hole (2-2) is arranged at the lower end of the supporting square pipe (2-1), the adjusting bolt (2-4) is in threaded connection with the upper end of the supporting square pipe (2-1), the sliding support rod (2-5) is in the supporting square pipe (2-1), adjusting bolts (2-4) tightly push sliding support rods (2-5), mounting shafts (2-6) are rotatably connected to the upper ends of the sliding support rods (2-5), unfolding holes (2-7) and folding holes (2-8) are formed in the upper ends of the sliding support rods (2-5), display frames (3) are rotatably connected to the mounting shafts (2-6), display frame locking devices (4) are connected into the unfolding holes (2-7) in a clearance fit mode, and support locking devices (5) are slidably connected with the locking holes (2-2).

3. A portable billboard holder according to claim 2, in which: the showing stand (3) comprises a billboard (3-1), rotating plates (3-2), rotating plate rotating holes (3-3), rotating plate mounting holes (3-4), rotating plate showing holes (3-5), connecting plates (3-6) and hanging cross rods (3-7), wherein the rotating plate rotating holes (3-3), the rotating plate mounting holes (3-4) and the rotating plate showing holes (3-5) are all arranged on the rotating plates (3-2), two rotating plates (3-2) are arranged, the two rotating plates (3-2) are fixedly connected to the lower end of the billboard (3-1), two ends of a mounting shaft (2-6) are respectively rotatably connected with the two rotating plate mounting holes (3-4), sliding supporting rods (2-5) are positioned between the two rotating plates (3-2), two connecting plates (3-6) are arranged, the two connecting plates (3-6) are fixedly connected to the upper end of the billboard (3-1), the hanging cross bar (3-7) is fixedly connected to the two connecting plates (3-6), and the display rack locking device (4) is in clearance fit connection with the two rotating plate display holes (3-5).

4. a portable billboard holder according to claim 3, in which: the display rack locking device (4) comprises a pull ring I (4-1), a baffle plate (4-2), a threaded rod (4-3) and a nut (4-4), wherein the pull ring I (4-1) is fixedly connected onto the baffle plate (4-2), the baffle plate (4-2) is fixedly connected to one end of the threaded rod (4-3), the nut (4-4) is in threaded connection with the other end of the threaded rod (4-3), and the threaded rod (4-3) penetrates through the exhibition hole (2-7) and is connected into the two rotating plate display holes (3-5) in a clearance fit mode.

5. a portable billboard holder according to claim 4, in which: the support locking device (5) comprises a pull ring II (5-1), a limiting plate (5-2), a sliding lock rod (5-3), a spring (5-4) and a baffle ring (5-5), wherein the pull ring II (5-1) is fixedly connected to the limiting plate (5-2), the limiting plate (5-2) is fixedly connected to one end of the sliding lock rod (5-3), the baffle ring (5-5) is fixedly connected to the other end of the sliding lock rod (5-3), the spring (5-4) is sleeved on the sliding lock rod (5-3), the sliding lock rod (5-3) and the baffle ring (5-5) are in clearance fit sliding connection in a locking mounting hole (1-4), the spring (5-4) is located in the locking mounting hole (1-4), one end of the spring (5-4) is contacted with the baffle ring (5-5), one end of the spring (5-4) is contacted with the bottom plate (1-1), and one end of the sliding lock rod (5-3) is connected with the locking hole (2-2) in a sliding way.