CN110322802A - A kind of sales publicity Dynamic Display board - Google Patents

Abstract

The present invention relates to a display board, more specifically a dynamic display board for marketing promotion, including a base, a bottom frame, a circular turntable, a display board frame and an elastic mechanism. The bottom frame in the present invention can rotate on the base, Realize the adjustment of the angle of the display card rack; the circular turntable can rotate in a circle on the bottom frame to realize dynamic display. The soft display card is used to hang between the two display card racks, and the soft display card is easy to disassemble. The bottom frame is hingedly connected to the base, and the circular turntable is rotatably connected to the upper end of the bottom frame. There are two display card stands on the left and right. It is connected to the middle end of the circular turntable, and the left and right ends of the elastic force mechanism are hingedly connected with two display card holders respectively.

Description

A dynamic display board for marketing promotion

technical field

The invention relates to a display board, in particular to a dynamic display board for marketing promotion.

Background technique

The application number is CN201810715305.9, which discloses an easy-to-replace outdoor intelligent display board. The invention discloses an easy-to-replace outdoor intelligent display board, which belongs to the technical field of intelligent display screens. Including display card body and base; display card body includes display screen, waterproof sound, ring groove, thickened wall; display screen is provided on one opposite side of display card body; one end of an opposite side of display card body There is a thickened wall; the peripheral side of the display card body is provided with a ring groove; the bottom surface of an opposite groove of the ring groove is provided with sound holes; the base includes a guide block, a guide groove, and a seat body; the guide block is located on one side of the guide groove In the middle position; the other side of the guide groove is compounded with a body; the guide block provided on the base is matched with the ring groove provided on one side of the display board body. The present invention places the base body in the rectangular hole so that the cement fills the gaps provided on the base body, improving the firmness of the base installation and prolonging the service life of the base; and the installation process is simple. But the display board cannot be displayed dynamically.

Contents of the invention

The present invention provides a dynamic display card for marketing and publicity. The beneficial effect is that the bottom frame in the present invention can be rotated on the base to realize the adjustment of the angle of the display card frame; the circular turntable can be rotated on the bottom frame to realize dynamic display , The soft display card is used to hang between the two display card racks, and the soft display card is easy to disassemble.

The present invention relates to a display card, more specifically a dynamic display card for marketing promotion, including a base, a chassis, a circular turntable, a display card frame and an elastic mechanism. The chassis in the present invention can rotate on the base, Realize the adjustment of the angle of the display card rack; the circular turntable can rotate in a circle on the bottom frame to realize dynamic display. The soft display card is used to hang between the two display card racks, and the soft display card is easy to disassemble.

The bottom frame is hingedly connected to the base, and the circumferential turntable is connected to the upper end of the bottom frame in rotation. There are two display card stands on the left and right, and the two display card stands are respectively slidably connected to the left and right ends of the circumferential turntable, and the elastic mechanism is fixed Connected to the middle end of the circular turntable, the left and right ends of the elastic force mechanism are hingedly connected to the two display card holders respectively.

Described base comprises base plate, bottom bar, convex seat, T-shaped slide rail, inclined bar, leading screw, motor base 1, motor 1 and slide block, and bottom bar is provided with two left and right sides, is connected by base plate between two bottom bars. Connection, the middle end of the bottom plate is fixedly connected with a T-shaped slide rail, the T-shaped slide rail is slidably connected with a slider, the upper end of the slider is hingedly connected with a diagonal rod, and the rear end of the bottom plate is fixedly connected with a motor base I, and the motor base I The rear end is fixedly connected with motor 1, and the front end output shaft of motor 1 is fixedly connected with leading screw, and the leading screw is matched with slide block by thread, and the front ends of two bottom bars are all fixedly connected with convex seat.

The underframe includes a lower horizontal column, an end shaft, a connecting column, a circular shaft, an upper horizontal column, a central axis, a limit ring, a gear, a motor seat II and a motor, and the left and right ends of the lower horizontal column are fixedly connected with an end shaft , the two end shafts are rotatably connected to the two convex seats respectively, the left and right ends of the upper end of the lower horizontal column are fixedly connected with connecting columns, the middle ends of the two connecting columns are fixedly connected with round shafts, and the two connecting columns An upper cross column is fixedly connected between the upper ends, a motor base II is fixedly connected to the upper cross column, a motor is fixedly connected to the motor base II, a gear is fixedly connected to the output shaft of the upper end of the motor, and the middle position of the upper end of the upper cross column is fixedly connected to There is a central shaft, the upper end of the central shaft is fixedly connected to the limit ring, and the upper end of the inclined rod is rotatably connected to the circular shaft.

The circular turntable includes a sleeve, a gear ring, a horizontal bar, a vertical bar, a flat plate and a trapezoidal slide rail. The gear ring is fixedly connected to the sleeve, and the sleeve is rotatably connected to the central axis. Between the horizontal columns, the gear and the toothed ring are meshed for transmission. The left and right ends of the sleeve are fixedly connected with the horizontal rods, the outer ends of the two horizontal rods are fixedly connected with the vertical rods, and the upper ends of the two vertical rods are fixedly connected with the vertical rods. The flat plate is fixedly connected with a trapezoidal slide rail at the upper end of the flat plate.

The display card rack includes a sliding seat, a hinged seat, a vertical frame rod, a round rod and a notch, the sliding seat is provided with a hinged seat, the upper end of the sliding seat is fixedly connected with a vertical frame rod, and the upper and lower ends of the vertical frame rod front end are The round rods are fixedly connected, the upper and lower ends of the rear end of the vertical frame rods are fixedly connected with round rods, and the outer ends of the multiple round rods are provided with notches; the two sliding seats on the two display racks are respectively slidably connected to the The left and right ends of the slide rail.

The elastic mechanism includes a spring sleeve rod, an equal arm rod, a sliding sleeve, a sliding disc and a fixed disc, the spring sleeve rod is fixedly connected to the middle end of the trapezoidal slide rail, the upper end of the sliding sleeve is fixedly connected with a sliding disc, and the sliding sleeve Both the sliding disc and the sliding disc are slidably connected on the spring sleeve rod, the uppermost end of the spring sleeve rod is fixedly connected with the fixed disc, and the spring sleeve rod between the fixed disc and the sliding disc is sleeved with a compression spring, and the left and right sides of the sliding sleeve Both ends are hingedly connected with equal arm bars, and the other ends of the two equal arm bars are respectively hingedly connected to two hinge seats.

The base also includes screw holes, and the four corners of the bottom plate are all provided with screw holes.

The display board frame also includes a pair of display boards, and the outer sides of the two vertical frame rods are fixedly connected with the pair of display boards.

The beneficial effect of a marketing publicity dynamic display board of the present invention is:

The present invention is a dynamic display card for marketing promotion. The bottom frame in the invention can be rotated on the base to realize the adjustment of the angle of the display card frame; the circular turntable can be rotated on the bottom frame to realize dynamic display. The soft display boards are used to hang between the shelves, and the soft display boards are easy to disassemble.

Description of drawings

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

Fig. 1 is a schematic diagram of the overall structure of a dynamic display board for marketing and publicity according to the present invention;

Fig. 2 is a schematic diagram 2 of the overall structure of a dynamic display board for marketing publicity according to the present invention;

Fig. 3 is a structural schematic diagram 1 of the base;

Fig. 4 is the structural schematic diagram II of base;

Fig. 5 is the structural representation of chassis;

Fig. 6 is a schematic structural view of a circumferential turret;

Fig. 7 is a structural schematic diagram 1 of a display card stand;

Fig. 8 is a structural schematic diagram 2 of the display card holder;

Fig. 9 is a structural schematic diagram 1 of the elastic mechanism;

Fig. 10 is the second structural diagram of the elastic mechanism.

In the figure: base 1; bottom plate 1-1; screw socket 1-2; bottom rod 1-3; convex seat 1-4; T-shaped slide rail 1-5; inclined rod 1-6; lead screw 1-7; Motor base I1-8; Motor I1-9; Slider 1-10; Underframe 2; Lower horizontal column 2-1; End shaft 2-2; Connecting column 2-3; -5; Axis 2-6; Limit ring 2-7; Gear 2-8; Motor seat II2-9; Motor 2-10; Rod 3-3; vertical rod 3-4; flat plate 3-5; trapezoidal slide rail 3-6; -4; notch 4-5; deputy display board 4-6; elastic mechanism 5; spring sleeve rod 5-1; 5-5.

Detailed ways

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

Specific implementation mode one:

The present embodiment will be described below in conjunction with FIGS. 1-10. The present invention relates to a display card, more specifically a dynamic display card for marketing promotion, including a base 1, an underframe 2, a circular turntable 3, a display card frame 4 and Elastic force mechanism 5, underframe 2 among the present invention can be rotated on base 1, realizes adjusting the angle of display card frame 4; 4 are used to hang soft display boards, and the soft display boards are easy to disassemble.

The bottom frame 2 is hingedly connected to the base 1, and the circumferential turntable 3 is rotatably connected to the upper end of the bottom frame 2. There are two display card frames 4 on the left and right, and the two display card frames 4 are respectively slidably connected to the ends of the circumferential turntable 3. At the left and right ends, the elastic force mechanism 5 is fixedly connected to the middle end of the circumferential turret 3 , and the left and right ends of the elastic force mechanism 5 are respectively hingedly connected with two display card holders 4 .

Specific implementation mode two:

This embodiment will be described below with reference to Figures 1-10. The base 1 includes a bottom plate 1-1, a bottom bar 1-3, a convex seat 1-4, a T-shaped slide rail 1-5, a diagonal bar 1-6, and a screw 1. -7, motor seat I1-8, motor I1-9 and slide block 1-10, bottom bar 1-3 left and right sides are provided with two, are connected by base plate 1-1 between two bottom bars 1-3, base plate 1 The middle end of -1 is fixedly connected with a T-shaped slide rail 1-5, and the upper end of the T-shaped slide rail 1-5 is slidably connected with a slider 1-10, and the upper end of the slider 1-10 is hingedly connected with a diagonal rod 1-6, and the bottom plate The rear end of 1-1 is fixedly connected with motor base I1-8, the rear end of motor base I1-8 is fixedly connected with motor I1-9, and the front output shaft of motor I1-9 is fixedly connected with lead screw 1-7, screw Bar 1-7 cooperates with slide block 1-10 by screw thread, and the front ends of two bottom rods 1-3 are all fixedly connected with boss 1-4. When the output shaft of the motor I1-9 rotates, it drives the lead screw 1-7 to rotate on its own axis, and when the lead screw 1-7 rotates on its own axis, it drives the slider 1-10 to move upward on the T-shaped slide rail 1-5. Swipe forward or backward.

Specific implementation mode three:

The present embodiment will be described below with reference to FIGS. Shaft 2-6, limit ring 2-7, gear 2-8, motor seat II2-9 and motor 2-10, the left and right ends of lower cross column 2-1 are fixedly connected with end shaft 2-2, two The end shafts 2-2 are respectively rotatably connected to the two bosses 1-4, the left and right ends of the upper end of the lower horizontal column 2-1 are fixedly connected with the connecting columns 2-3, and the middle ends of the two connecting columns 2-3 A round shaft 2-4 is fixedly connected between them, and an upper horizontal column 2-5 is fixedly connected between the upper ends of the two connecting columns 2-3, and the upper horizontal column 2-5 is fixedly connected with a motor seat II2-9, and a motor seat II2 -9 is fixedly connected with a motor 2-10, the upper output shaft of the motor 2-10 is fixedly connected with a gear 2-8, and the middle position of the upper end of the upper horizontal column 2-5 is fixedly connected with a central shaft 2-6, a central shaft 2 The upper end of -6 is fixedly connected with the limit ring 2-7, and the upper end of the inclined rod 1-6 is rotatably connected with the circular shaft 2-4. The two end shafts 2-2 can rotate on the two convex seats 1-4 respectively, so that the lower cross column 2-1 can rotate around the axes of the two end shafts 2-2, and the slider 1-10 is at T When sliding forward or backward on the sliding rail 1-5, the bottom frame 2 will be driven by the inclined rod 1-6 to rotate on the axis of the two end shafts 2-2, the angle of the bottom frame 2 will be adjusted, and then the two ends will be adjusted. A display card stand 4 angles.

Specific implementation mode four:

The present embodiment will be described below in conjunction with Figs. 1-10. The circular turntable 3 includes a sleeve 3-1, a gear ring 3-2, a cross bar 3-3, a vertical bar 3-4, a flat plate 3-5 and a trapezoidal slide rail. 3-6, the ring gear 3-2 is fixedly connected to the sleeve 3-1, the sleeve 3-1 is rotatably connected to the central shaft 2-6, and the sleeve 3-1 is located at the limit ring 2-7 and the upper horizontal column Between 2-5, the gear 2-8 is meshed with the gear ring 3-2 for transmission, the left and right ends of the sleeve 3-1 are fixedly connected with a crossbar 3-3, and the outer ends of the two crossbars 3-3 are fixed A vertical bar 3-4 is connected, a flat plate 3-5 is fixedly connected between the upper ends of the two vertical bars 3-4, and a trapezoidal slide rail 3-6 is fixedly connected to the upper end of the flat plate 3-5. The sleeve 3-1 can rotate on the central shaft 2-6 with the axis of the central shaft 2-6 as the axis. When the output shaft of the motor 2-10 rotates, it drives the gear 2-8 to rotate, and when the gear 2-8 rotates, it drives the gear ring 3-2 and the sleeve 3-1 rotate around the axis of the central axis 2-6, and then make the entire circumference turntable 3 rotate around the axis of the central axis 2-6, driving the two display card holders 4 around the axis The axis of 2-6 is a shaft rotation to realize dynamic display.

Specific implementation mode five:

The present embodiment is described below in conjunction with Fig. 1-10, and described display board frame 4 comprises sliding seat 4-1, hinged seat 4-2, vertical stand bar 4-3, round bar 4-4 and notch 4-5, slides The seat 4-1 is provided with a hinged seat 4-2, the upper end of the sliding seat 4-1 is fixedly connected with a vertical rod 4-3, and the upper and lower ends of the front end of the vertical rod 4-3 are fixedly connected with a round rod 4-4. , the upper and lower ends of the rear end of the vertical frame rod 4-3 are fixedly connected with round rods 4-4, and the outer ends of a plurality of round rods 4-4 are provided with notches 4-5; Two sliding seats 4-1 are slidably connected to the left and right ends of the trapezoidal slide rail 3-6 respectively. Both sliding seats 4-1 can slide left or right on the trapezoidal slide rail 3-6, cut out round holes at the four corners of the soft display board, and place the four corners of the soft display board After inserting the round holes in the notches 4-5 on the four round rods 4-4, the sliding seat 4-1 can be moved away from the slide and the soft display board can be displayed. This device can hang two Soft display board, a soft display board can be hung between the four round bars 4-4 at the front end, another soft display board can be hung between the four round bars 4-4 at the rear end, soft Quality display cards can be selected from cloth or paper, and the soft display cards rotate with the axis of the central axis 2-6 along with the two display card holders 4 to realize dynamic display.

Specific implementation method six:

The present embodiment is described below in conjunction with Fig. 1-10, and described elastic force mechanism 5 comprises spring cover bar 5-1, equal arm bar 5-2, sliding sleeve 5-3, sliding disc 5-4 and fixed disc 5-5 , the spring sleeve rod 5-1 is fixedly connected to the middle end of the trapezoidal slide rail 3-6, and the upper end of the sliding sleeve 5-3 is fixedly connected to the sliding disc 5-4, and the sliding sleeve 5-3 and the sliding disc 5-4 are both Slidingly connected on the spring sleeve rod 5-1, the uppermost end of the spring sleeve rod 5-1 is fixedly connected with the fixed disc 5-5, the spring sleeve rod 5 between the fixed disc 5-5 and the sliding disc 5-4 -1 is sleeved with a compression spring, and the left and right ends of the sliding sleeve 5-3 are hingedly connected with an equal arm 5-2, and the other ends of the two equal arm 5-2 are respectively hingedly connected to two hinged seats 4- 2 on. The compression spring on the spring sleeve rod 5-1 gives the sliding disc 5-4 and the sliding sleeve 5-3 the power to move downwards, so that the sliding sleeve 5-3 has a tendency to move downwards all the time, and the sliding sleeve 5-3 moves downward. When moving, drive the two sliding seats 4-1 away from the movement respectively through the two equal arms 5-2, so that the two display card holders 4 will stretch the soft display cards. When the soft display cards need to be removed, move upward Pull sliding sleeve 5-3, make two display card holders 4 approach, be convenient to the soft display card is unloaded.

Specific implementation mode seven:

The present embodiment will be described below with reference to FIGS. 1-10 . The base 1 further includes screw insertion holes 1-2, and the four corners of the bottom plate 1-1 are provided with screw insertion holes. Screws can be inserted into the screw sockets, thereby fixing the base 1 .

Specific implementation mode eight:

The present embodiment will be described below with reference to FIGS. 1-10 . The display card frame 4 further includes a secondary display card 4-6, and the outer sides of the two vertical stand bars 4-3 are fixedly connected with the secondary display card 4-6. Sub-display boards 4-6 can paste other display content

Working principle of the present invention: when the output shaft of the motor I1-9 rotates, it drives the lead screw 1-7 to rotate with its own axis as the axis, and when the lead screw 1-7 rotates with its own axis as the axis, it drives the slider 1-10 to slide on the T-shaped slide. Slide forward or backward on rails 1-5. The two end shafts 2-2 can rotate on the two convex seats 1-4 respectively, so that the lower cross column 2-1 can rotate around the axes of the two end shafts 2-2, and the slider 1-10 is at T When sliding forward or backward on the sliding rail 1-5, the bottom frame 2 will be driven by the inclined rod 1-6 to rotate on the axis of the two end shafts 2-2, the angle of the bottom frame 2 will be adjusted, and then the two ends will be adjusted. A display card stand 4 angles. The sleeve 3-1 can rotate on the central shaft 2-6 with the axis of the central shaft 2-6 as the axis. When the output shaft of the motor 2-10 rotates, it drives the gear 2-8 to rotate, and when the gear 2-8 rotates, it drives the gear ring 3-2 and the sleeve 3-1 rotate around the axis of the central axis 2-6, and then make the entire circumference turntable 3 rotate around the axis of the central axis 2-6, driving the two display card holders 4 around the axis The axis of 2-6 is the shaft rotation to realize dynamic display. Both sliding seats 4-1 can slide left or right on the trapezoidal slide rail 3-6, cut out round holes at the four corners of the soft display board, and place the four corners of the soft display board After inserting the round holes on the notches 4-5 on the four round rods 4-4, the sliding seat 4-1 can be far away from the slide and the soft display board can be displayed. This device can hang two Soft display board, a soft display board can be hung between the four round bars 4-4 at the front end, another soft display board can be hung between the four round bars 4-4 at the rear end, soft Quality display boards can be selected from cloth or paper, and the soft display boards rotate with the axis of the central axis 2-6 along with the two display board racks 4 to realize dynamic display. The compression spring on the spring sleeve rod 5-1 gives the sliding disc 5-4 and the sliding sleeve 5-3 the power to move downwards, so that the sliding sleeve 5-3 has a tendency to move downwards all the time, and the sliding sleeve 5-3 moves downward. When moving, drive the two sliding seats 4-1 away from the movement respectively through the two equal arms 5-2, so that the two display card holders 4 will stretch the soft display cards. When the soft display cards need to be removed, move upward Pull sliding sleeve 5-3, make two display card holders 4 approach, be convenient to the soft display card is unloaded.

Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or replacements made by those skilled in the art within the scope of the present invention also belong to the scope of the present invention. protected range.

Claims (8)

1. A dynamic display board for marketing promotion, comprising a base (1), an underframe (2), a circular turntable (3), a display card holder (4) and an elastic force mechanism (5), characterized in that: the underframe (2) It is hingedly connected on the base (1), and the circumferential turret (3) is rotatably connected to the upper end of the bottom frame (2). Slidingly connected to the left and right ends of the circular turntable (3), the elastic force mechanism (5) is fixedly connected to the middle end of the circumferential turntable (3), and the left and right ends of the elastic force mechanism (5) are respectively connected with two display card holders (4 ) hinged connection. 2. A dynamic display board for marketing promotion according to claim 1, characterized in that: the base (1) includes a bottom plate (1-1), a bottom bar (1-3), and a convex seat (1-4) , T-shaped slide rail (1-5), inclined rod (1-6), lead screw (1-7), motor base I (1-8), motor I (1-9) and slider (1-10 ), the bottom bar (1-3) is provided with two left and right, and the two bottom bars (1-3) are connected through the bottom plate (1-1), and the middle end of the bottom plate (1-1) is fixedly connected with a T-shaped The slide rail (1-5), the T-shaped slide rail (1-5) is slidably connected with a slide block (1-10), the upper end of the slide block (1-10) is hingedly connected with a diagonal bar (1-6), and the bottom plate The rear end of (1-1) is fixedly connected with motor base I (1-8), and the rear end of motor base I (1-8) is fixedly connected with motor I (1-9), and motor I (1-9) A lead screw (1-7) is fixedly connected to the output shaft at the front end, and the lead screw (1-7) cooperates with the slide block (1-10) through threads, and the front ends of the two bottom rods (1-3) are fixedly connected with Bosses (1-4). 3. A dynamic display board for marketing promotion according to claim 2, characterized in that: the chassis (2) includes a lower horizontal column (2-1), an end shaft (2-2), a connecting column (2 -3), circular shaft (2-4), upper horizontal column (2-5), middle shaft (2-6), limit ring (2-7), gear (2-8), motor seat II (2 -9) and motor (2-10), the left and right ends of the lower cross column (2-1) are all fixedly connected with end shafts (2-2), and the two end shafts (2-2) are respectively connected in rotation on two On the convex seat (1-4), the left and right ends of the upper end of the lower horizontal column (2-1) are fixedly connected with connecting columns (2-3), and the middle ends of the two connecting columns (2-3) are fixedly connected There is a circular shaft (2-4), an upper cross column (2-5) is fixedly connected between the upper ends of the two connecting columns (2-3), and a motor seat II ( 2-9), the motor base II (2-9) is fixedly connected with a motor (2-10), the upper output shaft of the motor (2-10) is fixedly connected with a gear (2-8), and the upper horizontal column (2 -5) The middle position of the upper end is fixedly connected with the central axis (2-6), the upper end of the central axis (2-6) is fixedly connected with the limit ring (2-7), and the upper end of the oblique rod (1-6) is rotatably connected to the On the round shaft (2-4). 4. A dynamic display board for marketing promotion according to claim 3, characterized in that: said circumferential turret (3) comprises a sleeve (3-1), a toothed ring (3-2), a cross bar (3 -3), vertical rod (3-4), flat plate (3-5) and trapezoidal slide rail (3-6), the sleeve (3-1) is fixedly connected with gear ring (3-2), sleeve ( 3-1) Rotationally connected to the center shaft (2-6), the sleeve (3-1) is located between the limit ring (2-7) and the upper cross column (2-5), the gear (2-8) Mesh transmission with the gear ring (3-2), the left and right ends of the sleeve (3-1) are fixedly connected with crossbars (3-3), and the outer ends of the two crossbars (3-3) are fixedly connected with A vertical bar (3-4), a flat plate (3-5) is fixedly connected between the upper ends of the two vertical bars (3-4), and a trapezoidal slide rail (3-6) is fixedly connected to the upper end of the flat plate (3-5) . 5. A kind of marketing publicity dynamic display card according to claim 4, characterized in that: said display card frame (4) comprises a sliding seat (4-1), a hinged seat (4-2), a vertical frame rod ( 4-3), a round rod (4-4) and a notch (4-5), the sliding seat (4-1) is provided with a hinged seat (4-2), and the upper end of the sliding seat (4-1) is fixedly connected Vertical frame rod (4-3) is arranged, and the upper and lower ends of the vertical frame rod (4-3) front end are fixedly connected with round rods (4-4), and the upper and lower ends of the vertical frame rod (4-3) rear end are all fixed Connected with round rods (4-4), the outer ends of a plurality of round rods (4-4) are provided with notches (4-5); two sliding seats (4-5) on the two display card racks (4) 1) Slidingly connected to the left and right ends of the trapezoidal slide rail (3-6) respectively. 6. A dynamic display card for marketing promotion according to claim 5, characterized in that: said elastic force mechanism (5) includes a spring sleeve rod (5-1), an isometric rod (5-2), a sliding sleeve ( 5-3), the sliding disc (5-4) and the fixed disc (5-5), the spring sleeve rod (5-1) is fixedly connected to the middle end of the trapezoidal slide rail (3-6), and the sliding sleeve (5-5 The upper end of -3) is fixedly connected with a sliding disc (5-4), the sliding sleeve (5-3) and the sliding disc (5-4) are all slidably connected to the spring sleeve rod (5-1), and the spring sleeve rod The uppermost end of (5-1) is fixedly connected with a fixed disc (5-5), and the spring sleeve bar (5-1) between the fixed disc (5-5) and the sliding disc (5-4) is put on Connected with a compression spring, the left and right ends of the sliding sleeve (5-3) are hingedly connected with an equal arm (5-2), and the other ends of the two equal arm (5-2) are respectively hingedly connected to two hinged seats (4-2) up. 7. A dynamic display board for marketing promotion according to claim 2, characterized in that: the base (1) also includes screw holes (1-2), and the four corners of the bottom plate (1-1) are all Comes with screw holes. 8. A dynamic display board for marketing promotion according to claim 1, characterized in that: said display board rack (4) also includes a secondary display board (4-6), two vertical rack bars (4-3) The outer sides are fixedly connected with secondary display boards (4-6).