CN113827075B

CN113827075B - Automatic light display adjusting device for exhibition

Info

Publication number: CN113827075B
Application number: CN202111134877.6A
Authority: CN
Inventors: 李科
Original assignee: Beijing Sanyueyu Culture Communication Co ltd
Current assignee: Beijing Sanyueyu Culture Communication Co ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-07-29
Anticipated expiration: 2041-09-27
Also published as: CN113827075A

Abstract

The invention discloses an automatic adjusting device for light display for exhibition, which belongs to the technical field of exhibition equipment and comprises a display stand, wherein a cavity is arranged in the display stand, a lifting mechanism for adjusting the height is arranged in the cavity, a rotating mechanism for rotating is arranged at the top end of the lifting mechanism, an adjusting mechanism for adjusting the position of a light work is arranged at the top end of the rotating mechanism, a containing groove is arranged at the side end of the cavity, and a sealing mechanism is connected in the containing groove in a sliding manner; according to the invention, the lifting mechanism is arranged in the cavity of the display platform, and the first mounting plate can be driven to move up and down to carry out lifting work through the mutual matching of the threaded column on the lifting mechanism, the gear and the rack, so that the storage and use of workers are facilitated, and the sealing mechanism is used for protecting, so that the ash falling is reduced, and the service life of the equipment is prolonged.

Description

Automatic light display adjusting device for exhibition

Technical Field

The invention belongs to the technical field of exhibition equipment, and particularly relates to an automatic light display adjusting device for exhibition.

Background

Along with the development of economy and the improvement of living standard of people, various exhibitions are more and more, when the light exhibition is carried out, people can put newly researched and developed light works on the exhibition stand for exhibition, a good exhibition stand not only can well show the products to audiences and attract eyes and increase the popularity, but most of the existing exhibition stands are fixed, the height of the exhibition stand cannot be adjusted, the placement of workers is inconvenient, the observation angles of observers with different heights are different and influence the exhibition effect, and most of the existing light exhibition stands are fixedly arranged at a certain position, the angles and the positions of the existing light exhibition stands are inconvenient to adjust, the observers can influence the observation effect when watching, so that the maximum charm of the light exhibition works cannot be given off, and the exhibition stand is not taken by people and can easily fall grey after long-term use on the exhibition equipment, the service life of the display equipment is influenced when the display equipment becomes old and is not protected, so that the development of the light display adjusting device for exhibition is necessary.

Disclosure of Invention

In view of the shortcomings of the prior art, the present invention provides an automatic adjusting device for light exhibition, which is provided with a lifting mechanism, a rotating mechanism, an adjusting mechanism and a sealing mechanism to solve the problems encountered in the background art.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides an exhibition is light show automatic regulating apparatus for show, includes the show stand, be equipped with the cavity in the show stand, be equipped with the elevating system who is used for height-adjusting in the cavity, be equipped with on elevating system's the top and be used for rotatory slewing mechanism, slewing mechanism's top is equipped with the adjustment mechanism who adjusts the light work position, the side of cavity is equipped with accomodates the groove, accomodate inslot sliding connection has sealing mechanism.

Further, the lifting mechanism comprises a bottom plate connected with the bottom of the cavity, two first mounting columns are symmetrically arranged on the bottom plate, the inner side of the first mounting column is rotatably connected with a first gear, a first connecting plate is fixedly arranged at the rotating shaft end of the first gear, the first connecting plate is movably connected with a second connecting plate, the side edge of the first mounting column is provided with two second mounting columns, a second gear is rotatably connected to the inner side of the second mounting column, a third connecting plate is fixedly arranged at the rotating shaft end of the second gear, a fourth connecting plate is movably connected on the third connecting plate, the top ends of the second connecting plate and the fourth connecting plate are movably connected with a first mounting plate, the rotating mechanism is located on the first mounting plate, the first gear is meshed with a first rack, the second gear is meshed with a second rack, and a bearing plate is connected between the first rack and the second rack.

Further, still be equipped with the locating part between first erection column and the second erection column, locating part and second rack sliding connection, two be equipped with the mount table between the first erection column, it is connected with the screw thread post to rotate on the mount table, the screw thread post rotates with the board of accepting to be connected, the one end of screw thread post is equipped with a driving motor, the other end of screw thread post is equipped with the baffle, still be connected with flexible spacing post between the first mounting panel bottom plate.

Further, slewing mechanism includes the second mounting panel of being connected with elevating system, the intermediate position of second mounting panel has been seted up and has been changeed the hole, be equipped with the rotation post in changeing the downthehole, the bottom of rotating the post is equipped with second driving motor, be equipped with automatically controlled telescopic link on the top intermediate position of rotation post, the bilateral symmetry of automatically controlled telescopic link is equipped with telescopic adjusting rod, telescopic adjusting rod is equipped with the rotation mounting disc with automatically controlled telescopic link's top, adjustment mechanism is located and rotates the mounting disc.

Further, adjustment mechanism includes the third mounting panel of being connected with slewing mechanism, the backplate has immediately on the third mounting panel, there is the third gear intermediate position of backplate through the rotation axis connection, the other end of axis of rotation is connected with third driving motor, the top of axis of rotation is equipped with first fixed column, it is connected with the fourth gear to rotate on the outer wall of first fixed column, fourth gear and third gear engagement, the fixed first conical gear that is equipped with in top of first fixed column, the meshing has second conical gear on the first conical gear, be equipped with the spliced pole on the second conical gear, the top of spliced pole is equipped with the third conical gear.

Further, a supporting plate is arranged at the end of the rotating shaft of the first conical gear, a fourth conical gear is fixedly arranged on the supporting plate close to the top end and meshed with the third conical gear, the supporting plate is connected with the connecting column through a fifth connecting plate, a second fixing column is arranged at the front end of the fourth conical gear, a display plate is arranged at the front end of the second fixing column, a U-shaped column is arranged at the tail end of the fourth conical gear, and two rotating wheels are arranged at the tail end of the U-shaped column.

Furthermore, an annular detour is further arranged on the back plate, and the two rotating wheels are respectively matched with the inner side and the outer side of the annular detour.

Further, sealing mechanism includes the sliding block, the both sides of sliding block are equipped with the slip hangers, the inner wall both sides swing joint of slip hangers and holding groove, the symmetry is equipped with two first flutings on the sliding block, first fluting internalization is equipped with the turning block, two be connected with the sealing door on the turning block, be equipped with the sealing strip around the sealing door, the second fluting has been seted up on the intermediate position of sealing door, the second fluting internal rotation is connected with the handle.

The invention has the beneficial effects that:

1. According to the invention, the lifting mechanism is arranged in the cavity of the display platform, and the first mounting plate can be driven to move up and down to carry out lifting work through the mutual matching of the threaded column on the lifting mechanism, the gear and the rack, so that the storage and use of workers are facilitated, and the sealing mechanism is used for protecting, so that the ash falling is reduced, and the service life of the equipment is prolonged.

2. The invention drives the whole display equipment to rotate according to the requirement through the rotating column on the rotating mechanism, adjusts the display angle, and adjusts the display height through the electric control telescopic rod and the telescopic adjusting rod.

3. According to the invention, the displayed works can be driven to move annularly through the mutual matching of the gears on the adjusting mechanism, so that the display effect is increased, meanwhile, through the matching of the four conical gears, the displayed works can be always in a stable state during the annular movement, the attractiveness of the lamplight displayed works is increased, and the lamplight works can be prevented from being changed in position during rotation, so that the viewing experience of a viewer is influenced.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram I of the lifting mechanism;

FIG. 3 is a schematic structural view II of the lifting mechanism;

FIG. 4 is a schematic structural view of a rotating mechanism;

FIG. 5 is a schematic structural diagram I of an adjustment mechanism;

FIG. 6 is a schematic view II of the adjustment mechanism;

fig. 7 is a schematic structural view of the sealing mechanism.

The reference numbers in the figures illustrate:

1. a display stand; 2. a cavity; 3. a lifting mechanism; 4. a rotating mechanism; 5. an adjustment mechanism; 6. a receiving groove; 7. a sealing mechanism; 301. a base plate; 302. a first mounting post; 303. a first gear; 304. a first connecting plate; 305. a second connecting plate; 306. a second mounting post; 307. a second gear; 308. a third connecting plate; 309. a fourth connecting plate; 310. a first mounting plate; 311. a first rack; 312. a second rack; 313. a bearing plate; 314. a limiting member; 315. an installation table; 316. a threaded post; 317. a first drive motor; 318. a baffle plate; 319. a telescopic limit column; 401. a second mounting plate; 402. hole turning; 403. rotating the column; 404. a second drive motor; 405. an electric control telescopic rod; 406. a telescopic adjusting rod; 407. rotating the mounting plate; 501. a third mounting plate; 502. a back plate; 503. a rotating shaft; 504. a third gear; 505. a third drive motor; 506. a first fixed column; 507. a fourth gear; 508. a first bevel gear; 509. a second bevel gear; 510. connecting columns; 511. a third bevel gear; 512. a support plate; 513. a fourth bevel gear; 514. a fifth connecting plate; 515. a second fixed column; 516. a display board; 517. a U-shaped column; 518. a rotating wheel; 519. an annular detour; 701. a slider; 702. sliding the hangers; 703. a first slot; 704. rotating the block; 705. a sealing door; 706. a sealing strip; 707. a second slot; 708. and (6) turning the hand.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

The utility model provides a light show automatic regulating apparatus for exhibition show, as shown in fig. 1, including show stand 1, be equipped with cavity 2 in the show stand 1, be equipped with the elevating system 3 that is used for height-adjusting in the cavity 2, be equipped with on elevating system 3's the top and be used for rotatory slewing mechanism 4, slewing mechanism 4's top is equipped with the adjustment mechanism 5 that adjusts the light works position, the side of cavity 2 is equipped with accomodates groove 6, it has sealing mechanism 7 to accomodate inslot 6 sliding connection, elevating system 3 can contract slewing mechanism 4 and adjustment mechanism 5 inside cavity 2, seal protection through sealing mechanism 7, the easy emergence of deposition of reducible display device when not using, increase pleasing to the eye, and elevating system 3 can reduce adjustment mechanism 5's position, make things convenient for the staff to place and change light show works on adjustment mechanism 5.

As shown in fig. 2 and 3, the lifting mechanism 3 includes a bottom plate 301 connected to the bottom of the cavity 2, two first mounting posts 302 are symmetrically disposed on the bottom plate 301, a first gear 303 is rotatably connected to the inner side of the first mounting post 302, a first connecting plate 304 is fixedly disposed on the rotating shaft end of the first gear 303, a second connecting plate 305 is movably connected to the first connecting plate 304, two second mounting posts 306 are disposed on the side edges of the first mounting post 302, a second gear 307 is rotatably connected to the inner side of the second mounting post 306, a third connecting plate 308 is fixedly disposed on the rotating shaft end of the second gear 307, a fourth connecting plate 309 is movably connected to the third connecting plate 308, a first mounting plate 310 is movably connected to the top ends of the second connecting plate 305 and the fourth connecting plate 309, the rotating mechanism 4 is disposed on the first mounting plate 310, a first rack 311 is engaged to the first gear 303, a second rack 312 is engaged to the second gear 307, a bearing plate 313 is connected between the first rack 311 and the second rack 312, a limiting member 314 is further arranged between the first mounting column 302 and the second mounting column 306, the limiting member 314 is connected with the second rack 312 in a sliding manner, the limiting member 314 can limit the second rack 312 from moving up and down in a random manner, so that the second rack 312 can be well meshed and matched with the second gear 307, a mounting table 315 is arranged between the two first mounting columns 302, a threaded column 316 is rotatably connected to the mounting table 315, the threaded column 316 is rotatably connected with the bearing plate 313, one end of the threaded column 316 is provided with a first driving motor 317, the other end of the threaded column 316 is provided with a baffle plate 318, a telescopic limiting column 319 is further connected between the bottom plates 301 of the first mounting plates 310, the first driving motor 317 can rotate to drive the threaded column 316 to rotate, the first gear 303 is matched with the bearing plate 313 through the threaded column 317, and the first rack 311, and the second gear 307 are meshed with the second rack 312, can drive the connecting plate and take place to rotate, through the cooperation of each rotor plate, go up and down first mounting panel 310, and the spacing post 319 of stretching out and drawing back that is equipped with and first driving motor 317 are all automatically controlled, and spacing post 319 of stretching out and drawing back can play limiting displacement, prevents that first mounting panel 310 from taking place when going up and down and controlling the translation, makes the stable reciprocating of first mounting panel 310, goes up and down.

As shown in fig. 4, the rotating mechanism 4 comprises a second mounting plate 401 connected to the lifting mechanism 3, a rotating hole 402 is formed in the middle of the second mounting plate 401, a rotating column 403 is disposed in the rotating hole 402, a second driving motor 404 is disposed at the bottom end of the rotating column 403, an electrically controlled telescopic rod 405 is disposed at the middle of the top end of the rotating column 403, telescopic adjusting rods 406 are symmetrically disposed on both sides of the electrically controlled telescopic rod 405, rotating mounting discs 407 are disposed at the top ends of the telescopic adjusting rods 406 and the electrically controlled telescopic rod 405, the adjusting mechanism 5 is disposed on the rotating mounting disc 407, the second driving motor 404 is electrically controlled, the second driving motor 404 can drive the rotating column 403 to rotate in the rotating hole 402, therefore, the angle of the display object arranged on the rotary mounting disc 407 is adjusted, and the height of the electric control telescopic rod 405 and the telescopic adjusting rod 406 can be properly adjusted, so that people with different heights can conveniently watch the display object.

As shown in fig. 5 and 6, the adjusting mechanism 5 includes a third mounting plate 501 connected to the rotating mechanism 4, a back plate 502 is erected on the third mounting plate 501, a third gear 504 is connected to the middle position of the back plate 502 through a rotating shaft 503, a third driving motor 505 is connected to the other end of the rotating shaft 503, a first fixing column 506 is arranged above the rotating shaft 503, a fourth gear 507 is rotatably connected to the outer wall of the first fixing column 506, the fourth gear 507 is engaged with the third gear 504, a first bevel gear 508 is fixedly arranged at the top end of the first fixing column 506, a second bevel gear 509 is engaged with the first bevel gear 508, a connecting column 510 is arranged on the second bevel gear 509, a third bevel gear 511 is arranged at the top end of the connecting column 510, a support plate 512 is arranged on the rotating shaft end of the first bevel gear 508, a fourth bevel gear 513 is fixedly arranged on the support plate 512 near the top end, and the fourth bevel gear 513 is engaged with the third bevel gear 511, the supporting plate 512 is connected with the connecting column 510 through a fifth connecting plate 514, the front end of the fourth bevel gear 513 is provided with a second fixing column 515, the front end of the second fixing column 515 is provided with a display plate 516, the tail end of the fourth bevel gear 513 is provided with a U-shaped column 517, the tail end of the U-shaped column 517 is provided with two rotating wheels 518, the back plate 502 is further provided with an annular detour 519, the two rotating wheels 518 are respectively matched with the inner side and the outer side of the annular detour 519, the display plate 516 can be provided with some lamplight display works, through the meshing of the third gear 504 and the fourth gear 507, and the mutual matching of the various bevel gears, while display board 516 may be rotated along circular detour 519 on back plate 502, and the same stable state is kept all the time, so that the attractiveness of the lamplight display works can be increased during display, and the lamplight works can be prevented from being changed in position during rotation to influence the viewing experience of a browser.

As shown in fig. 7, the sealing mechanism 7 includes a sliding block 701, sliding lugs 702 are disposed on two sides of the sliding block 701, the sliding lugs 702 are movably connected with two sides of an inner wall of the accommodating groove 6, two first slots 703 are symmetrically disposed on the sliding block 701, rotating blocks 704 are movably disposed in the first slots 703, sealing doors 705 are connected to the two rotating blocks 704, sealing strips 706 are disposed around the sealing doors 705, a second slot 707 is disposed in a middle position of each sealing door 705, a rotating hand 708 is rotatably connected to the second slot 707, the sliding block 701 slides in the accommodating groove 6 through the sliding lugs 702, the sealing doors 705 can be accommodated without occupying a space, when exhibition is not needed, the sealing doors 705 can be pulled out through the rotating hand 708 to cover the sealing doors on the cavity 2, the mechanism 705 in the cavity 2 is protected, dust falling is prevented, and the service life is prolonged.

When in use, as shown in fig. 1-7, the sealing door 705 is pulled by the rotating handle 708 to make the sealing door 705 and the sliding block 701 in the same horizontal plane, then the sealing door 705 and the sliding block 701 are received in the receiving slot 6 together by the sliding of the sliding hanging lug 702, then the light display work is placed on the display board 516 on the upper stage of the adjusting mechanism 5, the lifting mechanism 3 is controlled by the external controller to lift, the first driving motor 317 rotates to drive the threaded post 316 and the receiving board 313 to move, while moving, the first rack 311 and the second rack 312 move, and through their engagement with the first gear 303 and the second gear 307, the first connecting plate 304 and the third connecting plate 308 are driven to move, through their engagement with the second connecting plate 305 and the fourth connecting plate 309, respectively, and the telescopic limiting post 319 drives the first mounting plate 310 to lift, thereby lifting the whole mechanism, after lifting, the height of the rotary mounting disc 407 can be adjusted by the electric control telescopic rod 405 according to requirements, the second driving motor 404 is used for setting the rotating speed to drive works to slowly rotate, meanwhile, the rotating speed of the third driving motor 505 is set, the third driving motor 505 is used for driving the third gear 504 to rotate, the support plate 512 and the connecting column 510 are driven to rotate due to the cooperation with the fourth gear 507, the display plate 516 is driven to circularly rotate through the cooperation of the rotating wheel 518 and the annular detour 519, the support plate 512 is connected with the connecting column 510 through the fifth connecting plate 514, the second bevel gear 509 and the third bevel gear 511 are driven to respectively rotate around the first bevel gear 508 and the fourth bevel gear 513, thus, the display plate 516 is always in a fixed state when annular motion occurs, thereby ensuring the stability of the works displayed by light on the display plate 516, convenient observation, the maximize demonstrates the work.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. The automatic light display adjusting device for exhibition and display comprises a display stand (1) and is characterized in that a cavity (2) is arranged in the display stand (1), a lifting mechanism (3) used for adjusting the height is arranged in the cavity (2), a rotating mechanism (4) used for rotating is arranged at the top end of the lifting mechanism (3), an adjusting mechanism (5) used for adjusting the position of a light work is arranged at the top end of the rotating mechanism (4), a containing groove (6) is arranged at the side end of the cavity (2), and a sealing mechanism (7) is connected in the containing groove (6) in a sliding mode;

The lifting mechanism (3) comprises a bottom plate (301) connected with the bottom of the cavity (2), two first mounting columns (302) are symmetrically arranged on the bottom plate (301), a first gear (303) is rotatably connected to the inner sides of the first mounting columns (302), a first connecting plate (304) is fixedly arranged at the rotating shaft end of the first gear (303), a second connecting plate (305) is movably connected to the first connecting plate (304), two second mounting columns (306) are arranged at the side edges of the first mounting columns (302), a second gear (307) is rotatably connected to the inner sides of the second mounting columns (306), a third connecting plate (308) is fixedly arranged at the rotating shaft end of the second gear (307), a fourth connecting plate (309) is movably connected to the third connecting plate (308), and a first mounting plate (310) is movably connected to the top ends of the second connecting plate (305) and the fourth connecting plate (309), the rotating mechanism (4) is positioned on the first mounting plate (310), the first gear (303) is engaged with a first rack (311), a second rack (312) is meshed on the second gear (307), a bearing plate (313) is connected between the first rack (311) and the second rack (312), a limiting piece (314) is arranged between the first mounting column (302) and the second mounting column (306), the limiting piece (314) is connected with the second rack (312) in a sliding way, an installation platform (315) is arranged between the two first installation columns (302), the mounting table (315) is rotatably connected with a threaded column (316), the threaded column (316) is rotatably connected with the bearing plate (313), one end of the threaded column (316) is provided with a first driving motor (317), the other end of the threaded column (316) is provided with a baffle plate (318), a telescopic limit column (319) is connected between the bottom plates (301) of the first mounting plate (310);

The adjusting mechanism (5) comprises a third mounting plate (501) connected with the rotating mechanism (4), a back plate (502) is erected on the third mounting plate (501), a third gear (504) is connected to the middle position of the back plate (502) through a rotating shaft (503), a third driving motor (505) is connected to the other end of the rotating shaft (503), a first fixing column (506) is arranged above the rotating shaft (503), a fourth gear (507) is rotatably connected to the outer wall of the first fixing column (506), the fourth gear (507) is meshed with the third gear (504), a first conical gear (508) is fixedly arranged at the top end of the first fixing column (506), a second conical gear (509) is meshed with the first conical gear (508), a connecting column (510) is arranged on the second conical gear (509), and a third conical gear (511) is arranged at the top end of the connecting column (510), the rotating shaft end of the first bevel gear (508) is provided with a supporting plate (512), a fourth bevel gear (513) is fixedly arranged on the supporting plate (512) close to the top end, the fourth bevel gear (513) is meshed with the third bevel gear (511), the supporting plate (512) is connected with the connecting column (510) through a fifth connecting plate (514), the front end of the fourth bevel gear (513) is provided with a second fixing column (515), the front end of the second fixing column (515) is provided with a display plate (516), the tail end of the fourth bevel gear (513) is provided with a U-shaped column (517), the tail end of the U-shaped column (517) is provided with two rotating wheels (518), the back plate (502) is further provided with an annular winding (519), and the two rotating wheels (518) are respectively matched with the inner side and the outer side of the annular winding (519).

2. The automatic adjusting device for light display for exhibition and display as claimed in claim 1, wherein the rotating mechanism (4) comprises a second mounting plate (401) connected with the lifting mechanism (3), a rotating hole (402) is formed in the middle position of the second mounting plate (401), a rotating column (403) is arranged in the rotating hole (402), a second driving motor (404) is arranged at the bottom end of the rotating column (403), an electric control telescopic rod (405) is arranged on the middle position of the top end of the rotating column (403), telescopic adjusting rods (406) are symmetrically arranged on two sides of the electric control telescopic rod (405), rotating mounting plates (407) are arranged on the top ends of the telescopic adjusting rods (406) and the electric control telescopic rod (405), and the adjusting mechanism (5) is located on the rotating mounting plates (407).

3. The automatic light display adjusting device for exhibition and display as claimed in claim 1, wherein the sealing mechanism (7) comprises a sliding block (701), sliding lugs (702) are arranged on two sides of the sliding block (701), the sliding lugs (702) are movably connected with two sides of the inner wall of the accommodating groove (6), two first open grooves (703) are symmetrically arranged on the sliding block (701), rotating blocks (704) are movably arranged in the first open grooves (703), sealing doors (705) are connected on the two rotating blocks (704), sealing strips (706) are arranged around the sealing doors (705), a second open groove (707) is arranged in the middle of the sealing doors (705), and a rotating handle (708) is rotatably connected in the second open groove (707).