CN217959196U - Rostrum - Google Patents

Abstract

The utility model relates to a podium belongs to the technical field of chair table equipment, its include the base with slide set up in the lift seat of base top, set up threaded hole on the base, it is provided with the dwang and is used for the drive to rotate on the lift seat dwang pivoted rotation actuating mechanism, the vertical setting of dwang, the dwang is worn to locate the screw hole, the dwang with base threaded connection, it is right still to be provided with on the lift seat the spacing subassembly of dwang axial spacing axial. The application has the effect that the podium can be suitable for the podium with no need of height.

Description

Rostrum

Technical Field

The application relates to the technical field of chair table equipment, in particular to a podium.

Background

At present, a lecture table is usually arranged in a conference, a classroom or other formal occasions, and auxiliary lecture tools such as a computer or lecture manuscripts and the like are placed on the lecture table, so that the lecturer can conveniently perform lecture or lecture work.

The inventor thinks that because of different heights of different speakers, some speakers are inconvenient to use the lecture tools such as a computer on the lecture table when using the lecture table.

SUMMERY OF THE UTILITY MODEL

In order to make the podium can be applicable to the lecturer of different heights, this application provides a podium.

The application provides a podium adopts following technical scheme:

the utility model provides a podium, include the base with slide set up in the lift seat of base top, set up threaded hole on the base, it is provided with the dwang and is used for the drive to rotate on the lift seat dwang pivoted rotates actuating mechanism, the vertical setting of dwang, the dwang is worn to locate the screw hole, the dwang with base threaded connection, it is right still to be provided with on the lift seat be used for the spacing subassembly of dwang axial.

Through adopting above-mentioned technical scheme, rotate through rotating actuating mechanism drive dwang, because dwang and base threaded connection, so the dwang can move in vertical direction this moment, under the limiting displacement of the spacing subassembly of axial, the dwang only takes place relative rotation with the seat that goes up and down, does not take place the relative sliding motion along vertical direction to make the dwang can drive the seat that goes up and down and move in vertical direction, and then carry out altitude mixture control to the podium, make the podium can be applicable to the lecturer of not co-altitude.

Optionally, the rotation driving mechanism includes reversing gear and is used for the drive reversing gear pivoted rotates the motor, the reversing gear cover is established on the dwang and with the dwang synchronous rotation.

Through adopting above-mentioned technical scheme, through setting up reversing gear, make to rotate the indirect dwang rotation that drives of motor to the output shaft that rotates the motor can be in non-vertical device, for example: and in a horizontal state, the position of the rotating motor can be adjusted through the reversing gear, so that the integral structure of the rotating driving mechanism is more compact.

Optionally, the rotating gear is provided with a lengthening sleeve for the rotating rod to penetrate, and the lengthening sleeve and the rotating rod rotate synchronously.

Through adopting above-mentioned technical scheme, through setting up extension sleeve, increased the area of contact between reversing gear and the dwang, under the condition of applying the same moment of torsion to the dwang, reduced the pressure between reversing gear and the dwang to the friction loss between dwang and the reversing gear has been reduced. Make the reversing gear can drive the dwang better and rotate simultaneously.

Optionally, the outside cover of dwang is equipped with the lag, the lag is worn to locate the extension sleeve, the lag the extension sleeve and the dwang rotates in step.

By adopting the technical scheme, because the reversing gear is generally quenched, the hardness is higher, and the reversing gear indirectly transmits the rotating rod by arranging the protective sleeve, so that the friction loss between the reversing gear and the rotating rod is reduced, and the rotating rod is protected.

Optionally, the bottom of lag is provided with the butt ring, the top lateral wall of butt ring with the bottom looks butt of extension sleeve, the dwang have with the butt wall, the butt wall with the bottom lateral wall butt of butt ring.

Through adopting above-mentioned technical scheme, through extension sleeve and butt wall centre gripping butt ring to it is spacing to carry out the axial to the lag, so that the lag is difficult for moving in vertical direction.

Optionally, be provided with the installation shell on the lift seat, be provided with grip ring and lower grip ring in the installation shell, go up the grip ring with the grip ring is all established down on the dwang, go up the grip ring with reversing gear's up end looks butt, down the grip ring with reversing gear's lower terminal surface looks butt.

Through adopting above-mentioned technical scheme, carry out the centre gripping through last grip ring and lower grip ring to the reversing gear, make the reversing gear be difficult for following vertical direction and slide to make the position of reversing gear more stable.

Optionally, a supporting wall abutting against the bottom of the lower clamping ring is arranged on the installation shell, a cover body abutting against the top side wall of the upper clamping ring is arranged at the top of the installation shell, and the cover body is detachably connected with the installation shell.

Through adopting above-mentioned technical scheme, can dismantle with the installation shell through the lid and be connected, conveniently extrude the location to last grip ring, make and go up the grip ring and can better centre gripping reversing gear with lower grip ring.

Optionally, the spacing subassembly of axial for fixed set up in spacing ring in the installation shell, the dwang rotates and wears to locate the spacing ring, the dwang have with the last spacing wall of the top looks butt of spacing ring and with the lower spacing wall of the bottom looks butt of spacing ring.

Through adopting above-mentioned technical scheme, carry on spacingly through the spacing ring to the dwang, make the dwang be difficult for producing along the ascending mutual displacement of vertical side with spacing ring and installation shell to make the dwang can drive the seat synchronous motion in vertical side.

Optionally, the top of spacing ring is provided with the butt gasket, the butt gasket has the confession the dwang rotates the hole of wearing to establish, the top of butt gasket with the last limiting wall looks butt of dwang.

Through adopting above-mentioned technical scheme, through setting up the butt gasket, reduce the last spacing wall of dwang and the friction loss between the spacing ring to improve the life of spacing ring.

Optionally, a multimedia console is arranged on the top of the lifting seat.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the height of the podium is adjusted by the sliding connection between the lifting seat and the base, so that the podium can be suitable for the lecturers with different heights;

2. the reversing gear is arranged, so that the position of the rotating motor can be adjusted, and the structure of the rotating driving mechanism is more compact;

3. through setting up extension sleeve and lag, reduced the friction loss of switching-over gear to the dwang.

Drawings

Fig. 1 is a schematic overall structure diagram of a podium according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a placing table, an installation box, a sliding rod, a sliding barrel and a bottom plate according to an embodiment of the application.

Fig. 3 is an installation case of the embodiment of the present application. The cross-sectional view of slide bar and slide section of thick bamboo.

Fig. 4 is a schematic structural diagram of the installation box, the rotating motor and the reversing gear according to the embodiment of the application.

Fig. 5 is an exploded schematic view of the upper housing, lower housing, and reversing gear of an embodiment of the present application.

Fig. 6 is an enlarged view of a portion a in fig. 3.

Description of the reference numerals: 1. a base; 11. a base plate; 12. a base table; 13. a guide cylinder; 14. a guide bar; 15. a threaded hole; 2. a lifting seat; 21. a placing table; 22. a sliding barrel; 23. installing a box; 24. a slide bar; 25. rotating the rod; 251. abutting the bump; 252. a lower limit wall; 253. a groove is embedded; 26. a controller; 27. a protective sleeve; 271. a butting ring; 3. a rotation driving mechanism; 31. rotating the motor; 311. a spiral protrusion; 32. a reversing gear; 321. lengthening the sleeve; 4. mounting a shell; 41. an upper housing; 411. an upper through hole; 412. a set screw; 413. a fixing ring; 414. a support wall; 415. fixing grooves; 416. an upper mounting hole; 42. a lower housing; 421. a lower through hole; 422. a set screw; 423. a lower mounting hole; 43. an upper clamping ring; 44. a lower clamping ring; 45. a cover body; 451. a compression screw; 46. a limiting ring; 47. a limiting groove; 48. abutting the gasket; 481. perforating holes; 482. a communication port.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a podium.

Referring to fig. 1, the podium includes base 1 and sets up in the lift seat 2 of base 1 top, and base 1 includes bottom plate 11 and welded fastening at bottom plate 11 top and the base 12 of vertical setting, and lift seat 2 is including being used for placing the platform 21 and the section of thick bamboo 22 that slides of a body coupling in placing platform 21 bottom of placing articles such as computer or lecture drafts, and the section of thick bamboo 22 that slides is cuboid and hollow setting, and the section of thick bamboo 22 that slides is located the top of base 12 and follows vertical direction slip cover and establish on base 12.

Referring to fig. 1, the sliding barrel 22 is slidably sleeved on the bottom table 12, so that the height of the placing table 21 can be adjusted, and the podium can be suitable for lecturers with different heights.

Referring to fig. 1, the top of placing table 21 is provided with multimedia console 211, multimedia console 211 adopts wireless communication setting, and the speaker can be through pressing the touch-sensitive screen of operation multimedia console 211 to work such as surfing the net, and multimedia console 211 is used for being connected with intelligent display panel electricity, so that the content of multimedia console 211 can be shown to the intelligent display panel, thereby make things convenient for the speaker to convey the content that will express for the audience through picture or video mode and through intelligent display panel.

Referring to fig. 2, the bottom of the placing table 21 is fixedly connected with an installation box 23 through screws, the bottom of the installation box 23 is integrally connected with a sliding rod 24 which is arranged in a hollow manner, a guide cylinder 13 which is vertically arranged is welded and fixed on the bottom plate 11, and the sliding rod 24 slides and penetrates through the guide cylinder 13. The sliding movement of the sliding rod 24 is guided and limited through the guide cylinder 13, so that the sliding movement of the placing table 21 in the vertical direction is more stable.

Referring to fig. 2 and 3, a vertically disposed rotating rod 25 is disposed in the sliding rod 24, a guide rod 14 is disposed in the guide cylinder 13, the guide rod 14 is vertically disposed, and the bottom of the guide rod 14 is welded to the bottom plate 11. A threaded hole 15 is formed in the guide rod 14, and the rotating rod 25 penetrates through the threaded hole 15 and is in threaded connection with the guide rod 14. The connecting hole that supplies dwang 25 to rotate to wear to establish is seted up to the bottom of install bin 23 to make the top of dwang 25 wear to establish and get into install bin 23, be provided with in the install bin 23 and be used for driving dwang 25 pivoted rotation actuating mechanism 3, and be provided with in the install bin 23 and be used for carrying out the spacing subassembly of axial to dwang 25, so that dwang 25 and install bin 23 only take place relative rotation, do not take place along the ascending relative slip in vertical side.

Referring to fig. 2 and 3, since the rotating rod 25 is in threaded connection with the guide rod 14, when the rotation driving mechanism 3 drives the rotating rod 25 to rotate, the rotating rod 25 moves in the vertical direction, and under the limiting effect of the axial limiting component, the rotating rod 25 drives the installation box 23 to synchronously move in the vertical direction, and further drives the placing table 21 to move in the vertical direction.

Referring to fig. 4, the rotation driving mechanism 3 includes a rotation motor 31 and a reversing gear 32 disposed in the installation box 23, and the reversing gear 32 is sleeved on the top end of the rotation rod 25 and is used for driving the rotation rod 25 to rotate synchronously. The output shaft of the rotating motor 31 is horizontally arranged, the output shaft of the rotating motor 31 is fixedly welded with the spiral protrusion 311, the spiral protrusion 311 is embedded into the tooth groove of the reversing gear 32, and the reversing gear 32 is driven to rotate in a gear meshing mode. Thereby rotating the rotating rod 25.

Referring to fig. 4, in the present embodiment, the reversing gear 32 is a helical gear, that is: the teeth and tooth grooves of the reversing gear 32 are vertically and obliquely arranged, and the corresponding spiral protrusions 311 are also obliquely arranged. By arranging the reversing gear 32 as a helical gear, the output shaft of the rotating motor 31 can drive the reversing gear 32 to rotate. If the teeth and the tooth grooves of the reversing gear 32 are vertically arranged, even if the spiral protrusions 311 are rotatably inserted into the tooth grooves of the reversing gear 32, the spiral protrusions 311 cannot apply a tangential force to the reversing gear 32 to rotate the reversing gear 32, so that the reversing gear 32 cannot rotate.

The transmission mode of the reversing gear 32 and the rotating motor 31 is not limited to the mode of passing through the spiral protrusion 311, for example, in another embodiment, the reversing gear 32 may be a bevel gear, a driving gear engaged with the reversing gear 32 is welded and sleeved on the output shaft of the rotating motor 31, and the driving gear is also arranged in a bevel gear, and the axial direction of the driving gear is perpendicular to the axial direction of the reversing gear 32.

Referring to fig. 2 and 3, a controller 26 is mounted on the placing table 21, the controller 26 is electrically connected to the rotating motor 31, and the speaker can adjust the height of the placing table 21 by operating the controller 26 to control the rotating direction of the rotating motor 31 and thus the rotating direction of the rotating rod 25.

Referring to fig. 4 and 5, an installation case 4 for the rotating rod 25 to penetrate and for installing the fixed reversing gear 32 is provided in the installation case 23, the installation case 4 includes an upper case 41 and a lower case 42 fixedly connected to the upper case 41, an upper through hole 411 for the rotating rod 25 to penetrate is provided on the upper case 41, and a lower through hole 421 corresponding to the upper through hole 411 and for the rotating rod 25 to penetrate is provided on the lower case 42.

Referring to fig. 4 and 5, at least one fixing screw 422 is disposed on the lower housing 42, and the fixing screw 422 is inserted into the bottom of the installation box 23 and is in threaded connection with the installation box 23 to detachably connect the lower housing 42 and the installation box 23, in this embodiment, the number of the fixing screws 422 is preferably two. A positioning screw 412 is arranged on the upper shell 41 in a penetrating manner, and the positioning screw 412 is arranged on the rotating motor 31 in a penetrating manner and is in screw connection with the rotating motor 31, so that the rotating motor 31 is fixedly connected with the mounting shell 4. Because the mounting shell 4 is fixed in the mounting box 23 through the fixing screw 422, the positioning screw 412 indirectly fixes the rotating motor 31 in the mounting box 23, so that the output shaft of the rotating motor 31 is not easy to shake, and the output shaft of the rotating motor 31 can be better meshed with the reversing gear 32 for transmission.

Referring to fig. 5 and 6, the reversing gear 32 is disposed in the upper housing 41, and an upper retaining ring 43 abutting on a top end surface of the reversing gear 32 and a lower retaining ring 44 abutting on a bottom end surface of the reversing gear 32 are disposed in the upper housing 41. The reversing gear 32 is held by the upper and lower holding rings 43 and 44, so that the reversing gear 32 is not easily shaken in the vertical direction. The top end of the rotating rod 25 passes through the lower through hole 421 and then sequentially passes through the lower clamp ring 44, the reversing gear 32 and the upper clamp ring 43.

Referring to fig. 4 and 5, the radii of the upper clamping ring 43 and the lower clamping ring 44 are smaller than the radius of the reversing gear 32, so that the output shaft of the rotating motor 31 is not easy to interfere with the upper clamping ring 43 and the lower clamping ring 44 during the process of meshing transmission of the output shaft of the rotating motor 31 and the reversing gear 32.

Referring to fig. 4 and 5, a fixing ring 413 is integrally connected to a bottom of the upper housing 41, the bottom of the upper housing 41 has a support wall 414 abutting against a bottom of the lower clamp ring 44, the support wall 414 and the fixing ring 413 define a fixing groove 415 on which the lower clamp ring 44 is placed, and the fixing groove 415 is communicated with the upper through hole 411. The top of the upper housing 41 is covered with a cover 45 abutting against the top of the upper clamping ring 43, a compression screw 451 penetrates through the cover 45, the compression screw 451 penetrates through the upper housing 41 and is in threaded connection with the upper housing 41, so that the cover 45 is pressed on the upper clamping ring 43 to limit the upper clamping ring 43.

Referring to fig. 5 and 6, further, an extension sleeve 321 for the rotating rod 25 to penetrate through is integrally connected to the inner ring of the reversing gear 32, and both the upper clamping ring 43 and the lower clamping ring 44 are sleeved on the extension sleeve 321. By providing the extension sleeve 321, the contact area between the reversing gear 32 and the rotating rod 25 is increased, so that the reversing gear 32 can better drive the rotating rod 25 to rotate.

Referring to fig. 5 and 6, a protecting cover 27 that rotates synchronously with the rotating lever 25 and is disposed in a cylindrical shape is further fitted over the top end of the rotating lever 25, and the protecting cover 27 is inserted into the elongated sleeve 321 and rotates synchronously with the reversing gear 32. By providing the protection cover 27, the rotating lever 25 is protected to prolong the service life of the rotating lever 25. The shapes of the inner cavity of the elongated sleeve 321, the circumferential outer side wall of the protection cover 27, the inner side wall of the protection cover 27 and the portion of the rotating rod 25 penetrating through the protection cover 27 are all non-cylindrical, so that the elongated sleeve 321, the protection cover 27 and the rotating rod 25 can synchronously rotate, and in this embodiment, the shapes of the inner cavity of the elongated sleeve 321, the circumferential outer side wall of the protection cover 27, the inner side wall of the protection cover 27 and the portion of the rotating rod 25 penetrating through the protection cover 27 are preferably regular hexagonal prism-shaped.

Referring to fig. 5 and 6, an abutment ring 271 through which the rotating lever 25 is inserted is integrally connected to the bottom of the protection cover 27, and a top side wall of the abutment ring 271 is in abutment with a bottom side wall of the extension sleeve 321. An abutting projection 251 is integrally connected to a circumferential side wall of the rotating lever 25, and an abutting wall abutting against a bottom side wall of the abutting ring 271 is provided at the top of the abutting projection 251. The positioning of the protective sleeve 27 is realized by limiting the abutting ring 271 by the abutting wall and the lengthened sleeve 321, so that the protective sleeve 27 is not easy to move in the vertical direction.

Referring to fig. 5 and 6, the axial limiting component is a limiting ring 46 fixedly disposed in the mounting housing 4, the rotating rod 25 rotates to penetrate through the limiting ring 46, and the radius of the portion of the rotating rod 25 protruding below the limiting ring 46 is greater than the radius of the portion of the rotating rod 25 penetrating through the limiting ring 46, so that the rotating rod 25 has a lower limiting wall 252 abutting against the bottom side wall of the limiting ring 46. Meanwhile, the rotating rod 25 is provided with an upper limiting wall abutting against the top side wall of the limiting ring 46. Through last spacing wall and the spacing ring 46 of lower spacing wall 252 centre gripping, carry out the axial spacing to dwang 25 to make dwang 25 can with installation shell 4 and install bin 23 synchronous motion in the vertical direction.

Referring to fig. 5 and 6, further, in order to facilitate installation and positioning of the limiting ring 46, the upper housing 41 and the lower housing 42 are commonly provided with a limiting groove 47 in which the limiting ring 46 is embedded and communicated with the lower through hole 421, and the bottom of the upper housing 41 abuts against the top side wall of the limiting ring 46, so that the limiting ring 46 is pressed in the limiting groove 47.

Referring to fig. 5 and 6, in order to conveniently place the limiting ring 46 in the limiting groove 47, the upper housing 41 and the lower housing 42 are detachably connected in the following specific connection manner: lower casing 42 is provided with lower mounting hole 423, upper casing 41 is provided with upper mounting hole 416 corresponding to lower mounting hole 423, and upper casing 41 and lower casing 42 are detachably connected by sequentially passing screws through upper mounting hole 416 and lower mounting hole 423. In this embodiment, the number of the upper mounting holes 416 and the lower mounting holes 423 are preferably two, and the upper mounting holes 416 are preferably stepped through holes so that the nut portions of the screws can be hidden in the upper mounting holes 416.

Referring to fig. 5 and 6, further, an abutting gasket 48 is disposed on the top of the limiting ring 46, wherein the abutting gasket 48 is preferably disposed in a ring shape, and a penetrating hole 481 for the rotating rod 25 to penetrate is formed on the abutting gasket 48. Set up the embedded groove 253 that supplies the inner circle embedding of butt gasket 48 on the circumference lateral wall of dwang 25, at this moment, the last spacing wall of dwang 25 is the top cell wall of embedded groove 253, and the last spacing wall of dwang 25 and the top looks butt of butt gasket 48. Through setting up butt gasket 48, reduce the friction loss between the upper limit wall of dwang 25 and the spacing ring 46 top to improve the life of spacing ring 46.

In order to facilitate the abutting gasket 48 to be sleeved on the rotating rod 25, the circumferential outer side wall of the abutting gasket 48 is provided with a communication opening 482 communicated with the through hole 481. The contact spacer 48 can be deformed to a certain extent through the communication opening 482 so that the pivot lever 25 can enter the through hole 481 through the communication opening 482.

The implementation principle of the podium in the embodiment of the application is as follows: when the rotating rod 25 is installed, the rotating rod 25 is firstly inserted into the threaded hole 15, and the top end of the rotating rod 25 is sequentially inserted into the bottom of the installation box 23, the lower through hole 421 of the lower shell 42, the limiting ring 46 and the abutting gasket 48; then the protecting sleeve 27 is sleeved on the top end of the rotating rod 25, the lower clamping ring 44, the reversing gear 32 and the upper clamping ring 43 are sequentially sleeved on the protecting sleeve 27, and then the cover body 45 is pressed on the upper clamping ring 43 through the compression screw 451; the lower case 42 and the upper case 41 are fixed by screws, the mounting case 4 is mounted on the mounting case 23 by fixing screws 422, then the spiral protrusion 311 on the output shaft of the rotating motor 31 is engaged with the reversing gear 32, and finally the rotating motor 31 is fixed by the set screw 412.

When the height of the lecture table is adjusted, the rotation direction of the output shaft of the rotating motor 31 is controlled by operating the controller 26, and then the rotation direction of the rotating rod 25 is controlled by the reversing gear 32, and under the action of the limiting ring 46, the rotating rod 25 and the mounting shell 4 only rotate correspondingly without relative movement, so that the rotating rod 25 can drive the mounting shell 4 to move in the vertical direction, and further the height of the placing table 21 is adjusted.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. A podium, comprising: including base (1) with slide set up in the lift seat (2) of base (1) top, set up threaded hole (15) on base (1), it is provided with dwang (25) and is used for the drive to rotate on lift seat (2) dwang (25) pivoted rotation actuating mechanism (3), dwang (25) vertical setting, dwang (25) are worn to locate screw hole (15), dwang (25) with base (1) threaded connection, it is right still to be provided with on lift seat (2) dwang (25) axial spacing subassembly.

2. A podium according to claim 1, wherein: rotate actuating mechanism (3) and include reversing gear (32) and be used for the drive reversing gear (32) pivoted rotates motor (31), reversing gear (32) cover is established on dwang (25) and with dwang (25) synchronous rotation.

3. A podium according to claim 2, wherein: the reversing gear (32) is provided with a supply the lengthening sleeve (321) penetrated by the rotating rod (25), and the lengthening sleeve (321) and the rotating rod (25) rotate synchronously.

4. A podium according to claim 3, wherein: the outside cover of dwang (25) is equipped with lag (27), lag (27) are worn to locate extension sleeve (321), lag (27) extension sleeve (321) and dwang (25) synchronous rotation.

5. A podium according to claim 4, wherein: the bottom of lag (27) is provided with butt ring (271), the top lateral wall of butt ring (271) with the bottom looks butt of extension sleeve (321), dwang (25) have the butt wall, the butt wall with the bottom lateral wall butt of butt ring (271).

6. A podium according to claim 2, wherein: be provided with installation shell (4) on lift seat (2), be provided with in installation shell (4) and go up grip ring (43) and lower grip ring (44), go up grip ring (43) with grip ring (44) all overlap down and establish on dwang (25), go up grip ring (43) with the up end looks butt of reversing gear (32), down grip ring (44) with the lower terminal surface looks butt of reversing gear (32).

7. A podium according to claim 6, wherein: the mounting shell (4) is provided with a supporting wall (414) abutted to the bottom of the lower clamping ring (44), the top of the mounting shell (4) is provided with a cover body (45) abutted to the top side wall of the upper clamping ring (43), and the cover body (45) is detachably connected with the mounting shell (4).

8. A podium according to claim 7, wherein: axial spacing subassembly for fixed set up in just supply in installation shell (4) dwang (25) rotate spacing ring (46) of wearing to establish, dwang (25) have with the last spacing wall of the top looks butt of spacing ring (46) and with spacing wall (252) down of the bottom looks butt of spacing ring (46).

9. A podium according to claim 8, wherein: the top of spacing ring (46) is provided with butt gasket (48), butt gasket (48) have the confession dwang (25) rotate the perforation (481) of wearing to establish, the top of butt gasket (48) with the last spacing wall looks butt of dwang (25).

10. A podium according to claim 1, wherein: the top of the lifting seat (2) is provided with a multimedia operating platform.

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