CN112515333A

CN112515333A - Conference table capable of adjusting area and inclination angle of table top

Info

Publication number: CN112515333A
Application number: CN202011408266.1A
Authority: CN
Inventors: 徐玲玲; 冯香君; 孙啸雷; 熊靖
Original assignee: Yancheng Yanxi Happy Industry Development Co ltd
Current assignee: Yancheng Yanxi Happy Industry Development Co ltd
Priority date: 2020-12-05
Filing date: 2020-12-05
Publication date: 2021-03-19
Anticipated expiration: 2040-12-05
Also published as: CN112515333B

Abstract

The invention discloses a conference table capable of adjusting the area and the inclination angle of a table top, and relates to the technical field of office supplies. The invention has the advantages that the extrusion block, the limiting block and the positioning groove are arranged, the effect of freely adjusting the desktop is achieved, the size of the area can be freely adjusted according to the requirement, the operation is simple, the use is convenient, the situation that more temporary attendees cause crowding of the conference desk is avoided, the effect of freely adjusting the inclination angle of the desktop is achieved by arranging the displacement slip ring, the connecting ring and the sleeve, the situation that the desktop is inclined, articles on the desktop slide down is avoided, and the using effect of the device is good.

Description

Conference table capable of adjusting area and inclination angle of table top

Technical Field

The invention relates to the technical field of office supplies, in particular to a conference table with adjustable table top area and table top inclination angle.

Background

Conference table is common modern office supplies, generally chooses for use the wood to spray paint, and the veneer is done to imported cherry wood skin, adopts the environmental protection substrate, and the high-grade polyester paint of import PU class, the high-quality hardware of import all need purchase to be used for handling official business, and along with the improvement of standard of living, more and more companies pay attention to its practicality and convenience when the shopping conference table.

The area of traditional conference table can not be adjusted, and its result of use is not good, and when the personnel that need attend the meeting temporarily were more, the conference table will seem more crowded, and this uses inconvenient personnel, leads to partly personnel to go into to sit smoothly, and simultaneously, the desktop inclination of conference table also can not be adjusted, when the meeting place in uneven place, can cause the desktop slope, makes the landing appear to the article on the desktop.

Disclosure of Invention

The invention aims to provide a conference table with an adjustable table top area and an adjustable table top inclination angle, so as to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: a conference table capable of adjusting the area and the inclination angle of a table top comprises a main body, wherein both sides of the top of the main body are movably connected with a table plate, a transmission mechanism is arranged in the main body, an area adjusting mechanism is arranged below the table plate at the top of the main body, an inclination angle adjusting mechanism is arranged at the bottom of the main body, the transmission mechanism comprises racks fixedly connected with both sides of the bottom of the table plate, both sides of the inner wall of the main body are horizontally provided with a first transmission shaft in rotating connection, both sides of the outer wall of the first transmission shaft are fixedly connected with transmission gears which are meshed with adjacent racks, both sides of the inner wall of the main body are horizontally provided with double-thread screw rods in rotating connection between the two first transmission shafts, both ends of the double-thread screw rods are fixedly connected with second bevel gears, both sides of the outer wall of the first, the first bevel gear is meshed with an adjacent second bevel gear, two lead screw nuts are movably sleeved on the outer wall of the double-thread lead screw, a limiting plate matched with the lead screw nuts is fixedly connected to the bottom of the inner wall of the main body, the area adjusting mechanism comprises a top pressing block fixedly connected with the tops of the lead screw nuts, the top pressing block is in a right trapezoid shape, a plurality of filling plates are movably connected to the top of the main body, an extrusion block matched with the top pressing block is fixedly connected to the bottom of each filling plate, limiting blocks are fixedly connected to two sides of each extrusion block, locking plates are movably connected to the top of each limiting plate and two sides of each extrusion block, compression springs are fixedly connected to the sides, away from the extrusion blocks, of the locking plates, away from the outer walls of the extrusion blocks, guide chutes matched with the limiting blocks are arranged on the sides, close to the outer walls of the extrusion blocks, and, the lead screw nut is close to the first halfpace of outer wall one side fixedly connected with of locking board, outer wall one side fixedly connected with and first halfpace assorted second halfpace of locking board.

Furthermore, the top of limiting plate is equipped with the first spout that matches with the locking plate, and during the use, the locking plate slides from side to side in first spout under the drive of second halfpace, and it plays spacing and guide locking plate motion's effect.

Furthermore, the top of limiting plate is equipped with screw-nut assorted second spout, during the use, screw-nut moves in the second spout under the drive of two screw lead screws, and it plays the effect that supplementary two screw lead screws made screw-nut steady motion.

Further, the top of main part be equipped with the spacing spout of table assorted, during the use, the table carries out the horizontal slip along spacing spout, plays spacing table and improves its motion stability's effect.

Furthermore, the top of the main body is provided with a movable groove matched with the filling plate, and when the filling plate is used, the filling plate is jacked up in the movable groove under the driving of the extrusion block, so that the filling plate is placed.

Further, the bottom of mending board is in main part outer wall both sides fixedly connected with limiting plate, and during the use, the mending board drives the limiting plate and slides in the main part outer wall, plays spacing mending board, avoids it to appear moving about the effect.

Furthermore, the inclination angle adjusting mechanism comprises supporting tables fixedly connected with four corners of the bottom of the main body, the bottom of the supporting platform is hinged with a connecting column, the bottom of the connecting column is rotatably connected with a sleeve, a second screw rod nut is fixedly connected to one side of the inner wall of the sleeve, which is far away from the connecting column, the inner side of the second screw rod nut is movably connected with an extension screw rod, the bottom of the extension screw rod extends to the outer side of the sleeve and is fixedly connected with a support column, one side of the sleeve, which is close to the outer wall of the connecting column, is fixedly connected with a connecting ring, the top of the connecting ring is fixedly connected with a plurality of sliding rods, the outer walls of the adjacent sliding rods are movably sleeved with the same displacement sliding ring, the bottom of the displacement slip ring is fixedly connected with a reset spring outside the sliding rod, the top of the displacement slip ring extends to the inner side of the connecting column and is fixedly connected with a plurality of locking blocks, and two adjacent supporting columns are fixedly connected with a connecting rod.

Furthermore, the inner side of the connecting column is provided with a locking groove matched with the locking block, and when the locking device is used, the locking block is kept attached to the locking groove under the driving of the displacement slip ring, so that the locking sleeve is used for preventing the locking sleeve from rotating automatically.

Further, telescopic inner wall fixedly connected with and spliced pole assorted rolling bearing, during the use, the sleeve passes through rolling bearing and spliced pole to rotate and is connected, and it has improved the stability of device motion.

Compared with the prior art, the invention has the following beneficial effects:

1. the conference table capable of adjusting the area and the inclination angle of the table top is characterized in that the top pressing block is arranged, the top pressing block is contacted with the extrusion block, the extrusion block is jacked up, the extrusion block drives the filling plate to move, the limiting block is aligned with the positioning groove, the limiting block extends into the positioning groove under the action of the pressing spring, the filling plate is clamped tightly, and by arranging a plurality of groups of filling plates, the area can be increased at will, the screw nut drives the first step to contact with the second step, then the second step is pushed, the second step drives the locking plate to move, the limiting block is separated from the positioning groove, the filling plate loses the limiting, falls into the lower part under the action of gravity, the filling plates fall down one by one along with the closing of the screw rod nut, and the arrangement of the structure plays a role of freely adjusting the table top, the size of the area can be freely adjusted according to the requirement, the operation is simple, the use is convenient, and the condition that more personnel participating in the conference temporarily cause the conference table to be crowded is avoided.

2. This conference table at adjustable desktop area and desktop inclination, through promoting the displacement sliding ring, the displacement sliding ring drives the latch segment motion, the latch segment loosens the spacing to the displacement sliding ring, rotate the go-between, the go-between drives the sleeve and rotates, the sleeve drives second screw-nut and rotates, then second screw-nut passes through the sleeve and drives the spliced pole and rise, the extension has just been accomplished to this support column this moment, can make conference table keep the stable placing of level, the effect at freely adjusting the desktop inclination has been played through the structure more than setting up, avoid opening the meeting place when uneven place, the desktop takes place to incline, the condition that the landing appears to article on the messenger's desktop takes place, device excellent in use effect.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a front sectional view of the present invention;

FIG. 2 is an enlarged schematic view of the invention at A in FIG. 1;

FIG. 3 is an enlarged schematic view of the invention at B of FIG. 1;

FIG. 4 is a side sectional view of a portion of the present invention;

FIG. 5 is a schematic view of the positioning groove of the present invention;

fig. 6 is a schematic structural view of a first landing of the present invention;

fig. 7 is a front sectional view of the invention after deployment.

In the figure: 1. a main body; 2. a table plate; 3. a transmission mechanism; 4. an area adjusting mechanism; 5. an inclination angle adjusting mechanism; 6. a rack; 7. a first drive shaft; 8. a transmission gear; 9. a first bevel gear; 10. a second bevel gear; 11. a double-threaded screw rod; 12. a feed screw nut; 13. a limiting plate; 14. pressing the block; 15. filling up the board; 16. extruding the block; 17. a limiting block; 18. a locking plate; 19. a compression spring; 20. a guide chute; 21. a positioning groove; 22. a first landing; 23. a second landing; 24. a support table; 25. connecting columns; 26. a sleeve; 27. a second feed screw nut; 28. stretching the screw rod; 29. a support pillar; 30. a connecting ring; 31. a slide bar; 32. a return spring; 33. a displacement slip ring; 34. a locking block; 35. a connecting rod.

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.

As shown in fig. 1-2 and 4-7, the conference table capable of adjusting the area and the inclination angle of the table top comprises a main body 1, wherein table plates 2 are movably connected to both sides of the top of the main body 1, a transmission mechanism 3 is arranged inside the main body 1, an area adjusting mechanism 4 is arranged below the table plates 2 at the top of the main body 1, an inclination angle adjusting mechanism 5 is arranged at the bottom of the main body 1, the transmission mechanism 3 comprises racks 6 fixedly connected to both sides of the bottom of the table plates 2, first transmission shafts 7 rotatably connected to both sides of the inner wall of the main body 1 are horizontally arranged on both sides of the inner wall of the main body 1, transmission gears 8 are fixedly connected to both sides of the outer wall of the first transmission shafts 7, the transmission gears 8 are meshed with the adjacent racks 6, double-threaded screw rods 11 rotatably connected to both sides of the inner wall of the main body 1 are horizontally arranged between the two first transmission shafts 7, second, the area adjusting mechanism comprises an area adjusting mechanism 4, two pressing blocks 14 are fixedly connected with the tops of the screw nuts 12, the pressing blocks 14 are right-angled trapezoids, the top of the main body 1 is movably connected with a plurality of filling plates 15, the bottoms of the filling plates 15 are fixedly connected with extrusion blocks 16 matched with the pressing blocks 14, the two sides of the extrusion blocks 16 are fixedly connected with limiting blocks 17, the tops of the limiting plates 13 are movably connected with locking plates 18 on the two sides of the extrusion blocks 16, and one side, far away from the extrusion blocks 16, of each locking plate 18 is fixedly connected with a compression spring 19, the outer wall one side that the locking plate 18 is close to the extrusion piece 16 is equipped with stopper 17 assorted guide chute 20, outer wall one side of locking plate 18 is equipped with positioning groove 21 in guide chute 20 top, the first step 22 of outer wall one side fixedly connected with that lead screw nut 12 is close to locking plate 18, outer wall one side fixedly connected with and first step 22 assorted second step 23 of locking plate 18.

The top of the limiting plate 13 is provided with a first sliding groove matched with the locking plate 18, and when the locking device is used, the locking plate 18 slides left and right in the first sliding groove under the driving of the second step 23, so that the locking device has the functions of limiting and guiding the locking plate 18 to move.

The top of limiting plate 13 is equipped with the second spout with screw-nut 12 assorted, and during the use, screw-nut 12 moves in the second spout under the drive of two screw lead screws 11, and it plays the effect that supplementary two screw lead screws 11 made screw-nut 12 steady motion.

The top of main part 1 is equipped with 2 assorted spacing spouts of table, during the use, table 2 carries out the horizontal slip along spacing spout, plays spacing table 2 and improves its motion stability's effect.

The top of the main body 1 is provided with a movable groove matched with the filling plate 15, and when the filling plate 15 is used, the filling plate 15 is jacked up in the movable groove under the driving of the extrusion block 16, so that the filling plate 15 is placed.

The bottom of the filling-up plate 15 is fixedly connected with limiting plates on two sides of the outer wall of the main body 1, and when the filling-up plate is used, the filling-up plate 15 drives the limiting plates to slide on the outer wall of the main body 1, so that the limiting filling-up plate 15 is played, and the phenomenon that the filling-up plate moves left and right is avoided.

The implementation mode is specifically as follows: when the area of the tabletop needs to be increased, the tabletop 2 is pulled to one side, the tabletop 2 drives the rack 6 to move, the rack 6 drives the transmission gear 8 to rotate, the transmission gear 8 drives the first transmission shaft 7 to rotate, the first transmission shaft 7 drives the first bevel gear 9 to rotate, the first bevel gear 9 drives the second bevel gear 10 to rotate, the second bevel gear 10 drives the double-threaded screw rod 11 to rotate, the double-threaded screw rod 11 drives the second bevel gear 10 at the other end to rotate, then, in the same way, the tabletop 2 at the other side of the top of the device also synchronously moves towards the outer side, meanwhile, when the double-threaded screw rod 11 rotates, the double-threaded screw rod 11 drives the screw rod nut 12 to move, the screw rod nut 12 drives the jacking block 14 to move, then, the jacking block 14 is in contact with the extrusion block 16, the extrusion block 16 is jacked up under the action of the jacking block 14, the extrusion block 16, the filling plate 15 is just parallel to the table 2, when the extrusion block 16 is jacked up, the extrusion block 16 drives the limit block 17 to move up along the guide chute 20, when the extrusion block 16 moves to the highest point, the limit block 17 is just aligned with the positioning groove 21, at the moment, the locking plate 18 loses the limit position, and moves towards the extrusion block 16 under the action of the compression spring 19, so the limit block 17 extends into the positioning groove 21, at the moment, the filling plate 15 is clamped tightly, when the top pressing block 14 is separated from the extrusion block 16, the filling plate 15 cannot fall below again, through arranging a plurality of groups of filling plates 15, the area can be increased arbitrarily, when the table needs to be folded, the table 2 is pushed, after power transmission, the screw rod nut 12 starts to approach from two sides to the middle, and when the screw rod nut 12 drives the top pressing block 14 to pass below the extrusion block 16, the screw rod nut 12 drives the first ladder 22 to contact with the second ladder 23, subsequently, the second step 23 is pushed by the first step 22, the second step 23 drives the locking plate 18 to move, the locking plate 18 overcomes the tension of the compression spring 19 and moves towards two sides, then the limiting block 17 and the positioning groove 21 start to be separated, when the second step 23 is pushed to the end of the stroke, the limiting block 17 and the positioning groove 21 are separated, the filling plate 15 loses limiting, the filling plate falls into the lower main body 1 under the action of gravity, then the filling plate 15 falls one by one along with the closing of the screw rod nut 12, the device finishes folding up at the moment, the structure plays a role in freely adjusting the desktop, the size of the desktop can be freely adjusted according to the requirement, the operation is simple, the use is convenient, and the situation that more temporary participants cause the crowding of the conference table is avoided.

As shown in fig. 1, 3-4 and 7, the conference table capable of adjusting the area and the inclination angle of the table top further comprises support tables 24 fixedly connected to four corners of the bottom of the main body 1, the bottom of the support table 24 is hinged with a connecting post 25, the bottom of the connecting post 25 is rotatably connected with a sleeve 26, one side of the inner wall of the sleeve 26 away from the connecting post 25 is fixedly connected with a second screw nut 27, the inner side of the second screw nut 27 is movably connected with an extending screw 28, the bottom of the extending screw 28 extends to the outer side of the sleeve 26 and is fixedly connected with a support post 29, one side of the outer wall of the sleeve 26 close to the connecting post 25 is fixedly connected with a connecting ring 30, the top of the connecting ring 30 is fixedly connected with a plurality of sliding rods 31, the outer wall of the adjacent sliding rods 31 is movably sleeved with a same displacement sliding ring 33, the top of the displacement slip ring 33 extends to the inner side of the connecting column 25 and is fixedly connected with a plurality of locking blocks 34, and a connecting rod 35 is fixedly connected between two adjacent supporting columns 29.

The inside of spliced pole 25 is equipped with the locking recess with latch segment 34 assorted, and during the use, latch segment 34 keeps laminating with the locking recess under the drive of displacement sliding ring 33, and it plays locking sleeve 26, avoids its self-rotation's effect.

The inner wall fixedly connected with of sleeve 26 and spliced pole 25 assorted rolling bearing, during the use, sleeve 26 carries out the rotation with spliced pole 25 through rolling bearing and is connected, and it has improved the stability of device motion.

The implementation mode is specifically as follows: when the conference table is in an uneven place, the support table 24 at a lower position is found, then the displacement slip ring 33 is pushed downwards, the displacement slip ring 33 slides downwards along the slide rod 31 against the tension of the return spring 32, the displacement slip ring 33 drives the locking block 34 to move, at the moment, the locking block 34 releases the limit of the displacement slip ring 33, then the connecting ring 30 is rotated, the connecting ring 30 drives the sleeve 26 to rotate, the sleeve 26 drives the second screw-rod nut 27 to rotate, at the moment, the second screw-rod nut 27 rotates on the outer wall of the extension screw rod 28, so that the second screw-rod nut 27 synchronously performs ascending motion on the surface of the extension screw rod 28, the second screw-rod nut 27 drives the connecting column 25 to ascend through the sleeve 26, at the moment, the supporting column 29 is stretched, the conference table can be kept horizontally and stably placed through adjustment, and finally the displacement slip ring 33 is released, and the device can complete locking under, the structure plays a role in freely adjusting the inclination angle of the desktop, so that the desktop is prevented from inclining when meeting places are uneven, articles on the desktop slide off, and the use effect of the device is good.

The working principle of the invention is as follows:

with reference to the attached drawings 1-2 and 4-7 of the specification, the top pressing block 14, the extruding block 16, the limiting block 17 and the positioning groove 21 are arranged, so that the function of freely adjusting the table top is achieved, the size of the area can be freely adjusted according to the requirement, the operation is simple, the use is convenient, and the situation that more temporary participants cause crowding of the conference table is avoided.

Further, referring to the attached drawings 1, 3-4 and 7 of the specification, by arranging the displacement slip ring 33, the locking block 34, the connecting ring 30 and the sleeve 26, the function of freely adjusting the inclination angle of the table top is achieved, the situation that when a meeting place is in an uneven place, the table top is inclined, articles on the table top slide down is avoided, and the using effect of the device is good.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a conference table of adjustable desktop area and desktop inclination, includes main part (1), its characterized in that: the equal swing joint in top both sides of main part (1) has table (2), the inside of main part (1) is equipped with drive mechanism (3), the top of main part (1) is equipped with area adjustment mechanism (4) in table (2) below, the bottom of main part (1) is equipped with inclination adjustment mechanism (5).

2. The conference table of claim 1, wherein the table top area and the table top tilt angle are adjustable: the transmission mechanism (3) comprises racks (6) fixedly connected to two sides of the bottom of the table plate (2), first transmission shafts (7) rotatably connected are horizontally arranged on two sides of the inner wall of the main body (1), transmission gears (8) are fixedly connected to two sides of the outer wall of each first transmission shaft (7), the transmission gears (8) are meshed with the adjacent racks (6), double-threaded screws (11) rotatably connected are horizontally arranged between the two first transmission shafts (7) on two sides of the inner wall of the main body (1), second bevel gears (10) are fixedly connected to two ends of each double-threaded screw (11), first bevel gears (9) are fixedly sleeved on two sides of the outer wall of each first transmission shaft (7), the first bevel gears (9) are meshed with the adjacent second bevel gears (10), and two screw nuts (12) are movably sleeved on the outer wall of each double-threaded screw (11), the inner wall bottom of the main body (1) is fixedly connected with a limiting plate (13) matched with a screw-nut (12), the area adjusting mechanism (4) comprises a top pressing block (14) fixedly connected with the top of the screw-nut (12), the top pressing block (14) is in a right trapezoid shape, the top of the main body (1) is movably connected with a plurality of filling plates (15), the bottom of each filling plate (15) is fixedly connected with an extrusion block (16) matched with the top pressing block (14), both sides of each extrusion block (16) are both fixedly connected with limiting blocks (17), the top of each limiting plate (13) is movably connected with locking plates (18) on both sides of each extrusion block (16), one side, far away from the outer wall of each extrusion block (16), of each locking plate (18) is fixedly connected with a compression spring (19), one side, close to the outer wall of each extrusion block (16), of each locking plate (18) is provided with a guide sliding groove (20) matched with, the outer wall one side of locking board (18) is equipped with positioning groove (21) in guide spout (20) top, screw-nut (12) are close to the first halfpace (22) of outer wall one side fixedly connected with of locking board (18), the outer wall one side fixedly connected with of locking board (18) and first halfpace (22) assorted second halfpace (23).

3. The conference table of claim 1, wherein the table top area and the table top tilt angle are adjustable: the top of the limiting plate (13) is provided with a first sliding groove matched with the locking plate (18).

4. The conference table of claim 1, wherein the table top area and the table top tilt angle are adjustable: and a second sliding chute matched with the screw rod nut (12) is arranged at the top of the limiting plate (13).

5. The conference table of claim 1, wherein the table top area and the table top tilt angle are adjustable: the top of the main body (1) is provided with a limiting sliding groove matched with the table board (2).

6. The conference table of claim 1, wherein the table top area and the table top tilt angle are adjustable: the top of the main body (1) is provided with a movable groove matched with the filling plate (15).

7. The conference table of claim 1, wherein the table top area and the table top tilt angle are adjustable: the bottom of the filling plate (15) is fixedly connected with limiting plates on two sides of the outer wall of the main body (1).

8. The conference table of claim 1, wherein the table top area and the table top tilt angle are adjustable: the inclination angle adjusting mechanism (5) comprises supporting tables (24) fixedly connected to four corners of the bottom of the main body (1), connecting columns (25) are hinged to the bottoms of the supporting tables (24), sleeves (26) are rotatably connected to the bottoms of the connecting columns (25), a second screw rod nut (27) is fixedly connected to one side, away from the connecting columns (25), of the inner wall of each sleeve (26), an extension screw rod (28) is movably connected to the inner side of each second screw rod nut (27), the bottom of each extension screw rod (28) extends to the outer side of each sleeve (26) to be fixedly connected with a supporting column (29), a connecting ring (30) is fixedly connected to one side, close to the outer wall of each connecting column (25), of the tops of the connecting rings (30) is fixedly connected with a plurality of sliding rods (31), and the outer wall of each adjacent sliding rod (, the bottom of displacement sliding ring (33) is in slide bar (31) outside fixedly connected with reset spring (32), the top of displacement sliding ring (33) extends to the inboard fixedly connected with a plurality of latch segment (34) of spliced pole (25), two adjacent fixedly connected with connecting rod (35) between support column (29).

9. The conference table of claim 2, wherein the table top area and the table top tilt angle are adjustable: the inner side of the connecting column (25) is provided with a locking groove matched with the locking block (34).

10. The conference table of claim 2, wherein the table top area and the table top tilt angle are adjustable: the inner wall of the sleeve (26) is fixedly connected with a rotating bearing matched with the connecting column (25).