CN106993890A - A kind of rotary opening multifunctional desk - Google Patents

Abstract

The invention discloses a rotary opening and closing multifunctional desk, which is composed of a main table top, an auxiliary table top, a parallelogram mechanism, a main connecting rod, an auxiliary connecting rod, slide rails and table legs; The rail and the auxiliary table are hinged; one end of the pull rod is hinged with the connecting rod of the parallelogram mechanism, and the other end is hinged with the slider. There is a through hole in the middle of the main connecting rod, which is set on the extension shaft of the main table top and connected with the pitch shaft on the table legs. The two ends of the main connecting rod are hinged with the two auxiliary connecting rods, and the two auxiliary connecting rods are sliding The center of the rail connector is hinged, and the two ends of the connecting rod slide rail connector are fixedly connected to the inner slide rails on the two slide rails; the two slide rails are connected to the side of the main desktop through the desktop slide rail connecting plate and screws, and on the table legs The pitch axis, the index plate and the positioning pin of the adjustable table are installed. The main desktop is rotated 90 degrees to realize the combination of the main desktop and the auxiliary desktop; the reverse rotation of the desktop allows the auxiliary desktop to be put away to realize the use of a desk. Its structure is simple and easy to use and operate.

Description

A rotating and opening multifunctional desk

technical field

The invention relates to the technical field of teaching supplies, in particular to a rotary-openable multifunctional desk used by engineering college students for switching between drawing and class modes.

Background technique

Desks are an indispensable tool in learning and life. The size of traditional desks and desktops cannot be changed. The desks used in class mode cannot meet the size of drawing desktops, and the drawing desks that meet the size of drawing desktops occupy an The large area causes inconvenient movement between classes and waste of space resources. If drawing classrooms are specially set up, it will not only cause a waste of time resources because students frequently travel between the learning classrooms and drawing classrooms, but also cause a large number of classrooms to be often idle, resulting in a waste of space resources.

Patent CN 105266384 A discloses a multi-functional desk, which integrates learning and drawing into one body. Although it solves the problem of switching between the class mode and the drawing mode for students, the size of the desk itself cannot be adjusted. Place the drawing board to realize the expansion of the desktop size, and its structure operation is heavy and loaded down with trivial details.

Contents of the invention

In order to avoid the deficiencies of the prior art, the present invention proposes a rotating and opening-closing multifunctional desk; the desk can change the size of the desk by rotating the desk, and the size of the desk itself can be changed without other auxiliary devices, and the structure is simple and the operation is convenient .

The technical scheme that the present invention adopts to solve its technical problem is: comprise main table top, auxiliary table top, parallelogram mechanism, main connecting rod, auxiliary connecting rod, slide rail, table leg, pull bar, inner slide rail, slide block, pitch axis, Indexing plate, positioning pin, desktop slide rail connecting plate, connecting rod slide rail connector, one end of the connecting rod of the parallelogram mechanism is hinged with the inner slide rail on the slide rail, and the other end is hinged with the auxiliary desktop. There is a through hole on the central axis of a connecting rod, which is hinged with one end of the pull rod, and the other end of the pull rod is hinged with the slider on the slide rail. The slider is embedded in the slide groove of the slide rail, and there is a through hole in the middle of the main connecting rod. It is set on the extension shaft of the main table and connected with the pitch shaft on the table legs. The central part of the rail connecting piece is hinged, and the two ends of the connecting rod sliding rail connecting piece are fixedly connected with the inner slide rails on the two sliding rails respectively, and the two connecting rod sliding rail connecting pieces are installed symmetrically, and the two sliding rails are connected to the main desktop. The side end faces are fixedly connected by desktop slide rail connecting plates and screws, and the pitch shaft, indexing plate and positioning pins that can adjust the pitch of the table top are installed on the table legs, and the pitch shaft is used to adjust the distance between the main table top and the table legs. The included angle is positioned by the positioning pin. The indexing plate is located on the upper part of the table leg. The two indexing plates are fixedly connected with the two ends of the pitch axis respectively. There are multiple through holes on the indexing plate, which are respectively fixed at 60 degrees. , 75 degrees, 90 degrees, 105 degrees and 120 degrees, the positioning pins pass through the holes of the index plate and insert into the holes of the table legs to realize the positioning of the desktop pitch angle.

The main table top and the table legs can be rotated by 90 degrees, and the rotation part is provided with a limit mechanism so that it can be relatively locked at 0 degrees and 90 degrees.

The main connecting rod drives the auxiliary connecting rod, so that the auxiliary table top is stretched out in the same phase and merged with the main table top, and the side of the main table top and the auxiliary table top are provided with positioning pins, which are positioned by the positioning pins when the main and auxiliary table tops are assembled; the parallelogram After the main and auxiliary desktops are combined, the mechanism forms an angle greater than 90 degrees with the slide rail, and the inner slide rail moves to the limit state to form a self-locking of the auxiliary desktop.

There is a limit pin between the parallelogram mechanism and the inner slide rail, which is used to prevent the auxiliary desktop from contacting the slide rail when it is retracted.

Beneficial effect

The invention discloses a rotary opening and closing multifunctional desk, which is composed of a main table top, an auxiliary table top, a parallelogram mechanism, a main connecting rod, an auxiliary connecting rod, a slide rail and table legs; one end of the connecting rod of the parallelogram mechanism is connected to the slide rail The inner slide rail is hinged, and the other end is hinged with the auxiliary desktop. A through hole is opened on the center line of a connecting rod on the parallelogram mechanism, and a pull rod is installed on it. The pull rod is hinged with the slider in the slide groove of the slide rail. It has a through hole and is nested on the shaft of the table leg. The two ends of the main connecting rod are respectively hinged with the two secondary connecting rods, the secondary connecting rod is hinged with the connecting rod slide rail connecting piece, and the two ends of the connecting rod sliding rail connecting piece are respectively fixed with the inner slide rails on the two sliding rails. catch. The slide rail is connected with the side end surface of the main desktop through the desktop slide rail connecting plate and screws, and the main desktop is connected with the pitch shaft on the table legs.

The rotary opening and closing multifunctional desk of the present invention realizes that the auxiliary desktop protrudes from the bottom of the main desktop by rotating the desktop by 90 degrees, and is spliced with the main desktop to form a large desktop to meet the needs of drawing pictures. When the students are in class, reversely rotate the desktop to make the secondary desktop be put away, which reduces the space occupied by the desk and realizes the dual-use of the desk and the drawing desk. The utility model has a simple structure and is convenient to use and operate.

Description of drawings

A rotating and opening-closing multifunctional desk of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is an axonometric view of the rotary opening and closing multifunctional desk of the present invention.

Fig. 2 is a structural schematic diagram of the rotary opening and closing multifunctional desk of the present invention.

Fig. 3 is a schematic diagram of the installation parts of the main connecting rod and the auxiliary connecting rod of the rotary opening and closing multifunctional desk of the present invention.

Fig. 4 is a partial perspective view of the quadrilateral mechanism of the rotary open-close multifunctional desk of the present invention.

Fig. 5 is a schematic diagram of the installation position of the index plate of the rotary opening and closing multifunctional desk of the present invention.

In the picture:

1. Main desktop 2. Secondary desktop 3. Parallelogram mechanism 4. Pull rod 5. Slide rail 6. Inner slide rail 7. Slider 8. Main link 9. Sub link 10. Table leg 11. Pitch axis 12. Point Dial 13. Locating pin 14. Connecting rod slide rail connector 15. Desktop slide rail connecting plate

detailed description

This embodiment is a rotating and opening multifunctional desk.

Referring to Fig. 1-Fig. 5, the multi-function desk of rotary opening and closing type in this embodiment consists of a main desktop 1, two sub-desktops 2, four parallelogram mechanisms 3, a main connecting rod 8, two secondary connecting rods 9, four Slide rail 5, table leg 10, tie rod 4, inner slide rail 6, slider 7, pitch axis 11, two indexing plates 12, two positioning pins 13, two desktop slide rail connecting plates 15, two connecting rods Slide rail connector 14 is formed; Wherein, one end of the connecting rod of parallelogram mechanism 3 is hinged with the inner slide rail 6 on the slide rail 5, and the other end is hinged with auxiliary desktop 2; The through hole is hinged with one end of the pull rod 4 , the other end of the pull rod 4 is hinged with the slide block 7 on the slide rail 5 , and the slide block 7 is embedded in the chute of the slide rail 5 . There is a through hole in the middle of the main connecting rod 8, which is set on the extension shaft of the main table top 1, and is connected with the pitch shaft 11 of the table leg 10; The other end of the secondary connecting rod 9 is respectively hinged with the central parts of the two connecting rod slide rail connectors 14, and the two ends of the connecting rod slide rail connectors 14 are respectively fixedly connected with the inner slide rails 6 on the two slide rails 5; A slide rail 5 is fixedly connected with the main desktop 1 side end surface by a desktop slide rail connecting plate 15 and screws. The table leg 10 has a pitch axis 11, an indexing plate 12 and a positioning pin 13 which can adjust the pitch of the table top; The indexing plate 12 is installed on the top of the table leg 10, and the two indexing plates 12 are respectively fixedly connected with the two ends of the pitch axis 11. The index plate 12 is processed with a plurality of through holes, five through holes in this embodiment, and the five through holes are respectively fixed at 60 degrees, 75 degrees, 90 degrees, 105 degrees and 120 degrees, and the positioning pin 13 passes through the indexing The plate hole is inserted into the hole of the table leg and has an interference fit with it, so as to realize the positioning of the pitch angle of the table top.

In this embodiment, the main connecting rod 8 drives the auxiliary connecting rod 9 to simultaneously unfold the two auxiliary table tops 2, so that the auxiliary table tops 2 stretch out in the same phase and merge with the main table top 1. When the auxiliary table tops 2 are unfolded, the main table top 1 is rotated. Make the main connecting rod 8 rotate relative to the main desktop 1, the main connecting rod 8 synchronously drives the two auxiliary connecting rods 9 to move to both sides, and the two auxiliary connecting rods 9 drive the inner sliding rail 6 outward through the connecting rod sliding rail connector 14 Stretch out, the inner slide rail 6 transmits power to the auxiliary desktop 2 to realize the outward extension of the auxiliary desktop 2. The side of the main desktop 1 and the side of the auxiliary desktop 2 are provided with positioning pins, which are positioned by the positioning pins when the main desktop 1 and the auxiliary desktop 2 are combined. The parallelogram mechanism 3 forms an angle greater than 90 degrees with the slide rail 5 after the main desktop 1 and the auxiliary desktop 2 are assembled, and the inner slide rail 6 moves to the limit state to form the self-locking of the auxiliary desktop 2. A limit pin is arranged between the parallelogram mechanism 3 and the inner slide rail 6 to prevent the auxiliary desktop 2 from contacting the slide rail 5 when it is retracted.

operation process

In this embodiment, the parallelogram mechanism is a parallelogram formed by two connecting rods of the same size together with the slide rail 5 and the auxiliary desktop 2 , and one of the connecting rods is connected with the pull rod 4 . The pull rod 4 is hinged with the slide block 5, and the slide block 5 is installed in the chute and slides relatively therewith. When the auxiliary desktop 2 is unfolded, the inner slide rail 6 is pushed outward by the connecting rod slide rail connector 14, which drives the auxiliary desktop 2 to stretch outward, and the pull rod 4 drives the slider 5 to move in the chute. When the slider 5 moves to When the chute is at the extreme end, the pull rod 4 pulls the parallelogram mechanism to make it relatively rotate around the inner slide rail 6, so that the auxiliary table top 2 is lifted upwards, and the positioning pin on it cooperates with the groove on the main table top 1, so that the two table tops are completed. stitching. When the two desktops are spliced together, the angle between the parallelogram mechanism and the inner slide rail changes from an acute angle to an obtuse angle, and the inner slide rail 6 moves to the extreme far end. The pulling force of the mechanism, thus forming the self-locking of the structure.

The main connecting rod 8 is fixedly welded with the pitch axis 11, and the pitch axis 11 is fixedly welded with the index plate 12. When the desktop angle needs to be adjusted, the positioning pin 13 is pulled out, and the entire desktop rotates with the pitch axis 11 as the center of rotation, and then is positioned by the positioning pin 13, thereby completing the rotation adjustment of the desktop angle between plus and minus 30 degrees.

The main desktop 1 and the table legs 10 can be rotated 90 degrees, and the connected rotation part is provided with a limit mechanism, so that the table can be relatively stuck in two use states, that is, at 0 degrees and 90 degrees. The main desktop is rotated 90 degrees to realize the combination of the main desktop and the auxiliary desktop; the reverse rotation of the desktop allows the auxiliary desktop to be put away to realize the use of a desk. The structure of the desk is simple and the operation is convenient.

Claims (4)

1. a kind of rotary opening multifunctional desk, it is characterised in that:Including top table face, auxiliary table surface, parallel-crank mechanism, master Connecting rod, slave connecting rod, slide rail, table leg, pull bar, interior slide rail, sliding block, pitch axis, index dial, alignment pin, desktop slide rail connecting plate, company Bar slide rail connector, connecting rod one end of the parallel-crank mechanism is hinged with the interior slide rail on slide rail, the other end and auxiliary table surface It is hinged, through hole is provided with a connecting rod axis of parallel-crank mechanism, and be hinged with pull bar one end, the pull bar other end and cunning Sliding block on rail is hinged, and sliding block is embedded in the chute of slide rail, has through hole to be sleeved on the stretching in top table face in the middle of the master connecting-rod It is connected on axle and with the pitch axis on table leg, the one end of master connecting-rod two ends respectively with two slave connecting rods is hinged, two slave connecting rods Centre of the other end respectively with two connecting rod slide rail connectors is hinged, the two ends of connecting rod slide rail connector respectively with two cunnings Interior slide rail on rail is affixed, and two connecting rod slide rail connectors are symmetrically installed, and two slide rails pass through desktop with top table surface side end face Slide rail connecting plate, screw are connected, and the pitch axis, index dial and alignment pin of top-adjustable pitching, institute are provided with the table leg Stating pitch axis is used to adjust the angle between top table face and table leg, and is positioned by alignment pin, and the index dial is located at table Leg top, two index dials are connected with the two ends of pitch axis respectively, there is multiple through holes on index dial, fix respectively 60 degree, 75 Degree, 90 degree, 105 degree and 120 degree, alignment pin is inserted in table leg hole through disk hole is indexed, and realizes the positioning of desktop luffing angle.

2. rotary opening multifunctional desk according to claim 1, it is characterised in that:The top table face and the table leg Between can carry out 90 degree of rotation, rotation portion is provided with position-limit mechanism, enables it relatively stuck in 0 degree and 90 degree.

3. rotary opening multifunctional desk according to claim 1, it is characterised in that:The master connecting-rod drives the pair Connecting rod, makes auxiliary table surface be stretched out with same-phase and the split of top table face, and top table side is provided with alignment pin with auxiliary table surface side, in major-minor By positioning finger setting during desktop split；Parallel-crank mechanism is after major-minor desktop split with slide rail into the folder more than 90 degree Angle, and interior slide rail moves to limiting condition, forms the self-locking of auxiliary table surface.

4. rotary opening multifunctional desk according to claim 1, it is characterised in that:Parallel-crank mechanism and interior cunning Limited location pin between rail, for preventing auxiliary table surface from being contacted when packing up with slide rail.