CN108835892B

CN108835892B - All-round rotatory drawing desk

Info

Publication number: CN108835892B
Application number: CN201810593248.1A
Authority: CN
Inventors: 张岩
Original assignee: Hangzhou Konwac Furniture Co ltd
Current assignee: Zhejiang Ganghua Furniture Industry Co.,Ltd.
Priority date: 2018-06-11
Filing date: 2018-06-11
Publication date: 2021-02-12
Anticipated expiration: 2038-06-11
Also published as: CN108835892A

Abstract

The invention relates to an all-directional rotary drawing table, which effectively solves the problem that the tabletop is inconvenient to rotate and tilt; the technical scheme includes that the device comprises a first flat plate, a vertical rod is arranged on the first flat plate, a table plate is connected to the upper end of the vertical rod in a ball joint mode, a plurality of sleeves penetrating through the first flat plate are arranged on the first flat plate and can move up and down, a movable plate is connected to the upper end of each sleeve in a ball joint mode and is in parallel contact with the table plate and can slide relatively, grooves are formed in the outer edge surface of each sleeve and penetrate through a cylinder wall, a rotating shaft rotating automatically is arranged in each sleeve, gears arranged in the grooves are arranged on the rotating shaft, a push plate is arranged on the first flat plate, racks are arranged on two sides of the push; the center of the rotating shaft is provided with an ejector rod which can move up and down, the lower end face of the table plate is provided with a plurality of counter bores, the movable plate is provided with a positioning rod which moves up and down, the ejector rod upwards drives the positioning rod to move up, and the positioning rod can be arranged in the counter bores. The invention has convenient operation and stable drawing.

Description

All-round rotatory drawing desk

Technical Field

The invention relates to the field of drawing tables, in particular to an all-directional rotary drawing table.

Background

At present, when building design is carried out in colleges and universities or enterprises, drawing is generally carried out in a special drawing room by using a drawing table; the traditional drawing table is characterized in that a drawing board is horizontally placed on the table, the inclination angle of the drawing board is controlled by a lifting adjusting device, the adjusting device is generally limited in adjusting angle and large in board surface, a drawing worker has to stand for drawing in order to take consideration of the upper and lower parts, the drawing worker frequently stands even sitting on the drawing table, and the drawing sheet at the top can only be stood on the waist and placed on the body to dirty the drawing sheet; for people with different heights, drawings with different heights need to be drawn in different postures, and are often drawn one by one, so that a drawing person feels waist soreness and back pain and dizziness; meanwhile, when drawing some directional views, a plotter often needs to walk to a certain direction to observe and draw, and especially when drawing some lines with angles, the user needs to twist hands to draw, which is very inconvenient; how to make the plotter efficiently complete the work and reduce the physical burden is also a great concern for the plotters.

Disclosure of Invention

In view of the above situation, in order to solve the problems in the prior art, the present invention provides an all-directional rotation drawing table, which can effectively solve the problem of inconvenient rotation and inclination of the table top.

The technical scheme includes that the table comprises a first flat plate, a vertical rod is fixed on the upper end face of the first flat plate, a table plate is connected to the upper end ball of the vertical rod, four sleeves vertically penetrating through the first flat plate are evenly distributed on the circumference of the first flat plate, the sleeves can move up and down along the first flat plate and reset upwards, a movable plate is connected to the upper end ball of each sleeve, and the movable plate is in parallel contact with the lower end face of the table plate and can slide relatively;

the outer edge surface of the sleeve is provided with a groove in the vertical direction, the groove penetrates through the wall of the sleeve, the front side surface of each sleeve is fixed with a vertical ratchet, and the lower end surface of the first flat plate is fixed with a pin capable of moving back and forth, and the pin can prevent the ratchet from moving downwards; a rotating shaft which moves up and down along with the sleeve and can rotate automatically is arranged in the sleeve, a gear arranged in a groove is sleeved on the rotating shaft, the height of the gear is greater than that of the groove, a push plate capable of moving back and forth is arranged on the lower end face of the first flat plate, a front section of rack and a rear section of rack are arranged on the left side and the right side of the push plate, and the front and the rear racks at the two ends respectively correspond to the front and; the rack can be meshed with the gear, a rope is connected between the push plate and the pin, the push plate moves forwards and can pull the pin to be separated from the ratchet bar, the push plate moves backwards, and the ratchet bar is clamped by the pin at the moment;

a vertical ejector rod is arranged in the center of the rotating shaft, the rotating shaft rotates to enable the ejector rod to move up and down, a plurality of counter bores are uniformly distributed on the lower end face of the table plate, each movable plate is provided with at least one positioning rod capable of moving up and down along the movable plate and resetting downwards, the ejector rod moves upwards to drive the positioning rods to move upwards, the upper ends of the positioning rods penetrate through the movable plates and are placed in the counter bores, the movable plates and the table plate cannot slide relatively, and the pins clamp the ratchet bars at the moment to enable the sleeve barrel not to move; when the push plate moves forwards, the rotating shaft rotates reversely, the positioning rod resets downwards and is separated from the counter bore, and the movable plate and the table plate can slide relatively.

The invention has novel concept, smart structure, strong practicability and convenient operation, meets different drawing requirements and simultaneously ensures the stability of drawing.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a top view of a disk of the present invention.

Fig. 3 is a top view of the first plate of the present invention.

Fig. 4 is a bottom view of the first plate of the present invention.

FIG. 5 is a top cross-sectional view of the sleeve.

Fig. 6 is a partially enlarged sectional view taken at a in fig. 1.

FIG. 7 is a top cross-sectional view of the sleeve.

Fig. 8 is an exploded view of the fit relationship of the sleeve, the rotating shaft, the gear and the ejector rod.

Fig. 9 is a partially enlarged view of a portion B in fig. 4.

Detailed Description

The following describes in further detail embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1 to 9, the invention comprises a first flat plate 1, wherein a vertical rod 2 is fixed on the upper end surface of the first flat plate 1, a table plate 3 is connected to the upper end ball of the vertical rod 2, four sleeves 4 vertically penetrating through the first flat plate 1 are uniformly distributed on the circumference of the first flat plate 1, the sleeves 4 can move up and down along the first flat plate 1 and reset upwards, a movable plate 5 is connected to the upper end ball of the sleeves 4, and the movable plate 5 is in parallel contact with the lower end surface of the table plate 3 and can slide relatively;

the outer edge surface of the sleeve 4 is provided with a groove 6 in the vertical direction, the groove 6 penetrates through the cylinder wall of the sleeve 4, the front side surface of each sleeve 4 is fixed with a vertical ratchet 19, the lower end surface of the first flat plate 1 is fixed with a pin 20 capable of moving back and forth, and the pin 20 can prevent the ratchet 19 from moving downwards; a rotating shaft 7 which moves up and down along with the sleeve 4 and can rotate automatically is arranged in the sleeve 4, a gear 8 arranged in a groove 6 is sleeved on the rotating shaft 7, the height of the gear 8 is greater than that of the groove 6, a push plate 9 capable of moving back and forth is arranged on the lower end face of the first flat plate 1, front and rear sections of racks 10 are arranged on the left side and the right side of the push plate 9, and the front and rear racks 10 correspond to the front and rear sleeves 4 respectively; the rack 10 can be meshed with the gear 8, a rope 21 is connected between the push plate 9 and the pin 20, the push plate 9 moves forwards and can pull the pin 20 to be separated from the ratchet 19, the push plate 9 moves backwards, and the pin 20 clamps the ratchet 19 at the moment;

a vertical ejector rod 11 is arranged at the center of the rotating shaft 7, the rotating shaft 7 rotates to enable the ejector rod 11 to move up and down, a plurality of counter bores 12 are uniformly distributed on the lower end face of the table plate 3, each movable plate 5 is provided with at least one positioning rod 13 which can move up and down along the movable plate 5 and reset downwards, the ejector rod 11 moves upwards to drive the positioning rods 13 to move upwards, the upper ends of the positioning rods 13 penetrate through the movable plate 5 and are placed in the counter bores 12, the movable plate 5 and the table plate 3 cannot slide relatively, and the ratchet 19 is tightly clamped by the pins 20 at the moment, so that the sleeve 4 cannot move; when the push plate 9 moves forwards, the rotating shaft 7 rotates reversely, the positioning rod 13 resets downwards and is separated from the counter bore 12, so that the movable plate 5 and the table plate 3 can slide relatively.

In order to better guide the sleeve 4, a second flat plate 14 parallel to the first flat plate 1 is arranged below the first flat plate 1, and the lower end of the sleeve 4 penetrates through and is arranged below the second flat plate 14.

In order to enable the ejector rod 11 to move upwards to drive the positioning rod 13 to move upwards, a circular ring 16 capable of moving upwards and downwards is sleeved on the outer edge surface of the sleeve 4, a connecting rod 17 penetrating through the sleeve 4 is connected to the middle of the circular ring 16, the connecting rod 17 can be in contact with the upper end of the ejector rod 11, an air bag 18 is fixed above the circular ring 16, and the air bag 18 can be in contact with the lower end of the positioning rod 13.

In order to realize that the sleeve 4 can move up and down along the first flat plate 1 and reset upwards, the lower end of the sleeve 4 is arranged below the second flat plate 14, the sleeve 4 is sleeved with a tension spring, one end of the tension spring is fixed at the lower end of the sleeve 4, and the other end of the tension spring is fixed on the lower end face of the second flat plate 14.

In order to enable the rotating shaft 7 to rotate to enable the ejector rod 11 to move up and down, a center hole with an upward opening is formed in the center of the rotating shaft 7, the ejector rod 11 is arranged in the center hole, the ejector rod 11 is in threaded connection with the center hole, a fixing block is arranged on the upper portion of the sleeve 4, the ejector rod 11 penetrates through the fixing block, and the ejector rod 11 and the fixing block are matched through a key and a key groove, so that the ejector rod 11 can move up and down along the fixing block.

In order to enable the positioning rod 13 to be reset downwards, a pressure spring is sleeved on the positioning rod 13, one end of the pressure spring is connected with the lower end of the positioning rod 13, and the other end of the pressure spring is connected with the lower end face of the movable plate 5.

In order to make the rack 10 and the gear 8 fit more appropriately, a space is provided between the front and rear sections of rack 10, and when the space corresponds to the gear 8, each rack 10 does not contact with the corresponding gear 8.

In order to make the pin 20 catch the ratchet 19, the pin 20 is provided with a bevel, which is inclined downwards.

In order to raise the sleeve 4, the rack 10 may engage with the gear 8, and the gear 8 may have a certain length and a plurality of gears may be arranged in a vertical direction.

In order to better fix the flat plate, the flat plate is connected with a compression bolt in a threaded manner, and the upper end of the compression bolt can be in contact with the lower end face of the first flat plate 1.

In order to prevent the sleeve 4 from rotating, a plurality of vertical convex strips are arranged on the outer edge surface of the sleeve 4.

For more stability, a plurality of reinforcing ribs are connected between the lower end of the vertical rod 2 and the upper end face of the first flat plate 1.

In order to make the rotating shaft 7 rotate in the sleeve 4, bearings are arranged at the upper end and the lower end of the rotating shaft 7, and the outer edge surface of each bearing is matched with the inner edge surface of the sleeve 4.

For better rotation, the upper end of the vertical plate is in ball joint with the center of the lower end surface of the table plate 3, and meanwhile, the center of the movable plate 5 is in ball joint with the upper end of the sleeve 4.

Before the use, the first flat plate 1 and the second flat plate 14 are supported by the table legs, so that the first flat plate 1 and the second flat plate 14 are kept in a horizontal state; at the moment, the push plate 9 is positioned in front of the first flat plate 1, so that the pin 20 is separated from the clamping ratchet 19, and simultaneously, the racks 10 on the two sides of the push rod are not meshed with the gear 8; so that the sleeve 4 is in a state of being movable up and down; the top rod 11 is at the lower initial position and does not rise, so the connecting rod 17 and the circular ring 16 contacting with the upper end of the top rod 11 are also at the lower initial position, and the air bag 18 is fixedly connected with the circular ring 16, so the air bag 18 is also at the lower initial state, the air bag 18 does not extrude the positioning rod 13 at this time, so the positioning rod 13 is at the lower part under the action of the tension spring sleeved on the positioning rod 13, and the upper end of the positioning rod 13 is arranged in the movable plate 5 and does not extend out of the movable plate 5, so that the movable plate 5 and the table plate 3 are only in a contact state.

Because the center of the lower end surface of the table plate 3 is in ball joint, and the center of the lower end surface of the movable plate 5 is also in ball joint, the table plate 3 and the movable plate 5 can rotate or incline at will, and simultaneously, because the movable plate 5 is supported by the sleeve 4, the sleeve 4 can move up and down, and the sleeve 4 is sleeved with a tension spring, the sleeve 4 has upward force, when the table plate 3 rotates or inclines, the movable plate 5 can be always pressed on the lower end surface of the table plate 3 under the action of the sleeve 4, so that the active plate and the table plate 3 are kept parallel; since the center of the table 3 is supported (i.e., ball-jointed) and the position of the sleeve 4 is fixed (only capable of moving up and down), the supporting point of the sleeve 4 relative to the table 3 changes during the tilting of the table 3, and at this time, the movable plate 5 is relatively displaced from the table 3 due to the contact state of the movable plate 5 and the lower end surface of the table 3, so that the movable plate 5 and the table 3 are kept parallel.

In the above process, the sleeve 4 can move up and down, and the active plate and the table plate 3 can slide relatively, so that the table plate 3 is in a free state, can rotate and can incline, and after the table plate 3 rotates or inclines to reach the purpose, the table plate 3 needs to be limited and fixed at the moment.

When the table plate 3 is fixed, firstly, the position of the table plate 3 is kept still, then the push plate 9 is pushed backwards, at the moment, the rope 21 is loosened, the pin 20 can be clamped into the ratchet 19, so that the sleeves 4 cannot move downwards and are supported by a plurality of sleeves 4; meanwhile, after the push plate 9 moves backwards, the rack 10 is meshed with the gear 8 in the groove 6, so that the gear 8 rotates, the gear 8 rotates to drive the rotating shaft 7 to rotate, and the upper end and the lower end of the rotating shaft 7 are sleeved with bearings, so that the rotating shaft can rotate stably.

After the rotating shaft 7 rotates, a center hole is formed in the center of the rotating shaft 7, the ejector rod 11 is connected with the center hole in a threaded mode, the ejector rod 11 is limited through the fixing block, the positioning rod 13 cannot rotate, the rotating shaft 7 rotates, the ejector rod 11 can move upwards, after the ejector rod 11 moves upwards, the upper end of the ejector rod 11 pushes the connecting rod 17 to enable the connecting rod 17 and the circular ring 16 to move upwards, and meanwhile, the airbag 18 is fixed on the upper end face of the circular ring 16, so that the airbag 18 can move upwards.

When the air bag 18 contacts the lower end face of the positioning rod 13 and continues to move upwards, the air bag 18 presses the positioning rod 13 at the moment, so that the positioning rod 13 moves upwards, at the moment, the upper end of the positioning rod 13 passes through the movable plate 5 and continues to move upwards, at the moment, the movable plate 5 keeps parallel contact with the table plate 3, namely, the movable plate 5 also keeps parallel with the table plate 3 on the lower end face of the table plate 3, and the positioning rod 13 is perpendicular to the table plate 3 because the positioning rod 13 is perpendicular to the movable plate 5, and the positioning rod 13 keeps parallel to the counter bore 12 because the counter bore 12 on the table plate 3 is perpendicular to the table plate 3; the counter bores 12 are distributed densely, so that the positioning rods 13 can be easily placed in the counter bores 12, and the positions of the push plates 9 and the positioning rods 13 are fixed; therefore, the sleeve 4 cannot move up and down at this time, so that the table plate 3 cannot be inclined; meanwhile, the table plate 3 and the movable plate 5 are connected through the positioning rod 13, so that the table plate 3 cannot rotate relative to the movable plate 5, and the table plate 3 cannot rotate because the movable plate 5 is in ball joint with the sleeves 4 and the number of the sleeves 4 is four, and at the moment, the table plate 3 is fixed.

After the table plate 3 is fixed, drawing can be carried out; when the drawing needs to be performed by rotation, for example, the upper end of the table plate 3 is not easy to operate, or drawings such as left-view drawings are drawn, or multi-angle viewing needs to be performed, since the drawings are fixed, rotation is not convenient, at this time, the push plate 9 can be pulled forward, the gear 8 can rotate reversely, the gear 8 rotates reversely to drive the rotating shaft 7 to rotate reversely, the ejector rod 11 can descend, the air bag 18 and the circular ring 16 can also descend along with the descending of the ejector rod 11, at this time, the positioning rod 13 can also descend, at the same time, the positioning rod 13 can be kept at the lower position by the pressure spring sleeved on the positioning rod 13, at this time, the movable plate 5 is separated from the table plate 3, the table plate 3 can be rotated, and at the same time of rotation, the rope 21 is not tensioned, the pin 20; when the table plate 3 needs to be inclined, the push plate 9 can be continuously pulled forwards, so that the racks 10 on the two sides of the push plate 9 are separated from the gear 8, meanwhile, the rope 21 is also tensioned, and the pin 20 is pulled to move forwards and is separated from the ratchet 19; at the moment, the sleeve 4 can move up and down again, so that the whole device is restored to the state before use, and the table plate 3 can rotate at multiple angles.

The invention achieves the purpose of rotating the table plate 3 and inclining the table plate 3 by connecting a ball to the center of the lower end surface of the traditional table plate 3, is convenient for various requirements in the drawing process, simultaneously takes the supporting problem after the rotation of the table plate 3 into consideration, supports the table plate by arranging the sleeve 4 which can move up and down, and can meet the multi-angle rotation of the table plate 3 because the sleeve 4 can move up and down.

When the inclination angle and the rotation angle of the table plate 3 are creatively fixed, the two states of fixation can be completed by only pushing and pulling the push plate 9, on one hand, the pin 20 and the ratchet bar 19 are controlled to be matched through the forward and backward movement of the push rod, so that the sleeve 4 cannot move up and down, on the other hand, the gear 8 is arranged in the groove 6, the ejector rod 11 in the sleeve 4 is lifted through the matching of the gear 8 and the rack 10, and further, the positioning rod 13 on the movable plate 5 is placed in the counter bore 12 on the table plate 3, so that the movable plate 5, the table plate 3 and the table plate 3 are kept rotating at the same time, and the rotation limitation of the table plate 3 is realized.

According to the invention, the air bag 18 is arranged, so that when the movable plate 5 rotates or is subjected to hair braid inclination, due to the volume and compressibility of the air bag 18, the positioning rod 13 is extruded by the air bag 18, force can be conveniently applied when the positioning rod 13 is in a non-vertical state, and meanwhile, the situation that the positioning rod 13 is directly contacted with the circular ring 16 to be abraded or cannot be contacted can be avoided.

The invention has novel concept, smart structure, strong practicability and convenient operation, meets the requirements of different drawing angles and simultaneously ensures the stability of drawing.

Claims

1. An all-directional rotary drawing table comprises a first flat plate (1), and is characterized in that a vertical rod (2) is fixed on the upper end face of the first flat plate (1), a table plate (3) is connected to the upper end ball of the vertical rod (2), a plurality of sleeves (4) vertically penetrating through the first flat plate (1) are uniformly distributed on the first flat plate (1) in the circumferential direction, the sleeves (4) can move up and down along the first flat plate (1) and reset upwards, a movable plate (5) is connected to the upper end ball of each sleeve (4), and the movable plate (5) is in parallel contact with the lower end face of the table plate (3) and can slide relatively;

the outer edge surface of each sleeve (4) is provided with a groove (6) in the vertical direction, each groove (6) penetrates through the cylinder wall of each sleeve (4), a vertical ratchet strip (19) is fixed on the front side surface of each sleeve (4), a pin (20) capable of moving back and forth is fixed on the lower end surface of each first flat plate (1), and the pin (20) can prevent the ratchet strips (19) from moving downwards; a rotating shaft (7) which moves up and down along with the sleeve (4) and can rotate freely is arranged in the sleeve (4), a gear (8) arranged in the groove (6) is sleeved on the rotating shaft (7), the height of the gear (8) is greater than that of the groove (6), a push plate (9) capable of moving back and forth is arranged on the lower end face of the first flat plate (1), a front section of rack (10) and a rear section of rack (10) are arranged on the left side and the right side of the push plate (9), and the front end rack (10) and the rear end rack (10) correspond to the front sleeve; the rack (10) can be meshed with the gear (8), a rope (21) is connected between the push plate (9) and the pin (20), the push plate (9) moves forwards and can pull the pin (20) to be separated from the ratchet (19), the push plate (9) moves backwards, and the pin (20) clamps the ratchet (19) at the moment;

a vertical ejector rod (11) is arranged at the center of the rotating shaft (7), the rotating shaft (7) rotates to enable the ejector rod (11) to move up and down, a plurality of counter bores (12) are uniformly distributed on the lower end face of the table plate (3), at least one positioning rod (13) capable of moving up and down along the movable plate (5) and resetting downwards is arranged on each movable plate (5), the ejector rod (11) moves upwards to drive the positioning rods (13) to move upwards, the upper end of each positioning rod (13) penetrates through the movable plate (5) and is placed in the counter bore (12), the movable plate (5) and the table plate (3) cannot slide relatively, and the pin (20) clamps the ratchet bar (19) at the moment to enable the sleeve (4) not to move up; when the push plate (9) moves forwards, the rotating shaft (7) rotates reversely, the positioning rod (13) resets downwards and is separated from the counter bore (12), so that the movable plate (5) and the table plate (3) can slide relatively.

2. An all-directional rotary drawing table according to claim 1, wherein a second plate (14) parallel to the first plate (1) is provided below the first plate (1), and the lower end of the sleeve (4) is inserted through and positioned below the second plate (14).

3. An all-directional rotation drawing table according to claim 1, wherein the outer edge surface of the sleeve (4) is sleeved with a ring (16) capable of moving up and down, the middle part of the ring (16) is connected with a connecting rod (17) penetrating through the sleeve (4), the connecting rod (17) can be contacted with the upper end of the ejector rod (11), an air bag (18) is fixed above the ring (16), and the air bag (18) can be contacted with the lower end of the positioning rod (13).

4. An all-directional rotation drawing table according to claim 3, wherein the lower end of the sleeve (4) is disposed below the second plate (14), the sleeve (4) is sleeved with a tension spring, one end of the tension spring is fixed at the lower end of the sleeve (4), and the other end of the tension spring is fixed at the lower end face of the second plate (14).

5. An all-direction rotation drawing table according to claim 1, wherein the center of the rotating shaft (7) is provided with a center hole with an upward opening, the ejector rod (11) is arranged in the center hole, the ejector rod (11) is in threaded connection with the center hole, the upper part of the sleeve (4) is provided with a fixed block, the ejector rod (11) penetrates through the fixed block, and the ejector rod (11) and the fixed block are matched with each other through a key and a key groove, so that the ejector rod (11) can move up and down along the fixed block and cannot rotate.

6. The all-directional rotation drawing desk as claimed in claim 1, wherein the positioning rod (13) is sleeved with a compression spring, one end of the compression spring is connected with the lower end of the positioning rod (13), and the other end of the compression spring is connected with the lower end face of the movable plate (5).

7. An all-round rotary drawing table according to claim 1, characterized in that there is a space between the two racks (10) and when the space corresponds to the gear (8), each rack (10) does not contact the corresponding gear (8).

8. An all-sided rotational drawing table according to claim 1, wherein the pins (20) are beveled, the bevels being downwardly inclined.

9. An all-sided rotational drawing table according to claim 1, characterised in that the gear (8) has a certain length, while also allowing a plurality of gears to be arranged one above the other.