CN203952937U - Manual-automatic integrated multifunctional drawing desk - Google Patents

Abstract

Manual-automatic integrated multifunctional drawing desk, relate to mechanical design field, solve the function singleness that existing common desk exists, cannot adapt to different height crowds, desktop cannot tilt adjustments problem, comprise desktop, base, table leg, intelligence control system, by comprising motor support plate, the first motor, first handle, worm screw, worm gear, slider bar, major axis bearing, major axis, chain, key, packing ring, sprocket shaft, the second stiffener, the first stiffener, cage plate, the elevating mechanism of locating piece and sprocket wheel composition, by sliding bar, second handle, leading screw, the second motor, play frame pole thread spindle, rhombus stretches assembly, the change of pitch angle mechanism of roller and guide rail composition.Utilize the utility model change of pitch angle mechanism, elevating mechanism and intelligence control system realize desk integral elevating and desktop tilts, and draws convenient stable, has improved drawing quality, for study drawing student's student provides good plotting equipment.The utility model performance is good, efficiency is high, is easily accepted by student.

Description

Manual-automatic integrated multifunctional drawing desk

Technical field

The utility model relates to mechanical designing technique field, is specifically related to a kind of Manual-automatic integrated multifunctional drawing desk.

Background technology

Desk for students chair occupies very consequence in student's learning life at ordinary times, routine work all be unable to do without it, utilization rate is very high, desk and chair is also the important external environment of cultivating student's good sitting position, it and deformity of spinal column syndrome and bathomorphicly have a close relationship, also be a key factor that affects ability of fulfilling school assignment and body function, therefore desk for students chair more should meet base of principle of human engineering, so not only can make student form good sitting posture custom, can also improve operating efficiency, reduce the incidence of disease of occupational disease.

In national universities, offer according to investigations reach 200 of mechanical drawing class, number of users approximately 400,000, and along with the fast development of Chinese manufacturing, student's ratio of study Mechanical Drawing Taught also can increase year by year, in the face of more and more outstanding problems in teaching and health problem, will need plotting equipment to carry out innovative design.

At present, existing common desk is mostly to adopt desktop, table leg and drawer to form, and function singleness is gone to school and left school and need be removed chart board or drawing does not have chart board; Table height is fixed, and cannot adapt to different proportion height crowd's needs; Desktop is flat, and Graphing of Engineering needs long-time drawing, and long-term use can cause cervical vertebra disfiguration, the malaise symptoms such as have a pain in the back.

Utility model content

In order to solve function singleness that existing common desk exists, cannot adapt to different height crowds, problem that desktop cannot tilt adjustments, the utility model provides a kind of Manual-automatic integrated multifunctional drawing desk.

The utility model for the technical scheme that technical solution problem adopts as follows:

Manual-automatic integrated multifunctional drawing desk, comprises desktop and two bases, and two table legs are installed on each base; Also comprise:

Elevating mechanism, comprise on two table legs on same base and be set with a cage plate, two ends are arranged on respectively the major axis of two cage plate upper ends by major axis bearing, be sleeved on the worm gear on major axis, with the worm gear worm screw that is engagement, be separately fixed at first handle and first motor at worm screw two ends, be fixed on support for the motor support plate of the first motor is installed, be sleeved on two sprocket wheels at major axis two ends, be fixed on the key between sprocket wheel and major axis, each cage plate lower end is fixed with a sprocket shaft, upper and lower side is set on sprocket wheel and sprocket shaft and by locating piece and is fixed on a chain on table leg, the upper and lower side in each table leg outside is respectively arranged with a slider bar, upper end slider bar is arranged on table leg and with cage plate inner slide and is connected, and lower end slider bar is arranged on cage plate and with table leg outside slip and is dynamically connected,

Be fixed on support on cage plate, be fixed on base plate in the plane being formed by rack upper surface and cage plate upper surface, be arranged on base plate two ends respectively and lay respectively at two desktop supports of two cage plate upper ends, described desktop is arranged on desktop support by rotating shaft;

Change of pitch angle mechanism, comprising: two ends are arranged in the slip plane of desktop support and in slip plane, can do the sliding bar of straight reciprocating motion, are connected by screw pair with sliding bar and are positioned at leading screw on base plate, are separately fixed at leading screw two ends and are positioned at second handle on base plate and the second motor, be arranged on two rollers that two rhombuses on two desktop supports stretch assemblies, are arranged on two guide rails of desktop lower surface, are arranged on respectively two rhombuses stretching, extension assembly upper ends and can slide at the chute of guide rail respectively;

The intelligence control system that is arranged on desktop upper surface and is electrically connected with the first motor and the second motor respectively, send corner and the rotating of specific different time length electric impulse signal control the first motor and the second motor by intelligence control system, drive worm screw and leading screw to rotate simultaneously, realize desk integral elevating and desktop tilt variation.

Also comprise: be fixed on the telescopic component on base plate by interim spillikin, described telescopic component is by multiple connecting rods and connecting axle forms and temporarily flexible to two ends centered by spillikin; Be separately fixed at two workbench at telescopic component two ends, these two workbench lay respectively in the square opening of two desktop supports and can extract out thus.

Also comprise: the tool ruler that is arranged on desktop upper surface; Described tool ruler one end bossing coordinates and can in groove, slide with the 3mm groove of desktop surrounding.

Described elevating mechanism also comprises: the second stiffener that the first stiffener, activity are placed on inside cage plate and its two ends are connected with the inner slide of two table legs that is fixed on cage plate outside; Sprocket shaft one end is fixed on cage plate outside by the first stiffener, and the other end is fixed on the second stiffener and stretches out cage plate outside.

Also comprise: be arranged on sprocket shaft and be positioned at the packing ring of the second stiffener inner side.

Described rhombus stretches assembly and is made up of multiple lifting levers and little axle, roller is arranged on lifting lever end topmost, in two lifting levers one is arranged in the groove of sliding bar by playing frame pole thread spindle bottom, and another is fixed on desktop support by axle.

Also comprise: be separately fixed at two connecting plates on two desktop supports, described two desktop supports and two connecting plates form a rectangular recess, and described leading screw and the second motor are all positioned at rectangular recess and second handle is positioned at connecting plate outside.

Described intelligence control system adopts high performance STM32 single-chip microcomputer, carries LCDs control panel.

The excursion at the angle of inclination of described desktop is 0 °～60 °.

Described locating piece is fixed on the inner side of a table leg in two table legs on same base and near chain, a joint of described chain is fixed on table leg by locating piece.

The beneficial effects of the utility model are:

1, elevating mechanism, makes desk table body move along fixing point by chain drive, realizes desk table body integral elevating to adapt to different height crowds, simple to operation, time saving and energy saving.

2, change of pitch angle mechanism, the extensional process that stretches assembly by lead screw transmission and rhombus regulates the change of pitch angle of desktop, thereby adapts to different drawing visual angle, increases drawing comfort level, easy and simple to handle, make drawing course more efficient, comfortable, simple, save manpower and time.

3, newly-increased horizontal table, is conducive to drawing instrument and other article and collects.

4, the interpolation of desktop tool chi make to draw convenient, accuracy promote.

5, desk table body lifting distance, inclination angle of desktop can manually have been controlled according to user's demand, or automatically complete by intelligence control system, really realize the Manual-automatic integrated of drawing desk, embody hommization, personalization, met the requirement of different users to desktop and overall desk height.

6, the utility model uses Human Engineering Principle, utilize change of pitch angle mechanism, elevating mechanism and intelligence control system to realize desk integral elevating and desktop inclination, draw convenient, stable, improve drawing quality, the utility model has solved classroom can not offer the problem of drawing class, the student who more learns drawing student provides good plotting equipment, and brings great convenience to drawing teaching.

7, the utility model performance is good, efficiency is high, is easily accepted by student, and user is many, and the student of annual newly-increased study Drawing course is approximately 400,000 person-times, therefore the utlity model has boundless application market and high promotional value.

Brief description of the drawings

Fig. 1 is the perspective view of Manual-automatic integrated multifunctional drawing desk of the present utility model.

Fig. 2 be Manual-automatic integrated multifunctional drawing desk of the present utility model front view.

Fig. 3 is the left view of the desk of Manual-automatic integrated multifunctional drawing shown in Fig. 2.

Fig. 4 is the top view of the desk of Manual-automatic integrated multifunctional drawing shown in Fig. 2.

Fig. 5 is the perspective view of elevating mechanism.

Fig. 6 is the structural representation of table leg.

Fig. 7 is the structural representation of cage plate, wherein, the front view that Fig. 7 a is cage plate, Fig. 7 b is the left view of cage plate shown in Fig. 7 a, Fig. 7 c is the top view of cage plate shown in Fig. 7 a.

Fig. 8 is the structural representation of locating piece.

In figure: 1, base, 2, table leg, 3, sprocket wheel, 4, locating piece, 5, cage plate, 6, the first stiffener, 7, the second stiffener, 8, sprocket shaft, 9, packing ring, 10, key, 11, chain, 12, major axis, 13, major axis bearing, 14, slider bar, 15, support, 16, worm gear, 17, worm screw, 18, first handle, 19, the first motor, 20, motor support plate, 21, base plate, 22, desktop support, 23, connecting plate, 24, sliding bar, 25, second handle, 26, leading screw, 27, the second motor, 28, play frame pole thread spindle, 29, rhombus stretches assembly, 30, roller, 31, guide rail, 32, desktop, 33, workbench, 34, interim spillikin, 35, telescopic component, 36, tool ruler, 37, intelligence control system.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 1, Manual-automatic integrated multifunctional drawing desk of the present utility model, comprising: two bases 1, four table legs 2, support 15, base plate 21, two desktop supports 22, two connecting plates 23, desktop 32, two workbench 33, interim spillikin 34, telescopic component 35, tool ruler 35, intelligence control system 37, elevating mechanism, change of pitch angle mechanism.

As shown in Figure 6, table leg 2 is hollow square tube, and one end is with fixed installation hole, and the other end is with U-lag.As shown in Figure 1, two table legs 2 are arranged on a base 1, another two table legs 2 are arranged on another base 1, and the fixed installation nose end of table leg 2 stretches in the square installing hole of base 1 and fixes by screw, between two table legs 2 on same base 1, leaves certain distance.As shown in Figure 5, support 15 comprises two parts (having omitted a wherein part in Fig. 5), two parts are welded in turn by three hollow square tubes, the two ends of a part are separately fixed at upper end one side of two cage plates 5, and the two ends of another part are separately fixed at the upper end opposite side of two cage plates 5.

As shown in Figure 5, elevating mechanism, comprises motor support plate 20, the first motor 19, first handle 18, worm screw 17, worm gear 16, eight slider bar 14, two major axis bearings 13, major axis 12, two chains 11, two keys 10, two packing rings 9, two sprocket shafts 8, two the second stiffeners 7, two the first stiffeners 6, two cage plates 5, two locating pieces 4 and two sprocket wheels 3.Motor support plate 20 two ends are arranged on support 15, and worm screw 17 one end are fixed with first handle 18, and the other end is electrically connected with the first motor 19, and worm screw 17, first handle 18 and the first motor 19 entirety are fixed on motor support plate 20, worm gear 16 engages each other with worm screw 17, and worm gear 16 is sleeved on major axis 12, a cage plate 5 is sleeved on two table legs 2 that are positioned on same base 1, as Fig. 7 a, 7b, shown in 7c, the upper end of cage plate 5 is provided with the installing hole that major axis 12 is installed, both sides, lower end are provided with outstanding arcuate structure, major axis 12 two ends put in respectively in the upper end installing hole of two cage plates 5, major axis bearing 13 is sleeved on major axis 12 two ends and is fixed on cage plate 5 outsides (in order to demonstrate elevating mechanism, Fig. 1, Fig. 2, in Fig. 5, omit a cage plate 5), sprocket wheel 3, chain 11, the second stiffener 7, sprocket shaft 8, packing ring 9 is all between two table legs 2 on same base 1 and be positioned at the inside of cage plate 5, two sprocket wheels 3 are set in major axis 12 two ends, as shown in Figure 2, between sprocket wheel 3 and major axis 12, key 10 is installed, be used for connecting sprocket wheel 3 and major axis 12, chain 11 upper ends are sleeved on sprocket wheel 3, lower end is sleeved on sprocket shaft 8, cage plate 5 outsides are stretched out at the two ends of sprocket shaft 8, sprocket shaft 8 one end are fixed on cage plate 5 by the first stiffener 6, the other end is fixed by screws on the second stiffener 7 and stretches out cage plate 5 outsides, the first stiffener 6 is fixed on cage plate 5 outsides, the second stiffener 7 activities are placed on cage plate 5 inner sides and its two ends are connected with the inner slide of two table legs 2, on position in the inner side of a table leg 2 near chain 11, be provided with locating piece 4, as shown in Figure 8, on locating piece 4, be provided with installing hole, chain 11 joint is wherein fixed on table leg 2 by locating piece 4, slider bar 14 has eight, at the two ends up and down of each table leg 2, two slider bar 14 are installed, the slider bar 14 of lower end be arranged in the arcuate structure of cage plate 5 and with the outside of table leg 2 be the relation of being slidably connected, U-lag end and slider bar 14 that the slider bar 14 of upper end is arranged on table leg 2 are the relation of being slidably connected with cage plate 5 inner sides.Rotate first handle 18, worm screw 17 drives worm gear 16 to rotate, and major axis 12 rotates thereupon, by the effect of major axis bearing 13 and sprocket wheel 3, chain 11 rotates with major axis 12, due to the effect of locating piece 4, chain 11 moves up, thereby drives sprocket shaft 8 to move up, sprocket shaft 8 is fixed relationship with cage plate 5, therefore, drive cage plate 5 along with slider bar 14 moves up along table leg 2 outsides by sprocket shaft 8, thereby realize the lifting of desk entirety.The utility model can be adjusted according to user's height the height of desktop 32, manual rotation first handle 18 or by the intelligence control system 37 on desktop 32, worm screw 17 is rotated to realize desk integral elevating.Packing ring 9 is arranged on sprocket shaft 8 and is positioned at the second stiffener 7 inner sides, and effect is: increase the Area of bearing of coupled to reduce the pressure of contact position and to avoid fastening nut.

As shown in Figure 1, base plate 21 is fixed in the plane being formed by support 15 upper surfaces and cage plate 5 upper surfaces, as shown in Figure 3, two desktop supports 22 are arranged on respectively the two ends of base plate 21 and lay respectively at the upper end of two cage plates 5, in desktop support 22, be provided with slip plane and for guiding the square opening of workbench 33 horizontal movements, two connecting plates 23 are fixed by screws in respectively on two desktop supports 22, form a rectangular recess by two desktop supports 22 and two connecting plates 23.The lower surface edge of desktop 32 is with two bulge-structures, and bulge-structure is arranged on by rotating shaft on one end of desktop support 22, and desktop 32 can be realized angle by the effect of rotating shaft.

As shown in Figure 1, change of pitch angle mechanism, comprise sliding bar 24, second handle 25, leading screw 26, the second motor 27, two play frame pole thread spindle 28, two rhombuses and stretch assembly 29, two rollers 30 and two guide rails 31.One end of leading screw 26 is provided with second handle 25, the other end is electrically connected with the second motor 27, described leading screw 26 and the second motor 27 are all positioned at rectangular recess and second handle 25 is positioned at connecting plate 23 outsides, sliding bar 24 is screw pair annexation with leading screw 26, sliding bar 24 two ends are arranged in the slip plane of desktop support 22 and can do straight reciprocating motion in slip planes, and two guide rails 31 are arranged on the lower surface of desktop 32.Two rhombuses stretch assembly 29 and are arranged on respectively on two desktop supports 22, rhombus stretches assembly 29 and is made up of multiple lifting levers and little axle, lifting lever end is topmost provided with roller 30, roller 30 is arranged in the chute of guide rail 31 simultaneously, one in two lifting levers is bottom arranged in the groove of sliding bar 24 by playing frame pole thread spindle 28, and another is fixed on desktop support 22 by axle.Rotate second handle 25, drive leading screw 26 to rotate, make sliding bar 24 do straight reciprocating motion in the sliding tray of desktop support 22 by leading screw 26 and the worm drive of sliding bar 24, the each assembly that simultaneously makes the rhombus hinged with sliding bar 24 stretch assembly 29 relatively rotates, thereby is slided desktop 32 is changed in certain angle in the chute of guide rail 31 by roller 30.

The excursion at the angle of inclination of desktop 32 is 0 °～60 °, as design subject, mapping have several modes, so angle of inclination have or not and size be necessary, it is actual in the time that desktop 32 tilts 12 ° and 24 °, user's posture is little compared with the mobile range of natural trunk, relative with the horizontal scope of operation, and tired sense of discomfort can reduce, drawing table desktop 32 generally tilts, if desktop 32 levels or too low, because head inclination angle can not exceed 30 °, the just necessary health of user is anteflexion.In order to adapt to different users, desktop 32 should be designed to adjustable, and angle of inclination is 0 °～60 °, has increased the stability of desktop 32, in user's optimal viewing angle district class, reduces the human eye fatigue that excessively overuses.

As shown in Figure 1, two workbench 33 are separately fixed at telescopic component 35 two ends, and these two workbench 33 lay respectively in the square opening of two desktop supports 22, workbench 33 can be extracted out in square opening, telescopic component 35 is made up of multiple identical connecting rods and connecting axle, and the centre of telescopic component 35 is fixed on base plate 21 by interim spillikin 34, in the time that the angle of inclination of desktop 32 changes, effect by telescopic component 35 and interim spillikin 34 makes workbench 33 still keep level, can place drawing instrument, water tumbler etc., be beneficial to the finishing collecting of article, promote drawing efficiency.

As shown in Figure 4, tool ruler 36 and intelligence control system 37 are installed on the upper surface of desktop 32, desktop 32 surroundings have 3mm groove, groove can be engaged in groove with tool ruler 36 one end bossings and slide, tool ruler 36 makes drawing efficiency higher, the more precision of drawing, realize the function of T-square, make to draw more accurate, greatly promoted drawing efficiency.

As shown in Figure 4, intelligence control system 37 is electrically connected with the first motor 19 and the second motor 27 respectively, send corner and the rotating of specific different time length electric impulse signal control the first motor 19 and the second motor 27 by intelligence control system 37, drive worm screw 17 and leading screw 26 to rotate simultaneously, realize the tilt variation of desk integral elevating and desktop 32.Intelligence control system 37 adopts high performance STM32 single-chip microcomputer, carry LCDs control panel, have " memory function " simultaneously, can after using for the first time, remember this student number corresponding required table height and desktop inclination angle, complete the calculating of electric impulse signal parameters in single-chip microcomputer inside, regulate thereby carry out intelligence, make to the adjusting at table height, desktop inclination angle precisely more simultaneously, more laborsaving when use.

In present embodiment, table leg 2 adopts 45# steel to make.

In present embodiment, the first motor 19 and the second motor 27 adopt respectively 57BYGH803 type stepper motor and 86 type stepper motors.The rated power of 57BYGH803 type stepper motor is 10～50W, and rated current is 1.5A, and rated voltage is 12～48V, and nominal torque is 1.4NM, and maximum (top) speed is 1000rpm.86 type stepper motor rated power are 90W, and rated current is 1.0～4.2A, and rated voltage is 4～50V, quiet torque 12.0NM, and maximum (top) speed is 1000rpm.

Claims (10)

1. Manual-automatic integrated multifunctional drawing desk, comprises desktop (32) and two bases (1), and two table legs (2) are installed on each base (1); It is characterized in that, also comprise:

Elevating mechanism, comprise on two table legs (2) on same base (1) and be set with a cage plate (5), two ends are arranged on respectively the major axis (12) of two cage plates (5) upper end by major axis bearing (13), be sleeved on the worm gear (16) on major axis (12), with worm gear (16) worm screw (17) that is engagement, be separately fixed at first handle (18) and first motor (19) at worm screw (17) two ends, be fixed on support (15) upper for the motor support plate (20) of the first motor (19) is installed, be sleeved on two sprocket wheels (3) at major axis (12) two ends, be fixed on the key (10) between sprocket wheel (3) and major axis (12), each cage plate (5) lower end is fixed with a sprocket shaft (8), upper and lower side is set on sprocket wheel (3) and sprocket shaft (8) and is fixed on the chain (11) on a table leg (2) by locating piece (4), the upper and lower side in each table leg (2) outside is respectively arranged with a slider bar (14), upper end slider bar (14) is arranged on table leg (2) above and is connected with cage plate (5) inner slide, and lower end slider bar (14) is arranged on cage plate (5) above and is dynamically connected with table leg (2) outside slip,

Be fixed on support (15) on cage plate (5), be fixed on base plate (21) in the plane being formed by support (15) upper surface and cage plate (5) upper surface, be arranged on base plate (21) two ends respectively and lay respectively at two desktop supports (22) of two cage plates (5) upper end, described desktop (32) is arranged on desktop support (22) by rotating shaft;

Change of pitch angle mechanism, comprise: two ends are arranged in the slip plane of desktop support (22) and in slip plane, can do the sliding bar (24) of straight reciprocating motion, be connected by screw pair with sliding bar (24) and be positioned at the leading screw (26) on base plate (21), be separately fixed at leading screw (26) two ends and be positioned at second handle (25) and the second motor (27) on base plate (21), two rhombuses that are arranged on respectively on two desktop supports (22) stretch assembly (29), be arranged on two guide rails (31) of desktop (32) lower surface, be arranged on respectively two rollers (30) that two rhombuses stretch assembly (29) upper end and can slide in the chute of guide rail (31),

The intelligence control system (37) that is arranged on desktop (32) upper surface and is electrically connected with the first motor (19) and the second motor (27) respectively, send corner and the rotating of specific different time length electric impulse signal control the first motor (19) and the second motor (27) by intelligence control system (37), drive worm screw (17) and leading screw (26) to rotate simultaneously, realize desk integral elevating and desktop (32) tilt variation.

2. Manual-automatic integrated multifunctional drawing desk according to claim 1, it is characterized in that, also comprise: be fixed on the telescopic component (35) on base plate (21) by interim spillikin (34), described telescopic component (35) is by multiple connecting rods and connecting axle forms and temporarily flexible to two ends centered by spillikin (34); Be separately fixed at two workbench (33) at telescopic component (35) two ends, these two workbench (33) lay respectively in the square opening of two desktop supports (22) and can extract out thus.

3. Manual-automatic integrated multifunctional drawing desk according to claim 1, is characterized in that, also comprises: the tool ruler (36) that is arranged on desktop (32) upper surface; Described tool ruler (36) one end bossing coordinates and can in groove, slide with the 3mm groove of desktop (32) surrounding.

4. Manual-automatic integrated multifunctional drawing desk according to claim 1, it is characterized in that, described elevating mechanism also comprises: the second stiffener (7) that the first stiffener (6), activity are placed on inside cage plate (5) and its two ends are connected with the inner slide of two table legs (2) that is fixed on cage plate (5) outside; Sprocket shaft (8) one end is fixed on cage plate (5) outside by the first stiffener (6), and the other end is fixed on the second stiffener (7) above and stretches out cage plate (5) outside.

5. Manual-automatic integrated multifunctional drawing desk according to claim 4, is characterized in that, also comprises: be arranged on sprocket shaft (8) upper and be positioned at the packing ring (9) of the second stiffener (7) inner side.

6. Manual-automatic integrated multifunctional drawing desk according to claim 1, it is characterized in that, described rhombus stretches assembly (29) and is made up of multiple lifting levers and little axle, roller (30) is arranged on lifting lever end topmost, in two lifting levers one is arranged in the groove of sliding bar (24) by playing frame pole thread spindle (28) bottom, and another is fixed on desktop support (22) by axle.

7. Manual-automatic integrated multifunctional drawing desk according to claim 1, it is characterized in that, also comprise: be separately fixed at two connecting plates (23) on two desktop supports (22), described two desktop supports (22) and two connecting plates (23) form a rectangular recess, and described leading screw (26) and the second motor (27) are all positioned at rectangular recess and second handle (25) is positioned at connecting plate (23) outside.

8. Manual-automatic integrated multifunctional drawing desk according to claim 1, is characterized in that, described intelligence control system (37) adopts high performance STM32 single-chip microcomputer, carries LCDs control panel.

9. Manual-automatic integrated multifunctional drawing desk according to claim 1, is characterized in that, the excursion at the angle of inclination of described desktop (32) is 0 °～60 °.

10. Manual-automatic integrated multifunctional drawing desk according to claim 1, it is characterized in that, described locating piece (4) is fixed on the inner side of the table leg (2) in two table legs (2) on same base (1) and near chain (11), a joint of described chain (11) is fixed on table leg (2) by locating piece (4).