CN103948241B - Omnibearing movable drawing table - Google Patents
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- CN103948241B CN103948241B CN201410195947.2A CN201410195947A CN103948241B CN 103948241 B CN103948241 B CN 103948241B CN 201410195947 A CN201410195947 A CN 201410195947A CN 103948241 B CN103948241 B CN 103948241B
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Abstract
全方位运动绘图桌,涉及机械设计技术领域,解决了现有常规设计的课桌存在的课桌高度不够、空间不足、机动性差的问题。包括四个面板,桌腿,固定在第一板侧面上且与滑槽滑动连接的三向交接机构,安装在第二板下表面和第三板上表面间的三节轨导轨滑槽滑道,锁定机构,与第三板固连且与第四板滑动相连的360°周向旋转定位机构,多角度倾斜机构,包括带有弧形凹槽的两个第一桌腿和安装在第一桌腿的弧形凹槽内的转动圆弧,桌腿折叠机构,桌面升降机构。本发明可360°周向旋转定位、层叠展开并倾斜适当角度,以满足不同图幅的绘制需求,桌面高度可调节,以满足不同身高的绘图需求,桌腿可折叠,方便放置节省空间,灵活方便可靠。
The all-round motion drawing desk relates to the technical field of mechanical design and solves the problems of insufficient desk height, insufficient space and poor maneuverability existing in conventionally designed desks. It includes four panels, table legs, a three-way transfer mechanism fixed on the side of the first plate and slidingly connected with the chute, a three-section rail guide rail chute slideway installed between the lower surface of the second plate and the upper surface of the third plate, Locking mechanism, 360°circumferential rotation positioning mechanism fixedly connected with the third plate and slidingly connected with the fourth plate, multi-angle tilting mechanism, including two first table legs with arc-shaped grooves and installed on the first table The circular arc of rotation in the arc groove of the legs, the folding mechanism of the table legs, and the lifting mechanism of the desktop. The present invention can be rotated and positioned at 360°, stacked and unfolded and tilted at an appropriate angle to meet the drawing requirements of different map sizes. The height of the desktop can be adjusted to meet the drawing requirements of different heights. The table legs can be folded, which is convenient to place and saves space Convenient and reliable.
Description
技术领域technical field
本发明涉及机械设计技术领域,具体涉及一种全方位运动绘图桌。The invention relates to the technical field of mechanical design, in particular to an omnidirectional motion drawing table.
背景技术Background technique
在大部分学校中,教室中的课桌都是为常规课堂设计而采购和布置的,这虽然符合传统的授课要求及学生的听课需求,但是却没有考虑到某些专业所需的对课桌的特殊需求。高校大学生专业种类繁多,传统的普通课桌已经满足不了学生日常的课程学习和作业,以工科院校为例,在机械绘图课或者工程制图课中需要专业的绘图设备,由此给学生带来诸多不便之处,而大多数学生都是抱着大图板、丁字尺到教室中绘图,图板不仅携带不便,而且在教室中占用空间,而学校教室空间是有限的,一个图板就已经将整张桌子完全占用,大大降低了空间的利用率,为绘图带来了极大的不便;现在很多课桌并没有从人机工程角度来设计,比如桌面与水平面的夹角为0度,这样长时间水平作图与平常上课时,低头过于低或低头时间过长,会影响视力以及导致颈椎问题,危害学生的健康,同时,课桌不可移动,不能方便的移动课桌。In most schools, the desks in classrooms are purchased and arranged for regular classroom design. Although this meets the traditional teaching requirements and students' listening needs, it does not take into account the need for desks required by some majors. special needs. College students have a wide variety of majors, and traditional ordinary desks can no longer satisfy students' daily course study and homework. Taking engineering colleges as an example, professional drawing equipment is needed in mechanical drawing courses or engineering drawing courses, which brings students There are many inconveniences, and most students carry large drawing boards and T-squares to draw in the classroom. The drawing board is not only inconvenient to carry, but also takes up space in the classroom, and the space of the school classroom is limited, a drawing board is already Occupying the entire desk greatly reduces the utilization rate of space and brings great inconvenience to drawing; many desks are not designed from the perspective of ergonomics, such as the angle between the desktop and the horizontal plane is 0 degrees, Such a long-term horizontal drawing and normal class time, bowing the head too low or bowing the head for too long will affect vision and cause cervical spine problems, endangering the health of students. At the same time, the desk cannot be moved and cannot be moved conveniently.
发明内容Contents of the invention
为了解决现有采用常规设计的课桌存在的课桌高度不够、空间不足、机动性差的问题,本发明提供一种灵活、可360°周向旋转定位、桌面可层叠展开、桌面可倾斜适当角度、桌面高度可调节、桌腿可折叠的全方位运动绘图桌,以其灵活的转动方式,充分利用空间,使绘图更加方便可靠,提高绘图效率。In order to solve the problems of insufficient desk height, insufficient space, and poor maneuverability of existing conventionally designed desks, the present invention provides a flexible desk that can be rotated and positioned 360° in the circumferential direction, the desktop can be stacked and unfolded, and the desktop can be tilted at an appropriate angle. , The all-round motion drawing table with adjustable table height and foldable table legs, with its flexible rotation method, makes full use of the space, makes drawing more convenient and reliable, and improves drawing efficiency.
本发明为解决技术问题所采用的技术方案如下:The technical scheme that the present invention adopts for solving technical problems is as follows:
本发明的全方位运动绘图桌,包括第一板、带滑槽的第二板、第三板和第四板;还包括:The omnidirectional motion drawing table of the present invention comprises a first board, a second board with a chute, a third board and a fourth board; it also includes:
安装在第一板侧面上且与滑槽滑动连接的三向交接机构,推动第一板带动三向交接机构在滑槽中滑动,滑至滑槽的倾斜弧度后继续向下滑动至底端定位后停止,使第一板和第二板的上表面齐平;The three-way handover mechanism installed on the side of the first plate and slidably connected with the chute pushes the first plate to drive the three-way handover mechanism to slide in the chute, slides to the inclined arc of the chute, and then continues to slide down to the bottom for positioning After stopping, make the upper surface of the first plate and the second plate flush;
设置在第二板下表面和第三板上表面间的三节轨导轨滑槽滑道;A three-section rail guide rail chute slideway arranged between the lower surface of the second plate and the upper surface of the third plate;
用于第一板和第二板完全展开后的锁定机构;Locking mechanism for fully deployed first and second panels;
安装在第三板和第四板上用于第一板、第二板和第三板整体相对于第四板周向旋转和定位的360°周向旋转定位机构;A 360° circumferential rotation positioning mechanism installed on the third plate and the fourth plate for the overall circumferential rotation and positioning of the first plate, the second plate and the third plate relative to the fourth plate;
安装在第四板上用于第一板、第二板和第三板整体相对于第四板进行升降的桌面升降机构;A desktop lifting mechanism installed on the fourth board for the overall lifting of the first board, the second board and the third board relative to the fourth board;
多角度倾斜机构,包括带有弧形凹槽的两个第一桌腿和安装在第一桌腿的弧形凹槽内的转动圆弧,所述转动圆弧可在弧形凹槽内进行多角度旋转倾斜;The multi-angle tilting mechanism comprises two first table legs with arc grooves and a rotating arc installed in the arc grooves of the first table legs, and the rotating arc can be carried out in the arc grooves Multi-angle rotation and tilt;
桌腿折叠机构,包括安装在第四板下表面的支座、两端分别固定在支座和转动圆弧上的支架、上端与转动圆弧相连且带有多个通孔的第二桌腿、设置在第二桌腿与转动圆弧的交接处的合页、带有多个通孔的第三桌腿,所述第二桌腿和第三桌腿之间通过通孔与连接销的配合固定连接,通过连接销来调节伸缩高度,通过折叠支座使第一桌腿向内折叠,通过折叠合页使第二桌腿和第三桌腿向外折叠。The table leg folding mechanism includes a support installed on the lower surface of the fourth plate, a support whose two ends are respectively fixed on the support and the rotating arc, and the second table leg whose upper end is connected with the rotating arc and has a plurality of through holes , a hinge arranged at the junction of the second table leg and the rotation arc, a third table leg with a plurality of through holes, and the connection between the second table leg and the third table leg is through the through hole and the connecting pin Cooperating with the fixed connection, the telescopic height is adjusted through the connecting pin, the first table leg is folded inward through the folding support, and the second table leg and the third table leg are folded outward through the folding hinge.
所述三向交接机构为两个,分别位于第一板两侧,由一个三角连接和三个三角连接插销组成,三角连接的同一个圆周上设置有三个等角度分布的圆孔,三角连接插销为阶梯式圆柱结构,小圆柱端安装在三角连接的圆孔中,并可以在圆孔中转动,一个三角连接插销的小圆柱端固定在第一板的端部一侧,剩余两个三角连接插销的小圆柱端滑动安装在第二板的滑槽中且可在滑槽中滑动。当未展开时,第一板和第二板处于叠层状态,不用时回拉第一板,三向交接机构可反向滑转。There are two three-way handover mechanisms, located on both sides of the first plate respectively, consisting of a triangular connection and three triangular connection pins, three equiangularly distributed circular holes are arranged on the same circumference of the triangular connection, and the triangular connection pins It is a stepped cylindrical structure, the small cylindrical end is installed in the round hole of the triangular connection, and can rotate in the round hole, the small cylindrical end of a triangular connection pin is fixed on the end side of the first plate, and the remaining two triangular connections The small cylinder end of bolt is slidably installed in the chute of the second plate and can slide in the chute. When not unfolded, the first board and the second board are in a stacked state, and the first board is pulled back when not in use, and the three-way transfer mechanism can slide in reverse.
所述锁定机构包括:固定在第二板下表面边缘一侧的齿条;均固定在第三板侧面上的齿轮和插栓,所述齿轮与齿条啮合,安装在插栓中用于锁住齿轮的定位销;当第一板和第二板完全展开后,同时移动第一板和第二板,齿轮随齿条转动,当第一板和第二板的交接处位于第三板的中间位置时,通过定位销锁定齿轮以锁定第二板与第三板之间的相对位置。The locking mechanism includes: a rack fixed on one side of the edge of the lower surface of the second plate; a gear and a plug both fixed on the side of the third plate, the gear meshing with the rack, installed in the plug for locking Hold the positioning pin of the gear; when the first plate and the second plate are fully unfolded, move the first plate and the second plate at the same time, the gear rotates with the rack, when the junction of the first plate and the second plate is located at the third plate When in the middle position, the gear is locked by the positioning pin to lock the relative position between the second plate and the third plate.
所述360°周向旋转定位机构,包括:上端通过上轴承固定在第三板上的上套筒;与上套筒下端外部通过键连接的套筒连接,所述套筒连接安装在第四板的中心通孔内,上套筒和套筒连接之间可同步周向旋转;通过下轴承套装在套筒连接外部且固定在第四板上表面的下套筒;位于第四板下表面与套筒连接过盈配合的转动圆,所述套筒连接可带动转动圆共同转动;通过笔座固定在第四板下表面的笔杆,套装在笔杆上的第一弹簧,所述笔杆在第一弹簧的弹力作用下可自动锁住转动圆。The 360°circumferential rotation positioning mechanism includes: an upper sleeve whose upper end is fixed on the third plate through an upper bearing; connected with a sleeve connected to the lower end of the upper sleeve through a key, and the sleeve is connected and installed on the fourth In the central through hole of the plate, the upper sleeve and the sleeve connection can rotate synchronously in the circumferential direction; the lower sleeve is fitted outside the sleeve connection and fixed on the upper surface of the fourth plate through the lower bearing; it is located on the lower surface of the fourth plate Connect the rotating circle with an interference fit with the sleeve, and the sleeve connection can drive the rotating circle to rotate together; the pen holder fixed on the lower surface of the fourth plate through the pen holder, the first spring set on the pen holder, the pen holder at the second The rotating circle can be locked automatically under the elastic force of a spring.
所述桌面升降机构包括:通过连杆上支座固定在第三板下表面的连杆,所述连杆下端通过连杆下支座固定在第四板上表面;固定在连杆下支座上的小万向轮,所述小万向轮的轮部与第四板滑动接触;两端分别固定在连杆下支座和下套筒上的第二弹簧;安装在套筒连接的中心通孔内的丝杆,所述丝杆上端与上套筒下端内部通过螺纹配合;套装在丝杆的端部的丝杆螺母;升高时转动丝杆使其在套筒连接中垂直向上移动,带动上套筒和第三板转动,连杆随着第三板转动,此时,第二弹簧拉伸小万向轮支撑第三板平稳上升。The desktop lifting mechanism includes: a connecting rod fixed on the lower surface of the third plate through the upper support of the connecting rod, and the lower end of the connecting rod is fixed on the upper surface of the fourth plate through the lower support of the connecting rod; fixed on the lower support of the connecting rod The small universal wheel on the top, the wheel part of the small universal wheel is in sliding contact with the fourth plate; the two ends are respectively fixed on the second spring on the lower support of the connecting rod and the lower sleeve; installed in the center of the sleeve connection The screw rod in the through hole, the upper end of the screw rod is threadedly matched with the lower end of the upper sleeve; the screw nut is set on the end of the screw rod; when it is raised, the screw rod is rotated to move vertically upward in the sleeve connection , drives the upper sleeve and the third plate to rotate, and the connecting rod rotates with the third plate. At this time, the second spring stretches the small universal wheel to support the third plate to rise steadily.
还包括安装在第三桌腿底部的四个万向轮,用于绘图桌整体移动和位置锁定。It also includes four universal wheels installed at the bottom of the third table leg, which are used for overall movement and position locking of the drafting table.
还包括带有工具箱支架的工具箱,所述工具箱支架安装在第四板的支架滑槽中且在支架滑槽中能滑动,实现工具箱的无声抽拉定位。It also includes a toolbox with a toolbox bracket, the toolbox bracket is installed in the bracket chute of the fourth plate and can slide in the bracket chute, so as to realize the silent drawing and positioning of the toolbox.
所述三节轨导轨滑槽滑道的滑槽安装在第二板的下表面上,三节轨导轨滑槽滑道的滑道安装在第三板的上表面上;当第一板和第二板完全展开后,通过第二板上的滑槽与第三板上的滑道配合可以使第二板相对于第三板移动,再通过锁定机构锁定第二板与第三板之间的相对位置达到平衡重心、避免面板倾斜的作用,增加了移动的平稳性。The chute of the three-section rail guide rail chute slideway is installed on the lower surface of the second plate, and the slideway of the three-section rail guide rail chute slideway is installed on the upper surface of the third plate; when the first plate and the second plate After fully unfolded, the second plate can move relative to the third plate through the cooperation of the chute on the second plate and the slideway on the third plate, and then the relative position between the second plate and the third plate can be locked by the locking mechanism Achieve the function of balancing the center of gravity and avoiding the tilting of the panel, which increases the stability of the movement.
本发明的有益效果是:The beneficial effects of the present invention are:
1、总体设计构想1. Overall design concept
(1)所设计的绘图桌应满足所有学生的不同需求,即以方便学生为根本目的进行设计,绘图桌应方便学生绘图,减少要变换绘图区域而进行的走动,进而提高绘图效率。(1) The designed drawing table should meet the different needs of all students, that is, the design is designed with the convenience of students as the fundamental purpose. The drawing table should be convenient for students to draw, reduce the walking to change the drawing area, and improve the drawing efficiency.
(2)应满足不同学生绘图姿势对倾斜角度的需求,以符合人体工程学及学生的作图习惯。(2) It should meet the requirements of different students' drawing postures for tilt angles, so as to meet ergonomics and students' drawing habits.
(3)桌面应可以展开,以满足不同篇幅图纸的绘制,同时高度应可调,来适应不同身高学生的使用需求。(3) The desktop should be able to expand to meet the drawing of drawings of different lengths, and the height should be adjustable to meet the needs of students of different heights.
2、创新点2. Innovation points
(1)通过三向交接机构的设计,使第一面板在滑槽中移动并与第二面板完整结合。(1) Through the design of the three-way transfer mechanism, the first panel moves in the chute and is completely combined with the second panel.
(2)通过多角度倾斜机构的设计,桌面通过倾斜支架的多角度旋转倾斜,从而保证绘图的舒适度。(2) Through the design of the multi-angle tilting mechanism, the desktop can be tilted through the multi-angle rotation of the tilting bracket, so as to ensure the comfort of drawing.
(3)通过360°周向旋转定位机构的设计,使桌面整体360°旋转调节,方便变换作图区域,提高作图效率。(3) Through the design of the 360°circumferential rotation and positioning mechanism, the overall 360°rotation of the desktop can be adjusted to facilitate the transformation of the drawing area and improve the drawing efficiency.
3、功能介绍3. Function introduction
(1)桌面可层叠展开,以满足不同图幅的绘制需求。(1) The desktop can be stacked and expanded to meet the drawing needs of different map frames.
(2)桌面可旋转,能方便变换作图区域,减少学生作图时的走动。(2) The desktop can be rotated, which can easily change the drawing area and reduce the movement of students when drawing.
(3)桌面可倾斜适当角度,以顺应作图姿势,保持舒适度。(3) The desktop can be tilted at an appropriate angle to conform to the drawing posture and maintain comfort.
(4)桌面高度可调节,以满足不同身高的绘图需求。(4) The height of the desktop can be adjusted to meet the drawing needs of different heights.
(5)桌腿可折叠,方便放置节省空间,同时安装自锁万向轮,方便移动。(5) The table legs can be folded, which is convenient to place and save space, and self-locking universal wheels are installed at the same time, which is convenient to move.
(6)桌腿安装自锁万向轮,方便移动。(6) The table legs are equipped with self-locking universal wheels for easy movement.
(7)第四面板下表面安装抽拉式工具箱,方便绘图工具的取用。(7) A pull-out toolbox is installed on the lower surface of the fourth panel to facilitate access to drawing tools.
4、推广应用价值4. Promote application value
本发明以其灵活的转动方式,充分利用空间,来一反常规的传统课桌的设计及其使用,采用三向交接机构、360°周向旋转定位机构与多角度倾斜机构实现绘图桌的全方位运动,不仅省去了上课携带图板的繁琐,方便了学生的绘图,而且解决以往课桌空间利用不足、机动性差等弊端,同时大大提高了绘图速度,增强了绘图的舒适度,操作方便,具有很高的推广价值。The present invention makes full use of the space with its flexible rotation mode, which is unconventional in the design and use of the traditional desk, and adopts the three-way handover mechanism, the 360°circumferential rotation positioning mechanism and the multi-angle tilting mechanism to realize the full layout of the drawing desk. Azimuth movement not only saves the trouble of carrying drawing boards in class, but also facilitates students' drawing, and solves the disadvantages of insufficient space utilization and poor mobility of desks in the past. At the same time, it greatly improves the drawing speed, enhances the comfort of drawing, and is easy to operate. , has high promotional value.
附图说明Description of drawings
图1为本发明的全方位运动绘图桌的主视图。Fig. 1 is the front view of the omnidirectional motion drawing table of the present invention.
图2为图1所示的全方位运动绘图桌的仰视图。Fig. 2 is a bottom view of the omnidirectional motion drawing table shown in Fig. 1 .
图3为图1所示的全方位运动绘图桌的右视图。Fig. 3 is a right side view of the omnidirectional motion drawing table shown in Fig. 1 .
图4为三角连接的结构示意图,图4a为三角连接的主视图,图4b为图4a的左视图。Fig. 4 is a schematic structural diagram of a delta connection, Fig. 4a is a front view of a delta connection, and Fig. 4b is a left view of Fig. 4a.
图5为三角连接插销的结构示意图。Fig. 5 is a schematic structural diagram of the triangular connection plug.
图6为转动圆的主视图。Fig. 6 is a front view of the turning circle.
图7为沿图6中A-A向的剖视图。Fig. 7 is a sectional view along the line A-A in Fig. 6 .
图8为笔座的结构示意图,图8a为笔座的主视图,图8b为沿图8a中A-A向的剖视图,图8c为图8a的俯视图。Figure 8 is a schematic structural view of the pen stand, Figure 8a is a front view of the pen stand, Figure 8b is a cross-sectional view along the direction A-A in Figure 8a, and Figure 8c is a top view of Figure 8a.
图9为笔杆的结构示意图。Figure 9 is a schematic structural view of the pen holder.
图10为转动圆弧的结构示意图。Fig. 10 is a structural schematic diagram of a rotating arc.
图11为上套筒的结构示意图,图11a为上套筒的主视图,图11b为图11a的左视图。Fig. 11 is a schematic structural view of the upper sleeve, Fig. 11a is a front view of the upper sleeve, and Fig. 11b is a left side view of Fig. 11a.
图中:1、笔杆,2、笔座,3、第一弹簧,4、滑槽,5、第一板,6、三角连接,7、三角连接插销,8、第二板,9、第三板,10、连杆上支座,11、连杆,12、连杆下支座,13、小万向轮,14、上轴承,15、上套筒,16、键,17、下轴承,18、下套筒,19、转动圆,20、套筒连接,21、丝杆螺母,22、丝杆,23、第二弹簧,24、支座,25、支架,26、转动圆弧,27、第一桌腿,28、合页,29、第二桌腿,30、第三桌腿,31、万向轮,32、齿条,33、齿轮,34、插栓,35、第四板,36、工具箱,37、工具箱支架,38、支架滑槽,39、定位销。In the figure: 1. pen holder, 2. pen holder, 3. first spring, 4. chute, 5. first board, 6. triangle connection, 7. triangle connection pin, 8. second board, 9. third Plate, 10, connecting rod upper support, 11, connecting rod, 12, connecting rod lower support, 13, small universal wheel, 14, upper bearing, 15, upper sleeve, 16, key, 17, lower bearing, 18. Lower sleeve, 19. Rotation circle, 20. Sleeve connection, 21. Screw nut, 22. Screw rod, 23. Second spring, 24. Support, 25. Bracket, 26. Rotation arc, 27 , the first table leg, 28, the hinge, 29, the second table leg, 30, the third table leg, 31, the universal wheel, 32, the rack, 33, the gear, 34, the plug, 35, the fourth board , 36, tool box, 37, tool box bracket, 38, bracket chute, 39, positioning pin.
具体实施方式Detailed ways
以下结合附图对本发明作进一步详细说明。The present invention will be described in further detail below in conjunction with the accompanying drawings.
如图1、图2和图3所示,本发明的全方位运动绘图桌包括:第一板5、第二板8、第三板9、第四板35、万向轮31、工具箱36、工具箱支架37、支架滑槽38、两个三向交接机构、三节轨导轨滑槽滑道、锁定机构、360°周向旋转定位机构、多角度倾斜机构、桌面升降机构、桌腿折叠机构。As shown in Fig. 1, Fig. 2 and Fig. 3, the omnidirectional motion drawing desk of the present invention comprises: first board 5, second board 8, third board 9, fourth board 35, universal wheel 31, toolbox 36 , toolbox bracket 37, bracket chute 38, two three-way handover mechanisms, three-section rail guide rail chute slideway, locking mechanism, 360°circumferential rotation positioning mechanism, multi-angle tilting mechanism, desktop lifting mechanism, table leg folding mechanism .
两个三向交接机构分别位于第一板5的两侧,如图3所示,由一个三角连接6和三个三角连接插销7组成,如图4a和图4b所示,三角连接6的同一个圆周上设置有三个等角度分布的圆孔,如图5所示,三角连接插销7为阶梯式圆柱结构,小圆柱端安装在三角连接6的圆孔中,并可以在圆孔中转动。如图3所示,第二板8的两个对边内侧设置有滑槽4,滑槽4一端带有向下的倾斜弧度,一个三角连接插销7的小圆柱端固定在第一板5的端部一侧,剩余两个三角连接插销7的小圆柱端滑动安装在第二板8的滑槽4中并且可在滑槽4中滑动。当未展开时,第一板5和第二板8处于叠层状态,此时,三向交接机构处于滑槽4的另一端(不带倾斜弧度端),当需要展开时,沿着滑槽4推动第一板5,第一板5受力向前平推展开,同时带动三向交接机构沿着滑槽4的方向滑动,当第一板5平移运动到第二板8的端部一侧后,三向交接机构会继续沿着滑槽4的倾斜弧度向下滑动,滑至底端定位处后停止运动,以保证面板展开后接合的稳定性,此时,第一板5和第二板8的上表面齐平,从而满足大图纸绘图需求。不用时回拉第一板5,三向交接机构可反向滑转,滑槽4上的倾斜弧度有利于第一板5的收回,完成整个面板的展开运动。采用层叠拉伸展开设计,可根据图纸篇幅大小所需而自由展开第一板5,完全展开后可满足大图纸绘图需求。The two three-way handover mechanisms are respectively located on both sides of the first plate 5, as shown in Figure 3, consisting of a triangular connection 6 and three triangular connection pins 7, as shown in Figure 4a and Figure 4b, the same triangle connection 6 A circle is provided with three equiangularly distributed circular holes, as shown in Figure 5, the triangular connection pin 7 is a stepped cylindrical structure, and the small cylindrical end is installed in the circular hole of the triangular connection 6, and can rotate in the circular hole. As shown in Figure 3, two opposite sides of the second plate 8 are provided with chute 4 on the inside, one end of the chute 4 has a downwardly inclined radian, and the small cylinder end of a triangular connection bolt 7 is fixed on the first plate 5. On the end side, the small cylindrical ends of the remaining two triangular connection bolts 7 are slidably installed in the chute 4 of the second plate 8 and can slide in the chute 4 . When not unfolded, the first plate 5 and the second plate 8 are in a stacked state. At this time, the three-way handover mechanism is at the other end of the chute 4 (without the end of the inclined arc), and when it needs to be unfolded, along the chute 4 Push the first plate 5, the first plate 5 is pushed forward and unfolded under force, and at the same time drives the three-way transfer mechanism to slide along the direction of the chute 4, when the first plate 5 moves in translation to the end of the second plate 8 After the side, the three-way handover mechanism will continue to slide down along the inclined arc of the chute 4, and stop after sliding to the bottom positioning position, so as to ensure the stability of the joint after the panels are unfolded. At this time, the first plate 5 and the second plate The upper surface of the second plate 8 is flush, so as to meet the drawing requirements of large drawings. Pull back the first plate 5 when not in use, the three-way handover mechanism can slide in reverse, and the inclined arc on the chute 4 is conducive to the retraction of the first plate 5 to complete the unfolding movement of the entire panel. The layered stretching and unfolding design is adopted, and the first plate 5 can be freely expanded according to the size of the drawing, and can meet the drawing requirements of large drawings after fully unfolding.
如图3所示,锁定机构由齿条32、齿轮33、插栓34和定位销39组成,齿条32固定在第二板8的下表面边缘一侧,齿轮33和插栓34均固定在第三板9的侧面上,齿轮33与齿条32啮合,定位销39活动安装在插栓34中,通过定位销39锁住齿轮33。当第一板5和第二板8完全展开后,同时移动第一板5和第二板8,齿轮33随着齿条32转动,当第一板5和第二板8的交接处位于第三板9的中间位置时,通过定位销39锁住齿轮33,保证齿轮33和齿条32的相对位置不动,以锁定第二板8与第三板9之间的相对位置,可以根据位置需要随时锁定,以满足绘图需求。As shown in Figure 3, the locking mechanism is made up of rack 32, gear 33, plug 34 and positioning pin 39, and rack 32 is fixed on one side of the lower surface edge of second plate 8, and gear 33 and plug 34 are all fixed on On the side of the third plate 9, the gear 33 meshes with the rack 32, and the positioning pin 39 is movably installed in the plug 34, and the gear 33 is locked by the positioning pin 39. After the first plate 5 and the second plate 8 are fully expanded, the first plate 5 and the second plate 8 are moved simultaneously, and the gear 33 rotates with the rack 32. When the intersection of the first plate 5 and the second plate 8 is at the first During the middle position of three plates 9, lock gear 33 by positioning pin 39, guarantee that the relative position of gear 33 and rack 32 does not move, to lock the relative position between second plate 8 and the 3rd plate 9, can according to position Need to be locked at any time to meet drawing needs.
第二板8和第三板9之间设置有三节轨导轨滑槽滑道,三节轨导轨滑槽滑道的滑槽安装在第二板8的下表面上,三节轨导轨滑槽滑道的滑道安装在第三板9的上表面上。当第一板5和第二板8完全展开后,通过第二板8上的滑槽与第三板9上的滑道配合可以使第二板8相对于第三板9移动,再通过锁定机构锁定第二板8与第三板9之间的相对位置达到平衡重心、避免面板倾斜的作用,增加了移动的平稳性。A three-section rail guide rail chute slideway is provided between the second plate 8 and the third plate 9, and the chute of the three-section rail guide rail chute slideway is installed on the lower surface of the second plate 8, and the three-section rail guide rail chute slideway is installed on the lower surface of the second plate 8. Slideways are installed on the upper surface of the third board 9 . When the first plate 5 and the second plate 8 are fully unfolded, the second plate 8 can move relative to the third plate 9 through the cooperation of the chute on the second plate 8 with the slideway on the third plate 9, and then through locking The mechanism locks the relative position between the second plate 8 and the third plate 9 to balance the center of gravity, avoid panel inclination, and increase the stability of movement.
如图1所示,360°周向旋转定位机构包括笔杆1、两个笔座2、第一弹簧3、上轴承14、上套筒15、键16、下轴承17、下套筒18、转动圆19和套筒连接20。上套筒15上端通过上轴承14固定在第三板9上,上套筒15下端外部与套筒连接20上端内部通过键16连接,使上套筒15和套筒连接20之间可以同步周向旋转,下套筒18通过下轴承17套装在套筒连接20外部且下套筒18固定在第四板35的上表面上,套筒连接20安装在第四板35的中心通孔内,转动圆19位于第四板35的下表面上,转动圆19套装在套筒连接20下端外部并与套筒连接20过盈配合,套筒连接20可以带动转动圆19共同转动。转动第三板9,通过上套筒15带动套筒连接20同步转动,通过下轴承17的作用关系,使套筒连接20通过上轴承17相对于下套筒18转动,同时带动转动圆19转动,实现桌面的360°周向旋转。如图2所示,第一弹簧3套装在笔杆1上,笔杆1通过两个笔座2固定在第四板35下表面上。旋转定位与调节过程:常态下,笔杆1在第一弹簧3的弹力作用下自动锁住转动圆19,当需要调节转动角度时,向外拉笔杆1即可解开自锁,调节至需要角度后,松开笔杆1至此完成转向的定位与调节。As shown in Figure 1, the 360 ° circumferential rotation positioning mechanism includes a pen holder 1, two pen holders 2, a first spring 3, an upper bearing 14, an upper sleeve 15, a key 16, a lower bearing 17, a lower sleeve 18, a rotating Circle 19 and sleeve connection 20. The upper end of the upper sleeve 15 is fixed on the third plate 9 through the upper bearing 14, and the outer lower end of the upper sleeve 15 is connected with the inner part of the upper end of the sleeve connection 20 through a key 16, so that the upper sleeve 15 and the sleeve connection 20 can be synchronously cycled. To rotate, the lower sleeve 18 is sleeved on the outside of the sleeve connection 20 through the lower bearing 17 and the lower sleeve 18 is fixed on the upper surface of the fourth plate 35, and the sleeve connection 20 is installed in the central through hole of the fourth plate 35, The rotating circle 19 is located on the lower surface of the fourth plate 35. The rotating circle 19 is set on the outside of the lower end of the sleeve connection 20 and has an interference fit with the sleeve connection 20. The sleeve connection 20 can drive the rotating circle 19 to rotate together. Rotate the third plate 9, the upper sleeve 15 drives the sleeve connection 20 to rotate synchronously, and through the action relationship of the lower bearing 17, the sleeve connection 20 rotates relative to the lower sleeve 18 through the upper bearing 17, and at the same time drives the rotation circle 19 to rotate , to achieve 360 ° circumferential rotation of the desktop. As shown in FIG. 2 , the first spring 3 is set on the penholder 1 , and the penholder 1 is fixed on the lower surface of the fourth plate 35 through two pen holders 2 . Rotation positioning and adjustment process: Under normal conditions, the pen holder 1 automatically locks the rotation circle 19 under the elastic force of the first spring 3. When it is necessary to adjust the rotation angle, pull the pen holder 1 outward to unlock the self-lock and adjust to the desired angle Finally, unclamp the penholder 1 so far to complete the positioning and adjustment of the steering.
桌面升降机构包括两个连杆上支座10、两个连杆11、两个连杆下支座12、两个小万向轮13、丝杆螺母21、丝杆22和两个第二弹簧23。连杆11上端通过连杆上支座10固定在第三板9下表面,连杆11下端通过连杆下支座12固定在第四板35上表面,小万向轮13固定在连杆下支座12上,小万向轮13的轮部与第四板35滑动接触,第二弹簧23一端连接在连杆下支座12上,另一端固定在下套筒18上,丝杆22安装在套筒连接20的中心通孔内,丝杆螺母21套装在丝杆22的端部,丝杆22上端与上套筒15下端内部通过螺纹配合,升高过程中,转动丝杆22使其在套筒连接20中垂直向上移动,带动上套筒15和第三板9转动,连杆11随着第三板9转动,此时,第二弹簧23拉伸小万向轮13支撑第三板9平稳上升,达到要求的高度,小万向轮13可支撑第三板9来保证桌面旋转的稳定性。The desktop lifting mechanism comprises two connecting rod upper supports 10, two connecting rods 11, two connecting rod lower supports 12, two small universal wheels 13, screw nuts 21, screw mandrels 22 and two second springs twenty three. The upper end of the connecting rod 11 is fixed on the lower surface of the third plate 9 through the upper support 10 of the connecting rod, the lower end of the connecting rod 11 is fixed on the upper surface of the fourth plate 35 through the lower support 12 of the connecting rod, and the small universal wheel 13 is fixed under the connecting rod On the support 12, the wheel portion of the small universal wheel 13 is in sliding contact with the fourth plate 35, one end of the second spring 23 is connected to the lower support 12 of the connecting rod, the other end is fixed on the lower sleeve 18, and the screw rod 22 is installed on the In the central through hole of the sleeve connection 20, the screw nut 21 is set on the end of the screw mandrel 22. The upper end of the screw mandrel 22 is threadedly matched with the lower end of the upper sleeve 15. During the lifting process, the screw mandrel 22 is rotated to make it The sleeve connection 20 moves vertically upwards, driving the upper sleeve 15 and the third plate 9 to rotate, and the connecting rod 11 rotates with the third plate 9. At this time, the second spring 23 stretches the small universal wheel 13 to support the third plate 9 rises steadily, reaches the required height, and small universal wheel 13 can support the 3rd board 9 to guarantee the stability of desktop rotation.
桌腿折叠机构包括支座24、支架25、合页28、第二桌腿29和第三桌腿30。如图3所示,第三桌腿30包括两个起支撑作用的长方管和四个短方管,四个短方管上设置有多个通孔,第二桌腿29包括四个带有多个通孔的方管,第二桌腿29的下端伸进第三桌腿30的短方管内,并且通过连接销固定,通过连接销来调节伸缩高度。多角度倾斜机构包括两个转动圆弧26和两个第一桌腿27,四个支座24安装在第四板35的下表面上,每个支座24的下端安装有一个支架25,四个支架25的下端分别安装在一个转动圆弧26的两端,第二桌腿29上端与转动圆弧26相连,合页28设置在第二桌腿29与转动圆弧26的交接处。折叠时,通过折叠支座24使第一桌腿27向内折叠,通过折叠合页28使第二桌腿29和第三桌腿30向外折叠,折叠完毕后,通过伸缩定位将伸缩的桌腿部分退回,节约空间。如图10所示,转动圆弧26上设置有一个大圆弧和一个小圆弧,大圆弧的两端设置有用于安装支架25的安装孔,小圆弧上设置有多个安装孔。两个转动圆弧26的小圆弧分别安装在两个第一桌腿27的弧形凹槽内,并且转动圆弧26可以在第一桌腿27中进行多角度旋转倾斜,桌面多角度倾斜设计满足不同学生绘图姿势对倾斜角度的需求,以符合人体工程学及学生的绘图习惯。The table leg folding mechanism includes a support 24 , a bracket 25 , a hinge 28 , a second table leg 29 and a third table leg 30 . As shown in Figure 3, the 3rd table leg 30 comprises two supporting rectangular tubes and four short square tubes, a plurality of through holes are arranged on the four short square tubes, and the second table leg 29 comprises four strips There is a square pipe with a plurality of through holes, and the lower end of the second table leg 29 stretches in the short square pipe of the third table leg 30, and is fixed by connecting pins, and the telescopic height is regulated by connecting pins. The multi-angle inclination mechanism comprises two rotating arcs 26 and two first table legs 27, four bearings 24 are installed on the lower surface of the fourth plate 35, and a support 25 is installed on the lower end of each bearing 24, four The lower end of a support 25 is installed on the two ends of a rotating arc 26 respectively, and the second table leg 29 upper end links to each other with the rotating arc 26, and the hinge 28 is arranged on the junction of the second table leg 29 and the rotating arc 26. When folding, the first table leg 27 is folded inwardly by the folding support 24, and the second table leg 29 and the third table leg 30 are folded outward by the folding hinge 28. The legs are set back to save space. As shown in FIG. 10 , a large circular arc and a small circular arc are arranged on the rotating arc 26 , mounting holes for installing the bracket 25 are provided at both ends of the large circular arc, and multiple mounting holes are provided on the small circular arc. The small arcs of the two rotating arcs 26 are respectively installed in the arc grooves of the two first table legs 27, and the rotating arcs 26 can be rotated and tilted at multiple angles in the first table legs 27, and the desktop is tilted at multiple angles. The design meets the needs of different students' drawing postures for inclination angles, so as to conform to ergonomics and students' drawing habits.
如图3所示,四个万向轮31安装在第三桌腿30的两个长方管的两端,方便整个桌子的移动,且移动至合适位置时随即锁定。As shown in FIG. 3 , four universal wheels 31 are installed on the two ends of the two rectangular tubes of the third table leg 30 to facilitate the movement of the entire table, and lock immediately when moving to a suitable position.
如图2所示,工具箱36两侧安装有两个工具箱支架37,第四板35下表面上安装有两个支架滑槽38,两个工具箱支架37安装在两个支架滑槽38中,工具箱支架37可在支架滑槽38中滑动,同时带动工具箱36,实现工具箱36的无声抽拉定位功能,安装简易,可根据需要随时抽拉和退回,以方便于学生将绘图工具收纳其中。As shown in Figure 2, two toolbox supports 37 are installed on both sides of the toolbox 36, and two support chutes 38 are installed on the fourth plate 35 lower surface, and two toolbox supports 37 are installed on the two support chutes 38. Among them, the toolbox bracket 37 can slide in the bracket chute 38, and at the same time drive the toolbox 36 to realize the silent pulling and positioning function of the toolbox 36. Tools are stored in it.
本实施方式中,齿条32选用:型号名称:1M直齿条,规格尺寸:1M(型号)*10(齿宽)*10(齿高)*1000(总长),材质:45#钢,单位:mm(毫米)。In this embodiment, the rack 32 is selected: model name: 1M straight rack, specification size: 1M (model)*10 (tooth width)*10 (tooth height)*1000 (total length), material: 45# steel, unit : mm (mm).
本实施方式中,齿轮33选用:直齿轮:1M25齿(标准件),材质:45钢,齿外径:27MM未淬火,厚度:10MM,内孔:5~8MM,净重:0.1KG。In this embodiment, the gear 33 is selected from: spur gear: 1M25 teeth (standard parts), material: 45 steel, tooth outer diameter: 27MM unquenched, thickness: 10MM, inner hole: 5-8MM, net weight: 0.1KG.
本实施方式中,三节轨导轨滑槽滑道采用不锈钢三节轨导轨滑槽,材质:冷轧钢、不锈钢;表面处理:蓝锌、黑色;适用范围:各式抽屉;钢板厚度:1.2mm;特性:静音滑动顺畅;最大承重:45kg。不锈钢三节轨导轨滑槽材质好、不易生锈,而且抽拉顺畅,手感舒适,完全符合要求。In this embodiment, the three-section rail guide rail chute adopts stainless steel three-section rail guide rail chute, material: cold-rolled steel, stainless steel; surface treatment: blue zinc, black; scope of application: all kinds of drawers; steel plate thickness: 1.2mm; characteristics : Silent and smooth sliding; Maximum load: 45kg. The stainless steel three-section rail guide rail chute is made of good material, not easy to rust, and it can be pulled smoothly and feels comfortable, which fully meets the requirements.
本实施方式中,小万向轮13选用:型号(NO):C08-01-25-411,轮径(MM):25(1寸),承载(KG):10,安装高度(MM):37,转动半径(MM):28。In this embodiment, the small universal wheel 13 is selected: model (NO): C08-01-25-411, wheel diameter (MM): 25 (1 inch), load (KG): 10, installation height (MM): 37, turning radius (MM): 28.
本实施方式中,上轴承14和下轴承17均选用:微型深沟球轴承,型号623ZZ,外径10mm,内径3mm,厚度4mm。In this embodiment, both the upper bearing 14 and the lower bearing 17 are selected: miniature deep groove ball bearings, model 623ZZ, with an outer diameter of 10 mm, an inner diameter of 3 mm, and a thickness of 4 mm.
本实施方式中,第一弹簧3和第二弹簧23均选用:YA1X15X20-2LH。In this embodiment, both the first spring 3 and the second spring 23 are selected: YA1X15X20-2LH.
本实施方式中,万向轮31选用:轮片直径40mm,轮宽20mm,安装高度60mm,底板尺寸60*43mm,安装孔距45*30mm,安装孔直径6.3mm,单轮最大承载50公斤。In this embodiment, the universal wheel 31 is selected: the wheel diameter is 40mm, the wheel width is 20mm, the installation height is 60mm, the bottom plate size is 60*43mm, the installation hole distance is 45*30mm, the installation hole diameter is 6.3mm, and the maximum load capacity of a single wheel is 50 kg.
Claims (8)
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CN201410195947.2A CN103948241B (en) | 2014-05-09 | 2014-05-09 | Omnibearing movable drawing table |
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CN106690828B (en) * | 2017-01-21 | 2017-11-03 | 黄河科技学院 | Omnibearing movable drawing table |
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CN108720288A (en) * | 2018-06-02 | 2018-11-02 | 河南豫乾技术转移中心有限公司 | Easel for art design |
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CN110477599B (en) * | 2019-09-06 | 2024-06-25 | 常州市莱特气弹簧有限公司 | Folding table |
CN111407075A (en) * | 2020-03-26 | 2020-07-14 | 安徽文香信息技术有限公司 | Hidden shrink wisdom lectern |
CN112914237B (en) * | 2021-02-26 | 2022-04-08 | 北京中色测绘院有限公司 | Can resist graphic mapping device that bad weather's land planning used |
CN115054091B (en) * | 2022-05-31 | 2023-10-24 | 湖州师范学院 | Variable molding silk bracket for three-dimensional advertisement design |
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US3874309A (en) * | 1974-05-01 | 1975-04-01 | Gary Cowley | Articulated column drafting table |
US4383486A (en) * | 1980-07-28 | 1983-05-17 | Rol-Fol Table, Inc. | Desk for handicapped persons |
CN2269117Y (en) * | 1996-11-21 | 1997-12-03 | 季汝宝 | Universal lift drawing table |
CN201356223Y (en) * | 2009-02-16 | 2009-12-09 | 杜卫民 | Study desk with adjustable height and inclination angle |
CN202604040U (en) * | 2012-09-20 | 2012-12-19 | 无锡商业职业技术学院 | Drawing desk |
CN204245517U (en) * | 2014-05-09 | 2015-04-08 | 长春理工大学 | Omnibearing movable drawing table |
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