The invention provides a clamping device for fixing table lamp, anti-myopia device and other devices on the edge of the table. The rear plate 1 and the front plate 17 of the shell are welded together by ultrasonic wave, and the lower part of the shell is connected with the upper splint 2; the telescopic rod 4 is installed in the guide groove 18 with a downward opening in the shell, and the lower end of the telescopic rod 4 is exposed outside the shell and connected with the lower splint 3. The telescopic rod 4 can slide up and down and keep the lower splint 3 opposite to the upper splint 2. The threaded rod 5 is positioned in the shell through the upper and lower end rotating axles, and the backward elevation of the telescopic rod 4 Surrounded by 1/2-1/4, the width of the envelope is not threaded. The other width and the thread on the expansion rod constitute a pair of threads. Thread lead is 1.05-1.5 times the pitch. When the width of screw rod 5 without thread is directly opposite to the upper thread of the telescopic rod 12, the telescopic rod 4 can slide freely up and down, and the lower splint 3 can quickly approach the lower edge from the lower edge of the table up to the lower edge. At this time, the knob 10 connected to the upper axis 16 of the screw rod is rotated, the upper thread 12 of the telescopic rod is screwed together by the upper thread 6 of the screw rod, the telescopic rod 4 is further lifted up, and the lower splint 3 is pressed upward to the table top. Compared with similar products fastened by bolts, the clamping device of the invention is faster, the edge of the clamping table is firmer and occupies less space.
【技术实现步骤摘要】
一种夹固装置
本专利技术涉及一种将台灯、读书架、防近视架等器具夹固于桌沿的装置。
技术介绍
现有技术的类似装置多是横“U”形结构,通过旋紧穿过其一侧夹板的螺栓来夹紧桌沿,将连于此装置上的器具固定于桌沿。存在的问题是,为了满足不同的夹持厚度,做的往往比较大,再加上外露的螺栓尾部,更是占有较大空间;由于螺栓晃动,夹比较薄的桌面时其稳定性会降低,而且操作繁琐。
技术实现思路
本专利技术的目的是提供一种操作快捷、节省空间、夹固牢稳的夹固装置。为实现上述目的,本专利技术由壳体、连于壳体下部的上夹板、伸缩杆、连于伸缩杆下部的下夹板以及压紧结构组成。所述壳体由壳体前片和壳体后片通过焊接或者螺丝紧固而成,其内部有纵向导槽并向下开口,伸缩杆装于导槽内但其下端露于壳体之外并连有下夹板,伸缩杆可上下自由滑动并保持下夹板与上夹板相对。需要被本装置固定的器具,与壳体合为一体或被固定于壳体或与壳体活动连接。所述压紧结构可以是螺纹杆,其上下端有转轴被壳体后片支撑定位(支撑点还有轴瓦的作用),其中一端的转轴外侧连有旋钮,此螺纹杆被伸缩杆的后立面1/4~1/2包围并与后者组成螺纹副,但不同于通常的螺纹副:1、螺纹杆上被包围的幅宽无螺纹,即此幅宽的螺纹位置处是空,其它幅宽有螺纹;2、螺纹的导程为1.05~1.5倍螺距(由于螺纹是断开的,故S=nP在n不是正整数时,也可以实现;考虑到间隙和上下夹板上防滑软垫的弹性必须多出来一些富余量)。当螺纹杆无螺纹幅面正对向伸缩杆上螺纹时,伸缩杆可以上下自由滑动,在使用本专利技术产品时,上夹板置于被夹桌沿的桌面,下夹板可快速从桌沿的下面向上接近下桌面,然后通过旋 ...
【技术保护点】
1.一种将台灯、读书架、防近视架等器具固定于桌沿的夹固装置,其特征是:壳体前片(17)、壳体后片(1)被焊接或螺丝紧固为一体,其下部连有上夹板(2),壳体内有向下开口的导槽(18);伸缩杆(4)装于导槽(18)内,其下端露于壳体外并连有下夹板(3),伸缩杆(4)可上下滑动并保持下夹板(3)与上夹板(2)上下相对;螺纹杆(5)位于壳体内,其上下端分别有转轴(15)、(16)被壳体后片支撑定位,旋钮(10)位于壳体外并与一个转轴相连,伸缩杆(4)的向后立面有伸缩杆上螺纹(12)将螺纹杆(4)1/4~1/2包围并组成螺纹副,螺纹杆(5)上被包围的幅宽无螺纹,其余幅宽为螺纹杆上螺纹(6),其导程为1.05~1.5倍螺距;螺纹杆(5)上无螺纹的幅面与伸缩杆上螺纹(12)正对时,伸缩杆(4)可上下滑动。
【技术特征摘要】
1.一种将台灯、读书架、防近视架等器具固定于桌沿的夹固装置,其特征是:壳体前片(17)、壳体后片(1)被焊接或螺丝紧固为一体,其下部连有上夹板(2),壳体内有向下开口的导槽(18);伸缩杆(4)装于导槽(18)内,其下端露于壳体外并连有下夹板(3),伸缩杆(4)可上下滑动并保持下夹板(3)与上夹板(2)上下相对;螺纹杆(5)位于壳体内,其上下端分别有转轴(15)、(16)被壳体后片支撑定位,旋钮(10)位于壳体外并与一个转轴相连,伸缩杆(4)的向后立面有伸缩杆上螺纹(12)将螺纹杆(4)1/4~1/2包围并组成螺纹副,螺纹杆(5)上被包围的幅宽无螺纹,其余幅宽为螺纹杆上螺纹(6),其导程为1.05~1.5倍螺距;螺纹杆(5)上无螺纹的幅面与伸缩杆上螺纹(12)正对时,伸缩杆(4)可上下滑动。2.根据权利要求1所述的夹固装置,其特征是:所述螺纹杆上螺纹(6)的较低端端面过其底边中点的直径延长线,且与过此底边上端的螺线的切线成30°~70°夹角;伸缩杆上螺纹(12)较高端端面在上述端面与之相接触的位置时,呈与后者即上述端面平行状。3.一种将台...
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。