The invention provides a teaching board, which includes a base, a support sleeve, a support rod, a cross beam, a adjusting arm and a plate body. The lower surface of the base is provided with a number of universal wheels, the middle of the upper surface is fixed with a supporting sleeve, the support rod is inserted in the support sleeve, and the outer wall of the support rod is uniformly fixed with a number of annular convex bars to support the sleeve. The wall is provided with an installation slot on the wall, and a support is fixed on the outer wall of the support sleeve. The bracket is connected with a gear through a short axis. The gear part is inserted in the installation slot and meshes with the convex bar. The short shaft is also connected with a rocker on the short axis; the rocker is connected with the pin, and the bolt is fixed with a one-way lock and swing arm on the pin. The arm and the rocking link are connected by the pull spring; the pull spring can drive the one-way lock to always close to the gear, and only when the rocking is rocking down, the unidirectional lock can lock the rocking and gear. The invention has the advantages of simple structure, complete functions, convenient and flexible adjustment, long service life, etc. One
【技术实现步骤摘要】
一种教学板
本专利技术涉及一种教学用具,具体涉及一种教学板。
技术介绍
教学板,是从事教育行业书写演示的必要器具,通常教学板是放置在教室中或会议室中的板面,用粉笔或者水性笔书写内容,起到讲解演示的作用。而现有的教学板结构呆板,其位置、高度和倾角都不方便调节,使用不够灵活,难以满足教学需求。
技术实现思路
本专利技术的目的是为了解决现有技术中教学板所存在的缺陷,提供一种位置、高度和倾角都可根据教学需求随时调节的教学板。本专利技术的目的可通过下列技术方案来实现:一种教学板,包括底座、支撑套筒、支撑杆、横梁、调节臂和板体;所述底座的下表面设有若干万向轮,其上表面中部固定有支撑套筒;所述支撑杆插设在支撑套筒内,所述支撑杆的外壁上均匀固定有若干环状凸条,所述支撑套筒的壁面上开设有安装槽,所述支撑套筒的外壁上固定有支架,所述支架上通过短轴转动连接有齿轮,所述齿轮部分插设于安装槽内且与凸条啮合,所述短轴上还转动连接有摇把;所述摇把上转动连接有插销,所述插销上固定连接有单向锁止片和摆臂,所述摆臂与摇把之间通过拉簧相连接;所述拉簧能够驱使单向锁止片始终贴近齿轮,且仅当摇把向下摇动时单向锁止片能够将摇把与齿轮锁止;所述支撑杆上端与横梁中部固定连接,所述横梁与板体的背面通过第一铰接架铰接,所述横梁的上表面设有滑槽,所述滑槽内滑动连接有滑块;所述调节臂的一端与滑块铰接,其另一端与板体的背面通过第二铰接架铰接;所述横梁上沿滑槽方向转动连接有螺纹杆,所述滑块上设有与螺纹杆配合的螺纹孔,所述螺纹杆的一端固定连接有转轮。本教学板的底座下表面设有万向轮,使其能够实现放置位置的随时移动,且移动方 ...
【技术保护点】
1.一种教学板,其特征在于,包括底座(1)、支撑套筒(2)、支撑杆(3)、横梁(4)、调节臂
【技术特征摘要】
1.一种教学板,其特征在于,包括底座(1)、支撑套筒(2)、支撑杆(3)、横梁(4)、调节臂(5)和板体(6);所述底座(1)的下表面设有若干万向轮(11),其上表面中部固定有支撑套筒(2);所述支撑杆(3)插设在支撑套筒(2)内,所述支撑杆(3)的外壁上均匀固定有若干环状凸条(31),所述支撑套筒(2)的壁面上开设有安装槽(21),所述支撑套筒(2)的外壁上固定有支架(22),所述支架(22)上通过短轴(23)转动连接有齿轮(24),所述齿轮(24)部分插设于安装槽(21)内且与凸条(31)啮合,所述短轴(23)上还转动连接有摇把(25);所述摇把(25)上转动连接有插销(26),所述插销(26)上固定连接有单向锁止片(27)和摆臂(28),所述摆臂(28)与摇把(25)之间通过拉簧(29)相连接;所述拉簧(29)能够驱使单向锁止片(27)始终贴近齿轮(24),且仅当摇把(25)向下摇动时单向锁止片(27)能够将摇把(25)与齿轮(24)锁止;所述支撑杆(3)上端与横梁(4...
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