用于折叠自行车前后车架的锁紧装置 Locking device for folding bicycle front and rear frames
本发明的技术领域 TECHNICAL FIELD OF THE INVENTION
本发明涉及一种折叠自行车,特别是涉及一种用于前车架和后 车架的脚踏锁紧装置。 背景技术 The invention relates to a folding bicycle, in particular to a pedal locking device for a front frame and a rear frame. Background technique
折叠自行车因要进行收折,车架一般都是由可分离的前后车架 构成, 前后车架通常利用螺栓或连接盒进行连接, 在锁紧或开启时 要用工具连接或解开锁紧, 因此, 使装卸费时费力, 而且使用不方 便。 发明概要 Folding bicycles need to be folded. The frames are generally composed of separable front and rear frames. The front and rear frames are usually connected by bolts or connection boxes. When locking or opening, they need to be connected or unlocked with tools. Therefore, It takes time and effort to load and unload, and is inconvenient to use. Summary of invention
本发明的目的是提供一种利用杠杆原理,以杠杆带动锁紧销移 动以便打开前后车架的锁紧装置。 本发明的进一步的目的是提供一种用于折叠自行车前后车架 的连接牢固, 而且装卸方便的锁紧装置。 用于实现本发明目的的锁紧装置,包括一个与前车架连接的前 连接件、 一个与后车架连接的后连接件和一枢接前后连接件的枢 轴, 后连接件是一个一端封闭的锁紧管, 在管内安装一个锁紧销, 在锁紧销和锁紧管的底端安装一个弹簧,在前连接件上开有一个可 供锁紧销***的卡口, 在锁紧销上安装一个带动其移动的螺钉, 锁 紧装置还包括一个固定在自行车中轴上的轴套、一个安装在轴套内 的转轴和一个安装在转轴上的蹬杆, 在蹬杆的下端安装一个踏板, 在蹬杆的上端设有一个槽, 螺钉通过该槽与锁紧销连接。 An object of the present invention is to provide a locking device that utilizes the principle of a lever to move a locking pin with a lever to open a front and rear frame. A further object of the present invention is to provide a locking device for folding the front and rear frames of a bicycle, which is securely connected and easy to detach. The locking device for achieving the purpose of the present invention includes a front connection member connected to the front frame, a rear connection member connected to the rear frame, and a pivot shaft pivotally connecting the front and rear connection members. The rear connection member is one end Closed lock tube, install a lock pin in the tube, install a spring on the lock pin and the bottom end of the lock tube, open a bayonet on the front connector for the lock pin to be inserted, and lock A screw is installed on the pin to drive the movement. The locking device also includes a shaft sleeve fixed on the bicycle's middle shaft, a shaft installed in the shaft sleeve, and a pedal rod mounted on the shaft. The pedal rod is installed at the lower end of the pedal. A pedal is provided with a slot at the upper end of the pedal, and the screw is connected to the locking pin through the slot.
替换页 (细则第 26条)
本发明的进一步解决方案为: Replacement page (Article 26) A further solution of the invention is:
前连接件为槽形架, 锁紧管置于连接件的槽内; The front connecting piece is a trough-shaped frame, and the locking pipe is placed in the groove of the connecting piece;
锁紧管的底端与一枢轴套连接,枢轴套与槽形架通过一个螺栓 铰接; The bottom end of the locking tube is connected with a pivot sleeve, and the pivot sleeve and the trough frame are hinged by a bolt;
锁紧销与卡口相配合的端部为半圓形斜面。 本发明具有连接强度高, 使用方便的特点, 可实现折叠自行车 的快速装卸。 附图简介 The end of the locking pin matching the bayonet is a semi-circular inclined surface. The invention has the characteristics of high connection strength and convenient use, and can realize fast loading and unloading of a folding bicycle. Brief Introduction
下面结合附图对本发明进行详细描述。 图 1是本发明的具有局部剖视的视图; The present invention is described in detail below with reference to the drawings. FIG. 1 is a partially cutaway view of the present invention;
图 2是沿图 1中 A - A剖线的剖视图; FIG. 2 is a sectional view taken along line A-A in FIG. 1; FIG.
图 3是沿图 2中 B - B剖线的剖视图; 3 is a cross-sectional view taken along the line B-B in FIG. 2;
图 4是图 2所示装置在打开时的状态图; 4 is a state diagram of the device shown in FIG. 2 when it is opened;
图 5是图 3所示装置在打开时的状态图。 优选实施例祥述 Fig. 5 is a state diagram of the device shown in Fig. 3 when it is opened. Description of the preferred embodiment
参见图 1 - 3 , 本发明的锁紧装置包括: 一个与自行车前车架 1 连接的前连接件 2、 一个与后车架 7连接的后连接件 3和一枢接前后 连接件的枢轴 12 , 该锁紧装置还包括一个固定在自行车中轴(或称 中接头) 8上的轴套 9、 一个安装在轴套 9内的转轴 14和一个安装在 转轴上的蹬杆 6。 在本发明的实施例中, 该前连接件 2为槽形架,该 枢轴 12为一螺栓, 后连接件 3是一个一端封闭的锁紧管, 在管内安 装一个锁紧销 4, 在锁紧销 4和锁紧管 3的底端安装一个弹簧 1 0 , 锁 紧管 3置于前连接件 2的槽内。在前连接件 2上开有一个可供锁紧销 4 ***的卡口 13 , 在锁紧销 4上安装一个带动其移动的螺钉 5。 在蹬杆 1-3, the locking device of the present invention includes: a front connecting member 2 connected to the front frame 1 of the bicycle; a rear connecting member 3 connected to the rear frame 7; and a pivot shaft pivotally connecting the front and rear connecting members. 12. The locking device further includes a shaft sleeve 9 fixed on a bicycle central shaft (or middle joint) 8, a shaft 14 installed in the shaft sleeve 9, and a pedal rod 6 installed on the shaft. In the embodiment of the present invention, the front connecting member 2 is a trough-shaped frame, the pivot shaft 12 is a bolt, and the rear connecting member 3 is a locking tube closed at one end. A locking pin 4 is installed in the tube. A spring 10 is installed at the bottom end of the fastening pin 4 and the locking pipe 3, and the locking pipe 3 is placed in the groove of the front connecting member 2. A bayonet 13 through which the locking pin 4 can be inserted is opened on the front connecting member 2, and a screw 5 is installed on the locking pin 4 to move the locking pin 4. On the pedal
2 2
替换页 (细则第 26条)
的下端安装一个踏板 15, 在蹬杆的上端设有一个槽 16, 螺钉 5通过 槽 16与锁紧销 4连接。 在转轴 14的外端安装一个定位圈 19。 在前连接件 2上的卡口 13设置在与枢轴 12相对置的一侧, 以便 使锁紧销 4在弹簧 10的作用下***卡口 13, 同时, 在前连接件 2上还 开有便于螺釘 5带动锁紧销 4移动的槽孔 17, 在锁紧管 3上也开有与 槽孔 17相对应的槽孔 18。 为了增加连接强度, 锁紧管 3的底端与一枢轴套 11连接, 枢轴 套 11与槽形架 2通过螺栓 12铰接。 为了便于锁紧销 4在折合自行车时容易滑入卡口 13 , 锁紧销 4 与卡口 13相配合的端部为半圆形斜面 17, 即如图 2所示的锁紧销 4 的端部为半圆形和图 3所示的端部为楔形。 在使用本发明的锁紧装置的折叠自行车中, 后车架管 7在焊接 在中轴 8上时, 其端部最好从中轴向前(从后轮向前轮)伸出一段 距离, 以便安装锁紧装置。 在车架由上管、 下管和立管组成时, 前车架管 1为车架的下管, 该管可以是单管, 也可以是双管。 在车架由下管(或称斜管)和立 管组成时, 前车架管 1为下管或斜管。 参见图 4, 使用时, 用脚踩踏蹬杆 6的踏板 15, 蹬杆 6绕转轴 14 转动, 在蹬杆 6上端的槽 16内的螺钉 5随蹬杆 6的转动而向右移动, 由此使锁紧销 4克服弹簧 10的弹力退出卡口 13, 此时, 若有上管, 其上管的锁紧装置也已打开(图中未示出该锁紧装置, 但要求其在 打开状态时, 本发明的锁紧装置也能打开, 并且上管是绕立管附近 转动, 该装置可以是本申请人于本申请日申请的 "用于折叠自行车 Replacement page (Article 26) A pedal 15 is installed at the lower end, and a slot 16 is provided at the upper end of the pedal, and the screw 5 is connected to the locking pin 4 through the slot 16. A positioning ring 19 is installed on the outer end of the rotating shaft 14. The bayonet 13 on the front connecting piece 2 is provided on the side opposite to the pivot 12 so that the locking pin 4 can be inserted into the bayonet 13 under the action of the spring 10. At the same time, the front connecting piece 2 is also opened. A slot hole 17 which is convenient for the screw 5 to drive the locking pin 4 to move, and a slot hole 18 corresponding to the slot hole 17 is also opened in the locking tube 3. In order to increase the connection strength, the bottom end of the locking tube 3 is connected with a pivot sleeve 11, and the pivot sleeve 11 and the trough frame 2 are hinged by bolts 12. In order to facilitate the locking pin 4 to slide into the bayonet 13 easily when folding the bicycle, the end of the locking pin 4 matching the bayonet 13 is a semi-circular inclined surface 17, that is, the end of the locking pin 4 shown in FIG. 2 The portion is semicircular and the end shown in FIG. 3 is wedge-shaped. In a folding bicycle using the locking device of the present invention, when the rear frame pipe 7 is welded to the center shaft 8, its end portion is preferably extended from the center axis forward (from the rear wheel to the front wheel), so that Install the locking device. When the frame is composed of an upper tube, a lower tube, and a riser, the front frame tube 1 is a lower tube of the frame, and the tube may be a single tube or a double tube. When the frame is composed of a down tube (or inclined tube) and a riser, the front frame tube 1 is a down tube or an inclined tube. Referring to FIG. 4, in use, stepping on the pedal 15 of the pedal lever 6 with the foot, the pedal lever 6 rotates around the rotation shaft 14, and the screw 5 in the groove 16 at the upper end of the pedal lever 6 moves to the right as the pedal lever 6 rotates, thereby Make the locking pin 4 exit the bayonet 13 against the elastic force of the spring 10. At this time, if there is an upper tube, the locking device of the upper tube is also opened (the locking device is not shown in the figure, but it is required to be in the open state) At this time, the locking device of the present invention can also be opened, and the upper tube is rotated around the vicinity of the riser. The device may be "for a folding bicycle" applied by the applicant on the filing date.
3 3
替换页 (细则第 26条)
的车架管转折锁紧装置" 所揭示的装置), 这样, 可将前后车架相 向移动, 即对折前后车架, 见图 5, 前后车架绕枢轴 12转动 180° , 从而实现前后车架的对折。 当要展开车架以准备骑行时, 在开有卡口 13的前连接件 1的端 板压迫锁紧销 4, 使其克服弹簧 10的弹力缩进锁紧管 3内, 锁紧管 3 置于前连接件 2的槽内, 此时, 由于卡口 13对着锁紧销 4, 作用在锁 紧销 4上的压力消除, 锁紧销 4在弹簧 10的作用下向外移动, 重新卡 入卡口 13内, 由此使前后车架在展开位置被锁紧。 本发明不仅限于上述实施例, 显而易见, 在本发明的构思范围 内, 可以作出多种变化。 Replacement page (Article 26) The device disclosed by the "Frame tube turning lock device", so that the front and rear frames can be moved toward each other, that is, the front and rear frames are folded in half, as shown in Figure 5, the front and rear frames are rotated 180 ° about the pivot 12 to realize the front and rear vehicles. When the frame is to be deployed to prepare for riding, the end plate of the front connector 1 with the bayonet 13 is pressed against the locking pin 4 so as to be retracted into the locking tube 3 against the elastic force of the spring 10, The locking pipe 3 is placed in the groove of the front connecting member 2. At this time, since the bayonet 13 faces the locking pin 4, the pressure acting on the locking pin 4 is eliminated, and the locking pin 4 moves under the action of the spring 10. Move outside and snap into the bayonet 13 again, so that the front and rear frames are locked in the deployed position. The present invention is not limited to the above embodiment, and it is obvious that various changes can be made within the scope of the concept of the present invention.
A A
替换页 (细则第 26条)
Replacement page (Article 26)