用于折叠自行车的车架管转折锁紧装置 Turning locking device for frame tube of folding bicycle
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自行车车架的 折叠锁紧装置。 背景技术 The invention relates to a folding bicycle, in particular to a folding locking device for a bicycle frame. Background technique
现有折叠自行车的车架折叠一般是采用固定的铰接机构,如台湾 和英国联合生产的布朗登折叠自行车的铰接机构, 这种机构由于要考 虑到折叠后其前后车架要趋于平行, 所以铰接装置的中心线必须在车 架的最外沿, 这样就使铰接装置形成一个明显的突出部分, 因此会影 响车体的外观, 在骑行时可能会挂住裙角或裤角, 而且这种机构本身 不能锁紧。 发明概要 The folding of the existing folding bicycle's frame generally uses a fixed hinge mechanism, such as the hinge mechanism of the Brownden folding bicycle jointly produced by Taiwan and the United Kingdom. This mechanism takes into account that the front and rear frames of the bicycle must be parallel when folded, so The centerline of the articulation device must be at the outermost edge of the frame, so that the articulation device forms a prominent protrusion, which will affect the appearance of the vehicle body. It may catch the skirt or trouser corner when riding, and this This mechanism cannot be locked by itself. Summary of invention
本发明的目的是提供一种用于折叠自行车车架的折叠锁紧机 构。 用于实现本发明目的的一种用于折叠自行车的车架管转折锁紧 装置, 包括一前管和一后管, 前管和后管可相对折叠, 前管和后管分 别与一前管锁紧套和一后管锁紧套螺纹连接, 并且在前管和后管上分 别固定一前套连臂和一后套连臂, 前套连臂和后套连臂通过一铰接轴 相互连接, 在前管的后端固定一锁紧片, 在后管锁紧套内紧靠后管的 前端固定一安装片, 在锁紧片上开有一长孔, 在安装片上固定一沿后 管轴线方向延伸的可插入长孔的 τ形锁紧头, 锁紧头的长度和宽度小 于长孔的长度和宽度, 但锁紧头的长度大于长孔的宽度。 本发明在后管内还设置一限位销, 在安装片上固定一限位挡块, 限位挡块最好为一安装在安装片上的螺钉。 本发明具有外形美观, 结构尺寸小, 连接强度高, 使用方便的特 点。 替换页 (细则第 26条)
附图简介 An object of the present invention is to provide a folding and locking mechanism for folding a bicycle frame. A turning and locking device for a frame tube of a folding bicycle for achieving the purpose of the present invention includes a front tube and a rear tube. The front tube and the rear tube can be relatively folded, and the front tube and the rear tube are respectively connected to a front tube. The locking sleeve is screwed with a rear tube locking sleeve, and a front sleeve connecting arm and a rear sleeve connecting arm are respectively fixed on the front tube and the rear tube. The front sleeve connecting arm and the rear sleeve connecting arm are connected to each other through a hinge shaft A locking piece is fixed at the rear end of the front tube, a mounting piece is fixed in the rear tube locking sleeve close to the front end of the rear tube, a long hole is opened in the locking piece, and a mounting piece is fixed along the axial direction of the rear tube. The extended τ-shaped locking head that can be inserted into a long hole. The length and width of the locking head are smaller than the length and width of the long hole, but the length of the locking head is greater than the width of the long hole. In the present invention, a limit pin is further provided in the rear pipe, and a limit stop is fixed on the mounting piece. The limit stop is preferably a screw installed on the mounting piece. The invention has the characteristics of beautiful appearance, small structure size, high connection strength, and convenient use. Replacement page (Article 26) Brief Introduction
下面结合附图详细描述本发明。 图 1是本发明的锁紧装置在锁紧状态时的垂直剖面图。 The invention is described in detail below with reference to the drawings. FIG. 1 is a vertical sectional view of a locking device of the present invention in a locked state.
图 1是沿图 1中 A - A剖线的剖面图。 FIG. 1 is a cross-sectional view taken along the line A-A in FIG. 1.
图 3是本发明的锁紧装置在可以打开时的水平剖面图。 Fig. 3 is a horizontal sectional view of the locking device of the present invention when it can be opened.
图 4是本发明的锁紧装置在打开状态时的垂直剖面图。 Fig. 4 is a vertical sectional view of the locking device of the present invention in an opened state.
图 5是本发明用于车架上的示意图。 优选实施例祥述 Fig. 5 is a schematic diagram of the present invention applied to a vehicle frame. Description of the preferred embodiment
参见图 1 - 4 , 本发明的一种用于折叠自行车的车架管转折锁紧 装置 20, 包括一前管 1和一后管 2, 前管 1和后管 2可相对折叠, 前 管 1和后管 2分别与一前管锁紧套 3和一后管锁紧套 4螺纹连接, 并 且在前管 1和后管 1上分别固定一前套连臂 5和一后套连臂 6, 前套 连臂 5和后套连臂 6通过一铰接轴 Ί相互连接, 在前管 1的后端固定 一锁紧片 8 , 在后管锁紧套 4内紧靠后管 1的前端固定一安装片 9,在 锁紧片 8上开有一长孔 1 0 , 在安装片 9上固定一沿后管 轴线方向延 伸的可插入长孔 1 0的 T形锁紧头 11 , 锁紧头 1 1的长度和宽度小于长 孔 1 0的长度和宽度, 但锁紧头 1 1的长度大于长孔 1 0的宽度。 为了进行准确的定位, 本发明在后管 2内设置一限位销 1 2, 在 安装片 9上固定一限位挡块 1 3,限位挡块 1 3最好为一安装在安装片 9 上的螺钉。 图 5表示本发明的车架管转折锁紧装置 20用于车架的情况。 在 图 5中,前管 1和后管 2用作车架的上管,前管 1与车架头管 21连接, 后管 2与车架鞍座立管 22连接,车架下管 2 3与后轮架 24的折叠铰接 连接机构 25可以是任何形式, 当然,也可以使用本发明的车架管转折 锁紧装置 20。 本发明使用方法为, 参见图 1和 2 , 当折叠自行车时, 将由前套 连臂 5和后套连臂 6组成的把手 26从垂直向下的位置向水平方向转动 90。 ,前管锁紧套 3和后管锁紧套 4分别随之绕前管 1和后管 2转动, Referring to FIGS. 1-4, a frame tube turning and locking device 20 for a folding bicycle according to the present invention includes a front tube 1 and a rear tube 2. The front tube 1 and the rear tube 2 can be relatively folded. The front tube 1 And rear tube 2 are threadedly connected to a front tube locking sleeve 3 and a rear tube locking sleeve 4 respectively, and a front sleeve connecting arm 5 and a rear sleeve connecting arm 6 are respectively fixed to the front tube 1 and the rear tube 1, The front sleeve link arm 5 and the rear sleeve link arm 6 are connected to each other through a hinged shaft Ί. A locking piece 8 is fixed at the rear end of the front tube 1, and the rear tube lock sleeve 4 is fixed close to the front end of the rear tube 1. The mounting piece 9 has a long hole 10 in the locking piece 8, and a T-shaped locking head 11 that can be inserted into the long hole 10 and extends in the axial direction of the rear tube is fixed on the fixing piece 9. The locking head 1 1 The length and width of the long hole 10 are smaller than the length and width of the long hole 10, but the length of the locking head 11 is greater than the width of the long hole 10. In order to perform accurate positioning, the present invention sets a limit pin 12 in the rear tube 2 and fixes a limit stop 13 on the mounting piece 9. The limit stop 13 is preferably installed on the installation piece 9 On the screw. Fig. 5 shows a case where the frame tube turning lock device 20 of the present invention is applied to a frame. In FIG. 5, the front tube 1 and the rear tube 2 are used as the upper tube of the frame, the front tube 1 is connected with the frame head tube 21, the rear tube 2 is connected with the frame saddle riser 22, and the frame lower tube 2 3 The folding hinge connection mechanism 25 with the rear wheel frame 24 may be in any form. Of course, the frame tube turning and locking device 20 of the present invention may also be used. The method of using the present invention is as shown in Figs. 1 and 2. When folding a bicycle, a handle 26 composed of a front cover link 5 and a rear cover link 6 is rotated 90 from a vertically downward position to a horizontal direction. , The front tube locking sleeve 3 and the rear tube locking sleeve 4 rotate around the front tube 1 and the rear tube 2 respectively,
替换页 (细则第 26条)
后管锁紧套 4带动安装片 9转动, 进而使 T形锁紧头 11转动, 达到图 2所示位置, 此时, T形锁紧头 11可从长孔 10中退出, 折叠铰接结构 25 已经打开或同时打开。 以铰接轴 7为中心作 180° 转动, 即可折叠 车架前管 1和后管 2。 当骑行时, 把手 26处于水平位置, 对接前管 1和后管 2, T形锁 紧头 11插入长孔 10内, 向下转动把手 26到垂直位置, T形锁紧头 11 与长孔 1 0成垂直状态, 前管 1和后管 2即被锁紧。 以上通过一具体实施例对本发明进行了详细描述,但本发明并不 局限于此, 在本发明的构思范围内可以作出多种变化, 这对本领域技 术人员来讲, 是显而易见的, 如, 锁紧片 8和安装片 9的位置及运动 关系可以互换, 锁紧套可以设置在前管或后管内, 但要在前管或后管 上开一用于把手转动的长孔。 Replacement page (Article 26) The rear tube locking sleeve 4 drives the mounting piece 9 to rotate, thereby rotating the T-shaped locking head 11 to the position shown in FIG. 2. At this time, the T-shaped locking head 11 can be withdrawn from the long hole 10 and the folding hinge structure 25 Already open or open at the same time. With the hinge shaft 7 as the center and rotating 180 °, the front tube 1 and the rear tube 2 of the frame can be folded. When riding, the handlebar 26 is in the horizontal position, butt joint the front tube 1 and the rear tube 2, the T-shaped locking head 11 is inserted into the long hole 10, and the handle 26 is turned down to the vertical position. 10 is in the vertical state, and the front tube 1 and the rear tube 2 are locked. The present invention has been described in detail through a specific embodiment, but the present invention is not limited thereto, and various changes can be made within the scope of the concept of the present invention, which is obvious to those skilled in the art, such as a lock The position and movement relationship of the clamping piece 8 and the mounting piece 9 can be interchanged. The locking sleeve can be arranged in the front tube or the rear tube, but a long hole for turning the handle must be opened in the front tube or the rear tube.
替换页 (细则第 26条)
Replacement page (Article 26)