JP3091692U - Connection structure between tricycle rear wheel frame and body frame - Google Patents

Abstract

(57) [Summary] [Problem] To quickly assemble and disassemble a vehicle rear wheel frame and a center frame, the width of the separated rear wheel frame and rear wheel structure can be freely changed, Provided is a connection structure between a rear wheel frame of a tricycle and a body frame, which saves an occupied space and is convenient for storage. SOLUTION: Two hollow fitting tubes 12 are provided on both sides of a rear end of a center frame 1, and an engaging hole 121 penetrating a tube wall is provided on the fitting tube 12. The rear wheel frame 4 has two insertion tubes 41 at the front end of the vehicle body frame corresponding to the distance between the two fitting tubes 12 of the center frame 1, and the outer diameter of the two insertion tubes 41 Corresponding to the inner diameter of the joint pipe 12, they can be inserted and connected to each other. In each of the two insertion tubes 41, a repulsion part 42 is installed, and on the repulsion part 42, a projection button 421 is installed.
21 extends from the perforations in the tube wall.

Description

[Detailed description of the invention]       [0001]     [Technical field to which the invention belongs]   The present invention relates to a connection structure between a rear frame of a tricycle and a body frame. Special Quick assembly and disassembly of the rear frame and the center frame. The width of the rear wheel frame and the rear wheel structure can be freely changed, Tri-wheel rear wheel frame and body frame joint structure saves space and is convenient for storage Pertaining to construction.       [0002]     [Prior art]   Many infant bicycles take the form of tricycles. The basic body of the tricycle is the center Front fork frame is movable by front post in front of frame The front fork frame connects the handle above the front post I do. A front wheel is installed below, and the wheel axis of the front wheel is Connect the In addition, a wheel axle frame is fixedly attached to the rear end of the center frame. Then, two rear wheels are movably connected to both ends by the wheel axle frame. In addition, A saddle is installed on the upper part of the center frame.       [0003]   When riding the infant tricycle described above, the infant sits on the saddle and clamps with both feet. Depress the pedal, rotate the front wheels, and move the vehicle forward. Hand connects above fork Control the traveling direction of the vehicle.   However, in the above-described conventional tricycle structure, the body frame is fixed, and It has a ring structure. Therefore, it takes a width and is extremely inconvenient for storage.       [0004]   In response, foldable infant tricycles have been developed. The tricycle is frame free The body frame has a bendable structure. As a result, the vehicle The arms are bent and folded, reducing the width and length of the vehicle.   However, the above-mentioned bending and folding type configuration consumes time and labor during the bending operation. It is troublesome and easy for the operator to get hurt. In addition, in terms of cost, refractive joints Time and cost due to the large number of parts in the design and its localization structure It is directly connected to up. Price competition in the baby products market due to relatively low prices It becomes weak to power.       [0005]     [Problems to be solved by the invention]   Therefore, the purpose of the present invention is to quickly assemble the rear frame of the vehicle body and the center frame. The rear wheel frame and the rear wheel structure after separation have a free width. With a tricycle rear wheel frame that can be changed, saves occupied space and is convenient for storage An object of the present invention is to provide a coupling structure with a body frame.       [0006]     [Means for Solving the Problems]   In order to solve the above problems, the connection of the rear wheel frame and the body frame of the tricycle of the present invention. Mainly, two hollow fitting pipes are installed on both sides of the rear end of the center frame. An engagement hole penetrating the pipe wall is provided on the pipe. The rear wheel frame is at the front end of the body frame In this case, two insertion pipes are installed corresponding to the distance between the two fitting pipes of the center frame. Moreover, the outer diameters of the two insertion tubes correspond to the inner diameters of the fitting tubes, and can be inserted and connected to each other. Noh. A repulsion component is installed in each of the two insertion tubes, and on the repulsion component, A protruding button is installed, which protrudes from a perforation in the tube wall. At the time of combination Fits the rear wheel frame on both sides of the rear end of the center frame by the two insertion tubes. Insert directly into the tube, press the protruding button of the repelling part, compress it inside and put it into the fitting tube After the insertion tube corresponds to the fitting tube and is fitted, the projection button repels and the fitting tube Automatically engages and localizes in the engagement hole of When disassembling, press the projection button To release from the engagement hole of the fitting tube, pull out the insertion tube from the fitting tube, Disassemble the rear wheel frame.       [0007]     [Embodiment of the invention]   As shown in FIG. 1, the present invention mainly includes a center frame 1 and a front fork 2. , Front wheel 3, rear wheel frame 4, rear wheel 5, clamp shaft 6, pedal 7 And a saddle 8.   The front end of the center frame 1 is connected to the front fork 2 by the front post 11. And the front wheel 3 is movably connected to the bottom end of the front fork 2. Also The rear wheel frame 4 is connected to a rear portion of the center frame 1, and the rear wheel frame 4 The two rear wheels 5 are installed at both ends. The wheel shaft of the front wheel 3 is 6 and the pedal 7 are installed. The front fork 2 is attached to the front post 1 A vertical post 21 is connected at the upper end of the first and a horizontal handle 22 is installed.       [0008]   The rear wheel frame 4 and the center frame 1 have a movable connection form that can be separated, Moreover, the connection structure has a function that can be quickly disassembled.   The center frame 1 has a hollow fitting tube facing rearward on both sides of the rear end. 12 is fixed. An engagement hole 121 penetrating through the pipe wall is provided on the fitting pipe 12.       [0009]   The rear wheel frame 4 has a front end of the center frame 1 Two insertion tubes 41 are installed facing the front corresponding to the distance between the two fitting tubes 12. The The outer diameter of the two insertion tubes 41 corresponds to the inner diameter of the fitting tube 12 and can be inserted and connected to each other. It is. In addition, repulsion parts 42 are installed in the two insertion tubes 41, respectively. A projection button 421 is provided on the repulsion component 42. The projection button 421 is located on the tube wall. Extends from the perforation (not shown).       [0010]   Next, as shown in FIGS. 2, 3, and 4, the rear wheel frame of the tricycle is designed by the above structure design. When the center frame 1 and the center frame 1 are connected to each other, the two rear wheel frames 4 Of the center frame 1 at the rear end on both sides by means of the insertion tube 41. You. Further, the protrusion button 421 of the repulsion part 42 is pressed in advance and compressed inside, It is put into the fitting tube 12 together. Also, the insertion tube 41 corresponds to the fitting tube 12, After being fitted, the projection button 421 is repelled by the elastic spring of the repulsion part 42. Then, it automatically engages with the engaging hole 121 of the fitting tube 12 and is located.       [0011]   Thus, the center frame 1 and the rear wheel frame 4 are quickly and stably assembled. Stand up and complete the assembly of the tricycle.   On the other hand, when disassembling and storing the rear wheel frame 4, the protrusion button 421 is pressed, It is compressed inside and detached from the engagement hole 121 of the fitting tube 12. This The insertion tube 41 is pulled out of the fitting tube 12, and the rear wheel frame 4 is disassembled.       [0012]   Thus, the vehicle body includes the rear wheel frame 4 in the lateral direction, the front wheel 5 and the saddle 8 It is decomposed into two major parts with the vertical center frame 1, and the decomposed individual Can be freely placed at any angle and direction, and can be stored according to the prescribed space You.       [0013]     [Effect of the invention]   As described above, in the present invention, the connection between the rear wheel frame and the center frame is In this case, use the form of insertion, By using this, assembly and disassembly operations can be performed very quickly. Only Also, due to the separate rear wheel frame design, the separated rear wheel frame and rear wheel It can be placed freely in any angle and direction, and can be stored in the prescribed space Can be.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a connection structure between a rear wheel frame of a tricycle and a body frame according to an embodiment of the present invention. FIG. 2 is an external perspective view showing a connection structure between the rear wheel frame of the tricycle and the body frame according to the embodiment of the present invention; FIG. 3 is a side view showing a connection structure between the rear wheel frame of the tricycle and the body frame according to the embodiment of the present invention; FIG. 4 is a partial cross-sectional view illustrating a connection structure between a rear wheel frame of a tricycle and a body frame according to an embodiment of the present invention; [Description of Signs] 1 Center frame 4 Rear wheel frame 12 Fitting tube 41 Inserting tube 42 Repulsive component 121 Engagement hole 421 Projection button

Claims (1)

[Claim 1] Two hollow fitting tubes are installed mainly on both sides of a rear end of a center frame, and an engagement penetrating a tube wall is provided on the fitting tube. A hole is provided, and the rear wheel frame is provided with two insertion tubes corresponding to the distance between the two fitting tubes of the center frame at the front end of the body frame, and the outer diameter of the two insertion tubes is Corresponding to the inner diameter of the fitting tube, they can be inserted and connected to each other, a repulsion component is installed in each of the two insertion tubes, a projection button is installed on the repulsion component, and the projection button is At the time of assembling, the rear wheel frame is directly inserted into the fitting pipes on both sides of the rear end of the center frame by the two insertion pipes, and is pressed inward by pressing the projection button of the repulsion part. And the insertion tube is inserted into the fitting tube. After being fitted, the projection button rebounds and automatically engages and orients in the engagement hole of the fitting tube, and when disassembled, pushes the projection button and compresses it inside. A coupling structure between a three-wheeled vehicle rear wheel frame and a vehicle body frame, wherein the three-wheeled vehicle rear wheel frame is disassembled from the engagement hole of the fitting tube, the insertion tube is removed from the fitting tube, and the rear wheel frame is disassembled.