JP3083925U - Foldable children's tricycle with push-wheel function - Google Patents

Abstract

(57) [Summary] [Problem] A foldable tricycle for children having a push wheel function. A supporting rod is pivotally provided at a front end of a bone rod, a connecting rod is pivotally provided at a rear end, a supporting rod and a connecting rod are separately pivoted by a connecting rod, and a vehicle head is pivotally provided at a front end of the supporting rod. An inverted U-shaped rod is welded to the rear end of the connecting rod, a locking plate and a spring are pivotally locked to one side of the bone rod, and a rear protruding portion of one side of the bone rod is inserted into a locking groove of the locking plate. Are locked and combined to form a foldable connecting rod device, and a straight rod provided with a rotation positioning device is provided on the back of the bone rod, a grip rod is fixed to the rotation positioning device, and the front and rear inclination of the grip rod is fixed. The angle is adjusted by the rotation positioning device, it is used for gripping by adults of different heights, it is folded when the grip rod is not used, the car head rotation structure is provided at the bottom end of the straight rod, the connecting rod set of the car head rotation structure is the head grip And the cylinder provided at the bottom end of the straight rod It is assembled in a flat stand.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a folding children's tricycle having a kind of push-wheel function. The tricycle is folded down to reduce its volume, so that it is easy to carry and store to take up space, and also in the direction of headway or heading. The present invention relates to a foldable children's tricycle having a push-push function, which can be used as a push-push for children and has a versatile inventive step.

[0002]

[Prior art]

 The present invention is an improvement on the foldable children's tricycle of the applicant's Taiwan Utility Model No. 164311 and U.S. Pat. No. 6,152,473. It was foldable (see FIGS. 1 and 2), was convenient to carry, occupied no storage space, and had the effect of greatly reducing transportation costs. And the products are marketed and accepted by domestic and foreign people. However, these known techniques have drawbacks in use. In other words, the tricycle has only a single function provided for children and children to ride, has no other additional uses, and therefore loses competitiveness. When it was not possible to maintain straight running, and when bending the car's head at a turn, it was quite inconvenient to use the bicycle because an adult had to turn a tricycle ahead of a child. In addition, there is no positioning structure after folding the tricycle, so it easily recovers after folding the tricycle, creating a storage problem.In addition, for a beginner or infant, both feet float in the air even when sitting on a saddle, The pedals could not be depressed to turn the wheel, which placed the infant in an unstable condition and could fall and be injured.

[0003]

[Problems to be solved by the invention]

 As described above, the structure of the well-known folding child tricycle is not yet complete, and therefore the present invention solves the drawbacks and provides a new child tricycle structure having a push wheel function. That is the task.

[0004]

[Means for Solving the Problems]

 According to the invention of claim 1, a pair of handles, a pair of pedals, a front wheel and a support rod are assembled to a vehicle head, and one support rod and one bone rod are pivotally connected to the vehicle head in a rearward order. Is fixed to the support rod by elastic means, a stopper hole is provided in the lower plate, and an auxiliary pedal rod is provided at the rear end of the support rod to be used by a child to step on the bone rod. The saddle is fixed upward with the second threaded part, the backrest is extended to the back of the bone rod, and a straight rod with a stopper ring is provided outside the back of the backrest. A connecting rod is pivotally connected, a grip rod is pivotally connected to the rear side of the connecting rod, an inverted U-shaped rod is welded backward to the connecting rod, and one shaft is fixed to the bottom end of the inverted U-shaped rod. , A pair of rear wheels are pivotally connected to both ends of the axle, forming a child tricycle The child tricycle is provided with a folding connecting rod device and a rotation positioning device. In the folding connecting rod device, a front protruding portion and a rear protruding portion are provided on one side edge of the bone rod. The stop plate is assembled to the second screw part, the lock plate has a lock groove and a long groove, and the long groove of the lock plate is locked to the rear lock portion of the connecting rod. Is selectively locked to the front or rear protruding portion of the bone rod, the locking plate stably abuts against the side of the bone rod, and in the rotation positioning device, the rotation positioning device is provided on a straight rod. The rotation positioning device is composed of an upper block body, a lower block body, a spring, a tooth block, and a pressing block, and one cylinder protruding and extending is provided at the center of the lower block body, and the spring is provided with the cylinder. The upper block body and the lower block body have ring-shaped tooth holes inside. A ring is provided at the upper end of the lower block body, a plurality of teeth are provided in an annular shape corresponding to the tooth holes on the outside of the tooth mass, a fitting hole is provided at the center, and an inward direction is provided above the fitting hole. An extended contact wall is provided, the tooth mass is inserted into the cylinder by a fitting hole, the tooth mass is incorporated into the lower block body, the upper part of the spring abuts against the contact wall, and the approximately Half of the tooth block is engaged with the tooth hole by pushing half of the lower block away from the lower block, and one cylinder corresponding to the cylinder is provided at the center of the upper block, and the ring wall projects at the part corresponding to the ring. The upper block body is provided with two semicircular through holes, the upper block body is assembled into the cylinder by the cylinder, and one rivet connects the cylinder and the cylinder, and the ring wall is in the ring. Is installed, the other half of the tooth mass is contained in the upper block, and some teeth of the tooth mass The tooth block is engaged with the tooth hole of the block body, whereby the tooth block is located in the middle between the upper block body and the lower block body, and both are positioned and integrated, and locking portions are provided on both sides of the pressing block. Hooks are formed outwardly at the two locking portions, respectively, and the outer wall of the hook has an inclined shape, whereby the pressing block is formed by the two locking portions with the two through holes of the upper block body. The hook locks the inner wall of the upper block outside the through-hole, so that the pressing block cannot be disengaged upward from the upper block and when the pressing block is pressed downward, The locking part presses the tooth mass, the tooth mass is moved downward by the spring, and the tooth mass is completely contained in the lower block body, the teeth are disengaged from the tooth holes in the upper block body, and the upper block body For the lower block The ring wall enables rotation inside the ring.When the pressing force against the pressing block is released, it returns to the normal position, the lower block is fixed to a straight rod, and the grip rod is fixed to one side of the upper block. The connecting rod set is composed of a front connecting rod and a rear connecting rod, a step is provided at the front end of the front connecting rod, and the rear end is bent to form a locking portion. At the front end of the rear connecting rod, a convex ear with a fitting hole is continuously provided, the rear end is bent to form a hook part, the side of the bone rod is extended, and a positioning block with a hole is formed, and the rear connecting part is formed. The hook at the rear end of the rod is passed through the hole of the positioning block behind the front, the hook is locked in the locking hole of the flat base, and is locked and positioned by the locking piece. The step is inserted into the stop hole of the lower plate, and the front connecting rod The stopper is pivotally connected to the pivot hole of the convex ear, and one positioning piece is provided and positioned, and the front connecting rod and the rear connecting rod are pivotally connected.The straight rod is rotated by the grip rod, and the flat base is rotated. Pulling the locking hole from the locking part to turn the connecting rod backward, thereby driving the pulling step of the front connecting rod, pulling the lower plate by the locking hole, and rotating the vehicle head in a timely manner. It is a folding children's tricycle with a car function.

[0005]

[Embodiment of the invention]

 As shown in FIGS. 3 and 4, the children's tricycle of the present invention is composed of a head 2 and a main body 3. The vehicle head 2 includes a pair of handles 21, a pair of pedals 22, a front wheel 23, and a support rod 24. When a child grips the pair of handles 21 with his / her hands, the front wheel 23 can be moved forward. A U-shaped sheet 241 is provided at the front end of the rod 24, and the support rod 24 is pivotally provided between the upper plate 211 and the lower plate 212 of the two handles 21 using the U-shaped sheet 241. The handle 21 and the support rod 24 are locked and interlocked by one elastic means 242, and the vehicle head 2 holds the straight running by the elastic means 242 (see FIG. 4). A mounting sheet 25 is provided at the rear end of the rod 24 (see FIG. 5), and an inner mounting hole 252 and an outer mounting hole 253 are provided at two mounting sides 251 at two side edges of the mounting sheet 25. Pivotally connected between the two mounting pieces 251. An auxiliary pedal rod 27 having a protruding block 271 on one side is pivotally connected to the step 26, and the protruding block 271 protrudes into the inner mounting hole 252 and is positioned. When rotating up and down around the pivoting means 26, they engage with the inner mounting holes 252 and the outer mounting holes 253, respectively, so that the infant can place both feet on the auxiliary pedal rod 27 and fold when not in use. The cover rod 243 protrudes rearward inside the support rod 24 (see FIG. 6), and a pivot hole 244 is provided at the bottom end (see FIG. 7). The main body 3 includes a bone rod 31, the saddle 32 is fixed upward, the rear side of the bone rod 31 is extended and the backrest 36 is fixed (see FIG. 8), and a connecting rod 41 is further attached to the rear end of the bone rod 31. The inverted U-shaped rod 33 is welded to the connecting rod 41 as well as to the rear, and a shaft 34 is provided at the bottom end of the inverted U-shaped rod 33. When the child sits on the saddle 32 and depresses the pair of pedals 22 with his legs, the front wheel 23 and the pair of rear wheels 35 freely run forward, thereby achieving the child's tricycle riding purpose.

The present invention further provides the following. As shown in FIG. 7, one folding connecting rod device 4 has the above-mentioned inverted U-shaped rod 33 welded to one end of a connecting rod 41 and two through holes 411 corresponding to the other end of the connecting rod 41. In addition, two perforations 412 are provided at appropriate locations, and two connecting portions 311 protrude from the front end of one bone rod 31, and are pivotally connected to the cover rod 243 of the support rod 24, and Two pairs of through holes 312 are provided at an appropriate portion of the rear end, and the above-mentioned saddle 32 is provided at the rear end of the bone rod 31 with two connecting pieces 321 extending from the bottom surface. The screw parts N1 and N2 penetrate the connecting piece 321 and the two pairs of through holes 312, and the saddle 32 and the bone rod 31 are screwed together. One through hole 313 is provided on each of the two side edges of the rear end bottom edge of the bone rod 31. Is provided at an appropriate part of one side edge. Protrusion 314 and the rear projecting portion 315 is provided. The locking plate 42 is pivotally connected to the second screw component N2, the locking plate 42 is provided with a locking groove 421 and a long groove 422, and the drive block 423 is protruded from an appropriate portion of the two side edges. I have. One connecting rod 43 has its front end and rear end bent to form a front locking part 431 and a rear locking part 432, respectively. The front locking part 431 and the rear locking part 432 are pivotally connected to the support rod 24, respectively. The rear engaging portion 432 is inserted into the contact hole 244 and the perforation 412 of the connecting rod 41, subsequently passes through the long groove 422 of the locking plate 42, and is locked and positioned by one positioning piece 424. One spring 44 locks the rear locking portion 432 and the second screw component N2 whose two ends have passed through the perforations 412, respectively (see FIGS. 8 and 9). 421 is locked to the rear protruding portion 315 of one side of the bone rod 31, and is thus used for children's riding.

One rotation positioning device 6 has one straight bar 5 provided on the back side of the backrest 36, and the rotation positioning device 6 is fixed to the straight bar 5. The rotation positioning device 6 includes an upper block body 61 and a lower block 61. It is composed of a block body 62, a spring 63, a tooth block 64, and a pressing block 65 (see FIGS. 10 and 11). A plurality of tooth holes 611 and 621 corresponding to the inside of the upper block body 61 and the lower block body 62 are provided in a ring shape. A ring 622 is provided at the upper end inside the lower block body 62, the lower sleeve 623 is extended from one side, the lower sleeve 62 is screwed to the straight bar 5, and the lower sleeve 62 protrudes and extends to the center of the lower block body 62. Two cylinders 625 are provided, and a spring 63 is mounted on the cylinder 625. The height of the tooth mass 64 is smaller than the depth inside the lower block body 62, a plurality of teeth 641 corresponding to the tooth holes 611 and 621 are provided on the outside in a ring shape, and a fitting hole 642 is provided in the center. An inwardly extending contact wall 643 is provided at the upper part of the cylinder, the tooth mass 64 is inserted into the cylinder 625 by the fitting hole 642, the tooth mass 64 is incorporated into the lower block body 62, and the teeth 641 correspond to the tooth mass 641. The upper part of the spring 63 abuts against the contact wall 643, and the spring 63 pushes the tooth mass 64 away from the lower block body 62 at about half the time, and the spring 63 pushes the tooth mass 64 under the tooth block 64. The half teeth 641 are engaged with the tooth holes 621, and the tooth mass 64 has a pressing elastic recovery ability. One cylindrical body 612 is provided at the center of the upper block body 61 corresponding to the cylinder 625, and a ring wall 613 protrudes at a portion corresponding to the ring 622, and two semicircular through holes are provided in the upper block body 61. 614 is provided, one side is extended to provide an upper sleeve 615, the grip rod 7 is screwed into the upper sleeve 615, the upper block body 61 is assembled into the cylinder 625 by the cylinder 612, One rivet D passes through the cylinder 625 and the cylinder 612, and is pivotally connected. Thus, the upper block body 61 and the lower block body 62 are pivoted and integrated, and the ring wall 613 of the upper block body 61 is just The tooth block 64 of the upper part of the lower block body 62 is accommodated in the ring 622 of the lower block body 62, and the teeth 641 of the tooth block 64 are partially accommodated in the upper block body 61. The upper block body 61 is engaged with the tooth hole 611 of the upper block body 61, and thus the tooth mass 64 is located between the upper block body 61 and the lower block body 62, and the teeth 641 are formed in the tooth holes of the upper block body 61 and the lower block body 62. 611, 621 mesh. Thereby, the upper block body 61 and the lower block body 62 are positioned integrally, the straight bar 5 is fixed to the back side of the backrest 36, and the rotary positioning device 6 is fixed to the backrest 36. Locking portions 651 are provided on both sides of the pressing block 65, hooks 652 are formed on the two locking portions 651 toward the outside, and the outer wall of the hook 652 has an inclined shape. Are combined with the two through holes 614 of the upper block body 61 by the two locking portions 651, and the hook 652 locks the inner wall of the upper block body 61 outside the through hole 614, so that the pressing block 65 is It can be pressed slightly downward and cannot be removed upward from the upper block body 61 (see FIG. 11). Therefore, when the pressing block 65 is pressed downward, the two locking portions 651 press the tooth mass 64 downward, the tooth mass 64 is moved downward by the spring 63, and some teeth 641 of the tooth mass 64 are moved. Are disengaged from the engagement of the upper block body 61 with the tooth holes 611, and the upper block body 61 corresponds to the lower block body 62 by the ring wall 613 in the ring 622, and rotates 360 ° around the rivet D (FIG. 1). 2). Further, when it is desired to position the upper block body 61 and the lower block body 62, that is, when the pressing force on the pressing block 65 is released, the tooth mass 64 is restored to the original position by the spring 63, and the tooth 641 is again inserted into the tooth hole 611. Meshing and positioning. A handle cover 71 is provided at the free end of the grip rod 7, and is used by an adult to hold the hand and move the tricycle forward, thereby providing a pushcart for children.

In the vehicle head rotating structure 8, a U-shaped block 81 is screwed to the back of the backrest 36 (see FIG. 13), a sleeve 82 is fixed to the back of the U-shaped block 81, and The stopper ring 51 is welded, the outer diameter of the straight rod 5 is slightly smaller than the inner diameter of the sleeve 82, the straight rod 5 is inserted into the sleeve 82, the stopper ring 51 stops the upper end of the sleeve 82, and a connecting hole is formed at the bottom. The connecting portion 52 provided with the hole 521 is exposed (see FIG. 13), the connecting portion 52 is provided with a cylinder 83 having a circular hole 831, and the bolt N penetrates the circular hole 831 and the mounting hole 521, and the nut A flat base 84 having a locking hole 841 protrudes from one end of the cylinder 83. One connecting rod set 9 is composed of a front connecting rod 91 and a rear connecting rod 92 (see FIG. 14). A pulling step 911 is provided at the front end of the front connecting rod 91, and the rear end is bent so that the locking portion is formed. At the front end of the rear connecting rod 92, a convex lug 922 having a fitting hole 921 is continuously provided, and the rear end is bent to form a hook portion 923. A positioning block 317 having a hole 316 protrudes from an appropriate portion on the side of the bone rod 31 (see FIG. 14). The hook portion 923 at the rear end of the rear connecting rod 92 is passed through the hole 316 of the positioning block 317 behind the front, and the hook portion 923 is locked in the locking hole 841 of the flat base 84, and is engaged with the locking piece 93. Stop positioning is performed (see FIG. 13), and a convex lug 922 is provided at the front end of the positioning block 317. Subsequently, the pulling step 911 at the front end of the front connecting rod 91 is inserted into the stop hole 213 of the lower plate 212 (see FIG. 4), and the locking portion 912 of the front connecting rod 91 is pivotally connected to the fitting hole 921 of the convex lug 922. In addition, one positioning piece 94 is provided and positioned (see FIG. 14), the front connecting rod 91 and the rear connecting rod 92 are pivotally connected, and the connecting rod set 9 is integrally formed with the straight rod 5 by the cylinder 83. The straight bar 5 is operated and does not separate from the sleeve 82 by using the cylinder 83, and the inner diameter of the sleeve 82 is slightly larger than the outer diameter of the straight bar 5, so that the straight bar 5 can rotate inside the sleeve 82. When the straight rod 5 rotates to the left (or right), the cylinder 83 also rotates to the left (right), and at the same time, the locking hole 841 of the flat base 84 moves the rear connecting rod 92 backward by the hook portion 923. Pull (see Fig. 15) When the pulling step 911 of the connecting rod 91 pulls the lower plate 212 through the stop hole 213 to rotate the entire vehicle head 2 to the left (or right) (see FIG. 15) and release the rotational force on the straight rod 5, The vehicle head 2 is returned to the original position by the elastic means 242, the vehicle head 2 keeps the straight running, and the adult can grasp the handle cover 71 of the grip rod 7 and push the tricycle to move forward. Assists the ride. Further, the straight rod 5 is rotated by the grip rod 7, thereby rotating the head 2 to the left or right (see FIG. 15). , And the whole can be operated more flexibly.

When the user wants to fold the device without using it, the driver grasps the driving block 423 located on the locking plate 42 earlier, turns the locking plate 42 outward, and overcomes the elasticity of the spring 44. The rear protruding portion 315 is disengaged, the saddle 32 is further turned upward (see FIG. 8), and the connecting rod 41 is turned forward in the bore 412 with the rear locking portion 432 as a fulcrum, thereby making the connecting rod 41 vertical and boneless. It is made to approach the rod 31 and rotate forward around the cover rod 243 of the support rod 24 linked to the bone rod 31 to form a vertical shape. Further, the front locking part 431 and the rear locking part 432 of the connecting rod 43 are formed. The saddle 32 is inserted into the support rod 24 and the connecting rod 41 so that the saddle 32 abuts against the inner side of the support rod 24 (see FIG. 9). 421 is a bone stick When the folding connecting rod device 4 is turned and the rear connecting rod 92 is turned upward with the locking portion 912 of the front connecting rod 91 as a fulcrum (see FIG. 16), the connecting rod set is established. 9, the pressing block 65 of the rotary positioning device 6 is pressed, and the upper block body 61 is rotated forward around the rivet D to fold the grip rod 7 and significantly reduce the volume of the child tricycle. Shrink and reduce the storage space (see FIGS. 17 and 18). If the user uses the vehicle again, the user can perform the operation opposite to the folding operation to use the vehicle (see FIG. 3).

According to the present invention, the inclination angle of the grip rod 7 can be adjusted according to the height of an adult who assists in forward movement by grasping and pushing (see FIG. 3), and an adult can grasp the grip rod 7 and assist in forward movement of the tricycle. The grip rod 7 can be turned backward so that it can be accommodated when the child is not in use, and the grip rod 7 is brought into contact with the shaft 34 (see FIG. 19). It is convenient for use by children.

[0011]

[Effect of the invention]

 Therefore, the present invention has a significant difference in structure from the well-known technology, and the present invention has the following facts on practical function enhancement. 1. The head 2 of the present invention can maintain a straight forward movement by using the elastic means 242, and an adult can assist the forward movement of the tricycle by gripping the grip rod 7, and furthermore, steer the grip rod 7 to rotate the straight rod 5. The connecting rod set 9 controls the car head 2 so that the car head 2 can be bent appropriately, has mobility in operation, prevents the car head 2 from bending, and prevents a child from falling and being injured. To ensure safety. 2. When the present invention is used as a pushcart, the child sits on the saddle 32 and steps on the auxiliary pedal rod 27 of the mounting sheet 25 provided on the support rod 24 with both feet of the child, and the adult grips the grip rod 7. The tricycle can be pushed forward to control the headway 2 in the same direction of curving or directed running by rotation or immobilization of the grip rod 7, which is very convenient for maneuvering in the running direction. 3. According to the present invention, the tricycle is folded using the folding connecting rod device 4, and the gripping rod 7 is rotated toward the vehicle head 2 by the rotation positioning device 6, and the rear connecting rod 92 of the connecting rod set 9 is moved forward. With the locking portion 912 of the connecting rod 91 as a fulcrum, the child tricycle can be rotated vertically upward and folded, so that there is no obstacle to the folding of the entire child tricycle, the volume of the entire tricycle after folding can be significantly reduced, and the locking position can be securely locked. It is convenient to carry, occupies little space when storing and transporting, and can reduce the transportation cost of package transport. 4. The folding and unfolding operation of the tricycle according to the present invention is performed by slightly rotating the locking plate 42 to lock or disengage the locking groove 421 with the front protruding portion 314 and the rear protruding portion 315, and furthermore, saddle upward or downward. This can be achieved by rotating the 32, which is simple, easy and quick, and is more convenient for storage when the child is in use or not. 5. The grip rod 7 of the present invention can adjust the inclination angle according to the height of an adult, and is convenient for an adult to grip and push. When the grip rod 7 is not on board, turn it backward to contact the shaft 34. (See Figure 19), which is more convenient for children to ride.

Taken together, the present invention reliably achieves its intended purpose and function, and is more practical than known techniques, and its structure is not comparable to similar articles having the same characteristics. It has the novelty of the space form and conforms to the requirements for utility model registration.

[Brief description of the drawings]

FIG. 1 is a perspective view of Taiwan Utility Model Registration No. 164311 and US Pat. No. 6,152,273 when deployed.

FIG. 2 is a perspective view of Taiwan Utility Model Registration No. 164311 and US Pat. No. 6,152,273 when folded.

FIG. 3 is a perspective view of the present invention.

FIG. 4 is a combined perspective view of the vehicle head rotation recovery structure of the present invention.

FIG. 5 is an exploded perspective view of the auxiliary pedal rod part of the present invention.

FIG. 6 is a view showing the folding operation of the auxiliary pedal rod of the present invention.

FIG. 7 is an exploded perspective view of the folding connecting rod device of the present invention.

FIG. 8 is a view showing a combined state of the folding connecting rod device of the present invention.

FIG. 9 is a view showing a folding operation of the folding connecting rod device of the present invention.

FIG. 10 is an exploded perspective view of the rotary positioning device of the present invention.

FIG. 11 is a sectional operation view of the rotary positioning device of the present invention.

FIG. 12 is an operation display diagram of the rotary positioning device of the present invention.

FIG. 13 is an exploded perspective view of a vehicle head rotating structure of the present invention.

FIG. 14 is an exploded perspective view of the connecting rod set of the present invention.

FIG. 15 is a perspective view of the head rotation operation of the present invention.

FIG. 16 is a folding operation diagram of the vehicle head rotating structure according to the present invention.

FIG. 17 is a view showing the entire folding of the present invention in another direction.

FIG. 18 is a view showing the entire folding of the present invention.

FIG. 19 is a view showing the folded grip rod according to the present invention.

[Explanation of symbols]

2 Head 21 Handle 211 Upper plate 212 Lower plate 213 Stop hole 22 Pedal 23 Front wheel 24 Support rod 241 U-shaped seat 242 Elastic means 243 Cover rod 2
44 pivot hole 25 mounting sheet 251 mounting piece 252
Inner mounting hole 253 Outer mounting hole 26 Pivoting means 27 Auxiliary pedal rod 271 Projecting block 3 Main body 31 Bone rod 311 Connecting portion 312 Through hole 313
Through hole 314 Front projection 315 Rear projection 3
16 holes 317 Positioning block 32 Saddle 3
21 connecting piece 33 inverted U-shaped rod 34 shaft rod 3
5 Rear wheel 36 Backrest 4 Folding connecting rod device 41 Connecting rod 411 Through hole 4
12 Drilling 42 Locking plate 421 Locking groove 4
22 long groove 423 drive block 424 positioning piece 4
3 connecting rod 431 front locking part 432 rear locking part 4
4 Spring 5 Straight bar 51 Stopper ring 5
2 connecting part 521 connecting hole 6 rotation positioning device 6
DESCRIPTION OF SYMBOLS 1 Upper block body 611, 621 Tooth hole 612 Cylindrical body 6
13 Ring wall 614 Through hole 615 Upper sleeve 6
2 Lower block body 622 Ring 623 Lower sleeve 6
25 cylinder 63 spring 64 tooth mass 6
41 tooth 642 fitting hole 643 contact wall 6
5 Press Block 651 Locking Portion 652 Hook 7
Grip rod 71 Handle cover 8 Head rotation structure 8
1 U-shaped block 82 Sleeve 83 Cylinder 8
31 circular hole 84 flat base 841 locking hole 9
Connecting rod set 91 Front connecting rod 911 Step 9
12 Locking part 92 Rear connecting rod 921 Fitting hole 9
22 convex ear 923 hook part 93 locking piece 9
4 Positioning piece N Bolt S Nut N
1 first screw part N2 second screw part D rivet

Claims (1)

[Utility model registration claims] 1. A pair of handles, a pair of pedals, a front wheel, and a support rod are assembled to a vehicle head, and one support rod and one bone rod are pivotally connected to the vehicle head in a rearward order, and a lower plate of the handle is elastic. The lower plate is provided with a stop hole, and the rear end of the support rod is provided with an auxiliary pedal rod for a child to step on. The saddle is fixed upward by two screw parts, the backrest is extended to the back of the bone rod, and a straight rod with a stopper ring is provided outside the back of the backrest, and one connecting rod is located at the center of the bone rod. It is pivoted, the grip rod is pivotally connected to the rear side of the connecting rod, the inverted U-shaped rod is welded backward to the connecting rod, one shaft is fixed to the bottom end of the inverted U-shaped rod, and both sides of the shaft are A pair of rear wheels are pivotally connected to the ends to form a child tricycle, The child tricycle is provided with a folding connecting rod device and a rotation positioning device, and in the folding connecting rod device, a front protruding portion and a rear protruding portion are provided on one side edge of the bone rod, and one locking plate is A locking groove and a long groove are provided in the locking plate, the long groove of the locking plate is locked to the rear locking portion of the connecting rod, and the locking groove of the locking plate is selectively provided. The locking plate is stably abutted on the side of the bone rod, and is locked on the front protruding portion or the rear protruding portion of the bone rod. In the rotation positioning device, the rotation positioning device is provided on a straight rod. The positioning device is an upper block,
The lower block is composed of a spring, a tooth block and a pressing block. A single cylinder is provided at the center of the lower block, and a spring is provided on the cylinder. A ring is provided at the upper end of the lower block body, a plurality of teeth are provided in an annular shape corresponding to the tooth hole outside the tooth block, a fitting hole is provided in the center, and an upper part of the fitting hole is provided. An inwardly extending contact wall is provided on the tongue, the tooth mass is wrapped around the cylinder by a fitting hole, the tooth mass is incorporated into the lower block body, the upper part of the spring abuts against the contact wall, and the tooth mass Approximately half are pushed away from the lower block body, half of the tooth mass engages with the tooth hole, and one cylinder body is provided in the center of the upper block body corresponding to the cylinder, and the ring wall protrudes at the part corresponding to the ring. The upper block body is provided with two semicircular through holes, The lock body is assembled into the cylinder by the cylinder, one rivet connects the cylinder and the cylinder, the ring wall is incorporated into the ring, the other half of the tooth mass is housed in the upper block, The teeth of the upper part just mesh with the tooth holes of the upper block body, whereby the tooth mass is located in the middle of the interior of the upper block body and the lower block body, and both are positioned and integrated, and are respectively engaged on both sides of the pressing block. A stop is provided, a hook is formed on each of the two locking portions toward the outside, and the outer wall of the hook has an inclined shape. In combination with the hole, the hook locks the inner wall of the upper block body outside the through hole, so that the pressing block cannot be detached upward from the upper block body, and when the pressing block is pressed downward The two locking parts press the tooth mass, the tooth mass moves downward by the spring, and the tooth mass is completely contained in the lower block body, and the teeth are disengaged from the tooth holes of the upper block body, and the upper block body Is rotatable within the ring by the ring wall with respect to the lower block body, and when the pressing force against the pressing block is released, it returns to the normal position, the lower block body is fixed to a straight rod, and one side of the upper block body The connecting rod set is composed of a front connecting rod and a rear connecting rod, and a front end of the front connecting rod is provided with a pulling step, and the rear end is bent to secure the grip rod. The rear end of the rear connecting rod is provided with a convex ear having a fitting hole at the front end, the rear end is bent to form a hook portion, and the side of the bone rod is extended to form a positioning block having a hole. The hook at the rear end of the rear connecting rod is It is passed through the hole of the positioning block behind, the hook is locked in the locking hole of the flat base, and the locking piece is locked and positioned, and then the pulling step of the front connecting rod is inserted into the locking hole of the lower plate Then, the locking portion of the front connecting rod is pivotally connected to the pivot hole of the convex ear, and one positioning piece is provided and positioned, and the front connecting rod and the rear connecting rod are pivotally connected, and are directly connected by the grip rod. By rotating the rod, the locking hole of the flat base is pulled from the locking portion to make the connecting rod backward, thereby driving the pulling step of the front connecting rod, pulling the lower plate by the stop hole, and rotating the vehicle head in a timely manner. A foldable children's tricycle having a push-wheel function.