A children's tricycle with multi-mode operation

Abstract

A children's tricycle with multi-mode operation, characterized in that it includes a frame, a seat is installed in the middle of the frame, a rear wheel is installed at the tail of the frame, a sleeve is provided at the front of the frame, a locking cylinder is rotatably installed in the sleeve, a handlebar is installed on the top of the locking cylinder, a swing frame is rotatably installed at the bottom of the locking cylinder, a steering hole is provided at the bottom of the swing frame, a bogie is rotatably installed in the steering hole through a hinge shaft in the middle thereof, an upper locking device is provided between the locking cylinder and the swing frame, and a lower locking device is provided between the swing frame and the bogie. The beneficial effects of the present invention are: 1. The structure is simple, the production cost is low, and the market competitiveness is improved. 2. The locking operation is simple, convenient and fast. 3. It has multiple operation modes, and users can choose to use according to actual needs. 3. It is suitable for children of various ages, saving users the cost of using baby carriages.

Description

Technical Field

[0001] The invention relates to a children's tricycle, in particular to a children's tricycle with multi-mode operation. Background Art

[0002] At present, most of the baby strollers on the market have a handlebar connected to a rod, and the lower end of the rod is a front fork, which is connected to the wheel axle passing through the wheel. When turning, the handlebar is turned, and the handlebar drives the rod, and the rod drives the wheel axle and the wheel, so as to achieve turning. However, most of the above baby strollers have only one front wheel, and children have poor balance. One of the steering front wheels is not conducive to the balance of the baby stroller when turning, which may easily cause the child to fall during the turning process. Therefore, in order to solve the above problem, one of the front wheels of the baby stroller is changed into a double wheel to improve the balance of the baby stroller when turning.

[0003] Due to the dual-wheel steering, the existing baby stroller becomes very flexible when changing direction. The variable steering operation requires the user to have a certain level of skills, which is not suitable for beginners. In addition, the existing baby stroller does not have a structure with a locking steering function, and the user cannot freely lock or unlock the steering of the front wheel according to their own needs. It is inconvenient and not flexible to use. Therefore, it is necessary to make further improvements. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a children's tricycle with a simple structure, quick locking or unlocking, easy for users to use and having multiple operating modes.

[0005] The objective of the present invention is achieved in the following manner: a children's tricycle with multi-mode operation, comprising a frame, a seat installed in the middle of the frame, a rear wheel installed at the tail of the frame, a sleeve provided at the front of the frame, a locking cylinder rotatably installed in the sleeve, a handlebar installed on the top of the locking cylinder, a swing frame rotatably installed at the bottom of the locking cylinder, a steering hole provided at the bottom of the swing frame, a bogie rotatably installed in the steering hole through a hinge shaft in the middle thereof, an upper locking device provided between the locking cylinder and the swing frame, and a lower locking device provided between the swing frame and the bogie.

[0006] The upper locking device comprises a locking hole penetrating through the cylindrical surface of the locking cylinder and a positioning hole arranged on the swing frame. A locking column passes through the positioning hole and is inserted into the locking hole to coaxially connect the locking cylinder and the swing frame.

[0007] The upper locking device also includes a positioning ring arranged between the sleeve and the locking cylinder. A limiting groove is arranged at a position of the sleeve near the locking hole. A locking hole is arranged on the side of the sleeve opposite to the limiting groove, and the locking column can be inserted into the locking hole.

[0008] The outer column surface of the locking column is inwardly recessed to form a slot, and the positioning ring is clamped in the slot.

[0009] The outer end of the locking column is provided with a rotating handle, and the inner end of the locking column is provided with an external thread. Correspondingly, an internal thread matching the external thread is provided in the locking hole.

[0010] The lower locking device includes an insertion rod built into a movable groove at the lower end of the rocking frame. The insertion rod can slide along the movable groove, extend into and be clamped in a slot on the inner end surface of the bogie, and lock the rocking frame and the bogie.

[0011] A push rod is arranged at the outer end of the inserting rod. The push rod is located in the movable groove of the swing frame and protrudes from the swing frame.

[0012] A guide rod is arranged below the insertion rod and the push rod. The guide rod is installed in a guide groove of the bottom cover of the lower part of the swing frame. The guide rod can slide back and forth along the guide groove. The guide groove is a waist-shaped groove.

[0013] The inserting rod, the pushing rod and the guiding rod are connected by a baffle plate, which is embedded in the movable groove of the swing frame and can slide forward and backward along the movable groove.

[0014] The beneficial effects of the present invention are as follows: 1. The structure is simple, the production cost is low, and the market competitiveness is improved. 2. The locking operation is simple, convenient and quick. 3. There are multiple operation modes, and the user can choose to use according to actual needs. 4. It is suitable for children of various ages, saving the cost of using a baby stroller for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the general assembly effect diagram of the present invention.

[0016] Figure 2 It is a cross-sectional view of the structure of the present invention.

[0017] Figure 3 For the present invention Figure 2 Enlarged view of point A.

[0018] Figure 4 It is an assembly structure diagram of the swing frame and the frame in the present invention.

[0019] Figure 5 It is an assembly structure diagram of the rocking frame and the bogie in the present invention.

[0020] Figure 6 It is a structural schematic diagram of the swing frame in the present invention.

[0021] Figure 7 It is an assembly diagram of the locking column and the positioning ring in the present invention.

[0022] Figure 8 It is a structural schematic diagram of the insertion rod in the present invention.

[0023] Fig. 9 It is a schematic diagram of the structure of the sleeve in the present invention. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings. A child tricycle with multi-mode operation includes a frame 1, a seat 2 is installed in the middle of the frame 1, a rear wheel 3 is installed at the tail of the frame 1, a sleeve 5 is provided at the front of the frame 1, a locking cylinder 6 is rotatably installed in the sleeve 5, a handlebar 4 is installed at the top of the locking cylinder 6, a swing frame 7 is rotatably installed at the bottom of the locking cylinder 6, a steering hole 71 is provided at the bottom of the swing frame 7, a steering frame 8 is rotatably installed in the steering hole 71 through a hinge shaft 81 in the middle thereof, an upper locking device 9 is provided between the locking cylinder 6 and the swing frame 7, and a lower locking device is provided between the swing frame 7 and the steering frame 8.

[0025] The upper locking device 9 includes a locking hole 91 passing through the cylindrical surface of the locking cylinder 6 and a positioning hole 92 provided on the swing frame 7. A locking column 10 passes through the positioning hole 92 and is inserted into the locking hole 91 to coaxially connect the locking cylinder 6 and the swing frame 7.

[0026] The upper locking device 9 also includes a positioning ring 93 arranged between the sleeve 5 and the locking cylinder 6. A limiting groove 11 is arranged on the sleeve 5 near the locking hole 91. A locking hole 51 is arranged on the side of the sleeve 5 opposite to the limiting groove 11, and the locking column 10 can be inserted into the locking hole 51.

[0027] The outer surface of the locking column 10 is recessed inward to form a slot 101 , and the positioning ring 93 is locked in the slot 101 .

[0028] The outer end of the locking column 10 is provided with a rotating handle 102 , and the inner end of the locking column 10 is provided with an external thread. Correspondingly, an internal thread matching the external thread is provided in the locking hole 51 .

[0029] The lower locking device includes an insertion rod 12 built into the movable groove 72 at the lower end of the rocking frame 7. The insertion rod 12 can slide along the movable groove 72. The insertion rod 12 extends into and is clamped in the slot 82 on the inner end surface of the bogie 8 to lock the rocking frame 7 and the bogie 8 together.

[0030] A push rod 13 is disposed at the outer end of the insert rod 12 . The push rod 13 is located in the movable groove 72 of the swing frame 7 and protrudes from the swing frame 7 .

[0031] A guide rod 14 is provided below the insertion rod 12 and the push rod 13. The guide rod 14 is installed in a guide groove 74 of the bottom cover 73 of the swing frame 7. The guide rod 14 can slide back and forth along the guide groove 74. The guide groove 74 is a waist-shaped groove.

[0032] The insert rod 12 , the push rod 13 , and the guide rod 14 are connected by a baffle 15 . The baffle 15 is embedded in the movable groove 72 of the swing frame 7 and can slide forward and backward along the movable groove 72 .

[0033] Working principle: The children's tricycle in this case includes a frame, a sleeve is provided at the front of the frame, a locking cylinder is rotatably installed in the sleeve, a handlebar is installed on the top of the locking cylinder, and it is connected to the swing frame and the bogie through the locking cylinder. An upper locking device is provided between the locking cylinder and the swing frame to lock the locking cylinder and the swing frame for coaxial connection, and a lower locking device is provided between the swing frame and the bogie to lock the swing frame and the bogie for connection. Users can lock the swing frame and the handlebar, or the swing frame and the bogie, or the swing frame, the handlebar and the bogie at the same time according to different needs. The children's tricycle has a variety of operation modes, suitable for a variety of environments and children of different ages, and is highly practical.

[0034] It should be noted that the upper locking device includes a locking hole on the cylindrical surface of the locking cylinder and a positioning hole on the swing frame. When it is necessary to lock both the swing frame and the handlebar, the locking column passes through the positioning hole in turn, is inserted into the locking hole, and continues to extend forward until it passes through the locking hole of the insertion sleeve, thereby locking the two. The locking cylinder is coaxially connected to the swing frame, so when the user turns the handlebar, it also drives the steering frame to turn. The baby carriage performs gravity steering at this time, and gravity forces the front wheel on the steering side to increase the force, thereby increasing the friction between it and the ground, forcing the speed of the front wheel on this side to be lower than the speed on the other side. The speed difference is used to make the steering frame deflect around the steering hole of the swing frame through the hinge shaft, and finally achieve steering.

[0035] It should be noted that the lower locking device includes an insert rod built into a movable groove at the lower end of the rocking frame. When it is necessary to lock both the rocking frame and the bogie, the push rod arranged at the outer end of the push rod is pushed forward so that the insert rod is extended into and stuck in the slot at the inner end of the bogie, thereby locking the two. At this time, the bogie loses the gravity steering function, and the steering of the children's tricycle can only be achieved by turning the handlebars.

[0036] It should be noted that when the upper locking device and the lower locking device are locked at the same time, the handlebars, the swing frame and the steering frame are locked at the same time. At this time, the children's tricycle can only move in a straight line and cannot turn. It is used for beginner children. Compared with traditional technology, the tricycle in this case has three modes: gravity steering, handlebar steering and prohibiting steering and straight-line walking. Parents can choose to use it according to the actual situation of the children to meet the needs of children at different stages. This avoids the need for parents to buy various forms of baby carriages for children to use, realizes multiple uses of one item, and reduces the user's cost of use, so it can be widely promoted and used.

[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A children's tricycle with multi-mode operation, characterized in that: The vehicle comprises a frame (1), a seat (2) is installed in the middle of the frame (1), a rear wheel (3) is installed at the rear of the frame (1), a sleeve (5) is arranged at the front of the frame (1), a locking cylinder (6) is rotatably installed in the sleeve (5), a handlebar (4) is installed at the top of the locking cylinder (6), a swing frame (7) is rotatably installed at the bottom of the locking cylinder (6), a steering hole (71) is arranged at the bottom of the swing frame (7), a steering frame (8) is rotatably installed in the steering hole (71) through a hinge shaft (81) in the middle thereof, an upper locking device (9) is arranged between the locking cylinder (6) and the swing frame (7), and a lower locking device is arranged between the swing frame (7) and the steering frame (8); The upper locking device (9) comprises a locking hole (91) penetrating the cylindrical surface of the locking cylinder (6) and a positioning hole (92) provided on the swing frame (7); a locking column (10) passes through the positioning hole (92) and is inserted into the locking hole (91) to coaxially connect the locking cylinder (6) and the swing frame (7); The upper locking device (9) further comprises a positioning ring (93) arranged between the sleeve (5) and the locking cylinder (6); a limiting groove (11) is arranged at a position of the sleeve (5) close to the locking hole (91); a locking hole (51) is arranged on a side of the sleeve (5) opposite to the limiting groove (11); and the locking column (10) can be inserted into the locking hole (51); The outer column surface of the locking column (10) is recessed inwards to form a slot (101), and the positioning ring (93) is locked in the slot (101); The outer end of the locking column (10) is provided with a rotating handle (102), and the inner end of the locking column (10) is provided with an external thread. Correspondingly, an internal thread matching the external thread is provided in the locking hole (51).

2. A children's tricycle with multi-mode operation according to claim 1, characterized in that: The lower locking device comprises an insertion rod (12) built into a movable groove (72) at the lower end of the rocking frame (7). The insertion rod (12) can slide along the movable groove (72). The insertion rod (12) extends into and is clamped in a slot (82) on the inner end surface of the bogie (8), thereby locking and connecting the rocking frame (7) and the bogie (8).

3. A children's tricycle with multi-mode operation according to claim 2, characterized in that: The outer end of the insert rod (12) is provided with a push rod (13), and the push rod (13) is located in the movable groove (72) of the swing frame (7) and protrudes from the swing frame (7).

4. A children's tricycle with multi-mode operation according to claim 3, characterized in that: A guide rod (14) is provided below the insertion rod (12) and the push rod (13). The guide rod (14) is installed in a guide groove (74) of a bottom cover (73) at the lower part of the swing frame (7). The guide rod (14) can slide forward and backward along the guide groove (74); the guide groove (74) is a waist-shaped groove.

5. A children's tricycle with multi-mode operation according to claim 4, characterized in that: The insert rod (12), the push rod (13) and the guide rod (14) are connected via a baffle (15). The baffle (15) is embedded in a movable groove (72) of the swing frame (7) and can slide forward and backward along the movable groove (72).

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