CN211032870U - Balance vehicle - Google Patents

Abstract

A balance car comprises a frame formed by connecting a front wheel frame and a rear wheel frame which are obliquely arranged, a front wheel set, a rear wheel set, a seat and a handle arranged on the upper end of the rear wheel frame; the front wheel set comprises two front wheels and a front wheel axle; the front wheel shaft is connected with the lower end of the front wheel frame through a gravity center offset steering structure; the rear wheel set comprises at least one rear wheel and a rear wheel shaft; the rear wheel shaft is connected with the lower end of the rear wheel frame; the included angle between the front wheel frame and the rear wheel frame is an obtuse angle; the seat is installed at the middle position of the rear wheel frame. Adopt the "income" style of calligraphy frame that the front wheel carrier that sets up by the slope links with the back wheel carrier, handle and seat are established respectively on the upper end and the middle part position of back wheel carrier, and the infant sits on the seat like this and holds back on the handle, just can promote the balance car with the heel brace on the ground and slide and played, this compares and is similar to the bicycle formula balance car of the rule of a thousand at present, the utility model discloses an interesting and play the sensation and be different from bicycle formula balance car, more can attract infant's interest of playing even.

Description

Balance vehicle

Technical Field

The utility model relates to a balance car for children to play.

Background

Currently, the commonly available balance cars (also called baby walkers) suitable for children (generally 1-3 years old) to play are basically two-wheeled and a small number of three-wheeled or four-wheeled, but the balance cars with two, three or four-wheeled wheels are similar to bicycles without chains and pedals, so that the almost universal balance cars greatly reduce the interest of the children in playing and also reduce the interest of the children in playing. To this end, the applicant has developed a balance car of entirely new construction suitable for children aged 1-3 years.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a balance car with different interesting and playing feelings.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a balance car comprises a frame formed by connecting a front wheel frame and a rear wheel frame which are obliquely arranged, a front wheel set, a rear wheel set, a seat and a handle arranged at the upper end of the rear wheel frame; the front wheel set comprises two front wheels and a front wheel shaft; the front wheel shaft is connected to the lower end of the front wheel frame through a gravity center offset steering structure; the rear wheel set comprises at least one rear wheel and a rear wheel axle; the rear wheel shaft is connected to the lower end of the rear wheel frame; an included angle between the front wheel frame and the rear wheel frame is an obtuse angle; the seat is installed at the middle position of the rear wheel frame.

In the improved scheme of the balance car, front foot pedals are respectively arranged on two sides of the middle lower part of the front wheel frame.

In the improved scheme of the balance car, rear foot pedals are arranged on two sides of the lower part of the rear wheel frame.

In the improved scheme of the balance car, the rear wheel frame is formed by fixedly connecting two parallel rods; the upper end of the front wheel frame is clamped between the two parallel rods and is connected by a folding and unfolding swinging shaft which spans between the two parallel rods in a swinging way; the front wheel frame is controlled to be folded and unfolded by a folding device.

In an improved scheme of the balance car, the folding and unfolding device comprises a button, a button reset spring, a button seat, a folding and unfolding pin driven by the button to fold and unfold the car, and two pin locking seats; the button and the button reset spring are vertically arranged in the button seat, and the button can slide in the button seat in a straight line; the button seat is arranged in the upper end of the front wheel frame; the folding and unfolding swing shaft transversely penetrates through the round holes of the front wheel frame and the button seat and the shaft avoiding strip-shaped hole of the button; the pin locking seat is clamped between the front wheel frame and the adjacent parallel rod and is connected with the parallel rod in a non-rotatable way; the pin locking seat is provided with a pin falling groove which is composed of an arc-shaped sliding groove taking the folding and unfolding swinging shaft as the center of a circle, and an unfolding clamping groove and a folding clamping groove which are respectively positioned at two ends of the arc-shaped sliding groove on the side facing the front wheel frame; the extension lines of the central lines of the unfolding clamping groove and the folding clamping groove are intersected on the circle center of the folding and unfolding pendulum shaft; the folding pin transversely penetrates through the pin avoiding strip-shaped holes of the front wheel frame and the button seat and the extending arms at the rear two ends of the pin round hole of the button and respectively falls into the pin falling groove of the pin locking seat; when the front wheel frame and the rear wheel frame are in an unfolded state, the central line of the unfolding clamping groove is superposed with the sliding track of the button in the button seat, and when the front wheel frame and the rear wheel frame are in a folded state, the central line of the folding clamping groove is superposed with the sliding track of the button in the button seat.

In the improved scheme of the balance car, the upper end of the front wheel frame is inserted into a cylindrical folding and unfolding swinging seat; the outer diameter of the folding and unfolding swinging seat corresponds to that of the pin locking seat, and the folding and unfolding swinging seat is clamped between the two pin locking seats; the folding and unfolding swing seat is provided with a round hole for the folding and unfolding swing shaft to transversely pass through and a pin avoiding strip-shaped hole for the folding and unfolding pin to transversely pass through.

In the improvement of the balance car, the front end of the seat is connected in a swinging way through a seat swinging shaft which spans between the two parallel rods; a seat supporting tube is connected to the lower part of the seat in a swinging way; the seat supporting tube is connected between the two parallel rods through a detachable structure; the detachable structure comprises a supporting tube fixing sleeve and a spring plate, wherein the supporting tube fixing sleeve is connected between the two parallel rods through a fixing sleeve swinging shaft in a swinging mode, and the spring plate is arranged at the lower end of the seat supporting tube and is provided with a spring pin; the upper end of the supporting tube fixing sleeve is provided with an elastic pin hole for the elastic pin to be ejected out to lock the seat supporting tube.

In the improved scheme of the balance car, a supporting tube accommodating groove is arranged in the bottom of the seat; and a notch is arranged at the upper end of the supporting tube fixing sleeve.

In the improved scheme of the balance car, a push rod insertion hole which is inclined backwards is arranged at the tail part of the seat.

Compared with the prior art, the beneficial effects of the utility model are that: owing to adopt the "income" style of calligraphy frame that the front wheel carrier that sets up by the slope and the back wheel carrier are connected, handle and seat are established respectively on the upper end and the middle part position of back wheel carrier, and the infant sits on the seat and holds the back on the handle like this, just can promote the balance car with the heel brace on the ground and slided and played, this compares and is similar to the bicycle formula balance car of the rule of a thousand at present, the utility model discloses an interesting and play the sensation and be different from bicycle formula balance car, more can attract infant's interest of playing even.

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

[ description of the drawings ]

Fig. 1 is a first perspective view (expanded state) of the embodiment of the present invention;

fig. 2 is a schematic perspective view of a second embodiment of the present invention (folded state);

FIG. 3 is a schematic view of the use of the embodiment of the present invention as a hand balance;

fig. 4 is a partial assembly schematic of an embodiment of the invention;

fig. 5 is a schematic structural diagram of an embodiment of the present invention;

fig. 6 is an enlarged view of a portion I of fig. 4.

[ detailed description ] embodiments

The utility model relates to a balance car, as shown in figures 1 to 6, comprising a frame which is in a shape of Chinese character 'jin' and is formed by connecting a front wheel frame 1 and a rear wheel frame 2 which are arranged in an inclined way, a front wheel group 3, a rear wheel group 4, a seat 5 and a handle 6 arranged at the upper end of the rear wheel frame 2; the front wheel set 3 comprises two front wheels 31 and a front wheel shaft 32; the front wheel shaft 32 is connected to the lower end of the front wheel frame 1 through a gravity center offset steering structure; the rear wheel set 4 comprises at least one rear wheel 41 and a rear wheel axle 42; the rear wheel axle 42 is connected to the lower end of the rear wheel frame 2; the gravity center shifting steering structure enables the front wheel to swing to realize steering when the gravity center shifts, the steering amplitude is not large generally, the steering amplitude is common on vehicles for children such as scooters and the like to play, and detailed description is not needed; an included angle between the front wheel frame 1 and the rear wheel frame 2 is an obtuse angle, so that the balance car is stable when sliding; the seat 5 is arranged at the middle position of the rear wheel frame 2, so that an infant of 1-3 years old can be ridden on the ground by feet after sitting on the seat and holding the handle; when the bicycle is required to be steered, the front wheel set can swing to steer by slightly tilting the bicycle body; of course, the body of the player is inclined to one side when the player is relatively young and starts to learn to ride the bicycle, so that the balance car is basically in a steering state at this time.

From the above, owing to adopt the "income" style of calligraphy frame that is linked by the preceding wheel carrier 1 that sets up of slope and back wheel carrier 2, handle 6 and seat 5 are established respectively on the upper end and the middle part position of back wheel carrier 2, and the infant sits and holds the back on the handle on the seat like this, just can promote the balance car with the heel brace and slided and played on the ground, this compares with the bicycle formula balance car that is similar to at present at a glance, the utility model discloses an interest and play sensation are different from bicycle formula balance car, more can attract infant's interest of playing even (because of its fresh sense is stronger).

In the present embodiment, as shown in fig. 1, front pedals 11 are respectively disposed on two sides of the middle-lower portion of the front wheel frame 1, so that when an infant slides and plays with pedals, the infant may temporarily lift the feet to place the feet on the front pedals to slide for a short period, and the style of alternately stepping and lifting the feet to place the feet on the front pedals to play with may be used to exercise the body balance of the infant and to enhance the interest of the infant during playing. Preferably, the rear foot rest 21 is provided on both sides of the lower portion of the rear wheel frame 2, so that when a child older is playing, the foot can be placed on the rear foot rest 21 to make the body lean forward for sliding play, thereby further enhancing the interest of the child during playing.

The front wheel frame 1 and the rear wheel frame 2 can be fixedly connected together in a welding or bolt connection mode, and in the embodiment, the front wheel frame and the rear wheel frame are connected together in a swinging mode and can be folded in a folding mode, and therefore the purposes of saving storage space and being convenient to carry are achieved. For this purpose, the rear wheel frame 2 is formed by fixedly connecting two parallel rods 22; the upper end of the front wheel frame 1 is clamped between the two parallel rods 22 and is connected in a swinging way by a folding and unfolding swinging shaft 14 which spans between the two parallel rods 22; the front wheel frame 1 is controlled to be folded and unfolded by a folding device 7. In the present embodiment, as shown in fig. 4 and 6, the folding device 7 includes a button 71, a button return spring 72, a button seat 73, a folding pin 74 driven by the button 71 to fold the vehicle, and two pin locking seats 75; the button 71 and the button return spring 72 are vertically arranged in the button seat 73, and the button 71 can slide linearly in the button seat 73; the button seat 73 is installed in the upper end of the front wheel frame 1; the folding and unfolding swing shaft 14 transversely penetrates through the round holes 12 and 731 of the front wheel frame 1 and the button seat 73 and the shaft avoiding strip-shaped hole 711 of the button 71, so that the folding and unfolding swing shaft does not block the straight sliding of the button 71 in the button seat 73; the pin locking socket 75 is sandwiched between the front wheel frame 1 and the adjacent parallel bar 22 and is connected to the parallel bar in a non-rotatable manner (i.e., when the front and rear wheel frames are folded and unfolded, the pin locking socket 75 and the parallel bar 22 swing synchronously, they can be fixedly connected together by screws, and here, the pin locking socket 75 is locked outside the parallel bar by a straight groove 754 on the outer side thereof to swing synchronously); the side of the pin locking seat 75 facing the front wheel frame 1 is provided with a pin falling groove composed of an arc chute 751 taking the folding and unfolding swing shaft 14 as a circle center and an unfolding clamping groove 752 and a folding clamping groove 753 respectively positioned at two ends of the arc chute 751; the extension lines of the central lines of the unfolding clamp groove 752 and the folding clamp groove 753 intersect at the center of the folding and unfolding pendulum shaft 14; the extending pin 74 passes through the pin avoiding strip- shaped holes 13 and 732 of the front wheel frame 1 and the button seat 73 and the extending arms at the rear two ends of the pin round hole 712 of the button 71 and respectively falls into the pin falling groove of the pin locking seat 75; when the front wheel frame 1 and the rear wheel frame 2 are in an unfolded state, as seen from the front of the balance car, the center line of the unfolding clamping groove 752 is overlapped with the sliding track of the button 71 in the button seat 73, and when the front wheel frame 1 and the rear wheel frame 2 are in a folded state, the center line of the folding clamping groove 753 is overlapped with the sliding track of the button 71 in the button seat 73, so that when the button 71 is pressed, the button 71 overcomes the acting force of the button return spring 72, drives the folding pin 74 to slide along the pin avoiding strip-shaped holes 13 and 732 of the front wheel frame 1 and the button seat 73, and simultaneously, the folding pin 74 slides away from the unfolding clamping groove 752 or the folding clamping groove 753, and when the folding pin 74 completely slides away from the unfolding clamping groove 752 or the clamping groove 753, the balance car can be folded or unfolded.

To avoid safer use in the folded-out position, as shown in fig. 4 to 6, the upper end of the front wheel frame 1 is inserted into a cylindrical folded-out swinging seat 76; the retracting swing seat 76 corresponds to the outer diameter of the pin locking seat 75 and is sandwiched between the two pin locking seats 75; the retracting and extending swing seat 76 is provided with a circular hole 761 through which the retracting and extending swing shaft 14 passes and a pin escape bar hole 762 through which the retracting and extending pin 74 passes.

Preferably, the seat is also arranged to be swingably collapsible for space saving and storage, as shown in fig. 4, 5, for this purpose: the front end of the seat 5 is connected in a swinging way through a seat swinging shaft 51 which spans between the two parallel rods 22; a seat support pipe 52 is connected to the lower part of the seat 5 in a swinging manner; the seat support tube 52 is connected between the two parallel rods 22 by a detachable structure 8; the detachable structure 8 comprises a supporting tube fixing sleeve 82 which is connected between the two parallel rods 22 in a swinging way through a fixing sleeve swinging shaft 81, and an elastic sheet 84 which is arranged at the lower end of the seat supporting tube 52 and is provided with an elastic pin 83; a spring pin hole 821 for the spring pin 83 to spring out to lock the seat support tube 52 is provided at the upper end of the support tube fixing sleeve 82, so that the seat 5 is supported by the seat support tube 52 with one end inserted into the support tube fixing sleeve 82 when in use; when not in use, the seat 5 can be swung to the rear wheel frame 2 to fold the seat after the lower end of the support tube is pulled out from the support tube fixing sleeve 82 by pressing the elastic pin 83. In this embodiment, a support tube receiving groove 53 is provided in the bottom of the seat 5 to receive the support tube; a notch 822 is provided at the upper end of the support tube retainer 82 to facilitate the support tube swinging in and out of the retainer when inserting and pulling the support tube.

In this embodiment, there is only one rear wheel 41, but of course there may be two rear wheels, and in this case, these two rear wheels may be configured to be swingable for steering, like the front wheels, or may be configured not to be swingable. That is, the balance car may be three-wheeled or four-wheeled, and its front wheels may be two steerable wheels and its rear wheels may be single-wheeled or two-wheeled.

In this embodiment, as shown in fig. 1, a push rod insertion hole 54 inclined backward is provided at the rear of the seat 5, so that when the push rod 9 is inserted into the push rod insertion hole 54, the balance car can be used as a balance car by hand pushing, as shown in fig. 3, thereby enriching the use of the balance car.

Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims. Therefore, the detailed description of the embodiments of the present disclosure is to be construed as merely illustrative, and not limitative of the present disclosure, but rather to limit the scope thereof by the appended claims.

Claims (9)

1. A balance car is characterized by comprising a frame, a front wheel set, a rear wheel set, a seat and a handle, wherein the frame is formed by connecting a front wheel frame and a rear wheel frame which are obliquely arranged; the front wheel set comprises two front wheels and a front wheel shaft; the front wheel shaft is connected to the lower end of the front wheel frame through a gravity center offset steering structure; the rear wheel set comprises at least one rear wheel and a rear wheel axle; the rear wheel shaft is connected to the lower end of the rear wheel frame; an included angle between the front wheel frame and the rear wheel frame is an obtuse angle; the seat is installed at the middle position of the rear wheel frame.

2. The balance car of claim 1, wherein front pedals are respectively provided on both sides of a middle lower portion of the front wheel frame.

3. The balance car of claim 2, wherein rear step plates are provided on both sides of a lower portion of the rear wheel frame.

4. The balance car of any one of claims 1 to 3, wherein the rear wheel frame is formed by fixedly connecting two parallel rods; the upper end of the front wheel frame is clamped between the two parallel rods and is connected by a folding and unfolding swinging shaft which spans between the two parallel rods in a swinging way; the front wheel frame is controlled to be folded and unfolded by a folding device.

5. The balance bike as claimed in claim 4, wherein the folding device comprises a button, a button return spring, a button seat, a folding pin driven by the button to fold the bike, and two pin locking seats; the button and the button reset spring are vertically arranged in the button seat, and the button can slide in the button seat in a straight line; the button seat is arranged in the upper end of the front wheel frame; the folding and unfolding swing shaft transversely penetrates through the round holes of the front wheel frame and the button seat and the shaft avoiding strip-shaped hole of the button; the pin locking seat is clamped between the front wheel frame and the adjacent parallel rod and is connected with the parallel rod in a non-rotatable way; the pin locking seat is provided with a pin falling groove which is composed of an arc-shaped sliding groove taking the folding and unfolding swinging shaft as the center of a circle, and an unfolding clamping groove and a folding clamping groove which are respectively positioned at two ends of the arc-shaped sliding groove on the side facing the front wheel frame; the extension lines of the central lines of the unfolding clamping groove and the folding clamping groove are intersected on the circle center of the folding and unfolding pendulum shaft; the folding pin transversely penetrates through the pin avoiding strip-shaped holes of the front wheel frame and the button seat and the extending arms at the rear two ends of the pin round hole of the button and respectively falls into the pin falling groove of the pin locking seat; when the front wheel frame and the rear wheel frame are in an unfolded state, the central line of the unfolding clamping groove is superposed with the sliding track of the button in the button seat, and when the front wheel frame and the rear wheel frame are in a folded state, the central line of the folding clamping groove is superposed with the sliding track of the button in the button seat.

6. The balance car of claim 5, wherein the upper end of the front wheel frame is inserted into a cylindrical folding and unfolding swing seat; the outer diameter of the folding and unfolding swinging seat corresponds to that of the pin locking seat, and the folding and unfolding swinging seat is clamped between the two pin locking seats; the folding and unfolding swing seat is provided with a round hole for the folding and unfolding swing shaft to transversely pass through and a pin avoiding strip-shaped hole for the folding and unfolding pin to transversely pass through.

7. The balance vehicle of claim 6, wherein the front end of the seat is pivotally connected by a seat pivot shaft spanning between the two parallel bars; a seat supporting tube is connected to the lower part of the seat in a swinging way; the seat supporting tube is connected between the two parallel rods through a detachable structure; the detachable structure comprises a supporting tube fixing sleeve and a spring plate, wherein the supporting tube fixing sleeve is connected between the two parallel rods through a fixing sleeve swinging shaft in a swinging mode, and the spring plate is arranged at the lower end of the seat supporting tube and is provided with a spring pin; the upper end of the supporting tube fixing sleeve is provided with an elastic pin hole for the elastic pin to be ejected out to lock the seat supporting tube.

8. The balance car of claim 7, wherein a support tube receiving groove is provided in the seat bottom; and a notch is arranged at the upper end of the supporting tube fixing sleeve.

9. The balance vehicle of any one of claims 5 to 8, wherein a rearwardly inclined push rod socket is provided at the rear of the seat.

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