Double-sided toy car capable of vertical turning within sealed track

Abstract

This double-sided toy car is capable of vertical turning within a sealed track. The double-sided toy car includes a car body, a front wheel, and a rear wheel. The rear wheel includes a pair of upper driving wheels and a pair of lower driving wheels. A maximum distance between an upper end and a lower end of the front wheel is less than or equal to a maximum distance between the upper and lower driving wheels after the rear wheel is maximally elastically contracted. The maximum distance is less than or equal to a height of the sealed track, therefore ensuring that the double-sided car can smoothly pass through a vertical turning segment. However, the maximum distance between the upper and lower driving wheels before the rear wheel is elastically contracted is greater than the height of the sealed track.

Claims

1. A double-sided toy car capable of vertical turning within a sealed track comprising: a car body (1); a front wheel (2) arranged at a front portion of the car body (1), protruding above and below the car body (1) and acting as a driven wheel; and a rear wheel (3) arranged at a rear portion of the car body (1) and comprising a pair of upper driving wheels (32) protruding above the car body (1) and a pair of lower driving wheels (31) protruding below the car body (1), wherein the rear wheel (3) is designed as a wheel having an ability of elastically deformable contraction, a maximum distance between an upper end and a lower end of the front wheel (2) is less than or equal to a maximum distance between the upper and lower driving wheels after the rear wheel (3) is maximally elastically contracted, the maximum distance between the upper and lower driving wheels after the rear wheel (3) is maximally elastically contracted is less than or equal to a height of a sealed track (4) fitted with the toy car, however a maximum distance between the upper and lower driving wheels before the rear wheel (3) is elastically contracted is greater than the height of the sealed track (4).

2. The double-sided toy car according to claim 1, wherein a wheel surface of each of the upper driving wheels (32) and/or the lower driving wheels (31) of the rear wheel (3) is provided with an elastic saw tooth (30), so as to achieve elastic contraction of the rear wheel.

3. The double-sided toy car according to claim 2, wherein the elastic saw tooth (30) is configured to be a plurality of circular elastic convex columns spaced from each other and encircling a soft ring, so as to form a jagged wheel ring, and the wheel ring is fitted over the wheel surface of each of the upper driving wheels (32) and/or the lower driving wheels (31).

4. The double-sided toy car according to claim 1, wherein the front wheel (2) is configured to be one driven wheel having a diameter larger than a height of the car body (1) and protruding above and below the car body (1), the driven wheel is rotatably connected to a middle position of the front portion of the car body (1) through a rotating shaft, and the diameter of the driven wheel is less than or equal to the maximum distance between the upper and lower driving wheels after the rear wheel (3) is maximally elastically contracted.

5. The double-sided toy car according to claim 1, wherein the front wheel (2) is configured to be a pair of driven wheels each having a diameter larger than a height of the car body (1) and protruding above and below the car body (1), the pair of driven wheels are rotatably connected to two side positions of the front portion of the car body (1) through a rotating shaft, and the diameter of each the driven wheel is less than or equal to the maximum distance between the upper and lower driving wheels (3) after the rear wheel is maximally elastically contracted.

6. The double-sided toy car according to claim 1, wherein the front wheel (2) comprises one upper driven wheel protruding above the car body (1) and a pair of lower driven wheels protruding below the car body (1), the upper driven wheel is connected to a middle position of the front portion of the car body (1) adjacent to an upper end through a rotating shaft, the pair of lower driven wheels is connected to two side positions of the front portion of the car body (1) adjacent to a lower end through a rotating shaft, and a maximum perpendicular distance between the upper and lower driven wheels is less than or equal to the maximum distance between the upper and lower driving wheels after the rear wheel (3) is maximally elastically contracted.

7. The double-sided toy car according to claim 1, wherein the front wheel (2) comprises a pair of upper driven wheels protruding above the car body (1) and one lower driven wheel protruding below the car body (1), the pair of upper driven wheels is connected to two side positions of the front portion of the car body (1) adjacent to an upper end through a rotating shaft, a pair of lower driven wheels is connected to a middle position of the front portion of the car body (1) adjacent to a lower end through a rotating shaft, and a maximum perpendicular distance between the upper and lower driven wheels is less than or equal to the maximum distance between the upper and lower driving wheels after the rear wheel (3) is maximally elastically contracted.

8. The double-sided toy car according to claim 1, wherein the front wheel (2) comprises a pair of upper driven wheels (22) protruding above the car body (1) and a pair of lower driven wheels (21) protruding below the car body, the upper driven wheels (22) are connected to two side positions of the front portion of the car body (1) adjacent to an upper end through a rotating shaft, the lower driven wheels (21) are connected to two side positions of the front portion of the car body (1) adjacent to an lower end through a rotating shaft, and a maximum perpendicular distance between the upper and lower driven wheels is less than or equal to the maximum distance between the upper and lower driving wheels after the rear wheel (3) is maximally elastically contracted.

9. The double-sided toy car according to claim 1, wherein a rotating shaft core of the upper driving wheels (32) and a rotating shaft core of the lower driving wheels (31) are located in a same perpendicular cross section perpendicular to the car body (1).

10. The double-sided toy car according to claim 1, wherein the upper driving wheels (32) and the lower driving wheels (31) are driven by one transmission structure, thus achieving that the upper driving wheels (32) and the lower driving wheels (31) rotate in different directions and at a same speed.

11. The double-sided toy car according to claim 2, wherein a rotating shaft core of the upper driving wheels (32) and a rotating shaft core of the lower driving wheels (31) are located in a same perpendicular cross section perpendicular to the car body (1).

12. The double-sided toy car according to claim 2, wherein the upper driving wheels (32) and the lower driving wheels (31) are driven by one transmission structure, thus achieving that the upper driving wheels (32) and the lower driving wheels (31) rotate in different directions and at a same speed.

13. The double-sided toy car according to claim 1, wherein the pair of upper driving wheels (32) and the pair of lower driving wheels (31) are in contact with the sealed track (4) and rotate in opposite directions when the double-sided toy car vertically turns within the sealed track (4).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective schematic view of a double-sided toy car according to the present disclosure;

(2) FIG. 2 is a perspective schematic view of a double-sided toy car in a sealed track according to the present disclosure;

(3) FIG. 3 is a side schematic view of the double-sided toy car at a horizontal segment of the sealed track (sketch) shown in FIG. 2;

(4) FIG. 4 is a side schematic view of the double-sided toy car at a turning segment of the sealed track (sketch) shown in FIG. 2.

DETAILED DESCRIPTION

(5) As shown in FIGS. 1-4, a double-sided toy car capable of vertical turning within a sealed track according to the present disclosure includes a car body 1, a front wheel 2 arranged at a front portion of the car body 1, protruding above and below the car body 1 and acting as a driven wheel, and a rear wheel 3 arranged at a rear portion of the car body 1 and including a pair of upper driving wheels 32 protruding above the car body 1 and a pair of lower driving wheels 31 protruding below the car body 1. In which the rear wheel 3 is designed as a wheel having an ability of elastically deformable contraction, a maximum distance between an upper end and a lower end of the front wheel 2 is less than or equal to a maximum distance between the upper and lower driving wheels after the rear wheel 3 is maximally elastically contracted, the maximum distance between the upper and lower driving wheels after the rear wheel 3 is maximally elastically contracted is less than or equal to a height of a sealed track 4 fitted with the toy car, however a maximum distance between the upper and lower driving wheels before the rear wheel 3 is elastically contracted is greater than the height of the sealed track 4, thereby enabling the upper and lower driving wheels of the double-sided car within the track 4 to be in contact with upper and lower track surfaces respectively, ensuring a stable running process, achieving a crawling on a vertical track, and ensuring that the double-sided car can pass through a vertical turning segment smoothly.

(6) As shown in FIG. 1, a wheel surface of each of the upper driving wheels 32 and the lower driving wheels 31 according to the embodiment is provided with an elastic saw tooth 30, so as to achieve the elastic contraction of the rear wheel. The elastic saw tooth 30 is configured to be a plurality of circular elastic convex columns spaced from each other and encircling a soft ring, so as to form a jagged wheel ring. The wheel ring is fitted over the wheel surface of each of the upper driving wheels 32 and the lower driving wheels 31 during use, replacement and disassembly thereof are convenient, and compared with the prior art, the solution is simpler and practical without influence on the driving force of the double-sided car, moreover the elastic saw tooth 30 is in contact with the track surfaces through point contact when the double-sided car is running, so that damages caused by friction between the wheels and the track surfaces can be reduced effectively as well. In the embodiment, the solution adopted by the front wheel 2 is that the front wheel 2 includes a pair of upper driven wheels 22 protruding above the car body 1 and a pair of lower driven wheels 21 protruding below the car body 1. The upper driven wheels 22 are rotatably connected to two side positions of the front portion of the car body 1 adjacent to an upper end through a rotating shaft, and the lower driven wheels 21 are rotatably connected to two side positions of the front portion of the car body 1 adjacent to an lower end through a rotating shaft. In the embodiment, a rotating shaft core of the upper driving wheels 32 and an rotating shaft core of the lower driving wheels 31 are located in a same perpendicular cross section perpendicular to the car body 1, moreover the upper driving wheels 32 and the lower driving wheels 31 are driven by one transmission structure, so that the upper driving wheels 32 and the lower driving wheels 31 rotate in different directions and at a same speed.

(7) As shown in FIGS. 3 and 4, reference numeral D in the drawings represents a maximum perpendicular distance between the upper and lower driving wheels of the front wheel 2, we suppose that the elastic saw tooth of rear wheel 3 in the condition shown in FIG. 3 exactly has no elastic deformation, at the moment, the maximum distance between the upper and lower driving wheels of the rear wheel 3 without elastic contraction is equal to a connection distance between points where the upper and lower driving wheels are in contact with the upper and lower track surfaces respectively, which is denoted by L, the height of the upper and lower tracks is denoted by H, and a maximum amount of the elastic contraction of the elastic saw tooth 30 is denoted by R. It can be known from FIG. 3 that, D is significantly less than L minus R, so when the car body 1 is placed on the horizontal plane, the car body 1 presents a state of inclining forwards, so regarding the rear wheel 3, the upper driving wheels 32 are placed at a front position relative to the lower driving wheels 31, and at the moment L is greater than H. As shown in FIG. 4, the car body 1 in the condition shown in FIG. 4 shows that the front wheel 2 has been entered the vertical turning segment while the rear wheel 3 is still at a horizontal track segment, at the moment since the front wheel 2 is uplifted, the upper driving wheels 32 moves backwards relative to the lower driving wheels 31, hence the elastic saw tooth 30 begins to be elastically contracted. When the upper driving wheels 32 moves to a position right above the lower driving wheels 31 as shown in FIG. 4, at the moment the connection distance between points where the upper and lower driving wheels are in contact with the upper and lower track surfaces respectively is equal to H, and the elastic contraction at the moment is most serious, in order to avoid that the double-sided car is stuck at the position, the amount of elastic contraction must be less than or equal to R, that is, L minus R must be less than or equal to H, so as to ensure that the double-sided car cannot be stuck.

(8) Although the present disclosure is described with reference to specific embodiments, however these descriptions are not meant to limit the present disclosure. Referring to the descriptions of the present disclosure, some other variants of the disclosed embodiments can be expected by those skilled in the art, and the variants should be within the scope defined by the corresponding claims.