CN219687524U - Toy vehicle and front foot assembly thereof - Google Patents

Abstract

The embodiment of the utility model provides a toy vehicle and a front foot component thereof, wherein the front foot component comprises a base, a vertical rod, a first wheel shaft and a first roller, the bottom end of the vertical rod is fixed at the middle section of the base, the top end of the vertical rod extends upwards to be connected with a steering wheel, the first wheel shaft is installed on the base, the first roller is pivoted on the first wheel shaft, a mounting groove with a notch is formed on the base, the mounting groove is internally provided with support bayonets with openings for the first wheel shaft to be correspondingly clamped in, a through hole penetrating to the bottom surface of the base is formed in the middle section of the bottom wall of the mounting groove, the center of the first roller is provided with a shaft hole and is sleeved at the middle section of the first wheel shaft by means of the shaft hole, the two ends of the first wheel shaft are respectively clamped in the corresponding support bayonets, the bottom of the first roller extends out from the bottom surface of the base through the through hole, and the front foot component further comprises a pressing piece which is inserted into the two ends of the mounting groove and is matched with the support bayonets to clamp and limit the corresponding ends of the first wheel shaft. The roller mounting structure can be effectively protected.

Description

Toy vehicle and front foot assembly thereof

Technical Field

The embodiment of the utility model relates to the technical field of toy vehicles, in particular to a toy vehicle and a front foot assembly thereof.

Background

Existing toy vehicles such as swing cars, children exercise bicycles and the like are provided with a front foot assembly at the bottom of the front end of a vehicle body, wherein the front foot assembly comprises a base, a vertical rod, an axle and a roller, the bottom end of the vertical rod is fixed on the middle section of the base, the top end of the vertical rod extends upwards to be connected to a steering wheel of the toy vehicle, the axle is installed on the base, and the roller is pivoted on the axle. The roller is usually provided with a shaft hole at the center of the roller, the roller is sleeved on the wheel shaft by the shaft hole, and a nut is screwed at the tail end of the wheel shaft to lock the roller. Because the nut is directly exposed outside, phenomena such as corrosion, blocking and the like are easy to occur, and the nut is easy to loosen due to the impact of foreign objects.

Disclosure of Invention

The technical problem to be solved by the embodiment of the utility model is to provide a front foot assembly of a toy vehicle, which can effectively protect a roller mounting structure.

The embodiment of the utility model further aims to solve the technical problem of providing a toy vehicle which can effectively protect the roller mounting structure.

In order to solve the above technical problems, the embodiment of the present utility model firstly provides the following technical solutions: the utility model provides a toy vehicle's front foot subassembly, includes base, bottom be fixed in the base middle section and the top upwards extends and is connected to the montant of toy vehicle's steering wheel, install in first shaft on the base and pivot locate the first gyro wheel of first shaft, be provided with the mounting groove of upwards seting up the notch on the base, the relative both ends in the mounting groove are formed with upwards setting up the opening respectively and are used for supplying first shaft corresponds the support bayonet socket of card income and be in the middle section of the tank bottom wall of mounting groove forms the perforation that runs through to the bottom surface of base, the wheel center department of first gyro wheel is provided with the shaft hole and is located with the help of the shaft hole cover the middle section of first shaft, the both ends of first shaft respectively the joint in the support bayonet socket that corresponds, the bottom of first gyro wheel passes the perforation stretches out from the bottom surface of base, front foot subassembly still includes from the notch inserts the both ends department and with support bayonet socket cooperation centre gripping is spacing the butt piece of the corresponding tip of first.

Further, the base comprises a top shell and a bottom shell which are fastened and fixed up and down, and the mounting groove is formed in the bottom shell.

Further, two ends of the mounting groove are respectively provided with a vertically arranged partition board near the perforation, two opposite ends of the mounting groove are respectively separated into a containing cavity, the supporting bayonets are formed on the partition board, two opposite ends of the first wheel axle are respectively clamped on the supporting bayonets and extend into the containing cavities, the pressing pieces are inserted into the containing cavities in a one-to-one correspondence manner and are pressed against the side surfaces of the first wheel axle, and the pressing faces of the first wheel axle and the bottom inner wall surfaces of the supporting bayonets are matched with the shapes of the side surfaces corresponding to the two ends of the first wheel axle.

Further, a limiting piece which is used for being abutted against the tail end face of the first wheel axle to prevent the first wheel axle from moving along the axial direction is arranged in the accommodating cavity.

Further, the pressing piece comprises a pressing piece inserted into the accommodating cavity to press against the tail end of the first wheel shaft, and a pressing part protruding from the bottom surface of the top shell to the bottom shell and pressing against the pressing piece to press and limit the pressing piece in the accommodating cavity; or, the pressing piece is integrally formed on the bottom surface of the top shell.

Furthermore, the bottom surface of the bottom shell is also provided with protection convex blocks at positions corresponding to the two upward side surfaces of the first roller shaft respectively, and the outer surfaces of the two protection convex blocks and the bottom end wheel surface of the first roller are surrounded to form a convex spherical surface.

Further, the first wheel axle is assembled on the first end of the base, the front foot assembly further comprises a second wheel axle transversely penetrating through the second end of the base and extending from two sides of the base at two opposite ends, and second rollers respectively pivoted to two opposite ends of the second wheel axle, each second roller axle is provided with a bearing, an inner ring of each bearing is sleeved on the second wheel axle and is relatively fixed with the second wheel axle, the tail end of the second wheel axle is in threaded connection with a nut limiting the second roller on the second wheel axle, and a wheel cover covering the nut is also buckled and fixed on the outer side face of the second roller.

Further, the diameter of the first roller is smaller than that of the second roller, and the installation height of the first wheel axle is not lower than that of the second wheel axle, or the installation height of the first wheel axle is lower than that of the second wheel axle, but the difference between the installation height of the first wheel axle and the installation height of the second wheel axle is smaller than the radius difference between the second roller and the first roller.

Further, the bottom surface of the top shell is provided with a plurality of locking posts with screw holes on the end surface, the top surface of the bottom shell is provided with a sleeve which corresponds to the locking posts one by one and is internally provided with a connecting hole which axially penetrates through the bottom shell, the tail end of the sleeve is also radially inwards protruded to form a first stop ring, when the top shell and the bottom shell are mutually butted, the locking posts are abutted with the sleeve, a connecting screw penetrates through the connecting hole in the sleeve and correspondingly screwed into the screw holes of the locking posts, and the head part of the connecting screw is abutted with the first stop ring; the middle section of the bottom shell is provided with a jack vertically penetrating the bottom shell, a second stop ring is formed by protruding inwards along the radial direction at the position close to the bottom end of the inner wall of the jack, a through hole for exposing the jack is correspondingly formed at the top surface of the top shell, a plurality of side planes symmetrically arranged around the central axis are arranged on the side surface of the vertical rod in an extending mode along the length direction, positioning convex strips for enabling the vertical rod to penetrate through the through hole only at a preset angle and be inserted into the jack are further formed in the middle of one side plane in a protruding mode, the cross sections of the vertical rod and the jack are mutually matched, a locking hole is further formed in the end face of the bottom end of the vertical rod, the vertical rod is inserted into the jack and is abutted to the second stop ring, and a locking screw is inserted from the bottom end hole of the jack and correspondingly screwed to the locking hole of the vertical rod correspondingly penetrates through the second stop ring, and the head of the locking screw is abutted to the second stop ring to lock the vertical rod.

On the other hand, in order to solve the above technical problems, the embodiment of the present utility model further provides the following technical solutions: a toy vehicle comprising a body, a front foot assembly assembled below the front end of the body and a steering wheel assembled above the front end of the body, the front foot assembly being any of the front foot assemblies described above.

After the technical scheme is adopted, the embodiment of the utility model has at least the following beneficial effects: according to the embodiment of the utility model, the mounting groove is formed on the base, the supporting bayonets are respectively formed at the opposite ends of the mounting groove, the middle section of the bottom wall of the mounting groove is formed with the through holes, the first roller is sleeved on the middle section of the first roller shaft by the shaft holes during specific assembly, then the first roller extends out of the bottom surface of the base through the through holes so as to realize rolling, meanwhile, the two ends of the first roller shaft are respectively clamped in the corresponding supporting bayonets, then the corresponding ends of the first roller shaft are clamped and limited by the cooperation of the pressing piece and the supporting bayonets, so that the stable positioning of the first roller shaft can be realized, and the mounting structure of the first roller can be effectively protected.

Drawings

Fig. 1 is a schematic exploded view of an alternative embodiment of a forefoot assembly of a toy vehicle of the present utility model.

Fig. 2 is a schematic diagram of an assembled configuration of an alternative embodiment of a forefoot assembly of a toy vehicle of the present utility model.

Fig. 3 is a schematic view of an alternative embodiment of a front foot assembly of a toy vehicle of the present utility model with a bottom shell having a first axle and a first roller assembled.

Fig. 4 is a schematic cross-sectional view of an alternative embodiment of a forefoot assembly of a toy vehicle of the present utility model at a first axle.

Fig. 5 is a schematic cross-sectional view of a further alternative embodiment of a toy vehicle forefoot assembly of the present utility model at a first axle.

Fig. 6 is a schematic diagram of an alternate embodiment of a forefoot assembly of a toy vehicle of the present utility model with a second roller and second axle in an exploded configuration.

Fig. 7 is a schematic view of an alternative embodiment of a toy vehicle forefoot assembly of the present utility model with the top shell flipped over.

Fig. 8 is a schematic cross-sectional view of an alternative embodiment of a forefoot assembly of a toy vehicle of the present utility model, with a base along an axial plane in the locking post.

Fig. 9 is a schematic cross-sectional view of an alternative embodiment of a forefoot assembly of a toy vehicle of the present utility model along the medial axis of the receptacle.

Fig. 10 is a schematic cross-sectional view of an alternative embodiment of a forefoot assembly of a toy vehicle of the present utility model along a cross-section of a receptacle.

Fig. 11 is a schematic perspective view of an alternate embodiment of a toy vehicle of the present utility model.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the specific examples. It should be understood that the following exemplary embodiments and descriptions are only for the purpose of illustrating the utility model and are not to be construed as limiting the utility model, and that the embodiments and features of the embodiments of the utility model may be combined with one another without conflict.

As shown in fig. 1-5, an alternative embodiment of the present utility model provides a front foot assembly a of a toy vehicle, which comprises a base 1, a vertical rod 3 with a bottom fixed to a middle section of the base 1 and a top extending upwards and connected to a steering wheel B of the toy vehicle, a first wheel axle 4 mounted on the base 1, and a first roller 5 pivoted on the first wheel axle 4, wherein a mounting groove 10 with a notch 10a formed upwards is provided on the base 1, opposite ends in the mounting groove 10 are respectively formed with a supporting notch 10B with an opening formed upwards for the first wheel axle 4 to be correspondingly clamped in, a through hole 10c penetrating to a bottom surface of the base 1 is formed in a middle section of a groove bottom wall of the mounting groove 10, a shaft hole 50 is provided at a wheel center of the first roller 5 and sleeved on the middle section of the first wheel axle 4 by means of the shaft hole 50, two ends of the first wheel axle 4 are respectively clamped in the corresponding supporting notches 10B, a bottom of the first roller 5 passes through the through hole 10c and protrudes from the bottom surface of the base 1, and the front foot assembly a clamping piece further comprises a notch 10a corresponding to be matched with the two ends 10a clamping piece and a clamping end part of the clamping piece 4.

According to the embodiment of the utility model, the mounting groove 10 is formed on the base 1, the supporting bayonets 10b are respectively formed at the opposite ends of the mounting groove 10, the perforated holes 10c are formed in the middle section of the bottom wall of the mounting groove 10, when the mounting groove is specifically assembled, the first roller 5 is sleeved on the middle section of the first roller shaft 4 by the shaft holes 50, then the first roller 5 extends out of the bottom surface of the base 1 through the perforated holes 10c so as to realize rolling, meanwhile, the two ends of the first roller shaft 4 are respectively clamped in the corresponding supporting bayonets 10b, then the corresponding ends of the first roller shaft 4 are clamped and limited by the cooperation of the pressing piece 6 and the supporting bayonets 10b, so that the stable positioning of the first roller shaft 4 can be realized, and the mounting structure of the first roller 5 can be effectively protected.

In particular, it will be appreciated that, in general, the side surfaces of the two ends of the first axle 4 are cylindrical or square, and for this purpose, as shown in fig. 1, the end of the pressing member 6 is generally provided with a pressing groove 6a adapted in shape to the side surfaces of the two ends of the first axle 4 to achieve pressing.

In an alternative embodiment of the present utility model, as shown in fig. 1 to 5, the base 1 includes a top case 12 and a bottom case 14 fastened to each other in a vertically snap-fit manner, and the mounting groove 10 is formed on the bottom case 14. In this embodiment, the base 1 adopts the top shell 12 and the bottom shell 14 fastened and fixed up and down, and the mounting groove 10 is formed in the bottom shell 14, so that the mounting structure of the first roller 5 can be effectively hidden inside the top shell 12 and the bottom shell 14, the protection can be effectively realized, and the appearance is more attractive.

In an alternative embodiment of the present utility model, as shown in fig. 1 to 5, two ends of the installation groove 10 are respectively formed with a vertically disposed partition plate 10d near the through hole 10c, and two opposite ends of the installation groove 10 are respectively separated into a receiving cavity 101, the support bayonet 10b is formed on the partition plate 10d, two opposite ends of the first axle 4 are respectively clamped in the support bayonet 10b and extend into the receiving cavity 101, the pressing pieces 6 are inserted into the receiving cavities 101 in a one-to-one correspondence manner and are pressed against the side surfaces of the first axle 4, and the pressing surfaces for abutting against the first axle 4 and the bottom inner wall surfaces of the support bayonet 10b are both adapted to the shapes of the side surfaces corresponding to the two ends of the first axle 4. In this embodiment, by forming the partition plates 10d at both ends of the mounting groove 10, the supporting bayonet 10b is conveniently formed thereon, and by correspondingly partitioning the accommodating chambers 101, the assembly of the pressing member 6 is facilitated, and the occupied space of the overall mounting structure is reduced.

In an alternative embodiment of the present utility model, as shown in fig. 3 to 5, a limiting piece 103 is further disposed in the accommodating cavity 101, and is used for abutting against the end face of the first axle 4 correspondingly, so as to prevent the first axle 4 from moving along the axial direction. In this embodiment, the limiting piece 103 is further provided, and the axial displacement travel of the first axle 4 is limited by the abutting of the limiting piece 103 with the end portion of the first axle 4, so that the first axle 4 is prevented from moving excessively in the axial direction and being separated from the support bayonet 10 b.

In an alternative embodiment of the present utility model, as shown in fig. 4, the pressing member 6 includes a pressing member 60 inserted into the accommodating chamber 101 to press against the end of the first axle 4, and a pressing portion 62 protruding from the bottom surface of the top case 12 toward the bottom case 14 and pressing against the pressing member 60 to press and limit the pressing member 60 to the accommodating chamber 101; alternatively, as shown in fig. 5, the pressing member 6 is integrally formed on the bottom surface of the top case 12. In this embodiment, the pressing block 60 is inserted into the accommodating cavity 101 to directly press the end of the first axle 3, and when the top shell 12 is buckled with the bottom shell 14, the pressing part 62 on the bottom surface of the top shell 12 presses on the pressing block 60 to prevent the pressing block 60 from falling out of the Rong Naqiang, so that the pressing limit of the first axle 4 can be effectively realized; or, when the top shell 12 is buckled with the bottom shell 14, the pressing piece 6 integrally formed on the bottom surface of the top shell 12 is directly inserted into the accommodating cavity 101 to press against the tail end of the first wheel axle 4, so that the pressing and limiting of the first wheel axle 4 are realized.

In an alternative embodiment of the present utility model, as shown in fig. 1, 2, 4 and 5, the bottom surface of the bottom shell 14 is further provided with protection protrusions 14a at positions corresponding to two lateral surfaces of the first roller 5 in the axial direction, and the outer surfaces of the two protection protrusions 14a and the bottom roller surface of the first roller 5 are surrounded to form a convex spherical surface. In this embodiment, the protection bumps 14a are disposed on two sides of the bottom surface of the bottom case 14 corresponding to the first roller 5, so that the first roller 5 can be effectively protected from two sides; and the outer surfaces of the two protection convex blocks 14a and the bottom end wheel surface of the first roller 5 are surrounded to form a convex spherical surface, so that the interference of the protection convex blocks 14a on the rolling of the first roller 5 is avoided.

In particular, as shown in fig. 1, a plurality of end grooves 52 uniformly distributed along the circumferential direction of the first roller 5 are further formed on two axial sides of the first roller 5 around the shaft hole 50. The production cost of the first roller 5 can be effectively reduced, and the structural strength of the first roller 5 can be enhanced.

In an alternative embodiment of the present utility model, as shown in fig. 1, 2 and 6, the first axle 4 is assembled on the first end of the base 1, the front foot assembly a further includes a second axle 7 transversely penetrating the second end of the base 1 and extending from two sides of the base 1 at two opposite ends, and second rollers 8 pivotally connected to two opposite ends of the second axle 7, a bearing 80 is disposed at an axle center of each second roller 8, an inner ring of the bearing 50 is sleeved on the second axle 7 and is fixed opposite to the second axle 7, a nut 70 for limiting the second roller 8 on the second axle 7 is screwed at an end of the second axle 7, and a wheel cover 82 covering the nut 70 is further fastened and fixed on an outer side surface of the second roller 8. In this embodiment, the second wheel axle 7 and the second roller 8 are further provided, so that the first roller 5 and the second roller 8 are respectively mounted on the first end and the second end of the base 1, and the rolling of the forefoot component a can be better guided; the installation of the second roller 8 and the second wheel shaft 7 can be effectively realized by arranging the bearing 50 and the nut 70, so that the smooth rotation of the second wheel shaft 7 is ensured; by providing the wheel cover 82, the nut 70 inside can be effectively protected.

In a specific implementation, as shown in fig. 6, the wheel cover 82 may be fastened to the second roller 8 by means of fastening posts 821 protruding from the inner side surface toward the second roller 8 and fastening corresponding posts 84 on the side surface of the second roller 8.

In an alternative embodiment of the utility model, the diameter of the first roller 5 is smaller than the diameter of the second roller 8, and the mounting height of the first axle 4 is not lower than the mounting height of the second axle 7, or the mounting height of the first axle 4 is lower than the second axle 7 but the difference between the mounting height of the first axle 4 and the mounting height of the second axle 7 is smaller than the difference between the radii of the second roller 8 and the first roller 5. Since the diameter of the first roller 5 is smaller than that of the second roller 8, the first roller 5 does not contact the ground but does not work when the toy vehicle is traveling in a normal straight line, but the first roller 5 contacts the ground when the vehicle body is inclined to a certain angle when the toy vehicle is turned, thereby effectively avoiding the toppling over of the toy vehicle due to the overlarge inclination angle.

In an alternative embodiment of the present utility model, as shown in fig. 3 and fig. 7-10, the bottom surface of the top shell 12 is provided with a plurality of locking posts 121 with screw holes 121a on the end surface, the top surface of the bottom shell 14 is provided with a sleeve 141 corresponding to the locking posts 121 one by one and internally provided with a connecting hole 141a axially penetrating the bottom shell 14, the tail end of the sleeve 141 is further radially inwards protruded to form a first stop ring 141b, when the top shell 12 and the bottom shell 14 are butted with each other, the locking posts 121 are abutted with the sleeve 141, a connecting screw 16 passes through the connecting hole 141a inside the sleeve 141 and correspondingly is screwed into the screw holes 121a of the locking posts 121, and the head of the connecting screw 16 is abutted with the first stop ring 141b; the middle section of the bottom shell 14 is provided with a jack 143 vertically penetrating the bottom shell 14, the bottom end of the inner wall of the jack 143 is further provided with a second stop ring 143a protruding inwards in the radial direction, the top surface of the top shell 12 is correspondingly provided with a through hole 123 for exposing the jack 143, the side surface of the vertical rod 3 is provided with a plurality of side planes 30 extending along the length direction, the side planes are symmetrically arranged around the central axis, one middle part of the side planes 30 is further provided with a positioning convex strip 301 for enabling the vertical rod 3 to pass through the through hole 123 only at a preset angle and be inserted into the jack 143, the cross sections of the vertical rod 3 and the jack 143 are mutually matched, the bottom end surface of the vertical rod 3 is further provided with a locking hole 32, the vertical rod 3 is inserted into the jack 143 and is abutted against the second stop ring 143a, in addition, the locking screw 18 is inserted from the bottom end hole opening of the jack 143 and correspondingly screwed with the locking hole 32 of the vertical rod 3 through the second stop ring 143a, and the head of the locking screw 18 is abutted against the second stop ring 123 to the vertical rod 3.

In the embodiment, the locking post 121 with the screw hole 121a and the sleeve 141 with the through hole 141a are designed, when the assembly is performed, the locking post 121 and the sleeve 141 are mutually abutted, so that the effect of supporting and preventing collapse can be achieved, meanwhile, the top shell 10 and the bottom shell 12 can be firmly fixed into a whole by matching the connecting screw 16 to pass through the connecting hole 141a in the sleeve 141 and correspondingly screw-fit into the screw hole 121a of the locking post 121, and the stable limit of the limiting piece 14 on the first wheel axle 3 can be ensured; in addition, the first stop ring 141b can effectively limit the connecting screw 16; in addition, one end of the connecting hole 141a, through which the connecting screw 16 penetrates, is positioned at the bottom surface of the bottom shell 12, and is not directly outward in a normal use state, so that the connecting hole is not easy to see, and the aesthetic feeling of the vehicle body is improved; meanwhile, a plurality of side planes 30 are arranged on the vertical rod 3, and when the vertical rod 3 is inserted into the jack 143, the vertical rod 3 and the jack 143 can be positioned in the circumferential direction; moreover, by arranging the positioning convex strips 301, the plugging angle between the vertical rod 2 and the jack 143 is limited, and reverse installation is prevented; and the locking screw 18 is locked in the locking hole 32 of the vertical rod 3, so that the bottom end of the vertical rod 3 can be effectively fixed on the base 1.

On the other hand, as shown in fig. 11, an embodiment of the present utility model further provides a toy vehicle, which includes a vehicle body C, a front foot assembly a assembled below the front end of the vehicle body C, and a steering wheel B assembled above the front end of the vehicle body C, where the front foot assembly a is the front foot assembly described in the above embodiment. In this embodiment, the toy vehicle adopts the same front foot assembly a as described above, and can effectively protect the roller mounting structure.

The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are all within the scope of the present utility model.

Claims (10)

1. The utility model provides a toy vehicle's front foot subassembly, includes base, bottom are fixed in the base middle section and the top upwards extends and is connected to the montant of toy vehicle's steering wheel, install in first shaft on the base and pivot locate first gyro wheel of first shaft, a serial communication port, be provided with upward slotted mounting groove on the base, the relative both ends in the mounting groove are formed with upward setting opening respectively and are used for supplying first shaft corresponds the support bayonet socket of card income and be in the middle section of the tank bottom wall of mounting groove forms the perforation that runs through to the bottom surface of base, the wheel center department of first gyro wheel is provided with the shaft hole and with the help of the shaft hole cover is located the middle section of first shaft, the both ends of first shaft respectively the joint in corresponding support bayonet socket, the bottom of first gyro wheel is passed the perforation stretches out from the bottom surface of base, front foot subassembly still includes from the notch inserts the department of leaning on both ends and with support bayonet cooperation centre gripping is spacing the butt of the corresponding tip of first shaft.

2. The toy vehicle forefoot assembly of claim 1, wherein the base includes a top shell and a bottom shell fastened up and down, and the mounting slot is formed in the bottom shell.

3. The toy vehicle's front foot assembly of claim 2, wherein two ends of the mounting groove are respectively formed with a vertically arranged partition board near the perforation, two opposite ends of the mounting groove are respectively separated into a containing cavity, the supporting bayonets are formed on the partition board, two opposite ends of the first wheel axle are respectively clamped on the supporting bayonets and extend into the containing cavities, the pressing pieces are inserted into the containing cavities in a one-to-one correspondence and are pressed against the side surfaces of the first wheel axle, and the pressing surfaces for pressing against the first wheel axle and the bottom inner wall surfaces of the supporting bayonets are matched with the shapes of the side surfaces corresponding to the two ends of the first wheel axle.

4. A toy vehicle forefoot assembly as in claim 3, wherein said receiving cavity further includes a stop tab for abutting against a distal end of said first axle to prevent axial movement of said first axle.

5. A toy vehicle forefoot assembly as in claim 3, wherein said pressure abutment includes a pressure block inserted into said receiving cavity to bear against a first axle end and a pressure abutment projecting from said top shell bottom surface toward said bottom shell and bearing against the pressure block to compress said pressure block to a limit in said receiving cavity; or, the pressing piece is integrally formed on the bottom surface of the top shell.

6. The toy vehicle's front foot assembly of claim 2, wherein the bottom surface of the bottom shell is further provided with protective protrusions at positions corresponding to two sides of the first roller in the axial direction, and the outer surfaces of the two protective protrusions and the bottom end wheel surface of the first roller are surrounded to form a convex spherical surface.

7. The toy vehicle's front foot assembly of claim 1 or 2, wherein the first axle is assembled on the first end of the base, the front foot assembly further comprises a second axle transversely penetrating through the second end of the base and extending from two sides of the base at two opposite ends, and second rollers respectively pivoted at two opposite ends of the second axle, a bearing is arranged at the axle center of each second roller, an inner ring of the bearing is sleeved on the second axle and is fixed relative to the second axle, a nut for limiting the second roller on the second axle is screwed at the tail end of the second axle, and a wheel cover covering the nut is also buckled and fixed on the outer side surface of the second roller.

8. The toy vehicle forefoot assembly of claim 7, wherein the first roller has a diameter less than a diameter of the second roller and the first axle has a mounting height not less than a mounting height of the second axle or the first axle has a mounting height less than a second axle but a difference between the mounting height of the first axle and the mounting height of the second axle is less than a difference between the radius of the second roller and the first roller.

9. The toy vehicle's front foot assembly of claim 2, wherein the top shell bottom surface is provided with a plurality of locking posts with screw holes on end surfaces, the bottom shell top surface is provided with a sleeve which corresponds to the locking posts one by one and is internally provided with a connecting hole which axially penetrates through the bottom shell, the tail end of the sleeve is also radially inwards protruded to form a first stop ring, when the top shell and the bottom shell are mutually butted, the locking posts are abutted with the sleeve, a connecting screw passes through the connecting hole in the sleeve and correspondingly is screwed in the screw holes of the locking posts, and the head part of the connecting screw is abutted with the first stop ring; the middle section of the bottom shell is provided with a jack vertically penetrating the bottom shell, a second stop ring is formed by protruding inwards along the radial direction at the position close to the bottom end of the inner wall of the jack, a through hole for exposing the jack is correspondingly formed at the top surface of the top shell, a plurality of side planes symmetrically arranged around the central axis are arranged on the side surface of the vertical rod in an extending mode along the length direction, positioning convex strips for enabling the vertical rod to penetrate through the through hole only at a preset angle and be inserted into the jack are further formed in the middle of one side plane in a protruding mode, the cross sections of the vertical rod and the jack are mutually matched, a locking hole is further formed in the end face of the bottom end of the vertical rod, the vertical rod is inserted into the jack and is abutted to the second stop ring, and a locking screw is inserted from the bottom end hole of the jack and correspondingly screwed to the locking hole of the vertical rod correspondingly penetrates through the second stop ring, and the head of the locking screw is abutted to the second stop ring to lock the vertical rod.

10. A toy vehicle comprising a body, a forefoot assembly assembled below the front end of the body, and a steering wheel assembled above the front end of the body, wherein the forefoot assembly is the forefoot assembly of any one of claims 1-9.