阅读说明：本技术 一种玩具车的车轮组件及玩具车 (Wheel assembly of toy car and toy car ) 是由 詹俊炎 蔡庞 于 2019-04-04 设计创作，主要内容包括：本发明公开了一种玩具车的车轮组件及玩具车,包括内轴、外轴和轮胎,其中,外轴套装在内轴上,内轴和外轴分别与轮胎卡接。本发明的外轴设置为中空结构,外轴的末端设置有卡接段,在车轮与玩具车架进行装配时,在安装凹槽中,卡接段向内变形,可轻松的嵌入到车架的安装凹槽中,另外内轴插入外轴的中空腔体内,占据了外轴向内变形的空间,使外轴上的卡接段无法再变形脱离车架,实现锁死,使婴幼儿无法拆卸该玩具车,提高了玩具车的安全性。而且,本发明的外轴相对于内轴、轮胎和车架都是可以活动的,可与内轴和轮胎同轴旋转,也可以在车架的安装凹槽中摩擦旋转,车轮的顺滑性更好。(The invention discloses a wheel assembly of a toy car and the toy car, which comprises an inner shaft, an outer shaft and a tire, wherein the outer shaft is sleeved on the inner shaft, and the inner shaft and the outer shaft are respectively clamped with the tire. The outer shaft is of a hollow structure, the tail end of the outer shaft is provided with the clamping section, when the wheels are assembled with the toy car frame, the clamping section is deformed inwards in the mounting groove and can be easily embedded into the mounting groove of the car frame, in addition, the inner shaft is inserted into the hollow cavity of the outer shaft, the space of the outer shaft which is deformed inwards in the axial direction is occupied, the clamping section on the outer shaft cannot be deformed and separated from the car frame, locking is realized, the toy car cannot be dismounted by infants, and the safety of the toy car is improved. In addition, the outer shaft of the invention can move relative to the inner shaft, the tire and the frame, can rotate coaxially with the inner shaft and the tire, and can also rotate in a friction way in the mounting groove of the frame, so that the smoothness of the wheel is better.)

1. The wheel assembly of the toy car is characterized by comprising an inner shaft, an outer shaft and a tire, wherein the outer shaft is provided with a hollow part, the inner shaft extends into the hollow part, and the inner shaft and the outer shaft are respectively clamped with the tire.

2. The toy vehicle wheel assembly of claim 1, wherein a rim is fixedly disposed above the inner shaft, and at least two protrusions are disposed on a lower end surface of the rim, and the rim is engaged with the tire via the protrusions.

3. The toy vehicle wheel assembly of claim 2, wherein the rim is integrally connected to the inner shaft.

4. The toy vehicle wheel assembly of claim 2, wherein the rim is fixedly connected to the inner shaft in a split configuration.

5. The toy vehicle wheel assembly of claim 2, wherein the protrusion includes an arc-shaped protrusion disposed on a lower end surface of the rim, and a stopper protruding from the arc-shaped protrusion is disposed at an end of the arc-shaped protrusion.

6. The toy vehicle wheel assembly of claim 5, wherein the tire includes a notch that engages the stop block.

7. The toy vehicle wheel assembly of claim 1, wherein the outer axle includes a contact section and a connection section connected in sequence, a stop portion is disposed at one end of the contact section, the stop portion is connected with the inner ring of the tire in a clamping manner, and the connection section is used for arranging the wheel assembly on the toy vehicle.

8. The toy vehicle wheel assembly of claim 7, wherein the outer axle further includes a clamping section at a lower end of the connecting section, the clamping section being in clamping connection with the toy vehicle.

9. The toy vehicle wheel assembly of any one of claims 1-8, wherein the material of the wheel assembly is a rigid plastic.

10. A toy vehicle comprising a wheel assembly of a toy vehicle according to any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of toys, in particular to a wheel assembly of a toy car and the toy car.

Background

Current toy car wheel, generally including cylindric car hub and the tire of cover on the car hub, the wheel realizes through the wheel hub connection with fixing on the frame that the drive dolly goes, such wheel suit is on fixing the shaft at the frame, when the wheel drives toy car and forwards pushes away, only one friction activity face (wheel and shaft relative rotation), the mobility of wheel is difficult to guarantee in the same direction as smooth, and when a plurality of wheels rotated simultaneously on the toy car, can go out current wheel and rotate, there is the condition that the wheel does not change, lead to whole toy car direction not smooth enough, thereby the wholeness ability of toy car has been reduced.

Patent CN104755143B discloses a toy wheel assembly and a method of manufacturing the same, comprising a rim, a tyre and an axle, wherein the tire is configured to surround an outer periphery of the rim when mounted on the rim, the axle is configured to be connected to the rim coaxially with the rim, connected in a manner to allow coaxial rotation of the rim on the axle, the rim comprising one or more protrusions configured to radially engage an outer circumferential groove provided on the axle when the axle is inserted into the axle receiving bore in the rim, and one or more protrusions are retained in the circumferential groove by the inner face of the tyre when the tyre is mounted on the rim, the wheel axle of the toy car is rotatable relative to the rim and the car frame, but the assembly requirement is high, and if the assembly tolerance does not meet the requirement, the wheel axle cannot rotate relative to the rim and the car frame, and the smoothness of the toy car is difficult to guarantee.

As described above, although the wheel assembly of the existing toy vehicle has a simple structure, the rotation is not smooth enough, the connection is not firm enough, and the requirement for installation accuracy is high. In particular, it is particularly desirable to provide a toy vehicle that is securely connected, easily installed, and smoothly rotated for an infant.

Disclosure of Invention

In order to solve the technical problems that the wheel assembly of the existing toy car is not firm in connection, high in installation precision requirement, not smooth enough in rotation of wheels of the toy car and the like, the invention aims to provide the wheel assembly of the toy car, which comprises an inner shaft, an outer shaft and a tyre, wherein the outer shaft is provided with a hollow part, the inner shaft extends into the hollow part and is in contact connection with the hollow part, and the inner shaft and the outer shaft are respectively in clamping connection with the tyre.

Further, interior axle includes the rim, and the rim is fixed to be set up in the top of interior axle, and the terminal surface is provided with two at least lugs under the rim, and the rim passes through the lug to be connected with the tire joint.

Preferably, the rim is integrally connected with the inner shaft.

Preferably, the rim is fixedly connected with the inner shaft in a split mode.

Furthermore, the protruding part comprises an arc protrusion arranged on the lower end face of the wheel rim, and a protruding arc-shaped protruding limiting block is arranged at the end part of the arc protrusion.

Furthermore, a notch is arranged on the tire, and the inner shaft and the tire are connected with the limiting block in a clamping mode through the notch.

Further, the outer axle is including the contact section and the linkage segment that connect gradually, is equipped with backstop portion in the one end of contact section, and backstop portion is connected with the inner circle joint of tire, and the linkage segment is used for disposing wheel assembly on the toy car. The outer shaft is of a hollow structure, the hollow part is in contact connection with the inner shaft, and the contact section is in contact connection with the inner ring of the tire, so that the outer shaft can move relative to the inner shaft and the tire, the moving surface for the rotation of the wheel is increased, and the wheel is guided smoothly.

Further, the outer axle still includes the joint section, and the joint section is located the lower extreme of linkage segment, and the joint section is connected with the toy car joint. The clamping section protrudes out of the end part of the connecting section, and the outer shaft is of a hollow structure, so that the clamping section can be deformed inwards to penetrate through the mounting groove of the toy car and then clamped at the tail end of the mounting groove, and the clamping connection of the wheels and the toy car is realized.

Further, the material of the wheel assembly is hard plastic.

It is a second object of the present invention to provide a toy vehicle including a wheel assembly of any of the above toy vehicles. The toy car can be guided more smoothly by applying the at least four wheel assemblies, and when the toy car runs on a smooth or bumpy road surface, the at least four wheels can rotate simultaneously by the wheel assemblies with special structures. Thus, playability of the toy vehicle can be improved.

The wheel assembly of the toy car and the toy car have the following beneficial effects:

1. according to the wheel assembly of the toy car, the clamping section is arranged at the tail end of the outer shaft, when the wheel is assembled with the toy car, the clamping part is deformed inwards in the mounting groove of the toy car, and the wheel assembly can be easily embedded into the mounting groove of the car frame and then clamped at the tail end of the mounting groove.

2. According to the wheel assembly of the toy car, the outer shaft is provided with the hollow part, the inner shaft extends into the hollow cavity of the outer shaft to occupy the space of the outer shaft deformed inwards in the axial direction, so that the clamping section on the outer shaft cannot be deformed to separate from the car frame, and locking is achieved.

3. According to the wheel assembly of the toy car, the arc-shaped limiting block on the wheel rim is clamped with the notch on the tire, so that the tire and the wheel rim can be locked, and the wheel assembly is convenient to assemble and cannot be disassembled.

4. The wheel assembly and the toy car frame can not be disassembled after being assembled, so that the connection between the wheel assembly and the toy car is firmer and more reliable; on the other hand, the toy car volume after the installation is more than the part volume of detachable toy car among the prior art, avoids the infant to swallow the condition emergence of toy car part, has improved the security of toy car.

5. According to the wheel assembly of the toy car, the outer shaft can move relative to the inner shaft, the tire and the car frame, can rotate coaxially with the inner shaft, and can also rotate in a friction mode in the mounting groove of the car frame, and the smooth performance of the wheel is better.

6. According to the toy car, the plurality of wheel assemblies are used, so that the toy car is more stable and smoother in the traveling process, and the condition that some wheels do not rotate in the traveling process of the toy car is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a front cross-sectional view of a toy vehicle wheel assembly of the present invention.

Fig. 2 is a cross-sectional view of an outer shaft of a toy vehicle wheel assembly of the present invention.

Figure 3 is a cross-sectional view of an inner shaft of a toy vehicle wheel assembly in accordance with the present invention.

Fig. 4 is a schematic cross-sectional view of a tire of a toy vehicle wheel assembly of the present invention.

Fig. 5 is a schematic assembly view of the wheel assembly and frame of the toy vehicle of the present invention.

The tire comprises an inner shaft 1, an outer shaft 2, a tire 3, a frame 4, a support part 11, a limiting part 12, a rim 13, an arc limiting block 14, an arc protrusion 15, a first hollow part 22, a second hollow part 23, a stopping part 24, a contact section 25, a connecting section 26, a clamping section 27, a U-shaped notch 31, an outer ring 32, an inner ring 33, a mounting groove 34, a notch 35, an intermediate part 36, an outer cavity 37, an inner cavity 41.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a wheel assembly of a toy car, which comprises an inner shaft 1, an outer shaft 2 and a tire 3, wherein the outer shaft 2 is sleeved on the inner shaft 1, and the inner shaft 1 and the outer shaft 2 are respectively clamped with the tire 3, as shown in figures 1-5. The invention does not limit the shapes of the inner shaft and the outer shaft, and the tire can be clamped in the inner shaft and the outer shaft.

Specifically, as shown in fig. 3, a flange 13 is fixedly disposed above the inner shaft 1 in the present embodiment, and the flange 13 is a flat cylindrical shape and rotates coaxially with the inner shaft 1. Wherein, the lower terminal surface of rim 13 sets up two protruding portions at least, and the central angle that two adjacent protruding portions are right equals, and every protruding portion is connected with breach 34 joint that sets up on the tire respectively. In some embodiments, the projections may be two, three, four, or more. Preferably, two protruding portions are symmetrically arranged on the lower end face of the rim 13 of the present embodiment, each protruding portion includes an arc-shaped protrusion 15 arranged on the lower end face of the rim and extending along the circumferential direction of the rim, and an arc-shaped stopper 14 protruding from the outer circumferential wall of the arc-shaped protrusion and extending along the circumferential direction of the arc-shaped protrusion, wherein the arc-shaped protrusion 15 and the arc-shaped stopper 14 are both partially surrounded, the central angles of the protrusions are equal, and the outer diameter of the arc-shaped protrusion 15 is the same as the outer diameter of the rim 13. In some embodiments, the arc stopper 14 is chamfered away from the lower end of the arc protrusion 15, and the chamfer of the lower end of the arc stopper 14 starts at a position flush with the outer periphery of the rim 13. During installation, the protruding part is contracted and deformed and is forcibly pressed into the notch 34 of the tire until the arc-shaped limiting block 14 passes through the notch 34 and is clamped at the lower end of the notch 34. The arc-shaped limiting block 14 is provided with a chamfer, so that a guiding effect is realized on the pressure on the wheel rim 13 during installation, and the arc-shaped limiting block 14 can more easily penetrate through the notch 34 to realize clamping connection. After the mounting is completed, the rim 13 and the arc-shaped limiting block 14 limit the tire 3 from the upper direction and the lower direction, and the mutual locking of the tire 3 and the rim 12 is realized. The protruding portion of the preferred embodiment of the present invention is an arc-shaped protrusion and an arc-shaped stopper, but the shapes of the protruding portion of other embodiments can be designed in various ways according to actual situations, and the present invention is not limited specifically, and all of them belong to the protection scope of the present invention.

In a preferred embodiment, the rim is integrally connected with the inner shaft. In another embodiment, the rim and the inner shaft are fixedly connected in a split mode.

Specifically, as shown in fig. 4, the shape of the notch 34 on the tire is matched with the shape of the arc-shaped protrusion 15, as a more preferable embodiment, the notch 34 is configured to be arc-shaped, the outer diameter of the notch 34 is the same as the outer diameter of the outer edge 13, the inner diameter of the notch is slightly larger than the outer diameter of the arc-shaped protrusion 15, the two ends of the arc-shaped notch are provided with the relief grooves in the direction close to the axis of the tire, so as to facilitate the processing of the notch, one or two relief grooves are provided at the notch 34 of the present invention, and the specific shape of the.

Specifically, the tire in this embodiment includes an inner ring 32 and an outer ring 31, the inner ring 32 and the outer ring 31 are integrally connected together by an intermediate portion 35, the intermediate portion 35 is in a circular ring shape, the inner ring 31 is located on a lower end surface of the intermediate portion, the intermediate portion 35 and the inner ring 32 divide a space inside the outer ring 31 into an inner cavity 37 and an outer cavity 36, and the outer cavity 36 is located below the intermediate portion 35 and outside the inner ring 32. In this embodiment, the notches 34 on the tire are symmetrically arranged on the middle portion 35, and the arc-shaped limiting block 14 is located in the outer cavity 36, is clamped on the lower end surface of the middle portion 35, and is adjacent to the notches 34. In some preferred embodiments, reinforcing ribs are uniformly arranged in the outer cavity 36, and the reinforcing ribs are respectively connected with the middle part 35, the inner ring 32 and the outer ring 31, and the arrangement of the reinforcing ribs ensures that the toy wheel assembly is connected more firmly and has higher safety.

Specifically, as shown in fig. 2, the outer shaft 2 of the present embodiment has a hollow structure, and has a hollow portion, and the inner shaft extends into the hollow portion to be in contact with the hollow portion. Preferably, the hollow portion of the outer shaft includes a first hollow portion 21 and a second hollow portion 22, the first hollow portion 21 and the second hollow portion 22 are each cylindrical, and an inner diameter size of the first hollow portion 21 is larger than an inner diameter size of the second hollow portion 22.

Because the outer shaft is arranged into a hollow structure, not only is the innovation brought to the modeling of the wheel, but also the hollow outer shaft can rotate relative to the tire and the inner shaft, the movable contact surface for the walking of the wheel is increased, and the toy car can run more smoothly.

Specifically, as shown in fig. 3, the inner shaft includes a limiting portion 12 and a supporting portion 11, an outer diameter of the limiting portion 12 is larger than an outer diameter of the supporting portion 11, the outer diameter of the limiting portion 12 matches with an inner diameter of the first hollow portion 21, the outer diameter of the supporting portion 11 matches with an inner diameter of the second hollow portion 22, the first hollow portion 21 and the second hollow portion 22 transition through a chamfer or a fillet, and the limiting portion 12 and the supporting portion 11 also transition through a chamfer and a fillet. The chamfer or fillet transition is beneficial to reducing stress concentration caused by relative movement between the outer wall of the inner shaft and the inner wall of the outer shaft. The inner shaft 1 and the outer shaft 2 of the invention can be fixedly connected or in contact connection. Preferably, the inner shaft 1 is in contact connection with the outer shaft 2, and the outer shaft 2 is rotatable relative to the inner shaft 1.

Specifically, as shown in fig. 1, the outer shaft 2 is inserted into the tire 3, the outer shaft 2 has a stopping portion 23, the stopping portion 23 protrudes out of the outer circumferential wall of the outer shaft contact section 24 and extends along the circumferential direction of the outer shaft, and the stopping portion 23 abuts against the inner ring-up mounting groove 33 on the tire inner ring 32, so that the outer shaft 2 and the tire 3 can be prevented from loosening, and the assembling firmness of the outer shaft 2 and the tire 3 is enhanced. Further, an installation groove 33 surrounds the upper end of the tire inner ring 32, the depth of the installation groove 33 is slightly larger than the thickness of the stopping portion 23, and the inner diameter of the installation groove 33 is slightly larger than the outer diameter of the stopping portion 23. The outer shaft contact section 24 of the invention is positioned at the lower end of the stopping portion 23, the outer shaft contact section 24 is in contact fit with the tire inner ring 32, and the outer shaft 2 can also rotate relative to the tire 3.

Specifically, the outer shaft of the present embodiment has a connecting section 25, the connecting section 25 is located at the lower end of the outer shaft contact section 24, the connecting section 25 is recessed in the outer peripheral wall of the outer shaft contact section 24 and extends along the circumferential direction of the outer shaft contact section 24, and the connecting section 25 is used for disposing the wheel assembly on the toy car. As shown in fig. 5, the connecting section 25 is installed in a matching manner with the installation groove 41 of the toy car frame 4, the car frame 4 is clamped on the connecting section 25, the wheel assembly cannot move towards the direction of the car frame 4 due to the interaction between the car frame 4 and the outer shaft contact section 24, and the wheel assembly cannot be separated from the car frame due to the interaction between the car frame 4 and the clamping section 26, so that the wheel assembly is loosened.

Specifically, the clamping section 26 of the present embodiment is located at the end of the connecting section 25, protrudes from the outer peripheral wall of the connecting section 25 and extends along the circumferential direction of the connecting section 25, and the clamping section 26 is used for fixing the wheel assembly on the toy vehicle. The symmetry is provided with two U type breachs 27 on the joint section 26 of this embodiment, and U type breach 27 falls into centrosymmetric two parts with joint section 26 to U type breach 27 extends to linkage segment 25, and joint section 26 is inwards out of shape when U type breach 27's setting is convenient for install the wheel subassembly, makes things convenient for joint section 26 to pass the end of joint at mounting groove 41 behind mounting groove 41. In some embodiments, the ends of the snap segments 26 are chamfered to reduce resistance to installation of the snap segments 26 and to allow for quick installation. In the installation, at first outer axle inserts in the tire, realize the contact installation of outer axle and tire, then in outer epaxial joint section 26 of epaxial and linkage segment 25 insert mounting groove 41, realize joint section 26, the linkage segment 25 is connected with the frame, insert interior axle 1 in the hollow cavity of outer axle 2 at last, it needs to explain, in case interior axle 1 inserts in the hollow cavity of outer axle, interior axle has just occupied the space of outer axle 2 internal deformation, outer epaxial joint section 26 of epaxial unable deformation again breaks away from frame 4 to the lock of wheel subassembly with frame 4 has been realized. The wheel assembly and the toy car frame can not be disassembled after being assembled, so that the connection between the wheel assembly and the toy car is firmer and more reliable; on the other hand, the toy car volume after the installation is more than the part volume of detachable toy car among the prior art, avoids the infant to swallow the condition emergence of toy car part, has improved the security of toy car.

It should be noted that the connecting section 25 of the outer shaft 2 is relatively rotatable with respect to the mounting recess 41 of the frame, so as to increase the contact area between the wheels and the frame, and to make the toy vehicle smoother during traveling.

In particular, the wheel assembly of the present invention is made of rigid plastic or a material equivalent to plastic, and in some embodiments, the tire 3 may be made of rubber, and the inner and outer shafts 1, 2 may be made of metal, such as aluminum, steel, etc.

Another embodiment of the present invention relates to a toy vehicle chassis including one or more toy wheel assemblies of the present invention, the toy vehicle chassis with the toy wheel assemblies of the present invention installed therein being configured to receive other components, such as building blocks. The toy wheel assembly of the present invention may be part of a toy playset.

Another embodiment of the present invention is directed to a toy vehicle including one or more of the toy vehicle wheel assemblies described above. The toy vehicle may be a car, motorcycle, train, toy car, or truck. The toy car of this embodiment includes 4 wheel assemblies of the above-mentioned toy car, the wheel assembly of the prior art, it is difficult to achieve 4 wheels to rotate at the same time in the toy car marchs, the wheel assembly of the invention, the outer axle is movable relative to inner shaft, frame, tire, thus realize 4 or more wheels smooth and smooth rotation, the toy car runs more steadily.

The terms "upper", "lower", "first" and "second" in the present invention are used for convenience of description only and should not be construed as limiting the actual contents of the present invention.

The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.