Pet toy vehicle

Abstract

The application provides a pet toy vehicle, which comprises a power mechanism, a power shell and a power assembly provided with a connecting hole; a rolling assembly, a rolling piece, a semicircular piece and a connecting rod, wherein the rolling piece is provided with an inner groove and a guide groove; and the connecting rod is inserted into the connecting hole through the guide groove, the power assembly is inserted into the inner groove, and the rolling piece is fixedly connected with the semicircular piece. The three components are combined into a force transmission positioning chain, which limits the transmission of torque in the circumferential direction, suppresses loosening and improves stability.

Description

Technical Field

[0001] This application relates to the field of toy technology, and more particularly to a pet toy car. Background Technology

[0002] With the increase in pet-owning households, spherical toys that can roll themselves to distract pets have become widely used. Traditionally, these toys typically consist of two hemispheres housing a small motor and battery, but due to space and layout limitations, their power and battery life are generally insufficient. To improve driving capability, the industry has gradually moved the power unit between the two halves, allowing its output to act on the outer shell to drive the rolling motion. This creates new connection requirements: the power unit needs to establish a stable transmission and positioning relationship with both halves, achieving alignment, insertion, and load-bearing within a compact space.

[0003] Existing structures often use only single-point insertion, edge engagement, or simple openings / cavities to achieve fit at this connection interface, lacking a dedicated interface that can simultaneously provide alignment guidance and containment limits. Assembly is prone to eccentricity, and the cumulative dimensional tolerances create initial gaps. Under repeated impacts from start-stop cycles, ground collisions, and reverse torque, insufficient axial and circumferential constraints cause relative displacement at the connection point, which gradually amplifies, eventually leading to loosening, eccentricity, or even separation, resulting in wear and damage to internal components. In other words, while an external power component between the two halves can enhance output, if the transmission and positioning are not stable, the power component is prone to separating from the two halves during transmission, causing damage. This is precisely the technical challenge commonly faced by existing spherical pet toys. Utility Model Content

[0004] Therefore, it is necessary to propose a pet toy car to solve the above problems.

[0005] An embodiment of this application provides a pet toy car, including: a power mechanism, including a power housing and a power component, wherein the power component is disposed inside the power housing and partially extends out of the power housing, and the power component has a connection hole; A rolling assembly includes a rolling element and a semi-circular element disposed on the rolling element. The rolling element has an inner groove and a guide groove that passes through the rolling element and communicates with the inner groove on its surface facing the power assembly. The semi-circular element includes a semi-circular body and a connecting rod disposed on the semi-circular body. When the pet toy car is assembled, the connecting rod extends into and is fixed in the connecting hole through the guide groove, the power component extends into and is fixed in the inner groove, and the rolling element is fixed on the semi-circular part.

[0006] In at least one embodiment of this application, the inner wall of the semicircular part is provided with a circumferentially extending screw-in protrusion, and the outer edge of the rolling part is provided with a screw-in groove that matches the screw-in protrusion. When the semicircular part rotates circumferentially relative to the rolling part, the screw-in protrusion slides into the screw-in groove and forms a screw-in fixation.

[0007] In at least one embodiment of this application, the connecting hole is disposed at the center of the end face of the extended end of the power component, and the axis of the connecting hole is coaxial with the rotation axis of the power component.

[0008] In at least one embodiment of this application, the connecting rod is coaxially arranged with the connecting hole; the guide groove is located in a radial plane passing through the axis.

[0009] In at least one embodiment of this application, a coaxial positioning frustum is provided at the center of the rolling element, and a matching mounting groove is provided at the center of the semicircular element. After assembly, the positioning frustum is embedded in the mounting groove and remains in circumferential contact to provide radial support and positioning for the semicircular element and the rolling element.

[0010] In at least one embodiment of this application, an annular limiting shoulder is provided at the bottom of the inner groove, and a positioning rib extending axially is provided on the side wall of the inner groove. After the power component extends into the inner groove, it abuts against the limiting shoulder and fits against the positioning rib, thereby forming axial limiting and radial limiting respectively.

[0011] In at least one embodiment of this application, the power assembly includes a motor and an output shaft connected thereto; A drive gear is provided on the output shaft of the motor, and a driven gear is provided on the output shaft. The drive gear and the driven gear mesh and transmit power. The connecting hole is opened at the end of the output shaft facing the rolling element.

[0012] In at least one embodiment of this application, the circumferential connection portion between the semicircular component and the rolling component is disposed in the outer circumferential region of the rolling component, and the positioning frustum and the mounting groove are disposed in the central region of the rolling component and the semicircular component. The circumferential connecting part is coaxial with the positioning frustum and the mounting groove, and is arranged at intervals between them in the axial direction.

[0013] In at least one embodiment of this application, the driven gear is sleeved on the mating section of the output shaft and fixedly connected to the output shaft, for transmitting the rotational power of the driven gear to the output shaft.

[0014] In at least one embodiment of this application, the power housing is provided with a first support position and a second support position. The first support position is used to support the output shaft of the motor, and the second support position is used to support the output shaft. The first support position and the second support position are used to define the center distance between the drive gear and the driven gear.

[0015] After assembly, the aforementioned pet toy car establishes three mating relationships to achieve stable transmission and positioning: the first mating relationship is the accommodating and fixing of the power component—the inner groove, providing axial stop and radial limit; the second mating relationship is the coaxial insertion of the connecting rod through the guide groove and fixed to the connecting hole, establishing circumferential torque transmission and completing axis alignment; the third mating relationship is the fixed connection of the rolling element—the semi-circular part, implementing circumferential positioning. These three elements together form a continuous force transmission and positioning chain from the automatic force component—connecting hole—connecting rod—semi-circular part—rolling element, creating complementary constraints in the axial, radial, and circumferential directions. This maintains connection stability under start-stop impacts, collisions, and reverse torque, suppressing displacement, loosening, and separation, reducing wear and noise, and improving concentricity and assembly consistency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] in: Figure 1 A perspective view of a pet toy car in one embodiment; Figure 2 An exploded view of a pet toy car in one embodiment; Figure 3 This is a structural diagram of the power mechanism of a pet toy car in one embodiment; Figure 4 This is a cross-sectional view of the pet toy car in a coordinated state in one embodiment; Figure 5 This is a cross-sectional view of the pet toy car before it is assembled in one embodiment.

[0018] Explanation of main component symbols 100. Pet toy car; 10. Power mechanism; 11. Power housing; 12. Power assembly; 13. Connecting hole; 20. Rolling assembly; 21. Rolling element; 22. Semicircular part; 23. Inner groove; 24. Guide groove; 25. Connecting rod; 30. Screw-on protrusion; 31. Screw-on groove; 40. Positioning frustum; 41. Mounting groove; 42. Annular limiting shoulder; 43. Positioning rib; 50. Motor; 51. Output shaft; 52. Output end shaft; 53. Drive gear; 54. Driven gear; 60. First support position; 61. Second support position; 70. Power housing cover. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] Please see Figures 1-5 A pet toy car 100 according to an embodiment of this application includes a power mechanism 10 and a rolling assembly 20. The power mechanism 10 consists of a power housing 11 and a power assembly 12 disposed within the power housing 11. The end portion of the power assembly 12 extends out of the power housing 11 and has a connecting hole 13 at the extended end. The rolling assembly 20 includes a rolling element 21 and a semi-circular element 22 disposed on the rolling element 21. The rolling element 21 has an inner groove 23 formed on its side facing the power mechanism 10, and a guide groove 24 is formed on the rolling element 21. The guide groove 24 passes through the rolling element 21 and communicates with the inner groove 23. The semi-circular element 22 includes a semi-circular body and a connecting rod 25 disposed on the semi-circular body. The connecting rod 25 is located in the central area of ​​the semi-circular element 22 and is arranged towards the rolling element 21.

[0021] It should be noted that the power assembly 12 extends into and is fixed in the inner groove 23, forming a first mating relationship between the power assembly 12 and the inner groove 23; the connecting rod 25 is inserted into and fixed in the connecting hole 13 via the guide groove 24, forming a second mating relationship between the connecting rod 25 and the connecting hole 13, wherein the guide groove 24 forms an insertion channel to limit the insertion path and alignment direction of the connecting rod 25; the rolling element 21 and the semi-circular element 22 are fixedly connected, forming a third mating relationship between the rolling element 21 and the semi-circular element 22. The first and second mating relationships are established sequentially, and the third mating relationship exists together with the two mentioned above in the assembled state. The three cooperate with each other to form a force transmission and positioning relationship chain from the power assembly 12 to the rolling assembly 20, and the guide groove 24 provides guidance and connection during the assembly period.

[0022] Furthermore, when the power component 12 is driven, its output is transmitted to the semi-circular part 22 via the fixed connection between the connecting hole 13 and the connecting rod 25. The semi-circular part 22 then acts on the rolling component 20 via the fixed connection between the rolling part 21 and the rolling component 21, causing the rolling component 20 to move relative to the power mechanism 10. In the transmission process, the above structure accommodates and fixes the power component 12 through the inner groove 23, forms a reliable connection through the connecting rod 25 and the connecting hole 13, and guides and aligns the channel during assembly using the guide groove 24. This structurally suppresses relative displacement and separation between the power component 12 and the rolling component 20, providing a stable interface and connection relationship to address the pain point of existing two-part components and power components being prone to loosening and separation during operation, which can lead to damage.

[0023] In one specific embodiment, the inner wall of the semicircular part 22 is provided with a circumferentially extending screw-in protrusion 30, which is located inside the opening edge of the semicircular part 22 and is arranged coaxially with the semicircular part 22; the outer edge of the rolling part 21 is provided with a screw-in groove 31 that matches the screw-in protrusion 30, which is circumferentially disposed inside the outer edge of the rolling part 21 and is disposed opposite to the opening of the semicircular part 22.

[0024] Furthermore, after the mating relationship between the power component 12—inner groove 23 and the connecting rod 25—connecting hole 13 is established and the central area is aligned, the semi-circular part 22 is rotated circumferentially relative to the rolling part 21, and the screw-on protrusion 30 slides circumferentially into the screw-on groove 31 and reaches the screw-on fixed state.

[0025] In one specific embodiment, the connecting hole 13 is located at the center of the end face of the extended end of the power assembly 12, where the center of the end face refers to the geometric center of the extended end face. The opening of the connecting hole 13 faces the rolling assembly 20 and is opened along the extension direction of the power assembly 12. The axis of the connecting hole 13 is coaxial with the rotation axis of the power assembly 12, and the two remain collinear during assembly and operation to provide an axial insertion position at the center of the end face. The connecting rod 25 is coaxially arranged with the connecting hole 13. During assembly, the connecting rod 25 is aligned with the connecting hole 13 along its own axis and inserted. The guide groove 24 is located in a radial plane passing through the common axis of the connecting rod 25 and the connecting hole 13. The guide groove 24 radially cuts into the outer edge of the rolling element 21 and extends through to the inner groove 23. The length direction of the guide groove 24 faces the aforementioned coaxial axis, and the groove opening faces the center of the end face where the connecting hole 13 is located.

[0026] Furthermore, the protruding end of the power assembly 12 enters the inner groove 23 of the rolling element 21 and is fixed. Then, the semi-circular part 22 is pushed in the radial direction through the common axis of the connecting rod 25 and the connecting hole 13, so that the connecting rod 25 enters the rolling element 21 in a straight line along the guide groove 24 and is aligned with the connecting hole 13 at the center of the end face. After axial insertion, it is fixed in the connecting hole 13. In the assembled state, the coaxial relationship between the connecting rod 25 and the connecting hole 13 is maintained, and the guide groove 24 continues to exist as a through channel and a limiting structure for the alignment direction.

[0027] In one specific embodiment, the rolling element 21 has a coaxial positioning frustum 40 on its center and the side facing the semicircular element 22. The positioning frustum 40 is annularly raised around the center position of the connecting rod 25 and is arranged coaxially with the rolling element 21. The semicircular element 22 has a mounting groove 41 that matches the positioning frustum 40 on its center and the side facing the rolling element 21. The mounting groove 41 is a coaxial annular recess around the connecting rod 25, and its opening faces the rolling element 21 and is concentrically corresponding to the positioning frustum 40 in the circumferential direction.

[0028] Furthermore, with the two mating points of the power component 12—inner groove 23 and connecting rod 25—connecting hole 13 already established, the semi-circular part 22 moves axially towards the rolling part 21, and the positioning platform 40 enters the mounting groove 41 axially. After entering the position, the positioning platform 40 and the mounting groove 41 remain in circumferential contact. In the assembled state, the positioning platform 40 and the mounting groove 41 form a mating interface located in the central area of ​​the rolling part 21 and the semi-circular part 22, providing radial support and positioning for the semi-circular part 22 and the rolling part 21, and together with the aforementioned two mating points, establishing the relative positional relationship in the assembled state.

[0029] In one specific embodiment, the inner groove 23 of the rolling element 21 is integrally provided with an annular limiting shoulder 42 at its bottom, and the annular limiting shoulder 42 forms an annular step around the center position of the inner groove 23; the side wall of the inner groove 23 is provided with a positioning rib 43 axially from the opening to the bottom, the positioning rib 43 is arranged concentrically with the inner groove 23, and its length direction is consistent with the axial direction of the inner groove 23.

[0030] Furthermore, the power assembly 12 extends axially into the inner groove 23 from its opening end. When the end face of the power assembly 12 abuts against the annular limiting shoulder 42, it forms an axial limit, preventing the power assembly 12 from moving further inward. Simultaneously, the power assembly 12 fits against the side wall of the inner groove 23 at the positioning rib 43, which radially limits and guides the power assembly 12, ensuring that the power assembly 12 maintains a predetermined radial position relative to the inner groove 23 in the assembled state. Thus, the annular limiting shoulder 42 provides an axial stop, and the positioning rib 43 provides radial constraint, both of which together determine the installation posture and positional relationship of the power assembly 12 within the inner groove 23.

[0031] In one specific embodiment, the power assembly 12 includes a motor 50 and an output shaft 52 that is driveably connected to the motor 50. A drive gear 53 is mounted on the output shaft 51 of the motor 50, and a driven gear 54 is mounted on the output shaft 52. The drive gear 53 and the driven gear 54 are arranged opposite to each other and mesh within the power housing 11, so that the rotation of the motor 50 acts on the output shaft 52 through gear meshing. A connecting hole 13 is formed at the end of the output shaft 52 facing the rolling element 21, with its opening facing the rolling assembly 20, for axial insertion with the connecting rod 25 during assembly.

[0032] Furthermore, the motor 50 is powered on and driven, which drives the output shaft 51 to rotate. The drive gear 53 on the output shaft 51 meshes with the driven gear 54 on the output shaft 52, causing the output shaft 52 to rotate accordingly. The fixed connection between the connecting hole 13 at the end of the output shaft 52 and the connecting rod 25 transmits this rotation to the semicircular part 22, and through the fixed connection between the semicircular part 22 and the rolling part 21, it acts on the rolling assembly 20, thereby realizing the transmission path and relative position relationship consistent with the aforementioned assembly state.

[0033] In one specific embodiment, the circumferential connection portion between the semicircular part 22 and the rolling part 21 is located in the circumferential region of the outer edge of the rolling part 21. In this embodiment, the circumferential connection portion is the circumferential connection region formed by the screw-on protrusion 30 on the inner wall of the semicircular part 22 and the screw-on groove 31 on the outer edge of the rolling part 21. The positioning frustum 40 and the mounting groove 41 are located in the central region of the rolling part 21 and the semicircular part 22, and are coaxially arranged with the center position of the connecting rod 25.

[0034] Furthermore, firstly, the positioning frustum 40 is axially inserted into the mounting groove 41 and coaxially engaged in the central region. Based on this coaxial reference, the semi-circular part 22 is then rotated circumferentially relative to the rolling part 21, causing the screw-fit protrusion 30-screw-fit groove 31 located in the outer circumferential region to complete the screw-fit connection. In the assembled state, the positioning frustum 40-mounting groove 41 in the central region and the circumferential connection part (screw-fit protrusion 30-screw-fit groove 31) in the outer circumferential region are coaxial and spaced apart in the axial direction. The positioning engagement in the central region and the outer circumferential connection are separated along the assembly axis, corresponding spatially and maintaining a predetermined relative positional relationship.

[0035] In one specific embodiment, the driven gear 54 is sleeved on the mating section of the output shaft 52 and fixedly connected to the output shaft 52. The hole axis of the driven gear 54 is arranged coaxially with the axis of the output shaft 52. During assembly, the driven gear 54 is first pushed axially to the mating section of the output shaft 52 and fixedly connected. The meshing transmission between the drive gear 53 and the driven gear 54 enables the driven gear 54 to obtain rotational force. This rotational force is transmitted to the output shaft 52 through the fixed connection between the driven gear 54 and the output shaft 52, and continues to act on the semi-circular part 22 and the rolling part 21 through the fixed connection between the connecting hole 13 at the end of the output shaft 52 and the connecting rod 25.

[0036] Furthermore, the power housing 11 is provided with a first support position 60 and a second support position 61. The first support position 60 is used to support the output shaft 51, and the second support position 61 is used to support the output end shaft 52. The first support position 60 and the second support position 61 are arranged opposite to each other in the power housing 11 and are coaxially arranged with their respective axes, so that the output shaft 51 and the output end shaft 52 maintain a predetermined spatial position relationship in the assembled state, thereby limiting the center distance between the drive gear 53 and the driven gear 54 and maintaining a stable meshing relationship. During assembly, the output shaft 51 is placed in the first support position 60 and the output end shaft 52 is placed in the second support position 61. After the two shafts are in the supported state, the drive gear 53 and the driven gear 54 are installed and meshed. Then, the power housing cover 70 is fitted and fixed to the power housing 11 on the open side to form a closed cavity for the power component 12 and gear transmission, and to cover the outer openings of the first support position 60 and the second support position 61 to prevent foreign objects from entering and to maintain the stability of the shaft system and the meshing relationship.

[0037] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A pet toy car, characterized in that, include: A power mechanism includes a power housing and a power component, wherein the power component is disposed inside the power housing and partially extends out of the power housing, and the power component has a connection hole; A rolling assembly includes a rolling element and a semi-circular element disposed on the rolling element. The rolling element has an inner groove and a guide groove that passes through the rolling element and communicates with the inner groove on its surface facing the power assembly. The semi-circular element includes a semi-circular body and a connecting rod disposed on the semi-circular body. When the pet toy car is assembled, the connecting rod extends into and is fixed in the connecting hole through the guide groove, the power component extends into and is fixed in the inner groove, and the rolling element is fixed on the semi-circular part.

2. The pet toy car according to claim 1, characterized in that, The inner wall of the semicircular part is provided with a circumferentially extending screw-in protrusion, and the outer edge of the rolling part is provided with a screw-in groove that matches the screw-in protrusion. When the semicircular part rotates relative to the rolling part in the circumferential direction, the screw-in protrusion slides into the screw-in groove and forms a screw-in fixation.

3. The pet toy car according to claim 1, characterized in that, The connecting hole is located at the center of the end face of the extended end of the power component, and the axis of the connecting hole is coaxial with the rotation axis of the power component.

4. The pet toy car according to claim 1, characterized in that, The connecting rod is coaxially arranged with the connecting hole; The guide groove is located in a radial plane passing through the common axis of the connecting rod and the connecting hole.

5. The pet toy car according to claim 1, characterized in that, The center of the rolling element is provided with a coaxial positioning frustum, and the center of the semicircular element is provided with a matching mounting groove. After assembly, the positioning frustum is embedded in the mounting groove and remains in circumferential contact to provide radial support and positioning for the semicircular element and the rolling element.

6. The pet toy car according to claim 1, characterized in that, The bottom of the inner groove is provided with an annular limiting shoulder, and the side wall of the inner groove is provided with a positioning rib extending along the axial direction. After the power component extends into the inner groove, it abuts against the limiting shoulder and fits against the positioning rib, forming axial and radial limiting respectively.

7. The pet toy car according to claim 1, characterized in that, The power assembly includes a motor and an output shaft connected thereto; A drive gear is provided on the output shaft of the motor, and a driven gear is provided on the output shaft. The drive gear and the driven gear mesh and transmit power. The connecting hole is opened at the end of the output shaft facing the rolling element.

8. The pet toy car according to claim 5, characterized in that, The circumferential connection between the semicircular component and the rolling component is located in the outer circumferential region of the rolling component, and the positioning frustum and the mounting groove are located in the central region of the rolling component and the semicircular component. The circumferential connecting part is coaxial with the positioning frustum and the mounting groove, and is arranged at intervals between them in the axial direction.

9. The pet toy car according to claim 7, characterized in that, The driven gear is fitted onto the mating section of the output shaft and fixedly connected to the output shaft, and is used to transmit the rotational power of the driven gear to the output shaft.

10. The pet toy car according to claim 7, characterized in that, The power housing is provided with a first support position and a second support position. The first support position is used to support the output shaft of the motor, and the second support position is used to support the output shaft. The first support position and the second support position are used to define the center distance between the drive gear and the driven gear.

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