Stroller wheel orientation structure

Abstract

The utility model relates to a children's pushchair wheel directional structure belongs to children's pushchair production technical field. Including front support and pushchair wheel component, the upper and lower ends of front support are connected with front leg joint and front wheel seat respectively, the cavity of front leg joint is rotatably provided with cam, the linkage that is matched with cam is set up in the front support, the directional bolt that can move between directional locking position and directional unlocking position is slidably arranged in the plug of wheel seat, the directional lock hole that is matched with directional bolt is set up on pushchair wheel component, the transmission of linkage is between cam and directional bolt, through the rotation operation to cam, makes directional bolt between directional locking position and directional unlocking position displacement. The utility model has the following beneficial effects: the structure of linkage is reasonable, and the reliability is higher, and the service life is longer, makes product whole design structure reasonable, and the conception is ingenious, has good practicality, has essential characteristics and progress compared with prior art.

Description

Technical Field

[0001] This utility model relates to a directional structure for a child stroller wheel, belonging to the field of child stroller manufacturing technology. Background Technology

[0002] There are various types of strollers on the market. To ensure the safety of strollers, the front wheels of strollers are generally swivel wheels. The swivel wheels are usually equipped with a braking mechanism to stop the swivel wheels from moving and a steering mechanism to orient the swivel wheels to prevent accidents when children are riding in the stroller.

[0003] For example, utility model patent application number 201922325990.7 discloses a novel joint structure stroller, including a seat assembly. The seat assembly has symmetrical grooves connected to both sides, and joint seat connecting blocks are movably connected to the grooves. The upper end of the joint seat connecting block is connected to an armrest. A boss mating groove is provided on one side of the joint seat connecting block. A joint front leg connecting block is installed on the side of the joint seat connecting block near the boss mating groove. A front leg assembly and a rear leg assembly are installed at the lower end of the joint front leg connecting block.

[0004] Current technology is not comprehensive and has the following drawbacks: Although the existing structure can switch between omnidirectional and directional wheels, the structure is complex, making it inconvenient to switch the direction and orientation of the omnidirectional wheels, thus limiting its applicability and reducing the effectiveness of using omnidirectional wheels.

[0005] To solve one of the above problems, there is an urgent need for a directional structure for children's stroller wheels. Utility Model Content

[0006] Based on the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to make the directional pin change position between the directional locking position and the directional unlocking position by rotating the cam in the forward and reverse directions, so as to lock and unlock the child wheel, and make the locking and unlocking operation convenient, and the state of the universal wheel can be flexibly switched, making it convenient for children to use. To this end, a directional structure for a child stroller wheel is provided.

[0007] The directional structure of the child stroller wheel of this utility model includes a front bracket and a child wheel assembly. The upper and lower ends of the front bracket are respectively connected to a front foot joint and a front wheel seat. A wheel seat inner plug is installed in the front wheel seat. The insert shaft at the top of the child wheel assembly is rotatably connected to the wheel seat inner plug. The characteristic feature is that: a cam is rotatably arranged in the cavity of the front foot joint; a linkage component that cooperates with the cam is arranged in the front bracket; a directional pin that can move between a directional locking position and a directional unlocking position is slidably arranged in the wheel seat inner plug; a directional locking hole that cooperates with the directional pin is provided on the child wheel assembly; the cam and the directional pin are driven by the linkage component; by rotating the cam, the directional pin is displaced between the directional locking position and the directional unlocking position.

[0008] By rotating the cam in both directions, the linkage causes the directional pin to shift between a locked and unlocked position. When the directional pin is in the locked position, its bottom end is inserted into the directional locking hole to restrict the rotation of the child wheel assembly relative to the inner plug of the wheel seat, thus locking the directional state. When the directional pin is in the unlocked position, its bottom end is pulled out of the directional locking hole, releasing the restriction of the directional pin on the child wheel assembly. The child wheel assembly can then rotate relative to the inner plug of the wheel seat, thereby releasing the directional state.

[0009] When braking the child wheel, the child wheel can be locked and oriented simultaneously. The locking and unlocking operations are convenient, making the child wheel easy to use.

[0010] In any of the above embodiments, preferably, the cam includes a constant-diameter section, a variable-diameter section with a gradually increasing diameter, and a transitional connecting inclined surface on its outer periphery. The two ends of the transitional connecting inclined surface are respectively connected to the tail ends of the constant-diameter section and the variable-diameter section, and the other end of the constant-diameter section is connected to the front section of the variable-diameter section. The cam drives the directional slider to slide relative to the front support, thereby changing the state of the directional pin.

[0011] In any of the above embodiments, preferably, the linkage includes a directional slider slidably disposed in the upper part of the front bracket, the upper end of the directional slider being integrally provided with an extension rod, the end of the extension rod extending into the cavity of the front foot joint, and the end of the extension rod having an abutment surface that cooperates with the cam, the abutment surface abutting against the outer wall of any one of the equal diameter section, the variable diameter section, and the transition connection inclined surface, the front bracket being provided with a slider return spring that drives the directional slider to move closer to the cam, the wheel seat inner plug being provided with a directional return spring that drives the directional pin downward, and the directional pin and the directional slider being connected by a soft steel wire.

[0012] During the counterclockwise rotation of the cam, the contact surface slides relative to the surface of the cam. The contact surface first abuts against the equal diameter section, then against the transition connecting inclined surface, and finally against the variable diameter section. During this process, the directional slider slides relative to the front bracket, which can drive the directional slider to compress the slider return spring, causing the other end of the directional slider to move away from the cam. The directional pin moves downward under the drive of the directional return spring, and the bottom end of the directional pin is inserted into the directional locking hole to restrict the rotation of the child wheel assembly relative to the inner plug of the wheel seat and lock the directional state.

[0013] During the clockwise rotation of the cam, the contact surface slides relative to the cam surface. The contact surface first abuts against the variable diameter section, then against the transition connection inclined surface, and finally against the equal diameter section. During this process, the driving directional slider gradually resets under the action of the slider return spring. The directional slider slides relative to the front bracket, causing the other end of the directional slider to move towards the cam. The soft steel wire pulls the directional pin to overcome the elastic force of the directional return spring and move upward. The bottom end of the directional pin is pulled out from the directional lock hole, releasing the restriction of the directional pin on the child wheel assembly. The child wheel assembly can rotate relative to the inner plug of the wheel seat, thereby realizing the release of orientation.

[0014] Under the action of the directional return spring and the slider return spring, the soft steel wire is always in a state of tension.

[0015] Before rotating the cam, the stroller needs to be pushed back slightly to align the directional locking hole with the directional pin. The linkage mechanism has a reasonable structure, higher reliability, and longer service life. This results in a rational and ingenious overall product design, offering excellent practicality and representing a substantial improvement over existing technologies.

[0016] In any of the above embodiments, it is preferred that the bottom end of the directional slider is provided with a spring mounting groove, a slider return spring is provided in the spring mounting groove, a bolt assembly is fixed on the front bracket, the middle part of the bolt assembly is located in the spring mounting groove, the slider return spring is a compression spring, its upper end abuts against the end of the spring mounting groove and its other end abuts against the bolt assembly.

[0017] In any of the above embodiments, it is preferred that the bolt assembly is a rod-shaped structure with its middle part located in the spring mounting groove and its two ends fixedly connected to the front bracket. It neither moves with the directional slider nor interferes with the sliding of the directional slider. During the downward movement of the directional slider, it can also cooperate with the bolt assembly to compress the slider return spring.

[0018] In any of the above embodiments, it is preferred that the directional reset spring is located on one side of the directional pin, the inner plug of the wheel seat has a spring mounting cavity, the outer wall of the directional pin is provided with a spring seat, the bottom end of the directional reset spring abuts against the spring seat, and the upper end of the directional reset spring abuts against the inner top of the spring mounting cavity.

[0019] In any of the above embodiments, it is preferred that the front support is a hollow rod-shaped structure.

[0020] In any of the above solutions, it is preferred that the directional pin and the spring seat are integrally formed.

[0021] In any of the above embodiments, it is preferred that the directional slider includes a rod that slides in cooperation with the inner wall of the front bracket, and the rod is provided with an extension rod, a spring mounting groove and a weight reduction hole.

[0022] In any of the above schemes, it is preferred that the outer diameter of the constant diameter section is the same as the minimum outer diameter of the variable diameter section.

[0023] In any of the above solutions, it is preferred that both the slider return spring and the directional return spring are compression springs.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The directional structure of the child stroller wheel described in this utility model involves rotating the cam in both forward and reverse directions. This causes the directional pin to shift between a locked and unlocked position. When the directional pin is in the locked position, its bottom end is inserted into the directional locking hole, restricting the rotation of the child wheel assembly relative to the inner wheel seat plug and locking the directional state. When the directional pin is in the unlocked position, its bottom end is pulled out of the directional locking hole, releasing the restriction on the child wheel assembly. The child wheel assembly can then rotate relative to the inner wheel seat plug, thus releasing the directional state. When the child wheel is braked, it can simultaneously lock the directional state. The locking and unlocking operations are convenient, making the child wheel easy to use.

[0026] The directional structure of the child stroller wheel described in this utility model requires the stroller to be pushed backward before rotating the cam, so that the directional locking hole and the directional pin are aligned. The linkage structure is reasonable, the reliability is higher, and the service life is longer. The overall design of the product is reasonable and ingenious, with good practicality. Compared with the prior art, it has substantial features and progress.

[0027] The directional structure of the children's stroller wheel described in this utility model enables the swivel wheel to have both omnidirectional and directional functions, allowing it to adapt to different walking environments and enabling flexible use of the swivel wheel in various environments.

[0028] The directional structure of the child stroller wheel described in this utility model has a bolt assembly that is rod-shaped, with its middle part located in a spring mounting groove and both ends fixedly connected to the front bracket. It neither moves with the directional slider nor interferes with the sliding of the directional slider. During the downward movement of the directional slider, it can also cooperate with the bolt assembly to compress the slider return spring. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is an exploded view of the present invention;

[0032] Figure 3 This is a structural diagram of the directional slider;

[0033] Figure 4 Here is a structural diagram of the cam;

[0034] Figure 5 This is a structural diagram of the inner plug of the wheel seat;

[0035] In the diagram: 1. Cam 1.1. Equal diameter section 1.2. Variable diameter section 1.3. Transition connection inclined surface 2. Front foot joint 3. Directional slider 3.1. Extension rod 3.2. Abutment surface 3.3. Spring mounting groove 4. Slider return spring 5. Soft steel wire 6. Bolt assembly 7. Front bracket 8. Front wheel seat 9. Directional return spring 10. Directional pin 10.1. Spring seat 11. Child wheel assembly 12. Wheel seat inner plug 13. Directional locking hole. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0037] Example 1, as Figure 1-2As shown, the directional structure of a child stroller wheel includes a front support 7 and a child wheel assembly 11. The upper and lower ends of the front support 7 are respectively connected to a front foot joint 2 and a front wheel seat 8. A wheel seat inner plug 12 is installed in the front wheel seat 8. The insert shaft at the top of the child wheel assembly 11 is rotatably connected to the wheel seat inner plug 12. A cam 1 is rotatably arranged in the cavity of the front foot joint 2. A linkage component that cooperates with the cam 1 is provided in the front support 7. A directional pin 10 that can move between a directional locking position and a directional unlocking position is slidably arranged in the wheel seat inner plug 12. A directional locking hole 13 that cooperates with the directional pin 10 is provided on the child wheel assembly 11. The cam 1 and the directional pin 10 are driven by the linkage component. By rotating the cam 1, the directional pin 10 is displaced between the directional locking position and the directional unlocking position.

[0038] By rotating the cam 1 in both forward and reverse directions, the directional pin 10 is moved between a directional locking position and a directional unlocking position via a linkage. When the directional pin 10 is in the directional locking position, its bottom end is inserted into the directional locking hole 13 to restrict the rotation of the child wheel assembly 11 relative to the inner wheel seat plug 12, thus locking the directional state. When the directional pin 10 is in the directional unlocking position, its bottom end is pulled out from the directional locking hole 13, releasing the restriction of the directional pin 10 on the child wheel assembly 11. The child wheel assembly 11 can then rotate relative to the inner wheel seat plug 12, thereby releasing the directional state.

[0039] When braking the child wheel, the child wheel can be locked and oriented simultaneously. The locking and unlocking operations are convenient, making the child wheel easy to use.

[0040] Example 2, as Figure 1 , Figure 2 and Figure 5 As shown, the directional structure of a child stroller wheel includes a front support 7 and a child wheel assembly 11. The upper and lower ends of the front support 7 are respectively connected to a front foot joint 2 and a front wheel seat 8. A wheel seat inner plug 12 is installed in the front wheel seat 8. The insert shaft at the top of the child wheel assembly 11 is rotatably connected to the wheel seat inner plug 12. A cam 1 is rotatably arranged in the cavity of the front foot joint 2. A linkage component that cooperates with the cam 1 is provided in the front support 7. A directional pin 10 that can move between a directional locking position and a directional unlocking position is slidably arranged in the wheel seat inner plug 12. A directional locking hole 13 that cooperates with the directional pin 10 is provided on the child wheel assembly 11. The cam 1 and the directional pin 10 are driven by the linkage component. By rotating the cam 1, the directional pin 10 is displaced between the directional locking position and the directional unlocking position.

[0041] Furthermore, the cam 1 includes a constant diameter section 1.1, a gradually increasing diameter variable diameter section 1.2, and a transitional connecting inclined surface 1.3 on its outer periphery. The two ends of the transitional connecting inclined surface 1.3 are respectively connected to the tail ends of the constant diameter section 1.1 and the variable diameter section 1.2, and the other end of the constant diameter section 1.1 is connected to the front section of the variable diameter section 1.2. The cam 1 drives the directional slider 3 to slide relative to the front bracket 7, thereby changing the state of the directional pin 10.

[0042] Furthermore, referring to Figure 3 and Figure 4 The linkage includes a directional slider 3 slidably disposed in the upper part of the front bracket 7. The upper end of the directional slider 3 is integrally provided with an extension rod 3.1. The end of the extension rod 3.1 extends into the cavity of the front foot joint 2, and the end of the extension rod 3.1 has an abutment surface 3.2 that cooperates with the cam 1. The abutment surface 3.2 abuts against the outer wall of any one of the equal diameter section 1.1, the variable diameter section 1.2, and the transition connection inclined surface 1.3. The front bracket 7 is provided with a slider return spring 4 that drives the directional slider 3 to move closer to the cam 1. The wheel seat inner plug 12 is provided with a directional return spring 9 that drives the directional pin 10 downward. The directional pin 10 and the directional slider 3 are connected by a soft steel wire 5.

[0043] During the counterclockwise rotation of cam 1, the abutment surface 3.2 slides relative to the surface of cam 1. The abutment surface 3.2 first abuts against the equal diameter section 1.1, then against the transition connecting inclined surface 1.3, and finally against the variable diameter section 1.2. During this process, the directional slider 3 slides relative to the front bracket 7, which can drive the directional slider 3 to compress the slider return spring 4, so that the other end of the directional slider 3 moves away from cam 1. The directional pin 10 moves downward under the drive of the directional return spring 9. The bottom end of the directional pin 10 is inserted into the directional locking hole 13 to restrict the rotation of the child wheel assembly 11 relative to the wheel seat inner plug 12 and lock the directional state.

[0044] During the clockwise rotation of cam 1, the abutment surface 3.2 slides relative to the surface of cam 1. The abutment surface 3.2 first abuts against the variable diameter section 1.2, then against the transition connecting inclined surface 1.3, and finally against the equal diameter section 1.1. During this process, the driving directional slider 3 gradually resets under the action of the slider return spring 4. The directional slider 3 slides relative to the front bracket 7, causing the other end of the directional slider 3 to move towards the cam 1. The soft steel wire 5 pulls the directional pin 10 to overcome the elastic force of the directional return spring 9 and move upward. The bottom end of the directional pin 10 is pulled out from the directional locking hole 13, releasing the restriction of the directional pin 10 on the child wheel assembly 11. The child wheel assembly 11 can rotate relative to the inner plug 12 of the wheel seat, thereby realizing the release of orientation.

[0045] Under the action of the directional return spring 9 and the slider return spring 4, the soft steel wire 5 is always in a taut state.

[0046] Before rotating cam 1, the stroller needs to be pushed backward slightly to align the directional locking hole 13 with the directional pin 10. The linkage mechanism has a reasonable structure, higher reliability, and longer service life. This results in a rational overall product design, ingenious conception, and excellent practicality, representing substantial features and progress compared to existing technologies.

[0047] Furthermore, the bottom end of the directional slider 3 is provided with a spring mounting groove 3.3, and a slider return spring 4 is provided in the spring mounting groove 3.3. A bolt assembly 6 is fixed on the front bracket 7, and the middle part of the bolt assembly 6 is located in the spring mounting groove 3.3. The slider return spring 4 is a compression spring, with its upper end abutting against the end of the spring mounting groove 3.3 and its other end abutting against the bolt assembly 6.

[0048] Furthermore, the bolt assembly 6 is a rod-shaped structure, with its middle part located within the spring mounting groove 3.3 and both ends fixedly connected to the front bracket 7. It neither moves with the directional slider 3 nor interferes with the sliding of the directional slider 3. During the downward movement of the directional slider 3, it can also cooperate with the bolt assembly 6 to compress the slider reset spring 4.

[0049] Furthermore, the directional reset spring 9 is located on one side of the directional pin 10, the inner plug 12 of the wheel seat has a spring mounting cavity, the outer wall of the directional pin 10 is provided with a spring seat 10.1, the bottom end of the directional reset spring 9 abuts against the spring seat 10.1, and the upper end of the directional reset spring 9 abuts against the inner top of the spring mounting cavity.

[0050] Furthermore, the front support 7 is a hollow rod-shaped structure.

[0051] Furthermore, the directional pin 10 and the spring seat 10.1 are integrally formed.

[0052] Furthermore, the directional slider 3 includes a rod that slides in cooperation with the inner wall of the front bracket 7, and the rod is provided with an extension rod 3.1, a spring mounting groove 3.3 and a weight reduction hole.

[0053] Furthermore, the outer diameter of the constant diameter section 1.1 is the same as the minimum outer diameter of the variable diameter section 1.2.

[0054] Furthermore, both the slider reset spring 4 and the directional reset spring 9 are compression springs.

[0055] The directional structure of the child stroller wheel described in this utility model involves rotating the cam in both forward and reverse directions. This causes the directional pin to shift between a locked and unlocked position. When the directional pin is in the locked position, its bottom end is inserted into the directional locking hole, restricting the rotation of the child wheel assembly relative to the inner wheel seat plug and locking the directional state. When the directional pin is in the unlocked position, its bottom end is pulled out of the directional locking hole, releasing the restriction on the child wheel assembly. The child wheel assembly can then rotate relative to the inner wheel seat plug, thus releasing the directional state. When the child wheel is braked, it can simultaneously lock the directional state. The locking and unlocking operations are convenient, making the child wheel easy to use.

[0056] The directional structure of the child stroller wheel described in this utility model requires the stroller to be pushed backward slightly before rotating the cam, so that the directional locking hole and the directional pin are aligned. The linkage structure is reasonable, with higher reliability and longer service life, making the overall product design reasonable, ingenious, and highly practical. Compared with the prior art, it has substantial features and progress.

[0057] The directional structure of the child stroller wheel described in this utility model has a bolt assembly that is rod-shaped, with its middle part located in a spring mounting groove and both ends fixedly connected to the front bracket. It neither moves with the directional slider nor interferes with the sliding of the directional slider. During the downward movement of the directional slider, it can also cooperate with the bolt assembly to compress the slider return spring.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0059] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A child stroller wheel orientation structure, comprising a front support (7) and a child wheel assembly (11), wherein the upper and lower ends of the front support (7) are respectively connected to a front foot joint (2) and a front wheel seat (8), a wheel seat inner plug (12) is installed inside the front wheel seat (8), and the insert shaft at the top of the child wheel assembly (11) is rotatably connected to the wheel seat inner plug (12), characterized in that: A cam (1) is rotatably provided in the cavity of the front foot joint (2). A linkage component that cooperates with the cam (1) is provided in the front bracket (7). A directional pin (10) that can move between a directional locking position and a directional unlocking position is slidably provided in the inner plug (12) of the wheel seat. A directional locking hole (13) that cooperates with the directional pin (10) is provided on the child wheel assembly (11). The cam (1) and the directional pin (10) are driven by the linkage component. By rotating the cam (1), the directional pin (10) is displaced between the directional locking position and the directional unlocking position.

2. The directional structure of the child stroller wheel according to claim 1, characterized in that, The cam (1) includes an equal diameter section (1.1), a variable diameter section (1.2) with gradually increasing diameter, and a transition connecting inclined surface (1.3) on the outer periphery of the cam. The two ends of the transition connecting inclined surface (1.3) are respectively connected to the tail ends of the equal diameter section (1.1) and the variable diameter section (1.2), and the other end of the equal diameter section (1.1) is connected to the front section of the variable diameter section (1.2).

3. The directional structure of the child stroller wheel according to claim 2, characterized in that, The linkage includes a directional slider (3) slidably disposed in the upper part of the front bracket (7). The upper end of the directional slider (3) is integrally provided with an extension rod (3.1). The end of the extension rod (3.1) extends into the cavity of the front foot joint (2), and the end of the extension rod (3.1) has an abutment surface (3.2) that cooperates with the cam (1). The abutment surface (3.2) abuts against the outer wall of any one of the equal diameter section (1.1), the variable diameter section (1.2), and the transition connection inclined surface (1.3). The front bracket (7) is provided with a slider return spring (4) that drives the directional slider (3) to move closer to the cam (1). The wheel seat inner plug (12) is provided with a directional return spring (9) that drives the directional pin (10) downward. The directional pin (10) and the directional slider (3) are connected by a soft steel wire (5).

4. The directional structure of the child stroller wheel according to claim 3, characterized in that, The bottom end of the directional slider (3) is provided with a spring mounting groove (3.3), and a slider reset spring (4) is provided in the spring mounting groove (3.3). A bolt assembly (6) is fixed on the front bracket (7). The middle part of the bolt assembly (6) is located in the spring mounting groove (3.3). The slider reset spring (4) is a compression spring, with its upper end abutting against the end of the spring mounting groove (3.3) and its other end abutting against the bolt assembly (6).

5. The directional structure of the child stroller wheel according to claim 4, characterized in that, The directional reset spring (9) is located on one side of the directional pin (10). The inner plug (12) of the wheel seat has a spring mounting cavity. A spring seat (10.1) is provided on the outer wall of the directional pin (10). The bottom end of the directional reset spring (9) abuts against the spring seat (10.1), and the upper end of the directional reset spring (9) abuts against the inner top of the spring mounting cavity.

6. The directional structure of the child stroller wheel according to claim 5, characterized in that, The front support (7) is a hollow rod-shaped structure.

7. The directional structure of the child stroller wheel according to claim 6, characterized in that, The directional pin (10) and the spring seat (10.1) are integrally formed.

8. The directional structure of the child stroller wheel according to claim 7, characterized in that, The directional slider (3) includes a rod that slides in cooperation with the inner wall of the front bracket (7), and the rod is provided with an extension rod (3.1), a spring mounting groove (3.3) and a weight reduction hole.

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