Universal wheel steering control structure suitable for baby carriage and baby carriage
By designing a universal wheel steering control structure, the steering of the universal wheel is controlled by using the limit and unlocking mechanism, the problem of difficult reversal during the implementation of the stroller is solved, and the directional movement and flexible use of the stroller are realized.
Patent Information
- Application Number
- CN202420720084.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-09
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-04-09
AI Technical Summary
During the implementation of the stroller, the interaction of the universal wheels makes the direction difficult to control, which affects the user experience.
A universal wheel steering control structure is designed. Through the coordination of the limiting mechanism and the unlocking mechanism, the steering control of the universal wheel is realized, so that the front wheel universal rear wheel is oriented during initial pushing, the push-and-handle reversing rear wheel unlocks into a universal wheel, and the front wheel orientation becomes a directional wheel, improving the flexibility of use.
The directional movement of the stroller is achieved when the stroller is pushed in reverse, improving the flexibility of the stroller and the convenience of the operation.
Smart Images
Figure CN223161573U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of baby carriages, in particular to a universal wheel steering control structure applicable to baby carriages and a baby carriage. Background Art
[0002] A baby carriage is a tool vehicle designed to facilitate outdoor activities for babies. There are various models. Generally, babies aged 1 to 2 play with baby carriages, and those over 2 years old play with toy cars with wheels. Among them, baby carriages can be divided into full-function baby carriages and lightweight folding baby carriages. Since lightweight folding baby carriages are small, light, and easy to operate with the handle, they are more common. This folding stroller can be used in both sitting and lying positions. After being folded, it does not take up much space even when placed in an electric vehicle, and can also be placed in the trunk of a car or put into a suitcase. However, in actual use, whether it is a full-function baby carriage or a lightweight folding baby carriage, when the push handle of the baby carriage is reversed, due to the interaction of the universal wheels, it is difficult to control the reverse movement during pushing, affecting the use experience. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a universal wheel steering control structure applicable to baby carriages and a baby carriage to solve the above problems.
[0004] The utility model realizes the above purpose through the following technical solutions:
[0005] A universal wheel steering control structure applicable to a baby carriage includes a universal wheel. The universal wheel is movably connected to a mounting frame. A base is arranged on the upper part of the mounting frame. A positioning shaft is arranged on the upper part of the base. The positioning shaft movably penetrates through a sleeve. The sleeve is connected to a foot tube. A limiting mechanism for clamping the base is arranged on the sleeve.
[0006] An unlocking mechanism is arranged on the foot tube. The unlocking mechanism is connected to the limiting mechanism to control the clamping state between the limiting mechanism and the base, so that the universal wheel can be restored to its universal state or maintained in a single direction.
[0007] Preferably, the limiting mechanism includes a limiting baffle. A groove for accommodating the limiting baffle is formed on the sleeve. One end of the limiting baffle is movably arranged in the groove. The other end of the limiting baffle is connected to the unlocking mechanism. When the other end of the limiting baffle is inserted into a locking groove formed on the base, it is used to keep the universal wheel moving in a single direction.
[0008] Preferably, the unlocking structure includes an unlocking member and a reset member. The unlocking member is located inside the leg tube. The unlocking member is connected to the limit baffle through a steel cable, so as to drive the limit baffle to disengage from the locking groove through the steel cable when the unlocking member is unlocked; the reset member is located at the bottom of the leg tube, and the reset member is connected to the limit baffle, so as to push the bottom of the limit baffle into the locking groove when the unlocking member is locked.
[0009] Preferably, the unlocking member includes a sliding tongue sleeve which is arranged inside the leg tube. A sliding tongue is movably arranged inside the sliding tongue sleeve. The sliding tongue is connected to the sliding tongue sleeve through an unlocking spring. The sliding tongue is connected to the limit baffle through a steel cable, and the steel cable passes outwards through the center of the unlocking spring and the opening formed at the bottom of the sliding tongue sleeve.
[0010] Preferably, a limit through hole is formed on the sliding tongue, and a limit shaft is arranged inside the sliding tongue sleeve. The limit shaft passes through the limit through hole to limit the sliding stroke of the sliding tongue.
[0011] Preferably, the reset member includes a reset spring. One end of the reset spring is connected to the leg tube, and the other end of the reset spring is connected to the limit baffle.
[0012] A baby stroller includes a vehicle body, and a universal wheel steering control structure is installed at the lower part of the vehicle body.
[0013] The beneficial effects of the present utility model are as follows:
[0014] The present utility model controls the universal wheel steering function by using a limiting mechanism, and can achieve directional movement when the baby stroller is pushed in the reverse direction. That is, when the baby stroller is normally pushed at the initial stage of use, the front wheels are universal and the rear wheels are directional. After the push handle is reversed, the rear wheels are unlocked and become universal wheels, and the front wheels change from universal wheels to directional wheels, which makes it more convenient to push the baby stroller in the reverse direction. Description of the Drawings
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model.
[0017] Figure 2 It is a schematic diagram of the installation structure of the limit baffle in the present utility model.
[0018] Figure 3 It is a schematic structural diagram of the locking groove in the present utility model.
[0019] Figure 4 It is a schematic structural diagram of the seesaw of the present utility model.
[0020] The description of the reference numerals in the drawings is as follows:
[0021] 1 is a universal wheel, 2 is a foot tube, 3 is a sliding tongue sleeve, 4 is a sliding tongue, 5 is an unlocking spring, 6 is a steel cable, 7 is a limit baffle, 8 is a return spring, 9 is a sleeve, and 10 is a locking groove. Specific embodiments
[0022] The following further elaborates on the technical solution of the present utility model in conjunction with the attached Figures 1-3 drawings:
[0023] Embodiment 1
[0024] As Figures 1-3 shown, this embodiment discloses a universal wheel steering control structure applicable to a baby stroller, including a universal wheel 1, the universal wheel 1 is movably connected to a mounting bracket, a base is provided on the upper part of the mounting bracket, a positioning shaft is provided on the upper part of the base, the positioning shaft is movably inserted into a sleeve 9, and the sleeve 9 is connected to a foot tube 2; that is to say, the foot tube is connected to the mounting bracket on the upper part of the universal wheel through the sleeve, and the foot tube, sleeve, mounting bracket and universal wheel together form the bottom support system of the baby stroller.
[0025] Specifically, as Figure 1 shown, a limiting mechanism for clamping the base is provided on the sleeve 9. That is to say, a movable limiting mechanism is provided on one side of the sleeve. By pressing down or releasing the limiting mechanism to disengage from the base on the mounting bracket, the steering direction of the universal wheel can be controlled. When the limiting mechanism is pressed down and clamped on the base, the mounting bracket cannot rotate left and right under the limiting action of the limit baffle, and thus the universal wheel can only move in a fixed direction; when the limiting mechanism disengages from the base, the universal wheel resumes its universal function.
[0026] In some embodiments, as Figure 2 and Figure 3As shown, the limiting mechanism includes a limiting baffle 7. A groove for accommodating the limiting baffle 7 is formed on the sleeve 9. One end of the limiting baffle 7 is movably disposed in the groove. The other end of the limiting baffle 7 is connected to the unlocking mechanism. When the other end of the limiting baffle 7 is inserted into the locking groove 10 formed on the base, the universal wheel 1 is used to maintain unidirectional movement. In other words, the limiting baffle is movably disposed in the groove on one side of the sleeve. When the limiting baffle is pushed into the locking groove on the base by the unlocking mechanism, the limiting baffle is fixed to the base on the mounting frame, allowing the universal wheel to move in a certain direction. When the limiting baffle is pulled out of the locking groove by the unlocking mechanism, the universal wheel is unlocked and the universal function of the universal wheel is restored.
[0027] It should be noted that if Figure 4 As shown, the limiting mechanism in this embodiment can also be designed as, for example, a gate type or a seesaw type, etc., as long as the limiting mechanism can enter the locking groove under the pushing action of the reset spring.
[0028] Specifically, if Figure 1 As shown, the leg tube 2 is provided with an unlocking mechanism, which is connected to the limiting mechanism and is used to control the locking state between the limiting mechanism and the base, so that the universal wheel 1 can be restored to a universal state or maintained in a unidirectional state. In other words, by using the unlocking mechanism to loosen or insert the limiting mechanism into the locking groove, the left and right rotation of the universal wheel mounting frame can be restricted or released, thereby completing the restoration of the universal wheel's universal rotation function or maintaining a unidirectional state.
[0029] In some embodiments, as Figure 1 As shown, the unlocking structure includes an unlocking member and a reset member. The unlocking member is located in the leg tube 2. The unlocking member is connected to the limit baffle 7 through a steel rope 6, so as to drive the limit baffle 7 to disengage from the locking groove 10 through the steel rope 6 when the unlocking member is unlocked; that is, when the unlocking member is toggled, the unlocking member drives the steel rope, and the steel rope drives the limit baffle to disengage from the locking groove, thereby unlocking the left and right rotation limit of the mounting frame. At this time, the universal wheel resumes the universal rotation function.
[0030] The reset member is located at the bottom of the leg tube 2 and is connected to the limit baffle 7. When the unlocking member is locked, the reset member pushes the bottom of the limit baffle 7 into the locking groove 10. In other words, after the unlocking member moves to the locked position, the steel cable retracts downward. At this time, the compression energy released by the reset member pushes the limit baffle into the locking groove, completing the left and right rotation limit on the mounting frame and further completing the directional movement of the universal wheel.
[0031] In some embodiments, as Figure 1As shown, the unlocking member includes a sliding tongue sleeve 3 which is arranged inside the foot tube 2. A sliding tongue 4 is movably arranged inside the sliding tongue sleeve 3. The sliding tongue 4 is connected to the sliding tongue sleeve 3 through an unlocking spring 5. The sliding tongue 3 is connected to the limiting baffle 7 through a steel cable 6, and the steel cable 6 passes outwards through the center of the unlocking spring 5 and the opening formed at the bottom of the sliding tongue sleeve 3. That is to say, by stepping on the sliding tongue to squeeze the unlocking spring and move it into the sliding tongue sleeve, at this time the steel cable retracts inwards, and the reset member synchronously pushes the limiting baffle into the locking groove; after the steering is completed, when the sliding tongue is released, the sliding tongue resets under the rebounding action of the unlocking spring, and at the same time drives the steel cable and the limiting baffle to disengage from the locking groove, thereby restoring the universal function of the universal wheel.
[0032] It should be noted that a limiting through hole is formed on the sliding tongue 4, and a limiting shaft is arranged inside the sliding tongue sleeve 3. The limiting shaft passes through the limiting through hole to limit the sliding stroke of the sliding tongue. That is to say, by arranging a limiting shaft on the sliding tongue, the extending or retracting distance of the sliding tongue can be limited to prevent the sliding tongue from disengaging from the sliding sleeve.
[0033] In some embodiments, the reset member includes a reset spring 8. One end of the reset spring 8 is connected to the foot tube, and the other end of the reset spring 8 is connected to the limiting baffle 7. That is to say, the kinetic energy released by the reset spring is utilized to be converted into the energy for pushing the limiting baffle into the locking groove, thereby completing the directional limit of the universal wheel; when unlocking, under the released kinetic energy of the unlocking spring, the sliding tongue is pushed out, the steel cable pulls the limiting baffle, and the limiting baffle squeezes the reset spring to restore the universal function of the universal wheel.
[0034] It should be noted that in the unlocked state, the unlocking spring is in a normal state, and the reset spring is in a compressed state.
[0035] Embodiment Two
[0036] A baby stroller includes a vehicle body, and a universal wheel steering control structure is installed at the lower part of the vehicle body. That is to say, the four universal wheels at the lower part of the vehicle body respectively adopt this universal wheel steering control structure, so that when initially used and normally pushed, the front wheels are universal and the rear wheels are directional. After the push handle is reversed, the rear wheels are unlocked to become universal wheels, and the front wheels change from being universal to directional wheels, making it more convenient to push in the reverse direction.
[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.
Claims
1. A universal wheel steering control structure applicable to a baby stroller, comprising a universal wheel, the universal wheel is movably connected to a mounting frame, a base is arranged on the upper part of the mounting frame, a positioning shaft is arranged on the upper part of the base, the positioning shaft is movably inserted into a sleeve, and the sleeve is connected to a foot tube; it is characterized in that, A limiting mechanism for clamping the base is provided on the sleeve; An unlocking mechanism is provided on the leg tube, and the unlocking mechanism is connected to the limiting mechanism to control the clamping state between the limiting mechanism and the base, so that the universal wheel resumes universality or maintains unidirectionality.
2. The swivel wheel steering control structure applicable to a baby carriage according to claim 1, wherein, The limiting mechanism includes a limiting baffle. A groove for accommodating the limiting baffle is formed on the sleeve. One end of the limiting baffle is movably arranged in the groove. When the other end of the limiting baffle is connected to the unlocking mechanism and the other end of the limiting baffle is inserted into a locking groove formed on the base, it is used to keep the universal wheel moving unidirectionally.
3. The swivel wheel steering control structure applicable to a baby carriage according to claim 2, wherein, The unlocking mechanism includes an unlocking member and a reset member. The unlocking member is located inside the leg tube. The unlocking member is connected to the limiting baffle through a steel cable to drive the limiting baffle to disengage from the locking groove through the steel cable when the unlocking member is unlocked; the reset member is located at the bottom of the leg tube, and the reset member is connected to the limiting baffle to push the bottom of the limiting baffle into the locking groove when the unlocking member is locked.
4. The swivel wheel steering control structure applicable to a baby carriage according to claim 3, characterized in that, The unlocking member includes a sliding tongue sleeve. The sliding tongue sleeve is arranged inside the leg tube. A sliding tongue is movably arranged inside the sliding tongue sleeve. The sliding tongue is connected to the sliding tongue sleeve through an unlocking spring. The sliding tongue is connected to the limiting baffle through a steel cable, and the steel cable passes outwards through the center of the unlocking spring and an opening formed at the bottom of the sliding tongue sleeve.
5. The universal wheel steering control structure applicable to a baby carriage according to claim 4, characterized in that, A limiting through hole is formed on the sliding tongue, and a limiting shaft is arranged inside the sliding tongue sleeve. The limiting shaft passes through the limiting through hole to limit the sliding stroke of the sliding tongue.
6. The universal wheel steering control structure applicable to a baby carriage according to claim 3, characterized in that, The reset member includes a reset spring. One end of the reset spring is connected to the leg tube, and the other end of the reset spring is connected to the limiting baffle.
7. A baby carriage, comprising a carriage body, characterized in that, The lower part of the vehicle body is equipped with the universal wheel steering control structure according to any one of claims 1-6.