Foldable mobile carrier

Abstract

The foldable movable carrier includes a locking mechanism, a first rod, and a second rod. The locking mechanism has a locked state and an unlocked state. The first rod is provided with a first mating portion. The second rod is rotatably connected to the first rod, and the second rod is provided with a second mating portion that detachably fits with the first mating portion. When the locking mechanism is in the locked state, the first rod and the second rod are fixed relative to each other. When the locking mechanism is in the unlocked state, when the first mating portion is mated with the second mating portion, the first rod and the second rod are fixed relative to each other, and when the first mating portion and the second mating portion are released from the mating, the first rod can rotate with respect to the second rod to fold or unfold the movable carrier.

Description

[Technical field]

[0001] The present application relates to the technical field of carriers, and in particular to foldable movable carriers. [Background technology]

[0002] Rotatable and foldable carriers, such as foldable strollers, are easy to store and transport, but are also prone to potential safety hazards. According to the test requirements of the European regulation EN1888-1:2018 (8.3.5.1 Test standard for folding systems for ease of storage or transport), there shall be at least two separate and independent manual operating devices that meet the following conditions: if any one of the operating devices is released, the operating device shall automatically return to its original state and the locking device shall lock again. However, in current strollers available on the market, for example, when the locking mechanism on the handle of the stroller is unintentionally pressed, the handle will rotate to a certain extent under the action of the child's weight or its own gravity, so that the locking mechanism cannot return to the locked position, thereby causing a certain safety hazard to the child in the stroller. Summary of the Invention

[0003] Thus, a foldable movable carrier is provided that can prevent rotation of the carrier after unintentional release of the locking mechanism and facilitate re-locking and re-fixing of the movable carrier.

[0004] According to one aspect of the present application, there is provided a collapsible mobile carrier, the carrier comprising: a locking mechanism having a locked state and an unlocked state; a first rod provided with a first fitting portion; a second rod rotatably connected to the first rod and provided with a second fitting portion that detachably fits with the first fitting portion; Equipped with When the locking mechanism is in a locked state, the first rod and the second rod are fixed relative to each other, and when the locking mechanism is in an unlocked state, when the first mating portion engages with the second mating portion, the first rod and the second rod are fixed relative to each other, and when the first mating portion and the second mating portion are released from engagement, the first rod can rotate relative to the second rod to fold or unfold the movable carrier.

[0005] In this foldable movable carrier, when the locking mechanism is unintentionally released, the first rod rotatably connected to the second rod will not rotate because the first and second fitting parts are in a mated state, so that the user can reset the locking mechanism and therefore return the first rod to the locked state, thereby improving the safety of the entire foldable movable carrier. Furthermore, when it is actually necessary to release the locking, the locking mechanism can be pressed, for example, by applying a certain external force, so that the first and second fitting parts can be released from the engagement, so that the first rod can be rotated and folded relative to the second rod, ensuring the realization of the foldable function of the movable carrier.

[0006] In one embodiment, the first mating portion is a male connector and the second mating portion is a female connector that is removably matable with the male connector, or the first mating portion is a female connector and the second mating portion is a male connector that is removably matable with the female connector.

[0007] In one embodiment, one of the first fitting portion and the second fitting portion is an engagement groove, and the other of the first fitting portion and the second fitting portion is an engagement protrusion engageable with the engagement groove.

[0008] In one embodiment, the engagement groove is a V-groove. The V-groove includes a first groove wall and a second groove wall arranged in a V-shape. The engagement protrusion is an arc-shaped protrusion capable of contacting the first groove wall and the second groove wall.

[0009] In one embodiment, the included angle between the first groove wall and the plane on which the opening of the V-groove is located is in the range of 40° to 50°. The included angle between the second groove wall and the plane on which the opening of the V-groove is located is in the range of 40° to 50°. The height of the arc-shaped protrusion is in the range of 1.5mm to 2.5mm.

[0010] In one embodiment, the engagement protrusion is a sawtooth protrusion having at least two engagement teeth. The engagement groove is a sawtooth groove having at least two engagement grooves. The at least two engagement teeth can be engaged with the at least two engagement grooves one by one.

[0011] In one embodiment, one of the first fitting portion and the second fitting portion is a plug hole, and the other of the first fitting portion and the second fitting portion is a plug pin that is insertable into the plug hole.

[0012] In one embodiment, the wall of the plug hole is elastically deformable, and when the wall of the plug hole is elastically deformed, the inner diameter of the plug hole is larger than the diameter of the plug pin, and when the wall of the plug hole is restored to its original shape, the inner diameter of the plug hole is smaller than the diameter of the plug pin; or, the plug pin is elastically deformable, and when the plug pin is elastically deformed, the diameter of the plug pin is smaller than the inner diameter of the plug hole, and when the plug pin is restored to its original state, the diameter of the plug pin is larger than the inner diameter of the plug hole.

[0013] In one embodiment, the foldable movable carrier further includes a third rod. The first rod has a first position, a second position, and a third position that are sequentially spaced apart in an extension direction of the first rod. The first fitting portion is disposed at the third position. The third rod is rotatably connected to the first rod at the first position via a locking mechanism. When the locking mechanism is in a locked state, the first rod and the third rod are relatively fixed. When the locking mechanism is in an unlocked state, the first rod can rotate relative to the third rod to fold or unfold the movable carrier. The second rod is rotatably connected to the first rod at the second position.

[0014] In one of the embodiments, a first rotation sector is provided at the end of a first rod. A second rotation sector is provided at the end of a second rod. The first rotation sector faces the second rotation sector. The second position is located at a circular center of the first rotation sector. The circular center of the second rotation sector is rotatably connected to the first rotation sector at the second position. The first mating portion is located at a periphery of a face of the first rotation sector facing the second rotation sector. The second mating portion is located at a periphery of a face of the second rotation sector facing the first rotation sector.

[0015] In one embodiment, the stopper is located on a side of the second rotation sector closer to the third rod. Relatively fixed When this happens, the first rotating sector abuts against the stopper.

[0016] In one embodiment, the locking mechanism comprises: a first locking shell fixed to the first rod and including a first locking groove; a second locking shell fixed to the third rod and having a second locking groove; a locking member having at least two locking teeth arranged at a predetermined angle, the shape of the first locking groove and the second locking groove being adapted to the shape of the locking member, the locking member having a locked state and an unlocked state, when the locking member is in the locked state, the locking member is disposed in both the first locking shell and the second locking shell to restrict rotation of the second locking shell relative to the first locking shell, and when the locking member is in the unlocked state, the locking member is withdrawn from the first locking groove or the second locking groove to allow the second locking shell to rotate relative to the first locking shell; a resilient member operatively connected to the locking member to maintain the locking member in the locked state; a release member operatively connected to the locking member to drive the locking member to move against the elastic force of the elastic member to switch the locking member from a locked state to an unlocked state; Includes. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a perspective schematic diagram of a movable carrier according to an embodiment of the present application, in which the movable carrier is in a locked state; [Diagram 2] FIG. 2 is a schematic perspective view of a movable carrier according to an embodiment of the present application, in which the movable carrier is unlocked and rotatable; [Diagram 3] FIG. 2 is a cross-sectional view taken along line AA in FIG. [Figure 4] 2 is a partially exploded view from one perspective of the movable carrier of FIG. 1. [Diagram 5] 2 is a partially exploded view of the movable carrier of FIG. 1 from another perspective. [Figure 6] 2 is a partially exploded view of the movable carrier of FIG. 1 from yet another perspective. [Figure 7] 2 is a perspective schematic view of a first rod of the movable carrier of FIG. 1; FIG. [Explanation of symbols]

[0018] 100 First Rod 101 first fitting portion 110 1st position 120 2nd position 130 3rd position 140 First Rotating Sector 141 Arc-shaped guide groove 150 Engagement groove 151 First Groove Wall 152 Second Ditch Wall 200 Third Rod 300 Second Rod 301 Second fitting part 310 Second Rotating Sector 311 Circular guide rib 312 Stopper 320 Engagement protrusion 400 Locking mechanism 410 First locking shell 411 First locking groove 420 Elastic Members 430 Locking member 431 Locking teeth 440 Second locking shell 441 Through hole 442 Second locking groove 450 Release member 451 Pressing part 20 Handle 30 Front Support 40 Rear support DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] As shown in Fig. 1-2, an embodiment of the present application provides a foldable mobile carrier. The foldable mobile carrier includes a first rod 100, a third rod 200, and a second rod 300. In this embodiment, the carrier may be a stroller. The stroller includes a handle 20, a front support 30, and a rear support 40. In this embodiment, the first rod 100, the third rod 200, and the second rod 300 are all hollow rods, and are sleeved at the end of the handle 20, the end of the rear support 40, and the end of the front support 30, respectively. Of course, in other embodiments, the first rod 100, the third rod 200, and the second rod 30 may be connected to the handle 20, the rear support 40, and the front support 30, respectively, by other means. Alternatively, the first rod 100, the third rod 200, and the second rod 300 are formed as a part of the handle 20, a part of the rear support 40, and a part of the front support 30, respectively. In short, the present invention can be achieved as long as the handle 20, the front support 30, and the rear support 40 can be driven and moved by the movement of the first rod 100, the third rod 200, and the second rod 300. The foldable movable carrier 10 can prevent the handle 20 of the stroller from rotating after the locking mechanism 400 is unintentionally released, so that the stroller can be re-locked and the safety performance of the stroller can be improved.

[0020] Specifically, as shown in Fig. 2 and Fig. 7, the first rod 100 includes a first position 110, a second position 120, and a third position 130, which are sequentially spaced apart in the extending direction of the first rod 100. It should be noted that the structure of the movable carrier of the present application is not limited to the present specification. In this embodiment, the first rod 100 is sleeved to the lower end of the handle 20. Indeed, the first rod 100 can be connected to the lower end of the handle 20 or formed as a part of the lower end of the handle 20. The first fitting portion 101 is disposed in the third position 130.

[0021] The third rod 200 is pivotally connected to the first rod 100 at the first position 110 via a locking mechanism 400. The locking mechanism 400 has a locked state and an unlocked state. When the locking mechanism 400 is in the locked state, the first rod 100 and the third rod 200 are relatively fixed and arranged at a first preset included angle. When the locking mechanism 400 is in the unlocked state, the first rod 100 is rotatable relative to the third rod 200. In this embodiment, the third rod 200 is sleeved to the upper end of the rear support 40. Indeed, the third rod 200 can be connected to the upper end of the rear support 40 or formed as a part of the upper end of the rear support 40 by other means. In this embodiment, the first preset included angle is an acute angle.

[0022] In this embodiment, as shown in Figs. 4 to 6, the locking mechanism 400 includes a first locking shell 410, an elastic member 420, a locking member 430, a second locking shell 440, and a release member 450, which are arranged in order. The first locking shell 410 is fixed to the first rod 100 or is a part of the first rod 100. The first locking shell 410 includes a first locking groove 411. The second locking shell 440 is fixed to the third rod 200 or is formed as a part of the third rod 200. The second locking shell 440 includes a second locking groove 442. The locking member 430 includes at least two locking teeth 431 arranged at a predetermined angle. The shapes of the first locking groove 411 and the second locking groove 442 are both adapted to the shape of the locking member 430. In this embodiment, the locking member 430 is a gear-shaped locking member 430. The first locking groove 411 and the second locking groove 442 are both gear-shaped locking grooves that fit with the gear-shaped locking member 430. The locking member 430 has a locked state and an unlocked state. When the locking member 430 is in the locked state, the locking member 430 is disposed on both the first locking shell 410 and the second locking shell 440 to restrict the rotation of the second locking shell 440 relative to the first locking shell 410. When the locking member 430 is in the unlocked state, the locking member 430 is pulled out of the first locking groove 411 or the second locking groove 442 to allow the second locking shell 440 to rotate relative to the first locking shell 410. The elastic member 420 is operably connected to the locking member 430 to maintain the locking member 430 in a locked state. In this embodiment, the elastic member 420 is a spring. Both ends of the spring abut against the first locking shell 410 and the locking member 430, respectively. The release member 450 is operably connected to the locking member 430 to drive the locking member 430 to move against the elastic force of the elastic member 420 to switch the locking member 430 from a locked state to an unlocked state. In this embodiment, the release member 450 is a release button. The release button is provided with a pressing portion 451. The second locking shell 440 is provided with a through hole 441 through which the pressing portion 451 can pass.

[0023] In this way, when the release member 450 is not pressed and when the locking member 430 is in the locked state, the locking member 430 is locked to both the first locking shell 410 and the second locking shell 440 by the elastic force of the elastic member 420, which is a return spring. In this case, the first locking shell 410 and the second locking shell 440 are in the locked state, that is, the first rod 100 and the third rod 200 are in the locked state. When the release member 450 is pressed, the pressing portion 451 passes through the through hole 441 and can press the second locking shell 440 and the locking member 430, thereby separating the locking member 430 from the first locking groove 411 or the second locking groove 442. In this case, the first locking shell 410 and the second locking shell 440 are in a release state, i.e., the first rod 100 is rotatable relative to the third rod 200. The locking mechanism 400 may have a simple structure and allow the first rod 100 and the third rod 200 to switch between a locked state and an unlocked state. However, if the release member 450 is unintentionally pressed, the first rod 100 will rotate under the action of an external force or its own gravity, so that the locking teeth 431 of the locking member 430 will be misaligned with the first locking groove 411 or the second locking groove 442, thereby causing the first locking shell 410 and the second locking shell 440 to be in the locked state again. So that it will be difficult to return , it is difficult for the locking member 430 to re-engage with the first locking groove 411 or the second locking groove 442. That is, it is difficult to lock and fix the first rod 100 and the third rod 200 relative to each other again.

[0024] The second rod 300 is rotatably connected to the first rod 100 at the second position 120. The second rod 300 is provided with a second fitting portion 301 that detachably fits with the first fitting portion 101. When the first fitting portion 101 fits with the second fitting portion 301, the first rod 100 and the second rod 300 are relatively fixed and arranged at a second preset included angle. When the first fitting portion 101 and the second fitting portion 301 are disengaged, the first rod 100 can rotate relative to the second rod 300, and the included angle between the first rod 100 and the second rod 300 facing the third rod 200 is equal to or less than the second preset included angle. In this embodiment, the second preset included angle is 180 degrees. In this way, when the first fitting portion 101 fits with the second fitting portion 301, the first rod 100 and the second rod 300 are on the same straight line. In addition, since the first preset included angle is an acute angle, when the locking mechanism 400 is in the locked and fixed state, the combined structure of the first rod 100, the second rod 300, and the third rod 200 forms a triangular support structure. Furthermore, since the included angle between the first rod 100 and the second rod 300 facing the third rod 200 is always kept below the second preset included angle, that is, when the locking mechanism 400 is in the locked state, the first rod 100 can be easily moved from the third rod 200 to the second rod 300. In the direction of Also, the second rod 300 to the third rod 200 In the direction of Therefore, when the locking mechanism 400 is in the locked state, the first rod 100 and the second rod 300 cannot rotate. 2 This allows the stroller to be kept at a preset angle of 0.05 mm, thereby providing a stable triangular support structure for the entire stroller.

[0025] In this way, when the locking mechanism 400 is in the locked state, the first rod 100, the second rod 300, and the third rod 200 form a stable triangular support structure, so that the first rod 100 and the second rod 300 are fixed relative to each other, and the first rod 100 and the third rod 200 are also fixed relative to each other. When the locking mechanism 400 is unintentionally pressed and released from the lock, the first fitting portion 101 that fits with the second fitting portion 301 of the second rod 300 is disposed at the third position 130 of the first rod 100, so that the first fitting portion 101 fits with the second fitting portion 301, the first rod 100 and the second rod 300 are still fixed relative to each other, and the first rod 100 does not rotate. This prevents the first rod 100 from rotating in an unintended released state in which the locking mechanism 400 cannot be returned to the locked state and the first rod 100 and the second rod 300 cannot be locked and fixed. When it is necessary to fold the foldable movable carrier 10, the locking mechanism 400 is released and at the same time a specific external force is applied to the first rod 100, thereby releasing the engagement between the first fitting portion 101 and the second fitting portion 301. This releases the relative fixed state of the first rod 100, the third rod 200, and the second rod 300, and allows the foldable movable carrier 10 to be folded.

[0026] In one embodiment, as shown in Figs. 4 to 7, a first rotating sector 140 is provided at the lower end of the first rod 100, and a second rotating sector 310 is provided at the upper end of the second rod 300. The second position 120 is disposed at the circle center of the first rotating sector 140. The circle center of the second rotating sector 310 is rotatably connected to the first rotating sector 140 (i.e., the circle center of the first rotating sector 140) at the second position 120. At least two arc-shaped guide grooves 141 concentric with the first rotating sector 140 are provided on the surface of the first rotating sector 140 facing the second rotating sector 310. At least two arc-shaped guide ribs 311 concentric with the second rotating sector 310 are provided on the surface of the second rotating sector 310 facing the first rotating sector 140. The arc-shaped guide rib 311 fits into the arc-shaped guide groove 141 in a one-to-one correspondence to guide the rotation of the first rod 100 and the second rod 300 and facilitate the folding of the movable carrier. It can be understood that the position of the arc-shaped guide groove 141 and the position of the arc-shaped guide rib 311 are interchangeable.

[0027] In one embodiment, as shown in Fig. 6 and Fig. 7, the first mating portion 101 is arranged on the periphery of the surface of the first rotating sector 140 facing the second rotating sector 310, and the second mating portion 301 is arranged on the periphery of the surface of the second rotating sector 310 facing the first rotating sector 140. Thus, the distance from the second position 120 to the third position 130 is relatively large. According to the lever principle, when the movable carrier is folded, the external force that needs to be applied to release the mating between the first mating portion 101 and the second mating portion 301 is smaller, which means that less effort is required when the movable carrier is folded. Of course, the positions of the first mating portion 101 and the second mating portion 301 can also be arranged according to actual needs. For example, the first mating portion 101 and the second mating portion 301 can be positioned closer to the circular center of the first rotating sector 140 and the circular center of the second rotating sector 310, respectively, so that, for example, the first rod 100 is less likely to rotate when the locking mechanism 400 is unintentionally released, but this is not limited to this specification.

[0028] Also, a stopper 312 is arranged on the side of the second rotating sector 310 closer to the third rod 200. When the first rod 100 and the second rod 300 are arranged at the second preset included angle, the first rotating sector 140 abuts against the stopper 312. The stopper 312 may be a stop protrusion, a stop ramp, etc. In this embodiment, the stopper 312 is a stop ramp arranged on the periphery of the face of the second rotating sector 310 facing the first rotating sector 140, and the stop ramp gradually rises in the direction approaching the third rod 200. In this way, it is possible to ensure that the included angle between the first rod 100 and the second rod 300 facing the third rod 200 is always equal to or smaller than the second preset included angle.

[0029] Optionally, the first mating portion 101 is a male connector and the second mating portion 301 is a female connector that can be detachably mated with the male connector. Or, the first mating portion 101 is a female connector and the second mating portion 301 is a male connector that can be detachably mated with the female connector.

[0030] In one embodiment, as shown in Figures 6 and 7, the first fitting portion 101 is the engagement groove 150, and the second fitting portion 301 is the engagement protrusion 320 that can be engaged with the engagement groove 150. In this way, when the locking mechanism 400 is unintentionally released, the engagement protrusion 320 of the second rod 300 is engaged with the engagement groove 150 of the first rod 100, so that the first rod 100 is not easily rotated under the action of an external force or its own weight, so that the locking mechanism 400 can be returned to the locked state again, and the movable carrier can be re-locked and re-fixed. When the movable carrier needs to be folded, it is only necessary to apply a certain external force to the first rod 100 to rotate the engagement protrusion 320 from the engagement groove 150, and the folding function of the movable carrier is ensured. It can be understood that the first mating portion 101 may be the engagement protrusion 320 and the second mating portion 301 may be the engagement groove 150 engageable with the engagement protrusion 320 .

[0031] In this embodiment, the engagement groove 150 is disposed on the periphery of the face of the first rotating sector 140 facing the second rotating sector 310, and the engagement protrusion 320 is disposed on the periphery of the face of the second rotating sector 310 facing the first rotating sector 140. Of course, in other embodiments, the engagement groove 150 may also be disposed in other positions of the first rotating sector 140, and the engagement protrusion 320 may also be disposed in other positions of the second rotating sector 310.

[0032] Also, the engagement groove 150 is a V-shaped groove as shown in FIG. 3. The V-shaped groove includes a first groove wall 151 and a second groove wall 152 arranged in a V-shape. The engagement protrusion 320 is an arc-shaped protrusion that can contact the groove wall of the V-shaped groove. That is, the cross-sectional shape of the engagement groove 150 perpendicular to the first rod 100 is V-shaped, and the cross-sectional shape of the engagement protrusion 320 perpendicular to the third rod 200 is arc-shaped. This allows the engagement protrusion 320 to be more smoothly engaged with the engagement groove 150 when the first rod 100 rotates and engages with the third rod 200 to be fixed. When the fixation between the first rod 100 and the third rod 200 is released, the engagement protrusion 320 can also easily rotate and come out of the engagement groove 150. Optionally, the first included angle between the first groove wall 151 and the plane on which the opening of the V-shaped groove is located is within a range of 40° to 50°. In this embodiment, the first included angle is 45°. The second included angle between the second groove wall 152 and the plane on which the opening of the V-groove is located is in the range of 40° to 50°. In this embodiment, the second included angle is 45°. The height of the arc-shaped protrusion is in the range of 1.5 mm to 2.5 mm. In this embodiment, the height is 2 mm. With the above configuration, , person in charge Even if the locking mechanism 400 is unintentionally released, the realization of the folding function of the movable carrier is not affected. Therefore, the first rod 100 can be prevented from rotating. .

[0033] Moreover, the engagement protrusion 320 is a sawtooth protrusion with at least two engagement teeth, and the engagement groove 150 is a sawtooth groove including at least two engagement grooves. The at least two engagement teeth can be fitted into at least two engagement grooves one by one. Compared with the fitting between a single protrusion and a groove, the fitting structure between the sawtooth protrusion and the sawtooth groove can provide a larger friction force, so that the first rod 100 has a stronger anti-rotation ability during unintentional release. Indeed, under the same required anti-rotation ability condition, the height of the sawtooth protrusion can be smaller than the height of a single protrusion, and the depth of the corresponding engagement groove 150 can also be smaller than the depth of a single groove.

[0034] In another embodiment, the first mating portion 101 may be a plug hole, and the second mating portion 301 may be a plug pin that can be inserted into the plug hole. In this way, when the locking mechanism 400 is unintentionally unlocked, the plug pin of the first rod 100 is inserted into the plug hole of the second rod 300, so that the first rod 100 is not easily rotated under the action of an external force or its own gravity, so that the locking mechanism 400 can be easily returned to the locked state again, and the foldable movable carrier 10 can be re-locked and re-fixed. When the movable carrier needs to be folded, it is only necessary to apply a certain external force to the first rod 100 to rotate the plug pin outward from the plug hole, thereby ensuring the folding function of the foldable movable carrier. It can be understood that the first mating portion 101 can also be a plug pin, and the second mating portion 301 can also be a plug hole that can be inserted by the plug pin.

[0035] Also, the hole wall of the plug hole can be elastically deformed. When the hole wall of the plug hole is elastically deformed, the inner diameter of the plug hole is larger than the diameter of the plug pin. When the hole wall of the plug hole is restored to its original shape, the inner diameter of the plug hole is smaller than the diameter of the plug pin. Or, the plug pin can be elastically deformed. When the plug pin is elastically deformed, the diameter of the plug pin is smaller than the inner diameter of the plug hole, and when the plug pin is restored to its original state, the diameter of the plug pin is larger than the inner diameter of the plug hole. On the one hand, this configuration makes it easy for the plug pin to be inserted into the plug hole and stably holds the plug pin in the plug hole without easily coming out of the plug hole, and on the other hand, this configuration is also convenient for the plug pin to come out of the plug hole when an external force is applied.

[0036] Optionally, both the first rod 100 and the second rod 300 are made of a deformable plastic material to facilitate mating and separation of the first mating portion 101 and the second mating portion 301 .

[0037] The above-described foldable movable carrier 10 provides at least the following technical advantages.

[0038] When the locking mechanism 400 is unintentionally released from the locking state, the first rod 100 rotatably connected to the second rod 300 is difficult to rotate because the first mating portion 101 and the second mating portion 301 are in the mated state, so that the user can reset the locking mechanism 400, and thus the movable carrier can be returned to the locked and fixed state, thereby improving the safety of the entire movable carrier. Furthermore, when it is actually necessary to release the locking, the locking mechanism 400 can be pushed, for example, by applying a certain external force, so that the first mating portion 101 and the second mating portion 301 can be released from the mating, so that the first rod 100 can be rotated and folded relative to the second rod 300, ensuring the realization of the foldable function of the movable carrier.

[0039] The technical features of the above-mentioned embodiments can be combined in any way. For the sake of simplicity, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, all combinations of these technical features shall be included within the scope of the present application, unless they are mutually inconsistent.

[0040] The above embodiments are merely illustrative of some embodiments of the present application, and the description is relatively specific and detailed. However, they should not be understood as limitations on the patent scope of the present application. It should be noted that those skilled in the art can still make some modifications and improvements without departing from the concept of the present application, and the modifications and improvements are included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A foldable mobile carrier (10), comprising: a locking mechanism (400) having a locked state and an unlocked state; A first rod (100) provided with a first fitting portion (101); A second rod (300) rotatably connected to the first rod (100) and provided with a second fitting portion (301) that detachably fits with the first fitting portion (101); Equipped with When the locking mechanism (400) is in the locked state, the first rod (100) and the second rod (300) are fixed relative to each other, and when the locking mechanism (400) is in the unlocked state, when the first fitting portion (101) is engaged with the second fitting portion (301), the first rod (100) and the second rod (300) are fixed relative to each other, and when the first fitting portion (101) is disengaged from the second fitting portion (301), the first rod (100) is rotatable relative to the second rod (300) to fold or unfold the movable carrier (10). A foldable mobile carrier (10).

2. 2. The foldable movable carrier (10) of claim 1, wherein the first mating portion (101) is a male connection portion and the second mating portion (301) is a female connection portion that can be removably mated with the male connection portion, or the first mating portion (101) is a female connection portion and the second mating portion (301) is a male connection portion that can be removably mated with the female connection portion.

3. A foldable movable carrier (10) as described in claim 1 or 2, wherein one of the first mating portion (101) and the second mating portion (301) is an engagement groove (150), and the other of the first mating portion (101) and the second mating portion (301) is an engagement protrusion (320) engageable with the engagement groove (150).

4. The foldable movable carrier (10) of claim 3, wherein the engagement groove (150) is a V-groove, the V-groove having a first groove wall (151) and a second groove wall (152) arranged in a V shape, and the engagement protrusion (320) is an arc-shaped protrusion capable of contacting the first groove wall (151) and the second groove wall (152).

5. 5. The foldable movable carrier (10) of claim 4, wherein an included angle between the first groove wall (151) and a plane in which the opening of the V-groove is located is in the range of 40° to 50°, an included angle between the second groove wall (152) and a plane in which the opening of the V-groove is located is in the range of 40° to 50°, and a height of the arc-shaped protrusion is in the range of 1.5 mm to 2.5 mm.

6. The foldable movable carrier (10) of claim 3, wherein the engagement protrusion (320) is a sawtooth protrusion having at least two engagement teeth, the engagement groove (150) is a sawtooth groove having at least two engagement grooves, and the at least two engagement teeth are capable of being fitted into the at least two engagement grooves one by one.

7. The foldable movable carrier (10) of claim 2, wherein one of the first mating portion (101) and the second mating portion (301) is a plug hole, and the other of the first mating portion (101) and the second mating portion (301) is a plug pin that can be inserted into the plug hole.

8. a hole wall of the plug hole is elastically deformable, and when the hole wall of the plug hole is elastically deformed, an inner diameter of the plug hole is larger than a diameter of the plug pin, and when the hole wall of the plug hole is restored to its original shape, the inner diameter of the plug hole is smaller than the diameter of the plug pin; or the plug pin is elastically deformable, and when the plug pin is elastically deformed, a diameter of the plug pin is smaller than an inner diameter of the plug hole, and when the plug pin is returned to its original state, the diameter of the plug pin is larger than the inner diameter of the plug hole; A foldable mobile carrier (10) according to claim 7.

9. The present invention further includes a third rod (200), and the first rod (100) has a first position (110), a second position (120), and a third position (130) that are sequentially spaced apart in the extension direction of the first rod (100), and the first fitting portion (101) is disposed at the third position (130), and the third rod (200) is rotatably connected to the first rod (100) at the first position (110) via the locking mechanism (400), and the locking mechanism (400) is in the locked state.

2. The foldable movable carrier (10) of claim 1, wherein when the locking mechanism (400) is in the unlocked state, the first rod (100) and the third rod (200) are fixed relative to each other, and when the locking mechanism (400) is in the unlocked state, the first rod (100) is rotatable relative to the third rod (200) to fold or unfold the movable carrier (10), and the second rod (300) is pivotally connected to the first rod (100) at the second position (120).

10. The first rod (100) has an end with a first rotation sector (140), the second rod (300) has an end with a second rotation sector (310), the first rotation sector (140) faces the second rotation sector (310), the second position (120) is located at the circle center of the first rotation sector (140), and the circle center of the second rotation sector (310) is located at the circle center of the second position ( 10. The foldable mobile carrier (10) of claim 9, wherein the carrier (10) is rotatably connected to the first rotation sector (140) at a first mating portion (101) and a second mating portion (301) are arranged on the periphery of a face of the first rotation sector (140) facing the second rotation sector (310), and the second mating portion (301) is arranged on the periphery of a face of the second rotation sector (310) facing the first rotation sector (140).

11. A foldable movable carrier (10) as described in claim 10, wherein a stopper (312) is arranged on a side of the second rotation sector (310) close to the third rod (200), and when the first rod (100) and the second rod (300) are fixed relative to each other, the first rotation sector (140) abuts against the stopper (312).

12. The locking mechanism (400) comprises: a first locking shell (410) fixed on the first rod (100) and having a first locking groove (411); a second locking shell (440) fixed to the third rod (200) and having a second locking groove (442); A locking member (430) comprising at least two locking teeth (431) arranged at a predetermined angle, wherein the shape of the first locking groove (411) and the second locking groove (442) are adapted to the shape of the locking member (430), the locking member (430) has a locked state and an unlocked state, and when the locking member (430) is in the locked state, the locking member (430) is engaged with the first locking shell (410) and the second locking shell (442). a locking member (430) disposed in both the first locking groove (411) and the second locking groove (442) to limit the rotation of the second locking shell (440) relative to the first locking shell (410), and when the locking member (430) is in the unlocked state, the locking member (430) is pulled out of the first locking groove (411) or the second locking groove (442) to allow the second locking shell (440) to rotate relative to the first locking shell (410); a resilient member (420) operatively connected to the locking member (430) to maintain the locking member (430) in the locked state; a release member (450) operatively connected to the locking member (430) to drive the locking member (430) to move against the elastic force of the elastic member (420) to switch the locking member (430) from the locked state to the unlocked state; A foldable mobile carrier (10) according to any one of claims 9 to 11, comprising:

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