Child safety seat and supporting device

Abstract

Providing child safety seats and supporting devices thereof The support device (100) includes a support leg body (10), a bottom leg (20), a trigger (30), and an alarm unit (40). The bottom leg (20) is connected to a lower end of the support leg body (10), and the bottom leg (20) and the support leg body (10) form a receiving space (S). The trigger (30) is movably connected to the bottom leg (20) and is movable between a first position and a second position. In the first position, at least a portion of the trigger (30) protrudes from the bottom leg (20), and in the second position, the trigger (30) is received in the receiving space (S). The alarm unit (40) includes a switch module (410) and a wireless module (420). The switch module (410) is configured to obtain a floor contact signal indicating that the trigger (30) is in the second position, and the wireless module (420) is in signal communication with the switch module (410).

Description

[Technical field]

[0001] This application claims priority to Chinese Patent Application No. 202210523214.1 filed on May 13, 2022 (filing date: May 13, 2022, titled "EXTENDABLE AND RETRACTABLE LEG AND CHILD SAFETY SEAT") and Chinese Patent Application No. 202211335936.0 filed on October 28, 2022 (filing date: October 28, 2022, titled "CHILD SAFETY SEAT AND SUPPORT DEVICE THEREOF"), the entire contents of which are incorporated herein by reference in their entirety. The present disclosure relates to the technical field of infant products, and more particularly to a child safety seat mounted in a vehicle and its support device. [Background technology]

[0002] A child safety seat is a device specially designed for children of different weights and ages. By restraining a child in a safety seat while riding in a car, it can cushion the child's body and limit their movement during a car crash or sudden deceleration.

[0003] In order to prevent the child safety seat from moving forward or to avoid the child safety seat from rolling over when the child safety seat is hit hard by a collision or sudden braking of the vehicle, the safety seat of the related art is generally provided with a support device. In the child safety seat, the support device is generally rotatably attached to the front end of the base of the child safety seat. The support device has a folded position where the support device is hidden in or under the base, and an unfolded position where the support device abuts against the interior floor of the vehicle. When the child safety seat is fixed to the seat in the vehicle, the support device is switched from the folded position to the unfolded position. Then, the length of the support device is adjusted according to the actual situation so that the support device abuts firmly against the interior floor of the vehicle, so that the support device can reliably support the front end of the base of the child safety seat, effectively preventing the child safety seat from tilting forward when the vehicle is suddenly braked, and improving the safety of the child.

[0004] After the child safety seat is attached to the seat of the vehicle, the support device is brought into contact with the floor of the vehicle, thereby improving the attachment stability of the child safety seat. Summary of the Invention [Problem to be solved by the invention]

[0005] When the support device is in use, the support device may not be in contact with the floor surface of the vehicle. In the related art, a support indicator is provided on the child safety seat to indicate whether the support device is attached to a predetermined position. However, the position of the support device may change due to the acceleration / deceleration and turning of the vehicle while traveling.

[0006] Further, the support device generally includes a first leg tube and a second leg tube. The first leg tube has two or more locating holes disposed therein. The second leg tube is slidably sleeved within the first leg tube and has a second engagement member disposed therein. The second engagement member can be engaged with any of the locating holes to lock the extended or retracted position of the second leg tube relative to the first leg tube, and can be disengaged from the locating holes to allow the extended or retracted position of the second leg tube relative to the first leg tube to be adjustable. To ensure the strength of the locking and the strength of the abutment support against the floor surface of the support device, the second engagement member, the first leg tube and the second leg tube are generally made of a metal material. [Means for solving the problem]

[0007] In one aspect, an embodiment of the present disclosure provides a support device applied to a child safety seat. The support device includes a support leg body, a bottom leg, a trigger, and an alarm unit. The bottom leg is connected to a lower end of the support leg body and forms a receiving space between the bottom leg and the support leg body. The trigger is movably coupled to the bottom leg. The trigger is movable between a first position where at least a portion of the trigger protrudes from the bottom leg and a second position where the trigger is received within the receiving space. The alarm unit includes a switch module configured to obtain a floor contact signal indicating that the trigger is in the second position, and a wireless module in signal communication with the switch module.

[0008] In another aspect, an embodiment of the present disclosure provides a support device including a first leg tube having a plurality of first positioning holes in a vertical direction, a second leg tube slidably sleeved within the first leg tube, a locking device attached to the second leg tube and having a second engagement member, the second engagement member moving between a locked position in which the second engagement member engages with the corresponding positioning hole and an unlocked position in which the second engagement member is pulled out of the corresponding positioning hole, and a buffer member provided on at least one of an inner side wall of the first leg tube and the second engagement member to buffer a collision between the second engagement member and the first leg tube when the second leg tube slides.

[0009] In yet another aspect, an embodiment of the present disclosure provides a child safety seat, the front end of the base of the child safety seat comprising the above-mentioned support device, the first leg tube of the support device being connected to the front end of the base. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing a child safety seat according to some embodiments of the present disclosure, with the support device in an unfolded state and the seat body not shown. [Diagram 2] FIG. 2 is another perspective view showing a child safety seat according to some embodiments of the present disclosure, with the support device in a folded state and the seat body not shown. [Diagram 3] FIG. 3 is yet another perspective view of a child safety seat according to some embodiments of the present disclosure, with the support device in an unfolded state and the upper housing of the seat body and base not shown. [Figure 4] FIG. 4 is a cross-sectional view of a support device according to some embodiments of the present disclosure. [Diagram 5] FIG. 5 is a partially enlarged view of a portion X in FIG. [Figure 6] FIG. 6 is a schematic diagram of the support apparatus of FIG. 4, without showing the support leg structure and support members. [Figure 7] FIG. 7 is a perspective view of a support apparatus according to some embodiments of the present disclosure. [Figure 8] FIG. 8 is an exploded schematic view of a locking structure according to some embodiments of the present disclosure. [Figure 9] FIG. 9 is another perspective view of a support device according to some embodiments of the present disclosure. [Figure 10] FIG. 10 is a vertical cross-sectional view of a support device according to some embodiments of the present disclosure, with the second engagement member engaged with the locating hole. [Figure 11] FIG. 11 is another longitudinal cross-sectional view of a support device according to some embodiments of the present disclosure, with the second engagement member and second shaft shown exploded for ease of understanding. [Figure 12] FIG. 12 is a cross-sectional view of a second pedestal tube of a support apparatus according to some embodiments of the present disclosure. [Figure 13] FIG. 13 is a perspective view of a rod-like adjustment member of a support device according to some embodiments of the present disclosure. [Figure 14] FIG. 14 is a perspective view of a first pedestal tube of a support apparatus according to some embodiments of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Exemplary embodiments will be described more comprehensively with reference to the accompanying drawings. However, exemplary embodiments can be implemented in various forms and should not be understood to be limited to the embodiments described herein. On the contrary, these embodiments are provided so that this disclosure will be comprehensive and complete, and the concept of exemplary embodiments can be comprehensively understood by those skilled in the art. The same reference numerals in the drawings indicate the same or similar structures, and therefore detailed description will be omitted below.

[0012] As shown in FIG. 1 to FIG. 3, a child safety seat according to some embodiments of the present disclosure includes a base 200 and a support device 100 according to any embodiment of the present disclosure. The base 200 may be attached to a vehicle. For example, the base 200 may be attached to the vehicle by an ISOFIX socket attachment manner, a seat belt attachment manner, or the like. An end of the support device 100 is connected to the base 200. For example, the support device 100 is connected to a front end of the base 200. The child safety seat further includes a seat body (not shown). The seat body is disposed on the base 200 so that a child can be seated thereon. After the base 200 is mounted on the vehicle, the other end of the support device 100 abuts against the floor of the vehicle, and the child safety seat is stably mounted on the vehicle.

[0013] It is to be understood that the terms "comprising," "including," "having," and variations thereof in the embodiments of the present disclosure are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the recited steps or units, but optionally includes further steps or units that are not recited, or optionally includes other steps or components inherent to such process, method, product, or apparatus.

[0014] The base 200 includes an upper housing 200a and a lower housing 200b, and the upper housing 200a is connected to the lower housing 200b. The seat body is attached to the upper housing 200a.

[0015] In one embodiment, an end of the support apparatus 100 is rotatably coupled to the base 200. As shown in Figures 1 and 2, when the support apparatus 100 is in an unfolded state relative to the base 200, the support apparatus 100 is disposed at an angle relative to the base 200. For example, the support apparatus 100 and the base 200 are perpendicular to each other, but the present disclosure is not limited thereto. When the support apparatus 100 is in a folded state relative to the base 200, the support apparatus 100 is received at the bottom side of the base 200, facilitating transportation and storage of the child safety seat.

[0016] In one embodiment, the support apparatus 100 is fixedly coupled to the base 200 .

[0017] In one embodiment, the support apparatus 100 is slidably coupled to the base 200. When the support apparatus 100 is in an unfolded state relative to the base 200, the support apparatus 100 slides out from the base 200. When the support apparatus 100 is in a folded state relative to the base 200, the support apparatus 100 slides into and is received within the base 200.

[0018] As shown in FIG. 3 to FIG. 6, the support device 100 includes a support leg body 10, a bottom leg 20, a trigger 30, and an alarm unit 40. As shown in FIG. 1 and FIG. 5, the support leg body 10 includes a first end 101 and a second end 102. The first end 101 is an upper end of the support leg body 10 and is connected to a component of a child safety seat, for example, a base 200 of the child safety seat. In a specific example, the first end 101 of the support leg body 10 is fixedly or rotatably connected to the base 200. The second end 102 is a lower end of the support leg body 10, and the bottom leg 20 is connected to the second end 102. When the support device 100 supports the floor of the vehicle, the bottom leg 20 contacts the floor of the vehicle. The trigger 30 is movably connected to the bottom leg 20 and is movable between a first position and a second position. In the first position, at least a part of the trigger 30 protrudes from the bottom leg 20, and in the second position, the trigger 30 is received in the receiving space S. The switch module 410 is configured to obtain a floor contact signal indicating that the trigger 30 is in the second position. The wireless module 420 is configured to perform signal communication with the switch module 410 and transmit the floor contact signal to the terminal. It should be understood that when the bottom leg 20 is separated from the ground, at least a part of the trigger 30 protrudes from the bottom leg 20 in the first position. When the support device 100 of the embodiment of the present disclosure receives a pressing force in the height direction, the trigger 30 moves from the first position to the second position relative to the bottom leg 20 under the pressing force. When the trigger 30 moves to the second position, the trigger 30 is received in the receiving space S, the bottom leg 20 contacts the floor surface of the vehicle, and the floor contact state of the bottom leg 20 is realized. The switch module 410 acquires a floor contact signal when the trigger 30 is in the second position, and the wireless module 420 transmits the floor contact signal to the terminal, thereby realizing real-time monitoring of the floor contact status of the bottom leg 20 and avoiding dangers caused by the loosening of the support device 100.

[0019] In the embodiments of the present disclosure, the height direction refers to the height direction of the support device in use.

[0020] Furthermore, because at least a portion of the trigger 30 protrudes from the bottom leg 20 in the first position, when the support apparatus 100 is in contact with the floor of the vehicle, the pressing force applied to the support apparatus 100 acts directly on the portion of the trigger 30 protruding from the bottom leg 20, forcing the trigger 30 to move from the first position to the second position until the switch module 410 is triggered to generate a floor contact signal. The more direct and flexible movement of the trigger 30 relative to the bottom leg 20 avoids the occurrence of a situation in which the trigger 30 gets stuck and the switch module 410 stops acquiring the floor contact signal, causing the terminal to be unable to accurately monitor the floor contact state of the support apparatus 100.

[0021] The switch module 410 is disposed within the support leg structure 10. In a specific example, the switch module 410 is disposed at the second end 102 of the support leg structure 10.

[0022] In one embodiment, the switch module 410 is provided at the first end 101 of the support leg body 10, or alternatively, the switch module 410 is provided at a position between the first end 101 and the second end 102 of the support leg body 10.

[0023] The term "signal communication" should be understood to mean a wired connection or wireless communication, whether by Wi-Fi, Bluetooth, or other means.

[0024] For example, they are used in mobile terminals, child safety seat displays, and in-vehicle displays.

[0025] The mobile terminal may be a mobile phone, a notebook computer, a pad, etc. If the terminal includes a mobile phone, the mobile phone communicates with the wireless module 420, and the user can monitor the floor contact state of the support apparatus 100 in real time through the mobile phone. During the vehicle's travel, it may be discovered that the support apparatus 100 is out of the vehicle's floor, and such a case is dealt with in time to avoid danger. If the terminal includes a display of the child safety seat, the display is provided at a position where the user can easily observe the display, such as on the support leg body 10, on the base 200, or on the seat body. Also, if the terminal includes an in-vehicle display, the in-vehicle display is disposed in the central control area of ​​the vehicle, and the user can monitor the floor contact state of the support apparatus 100 in real time while driving the vehicle.

[0026] As shown in Fig. 4, the trigger 30 is movably connected to the bottom leg 20. The trigger 30 is movable in the extension direction of the support leg body 10. That is, the movement direction of the trigger 30 relative to the bottom leg 20 is parallel to the height direction of the support leg body 10. When the trigger 30 is in the first position and receives a pressing force, the trigger 30 moves toward the second position along the height direction of the support leg body 10.

[0027] In some embodiments, the direction of movement of the trigger 30 relative to the bottom leg 20 is not parallel to the height direction of the support leg body 10, but may be at an angle between these two directions, for example.

[0028] The support leg body 10 includes a first leg tube 1 and a second leg tube 2. The first leg tube 1 and the second leg tube 2 are telescopically connected. A first end 101 is provided at an end of the first leg tube 1, and a second end 102 is provided at an end of the second leg tube 2 remote from the first leg tube 1. By telescopically connecting the first leg tube 1 and the second leg tube 2, the length of the support leg body 10 can be adjusted as needed to accommodate different vehicle models.

[0029] In one embodiment, the first ligament tube 1 is sleeved onto the second ligament tube 2. In another embodiment, the second ligament tube 2 is sleeved onto the first ligament tube 1.

[0030] As shown in FIG. 5 and FIG. 6, in one embodiment, the fixed member 110 is fixedly disposed inside the support leg body 10, and the switch module 410 is connected to the fixed member 110. The fixed member 110 is disposed to face the trigger 30 in the height direction of the support leg body 10. The fixed member 110 is fixedly connected to the bottom leg 20, and the fixed member 110 may also be fixedly connected to the inner wall surface of the second leg tube 2. For example, the fixed member 110 and the second leg tube 2 may be integrally configured, or may be connected by welding. The fixed member 110 is disposed at the second end 102 of the second leg tube 2.

[0031] In some embodiments, the support device 100 further includes a first elastic resilient member 50. One end of the first elastic resilient member 50 is arranged to abut against the trigger 30, and the other end is arranged to abut against the fixed member 110. The first elastic resilient member 50 is configured to apply an elastic force to the trigger 30 to drive the trigger 30 to move toward the first position. When the trigger 30 is not subjected to a pressing force, the trigger 30 is in the first position under the action of the first elastic resilient member 50, that is, at least a part of the trigger 30 protrudes from the bottom leg 20. When the trigger 30 is subjected to a pressing force, the trigger 30 moves from the first position to the second position, gradually pressing the first elastic resilient member 50, and the first elastic resilient member 50 is compressed. When the trigger 30 moves to the second position, the switch module 410 is triggered, the trigger 30 is received in the receiving space S, and the bottom leg 20 contacts the vehicle floor. When the support device 100 is folded, no pressing force acts on the trigger 30, and the trigger 30 moves from the second position to the first position due to the action of the first elastic restoring member 50, restoring the state in which at least a portion of the trigger 30 protrudes from the bottom leg 20.

[0032] In one embodiment, first resilient return member 50 is a spring, a resilient rubber member, or other member capable of restoring trigger 30 .

[0033] The switch module 410 includes a circuit board 411 and a switch 412 mechanically and electrically connected to the circuit board 411. The circuit board 411 is embedded in the fixing member 110 and is capable of communicating with the wireless module 420. The switch 412 includes a switch body 413 and a contact terminal 414 connected to the switch body 413. After a pressing force is applied to the trigger 30, the trigger 30 moves toward a second position to contact the contact terminal 414, thereby generating a floor contact signal. The floor contact signal is transmitted to the terminal via the wireless module 420, and the user can monitor the floor contact state of the support apparatus 100 in real time.

[0034] The fixed member 110 has an opening 111, and the trigger 30 is disposed to be movable through the opening 111. When the trigger 30 is in a first position, the trigger 30 is disposed to pass through the opening 111 of the fixed member 110, and the trigger 30 is not in contact with the switch 412. When the trigger 30 moves from the first position to the second position, the trigger 30 moves and passes through the opening 111 of the fixed member 110.

[0035] As shown in Fig. 5, the trigger 30 may include a base body 310, a trigger portion 320, and a contact floor portion 330. The base body 310 is disposed on a side of the bottom leg 20 facing the support leg body 10. The trigger portion 320 is attached to the side of the base body 310 facing the fixed member 110. The contact floor portion 330 is attached to another side of the base body 310 away from the fixed member 110, and the contact floor portion 330 is movably disposed to pass through the through hole 202 of the bottom leg 20. The through hole 202 is configured to pass through the bottom leg 20 and communicate with the receiving space S.

[0036] When the trigger 30 is in the first position, the base body 310 hits the bottom leg 20 under the elastic force of the first elastic restoring member 50, and a part of the contact floor surface portion 330 protrudes from the bottom leg 20. While the trigger 30 moves from the first position to the second position, the base body 310 presses the first elastic restoring member 50, and the trigger portion 320 moves in the opening 111 of the fixed member 110 and gradually approaches the switch 412. At the same time, the contact floor surface portion 330 retracts into the receiving space S along the through hole 202. When the trigger 30 moves to the second position, the trigger portion 320 triggers the switch 412 to generate a floor contact signal, and the contact floor surface portion 330 retracts into the receiving space S.

[0037] In one embodiment, the contact terminal 414 abuts against a side of the trigger portion 320 when the trigger 30 is in the second position.

[0038] 5 and 6, a guide hole 3101 is arranged on the base body 310 of the trigger 30. The guide post 60 is arranged between the fixed member 110 and the bottom leg 20. The arrangement of the guide post 60 and the guide hole 3101 guides the extension and contraction of the trigger 30 relative to the bottom leg 20, and prevents the movement direction of the trigger 30 relative to the bottom leg 20 from being tilted, thereby allowing the trigger 30 to accurately trigger the switch module 410.

[0039] In one embodiment, the guide post 60 extends along the height direction of the supporting leg body 10 and is arranged to be slidable through the guide hole 3101 of the base body 310.

[0040] In one embodiment, the number of guide posts 60 and the number of guide holes 3101 are both two, and the two guide posts 60 are disposed so as to pass through the two guide holes 3101, respectively. The trigger portion 320 of the trigger 30 is disposed between the two guide posts 60.

[0041] In some embodiments, the guide hole 3101 is disposed in the base body 310 of the trigger 30, one end of the guide post 60 is connected to the side of the bottom leg 20 facing the support leg body 10, and the other end of the guide post 60 is fixedly connected to the side of the fixed member 110 adjacent to the bottom leg 20. That is, the guide post 60 is fixedly disposed between the fixed member 110 and the bottom leg 20, thereby increasing the connection strength of the guide post 60 and allowing the trigger 30 to stably slide along the guide post 60 between the first position and the second position.

[0042] In some embodiments, the number of the first elastic resilient members 50 is two, and the two first elastic resilient members 50 are sleeved onto two guide posts 60 respectively.

[0043] In some embodiments, the trigger 30 has a projection, the inner wall of the second leg tube 2 has a guiding groove, and the projection is slidably disposed in the guiding groove. When the trigger 30 moves between the first position and the second position, the projection slides along the guiding groove, so that the trigger 30 can stably slide between the first position and the second position along the guiding groove.

[0044] In one embodiment, as shown in FIG. 5, the bottom leg 20 includes a base member 210 and a buffer member 220. The base member 210 is fixedly connected to the second end 102 of the support leg body 10, and the guide post 60 and the base member 210 are of an integral structure. The buffer member 220 is attached to the base member 210, and the buffer member 220 has a contact floor surface 201. When the trigger 30 is in the first position, at least a part of the trigger protrudes from the contact floor surface 201. By making the guide post 60 and the base member 210 of an integral structure, the connection strength between the guide post 60 and the base member 210 can be increased, and the movement direction of the trigger 30 is prevented from being affected by the inclination of the guide post 60 when the trigger 30 moves.

[0045] In some embodiments, trigger portion 320 of trigger 30 is movably disposed to pass through opening 111 of fixed member 110, which also functions as a guide. Accuracy of the movement direction of trigger 30 is ensured by the dual guide of guide post 60 and opening 111.

[0046] In some embodiments, the cushioning member 220 is made of a thermoplastic elastomer (TPE, also known as artificial or synthetic rubber). Thermoplastic elastomers have the advantages of both rubber and plastic. Specifically, TPE has high elasticity, can increase the frictional force to prevent the support device from slipping, and is low cost.

[0047] As shown in Figures 3 to 4 and Figures 6 to 7, the support device 100 of the embodiment of the present disclosure further includes a support member 70. The support member 70 is disposed on the support leg body 10 and connected to the support leg body 10. In some embodiments, the support member 70 is disposed on the first pedestal tube 1 and the second pedestal tube 2 and fixedly connected to the first pedestal tube 1. In some embodiments, the alarm unit 40 further includes a wire 430 disposed inside the support leg body 10 and connected to the support member 70. The wireless module 420 is disposed outside the support leg body 10 and connected to the switch module 410 via the wire 430. In some embodiments, the wireless module 420 is disposed on the base 200.

[0048] By connecting the wire 430 to the support member 70 , the wire 430 can be prevented from wrapping during extension or retraction of the second ligament tube 2 relative to the first ligament tube 1 .

[0049] In one embodiment, the support member 70 is a rod-like structure. One end of the rod-like structure is fixedly connected to the top of the first pedestal tube 1, and the other end of the rod-like structure extends towards the bottom leg 20. The rod-like structure is arranged to be hung on the top of the first pedestal tube 1.

[0050] In some embodiments, the support member 70 further includes a plurality of support parts. The plurality of support parts are arranged along the extension direction of the first pedestal tube 1 and the second pedestal tube 2, and each support part is connected to a wire 430. The support parts are arranged at equal intervals or at unequally spaced intervals.

[0051] 7 is a perspective view of a support device according to an embodiment of the present disclosure. As shown in FIG. 7, the support device 100 further includes a locking structure 80. The locking structure 80 is connected to the first pedestal tube 1 and to the second pedestal tube 2, and is configured to lock the first pedestal tube 1 and the second pedestal tube 2 together to maintain the target length of the support leg body 10.

[0052] FIG. 8 is an exploded schematic diagram of the locking structure. As shown in FIG. 8, the locking structure 80 includes a first engaging member 820 and a restoring member 850. The first engaging member 820 is rotatable with respect to the first leg tube 1. The second leg tube 2 is provided with a plurality of locking holes 131, and the plurality of locking holes 131 are arranged along the extension direction of the first leg tube 1 and the second leg tube 2. The restoring member 850 is connected between the first leg tube 1 and the first engaging member 820, and is configured to apply an elastic force to the first engaging member 820. This elastic force can drive the first engaging member 820 to enter the locking hole 131. As a specific example, the first engaging member 820 includes an engaging hook 822 configured to selectively extend into any of the locking holes 131. By extending the engagement hook 822 into different locking holes 131, the second leg tube 2 can be locked in different positions, thereby realizing adjustment of the length of the support leg body 10 and allowing the support device 100 to be adapted to different types of vehicles.

[0053] The engagement hook 822 has a guiding ramp 821. The guide ramp 821 is disposed to face the lock hole 131, and is gradually inclined toward the side closer to the second leg tube 2 along the extension direction of the second leg tube 2. When a user wants to lengthen the support leg body 10, the user can directly pull down the second leg tube 2. Since the engagement hook 822 is guided by the guide ramp 821 to disengage from the lock hole 131, the user can directly lengthen the support leg body 10 without pressing the first engagement member 820.

[0054] The lock structure 80 further includes a bracket 810, a fixed cover 830, and a first button 840. The bracket 810 is fixedly attached to the outer wall surface of the first leg tube 1, for example, the bracket 810 is welded to the first leg tube 1. The first engagement member 820 is rotatably connected to the bracket 810 by a rotating shaft 860. The fixed cover 830 is attached to the bracket 810 and covers the first engagement member 820 and the restoring member 850. The fixed cover 830 is provided with a window 831, and a part of the first engagement member 820 is exposed from the window 831 to the outer surface of the fixed cover 830. The first button 840 is connected to the first engagement member 820 through the window 831. When the support leg body 10 needs to be shortened, the user presses the first button 840, which rotates and drives the first engagement member 820 so that the engagement hook 822 disengages from the locking hole 131. When the target length is reached, the user releases the first button 840, and under the elastic force of the restoring member 850, the engagement hook 822 of the first engagement member 820 extends into one of the locking holes 131 to realize locking.

[0055] For example, the return member 850 may include, but is not limited to, a spring.

[0056] 9 to 13 are diagrams showing a schematic structure of the support device 100 according to some embodiments of the present disclosure. In this embodiment, the support device 100 is applied to a child safety seat. More specifically, referring to FIG. 9, the upper end of the support device 100 is rotatably connected to a rotating seat 200c arranged at the front end of the base of the child safety seat. Note that FIG. 9 does not show the seat part and main part of the base of the child safety seat, but shows only the rotating seat 200c arranged at the front end of the base and arranged to be connected to the support device 100. It should be understood that the support device 100 is configured to be applied to a child safety seat, but is not limited thereto, and can be applied to any suitable product.

[0057] 9 to 12, the support device 100 includes at least a first leg tube 1, a second leg tube 2, and a locking device 3. A plurality of first positioning holes 10' are arranged along the height direction on the side wall of the first leg tube 1, and the number of the first positioning holes 10' is two or more as shown. The second leg tube 2 is slidably sleeved in the first leg tube 1. A first end (lower end in the figure) of the second leg tube 2 is arranged outside the first leg tube 1 and has a bottom leg 21 for increasing the contact area between the support device 100 and the floor, thereby increasing the frictional force therebetween. A second end (upper end in the figure) of the second leg tube 2 is arranged inside the first leg tube 1. The locking device 3 is attached to the second leg tube 2 and has a second engagement member 31. The second engagement member 31 is configured to be in a locked position (FIG. 10) in which the second engagement member 31 extends into and engages with the corresponding first positioning hole 10', and the second engagement member 31 is configured to be in an unlocked position (not shown) in which the second engagement member 31 disengages from the first positioning hole 10'. It should be understood that when the length of the support device 100 needs to be adjusted, the second engagement member 31 is switched to the unlocked position, allowing the second leg tube 2 to slide freely relative to the first leg tube 1. When the length of the support device 100 is adjusted, when the second engagement member 31 is switched to the locked position, the second leg tube 2 cannot slide freely relative to the first leg tube 1, so that the support device 100 is locked and has an adjusted length. In this embodiment, the first leg tube 1, the second leg tube 2, and the second engagement member 31 are each made of, for example, a metal material. In other embodiments, the first pedestal tube 1, the second pedestal tube 2, and the second engagement member 31 are each made of other suitable materials.

[0058] In the embodiment of the present disclosure, the height direction refers to the height direction of the support device 100 during use. Referring to Figs. 9 to 11 and 13, in this embodiment, the upper end of the first leg tube 1 and the rotating sheet 200c are rotatably connected. The second end of the second leg tube 2 extends from the lower end of the first leg tube 1 to the inside of the first leg tube 1, and the second engagement member 31 is also disposed inside the first leg tube 1. A rod-shaped adjustment member 11 is further provided on the inner side wall of the side wall main body of the first leg tube 1, and the first positioning hole 10' is disposed in the rod-shaped adjustment member 11. The rod-shaped adjustment member 11 is fixed to the inner side wall of the side wall main body of the first leg tube 1 by any appropriate means. For example, in this embodiment, the length of the rod-shaped adjustment member 11 is substantially equal to the length of the first leg tube 1. The stoppers 15 are attached to the two ends of the first leg tube 1, respectively. The two ends of the rod-shaped adjustment member 11 are respectively connected to stoppers 15. In some alternative embodiments, the rod-shaped adjustment member 11 is directly connected to the sidewall body of the first leg tube 1, for example by a fastener. In this embodiment, the first positioning hole 10' is disposed on the rod-shaped adjustment member 11, and the sidewall body of the first leg tube 1 shields the first positioning hole 10' from the outside, so that foreign matter can be prevented from entering the first leg tube 1 through the first positioning hole 10'.

[0059] 13, in this embodiment, the rod-shaped adjustment member 11 is made of a metal material, and at least a part of the rod-shaped adjustment member 11 is covered with a third cushion layer 13, which is fixed to the rod-shaped adjustment member 11 by cover molding, adhesion, or the like. For example, when the second engagement member 31 collides with the first leg tube 1 when the second leg tube 2 slides, the second engagement member 31 comes into direct contact with the third cushion layer 13. The third cushion layer 13, as a buffer member, can effectively reduce noise generated by the collision between the second engagement member 31 and the first leg tube 1 when the length of the support device 100 is adjusted.

[0060] The third cushion layer 13 may be any material layer capable of cushioning the impact and reducing noise, for example, a plastic clad layer, a plastic-steel clad layer, or a nylon clad layer. The third cushion layer 13 at least covers the area corresponding to the moving trajectory of the second engaging member 31 and where the plurality of first positioning holes 10' are arranged. During the sliding of the second leg tube 2, the engaging portion of the second engaging member 31 configured to extend into the first positioning hole 10' (in some embodiments below, the second end 312 of the second engaging member 31 is referred to as a specific example) collides with the first leg tube 1 relatively frequently, and the moving trajectory of the engaging portion corresponds to the area where the plurality of first positioning holes 10' are arranged. Therefore, in some embodiments, the third cushion layer 13 is arranged only in the area where the rod-shaped adjustment member 11 collides with the second engaging member 31 relatively frequently, and the noise reduction effect can be obtained at a low cost. 13, the third cushion layer 13 is disposed in an area of, for example, length L and width W, and surrounds the plurality of first positioning holes 10', thereby ensuring the stability of the attachment between the third cushion layer 13 and the rod-shaped adjustment member 11. In some embodiments, the third cushion layer 13 covers the entire rod-shaped adjustment member 11. In other embodiments, the rod-shaped adjustment member 11 is directly made of a cushioning material, including but not limited to plastic, nylon, plastic-steel, etc., while ensuring the structural strength of the rod-shaped adjustment member 11.

[0061] 10 and 13, in one embodiment, the first positioning hole 10' Each of them is made up of an abutted wall 101' and a bottom wall 102 on the opposite side of the abutted wall 101'. When the second engagement member 31 is in the lock position, the second engagement member 31 In order to lock the position of the second leg tube 2 relative to the first leg tube 1, the abutment wall 101' can be abutted against the second engaging member 31 to obtain the desired length of the support device 100. Compared to the other parts of the rod-shaped adjustment member 11, the abutment wall 101' acts as the second engaging member. It should be understood that the second leg tube 2 is subjected to a larger stress by the engaging member 31. This is to ensure the engagement strength between the second engaging member 31 provided on the second leg tube 2 and the first positioning hole 10' of the rod-shaped adjustment member 11, and to prevent the lock of the second leg tube 2 to the first leg tube 1 from loosening when the support device 100 is pressed by the seat and the base body of the child safety seat and receives a reaction force from the vehicle interior floor. In addition, the abutment wall 101' is not covered with the third cushion layer 13. In this case, it is possible to avoid a situation in which the third cushion layer 13 in the abutment wall 101' is broken by stress, which affects the attachment stability between the third cushion layer 13 and the rod-shaped adjustment member 11.

[0062] In this embodiment, the second engagement member 31 is switched between a locked position and an unlocked position in a rotational manner. Referring to Fig. 10 and Fig. 12, in one embodiment, a positioning member 22 is attached to the second end of the second leg tube 2. A first end 311 of the second engagement member 31 is rotatably connected to the positioning member 22 via a first shaft 51, and a second end 312 of the second engagement member 31 (i.e., the above-mentioned engagement portion) is configured to engage or disengage with a corresponding first positioning hole 10'. In the case of the support device 100 applied to the child safety seat of some embodiments, the second end 312 of the second engagement member 31 is in the form of a locking tongue. The second end 312 has a horizontal surface area 3121 for abutting against the abutment wall 101' of the first positioning hole 10' (i.e., the upper wall of the first positioning hole 10' in FIG. 10), and has an inclined surface area 3122 facing away from the abutment wall 101'. The inclined surface area 3122 allows the second leg tube 2 to be pulled outward from the first leg tube 1 when the locking device 3 does not need to be locked. The second engagement member 31 is configured to prevent the second leg tube 2 from being pulled into the first leg tube 1, but not to prevent the second leg tube 2 from being extended outward from the first leg tube 1. That is, the second leg tube 2 is locked in one direction by the second engagement member 31.

[0063] Referring again to FIG. 10, when the second engagement member 31 is in the lock position, the horizontal surface area 3121 of the second engagement member 31 contacts the third cushion layer 13 of the first positioning hole 10′. 10, the second engaging portion 102 abuts against the abutment wall 101', more specifically, the second engaging portion 102 abuts against the abutment wall 101'. The inclined surface area 3122 of the joint member 31 faces the bottom wall 102' of the first positioning hole 10'. The third cushion layer 13 includes a bottom wall 102' and a rod-like member extending downward from the bottom wall 102'. The third cushion layer 13 covers the bottom wall 102' and the inner sidewall 103 of the joint member 11. Here, the inner sidewall 103 corresponds to the moving trajectory of the second end 312 of the second engagement member 31. It should be understood that when the second engagement member 31 rotates to the locking position, the inclined surface area 3122 is likely to collide with the interface between the bottom wall 102' and the inner sidewall 103. Also, when the second leg tube 2 protrudes outward from the first leg tube 1, the second engagement member 31 rotates to the unlocking position, and the inclined surface area 3122 slides along the interface between the bottom wall 102' and the inner sidewall 103, and slides along the inner sidewall 103. In this embodiment, the third cushion layer 13 covers the bottom wall 102' and the inner sidewall 103. When the second leg tube 2 is pulled outward from the first leg tube 1, the inclined surface area 3122 of the second engagement member 31 contacts the bottom wall 102' and the inner side wall 103 of the rod-shaped adjustment member 11 through the third cushion layer 13. The third cushion layer 13 can effectively cushion the collision and relative sliding between the area including the inclined surface area 3122 of the second engagement member 31 and the transition surface between the inclined surface area 3122 and the horizontal surface area 3121, and the rod-shaped adjustment member 11, thereby reducing noise including collision sounds and friction sounds generated during the length adjustment of the support device 100.

[0064] Referring to FIG. 13, the first positioning hole 10' is formed in the top wall (i.e., the abutment wall 101' ), a bottom wall 102', and two side walls 104. In the above embodiment, the third cup The insulation layer 13 covers the top wall (i.e., the abutment wall 101') of the first positioning hole 10'. The first positioning hole 10′ is not covered by the first positioning hole 10′, but covers the bottom wall 102′ of the first positioning hole 10′. The third cushion layer 13 further covers the two side walls 104 of the first positioning hole 10'. In some embodiments, the third cushioning layer 13 also covers the abutment wall 101'.

[0065] In the state of the locking device 3, the second engagement member 31 is held at the locking position. There are many embodiments of the locking device 3, and several embodiments of the locking device 3 are exemplified below.

[0066] 10 to 12, in an embodiment, the locking device 3 further includes an operating button 32, a traction member 33, and a second elastic restoring member 35. The operating button 32 is attached to the bottom leg 21. The traction member 33 and the second elastic restoring member 35 are disposed inside the second leg tube 2. When a pressing force is applied to the operating button 32 in the initial position, the pressed operating button 32 drives the second engagement member 31 by the traction member 33, and the second engagement member 31 is rotationally driven around the first shaft 51 from the lock position to the unlock position. When the pressing force applied to the operating button 32 is removed, the second elastic restoring member 35 directly or indirectly drives the second engagement member 31 to rotate around the first shaft 51 from the unlock position to the lock position, and the operating button 32 is accordingly restored to the initial position.

[0067] Referring to FIG. 12, in an embodiment, the traction member 33 may be a rod-shaped member and is adapted to move up and down in the height direction of the second leg tube 2. The movement direction of the operation button 32 is perpendicular to the height direction of the second leg tube 2, and the first end of the operation button 32 (the lower end in the figure) abuts against the second inclined surface 337 of the first end of the traction member 33 via the first inclined surface 321. When the operation button 32 is pressed, the pressing of the operation button 32 is converted into a downward movement of the traction member 33 under the action of the first inclined surface 321 and the second inclined surface 337, thereby driving the second engagement member 31 to rotate toward the unlocked position. The second elastic return member 35 may be one or more springs for applying an upward elastic force to the traction member 33. When the pressing force applied to the operation button 32 is removed, the second elastic restoring member 35 drives the towing member 33 to move upward, thereby driving the second engagement member 31 to rotate toward the locking position. At the same time, under the action of the first inclined surface 321 and the second inclined surface 337, the upward movement of the towing member 33 is converted into a restoring movement of the operation button 32. It should be understood that in the embodiment, the operation button 32 biases against the towing member 33 via the first inclined surface 321 and the second inclined surface 337 cooperating with each other, but in other embodiments, only one of the operation button 32 and the towing member 33 is provided with an inclined surface for biasing against the other. Furthermore, in some embodiments, a spring for restoring the operation button 32 may be further disposed in the operation button 32.

[0068] 11 and 12, in this embodiment, an example for guiding the vertical movement of the pulling member 33 is shown. Specifically, a first long hole 331 extending in the height direction of the pulling member 33 is arranged at the second end (upper end in the figure) of the pulling member 33. The first shaft 51 slidably engages with the first long hole 331, and the first shaft 51 penetrates the second circular hole 38 of the second engagement member 31. A third long hole 333 extending in the height direction of the pulling member 33 is arranged at the first end (lower end in the figure) of the pulling member 33, and a third shaft 53 slidably engaged with the third long hole 333 is arranged in the third long hole 333, and the third shaft 53 is attached to the first circular hole 25 of the second leg tube 2. Of course, the manner of axial movement of the pulling member 33 is not limited to the above example.

[0069] 11, in this embodiment, an example of a traction member 33 for rotationally driving the second engagement member 31 is shown. A second elongated hole 332 extending obliquely is provided at a second end of the traction member 33, and the second elongated hole 332 is located above the first elongated hole 331. A second positioning hole 313 is provided in the second engagement member 31, and the second positioning hole 313 is located above the second circular hole 38. The second shaft 52 is attached to the second elongated hole 332 and the second positioning hole 313. When the position of the second leg tube 2 needs to be adjusted, the operation button 32 is pressed to drive the towing member 33 to move downward, and the second shaft 52 slides relatively to the second long hole 332, so that the second engaging member 31 rotates around the first shaft 51 from the locked position to the unlocked position, and the second end 312 of the second engaging member 31 is disengaged from the first positioning hole 10', so that the second leg tube 2 slides freely. When the second leg tube 2 slides to an appropriate position, the pressing force applied to the operation button 32 is removed, and the second elastic restoring member 35 drives the towing member 33 to move upward, and the second shaft 52 slides relatively to the second long hole 332, so that the second engaging member 31 rotates around the first shaft 51 from the unlocked position to the locked position. Then, the second end 312 of the second engagement member 31 again extends into and engages with the first positioning hole 10', thereby preventing the second pedestal tube 2 from retracting into the first pedestal tube 1 and ensuring the supported height of the support device 2. It should be understood that in some alternative embodiments, the location of the second slot 332 on the towing member 33 and the location of the second positioning hole 313 on the second engagement member 31 may be interchanged.

[0070] It should be understood that the locking device 3 configured to realize the switching between the locked position and the unlocked position of the second engagement member 31 by rotation is not limited to the above example. For example, in some alternative embodiments, the traction member 33 may include a flexible cable connected to the second engagement member 31. The flexible cable may be driven by the operation button 32 to traction the second engagement member 31 to rotate to the unlocked position, and the second elastic return member 35 may be a torsion spring that drives the second engagement member 31 to rotate to the locked position.

[0071] FIG. 14 is a schematic perspective view of a first pedestal tube 1 of a support device 100 according to some embodiments of the present disclosure. In the embodiment of FIG. 14, the first locating hole 10′ is This embodiment differs from the above embodiment in that the first positioning holes 10′ may be formed directly in the sidewall of the first pedestal tube 1. More specifically, the first positioning holes 10′ are formed by passing through the sidewall of the first pedestal tube 1. The first leg tube 1 may be made of, for example, a metal. At least a part of the inner side wall of the side wall body of the first leg tube 1 is covered with a second cushion layer. The second cushion layer may be fixed to the inner side wall of the first leg tube 1 by cover molding, adhesion, or other means. When the second engagement member 31 collides with the inner side wall of the first leg tube 1 during sliding of the second leg tube 2, the second engagement member 31 directly contacts the second cushion layer. The second cushion layer, as a buffer member, can effectively reduce noise generated by the collision between the second engagement member 31 and the inner side wall of the first leg tube 1 during the length adjustment of the support device 100. The second cushion layer may be any material layer that can cushion the collision and reduce noise, for example, a plastic clad layer, a plastic-steel clad layer, or a nylon clad layer.

[0072] 9 to 13, in the embodiment of FIG. 14, the second cushion layer at least corresponds to the movement trajectory of the second engagement member 31 and covers the area in which the multiple first positioning holes 10' are arranged. The second cushion layer is provided in an area of ​​the side wall of the pedestal tube 1 against which the second end 312 of the second engagement member 31 is likely to collide and slide. The second cushion layer, for example, surrounds the plurality of first positioning holes 10′ therein.

[0073] Referring to the description of the above-mentioned embodiment, in the embodiment of FIG. 14, the second end 312 of the second engaging member 31 is in the form of a locking tongue, and is fitted to the upper wall (i.e., the upper wall) of the first positioning hole 10′. That is, each of the abutment walls 101') is a second leg tube 1 for a first leg tube 1. The second engaging member 31 is configured to abut against the horizontal surface area 3121 of the second engaging member 31 so as to lock the position of the tube 2. The abutted wall 101' may not be covered with the second cushion layer. Also, of each first positioning hole 10', the bottom wall 102' facing the abutment wall 101' and the inner side wall (not numbered) of the side wall body of the first leg tube 1 extending downward from the bottom wall 102' may be covered with the second cushion layer. When the second leg tube 2 is pulled outward from the first leg tube 1, the inclined surface area 3122 of the second engaging member 31 abuts against the bottom wall 102' and abuts against the inner side wall of the side wall body of the first leg tube 1 by the second cushion layer 13. The second cushion layer can effectively cushion the collision and relative sliding between the area including the inclined surface area 3122 of the second engagement member 31 and the transition surface between the inclined surface area 3122 and the horizontal surface area 3121 and the inner side wall of the first leg tube 1, thereby reducing the noise of the support device 100 during the length adjustment. In an embodiment, the second cushion layer can also cover the two side walls 104 of each of the first positioning holes 10'. However, in some embodiments, the second cushion layer may also cover the abutment wall 101 of each of the first positioning holes 10'.

[0074] The present disclosure also provides an embodiment (not shown) of the support device 100. Based on the above-mentioned embodiment, in this embodiment, the first cushion layer may cover the second engagement member 31 made of metal. The first cushion layer may be fixed on the second engagement member 31 by cover molding, adhesion, or other means. In the embodiment, the first cushion layer may completely cover or partially cover the second engagement member 31. When the second engagement member 31 collides with the first leg tube 1 during sliding of the second leg tube 2, the second engagement member 31 contacts the third cushion layer 13 of the rod-shaped adjustment member 11 or the second cushion layer of the first leg tube 1 through the first cushion layer. The first cushion layer, together with other cushion layers, can act as a buffer member to cushion the collision and reduce the collision sound and friction sound. The first cushion layer may be any material layer that can cushion the collision and reduce the noise, for example, a plastic clad layer, a plastic-steel clad layer, a nylon clad layer, etc.

[0075] In the embodiment, the first cushion layer is in contact with the abutment wall 101' of the first positioning hole 10' of the second engaging member 31 to prevent the first cushion layer from being broken after being subjected to stress and not affect the attachment stability between the first cushion layer and the second engaging member 31. The portion may not be covered by the first cushioning layer.

[0076] In some alternative embodiments, while ensuring the structural strength of the second engagement member 31, the second engagement member 31 may be made directly from a cushioning material including, but not limited to, plastic, nylon, plastic-steel, and the like.

[0077] It should be understood that in some alternative embodiments, if the second engagement member 31 has a first cushion layer or is made from a cushioning material, the collision noise and friction noise between the second engagement member 31 and the first leg tube 1 can be reduced even if no cushion layer is disposed on the inner side wall of the rod-shaped adjustment member 11 or the first leg tube 1.

[0078] It should be understood that the second engagement member 31 in the above embodiment of the present disclosure is switched between the locked position and the unlocked position in a rotating manner, but in other embodiments, the second engagement member 31 (e.g., a latch) may be switched between the locked position and the unlocked position in a linear movement manner. A locking device for realizing the linear movement of the second engagement member 31 is known in the prior art and will not be described here. It should be understood that the buffer member described in the embodiment of the present disclosure may be disposed on the inner side wall of the first leg tube 1 and / or the second engagement member 31, and regardless of the manner in which the second engagement member 31 is switched between the locked position and the unlocked position, the buffer member reduces the collision and friction noise generated by the second engagement member 31 and the first leg tube 1 during the sliding of the second leg tube 2.

[0079] The embodiment of the present disclosure also provides a child safety seat. The front end of the base of the child safety seat is attached to the support device provided in any of the previous embodiments. In the embodiment, the first leg tube 1 may be connected to the pivot seat 200c at the front end of the base as described above.

[0080] The embodiment of the present disclosure provides a child safety seat and its supporting device, which can obtain the floor contact state of the supporting device accurately in time, and allows a user to monitor the position change of the supporting device in real time, thereby effectively improving the safety of the safety seat.

[0081] The support device provided by the embodiment of the present disclosure can improve the problem of noise of the support device during length adjustment in the prior art.

[0082] In one aspect, an embodiment of the present disclosure provides a support device applied to a child safety seat. The support device includes a support leg body, a bottom leg, a trigger, and an alarm unit. The bottom leg is connected to a lower end of the support leg body, and the bottom leg and the support leg body form a receiving space. The trigger is movably coupled to the bottom leg. The trigger is movable between a first position and a second position. In the first position, at least a portion of the trigger protrudes from the bottom leg, and in the second position, the trigger is received in the receiving space. The alarm unit includes a switch module and a wireless module. The switch module is configured to obtain a floor contact signal indicating that the trigger is in the second position, and the wireless module is in signal communication with the switch module.

[0083] According to some embodiments of the present disclosure, the trigger is movably coupled to the bottom leg, such that the trigger is movable heightwise of the support leg body.

[0084] According to some embodiments of the present disclosure, a fixed member is fixedly disposed inside the support leg body, and the switch module is connected to the fixed member. The fixed member is disposed opposite the trigger in a height direction of the support leg body.

[0085] According to some embodiments of the present disclosure, the support apparatus further includes a first elastic return member.

[0086] An end of the first elastic member is disposed to abut against the trigger, and another end of the first elastic member is disposed to abut against the fixed member, and the first elastic member is configured to apply an elastic force to the trigger to drive the trigger to move toward the first position.

[0087] According to some embodiments of the present disclosure, the stationary member has an opening and the trigger is movably disposed to pass through the opening.

[0088] According to some embodiments of the present disclosure, the bottom leg includes:

[0089] A foundation member connected to the supporting leg structure.

[0090] and a buffer member attached to the base member and having a contact floor surface, wherein at least a portion of the trigger protrudes from the contact floor surface when the trigger is in the first position.

[0091] According to some embodiments of the present disclosure, the support leg body includes a first leg tube and a second leg tube, the first leg tube and the second leg tube being telescopically connected.

[0092] The support apparatus further includes a support member disposed within the first ligament tube and the second ligament tube and fixedly coupled to the first ligament tube.

[0093] According to some embodiments of the present disclosure, the alarm unit further includes a wire, and the wireless module is connected to the switch module via the wire, the wire being disposed inside the support leg body and connected to the support member.

[0094] According to some embodiments of the present disclosure, a switch module includes a circuit board and a switch.

[0095] The circuit board is embedded in the fixed member and communicates with the wireless module.

[0096] The switch is mechanically and electrically connected to the circuit board and includes a switch body and a contact terminal connected to the switch body.

[0097] According to some embodiments of the present disclosure, the trigger includes:

[0098] A base body arranged on the side opposite the support leg body of the bottom leg.

[0099] a trigger part attached to a side of the base body facing the fixed member and configured to urge the contact terminal against the side of the trigger part when the trigger is in the second position;

[0100] and a contact floor surface portion attached to a side of the base body away from the fixed member and movably arranged to pass through the through hole of the bottom leg.

[0101] According to some embodiments of the present disclosure, a guide hole is disposed in the base body.

[0102] A guide post is disposed between the fixed member and the bottom leg, the guide post extending along the height direction of the supporting leg body, and the guide post is disposed slidably so as to pass through the guide hole.

[0103] According to some embodiments of the present disclosure, an end of the guide post is connected to a side of the bottom leg that faces the support leg body, and another end of the guide post is fixedly connected to a side of the fixing member adjacent the bottom leg.

[0104] According to some embodiments of the present disclosure, the bottom leg includes a base member and a cushioning member.

[0105] The base member is connected to the supporting leg structure.

[0106] The cushioning member is attached to the base member and has a contact floor surface.

[0107] When the trigger is in the first position, at least a portion of the trigger protrudes from the contact floor surface.

[0108] The guide post and the base member are of integral construction.

[0109] According to some embodiments of the present disclosure, the inner wall of the second pedestal tube is provided with a guide groove.

[0110] The trigger is provided with a protrusion, which is slidably disposed within the guide groove.

[0111] According to some embodiments of the present disclosure, the support leg body includes a first leg tube and a second leg tube, the first leg tube and the second leg tube being telescopically connected.

[0112] The second leg tube is provided with a plurality of lock holes arranged along the extension and retraction direction of the first leg tube and the second leg tube.

[0113] The support apparatus further comprises a locking structure connected to the first pedestal tube and the second pedestal tube and including a first engaging member and a restoring member.

[0114] The first engagement member is rotatably disposed relative to the first pedestal tube.

[0115] The restoring member is coupled between the first pedestal tube and the first engaging member and is configured to provide a resilient force such that the first engaging member extends into one of the plurality of locking holes.

[0116] According to some embodiments of the present disclosure, the first engagement member includes an engagement hook configured to selectively extend into any one of the plurality of locking holes.

[0117] The engagement hook has a guide lamp, which is arranged to face one of the multiple lock holes and gradually inclines toward the side closer to the second leg tube along the extension direction of the second leg tube.

[0118] According to some embodiments of the present disclosure, the locking structure further includes a bracket, a fixed cover, and a first button.

[0119] The bracket is fixedly connected to the first leg tube, and the first engagement member is rotatably connected to the bracket by a pivot.

[0120] The fixed cover is connected to the bracket and configured to cover the first engagement member and the restoring member, The fixed cover is provided with a window through which a portion of the first engagement member is exposed to an outer surface of the fixed cover.

[0121] The first button is connected to the first engagement member through the window.

[0122] In another aspect, an embodiment of the present disclosure provides a support device including: a first pedestal tube, the first pedestal tube having a plurality of first positioning holes in a height direction of the first pedestal tube; a second pedestal tube slidably sleeved within the first pedestal tube; a locking device attached to the second pedestal tube and having a second engagement member, the second engagement member configured to move between a locked position and an unlocked position, the second engagement member engaging with the corresponding positioning holes in the locked position and the second engagement member disengaging from the corresponding positioning holes in the unlocked position; and a buffer member provided on at least one of an inner sidewall of the first pedestal tube and the second engagement member for buffering a collision between the second engagement member and the first pedestal tube during sliding of the second pedestal tube.

[0123] In one embodiment, the cushioning member includes a first cushioning layer covering the second engagement member, or the second engagement member is made from a cushioning material to form the cushioning member.

[0124] In one embodiment, the plurality of first positioning holes are formed in the sidewall body of the first pedestal tube. The cushioning member includes a second cushion layer covering a partial area of ​​the inner sidewall of the sidewall body of the first pedestal tube. The partial area corresponds to a moving trajectory of the second engagement member and constitutes an area in which the plurality of first positioning holes are arranged.

[0125] In one embodiment, the first pedestal tube is made of metal and each of the plurality of first locating holes has an abutted wall that is not covered by the second cushion layer and is configured to abut against the second engagement member.

[0126] In one embodiment, each of the plurality of first positioning holes includes a generally opposed bottom wall, and the second engagement member includes an engagement portion configured to extend into the corresponding first positioning hole, the engagement portion having a shape of a locking tongue, and the engagement portion includes a horizontal surface region and a sloped surface region. When the second engagement member is in the locked position, the horizontal surface region abuts against the abutment wall and the sloped surface region faces the bottom wall. When the second pedestal tube is pulled outwardly from the first pedestal tube, the sloped surface region contacts the bottom wall and the inner sidewall of the first pedestal tube through the second cushion layer.

[0127] In an embodiment, a rod-shaped adjustment member is provided on the inner side wall of the side wall body of the first leg tube, and the multiple first positioning holes are arranged on the rod-shaped adjustment member. The buffer member includes a third cushion layer covering a partial region of the rod-shaped adjustment member, the partial region corresponding to the movement trajectory of the second engagement member and having a region where the multiple first positioning holes are arranged.

[0128] In one embodiment, the rod-shaped adjustment member is made of metal, and each of the plurality of first positioning holes includes an abutment wall that is not covered by the second cushion layer and is configured to abut against the second engagement member to lock the position of the second leg tube.

[0129] In one embodiment, each of the plurality of first positioning holes includes a generally opposing bottom wall, and the second engagement member includes an engagement portion configured to extend into the corresponding first positioning hole, the engagement portion having a shape of a locking tongue, and the engagement portion includes a horizontal surface region and an inclined surface region. When the second engagement member is in the locking position, the horizontal surface region abuts against the abutment wall and the inclined surface region faces the bottom wall. When the second pedestal tube is pulled outward from the first pedestal tube, the inclined surface region contacts the bottom wall and the inner side wall of the rod-shaped adjustment member via the third cushion layer.

[0130] In one embodiment, the rod-shaped adjustment member is made of a dampening material to form the dampening member.

[0131] In one embodiment, the second engagement member is switched between the locked and unlocked positions by rotation or linear movement.

[0132] In one embodiment, a first end of the second pedestal tube is disposed outside the first pedestal tube and a second end of the second pedestal tube is disposed inside the first pedestal tube, comprising a positioning member, a first end of the second engagement member rotatably coupled to the positioning member via a first shaft, and a second end of the second engagement member configured to engage and disengage with a corresponding first positioning hole.

[0133] In one embodiment, the first end of the second leg tube comprises a bottom leg. The locking device further includes an operating button attached to the bottom leg, a towing member, and a second elastic restoring member. The locking device is disposed on the bottom leg, and the towing member and the second elastic restoring member are disposed inside the second leg tube. The operating button is disposed to drive the second engagement member to rotate from the locked position to the unlocked position via the towing member. The second elastic restoring member is configured to drive the second engagement member to rotate from the unlocked position to the locked position.

[0134] In one embodiment, the towing member is a rod-shaped member. The operation button abuts against the first end of the towing member via a first inclined surface. A first long hole extending in the height direction of the towing member is disposed in the second end of the towing member, and the first shaft slidably engages with the first long hole. One of the second ends of the towing member and the second engagement member is provided with a second long hole extending obliquely, and the other is provided with a second positioning hole. The second shaft is disposed in the second long hole and the second positioning hole.

[0135] In yet another aspect, an embodiment of the present disclosure provides a child safety seat, the front end of the base of the child safety seat comprises the above-mentioned support device, and the first leg tube of the support device is connected to the front end of the base.

[0136] According to some embodiments of the present disclosure, the wireless module of the support apparatus is disposed on the base.

[0137] The above-described embodiments of the present disclosure have at least the following advantages or beneficial effects.

[0138] In the child safety seat according to the embodiment of the present disclosure, when the support device receives a pressing force in the height direction, at least a part of the trigger protrudes from the bottom leg at the first position, so that the trigger moves from the first position to the second position relative to the bottom leg under the pressing force. When the trigger moves to the second position, the trigger is received by the receiving space, and the bottom leg contacts the floor surface of the vehicle. Meanwhile, the switch module obtains a floor contact signal when the trigger is in the second position, and the wireless module in signal communication with the switch module transmits the floor contact signal to the terminal, thereby realizing real-time monitoring of the floor contact state of the support device and avoiding dangers caused by the loosening of the support device.

[0139] Furthermore, since at least a part of the trigger protrudes from the bottom leg in the first position, when the support device is in contact with the floor of the vehicle, a pressing force applied to the support device acts directly on the part of the trigger protruding from the bottom leg, forcing the trigger to move from the first position to the second position until the switch module is triggered to generate a floor contact signal. Since the trigger moves more directly and flexibly relative to the bottom leg, it is possible to avoid a situation in which the trigger gets stuck, the switch module cannot obtain a floor contact signal, and the terminal cannot accurately monitor the floor contact state of the support device.

[0140] Furthermore, the support device provided by the present disclosure uses a buffer member to buffer the collision between the second engagement member and the first leg tube during the sliding of the second leg tube, so that the noise caused by the collision can be effectively reduced, thereby improving the consumer's experience of use. When the support device is applied to a child safety seat, the adverse effects on children caused by the collision sound generated by the support device during length adjustment can be reduced.

[0141] It should be understood that the various embodiments / implementations provided by the present disclosure can be combined with each other unless a contradiction occurs, and will not be described one by one in this specification.

[0142] In the embodiments of the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" refers to two or more unless expressly defined otherwise. Terms such as "dispose", "connect", "attach", and "fix" should be understood in a broad sense. For example, "attach" means to join to another to form a fixed attachment, a removable attachment, or an integral attachment, and "connect" means to connect directly or indirectly through an intermediate medium. The specific meaning of the above terms in the embodiments of the present disclosure should be understood by those skilled in the art based on the specific circumstances.

[0143] In describing the embodiments of the present disclosure, the terms "upper," "lower," "left," "right," "front," "rear," and the like indicate an orientation or positional relationship based on an orientation or positional relationship shown in the drawings, are used solely for the convenience of describing and simplifying the description of the embodiments of the present disclosure, and do not indicate or imply that the referenced devices or units must have a particular orientation or be configured and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present disclosure.

[0144] In the description of the present disclosure, the recitation of terms such as "one embodiment," "some embodiments," "particular embodiment," and the like means that the particular feature, structure, material, or characteristic described in combination with an embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described herein may be combined in any suitable manner in any one or more embodiments or examples.

[0145] The above are some embodiments of the present disclosure, but are not intended to limit the embodiments of the present disclosure. Those skilled in the art can make various modifications and changes to the embodiments of the present disclosure. Modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the embodiments of the present disclosure shall be included in the protection scope of the embodiments of the present disclosure. [Explanation of symbols]

[0146] 200 base 200a Upper Housing 200b Lower Housing 100 Support device 10 Support script font 101 first end 102 Second end 110 Fixing member 111 Opening 1 First leg tube 2 Second leg tube 131 Lock hole 20 bottom leg 201 Contact floor surface 202 Through hole 210 Foundation members 220 Cushioning material 30 Trigger 310 Base Body 3101 Guide hole 320 Trigger section 330 Contact floor part 40 Alarm Unit 410 Switch Module 411 Circuit Board 412 Switch 413 Switch body 414 Contact terminal 420 Wireless Module 430 Wire 50 First elastic restoring member 60 Guide Post 70 Support member 80 Locking Structure 810 Bracket 820 First engagement member 821 Guide Lamp 822 Engagement hook 830 Fixed cover 831 Window 840 First Button 850 Restoration Materials 860 Rotation axis S Receptive space 101' Abutment wall 102' Bottom Wall 103 Inner side wall 104 Side wall 10' First positioning hole 11 Adjustment member 13 The third cushion layer 15 Stopper 200c pivoting seat 2 Second leg tube 21 bottom leg 22 Positioning member 25 First hole 3 Locking device 31 second engaging member 311 First end 312 Second End 313 Second positioning hole 3121 Horizontal area 3122 Slope area 32 Operation buttons 321 First Inclined Surface 33 Traction member 35 Second elastic restoring member 38 Second hole 331 First long hole 332 Second slot 333 Third slot 337 Second Inclined Plane 51 First Shaft 52 Second Shaft 53 The Third Shaft

Claims

1. A support device for a child safety seat, comprising: A supporting leg body; a bottom leg connected to a lower end of the support leg body, the bottom leg and the support leg body forming a receiving space; a trigger movably coupled to the bottom leg, the trigger being movable between a first position and a second position, in the first position at least a portion of the trigger protruding from the bottom leg and in the second position the trigger being received within the receiving space; A support apparatus comprising: an alarm unit comprising a switch module and a wireless module, the switch module configured to obtain a floor contact signal indicating that the trigger is in the second position, the wireless module in signal communication with the switch module.

2. 2. The support apparatus of claim 1, wherein the trigger is movably coupled to the bottom leg, the trigger being movable heightwise along the support leg body.

3. A fixing member is fixedly disposed inside the supporting leg body, the switch module is connected to the fixed member; and The support device according to claim 1 or 2, wherein the fixing member is disposed so as to face the trigger in a height direction of the support leg body.

4. The support device further comprises a first elastic return member; An end of the first elastic resilient member is disposed to abut against the trigger, and another end of the first elastic resilient member is disposed to abut against the fixed member; The support device of claim 3 , wherein the first elastic return member is configured to apply a resilient force to the trigger to urge the trigger toward the first position.

5. The support device of claim 3 or 4, wherein the stationary member has an opening, and the trigger is movably disposed to pass through the opening.

6. The bottom leg includes: A base member connected to the supporting leg structure; The support device of any one of claims 1 to 5, further comprising: a cushioning member attached to the base member and having a contact floor surface, wherein at least a portion of the trigger protrudes from the contact floor surface when the trigger is in the first position.

7. the support leg body includes a first leg tube and a second leg tube, the first leg tube and the second leg tube being telescopically connected to each other; 7. The support apparatus of claim 6, further comprising a support member disposed on the first pedestal tube and the second pedestal tube and fixedly coupled to the first pedestal tube.

8. The alarm unit further comprises a wire; the wireless module is connected to the switch module via the wire; The support apparatus of claim 7 , wherein the wires are disposed within the support leg body and connected to the support members.

9. The switch module includes: a circuit board embedded in the fixing member and capable of communicating with the wireless module; The support device according to claim 3 , further comprising: a switch mechanically and electrically connected to the circuit board, the switch comprising a switch body and a contact terminal connected to the switch body.

10. The trigger is a base body disposed on a side of the bottom leg facing the supporting leg body; a trigger part attached to a side surface of the base body facing the fixed member and configured to urge the contact terminal to abut against the side surface of the trigger part when the trigger is in a second position; The support device of claim 9 , further comprising: a contact floor part attached to a side of the base body remote from the fixed member and movably arranged to pass through the through hole of the bottom leg.

11. A guide hole is disposed in the base body; A guide post is disposed between the fixed member and the bottom leg; The support device according to claim 10 , wherein the guide post extends along a height direction of the support leg body, and the guide post is slidably disposed so as to pass through the guide hole.

12. 12. The support device of claim 11, wherein one end of the guide post is connected to a side of the bottom leg facing the support leg body and the other end of the guide post is fixedly connected to a side of the fixed member adjacent the bottom leg.

13. The bottom leg includes: A base member connected to the supporting leg structure; a cushioning member attached to the base member and having a contact floor surface, wherein at least a portion of the trigger protrudes from the contact floor surface when the trigger is in the first position; The support apparatus of claim 12 , wherein the guide posts and the base member are of unitary construction.

14. A guide groove is provided on the inner wall of the second leg tube, The trigger has a protrusion, and the protrusion is slidably disposed within the guide groove. A supporting device according to any one of claims 7 to 13.

15. the support leg body includes a first leg tube and a second leg tube, the first leg tube and the second leg tube being telescopically connected to each other; the second leg tube has a plurality of lock holes arranged along the extension and contraction direction of the first leg tube and the second leg tube; the support device further comprises a locking structure coupled to the first pedestal tube and the second pedestal tube; The locking structure includes: a first engagement member rotatably disposed relative to the first pedestal tube; 15. The support device of claim 1, further comprising: a restoring member coupled between the first leg tube and the first engaging member and configured to provide an elastic force for the first engaging member to extend into any one of the plurality of locking holes.

16. the first engagement member includes an engagement hook configured to selectively extend into any one of the plurality of lock holes; The support device of claim 15, wherein the engagement hook has a guide lamp, the guide lamp being arranged to face any one of the plurality of lock holes and gradually inclined toward the side closer to the second leg tube along the extension direction of the second leg tube.

17. The locking structure further comprises: a bracket fixedly connected to the first pedestal tube, the first engagement member being rotatably connected to the bracket by a pivot; a fixed cover connected to the bracket and configured to cover the first engagement member and the restoring member, the fixed cover having a window through which a portion of the first engagement member is exposed to an outer surface of the fixed cover; 17. The support device of claim 15 or 16, further comprising: a first button connected to the first engagement member through the window.

18. A support device for a child safety seat, comprising: a first pedestal tube, the first pedestal tube having a plurality of first positioning holes in a height direction of the first pedestal tube; a second pedestal tube, the second pedestal tube slidably sleeved within the first pedestal tube; a locking device attached to the second pedestal tube and having a second engagement member configured to move between a locked position and an unlocked position, in which the second engagement member engages a corresponding locating hole and in which the second engagement member disengages from the corresponding locating hole; and a cushioning member provided on at least one of an inner sidewall of the first pedestal tube and the second engagement member.

19. 20. The support device of claim 18, wherein the cushioning member comprises a first cushioning layer covering the second engagement member, or the second engagement member is made of a material having cushioning properties and forms the cushioning member.

20. the first locating holes are formed in a sidewall body of the first pedestal tube; The support device described in claim 18 or 19, wherein the buffer member comprises a second cushion layer covering a partial region of the inner side wall of the side wall main body of the first leg tube, the partial region corresponding to the movement trajectory of the second engaging member and constituting an area in which the plurality of first positioning holes are arranged.

21. the first pedestal tube is made of metal; Each of the plurality of first positioning holes has an abutment wall, The support device of claim 20 , wherein the abutment wall is not covered by the second cushion layer and is configured to abut against the second engagement member.

22. Each of the plurality of first positioning holes includes a bottom wall opposite to the abutment wall, The second engagement member includes an engagement portion configured to extend into the corresponding first positioning hole, the engagement portion being in the form of a locking tongue, the engagement portion including a horizontal surface region and an inclined surface region; When the second engagement member is in the lock position, the horizontal surface area abuts against the abutment wall and the inclined surface area faces the bottom wall; 22. The support apparatus of claim 21, wherein when the second pedestal tube is pulled outward from the first pedestal tube, the inclined surface area contacts the bottom wall and the inner side wall of the first pedestal tube through the second cushion layer.

23. a rod-shaped adjustment member is provided on an inner side wall of the side wall body of the first leg tube, and the plurality of first positioning holes are arranged in the rod-shaped adjustment member; A support device as described in any one of claims 18 to 22, wherein the buffer member includes a third cushion layer covering a partial region of the rod-shaped adjustment member, the partial region being an area corresponding to the movement trajectory of the second engagement member and including an area in which the multiple first positioning holes are arranged.

24. The rod-shaped adjustment member is made of metal, Each of the plurality of first positioning holes includes an abutment wall, 24. The support device of claim 23, wherein the abutment wall is not covered by the second cushioning layer and is configured to abut against the second engagement member to lock the position of the second pedestal tube.

25. Each of the plurality of first positioning holes includes a bottom wall opposite to the abutment wall, The second engagement member includes an engagement portion configured to extend into the corresponding first positioning hole, the engagement portion having a shape of a locking tongue, and the engagement portion includes a horizontal surface region and an inclined surface region; When the second engagement member is in the lock position, the horizontal surface area abuts against the abutment wall and the inclined surface area faces the bottom wall; 25. The support device of claim 24, wherein when the second leg tube is pulled outward from the first leg tube, the inclined surface area contacts the bottom wall and the inner side wall of the rod-shaped adjustment member through the third cushion layer.

26. 26. The support device according to any one of claims 23 to 25, wherein the rod-shaped adjustment member is made of a material having shock-absorbing properties and forms the shock-absorbing member.

27. 27. A support device according to any one of claims 18 to 26, wherein the second engagement member is switched between the locked position and the unlocked position by rotating or translating.

28. a first end of the second pedestal tube disposed outside the first pedestal tube and a second end of the second pedestal tube disposed inside the first pedestal tube, the second end including a positioning member; 28. The support device of claim 27, wherein a first end of the second engagement member is rotatably coupled to the positioning member via the first shaft, and a second end of the second engagement member is configured to engage and disengage with a corresponding one of the first positioning holes.

29. the first end of the second pedestal tube comprises a bottom leg; The locking device further includes an operating button attached to the bottom leg, a pulling member, and a second elastic restoring member; the locking device is disposed on the bottom leg, and the traction member and the second elastic return member are disposed inside the second leg tube; the operating button is arranged to drive the second engagement member to rotate from a locked position to an unlocked position via the traction member; 30. The support apparatus of claim 28, wherein the second resilient return member is configured to urge the second engagement member to rotate from an unlocked position to a locked position.

30. The traction member is a rod-shaped member, the operation button abuts against a first end of the towing member via a first inclined surface, a first slot extending in a height direction of the towing member is disposed at a second end of the towing member, the first shaft is slidably engaged with the first slot; 30. The support device of claim 29, wherein one of the second end of the towing member and the second engagement member is provided with a second obliquely extending long hole and the other is provided with a second positioning hole, and a second shaft is positioned in the second long hole and the second positioning hole.

31. A child safety seat, comprising a support device according to any one of claims 1 to 30 at a front end of a base of the child safety seat, and the first leg tube of the support device is connected to the front end of the base.

32. 32. The child safety seat of claim 31, wherein the support device is a support device as claimed in any one of claims 1 to 18, and the wireless module of the support device is located on the base.

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