Automatic locking mechanism and safety seat

Abstract

The utility model discloses an automatic locking mechanism and a safety seat, the automatic locking mechanism comprises a locking mechanism main body, the locking mechanism main body is provided with a linkage piece, a lock pin and an unlocking assembly, the linkage piece and the lock pin are slidably arranged on the locking mechanism main body, one end of the lock pin is connected with the linkage piece in a matched mode, and the other end of the lock pin is connected with the unlocking assembly. A first elastic piece is arranged between the linkage piece and the locking mechanism body, the unlocking assembly is movably arranged on a sliding path of the linkage piece, and the first elastic piece is suitable for enabling the linkage piece to slide towards the unlocking assembly and enabling the linkage piece and the unlocking assembly to be in contact fit to form a first state and a second state. A second elastic piece is arranged between the lock pin and the linkage piece, the second elastic piece is suitable for enabling the lock pin to slide and stretch out of the locking mechanism body, the lock pin is suitable for stretching out or retracting relative to the locking mechanism body in the first state, and the lock pin is suitable for being limited by the linkage piece to keep retracting in the second state. The difficulty of pairing locking can be reduced, and automatic locking is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safety seats, in particular to an automatic locking mechanism and a safety seat. BACKGROUND

[0002] A child seat is a seat designed for children of different weights (or age groups) and installed in a car, which can effectively improve the safety of children riding in the car. Since the safety belt on the car is designed for adults, it is suitable for adults weighing 36 kg and taller than 140 cm. If a child who does not meet the weight and height requirements uses it, the safety belt will be stuck in the child's neck, which may cause greater harm to the child in the event of an accident. The connection between the safety seat and the car, as well as the connection and locking of the safety belt and other accessories of the safety seat, usually requires the use of a locking mechanism to ensure stability.

[0003] However, the existing locking mechanism has the following defects: the locking pin type locking mechanism is currently a common locking method. The existing locking pin type locking mechanism on the market generally requires manual triggering to extend or retract the locking pin when the locking pin needs to extend into the locking hole of another component, thereby realizing the locking and unlocking functions of the mechanism, which is not very convenient. SUMMARY

[0004] One object of the present application is to provide an automatic locking mechanism and a safety seat that is easy to operate and can automatically lock.

[0005] To achieve the above object, the technical solution adopted by the present application is as follows: an automatic locking mechanism, comprising a locking mechanism body, a linkage, a locking pin and an unlocking assembly are arranged on the locking mechanism body, the linkage and the locking pin are slidably arranged on the locking mechanism body, one end of the locking pin is connected with the linkage, a first elastic member is arranged between the linkage and the locking mechanism body, the unlocking assembly is movably arranged on the sliding path of the linkage, the first elastic member is adapted to make the linkage slide towards the unlocking assembly and make the linkage and the unlocking assembly contact and cooperate to form a first state and a second state, a second elastic member is arranged between the locking pin and the linkage, the second elastic member is adapted to make the locking pin slide and extend out of the locking mechanism body, the locking pin is adapted to extend out or retract relative to the locking mechanism body in the first state, and the locking pin is adapted to be limited by the linkage and kept retracted in the second state.

[0006] In some embodiments, the linkage is provided with a guide portion, a plane of the guide portion being parallel to the sliding path of the linkage and the sliding path of the locking pin, the guide portion being provided with a first end and a second end, the locking pin being adapted to cooperate with the first end in a first state, the locking pin being adapted to cooperate with the second end in a second state, a width of the first end on the sliding path of the locking pin being greater than a width of the second end on the sliding path of the locking pin.

[0007] In some embodiments, the guide portion is provided with a guide slope between the first end and the second end, the guide slope being adapted to guide the locking pin to switch between the first state and the second state.

[0008] In some embodiments, the guide portion is provided with a guide plane on a side of the locking mechanism body away from the second end along the sliding direction of the locking pin, the guide plane being adapted to guide the locking pin to extend out of or retract into the locking mechanism body; the guide portion is a hole type structure, a main shape of the guide portion being triangular.

[0009] In some embodiments, the unlocking assembly comprises an unlocking button and a third elastic member, the linkage is provided with an empty slot on a side close to the unlocking button, the third elastic member is adapted to make the unlocking button abut against the linkage outside the empty slot, the unlocking button is adapted to enter the empty slot so that the linkage is close to the unlocking button.

[0010] In some embodiments, the unlocking button is provided with an abutting column on a side close to the linkage, a cross section of the abutting column cooperating with a cross section of the empty slot, the abutting column is adapted to limit the contact between the unlocking button and the linkage, the abutting column is adapted to enter the empty slot so that the linkage is close to the unlocking button.

[0011] In some embodiments, the linkage is provided with a handle portion protruding from a surface or recessed in a surface; a length direction of the handle portion being perpendicular to the sliding direction of the linkage relative to the locking mechanism body.

[0012] In some embodiments, the locking mechanism body and the linkage are respectively provided with a positioning portion and a positioning column, the positioning portion being arranged along the sliding direction of the linkage relative to the locking mechanism body, the positioning column being adapted to cooperate with and be inserted into the positioning portion and slide along the positioning portion.

[0013] In some embodiments, the locking mechanism body is provided with support arms, the support arms are provided with telescopic channels, the other end of the locking pin is adapted to extend into the telescopic channel and slide along the telescopic channel, the number of the locking pins is two, the locking pins are symmetrically arranged on the locking mechanism body, and the number of the support arms is two, the support arms are symmetrically arranged on the locking mechanism body.

[0014] A safety seat comprising the automatic latch locking mechanism.

[0015] Compared with the prior art, the automatic latch locking mechanism and the safety seat have the beneficial effects that the structure of the locking pin is improved, the locking pin can have two states, the locking pin can freely extend or retract in the first state, the automatic latch of the locking mechanism can be realized, the locking mechanism can be locked without operating the locking mechanism to fold and align the locking mechanism, the locking pin can automatically retract in the second state, the automatic unlocking of the locking mechanism can be realized, and the convenience and comfort of the consumer operating the locking mechanism can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the locking pin extending from the locking mechanism body in the first state according to a preferred embodiment of the present application.

[0017] Figure 2 is a structural schematic view of the locking pin retracting into the locking mechanism body in the first state according to a preferred embodiment of the present application.

[0018] Figure 3 is a side view in the first state according to a preferred embodiment of the present application.

[0019] Figure 4 is a structural schematic view of the locking pin retracting into the locking mechanism body in the second state according to a preferred embodiment of the present application.

[0020] Figure 5 is a side view in the second state according to a preferred embodiment of the present application.

[0021] Figure 6 is an internal schematic view of the locking pin in the locking state according to a preferred embodiment of the present application.

[0022] Figure 7 is a cooperation schematic view of the unlocking assembly and the linkage according to a preferred embodiment of the present application.

[0023] Figure 8 is a connection schematic view of the locking pin and the locking mechanism body according to a preferred embodiment of the present application.

[0024] In the figure: 1, locking mechanism main body; 11, telescopic channel; 111, waist-shaped hole; 12, positioning column; 13, support arm; 2, linkage; 21, guide part; 211, first end; 212, second end; 213, guide inclined surface; 214, guide plane; 22, avoidance slot; 23, handle part; 24, positioning part; 3, lock pin; 31, convex shaft; 4, unlocking assembly; 41, unlocking button; 411, abutting column; 42, third elastic piece; 5, first elastic piece; 6, second elastic piece. DETAILED DESCRIPTION

[0025] Hereinafter, the present application will be further described in conjunction with specific embodiments, and it should be noted that, under the premise of not conflicting, the following described embodiments or technical features can be combined in any manner to form new embodiments.

[0026] In the description of the present application, it should be noted that, for orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0028] The terms "include" and "have" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] The present application will be further described below in conjunction with the drawings:

[0030] As Figures 1 to 8As shown, the present application provides an automatic locking mechanism, which comprises a locking mechanism body 1, a linkage 2, a locking pin 3 and an unlocking assembly 4 are arranged on the locking mechanism body 1, the linkage 2 and the locking pin 3 are slidably arranged on the locking mechanism body 1, the locking pin 3 can be extended out of the locking mechanism body 1 to realize the locking combination with the external structure by sliding, and can be retracted into the locking mechanism body 1 to realize the unlocking separation from the external structure, one end of the locking pin 3 is connected with the linkage 2 in a matched mode, so as to associate the sliding state of the linkage 2 with the sliding state of the locking pin 3, and make the action of the linkage 2 control the extension or retraction of the locking pin 3 out of or into the locking mechanism body 1.

[0031] Specifically, a first elastic member 5 is arranged between the linkage 2 and the locking mechanism body 1, the unlocking assembly 4 is movably arranged on the sliding path of the linkage 2, the first elastic member 5 is adapted to make the linkage 2 slide towards the unlocking assembly 4, and make the linkage 2 and the unlocking assembly 4 contact and match to form a first state and a second state, a second elastic member 6 is arranged between the linkage 2 and the locking pin 3, the second elastic member 6 is adapted to make the locking pin 3 slide and extend out of the locking mechanism body 1, and is used to make the locking pin 3 be able to reset and lock, the locking pin 3 is adapted to extend out of or retract into the locking mechanism body 1 in the first state, and is adapted to be limited to keep retracted by the linkage 2 in the second state.

[0032] The mutual cooperation of the unlocking assembly 4 and the linkage 2 can make the locking pin 3 obtain the first state and the second state, the locking pin 3 can freely slide within a certain range in the first state, the locking pin 3 can extend out of the locking mechanism body 1 to be locked or retract into the locking mechanism body 1 to be unlocked by sliding, by using this principle, the locking pin 3 can overcome the elastic force of the second elastic member 6 to retract into the locking mechanism body 1 when being pressed by the external structure, and then automatically pop out under the influence of the elastic force of the second elastic member 6 when the external structure is not pressed, so as to realize the clamping and matching locking with the structure such as the locking hole, thereby making the locking pin 3 be able to realize the automatic extension and retraction and locking; the locking pin 3 can retract into the locking mechanism body 1 to be unlocked in the second state, and is continuously limited by the linkage 2 to maintain the unlocking state and reduce the operation of the consumer.

[0033] As Figure 1 、 2In the embodiments shown in Figs. 1, 2, 3, 4 and 7, the linkage 2 is provided with a guide portion 21, the plane of the guide portion 21 is parallel to the sliding path of the linkage 2 and the sliding path of the locking pin 3, the guide portion 21 is provided with a first end 211 and a second end 212, the locking pin 3 is adapted to cooperate with the first end 211 in the first state, the locking pin 3 is adapted to cooperate with the second end 212 in the second state, the width of the first end 211 on the sliding path of the locking pin 3 is greater than the width of the second end 212 on the sliding path of the locking pin 3, that is, the sliding freedom of the locking pin 3 at the first end 211 is greater than that at the second end 212, so that a greater stroke is achieved at the second end 212 to achieve the unlocking and locking operation.

[0034] As shown in Figs. 1, 2, 3, 4 and 7, Figure 1 , 2 In the embodiments shown in Figs. 1, 2, 3, 4 and 7, the guide portion 21 is provided with a guide slope 213 on the side of the locking mechanism body 1 close to the locking pin 3 between the first end 211 and the second end 212, the guide slope 213 is adapted to guide the switching of the locking pin 3 between the first state and the second state, thereby improving the smoothness of the switching of the locking pin 3 between the first state and the second state and reducing the probability of jamming of the locking pin 3.

[0035] As shown in Figs. 1, 2, 3, 4 and 7, Figure 1 , 2 In the embodiments shown in Figs. 1, 2, 3, 4 and 7, the guide portion 21 is provided with a guide plane 214 on the side of the locking pin 3 away from the second end 212, the guide plane 214 is adapted to guide the extension or retraction of the locking pin 3 from the locking mechanism body 1, the guide plane 214 can guide the smooth sliding of the locking pin 3 in the first state and improve the stability of the extension and retraction process of the locking pin 3, thereby improving the locking strength.

[0036] As shown in Figs. 1, 2, 3, 4 and 7, Figure 1 , 2 In the embodiments shown in Figs. 1, 2, 3, 4 and 7, the guide portion 21 is a hole type structure, which can reduce the weight and the overall volume and reduce the difficulty of arrangement of the locking mechanism, the main shape of the guide portion 21 is triangular, the guide slope 213 is the oblique side of the guide portion 21, and the guide plane 214 is the straight side of the guide portion 21, which can ensure the smoothness of the movement of the locking pin 3 and make the structure of the guide portion 21 more stable.

[0037] Specifically, when the guide portion 21 is a hole type structure, the locking pin 3 is provided with a convex shaft 31 on one side of the guide portion 21, the convex shaft 31 can extend into the triangular hole of the guide portion 21, the sliding of the locking pin 3 can change the position of the convex shaft 31 in the triangular hole of the guide portion 21, and the sliding of the locking pin 3 can be limited by limiting the movement of the convex shaft 31 through the triangular hole of the guide portion 21.

[0038] As shown in Figs. 1, 2, 3, 4 and 7, Figure 8As shown, it can be understood that the locking pin 3 is provided with a convex shaft 31 away from the guide part 21, the locking mechanism body 1 is provided with an extension channel 11, the extension channel 11 is provided with a waist-shaped hole 111, the locking pin 3 is adapted to slide along the extension channel 11, and the convex shaft 31 is adapted to cooperate with the waist-shaped hole 111, thereby further improving the stability of the sliding of the locking pin 3 on the locking mechanism body 1.

[0039] As shown in the embodiments of Figures 1 to 5 , 6, the unlocking assembly 4 includes an unlocking button 41 and a third elastic member 42, the linkage 2 is provided with an empty slot 22 near the unlocking button 41, the third elastic member 42 is adapted to make the unlocking button 41 abut against the linkage 2 outside the empty slot 22, the unlocking button 41 is adapted to enter the empty slot 22 to make the linkage 2 close to the unlocking button 41, and the unlocking button 41 can make the locking pin 3 remain in the first state when abutting against the linkage 2 outside the empty slot 22. When the unlocking button 41 is pressed down, the linkage 2 can slide under the action of the first elastic member 5, thereby making the locking pin 3 enter the second state. The unlocking assembly 4 in the form of the unlocking button 41 can effectively reduce the unlocking difficulty, and the position change between the linkage 2 and the unlocking button 41 can also reflect the unlocking state, which is convenient for consumers to observe.

[0040] As shown in the embodiments of Figure 3 and 5 , the unlocking button 41 and the third elastic member 42 are arranged perpendicular to the sliding direction of the linkage 2, and the third elastic member 42 is adapted to make the unlocking button 41 move perpendicular to the sliding direction of the linkage 2, thereby making the unlocking button 41 away from or aligned with the empty slot 22 to realize the abutting cooperation between the unlocking button 41 and the linkage 2.

[0041] As shown in the embodiments of Figures 1 to 5 , 6, the unlocking button 41 is provided with an abutting column 411 near the linkage 2, the cross section of the abutting column 411 cooperates with the cross section of the empty slot 22, the abutting column 411 is adapted to limit the contact between the unlocking button 41 and the linkage 2, and the abutting column 411 is adapted to enter the empty slot 22 to make the linkage 2 close to the unlocking button 41. The abutting column 411 can improve the contact stroke between the linkage 2 and the unlocking button 41, thereby adapting to the space required for the cooperation between the linkage 2 and the locking pin 3, and reducing the probability of the unlocking button 41 being impacted by directly contacting the unlocking button 41.

[0042] In some embodiments, the first elastic member 5, the second elastic member 6 and the third elastic member 42 all use springs.

[0043] In some embodiments, the linkage 2 is provided with a handle part 23 protruding from the surface or recessed in the surface.

[0044] In some embodiments, the length direction of the handle portion 23 is perpendicular to the sliding direction of the linkage 2 relative to the locking mechanism body 1.

[0045] As shown in the embodiments of Figures 1 to 7 , the handle portion 23 is recessed on the surface of the linkage 2, which can make full use of the space between the linkage 2 and the unlocking mechanism body, improve the compactness of the locking mechanism, and thus reduce the overall volume.

[0046] In some embodiments, the locking mechanism body 1 and the linkage 2 are respectively provided with a positioning portion 24 and a positioning column 12, the positioning portion 24 is arranged along the sliding direction of the linkage 2 relative to the locking mechanism body 1, the positioning column 12 is adapted to be inserted into the positioning portion 24 and slide along the positioning portion 24, and the positioning portion 24 and the positioning column 12 can improve the stability and smoothness of the sliding of the linkage 2 on the locking mechanism body 1.

[0047] As shown in the embodiments of Figure 1 , 2 , 4 and 7, the number of the positioning portion 24 and the positioning column 12 is three, which are respectively arranged in a triangular distribution on the locking mechanism body 1 and the linkage 2, so as to further improve the cooperation of the linkage 2 and the locking mechanism body 1.

[0048] It can be understood that the positioning portion 24 and the positioning column 12 can also limit the maximum stroke of the linkage 2 sliding on the locking mechanism body 1, reduce the impact on the unlocking assembly 4 when the linkage 2 is reset, and thus improve the structural stability.

[0049] As shown in the embodiments of Figures 1 to 5 , the locking mechanism body 1 is provided with a support arm 13, the support arm 13 is provided with an extension channel 11, the other end of the locking pin 3 is adapted to extend into the extension channel 11 and slide along the extension channel 11, and the support arm 13 is used to strengthen the connection strength between the locking pin 3 and the locking mechanism body 1, which can help guide the locking pin 3 and improve the stability during the sliding of the locking pin 3.

[0050] As shown in the embodiments of Figures 1 to 6 , the number of the locking pin 3 is two, and the locking pin 3 is symmetrically arranged on the locking mechanism body 1, which can make the locking mechanism body 1 more firmly buckled and locked on the external structure, so as to effectively improve the locking strength and stability.

[0051] As shown in the embodiments of Figures 1 to 6 , the locking pin 3 and the support arm 13 are arranged one by one, when the number of the locking pin 3 is two, the number of the support arm 13 is also two, and the support arm 13 is symmetrically arranged on the locking mechanism body 1.

[0052] The application also provides a safety seat comprising the automatic locking mechanism of any of the above embodiments. The locking mechanism of the application can be mainly applied to the safety belt pressing structure of the safety seat. Compared with the traditional locking mechanism, the complicated operation of continuously operating to maintain the unlocking state and aligning the locking pin 3 to the locking position on the safety seat for locking is not needed in the locking process of the locking mechanism of the application. Only the locking mechanism needs to be pressed to the locking position, and the locking pin 3 can be automatically locked by automatic extension, which can effectively reduce the locking difficulty of the consumer in the process of pressing the safety belt to lock.

[0053] The above describes the basic principles, main features and advantages of the application. It should be understood by those skilled in the art that the application is not limited to the above embodiments. The above embodiments and descriptions are only the principles of the application. Without departing from the spirit and scope of the application, various changes and improvements can be made to the application. These changes and improvements fall within the scope of the claimed application. The scope of protection of the application is defined by the appended claims and their equivalents.

Claims

1. An automatic drop lock locking mechanism characterized by: The locking mechanism body is provided with a linkage, a lock pin and an unlocking assembly. The linkage and the lock pin are slidably arranged on the locking mechanism body. One end of the lock pin is connected with the linkage. A first elastic member is arranged between the linkage and the locking mechanism body. The first elastic member is adapted to make the linkage slide towards the unlocking assembly and make the linkage and the unlocking assembly contact and cooperate to form a first state and a second state. A second elastic member is arranged between the lock pin and the linkage. The second elastic member is adapted to make the lock pin slide and extend out of the locking mechanism body. In the first state, the lock pin is adapted to extend out of or retract into the locking mechanism body. In the second state, the lock pin is adapted to be limited by the linkage and kept retracted.

2. An automatic drop-bolt locking mechanism as defined in claim 1, wherein: The linkage is provided with a guide portion. The plane of the guide portion is parallel to the sliding path of the linkage and the sliding path of the lock pin. The guide portion is provided with a first end and a second end. In the first state, the lock pin is adapted to cooperate with the first end. In the second state, the lock pin is adapted to cooperate with the second end. The width of the first end on the sliding path of the lock pin is greater than the width of the second end on the sliding path of the lock pin.

3. An automatic latch locking mechanism as defined in claim 2, wherein: The guide portion is provided with a guide inclined surface between the first end and the second end and close to the side where the lock pin extends out of the locking mechanism body. The guide inclined surface is adapted to guide the lock pin to switch between the first state and the second state.

4. An automatic latch locking mechanism as defined in claim 3 wherein: The guide portion is provided with a guide plane along the sliding direction of the lock pin on the side where the first end is away from the second end. The guide plane is adapted to guide the lock pin to extend out of or retract into the locking mechanism body. The guide portion is a hole type structure. The main shape of the guide portion is triangular.

5. An automatic latch locking mechanism as defined in claim 1, wherein: The unlocking assembly includes an unlocking button and a third elastic member. The linkage is provided with an empty slot on the side close to the unlocking button. The third elastic member is adapted to make the unlocking button resist and cooperate with the linkage outside the empty slot. The unlocking button is adapted to enter the empty slot so that the linkage is close to the unlocking button.

6. An automatic latch locking mechanism as defined in claim 5, wherein: The unlocking button is provided with an abutting column on the side close to the linkage. The cross section of the abutting column cooperates with the cross section of the empty slot. The abutting column is adapted to limit the contact between the unlocking button and the linkage. The abutting column is adapted to enter the empty slot so that the linkage is close to the unlocking button.

7. An automatic latch locking mechanism as in claim 1, wherein: The linkage is provided with a handle portion protruding from the surface or recessed in the surface. The length direction of the handle portion is perpendicular to the sliding direction of the linkage relative to the locking mechanism body.

8. An automatic latch locking mechanism as in claim 1, wherein: The locking mechanism body and the linkage are respectively provided with a positioning portion and a positioning column. The positioning portion is arranged along the sliding direction of the linkage relative to the locking mechanism body. The positioning column is adapted to be inserted into the positioning portion and slide along the positioning portion.

9. An automatic latch locking mechanism as in claim 1, wherein: The locking mechanism body is provided with support arms, the support arms are provided with telescopic channels, the other ends of the locking pins are adapted to extend into the telescopic channels and slide along the telescopic channels; the number of the locking pins is two, and the locking pins are symmetrically arranged on the locking mechanism body; the number of the support arms is two, and the support arms are symmetrically arranged on the locking mechanism body.

10. A safety seat, characterized by: The automatic drop lock locking mechanism comprises the automatic drop lock locking mechanism according to any one of claims 1 to 9.

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