Automatic locking mechanism and safety seat

Abstract

An automatic locking mechanism and a safety seat. The locking mechanism comprises a locking mechanism body. The locking mechanism body is provided with a linkage member, locking pins, and an unlocking assembly. The linkage member and the locking pins are slidably arranged on the locking mechanism body. On end of each locking pin is engaged with and connected to the linkage member. A first elastic member is arranged between the linkage member and the locking mechanism body. The unlocking assembly is movably arranged on the sliding path of the linkage member. The first elastic member is adapted to enable the linkage member to slide toward the unlocking assembly, and enable the linkage member and the unlocking assembly to come into contact and work in conjunction with each other to form a first state and a second state. A second elastic member is arranged between the locking pins and the linkage member. The second elastic member is adapted to enable the locking pins to slide and extend out of the locking mechanism body. When in the first state, the locking pins are adapted to extend or retract relative to the locking mechanism body, and when in the second state, the locking pins are adapted to remain retracted due to the constraint of the linkage member.

Description

An automatic locking mechanism and a child safety seat Technical Field

[0001] This application relates to the field of child safety seat technology, specifically to an automatic locking mechanism and a child safety seat. Background Technology

[0002] A child car seat is a seat designed specifically for children of different weights (or ages) and installed in a car to effectively improve children's safety while riding in the car. Since car seat belts are designed according to adult standards and are suitable for adults weighing 36kg and over 140cm in height, if used by children who do not meet the weight and height requirements, the seat belt will be stuck around the child's neck, which may cause greater harm to the child in the event of an accident. The connection between the child car seat and the car, as well as the connection and locking of the child car seat's seat belt and other accessories, usually requires the use of a locking mechanism to ensure the stability of the connection.

[0003] However, existing locking mechanisms have the following drawbacks: the pin-type locking mechanism is currently the most common locking method. The existing pin-type locking mechanisms on the market generally require manual triggering to extend or retract the pin when it needs to be inserted into the locking hole of other parts, so as to realize the locking and unlocking functions of the mechanism, which is relatively inconvenient. Summary of the Invention

[0004] One object of this application is to provide an easy-to-operate, automatically locking mechanism and a child safety seat.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: an automatic locking mechanism, comprising a locking mechanism body, wherein a linkage, a locking pin, and an unlocking component are provided on the locking mechanism body, the linkage and the locking pin are slidably disposed on the locking mechanism body, one end of the locking pin is connected to the linkage, a first elastic element is provided between the linkage and the locking mechanism body, and the unlocking component is movably disposed on the sliding path of the linkage, the first elastic element being adapted to cause the linkage to slide towards the unlocking component, and to cause the linkage and the unlocking component to contact and cooperate to form a first state and a second state, a second elastic element being provided between the locking pin and the linkage, the second elastic element being adapted to cause the locking pin to slide and extend out of the locking mechanism body, the locking pin being adapted to extend or retract relative to the locking mechanism body in the first state, and the locking pin being adapted to be kept retracted by the linkage in the second state.

[0006] In some embodiments, the linkage is provided with a guide portion, the plane of which is parallel to the sliding path of the linkage and the sliding path of the locking pin, the guide portion is provided with a first end and a second end, the locking pin is adapted to cooperate with the first end in a first state, the locking pin is adapted to cooperate with the second end in a second state, and the width of the first end on the sliding path of the locking pin is greater than the 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 ramp near the side of the locking pin extending from the main body of the locking mechanism between the first end and the second end, the guide ramp being adapted to guide the locking pin to switch between a first state and a second state.

[0008] In some embodiments, the guide portion has a guide plane on the side of the first end 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 or retract from the locking mechanism body; the guide portion has a hole-type structure, and the main body of the guide portion is triangular in shape.

[0009] In some embodiments, the unlocking component includes an unlocking button and a third elastic member. The linkage member has a clearance groove on the side near the unlocking button. The third elastic member is adapted to allow the unlocking button to abut against the linkage member outside the clearance groove. The unlocking button is adapted to enter the clearance groove so that the linkage member is close to the unlocking button.

[0010] In some embodiments, an abutment post is provided on the side of the unlock button near the linkage member. The cross-section of the abutment post matches the cross-section of the clearance groove. The abutment post is adapted to restrict the contact between the unlock button and the linkage member. The abutment post is adapted to enter the clearance groove so that the linkage member is close to the unlock button.

[0011] In some embodiments, the linkage is provided with a handle portion protruding from or recessed from the surface; the length direction of the handle portion is 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 part and a positioning post. The positioning part is arranged along the sliding direction of the linkage relative to the locking mechanism body, and the positioning post is adapted to be inserted into the positioning part and slide along the positioning part.

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

[0014] A child safety seat, comprising any of the above-described automatic locking mechanisms.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: The automatic locking mechanism and safety seat of this application improve the structure of the locking pin, so that the locking pin can have two states. In the first state, the locking pin can freely extend or retract, thereby realizing the automatic locking of the locking mechanism. Locking can be performed without operating the locking mechanism to retract or align it. In the second state, the locking pin can automatically retract, thereby realizing the automatic unlocking of the locking mechanism. This can effectively improve the convenience and comfort of consumers operating the locking mechanism. Attached Figure Description

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

[0017] Figure 2 is a structural schematic diagram of the locking mechanism body in the first state according to a preferred embodiment of this application when the locking pin retracts.

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

[0019] Figure 4 is a structural schematic diagram of the locking mechanism body in the second state according to a preferred embodiment of this application when the locking pin retracts.

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

[0021] Figure 6 is an internal schematic diagram of the locking pin according to a preferred embodiment of the present application when it is locked.

[0022] Figure 7 is a schematic diagram of the engagement of the unlocking component and the linkage according to a preferred embodiment of this application.

[0023] Figure 8 is a schematic diagram of the connection between the locking pin and the main body of the locking mechanism according to a preferred embodiment of this application.

[0024] In the diagram: 1. Locking mechanism body; 11. Telescopic channel; 111. Waist-shaped hole; 12. Positioning post; 13. Support arm; 2. Linkage component; 21. Guide part; 211. First end; 212. Second end; 213. Guide slope; 214. Guide plane; 22. Clearance groove; 23. Handle part; 24. Positioning part; 3. Locking pin; 31. Protruding shaft; 4. Unlocking component; 41. Unlocking button; 411. Abutting post; 42. Third elastic element; 5. First elastic element; 6. Second elastic element. Detailed Implementation

[0025] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

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

[0028] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this 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 is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0029] The following description, in conjunction with the accompanying drawings, further illustrates this application:

[0030] As shown in Figures 1 to 8, this application provides an automatic locking mechanism, including a locking mechanism body 1. The locking mechanism body 1 is provided with a linkage 2, a locking pin 3, and an unlocking component 4. The linkage 2 and the locking pin 3 are slidably disposed on the locking mechanism body 1. The locking pin 3 can extend out of the locking mechanism body 1 to lock with an external structure by sliding, and can also retract into the locking mechanism body 1 to unlock and separate from the external structure. One end of the locking pin 3 is connected to the linkage 2, thereby associating the sliding state of the linkage 2 with the sliding state of the locking pin 3, so that the action of the linkage 2 can control the extension or retraction of the locking pin 3 from the locking mechanism body 1.

[0031] Specifically, a first elastic element 5 is provided between the linkage 2 and the main body 1 of the locking mechanism. The unlocking component 4 is movably disposed on the sliding path of the linkage 2. The first elastic element 5 is adapted to make the linkage 2 slide towards the unlocking component 4, and make the linkage 2 and the unlocking component 4 contact and cooperate to form a first state and a second state. A second elastic element 6 is provided between the locking pin 3 and the linkage 2. The second elastic element 6 is adapted to make the locking pin 3 slide and extend out of the main body 1 of the locking mechanism. The second elastic element 6 is used to enable the locking pin 3 to reset and lock. In the first state, the locking pin 3 is adapted to extend or retract relative to the main body 1 of the locking mechanism. In the second state, the locking pin 3 is adapted to be restricted by the linkage 2 and kept retracted.

[0032] The cooperation between the unlocking component 4 and the linkage 2 enables the locking pin 3 to achieve a first state and a second state. In the first state, the locking pin 3 can slide freely within a certain range. By sliding, the locking pin 3 can extend relative to the main body of the locking structure to lock, or retract relative to the main body of the locking mechanism to unlock. Utilizing this principle, when the locking pin 3 is pressed by an external structure, it can overcome the elastic force of the second elastic element 6 and retract relative to the main body of the locking mechanism. Then, when the external structural pressure disappears, it automatically pops out under the influence of the elastic force of the second elastic element 6 to achieve a locking engagement with the locking hole and other structures, thereby enabling the locking pin 3 to automatically extend and retract to lock. In the second state, the locking pin 3 can retract relative to the main body of the locking mechanism to unlock, and is continuously restricted by the linkage 2 to maintain the unlocked state, reducing the user's operation.

[0033] In the embodiments shown in Figures 1, 2, 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 and 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 degree of freedom of the locking pin 3 at the first end 211 is greater than the sliding degree of freedom at the second end 212, thereby achieving a larger stroke extension and retraction at the second end 212 to realize the unlocking and locking operations.

[0034] In the embodiments shown in Figures 1, 2, 4 and 7, the guide portion 21 is provided with a guide slope 213 near the side of the locking pin 3 extending out of the locking mechanism body 1 between the first end 211 and the second end 212. The guide slope 213 is suitable for guiding the locking pin 3 to switch between the first state and the second state, thereby improving the smoothness of the switching between the first state and the second state and reducing the probability of the locking pin 3 getting stuck.

[0035] In the embodiments shown in Figures 1, 2, 4 and 7, the guide portion 21 is provided with a guide plane 214 along the sliding direction of the locking pin 3 on the side of the first end 211 away from the second end 212. The guide plane 214 is suitable for guiding the locking pin 3 to extend or retract into the locking mechanism body 1. The guide plane 214 can guide the locking pin 3 to slide smoothly in the first state and improve the stability of the locking pin 3 during the extension and retraction process, thereby improving the locking strength.

[0036] In the embodiments shown in Figures 1, 2, 4 and 7, the guide part 21 has a hole-shaped structure, which can reduce weight and reduce the overall volume, thus reducing the difficulty of arranging the locking mechanism. The main body of the guide part 21 is triangular in shape, the guide slope 213 is the hypotenuse of the guide part 21, and the guide plane 214 is the straight side of the guide part 21. This can ensure the smooth movement of the locking pin 3 while making the structure of the guide part 21 more stable.

[0037] Specifically, when the guide part 21 has a hole-type structure, the locking pin 3 is provided with a protruding shaft 31 on one side of the guide part 21. The protruding shaft 31 can extend into the triangular hole of the guide part 21. The sliding of the locking pin 3 can change the position of the protruding shaft 31 in the triangular hole of the guide part 21. The sliding of the locking pin 3 can be restricted by limiting the movement of the protruding shaft 31 through the triangular hole of the guide part 21.

[0038] As shown in Figure 8, it can be understood that a convex shaft 31 is provided on the side of the locking pin 3 away from the guide part 21, and a telescopic channel 11 is provided on the main body 1 of the locking mechanism. An oblong hole 111 is opened in the telescopic channel 11. The locking pin 3 is suitable for sliding along the telescopic channel 11, and the convex shaft 31 is suitable for cooperating with the oblong hole 111, thereby further improving the stability of the locking pin 3 sliding on the main body 1 of the locking mechanism.

[0039] In the embodiments shown in Figures 1 to 5 and 6, the unlocking component 4 includes an unlocking button 41 and a third elastic member 42. The linkage member 2 has a clearance groove 22 on the side near the unlocking button 41. The third elastic member 42 is adapted to allow the unlocking button 41 to abut against the linkage member 2 outside the clearance groove 22. The unlocking button 41 is adapted to enter the clearance groove 22 so that the linkage member 2 is close to the unlocking button 41. When the unlocking button 41 abuts against the linkage member 2 outside the clearance groove 22, the locking pin 3 can be kept in the first state. When the unlocking button 41 is pressed, the linkage member 2 can slide under the action of the first elastic member 5, thereby allowing the locking pin 3 to enter the second state. The unlocking component 4, through the form of the unlocking button 41, can effectively reduce the unlocking difficulty. At the same time, the positional change between the linkage member 2 and the unlocking button 41 can also reflect the unlocking state, making it convenient for consumers to observe.

[0040] In the embodiments shown in Figures 3 and 5, the unlock button 41 and the third elastic member 42 are arranged along the sliding direction perpendicular to the linkage member 2. The third elastic member 42 is adapted to move the unlock button 41 along the sliding direction perpendicular to the linkage member 2, thereby moving the unlock button 41 away from or aligned with the clearance groove 22, and achieving abutment and engagement with the linkage member 2.

[0041] In the embodiments shown in Figures 1 to 5 and 6, an abutment post 411 is provided on the side of the unlock button 41 near the linkage 2. The cross-section of the abutment post 411 matches the cross-section of the clearance groove 22. The abutment post 411 is suitable for restricting the contact between the unlock button 41 and the linkage 2. The abutment post 411 is suitable for entering the clearance groove 22 so that the linkage 2 can approach the unlock button 41. The abutment post 411 can increase the contact stroke between the linkage 2 and the unlock button 41, thereby adapting to the space required for the linkage 2 to cooperate with the locking pin 3, and reducing the probability of the linkage 2 directly contacting the unlock button 41 and impacting the unlock button 41.

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

[0043] In some embodiments, the linkage 2 is provided with a handle portion 23 that protrudes from or is recessed into 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] In the embodiments shown in 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 part 24 and a positioning post 12. The positioning part 24 is arranged along the sliding direction of the linkage 2 relative to the locking mechanism body 1. The positioning post 12 is adapted to be inserted into the positioning part 24 and slide along the positioning part 24. The positioning part 24 and the positioning post 12 can improve the stability and smoothness of the linkage 2 sliding on the locking mechanism body 1.

[0047] In the embodiments shown in Figures 1, 2, 4 and 7, there are three positioning parts 24 and three positioning posts 12, which are arranged in a triangular distribution on the main body 1 of the locking mechanism and the linkage 2, thereby further improving the cooperation between the linkage 2 and the main body 1 of the locking mechanism.

[0048] Understandably, the positioning part 24 and the positioning post 12 can also limit the maximum stroke of the linkage 2 sliding on the main body 1 of the locking mechanism, reduce the impact on the unlocking component 4 when the linkage 2 is reset, and thus improve the structural stability.

[0049] In the embodiments shown in Figures 1 to 5, a support arm 13 is provided on the main body 1 of the locking mechanism, and a telescopic channel 11 is provided on the support arm 13. The other end of the locking pin 3 is adapted to extend into the telescopic channel 11 and slide along the telescopic channel 11. The support arm 13 is used to strengthen the connection between the locking pin 3 and the main body 1 of the locking mechanism, and can help guide the locking pin 3 and improve the stability of the locking pin 3 during the sliding process.

[0050] In the embodiments shown in Figures 1 to 6, there are two locking pins 3, which are symmetrically arranged on the main body 1 of the locking mechanism. This enables the main body 1 of the locking mechanism to be more firmly fastened and locked to the external structure, thereby effectively improving the locking strength and stability.

[0051] In the embodiments shown in Figures 1 to 6, the locking pins 3 and the support arms 13 are arranged in a one-to-one correspondence. When there are two locking pins 3, there are also two support arms 13. The support arms 13 are symmetrically arranged on the main body 1 of the locking mechanism.

[0052] This application also provides a child safety seat, including the automatic locking mechanism of any of the above embodiments. The locking mechanism of this application can be mainly applied to the seat belt clamping structure of the child safety seat. Compared with the traditional locking mechanism, which requires continuous operation to maintain the unlocked state and to lock the locking pin 3 by aligning it with the locking position on the child safety seat, the locking mechanism of this application does not require any other operation during the locking process. It only needs to press the locking mechanism to the locking position, and the locking pin 3 can automatically lock by automatically extending and retracting. This can effectively reduce the locking difficulty for consumers during the process of clamping the seat belt and locking.

[0053] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are only the principles of this application. Various changes and modifications can be made to this application without departing from the spirit and scope of this application. All such changes and modifications fall within the scope of this application as claimed. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. An automatic locking mechanism, characterized in that: The device includes a locking mechanism body, on which a linkage, a locking pin, and an unlocking component are disposed. The linkage and the locking pin are slidably disposed on the locking mechanism body. One end of the locking pin is connected to the linkage. A first elastic element is disposed between the linkage and the locking mechanism body. The unlocking component is movably disposed on the sliding path of the linkage. The first elastic element is adapted to cause the linkage to slide towards the unlocking component, and to cause the linkage and the unlocking component to contact and engage to form a first state and a second state. A second elastic element is disposed between the locking pin and the linkage. The second elastic element is adapted to cause the locking pin to slide and extend out of the locking mechanism body. In the first state, the locking pin is adapted to extend or retract relative to the locking mechanism body. In the second state, the locking pin is adapted to be kept retracted by the linkage.

2. The automatic locking mechanism as described in claim 1, characterized in that: The linkage is provided with a guide portion, the plane of which is parallel to the sliding path of the linkage and the sliding path of the locking pin. The guide portion is provided with a first end and a second end. The locking pin is adapted to cooperate with the first end in a first state and to cooperate with the second end in a second state. The width of the first end on the sliding path of the locking pin is greater than the width of the second end on the sliding path of the locking pin.

3. The automatic locking mechanism as described in claim 2, characterized in that: The guide portion has a guide slope on the side of the locking mechanism body near the locking pin between the first end and the second end. The guide slope is adapted to guide the locking pin to switch between the first state and the second state.

4. The automatic locking mechanism as described in claim 3, characterized in that: The guide portion has a guide plane on the side of the first end away from the second end along the sliding direction of the locking pin. The guide plane is adapted to guide the locking pin to extend or retract into the main body of the locking mechanism. The guide portion has a hole-type structure, and the main body of the guide portion is triangular in shape.

5. The automatic locking mechanism as described in claim 1, characterized in that: The unlocking component includes an unlocking button and a third elastic member. The linkage member has a clearance groove on the side near the unlocking button. The third elastic member is adapted to allow the unlocking button to abut against the linkage member outside the clearance groove. The unlocking button is adapted to enter the clearance groove so that the linkage member is close to the unlocking button.

6. The automatic locking mechanism as described in claim 5, characterized in that: The unlock button is provided with an abutment post on the side near the linkage member. The cross-section of the abutment post matches the cross-section of the clearance groove. The abutment post is adapted to restrict the contact between the unlock button and the linkage member. The abutment post is adapted to enter the clearance groove so that the linkage member is close to the unlock button.

7. The automatic locking mechanism as described in claim 1, characterized in that: The linkage component is provided with a handle portion that protrudes from or is recessed into the surface; the length direction of the handle portion is perpendicular to the sliding direction of the linkage component relative to the main body of the locking mechanism.

8. The automatic locking mechanism as described in claim 1, characterized in that: The locking mechanism body and the linkage are respectively provided with a positioning part and a positioning post. The positioning part is arranged along the sliding direction of the linkage relative to the locking mechanism body. The positioning post is adapted to be inserted into the positioning part and slide along the positioning part.

9. The automatic locking mechanism as described in claim 1, characterized in that: The locking mechanism body is provided with a support arm, and the support arm has a telescopic channel. The other end of the locking pin is adapted to extend into the telescopic channel and slide along the telescopic channel. There are two locking pins, which are symmetrically arranged on the locking mechanism body. There are also two support arms, which are symmetrically arranged on the locking mechanism body.

10. A child safety seat, characterized in that: Includes the automatic locking mechanism as described in any one of claims 1 to 9.

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