A releasable locking device for a seat belt buckle

Abstract

The application provides a releasable locking device for a seat belt buckle, and relates to the technical field of seat belts, which comprises a releasable locking mechanism for detachably connecting a seat belt buckle and a fixing part, the releasable locking mechanism comprises a first connecting part, a second connecting part and a locking assembly, the first connecting part is detachably connected with the second connecting part; the locking assembly comprises a locking part and a driving mechanism connected with the locking part in transmission, the locking part can be moved to a locking position to lock the first connecting part and the second connecting part to a connected state, and the driving mechanism can drive the locking part to slide away from the locking position to make the first connecting part and the second connecting part separate; when an accident occurs to a vehicle, the application can timely release the locking state of the first connecting part and the second connecting part, make the seat belt buckle and the fixing part smoothly separate, and thus realize the rapid escape of a person.

Description

Technical Field

[0001] This invention relates to the field of seat belt technology, and more specifically to a releasable locking device for a seat belt buckle. Background Technology

[0002] In recent years, with the country's vigorous development of new energy vehicles, more and more consumers are paying attention to the safety of these vehicles. Due to the limitations of the batteries currently used in new energy vehicles, fires involving vehicle power batteries are relatively common. Because of the characteristics of lithium batteries, fires in new energy vehicle batteries are often very rapid and intense. Therefore, being able to leave the vehicle as quickly as possible after an accident is crucial for survival. Most existing passenger cars use pre-tensioned seat belts, which lack automatic unlocking functions. After an accident, the seat belts often become difficult to untie, greatly hindering occupants' escape and posing a safety hazard. Summary of the Invention

[0003] The purpose of this invention is to provide a releasable locking device for seat belt buckles, in order to solve the technical problem that existing pre-tensioned seat belts are difficult to release in the event of an accident, thus affecting the escape of personnel and posing a safety hazard. The preferred technical solution among the many technical solutions provided by this invention can produce many technical effects, which are described in detail below.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This invention provides a releasable locking device for a seatbelt buckle, comprising a releasable locking mechanism for detachably connecting the seatbelt buckle and a fastener. The releasable locking mechanism includes a first connecting member, a second connecting member, and a locking assembly, wherein: the first connecting member and the second connecting member are detachably connected; the locking assembly includes a locking member and a driving mechanism pulsatorically connected to the locking member, the locking member being movable to a locking position to lock the first connecting member and the second connecting member into a connected state, and the driving mechanism being able to drive the locking member to slide away from the locking position to disengage the first connecting member and the second connecting member.

[0006] Preferably, the first connecting member is configured as a claw, the second connecting member is configured as a pin connecting rod, the locking member is configured as a movable locking sleeve, and the driving mechanism includes a micro gas generator, wherein: the claw can be inserted into the pin connecting rod; the movable locking sleeve can move and be fitted onto the outside of the claw to lock the claw and the pin connecting rod into an inserted state; the micro gas generator can drive the movable locking sleeve to slide away from the claw, so that the claw disengages from the pin connecting rod.

[0007] Preferably, a top block is provided inside the movable locking sleeve, and the movable locking sleeve can move relative to the top block. The thrust surface of the top block and the inner wall of the movable locking sleeve form a thrust cavity. The micro gas generator is fixedly installed on the movable locking sleeve and can release gas into the thrust cavity so that the movable locking sleeve slides away from the chuck under the action of gas thrust.

[0008] Preferably, the two ends of the pin connecting rod are respectively configured as a connecting end and a plug-in end, and an elastic pad is provided on the end face of the plug-in end; when the plug-in end is inserted into the claw, the elastic pad abuts against the claw.

[0009] Preferably, the side wall of the plug end is provided with a locking groove, and the claw is provided with locking teeth, which can be locked into the locking groove.

[0010] Preferably, a buffer groove is provided on the end face of the plug-in end, and the elastic pad is inserted into the buffer groove; when the claw and the pin connecting rod are subjected to opposing forces, the plug-in end can deform inward toward the buffer groove.

[0011] Preferably, the locking assembly includes an elastic element that abuts against the movable locking sleeve.

[0012] Preferably, the locking assembly includes a dust cover, which is fitted onto the outside of the movable locking sleeve, and the inner wall of the dust cover slides in engagement with the outer wall of the movable locking sleeve.

[0013] Preferably, the releasable locking device for the seatbelt buckle further includes a controller, and the miniature gas generator is communicatively connected to the controller.

[0014] Preferably, the latch is configured as a movable latch, which includes two unit latches rotatably disposed on the seat belt buckle, and the two unit latches are disposed opposite to each other; the pin connecting rod is connected to the fixing member.

[0015] Preferably, the claw is configured as a fixed claw, the fixed claw is connected to the fixing member, the fixed claw is provided with a insertion groove, the insertion groove is adapted to the insertion end of the pin connecting rod; the pin connecting rod is connected to the seat belt buckle.

[0016] The releasable locking device for seat belt buckles provided by the present invention has at least the following beneficial effects:

[0017] The releasable locking device for seat belt buckles includes a releasable locking mechanism. In use, the seat belt buckle is connected to the seat belt, and the fastener is connected to the fixing point of the vehicle seat. The releasable locking mechanism is used for the detachable connection of the seat belt buckle and the fastener.

[0018] The releasable locking mechanism includes a first connector, a second connector, and a locking assembly. The locking assembly includes a driving mechanism that drives the locking member to the locking member. In actual use, the first connector and the second connector are connected, and the locking member moves to the locking position. At this time, the first connector and the second connector are locked in the connected state, and the safety protection effect of the seat belt is significant. When an accident occurs and the seat belt needs to be opened, the driving mechanism drives the locking member to slide away from the locking position. At this time, the first connector and the second connector are unlocked and disengaged from each other, thereby ensuring that the seat belt can be easily disconnected.

[0019] This invention connects the seat belt buckle and the fastener through a releasable locking mechanism. While ensuring the safety of the seat belt, it can promptly release the locking state of the first and second connecting parts when a vehicle accident occurs, thereby disconnecting the seat belt buckle from the fastener and enabling the occupants of the accident to escape quickly. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 and Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0022] Figure 3 This is a cross-sectional schematic diagram of Embodiment 1 of the present invention;

[0023] Figure 4 This is a schematic diagram of the movable locking sleeve in the unlocked position according to Embodiment 1 of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the claw and the pin connecting rod in Embodiment 1 of the present invention;

[0025] Figure 6 This is an enlarged view of part A of the present invention;

[0026] Figure 7 This is an enlarged view of part B of the present invention;

[0027] Figure 8 This is a schematic diagram of the deformation of the insertion end of the pin connecting rod in Embodiment 1 of the present invention;

[0028] Figure 9 This is a schematic diagram of the electrical connection between Embodiment 1 of the present invention and the controller;

[0029] Figure 10and Figure 11 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0030] Figure 12 This is a cross-sectional schematic diagram of Embodiment 2 of the present invention;

[0031] Figure 13 This is a schematic diagram of the structure of the claw and the pin connecting rod in Embodiment 2 of the present invention.

[0032] Figure Labels

[0033] 1. Seat belt buckle; 2. Fixing component; 21. Fixing hole; 22. Limiting mechanism; 23. Mounting block; 3. Claw; 31. Movable claw; 311. Unit claw; 3111. Engaging tooth; 32. Fixed claw; 321. Insertion groove; 4. Pin connecting rod; 41. Elastic pad; 42. Buffer groove; 43. Engaging groove; 5. Locking assembly; 51. Movable locking sleeve; 511. Top plate; 52. Miniature gas generator; 53. Top block; 54. Thrust chamber; 55. Elastic component; 56. Dust cover; 6. Controller. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0035] Example 1:

[0036] This invention provides a releasable locking device for a seatbelt buckle, see reference. Figure 1 As shown, the releasable locking device for seat belt buckles includes a releasable locking mechanism for connecting seat belt buckle 1 and fastener 2. Seat belt buckle 1 is connected to the seat belt, and the end of fastener 2 is provided with a fixing hole 21, which is connected and fixed to the fixing point of the vehicle seat.

[0037] The releasable locking mechanism includes a first connector, a second connector, and a locking assembly 5. The locking assembly 5 includes a locking member and a drive mechanism that is tractively connected to the locking member. The locking member is movable, and the drive mechanism provides the moving power for the locking member.

[0038] In use, the first connector is connected to the second connector, and the locking member moves to the locking position. At this time, the first connector and the second connector are locked in the connected state to maintain the connection of the seat belt.

[0039] When an accident occurs and the seatbelt needs to be quickly disconnected, the drive mechanism is activated, generating power that acts on the locking member, causing it to slide away from the locking position, thereby releasing the locking state of the first connecting member and the second connecting member. After that, the first connecting member and the second connecting member can be disengaged, enabling the accident victim to escape quickly.

[0040] The present invention, through a releasable locking mechanism having a first connector, a second connector, and a locking component 5, can, on the one hand, achieve a firm connection between the seat belt buckle 1 and the fixing component 2, ensuring the safety effect of the seat belt; on the other hand, in the event of an accident, the driving mechanism can promptly move the locking component, thereby quickly releasing the connection and locking state between the first connector and the second connector, enabling the rapid escape of the accident victim.

[0041] Example 2

[0042] Example 2 is based on Example 1:

[0043] like Figures 1-9 As shown, the first connecting member is configured as a claw 3, and the second connecting member is configured as a pin connecting rod 4. The pin connecting rod 4 is inserted and engaged with the claw 3. The driving mechanism includes a micro gas generator 52, which is capable of releasing gas.

[0044] The locking element is configured as a movable locking sleeve 51, which is adapted to the claw 3.

[0045] In use, the claw 3 is inserted into the pin connecting rod 4, and the movable locking sleeve 51 moves and is fitted onto the outside of the claw 3, thereby effectively limiting the relative position of the claw 3 and the pin connecting rod 4 and realizing the locking of the two in the inserted state.

[0046] When an accident occurs and the seatbelt needs to be quickly disconnected, the miniature gas generator 52 is activated, generating gas. The gas thrust acts on the movable locking sleeve 51, causing it to slide away from the pawl 3. At this time, the limiting effect is eliminated, and the locking state between the pawl 3 and the pin linkage 4 is released. After that, the pawl 3 can be disengaged from the pin linkage 4, enabling the accident victim to escape quickly.

[0047] As an optional implementation, the claw 3 is configured as a movable claw 31, which includes two unit claws 311 hinged to the seat belt buckle 1, and the two unit claws 311 are arranged opposite to each other.

[0048] The pin connecting rod 4 is connected to the fixing part 2 and is integrally set.

[0049] The movable locking sleeve 51 is fitted onto the pin connecting rod 4 and slides in cooperation with the pin connecting rod 4.

[0050] During connection, the insertion end of the pin connecting rod 4 is inserted between the two unit claws 311. The two unit claws 311 rotate towards each other and clamp on both sides of the insertion end of the pin connecting rod 4. After clamping in place, the movable locking sleeve 51 moves and is fitted onto the outside of the two unit claws 311, locking the position.

[0051] The movable locking sleeve 51 can firmly limit the two unit claws 311 to the clamping state, thereby effectively locking the pin link 4 and the claw 3 to the plugging state, ensuring the connection between the pin link 4 and the claw 3 is firm.

[0052] As an optional implementation, a top block 53 is provided inside the movable locking sleeve 51. The top block 53 is fixed to the pin connecting rod 4 by a fixing plate. The outer wall of the top block 53 is sized to match the inner wall of the movable locking sleeve 51. The movable locking sleeve 51 can move relative to the top block 53. The thrust surface of the top block 53 and the inner wall of the movable locking sleeve 51 form a closed thrust cavity 54. The micro gas generator 52 is fixedly mounted on the movable locking sleeve 51.

[0053] When an accident occurs and personnel need to be quickly evacuated, the miniature gas generator 52 is activated, releasing gas into the thrust chamber 54. At this time, the gas expands, and the movable locking sleeve 51 slides away from the two unit claws 311 under the action of gas thrust, thereby releasing the locking state between the claw 3 and the pin connecting rod 4.

[0054] As an optional implementation, the two ends of the pin connecting rod 4 are respectively configured as a connecting end and a plug-in end. The connecting end is connected to the fixing member 2, and an elastic pad 41 is provided on the end face of the plug-in end.

[0055] When the plug-in end is inserted into the claw 3, the elastic pad 41 abuts against the claw 3, and the elastic pad 41 has a certain buffering effect.

[0056] As an optional implementation, the two opposite sidewalls of the plug end are provided with engagement grooves 43, and the unit claw 311 is provided with engagement teeth 3111. The engagement grooves 43 are inclined away from the groove wall of the connecting end, and the engagement teeth 3111 are adapted to them.

[0057] When the claw 3 is inserted into the pin connecting rod 4, the two locking teeth 3111 respectively engage into the corresponding locking grooves 43.

[0058] As an optional implementation, a buffer groove 42 is provided on the end face of the plug-in end, and the mounting end of the elastic pad 41 is shaped to match the buffer groove 42, and the mounting end of the elastic pad 41 is inserted into the buffer groove 42.

[0059] Most passenger cars currently use pre-tensioned seat belts in the front row. When an accident occurs, the seat belt will automatically tighten. If the tightening force is too great, the seat belt may not be able to release properly.

[0060] The present invention uses the elastic pad 41 and the buffer groove 42. In the event of an accident, if the tightening force is too large, the claw 3 and the pin connecting rod 4 will generate excessive opposing forces. Under the action of the opposing forces, the plug end deforms inward toward the buffer groove 42 and squeezes the mounting end of the elastic pad 41. This can effectively buffer the tightening force of the seat belt, protect the seat belt buckle, and prevent the buckle from being unable to disengage.

[0061] As an optional implementation, the locking assembly 5 includes an elastic element 55, which is a spring. The spring is sleeved on the outside of the fixing member 2. The fixing member 2 is provided with a mounting block 23. The two ends of the elastic element 55 abut against the movable locking sleeve 51 and the mounting block 23, respectively.

[0062] During actual use of the seat belt, the elastic force provided by the elastic element 55 acts on the movable locking sleeve 51, so that the movable locking sleeve 51 is stably fitted onto the outside of the claw 3, preventing the movable locking sleeve 51 from moving, and making the locking state between the movable locking sleeve 51 and the claw 3 more stable.

[0063] Alternatively, a limiting mechanism 22 is provided on the fixing member 2. When the movable locking sleeve 51 completely slides away from the pawl 3, the limiting mechanism 22 can limit the relative position of the movable locking sleeve 51, preventing it from jamming the pawl 3 again and causing release failure, thus ensuring the disengagement effect of the pawl 3 and the pin connecting rod 4.

[0064] The limiting mechanism 22 can be configured as a limiting block.

[0065] As an optional implementation, the locking assembly 5 includes a dust cover 56, which is fitted onto the outside of the movable locking sleeve 51 and connected to the mounting block 23. The inner wall of the dust cover 56 slides in cooperation with the outer wall of the movable locking sleeve 51.

[0066] The dust cover 56 mainly serves a protective function, ensuring the service life of the components.

[0067] As an optional implementation, the releasable locking device for the seat belt buckle further includes a controller 6, and the micro gas generator 52 is electrically connected to the controller 6 via a wire. The controller 6 is used to control the micro gas generator 52.

[0068] Example 2 has a releaseable locking mechanism that is a movable claw type locking mechanism.

[0069] Example 3:

[0070] The difference between Example 3 and Example 2 is that:

[0071] like Figures 10-13As shown, the claw 3 is configured as a fixed claw 32, which is connected to and integrally formed with the fixing member 2. The fixed claw 32 is provided with a insertion groove 321, which is adapted to the insertion end of the pin connecting rod 4. The locking teeth are provided at the end of the fixed claw 32.

[0072] The pin linkage 4 is connected to the seat belt buckle 1 and is integrated into the design.

[0073] The movable locking sleeve 51 can be movably fitted onto the fixing member 2.

[0074] In use, the insertion end of the pin connecting rod 4 is inserted laterally into the insertion groove 321, and the movable locking sleeve 51 moves and is fitted onto the outside of the fixed claw 32, thereby locking the claw 3 and the pin connecting rod 4 into the insertion state.

[0075] In the event of an accident and when the seatbelt needs to be quickly disconnected, the movable locking sleeve 51 slides away from the fixed claw 32 under the action of the miniature gas generator 52, thereby releasing the locking state between the claw 3 and the pin connecting rod 4. After that, the insertion end of the pin connecting rod 4 can be disengaged from the insertion groove 321.

[0076] As an optional implementation, the movable locking sleeve 51 is connected with a top piece 511, which abuts against the pin connecting rod 4.

[0077] The top plate 511 has the function of assisting in release. When the movable locking sleeve 51 completely slides away from the fixed claw 32, the insertion end of the pin connecting rod 4 is dislodged from the insertion groove 321 under the action of the abutment force of the top plate 511.

[0078] Example 2 has an embedded locking mechanism that can be released.

[0079] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", etc., indicate the orientation or 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. Therefore, they should not be construed as limitations on this application.

[0080] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0081] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0082] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A releasable locking device for a seatbelt buckle, characterized in that, Includes a releasable locking mechanism for detachably connecting a seatbelt buckle and a fastener, the releasable locking mechanism comprising a first connector, a second connector, and a locking assembly, wherein: The first connector and the second connector are detachably connected; The locking assembly includes a locking member and a driving mechanism pulsatorically connected to the locking member. The locking member can move to a locking position to lock the first connecting member and the second connecting member into a connected state. The driving mechanism can drive the locking member to slide away from the locking position to disengage the first connecting member and the second connecting member. The first connecting member is configured as a claw, the second connecting member is configured as a pin connecting rod, and the locking member is configured as a movable locking sleeve. The claw can be inserted into the pin connecting rod. The movable locking sleeve can be moved and fitted onto the outside of the claw to lock the claw and the pin connecting rod into the inserted state. The driving mechanism can drive the movable locking sleeve to slide away from the claw so that the claw disengages from the pin connecting rod.

2. The releasable locking device for a seatbelt buckle according to claim 1, characterized in that, The drive mechanism includes a miniature gas generator, which can drive the movable locking sleeve to slide away from the pawl, so that the pawl disengages from the pin connecting rod.

3. The releasable locking device for a seatbelt buckle according to claim 2, characterized in that, The movable locking sleeve is provided with a top block, and the movable locking sleeve can move relative to the top block. The thrust surface of the top block and the inner wall of the movable locking sleeve form a thrust cavity. The miniature gas generator is fixedly mounted on the movable locking sleeve and can release gas into the thrust chamber, so that the movable locking sleeve slides away from the chuck under the action of gas thrust.

4. The releasable locking device for a seatbelt buckle according to claim 2, characterized in that, The two ends of the pin connecting rod are respectively configured as a connecting end and a plug-in end, and an elastic pad is provided on the end face of the plug-in end; When the plug-in end is inserted into the claw, the elastic pad abuts against the claw.

5. The releasable locking device for a seatbelt buckle according to claim 4, characterized in that, The side wall of the plug end is provided with a locking groove, and the claw is provided with locking teeth, which can be locked into the locking groove.

6. The releasable locking device for a seatbelt buckle according to claim 4, characterized in that, A buffer groove is provided on the end face of the plug-in end, and the elastic pad is inserted into the buffer groove; When the claw and the pin connecting rod are subjected to opposing forces, the insertion end can deform in the direction of the buffer groove.

7. The releasable locking device for a seatbelt buckle according to claim 2, characterized in that, The locking assembly includes an elastic element that abuts against the movable locking sleeve.

8. The releasable locking device for a seatbelt buckle according to claim 2, characterized in that, The locking assembly includes a dust cover, which is fitted onto the outside of the movable locking sleeve, and the inner wall of the dust cover slides in engagement with the outer wall of the movable locking sleeve.

9. The releasable locking device for a seatbelt buckle according to claim 2, characterized in that, The releasable locking device for the seatbelt buckle also includes a controller, and the miniature gas generator is communicatively connected to the controller.

10. The releasable locking device for a seatbelt buckle according to any one of claims 2-9, characterized in that, The latch is configured as a movable latch, and the movable latch includes two unit latches that are rotatably disposed on the seat belt buckle, with the two unit latches disposed opposite to each other. The pin connecting rod is connected to the fixing member.

11. The releasable locking device for a seatbelt buckle according to any one of claims 2-9, characterized in that, The claw is configured as a fixed claw, the fixed claw is connected to the fixing member, and the fixed claw is provided with a insertion groove, which is adapted to the insertion end of the pin connecting rod; The pin linkage is connected to the seat belt buckle.

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