Double-end Isofix interface connector

Abstract

The utility model discloses a double-end Isofix interface connector, comprising an installation housing, two ends of which are provided with crocodile mouths; the lock heads are hinged to the two ends of the mounting shell; the pair of connecting pieces can be respectively linked with the corresponding lock heads; the unlocking operation piece is provided with a pair of operation rods which are used for respectively controlling the connecting pieces corresponding to the unlocking operation piece during unlocking; when the lock head at one end is changed from the unlocking position to the locking position, the connecting piece corresponding to the lock head is linked to abut against the lock head for locking, the lock head at the other end is still located at the unlocking position, and at the moment, the connector is in a using state. When the lock head at the locking position needs to be changed into the unlocking position, the unlocking operation piece is operated to enable the operation rod to control the connecting piece corresponding to the operation rod to be linked with the lock head so as to cancel locking of the lock head, the lock head at the other end is still located at the unlocking position, and at the moment, the connector is in a non-use state. The device is simple in structure, easy to operate, convenient to use and high in overall structural stability and safety.

Description

Technical Field

[0001] The utility model relates to a double-headed Isofix interface connector. Background Art

[0002] With the popularization of safety awareness, people's demand for vehicle safety seats is increasing. When choosing a safety seat, parents not only have requirements for the safety performance of the seat, but also pay more attention to its functional mode and service life. For this reason, full-group safety seats have emerged. The full-group safety seats can not only meet the needs of rearward installation of safety seats for infants aged 0-1 year, but also meet the needs of forward installation of safety seats for children aged 1-12 years. In order to be able to meet forward and rearward installations at the same time, existing full-group safety seats are mostly split-type, which includes a base and a seat body installed on the base. The base is fixed to the vehicle seat through Isofix, and the seat body suitable for different age groups is switched to meet the needs of children in the full group. However, since the seat body and the base of the split-type full-group seat are independent of each other, the overall volume of the safety seat is large, the weight is heavy, and it is very inconvenient to carry and operate.

[0003] In order to overcome the above defects, an Isofix connector that can achieve forward and backward installation of an integrated safety seat has emerged. For example, the Chinese authorized utility model patent (CN201310432424.0) discloses a frontward and backward dual-purpose vehicle seat fixing device, which includes a frame provided with a sliding guide rail, two locking parts that can slide along the sliding guide rail arranged at both ends of the frame, and two operating rods for respectively controlling the locking parts. The arrangement of the two locking parts can realize the frontward and backward installation of the integrated safety seat. Considering that the vehicle seat sizes of different brands of automobiles are different, the position of the locking part can be adjusted by sliding it to different positions on the sliding guide rail, and the fixing or sliding of the locking part relative to the sliding guide rail is respectively controlled by two operating rods, that is, each locking part is controlled by an operating rod. Thus, the following defects exist in this vehicle seat fixing device:

[0004] ⑴ Each locking part is controlled by an operating rod, with a complex structure, cumbersome operation, and inconvenient use.

[0005] ⑵ The two locking parts are independently arranged on the frame and can slide along the guide rail of the frame respectively. Each locking part is fixed by inserting a support rod into the spaced sliding holes of the sliding guide rail to position the relative position of this side of the locking part and the vehicle seat, with inconvenient operation. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a double-headed Isofix interface connector with a simple structure, simple operation, and convenient use.

[0007] The purpose of the utility model is achieved by the following technical measures: a double-headed Isofix interface connector, characterized in that it includes:

[0008] Install the housing with alligator mouths at both ends;

[0009] A pair of lock heads are hinged at two ends of the mounting housing, and the pair of lock heads have a locking position for engaging with the locking rod of the car seat to close the crocodile mouth and an unlocking position for canceling the engagement to open the crocodile mouth;

[0010] A pair of connecting members are located in the mounting housing and between the pair of lock heads, and can be linked with the corresponding lock heads respectively;

[0011] An unlocking operating member, which is disposed on the mounting housing and has a pair of operating rods for respectively controlling corresponding connecting members when unlocking;

[0012] When the lock head at one end changes from the unlocked position to the locked position, the connecting piece corresponding to the lock head is linked to contact the lock head to lock, and the lock head at the other end is still in the unlocked position. At this time, the connector is in use;

[0013] When the lock head in the locked position needs to be changed to the unlocked position, the unlocking operating member is operated to make the operating rod control the corresponding connecting member and the lock head to cancel the lock, and the lock head at the other end is still in the unlocked position. At this time, the connector is in a non-use state.

[0014] The pair of connectors of the utility model both have positioning structures for limiting the relative position of the connector and the child seat when in use;

[0015] When the connector is not in use, both positioning structures are in a positioning state;

[0016] In a non-use state, the unlocking operating member is operated to allow the two operating rods to control the corresponding connecting members to release the positioning state of the two positioning structures, and the position of the child seat relative to the connector can be adjusted at this time;

[0017] When the connector changes from a non-use state to a use state, that is, when the lock head at one end changes from an unlocked position to a locked position, the positioning state of the positioning structure on the corresponding connecting piece is released, and at the same time, the positioning structure on the connecting piece corresponding to the lock head at the other end remains in a positioning state.

[0018] For this utility model, the pair of connectors are respectively in the first position and the second position when the corresponding lock heads are in the unlocked position and the locked position, and respectively abut against the first part and the second part of the lock head. The connectors and the corresponding lock heads are connected by a tension spring. When the lock head changes between the unlocked position and the locked position, the connectors are pulled by the tension spring and linked to change between the first position and the second position and respectively abut against the first part and the second part of the lock head.

[0019] For this utility model, the lock head is a sheet body. The outer side of the lock head has an opening for accommodating the lock rod of the vehicle seat. The bottom of the opening has a protrusion for cooperating with the lock rod of the vehicle seat. The outer end of the opening is a hook portion bent inward. The inner bottom of the lock head has a recess and a convex portion above the recess. The convex portion is the first part of the lock head, and the recess is the second part of the lock head.

[0020] For this utility model, the connector is a rod member, which is composed of an arc rod section, a cross bar section and a special-shaped groove connected in sequence. The outer end of the arc rod section abuts against the first part and the second part of the lock head. Each operating rod is adapted to pass through the special-shaped groove of the corresponding connector. The operating rod has a third position and a fourth position relative to the special-shaped groove. When the lock head is in the unlocked position and the locked position respectively, the operating rod is in the third position and the fourth position in the special-shaped groove.

[0021] For this utility model, the special-shaped groove is an inclined groove. The bottom end of the special-shaped groove is the third position, and the upper part of the special-shaped groove is the fourth position. When the connector changes from the first position to the second position, the corresponding operating rod slides from the bottom end to the upper part relative to the special-shaped groove.

[0022] For this utility model, the positioning structure is a block provided on the top surface of the transverse rod section of the connector. The inner side edge of the block is a vertical surface, and the outer side edge is an inclined surface. A long strip-shaped opening corresponding to the block is provided on the top surface of the installation housing. The positioning state of the block is that the block passes through the opening and is clamped in the clamping hole provided on the vehicle seat. The release of the positioning state of the block means that the block disengages from the clamping hole.

[0023] The unlocking operation member of the utility model comprises a base body, a first button body and a second button body arranged on the base body, the first button body and the second button body respectively having an operating rod, and two pairs of opposite long strip sliding holes are arranged on the two side walls of the mounting shell, each operating rod extends into a pair of sliding holes and can move along the sliding holes, when the lock head is in the unlocking position and the locking position, the corresponding operating rod is at the outer end of the sliding hole, and when the lock head at one end needs to be changed from the locking position to the unlocking position, the unlocking operation member is operated to control the operating rod corresponding to the lock head to move from the outer end of the sliding hole to the inner end, and at the same time drive the connecting member to cancel the resistance to the lock head and release the lock, and at the same time control the other operating rod to move from the outer end of the sliding hole to the inner end and move along the oblique side of the special-shaped groove to press the connecting member downward to make the clamping block disengage from the clamping hole, at this time, the position of the child seat relative to the connector can be adjusted, and after the force on the unlocking operation member is canceled, the two operating rods move from the inner end of the sliding hole to the outer end, and at the same time the connecting member is pulled by the tension spring to move to the first position.

[0024] The length of the opening on the mounting shell of the utility model satisfies the displacement stroke of the card block in the opening when the lock head is changed from an unlocked state to a locked state, at which time the card block moves to the outer end of the opening, and at the same time satisfies the displacement stroke of the card block in the opening when the operating lever moves from the fifth position to the sixth position during the process of the lock head being changed from a locked state to an unlocked state, at which time the card block moves to the inner end of the opening.

[0025] The utility model has a fixing frame fixed on the child seat installed on the outside of the connector, the top surface of the fixing frame has a card hole, and the connector can slide in the fixing frame along the arrangement direction of the card hole, or the connector is slidably installed in the fixing frame arranged on the child seat, the top surface of the fixing frame has a card hole, and the connector can slide along the arrangement direction of the card hole.

[0026] The utility model provides two pairs of upper and lower limit blocks on the inner side wall of the installation shell, the arc-shaped rod section of each connecting member passes through a pair of limit blocks, and the spacing between the pair of limit blocks is greater than the width of the arc-shaped rod section, so as to provide a vertical displacement space for the connecting member when it changes between the first position and the second position.

[0027] Compared with the prior art, the utility model has the following significant effects:

[0028] ⑴ The two groups of locks and connecting parts of the utility model are located in an installation shell and are connected by an unlocking operating part to form an integral component. When the connector is in use, the unlocking operating part can be operated to control the operating rod and the corresponding connecting part to unlock the lock, thereby realizing the locking and unlocking of the two locks. The utility model has a simple structure, is easy to operate, and is convenient to use.

[0029] ⑵ When the connector of the present utility model is in use, one of the lock heads is in the locked state, the positioning state of the positioning structure on the corresponding connecting member is released, and the positioning structure on the connecting member corresponding to the other lock head is in the positioning state. The positioning structure adopts a block with a vertical inner side surface and an inclined outer side surface, so that the child seat cannot move away from the vehicle seat, ensuring safety during use.

[0030] ⑶ As an integral component, by operating the unlocking operating member, the present utility model can control the release of the positioning state of the positioning structures on the two connecting members, enabling the connector to move relative to the child seat to adjust the relative position between the child seat and the vehicle seat, so that the present utility model can be applicable to different models of vehicle seats, and the adjustment operation is convenient and fast.

[0031] ⑷ The unlocking, locking of the lock head of the present utility model and the adjustment of the relative position between the connector and the child seat operate smoothly, and the overall structure has strong stability and safety, being suitable for wide promotion and use. Description of the Drawings

[0032] The following further elaborates on the present utility model in conjunction with the drawings and specific embodiments.

[0033] Figure 1 is the three-dimensional structural schematic diagram of the present utility model (with a fixed frame and in the non-use state);

[0034] Figure 2 is one of the three-dimensional structural sectional views of the present utility model (with a fixed frame and in the non-use state);

[0035] Figure 3 is one of the front sectional views of the present utility model (with a fixed frame and in the non-use state);

[0036] Figure 4 is the top sectional view of the present utility model (with a fixed frame and in the non-use state);

[0037] Figure 5 is the second of the three-dimensional structural sectional views of the present utility model (without a fixed frame and in the non-use state);

[0038] Figure 6 is the second of the front sectional views of the present utility model (without a fixed frame and in the non-use state);

[0039] Figure 7 is the third of the three-dimensional structural sectional views of the present utility model (with a fixed frame and in the use state);

[0040] Figure 8 is the third of the front sectional views of the present utility model (with a fixed frame and in the use state);

[0041] Figure 9 is the fourth cross-sectional view of the three-dimensional structure of the present utility model (with a fixed frame and in the unlocking process);

[0042] Figure 10 is the fourth front cross-sectional view of the present utility model (with a fixed frame and in the unlocking process);

[0043] Figure 11 is one of the cross-sectional views of the unlocking operating member of the present utility model (in the non-operated state);

[0044] Figure 12 is the second cross-sectional view of the unlocking operating member of the present utility model (in the operated state);

[0045] Figure 13 is the exploded schematic view of the unlocking operating member of the present utility model. Detailed implementation manners

[0046] As Figures 1 to 13 shown, the present utility model is a double-headed Isofix interface connector, which is used to connect a child seat to an automobile seat. The connector includes an installation housing 1, a pair of lock heads 2, a pair of connecting members 3 and an unlocking operating member 4. The installation housing 1 is a long and flat housing, and both ends thereof have alligator jaws 11; the pair of lock heads 2 are hinged at both ends of the installation housing 1, and each has a locking position for engaging with a lock rod of an automobile seat to close the alligator jaws 11 and an unlocking position for canceling the engagement to open the alligator jaws 11; the pair of connecting members 3 are located in the installation housing 1 and between the pair of lock heads 2, and can be respectively linked with the corresponding lock heads 2; the unlocking operating member 4 is arranged on the installation housing 1, and has a pair of operating rods 41 for respectively controlling the corresponding connecting members 3 during unlocking.

[0047] When the lock head 2 at one end changes from the unlocking position to the locking position, the connecting member 3 corresponding to the lock head 2 is linked to abut against the lock head 2 for locking. The lock head 2 at the other end remains in the unlocking position. At this time, the connector is in the use state; when the lock head 2 in the locking position needs to change to the unlocking position, the operating rod 41 controls the corresponding connecting member 3 and the lock head 2 to be linked to cancel the locking thereof by operating the unlocking operating member 4. The lock head at the other end remains in the unlocking position. At this time, the connector is in the non-use state.

[0048] The pair of connecting members 3 are respectively in the first position and the second position when the corresponding lock heads 2 are in the unlocking position and the locking position, and respectively abut against the first part 21 and the second part 22 of the lock head 2. The connecting member 3 and the corresponding lock head 2 are connected by a tension spring 5. When the lock head 2 changes between the unlocking position and the locking position, the connecting member 3 is pulled by the tension spring 5 to be linked to change between the first position and the second position and respectively abut against the first part 21 and the second part 22 of the lock head 2.

[0049] The lock head 2 is a sheet body with an irregular shape. The outer side of the lock head 2 has an opening 23 for accommodating the lock rod of the vehicle seat. The bottom of the opening 23 has a protrusion 24 for cooperating with the lock rod of the vehicle seat. When the lock rod of the vehicle seat abuts against the protrusion 24 at one end of the lock head 2, since the protrusion 24 is an arc surface and acts similar to a cam, the lock head 2 rotates around the hinge point 6 so that the lock head is in the locked position. The outer end of the opening 23 is a hook portion 25 bent inward, so that the opening is approximately in a 7 - shape. When the lock head is closed, the hook portion 25 forms a closure with the alligator mouth 11 of the mounting housing, fastening the lock rod of the vehicle seat in the opening 23 of the lock head. The inner bottom of the lock head 2 has a recess, and above the recess is a convex portion, which is the first part 21 of the lock head 2, and the recess is the second part 22 of the lock head 2.

[0050] Each of the pair of connecting members 3 has a positioning structure 31 for defining the relative position between the connector and the child seat. When the connector is in the non - use state, both positioning structures are in the positioning state, that is, the child seat is not allowed to move relative to the connector; in the non - use state, by operating the unlocking operating member, the two operating rods control the corresponding connecting members to release the positioning state of the two positioning structures. At this time, the position of the child seat relative to the connector can be adjusted; when the connector changes from the non - use state to the use state, that is, when the lock head at one end changes from the unlocked position to the locked position, the positioning state of the positioning structure on the corresponding connecting member is released. At the same time, the positioning structure on the connecting member corresponding to the lock head at the other end is still in the positioning state, that is, the child seat is not allowed to move away from the connector.

[0051] In this embodiment, the connecting member 3 is a rod, which is composed of an arc - shaped rod segment 32, a cross - bar segment 33 and a special - shaped groove 34 connected in sequence. The outer end of the arc - shaped rod segment 32 abuts against the first part 21 and the second part 22 of the lock head 2. Each operating rod 41 is adapted to pass through the special - shaped groove 34 of the corresponding connecting member 3. The operating rod 41 has a third position and a fourth position relative to the special - shaped groove 34. When the lock head 2 is in the unlocked position and the locked position respectively, the operating rod 41 is in the third position and the fourth position in the special - shaped groove 34. The special - shaped groove 34 in this embodiment is an inclined groove. The bottom end of the special - shaped groove 34 is the third position, and the upper part of the special - shaped groove 34 is the fourth position. When the connecting member 3 is converted from the first position to the second position, the corresponding operating rod 41 slides from the bottom end to the upper part relative to the special - shaped groove 34.

[0052] In this embodiment, the positioning structure 31 is a block provided on the top surface of the cross - bar segment 33 of the connecting member 3. The inner side surface of the block is a vertical surface, and the outer side surface is an inclined surface. On the top surface of the mounting housing 1, there is a long - strip opening 12 corresponding to the block. The positioning state of the block is that the block passes through the opening 12 and is engaged in the locking hole provided on the vehicle seat. The release of the positioning state of the block means that the block disengages from the locking hole.

[0053] See also Figures 11 to 13 The unlocking operating member 4 includes a base body 42, a first button body and a second button body provided on the base body 42, the first button body and the second button body respectively having an operating rod, the first button body including a first button 43, a torsion spring 44 and a first operating rod 41a, and the second button body including a second button 45, a spring 46 and a second operating rod 41b. The first button 43 is rotatably mounted on the base body 42, and the first button 43 has a socket. The second button 45 is slidably mounted on the base body 42, and the second button 45 has a plug-in that matches the socket. One end of the torsion spring 44 is connected to the base body 42, and the other end of the torsion spring 44 is connected to the first button 43, and the torsion spring 44 is used to drive the first button 43 to reset. One end of the spring 46 is connected to the base body 42, and the other end of the spring 46 is connected to the second button 45, and the spring 46 is used to drive the second button 45 to reset. One end of the first operating rod 41a is fixedly mounted on the base body 42, and one end of the second operating rod 41b is fixedly mounted on the second button 45. Two pairs of opposite long sliding holes 13 are provided on the two side walls of the mounting shell 1. Each operating rod 41 extends into a pair of sliding holes 13 and can move along the sliding holes 13. A pair of limiting flanges 47 are provided at the extending end of the operating rod 41 and are located on both sides of the special-shaped groove 34, so that the special-shaped groove 34 is clamped between the two limiting flanges 47. When the lock head 2 is in the unlocked position and the locked position, the corresponding operating rods 41 are both at the outer end of the slide hole 13. When the lock head 2 at one end needs to be changed from the locked position to the unlocked position, the unlocking operating member is operated to control the operating rod 41 corresponding to the lock head to move from the outer end to the inner end of the slide hole 13 and drive the connecting member 3 to cancel the resistance to the lock head 2 and release the lock. At the same time, the other operating rod 41 is controlled to move from the outer end to the inner end of the slide hole 13 and move along the oblique side of the special-shaped groove 34 to press down the connecting member 3 to make the block disengage from the card hole. At this time, the position of the child seat relative to the connector can be adjusted, and after the force on the unlocking operating member is canceled, the two operating rods 41 move from the inner end to the outer end of the slide hole 13, and the connecting member 3 is pulled to the first position by the tension spring 5.

[0054] The length of the opening 12 on the mounting housing 1 satisfies the displacement stroke of the card block in the opening 12 when the lock head 2 changes from the unlocked state to the locked state. At this time, the card block moves to the outer end of the opening 12, and at the same time satisfies the displacement stroke of the card block in the opening 12 when the operating rod 41 moves from the outer end to the inner end of the sliding hole during the process of the lock head 2 changing from the locked state to the unlocked state.

[0055] Two pairs of upper and lower limit blocks 14 are provided on the inner side wall of the mounting shell 1. The arcuate rod segment 32 of each connecting member 3 passes through a pair of limit blocks 14, and the spacing between the pair of limit blocks 14 is greater than the width of the arcuate rod segment 32, so as to provide space for vertical displacement of the connecting member when it changes between the first position and the second position.

[0056] By adjusting the relative position between the connector of the present utility model and the child seat, the present utility model can be adapted to different models of vehicle seats. In this embodiment, a fixing frame 7 that can be fixed on the child seat is externally installed on the connector of the present utility model. The left and right ends of the fixing frame 7 are open, and the top surface of the fixing frame 7 has a plurality of card holes 71. The connector can slide in the fixing frame 7 along the arrangement direction of the card holes 71 and extend out from the left end or the right end of the fixing frame. The connector is fixed in the fixing frame by inserting the card block into the card hole.

[0057] In other embodiments, there is no fixing frame externally installed on the connector of the present utility model. Instead, a fixing frame is provided on the child seat. When in use, the connector of the present utility model is slidably installed in the fixing frame. The top surface of the fixing frame has a plurality of card holes, and the connector can slide along the arrangement direction of the card holes.

[0058] The working principle and usage process of the present utility model are as follows:

[0059] 1. The connector is in the unused state (the lock heads at both ends are in the unlocked position and both card blocks are in the positioned state. At this time, the child seat is not allowed to move relative to the connector): Refer to Figures 1 to 6 When the ISOFIX connector is not connected to the lock rod of the vehicle seat, the lock heads at both ends are in the unlocked position, and both card blocks are in the positioned state. At this time, the card blocks extend into the card holes of the fixing frame; both operating rods are located at the outer ends of the sliding holes, and at the same time, both operating rods are located at the bottom ends of the special-shaped grooves, that is, in the third position in the special-shaped grooves. Since the vertical surfaces of both card blocks are in contact with the inner walls of the corresponding card holes, the connector cannot move left and right in the fixing frame.

[0060] At this time, both connecting members are in the first position and are in contact with the first parts of the corresponding lock heads, that is, in contact with the convex parts of the lock heads.

[0061] 2. The connector is changed from the unused state to the used state (used state: the lock head at one end is in the locked position, and the positioning state of the card block on this side is released. The lock head at the other end is in the unlocked position, and the card block on this side is in the positioned state. At this time, the child seat is not allowed to move away from the connector): Refer to Figure 7 and Figure 8 When the ISOFIX connector is connected to the lock rod of the vehicle seat, the ISOFIX connector is switched from the unused state to the used state. Taking the left lock head of the ISOFIX connector being buckled with the lock rod of the vehicle seat as an example:

[0062] The locking lever presses against the protrusion of the lock head, causing the lock head to rotate counterclockwise. Under the pulling force of the tension spring, the connecting piece slides into the recess. At the same time, the locking block is pressed downward by the wall of the locking hole and slides out of the locking hole. When the locking block moves downward, the whole rear end of the connecting piece moves downward, and the special-shaped groove also moves downward accordingly. The operating rod then slides relative to the special-shaped groove to its upper part, and the operating rod is still at the left end of the sliding hole.

[0063] Meanwhile, the lock head at the right end is still in the unlocked position, the locking block still extends into the locking hole, and the operating rod is still at the right end of the sliding hole and at the bottom of the special-shaped groove. Since the left end of the locking hole abuts against the vertical surface of the locking block, the connector cannot move to the left within the fixing frame, that is to say, the child seat is not allowed to move away from the vehicle locking lever. However, since the right end of the locking hole abuts against the inclined surface of the locking block, the locking block can be disengaged from the locking hole, so the connector can move to the right within the fixing frame, that is to say, the child seat is allowed to move closer to the locking lever. In this way, the gap between the lock head and the seating surface of the vehicle seat is shortened, that is, the distance between the backrest of the child seat and the seating surface of the vehicle seat is shortened.

[0064] 3. Transformation of the connector from the used state to the unused state: Refer to Figure 9 and Figure 10 , when it is necessary to unlock the ISOFIX connector from the locking lever of the vehicle seat, the ISOFIX connector is switched from the used state to the unused state. Taking the release of the buckle between the lock head at the left end and the locking lever as an example:

[0065] First, pull the first button of the unlocking operating member outward to rotate, so that the jack is aligned with the plug of the second button; then, push the second button inward to move. The plug of the second button will be inserted into the jack, and at the same time drive the second operating rod and the first operating rod to move relative to each other (the first operating rod moves relative to the second button along with the seat body). Among them, the second operating rod moves from the right end of the sliding hole to the left end. The movement of the second operating rod will drive the displacement of the connecting piece (because the second operating rod contacts the hypotenuse of the special-shaped groove, so when the second operating rod slides horizontally to the left, the connecting piece will move downward), so that the locking block is disengaged from the locking hole. At this time, the second operating rod moves to the upper part of the special-shaped groove; at the same time, the first operating rod will also move from the left end of the sliding hole to the right end (the first operating rod is still at the upper part of the special-shaped groove), thereby driving the connecting piece to move to the right, so that the connecting piece is disengaged from the recess of the lock head. At this time, under the pulling force of the tension spring, the lock head rotates clockwise, and the lock head is separated from the locking lever to complete the unlocking; at this time, both locking blocks are disengaged from the locking holes, and the positioning state is released.

[0066] Finally, release the first button and the second button. Under the action of the spring and the torsion spring, the first button and the second button return to their original positions, so that the first operating rod and the second operating rod return to their original positions. The two connecting pieces also return to the first position under the restoring force of the tension spring. The two locking blocks extend into the locking holes again, and the ISOFIX connector is transformed from the used state to the unused state. At this time, the two locking blocks are in the positioning state.

[0067] 4. Adjust the relative position between the connector and the child seat: When the connector is in the used state and the non-used state, the position of the connector in the fixed frame can be adjusted by simultaneously squeezing the first button and the second button on both sides.

Claims

1. A double-headed Isofix interface connector, characterized in that include: Install the housing with alligator mouths at both ends; A pair of lock heads are hinged at two ends of the mounting housing, and the pair of lock heads both have a locking position for engaging with a locking rod of the car seat to close the crocodile mouth and an unlocking position for canceling the engagement to open the crocodile mouth; A pair of connecting members are located in the mounting housing and between the pair of lock heads, and can be linked with the corresponding lock heads respectively; An unlocking operating member, which is disposed on the mounting housing and has a pair of operating rods for respectively controlling corresponding connecting members when unlocking; When the lock head at one end changes from the unlocked position to the locked position, the connecting piece corresponding to the lock head is linked to contact the lock head to lock, and the lock head at the other end is still in the unlocked position. At this time, the connector is in use; When the lock head in the locked position needs to be changed to the unlocked position, the unlocking operating member is operated to make the operating rod control the corresponding connecting member and the lock head to cancel the lock, and the lock head at the other end is still in the unlocked position. At this time, the connector is in a non-use state.

2. The double-headed Isofix interface connector according to claim 1, characterized in that: The pair of connectors both have positioning structures for limiting the relative positions of the connector and the child seat; When the connector is not in use, both positioning structures are in a positioning state; In a non-use state, the unlocking operating member is operated to allow the two operating rods to control the corresponding connecting members to release the positioning state of the two positioning structures, and the position of the child seat relative to the connector can be adjusted at this time; When the connector changes from a non-use state to a use state, that is, when the lock head at one end changes from an unlocked position to a locked position, the positioning state of the positioning structure on the corresponding connecting piece is released, and at the same time, the positioning structure on the connecting piece corresponding to the lock head at the other end remains in a positioning state.

3. The double-headed Isofix interface connector according to claim 2, wherein: The pair of connecting members are in the first position and the second position when the corresponding lock head is in the unlocked position and the locked position, and respectively abut against the first part and the second part of the lock head. The connecting member and the corresponding lock head are connected by a tension spring. When the lock head changes between the unlocked position and the locked position, the connecting member is pulled by the tension spring to change between the first position and the second position in linkage and respectively abut against the first part and the second part of the lock head.

4. The double-headed Isofix interface connector according to claim 3, characterized in that: The lock head is a sheet-like body, and the outer side of the lock head has an opening for accommodating the car seat lock rod, the bottom of the opening has a protrusion for cooperating with the car seat lock rod, the outer end of the opening is a hook portion bent inward, the inner bottom of the lock head has a recess and above the recess is a convex portion, the convex portion is the first part of the lock head, and the recess is the second part of the lock head.

5. The double-headed Isofix interface connector according to claim 4, characterized in that: The connecting member is a rod member, which consists of an arc-shaped rod segment, a cross rod segment and a special-shaped groove connected in sequence. The outer end of the arc-shaped rod segment abuts against the first part and the second part of the lock head. Each operating rod is adapted to pass through the special-shaped groove of the corresponding connecting member. The operating rod has a third position and a fourth position relative to the special-shaped groove. When the lock head is in the unlocking position and the locking position respectively, the operating rod is in the third position and the fourth position in the special-shaped groove.

6. The double-headed Isofix interface connector according to claim 5, characterized in that: Two pairs of upper and lower limit blocks are provided on the inner side wall of the mounting shell, and the arc-shaped rod segment of each connecting member passes through a pair of limit blocks, and the spacing between the pair of limit blocks is greater than the width of the arc-shaped rod segment, so as to provide space for vertical displacement of the connecting member when it changes between the first position and the second position.

7. The double-headed Isofix interface connector according to claim 6, characterized in that: The special-shaped groove is an inclined groove, the bottom end of the special-shaped groove is the third position, and the upper part of the special-shaped groove is the fourth position. When the connecting member changes from the first position to the second position, the corresponding operating rod slides from the bottom end to the upper part relative to the special-shaped groove.

8. The double-headed Isofix interface connector according to claim 7, characterized in that: The positioning structure is a block arranged on the top surface of the transverse rod section of the connecting piece, the inner side surface of the block is a vertical surface, and the outer side surface is an inclined surface. A long strip opening corresponding to the block is provided on the top surface of the mounting shell. The positioning state of the block is that the block passes through the opening and is engaged in the card hole provided on the car seat. The positioning state of the block is released when the block is separated from the card hole.

9. The double-headed Isofix interface connector according to claim 8, characterized in that: The unlocking operation member includes a base body, a first button body and a second button body arranged on the base body, the first button body and the second button body respectively having an operating rod, and two pairs of opposite long strip sliding holes are arranged on the two side walls of the mounting shell, each operating rod extends into a pair of sliding holes and can move along the sliding holes, when the lock head is in the unlocking position and the locking position, the corresponding operating rod is at the outer end of the sliding hole, and when the lock head at one end needs to be changed from the locking position to the unlocking position, the unlocking operation member is operated to control the operating rod corresponding to the lock head to move from the outer end of the sliding hole to the inner end, and at the same time drive the connecting member to cancel the resistance to the lock head and release the lock, and at the same time control the other operating rod to move from the outer end of the sliding hole to the inner end and move along the oblique side of the special-shaped groove to press the connecting member downward to make the card block disengage from the card hole, at this time, the position of the child seat relative to the connector can be adjusted, and after the force on the unlocking operation member is canceled, the two operating rods move from the inner end of the sliding hole to the outer end, and at the same time the connecting member is pulled to the first position by the tension spring.

10. The double-headed Isofix interface connector according to claim 9, characterized in that: A fixing frame that can be fixed on the child seat is installed on the outside of the connector, and the top surface of the fixing frame has a card hole. The connector can slide in the fixing frame along the arrangement direction of the card hole, or the connector is slidably installed in a fixing frame provided on the child seat, and the top surface of the fixing frame has a card hole, and the connector can slide along the arrangement direction of the card hole.

Images