Supporting leg storage structure of child safety seat

Abstract

The utility model relates to the field of child safety seats, in particular to a child safety seat supporting leg storage structure. Supporting legs under an existing child safety seat are complex in storage and poor in stability, unlocking needs to be conducted firstly, and misoperation is prone to occurring. The child safety seat supporting leg storage structure comprises a base movably arranged on a child safety seat base, the base can be pulled to move forwards to extend out of the base or pushed backwards to return, and the extending front end of the base is rotationally connected with a supporting leg through a pin shaft. A self-locking assembly with a spring and an unlocking switch is arranged between the base and the base, the self-locking assembly automatically locks the base pulled out of the base through extension and reset of the spring, the spring can be compressed to unlock the base by pushing the unlocking switch, and the base is made to move back to the original position. During use, the supporting legs can be directly pulled out without unlocking and then automatically locked, after use, the supporting legs can be pushed back to the original positions to be stored only by operating unlocking, the supporting legs are pulled out quickly, misoperation is avoided, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to the field of child safety seats, in particular to a supporting leg storage structure of a child safety seat. Background Art

[0002] A child safety seat includes a base that is detachably connected to the rear seat of a car and a seat body that is movably connected to the base. Some seat bodies can also be rotated relative to the base for forward / reverse installation to accommodate children of different ages and heights. In order to improve the firmness of the child safety seat, some child safety seats are provided with an extendable and adjustable support leg under the base to resist the floor of the car. Common support legs are stored under the base of the child safety seat in a combination of rotating, folding and moving. When in use, the support legs must be unlocked before they can be pulled out of the base and then rotated to unfold. When not in use, the support legs must also be rotated and folded, and the support legs must be returned to the base for storage after being unlocked. The storage structure of this support leg is a connecting rod structure with a locking mechanism. The structure is complex and has poor stability. It must be unlocked before being pulled out and retracted, and it is easy to mistakenly operate and forget to unlock first. Utility Model Content

[0003] The utility model aims to solve the technical problems that the supporting leg storage structure of the existing child safety seat is complicated, has poor stability, needs to be unlocked before use, and is prone to misoperation. A child safety seat supporting leg storage structure is provided, wherein the supporting leg can be directly pulled out when in use and then automatically locked without any unlocking operation. After use, only a simple unlocking operation is required to push the supporting leg into the base of the safety seat for storage, which is more convenient to use, especially pulling out the supporting leg is faster and will not cause misoperation.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a child safety seat support leg storage structure, including a base movably arranged on the child safety seat base, the base can be pulled forward to extend out of the base or pushed backward to return, the extended front end of the base is rotatably connected to the support leg through a pin shaft, and is characterized in that a self-locking component with a spring and an unlocking switch is provided between the base and the base, the self-locking component automatically locks the base pulled out of the base through the extension and reset of the spring, and pushing the unlocking switch can compress the spring to unlock the base so that the base can be pushed backward to return. The utility model enables the base to move back and forth relative to the child safety seat base through a self-locking component with a spring and an unlocking switch, so that the support legs installed at the extended ends of the base can be quickly extended and retracted and stored. When the base is pulled forward relative to the base, there is no need for an unlocking operation. When the base is directly pulled out into place, the spring is extended and reset to automatically lock the base. The rotation and expansion of the support legs can be before or after the base is pulled out, and there is no fixed order of priority, so that misoperation will not occur. When the support legs are stored, the unlocking switch is first pushed to compress the spring to release the lock caused by the extension and reset of the spring, and the base is returned to its original position. Then, the folded support legs are rotated to complete the storage of the support legs.

[0005] As a further improvement and supplement to the above technical scheme, the utility model adopts the following technical measures: the self-locking component includes a bottom cover, an unlocking switch, a sliding shaft and a spring. The bottom cover is fixedly connected to the base. The unlocking switch is movably arranged on the bottom cover and is pushed forward and reset by the spring. The unlocking switch is arranged on an inclined slot which is higher in the front and lower in the back. The base is movably arranged on the bottom cover. The base is arranged on a horizontal first positioning slot. The rear end of the first positioning slot extends downward to form a first locking position which is at the same height as the low end of the inclined slot. The sliding shaft is perpendicular to the moving direction of the base and is horizontally arranged. The sliding shaft passes through the inclined slot and the first positioning slot at the same time. After the base is pulled forward and extended into place, the sliding shaft passes through the low end of the inclined slot and the first locking position at the same time, and the unlocking switch is moved forward into place under the push of the spring to support the retaining edge arranged at the front of the bottom cover. When the unlocking switch is pushed backward into place, the spring is compressed, and the sliding shaft moves along the inclined slot and is lifted up to disengage from the first locking position and enter the first positioning slot, so that the base can move backward and retreat. Because the sliding shaft passes through the inclined slot and the first positioning slot at the same time, the two work together to limit the forward and backward movement of the base. When the base moves forward and is pulled out, the sliding shaft moves backward relative to the first positioning slot until it falls into the first locking position. During this process, the spring will push the unlocking switch to elastically move forward to resist the bottom cover. At the same time, the sliding shaft falls from the high end of the inclined slot to the low end to cooperate with the sliding shaft to move relative to the first positioning slot to fall into the first locking position. After reaching the position, the sliding shaft cannot continue to move forward due to the inclined slot of the unlocking switch, and then the extended length of the base is locked. When the base needs to be retracted, the unlocking switch is pushed backward to compress the spring, so that the sliding shaft slides relative to the inclined slot and rises from the low end at one end to the high end at the other end. The sliding shaft is synchronously lifted to leave the first locking position, and the sliding shaft can be laterally translated along the first positioning slot again. At this time, the base can freely move backward to return to its original position.

[0006] The base cover is on the unlocking switch, and the side walls on both sides of the base are symmetrically provided with two parallel first positioning grooves, and the rear ends of the two first positioning grooves are extended downward to form a first locking position, and the side walls on both sides of the unlocking switch are symmetrically provided with two parallel oblique grooves, and the two ends of the sliding shaft extend to both sides to pass through the oblique grooves and the first positioning grooves on the same side. The base and the unlocking switch are respectively provided with two symmetrical first positioning grooves and two oblique grooves, and the two symmetrical grooves are also parallel to each other. The first positioning groove and the oblique groove on the same side can be paired into a group of positioning, and the two groups of positioning cooperate with each other to make the sliding shaft move smoothly, and the base moves back and forth smoothly without being light on one side and heavy on the other.

[0007] The base is covered with a shell to cover the rotation connection between the base and the support leg. The shell is fixedly connected to the base. The side wall of the shell is provided with a second positioning slot that is parallel to the first positioning slot and has the same height. The rear end of the second positioning slot extends downward to form a second locking position corresponding to the first locking position. The end of the sliding shaft extends outward through the inclined slot, the first positioning slot and the second positioning slot on the same side in sequence. The shell covers the rotation connection between the base and the support leg, which protects the connection end of the support leg and the base while also having an aesthetic effect. At the same time, the shell is also provided with a second positioning slot and a second locking position that are equivalent to the first positioning slot and the first locking position. The sliding shaft passes through the first positioning slot and the second positioning slot at the same time. When the shell moves synchronously with the base, the sliding shaft moves synchronously relative to the first positioning slot and the second positioning slot.

[0008] The bottom cover is fixed with an upper cover with two open ends to cover the shell, and the shell passes through the upper cover. The side walls on both sides of the upper cover are provided with vertical grooves extending longitudinally. The end of the sliding shaft passes through the inclined groove, the first positioning groove and the second positioning groove in sequence, and then passes through the vertical groove and extends out, and is limited in the vertical limiting groove provided on the base. The upper cover is open at both ends, which does not affect the shell from moving back and forth with the base. The function of the vertical groove is to ensure that the sliding shaft stays in place and moves up and down, and cooperates with the inclined groove, the first positioning groove and the second positioning groove to realize the movement, extension, locking and return to the original position of the base; the vertical limiting groove of the base can position the end of the sliding shaft to prevent the sliding shaft from slipping out of the inclined groove, the first positioning groove and the vertical groove.

[0009] The two sides of the upper cover extend and bend inward to form two symmetrical slide rails that match the housing, and the housing is movably arranged on the slide rails. The slide rails guide the movement of the housing and the base to ensure that the base moves smoothly along a preset direction.

[0010] The inner surface of the slide rail is provided with a convex rib extending along the moving direction of the base and contacting the side wall of the shell. The convex rib is on the inner surface of the slide rail and contacts the side wall of the shell. The convex ribs on the two slide rails can clamp the shell in the middle to limit it, further guide the movement of the shell and the base, and improve the movement stability.

[0011] The unlocking switch and the bottom cover are each provided with a column end as the first positioning part and the second positioning part, and the two ends of the spring are sleeved on the two column ends along the moving direction of the base to respectively press against the unlocking switch and the bottom cover. The spring is sleeved on the two column ends along the moving direction of the base to press against the unlocking switch and the bottom cover, and the moving direction of the base is consistent with the expansion and contraction direction of the spring, ensuring that the spring works normally and elastically presses against the unlocking switch.

[0012] The bottom cover is provided with an operation hole for touching and pushing the unlocking switch, and the operation hole is located below the unlocking switch. When a hand is extended upward into the operation hole, the unlocking switch can be easily touched and pushed to unlock the base, so that the base can freely move backward and return to its original position.

[0013] The bottom of the unlocking switch is provided with a downwardly protruding operating part that is inserted into the operating hole, and when the unlocking switch moves forward and backward into position, the operating part can abut against the side walls of the front and rear sides of the operating hole. Since the bottom of the unlocking switch is provided with an outwardly protruding operating part that is inserted into the operating hole and can only slide back and forth in the operating hole to abut against the side walls of the front and rear sides, the forward and backward movement of the unlocking switch can be limited.

[0014] The utility model utilizes a self-locking component composed of a spring and an unlocking switch to enable the base to move back and forth relative to the base of the child safety seat, thereby facilitating the rotation of the support legs at the front end of the base to be released and stored. When the base is pulled forward relative to the base, there is no need for an unlocking operation. After the base is directly pulled out into place, the spring extends and locks the base. When the base is stored, it is only necessary to push the unlocking switch to compress the spring to release the lock, and the base can be freely pushed back to its original position. The process of retracting and releasing the base is smooth and fast without misoperation, and further, the retraction and release of the support legs is also very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 : A front schematic diagram of the utility model.

[0016] Figure 2 : The bottom schematic diagram of the utility model.

[0017] Figure 3 : Exploded view of the structure of the present utility model.

[0018] Figure 4 : Schematic diagram of the self-locking component described in the utility model.

[0019] Figure 5 : Exploded diagram of the self-locking component structure.

[0020] Figure 6 : Schematic diagram of the connection between the self-locking component and the supporting leg.

[0021] Figure 7 : Figure 6 AA section view.

[0022] In the figure: 1. base, 2. pedestal, 3. supporting leg, 4. spring, 5. bottom cover, 51. second positioning part, 52. retaining edge, 6. unlocking switch, 61. first positioning part, 7. sliding shaft, 8. inclined groove, 9. first positioning groove, 91. first locking position, 10. shell, 11. second positioning groove, 111. second locking position, 12. upper cover, 121. slide rail, 13. vertical groove, 14. convex rib, 15. operating hole, 16. operating part. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The utility model Figures 1 to 7 As shown, a child safety seat support leg storage structure includes a base 2 movably arranged on a child safety seat base 1. The base 2 can be pulled forward to extend out of the base 1 or pushed backward to return to the base 1. The extended front end of the base 2 is rotatably connected to the support leg 3 through a pin shaft. A self-locking component with a spring 4 and an unlocking switch 6 is provided between the base 1 and the base 2. The self-locking component can automatically lock the base 2 pulled out of the base 1 by extending and resetting the spring 4. Pushing the unlocking switch 6 can compress the spring 4 to unlock the base 2, so that the base 2 can be freely pushed backward to return to its original position.

[0025] When the utility model is in use, the base can be directly pulled forward to unfold the supporting legs, and the pulled-out base can be automatically locked without any prior unlocking, and there will be no misoperation; when the supporting legs are to be stored after use, it is only necessary to push the unlocking switch to unlock the base, and the base together with the supporting legs can be pushed back into the base.

[0026] Furthermore, the self-locking component includes a bottom cover 5, an unlocking switch 6, a sliding shaft 7 and a spring 4. The bottom cover 5 is fixedly connected to the base 1. The unlocking switch 6 is movably arranged on the bottom cover 5 and is pushed forward and reset by the spring 4. A column end is respectively arranged on the unlocking switch 6 and the bottom cover 5 as a first positioning portion 61 and a second positioning portion 51. The two ends of the spring 4 are sleeved on the two column ends along the moving direction of the base 2 to respectively resist the unlocking switch 6 and the bottom cover 5. Two parallel inclined grooves 8 are symmetrically arranged on the side walls on both sides of the unlocking switch 6. The inclined grooves 8 are higher in the front and lower in the back. The base 2 is movably arranged on the surface of the bottom cover 5 and is covered on the unlocking switch 6. Two parallel first positioning grooves 9 are symmetrically arranged on the side walls on both sides of the base 2. The two first positioning grooves 9 are horizontally facing the eye. God, and the rear ends of the grooves are extended downward to form a first locking position 91 that is equal to the low end of the inclined groove 8, the sliding shaft 7 passes through the inclined groove 8 and the first positioning groove 9 perpendicular to the moving direction of the base 2, wherein both ends of the sliding shaft 7 extend to both sides and pass through the inclined groove 8 and the first positioning groove 9 on the same side; when the base 2 is pulled out and moved forward to the right position, the end of the sliding shaft 7 passes through the low end of the inclined groove 8 and the first locking position 91 on the corresponding side, and at the same time, the unlocking switch 6 is pushed forward to the right position by the spring 4 to support the retaining edge 52 set at the front of the bottom cover 5, and the base 2 is in a locked state; when the unlocking switch 6 is pushed to move backward to the right position, the spring 4 is compressed, the sliding shaft 7 moves and is lifted along the inclined groove 8 to disengage from the first locking position 91 and re-enter the first positioning groove 9, and the base 2 is unlocked and can freely move backward to return to its original position.

[0027] When the base moves forward and is pulled out, the sliding shaft will move backward relative to the first positioning groove to fall into the first locking position. During this process, the spring will push the unlocking switch to elastically move forward to resist the retaining edge, and at the same time the sliding shaft will also fall from the high end of the inclined groove to the low end to cooperate with the sliding shaft to move relative to the first positioning groove to fall into the first locking position. After reaching the position, the sliding shaft is limited by the inclined groove of the unlocking switch and the unlocking switch is resisted and cannot continue to move forward, and the extended length of the base is locked; when the base needs to be retracted, the unlocking switch is pushed backward to compress the spring, and the sliding shaft slides relative to the inclined groove, rising from the low end at the rear of the inclined groove to the high end at the front, and the sliding shaft is lifted and synchronously disengaged from the first locking position and re-enters the first positioning groove. The base is unlocked, and at this time the base can move freely backward to return to its original position before being pulled out by re-making a relative motion of lateral translation along the first positioning groove.

[0028] Furthermore, a shell 10 is also placed on the base 2 to cover the rotation connection between the base 2 and the support leg 3. The shell 10 is fixedly connected to the base 2 by bolts. The side walls on both sides of the shell 10 are provided with second positioning grooves 11 that are parallel to the first positioning groove 9 and have the same height. The rear end of the second positioning groove 11 extends downward to form a second locking position 111 corresponding to the first locking position 91. The end of the sliding shaft 7 extends outward through the inclined groove 8, the first positioning groove 9 and the second positioning groove 11 on the same side in sequence; an upper cover 12 is fixedly connected to the bottom cover 5 to partially cover the shell 10, and the two ends of the upper cover 12 are open so that the shell The body 10 can extend through the upper cover 12, and the side walls on both sides of the upper cover 12 are provided with longitudinally extending vertical grooves 13. The two ends of the sliding shaft 7 extend outward after passing through the inclined groove 8, the first positioning groove 9 and the second positioning groove 11, and the vertical groove 13 on the same side in sequence, and are limited in the vertical limiting grooves provided on the base 1. At the same time, the two sides of the upper cover 12 are extended and bent inward to form two symmetrical slide rails 121 that match the shell 10. The shell 10 is movably set on the slide rails 121. The inner surfaces of the two slide rails 13 are provided with convex ribs 14 extending along the moving direction of the base 2 and contacting the side walls of the shell 10 on the same side.

[0029] The shell covers the rotating connection between the base and the support leg, and has both protective and aesthetic functions. The second positioning grooves and the second locking position on both sides of the shell also correspond to the first positioning groove and the first locking position of the base. During the back and forth movement of the base, the two ends of the sliding shaft can synchronously move relative to each other in the first positioning groove and the second positioning groove on the corresponding side, or synchronously fall into the first locking position and the second locking position, and the base moves smoothly and steadily. The vertical grooves on the side walls on both sides of the upper cover are used to ensure that the sliding shaft stays in place and moves up and down, and cooperates with the inclined groove, the first positioning groove and the second positioning groove to realize the movement of the base to extend, lock and return to the original position; the slide rail guides the movement of the shell and the base to ensure that the base moves in a preset direction. The convex ribs on the two slide rails clamp the shell in the middle to limit it, further guide the movement of the shell and the base, and improve the stability of the base movement.

[0030] To facilitate pushing the unlocking switch, an operating hole 15 is opened on the bottom cover 5 for touching and pushing the unlocking switch 6. The operating hole 15 is located below the unlocking switch 6. A downwardly protruding operating portion 16 is also provided at the bottom of the unlocking switch 6 to be inserted into the operating hole 15. When the unlocking switch 6 moves forward and backward into place, the operating portion 16 can resist the side walls on the front and rear sides of the operating hole 15.

[0031] When in use, you only need to put your hand into the operating hole to touch and push the unlocking switch to unlock the base that has been pulled out into place, so that the base can move freely backward and return to its original position. The operating part can only slide back and forth in the operating hole, and the sliding distance matches the unlocking operation stroke. When the spring pushes the unlocking switch forward to the retaining edge, the operating part simultaneously presses against the side wall in front of the operating hole. When the unlocking switch is pushed backward to compress the spring into place, the operating part simultaneously presses against the side wall behind the operating hole.

Claims

1. A child safety seat support leg storage structure, comprising a base (2) movably arranged on a child safety seat base (1), the base (2) can be pulled forward to extend out of the base (1) or pushed backward to retract, and the extended front end of the base (2) is rotatably connected to the support leg (3) via a pin shaft, wherein the structure is characterized in that A self-locking component with a spring (4) and an unlocking switch (6) is provided between the base (1) and the pedestal (2). The self-locking component automatically locks the pedestal (2) pulled out of the base (1) by extending and resetting the spring (4). Pushing the unlocking switch (6) can compress the spring (4) to unlock the pedestal (2), so that the pedestal (2) can be pushed back. The self-locking assembly comprises a bottom cover (5), an unlocking switch (6), a sliding shaft (7) and a spring (4); the bottom cover (5) is fixedly connected to the base (1); the unlocking switch (6) is movably arranged on the bottom cover (5) and is pushed forward and reset by the spring (4); the unlocking switch (6) is provided with an inclined groove (8) which is higher in the front and lower in the rear; the base (2) is movably arranged on the bottom cover (5); the base (2) is provided with a first horizontal positioning groove (9); the rear end of the first positioning groove (9) is extended downward to form a first locking position (91) which is at the same height as the lower end of the inclined groove (8); the sliding shaft (7) is perpendicular to the base (1) and is provided with a first locking position (91) which is at the same height as the lower end of the inclined groove (8); The base (2) moves in a horizontal direction and passes through the inclined slot (8) and the first positioning slot (9) at the same time. After the base (2) is pulled forward and extended to a position, the sliding shaft (7) passes through the lower end of the inclined slot (8) and the first locking position (91) at the same time, and the unlocking switch (6) is pushed forward by the spring (4) to press against the retaining edge (52) provided at the front of the bottom cover (5); when the unlocking switch (6) is pushed backward and moved to a position, the spring (4) is compressed, and the sliding shaft (7) moves along the inclined slot (8) and is lifted up to leave the first locking position (91) and enter the first positioning slot (9), so that the base (2) can move backward and retract.

2. The child safety seat support leg storage structure according to claim 1, characterized in that The base (2) is covered on the unlocking switch (6), and two first positioning grooves (9) are symmetrically arranged on the side walls on both sides of the base (2) and are parallel to each other. The rear ends of the two first positioning grooves (9) are extended downward to form a first locking position (91). Two parallel inclined grooves (8) are symmetrically arranged on the side walls on both sides of the unlocking switch (6), and two ends of the sliding shaft (7) extend to both sides and pass through the inclined grooves (8) and the first positioning grooves (9) on the same side.

3. The child safety seat support leg storage structure according to claim 2, characterized in that The base (2) is covered with a shell (10) to cover the rotation connection between the base (2) and the supporting leg (3); the shell (10) is fixedly connected to the base (2); a second positioning groove (11) is formed on the side wall of the shell (10) and is parallel to the first positioning groove (9) and has the same height; the rear end of the second positioning groove (11) extends downward to form a second locking position (111) corresponding to the first locking position (91); and the end of the sliding shaft (7) extends outward through the inclined groove (8), the first positioning groove (9) and the second positioning groove (11) on the same side in sequence.

4. The child safety seat support leg storage structure according to claim 3, characterized in that An upper cover (12) with open ends is fixedly connected to the bottom cover (5) to partially cover the shell (10). The shell (10) passes through the upper cover (12). The side walls on both sides of the upper cover (12) are provided with longitudinally extending vertical grooves (13). The end of the sliding shaft (7) passes through the inclined groove (8), the first positioning groove (9) and the second positioning groove (11) in sequence outwards and then passes through the vertical groove (13) to extend outwards and is limited in the vertical limiting groove provided on the base (1).

5. The child safety seat support leg storage structure according to claim 4, characterized in that The upper cover (12) is extended at both sides and then bent inwards to form two symmetrical slide rails (121) that match the housing (10), and the housing (10) is movably disposed on the slide rails (121).

6. The child safety seat support leg storage structure according to claim 5, characterized in that The inner surface of the slide rail (121) is provided with a convex rib (14) extending along the moving direction of the base (2) and in contact with the side wall of the housing (10).

7. The child safety seat support leg storage structure according to claim 1, characterized in that The unlocking switch (6) and the bottom cover (5) are each provided with a column end as a first positioning portion (61) and a second positioning portion (51), and two ends of the spring (4) are sleeved on the two column ends along the moving direction of the base (2) to respectively abut against the unlocking switch (6) and the bottom cover (5).

8. The support leg storage structure of a child safety seat according to any one of claims 1 to 7, characterized in that The bottom cover (5) is provided with an operating hole (15) for touching and pushing the unlocking switch (6), and the operating hole (15) is located below the unlocking switch (6).

9. The child safety seat support leg storage structure according to claim 8, characterized in that The bottom of the unlocking switch (6) is provided with an operating portion (16) protruding downwards and inserted into the operating hole (15); when the unlocking switch (6) moves forward and backward into position, the operating portion (16) can abut against the side walls of the operating hole (15) on both the front and rear sides.

Images