Base locking structure and child safety seat applying same

Abstract

The utility model relates to a base locking structure and a child safety seat applying the base locking structure, the base locking structure comprises a lifting basket and a base, and a fixing rod is arranged at the bottom of the lifting basket; the base comprises a bottom plate and a top cover, and at least one clamping jaw supporting piece is arranged on the bottom plate. A clamping jaw fixing shaft is arranged on the clamping jaw supporting piece in a penetrating mode. The clamping jaw fixing shaft is sleeved with at least one clamping jaw, and the clamping jaw is rotationally connected with the clamping jaw fixing shaft. The clamping jaw is provided with a pushing edge, a blocking edge and a first fixing groove, and the pushing edge and the blocking edge are arranged adjacently. A locking piece is arranged on the clamping jaw supporting piece and can move up and down relative to the clamping jaw supporting piece. In the unlocking state, the locking piece abuts against the pushing edge. In the locking state, the locking piece abuts against the flange. The base locking structure and the child safety seat applying the base locking structure have the advantages that the locking piece tends to move towards the clamping jaw, it is guaranteed that the pushing edge and the blocking edge are reliably matched with the locking piece, the locking piece directly acts on the clamping jaw, and the clamping jaw is reliably locked.

Description

Technical Field

[0001] The utility model relates to the technical field of safety seats, in particular to a base locking structure and a child safety seat using the same. Background Art

[0002] In the prior art, for example, Chinese utility model patent CN202319976U discloses an infant safety seat, which includes a basket body and a base, wherein the basket body is detachably mounted on the base, a set of swing arms with snap hooks are pivotally connected to the base, a pull rod is slidably connected to the base, the pull rod is connected to the swing arm, a pair of cross bars are arranged at the bottom of the body, and the snap hooks are used to snap and limit the cross bars. However, the locking and swinging of the swing arm is controlled by the pull rod, rather than directly locking the swing arm, and the installation force of the basket is on the swing arm, so that the force between the swing arm and the pull rod is large, and the swing arm and the pull rod are easy to break or disengage, resulting in the risk of unlocking. Utility Model Content

[0003] An object of the present application is to provide a base locking structure and a child safety seat using the same, which can directly lock the claws.

[0004] The technical solution adopted in the present application is: a base locking structure, including a basket and a base, a fixing rod is provided at the bottom of the basket; the base includes a bottom plate and a top cover, and at least one claw support plate is provided on the bottom plate; a claw fixing shaft is passed through the claw support plate; at least one claw is sleeved on the claw fixing shaft, and the claw is rotatably connected to the claw fixing shaft; a pushing edge, a retaining edge and a first fixing groove are provided on the claw, and the pushing edge and the retaining edge are arranged adjacent to each other; a locking plate is provided on the claw support plate, and the locking plate can move up and down relative to the claw support plate, and the locking plate has a tendency to move toward the claw; in the unlocked state, the locking plate abuts against the pushing edge; in the locked state, the locking plate abuts against the retaining edge; the fixing rod cooperates with the first fixing groove.

[0005] Compared with the prior art, the advantage of the present application is that the locking plate has a tendency to move toward the claw, so that the locking plate can always be in contact with the claw, ensuring reliable cooperation between the pushing edge and the retaining edge and the locking plate, and the locking plate directly acts on the claw, so the locking of the claw is reliable, the claw and the claw fixing shaft are easy to install, and the claw fixing shaft is only used to bear the downward pressure of the basket, and has better bearing capacity.

[0006] In some embodiments of the present application, two claw support plates are provided and arranged symmetrically; the two ends of the claw fixing shaft are respectively connected to the two claw support plates; and the locking plates on the two claw support plates are arranged symmetrically.

[0007] Furthermore, it also includes a linkage component, which is used for the synchronous movement of two locking plates; the linkage component includes a linkage rod and a linkage block, and the linkage block can move in the horizontal direction; the two ends of the linkage rod are respectively connected to the two locking plates; the linkage block is provided with a first guide waist hole arranged obliquely, and the linkage rod is passed through the first guide waist hole.

[0008] Furthermore, it also includes an unlocking piece, which is used to pull the locking plate to move downward; the unlocking piece is connected to the linkage block.

[0009] Furthermore, it also includes a sliding member, which can move in the horizontal direction; the sliding member is provided with adjacent red and green labels; the top cover is provided with a display window; in the unlocked state, the red label is arranged directly below the display window; in the locked state, the green label is arranged directly below the display window.

[0010] Furthermore, it also includes a limit block, a mounting groove is provided on the sliding member, the limit block is arranged on the mounting groove, and an elastic member is provided between the limit block and the bottom surface of the mounting groove; a vertically arranged notch is provided on the claw support plate, and part of the locking plate extends out of the claw support plate through the notch; in the unlocked state, the limit block abuts against the side of the locking plate; in the locked state, the limit block is arranged below the locking plate.

[0011] In some embodiments of the present application, a first return spring is provided between the claw and the claw support plate, and the first return spring is used for resetting the claw.

[0012] In some embodiments of the present application, a second fixing groove is provided on the claw support plate, and the opening direction of the second fixing groove is vertically upward; in the locked state, the angle between the opening direction of the first fixing groove and the opening direction of the second fixing groove is ≤90°.

[0013] Furthermore, a second return spring is provided between the bottom plate and the linkage block, and the second return spring is used for resetting the linkage block; a third return spring is provided between the bottom plate and the sliding member, and the third return spring is used for resetting the sliding member.

[0014] In some embodiments of the present application, an anti-rollover plate is provided on the top cover; the anti-rollover plate abuts against the basket; a groove is provided on the top cover, and a protrusion cooperating with the groove is provided on the basket; and a claw is arranged between the anti-rollover plate and the groove.

[0015] A child safety seat comprises the above-mentioned base locking structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0017] Figure 2 It is a schematic diagram of the structure of Example 1 of the utility model without the top cover;

[0018] Figure 3 It is a top view of Example 1 of the utility model with the top cover removed;

[0019] Figure 4 yes Figure 2 A magnified view of part A in FIG.

[0020] Figure 5 yes Figure 2 A magnified view of part B in FIG.

[0021] Figure 6 yes Figure 2 The enlarged view of the C part in FIG.

[0022] Figure 7 It is a schematic structural diagram of the clamping claw of Example 1 of the utility model;

[0023] Figure 8 It is an exploded view of the limit block installation structure of Example 1 of the utility model;

[0024] Fig. 9 It is a structural schematic diagram of a basket handle according to Embodiment 1 of the present utility model;

[0025] Fig.10 It is a structural schematic diagram of the installation of the basket and the base of Example 1 of the utility model.

[0026] In the figure: 1, bottom plate; 2, top cover; 3, claw support plate; 4, claw fixing shaft; 5, claw; 6, push edge; 7, retaining edge; 8, first fixing groove; 9, locking plate; 10, linkage assembly; 11, linkage rod; 12, linkage block; 13, first guide waist hole; 14, unlocking member; 15, sliding member; 16, red label; 17, green label; 18, display window; 19, limit block; 20, installation groove; 21, elastic member ; 22. Notch; 23. First return spring; 24. Second fixing groove; 25. Second return spring; 26. Third return spring; 27. Second guide waist hole; 28. First limit column; 29. ​​Third guide waist hole; 30. Second limit column; 31. Card interface; 32. Pull rod; 33. Protruding plate; 34. Hook; 35. Basket; 36. Fixed rod; 37. Base; 38. Anti-flipping plate; 39. Groove; 40. Bump. DETAILED DESCRIPTION

[0027] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0028] Embodiment 1:

[0029] This embodiment provides a base locking structure, such as Figure 1 , Figure 2 , Figure 4 , Figure 7 , Fig. 9 , Fig.10 As shown, it includes a basket 35 and a base 37, and a fixing rod 36 is provided at the bottom of the basket 35; the base 37 includes a bottom plate 1 and a top cover 2, and at least one claw support sheet 3 is provided on the bottom plate 1; a claw fixing shaft 4 is passed through the claw support sheet 3; at least one claw 5 is sleeved on the claw fixing shaft 4, and the claw 5 is rotatably connected to the claw fixing shaft 4; the claw 5 is provided with a pushing edge 6, a retaining edge 7 and a first fixing groove 8, and the pushing edge 6 and the retaining edge 7 are arranged adjacently; a locking sheet 9 is provided on the claw support sheet 3, and the locking sheet 9 can move up and down relative to the claw support sheet 3, and the locking sheet 9 has a tendency to move toward the claw 5; in the unlocked state, the locking sheet 9 abuts against the pushing edge 6; in the locked state, the locking sheet 9 abuts against the retaining edge 7; the fixing rod 36 cooperates with the first fixing groove 8. The opening direction of the first fixing groove 8 is parallel to the horizontal plane. A card interface 31 is provided on the top cover 2, and a first fixing groove 8 is arranged on the card interface 31. The first fixing groove 8 is used to cooperate with the fixing rod 36 on the basket 35 or the chair body, so that the first fixing groove 8 is arranged outside the shell formed by the bottom plate 1 and the top cover 2, which is convenient for the fixing rod 36 on the basket 35 or the chair body to be inserted; the claw support plate 3, the claw fixing shaft 4, the claw 5 and the locking plate 9 are all arranged between the bottom plate 1 and the top cover 2; the locking plate 9 is arranged below the claw 5; the pushing edge 6 is used to push the locking plate 9 to move downward; the retaining edge 7 and the locking plate 9 cooperate to lock the claw 5 to prevent the claw 5 from resetting. The locking plate 9 has a tendency to move toward the claw 5, so that the locking plate 9 can always abut against the claw 5, ensuring reliable cooperation between the pushing edge 6 and the retaining edge 7 and the locking plate 9, and the locking plate 9 directly acts on the claw 5, and the locking of the claw 5 is reliable. The claw 5 and the claw fixing shaft 4 are easy to install. The claw fixing shaft 4 is only used to withstand the downward pressure of the basket 35, and has better bearing capacity.

[0030] In order to ensure reliable installation, two claw support sheets 3 are provided and arranged symmetrically relative to the center line; the two ends of the claw fixing shaft 4 are respectively connected to the two claw support sheets 3; the locking sheets 9 on the two claw support sheets 3 are arranged symmetrically relative to the center line; two claws 5 are provided and arranged symmetrically relative to the center line. The claw support sheets 3 are arranged symmetrically so that both ends of the claw fixing shaft 4 can be fixed, ensuring reliable fixation of the claw fixing shaft 4, which means that the pressure on the claw 5 installed on the claw fixing shaft 4 can be shared by the two claw support sheets 3, and the support is better; the locking sheets 9 are arranged symmetrically so that both claws 5 can be pushed and locked by the locking sheets 9.

[0031] In order to ensure that the locking plate 9 operates reliably, Figure 5As shown, the embodiment also includes a linkage assembly 10, which is used for the synchronous movement of the two locking plates 9; the linkage assembly 10 includes a linkage rod 11 and a linkage block 12, and the linkage block 12 can move in the horizontal direction; the two ends of the linkage rod 11 are respectively connected to the two locking plates 9; the linkage block 12 is provided with a first guide waist hole 13 arranged obliquely, and the linkage rod 11 is penetrated through the first guide waist hole 13. The linkage rod 11 is used to connect the two locking plates 9 so that the movement of the two locking plates 9 is synchronized; the linkage block 12 is used to control the movement of the linkage rod 11; through the cooperation of the first guide waist hole 13 and the linkage rod 11, the up and down movement of the locking plate 9 can drive the forward and backward movement of the linkage block 12, and similarly, the forward and backward movement of the linkage block 12 can also drive the up and down movement of the locking plate 9. In this embodiment, the first guide waist hole 13 is in a high position on the side facing the unlocking member 14, so that when the unlocking member 14 drives the linkage block 12 outward, the linkage rod 11 can drive the locking plate 9 to move downward to achieve unlocking.

[0032] like Figure 3 As shown, the linkage block 12 is provided with a second guide waist hole 27, the bottom plate 1 is provided with a first limit column 28, and the first limit column 28 is penetrated through the second guide waist hole 27. The second guide waist hole 27 and the first limit column 28 cooperate to limit the range of the linkage block 12 and ensure that the linkage block 12 moves reliably.

[0033] In order to facilitate unlocking, an unlocking member 14 is also included. The unlocking member 14 is used to pull the locking plate 9 downward; the unlocking member 14 is connected to the linkage block 12; at least part of the unlocking member 14 is connected to the outside world. In this embodiment, the unlocking member 14 is connected to the linkage block 12 through the pull rod 32; of course, the unlocking member 14 can also be connected to the linkage block 12 through a pull rope. The installation position of the linkage block 12 has a complex structure, and the direct movement has a high safety risk. The design of the unlocking member 14 facilitates the movement control of the linkage block 12 and can prevent the user from being pinched by the linkage block 12 when unlocking.

[0034] In order to facilitate identification of whether the lock is locked, a sliding member 15 is also included, and the sliding member 15 can move in the horizontal direction; the sliding member 15 is provided with adjacent red labels 16 and green labels 17; the top cover 2 is provided with a display window 18; in the unlocked state, the red label 16 is arranged directly below the display window 18, and the sliding member 15 abuts against the linkage block 12; in the locked state, the green label 17 is arranged directly below the display window 18. The sliding member 15 is provided with a third guide waist hole 29, and the bottom plate 1 is provided with a second limit column 30, and the second limit column 30 is penetrated on the third guide waist hole 29. In this embodiment, the sliding member 15 and the display window 18 are symmetrically arranged relative to the center line, so that the red label 16 or the green label 17 can be seen on both sides; the sliding member 15 is arranged between the linkage block 12 and the unlocking member 14. During the locking process, the linkage block 12 will move forward and push the sliding member 15 at the same time, so that the red label 16 on the display window 18 is converted into the green label 17.

[0035] In order to make the red label 16 and the green label 17 display reliable, Figure 8 As shown, it also includes a limit block 19, a mounting groove 20 is provided on the sliding member 15, the limit block 19 is arranged on the mounting groove 20, and an elastic member 21 is provided between the limit block 19 and the bottom surface of the mounting groove 20; a vertically arranged notch 22 is provided on the claw support sheet 3, and a part of the locking sheet 9 extends out of the claw support sheet 3 through the notch 22; in the unlocked state, the limit block 19 abuts against the side of the locking sheet 9; in the locked state, the limit block 19 is arranged below the locking sheet 9. In this embodiment, the elastic member 21 is a spring. The design of the limit block 19 is used to lock the red label 16 to prevent the red label 16 from accidentally moving to the green label 17, which may cause a risk of use; the elastic member 21 is used to reset the limit block 19 after it sinks. In the initial state, the limit block 19 abuts against the side of the locking plate 9, so that the sliding member 15 moves toward the locking plate 9 side and maintains the red mark 16 state; after locking, the locking plate 9 is in the highest position and the linkage block 12 retreats to the innermost side. The limit block 19 is not blocked by the locking plate 9 and can move toward the locking plate 9 side, so that the green mark 17 replaces the red mark 16; when unlocking, the linkage block 12 moves toward the unlocking member 14, and at the same time the locking plate 9 is pressed down, so that the elastic member 21 is compressed, and the limit block 19 sinks in the installation groove 20. At the same time, the movement of the linkage block 12 pushes the sliding member 15 to move, and the sliding member 15 drives the limit block 19 to move synchronously until the limit block 19 is disengaged from the bottom of the locking plate 9. The limit block 19 resets and rises under the action of the elastic member 21, so that the highest point of the limit block 19 is higher than the lowest point of the locking plate 9, and the sliding member 15 cannot retreat, maintaining the red mark 16 state.

[0036] In order to ensure reliable use of the claw 5 , a first return spring 23 is provided between the claw 5 and the claw support sheet 3 , and the first return spring 23 is used for returning the claw 5 .

[0037] In order to ensure reliable locking, the claw support sheet 3 is provided with a second fixing groove 24, and the opening direction of the second fixing groove 24 is vertically upward; in the locked state, the angle between the opening direction of the first fixing groove 8 and the opening direction of the second fixing groove 24 is ≤90°. The second fixing groove 24 cooperates with the first fixing groove 8 to achieve a better locking effect. In the locked state, the opening angle of the two is ≤90°, forming a closed space to prevent the fixing rod 36 from falling out.

[0038] For reliable use, Figure 6As shown, a second return spring 25 is provided between the bottom plate 1 and the linkage block 12, and the second return spring 25 is used to reset the linkage block 12; a third return spring 26 is provided between the bottom plate 1 and the sliding member 15, and the third return spring 26 is used to reset the sliding member 15. Specifically, a convex plate 33 is provided on the bottom plate 1, and the two ends of the second return spring 25 are respectively in contact with the convex plate 33 and the linkage block 12; a hook 34 is provided on the sliding member 15, and one end of the third return spring 26 is connected to the hook 34, and the other end is connected to the bottom plate 1. In this embodiment, the second return spring 25 is sleeved on the pull rod 32.

[0039] In order to prevent overturning, the top cover 2 is provided with an anti-overturning plate 38; the anti-overturning plate 38 abuts against the basket 35; a groove 39 is provided on the top cover 2, and a convex block 40 cooperating with the groove 39 is provided on the basket 35, and the convex block 40 abuts against the bottom surface of the groove 39; the claw 5 is arranged between the anti-overturning plate 38 and the groove 39. The anti-overturning plate 38 abuts against the basket 35 to prevent the basket 35 from rotating toward the anti-overturning plate 38; the groove 39 cooperates with the convex block 40, so that the basket 35 cannot rotate toward the groove 39; the anti-overturning plate 38 and the groove 39 are respectively on both sides of the claw 5, that is, the basket 35 cannot be overturned to both sides, ensuring the stability of the installation of the basket 35.

[0040] When in use, the fixing rod 36 on the basket 35 or the chair body will be stuck in the first fixing groove 8 and push the claw 5 to rotate, so that the pushing edge 6 on the claw 5 pushes the locking piece 9 to move downward until the locking piece 9 is disengaged from the pushing edge 6, and the locking piece 9 drives the linkage rod 11 to move downward, and the linkage rod 11 drives the linkage block 12 to move toward the unlocking member 14. At this time, the limit block 19 abuts against the side of the locking piece 9, and the sliding member 15 cannot move. After the locking piece 9 is disengaged from the pushing edge 6, the linkage block 12 loses the downward thrust. Under the thrust of the second return spring 25, the linkage block 12 moves in the direction away from the unlocking member 14, and at the same time the linkage rod 11 rises, so that the locking piece 9 rises and abuts against the retaining edge 7, the claw 5 cannot be reset, and the locked state is achieved. At the same time, the rise of the locking piece 9 makes When the limit block 19 loses its obstruction and the linkage block 12 has retreated, the sliding member 15 moves in the direction away from the unlocking member 14 under the pulling force of the third return spring 26, so that the red mark 16 on the display window 18 changes to the green mark 17; when unlocking, the unlocking member 14 is pulled, and the unlocking member 14 drives the linkage block 12 to move toward the unlocking member 14. The movement of the linkage block 12 drives the linkage rod 11 to descend, so that the locking plate 9 drops synchronously, and the locking plate 9 is out of the range of the retaining edge 7. The claw 5 rotates under the pulling force of the first return spring 23, so that the locking plate 9 returns to the range of the pushing edge 6, and the unlocked state is realized. At the same time, the movement of the linkage block 12 pushes the sliding member 15 to move toward the unlocking member 14, so that the green mark 17 on the display window 18 changes to the red mark 16.

[0041] Embodiment 2:

[0042] This embodiment provides a child safety seat, which includes the base locking structure described in Embodiment 1.

[0043] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A base locking structure, characterized in that: The invention comprises a basket (35) and a base (37), wherein a fixing rod (36) is provided at the bottom of the basket (35); the base (37) comprises a bottom plate (1) and a top cover (2), wherein at least one clamping claw support sheet (3) is provided on the bottom plate (1); a clamping claw fixing shaft (4) is passed through the clamping claw support sheet (3); at least one clamping claw (5) is sleeved on the clamping claw fixing shaft (4), and the clamping claw (5) is rotatably connected to the clamping claw fixing shaft (4); the clamping claw (5) is provided with a pushing edge (6) and a retaining edge (7) and a first fixed groove (8), the pushing edge (6) and the retaining edge (7) are arranged adjacent to each other; a locking plate (9) is provided on the claw support plate (3), the locking plate (9) can move up and down relative to the claw support plate (3), and the locking plate (9) has a tendency to move toward the claw (5); in the unlocked state, the locking plate (9) abuts against the pushing edge (6); in the locked state, the locking plate (9) abuts against the retaining edge (7); and the fixing rod (36) cooperates with the first fixed groove (8).

2. A base locking structure according to claim 1, characterized in that: Two clamping claw support plates (3) are provided and arranged symmetrically; the two ends of the clamping claw fixing shaft (4) are respectively connected to the two clamping claw support plates (3); and the locking plates (9) on the two clamping claw support plates (3) are arranged symmetrically.

3. A base locking structure according to claim 2, characterized in that: The invention also comprises a linkage assembly (10), wherein the linkage assembly (10) is used for synchronously moving the two locking plates (9); the linkage assembly (10) comprises a linkage rod (11) and a linkage block (12), wherein the linkage block (12) can move in a horizontal direction; the two ends of the linkage rod (11) are respectively connected to the two locking plates (9); the linkage block (12) is provided with a first guide waist hole (13) arranged obliquely, and the linkage rod (11) is inserted into the first guide waist hole (13).

4. A base locking structure according to claim 3, characterized in that: It also comprises an unlocking member (14), which is used to pull the locking plate (9) to move downward; the unlocking member (14) is connected to the linkage block (12).

5. The base locking structure according to claim 3 is characterized in that: It also includes a sliding member (15), which can move in a horizontal direction; The sliding member (15) is provided with adjacent red labels (16) and green labels (17); the top cover (2) is provided with a display window (18); in an unlocked state, the red label (16) is arranged directly below the display window (18); in a locked state, the green label (17) is arranged directly below the display window (18).

6. A base locking structure according to claim 5, characterized in that: The invention also comprises a limit block (19), a mounting groove (20) is provided on the sliding member (15), the limit block (19) is arranged on the mounting groove (20), and an elastic member (21) is arranged between the limit block (19) and the bottom surface of the mounting groove (20); a vertically arranged notch (22) is provided on the claw support sheet (3), and a part of the locking sheet (9) extends out of the claw support sheet (3) through the notch (22); in the unlocked state, the limit block (19) abuts against the side surface of the locking sheet (9); in the locked state, the limit block (19) is arranged below the locking sheet (9).

7. The base locking structure according to claim 1, characterized in that: The claw support sheet (3) is provided with a second fixing groove (24), the opening direction of the second fixing groove (24) being vertically upward; in a locked state, the angle between the opening direction of the first fixing groove (8) and the opening direction of the second fixing groove (24) is ≤90°.

8. The base locking structure according to claim 5, characterized in that: A second return spring (25) is provided between the base plate (1) and the linkage block (12), and the second return spring (25) is used for returning the linkage block (12); a third return spring (26) is provided between the base plate (1) and the sliding member (15), and the third return spring (26) is used for returning the sliding member (15); a first return spring (23) is provided between the clamping claw (5) and the clamping claw support sheet (3), and the first return spring (23) is used for returning the clamping claw (5).

9. The base locking structure according to claim 1, characterized in that: The top cover (2) is provided with an anti-turnover plate (38); the anti-turnover plate (38) abuts against the basket (35); the top cover (2) is provided with a groove (39), and the basket (35) is provided with a protrusion (40) that cooperates with the groove (39); the claw (5) is arranged between the anti-turnover plate (38) and the groove (39).

10. A child safety seat, characterized in that: It comprises a base locking structure as described in any one of claims 1-9.

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