CN211969561U

CN211969561U - Locking structure of folding bassinet

Info

Publication number: CN211969561U
Application number: CN202020584737.3U
Authority: CN
Inventors: 李小怀; 刘明福
Original assignee: Fujian Rongzhong Renfa Children Products Co ltd
Current assignee: Fujian Rongzhong Renfa Children Products Co ltd
Priority date: 2020-04-18
Filing date: 2020-04-18
Publication date: 2020-11-20
Anticipated expiration: 2030-04-18

Abstract

The utility model belongs to the technical field of the bassinet technique and specifically relates to a locking structure of folding bassinet is related to. The utility model relates to a locking structure of a folding baby carriage, wherein a spring mounting groove is arranged on the upper part of a locking block, a reset spring is arranged in the spring mounting groove of the locking block, and the lower end of the reset spring is positioned in the locking block; and meanwhile, a fixed shaft for enabling the locking block and the push-pull rod to be connected in a sliding mode is limited on the upper end face of the return spring, and the return spring is effectively prevented from being separated from the spring mounting groove. And work as the utility model discloses when the locking structure broke down and damaged, the fixed axle was demolishd to the accessible for the locking piece breaks away from the locking groove, makes the bassinet correspond the position and can fold up temporarily, move, the restoration of this position locking structure of being convenient for.

Description

Locking structure of folding bassinet

Technical Field

The utility model belongs to the technical field of the bassinet technique and specifically relates to a locking structure of folding bassinet is related to.

Background

In order to maintain the unfolded use state of the stroller, a locking structure is often added at the folding position of the stroller in the prior art to prevent the frame of the stroller from folding when in use. The locking structure is generally arranged at the joint position of a push-pull rod, a wheel support rod or a connecting rod of the baby carriage.

The chinese patent folding tricycle with publication number CN208544318U is provided with a locking structure between the upper push rod and the lower push rod. The top end of the lower push rod extends out of the rear steering tube, the extension end of the lower push rod is provided with a cylindrical folding head, the folding head is arranged along the left and right direction, the lower end of the upper push rod is provided with a folding seat which is sleeved on the folding head and can be turned over forwards relative to the folding head, the folding head and the folding seat are rotationally connected through a rotating shaft penetrating through the folding head and the folding seat, the upper part of the upper push rod is sleeved with an upper push tube, the top end of the upper push tube is provided with a push handle, the lower end of the upper push tube is sleeved with a folding limiting tube which can be clamped into a limiting hole arranged on the folding head so as to realize the position limitation of the upper push rod and the lower push rod, the upper push tube is sleeved with a push rod handle which can control the position of the folding limiting tube so as to control the relative locking or the relative rotation of the upper push rod and the lower push rod, the folding limiting tube and the upper sleeve are fixedly connected, the upper sleeve is sleeved with a reset spring on a pipe section of which the upper part extends out of the folding limiting pipe, wherein the upper end of the upper push rod is provided with an annular limiting plate to limit the top of the reset spring, the upper sleeve is provided with long-strip-shaped sliding holes on two opposite side walls along the axial direction of the upper sleeve, the upper push pipe is provided with a round hole corresponding to the sliding holes and penetrates through a guide rod in the round hole, and the guide rod penetrates through the two sliding holes to limit the vertical sliding displacement of the upper sleeve.

The above prior art solutions have the following drawbacks:

the return spring is repeatedly compressed and released between the folding limiting pipe and the limiting plate, pressure is continuously applied to the limiting plate, and after the return spring is used for a long time, the limiting plate turns upwards and cracks, so that the return spring is separated from the folding limiting pipe; or the lower end of the return spring is clamped between the folding limiting pipe and the push-up pipe in the using process, so that the folding limiting pipe and the push-up pipe are occluded and clamped, the part of the baby carrier cannot be folded, but the structure is difficult to repair due to the closed state.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a locking structure of folding bassinet has the advantage that prevents that reset spring from breaking away from locking structure.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the locking structure is arranged between the push-pull rod and the wheel supporting rod and comprises a locking block and a reset spring. The upper end of the wheel strut is provided with a locking groove matched with the lower end part of the locking block; an inner strip hole is axially formed in the middle of the locking block and is fixedly arranged at the lower part of the push-pull rod through a fixed shaft; the locking block is provided with a spring installation groove with an upward opening, and the spring installation groove is positioned outside the inner strip hole; the reset spring is arranged in the spring mounting groove and is positioned between the fixed shaft and the bottom wall of the spring mounting groove; the reset spring is limited by the fixed shaft, so that the fixed shaft and the upper end of the inner strip hole push the lower end part of the locking block into the locking groove in a normal state; the upper end of the locking block is connected with a movable sleeve; the side wall of the push-pull rod is provided with a sliding strip hole corresponding to the moving sleeve, the moving sleeve is sleeved outside the push-pull rod, and the moving sleeve is connected with the upper end part of the locking block through the sliding strip hole; when the movable sleeve drives the locking block to move upwards, the lower end of the inner strip hole moves towards the fixed shaft, so that the locking block is separated from the locking groove.

By adopting the technical scheme, the upper part of the locking block is provided with the spring mounting groove, the reset spring is arranged in the spring mounting groove of the locking block, and the lower end of the reset spring is positioned in the locking block; and meanwhile, a fixed shaft for enabling the locking block and the push-pull rod to be connected in a sliding mode is limited on the upper end face of the return spring, and the return spring is effectively prevented from being separated from the spring mounting groove. And work as the utility model discloses when the locking structure broke down and damaged, the fixed axle was demolishd to the accessible for the locking piece breaks away from the locking groove, makes the bassinet correspond the position and can fold up temporarily, move, the restoration of this position locking structure of being convenient for.

The present invention may be further configured in a preferred embodiment as: the spring mounting groove is radially inwards provided with an inner limiting part; an inclined plane is arranged in the upper end surface of the inner limiting part.

By adopting the technical scheme, the inner limiting part of the spring mounting groove can enable the reset spring to be clamped in the spring mounting seat, so that the locking structure can be conveniently mounted on the push-pull rod. When the locking structure uses, interior spacing portion can cooperate fixed axle restriction reset spring simultaneously. The inclined plane setting of interior spacing portion up end can make interior spacing portion down the terminal surface receive from reset spring's thrust shift to the spring mount pad outer wall, reduces the condition emergence of upwards bending, rupture behind the long-term atress of interior spacing portion.

The present invention may be further configured in a preferred embodiment as: and an outer convex part is arranged radially outwards of the spring mounting groove.

By adopting the technical scheme, the outer convex part can keep a certain gap between the upper part of the locking block and the push-pull rod, so that the friction force generated by the axial movement of the locking block along the push-pull rod is reduced, and the movement efficiency of the locking block is improved.

The present invention may be further configured in a preferred embodiment as: the movable sleeve is sleeved on the outer wall of the upper part of the push-pull rod; the movable sleeve is connected with the locking block through a brace; the brace passes through the strip hole that slides through brace round pin axle and is connected with the removal cover.

By adopting the technical scheme, the moving sleeve is arranged on the upper part of the push-pull rod, so that the position of the moving sleeve is improved, and a user can operate the locking structure more conveniently.

The present invention may be further configured in a preferred embodiment as: the push-pull rod is also provided with a limiting hole at the same side as the sliding strip hole; the side wall of the movable sleeve is hinged with a movable limiting part corresponding to the limiting hole; the movable sleeve is provided with a through hole corresponding to the side wall of the movable limiting part and the limiting hole; the lower end of the movable limiting part is provided with a clamping block matched with the limiting hole; when the clamping block is buckled in the limiting hole through the through hole, the moving sleeve is limited to drive the brace to move upwards.

By adopting the technical scheme, the movable limiting part can limit the moving sleeve to be buckled in the limiting hole of the push-pull rod, so that the situation that the push-pull moving sleeve is mistakenly operated by personnel in the using process of the baby carriage, the locking block of the locking structure is separated from the locking groove of the wheel supporting rod, the push-pull rod and the wheel supporting rod are folded, and the normal use of the baby carriage is influenced is avoided.

The present invention may be further configured in a preferred embodiment as: the middle of the movable limiting piece is hinged to the movable sleeve through a pin rod; and a buckle spring is arranged between one side of the movable limiting part, which is far away from the clamping block, and the movable sleeve.

By adopting the technical scheme, the movable limiting part takes the pin rod as a fulcrum, and the buckle spring pushes the other side of the movable limiting part outwards, so that the clamping block of the movable limiting part can be normally buckled in the limiting hole.

The present invention may be further configured in a preferred embodiment as: the outer wall that activity locating part and buckle spring correspond is equipped with protruding button.

By adopting the technical scheme, the raised keys facilitate a user to quickly position and press the movable limiting part, so that the fixture blocks of the limiting part are separated from the limiting holes, and the movable sleeve can slide along the push-pull rod.

The present invention may be further configured in a preferred embodiment as: the brace and the locking block are integrally manufactured.

By adopting the technical scheme, the brace and the locking block are integrally arranged, so that the connection strength between the brace and the locking block can be enhanced.

The present invention may be further configured in a preferred embodiment as: the side wall of the upper end of the movable sleeve is provided with a pull handle which is outward in the radial direction.

By adopting the technical scheme, the pull handle of the movable sleeve is convenient for a user to pull the movable sleeve along the axial direction of the push-pull rod.

The present invention may be further configured in a preferred embodiment as: the outer wall of the lower end part of the locking block is an inward and downward inclined plane; the locking groove is a wide groove matched with the lower end part of the locking block.

Adopt above-mentioned technical scheme, the inside decurrent inclined plane setting of locking piece lower extreme makes its tip external diameter reduce gradually, and the wide mouthful of setting in cooperation locking groove is blocked fast in the locking inslot of locking piece when convenient to use.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the utility model is provided with a spring mounting groove on the upper part of the locking block, and a reset spring is arranged in the spring mounting groove of the locking block, so that the lower end of the reset spring is positioned in the locking block; and meanwhile, a fixed shaft for enabling the locking block and the push-pull rod to be connected in a sliding mode is limited on the upper end face of the return spring, and the return spring is effectively prevented from being separated from the spring mounting groove.

2. When the utility model discloses when the locking structure broke down and damaged, the fixed axle was demolishd to the accessible for the locking piece breaks away from the locking groove, makes the bassinet correspond the position and can fold up temporarily, move, the restoration of this position locking structure of being convenient for.

3. The movable limiting part can limit the moving sleeve to be buckled in the limiting hole of the push-pull rod, so that the situation that the push-pull moving sleeve is operated by a person by mistake in the using process of the baby carriage is avoided, the locking block of the locking structure is separated from the locking groove of the wheel supporting rod, the push-pull rod and the wheel supporting rod are folded, and the normal use of the baby carriage is influenced.

Drawings

FIG. 1 is a diagram illustrating the usage of the present invention;

FIG. 2 is a schematic view of the locking arrangement of FIG. 1;

FIG. 3 is an enlarged view of a portion of the locking structure of FIG. 2;

fig. 4 is a partially enlarged view of the locking structure of embodiment 2.

In the figure, 1, a push-pull rod; 2. a wheel strut; 3. a locking block; 4. a return spring; 5. a locking groove; 6. an inner strip hole; 7. a fixed shaft; 8. a spring mounting groove; 9. moving the sleeve; 10. a sliding strip hole; 11. an inner limiting part; 12. an outer convex portion; 13. bracing; 14. pulling a handle; 15. a limiting hole; 16. a movable limiting part; 21. a through hole; 22. a clamping block; 23. a pin rod; 24. a snap spring; 25. and (6) protruding the key.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: as shown in fig. 1, the utility model discloses a locking structure of folding bassinet, folding bassinet includes push-and-pull rod 1 and wheel branch 2, locking structure sets up in the push-and-pull rod and sets up between push-and-pull rod 1 and wheel branch 2.

As shown in fig. 2 and 3, the locking structure includes a lock block 3 and a return spring 4. The upper end of the wheel strut 2 is provided with a locking groove 5 matched with the lower end part of the locking block 3; an inner strip hole 6 is axially arranged in the middle of the locking block 3, and the inner strip hole 6 is fixedly arranged at the lower part of the push-pull rod 1 through a fixed shaft 7; the locking block 3 is provided with a spring installation groove 8 with an upward opening, and the spring installation groove 8 is positioned outside the inner strip hole 6; the return spring 4 is arranged in the spring mounting groove 8, and the return spring 4 is positioned between the fixed shaft 7 and the bottom wall of the spring mounting groove 8; the return spring 4 is limited by the fixed shaft 7, so that the fixed shaft 7 and the upper end of the inner strip hole 6 push the lower end part of the locking block 3 into the locking groove 5 in a normal state; the upper end of the locking block 3 is connected with a movable sleeve 9; the side wall of the push-pull rod 1 is provided with a sliding bar hole 10 corresponding to the moving sleeve 9, the moving sleeve 9 is sleeved outside the push-pull rod 1, and the moving sleeve 9 is connected with the upper end part of the locking block 3 through the sliding bar hole 10; when the movable sleeve 9 drives the locking block 3 to move upwards, the lower end of the inner strip hole 6 moves towards the fixed shaft 7, so that the locking block 3 is separated from the locking groove 5.

The utility model is provided with a spring mounting groove 8 on the upper part of the locking block 3, and a reset spring 4 is arranged in the spring mounting groove 8 of the locking block 3, so that the lower end of the reset spring 4 is positioned in the locking block 3; and meanwhile, a fixed shaft 7 for enabling the locking block 3 and the push-pull rod 1 to be connected in a sliding mode is limited on the upper end face of the return spring 4, and the return spring 4 is effectively prevented from being separated from the spring mounting groove 8. And when the utility model discloses when the locking structure broke down and damaged, fixed axle 7 was demolishd to the accessible for locking piece 3 breaks away from locking groove 5, makes the bassinet correspond the position and can fold up temporarily, move, the restoration of this position locking structure of being convenient for.

An inner limiting part 11 is arranged in the spring mounting groove 8 radially inwards; the upper end surface of the inner limiting part 11 is internally provided with an inclined surface.

The inner limiting part 11 of the spring installation groove 8 can enable the return spring 4 to be clamped in the spring installation seat, and the locking structure is convenient to install on the push-pull rod 1. Meanwhile, when the locking structure is used, the inner limiting part 11 can be matched with the fixed shaft 7 to limit the return spring 4. The inclined plane setting of interior spacing portion 11 up end can make the thrust that interior spacing portion 11 lower extreme face received from reset spring 4 shift to the spring mounting seat outer wall, reduces the condition emergence that interior spacing portion 11 is bent, is broken upwards after long-term atress.

The spring mounting groove 8 is provided with an outward protrusion 12 radially outward. The outward convex part 12 can keep a certain clearance between the upper part of the locking block 3 and the push-pull rod 1, reduce the friction force generated by the axial movement of the locking block 3 along the push-pull rod 1 and improve the movement efficiency of the locking block 3.

The moving sleeve 9 is sleeved on the outer wall of the upper part of the push-pull rod 1; the movable sleeve 9 is connected with the locking block 3 through a brace 13; the brace 13 is connected with the moving sleeve 9 by a brace 13 pin shaft penetrating through the sliding strip hole 10. The movable sleeve 9 is arranged at the upper part of the push-pull rod 1, so that the position of the movable sleeve 9 is improved, and a user can operate the locking structure more conveniently.

The brace 13 is integrally formed with the locking block 3. The brace 13 and the locking block 3 are integrally arranged, so that the connection strength between the brace and the locking block can be enhanced.

The upper end side wall of the movable sleeve 9 is provided with a pull handle 14 which is radially outward. The pull handle 14 of the moving sleeve 9 is arranged to facilitate the user to pull the moving sleeve 9 axially along the push-pull rod 1.

The outer wall of the lower end part of the locking block 3 is an inward and downward inclined plane; the locking groove 5 is a wide groove adapted to the lower end of the locking block 3. The downward inclined plane setting of 3 lower extremes of lock block makes its tip external diameter reduce gradually under it, and the wide mouthful setting of cooperation locking groove 5 is convenient for lock block 3 to block in locking groove 5 fast when using.

The implementation principle of the embodiment is as follows:

an unlocking process: a user pulls the moving sleeve 9 upwards along the axial direction of the push-pull rod 1 through the pulling handle 14, the pulling strip 13 connected with the moving sleeve 9 drives the locking block 3 to slide along with the moving sleeve 9 until the lower part of the locking block 3 is separated from the locking groove 5 located in the wheel supporting rod 2, unlocking of the locking structure is achieved, and the push-pull rod 1 and the wheel supporting rod 2 can rotate around the same rotating shaft.

And (3) locking process: the locking block 3 moves downwards along the axial direction of the push-pull rod 1 under the action of the return spring 4, so that the locking block 3 is clamped in the locking groove 5.

Example 2: based on the embodiment 1, as shown in fig. 4, the push-pull rod 1 is further provided with a limiting hole 15 on the same side as the sliding strip hole 10; the side wall of the movable sleeve 9 is hinged with a movable limiting part 16 corresponding to the limiting hole 15; the movable sleeve 9 is provided with a through hole 21 corresponding to the limit hole 15 on the side wall of the movable limit piece 16; the lower end of the movable limiting piece 16 is provided with a fixture block 22 matched with the limiting hole 15; when the clamping block 22 is clamped in the limiting hole 15 through the through hole 21, the limiting moving sleeve 9 drives the brace 13 to move upwards.

The movable limiting part 16 can limit the moving sleeve 9 to be buckled in the limiting hole 15 of the push-pull rod 1, so that the situation that a person mistakenly operates the push-pull moving sleeve 9 in the using process of the baby carriage to enable the locking block 3 of the locking structure to be separated from the locking groove 5 of the wheel support rod 2, the push-pull rod 1 and the wheel support rod 2 are folded, and the normal use of the baby carriage is affected is avoided.

The middle of the movable limiting piece 16 is hinged with the movable sleeve 9 through a pin rod 23; a snap spring 24 is arranged between one side of the movable limiting piece 16 far away from the clamping block 22 and the movable sleeve 9. The movable limiting member 16 uses the pin 23 as a fulcrum, and the buckle spring 24 pushes the other side of the movable limiting member 16 outward, so that the clamping block 22 of the movable limiting member 16 is normally buckled in the limiting hole 15.

As shown in fig. 1, the outer wall of the movable limiting member 16 corresponding to the snap spring 24 is provided with a protruding key 25. The raised key 25 facilitates the user to quickly position and press the movable position-limiting member 16, so that the block 22 of the position-limiting member is separated from the position-limiting hole 15, and the movable sleeve 9 can slide along the push-pull rod 1.

The parts such as the moving sleeve 9, the brace 13, the pull handle 14, the raised keys 25 and the like of the locking structure of the folding baby carrier are made by injection molding, and the injection molding raw materials comprise a scratch-resistant agent, so that the parts have frosted texture, the sliding condition is not easy to occur in use, and the unlocking operation of the locking structure is quick.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A locking structure of a folding baby carrier comprises a push-pull rod (1) and a wheel support rod (2), and is arranged between the push-pull rod (1) and the wheel support rod (2); the method is characterized in that: comprises a locking block (3) and a return spring (4); the upper end of the wheel support rod (2) is provided with a locking groove (5) matched with the lower end part of the locking block (3); an inner strip hole (6) is formed in the middle of the locking block (3) along the axial direction, and the inner strip hole (6) is fixedly arranged at the lower part of the push-pull rod (1) through a fixed shaft (7); the locking block (3) is provided with a spring installation groove (8) with an upward opening, and the spring installation groove (8) is positioned on the outer side of the inner strip hole (6); the reset spring (4) is arranged in the spring mounting groove (8), and the reset spring (4) is positioned between the fixed shaft (7) and the bottom wall of the spring mounting groove (8); the reset spring (4) is limited by the fixed shaft (7), so that the fixed shaft (7) and the upper end of the inner strip hole (6) normally push the lower end part of the locking block (3) into the locking groove (5); the upper end of the locking block (3) is connected with a movable sleeve (9); the side wall of the push-pull rod (1) is provided with a sliding strip hole (10) corresponding to the moving sleeve (9), the moving sleeve (9) is sleeved outside the push-pull rod (1), and the moving sleeve (9) is connected with the upper end part of the locking block (3) through the sliding strip hole (10); when the movable sleeve (9) drives the locking block (3) to move upwards, the lower end of the inner strip hole (6) moves towards the fixed shaft (7), so that the locking block (3) is separated from the locking groove (5).

2. The latch structure of a folding stroller according to claim 1, wherein: an inner limiting part (11) is arranged in the spring mounting groove (8) in the radial direction; an inclined plane is arranged in the upper end surface of the inner limiting part (11).

3. The latch structure of a folding stroller according to claim 2, wherein: and an outer convex part (12) is arranged on the spring mounting groove (8) in the radial direction outwards.

4. The latch structure of a folding stroller according to claim 1, wherein: the moving sleeve (9) is sleeved on the outer wall of the upper part of the push-pull rod (1); the movable sleeve (9) is connected with the locking block (3) through a brace (13); the brace (13) penetrates through the sliding strip hole (10) through a brace (13) pin shaft to be connected with the movable sleeve (9).

5. The latch structure of a folding stroller according to claim 1 or 4, wherein: the push-pull rod (1) is also provided with a limiting hole (15) on the same side as the sliding strip hole (10); the side wall of the movable sleeve (9) is hinged with a movable limiting part (16) corresponding to the limiting hole (15); the movable sleeve (9) is provided with a through hole (21) corresponding to the side wall of the movable limiting piece (16) and the limiting hole (15); a clamping block (22) matched with the limiting hole (15) is arranged at the lower end of the movable limiting piece (16); when the clamping block (22) is clamped in the limiting hole (15) through the through hole (21), the limiting moving sleeve (9) drives the brace (13) to move upwards.

6. The latch structure of a folding stroller according to claim 5, wherein: the middle of the movable limiting piece (16) is hinged to the movable sleeve (9) through a pin rod (23); a buckle spring (24) is arranged between one side of the movable limiting piece (16) far away from the clamping block (22) and the movable sleeve (9).

7. The latch structure of a folding stroller according to claim 6, wherein: and the outer wall of the movable limiting part (16) corresponding to the buckle spring (24) is provided with a raised key (25).

8. The latch structure of a folding stroller according to claim 4, wherein: the brace (13) and the locking block (3) are integrally manufactured.

9. The latch structure of a folding stroller according to claim 1, wherein: the side wall of the upper end of the movable sleeve (9) is provided with a pull handle (14) which is outward in the radial direction.

10. The latch structure of a folding stroller according to claim 1, wherein: the outer wall of the lower end part of the locking block (3) is an inward and downward inclined plane; the locking groove (5) is a wide groove matched with the lower end part of the locking block (3).