CN205440484U - Rotary joint and child-moving vehicle with the same - Google Patents

Abstract

(B, ) the utility model relates to a rotation joint, including first member, the first connecting seat that is connected with a tip of first member, the second member, the second connecting seat that is connected with a tip of second member, the third member, the third connecting seat that is connected with a tip of third member, can lock rotation joint in development condition's locking mechanical system, the second connecting seat is located between first connecting seat and the third connecting seat and first connecting seat, second connecting seat and third connecting seat rotate the connection through the pivot mutually, first connecting seat and second connecting seat meet when rotating the plane of department when rotating with the second member with first member the plane at place parallel, second connecting seat and the third connecting seat plane intersection that the plane of department belonged to when rotatory with first member and second member that meets when rotating. The utility model discloses the bar is close to the outside when using, and the inside lateral deviation of bar moves when folding, avoids the fore -stock and the interference that pushes away the barre. (B, )

Description

A swivel joint and baby stroller with the swivel joint

technical field

The utility model relates to a rotary joint and a children's stroller with the rotary joint.

Background technique

The rotary joint in the prior art (for example, the authorized announcement number is CN204368222U, and the authorized announcement date is 2015-6-3), includes three parts of the base rod, the first rotating rod, and the second rotating rod connected in rotation, and the folding joint It also includes a locking mechanism for locking the folding joint in the unfolded position. The folding joint also includes a limit mechanism for limiting the expansion range of the folding joint. Locking ends on three parts of the rod. The limit mechanism makes the folding joint in the unfolded position, that is, the position where it is unfolded to the limit. In this position, the locking tongue blocks the movement path formed by the locking end when the folding joint is folded to limit the folding of the folding joint, so that the folding joint is locked. In the unfolded position, the lock is firm and easy to lock in place.

Utility model content

A technical problem to be solved by the utility model is to provide a rotary joint with different structures and a children's stroller with the rotary joint.

In order to solve the above technical problems, a kind of technical scheme that the utility model adopts is:

A rotary joint, which has an unfolded state and a folded state, the rotary joint includes a first rod, a first connecting seat connected to one end of the first rod, a second rod, and the The second connection seat connected to one end of the second rod, the third rod, the third connection seat connected to one end of the third rod, can lock the rotation joint in the unfolded state of the locking mechanism, the second connecting seat is located between the first connecting seat and the third connecting seat and the first connecting seat, the second connecting seat and the The third connecting seat is connected in rotation by a rotating shaft, and the plane where the first connecting seat and the second connecting seat meet when they rotate is parallel to the plane where the first rod member and the second rod member rotate. , the plane where the second connecting seat and the third connecting seat meet when they rotate intersects the plane where the first rod and the second rod rotate; the first rod, When the second rod and the third rod rotate close together, the third rod faces away from the plane where the first rod and the second rod rotate turn.

"The plane where the first rod and the second rod rotate" in the present invention refers to the plane where the first rod and the second rod are in the unfolded state and the plane where the first rod and the second rod are in the folded state. The plane on which it is located and the plane on which it is located when switching between the expanded state and the folded state are the same plane, which is defined herein as "the plane where the first rod and the second rod are rotated".

Specifically, a first through hole is opened on the first connecting seat, a second through hole is opened on the second connecting seat, a third through hole is opened on the third connecting seat, and the The rotating shaft passes through the first through hole, the second through hole and the third through hole in sequence, and the diameter of the third through hole is larger than the diameter of the rotating shaft.

More specifically, a first accommodating groove communicating with the third through hole is formed on the third connecting seat, and the first accommodating groove has a hole connected to the third through hole The bottom surface of the groove where the walls are connected, one end of the rotating shaft is formed with a protrusion protruding toward the radial extension of the rotating shaft and located in the first accommodation groove, when the rotating joint is in the unfolded In the state, there is a gap between the bump and the bottom surface of the groove.

More specifically, the third connecting seat includes a connecting seat body that is rotatably connected to the second connecting seat, and a socket formed on the connecting seat body that communicates with the first accommodating groove. The socket part is connected with the third rod and can be inserted into the socket part.

More specifically, the rotating shaft includes a first section rotatably disposed in the first through hole and the second through hole, a first segment rotatably disposed in the third through hole and having a diameter larger than the The second section of the diameter of the first section forms a stepped surface between the first section and the second section, and the rotary joint also includes a sleeve sleeved on the first section and located The first gasket between the stepped surface and the second connecting seat.

Specifically, the rotary joint further includes an end cover arranged on the first connecting seat and connected to the rotating shaft, sleeved on the rotating shaft and located between the end cover and the rotating shaft. The second spacer between the first connection seat.

Specifically, the rotating shaft is a stepped rivet.

Specifically, the axis of rotation of the first connecting seat and the second connecting seat intersects the axis of rotation of the second connecting seat and the third connecting seat.

Specifically, the locking mechanism includes a locking block formed on the other side of the third connecting seat opposite to the side where the third rod is located, and a locking block formed on the first rod. The first matching part and the second matching part formed on the second lever, when the locking mechanism is in the locked state, the two ends of the locking block are respectively connected to the first matching part abut against the second matching portion so that the rotating joint is in the unfolded state; when the locking mechanism is in the unlocked state, the locking block is in contact with the first matching portion and the second The two matching parts are separated so that the first connecting seat, the second connecting seat and the third connecting seat can be relatively rotatably arranged.

A children's stroller, comprising a stroller frame, said children's stroller also includes said swivel joint, said first bar and said second bar respectively constitute said stroller frame The front bracket and the push handle bar, the third bar member constitutes the armrest bar of the cart frame.

The orientation words mentioned above, such as left, right, up, down, front, back, inside, and outside, are defined when the child is riding in the stroller.

The scope of the present utility model is not limited to technical solutions formed by a specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or equivalent features. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Due to the application of the above-mentioned technical solutions, the utility model has the following advantages compared with the prior art:

The utility model improves the structure of the rotating joint. When there is only one rotation point between the front bracket and the push handle rod of the children's stroller, the front bracket and the push handle rod are not on the same level, and the overall size of the handrail rod is small. This structure allows the armrest bar to be close to the outside when in use, and when folded, the armrest bar relies on the fit of the inclined surface to shift to the inside, avoiding the interference of the front bracket and the push handle bar, so that the cart can be folded smoothly.

Description of drawings

Accompanying drawing 1 is the front view of the swivel joint (unplugged and unfolded state);

Accompanying drawing 2 is the top view of the revolving joint (unplugged and unfolded state);

Accompanying drawing 3 is the rear view of the rotary joint (unplugged and in the unfolded state);

Accompanying drawing 4 is the left side view of the rotating joint (unplugged and unfolded state);

Accompanying drawing 5 is the perspective view 1 of the rotating joint (unplugged and in the unfolded state);

Accompanying drawing 6 is the second perspective view of the rotating joint (unplugged and unfolded state);

Accompanying drawing 7 is the A-A sectional view of accompanying drawing 1;

Accompanying drawing 8 is the front view of the rotary joint (when it is plugged in and deployed);

Accompanying drawing 9 is the left side view of the rotary joint (when it is plugged in and deployed);

Accompanying drawing 10 is the perspective view of the rotating joint (when it is plugged in and deployed);

Accompanying drawing 11 is the front view of the swivel joint (plugged in and converted from unfolded state to folded state);

Accompanying drawing 12 is the top view of the rotary joint (plugged in and converted from the unfolded state to the folded state);

Accompanying drawing 13 is the left side view of the rotary joint (plugged in and converted from the unfolded state to the folded state);

Accompanying drawing 14 is the perspective view of the rotating joint (plugged in and converted from the unfolded state to the folded state);

Accompanying drawing 15 is the front view of the rotary joint (when plugged in and folded);

Accompanying drawing 16 is the top view of the rotary joint (when it is inserted and folded);

Accompanying drawing 17 is the rear view of the rotary joint (when plugged in and in a folded state);

Accompanying drawing 18 is the front view of children's stroller;

Accompanying drawing 19 is the left view of children's stroller;

Accompanying drawing 20 is the top view of children's stroller;

Accompanying drawing 21 is the perspective view of children's stroller;

Among them: 1. The first rod; 2. The first connecting seat; 3. The second rod; 4. The second connecting seat; 5. The third rod; 6. The third connecting seat; 7. The third through hole ; 8, the first accommodating groove; 9, the bottom surface of the groove; 10, the first section; 11, the second section; 12, the step surface; 13, the bump; 14, the socket part; 1 gasket; 17, end cover; 18, second gasket; 19, locking block; 20, first matching part; 21, second matching part.

detailed description

As shown in the accompanying drawings, a rotary joint has an expanded state and a folded state. The rotary joint includes a first rod 1, a first connecting seat 2 connected to one end of the first rod 1, a second rod 3. The second connecting seat 4 connected to one end of the second rod 3, the third rod 5, and the third connecting seat 6 connected to one end of the third rod 5 can lock the rotating joint in In the locking mechanism in the unfolded state, the second connecting seat 4 is located between the first connecting seat 2 and the third connecting seat 6, and the first connecting seat 2, the second connecting seat 4 and the third connecting seat 6 are rotatably connected by rotating shafts.

This rotary joint can be used on children's products such as children's strollers. In this embodiment, the first rod 1 and the second rod 3 constitute the front bracket and the push handle rod of the cart frame respectively, and the third rod 5 constitutes the Grab bar for the stroller frame. Of course, the first rod 1 , the second rod 3 and the third rod 5 can also constitute any other rods required on the stroller.

When the first connecting seat 2 and the second connecting seat 4 rotate, the plane at which they meet is parallel to the plane where the first rod 1 and the second rod 3 rotate, and when the second connecting seat 4 and the third connecting seat 6 rotate The plane at the junction intersects the plane where the first rod 1 and the second rod 3 rotate. The axis of rotation of the first connecting seat 2 and the second connecting seat 4 intersects the axis of rotation of the second connecting seat 4 and the third connecting seat 6 .

In this embodiment, when the first rod 1, the second rod 3 and the third rod 5 are rotated together, the third rod 5 moves away from the position where the first rod 1 and the second rod 3 rotate. The direction of the plane is rotated so that when the stroller is in normal use, the armrest bar is close to the outside of the stroller, and when the stroller is folded, the armrest bar is offset to the inside of the stroller, avoiding the front bracket and the push handle bar interference, so that the cart can be folded smoothly.

The first connecting seat 2 is provided with a first through hole, the second connecting seat 4 is provided with a second through hole, the third connecting seat 6 is provided with a third through hole 7, and the third connecting seat 6 is formed with a The three through holes 7 are connected to the first accommodation groove 8 , and the first accommodation groove 8 has a groove bottom surface 9 connected to the hole wall of the third through hole 7 . The rotating shaft passes through the first through hole, the second through hole and the third through hole 7 in sequence.

Specifically, the rotating shaft includes a first segment 10 that is rotatably disposed in the first through hole and the second through hole, a second segment 11 that is rotatably disposed in the third through hole 7 and has a diameter greater than that of the first segment 10, and is formed on the The stepped surface 12 between the first section 10 and the second section 11 . One end of the rotating shaft (specifically, the end of the second section 11 away from the first section 10 ) is formed with a protrusion 13 extending radially toward the rotating shaft and located in the first receiving groove 8 . The rotating shaft in this embodiment is a stepped rivet.

The diameter of the third through hole 7 is larger than the diameter of the rotating shaft. Specifically, the diameter of the third through hole 7 is larger than the diameter of the second section 11. When the rotating joint is in the unfolded state, there is a gap between the protrusion 13 and the groove bottom 9. Thus, the third connecting seat 6 can freely rotate relative to the second connecting seat 4 .

The third connecting seat 6 includes a connecting seat body rotatably connected to the second connecting seat 4, a socket portion 14 formed on the connecting seat body and communicating with the first accommodating groove 8, connected to the third rod 5 and The socket part 15 can be inserted into the socket part 14 .

The rotary joint also includes a first spacer 16 sleeved on the first section 10 and located between the stepped surface 12 and the second connecting seat 4, arranged on the first connecting seat 2 and connected to the rotating shaft (specifically, the second connecting seat 4 of the rotating shaft) A section 10 ) of the connected end cover 17 , the second gasket 18 sleeved on the rotating shaft (specifically, the first section 10 of the rotating shaft) and located between the end cover 17 and the first connecting seat 2 . The arrangement of the first washer 16 and the second washer 18 makes the connection between the first connecting seat 2 and the second connecting seat 4 more stable.

The locking mechanism includes a locking block 19 formed on the other side of the third connecting seat 6 opposite to the side where the third rod 5 is located, a first mating portion 20 formed on the first rod 1 , and a first matching portion 20 formed on the second rod 1 . The second matching part 21 on the piece 3, when the locking mechanism is in the locked state, the two ends of the locking block 19 are respectively pressed against the first matching part 20 and the second matching part 21 so that the rotating joint is in the unfolded state; when the locking When the mechanism is in an unlocked state, the locking block 19 is separated from the first matching portion 20 and the second matching portion 21 so that the first connecting seat 2 , the second connecting seat 4 and the third connecting seat 6 can be relatively rotatably arranged.

working principle:

When it is necessary to convert the rotating joint from the unfolded state to the folded state, the first rod 1, the second rod 3 and the third rod 5 are rotated, and the first connecting seat 2 and the second connecting seat 4 are on the first contact surface and Under the coordination of the third contact surface, the second connection seat 4 and the third connection seat 6 rotate under the cooperation of the second contact surface and the fourth contact surface, so that the third rod 5 is biased towards the inner side of the stroller. To avoid interference with the first rod 1 and the second rod 3, when the first rod 1 and the second rod 3 move closer to the closest position, the conversion of the rotating joint from the unfolded state to the folded state is completed.

When it is necessary to convert the rotating joint from the folded state to the unfolded state, the first rod 1 and the second rod 3 are rotated, and the cooperation between the first connecting seat 2 and the second connecting seat 4 on the first contact surface and the third contact surface Rotate around the axis of rotation until the first rod 1 and the second rod 3 are on the same straight line, while the first connecting seat 2 and the second connecting seat 4 rotate relative to each other, the first fitting part 20 and the second fitting part 21 are connected to the The locking block 19 of the third connecting seat 6 cooperates to drive the third connecting seat 6 to rotate relative to the second connecting seat 4 until the first matching part 20 and the second matching part 21 respectively press against the two ends of the locking block 19 to complete the rotation. The transition of a joint from its collapsed state to its unfolded state.

As mentioned above, we have fully described according to the purpose of the utility model, but the utility model is not limited to the above-mentioned embodiment and implementation method. Practitioners in the relevant technical fields can make different changes and implementations within the scope permitted by the technical ideas of the present utility model.

Claims (10)

1. A swivel joint, which has an unfolded state and a folded state, the swivel joint includes a first rod (1), a first connecting seat ( 2), the second rod (3), the second connecting seat (4) connected with one end of the second rod (3), the third rod (5), and the third The third connection seat (6) connected to one end of the rod (5), the locking mechanism capable of locking the rotating joint in the unfolded state, the second connection seat (4) is located at the first Between the connecting seat (2) and the third connecting seat (6) and the first connecting seat (2), the second connecting seat (4) and the third connecting seat (6) ) is rotationally connected by a rotating shaft, and it is characterized in that: the plane where the first connecting seat (2) and the second connecting seat (4) meet when they rotate is the same as the plane of the first rod (1) and the The plane where the second rod (3) rotates is parallel, and the plane where the second connecting seat (4) and the third connecting seat (6) meet when rotating is the same as the first rod (1) intersects with the plane where the second rod (3) rotates; the first rod (1), the second rod (3) and the third rod (5) intersect While turning closer, the third rod (5) rotates in a direction away from the plane where the first rod (1) and the second rod (3) rotate. 2. The rotary joint according to claim 1, characterized in that: the first connecting seat (2) is provided with a first through hole, and the second connecting seat (4) is provided with a second through hole hole, the third connecting seat (6) is provided with a third through hole (7), and the rotating shaft passes through the first through hole, the second through hole and the first through hole in sequence. Three through holes (7), the diameter of the third through hole (7) is larger than the diameter of the rotating shaft. 3. The rotary joint according to claim 2, characterized in that: the third connecting seat (6) is formed with a first accommodation groove (8) communicating with the third through hole (7) ), the first accommodating groove (8) has a groove bottom surface (9) connected to the hole wall of the third through hole (7), and one end of the rotating shaft is formed with a The radial extension of the rotating shaft protrudes from the projection (13) located in the first accommodation groove (8). When the rotation joint is in the unfolded state, the projection (13) and the There is a gap between the bottom surfaces (9) of the grooves. 4. The rotary joint according to claim 3, characterized in that: said third connecting seat (6) comprises a connecting seat body which is rotatably connected with said second connecting seat (4), formed on said The socket part (14) on the connecting seat body and communicated with the first accommodating groove (8) is connected with the third rod (5) and can be inserted into the socket part (14) inside the socket (15). 5. The swivel joint according to claim 3, characterized in that: said shaft comprises a first section (10) which is rotatably arranged in said first through hole and said second through hole, a rotatably arranged The second section (11), which is in the third through hole (7) and has a diameter larger than that of the first section (10), is formed between the first section (10) and the first section (10). The step surface (12) between the two sections (11), the said rotary joint also includes sleeves on the first section (10) and located between the said step surface (12) and the said second The first spacer (16) between the connecting seats (4). 6. The swivel joint according to claim 1, characterized in that: said swivel joint further comprises an end cover (17) arranged on said first connecting seat (2) and connected with said rotating shaft , a second gasket (18) sheathed on the rotating shaft and located between the end cover (17) and the first connecting seat (2). 7. The swivel joint according to any one of claims 1 to 6, characterized in that: said rotating shaft is a stepped rivet. 8. The swivel joint according to any one of claims 1 to 6, characterized in that: the rotation axes of the first connecting seat (2) and the second connecting seat (4) are in line with the The rotation axes of the second connecting seat (4) and the third connecting seat (6) intersect. 9. The swivel joint according to any one of claims 1 to 6, characterized in that: the locking mechanism includes a joint formed on the third connecting seat (6) and the third rod ( 5) The locking block (19) on the opposite side, the first mating part (20) formed on the first rod (1), the second rod (3) ) on the second matching part (21), when the locking mechanism is in the locked state, the two ends of the locking block (19) are respectively connected with the first matching part (20) and the The second matching part (21) is pressed against each other so that the said rotating joint is in the unfolded state; when the said locking mechanism is in the unlocked state, the said locking block (19) and said first matching part (20) Separated from the second matching part (21) so that the first connecting seat (2), the second connecting seat (4) and the third connecting seat (6) can rotate relatively ground setting. 10. A children's stroller, comprising a stroller frame, characterized in that: said children's stroller further comprises a swivel joint according to any one of claims 1 to 9, said first rod (1 ) and the second rod (3) respectively constitute the front bracket and push handle rod of the cart frame, and the third rod (5) constitutes the armrest rod of the cart frame .