CN219306392U - Foldable cross bar of crib side rail - Google Patents

Abstract

The utility model relates to a foldable cross rod of a crib side fence, which comprises a first folding rod, a second folding rod and a folding joint arranged between the first folding rod and the second folding rod, wherein the folding joint further comprises a locking mechanism, the locking mechanism comprises a sliding block, the sliding block is provided with a sliding stroke for locking or unlocking the relative folding of the first folding rod and the second folding rod in the up-down direction, the unlocking is realized by pulling the sliding block to slide downwards, the folding joint further comprises a guide channel fixed with the joint substrate, the guide channel comprises a vertical channel extending in the up-down direction, the vertical channel is used for a continuous linear tension transmission mechanism to pass through, the first end of the tension transmission mechanism is fixedly connected with the sliding block, and the second end of the tension transmission mechanism extends away from the folding joint for external force application, so that the second end of the continuous linear transmission mechanism is pulled to pull the sliding block.

Description

Foldable cross bar of crib side rail

Technical Field

The utility model relates to the technical field of crib manufacturing, in particular to an improvement of a foldable cross rod of a crib side rail.

Background

One conventional playard skeletal structure is shown in fig. 1, in which a skeletal section of a playard includes a base frame 100 and a side rail 200, the base frame 100 serving as a bottom support, and the side rail 200 generally includes vertical bars vertically connected to the base frame 100 and cross bars connected between the vertical bars to form a closed rail structure. The foldable crib is widely adopted because of the characteristics of easy folding, easy transportation and small occupied space, the foldable crib is provided with folding structures for the underframe 100 and the side rails 200 to be unfolded and folded conveniently, the underframe 100 part is widely adopted to be provided with a lifting turnover structure 300 with a handle, when the handle is lifted, the rod body of the underframe 100 is turned up to be folded relatively, the side rails 200 part is widely adopted to be provided with folding joints 400 on the cross bars, and the folding joints 400 enable the cross bars to be arranged to be folded in half, and the structures are common technologies in the field.

An unlockable locking structure is typically provided on the folding joint 400 to lock the pivoting of the two cross bars relative to the fold so that the cross bars can remain in an unfolded state when the crib is unfolded. The unlocking device of the locking structure most commonly adopts an elastic key 401, wherein the elastic key 401 is arranged in a vertically sliding way, and the unlocking is realized by pressing the elastic key 401 to slide. However, since the structure of the elastic key 401 is independent, it is not easy for other structures of the crib to generate linkage, so in the prior art, the operation of the folding joint 400 and the lifting folding structure 300 are independent, and when the crib is folded, the folding joint 400 and the lifting folding structure 300 are often independently operated in multiple steps, which restricts the further improvement of the simplicity of the folding structure of the crib.

Disclosure of Invention

In view of the above, the present utility model provides a foldable cross bar for a side rail of a crib with optimized structure.

The utility model is realized by adopting the following technical scheme:

the utility model provides a foldable cross rod of a crib side fence, which comprises a first folding rod, a second folding rod and a folding joint arranged between the first folding rod and the second folding rod, wherein the folding joint comprises a joint base body, the first folding rod and the second folding rod are respectively pivoted at the left end and the right end of the joint base body so as to be pivoted to be relatively unfolded or folded, the folding joint further comprises a locking mechanism, the locking mechanism comprises a sliding block, the sliding block is provided with a sliding stroke for locking or unlocking the relative folding of the first folding rod and the second folding rod in the up-down direction, the sliding block is pulled to slide downwards so as to realize the unlocking, the folding joint further comprises a guide channel fixed with the joint base body, the guide channel comprises a vertical channel extending in the up-down direction, the vertical channel is used for a continuous linear tension transmission mechanism to pass through, the first end of the tension transmission mechanism is fixedly connected with the sliding block, and the second end of the tension transmission mechanism is extended away from the folding joint so as to be used for applying external force, and the sliding block is pulled by pulling the second end of the continuous tension transmission mechanism.

Wherein, in one embodiment, the tension transmission mechanism is a first pull wire.

In one embodiment, the first pull wire is bent from the first end of the first pull wire after passing through the vertical channel and then extends in the left-right direction.

Wherein, in one embodiment, the guide channel further comprises a curved channel which is connected with the vertical channel and has ninety degrees of radian, and the stay wire is guided to extend in the left-right direction through the curved channel after passing through the vertical channel from the first end of the stay wire.

In one embodiment, the folding joint further comprises a guide seat fixed with the joint base body, the sliding block and the guide seat are arranged in a top-to-bottom alignment mode, the guide channel is arranged on the guide seat, and the sliding block is in sliding connection with the joint base body or in sliding connection with the guide seat.

In one embodiment, the folding device further comprises a second pull wire and a third pull wire, wherein the first end of the second pull wire is connected to the first folding rod, the second end of the second pull wire extends away from the first folding rod, the first end of the third pull wire is connected to the second folding rod, the second end of the third pull wire extends away from the second folding rod, and the second end of the second pull wire and the second end of the third pull wire are used for applying external force to respectively pull the first folding rod and the second folding rod to perform relatively-unfolded pivoting.

In one embodiment, the joint substrate is provided with a direction-changing roller shaft with a fixed axis, the first end of the second stay wire is connected to the first folding rod which is relatively positioned at the left side, the first end of the third stay wire is connected to the second folding rod which is relatively positioned at the right side, the second stay wire vertically extends from the first end of the second stay wire along the up-down direction to bypass the direction-changing roller shaft and then horizontally extends to the right, and the third stay wire vertically extends from the first end of the third stay wire along the up-down direction to bypass the direction-changing roller shaft and then horizontally extends to the right.

In one embodiment, the guide seat is provided with a first limiting channel and a second limiting channel extending along the left-right direction, and the second stay wire and the third stay wire respectively penetrate through the first limiting channel and the second limiting channel.

In one embodiment, the guide seat is provided with two grooves with opposite openings, the buckle plate with the buckle hook is fastened and fixed on the guide seat, and the buckle hook of the buckle plate is inserted into the two grooves to form the first limit channel and the second limit channel respectively.

In one embodiment, the locking mechanism further comprises a first limiting pin and a second limiting pin, a first transverse groove and a second transverse groove which extend leftwards and rightwards are formed in the joint base body, the first transverse groove and the second transverse groove are respectively close to the first folding rod and the second folding rod and are bilaterally symmetrical, a first chute and a second chute which extend obliquely and are bilaterally mirror symmetrical are arranged on the sliding block, the first limiting pin is simultaneously in sliding fit in the first transverse groove and the first chute, the second limiting pin is simultaneously in sliding fit in the second transverse groove and the second chute, and accordingly the first chute and the second chute enable the up-and-down sliding of the sliding block to be converted into sliding that the first limiting pin and the second limiting pin are synchronously far away from or close to each other in the left-right direction, so that the relative folding pivoting of the first folding rod and the second folding rod can be simultaneously locked or unlocked.

The utility model has the following beneficial effects:

1. the joint matrix is provided with the guide channel, and the first stay wire can reliably pull the sliding block under the guide action of the guide channel, so that the first stay wire can flexibly run through the guide channel. The guide channel can also limit the first stay wire, so that the first stay wire is prevented from being wound with other parts due to factors such as shaking, stretching and the like;

2. according to the utility model, the sliding block is led out through the first stay wire, so that the sliding block can be linked through the first stay wire. The second end of the first stay wire can be led out to different positions, such as to the vertical rod position of the crib side fence, so that a user can conveniently fold the crib and simultaneously operate the lifting folding mechanism and the unlocking of the folding joint, and more importantly, the unlocking of the folding joint and the lifting folding mechanism can be linked through the first stay wire, so that the lifting folding mechanism can be linked with the sliding block to unlock the locking mechanism of the folding joint.

Drawings

FIG. 1 is a schematic view of a prior art crib frame;

FIG. 2 is a schematic view of a foldable cross bar of a crib siderail in an embodiment;

FIG. 3 is an exploded view of a collapsible crossbar of a crib siderail of an embodiment;

FIG. 4 is a cross-sectional view of a foldable cross-bar of a crib siderail in an embodiment;

FIG. 5 is a schematic view of a slider, guide shoe and buckle in an embodiment;

fig. 6 is a schematic view of a shoe and buckle in an embodiment.

Detailed Description

For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.

The utility model will now be further described with reference to the drawings and detailed description.

For convenience of description, this embodiment uses the orientation of the foldable rail of the crib side rail in the unfolded static use state as the described orientation.

Referring to fig. 2 to 4, as a preferred embodiment of the present utility model, there is provided a foldable cross bar of a crib side rail, comprising a first folding bar 1, a second folding bar 2, and a folding joint 3 provided between the first folding bar 1 and the second folding bar 2, the folding joint 3 comprising a slider 4, a guide holder 5, and a joint base 31, the guide holder 5 being fixedly connected to the joint base 31, the slider 4 being slidably connected to the guide holder 5 up and down, the first folding bar 1 and the second folding bar 2 being pivotally connected to left and right ends of the joint base 31 respectively so as to be pivotable for relative unfolding or folding, the folding joint 31 further comprising a locking mechanism for synchronously locking or unlocking the pivoting of the first folding bar 1 and the second folding bar 2 relative folding. In this embodiment, the locking mechanism includes a first stop pin 6 and a second stop pin 7, a first transverse slot 311 and a second transverse slot 312 extending from left to right are disposed on the joint base 31, the first transverse slot 311 and the second transverse slot 312 are respectively close to the first folding rod 1 and the second folding rod 2 and are symmetric from left to right, a first chute 41 and a second chute 42 extending obliquely and being symmetric from left to right are disposed on the sliding block 4, the first stop pin 6 is simultaneously slidingly engaged in the first transverse slot 311 and the first chute 41, the second stop pin is simultaneously slidingly engaged in the second transverse slot 312 and the second chute 42, so that the up-down sliding of the sliding block 4 is converted into a sliding motion in which the first stop pin 6 and the second stop pin 7 are synchronously separated from or close to each other in the left-right direction, when the sliding block 4 is in a higher position, the first stop pin 6 and the second stop pin 7 are relatively separated from each other, and the first folding rod 1 and the second folding rod 2 are respectively overlapped with the first stop pin 6 and the second stop pin 7, and when the sliding block 4 is locked on the sliding block 6 and the second stop pin 7 are relatively separated from the first folding rod 1 and the second folding rod 7, and the first stop pin 2 and the second stop pin 7 are relatively separated from the first folding rod 2 and the first stop pin 2 and the second stop pin 2 are relatively contacted with each other.

In order to reliably achieve the overlap of the first folding bar 1 and the first stop pin 6, a flat sheet-shaped overlap joint 11 is fixed to the end of the first folding bar 1. The lap joint 11 is further inserted with a latch 30, and the latch 30 is slidably matched in an arc slot 310 provided on the joint base 31, so as to limit the rotation range of the first folding rod 1 through the interference fit between the latch 30 and two slot ends of the arc slot 310. The second folding bar 2 is also provided with the same structure, and a description thereof will not be repeated.

It is obvious that the slider 4 may be directly slidably connected to the joint base 31, as long as the slider 4 has a vertical sliding stroke. In this embodiment, the structure of the first chute 41 and the second chute 42 is used to convert the up-down motion of the slider 4 into the left-right motion of the first limiting pin 6 and the second limiting pin 7, which is simple, compact and reliable in structure, and in other embodiments, other linkage structures may be used to lock or unlock the first folding rod 1 and the second folding rod 2 by the slider 4, for example, a linkage structure is used to link the first folding rod 1 (the second folding rod 2) and the first limiting pin 6 (the second limiting pin 7).

In this embodiment, a slide way 54 is disposed in the guide seat 5, the sliding block 4 is slidably connected in the slide way 54, meanwhile, the slide way 54 further provides an inner cavity space for installing the elastic restoring member 20, one end of the elastic restoring member 20 acts on the guide seat 5, the other end acts on the sliding block 4, and the elastic restoring member 20 is a compression spring in this embodiment for restoring the sliding of the sliding block 4. The arrangement of the elastic restoring element 2 in the slideway 54 can improve the compactness of the structure of the folding joint 3. In other embodiments, the elastic restoring member may be disposed between the joint base 31 and the slider 4, but the materials and the installation mode should be changed adaptively, for example, the elastic restoring member is replaced by a pull spring, and the pull spring is connected with the joint base 31 and the slider 4 through a pull hook.

The above describes the unlocking mechanism of the locking structure of the folding joint 3 in the present embodiment, that is, the pivoting of locking or unlocking the first folding bar 1 and the second folding bar 2 relative to the folding by the up-and-down sliding of the slider 4. Referring to fig. 2-4, the foldable cross bar of the present embodiment further includes a first pull wire 8, wherein a first end of the first pull wire 8 is fixedly connected to the slider 4, and a second end extends away from the folding joint 3 for external application of force to pull the slider 4. The present embodiment draws the slider 4 through the first wire 8 so that the slider 4 can be interlocked via the first wire 8. The second end of the first stay wire 8 can be led out to different positions, such as to the vertical rod position of the crib side fence, so that a user can conveniently fold the crib by simultaneously operating the lifting and folding mechanism and the unlocking of the folding joint 3, more importantly, the unlocking of the folding joint 3 and the lifting and folding mechanism can be linked through the first stay wire 8, and one feasible scheme is that the second end of the first stay wire 8 is connected to the lifting and folding mechanism of the crib underframe, so that the lifting and folding mechanism can be linked with the sliding block 4 to realize the unlocking of the locking mechanism of the folding joint 3, and therefore, the folding of the crib side fence and the underframe can be realized only by operating the lifting and folding mechanism.

As shown in fig. 4, the sliding block 4 and the guide seat 4 are aligned up and down, the guide seat 5 is provided with a guide channel 51, in this embodiment, the guide channel 51 only includes a vertical channel extending vertically up and down, and the first wire 8 passes through the guide channel 51 to make the first end of the first wire 8 extend vertically up and down. The first end of the first pull wire 8 is always vertical up and down no matter how the first pull wire 8 extends through the guiding function of the guiding channel 51, so when the first pull wire 8 is pulled, the acting force of the first end of the first pull wire 8 on the slider 4 is also vertical downward, and no component force in other directions exists, so that the first pull wire 8 can reliably pull the slider 4. On the other hand, since the guide passage 51 is provided in the present embodiment, the first wire 8 can be flexibly routed through the guide passage 51 (it is expected that the first wire 8 can be routed only vertically or slightly at an inclined angle but substantially vertically if the guide passage 51 is not provided, because the sliding member 4 cannot be pulled to slide downward once the horizontal pulling force of the first wire 8 on the sliding member 4 is too large). In this embodiment, the first pull wire 8 passes through the guide channel 51 from the first end thereof, bends and extends in the left-right direction, and then the first pull wire 8 may extend along the vertical rod of the side rail of the crib and extends all the way to the bottom frame of the crib to be connected with the lifting and turning mechanism. Meanwhile, it is noted that, since the guide channel 51 is of a tunnel-like structure, the guide channel 51 can also limit the first pull wire 8, so as to prevent the first pull wire 8 from being wound with other components due to factors such as shaking and stretching.

In other embodiments, a ninety-degree arc channel may be further connected below the vertical guide channel 51, and the first wire 8 may be guided to extend in the left-right direction through the arc channel after passing through the vertical guide channel 51 from the first end thereof, so as to ensure that the first wire 8 does not deviate in the direction of the curve.

In this embodiment, the guide holder 5 is a separate structure from the joint base 31, but is fixedly connected to the joint base 31. In other embodiments, a guide seat may be integrally formed on the joint base 31, and the guide seat has a guide channel 51 therein.

Referring to fig. 3, 5 and 6, the foldable cross bar further includes a second pull wire 9 and a third pull wire 10, the first end of the second pull wire 9 is connected to the first folding bar 1, the second end of the second pull wire 9 extends away from the first folding bar 1, the first end of the third pull wire 10 is connected to the second folding bar 2, the second end of the third pull wire 10 extends away from the second folding bar 2, and the second ends of the second pull wire 9 and the third pull wire 10 are used for external force application to pull the first folding bar 1 and the second folding bar 2 to perform relatively-unfolded pivoting. That is, after the slider 4 is unlocked, the first folding bar 1 and the second folding bar 2 can be pulled to fold by pulling the second pull wire 9 and the third pull wire 10. For example, the second end of the second pull wire 9 and the second end of the third pull wire 10 may be externally suspended for manual pulling, or may be connected to the bottom frame of the crib, and when the lifting and folding mechanism is operated to fold the bottom frame of the crib, the second pull wire 9 and the third pull wire 10 synchronously drive the first folding rod 1 and the second folding rod 2 to unfold, so that the unfolding operation of the crib is simplified.

The joint matrix 31 is provided with a turning roll shaft 23 with a fixed axis, the first end of the second stay wire 9 is connected to the first folding rod 1 which is relatively positioned at the left side, the first end of the third stay wire 10 is connected to the second folding rod 2 which is relatively positioned at the right side, the second stay wire 9 firstly vertically extends along the up-down direction from the first end of the second stay wire to bypass the turning roll shaft 23 and then horizontally extends to the right, and the third stay wire 10 firstly vertically extends along the up-down direction from the first end of the third stay wire to bypass the turning roll shaft with the same structure and then horizontally extends to the left.

The second pull wire 9 and the third pull wire 10 can be turned to the vertical direction through the turning roll shaft so as to apply force to the first folding rod 1 and the second folding rod 2 conveniently, but the turning roll shaft cannot limit the second pull wire 9 and the third pull wire 10, and the second pull wire 9 and the third pull wire 10 are easy to deviate in the axial direction of the turning roll shaft to form winding with other parts. Therefore, in this embodiment, the guide seat 5 is provided with a first limiting channel 52 and a second limiting channel 53 extending in the left-right direction, and the second pull wire 9 and the third pull wire 10 respectively pass through the first limiting channel 52 and the second limiting channel 53. The second stay wire 9 and the third stay wire 10 are limited by the first limiting channel 52 and the second limiting channel 53 respectively. In other embodiments, a guide channel structure similar to the guide channel 51 may be provided at the position of the direction-changing roller shaft or an annular groove may be provided on the surface of the direction-changing roller shaft to limit the second wire 9 and the third wire 10, but the first limiting channel 52 and the second limiting channel 53 are further formed by using the guide holder 5 in this embodiment, so that the structure of the direction-changing roller shaft may be simplified.

Two grooves 520 and 530 with opposite openings are arranged on the guide seat 5, a buckle plate 21 with a clamping hook is buckled and fixed on the guide seat 5, and the clamping hooks 211 and 212 of the buckle plate are respectively inserted into the grooves 520 and 530 to respectively form the first limiting channel 52 and the second limiting channel 53. By this arrangement, the second wire 9 and the third wire 10 can be put into the grooves 520 and 530, and then the buckle 21 is attached, thereby simplifying the installation process.

And, referring to fig. 5, a reinforcing rib 44 is provided on the slider 4 to improve its strength. The slider 4 is further provided with a bump 43, and the bump 43 is used for abutting against the joint base 31 to limit the width direction of the slider 4, thereby improving the position reliability of the slider 4.

In addition to the pull wires, the first pull wire 8, the second pull wire 9 and the third pull wire 10 can be replaced by other continuous linear pull force transmission mechanisms in other embodiments, for example, each folding line segment of the pull wire is replaced by a rigid straight rod, each folding line segment of the pull wire is replaced by a connecting rod/rotating disc linkage structure, namely, a plurality of rigid straight rods are connected in sequence, and the connecting parts adopt the connecting rod/rotating disc linkage structure to carry out pull force linkage, so that the structure is also feasible, but the structure is not as easy to be folded as a flexible pull wire when the baby crib is folded, and the weight is also larger.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. The utility model provides a folding horizontal pole of crib side rail, includes first folding pole, second folding pole and locates the folding joint between first folding pole and the second folding pole, folding joint includes the joint base member, thereby first folding pole and second folding pole pin joint respectively are in both ends can pivot in order to expand or fold relatively about the joint base member, its characterized in that: the folding joint further comprises a locking mechanism, the locking mechanism comprises a sliding block, the sliding block is provided with a sliding stroke for locking or unlocking the first folding rod and the second folding rod to be folded relatively in the up-down direction, the unlocking is achieved by pulling the sliding block to slide downwards, the folding joint further comprises a guide channel fixed with the joint base body, the guide channel comprises a vertical channel extending in the up-down direction, the vertical channel is used for a continuous linear tension transmission mechanism to pass through, a first end of the tension transmission mechanism is fixedly connected with the sliding block, and a second end of the tension transmission mechanism extends away from the folding joint for external force application, so that a second end of the continuous linear transmission mechanism is pulled to pull the sliding block.

2. The foldable rail of the crib siderail of claim 1, wherein: the tension transmission mechanism is a first stay wire.

3. The foldable rail of the crib siderail of claim 2, wherein: the first pull wire passes through the vertical channel from the first end of the first pull wire, is bent and then extends along the left-right direction.

4. A foldable rail for a crib siderail as in claim 3 wherein: the guide channel further comprises an arc bending channel which is connected with the vertical channel and has ninety degrees of radian, and the stay wire is guided to extend in the left-right direction through the arc bending channel after passing through the vertical channel from the first end of the stay wire.

5. A foldable rail for a crib siderail according to claim 1 or 3 wherein: the folding joint further comprises a guide seat fixed with the joint base body, the sliding block and the guide seat are arranged in a vertically aligned mode, the guide channel is arranged on the guide seat, and the sliding block is in sliding connection with the joint base body or in sliding connection with the guide seat.

6. The foldable rail of the crib siderail of claim 5, wherein: the folding device comprises a first folding rod, a second stay wire, a third stay wire, a first stay wire, a second stay wire, a third stay wire and a third stay wire, wherein the first end of the second stay wire is connected to the first folding rod, the second end of the second stay wire extends away from the first folding rod, the second end of the third stay wire extends away from the second folding rod, and the second end of the second stay wire and the second end of the third stay wire are used for being applied with external force to respectively pull the first folding rod and the second folding rod to perform relatively unfolded pivoting.

7. The foldable rail of the crib siderail of claim 6 wherein: the joint matrix is provided with a turning roll shaft with a fixed axis, a first end of a second stay wire is connected to the first folding rod which is relatively positioned at the left side, a first end of a third stay wire is connected to the second folding rod which is relatively positioned at the right side, the second stay wire vertically extends from the first end of the second stay wire along the up-down direction first, bypasses the turning roll shaft and then horizontally extends to the right, and the third stay wire vertically extends from the first end of the third stay wire along the up-down direction first, bypasses the turning roll shaft and then horizontally extends to the right.

8. The foldable rail of the crib siderail of claim 7 wherein: the guide seat is provided with a first limiting channel and a second limiting channel which extend along the left-right direction, and the second stay wire and the third stay wire respectively penetrate through the first limiting channel and the second limiting channel.

9. The foldable rail of claim 8, wherein the crib siderail is foldable: the guide seat is provided with two grooves with opposite openings, the buckle plate with the clamping hooks is buckled and fixed on the guide seat, and the clamping hooks of the buckle plate are inserted into the two grooves to respectively form the first limiting channel and the second limiting channel.

10. The foldable rail of the crib siderail of claim 1, wherein: the locking mechanism further comprises a first limiting pin and a second limiting pin, wherein a first transverse groove and a second transverse groove which extend left and right are formed in the joint base body, the first transverse groove and the second transverse groove are respectively close to the first folding rod and the second folding rod and are bilaterally symmetrical, a first chute and a second chute which extend obliquely and are bilaterally mirror symmetrical are arranged on the sliding block, the first limiting pin is simultaneously in sliding fit in the first transverse groove and the first chute, the second limiting pin is simultaneously in sliding fit in the second transverse groove and the second chute, and accordingly the up-down sliding of the sliding block is converted into the sliding that the first limiting pin and the second limiting pin are synchronously far away from or close to each other in the left-right direction, so that the relative folding pivoting of the first folding rod and the second folding rod can be simultaneously locked or unlocked.

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