CN211714750U - Telescopic ceiling frame - Google Patents

Abstract

The utility model relates to a telescopic ceiling frame, the main body of which comprises two four connecting rod groups with overlapped central axes, namely a first connecting rod group and a second connecting rod group; the first connecting rod group and the second connecting rod group are staggered with each other, a hinge point of a middle shaft of the first connecting rod group is aligned with a hinge point of the side edge of the second connecting rod group, a hinge point of a middle shaft of the second connecting rod group is aligned with a hinge point of the side edge of the first connecting rod group, a cross rod is hinged to the hinge point of the middle shaft, two ends of the cross rod penetrate through sliding sleeves arranged on the hinge points of the side edges, and the sliding sleeves support two sides of the cross rod; the main body is at least provided with a fixed end and can be positioned on an object by the fixed end. The utility model discloses adopt crisscross alternately of two sets of four-bar linkage to form ingeniously, form the support of flexible direction, have stronger rigidity, bigger support area and better anti-wind ability.

Description

Telescopic ceiling frame

The technical field is as follows:

the utility model belongs to the rack field, in particular to flexible roof rack, especially adopt the flexible folding function that four connecting rods constitute.

Background art:

most of the existing ceilings or tents with telescopic structures adopt four-bar mechanisms to realize the telescopic function in a wider range. The four-bar mechanism is composed of two bars which are hinged in a crossed way, a middle shaft hinge point is arranged on the middle axis, the two side edges are side hinge points, the stretching range in the direction of the middle axis is the largest, and the stretching times can be amplified by the combination of more than one four-bar mechanism.

Such as: chinese patent CN03239557.4 discloses a straight telescopic store awning, which has at least two four-bar linkage supporting arms, the fixed ends of the inner ends of the four-bar linkage supporting arms are hinged on the fixed mounting seat, the movable ends of the connecting bars are clamped in the sliding slot holes of the fixed mounting seat and can move along the sliding slot holes to stretch out or contract the four-bar linkage supporting arms, and the awning is built on the four-bar linkage supporting arms; a transverse support rod can be arranged between the four connecting rod support arms. In the structure, the four-bar supporting arms are vertically distributed and are mainly used for supporting the sunshade roof and the transverse supporting rods, and the sight line spaces on two sides are also shielded. This is also a drawback of such techniques.

For another example: CN200820145436.X, discloses an automobile awning device, which comprises a fixed support, a motor, a telescopic support and an awning cloth; the fixed bracket is arranged at the top of the automobile, and is also provided with a telescopic bracket which can be telescopic along the front-back direction; the telescopic bracket is formed by hinging a plurality of pairs of cross rods in a pairwise crossing manner and then sequentially hinging the cross rods end to end; the motor drives the telescopic bracket to move in a telescopic way; two ends of the sunshade cloth are respectively fixed at two ends of the telescopic bracket and are unfolded or contracted along with the telescopic bracket. A plurality of pairs of cross rods are pivoted end to form a four-bar mechanism, so that the telescopic function is realized, but the suspension support of the telescopic bracket is maintained according to the pivoting parts of the end and the end, the requirement on the rigidity strength of the hinge point at the side is higher, the problems of easy deflection and the like are caused at the pivot point of the two cross rods, namely the hinge point of a central shaft, and the wind resistance is poor.

How to overcome prior art not enough, provide a both sides do not have the flexible roof rack that shelters from, support capacity is strong, become the utility model discloses the object of research.

The invention content is as follows:

the utility model aims at designing a flexible roof rack which is formed by hinging two groups of four-connecting rod groups in a staggered way into a flexible main body and expanding the width of the main body by a cross rod.

The utility model discloses technical scheme realizes like this: a telescopic ceiling frame comprises a four-connecting-rod group, wherein the four-connecting-rod group consists of two rods which are hinged in a crossed manner, a middle shaft hinge point is arranged on a middle shaft line, and side edge hinge points are arranged at two side edges; the method is characterized in that: the main body comprises two groups of four connecting rod groups with overlapped central axes, namely a first connecting rod group and a second connecting rod group; the first connecting rod group and the second connecting rod group are staggered with each other, a hinge point of a middle shaft of the first connecting rod group is aligned with a hinge point of the side edge of the second connecting rod group, a hinge point of a middle shaft of the second connecting rod group is aligned with a hinge point of the side edge of the first connecting rod group, a cross rod is hinged to the hinge point of the middle shaft, two ends of the cross rod penetrate through sliding sleeves arranged on the hinge points of the side edges, and the sliding sleeves support two sides of the cross rod; the main body is at least provided with a fixed end and can be positioned on an object by the fixed end.

The fixed end of the main body is of a double-cross-bar structure and is provided with an upper cross bar and a lower cross bar which are integrally locked; and the hinge point of the middle shaft of the first connecting rod group and the hinge point of the side edge of the second connecting rod group are selectively positioned on the upper cross rod and the lower cross rod.

The lower cross rod in the fixed end of the main body is a main cross rod, the upper cross rod is an auxiliary cross rod, the side edge hinge point and a second connecting rod group movably positioned with the lower cross rod are main rod groups, and the cross sections of rod pieces forming the connecting rod groups are all circular structures; the first connecting rod group is an auxiliary rod group, the cross sections of a pair of rod pieces hinged with the upper cross rod are of flat structures, and the cross sections of the rest rod pieces are of circular structures.

And a hinge point is also arranged between the mutually crossed rod pieces of the first connecting rod group and the second connecting rod group.

The rod pieces in the first connecting rod group and the second connecting rod group are both arc-shaped, and the upper cross rod and the lower cross rod are parallel straight rod pieces.

The rods in the first connecting rod group and the second connecting rod group are both arc-shaped, the upper cross rod is also arc-shaped, the radian of the upper cross rod is equivalent to that of the rods in the first connecting rod group and the second connecting rod group, and the rods in the first connecting rod group and the second connecting rod group are all in an upper arch shape when being contracted in place.

The main part stiff end still is provided with the pendant, and this pendant is as follows one selection structure: the positioning plate is provided with bolt holes and is respectively locked between the upper cross rod and the lower cross rod, and is directly locked on the surface of an object by virtue of the positioning plate; a plastic part with a jack, wherein the jack of the plastic part is downwards locked on the upper cross rod or the lower cross rod, and the upper end part of the vertical rod part of the object is sleeved by the plastic part; the supporting rods are arranged on the upper cross rod or the lower cross rod, a pair of plastic parts are locked at symmetrical positions of the upper cross rod or the lower cross rod, arc grooves are formed in the opposite sides of the plastic parts, the lower ends of the center lines of the arc grooves are hinged with the supporting rods, the supporting rods swing outwards to be opened and can be attached to the arc grooves to form vertical limiting; swing inward to fold and can be folded together with the lower cross bar.

The side edge hinge point of the second connecting rod group is movably positioned with the lower cross rod, namely the lower cross rod is sleeved with a rod sleeve, and the end parts of two rod pieces in the second connecting rod group are correspondingly hinged on the respective rod sleeves; the rod sleeve is formed with a long slotted hole which can move up and down relative to the lower cross rod and is adaptive to the position change of the end part of the rod piece.

The cross rod is a round rod piece formed by glass fiber.

The utility model skillfully adopts two groups of four-connecting-rod groups which are crossed in a staggered way to form a support in the stretching direction, and has stronger rigidity, larger support area and better wind resistance; the cross rods are positioned on the two groups of aligned hinged points, so that support and positioning points are provided for the cross rods, otherwise, the two groups of rod pieces are associated, the width of the main body is expanded by the cross rods, the requirement of a large-area shade is met, the telescopic rod can be closed together with the connecting rod group after being contracted, and the occupied space is small.

Description of the drawings:

the present invention will be further explained with reference to the following specific drawings:

FIG. 1 is a schematic view of a retractable ceiling frame

FIG. 2 is a schematic top view of the retractable canopy frame

FIG. 3 is a schematic side view of the retractable canopy frame

FIG. 4 is a schematic side view of the retractable canopy frame

FIG. 5 is a schematic view of the retractable canopy frame in a retracted state

FIG. 6 is an enlarged view of part A of FIG. 5

FIG. 7 is a schematic top view of the retractable canopy frame

Wherein

1-first linkage 10-second linkage 11-rod 12-middle shaft hinge point

13-side hinge point 14-flat rod 15-rod sleeve 151-slotted hole

2-cross rod 21-upper cross rod 22-lower cross rod 3-sliding sleeve

4-fixed end 5-support rod 51-plastic piece 52-arc groove

The specific implementation mode is as follows:

referring to fig. 1 to 7, the main body of the retractable ceiling frame includes two sets of four link groups with overlapped central axes, namely a first link group 1 and a second link group 10; the four-link group is a parallelogram formed by two rods 11 hinged in a crossed manner, can stretch out and draw back along a central axis, and is characterized in that a hinge point on the central axis is a hinge point 12 of the central axis and hinge points on two side edges are hinge points 13 of side edges. As shown in FIG. 2, since the middle shaft hinge point 12 is blocked by the plastic part of the hinge cross rod 2, the side hinge points 13 are blocked by the sliding sleeves 3 of the hinge cross rod 2, and the positions of the middle shaft hinge point 12 and the side hinge points 13 are shown in the figure, not referring to the plastic part in the upper drawing.

The central axes of the first connecting rod group 1 and the second connecting rod group 10 are overlapped and staggered with each other, that is, a central axis hinge point 12 of the first connecting rod group is aligned with a side hinge point 13 of the second connecting rod group, a central axis hinge point 12 of the second connecting rod group is aligned with a side hinge point 13 of the first connecting rod group, a cross rod 2 is hinged on the central axis hinge point 12, two ends of the cross rod 2 penetrate through a sliding sleeve 3 arranged on the side hinge point 13, and the sliding sleeve supports two sides of the cross rod 2, so that a wider range can be supported by the cross rod 2; because the 2 intermediate points of horizontal pole are articulated on axis pin joint 12, can keep the balance of both sides, and sliding sleeve 3 on the side pin joint 13 can slide along horizontal pole 2 again during the shrink, does not hinder the flexible operation of main part. For this purpose, the cross-bar 2 can be selected from a round rod of glass fibre shaped, which maintains sufficient support strength and has a low weight.

The main body of the ceiling frame is provided with at least one fixed end 4 and can be positioned on an object, such as a wall fixture or an upright rod, by means of the fixed end.

Further, a hinge point is also arranged between the rod pieces 11 of the first connecting rod group 1 and the second connecting rod group 10 which are mutually crossed, the association degree of the two groups of rod pieces is improved, the main body is more stable, and the telescopic operation is not hindered.

Further, the fixed end of the main body is of a double-cross-bar structure and is provided with an upper cross bar 21 and a lower cross bar 22 which are integrally locked; the middle shaft hinge point 12 of the first linkage 1 and the side hinge point 13 of the second linkage 10 are selectively positioned on the upper cross bar 21 and the lower cross bar 22, that is, the end parts of the first linkage 1 and the second linkage 10 are correspondingly positioned on the cross bars in upper and lower borrowing positions, and the fixed end forms a triangular support when viewed from the side, so that the suspension is more reliable and stable, as shown in fig. 5 and 6.

More specifically, the fixed end of the main body is mainly composed of a lower cross bar 22 and an upper cross bar 21, the second connecting rod group 10 movably positioned by the side hinge points 13 and the lower cross bar 22 is selected as a main rod group, and the cross sections of the rod pieces 11 forming the connecting rod group are all circular structures; the round rod piece 11 has even strength and heavy bearing capacity, and wider support can be obtained by using a separated side hinge point 13 at the fixed end; the first link group 1 is an auxiliary link group, and the cross sections of a pair of link members hinged with the upper cross bar 21 are flat structures, that is, flat bars 14 are adopted, and the cross sections of the other link members are circular structures, which are the same as the second link group 10. The first link group 1 uses a pair of flat rods 14 at the fixed end, which have good deformability, and which are deformed to meet the positional relief of opening and contraction when the upper rail 21 and the lower rail 22 have a wide design spacing. And the larger the designed distance between the upper cross bar 21 and the lower cross bar 22 is, the better the suspension and wind resistance thereof are, as shown in fig. 1, 3 and 4.

Conversely, the upper cross bar 21 may be the main bar, the lower cross bar 22 may be the auxiliary bar, the second linkage 10 may be the main bar, and hinged to the upper cross bar 21, and the first linkage 1 may be the auxiliary bar, and hinged to the lower cross bar 22, and the pair of flat bars 14 of the first linkage may be used to support from below.

In this example, the upper cross bar 21 is in an arched structure, and two ends of the upper cross bar are hinged to the lower cross bar 22, so that the upper cross bar can be bent without excessive processing. There is only one hinge point between the upper cross bar 21 and the first linkage 1, for which purpose the upper cross bar 21 can also be replaced by a short bar or plastic standing straight in the middle of the lower cross bar 22. Likewise, it may be in a downward direction for hinging a single hinge point below.

In summary, the lower cross bar or the upper cross bar, which is the main cross bar, of the fixed end 4 must adopt a straight rod member, so that the hinge points 13 at two sides of the second linkage group can slide on the rod member to complete the telescopic action; the upper cross bar or the lower cross bar serving as the auxiliary cross bar can be a straight bar piece, an arc-shaped bar piece or a fixed point, but the arc-shaped bar piece is preferably used, two ends of the arc-shaped bar piece are directly hinged with the straight bar piece, and the fixed end can be kept to have a complete vertical surface; the straight rod is adopted, two ends of the straight rod need to be additionally locked by plastic parts, the single fixing point is saved most, but only one rod is reserved as the fixing end, and the fixing angle is difficult to maintain flexibly.

Except that the upper cross rod 21 is of an arched structure, the rod pieces 11 in the first connecting rod group 1 and the second connecting rod group 10 are also of an arched shape, the radian of the rod pieces 11 in the first connecting rod group and the second connecting rod group is equivalent to that of the upper cross rod 21, the whole body is of an arched shape after being contracted, and after the main body is opened, the main body is also of an arched shape along the direction of a central axis, as shown in fig. 5, the water drainage and wind prevention turning device has the advantages of water drainage and wind prevention turning, and the arched appearance is rich in curved beauty.

Then, the side hinge point 13 of the second linkage 10 is movably positioned with the lower cross bar 22, that is, the lower cross bar 22 is sleeved with a bar sleeve 15, and the end parts of the two bars 11 in the second linkage are correspondingly hinged on the respective bar sleeves 15; the rod sleeve 15 is formed with a slotted hole 151 which can move up and down relative to the lower cross rod 22 to adapt to the position change of the rod end in the opening and contraction process.

Further, the body fixing end 4 is further provided with a suspension member, and the suspension member has the following structure:

firstly, a pair of plastic parts 51 are fixedly locked at symmetrical positions of an upper cross bar 21 or a lower cross bar 22, an arc-shaped groove 52 is arranged at one side of the plastic part opposite to the other side, a support bar 5 is hinged at the lower end of the central line of the arc-shaped groove 52, and the support bar 5 swings outwards to be opened and can be attached in the arc-shaped groove 52 to form vertical limit; swing inward to fold and can be folded together with the lower cross bar 22. The telescopic ceiling frame with the support rods 5 is very suitable for being matched with a folding chair and a folding bed for use, two support rods 5 are directly inserted into a sleeve reserved on a backrest rod or a bed head, detachable assembly is achieved, and the requirements of sitting, lying, sun shading and rain shielding are met.

A plastic part with a jack, wherein the jack of the plastic part is downwards locked on the upper cross rod 21 or the lower cross rod 22, or locked on the upper cross rod and the lower cross rod, and is sleeved at the upper end part of the vertical rod part of the object by virtue of the plastic part; opposite to the using state, the upright member is reserved on the fixed object, the plastic member is provided with a downward insertion hole and is directly inserted into the upper end part of the upright member to form supporting and positioning, and the landscape awning can be used in fixed occasions such as a terrace, a trestle and the like.

And the positioning plate with the bolt holes is respectively locked between the upper cross rod and the lower cross rod, plays a role in fixing the rod piece, and can be directly locked on the surface of an object, such as a wall surface vertical surface, as a door surface eave.

The telescopic ceiling frame main body is provided with a fixed end 4 at one end, and can be provided with fixed ends at two ends, and the two ends can be correspondingly supported after being stretched, so that the telescopic range of the main body can be expanded, and the telescopic ceiling frame main body can be used as a tent or an outdoor awning.

Claims (9)

1. A telescopic ceiling frame comprises a four-connecting-rod group, wherein the four-connecting-rod group consists of two rods (11) which are hinged in a crossed manner, a middle shaft hinge point (12) is arranged on a middle shaft line, and side edge hinge points (13) are arranged at two side edges; the method is characterized in that: the main body comprises two groups of four connecting rod groups with overlapped central axes, namely a first connecting rod group (1) and a second connecting rod group (10); the first connecting rod group (1) and the second connecting rod group (10) are staggered with each other, a middle shaft hinge point (12) of the first connecting rod group (1) is aligned with a side hinge point (13) of the second connecting rod group (10), a middle shaft hinge point (12) of the second connecting rod group (10) is aligned with the side hinge point (13) of the first connecting rod group (1), a cross rod (2) is hinged to the middle shaft hinge point (12), two ends of the cross rod (2) penetrate through sliding sleeves (3) arranged on the side hinge points (13), and the sliding sleeves (3) support two sides of the cross rod (2); the main body is provided with at least one fixed end (4) and can be positioned on an object by means of the fixed end (4).

2. A telescoping ceiling rack as claimed in claim 1, wherein: the fixed end (4) of the main body is of a double-cross-bar structure and is provided with an upper cross bar (21) and a lower cross bar (22) which are integrally locked; and a middle shaft hinge point (12) of the first connecting rod group (1) and a side hinge point (13) of the second connecting rod group (10) are selectively positioned on the upper cross rod (21) and the lower cross rod (22).

3. A telescopic ceiling frame according to claim 1 or 2, characterised in that: a lower cross rod (22) in the main body fixing end (4) is used as a main part, an upper cross rod (21) is used as an auxiliary part, a second connecting rod group (10) with a side hinge point (13) movably positioned with the lower cross rod (22) is used as a main rod group, and the cross sections of rod pieces (11) forming the connecting rod group are all circular structures; the first connecting rod group (1) is an auxiliary rod group, the cross sections of a pair of rod pieces (11) hinged with the upper transverse rod (21) are of a flat structure, and the cross sections of the other rod pieces (11) are of a circular structure.

4. A telescopic ceiling frame according to claim 1 or 2, characterised in that: and a hinge point is also arranged between the rod pieces (11) which are mutually crossed by the first connecting rod group (1) and the second connecting rod group (10).

5. A telescoping ceiling rack as claimed in claim 3, wherein: the rod pieces (11) in the first connecting rod group (1) and the second connecting rod group (10) are both arc-shaped, and the upper cross rod (21) and the lower cross rod (22) are parallel straight rod pieces.

6. A telescoping ceiling rack as claimed in claim 3, wherein: the rods (11) in the first connecting rod group (1) and the second connecting rod group (10) are both arc-shaped, the upper cross rod (21) is also arc-shaped, the radian of the upper cross rod is equivalent to that of the rods (11) in the first connecting rod group (1) and the second connecting rod group (10), and the rods are all arch-shaped when being contracted in place.

7. A telescoping ceiling rack as claimed in claim 3, wherein: the main body fixing end (4) is also provided with a hanging piece which is of one structure as follows: the positioning plate is provided with bolt holes and is respectively locked between the upper cross rod (21) and the lower cross rod (22) and is directly locked on the surface of an object by virtue of the positioning plate; a plastic part (51) with a jack, wherein the jack of the plastic part (51) is downwards locked on the upper cross rod (21) or the lower cross rod (22), and the upper end part of the upright rod part of the object is sleeved by the plastic part (51); thirdly, a pair of plastic parts (51) are fixedly locked at symmetrical positions of the upper cross rod (21) or the lower cross rod (22) from the support rod (5), an arc-shaped groove (52) is formed in one side of the plastic part (51) opposite to the other side, the support rod (5) is hinged to the lower end of the central line of the arc-shaped groove (52), and the support rod (5) swings outwards to be opened and can be attached to the arc-shaped groove (52) to form vertical limit; swing inwards to fold and can be folded together with the lower cross bar (22).

8. A telescoping ceiling rack as claimed in claim 3, wherein: the side hinge point (13) of the second connecting rod group (10) is movably positioned with the lower cross rod (22), namely the lower cross rod (22) is sleeved with a rod sleeve (15), and the end parts of two rod pieces (11) in the second connecting rod group (10) are correspondingly hinged on the respective rod sleeves (15); the rod sleeve (15) is formed with a long slotted hole (151) which can move up and down relative to the lower cross rod (22) and is adaptive to the position change of the end part of the rod piece (11).

9. A telescoping ceiling rack as claimed in claim 1, wherein: the cross rod (2) is a round rod piece formed by glass fiber.

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