A telescopic roof frame

Abstract

The present invention relates to a telescopic ceiling frame, the main body of which includes two groups of four-linkage groups with overlapping central axes, namely a first linkage group and a second linkage group; the first linkage group and the second linkage group are mutually displaced, the central axis hinge point of the first linkage group is aligned with the side hinge point of the second linkage group, the central axis hinge point of the second linkage group is aligned with the side hinge point of the first linkage group, and a crossbar is hinged on the central axis hinge point, the two ends of the crossbar pass through the sliding sleeves arranged on the side hinge points, and the sliding sleeves form support for both sides of the crossbar; the main body is provided with at least one fixed end, and can be positioned on an object with the help of the fixed end. The present invention cleverly adopts two groups of four-linkage groups to be staggered and crossed to form support in the telescopic direction, and has stronger rigidity, larger support area and better wind resistance.

Description

Technical field:

[0001] The invention belongs to the field of sheds, and in particular relates to a telescopic shed frame, in particular a telescopic and folding function formed by four connecting rods. Background technology:

[0002] Most of the existing telescopic ceilings or tents use a four-bar linkage to achieve a wider range of telescopic functions. The four-bar linkage is composed of two cross-hinged rods, with a central axis hinge point on the central axis and side hinge points on the two sides. The telescopic range in the direction of the central axis is the largest. The combination of more than one four-bar linkage can enlarge the extension multiple.

[0003] For example, Chinese patent CN03239557.4 discloses a straight telescopic shop door awning, which has no less than two four-link support arms, the fixed end of the link at the inner end of the four-link support arm is hinged on the fixed mounting seat, and the movable end of the link is stuck in the slide slot hole of the fixed mounting seat and can move along the slide slot hole to extend or retract the four-link support arm, and the awning is placed on the four-link support arm; a horizontal support rod can be provided between the above four-link support arms. In this structure, the four-link support arm is vertically distributed, mainly used to support the awning top and the horizontal support rod, and it also blocks the sight space on both sides. This is also the defect of this type of technology.

[0004] Another example: CN200820145436.X discloses a car awning device, including a fixed bracket, a motor, a telescopic bracket and a sunshade cloth; the fixed bracket is installed on the top of the car, and a telescopic bracket that can be extended and retracted in the front and rear directions is also installed on the fixed bracket; the telescopic bracket is composed of a plurality of pairs of cross rods that are cross-pivoted in pairs and then pivoted end to end in sequence; the motor drives the telescopic bracket to telescope and move; the two ends of the sunshade cloth are respectively fixed to the two ends of the telescopic bracket, and expand or contract with the telescopic bracket. The telescopic function is realized by pivoting the ends of the plurality of pairs of cross rods to form a four-bar linkage mechanism, but the telescopic bracket needs to be supported in the air by the end-to-end pivoting parts, and the rigidity strength of the side hinge points is relatively high, and the deflection problem is easy to occur at the pivot point of the two cross rods, that is, the central axis hinge point, and the wind resistance is poor.

[0005] How to overcome the shortcomings of the prior art and provide a retractable ceiling frame with no obstructions on both sides and strong supporting capacity has become the research object of the present invention. Summary of the invention:

[0006] The purpose of the invention is to design a telescopic ceiling frame which is hinged by two groups of four-link groups to form a telescopic main body and the width of the main body is supported by a cross bar.

[0007] The technical solution of the present invention is implemented as follows: a telescopic ceiling frame includes a four-bar linkage, which is composed of rods cross-hinged in pairs, and has a central axis hinge point on the central axis, and the two side edges are side hinge points; it is characterized in that: the main body includes two groups of four-bar linkages with overlapping central axes, namely a first linkage group and a second linkage group; the first linkage group and the second linkage group are staggered with each other, the central axis hinge point of the first linkage group is aligned with the side hinge point of the second linkage group, the central axis hinge point of the second linkage group is aligned with the side hinge point of the first linkage group, and a cross bar is hinged on the central axis hinge point, the two ends of the cross bar pass through the sliding sleeves arranged on the side hinge points, and the sliding sleeves form support for the two sides of the cross bar; the main body is provided with at least one fixed end, and can be positioned on an object with the help of the fixed end.

[0008] The fixed end of the main body is a double crossbar structure, having an upper crossbar and a lower crossbar locked into one body; the central axis hinge point of the first connecting rod group and the side hinge point of the second connecting rod group are selectively positioned on the upper crossbar and the lower crossbar.

[0009] The fixed end of the main body comprises a lower cross bar as the main rod and an upper cross bar as the auxiliary rod. The second connecting rod group with the side hinge point and the lower cross bar as the movably positioned main rod group has a circular structure in cross section. The first connecting rod group is the auxiliary rod group, and the cross section of a pair of rods hinged to the upper cross bar is a flat structure, and the cross sections of the remaining rods are all circular structures.

[0010] A hinge point is also arranged between the mutually intersecting rods of the first connecting rod group and the second connecting rod group.

[0011] The rods in the first connecting rod group and the second connecting rod group are both in arc shape, and the upper cross bar and the lower cross bar are parallel straight rods.

[0012] The rods in the first link group and the second link group are both in arc shape, and the upper cross bar is also in an arc structure, and the curvature is equivalent to that of the rods in the first link group and the second link group, and they are both in an upward arch shape when retracted into place.

[0013] The fixed end of the main body is also provided with a hanging part, and the hanging part is one of the following structures: 1. A positioning plate with bolt holes, which are respectively locked between the upper and lower cross bars, and are directly locked to the surface of the object with the help of the positioning plate; 2. A plastic part with a socket, which is locked downward on the upper cross bar or the lower cross bar with the socket, and is sleeved on the upper end of the upright rod of the object with the help of the plastic part; 3. A self-contained support rod, a pair of plastic parts are locked at symmetrical positions on the upper cross bar or the lower cross bar, an arc groove is provided on the opposite side of the plastic part, and a support rod is hinged at the lower end of the center line of the arc groove, the support rod swings outward to open, and can fit in the arc groove to form an upright limit; it swings inward to fold and can be close together with the lower cross bar.

[0014] The side hinge point of the second connecting rod group is movably positioned with the lower cross bar, which means that it is mounted on the lower cross bar through a rod sleeve, and the ends of the two rod members in the second connecting rod group are correspondingly hinged on their respective rod sleeves; a long slot hole is formed on the rod sleeve, which can be shifted up and down relative to the lower cross bar to adapt to the position change of the end of the adaptive rod member.

[0015] The cross bar is a round bar formed of glass fiber.

[0016] The present invention cleverly adopts two groups of four-link groups that are staggered and crossed to form support in the telescopic direction, which has stronger rigidity, larger support area and better wind resistance; and the cross bar is positioned on the two groups of aligned hinge points, which not only provides support and positioning points for the cross bar, but also forms a connection between the two groups of rods. The cross bar supports the width of the main body to meet the need for large-area shielding, and after contraction, it can be close together with the connecting rod group, occupying a small space. Description of the drawings:

[0017] The present invention will be further described below in conjunction with specific illustrations:

[0018] Figure 1 Schematic diagram of the retractable ceiling frame

[0019] Figure 2 A top view of the retractable ceiling frame

[0020] Figure 3 Schematic diagram of the side view of the telescopic roof frame extending

[0021] Figure 4 Schematic diagram of the side view of the retractable ceiling frame

[0022] Figure 5 Schematic diagram of the retractable ceiling frame in the retracted state

[0023] Figure 6 for Figure 5 A partial enlarged schematic diagram

[0024] Figure 7 Schematic diagram of the telescopic ceiling frame retracting from top view

[0025] in

[0026] 1—first connecting rod group 10—second connecting rod group 11—rod 12—central axis hinge point

[0027] 13 - side hinge point 14 - flat rod 15 - rod sleeve 151 - long slot hole

[0028] 2—cross bar 21—upper cross bar 22—lower cross bar 3—sliding sleeve

[0029] 4—fixed end 5—support rod 51—plastic part 52—arc groove Specific implementation method:

[0030] Reference Figures 1 to 7 The telescopic ceiling frame has two sets of four-linkage groups with overlapping central axes, namely the first linkage group 1 and the second linkage group 10; the four-linkage group is composed of two cross-hinged rods 11 to form a parallelogram, which can be telescopic along the central axis, and the hinge points on the central axis are the central axis hinge points 12, and the hinge points on the two side edges are the side hinge points 13. Figure 2 Since the central axis hinge point 12 is blocked by the plastic part of the hinged cross bar 2 and the side hinge point 13 is blocked by the sliding sleeve 3 of the positioning cross bar 2, the figure shows the positions of the central axis hinge point 12 and the side hinge point 13, rather than the plastic parts in the above figure.

[0031] The central axes of the first connecting rod group 1 and the second connecting rod group 10 overlap and are mutually dislocated, that is, the central axis hinge point 12 of the first connecting rod group is aligned with the side hinge point 13 of the second connecting rod group, and the central axis hinge point 12 of the second connecting rod group is aligned with the side hinge point 13 of the first connecting rod group, and a cross bar 2 is hinged on the central axis hinge point 12, and the two ends of the cross bar 2 pass through the sliding sleeves 3 set on the side hinge points 13, and the sliding sleeves support the two sides of the cross bar 2, and the cross bar 2 can support a wider range; because the middle point of the cross bar 2 is hinged on the central axis hinge point 12, the balance of the two sides can be maintained, and the sliding sleeves 3 on the side hinge points 13 can slide along the cross bar 2 during contraction, without hindering the telescopic operation of the main body. For this reason, the cross bar 2 can be selected as a round rod formed of glass fiber, which not only maintains sufficient support strength but also has a lighter weight.

[0032] 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 a vertical rod, by means of the fixed end.

[0033] Furthermore, a hinge point is also provided between the rods 11 intersecting each other between the first connecting rod group 1 and the second connecting rod group 10, so as to improve the correlation between the two groups of rods, make the main body more stable, and not hinder the telescopic operation.

[0034] Furthermore, the fixed end of the main body is a double crossbar structure, having an upper crossbar 21 and a lower crossbar 22 locked into one; the central axis hinge point 12 of the first connecting rod group 1 and the side hinge point 13 of the second connecting rod group 10 are selectively positioned on the upper crossbar 21 and the lower crossbar 22, that is, the ends of the first connecting rod group 1 and the second connecting rod group 10 are correspondingly positioned on the upper and lower crossbars, and the fixed ends form a triangular support when viewed from the side, so that the suspension is more reliable and stable. Figure 5 and Figure 6 .

[0035] More specifically, the main fixed end of the main body is composed of the lower cross bar 22 as the main rod group and the upper cross bar 21 as the auxiliary rod group. The second connecting rod group 10 with the side hinge point 13 and the lower cross bar 22 movably positioned is selected as the main rod group. The cross sections of the rods 11 that make up the connecting rod group are all circular structures. The circular rods 11 have uniform strength and are heavy-duty. By using the separated side hinge points 13 at the fixed end, a wider support can be obtained. The first connecting rod group 1 is the auxiliary rod group, and the cross sections of the pair of rods hinged to the upper cross bar 21 are flat structures, that is, flat rods 14 are used, and the cross sections of the remaining rods are all circular structures, the same as the second connecting rod group 10. The first connecting rod group 1 uses a pair of flat rods 14 at the fixed end, which have good deformability. When the upper cross bar 21 and the lower cross bar 22 have a wider design spacing, deformation is used to meet the position avoidance of opening and contraction. The larger the design spacing between the upper cross bar 21 and the lower cross bar 22, the better the suspension and wind resistance effects. Figure 1 , Figure 3 and Figure 4 .

[0036] On the contrary, the upper cross bar 21 can be the main one and the lower cross bar 22 can be the auxiliary one. The second connecting rod group 10 can be the main rod group, which is hinged on the upper cross bar 21, and the first connecting rod group 1 can be the auxiliary rod group, which is hinged on the lower cross bar 22. A pair of flat rods 14 of the first connecting rod group can be used to form a support from below.

[0037] In this example, the upper crossbar 21 is an arc-shaped structure with two ends hinged to the lower crossbar 22, which only needs to be bent without much processing. There is only one hinge point between the upper crossbar 21 and the first connecting rod group 1, so the upper crossbar 21 can also be replaced by a short rod or plastic part standing in the middle of the lower crossbar 22. Similarly, it can also be in a downward direction to be hinged to a single hinge point at the bottom.

[0038] To sum up, among the fixed ends 4, the main lower cross bar or upper cross bar must be a straight rod, so that the hinge points 13 on both sides of the second connecting rod group can slide on the rod to complete the telescopic action; and the auxiliary upper cross bar or lower cross bar can be a straight rod, an arc-shaped rod or a fixed point, but the arc-shaped rod is better, and the two ends are directly hinged to the straight rod to keep the fixed end with a complete vertical surface; the straight rod is second, and its two ends need to be locked with additional plastic parts, and a single fixed point is the most economical, but only one rod is left as the fixed end, which is too flexible to maintain a fixed angle.

[0039] In addition to the arc-shaped structure of the upper cross bar 21, the rods 11 in the first link group 1 and the second link group 10 are also arc-shaped, and the curvature of the rods 11 in the first link group and the second link group is equivalent to that of the upper cross bar 21. After contraction, the whole is in an arc shape, and after opening, the main body is also in an arc shape along the central axis direction, such as Figure 5 It has the functions of water drainage, windproof and flipping, and its curved appearance is full of curvaceous beauty.

[0040] Furthermore, the side hinge point 13 of the second connecting rod group 10 is movably positioned with the lower cross bar 22, which means that it is sleeved on the lower cross bar 22 through a rod sleeve 15, and the ends of the two rod members 11 in the second connecting rod group are correspondingly hinged on their respective rod sleeves 15; a long slot hole 151 is formed on the rod sleeve 15, which can be shifted up and down relative to the lower cross bar 22, and the position change of the end of the adaptive rod member during the opening and contraction process.

[0041] Furthermore, the main body fixed end 4 is also provided with a hanging member, and the hanging member has the following structure:

[0042] 1. With its own support rod 5, a pair of plastic parts 51 are locked in the symmetrical position of the upper crossbar 21 or the lower crossbar 22, and an arc groove 52 is set on the opposite side of the plastic part, and a support rod 5 is hinged at the lower end of the center line of the arc groove 52. The support rod 5 swings outward to open and fits in the arc groove 52 to form an upright limit; it swings inward to fold and can be together with the lower crossbar 22. The telescopic ceiling frame with its own support rod 5 is very suitable for use with folding chairs and folding beds. Two support rods 5 are directly inserted into the sleeves reserved in the backrest rod or the head of the bed to achieve detachable assembly, meeting the needs of sunshade and rain protection for sitting or lying.

[0043] 2. A plastic part with a socket, which is locked downward on the upper cross bar 21 or the lower cross bar 22, or on both, and is sleeved on the upper end of the upright rod of the object; contrary to the above-mentioned usage state, an upright rod is reserved on the fixed object, and the plastic part is directly inserted into the upper end of the upright rod by using the socket with a downward direction to form a support and positioning, which can be used as a landscape awning in fixed occasions such as terraces and plank roads.

[0044] 3. A positioning plate with bolt holes, which is locked between the upper and lower cross bars respectively, not only serves to fix the rods, but can also be used to directly lock the positioning plate on the surface of an object, such as a wall facade, as a doorway.

[0045] In addition to setting a fixed end 4 at a single end, the telescopic roof frame body can also be set at both ends as fixed ends. After being stretched out, both ends can get corresponding support, which can expand the telescopic range of the body and serve as a tent or outdoor awning.

Claims

1. A telescopic ceiling frame, comprising a four-link group, the four-link group is composed of rods (11) cross-hinged in pairs, and the central axis has a central axis hinge point (12), and the two side edges are side hinge points (13); characterized in that: The main body comprises two groups of four-link groups with overlapping central axes, namely a first link group (1) and a second link group (10); the first link group (1) and the second link group (10) are offset from each other, the central axis hinge point (12) of the first link group (1) is aligned with the side hinge point (13) of the second link group (10), the central axis hinge point (12) of the second link group (10) is aligned with the side hinge point (13) of the first link group (1), and a cross bar (2) is hinged on the central axis hinge point (12), the two ends of the cross bar (2) pass through a sliding sleeve (3) arranged on the side hinge point (13), and the sliding sleeve (3) forms support for both sides of the cross bar (2); the main body is provided with at least one fixed end (4), and can be positioned on an object with the help of the fixed end (4).

2. A telescopic ceiling frame according to claim 1, characterized in that: The fixed end (4) of the main body is a double crossbar structure, having an upper crossbar (21) and a lower crossbar (22) that are locked into one body; the central axis hinge point (12) of the first connecting rod group (1) and the side hinge point (13) of the second connecting rod group (10) are selectively positioned on the upper crossbar (21) and the lower crossbar (22).

3. A telescopic ceiling frame according to claim 1 or 2, characterized in that: The second connecting rod group (10) in the fixed end (4) of the main body has a lower cross bar (22) as the main rod group and an upper cross bar (21) as the auxiliary rod group. The side hinge point (13) is movably positioned with the lower cross bar (22) and is the main rod group. The cross sections of the rods (11) constituting the connecting rod group are all circular structures. The first connecting rod group (1) is the auxiliary rod group. The cross sections of a pair of rods (11) hinged to the upper cross bar (21) are flat structures, and the cross sections of the remaining rods (11) are all circular structures.

4. A telescopic ceiling frame according to claim 1 or 2, characterized in that: A hinge point is also provided between the rods (11) intersecting each other of the first connecting rod group (1) and the second connecting rod group (10).

5. The telescopic ceiling frame according to claim 3, characterized in that: The rods (11) in the first connecting rod group (1) and the second connecting rod group (10) are both in an arc shape, and the upper cross bar (21) and the lower cross bar (22) are parallel straight rods.

6. The telescopic ceiling frame according to claim 3, characterized in that: The rods (11) in the first connecting rod group (1) and the second connecting rod group (10) are both in an arc shape, and the upper cross bar (21) is also in an arc structure, and has a curvature equivalent to that of the rods (11) in the first connecting rod group (1) and the second connecting rod group (10), and both are in an upward arch shape when retracted into place.

7. The telescopic ceiling frame according to claim 3, characterized in that: The fixed end (4) of the main body is also provided with a hanging member, which is one of the following structures:

1. a positioning plate with bolt holes, the positioning plate is respectively locked between the upper and lower cross bars (21) and (22), and is directly locked to the surface of the object by means of the positioning plate; 2. a plastic part (51) with a plug hole, the plug hole of the plastic part (51) is locked on the upper cross bar (21) or the lower cross bar (22) downward, and is sleeved on the upper end of the upright rod of the object by means of the plastic part (51); 3. , with a supporting rod (5), a pair of plastic parts (51) are locked at symmetrical positions of the upper cross bar (21) or the lower cross bar (22), an arc groove (52) is arranged on the opposite side of the plastic part (51), and a supporting rod (5) is hinged at the lower end of the center line of the arc groove (52), the supporting rod (5) can be swung outward to open, and can fit in the arc groove (52) to form an upright limit; it can be swung inward to fold and can be close together with the lower cross bar (22).

8. The telescopic ceiling frame according to claim 3, characterized in that: The side hinge point (13) of the second connecting rod group (10) is movably positioned with the lower cross bar (22), which means that a rod sleeve (15) is sleeved on the lower cross bar (22), and the ends of the two rod members (11) in the second connecting rod group (10) are correspondingly hinged on their respective rod sleeves (15); the rod sleeve (15) is formed with a long slot hole (151), which can be displaced up and down relative to the lower cross bar (22) to adapt to the position change of the end of the adaptive rod member (11).

9. The telescopic ceiling frame according to claim 1, characterized in that: The crossbar (2) is a round rod formed of glass fiber.

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