CN220192445U - Foldable support frame - Google Patents

Abstract

The utility model discloses a foldable support frame which comprises an objective table, a first support, a second support and a locking structure, wherein the first support is hinged with the middle part of the second support, the top of the first support is rotatably connected with the objective table, a sliding structure is arranged on the objective table, a slideway is arranged on the top of the second support along the length direction of the second support, the sliding structure is in sliding fit with the slideway, and the locking structure is arranged on the second support and is in movable fit with the sliding structure. The sliding structure is limited or unlocked through the locking structure, so that the first support and the second support are unfolded or folded, the operation is more convenient and quick, the folded support frame is convenient to store and carry, and meanwhile, the stability of the support frame during unfolding and using can be guaranteed.

Description

Foldable support frame

Technical Field

The utility model relates to the technical field of brackets, in particular to a foldable supporting frame.

Background

The existing foldable support frame generally comprises a table plate, wherein a hinging seat is arranged at the bottom of the table plate relatively, a U-shaped support is rotatably arranged on the hinging seat, the U-shaped support is rotated, and the rotation angle of the U-shaped support is limited through the hinging seat, so that the table plate and the U-shaped support are kept in an unfolding state; through reverse rotation U-shaped support for two U-shaped supports fold relatively in the table bottom, conveniently accomodate and carry. However, during use, it has been found that the table may be tilted due to a false touch to the U-shaped bracket, resulting in insufficient stability of the table.

To solve this problem, a foldable supporting frame is shown in the market, for example, publication number CN17048692a discloses a foldable standing office desk, which comprises a panel and a foldable bracket connected under the panel, wherein the bracket comprises two pairs of supporting legs, and two supporting legs in each pair of supporting legs are hinged; at least one reinforcing cross rod is connected between the upper ends of the transversely opposite supporting legs; the bottom of the panel is provided with a chute, and at least one reinforcing cross bar is slidably connected with the chute; there is spacing hole in the spout, but is provided with spacing post in the reinforcement horizontal pole with spout sliding connection, still be provided with ejecting device in the reinforcement horizontal pole, spacing hole of size cooperation of spacing post, support expansion and folding in-process, spacing post get into spacing hole locking supporting legs, unblock when spacing post leaves spacing hole, panel bottom still is provided with the mechanism of control ejecting device, panel bottom still is provided with synchro mechanism. Although the support can be ensured to be in a locking state when being unfolded, the stability of the support in use can be improved, but the problems of complex locking structure and inconvenient and rapid operation exist.

To solve at least one of the above problems, the present utility model provides a foldable support frame.

Disclosure of Invention

In view of the above analysis, the present utility model provides a foldable support frame to solve the shortcomings of the prior art.

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

the utility model provides a foldable support frame which comprises an objective table, a first support, a second support and a locking structure, wherein the first support is hinged with the middle part of the second support, the top of the first support is rotationally connected with the objective table, a sliding structure is arranged on the objective table, a slide way is arranged on the top of the second support along the length direction of the second support, the sliding structure is in sliding fit with the slide way, and the locking structure is arranged on the second support and is in movable fit with the sliding structure;

the sliding structure moves to a position close to the top of the slideway and is matched with the locking structure for limiting, so that the first bracket and the second bracket are unfolded and kept in a locking state; the locking structure is matched with the sliding structure to unlock, and the sliding structure slides to the bottom of the slideway along the slideway under the action of gravity of the objective table, so that the first bracket and the second bracket can be folded after the locking state is released.

When the support frame is unfolded and used, the locking structure is matched with the sliding structure, and the position of the sliding structure is limited by the locking structure to be fixed so as to lock the unfolded state of the first support and the second support; when the support frame is folded and stored, the locking structure and the sliding structure are separated, the position of the sliding structure is not limited by the locking structure and can be movably arranged on the slideway so as to unlock the first support and the second support, and the sliding structure slides downwards along the chute under the action of the gravity of the object stage, so that the first support and the second support can be folded.

The sliding structure and the locking structure are locked at a position close to the top of the slideway, so that a space is reserved for unlocking the sliding structure.

Further, the locking structure comprises a mounting seat arranged on the second bracket, a locking block is hinged on the mounting seat, a limiting part positioned above or below the slideway is arranged on the second bracket, and the locking block is in movable fit and propped against the limiting part; the locking block rotates to be crossed with the slideway, the top of the locking block is matched and abutted with the limiting part, the outer end face of the locking block is matched and limited with the sliding structure, and the sliding structure is in a locking state; the locking block rotates to the lower part or the upper part of the slideway to be separated from the slideway, and the sliding structure is in a movable state on the slideway.

By lifting the objective table upwards, when the sliding structure moves upwards to be close to the top of the slideway, the first bracket and the second bracket are unfolded, and the locking block is rotated upwards, so that the outer end surface of the locking block moves towards the limiting part under the gravity acting force of the sliding structure and the objective table, the top of the locking block always keeps abutting against the limiting part, and the fixing of the position of the sliding structure is completed; through upwards lifting the objective table, drive sliding structure and make its upwards move to the slide top, the locking piece can unlock this moment, through the locking piece of downwardly turning, makes it all separate with spacing portion, sliding structure can freely slide to the slide bottom along the slide, and first support and second support fold this moment.

Further, a cavity is arranged in the second support, the slide way is arranged on the side wall of the cavity, a first through hole communicated with the cavity is formed in the bottom surface or the top surface of the second support, the top inner surface or the bottom inner surface of the cavity forms a limiting part, and the locking block is movably arranged on the first through hole and is movably inserted into the second support to be matched with and abutted against the top inner surface or the bottom inner surface of the cavity. So that the operation of the locking structure is simpler.

The second bracket is unfolded to be inclined relative to the horizontal surface, and the locking block can not rotate continuously after being abutted against the top inner surface or the bottom inner surface of the cavity, so that the slideway structure can be locked. When the locking piece has certain weight, drive sliding structure through lifting the objective table and upwards remove in order to unblock locking piece, need not to adjust the locking piece, make it can freely rotate under the effect of gravity to leave the second support cavity from first perforation, first support is folded with the second support for the operation is simpler.

Further, the outer end of the second support is detachably provided with a sealing cover for sealing the opening of the cavity, one side surface of the cavity is provided with a guide rail, the side wall of the guide rail is provided with a slide way, and the other corresponding side wall of the second support is provided with a second perforation which is opposite to the slide way and is used for the sliding structure to pass through. The second bracket is internally provided with the cavity, and the sealing cover is arranged to selectively seal the cavity opening, so that the guide rail is convenient to install.

Further, the sliding structure comprises a positioning seat arranged at the bottom of the objective table, a sliding rod is arranged on the positioning seat, and the sliding rod penetrates through the second through hole and is provided with a bearing in rolling fit with the slideway.

Further, the guide rail is a U-shaped guide rail with two open ends, a third through hole for the sliding rod to pass through is formed in the side wall of the guide rail, a gap is reserved between the upper surface and the lower surface of the outer side wall of the guide rail so as to form a slideway, and a clamping groove matched with the sliding rod is formed in the outer end face of the locking block. Wherein, the bearing can be dismantled with the slide bar and be connected, conveniently install.

The sliding rod is limited by arranging the bearing to be matched with the guide rail, so that the stability of the slideway structure in the use process is improved. During installation, the bearing is arranged on the slideway on the guide rail, and after the guide rail is assembled in the second bracket, the slide bar sequentially penetrates through the side wall of the second bracket and the side wall of the guide rail and is inserted into the mounting hole of the bearing to be fixed.

The sliding rod is in rolling fit with the guide rail through the bearing, so that friction force generated when the slideway structure slides is reduced, and the sliding structure slides more smoothly.

Further, be equipped with reset structure between locking piece and the mount pad for the locking piece keeps supporting with spacing portion cooperation and leans on, the locking piece has the guide surface that is connected rather than outer terminal surface and exists the contained angle, in order to form with the junction of locking piece outer terminal surface the top of locking piece, sliding structure slides to the outer terminal surface of locking piece from the guide surface that sets up with the slide alternately on the slide in order to realize the locking. Wherein the guide surface is preferably an inclined surface.

The reset structure is used for resetting the locking block, the locking block does not need to be rotated when the support frame is unfolded, and when the sliding structure slides to be close to the locking block, the sliding structure slides along the guide surface to press the locking block to enable the locking block to move downwards so as to penetrate through the locking block to be clamped with the clamping groove.

Further, the first support includes two relative first bracing pieces that set up, the bottom of objective table is equipped with articulated seat, articulated seat's both ends rotate with the top of corresponding first bracing piece respectively and are connected, articulated seat and positioning seat parallel arrangement, two be connected through the head rod between the first bracing piece.

Further, the second support includes two relative second bracing pieces that set up, every all be equipped with on the second bracing piece the slide is installed on the second bracing piece at least one locking structure is installed two connect through the second connecting rod between the second bracing piece.

Further, wheels are arranged at the bottom of at least one of the first bracket and the second bracket. Through setting up the wheel, conveniently remove or transport the support frame after folding or expansion for user's use is laborsaving more, in order to improve the experience of using and feel.

Further, a handle is arranged on at least one of the first bracket and the second bracket.

Compared with the prior art, the technical scheme of the utility model has the beneficial effects that:

according to the foldable support frame, the sliding way and the locking structure are arranged on the second support, the sliding structure is limited or unlocked, the first support and the second support are unfolded or folded, the sliding structure is different in movement track from the conventional sliding way arranged on the object stage, the operation is more convenient and rapid, the locking structure is arranged at the bottom of the second support, the position is hidden, the folded support frame is convenient to store and carry, meanwhile, the stability of the support frame during unfolding and using can be guaranteed, and the structure and the installation of the support frame are simpler.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a foldable support frame according to an embodiment of the present utility model when the foldable support frame is unfolded;

fig. 2 is a schematic structural view of a foldable support frame according to an embodiment of the present utility model when the foldable support frame is folded;

FIG. 3 is an exploded schematic view of FIG. 1;

FIGS. 4a-4c are diagrams showing the change of the position states of the locking structure and the sliding rod in the folding process of the support frame;

FIGS. 5a-5c are diagrams showing the change of the position of the locking structure and the sliding rod during the unfolding process of the support frame;

fig. 6 is a sectional view of a second support bar according to an embodiment of the present utility model.

The reference numerals are as follows:

2. the first support, 21, the first support rod, 22, the first connecting rod, 3, the second support, 3a, the slideway, 3b, the limiting part, 3c, the first perforation, 3d, the second perforation, 31, the second support rod, 32, the second connecting rod, 4, the locking structure, 41, the mounting seat, 42, the locking block, 42a, the clamping groove, 42b, the guide surface, 421, the handle, 5, the sliding structure, 51, the positioning seat, 52, the slide bar, 53, the bearing, 6, the sealing cover, 7, the guide rail, 7a, the third perforation, 8, the hinging seat, 9, the wheel, 1 and the handle.

Detailed Description

The utility model will be described in detail below with respect to certain specific embodiments thereof in order to better understand the utility model and thereby to more clearly define the scope of the utility model as claimed. It should be noted that the following description is only some embodiments of the inventive concept and is only a part of examples of the present utility model, wherein the specific direct description of the related structures is only for the convenience of understanding the present utility model, and the specific features do not naturally and directly limit the implementation scope of the present utility model. Conventional selections and substitutions made by those skilled in the art under the guidance of the inventive concept should be considered as being within the scope of the claimed utility model.

The utility model will be further described with reference to the drawings and the specific examples.

Example 1

As shown in fig. 1-4, the utility model provides a foldable supporting frame, which comprises an objective table, a first support 2, a second support 3 and a locking structure 4, wherein the objective table is horizontally arranged, the first support 2 is hinged with the middle part of the second support 3, the top of the first support 2 is rotationally connected with the objective table, a sliding structure 5 is arranged on the objective table, a slideway 3a is arranged on the top of the second support 3 along the length direction of the second support, the sliding structure 5 is in sliding fit with the slideway 3a, and the locking structure 4 is arranged on the second support 3 and is in movable fit with the sliding structure 5.

The sliding structure 5 moves to a position close to the top of the slideway 3a and is matched with the locking structure 4 for limiting, so that the first bracket 2 and the second bracket 3 are unfolded and kept in a locking state; the locking structure 4 and the sliding structure 5 are matched for unlocking, and the sliding structure 5 slides to the bottom position of the slideway 3a along the slideway 3a under the action of the gravity of the object stage, so that the first bracket 2 and the second bracket 3 are folded after the locking state is released.

In some embodiments the bottom of the second bracket 3 is provided with wheels 9, of course in other embodiments the bottom of the first bracket 2 is provided with wheels 9, or the bottoms of both the first bracket 2 and the second bracket 3 are provided with wheels 9.

In some embodiments, the handles 1 are provided on both the first and second brackets 2, 3, although in other embodiments, the handles 1 are provided on the first bracket 2 or the handles 1 are provided on the second bracket 3.

As shown in fig. 6, preferably, the locking structure 4 includes a mounting seat 41 mounted on the second bracket 3, a locking block 42 is hinged on the mounting seat 41, a limiting portion 3b located above the slideway 3a is provided on the second bracket 3, and the locking block 42 is in movable fit and abuts against the limiting portion 3 b.

As shown in fig. 4a-4c and 5a-5c, the locking block 42 rotates to be crossed with the slideway 3a, the top of the locking block 42 is matched and abutted with the limiting part 3b, the outer end surface of the locking block 42 is matched and limited with the sliding structure 5, and the sliding structure 5 is in a locking state; the locking block 42 rotates to the lower part of the slideway 3a to be separated from the slideway 3a, and the sliding structure 5 is in an active state on the slideway 3a.

As another implementation manner, the limiting part may also be disposed below the slideway and located on the bottom inner surface of the cavity, and the locking structure is mounted on the top surface of the second bracket. The locking block rotates to the upper part of the slideway and is separated from the slideway from a first perforation on the top surface of the second bracket; the locking block rotates to cross the slideway and is propped against the inner surface of the bottom of the cavity.

As shown in fig. 3 and 6, specifically, a cavity is formed in the second bracket 3, a slideway 3a is arranged on the side wall of the cavity, a first through hole 3c communicated with the cavity is formed on the bottom surface of the second bracket 3, the top inner surface of the cavity forms a limiting part 3b, and a locking block 42 is movably arranged on the first through hole 3c and is movably inserted into the second bracket 3 to be matched and abutted with the top inner surface of the cavity; the outer end surface of the locking block 42 is provided with a clamping groove 42a matched with the sliding structure 5. To facilitate adjustment of the lock block 42, a handle 421 is provided at the bottom of the lock block 42. When the slideway 3a is arranged on the inner side wall of the cavity, the slideway structure 5 passes through the side wall of one side of the cavity and is arranged on the slideway 3a.

In this embodiment, the outer end of the second bracket 3 is detachably provided with a cover 6 for closing the opening of the cavity, a guide rail 7 is installed on one side surface of the cavity, a slideway 3a is arranged on the side wall of the guide rail 7, and a second perforation 3d opposite to the slideway 3a is arranged on the other corresponding side wall of the second bracket 3 for the sliding structure 5 to pass through. Specifically, a reset structure is arranged between the locking block 42 and the mounting seat 41, so that the locking block 42 is matched and abutted against the limiting part 3b, the locking block 42 is provided with a guide surface 42b connected with the outer end surface of the locking block 42 and provided with an included angle, the connection part with the outer end surface of the locking block 42 forms the top of the locking block 42, and the sliding structure 5 slides on the slideway 3a from the guide surface 42b which is arranged to be intersected with the slideway 3a to the outer end surface of the locking block 42 so as to realize locking. So that the locking block 42 can be quickly reset after adjustment.

In this embodiment, the restoring structure is a torsion spring, the guiding surface 42b is preferably an inclined surface, when the first bracket 2 and the second bracket 3 are unfolded, the sliding rod 52 of the sliding structure 5 moves upward to press the top surface of the locking block 42 to rotate from the first through hole 3c to the outside of the second bracket 3, and when the sliding rod 52 of the sliding structure 5 passes through the locking block 42, the locking block 42 is restored under the action of the torsion spring.

As shown in fig. 3, the sliding structure 5 preferably includes a positioning seat 51 disposed at the bottom of the stage, a sliding rod 52 is disposed on the positioning seat 51, and the sliding rod 52 passes through the second through hole 3d and is detachably provided with a bearing 53 in rolling engagement with the slideway 3a. The guide rail 7 is a U-shaped guide rail with two open ends, a third through hole 7a for the sliding rod 52 to pass through is arranged on the side wall of the guide rail 7, and a gap exists between the upper surface and the lower surface of the outer side wall of the guide rail 7 to form a slideway 3a.

In this embodiment, the sliding rod 52 is disposed opposite to the bottom of the positioning seat 51. The guide rail 7 comprises a plate surface and blocking edges positioned on the upper side and the lower side of the plate surface so as to form a U-shaped guide rail, a strip-shaped sliding hole is formed in the plate surface, and the bearing 53 is arranged between the two blocking edges in a rolling mode.

As shown in fig. 1 and 3, preferably, the first support 2 includes two oppositely disposed first support rods 21, a hinge seat 8 is disposed at the bottom of the object stage, two ends of the hinge seat 8 are respectively rotatably connected with the tops of the corresponding first support rods 21, the hinge seat 8 is disposed parallel to the positioning seat 51, and the two first support rods 21 are connected through a first connecting rod 22.

In this embodiment, the first connecting rod 22 is located at the bottom of the first bracket 2, and is integrally formed with the first supporting rod 21 to form the first bracket 2 having a U shape. The inner sides of the two first support rods 21 are provided with handles 1 above the first connecting rods 22.

Preferably, the second support 3 includes two second support rods 31 disposed opposite to each other, each second support rod 31 is provided with a slideway 3a, at least one second support rod 31 is provided with a locking structure 4, and the two second support rods 31 are connected through a second connecting rod 32.

In this embodiment, the inner side of the first supporting bar 21 is hinged to the outer side of the second supporting bar 31. The locking structure 4 is provided with one. The second connecting rods 32 are respectively arranged at the middle part and the bottom part of the second bracket 3. The wheels 9 are mounted on the two ends 1 of the second connecting rod 32 at the bottom of the second bracket 3.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. A foldable support frame, characterized in that: the device comprises an objective table, a first support (2), a second support (3) and a locking structure (4), wherein the first support (2) is hinged with the middle part of the second support (3), the top of the first support (2) is rotationally connected with the objective table, a sliding structure (5) is arranged on the objective table, a slide way (3 a) is arranged on the top of the second support (3) along the length direction of the second support, the sliding structure (5) is in sliding fit with the slide way (3 a), and the locking structure (4) is arranged on the second support (3) and is in movable fit with the sliding structure (5);

the sliding structure (5) moves to a position close to the top of the slideway (3 a) and is matched with the locking structure (4) to limit, so that the first bracket (2) and the second bracket (3) are unfolded and kept in a locking state; the locking structure (4) is matched with the sliding structure (5) for unlocking, and the sliding structure (5) slides to the bottom of the slideway (3 a) along the slideway (3 a) under the action of the gravity of the object stage, so that the first bracket (2) and the second bracket (3) are folded after the locking state is released.

2. The collapsible support stand of claim 1 wherein: the locking structure (4) comprises a mounting seat (41) arranged on the second bracket (3), a locking block (42) is hinged on the mounting seat (41), a limiting part (3 b) which is arranged above or below the slideway (3 a) is arranged on the second bracket (3), and the locking block (42) is in movable fit and propped against the limiting part (3 b);

the locking block (42) rotates to be crossed with the slideway (3 a), the top of the locking block (42) is matched and abutted with the limiting part (3 b), the outer end surface of the locking block (42) is matched and limited with the sliding structure (5), and the sliding structure (5) is in a locking state; the locking block (42) rotates to the lower part or the upper part of the slideway (3 a) to be separated from the slideway, and the sliding structure (5) is in an active state on the slideway (3 a).

3. The collapsible support stand of claim 2 wherein: the second support (3) is internally provided with a cavity, the slide way (3 a) is arranged on the side wall of the cavity, the bottom surface or the top surface of the second support (3) is provided with a first perforation (3 c) communicated with the cavity, the top inner surface or the bottom inner surface of the cavity is formed into a limiting part (3 b), and the locking block (42) is movably arranged on the first perforation (3 c) and is movably inserted into the second support (3) to be matched with and abutted against the top inner surface or the bottom inner surface of the cavity.

4. A collapsible support stand in accordance with claim 3 wherein: the outer end demountable installation of second support (3) has closing cap (6) that are used for sealing the cavity open-ended, install guide rail (7) on the side of one side of cavity, set up slide (3 a) on the lateral wall of guide rail (7), be equipped with on the another corresponding lateral wall of second support (3) with slide (3 a) relative second perforation (3 d) that sets up, supply sliding structure (5) to pass.

5. The collapsible support bracket of claim 4, wherein: the sliding structure (5) comprises a positioning seat (51) arranged at the bottom of the object stage, a sliding rod (52) is arranged on the positioning seat (51), and the sliding rod (52) penetrates through the second through hole (3 d) and is provided with a bearing (53) in rolling fit with the slideway (3 a).

6. The collapsible support stand of claim 5 wherein: the guide rail (7) is a U-shaped guide rail with two open ends, a third through hole (7 a) for a sliding rod (52) to pass through is formed in the side wall of the guide rail (7), and a gap exists between the upper surface and the lower surface of the outer side wall of the guide rail (7) to form a slideway (3 a); the outer end face of the locking block (42) is provided with a clamping groove (42 a) matched with the sliding rod (52).

7. The collapsible support bracket of any one of claims 2-6, wherein: the locking block (42) is provided with a reset structure between the locking block (42) and the mounting seat (41), the locking block (42) is matched with the limiting part (3 b) to be propped against, the locking block (42) is provided with a guide surface (42 b) which is connected with the outer end surface of the locking block and has an included angle, the top of the locking block (42) is formed at the joint of the locking block (42) and the outer end surface of the locking block, and the sliding structure (5) slides to the outer end surface of the locking block (42) on the slideway (3 a) from a guide surface (42 b) which is arranged to be intersected with the slideway (3 a) so as to realize locking.

8. The collapsible support stand of claim 5 wherein: the first support (2) comprises two oppositely arranged first support rods (21), a hinge seat (8) is arranged at the bottom of the objective table, two ends of the hinge seat (8) are respectively connected with the tops of the corresponding first support rods (21) in a rotating mode, the hinge seat (8) is arranged in parallel with the positioning seat (51), and the two first support rods (21) are connected through a first connecting rod (22).

9. A collapsible support stand according to any one of claims 1-6, 8 wherein: the second support (3) comprises two second support rods (31) which are oppositely arranged, each second support rod (31) is provided with a slideway (3 a), at least one second support rod (31) is provided with a locking structure (4), and the two second support rods (31) are connected through a second connecting rod (32).

10. A collapsible support stand according to any one of claims 1-6, 8 wherein: the bottom of at least one of the first bracket (2) and the second bracket (3) is provided with wheels (9).