CN212691692U

CN212691692U - Folding expansion bracket

Info

Publication number: CN212691692U
Application number: CN202021808318.XU
Authority: CN
Inventors: 周晓峰
Original assignee: Foshan Shijing Tourism Products Co ltd
Current assignee: Foshan Shijing Tourism Products Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-03-12
Anticipated expiration: 2030-08-26

Abstract

The utility model provides a folding expansion bracket, which comprises a main rod, a supporting foot rod, a connecting rod and a folding slider; the supporting foot rods and the connecting rods are arranged at the lower end of the main rod; the folding sliding block is sleeved outside the main rod in a sliding manner; the folding sliding block is provided with the first self-locking piece; when the main rod slides upwards relative to the folding sliding block, the first self-locking piece locks and fixes the folding sliding block and the main rod; the utility model discloses the volume is less, can accomplish fast and expand and fold condition switch and have self-locking function, and promote the stability of expansion state under bracing structure.

Description

Folding expansion bracket

Technical Field

The utility model relates to a technical field of folding expansion bracket, especially a folding expansion bracket.

Background

At present, in various large-scale construction operation places such as railways, electric power, public security and the like or places where people go out for picnic, in order to adapt to illumination, equipment maintenance, fire control and relief work and the like, a liftable tripod is required to be used for hanging lamp illumination, the tripod has the defects of use at present, a stand column structure is often adopted, the structure is single, the length is overlong, the size is large, the carrying and carrying are inconvenient, and particularly, the support leg frame cannot be folded and contracted, and the carrying is inconvenient.

With the development of the technology, the support leg frames which can be stacked in the prior art appear, but the support leg frames are complex in folding operation or poor in support stability of an unfolding structure, so that the support leg frames are complex in operation when being switched between the unfolding state and the folding state, and the actual using effect is directly influenced.

SUMMERY OF THE UTILITY MODEL

To the above defect, the utility model aims to provide a folding expansion bracket, the volume is less, can accomplish fast and expand and fold condition switch and have self-locking function, and promote the stability of expansion state under bracing structure.

To achieve the purpose, the utility model adopts the following technical proposal:

a folding expansion bracket comprises a main rod, supporting foot rods, a connecting rod and a folding sliding block; the supporting foot rods and the connecting rods are arranged at the lower end of the main rod; the folding sliding block is sleeved outside the main rod in a sliding manner; the folding sliding block is provided with the first self-locking piece; when the main rod slides upwards relative to the folding sliding block, the folding sliding block and the main rod are locked and fixed by the first self-locking piece.

Preferably, the first self-locking member includes a connecting portion, a rotation shaft, a self-locking plate, and a contraction spring; the self-locking plate is provided with a self-locking hole; the main rod is arranged in the self-locking hole; the connecting part is connected with the folding sliding block; the self-locking plate is hinged with the connecting part through the rotating shaft; the retraction spring is sleeved on the rotating shaft, and under the elastic force action of the retraction spring, the self-locking plate rotates around the axis of the rotating shaft and tends to be close to the folding sliding block.

Preferably, three connecting rods are arranged at equal intervals along the circumferential direction of the folding sliding block, and one end of each connecting rod is hinged with the folding sliding block; the bottom end of the main rod is provided with three support foot rods corresponding to the direction of the connecting rod, and the support foot rods are hinged with the main rod; the other end of the connecting rod is hinged to the middle part of the supporting foot rod;

preferably, the telescopic device also comprises a plurality of groups of telescopic rod groups, wherein the telescopic rod groups are sequentially overlapped and arranged at the top end of the main rod; the telescopic rod group comprises an extension rod and a second self-locking piece; the main rod is provided with an extended through hole penetrating through the upper end and the lower end of the main rod; the extension rod is slidably arranged in the extension through hole; the second self-locking piece is arranged at the top end of the main rod.

Preferably, the top end of the telescopic rod group is provided with a hook component; the hook component comprises a sleeve head, a hanging shaft and a hook; the upper end of the sleeve head is provided with a hanging groove; the hanging shaft is vertically arranged in the hanging groove; the hook is hinged with the sleeve head through the hanging shaft.

Preferably, a hook cavity is arranged inside the sleeve head and communicated with the hanging groove.

Preferably, the hook comprises an extension section, a disassembly and assembly section and a hook section; the disassembly and assembly section and the hook section are respectively arranged on two sides of one end of the extension section; and a dismounting opening is arranged between the dismounting section and the extension section.

Preferably, one end of the supporting foot rod is provided with a stabilizing foot piece, and the stabilizing foot piece is hinged to the supporting foot rod.

Preferably, the stabilizing foot member includes a hinge plate and a support plate; the hinged plates are arranged at two ends of the supporting foot rods and are hinged with the supporting foot rods; the supporting plate is arranged between the hinged plates and is perpendicular to the hinged plates

The utility model has the advantages that:

the utility model provides a folding expansion bracket, through control folding slider is in to the slip on the mobile jib, thereby it is right strutting and folding the control of supporting legs pole, be equipped with on the folding slider first from the latch fitting works as can be right after the supporting legs pole struts folding slider carries out the auto-lock, makes strutting the angle of strutting of supporting legs pole is fixed, lifts from the latch fitting just can be right first from the latch fitting unblock, easy operation, folding expansion bracket strut and folding operation all simple and convenient easy operation.

Drawings

Fig. 1 is an overall perspective view of an embodiment of the present invention;

fig. 2 is a schematic view of another usage state of an embodiment of the present invention;

fig. 3 is a detailed view of a first self-locking member according to an embodiment of the present invention;

fig. 4 is a detailed schematic view of a hooking component according to an embodiment of the invention;

fig. 5 is a detailed schematic view of a stabilization foot according to an embodiment of the present invention.

Wherein: the main rod 1, the supporting foot rod 2, the connecting rod 3, the folding slider 4, the first self-locking piece 5, the connecting part 51, the rotating shaft 52, the self-locking plate 53, the contraction spring 54, the self-locking hole 55, the telescopic rod group 6, the extension rod 61, the second self-locking piece 62, the hook component 7, the sleeve head 71, the hanging groove 711, the hanging shaft 72, the hook 73, the extension section 731, the dismounting section 732, the hook section 733, the dismounting opening 734, the stabilizing foot piece 8, the hinge plate 81 and the supporting plate 82.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1-5, a folding telescopic frame comprises a main rod 1, a supporting foot rod 2, a connecting rod 3 and a folding slider 4; the supporting foot rods 2 and the connecting rods 3 are arranged at the lower end of the main rod 1; the folding slide block 4 is sleeved outside the main rod 1 in a sliding manner; the folding sliding block 4 is provided with the first self-locking piece 5; when the main rod 1 slides upwards relative to the folding slider 4, the first self-locking piece 5 locks and fixes the folding slider 4 and the main rod 1.

Specifically, the self-locking mechanism may have a plurality of self-locking principles, for example, a self-locking structure with opposite-side cross stress may be adopted, that is, two opposite sides of the first self-locking member 5 are closely attached to two sides corresponding to the main rod, and directions of two sides of the main rod 1, which are subjected to the forces of the two sides corresponding to the first self-locking member 5, are crossed, at this time, if the main rod 1 is further moved downward by an external force, a directional movement tendency of the first self-locking member 5 is given, forces applied to two sides of the main rod 1 by the first self-locking member 5 are crossed upward, and become larger as the external force applied to the main rod 1 downward increases, so that a self-locking phenomenon is formed between the main rod 1 and the first self-locking member 5; when a self-locking structure with opposite-side cross stress is adopted, the specific structure which can be implemented by the person skilled in the art is also various, such as:

the first self-locking piece 5 includes a connecting portion 51, a rotating shaft 52, a self-locking plate 53 and a contraction spring 54; the self-locking plate 53 is provided with a self-locking hole 55; the main rod 1 is arranged in the self-locking hole 55; the connecting part 51 is connected with the folding slider 4; the self-locking plate 53 is hinged with the connecting part 51 through the rotating shaft 52; the retraction spring 54 is sleeved on the rotation shaft 52, and under the elastic force of the retraction spring 54, the self-locking plate 53 rotates around the axis of the rotation shaft 52, and tends to approach the folding slider 4.

Specifically, under the elastic force of the retraction spring 54, the self-locking plate 53 rotates around the axis of the rotation shaft 52, so that the hole walls on the two sides of the self-locking hole 55 are in contact with the outer surface of the main rod 1, the hole walls on the two sides of the self-locking hole 55 generate relative cross pressure on the main rod 1, when the main rod 1 is further pressed downwards, the cross pressure generated by the hole walls of the self-locking hole 55 on the outer surface of the main rod 1 is increased, the locking fixing force of the self-locking plate 53 and the main rod 1 is increased, and thus the folding slider 4 is locked, the support leg rods 2 and the connecting rod 3 do not rotate, and the purpose of locking the opening angle of the support leg rods 2 is achieved; when the folding sliding block 4 descends along the main rod 1, the first self-locking piece 5 is in a released state and does not need to be unlocked manually; after the supporting foot rods 2 are unfolded, the folding sliding block 4 has a tendency of relatively rising along the main rod 1 due to the action of gravity and the downward pressing action of the main rod 1, and at the moment, the self-locking plate 53 can be self-locked, and the rising movement of the folding sliding block 4 is prevented by the cross force of the self-locking plate 53; when the opening angle of the support leg rod 2 needs to be adjusted or contracted, the self-locking plate 53 is only required to be lifted, so that the inner wall of the self-locking hole 55 is not in contact with the main rod 1, the folding slider 4 and the main rod 1 can perform relative sliding motion, and the support leg rod 2 is controlled by controlling the lifting of the folding slider 4; prop open supporting legs pole 2 directly promote folding slider 4 can, supporting legs pole 2 props up the back first from 5 auto-locks of locking part is right supporting legs pole 2 is fixed, lifts from jam plate 53 just can be right first from 5 unblocks of locking part, easy operation and convenience.

Further, the folding slider 4 is slidably disposed on the main rod 1; the folding sliding blocks 4 are provided with three connecting rods 3 arranged at equal intervals along the circumferential direction, and one end of each connecting rod 3 is hinged with the folding sliding block 4; the bottom end of the main rod 1 is provided with three support foot rods 2 corresponding to the direction of the connecting rod 3, and the support foot rods 2 are hinged with the main rod 1; the other end of the connecting rod 3 is hinged to the middle part of the supporting foot rod 2;

specifically, the folding slider 4 can slide on the main rod 1 along the length direction of the main rod 1, i.e. the vertical direction in the figure; the three connecting rods 3 are arranged at the bottom end of the folding slider 4 at equal intervals along the horizontal plane in the circumferential direction with the center of the folding slider 4 as the center, when the supporting leg rods 2 need to be unfolded or folded, the folding slider 4 can slide relative to the main rod 1 only by loosening the first self-locking part 5, then the folding slider 4 is pushed, the folding slider 4 can drive the three connecting rods 3 below to rotate around the hinged points of the connecting rods 3 and the folding slider 4, and then the rotating motion of the connecting rods 3 can drive the supporting leg rods 2 to rotate around the hinged points of the connecting rods 3 and the main rod 1, so that the unfolding or folding motion of the supporting leg rods 2 is controlled;

specifically, when the supporting leg rods 2 need to be unfolded, the folding slider 4 is pushed to descend along the main rod 1, the supporting leg rods 2 are gradually far away from the main rod 1 from the position close to the main rod 1 and rotate by more than 90 degrees around the hinge point of the supporting leg rods 2 and the main rod 1, so that the supporting leg rods 2 face downwards to support the ground, and after the inclination angles of the supporting leg rods 2 are adjusted, the first self-locking pieces 5 are locked, so that the inclination angles of the supporting leg rods 2 can be fixed; when the supporting leg rod 2 needs to be retracted, the first self-locking piece 5 is released and the folding slide block 4 is pushed to ascend, and the supporting leg frame rotates around the hinge point between the supporting leg frame and the main rod 1 until the supporting leg rod 2 is gradually close to the main rod 1, so that the supporting leg rod 2 is retracted; the telescopic rack is simple and convenient to operate, the length of the supporting foot rods 2 can be completely contracted to the main rod 1, and the storage space of the telescopic rack is favorably reduced.

Further, in this embodiment, the foldable telescopic frame further includes a plurality of telescopic rod groups 6, and the telescopic rod groups 6 are sequentially stacked on the top end of the main rod 1; the telescopic rod group 6 comprises an extension rod 61 and a second self-locking piece 62; the main rod 1 is provided with an extended through hole penetrating through the upper end and the lower end of the main rod 1; the extension rod 61 is slidably arranged in the extension through hole; the second self-locking member 62 is disposed at the top end of the main lever 1.

Specifically, the size of the extension rods 61 of the plurality of groups of telescopic rod groups 6 which are installed in an overlapped manner is gradually decreased, the extension rods 61 are all of a structure which penetrates through the extension rods up and down, the larger extension rod 61 is sleeved outside the smaller extension rod 61, the smaller extension rod 61 slides inside the larger extension rod 61, the extension rods 61 of the plurality of groups of telescopic rod groups 6 are installed in an overlapped manner in sequence, and the sliding motion of the smaller extension rod 61 is limited by the second self-locking piece 62 installed on the larger extension rod 61, so that the extension and retraction of the extension rods 61 are controlled, and the extension and retraction height of the telescopic rod groups 6 are controlled; the extension rod 61 of the telescopic rod group 6 connected to the main rod 1 is slidably disposed in the extension through hole, and is locked by a second self-locking member 62 installed on the main rod 1.

Further, a hook component 7 is arranged at the top end of the telescopic rod group 6; the hooking component 7 comprises a sleeve head 71, a hooking shaft 72 and a hook 73; the upper end of the sleeve head 71 is provided with a hanging groove 711; the hanging shaft 72 is vertically arranged in the hanging groove 711; the hook 73 is hinged with the sleeve head 71 through the hanging shaft 72.

Specifically, in this embodiment, when an object needs to be hooked on the foldable telescopic frame, the hook 73 is hinged to the hanging shaft 72, and the side edge of the hook 73 is pressed on the hanging groove 711, and under the support of the hanging shaft 72 and the hanging groove 711 as a fulcrum and the limiting effect of the two sides of the hanging groove 711, the hook 73 is horizontally fixed, so that the object needing to be hooked can be hung on the hook 73, and the foldable telescopic frame is convenient to use.

Further, a hook cavity is arranged inside the sleeve head 71, and the hook cavity is communicated with the hanging groove 711.

Specifically, in this embodiment, when the hook 73 is not needed, the hook 73 can be rotated around the hanging shaft 72, and then the hook is inserted into the hook cavity, and the other end of the hook 73 is hooked through the hanging shaft 72, so that the hook 73 can be stored, the storage of the hook 73 when the hook is not used is facilitated, and the hook 73 is prevented from being outside for a long time and causing damage to the hook itself or causing safety hazards to outside objects or people.

Further, the hook 73 includes an extension section 731, a disassembly section 732, and a hook section 733; the disassembling section 732 and the hook 73 are respectively arranged at two sides of one end of the extending section 731; a disassembly and assembly port 734 is arranged between the disassembly and assembly section 732 and the extension section 731.

Specifically, when the hook 73 is used, the hanging shaft 72 supports one end of the elongated section 731, and the hanging groove 711 is matched to complete positioning of the hook, so that the hook 73 is located at the other end for hooking the passing object; when the hook 73 is not needed, the extension section 731 is inserted into the hook cavity, the hanging shaft 72 supports and positions the other end of the extension section 731 of the threo fox, the hook is stored, when the hook 73 needs to be taken out, the hanging shaft 72 is placed in the dismounting section 732, the hook is pulled outwards, the hanging shaft 72 passes through the dismounting opening 734, and then the hook can be taken out.

Further, one end of the supporting foot rod 2 is provided with a stabilizing foot piece 8, and the stabilizing foot piece 8 is hinged to the supporting foot rod 2.

Specifically, work as after support foot pole 2 struts, be located support foot pole 2 one end stabilize foot spare 8 and support ground, increase and the area of contact on ground, increase friction, thereby make support foot pole 2 is more stable with the contact on ground, prevents support foot pole 2 and ground produce the slip.

Further, the stabilizing foot member 8 includes a hinge plate 81 and a support plate 82; the hinged plates 81 are arranged at two ends of the support leg rod 2, and the hinged plates 81 are hinged with the support leg rod 2; the support plate 82 is disposed between the hinge plates 81, and the support plate 82 is disposed perpendicular to the hinge plates 81.

Specifically, the hinged plate 81 with the support foot rod 2 is connected for articulated, consequently stabilize the foot piece 8 and can be according to the support foot rod 2 is different angles with ground and adjusts, makes the backup pad 82 is parallel with ground all the time, keeps the area of contact of biggest, increase and ground area of contact, guarantees the stability of support foot rod 2.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims

1. A folding expansion bracket comprises a main rod, supporting foot rods, a connecting rod and a folding sliding block; the supporting foot rods and the connecting rods are arranged at the lower end of the main rod; the folding sliding block is sleeved outside the main rod in a sliding manner; the method is characterized in that: the folding sliding block is provided with a first self-locking piece; when the main rod slides upwards relative to the folding sliding block, the folding sliding block and the main rod are locked and fixed by the first self-locking piece.

2. A folding telescopic frame, according to claim 1, characterized in that: the first self-locking piece comprises a connecting part, a rotating shaft, a self-locking plate and a contraction spring; the self-locking plate is provided with a self-locking hole; the main rod is arranged in the self-locking hole; the connecting part is connected with the folding sliding block; the self-locking plate is hinged with the connecting part through the rotating shaft; the retraction spring is sleeved on the rotating shaft, and under the elastic force action of the retraction spring, the self-locking plate rotates around the axis of the rotating shaft and tends to be close to the folding sliding block.

3. A folding telescopic frame, according to claim 1, characterized in that: the folding sliding blocks are provided with three connecting rods at equal intervals along the circumferential direction, and one ends of the connecting rods are hinged with the folding sliding blocks; the bottom end of the main rod is provided with three support foot rods corresponding to the direction of the connecting rod, and the support foot rods are hinged with the main rod; the other end of the connecting rod is hinged to the middle part of the supporting foot rod.

4. A folding telescopic frame, according to claim 1, characterized in that: the telescopic rod group is sequentially arranged on the top end of the main rod in an overlapping mode; the telescopic rod group comprises an extension rod and a second self-locking piece; the main rod is provided with an extended through hole penetrating through the upper end and the lower end of the main rod; the extension rod is slidably arranged in the extension through hole; the second self-locking piece is arranged at the top end of the main rod.

5. A folding telescopic frame according to claim 4, characterized in that: the top end of the telescopic rod group is provided with a hook component; the hook component comprises a sleeve head, a hanging shaft and a hook; the upper end of the sleeve head is provided with a hanging groove; the hanging shaft is vertically arranged in the hanging groove; the hook is hinged with the sleeve head through the hanging shaft.

6. A folding telescopic frame, according to claim 5, characterized in that: the inside of pullover is equipped with the couple cavity, the couple cavity with hang and lean on the groove intercommunication.

7. The folding expansion bracket of claim 6, wherein: the hook comprises an extension section, a disassembly and assembly section and a hook section; the disassembly and assembly section and the hook section are respectively arranged on two sides of one end of the extension section; and a dismounting opening is arranged between the dismounting section and the extension section.

8. A folding telescopic frame, according to claim 1, characterized in that: one end of the supporting foot rod is provided with a stabilizing foot piece, and the stabilizing foot piece is hinged with the supporting foot rod.

9. The folding expansion bracket of claim 8, wherein: the stabilizing foot piece comprises a hinged plate and a supporting plate; the hinged plates are arranged at two ends of the supporting foot rods and are hinged with the supporting foot rods; the supporting plate is arranged between the hinged plates and is perpendicular to the hinged plates.