CN220669051U - Multistage electric telescopic support - Google Patents

Abstract

The utility model discloses a multistage electric telescopic bracket, which comprises: the base is provided with a fixed pipe, at least two sections of movable pipes are sequentially arranged on the fixed pipe in a telescopic manner, the end parts of the movable pipes positioned at the tail ends are used for being connected with external equipment, a first screw rod mechanism is arranged between the fixed pipe and the adjacent movable pipes, a second screw rod mechanism is arranged between the fixed pipe and the other movable pipes, and an electric device for driving the first screw rod mechanism and the second screw rod mechanism to synchronously move so that all the movable pipes can move in a telescopic manner relative to the fixed pipes is arranged in the base or the fixed pipe. When the height position of the external equipment needs to be lifted, all the movable pipes extend out of the fixed pipes, and the movable pipes are mutually far away; when the height position of the external equipment needs to be reduced, all the movable pipes retract in the fixed pipes, and the movable pipes are also mutually close to each other, so that the effects of large expansion range, high adjustment efficiency, labor saving and the like are achieved, and the intelligent household requirements are met.

Description

Multistage electric telescopic support

Technical Field

The utility model relates to a multistage electric telescopic bracket.

Background

In the related art, in order to mount an image device such as a projector or a camera on a table, a stand is generally required to be provided to connect the image device, and in order to achieve height adjustment of the image device, the stand is generally equipped with a telescopic tube capable of adjusting a length. Some current flexible pipes are equipped with many sections of body in order to reach the flexible regulation of great scope, through the relative position between the locking body again after adjusting the distance between the adjacent body, the support of this kind of structure adjusts inconveniently, and to heavier image equipment, manual regulation is very difficult moreover, also does not satisfy intelligent house's demand.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the multistage electric telescopic support which is high in adjusting efficiency, labor-saving, large in telescopic range and capable of meeting the requirements of intelligent households.

According to an embodiment of the utility model, a multistage electric telescopic bracket comprises: the base, be equipped with the fixed pipe on the base, flexible being provided with at least two sections movable tube in proper order on the fixed pipe, be located the end the tip of movable tube is used for connecting external equipment, fixed pipe and adjacent be equipped with first screw mechanism between the movable tube, fixed pipe and the rest be equipped with the second screw mechanism between the movable tube, the base perhaps be equipped with in the fixed pipe the drive first screw mechanism with second screw mechanism synchronous motion makes all the movable tube is relative fixed the electric device of the flexible removal of pipe.

The multistage electric telescopic bracket provided by the embodiment of the utility model has at least the following beneficial effects:

when the multistage electric telescopic support with the structure needs to lift the height position of external equipment, the electric device drives the first screw rod mechanism and the second screw rod mechanism to synchronously move so as to drive all movable pipes to extend out of the fixed pipes, and the movable pipes are far away from each other; when the height position of external equipment needs to be reduced, the first screw rod mechanism and the second screw rod mechanism are driven to synchronously move through the electric device so as to drive all the movable pipes to retract in the fixed pipes, and the movable pipes are also mutually close to each other, so that the effects of large expansion range, high adjustment efficiency, labor saving and the like are achieved, and the intelligent household requirements are favorably met.

In some embodiments of the present utility model, a fixed seat is disposed at a lower end of the fixed tube, a connecting seat is disposed at a lower end of the movable tube, the connecting seat is slidably disposed in the fixed tube or another movable tube, the first screw mechanism includes a first screw rod rotatably disposed in the fixed seat, a first threaded hole matched with the first screw rod is disposed adjacent to the connecting seat of the fixed seat, the second screw mechanism includes a second screw rod rotatably disposed in the fixed seat, a second threaded hole matched with the second screw rod is disposed corresponding to the connecting seat, and the first screw rod and the second screw rod are both disposed inside the fixed tube and the movable tube.

In some embodiments of the present utility model, the second screw includes a transmission rod and a threaded post, one end of the threaded post is rotatably disposed on one of the two adjacent connection seats, the threaded post is in threaded connection with the other of the two adjacent connection seats, the lower end of the transmission rod is rotatably disposed on the fixing seat, a transmission groove extending along a length direction of the transmission rod and into which the transmission rod is movably inserted is provided in the threaded post, and when the movable pipe is retracted relative to the fixed pipe, the transmission rod can extend into along the transmission groove to shorten a length dimension of the second screw.

In some embodiments of the present utility model, the electric device includes a motor disposed on the fixing base, and an output shaft of the motor is in transmission connection with the first screw, and an output shaft of the motor is in transmission connection with the second screw through a gear set.

In some embodiments of the present utility model, the output shaft of the motor is provided with a driving gear, the lower end of the first screw is provided with a first pivot member penetrating the fixing seat and capable of rotating relative to the fixing seat, and the first pivot member is provided with a first driven gear meshed with the driving gear.

In some embodiments of the present utility model, a second pivot member penetrating the fixing seat and capable of rotating relative to the fixing seat is disposed at a lower end of the second screw, a second driven gear meshed with the driving gear is disposed on the second pivot member, specifications of the second driven gear and the first driven gear are the same, and screw structures of the first screw and the second screw are consistent.

In some embodiments of the utility model, the cross-sectional shape of the drive rod and the drive slot are each "D" shaped.

In some embodiments of the present utility model, a limiting member capable of abutting against the corresponding connection seat is fixedly disposed at the upper parts of the first screw and the second screw.

In some embodiments of the present utility model, the base includes a bottom plate and an arc plate arranged above the bottom plate in a cambered way, a positioning perforation is formed on the arc plate for the lower end of the fixing tube to pass through, a containing cavity is defined between the arc plate and the bottom plate, and the electric device is located in the containing cavity.

In some embodiments of the present utility model, a bearing plate is disposed on an end surface of the movable tube at the end, a mounting perforation opposite to the internal channel of the movable tube is disposed in the middle of the bearing plate, an anti-drop plug is disposed through the mounting perforation to connect the movable tube, and a connecting hole is disposed in the middle of the anti-drop plug.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a structure of a movable tube of an embodiment of a multi-stage electrically-retractable stand of the present utility model extended relative to a stationary tube;

FIG. 2 is a schematic view of the embodiment of FIG. 1 with the movable tube retracted relative to the stationary tube;

FIG. 3 is a schematic cross-sectional view of the embodiment of FIG. 1;

FIG. 4 is a schematic cross-sectional view of the embodiment of FIG. 2;

FIG. 5 is a schematic view showing the combination of a stationary tube and a movable tube;

fig. 6 is a schematic view showing the combination of the fixed tube, the movable tube, the fixed base and the connecting base.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 4, a multistage electric telescopic bracket according to an embodiment of the present utility model includes: the base 100 is provided with a fixed pipe 200, the fixed pipe 200 is sequentially provided with at least two sections of movable pipes 300 in a telescopic manner, the end parts of the movable pipes 300 positioned at the tail ends are used for connecting external equipment, a first screw mechanism 400 is arranged between the fixed pipe 200 and the adjacent movable pipes 300, a second screw mechanism 500 is arranged between the fixed pipe 200 and the rest movable pipes 300, and an electric device 600 for driving the first screw mechanism 400 and the second screw mechanism 500 to synchronously move so that all the movable pipes 300 can move in a telescopic manner relative to the fixed pipe 200 is arranged in the base 100 or the fixed pipe 200.

When the multi-stage electric telescopic support with the structure needs to lift the height position of external equipment, the electric device 600 drives the first screw rod mechanism 400 and the second screw rod mechanism 500 to synchronously move so as to drive all the movable pipes 300 to extend out of the fixed pipe 200, and the movable pipes 300 are also far away from each other; when the height position of the external equipment needs to be reduced, the electric device 600 drives the first screw rod mechanism 400 and the second screw rod mechanism 500 to synchronously move so as to drive all the movable pipes 300 to retract in the fixed pipe 200, and the movable pipes 300 are also mutually close to each other, so that the effects of large expansion range, high adjustment efficiency, labor saving and the like are achieved, and the intelligent household requirements are favorably met. The electric device 600 is capable of driving the first screw mechanism 400 and the second screw mechanism 500 with high adjustment accuracy, and is capable of being fixed after the height position of the external device is adjusted to an arbitrary position, and has a high degree of freedom.

Referring to fig. 3, 4 and 5, in some embodiments of the present utility model, a fixed seat 210 is provided at a lower end of a fixed tube 200, a connecting seat 310 is provided at a lower end of a movable tube 300, the connecting seat 310 is slidably disposed in the fixed tube 200 or another movable tube 300, a first screw mechanism 400 includes a first screw rod rotatably disposed in the fixed seat 210, a first screw hole matched with the first screw rod is provided adjacent to the connecting seat 310 of the fixed seat 210, a second screw mechanism 500 includes a second screw rod rotatably disposed in the fixed seat 210, a second screw hole matched with the second screw rod is provided in the corresponding connecting seat 310, and the first screw rod and the second screw rod are both disposed in the fixed tube 200 and the movable tube 300. The above structural layout prevents the first screw and the second screw from being exposed, when the bracket is extended, the connecting seat 310 close to the fixing seat 210 moves away from the fixing seat 210, meanwhile, the two adjacent connecting seats 310 also move away from each other, when the bracket is shortened, the connecting seats 310 close to the fixing seat 210 move close to the fixing seat 210, and meanwhile, the two adjacent connecting seats 310 also move close to each other. The support realizes large-scale telescopic adjustment with a simple structure, and is convenient to produce and assemble.

It should be noted that, referring to fig. 6, the telescopic guiding structure 10 is disposed between the fixed tube 200 and the adjacent movable tube 300 and between two adjacent movable tubes 300, and the telescopic guiding structure 10 is used for limiting the relative telescopic movement between the fixed tube 200 and the adjacent movable tube 300 and between two adjacent movable tubes 300, but not the relative rotation. Specifically, the telescopic guide structure 10 includes a telescopic guide groove 11 provided on the inner circumferential wall of the fixed tube 200 or the inner circumferential wall of the movable tube 300, and a guide protrusion 12 provided on the outer circumferential wall of the connection base 310 and engaged with the corresponding telescopic guide groove 11.

It should be noted that, in general, since the second screw is connected to the movable tube 300, the length of the second screw is long, and when the bracket is shortened, the second screw may protrude out of the movable tube 300 and interfere with external devices. Therefore, in some embodiments of the present utility model, referring to fig. 3 and 4, the second screw includes a driving rod 510 and a screw column 520, one end of the screw column 520 is rotatably provided on one of the connection seats 310, the screw column 520 is screwed to the adjacent other connection seat 310 to enable the other end of the screw column 520 to move up and down relative to the corresponding connection seat 310, specifically, in this embodiment, a first nut 330 is fixedly connected to the lower end of the screw column 520, the first nut 330 is movably provided in the lower connection seat 310, the screw column 520 and the first nut 330 as a whole can rotate only relative to the connection seat 310, a second nut 320 screwed to the screw column 520 is fixedly provided in the upper connection seat 310, the lower end of the driving rod 510 is rotatably provided on the fixing seat 210, a driving groove 521 extending along the length direction of the driving rod 510 is provided in the inside of the screw column 520, and the driving rod 510 can be extended along the driving groove 521 to shorten the length of the second screw when the movable tube 300 is retracted relative to the fixed tube 200. Of course, in other embodiments, the first nut 330 may be disposed and fixed in the lower connecting seat 310, the first nut 330 is in threaded connection with the threaded column 520, the second nut 320 is disposed and fixed at the upper end of the threaded column 520, and the second nut 320 and the threaded column 520 as a whole can only rotate relative to the upper connecting seat 310, so as to achieve telescopic adjustment of the second screw.

Referring to the embodiment of fig. 1 to 4, the movable tube 300 has two sections, when the height position of the external device needs to be lowered, the electric device 600 drives the first screw and the driving rod 510 to rotate synchronously, the first screw rotates to drive the connecting seat 310 close to the fixing seat 210 to descend, that is, the movable tube 300 close to the fixing seat 200 retracts relative to the fixing tube 200, the driving rod 510 drives the threaded column 520 to rotate together, the uppermost connecting seat 310 descends, the upper movable tube 300 retracts relative to the lower movable tube 300, and at the same time, the threaded column 520 descends relative to the driving rod 510 by a certain distance due to the descending of the connecting seat 310 close to the fixing seat 210, and the depth dimension of the driving rod 510 inserted into the driving groove 521 is increased, so that the length dimension of the second screw is shortened, and interference with other parts is avoided. Similarly, when the height of the external device needs to be lifted, the electric device 600 drives the first screw and the driving rod 510 to rotate synchronously, and when the first screw rotates, the connecting seat 310 close to the fixing seat 210 is driven to rise, that is, the movable tube 300 close to the fixing tube 200 extends out relative to the fixing tube 200, the driving rod 510 drives the threaded column 520 to rotate together, the connecting seat 310 at the uppermost position rises, the movable tube 300 at the upper position extends out relative to the movable tube 300 at the lower position, and at the same time, as the connecting seat 310 close to the fixing seat 210 rises, the threaded column 520 rises a certain distance relative to the driving rod 510, so that the depth dimension of the driving rod 510 inserted into the driving groove 521 is reduced, and the length dimension of the second screw is prolonged.

In addition, it should be noted that, when the movable tube 300 is provided with three sections, the second screw rod between the movable tube 300 and the fixed tube 200 at the end should be provided with two sections of transmission rods 510 and one section of threaded column 520, and the two sections of transmission rods 510 and the threaded column 520 can be moved in a telescopic manner, after the movable tube 300 is retracted relative to the fixed tube 200, the length of the second screw rod can be shortened to be housed in the whole formed by the fixed tube 200 and the movable tube 300, so as to avoid interference with external devices.

Referring to fig. 3 and 4, in some embodiments of the present utility model, the electric device 600 includes a motor 610 disposed on the fixing base 210, and an output shaft of the motor 610 is in transmission connection with the first screw, and an output shaft of the motor 610 is in transmission connection with the second screw through a gear set. The electric device 600 is simple and compact in structure and high in transmission accuracy. In other embodiments, the electric device 600 may also be replaced with a synchronous pulley mechanism.

Referring to fig. 4, in some embodiments of the present utility model, the output shaft of the motor 610 is provided with a driving gear 620, the lower end of the first screw is provided with a first pivot member 410 penetrating the fixing base 210 and rotatable relative to the fixing base 210, and the first pivot member 410 is provided with a first driven gear 630 engaged with the driving gear 620. The central axis of the first pivot member 410 is collinear with the central axis of the first screw, the first pivot member 410 is fixed to the lower end of the first screw in a threaded connection manner, and it is convenient to combine the first driven gear 630 with the first screw by using the first pivot member 410.

Referring to fig. 4 and 5, in some embodiments of the present utility model, a second pivot member 501 penetrating the fixing base 210 and capable of rotating relative to the fixing base 210 is disposed at a lower end of the second screw, a second driven gear 640 engaged with the driving gear 620 is disposed on the second pivot member 501, the second driven gear 640 and the first driven gear 630 have the same specification, and the screw structures of the first screw and the second screw are identical. It will be appreciated that when the motor 610 rotates a certain angle, the first screw and the second screw rotate by the same angle in the same rotation direction, so that the telescopic distance between the adjacent movable pipes 300 is consistent with the telescopic distance between the movable pipes 300 and the fixed pipe 200, and the movable pipes 300 of each section synchronously move by the same distance, which is beneficial to quickly adjusting the height dimension of the bracket.

In some embodiments of the present utility model, the cross-sectional shape of the drive rod 510 and the drive slot 521 are each "D" shaped (not shown). The transmission rod 510 and the transmission groove 521 having the cross-sectional shapes can drive the transmission rod 510 and the screw column 520 to rotate together, and facilitate forming external screw threads on the outer circumferential wall of the transmission rod 510 so as to facilitate connection of the transmission rod 510 and the electric device 600. In this embodiment, the lower end of the transmission rod 510 is provided with an external thread, and the lower end of the transmission rod 510 is connected to the second pivot member 501 through a threaded sleeve.

Referring to fig. 3 and 5, in some embodiments of the present utility model, in order to prevent the movable tube 300 from being thoroughly separated from the fixed tube 200, and ensure the normal telescopic adjustment of the multi-stage electric telescopic bracket of the present utility model, the upper parts of the first screw and the second screw are fixedly provided with a limiting member 700 capable of abutting against the corresponding connection seat 310.

Referring to fig. 1 and 2, in some embodiments of the present utility model, the base 100 includes a base plate 110 and an arc plate 120 arranged above the base plate 110 in a cambered manner, wherein a positioning hole is formed in the arc plate 120 for the lower end of the fixing tube 200 to pass through, a receiving cavity is defined between the arc plate 120 and the base plate 110, and the electric device 600 is located in the receiving cavity. The base 100 having the above structure has a light weight, and can protect the electric device 600 from being exposed, and the base plate 110 is suitable for being placed on a table surface.

Referring to fig. 3, in some embodiments of the present utility model, a loading plate 800 is provided on an end surface of the movable tube 300 at the end, a mounting through hole opposite to an inner channel of the movable tube 300 is provided at a middle portion of the loading plate 800, the anti-drop plug 900 is inserted through the mounting through hole to connect the movable tube 300, and a connection hole 910 is provided at a middle portion of the anti-drop plug 900. The above structure facilitates assembly of the carrier plate 800 without adding more fasteners, and in addition, the external device is generally configured with a plug-in post or a mounting bolt adapted to the connection hole 910, and the carrier plate 800 is used for supporting the bottom of the external device.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A multi-stage electrically-telescoping stent, comprising:

base (100), be equipped with fixed pipe (200) on base (100), flexible being provided with at least two sections movable tube (300) on fixed pipe (200) in proper order, be located the end the tip of movable tube (300) is used for connecting external equipment, fixed pipe (200) with be equipped with first screw mechanism (400) between adjacent movable tube (300), fixed pipe (200) with the rest be equipped with second screw mechanism (500) between movable tube (300), base (100) or be equipped with the drive in fixed pipe (200) first screw mechanism (400) with second screw mechanism (500) synchronous motion is in order to make all movable tube (300) are relative fixed pipe (200) concertina movement's electric device (600).

2. A multi-stage motorized telescopic bracket according to claim 1, wherein:

the lower extreme of fixed pipe (200) is equipped with fixing base (210), the lower extreme of movable pipe (300) is equipped with connecting seat (310), connecting seat (310) slidable are located fixed pipe (200) or another in movable pipe (300), first screw mechanism (400) are including rotating to be located first screw rod of fixing base (210), adjacent connecting seat (310) of fixing base (210) be equipped with first screw rod matched with first screw hole, second screw mechanism (500) are including rotating to be located the second screw rod of fixing base (210), corresponding connecting seat (310) be equipped with second screw rod matched with second screw hole, first screw rod second screw rod all is located fixed pipe (200) with the inside of movable pipe (300).

3. A multi-stage motorized telescopic support according to claim 2, wherein:

the second screw rod comprises a transmission rod (510) and a threaded column (520), one end of the threaded column (520) is only rotationally arranged on one of the two adjacent connecting seats (310), the threaded column (520) is in threaded connection with the other of the two adjacent connecting seats (310), the lower end of the transmission rod (510) is rotationally arranged on the fixed seat (210), a transmission groove (521) which extends along the length direction of the transmission rod and is used for the transmission rod (510) to be movably inserted is formed in the threaded column (520), and when the movable pipe (300) is retracted relative to the fixed pipe (200), the transmission rod (510) can extend into the transmission groove (521) to shorten the length of the second screw rod.

4. A multi-stage motorized telescopic support according to claim 2, wherein:

the electric device (600) comprises a motor (610) arranged on the fixing seat (210), wherein an output shaft of the motor (610) is connected with the first screw rod, and an output shaft of the motor (610) is connected with the second screw rod through a gear set in a transmission mode.

5. The multi-stage motorized telescopic bracket of claim 4, wherein:

the output shaft of the motor (610) is provided with a driving gear (620), the lower end of the first screw is provided with a first pivot (410) penetrating through the fixed seat (210) and capable of rotating relative to the fixed seat (210), and the first pivot (410) is provided with a first driven gear (630) meshed with the driving gear (620).

6. The multi-stage motorized telescopic bracket of claim 5, wherein:

the lower extreme of second screw rod is equipped with wears to locate fixing base (210) and can be relative fixing base (210) pivoted second pivot spare (501), be equipped with on second pivot spare (501) with second driven gear (640) that driving gear (620) engaged with, second driven gear (640) with specification of first driven gear (630) is the same, first screw rod with the screw structure of second screw rod is unanimous.

7. A multi-stage motorized telescopic bracket according to claim 3, wherein:

the cross sections of the transmission rod (510) and the transmission groove (521) are D-shaped.

8. A multi-stage motorized telescopic support according to claim 2, wherein:

and limiting pieces (700) which can be abutted against the corresponding connecting seats (310) are fixedly arranged on the upper parts of the first screw rod and the second screw rod.

9. A multi-stage motorized telescopic bracket according to claim 1, wherein:

the base (100) comprises a bottom plate (110) and an arc-shaped plate (120) arranged above the bottom plate (110) in a cambered mode, positioning holes for the lower ends of the fixing pipes (200) to penetrate through are formed in the arc-shaped plate (120), a containing cavity is defined between the arc-shaped plate (120) and the bottom plate (110), and the electric device (600) is located in the containing cavity.

10. A multi-stage motorized telescopic bracket according to claim 1, wherein:

the end face of the movable pipe (300) at the tail end is provided with a bearing plate (800), the middle part of the bearing plate (800) is provided with an installation perforation opposite to the inner channel of the movable pipe (300), the anti-falling plug (900) is arranged in the installation perforation in a penetrating mode to be connected with the movable pipe (300), and the middle part of the anti-falling plug (900) is provided with a connecting hole (910).