CN219845364U - Height-adjustable multi-fold umbrella - Google Patents

Abstract

The utility model discloses a multi-fold umbrella with adjustable height, which comprises a middle rod, an upper nest arranged at the upper end of the middle rod, a lower nest movably sleeved on the middle rod, an umbrella framework pivoted with the upper nest and the lower nest, an umbrella opening and closing mechanism for driving the middle rod and the umbrella framework to open and close, and a power mechanism for providing power for the umbrella opening and closing mechanism; the folding action of the middle rod controlled by the umbrella folding mechanism is advanced to the folding action of the umbrella framework. The height-adjustable multi-fold umbrella can adjust the use height and meet different use requirements of people.

Description

Height-adjustable multi-fold umbrella

Technical Field

The utility model relates to the field of umbrellas, in particular to a height-adjustable multi-fold umbrella.

Background

The existing multi-fold umbrella has a problem whether the traditional multi-fold umbrella is manually opened and closed or the traditional electric multi-fold umbrella can be automatically opened and closed: that is, the existing multi-fold umbrella cannot freely adjust the use height, cannot be well suitable for different requirements of different crowds on the use requirements of the umbrella in different scenes, and has limitations; the use height refers to the height at which the middle stick can be stably unfolded when the canopy of the multi-fold umbrella is opened. Therefore, a multi-fold umbrella with adjustable use height is needed to be researched so as to meet different use demands of people.

Disclosure of Invention

The utility model aims to provide a multi-fold umbrella with adjustable height, which can adjust the use height to meet different use demands of people.

In order to achieve the above object, the solution of the present utility model is:

the utility model provides an adjustable height multi-fold umbrella, its includes well stick, sets up the upper nest of well stick upper end, the movable cover is put down nest on well stick and with upper nest and lower nest pivoted umbrella skeleton, well stick includes two at least body that overlap in proper order, the pipe diameter of each body of well stick increases in proper order from top to bottom or from bottom to top, the top and the lower body are respectively in each body of well stick is upper pipe and lower pipe; umbrella cloth is matched on the umbrella framework; the height-adjustable multi-fold umbrella further comprises an umbrella opening and closing mechanism and a power mechanism; the power mechanism provides power for the umbrella opening and closing mechanism, the umbrella opening and closing mechanism is used for driving the middle rod and the umbrella framework to open and close, and the umbrella opening and closing mechanism controls the closing action of the middle rod to be advanced relative to the closing action of the umbrella framework.

The number of the tube bodies of the middle rod is at least three, and the uppermost tube body and the lowermost tube body in the tube bodies of the middle rod are respectively an upper tube and a lower tube; the umbrella opening and closing mechanism comprises a telescopic rod group and a driving rope; the telescopic rod group comprises at least three rod bodies which are sequentially in threaded connection, the number of the rod bodies of the telescopic rod group is the same as that of the tube bodies of the middle rod, each rod body of the telescopic rod group is arranged in the middle rod in a penetrating manner, the diameters of the rod bodies are sequentially increased from top to bottom or from bottom to top, the uppermost rod body and the lowermost rod body in each rod body of the telescopic rod group are respectively an upper rod and a lower rod, and the upper rod is connected with the upper tube; the rod bodies of the telescopic rod group are respectively and correspondingly arranged with the pipe bodies of the middle rod one by one, and the other rod bodies except the upper rod and the lower rod of the telescopic rod group are in up-and-down limit fit with the corresponding pipe bodies; the first end of the driving rope is connected with one pipe body except the upper pipe and the lower pipe in the pipe bodies of the middle rod, the pipe body connected with the first end of the driving rope is a control pipe, the rod bodies corresponding to the control pipe are control rods, and the screw joint of the two adjacent rod bodies with the minimum rotation resistance is lower than the screw joint of the control rod and the rod body above the control rod; the second end of the driving rope passes through a fixed pulley, then passes out of the upper pipe and is matched with the lower nest; the umbrella framework is provided with an umbrella folding spring which is used for driving the umbrella framework to fold; the power mechanism is arranged at the lower end of the middle rod and used for driving the lower rod to rotate positively and reversely.

The multi-fold umbrella with the adjustable height further comprises a tensioning sleeve and a tensioning spring, wherein the tensioning sleeve and the tensioning spring are movably sleeved on the middle rod, the tensioning sleeve is arranged between the upper nest and the lower nest, two ends of the tensioning spring respectively lean against the tensioning sleeve and the lower nest, and the lower nest is matched with a rotatable lower nest pulley; the second end of the driving rope bypasses the lower nest pulley and is connected with the tensioning sleeve.

The upper end of the rod body and the upper end of the pipe body are provided with limiting parts, and the upper end of the rod body are provided with pressing blocks for pressing the limiting parts.

An anti-falling mechanism is arranged between two adjacent rod bodies of the telescopic rod group; the anti-disengaging mechanism between two adjacent rod bodies comprises an anti-disengaging piece arranged at the lower end of the rod body at the inner side of the two adjacent rod bodies and a stop edge arranged at the inner wall of the rod body at the outer side of the two adjacent rod bodies, and the anti-disengaging piece and the stop edge of the anti-disengaging mechanism are movably abutted to prevent the two adjacent rod bodies from being separated.

The power mechanism comprises a connecting seat and a power source arranged in the connecting seat; the connecting seat is detachably connected with the lower end of the middle rod, and the power source is detachably matched with the lower rod and used for driving the lower rod to rotate forwards and reversely.

The lower end of the middle rod is matched with a rotatable connector, and the connector is in threaded connection with the connecting seat.

The lower rod is provided with a slot; the power source is provided with a power shaft matched with the slot key groove of the lower rod.

The power source is a motor or a speed reducer.

A release-stopping mechanism is arranged between two adjacent pipe bodies of the middle rod; the anti-disengaging mechanism between two adjacent pipe bodies comprises a limiting part arranged at the upper end of the pipe body at the lower side in the two adjacent pipe bodies and a positioning part arranged at the lower end of the pipe body at the upper side in the two adjacent pipe bodies, wherein the positioning part and the limiting part are in movable interference to prevent the separation of the two adjacent pipe bodies.

After the scheme is adopted, the folding action of the middle rod is controlled by the umbrella folding mechanism to be advanced relative to the folding action of the umbrella framework, so that a user can control the middle rod to fold a certain length when the umbrella framework is kept in a unfolded state, and further the unfolding length of the middle rod is adjusted to adjust the use height of the height-adjustable multi-fold umbrella, so that different use requirements of people are met.

Drawings

FIG. 1 is a partially exploded view of the structure of the present utility model;

FIG. 2 is a schematic diagram of the structure of the present utility model (fully extended umbrella frame, fully extended middle rod);

FIG. 3 is a schematic diagram of the second structure of the present utility model (the umbrella frame is fully extended and the middle rod is retracted to a certain length);

FIG. 4 is a schematic view of the partial structure of the present utility model (fully extended umbrella frame, fully extended middle stick);

FIG. 5 is a schematic view of a part of the second embodiment of the present utility model (fully collapsed umbrella frame and fully collapsed middle rod);

FIG. 6 is a schematic diagram of a portion of a third embodiment of the present utility model;

FIG. 7 is a schematic view of a partial structure of a lower rod of the present utility model;

FIG. 8 is a partial cross-sectional view of the present utility model (fully extended umbrella frame, fully extended center stick);

FIG. 9 is an enlarged view of FIG. 8 at a;

FIG. 10 is an enlarged view at b of FIG. 8;

FIG. 11 is an enlarged view at c of FIG. 8;

FIG. 12 is an enlarged view of FIG. 8 at d;

FIG. 13 is a partial sectional view of a second embodiment of the present utility model (fully extended umbrella frame, fully extended center stick);

FIG. 14 is an enlarged view of FIG. 13 at e;

fig. 15 is an enlarged view at f of fig. 13;

FIG. 16 is an enlarged view at g of FIG. 13;

FIG. 17 is a partial sectional view III (umbrella frame fully extended, middle stick collapsed to a certain length) of the present utility model;

FIG. 18 is an enlarged view at h of FIG. 17;

FIG. 19 is an enlarged view at i of FIG. 17;

FIG. 20 is a partial sectional view of a fourth embodiment of the present utility model (fully collapsed umbrella frame, fully collapsed center stick);

FIG. 21 is an enlarged view at j of FIG. 20;

FIG. 22 is an enlarged view at k of FIG. 20;

description of the reference numerals:

a middle rod 1, a pipe body 11, an upper pipe 1101, a lower pipe 1102, a control pipe 1103, an upper pipe plug 111, a yielding gap 112, a limiting member 113, a positioning member 114, a fixed pulley 12, a connector 13,

the upper nest (2) is arranged on the upper nest,

the lower nest 3, the lower nest pulley 31,

umbrella frame 4, umbrella cloth 400, umbrella folding spring 401,

the umbrella opening and closing mechanism 5, the telescopic rod group 51, the rod body 510, the upper rod 5101, the lower rod 5102, the control rod 5103, the lower pressing block 511, the anti-falling piece 512, the stop edge 513, the slot 514, the driving rope 52,

a power mechanism 6, a connecting seat 61, a power source 62, a power shaft 621, a control device 63, a control panel 631, an opening and closing button 632,

the tension sleeve 7 is provided with a plurality of tension sleeves,

tensioning the spring 8.

Description of the embodiments

In order to further explain the technical scheme of the utility model, the utility model is explained in detail by specific examples.

As shown in fig. 1 to 22, the present utility model discloses a multi-fold umbrella with adjustable height, wherein a stick 1, an upper nest 2 arranged at the upper end of the middle stick 1, a lower nest 3 movably sleeved on the middle stick 1, an umbrella frame 4 pivoted with the upper nest 2 and the lower nest 3, an umbrella opening and closing mechanism 5 for driving the middle stick 1 and the umbrella frame 4 to open and close, and a power mechanism 6 for providing power for the umbrella opening and closing mechanism 5; the middle rod 1 comprises at least two sequentially sleeved pipe bodies 11, and the pipe diameter of each pipe body 11 of the middle rod 1 is sequentially increased from top to bottom or from bottom to top; the umbrella frame 4 is matched with an umbrella cloth 400. The umbrella opening and closing mechanism 5 controls the closing and closing action of the middle rod 1 to be advanced relative to the closing and closing action of the umbrella framework 4, so that a user can control the middle rod 1 to be closed for a certain length when the umbrella framework 4 is kept in an unfolded state, and further the unfolding length of the middle rod 1 is adjusted to adjust the using height of the height-adjustable multi-fold umbrella disclosed by the utility model, so that different using requirements of people are met.

Specifically, in the embodiment of the present utility model, the number of the tubes 11 of the middle rod 1 is at least three, and the uppermost tube 11 and the lowermost tube 11 in the tubes 11 of the middle rod 1 are respectively an upper tube 1101 and a lower tube 1102; the umbrella opening and closing mechanism 5 comprises a telescopic rod group 51 and a driving rope 52; the telescopic rod group 51 comprises at least three rod bodies 510 which are sequentially connected in a screwed manner, the number of the rod bodies 510 of the telescopic rod group 51 is the same as that of the tube bodies 11 of the middle rod 1, each rod body 510 of the telescopic rod group 51 penetrates through the middle rod 1, the diameters of the rod bodies 510 are sequentially increased from top to bottom or from bottom to top, each rod body 510 of the telescopic rod group 51 and each tube body 11 of the middle rod 1 are respectively arranged in a one-to-one correspondence manner, the uppermost rod body 510 and the lowermost rod body 510 in each rod body 510 of the telescopic rod group 51 are respectively an upper rod 5101 and a lower rod 5102, the upper rod 5101 is connected with the upper tube 5102, the rest rod bodies 510 except the upper rod 5101 and the lower rod 5102 are in up-and-down limit fit with the corresponding tube bodies 11, and therefore, when a certain rod body 510 of the telescopic rod group 51 is retracted, the rod bodies 510 synchronously drive the tube bodies 11 corresponding to the rod bodies 510 to be retracted; the first end of the driving rope 52 is connected to one pipe body 11 except the upper pipe 1101 and the lower pipe 1102 in each pipe body 11 of the middle rod 1, the pipe body 11 connected to the first end of the driving rope 52 is denoted as a control pipe 1103, the rod body corresponding to the control pipe 1103 is a control rod 5103, the second end of the driving rope 52 passes through a fixed pulley 12 and then passes out of the upper pipe 1101 and is matched with the lower nest 2, the umbrella frame 4 is provided with an umbrella folding spring 401, and the umbrella folding spring 401 is used for driving the umbrella frame 4 to fold, and the arrangement of the umbrella folding spring 401 is the prior art and is not repeated herein. The power mechanism 6 is arranged at the lower end of the middle rod 1 and is used for driving the lower rod 5102 to rotate forward and backward, so as to drive the umbrella opening and closing mechanism 5.

In the embodiment of the utility model, when the umbrella is opened, the user controls the power mechanism 6 to drive the lower rod 5102 of the telescopic rod group 51 to rotate forward, so that the rod bodies 510 of the telescopic rod group 51 rotate relatively to enable the rod bodies 510 of the telescopic rod group 51 to be unfolded relatively, the rod bodies 510 of the telescopic rod group 51 can drive the pipe bodies 11 of the middle rod 1 to be unfolded relatively, and the pipe bodies 11 of the middle rod 1 are unfolded, so that the control pipe 1103 connected with the driving rope 52 can pull the lower nest 3 to move upwards through the driving rope 52 to enable the umbrella framework 4 to be unfolded; when the umbrella is folded, the user controls the power mechanism 6 to drive the lower rod 5102 of the telescopic rod group 51 to rotate reversely, so that the rod bodies 510 of the telescopic rod group 51 rotate relatively to fold the rod bodies 510 of the telescopic rod group 51 relatively, the rod bodies 510 of the telescopic rod group 51 fold the pipe bodies 11 of the middle rod 1 relatively, and the control pipe 5103 in the pipe bodies 11 of the middle rod 1 fold the transmission rope 52 is released, so that the umbrella folding spring 401 drives the lower nest 3 to move downwards to fold the umbrella framework 4. In the telescopic rod group 51 of the present utility model, the screw joint of the adjacent two rod bodies 510 having the smallest rotational resistance to each other is lower than the screw joint of the control rod 5103 and the rod body 510 above the control rod 5103 (i.e., the rotational resistance between the control rod 5103 and the lower rod body 510 screw-connected thereto is the smallest of the rotational resistances between the adjacent two rod bodies 510 of the telescopic rod group 51 and/or the rotational resistance between the adjacent two rod bodies 510 of the rod bodies 510 below the control rod 5103 is the smallest of the rotational resistances between the adjacent two rod bodies 510 of the telescopic rod group 51); when the power mechanism 6 drives the lower rod 5102 to rotate forward or reversely, two adjacent rod bodies 510 with the smallest rotation resistance can rotate relatively first, so that after the middle rod 1 is unfolded to the maximum length and the umbrella framework 4 is unfolded, a user controls the lower rod 5102 of the telescopic rod group 51 to rotate reversely to control the rods 510 of the telescopic rod group 51 to relatively retract so as to drive the tubes 11 of the middle rod 1 to retract, at least one rod body 510 of the telescopic rod group 51 below the control rod 5103 can drive the tubes 11 corresponding to the rods 510 to retract, and the condition that the retracting action of the middle rod 1 is advanced than the retracting action of the umbrella framework 4 can be realized, so that the user can control the middle rod 1 to retract for a certain length when the umbrella framework 4 is kept in an unfolded state, and further adjust the unfolding length of the middle rod 1.

In the embodiment of the present utility model, the number of the tube bodies 11 of the middle rod 1 and the number of the rod bodies 510 of the telescopic rod group 51 may be specifically four, the tube diameters of the tube bodies 11 of the middle rod 1 increase sequentially from bottom to top, and the diameters of the rod bodies 510 of the telescopic rod group 51 increase sequentially from top to bottom, so that enough space can be easily provided for arranging the driving rope 52 in the middle rod 1. The fixed pulley 12 may be mounted at the upper end of the upper tube 1101, specifically, the upper end of the upper tube 1101 is fitted with an upper tube plug 111, the fixed pulley 12 is mounted on the upper tube plug 12, and the upper tube 1101 is provided with a yielding gap 112 corresponding to the fixed pulley 12 to allow the driving rope 52 to pass through; the fixed pulley 12 of the present utility model is not limited to being mounted on the upper end of the upper tube 1101, and the fixed pulley 12 may be mounted on the upper nest 2.

In the embodiment of the utility model, a limiting piece 113 is arranged at the upper end of a rod body 510 which is matched with the upper limit and the lower limit and the upper end of a tube body 11 in the tube body 11, and a pressing block 511 for pressing the limiting piece 113 is arranged at the upper end of the rod body 510 which is matched with the upper limit and the lower limit and the upper end of the rod body 510 in the tube body 11; the utility model realizes the up-and-down limit matching between the rod body 510 and the pipe body 11 through the matching of the lower pressing block 511 and the limit piece 113, so that when a certain rod body 510 of the telescopic rod group 51 is folded, the rod body 510 synchronously drives the pipe body 11 corresponding to the rod body 510 to be folded.

In the embodiment of the present utility model, an anti-disengaging mechanism is disposed between two adjacent rod bodies 510 of the telescopic rod group 51, so as to avoid the situation that the rod bodies 510 are disengaged after the rod bodies 510 of the telescopic rod group 51 are relatively unfolded; the anti-disengaging mechanism between two adjacent rod bodies 510 comprises an anti-disengaging member 512 arranged at the lower end of the rod body 510 positioned at the inner side in the two adjacent rod bodies 510 and a stop edge 513 arranged on the inner wall of the rod body 510 positioned at the outer side in the two adjacent rod bodies 510, wherein the anti-disengaging member 512 and the stop edge 513 of the anti-disengaging mechanism are movably abutted to prevent the two adjacent rod bodies 510 from being separated. A release stopping mechanism is arranged between two adjacent pipe bodies 11 of the middle rod 1 so as to avoid the situation that the pipe bodies 11 fall off after the pipe bodies 11 of the middle rod 1 are relatively unfolded; the anti-disengaging mechanism between two adjacent pipe bodies 11 comprises a limiting piece 113 arranged at the upper end of the pipe body 11 at the lower side in the two adjacent pipe bodies 11 and a positioning piece 114 arranged at the lower end of the pipe body 11 at the upper side in the two adjacent pipe bodies 11, wherein the positioning piece 114 and the limiting piece 113 are in movable interference to prevent the two adjacent pipe bodies 11 from being separated; the respective tube bodies 11 of the center rod 1 do not rotate relative to each other.

In the embodiment of the present utility model, the power mechanism 6 includes a connecting seat 61 connected to the lower end of the middle rod 1, and a power source 62 installed in the connecting seat 61, where the power source 62 is matched with the lower rod 5102 to drive the lower rod 5102 to rotate forward or backward, and the power source 62 may be a motor or a speed reducer; wherein the connecting seat 61 is detachably connected with the lower end of the middle rod 1, the connecting seat 61 is used for being fixedly installed on a vehicle (a two-wheel vehicle or a three-wheel vehicle), the power source 62 is detachably matched with the lower rod 5102, so that when a user does not need to use the height-adjustable multi-fold umbrella of the utility model on the vehicle, the user can separate the connecting seat 61 from the lower end of the middle rod 1 and separate the power source 62 from the lower rod 5102, and the rest parts of the height-adjustable multi-fold umbrella of the utility model except the power mechanism 6 are removed; after that, if the user needs to continue to use the height-adjustable multi-fold umbrella, the user only needs to connect the connecting seat 61 with the lower end of the middle rod 1 and connect the power source 62 with the lower rod 5102, so that the operation is convenient; in addition, when the power source 62 is damaged or the power source 62 is not supplied with power, the user can separate the connecting seat 61 from the lower end of the middle rod 1 and separate the power source 62 from the lower rod 5102, and then the user can manually operate the lower rod 5102 to open and close the umbrella, so that the manual opening and closing of the height-adjustable multi-fold umbrella is realized, and the basic use requirement of the user on the umbrella is ensured.

In the embodiment of the utility model, the rotatable connector 13 is matched with the lower end of the middle rod 1, the connector 13 can be rotatably matched with the lower end of the lower pipe 1102, and the connecting seat 61 is in threaded connection with the connector 13, so that a user can directly assemble and disassemble the connecting seat 61 and the middle rod 1 by hands, and the user is convenient; it should be noted that, the connecting seat 61 and the middle rod 1 of the present utility model may also be matched by adopting other detachable structures, so long as the disassembly and assembly between the connecting seat 61 and the middle rod 1 are simple and convenient.

In the embodiment of the present utility model, the lower rod 5102 is provided with a slot 514, and the power source 62 is provided with a power shaft 621 which is matched with the slot 514 of the lower rod 5102 in a key way, so that the lower rod 5102 and the power source 62 are convenient to assemble and disassemble; the slot 514 may also be provided to facilitate the user in rotating the lower rod 5102; when the user separates the connecting seat 61 from the lower end of the middle rod 1 and separates the power source 62 from the lower rod 5102, the user can detach the tool such as a key into the slot 514 of the lower rod 5102, so that the user can apply force to rotate the lower rod 5102 conveniently; the slot 514 of the lower stem 5102 may be a slot to facilitate key insertion to rotate the lower stem 5102; the slot 514 may also be a cross-shaped slot that also allows a key to be inserted to turn the lower stem 5102.

In the embodiment of the present utility model, the power mechanism 6 further includes a control device 63 mounted on the connection seat 61 and electrically connected to the power source 62, the user controls the power source 62 through the control device 63, and the control device 63 may include a control board 631 electrically connected to the power source 62 and an on/off button 632 disposed on the control board 631; the power supply of the power source 62 may be from a battery installed in the connection seat 61, or may be input from an external power source (e.g., a power source of a vehicle output).

In the embodiment of the utility model, the height-adjustable multi-fold umbrella further comprises a tensioning sleeve 7 and a tensioning spring 8 which are movably sleeved on the middle rod 1, wherein the tensioning sleeve 7 is positioned between the upper nest 2 and the lower nest 3, two ends of the tensioning spring 8 respectively lean against the tensioning sleeve 7 and the lower nest 3, and the lower nest 3 is matched with a rotatable lower nest pulley 31; the second end of the driving rope 52 is connected with the tensioning sleeve 7 after passing around the lower nest pulley 31. The tensioning spring 8 can exert elasticity on the tensioning sleeve 7 and the lower nest 3 to enable the driving rope 52 to be in a tensioning state, so that the driving rope 52 is prevented from loosening to interfere with the opening and closing of the height-adjustable multi-fold umbrella, meanwhile, the requirement on the installation precision of the driving rope 52 can be reduced, and the production efficiency is improved.

The above examples and drawings are not intended to limit the form or form of the present utility model, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present utility model.

Claims (10)

1. The utility model provides an adjustable height multi-fold umbrella, its includes well stick, sets up the upper nest of well stick upper end, the movable cover is put down nest on well stick and with upper nest and lower nest pivoted umbrella skeleton, well stick includes two at least body that overlap in proper order, the pipe diameter of each body of well stick increases in proper order from top to bottom or from bottom to top, the top and the lower body are respectively in each body of well stick is upper pipe and lower pipe; umbrella cloth is matched on the umbrella framework; the method is characterized in that: the umbrella also comprises an umbrella opening and closing mechanism and a power mechanism;

the power mechanism provides power for the umbrella opening and closing mechanism, the umbrella opening and closing mechanism is used for driving the middle rod and the umbrella framework to open and close, and the umbrella opening and closing mechanism controls the closing action of the middle rod to be advanced relative to the closing action of the umbrella framework.

2. A multi-fold umbrella of claim 1, wherein: the number of the tube bodies of the middle rod is at least three, and the uppermost tube body and the lowermost tube body in the tube bodies of the middle rod are respectively an upper tube and a lower tube;

the umbrella opening and closing mechanism comprises a telescopic rod group and a driving rope;

the telescopic rod group comprises at least three rod bodies which are sequentially in threaded connection, the number of the rod bodies of the telescopic rod group is the same as that of the tube bodies of the middle rod, each rod body of the telescopic rod group is arranged in the middle rod in a penetrating manner, the diameters of the rod bodies are sequentially increased from top to bottom or from bottom to top, the uppermost rod body and the lowermost rod body in each rod body of the telescopic rod group are respectively an upper rod and a lower rod, and the upper rod is connected with the upper tube; the rod bodies of the telescopic rod group are respectively and correspondingly arranged with the pipe bodies of the middle rod one by one, and the other rod bodies except the upper rod and the lower rod of the telescopic rod group are in up-and-down limit fit with the corresponding pipe bodies;

the first end of the driving rope is connected with one pipe body except the upper pipe and the lower pipe in the pipe bodies of the middle rod, the pipe body connected with the first end of the driving rope is a control pipe, the rod bodies corresponding to the control pipe are control rods, and the screw joint of the two adjacent rod bodies with the minimum rotation resistance is lower than the screw joint of the control rod and the rod body above the control rod; the second end of the driving rope passes through a fixed pulley, then passes out of the upper pipe and is matched with the lower nest; the umbrella framework is provided with an umbrella folding spring which is used for driving the umbrella framework to fold;

the power mechanism is arranged at the lower end of the middle rod and used for driving the lower rod to rotate positively and reversely.

3. A multi-fold umbrella of claim 2, wherein: the tensioning sleeve is arranged between the upper nest and the lower nest, two ends of the tensioning spring respectively lean against the tensioning sleeve and the lower nest, and the lower nest is matched with a rotatable lower nest pulley;

the second end of the driving rope bypasses the lower nest pulley and is connected with the tensioning sleeve.

4. A multi-fold umbrella of claim 2, wherein: the upper end of the rod body and the upper end of the pipe body are provided with limiting parts, and the upper end of the rod body are provided with pressing blocks for pressing the limiting parts.

5. A multi-fold umbrella of claim 2, wherein: an anti-falling mechanism is arranged between two adjacent rod bodies of the telescopic rod group; the anti-disengaging mechanism between two adjacent rod bodies comprises an anti-disengaging piece arranged at the lower end of the rod body at the inner side of the two adjacent rod bodies and a stop edge arranged at the inner wall of the rod body at the outer side of the two adjacent rod bodies, and the anti-disengaging piece and the stop edge of the anti-disengaging mechanism are movably abutted to prevent the two adjacent rod bodies from being separated.

6. A multi-fold umbrella of claim 2, wherein: the power mechanism comprises a connecting seat and a power source arranged in the connecting seat; the connecting seat is detachably connected with the lower end of the middle rod, and the power source is detachably matched with the lower rod and used for driving the lower rod to rotate forwards and reversely.

7. A multi-fold umbrella of claim 6, wherein: the lower end of the middle rod is matched with a rotatable connector, and the connector is in threaded connection with the connecting seat.

8. A multi-fold umbrella of claim 6, wherein: the lower rod is provided with a slot; the power source is provided with a power shaft matched with the slot key groove of the lower rod.

9. A multi-fold umbrella of adjustable height as claimed in claim 6 or 8, wherein: the power source is a motor or a speed reducer.

10. A multi-fold umbrella of claim 1 or 2, wherein: a release-stopping mechanism is arranged between two adjacent pipe bodies of the middle rod;

the anti-disengaging mechanism between two adjacent pipe bodies comprises a limiting part arranged at the upper end of the pipe body at the lower side in the two adjacent pipe bodies and a positioning part arranged at the lower end of the pipe body at the upper side in the two adjacent pipe bodies, wherein the positioning part and the limiting part are in movable interference to prevent the separation of the two adjacent pipe bodies.