Integrated umbrella convenient to fold and store

Abstract

The integrated umbrella convenient to fold and store comprises a retractable umbrella column, a sealing cover is fixed to the upper portion of the retractable umbrella column, a handle is installed on the lower portion of the retractable umbrella column, a fixed hinge ring, a sliding hinge ring and an umbrella storage container are sequentially arranged on the retractable umbrella column from top to bottom, and an opening and closing spring is arranged between the fixed hinge ring and the sliding hinge ring. A plurality of umbrella ribs are hinged between the outer wall of the fixed hinge ring and the outer wall of the sliding hinge ring, umbrella cloth is arranged between all the umbrella ribs and the sealing cover, a centering sliding seat is arranged in the umbrella folding container and installed on a retractable umbrella column in a sliding mode, a hook is arranged on the sliding hinge ring, a pulley is arranged on the fixed hinge ring, and a hook cylinder is arranged in the retractable umbrella column. A lifting rope is connected between the hook and the hook cylinder and is wound on the pulley, a clamping hook is hinged in the hook cylinder, and a button for controlling the clamping hook to rotate is arranged on the handle. The device is of an integrated structure, and is high in integration level and more portable; and in rainy days, the storage is more convenient, and an additional storage bag is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of umbrella, especially to a one-piece umbrella convenient to fold and store. BACKGROUND

[0002] Umbrella is a commonly used tool, which is used for shielding body parts in rainy weather and is widely used. In order to save the space occupied by the umbrella, various folding umbrellas have emerged as the times require. However, the traditional folding umbrella, such as three-fold umbrella and five-fold umbrella, still needs an additional storage bag for storage after folding, and the portability is insufficient. The separation design of the umbrella and the storage bag makes the use more cumbersome. At the same time, it is inconvenient to store in the rain, and the rainwater on the umbrella surface drips randomly. SUMMARY

[0003] The utility model aims at solving the prior art's insufficient, and provides a one-piece umbrella convenient to fold and store.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A one-piece umbrella convenient to fold and store, comprising a retractable umbrella column, a cover is fixed on the upper part of the retractable umbrella column, and a handle is installed on the lower part of the retractable umbrella column, a fixed hinge ring, a sliding hinge ring and a umbrella storage container are sequentially arranged on the retractable umbrella column from top to bottom, the fixed hinge ring is fixedly arranged at the bottom of the cover, a opening and closing spring is arranged between the fixed hinge ring and the sliding hinge ring, a plurality of ribs are hingedly arranged between the outer walls of the fixed hinge ring and the sliding hinge ring, a canopy is arranged between all the ribs and the cover, a centering slide is arranged in the umbrella storage container, the centering slide is slidingly installed on the retractable umbrella column, a hook is arranged on the sliding hinge ring, a pulley is arranged on the fixed hinge ring, a hook cylinder is arranged in the retractable umbrella column, a lifting rope is connected between the hook and the hook cylinder and is wound on the pulley, a hook is hingedly arranged in the hook cylinder, and a button for controlling the rotation of the hook is arranged on the handle.

[0006] The retractable umbrella column comprises a first section column body, a second section column body and a third section column body, a first section bottom column is arranged at the bottom of the first section column body, a second section bottom column is arranged at the bottom of the second section column body, a locking inner column is arranged in the retractable umbrella column, a spring fixing ring is arranged on the outer wall of the locking inner column, an inner control spring is fixedly arranged at the bottom of the spring fixing ring, the inner control spring is sleeved on the outside of the locking inner column, the bottom of the inner control spring is fixedly arranged at the bottom of the third section column body, a locking pin is arranged on the outer wall of the locking inner column above the spring fixing ring, the hook cylinder is fixedly arranged at the bottom of the locking inner column, a locking pin hole is arranged on the outer wall of the second section column body corresponding to the locking pin, an arc-shaped convex rib is arranged on the side wall of the first section bottom column, an intermediate positioning column is fixedly arranged in the second section column body, and the intermediate positioning column is inserted into the inside of the locking inner column.

[0007] A first through groove is arranged at the lower end of the outer wall of the hook cylinder, the first through groove is arranged corresponding to the hook, a second through groove is arranged at the lower end of the outer wall of the third section column body, and a downward inclined surface is arranged at the top of the locking pin.

[0008] The handle comprises a handle shell, a third section column body is fixed at the bottom of the handle shell, an inner seat is fixed in the handle shell, a pressing seat is installed on one side of the inner seat through two supporting springs, a button is installed on the outer wall of the pressing seat and penetrates the handle shell, an inner pressing plate is arranged on the inner wall of the pressing seat, and the inner pressing plate is arranged correspondingly to the first through slot, the second through slot and the clamping hook.

[0009] A plurality of upper hinge grooves are arranged on the outer wall of the fixed hinge ring in a circle, a plurality of lower hinge grooves are arranged on the outer wall of the sliding hinge ring in a circle, the upper hinge grooves and the lower hinge grooves are arranged one by one in a corresponding manner, and the umbrella ribs are hinged between the upper hinge grooves and the lower hinge grooves.

[0010] The umbrella rib comprises a first upper connecting rod hinged in the upper hinge groove and a first lower connecting rod hinged in the lower hinge groove, the first upper connecting rod is hinged with a second upper connecting rod, the second upper connecting rod is hinged with a third upper connecting rod, the third upper connecting rod is hinged with a canopy connecting rod, the canopy is connected with the canopy connecting rod, the first lower connecting rod is hinged with a second lower connecting rod, the second lower connecting rod is hinged with the canopy connecting rod, the first upper connecting rod is hinged with the middle part of the first lower connecting rod, and the third upper connecting rod is hinged with the end part of the first lower connecting rod.

[0011] The umbrella container comprises a cylindrical containing barrel, the bottom of the cylindrical containing barrel is provided with a sealing plate, the bottom of the sealing plate is provided with a conical guide seat, and the inner wall of the cylindrical containing barrel is provided with a lower pressing ring at the upper end.

[0012] The umbrella is of an integrated structure, has high integration degree and is more portable, and is more convenient to store in rainy days without an additional storage bag. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The figure shows the state of the umbrella when it is folded;

[0014] Figure 2 The figure shows the state of the umbrella when it is folded; Figure 1 The figure shows the state of the umbrella when it is folded;

[0015] Figure 3 The figure shows the state of the umbrella when it is folded;

[0016] Figure 4 The figure shows the state of the umbrella when it is folded;

[0017] Figure 5 The figure shows the state of the umbrella when it is folded; Figure 4 The figure shows the state of the umbrella when it is folded;

[0018] Figure 6 The figure shows the state of the umbrella when it is folded;

[0019] Figure 7The second section cylinder and the third section cylinder internal structure schematic view of the utility model is shown in the figure;

[0020] Figure 8 The schematic view of the hook cylinder and the hook is shown in the figure;

[0021] Figure 9 The schematic view of the fixed hinge ring, the sliding hinge ring and the umbrella rib is shown in the figure;

[0022] Figure 10 The schematic view of the fixed hinge ring is shown in the figure;

[0023] Figure 11 The schematic view of the sliding hinge ring is shown in the figure;

[0024] Figure 12 The schematic view of the handle is shown in the figure;

[0025] Figure 13 The schematic view of the handle internal structure is shown in the figure;

[0026] Figure 14 The schematic view of one direction of the centering slide is shown in the figure;

[0027] Figure 15 The schematic view of another direction of the centering slide is shown in the figure;

[0028] Figure 16 The schematic view of one direction of the umbrella container is shown in the figure;

[0029] Figure 17 The schematic view of another direction of the umbrella container is shown in the figure;

[0030] Figure 18 The schematic view of the utility model during unfolding or folding is shown in the figure;

[0031] Figure 19 The schematic view of the utility model during unfolding or folding is shown in the figure; Figure 18 The schematic view after omitting the umbrella container and the umbrella cloth is shown in the figure;

[0032] Figure 20 The second section cylinder and the third section cylinder internal structure schematic view of the utility model during unfolding or folding is shown in the figure;

[0033] In the figure: 1 - the retractable umbrella cylinder; 2 - the cover; 3 - the handle; 4 - the fixed hinge ring; 5 - the sliding hinge ring; 6 - the umbrella container; 7 - the opening and closing spring; 8 - the umbrella rib; 9 - the umbrella cloth; 10 - the centering slide; 11 - the hook; 12 - the pulley; 13 - the hook cylinder; 14 - the hook; 15 - the button;

[0034] 101 - first section cylinder; 102 - second section cylinder; 103 - third section cylinder; 104 - first section bottom cylinder; 105 - second section bottom cylinder; 106 - locking inner cylinder; 107 - spring fixing ring; 108 - inner control spring; 109 - locking pin; 110 - locking pin hole; 111 - arc-shaped convex rib; 112 - middle positioning cylinder; 113 - first through slot; 114 - second through slot;

[0035] 301 - handle shell; 302 - inner seat; 303 - supporting spring; 304 - pressing seat; 305 - inner pressing plate;

[0036] 401 - upper hinged slot; 402 - pulley mounting slot;

[0037] 501 - lower hinged slot;

[0038] 601 - cylindrical accommodating cylinder; 602 - sealing plate; 603 - conical guide seat; 604 - downward pressing blocking ring;

[0039] 801 - first upper connecting rod; 802 - second upper connecting rod; 803 - third upper connecting rod; 804 - first lower connecting rod; 805 - second lower connecting rod; 806 - umbrella cloth connecting rod;

[0040] 1001 - centering inner ring; 1002 - centering outer ring; 1003 - connecting rod; 1004 - extending seat; 1005 - mounting slot; 1006 - blocking block; 1007 - locking pin avoiding slot;

[0041] The principles and features of the present application will be described in detail below with reference to the embodiments of the present application and the accompanying drawings. DETAILED DESCRIPTION

[0042] The principles and features of the present application will be described in detail below with reference to the embodiments of the present application and the accompanying drawings.

[0043] It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or there can be intervening components. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be intervening components. When a component is referred to as being "disposed" on another component, it can be directly on the other component or there can be intervening components. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the singular forms "a", "an" and "the" include plural references unless the context clearly dictates otherwise.

[0045] The application will be further described below with reference to the drawings and embodiments:

[0046] A one-piece umbrella convenient to fold and store can present two states, i.e. a folded state as shown in Figure 1 、 Figure 2 、 Figure 3 and an unfolded state as shown in Figure 4 、 Figure 5 . All the drawings omit the hanging rope, and the specific structure is as follows:

[0047] The umbrella comprises a retractable umbrella column 1, a cover 2 fixed on the upper part of the retractable umbrella column 1 and a handle 3 installed on the lower part of the retractable umbrella column 1, a fixed hinge ring 4, a sliding hinge ring 5 and a folding umbrella container 6 arranged on the retractable umbrella column 1 from top to bottom, the fixed hinge ring 4 being fixedly arranged at the bottom of the cover 2, an opening and closing spring 7 being arranged between the fixed hinge ring 4 and the sliding hinge ring 5, a plurality of umbrella ribs 8 being hingedly arranged between the outer walls of the fixed hinge ring 4 and the sliding hinge ring 5, an umbrella cloth 9 being arranged between all the umbrella ribs 8 and the cover 2, a centering sliding seat 10 being arranged in the folding umbrella container 6, the centering sliding seat 10 being slidingly installed on the retractable umbrella column 1, a hook 11 being arranged on the sliding hinge ring 5, a pulley 12 being arranged on the fixed hinge ring 4, a hook cylinder 13 being arranged in the retractable umbrella column 1, a hanging rope being connected between the hook 11 and the hook cylinder 13 and being wound on the pulley 12, a hook 14 being hingedly arranged in the hook cylinder 13, and a button 15 being arranged on the handle 3 to control the rotation of the hook 14.

[0048] The retractable umbrella column 1 is as shown in Figure 6 、 Figure 7 、 Figure 8As shown, it comprises a first section column body 101, a second section column body 102 and a third section column body 103, the bottom of the first section column body 101 is provided with a first section bottom column 104, the bottom of the second section column body 102 is provided with a second section bottom column 105, the retractable umbrella column 1 is internally provided with a locking inner column 106, the outer wall of the locking inner column 106 is provided with a spring fixing ring 107 at the upper end, the bottom of the spring fixing ring 107 is fixed with an inner control spring 108, the inner control spring 108 is sleeved on the outside of the locking inner column 106, the bottom of the inner control spring 108 is fixed at the bottom of the third section column body 103, the outer wall of the locking inner column 106 is provided with a locking pin 109 above the spring fixing ring 107, a hook cylinder 13 is fixed at the bottom of the locking inner column 106, the outer wall of the second section column body 102 is provided with a locking pin hole 110 at the upper end corresponding to the locking pin 109, the side wall of the first section bottom column 104 is provided with an arc-shaped convex rib 111, an intermediate positioning column 112 is fixed in the second section column body 102, and the intermediate positioning column 112 is inserted into the inside of the locking inner column 106.

[0049] The outer wall of the hook cylinder 13 is provided with a first through groove 113 at the lower end, the first through groove 113 is provided corresponding to the clamping hook 14, the outer wall of the third section column body 103 is provided with a second through groove 114 at the lower end, the top of the locking pin 109 is provided with a downward inclined surface, which facilitates the pressing of the locking pin 109 when being retracted and the unlocking.

[0050] The first section column body 101, the second section column body 102 and the first section bottom column 104 are all regular hexagonal structures, and the third section column body 103 and the second section bottom column 105 are both cylindrical structures.

[0051] As shown in Figure 12 , Figure 13 , the handle 3 comprises a handle shell 301, the lower end of the third section column body 103 is fixed at the inner bottom of the handle shell 301, an inner seat 302 is fixed in the handle shell 301, a pressing seat 304 is mounted on one side of the inner seat 302 through two supporting springs 303, the button 15 is mounted on the outer wall of the pressing seat 304 and penetrates out of the handle shell 301, an inner pressing plate 305 is arranged on the inner wall of the pressing seat 304, and the inner pressing plate 305 is provided corresponding to the first through groove 113, the second through groove 114 and the clamping hook 14.

[0052] The operation of pressing the clamping hook 14 through the button 15 is given in the embodiment, and an electric operation mode can also be adopted, which is within the protection scope of the utility model.

[0053] As shown in Figure 10 , Figure 11 , a plurality of upper hinge grooves 401 are penetrated through the outer wall of the fixed hinge ring 4 in a circle, a plurality of lower hinge grooves 501 are penetrated through the outer wall of the sliding hinge ring 5 in a circle, the upper hinge grooves 401 and the lower hinge grooves 501 are provided one by one in correspondence, and the umbrella ribs 8 are hinged between the upper hinge grooves 401 and the lower hinge grooves 501.

[0054] The bottom of the fixed hinge ring 4 is provided with a pulley mounting groove 402, and the pulley 12 is rotatably mounted in the pulley mounting groove 402.

[0055] As shown in Figure 16 、 Figure 17 , the umbrella container 6 comprises a cylindrical containing barrel 601, and the bottom of the cylindrical containing barrel 601 is provided with a cover plate 602.

[0056] The diameter of the umbrella container 6 is 60 mm.

[0057] As shown in Figure 9 , the rib 8 comprises a first upper connecting rod 801 hinged in the upper hinge groove 401 and a first lower connecting rod 804 hinged in the lower hinge groove 501, the first upper connecting rod 801 is hinged with a second upper connecting rod 802, the second upper connecting rod 802 is hinged with a third upper connecting rod 803, the third upper connecting rod 803 is hinged with a cloth connecting rod 806, the cloth 9 is connected with the cloth connecting rod 806, the first lower connecting rod 804 is hinged with a second lower connecting rod 805, the second lower connecting rod 805 is hinged with the cloth connecting rod 806, the first upper connecting rod 801 is hinged in the middle of the first lower connecting rod 804, and the third upper connecting rod 803 is hinged at the end of the first lower connecting rod 804.

[0058] The number of the rib 8 can be adjusted according to needs.

[0059] The radius of the cloth 9 when unfolded is 560 mm.

[0060] As shown in Figure 14 、 15 , the centering slide 10 comprises a centering inner ring 1001 and a centering outer ring 1002, the centering inner ring 1001 and the centering outer ring 1002 are fixed through a plurality of connecting rods 1003, the inner wall of the centering inner ring 1001 is slidably mounted on the second section cylinder 102, the centering outer ring 1002 is attached to the inner wall of the cylindrical containing barrel 601, the side wall of the centering inner ring 1001 is provided with an extension seat 1004, the bottom of the extension seat 1004 is provided with a mounting groove 1005, a stop block 1006 is rotatably mounted in the mounting groove 1005, and the inner wall of the centering inner ring 1001 is provided with a locking pin avoiding groove 1007 corresponding to the position of the stop block 1006.

[0061] The opening process of the utility model is as shown in Figure 18 、 Figure 19 、 Figure 20 .

[0062] Hold the handle 3, the third section cylinder 103 connected with the handle 3 is pulled out, at this time, the locking pin 109 is inserted in the locking pin hole 110 of the second section cylinder 102 side wall, so the locking inner column 106 and the second section cylinder 102 position keep still, and the inner control spring 108 is continuously stretched, presents the state of being pulled, continue to pull out the second section cylinder 102, and then hold the folding umbrella container 6 and pull down, at this time, the rib 8 is not opened temporarily, continue to pull down, the centering slide 10 contacts the locking pin 109, at this time, the force given by the centering slide 10 is not enough to press the locking pin 109 into, continue to pull down until the lower pressing ring 604 contacts the centering slide 10, under the action of the lower pressing ring 604, the centering slide 10 continuously presses the locking pin 109, until the locking pin 109 is pressed into, the locking inner column 106 and the hook cylinder 13 enter the handle 3 under the pulling force of the inner control spring 108, at this time, the lifting rope connected with the hook cylinder 13 pulls the sliding hinged ring 5 to rise, and the opening of the rib 8 is completed.

[0063] The folding process of the utility model is as follows:

[0064] Press the button 15 on the handle 3, the inner pressing plate 305 rotates the clamping hook 14, releases the locking inner column 106 and the hook cylinder 13, the lifting rope connected with the hook cylinder 13 is loosened, the sliding hinged ring 5 slides down under the action of the opening and closing spring 7, the rib 8 and the umbrella cloth 9 can be folded, then the folding umbrella container 6 is pulled up, the rib 8 and the umbrella cloth 9 are stored in the interior, then the second section cylinder 102 and the third section cylinder 103 are pushed in, and the locking is completed by using the locking pin 109.

[0065] The utility model is of integral structure, high integration, more portable, and is more convenient to store in rainy days without additional storage bag.

[0066] The utility model has been described above in conjunction with the drawings, and obviously, the specific implementation of the utility model is not limited by the above mode, as long as various improvements are made by using the method concept and technical scheme of the utility model, or the utility model is directly applied to other occasions without improvement, which is within the protection scope of the utility model.

Claims

1. A one-piece umbrella that is easy to fold and store, characterized in that, The umbrella includes a retractable umbrella column (1), with a cap (2) fixed to the upper part and a handle (3) installed at the lower part. From top to bottom, the retractable umbrella column (1) is provided with a fixed hinge ring (4), a sliding hinge ring (5), and an umbrella container (6). The fixed hinge ring (4) is fixed to the bottom of the cap (2). An opening and closing spring (7) is provided between the fixed hinge ring (4) and the sliding hinge ring (5). Several umbrella ribs (8) are hinged between the outer walls of the fixed hinge ring (4) and the sliding hinge ring (5). All umbrella ribs (8) are connected to the cap (2). The umbrella is provided with a canopy (9) between the umbrellas. The umbrella container (6) is provided with a centering slide (10). The centering slide (10) is slidably installed on the retractable umbrella column (1). The sliding hinge ring (5) is provided with a hook (11). The fixed hinge ring (4) is provided with a pulley (12). The retractable umbrella column (1) is provided with a hook cylinder (13). The hook (11) and the hook cylinder (13) are connected by a hanging rope, which is wound around the pulley (12). The hook cylinder (13) is hinged with a hook (14). The handle (3) is provided with a button (15) to control the rotation of the hook (14).

2. The one-piece umbrella that is easy to fold and store according to claim 1, characterized in that, The retractable umbrella column (1) includes a first column (101), a second column (102), and a third column (103). The first column (101) has a first bottom column (104) at its bottom, and the second column (102) has a second bottom column (105) at its bottom. The retractable umbrella column (1) has a locking inner column (106). A spring retaining ring (107) is located at the upper end of the outer wall of the locking inner column (106). An inner control spring (108) is fixed to the bottom of the spring retaining ring (107). The inner control spring (108) is fitted around the locking inner column (106). The bottom of the spring (108) is fixed to the bottom of the third column (103). The outer wall of the locking inner column (106) is provided with a locking pin (109) above the spring fixing ring (107). The hook cylinder (13) is fixed to the bottom of the locking inner column (106). The upper end of the outer wall of the second column (102) is provided with a locking pin hole (110) corresponding to the locking pin (109). The side wall of the first bottom column (104) is provided with an arc-shaped protrusion (111). The second column (102) is fixed with an intermediate positioning pin (112). The intermediate positioning pin (112) is inserted into the locking inner column (106).

3. The one-piece umbrella that is easy to fold and store according to claim 2, characterized in that, The lower end of the outer wall of the hook cylinder (13) is provided with a first through groove (113), which is correspondingly provided with the hook (14). The lower end of the outer wall of the third column (103) is provided with a second through groove (114), and the top of the locking pin (109) is provided with a downward pressing slope.

4. The one-piece umbrella that is easy to fold and store according to claim 3, characterized in that, The first column (101), the second column (102), and the first base column (104) are all hexagonal structures, while the third column (103) and the second base column (105) are cylindrical structures.

5. The one-piece umbrella that is easy to fold and store according to claim 4, characterized in that, The handle (3) includes a handle housing (301), the lower end of the third column (103) is fixed to the bottom of the handle housing (301), an inner seat (302) is fixed inside the handle housing (301), a press seat (304) is installed on one side of the inner seat (302) by two support springs (303), a button (15) is installed on the outer wall of the press seat (304) and extends out of the handle housing (301), an inner pressure plate (305) is provided on the inner wall of the press seat (304), and the inner pressure plate (305) is correspondingly set with the first through groove (113), the second through groove (114) and the hook (14).

6. The one-piece umbrella that is easy to fold and store according to claim 5, characterized in that, The outer wall of the fixed hinge ring (4) has several upper hinge grooves (401) passing through it, and the outer wall of the sliding hinge ring (5) has several lower hinge grooves (501) passing through it. The upper hinge grooves (401) and lower hinge grooves (501) are set one to one, and the umbrella rib (8) is hinged between the upper hinge grooves (401) and the lower hinge grooves (501).

7. The one-piece umbrella that is easy to fold and store according to claim 6, characterized in that, The bottom of the fixed hinge ring (4) is provided with a pulley mounting groove (402), the pulley (12) is rotatably installed in the pulley mounting groove (402), and the hook (11) is fixed on the top of the sliding hinge ring (5).

8. The one-piece umbrella that is easy to fold and store according to claim 7, characterized in that, The umbrella rib (8) includes a first upper connecting rod (801) hinged in the upper hinge groove (401) and a first lower connecting rod (804) hinged in the lower hinge groove (501). The first upper connecting rod (801) is hinged to a second upper connecting rod (802). The second upper connecting rod (802) is hinged to a third upper connecting rod (803). The third upper connecting rod (803) is hinged to an umbrella fabric connecting rod (806). The umbrella fabric (9) is connected to the umbrella fabric connecting rod (806). The first lower connecting rod (804) is hinged to a second lower connecting rod (805). The second lower connecting rod (805) is hinged to the umbrella fabric connecting rod (806). The first upper connecting rod (801) and the first lower connecting rod (804) are hinged at the middle. The third upper connecting rod (803) and the first lower connecting rod (804) are hinged at the end.

9. The one-piece umbrella that is easy to fold and store according to claim 8, characterized in that, The umbrella container (6) includes a cylindrical receiving cylinder (601), a sealing plate (602) at the bottom of the cylindrical receiving cylinder (601), a conical guide seat (603) at the bottom of the sealing plate (602), and a downward pressure retaining ring (604) at the upper end of the inner wall of the cylindrical receiving cylinder (601).

10. The one-piece umbrella that is easy to fold and store according to claim 9, characterized in that, The centering slide (10) includes a centering inner ring (1001) and a centering outer ring (1002). The centering inner ring (1001) and the centering outer ring (1002) are fixed together by several connecting rods (1003). The inner wall of the centering inner ring (1001) is slidably installed on the second column (102). The centering outer ring (1002) is fitted to the inner wall of the cylindrical receiving cylinder (601). An extension seat (1004) is provided on the side wall of the centering inner ring (1001). An installation groove (1005) is opened at the bottom of the extension seat (1004). A stop block (1006) is rotatably installed in the installation groove (1005). A locking pin clearance groove (1007) is provided on the inner wall of the centering inner ring (1001) at the position corresponding to the stop block (1006).

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