A quick-connect structure between a center column and a base of an outdoor umbrella

Abstract

The present invention discloses a quick-connect structure between a center column and a base of an outdoor umbrella, comprising a center column, a base and a stop pin shaft, wherein the base is provided with a center hole; the center column is inserted and installed in the center hole, and a pin shaft hole is provided in the side wall; and the stop pin shaft can be plugged and pulled out on the base. The present invention provides a pin shaft hole on the center column, fixes the center column in the center hole of the base through a stop pin shaft on the base, and can add a center column centering seat below the center hole, add a guide tube and an anti-sway sleeve in the center column, and the stop pin shaft forms a limit to the stop pin shaft through a spring, thereby increasing the firmness of the center column installation. At the same time, the present invention provides a pin shaft stopper with a spring at the bottom in the front guide seat of the unlocking switch assembly, and a latch pin with a torsion spring is provided in the rear guide seat, which can block the pin shaft when the center column is pulled out, thereby achieving sustainable maintenance of the unlocking state and improving the efficiency of plugging and pulling out the center column.

Description

Technical Field

[0001] The invention relates to the technical field of outdoor umbrellas, and in particular to a quick-connect structure between a center column and a base of an outdoor umbrella. Background Art

[0002] As an outdoor leisure tool, outdoor umbrellas are widely used in leisure places such as squares, beaches, parks and courtyards, providing people with a comfortable leisure and cool space. Outdoor umbrellas can not only effectively block the sun, but also have the function of outdoor commercial advertising with low cost, which is more conducive to its continuous promotion.

[0003] Usually, an outdoor umbrella consists of a foldable umbrella body, a center column and a base, wherein the umbrella body is mounted on the top of the center column, and the bottom of the center column is fixed on the base, wherein the center column is usually square or round. In order to fix the center column on the base, most of the existing outdoor umbrellas are locked on the base by one or more bolts. However, on the one hand, due to the complex outdoor environment, in addition to bearing loads such as wind and rain, the outdoor umbrella also needs to bear its own huge dead weight and variable loads caused by the use and operation process. A gap is easily formed between the center column and the base, resulting in a loose fixation between the center column and the base, resulting in shaking, which poses a safety hazard; and the shaking of the center column is likely to damage the thread of the bolt, and even cause deformation of the connecting structural components, which often makes the center column unable to be disassembled normally; on the other hand, this assembly method is very inconvenient in operation, and the assembly is time-consuming and labor-intensive. When disassembling, it is often necessary to lift the base to loosen the bolts, which is time-consuming and labor-intensive. Summary of the invention

[0004] The object of the present invention is to provide a quick-connect structure between a center column and a base of an outdoor umbrella, so as to improve the efficiency of disassembling and assembling the center column and the firmness of the installation.

[0005] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0006] A quick-connect structure between a center column and a base of an outdoor umbrella comprises: a base provided with a center hole; a center column inserted and installed in the center hole, and a side wall provided with a pin shaft hole; a stop pin shaft which is pluggable and arranged on the base and inserted into the pin shaft hole of the center column to fix the center column.

[0007] Preferably, it also includes a center column centering seat, which is fixed to the lower end of the center hole, fixedly connected to the base, and provided with a boss that matches the center column.

[0008] Preferably, a guide groove or a guide hole is provided on the boss of the center column centering seat. During installation, the guide groove or the guide hole is aligned with the pin shaft hole, and the stop pin shaft is inserted into the guide groove or the guide hole.

[0009] Preferably, a guide tube is provided inside the lower end of the center column, and the guide tube is connected with the pin shaft hole.

[0010] Preferably, a guide tube is provided inside the lower end of the center column, the guide tube is communicated with the pin shaft hole, a center column centering seat is provided at the lower end of the center hole, the center column centering seat is fixedly installed on the base, and is provided with a boss that matches the center column.

[0011] Preferably, a guide groove is provided on the boss of the center column centering seat, and the guide tube is embedded in the guide groove.

[0012] Preferably, the outer sleeve of the center column is provided with an anti-sway sleeve, the outer ring of the anti-sway sleeve is a downward conical surface, which cooperates with the upper end surface of the center hole, and the anti-sway sleeve pressing plate is fixed on the outer tube body of the center column.

[0013] Preferably, a positioning hole is also provided on the side wall of the center hole, and the stop pin shaft is inserted into the positioning hole after passing through the center column.

[0014] Preferably, the stop pin is fixedly mounted on the middle part of the lower end of the base through an unlocking switch assembly, and the unlocking switch assembly includes a switch handle, a rear guide seat, a front guide seat and a pin spring; a switch assembly mounting groove communicating with the middle hole is provided on the lower end surface of the base; the rear guide seat and the front guide seat are fixedly mounted in the switch assembly mounting groove, the switch handle is connected to the stop pin, the stop pin can move through the front guide seat and the rear guide seat, a spring baffle is provided on the stop pin, and the pin spring is sleeved on the stop pin and between the rear guide seat and the spring baffle.

[0015] Preferably, a baffle groove is opened in the front guide seat, and a pin stopper is installed in the baffle groove to block the stop pin, and a stopper spring is installed below the pin stopper. An L-shaped connecting rod is provided at the front end of the pin stopper. When the middle column is installed in the middle hole, the bottom falls on the connecting rod, and the connecting rod is pressed down. The connecting rod drives the pin stopper to move downward, and the stop pin can be inserted into the middle column under the action of the pin spring.

[0016] Preferably, the rear guide seat includes a seat body and a bayonet, and the stop pin includes a rod body and a pin sleeve, the seat body is installed on the base, the pin sleeve is a hollow sleeve, which is installed in the seat body, the rear end is connected and fixed to the switch handle, and the lower end is provided with a notch; the rod end of the rod body is T-shaped and can be slidably inserted into the pin sleeve; one end of the bayonet is hingedly installed on the seat body, below the pin sleeve, and a torsion spring is provided at the hinge, and the other end of the bayonet abuts against the lower end surface of the pin sleeve. When unlocked, the bayonet is inserted into the notch under the action of the torsion spring.

[0017] Preferably, the rear guide seat and the front guide seat are provided with a first switch pressure plate connected to each other.

[0018] Preferably, the center column centering seat is pressed and fixed in the middle position of the base.

[0019] Preferably, an adjusting inner sleeve is provided at the inner bottom of the center column, and the adjusting inner sleeve cooperates with the boss.

[0020] Preferably, the base is also provided with two wheels and a pull rod, and a pull rod groove is opened on the lower end surface of the base; the pull rod groove is perpendicular to the central axis of the two wheels and is distributed on both sides of the central hole; the pull rod is installed in the pull rod groove and is provided with a handle, and the handle is located on the opposite side of the two wheels; the pull rod is limited in the pull rod groove by a pull rod pressure plate.

[0021] The implementation of the present invention obtains the following beneficial effects:

[0022] 1. The present invention provides a pin hole on the middle column, and fixes the middle column in the middle hole of the base through a stop pin on the base, thereby realizing rapid fixation and assembly and disassembly between the middle column and the base;

[0023] 2. By adding a center column centering seat below the center hole, the center column can be quickly centered. At the same time, the contact area between the center column and the base is increased through the coordination of the shape and the center column, thus achieving multi-point positioning and support for the center column.

[0024] 3. By adding an anti-sway sleeve outside the center column, cooperating with the stop pin shaft or the center column centering seat one above and one below, the firmness of the center column installation is further increased, achieving the multiple effects of anti-rotation, anti-longitudinal pull-off and anti-sway.

[0025] 4. By adding a guide tube in the center column, the contact area between the stop pin shaft and the center column is increased, which greatly improves the overall structural strength of the center column. Furthermore, the cooperation between the guide tube and the guide groove opened on the center seat of the center column facilitates installation and positioning, reducing the difficulty of installation.

[0026] 5. The stop pin can be installed on the unlocking switch assembly, and the stop pin is limited by the spring to ensure that the stop pin remains inserted after the middle column is installed. At the same time, the present invention provides a pin stopper with a spring below in the front guide seat of the unlocking switch assembly, and a latch with a torsion spring in the rear guide seat, which can block the pin when the middle column is pulled out, so as to achieve continuous maintenance of the unlocking state and improve the efficiency of plugging and pulling out the middle column. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the structure of a center column and a center seat with a guide groove.

[0029] Figure 3 It is a schematic diagram of the structure of the center column and the center seat with a guide hole.

[0030] Figure 4 This is a schematic diagram of the split center column with guide tube.

[0031] Figure 5 This is a schematic diagram of the disassembled base structure with pulleys and handles.

[0032] Figure 6 It is a disassembled schematic diagram of the unlocking switch assembly of Example 5.

[0033] Figure 7 It is a structural schematic diagram of the unlocking switch assembly of Example 6.

[0034] Figure 8 It is the installation diagram of the center column centering seat and the front guide seat.

[0035] Fig. 9 It is a cross-sectional schematic diagram of the rear guide seat and the pin shaft.

[0036] Fig.10 It is a partial cross-sectional schematic diagram in the unlocked state.

[0037] Fig.11 It is a partial cross-sectional schematic diagram of the switch handle pushed in after the center column is pulled out.

[0038] Fig.12 It is a schematic diagram of the split structure of the center column and the center seat.

[0039] Fig.13 It is a schematic diagram of the boss structure of the center column of the split structure.

[0040] In the figure, 1 is a middle column, 2 is a base, 3 is a stop pin, 4 is a pull rod, 5 is a middle column centering seat, 6 is an unlocking switch assembly, 11 is a pin hole, 12 is a guide tube, 13 is an adjustment inner sleeve, 14 is an anti-sway sleeve, 15 is a pressure piece, 21 is a middle hole, 22 is a pull rod groove, 23 is a wheel, 24 is a switch assembly mounting groove, 31 is a rod body, 32 is a pin sliding sleeve, 33 is a notch, 41 is a pull handle, 42 is a pull rod pressure plate, 51 is a bottom plate, 52 is a boss, 53 is a guide groove, 54 is a guide hole, 55 is a second switch pressure plate, 56 is a sleeve, 61 is a switch handle, 62 is a rear guide seat, 63 is a front guide seat, 64 is a pin spring, 65 is a spring baffle, 66 is a first switch pressure plate, 621 is a seat body, 622 is a bayonet, 631 is a baffle groove, 632 is a pin block, 633 is a block spring, and 634 is a connecting rod. DETAILED DESCRIPTION

[0041] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but the embodiments of the present invention are not limited thereto.

[0042] Figures 1 to 13It is a preferred solution of the present invention, comprising a center column 1 and a base 2. The center column 1 may be covered with a steel pipe, the base 2 is provided with a center hole 21, the center column 1 is inserted and installed in the center hole 21, and the side wall is provided with a pin hole 11. The base 2 is provided with a pluggable stop pin 3, which is inserted into the pin hole 11 of the center column 1 to fix the center column 1.

[0043] The base 2 can be designed as a pull rod wheel base for easy transportation. Figure 5 As shown, the base 2 is provided with wheels 23 and a pull rod 4. The lower end surface of the base 2 is provided with a pull rod groove 22. The pull rod groove 22 is two parallel grooves, which are perpendicular to the central axis of the two wheels 23 and are distributed on both sides of the central hole 21. The pull rod 4 is installed in the pull rod groove 22, and the handle 41 is set on the opposite side of the two wheels 23. After the pull rod 4 is pulled out of the pull rod groove 22, the base can be moved. The pull rod 4 is limited in the pull rod groove 22 by a pull rod pressure plate 42, and the pull rod pressure plate 42 is screwed and fixed on the base 2 at the opening of the pull rod groove 22 (i.e., the end of the handle 41 pulled outward).

[0044] like Figure 1 As shown, a center column centering seat 5 is also provided at the lower end of the base 2. The center column centering seat 5 is fixed at the lower end of the center hole 21, and is provided with a bottom plate 51 fixedly connected to the base 2, and is provided with a boss 52 that matches the center column 1.

[0045] Embodiment 1:

[0046] like Figure 2 As shown, a guide groove 53 is provided on the boss 52 . During installation, the guide groove 53 is aligned with the pin shaft hole 11 . The stop pin shaft 3 is inserted into the guide groove 53 through the pin shaft hole 11 to fix the center column 1 .

[0047] Embodiment 2:

[0048] like Figure 3 As shown, a guide hole 54 is formed on the boss 52. During installation, the guide hole 54 is aligned with the pin shaft hole 11. The stop pin shaft 3 is inserted into the guide hole 54 through the pin shaft hole 11 to fix the center column 1.

[0049] Embodiment 3:

[0050] like Figure 4 As shown, a guide tube 12 is provided inside the lower end of the center column 1, and the guide tube 12 is connected with the pin shaft hole 11. The boss 52 is located below the guide tube 12, and the stop pin shaft 3 is inserted into the guide tube 12 through the pin shaft hole 11 during installation to fix the center column 1.

[0051] Embodiment 4:

[0052] A guide groove 53 is provided on the boss 52, and a guide tube 12 is provided inside the lower end of the center column 1. The guide tube 12 is embedded in the guide groove 53 and connected with the pin shaft hole 11. After the center column 1 is inserted into the center hole 21, the guide tube 12 can be rotated to fall into the guide groove 53, and can be quickly positioned. A clamp or a snap ring can also be provided on the boss 52, and the guide tube 12 is inserted into the clamp or snap ring to be limited.

[0053] Further, such as Figure 4 As shown, in the above-mentioned embodiments 1 to 4, an adjustable inner sleeve 13 can be provided at the inner bottom of the middle column 1, and the adjustable inner sleeve 13 cooperates with the middle column centering seat 5, so that the middle column 1 can be fixed and centered; by replacing the adjustable inner sleeve 13 of different sizes, the base 2 can meet the needs of middle columns 1 with different outer diameters. At the same time, an anti-sway sleeve 14 can be sleeved on the outer side of the middle part of the middle column 1 near the lower end, and after the middle column 1 is inserted into the middle hole 21, the anti-sway sleeve 14 is clamped on the upper end surface of the middle hole 21; the outer ring of the anti-sway sleeve 14 is designed to be a downward conical surface, and the upper edge of the middle hole 21 is also correspondingly provided with a matching conical surface, so that the anti-sway sleeve 14 and the middle hole 21 of the base 2 fit more closely and reduce shaking. The anti-sway sleeve 14 is preferably made of a material with micro-deformation, which can increase the tightness of the fit; by replacing the anti-sway sleeve 14 with different inner hole sizes, the same base 2 can meet the needs of middle columns 1 with different outer diameters. An anti-sway sleeve pressing piece 15 is welded and fixed on the outer tube body of the center column 1. When the center column 1 is connected to the base 2, the anti-sway sleeve 14 is pressed by the pressing piece 15 to make the gap between the center column 1 and the center hole 21 of the base 2 as small as possible, which can effectively reduce shaking.

[0054] The upper end of the center column 1 cooperates with the upper end surface of the base 2 through the downward conical surface of the anti-sway sleeve 14, and the lower end is centered and fixed by the center column centering seat 5, so that the center column 1 is more stable in the base 2 and reduces shaking.

[0055] Furthermore, in the above-mentioned embodiments 1 to 4, a positioning hole (not shown in the figure) can be opened on the side wall of the center hole 21. After the center column 1 is inserted, the positioning hole is communicated with the pin shaft hole 11, and the stop pin shaft 3 passes through the center column 1 and is inserted into the positioning hole. The positioning hole can be used to further enhance the overall stability and strength.

[0056] Embodiment 5:

[0057] The lower middle part of the base 2 is also provided with an unlocking switch assembly 6. Figure 6As shown, the unlocking switch assembly 6 includes a switch handle 61, a rear guide seat 62, a front guide seat 63 and a pin spring 64. A switch assembly mounting groove 24 is provided on the lower end surface of the base 2, and the rear guide seat 62 and the front guide seat 63 are fixedly installed in the switch assembly mounting groove 24. To avoid interference between the unlocking switch assembly 6 and the pull rod 4, the switch assembly mounting groove 24 is parallelly provided in the middle of the two pull rod grooves 22 and communicates with the middle hole 21. The switch handle 61 is connected to the stop pin 3, and the stop pin 3 can move through the front guide seat 63 and the rear guide seat 62. A spring stopper 65 is provided on the stop pin 3. The pin spring 64 is sleeved on the stop pin 3 and limitedly compressed between the rear guide seat 62 and the spring stopper 65. Pull the switch handle 61 backward, the stop pin 3 moves backward, and the pin spring 64 is compressed. Release the switch handle 61, and the pin spring 64 is reset, driving the stop pin 3 forward.

[0058] When installing the pipe, first pull out the stop pin 3, insert the middle column 1 into the middle hole 21, rotate the middle column 1 so that the pin hole 11 is aligned with the stop pin 3, and then release the switch handle 61. The stop pin 3 is inserted into the pin hole 11 under the action of the pin spring 64, and the quick installation and locking of the middle column 1 is completed. Similarly, pull the switch handle 61 outward to disengage the stop pin 3 from the pin hole 11, and the middle column 1 is unlocked and can be pulled out.

[0059] Embodiment 6:

[0060] The front guide seat 63 of the unlocking switch assembly 6 can be installed on the bottom plate 51, so that the center column centering seat 5 and the unlocking switch assembly 6 form a whole. Figure 7 , 8 As shown, in order to prevent the stop pin 3 from rebounding immediately after being pulled out, a baffle groove 631 is provided in the front guide seat 63, a pin stopper 632 is installed in the baffle groove 631, a stopper spring 633 is installed below the pin stopper 632, and an L-shaped connecting rod 634 is provided at the front end of the pin stopper 632. When the middle column 1 is inserted into the middle hole 21, the bottom of the middle column 1 falls on the connecting rod 634, and when the guide tube 12 is aligned with the guide groove 53 and continues to move downward, the bottom of the middle column 1 will press the connecting rod 634 downward, drive the pin stopper 632 to move downward, the stopper spring 633 is compressed, and the stop pin 3 is unobstructed in front, and can be inserted into the middle column 1 under the action of the pin spring 64, that is, the fixing of the middle column 1 is completed. Anyway, when the stop pin 3 is pulled out, the stopper spring 633 lifts the pin stopper 632, driving the connecting rod 634 to lift the center column 1, so that the center column 1 can be separated from the center column centering seat 5 and can be pulled out more easily.

[0061] Furthermore, when the unlocking switch assembly 6 is in the unlocking state, that is, the stop pin 3 is in the pulled-out state, if the center column 1 is not pulled out, the stop block spring 633 cannot immediately lift the pin block 632, and the connection mode between the stop pin 3 and the rear guide seat 62 can be changed, such as Fig. 9 , 10As shown, the rear guide seat 62 includes a seat body 621 and a bayonet 622, and the stop pin shaft 3 includes a rod body 31 and a pin shaft sliding sleeve 32. The seat body 621 is installed on the base 2, and the pin shaft sliding sleeve 32 is a hollow sleeve installed in the seat body 621. The rear end is connected and fixed to the switch handle 61, and a notch 33 is provided at the lower end. The rod end of the rod body 31 is T-shaped and can be slidably inserted into the pin shaft sliding sleeve 32. The bayonet 622 clamps the stop pin shaft 3 through the notch 33; the pin shaft sliding sleeve 32 can drive the stop pin shaft 3 to slide together in the seat body 621, and the stop pin shaft 3 can also slide back and forth independently in the pin shaft sliding sleeve 32. One end of the bayonet pin 622 is hingedly mounted on the seat body 621, and a torsion spring (not shown in the figure) is provided at the hinge below the pin shaft sleeve 32. The torsion spring makes the bayonet pin 622 always have an upward movement tendency, and the other end of the bayonet pin 622 abuts against the lower end surface of the pin shaft sleeve 32. When the pin shaft sleeve 32 drives the stop pin shaft 3 to move backward, the bayonet pin 622 is inserted into the slot 33 under the action of the torsion spring, and the stop pin shaft 3 is clamped when unlocking, preventing the stop pin shaft 3 from entering the guide tube 12. At this time, the switch handle 61 can be released.

[0062] After the center column 1 is pulled out from the center hole 21, the unlocking switch can be pushed back. When the switch handle 61 drives the pin shaft sliding sleeve 32 to be pushed back, the latch pin 622 moves downward and disengages from the notch 33. Since the pin shaft stopper 632 has risen at this time, the stop pin shaft 3 is blocked by the pin shaft stopper 632 and still cannot enter the center hole 21 of the base 2. Fig.11 When installing the pipe, it is only necessary to insert the center column 1 into the center hole 21, and the center column 1 presses down the connecting rod 634 to drive the pin stopper 632 to move downward, and the stop pin 3 can enter the guide tube 12 of the center column 1.

[0063] Furthermore, a first switch pressure plate 66 is provided on the rear guide seat 62 and the front guide seat 63, which is locked by screws so that the head and tail of the unlocking switch are kept in the same working plane; a second switch pressure plate 55 is provided on the bottom plate 51 of the center column centering seat 5, which is connected to the base 2 by screws, so that the center column centering seat 5 is pressed and fixed in the middle position of the base 2.

[0064] Furthermore, an installation position marking line may be set on the center column 1 or the base 2, or a mutually cooperating block or slot guide structure may be set to achieve positioning installation while further enhancing the stability of the structural connection.

[0065] Furthermore, the bottom plate 51 and the boss 52 of the center column centering seat 5 are divided into two independent parts, such as Fig.12 , 13As shown, the bottom plate 51 is installed on the lower end surface of the base, the boss 52 is installed on the inner bottom of a sleeve 56, the sleeve 56 is placed in the middle hole 21 of the base, the sleeve 56 can be designed as a frame type, and the bottom is locked on the bottom plate 51 by screws. The upper end surface of the sleeve 56 is provided with a conical surface, the anti-sway sleeve 14 is installed in cooperation with the sleeve 56, and there is no need to set a conical surface at the upper end of the middle hole 21; a guide hole 54 is provided on the side of the sleeve 56, the middle column 1 is installed in the sleeve 56, and the bottom is matched with the boss 52. A guide groove 53 can be provided on the upper end of the boss 52 to cooperate with the guide tube 12 of the middle column 1. After the boss 52 is installed in the middle hole 21, the guide groove 53 and the guide hole 54 are on the same axis as the stop pin shaft 3.

[0066] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the present invention.

Claims

1. A quick-connect structure between a column and a base of an outdoor umbrella, characterized in that: include: A base having a central hole; A center column is inserted and installed in the center hole, and a pin hole is opened on the side wall; A stop pin shaft is pluggable and arranged on the base, and is inserted into the pin shaft hole of the middle column to fix the middle column; A guide tube is provided inside the lower end of the center column, the guide tube is connected with the pin shaft hole, a center column centering seat is provided at the lower end of the center hole, the center column centering seat is fixedly mounted on the base, and is provided with a boss matched with the center column; a guide groove is provided on the boss of the center column centering seat, and the guide tube is embedded in the guide groove; The stop pin is fixedly mounted on the lower end of the base through an unlocking switch assembly, the unlocking switch assembly comprises a switch handle, a rear guide seat, a front guide seat and a pin spring; a switch assembly mounting groove communicating with the middle hole is provided on the lower end surface of the base; the rear guide seat and the front guide seat are fixedly mounted in the switch assembly mounting groove, the switch handle is connected to the stop pin, the stop pin can movably pass through the front guide seat and the rear guide seat, a spring stopper is provided on the stop pin, and the pin spring is sleeved on the stop pin and between the rear guide seat and the spring stopper; The front guide seat is provided with a baffle groove, a pin stopper is installed in the baffle groove to block the stop pin, a stopper spring is installed below the pin stopper, an L-shaped connecting rod is provided at the front end of the pin stopper, when the center column is installed in the center hole, the bottom falls on the connecting rod, the connecting rod is pressed down, the connecting rod drives the pin stopper to move down, and the stop pin can be inserted into the center column under the action of the pin spring; The rear guide seat includes a seat body and a bayonet, and the stop pin shaft includes a rod body and a pin shaft sliding sleeve. The seat body is installed on the base, and the pin shaft sliding sleeve is a hollow sleeve installed in the seat body. The rear end is connected and fixed to the switch handle, and a notch is provided at the lower end; the rod end of the rod body is T-shaped and can be slidably inserted into the pin shaft sliding sleeve; one end of the bayonet is hingedly installed on the seat body and below the pin shaft sliding sleeve, and a torsion spring is provided at the hinge, and the other end of the bayonet pin abuts against the lower end surface of the pin shaft sliding sleeve. When unlocked, the bayonet pin is inserted into the notch under the action of the torsion spring.

2. The quick-connect structure between the center column and the base of an outdoor umbrella according to claim 1, characterized in that: The outer sleeve of the center column is provided with an anti-sway sleeve, the outer ring of which is a downward conical surface, which matches with the upper end surface of the center hole, and the anti-sway sleeve pressing plate is fixed outside the tube body of the center column.

3. The quick-connect structure between the center column and the base of an outdoor umbrella according to claim 1, characterized in that: The side wall of the center hole is also provided with a positioning hole, and the stop pin shaft passes through the center column and is inserted into the positioning hole.

4. The quick-connect structure between the center column and the base of an outdoor umbrella according to claim 1, characterized in that: The rear guide seat and the front guide seat are provided with a first switch pressing plate which is connected to each other.

5. The quick-connect structure between the center column and the base of an outdoor umbrella according to claim 1, characterized in that: A second switch pressing plate is provided on the bottom plate of the center column centering seat and is connected to the base through screws to press and fix the center column centering seat in the middle position of the base.

6. The quick-connect structure between the center column and the base of an outdoor umbrella according to claim 1, characterized in that: An adjusting inner sleeve is provided at the inner bottom of the center column, and the adjusting inner sleeve cooperates with the boss.

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