A parasol with handle-operated left and right angle adjustment

Abstract

A handle-operated parasol capable of adjusting the left and right angles includes an umbrella cover adjustment mechanism and a crossbar rotation mechanism. The crossbar rotation mechanism is disposed in the middle of the crossbar, the front end of the diagonal rod is rotationally connected to the crossbar rotation mechanism, and the lower end of the crossbar is rotationally connected to a slider via the umbrella cover adjustment mechanism. The umbrella cover adjustment mechanism includes a crossbar joint, an upper clutch tooth, a lower clutch tooth, and a handle. The upper clutch tooth is fixedly connected to the crossbar, the lower end of the crossbar joint is rotationally connected to the slider, the upper end of the crossbar joint passes through the lower clutch tooth and is rotationally connected to the upper clutch tooth. The lower clutch tooth can move axially within a limited range along the crossbar joint. The handle is rotationally disposed outside the upper clutch tooth and abuts against the upper end of the lower clutch tooth. When the handle is rotated downward, the lower clutch tooth moves downward and disengages from the upper clutch tooth. Rotating the handle left and right can rotate the crossbar to adjust the umbrella cover left and right. The present invention has a simple and reasonable structure, is easy to operate, and has stable and reliable positioning. The umbrella cover sunshade angle can be adjusted simply by operating the handle, and has strong practical performance.

Description

Technical Field

[0001] The present invention relates to the technical field of outdoor parasols, in particular to a parasol capable of rotating left and right. Background Art

[0002] As an outdoor leisure tool, parasols are widely used in places like squares, beaches, parks, and courtyards, providing a comfortable space for people to cool down. Currently, parasols with fixed canopies are not adjustable. However, if the canopy angle could be adjusted to reflect changes in wind direction and the tilt of sunlight, better sun and wind protection could be achieved. To meet this demand, a number of parasols with adjustable canopies have emerged.

[0003] Upon investigation, the existing Chinese patent number CN201220168486.6, "A Parasol Canopy Adjustment Mechanism," includes a housing that is placed on the parasol's curved arm and connected to the parasol's upright post and large curved arm. The upper end of the upright post is connected to the lower end of the large curved arm through the housing. The patent is characterized in that: a groove is provided on the mating surface of the large curved arm along its length, and a synchronous belt is arranged in the groove. A latch assembly is provided at the inner middle position of the curved arm for engagement with the teeth on the synchronous belt. One end of the latch assembly is connected to the handle via a steel wire rope, and the handle drives the latch assembly to disengage from the synchronous belt, thereby achieving adjustment of the curved arm. This adjustment method, which adjusts the umbrella canopy by adjusting the curved arm, is relatively complex in structure, cumbersome to manufacture, costly, and inconvenient to operate.

[0004] There is also a Chinese patent with patent number CN201320541314.3, "A parasol with adjustable sunshade angle left and right", which includes an umbrella base, a column, a cross bar, an oblique bar and an umbrella frame. The lower end of the cross bar is placed on the column, the upper end of the cross bar is connected to the top of the umbrella frame, the rear end of the oblique bar is installed on the top of the column, and the front end of the oblique bar is connected to the middle of the cross bar. The column is inserted into the umbrella base, and is characterized in that: the top of the umbrella frame is rotatably connected to the upper end of the cross bar through a rotating mechanism; a sliding seat is provided on the column, and the lower end of the cross bar is connected to the sliding seat through the lower joint of the cross bar, and an umbrella cover adjustment mechanism is provided between the lower joint of the cross bar and the cross bar, and an extended umbrella rib is provided on the umbrella frame, and the lower end of the extended umbrella rib is connected to the umbrella cover adjustment mechanism. This parasol drives the rotation of the umbrella frame by rotating the clutch gear sleeve, and can adjust the sunshade angle left and right steplessly. However, its clutch gear sleeve is only set at the lower end of the extended umbrella rib, the structure is not stable enough, the handle is a sleeve, and it is not convenient to use. The structure needs further improvement. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a parasol with a compact and reasonable structure and a handle for adjusting the left and right angles in response to the above technical status quo, which can realize the left and right adjustment of the umbrella surface angle and is simple and convenient to operate.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a parasol with a handle-operated left and right angle adjustment, comprising a column, a cross bar, an inclined bar and an umbrella frame; a slider is sleeved on the column, the lower end of the cross bar is connected to the slider, the upper end of the cross bar is connected to the top of the umbrella frame, the rear end of the inclined bar is installed on the top of the column, the front end of the inclined bar is connected to the middle part of the cross bar, and the top of the umbrella frame is rotatably connected to the upper end of the cross bar. It is characterized in that: the parasol also includes an umbrella surface adjustment mechanism that can control the left and right rotation of the umbrella surface and a cross bar rotation mechanism that can rotate the cross bar when the inclined bar is stationary. The cross bar rotation mechanism is arranged in the middle of the cross bar, and the inclined bar The front end is rotatably connected to the cross bar rotation mechanism, and the lower end of the cross bar is rotatably connected to the slider through the umbrella cover adjustment mechanism. The umbrella cover adjustment mechanism includes a cross bar joint, an upper clutch tooth, a lower clutch tooth and a handle. The upper clutch tooth is fixedly connected to the cross bar, and the upper end of the cross bar joint passes through the lower clutch tooth and is rotatably connected to the upper clutch tooth. The lower clutch tooth can be axially limited and moved along the cross bar joint, meshing with or disengaging from the upper clutch tooth. One end of the handle is rotatably arranged outside the upper clutch tooth and abuts against the upper end surface of the lower clutch tooth. When the handle is turned downward, the lower clutch tooth moves downward under the action of the handle and disengages from the upper clutch tooth. By turning the handle left and right, the cross bar can be rotated to adjust the umbrella cover left and right.

[0007] As an improvement, the upper clutch tooth is a sleeve structure with an opening at the upper end, and the lower clutch tooth is a sleeve structure with an opening at the lower end, and the lower end face of the upper clutch tooth and the middle part of the upper end face of the lower clutch tooth are respectively provided with a square through hole and a circular through hole for the cross bar joint to pass through; the lower end face of the upper clutch tooth is formed with a circle of convex teeth around the outside of the circular through hole, and the upper end face of the lower clutch tooth is recessed with a circle of ring teeth engaged with the convex teeth around the outside of the square through hole, and the upper end of the cross bar joint passes through the square through hole of the lower clutch tooth and the circular through hole of the upper clutch tooth in turn, and is fixed at the upper end by a nut, and a spring is supported between the inner wall of the lower clutch tooth and the lower part of the cross bar joint, so that the lower clutch tooth has a tendency to always move upward and engage and lock with the upper clutch tooth.

[0008] As a further improvement, the cross bar joint is divided into 5 sections from bottom to top along the length direction, wherein the first section as the tail is a connecting section connected to the slider, the second section is a cylindrical section matching the inner hole of the lower clutch tooth, the third section in the middle position is a square column section matching the square through hole of the lower clutch tooth, the fourth section is a reduced diameter cylindrical section matching the circular through hole of the upper clutch tooth, and the fifth section at the top is an external threaded section matching the nut. The spring is sleeved on the third square column section of the cross bar joint, one end of the spring is abutted against the inner side of the square through hole of the lower clutch tooth, and the other end is abutted against the step surface of the second cylindrical section of the lower clutch tooth for support.

[0009] Furthermore, the upper and lower ends of the circular through hole of the upper clutch tooth are provided with fixed grooves for the bearing to be embedded. The upper end of the cross bar joint passes through the spring and the upper clutch tooth and is placed on the inner side of the bearing. The third square column section of the cross bar joint is restrained against the bearing at the lower end of the upper clutch tooth, and the fourth section of the cross bar joint is tightly fitted with the bearing.

[0010] Furthermore, a movable groove for the upper end of the handle to be placed is provided on the lower side of the lower end surface of the upper clutch tooth. The upper end of the handle is U-shaped and has a cam surface. A through hole is provided laterally at the upper end of the handle, and corresponding rotating holes are provided on both sides of the movable groove. A torsion spring that cooperates with the handle is also provided between the upper end of the handle and the movable groove. The handle and the torsion spring are fixed to the upper clutch tooth by passing a screw through the rotating hole, the through hole of the handle, and the center hole of the torsion spring.

[0011] Furthermore, a washer is embedded on the upper end surface of the lower clutch tooth and is in sliding contact with the upper end of the handle.

[0012] Furthermore, the upper end of the upper clutch tooth is sleeved with a clutch tooth cover, the cross bar is a hollow square tube, the clutch tooth cover is provided with a square through hole for the cross bar to pass through, the lower end of the cross bar is provided with a connecting hole, the upper end of the upper clutch tooth is provided with a corresponding cross bar fixing hole, and the clutch tooth cover is provided with a corresponding through hole, and the two are fixed to the upper clutch tooth by screws.

[0013] Furthermore, the crossbar rotation mechanism includes left and right turn bushings and an oblique rod connecting piece. The left and right turn bushings are semicircular clamping structures. The left and right turn bushings are matched to form a square hole that matches the crossbar. A through mounting hole is opened in the middle of the crossbar, and corresponding through holes are opened in the middle of the left and right turn bushings. The left and right turn bushings are matched and clamped on the left and right sides of the middle of the crossbar and fixed by screws and nuts. The oblique rod connecting piece can be rotatably placed on the outside of the left and right turn bushings. The lower end of the oblique rod connecting piece is a circle structure that matches the left and right turn bushings, and the upper end of the oblique rod connecting piece is rotatably connected to the lower end of the oblique rod.

[0014] Furthermore, the left and right turning bushings are divided into two groups, which are respectively located on the upper and lower sides of the circular structure of the oblique block connecting block. The outer end surface of each group of left and right turning bushings is formed with a convex ring that is restrained and limited by the two sides of the circular structure of the oblique block connecting block. The outer peripheral surface of the left and right turning bushings is circumferentially formed with a concave and convex texture to increase friction.

[0015] Finally, a marking line is provided on the outer periphery of the lower end of the upper clutch tooth, and a scale line is provided on the outer periphery of the upper end of the lower clutch tooth to cooperate with the marking line to facilitate observation of the left and right rotation angles.

[0016] Compared with the prior art, the advantages of the present invention are: an umbrella canopy adjustment mechanism and a crossbar rotation mechanism are provided. The crossbar rotation mechanism can rotate the crossbar while the diagonal rod remains stationary. The umbrella canopy adjustment mechanism includes a crossbar joint, an upper clutch tooth, a lower clutch tooth, and a handle. By turning the handle downward, the upper and lower clutch teeth are disengaged, allowing the crossbar to rotate left and right, thereby achieving left and right adjustment of the umbrella canopy. The present invention has a simple and reasonable structure, is easy to operate, and has stable and reliable positioning. The umbrella canopy sunshade angle can be adjusted simply by operating the handle, making the operation more simple and convenient, and having strong practical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a parasol installed with an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A partial enlarged view of the mid-area umbrella adjustment mechanism;

[0019] Figure 3 for Figure 2 Exploded view of

[0020] Figure 4 for Figure 2 A schematic structural diagram of the upper end surface of the lower clutch tooth;

[0021] Figure 5 for Figure 2 A schematic structural diagram of the lower end surface of the upper clutch tooth;

[0022] Figure 6 It is a structural diagram of the handle;

[0023] Figure 7 for Figure 2 A longitudinal cross-sectional view of

[0024] Figure 8 This is a cross-sectional view of the structure when the handle is turned downward to disengage the lower clutch teeth from the upper clutch teeth;

[0025] Figure 9 for Figure 7 Exploded view of

[0026] Figure 10 for Figure 1 A partial enlarged view of the crossbar rotation mechanism;

[0027] Figure 11 for Figure 10 Exploded diagram of . DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0029] like Figures 1 to 11As shown, a handle-operated parasol with left and right angle adjustment includes a column 100, a crossbar 20, a diagonal rod 300, an umbrella frame 400, a slider 200, an umbrella cover adjustment mechanism A, and a crossbar rotation mechanism B. The column 100 is a special-shaped tube, such as an elliptical cross-section tube. The slider 200 is mounted on the column 100 and can slide up and down along the column 100. The lower end of the crossbar 20 is connected to the slider 200 via the umbrella cover adjustment mechanism A. The umbrella cover adjustment mechanism A can rotate up and down within the fixing hole of the slider 200. The umbrella frame 400 is located above the upper end of the crossbar 20. The crossbar rotation mechanism B is located in the middle of the crossbar 20. The rear end of the diagonal rod 200 is rotatably mounted on the top of the column 100, and the front end of the diagonal rod 300 is rotatably connected to the crossbar rotation mechanism B.

[0030] The umbrella cover adjustment mechanism A includes a cross bar joint 1, an upper clutch tooth 8, a lower clutch tooth 3, a clutch tooth cover 15 and a handle 12. The upper clutch tooth 3 is fixedly connected to the cross bar 20. The lower end of the cross bar joint 1 is rotatably connected to the slider 200. The upper end of the cross bar joint 1 passes through the lower clutch tooth 3 and is engaged and rotatably connected with the upper clutch tooth 8. The lower clutch tooth 3 can be axially limited and moved along the cross bar joint 1 to engage or disengage with the upper clutch tooth 8. One end of the handle 12 is rotatably set outside the upper clutch tooth 8 and abuts against the upper end surface of the lower clutch tooth 3. Using its cam surface 12d, when the handle 12 is rotated downward, the lower clutch tooth 3 moves downward under the action of the handle 12 and disengages from the upper clutch tooth 8. By rotating the handle 12 left and right, the cross bar 20 can be rotated to adjust the umbrella cover left and right.

[0031] The specific structure is as follows: the upper clutch tooth 8 is a sleeve structure with an upper opening, and the lower clutch tooth 3 is a sleeve structure with a lower opening. The lower end surface of the upper clutch tooth 8 and the middle portion of the upper end surface of the lower clutch tooth 3 are respectively provided with a square through-hole and a circular through-hole for the crossbar joint 1 to pass through. The lower end surface of the upper clutch tooth 8 is formed with a circle of protruding teeth 81 around the outer side of the circular through-hole, and the upper end surface of the lower clutch tooth 3 is recessed with a circle of annular teeth 31 around the outer side of the square through-hole to engage with the protruding teeth. The upper end of the crossbar joint 1 passes through the square through-hole 3a of the lower clutch tooth 3 and the circular through-hole of the upper clutch tooth 8 in sequence, and is secured at the upper end by a nut 14. A spring 2 is supported between the inner wall of the lower clutch tooth 3 and the lower portion of the crossbar joint 1, so that the lower clutch tooth 3 has a tendency to always move upward to engage and lock with the upper clutch tooth 8. The cross bar joint 1 is divided into 5 sections from bottom to top along the length direction, among which the first section 1d as the tail is a connecting section connected to the slider 200, the second section 1e is a cylindrical section matching the inner hole 3b of the lower clutch tooth 3, the third section 1a in the middle position is a square column section matching the square through hole 3a of the lower clutch tooth 3, the fourth section 1b is a reduced diameter cylindrical section matching the circular through hole of the upper clutch tooth 8, and the uppermost fifth section 1c is an external threaded section matching the nut 4. The spring 2 is located in the inner hole 3b of the lower clutch tooth 3 and is sleeved on the square column section of the third section 1a of the cross bar joint 1. One end of the spring 2 is abutted against the inner side of the square through hole of the lower clutch tooth 3, and the other end is abutted against the step surface of the second section 1e cylindrical section of the lower clutch tooth 3. In this way, the lower clutch tooth 3 can only move axially along the cross bar joint 1 on the cross bar joint 1 and cannot rotate. The upper and lower ends of the circular through hole of the upper clutch tooth 8 are provided with fixed grooves 8a for the bearing 6 to be embedded. The upper end of the crossbar joint 1 passes through the spring 2 and the upper clutch tooth 8 and is placed on the inner side of the bearing 6. The square column section of the third section 1a of the crossbar joint 1 is abutted against the bearing 6 at the lower end of the upper clutch tooth 8, and the fourth section 1b of the crossbar joint 1 is tightly fitted with the bearing 6. The lower side of the lower end surface of the upper clutch tooth 8 is provided with a movable groove 8b for the upper end of the handle 12 to be placed and a positioning notch 8c for the prong 9b of the torsion spring 9 to be inserted. The upper end of the handle 12 is provided with a U-shaped rotation groove 12a for the torsion spring 9 to rotate and a positioning notch 12c at the end of the prong 9a of the torsion spring 9, and is provided with a cam surface 12d. A through hole 12b is provided in the upper end of the handle 12, and corresponding rotation holes 8d are provided on both sides of the movable groove 8b. The torsion spring 9 is placed in the rotation groove 12a of the handle 12, and the prong 9a of the torsion spring 9 is inserted. The end is placed in the positioning notch 12c of the handle 12, the handle torsion spring assembly is placed in the movable groove 8b of the upper clutch tooth 8, and the fork leg 9b end of the torsion spring 9 is placed in the positioning notch 8c of the upper clutch tooth 8, and the screw 5 is passed through the rotating hole 8d, the through hole 12b of the handle 12, and the center hole 9d of the torsion spring 9 to fix the handle 12 and the torsion spring 9 on the upper clutch tooth 8. The fork leg 9a and the fork leg 9b of the torsion spring 9 form an acute angle. When the handle 12 is rotated, the torsion spring 9 has a tendency to return, so that the handle 12 can return to its initial position.

[0032] A washer 4 is also embedded on the upper end surface of the lower clutch tooth 3 and is in sliding contact with the upper end of the handle 12; a groove 3c is provided on the upper end surface of the lower clutch tooth 3 for the washer to be placed in, and a connecting hole 4a is provided in an annular shape on the washer 4, and a corresponding internal threaded hole 7a is provided in the groove 3c. The washer 4 is fixed in the groove 3c of the lower clutch tooth 3 by passing a screw 7 through the connecting hole 4a on the washer 4.

[0033] A marking line 82 is provided on the outer periphery of the lower end of the upper clutch tooth 8, and a scale line 32 is provided on the outer periphery of the upper end of the lower clutch tooth 3 to cooperate with the marking line for easy observation of the left and right rotation angles.

[0034] The clutch tooth cover 15 is sleeved on the upper end of the upper clutch tooth 8. The cross bar 20 is a hollow square tube. The clutch tooth cover 8 is provided with a square through hole for the cross bar 20 to pass through. The lower end of the cross bar 20 is provided with a connecting hole 201. The upper end of the upper clutch tooth 8 is provided with a corresponding cross bar fixing hole 801. The clutch tooth cover 15 is provided with a corresponding through hole, and the two are fixed to the upper clutch tooth 8 by screws 13.

[0035] The cross bar rotation mechanism B includes left and right turning bushings 50 and 51 and an oblique rod connecting piece 70. The left and right turning bushings 50 and 51 are semicircular jacket structures. When the left and right turning bushings 50 and 51 are matched, a square hole is formed to match the cross bar 20. A through mounting hole 202 is provided in the middle of the cross bar 20. Corresponding through holes 50a and 51a are provided in the middle of the left and right turning bushings 50 and 51. The left and right turning bushings 50 and 51 are matched and clamped on the left and right sides of the middle of the cross bar 20 and are fixed by screws 80 and nuts 90. The oblique rod connecting piece 70 is rotatably mounted on the outside of the left and right turning bushings 50 and 51. The lower end of the oblique rod connecting piece 70 is a circle structure that matches the left and right turning bushings 50 and 51. The upper end of the oblique rod connecting piece 70 is rotatably connected to the lower end of the oblique rod 200. The left and right turning bushings 50 and 51 are divided into two groups, one above the other, which are respectively located on the upper and lower sides of the circular structure of the oblique block connecting block 70. The outer end faces of each group of left and right turning bushings 50 and 51 are formed with convex rings that are restrained and limited by the two sides of the circular structure of the oblique block connecting block 70. The outer peripheral surfaces of the left and right turning bushings 50 and 51 are circumferentially formed with concave and convex textures to increase friction. When the oblique connecting block 70 and the oblique rod 300 are connected, the cross rod 20 can rotate in the oblique connecting block 70.

[0036] The specific operation process is as follows: when the handle 12 is pulled downward, the surface 122 of the head of the handle 12 and the surface 42 of the washer 4 slide into contact, and the handle 12 can move the lower clutch tooth 3 backward, so that the internal ring tooth 31 of the lower clutch tooth 3 is disengaged from the convex tooth 81 of the upper clutch tooth 8, thereby releasing the rotation restraint of the cross bar 20. When the handle 12 is pulled left and right again, the upper clutch tooth 8 can be linked to the cross bar 20 to rotate relative to the lower clutch tooth 3. When it rotates to a certain position, the handle 12 is released, and under the action of the spring 2 and the torsion spring 9, the handle 12 and the lower clutch tooth 3 are restored to the original meshing state, thereby fixing the umbrella surface at a certain angle.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A handle-operated parasol with left-right angle adjustment, comprising an upright post, a crossbar, an inclined rod, and an umbrella frame; the upright post is provided with a slider, the lower end of the crossbar is connected to the slider, the upper end of the crossbar is connected to the top of the umbrella frame, the rear end of the inclined rod is mounted on the top of the upright post, the front end of the inclined rod is connected to the middle of the crossbar, and the top of the umbrella frame is rotatably connected to the upper end of the crossbar, characterized in that: The parasol also includes an umbrella surface adjustment mechanism that can control the umbrella surface to rotate left and right, and a cross-bar rotation mechanism that can rotate the cross bar when the oblique bar is stationary. The cross-bar rotation mechanism is arranged at the middle part of the cross bar, the front end of the oblique bar is rotatably connected to the cross-bar rotation mechanism, and the lower end of the cross bar is rotatably connected to the slider through the umbrella surface adjustment mechanism. The umbrella surface adjustment mechanism includes a cross-bar joint, an upper clutch tooth, a lower clutch tooth and a handle. The upper clutch tooth is fixedly connected to the cross bar, and the upper end of the cross-bar joint passes through the lower clutch tooth and is rotatably connected to the upper clutch tooth. The lower clutch tooth can be axially limited and moved along the cross-bar joint, meshing with or disengaging from the upper clutch tooth. One end of the handle is rotatably arranged outside the upper clutch tooth and abutting against the upper end surface of the lower clutch tooth. When the handle is turned downward, the lower clutch tooth moves downward under the action of the handle and disengages from the upper clutch tooth. By turning the handle left and right, the cross bar can be rotated to adjust the umbrella surface left and right. The upper clutch tooth is a sleeve structure with an opening at the upper end, and the lower clutch tooth is a sleeve structure with an opening at the lower end. A circular through hole and a square through hole are respectively provided in the middle of the lower end face of the upper clutch tooth and the upper end face of the lower clutch tooth for the cross bar joint to pass through; a circle of convex teeth is formed on the lower end face of the upper clutch tooth around the outer side of the circular through hole, and a circle of ring teeth meshing with the convex teeth is recessed on the upper end face of the lower clutch tooth around the outer side of the square through hole. The upper end of the cross bar joint passes through the square through hole of the lower clutch tooth and the circular through hole of the upper clutch tooth in turn, and is fixed at the upper end by a nut. A spring is supported between the inner wall of the lower clutch tooth and the lower part of the cross bar joint, so that the lower clutch tooth has a tendency to always move upward and engage and lock with the upper clutch tooth.

2. The parasol according to claim 1, characterized in that: The cross bar joint is divided into 5 sections from bottom to top along the length direction, among which the first section as the tail is a connecting section connected to the slider, the second section is a cylindrical section matching the inner hole of the lower clutch tooth, the third section in the middle position is a square column section matching the square through hole of the lower clutch tooth, the fourth section is a reduced diameter cylindrical section matching the circular through hole of the upper clutch tooth, and the topmost fifth section is an external threaded section matching the nut. The spring is sleeved on the third square column section of the cross bar joint, one end of the spring is against the inner side of the square through hole of the lower clutch tooth, and the other end is against and supported by the step surface of the second cylindrical section of the lower clutch tooth.

3. The parasol according to claim 2, characterized in that: The upper and lower ends of the circular through hole of the upper clutch tooth are provided with fixed grooves for the bearing to be embedded. The upper end of the cross bar joint passes through the spring and the upper clutch tooth and is placed on the inner side of the bearing. The third square column section of the cross bar joint is abutted against the bearing at the lower end of the upper clutch tooth for limiting position, and the fourth section of the cross bar joint is tightly fitted with the bearing.

4. The parasol according to claim 3, characterized in that: A movable groove for the upper end of the handle to be placed is provided on the lower side of the lower end surface of the upper clutch tooth. The upper end of the handle is U-shaped and has a cam surface. A through hole is provided laterally at the upper end of the handle, and corresponding rotating holes are provided on both sides of the movable groove. A torsion spring that cooperates with the handle is also provided between the upper end of the handle and the movable groove. The handle and the torsion spring are fixed to the upper clutch tooth by passing a screw through the rotating hole, the through hole of the handle, and the center hole of the torsion spring.

5. The parasol according to claim 4, characterized in that: A washer is embedded on the upper end surface of the lower clutch tooth and is in sliding contact with the upper end of the handle.

6. The parasol according to claim 5, characterized in that: The upper end of the upper clutch tooth is sleeved with a clutch tooth cover, the cross bar is a hollow square tube, the clutch tooth cover is provided with a square through hole for the cross bar to pass through, the lower end of the cross bar is provided with a connecting hole, the upper end of the upper clutch tooth is provided with a corresponding cross bar fixing hole, and the clutch tooth cover is provided with a corresponding through hole, and the two are fixed to the upper clutch tooth by screws.

7. The parasol according to claim 1, characterized in that: The crossbar rotation mechanism includes left and right turning bushings and an oblique rod connecting piece. The left and right turning bushings are semicircular jacket structures. When the left and right turning bushings are matched, a square hole is formed that matches the crossbar. A through mounting hole is opened in the middle of the crossbar, and corresponding through holes are opened in the middle of the left and right turning bushings. The left and right turning bushings are matched and clamped on the left and right sides of the middle of the crossbar and fixed by screws and nuts. The oblique rod connecting piece can be rotatably placed on the outside of the left and right turning bushings. The lower end of the oblique rod connecting piece is a circle structure that matches the left and right turning bushings, and the upper end of the oblique rod connecting piece is rotatably connected to the lower end of the oblique rod.

8. The parasol according to claim 7, characterized in that: The left and right turning bushings are divided into two groups, one above the other, which are respectively located on the upper and lower sides of the circular structure of the oblique block connecting block. The outer end surface of each group of left and right turning bushings is formed with a convex ring that is restrained and limited by the two sides of the circular structure of the oblique block connecting block. The outer peripheral surface of the left and right turning bushings is circumferentially formed with a concave and convex texture to increase friction.

9. The parasol according to any one of claims 1 to 8, characterized in that: The outer periphery of the lower end of the upper clutch tooth is provided with a marking line, and the outer periphery of the upper end of the lower clutch tooth is provided with a scale line that cooperates with the marking line to facilitate observation of the left and right rotation angles.

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