CN216875309U

CN216875309U - Sun umbrella rocker

Info

Publication number: CN216875309U
Application number: CN202220592209.1U
Authority: CN
Inventors: 张鑫
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-07-05
Anticipated expiration: 2032-03-17

Abstract

The utility model belongs to the technical field of sun umbrellas, and relates to a sun umbrella rocker arm which comprises a shell, a mandrel and a wire wheel, wherein one side in the shell is provided with a torsion spring seat, a stop shaft is arranged in the torsion spring seat, a torsion spring is sleeved on the stop shaft, and the torsion spring is tightly matched with the stop shaft in an initial state; one end of the mandrel is driven by the crank, the other end of the mandrel is provided with an arc-shaped boss and extends into the shell to be sleeved outside the torsion spring, two end parts of the torsion spring are positioned in the arc-shaped gap of the arc-shaped boss, and the circumferential distance between the two end parts is smaller than that of the arc-shaped gap; the wire wheel is positioned in the shell and sleeved on the mandrel, the wire wheel rotates along with the mandrel, and when the mandrel rotates, the end part of the arc-shaped boss is in abutting connection with the corresponding end part of the torsion spring and drives the torsion spring to radially expand. The sun umbrella rocker provided by the utility model has the advantages of simple structure, convenience in use, compact layout and stability in operation.

Description

Sun umbrella rocker

Technical Field

The utility model belongs to the technical field of sun umbrellas, and relates to a sun umbrella rocker.

Background

When the sun umbrella is used, the sun umbrella is usually matched with a handle with an anti-slip structure, the handle can drive the wire wheel to wind or unwind a rope when rotating, and when the handle is not rotated, the wire wheel cannot rotate, so that the anti-slip effect is achieved. However, most of the existing anti-slip structures have complex structures and inconvenient operation, and can affect the overall structure of the sun umbrella.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the sun umbrella rocker, which has the advantages of simple structure, convenient use, compact layout and stable operation.

In order to solve the above technical problems, the object of the present invention is achieved by the following technical solutions:

a sun umbrella rocker comprises a shell, a mandrel and a wire wheel, wherein a torsion spring seat is arranged on one side in the shell, a stop shaft is arranged in the torsion spring seat, a torsion spring is sleeved on the stop shaft, and the torsion spring is tightly matched with the stop shaft in an initial state; one end of the mandrel is driven by the crank, the other end of the mandrel is provided with an arc-shaped boss and extends into the shell to be sleeved outside the torsion spring, two end parts of the torsion spring are positioned in the arc-shaped gap of the arc-shaped boss, and the circumferential distance between the two end parts is smaller than that of the arc-shaped gap; the wire wheel is positioned in the shell and sleeved on the mandrel, the wire wheel rotates along with the mandrel, and when the mandrel rotates, the end part of the arc-shaped boss is in abutting connection with the corresponding end part of the torsion spring and drives the torsion spring to radially expand.

In the above-mentioned sun umbrella rocking arm, line wheel and dabber loose fit, the one end of line wheel is provided with the stopper, the stopper is located between two tip of torsional spring, and the circumferential distance of stopper is less than the circumferential distance between two tip, and the stopper is inconsistent with the tip of torsional spring when line wheel rotates. Preferably, the radial dimensions of the arc-shaped boss, the end part of the torsion spring and the limiting block are approximately the same.

In the above mentioned sun umbrella rocker arm, one end of the mandrel is provided with a multi-edge blind hole, and the crank is detachably connected with the multi-edge blind hole.

In the above mentioned sun umbrella rocker arm, the torsion spring seat comprises an annular boss, a cavity is formed between the annular boss and the torsion spring, and the arc boss of the mandrel is located in the cavity. Preferably, the annular boss is located at the outermost side of the torsion spring seat.

In the above mentioned sun umbrella rocker, an annular limiting plate for limiting the mandrel is arranged in the cavity, and the annular limiting plate is axially fixed on the stop shaft. Preferably, the annular limiting plate is clamped on the annular groove of the stop shaft.

In the above mentioned sun umbrella rocker, the thread wheel comprises a thread wheel body and annular guard plates at two sides, the annular guard plate at one side close to the torsion spring is positioned in the cavity, and the annular guard plate at the other side is provided with a through hole for leading out the winding rope.

In the above mentioned sun umbrella rocker, an axial blind hole is provided in the stop shaft, and a positioning table matched with the blind hole extends outwards from one end of the mandrel.

In the above mentioned sun umbrella rocker arm, the positioning table, the stop shaft, the mandrel, the annular boss and the thread wheel are coaxially arranged.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model achieves the purpose of slip prevention through the matching of the torsion spring and the stop shaft. The utility model has the advantages of simple structure, convenient use, compact layout and stable work.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a perspective view of a portion of the assembly of the present invention;

FIG. 3 is an exploded view of FIG. 2;

reference numerals: 1. a housing; 11. a torsion spring seat; 12. a stop shaft; 13. an annular limiting plate; 2. a mandrel; 21. an arc-shaped boss; 22. a positioning table; 3. a wire wheel; 31. a limiting block; 4. a torsion spring.

Detailed Description

The utility model is further described in the following with reference to specific embodiments in conjunction with the accompanying drawings, see fig. 1-3:

a sun umbrella rocker comprises a shell 1, a mandrel 2 and a wire wheel 3, wherein a torsion spring seat 11 is arranged on one side in the shell 1, a stop shaft 12 is arranged in the torsion spring seat 11, a torsion spring 4 is sleeved on the stop shaft 12, and the torsion spring 4 is tightly matched with the stop shaft 12 in an initial state; one end of the core shaft 2 is driven by the crank, the other end of the core shaft is provided with an arc-shaped boss 21 and extends into the shell 1 to be sleeved outside the torsion spring 4, two end parts of the torsion spring 4 are positioned in an arc-shaped notch of the arc-shaped boss 21, and the circumferential distance between the two end parts is smaller than that of the arc-shaped notch; the wire wheel 3 is positioned in the shell 1 and sleeved on the mandrel 2, the wire wheel 3 rotates along with the mandrel 2, and when the mandrel 2 rotates, the end part of the arc-shaped boss 21 is in butt connection with the corresponding end part of the torsion spring 4 and drives the torsion spring 4 to radially expand.

The working mode of the embodiment is as follows: the crank drives the mandrel 2 to rotate, the arc-shaped boss 21 of the mandrel 2 rotates along with the rotation, the arc-shaped boss 21 circumferentially displaces relative to the torsion spring 4 after the end part of the arc-shaped boss 21 abuts against the end part of the torsion spring 4, the arc-shaped boss 21 exerts force on the torsion spring 4 to radially expand the torsion spring 4, the torsion spring 4 is gradually expanded until the torsion spring is separated from the stop shaft 12, then the torsion spring 4 can rotate along with the mandrel 2, and the wire wheel 3 also rotates along with the mandrel 2 to realize rope coiling or rope releasing; after the rope is coiled or unwound, the crank is loosened, the force of the arc-shaped boss 21 on the torsion spring 4 disappears, the torsion spring 4 holds the stop shaft 12 tightly again, and the end part of the torsion spring 4 blocks the spindle 2 and the wire wheel 3 from rotating, so that the positioning effect is realized.

Further, line wheel 3 and dabber 2 loose fit, the one end of line wheel 3 is provided with stopper 31, stopper 31 is located between two tip of torsional spring 4, and stopper 31's circumferential distance is less than the circumferential distance between two tip, and stopper 31 is inconsistent with the tip of torsional spring 4 when line wheel 3 rotates. Preferably, the radial dimensions of the arc-shaped boss 21, the end of the torsion spring 4 and the limiting block 31 are substantially the same. When the core shaft 2 is rotated, the limiting block 31 enables the reel 3 and the core shaft 2 to rotate simultaneously, when the core shaft 2 stops rotating, the limiting block 31 is abutted to the end part of the torsion spring 4, and the tightly-held torsion spring 4 prevents the reel 3 from rotating.

The connecting structure of the mandrel 2 and the crank in the embodiment is as follows: and a multi-edge blind hole is formed in one end of the mandrel 2, and the crank is detachably connected with the multi-edge blind hole.

Referring to fig. 1, in order to make the operation of the present embodiment more stable, the torsion spring seat 11 includes an annular boss, a cavity is formed between the annular boss and the torsion spring 4, and the arc-shaped boss 21 of the core shaft 2 is located in the cavity. Preferably, the annular boss is located at the outermost side of the torsion spring seat 11.

In order to prevent the mandrel 2 from moving too much, an annular limiting plate 13 for limiting the mandrel 2 is arranged in the cavity, and the annular limiting plate 13 is axially fixed on the stop shaft 12. Preferably, the annular limiting plate 13 is clamped on the annular groove of the stop shaft 12.

The specific structure of the wire wheel 3 in this embodiment is: the wire wheel 3 comprises a wire wheel 3 body and annular guard plates on two sides, the annular guard plate close to one side of the torsion spring 4 is positioned in the cavity, and a through hole for leading out a winding rope is formed in the annular guard plate on the other side.

In order to position each component more accurately, an axial blind hole is formed in the stop shaft 12, and a positioning table 22 matched with the blind hole extends outwards from one end of the mandrel 2. Furthermore, the positioning table 22, the stop shaft 12, the mandrel 2, the annular boss and the reel 3 are coaxially arranged.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: equivalent changes made according to the structure, shape and principle of the utility model shall be covered by the protection scope of the utility model.

Claims

1. A sun umbrella rocker arm is characterized by comprising a shell (1), a mandrel (2) and a wire wheel (3), wherein a torsion spring seat (11) is arranged on one side in the shell (1), a stop shaft (12) is arranged in the torsion spring seat (11), a torsion spring (4) is sleeved on the stop shaft (12), and the torsion spring (4) is tightly matched with the stop shaft (12) in an initial state; one end of the mandrel (2) is driven by the crank, the other end of the mandrel is provided with an arc-shaped boss (21) and extends into the shell (1) to be sleeved outside the torsion spring (4), two end parts of the torsion spring (4) are positioned in an arc-shaped notch of the arc-shaped boss (21), and the circumferential distance between the two end parts is smaller than that of the arc-shaped notch; the wire wheel (3) is positioned in the shell (1) and sleeved on the mandrel (2), the wire wheel (3) rotates along with the mandrel (2), and when the mandrel (2) rotates, the end part of the arc-shaped boss (21) is in conflict connection with the corresponding end part of the torsion spring (4) and drives the torsion spring (4) to radially expand.

2. A sun umbrella rocker according to claim 1, wherein the roller (3) is loosely fitted with the mandrel (2), one end of the roller (3) is provided with a stopper (31), the stopper (31) is located between two ends of the torsion spring (4), the circumferential distance of the stopper (31) is smaller than the circumferential distance between the two ends, and the stopper (31) is abutted against the ends of the torsion spring (4) when the roller (3) rotates.

3. A sun umbrella rocker according to claim 1, wherein the torsion spring seat (11) comprises an annular boss, a cavity is formed between the annular boss and the torsion spring (4), and the arc-shaped boss (21) of the mandrel (2) is located in the cavity.

4. A sun umbrella rocker according to claim 3, characterized in that a ring-shaped limiting plate (13) for limiting the mandrel (2) is arranged in the cavity, and the ring-shaped limiting plate (13) is axially fixed on the stop shaft (12).

5. A sun umbrella rocker according to claim 3, wherein the roller (3) comprises a roller body and annular guard plates at two sides, the annular guard plate at one side close to the torsion spring (4) is positioned in the cavity, and the annular guard plate at the other side is provided with a through hole for leading out a winding rope.

6. A sun umbrella rocker according to claim 3, wherein the stop shaft (12) is provided with an axial blind hole, and one end of the mandrel (2) extends outwards to form a positioning table (22) matched with the blind hole.

7. A sun umbrella rocker according to claim 6, characterized in that the positioning table (22), the stop shaft (12), the mandrel (2), the annular boss and the reel (3) are coaxially arranged.