CN216493902U - Automatic opening and closing multi-folding umbrella with safety device - Google Patents

Abstract

An automatically opening and closing multi-fold umbrella with a safety device, comprising: the middle rod (1), the upper nest (21), the lower nest (22), the umbrella handle (3), the opening and closing control device and the safety device; the safety device includes: a reel (51), a ratchet (52), a spring (53), and a safety rope (54); the reel (51) and the ratchet wheel (52) are integrally connected through a first half shaft (55) which is positioned between the reel (51) and the ratchet wheel (52) and arranged along the axial direction, a second half shaft (56) which is arranged separately is inserted into an axial insertion hole which is arranged at the middle part of the reel (51) and the ratchet wheel (52), and a narrow gap (57) is formed between the first half shaft (55) and the second half shaft (56); a clockwork spring (53) is mounted between the reel (51) and the ratchet (52). The spring of the automatic opening and closing multi-fold umbrella can be reliably arranged between the ratchet wheel and the winding wheel, is not easy to fall off, and can effectively separate the opening pull rope and the safety pull rope to prevent the opening pull rope and the safety pull rope from being wound and knotted, so that the opening and closing of the umbrella are smoother.

Description

Automatic opening and closing multi-folding umbrella with safety device

Technical Field

The utility model relates to an umbrella for daily use, in particular to an improved structure of an automatic opening and closing umbrella with a safety device for preventing a middle rod from automatically rebounding when the umbrella is folded.

Background

The existing automatic opening and closing multi-folding umbrella is provided with an opening and closing control device, is very convenient to use, can release the outer tube of the lower nest or the middle rod by pressing a button on the umbrella handle, extends under the action of an opening spring arranged in the middle rod, and pulls the lower nest to move upwards and open the umbrella ribs by an opening pull rope along with the extension of the middle rod, thereby realizing the purpose of automatic opening and closing the umbrella; when the button is pressed again, the locked bullet head in the umbrella handle can be released, so that the umbrella opening pull rope connected with the bullet head loses the pulling force on the lower nest, and the umbrella cover is automatically folded under the action of the umbrella folding spring arranged on the umbrella ribs.

However, after the umbrella surface is folded, the automatic opening and closing multi-fold umbrella still needs to be completely closed by the user forcibly compressing the pipe fittings of the unfolded middle rod to the locking state, and in order to prevent the accident that the middle rod rebounds to hurt people caused by carelessly releasing the middle rod in the process of compressing the middle rod, the automatic opening and closing umbrella is usually provided with a safety device, for example, an automatic opening and closing umbrella safety structure disclosed in the chinese utility model patent with publication number CN201499743U, as shown in fig. 1, comprises: the safety rope comprises a main body 101, a rotating shaft 102 pivoted to the main body 101, a ratchet wheel 103 fixed on the rotating shaft 102, a reel 104 and a clockwork spring 105, a positioning block 106 with one end hinged to the main body 101, and a safety rope (not shown in the figure). The two ends of the safety pull rope are respectively connected with the reel 104 and the upper nest, the free end of the positioning block 106 is opposite to the ratchet teeth of the ratchet 103, the inner side of the positioning block 106 is provided with a lug 107 extending into the main body 101, and the position of the lug 107 is opposite to the position when the bullet head arranged in the middle rod is reset. The clockwork spring 105 can drive the rotating shaft 102 and the winding wheel 104 to rotate in the umbrella folding process so as to wind the safety pull rope, and meanwhile, the ratchet 103 is clamped by the positioning block 106 so as to prevent the safety pull rope from reversely rotating, so that the automatic rebound of the middle rod can be prevented by pulling the safety pull rope.

In the above-mentioned safety structure for opening and closing the umbrella, the shaft 102, the ratchet 103 and the winding wheel 104 are integrally provided, the winding spring 105 is installed on the end side of the shaft 102, the ratchet 103 is located on the other end side of the shaft 102, and the winding wheel 104 is located between the ratchet 103 and the winding spring 105, so that the safety rope connected to the winding wheel 104 is very close to the opening rope connected to the bullet head, and the safety rope and the opening rope are easily wound together or even knotted with the extension and retraction of the middle rod during the actual use, thereby causing the problems of unsmooth opening and closing of the umbrella and even failure. If the winding wheel is arranged at the end side of the rotating shaft and the clockwork spring is arranged in the middle, the bending buckle cannot be arranged at the tail end of the center of the clockwork spring to be buckled with the rotating shaft, and the clockwork spring is easy to fall off when the winding wheel works, so that the clockwork spring cannot play a role of coiling.

SUMMERY OF THE UTILITY MODEL

The utility model provides an automatic opening and closing multi-fold umbrella with a safety device, which can reliably install a spring between a reel and a ratchet.

The technical scheme adopted by the utility model for solving the technical problems is that the automatic opening and closing multi-folding umbrella with the safety device is designed and manufactured, and comprises the following components: a middle bar formed by sliding and sleeving a plurality of pipe fittings, an upper nest and an umbrella handle which are respectively arranged at the top and the bottom of the middle bar, a lower nest which is sleeved on the middle bar in a sliding way, an opening and closing control device and a safety device; the opening and closing control device comprises an opening spring, a bullet head and an opening pull rope, wherein the opening spring and the bullet head are arranged in the inner cavity of the middle rod; the safety device includes: the safety rope comprises a reel, a ratchet wheel and a clockwork which are coaxially connected with the reel, and a safety rope with one end connected with the reel;

the reel and the ratchet wheel are integrally connected through a first half shaft which is positioned between the reel and the ratchet wheel and arranged along the axial direction, a second half shaft which is arranged in a split mode is inserted into an axial insertion hole which is formed in the middle of the reel and the ratchet wheel, and a narrow gap is formed between the first half shaft and the second half shaft; the clockwork spring is installed between the reel and the ratchet wheel.

The cross sections of the first half shaft and the second half shaft are semicircular and are spliced into a cylinder.

The middle part of an axial insertion hole of the ratchet wheel is a semicircular through hole, the other part of the axial insertion hole of the ratchet wheel is a blind hole, and the axial insertion hole of the reel is semicircular; and a boss is arranged on the outer side of the second half shaft, the semicircular part of the cross section of the second half shaft penetrates through the semicircular through hole and is inserted into the semicircular axial insertion hole of the reel, and the boss is abutted against the bottom surface of the blind hole.

The middle part of the axial outer side of the reel is provided with a first convex column in an outward protruding mode, the outer side of the boss of the second half shaft is provided with a second convex column in an outward protruding mode, and the first convex column and the second convex column are rotatably inserted into the umbrella handle.

The inner end part of the clockwork spring is provided with a first bending part and a second bending part which are connected, the first bending part is clamped in the narrow gap between the first half shaft and the second half shaft, and the second bending part is buckled on the side surface of the first half shaft or the second half shaft.

The part of the umbrella opening pull rope in the middle rod is arranged in the umbrella opening spring, and the part of the safety pull rope in the middle rod is arranged outside the umbrella opening spring.

The middle rod is formed by sequentially sliding and sleeving 4 sections of pipe fittings from inside to outside.

Compared with the prior art, in the safety device of the automatic opening and closing multi-fold umbrella with the safety device, a coaxial component consisting of the ratchet wheel, the winding wheel and the rotating shaft is spliced by two split parts, so that the spiral spring can be firmly installed on the rotating shaft between the ratchet wheel and the winding wheel, the umbrella opening pull rope and the safety pull rope can be separated, the winding and knotting in the umbrella opening and closing process are prevented, the opening and closing of the umbrella are smoother, the split structure is more convenient for opening the mold, and the failure rate in the assembling process can be reduced.

Drawings

FIG. 1 is a schematic view of a prior art safety structure for automatically opening and closing an umbrella;

FIG. 2 is a vertical sectional view of the automatically opening and closing multi-fold umbrella of the present invention from front to back when the umbrella is opened;

FIG. 3 is a vertical sectional view of the automatically opening and closing multi-fold umbrella of the present invention from the side when the umbrella is opened;

FIG. 4 is an enlarged view of the umbrella handle of FIG. 2;

FIG. 5 is a side vertical cross-sectional view of the handle with the bullet nose released;

FIG. 6 is a vertical sectional view of the automatically opening and closing multi-fold umbrella of the present invention from front to back when the umbrella is closed;

FIG. 7 is a vertical sectional view of the automatically opening and closing multi-fold umbrella of the present invention from the side when the umbrella is closed;

FIG. 8 is an enlarged view of the handle of FIG. 6;

FIG. 9 is an enlarged view of the handle of FIG. 7;

FIG. 10 is a schematic view of the connection of the parachute opening cord and the safety cord;

FIG. 11 is an exploded view of the reel and ratchet, spring, second axle shaft;

FIG. 12 is a block diagram of the second axle shaft;

FIG. 13 is a cross-sectional view of the reel and ratchet with the second axle shaft in an exploded condition;

FIG. 14 is a structural view of the reel and ratchet wheel assembled with the second axle shaft.

Detailed Description

The preferred embodiments will be described in detail below with reference to the accompanying drawings.

As shown in fig. 2 to 5, the automatically opening and closing multi-fold umbrella with a safety device of the present invention comprises: the umbrella comprises a middle rod 1 formed by sleeving a plurality of pipe fittings in a sliding manner, an upper nest 21 arranged at the top of the middle rod 1, a lower nest 22 sleeved in the middle rod 1 in a sliding manner, an umbrella handle 3 arranged at the bottom of the middle rod 1, umbrella ribs 6 with the inner ends connected with the upper nest 21 and the lower nest 22, an opening and closing control device and a safety device for preventing the middle rod from rebounding when the umbrella is closed. In this embodiment, the middle rod 1 of the multi-fold umbrella adopts a four-fold structure, and is formed by slidably sleeving 4 sections of pipe fittings, namely an outer pipe 11, a first middle pipe 12, a second middle pipe 13 and an inner pipe 14, from outside to inside in sequence.

In this embodiment, the opening and closing control device includes: an umbrella opening spring 41 for providing the power for extending the middle stick 1, a bullet head 42, an umbrella opening rope 43, a hollow mandril 44 with the top fixed on the upper nest 21, a control tube 33 arranged in the umbrella handle 3 for positioning the bullet head 42, a hook piece 32 for locking the bullet head 42 in the control tube 33, and the like. The umbrella opening spring 41, the bullet head 42 and the hollow mandril 44 are arranged in the inner cavity of the middle rod 1, as shown in fig. 2 and 10, one end of the umbrella opening pull rope 43 is connected with the bullet head 42, and the other end of the umbrella opening pull rope is fixedly connected with the upper nest 21 after winding the pulley block 45 arranged at the upper nest 21 and the pulley block 46 arranged at the lower nest 22.

The safety device includes: the winding wheel 51 and the ratchet wheel 52 are coaxially connected, the spring 53, the safety pull rope 54, a clamping piece 58 for limiting the reverse rotation of the ratchet wheel 52 and an elastic piece 582. The reel 51, the ratchet 52, the spring 53, the locking member 58 and the elastic member 582 are arranged in the inner cavity of the handle 3, the two ends of the safety pull rope 54 are respectively connected with the reel 51 and the upper runner 21, the middle part of the locking member 58 is hinged in the handle 3, and the elastic member 582 acts on the upper part of the locking member 58 so that the lower end of the locking member moves towards the ratchet 52.

In the umbrella-folding state as shown in fig. 6 to 9, the sets of ribs 6 are folded, the tubes of the central rod 1 are compressed and folded together, the outer tube 11 at the outermost layer of the central rod 1 is locked by the locking piece 34 arranged in the handle 3 being locked in the through hole opened in the side wall thereof, the bullet 42 is pushed into the control tube 33 by the hollow push rod 44, the hook piece 32 is inserted into the through hole of the side wall of the control tube 33 to lock the bullet 42, the protrusion 581 extending inward below the rotating shaft of the locking piece 58 is pushed outward by the bullet 42 to make the lower end of the locking piece 58 separate from the ratchet 52 (as shown in fig. 9), and the redundant safety pull rope 54 is wound on the reel 51. At this time, when the button 31 on the handle 3 is pressed, the fastener 34 is pulled out of the through hole of the side wall of the outer tube 11, the outer tube 11 is released and the outer tubes of the stick 1 are stretched and elongated upward by the opening spring 41, but the bullet head 42 is still locked in the control tube 33, as the upper nest 21 rises, the opening cord 43 pulls the lower nest 22 up through the pulley blocks 45 and 46 to open the umbrella ribs 6, the safety cord 54 is pulled out from the reel 51, the reel 51 rotates reversely and the spring 53 is tightened, and at this time, the multifold umbrella is in the opening state as shown in fig. 2 to 5.

When the button 31 of the handle 3 is pressed again, as shown in fig. 5, the hook piece 32 retreats from the control tube 33 to release the bullet 42, the bullet 42 moves upward and disengages from the control tube 33, the lower nest 22 moves downward without the pulling force of the opening cord 43, the umbrella ribs 6 are folded by the umbrella-closing spring mounted thereon, and the protrusion 581 of the locking piece 58 loses the pushing force of the bullet 42 to cause the lower end surface of the locking piece 58 to abut against the tooth surface of the ratchet wheel 52 by the elastic piece 582, so that the ratchet wheel 52 can only rotate in the forward direction but not in the reverse direction. When the folded middle rod is compressed downward, the reel 51 rotates forward by the clockwork spring 53 and retracts the safety cord 54, and even if the force of the compressed middle rod 1 is released, the ratchet 52 cannot rotate in the reverse direction, and the middle rod 1 cannot rebound upward under the tension of the safety cord 54. The above structure principle is the prior art, and is not described herein again.

As shown in fig. 11, 13 and 14, the present invention is characterized in that: a first half shaft 55 arranged along the axial direction is connected between the reel 51 and the ratchet wheel 52, the reel 51, the first half shaft 55 and the ratchet wheel 52 are of an integrally formed structure, a second half shaft 56 arranged in a split mode is inserted into an axial insertion hole arranged in the middle of the reel 51 and the ratchet wheel 52, the first half shaft 55 and the second half shaft 56 jointly form a rotating shaft of the reel 51 and the ratchet wheel 52, a narrow gap 57 is formed between the first half shaft 55 and the second half shaft 56, and the clockwork spring 53 is installed on the rotating shaft formed by the first half shaft 55 and the second half shaft 56 between the reel 51 and the ratchet wheel 52.

With the above structure, as shown in fig. 10, the reel 51 is mounted on one side of the coaxial unit, and the safety cord 54 wound around the reel 51 at one end is correspondingly located at the end side, so that the safety cord 54 can be separated from the release cord 43 in the stick 1 as much as possible, and the two can be prevented from being twisted and knotted during releasing and closing.

In order to further separate the parachute opening pulling rope 43 and the safety pulling rope 54, as shown in fig. 2 and 4, the part of the parachute opening pulling rope 43 located in the central rod 1 is arranged inside the parachute opening spring 41 and penetrates through the inner cavity of the hollow mandril 44, and the part of the safety pulling rope 54 located in the central rod 1 is arranged outside the parachute opening spring 41.

As shown in fig. 11, the inner end portion of the center of the wind spring 53 is provided with a first bent portion 531 and a second bent portion 532 connected to each other, wherein the first bent portion 531 is sandwiched in the narrow gap 57 between the first half shaft 55 and the second half shaft 56, and the second bent portion 532 is snapped on the side of the first half shaft 55 or the second half shaft 56. Thus, the spring 53 can be firmly mounted on the first half shaft 55 and the second half shaft 56, the problem that the spring 53 is easy to fall off when the reel 51 works is solved, and the automatic umbrella can be unfolded and folded more smoothly.

In this embodiment, as shown in fig. 12, 13 and 14, the first half shaft 55 and the second half shaft 56 have a semicircular cross section, and are spliced into a cylindrical shape. Accordingly, as shown in fig. 11, one part of the axial insertion holes of the ratchet 52 is a semicircular through hole 521, the other part of the axial insertion holes is a semicircular blind hole 522, and the axial insertion holes 512 of the reel 51 are semicircular blind holes and are axially opposite to the semicircular through hole 521. The outer side of the second half shaft 56 is provided with a boss 561, the boss 561 and the second half shaft 56 form a cylindrical shape, the semicircular part of the cross section of the second half shaft 56 penetrates through the semicircular through hole 521 and is finally inserted into the semicircular axial insertion hole 512 of the reel 51, and the boss 561 abuts against the bottom surface of the blind hole 522.

The middle part of the axial outer side of the reel 51 is provided with a first convex column 511 with a cylindrical outer contour in an outward protruding mode, the outer side of the boss 561 of the second half shaft 56 is also provided with a second convex column 562 with a cylindrical outer contour in an outward protruding mode, and the first convex column 511 and the second convex column 562 are rotatably inserted into the umbrella handle 3 in an inserting mode.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. An automatically opening and closing multi-fold umbrella with a safety device, comprising: a middle bar (1) formed by sliding and sleeving a plurality of pipe fittings, an upper nest (21) and an umbrella handle (3) which are respectively arranged at the top and the bottom of the middle bar (1), a lower nest (22) which is slidably sleeved on the middle bar (1), an opening and closing control device and a safety device; the opening and closing control device comprises an opening spring (41) arranged in the inner cavity of the middle rod (1), a bullet head (42) and an opening pull rope (43) connected with the bullet head; the safety device includes: a reel (51), a ratchet (52) coaxially connected with the reel (51), a spring (53) and a safety rope (54) with one end connected with the reel (51); the method is characterized in that:

the reel (51) and the ratchet wheel (52) are integrally connected through a first half shaft (55) which is positioned between the reel (51) and the ratchet wheel (52) and arranged along the axial direction, a second half shaft (56) which is arranged separately is inserted into an axial insertion hole which is arranged at the middle part of the reel (51) and the ratchet wheel (52), and a narrow gap (57) is formed between the first half shaft (55) and the second half shaft (56); the spring (53) is mounted between the reel (51) and the ratchet (52).

2. The automatically opening and closing multi-fold umbrella with safety device as claimed in claim 1, wherein: the cross sections of the first half shaft (55) and the second half shaft (56) are semicircular, and the first half shaft and the second half shaft are spliced into a cylinder.

3. The automatically opening and closing multi-fold umbrella with safety device as claimed in claim 2, wherein: the middle part of an axial insertion hole of the ratchet wheel (52) is a semicircular through hole (521), the middle part of the axial insertion hole is a blind hole (522), and the axial insertion hole of the reel (51) is semicircular; the outer side of the second half shaft (56) is provided with a boss (561), the semicircular part of the cross section of the second half shaft (56) penetrates through the semicircular through hole (521) and is inserted into the semicircular axial insertion hole of the reel (51), and the boss (561) is abutted against the bottom surface of the blind hole (522).

4. The automatically opening and closing multi-fold umbrella with safety device of claim 3, wherein: the middle part of the axial outer side of the reel (51) is provided with a first convex column (511) in an outward protruding mode, the outer side of the boss (561) of the second half shaft (56) is provided with a second convex column (562) in an outward protruding mode, and the first convex column (511) and the second convex column (562) are rotatably inserted into the umbrella handle (3).

5. The automatically opening and closing multi-fold umbrella with safety device according to any one of claims 1 to 4, wherein: the inner end part of the clockwork spring (53) is provided with a first bending part (531) and a second bending part (532) which are connected, the first bending part (531) is clamped in the narrow gap (57) between the first half shaft (55) and the second half shaft (56), and the second bending part (532) is buckled on the side surface of the first half shaft (55) or the second half shaft (56).

6. The automatically opening and closing multi-fold umbrella with safety device according to any one of claims 1 to 4, wherein: the part of the parachute opening pulling rope (43) positioned in the middle rod (1) is arranged inside the parachute opening spring (41), and the part of the safety pulling rope (54) positioned in the middle rod (1) is arranged outside the parachute opening spring (41).

7. The automatically opening and closing multi-fold umbrella with safety device according to any one of claims 1 to 4, wherein: the middle rod (1) is formed by sequentially sliding and sleeving 4 sections of pipe fittings from inside to outside.

Images