CA2878310C - Opening/closing structure for an automatic umbrella - Google Patents
Opening/closing structure for an automatic umbrella Download PDFInfo
- Publication number
- CA2878310C CA2878310C CA2878310A CA2878310A CA2878310C CA 2878310 C CA2878310 C CA 2878310C CA 2878310 A CA2878310 A CA 2878310A CA 2878310 A CA2878310 A CA 2878310A CA 2878310 C CA2878310 C CA 2878310C
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- CA
- Canada
- Prior art keywords
- tube
- runner
- screw rod
- automatic umbrella
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000008878 coupling Effects 0.000 claims abstract description 31
- 238000010168 coupling process Methods 0.000 claims abstract description 31
- 238000005859 coupling reaction Methods 0.000 claims abstract description 31
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
Classifications
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B25/00—Details of umbrellas
- A45B25/16—Automatic openers, e.g. frames with spring mechanisms
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B25/00—Details of umbrellas
- A45B25/14—Devices for opening and for closing umbrellas
- A45B25/143—Devices for opening and for closing umbrellas automatic
Landscapes
- Walking Sticks, Umbrellas, And Fans (AREA)
Abstract
An opening/closing structure for an automatic umbrella contains: a shaft assembly, a frame, a notch, a first runner, a second runner, a driving mechanism, and a handle. The, shaft assembly includes a first tube and a second tube; the frame couples with the notch and the second runner; the driving mechanism includes a screw rod and a push post. The push post has a drive portion and inner threads; the push post is connected with the first tube by inserting a joining element into the second tube, and the second tube has a slot longitudinally formed on an outer wall thereof, such that the joining element moves upwardly or downwardly along the slot, the push post has the drive portion, a coupling portion, and a deforming portion; the deforming portion is rigid to shaft itself in an axial direction and deforms and recovers its original shape in a torque direction.
Description
OPENING/CLOSING STRUCTURE FOR
AN AUTOMATIC UMBRELLA
BACKGROUND OF THE INVENTION
Field of the Invention The present invention relates to an umbrella, and more particularly to an opening/closing structure for an automatic umbrella which is opened and closed completely.
Description of the Prior Art A conventionally umbrella is employed to shield rains in a rainy day and contains a frame manually pushed to a certain position to expand the umbrella. To improve manually expand the umbrella, an automatic umbrella is developed and contains a button fixed on a handle to be pressed to expand the automatic umbrella automatically, but such an automatic umbrella cannot be retracted automatically, i.e., the automatic umbrella is retracted manually, so a user will get wet during manually retracting the automatic umbrella.
However, when a driving structure drives a first tube to move upwardly relative to a second tube, a shaft assembly causes vibration, so a user cannot hold the automatic umbrella comfortably.
In other words, when a screw rod of the driving mechanism drives a push post to move upwardly toward a complete opening position, inner threads on a lower end of the push post actuate the first tube to rotate relative to the second tube, and then the shaft assembly vibrates after receiving a rotating force of the first tube, thus reducing service life of the automatic umbrella.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
SUMMARY OF THE INVENTION
One aspect of the present invention is to provide an opening/closing structure for an automatic umbrella which enhances comfort, avoid vibration, and prolongs service life of the automatic umbrella.
To obtain the above, an opening/closing structure for an automatic umbrella provided by the present invention contains: a shaft assembly, a frame, a notch, a first runner, a second runner, a driving mechanism, and a handle in which a power source is configured.
The shaft assembly includes a first tube and a second tube, a length of the second tube is larger than that of the first tube, a lower end of the second tube is fixed on the handle, an upper end of the second tube matches with the notch, the first tube is fitted on the second tube to move between the notch and the handle on the
AN AUTOMATIC UMBRELLA
BACKGROUND OF THE INVENTION
Field of the Invention The present invention relates to an umbrella, and more particularly to an opening/closing structure for an automatic umbrella which is opened and closed completely.
Description of the Prior Art A conventionally umbrella is employed to shield rains in a rainy day and contains a frame manually pushed to a certain position to expand the umbrella. To improve manually expand the umbrella, an automatic umbrella is developed and contains a button fixed on a handle to be pressed to expand the automatic umbrella automatically, but such an automatic umbrella cannot be retracted automatically, i.e., the automatic umbrella is retracted manually, so a user will get wet during manually retracting the automatic umbrella.
However, when a driving structure drives a first tube to move upwardly relative to a second tube, a shaft assembly causes vibration, so a user cannot hold the automatic umbrella comfortably.
In other words, when a screw rod of the driving mechanism drives a push post to move upwardly toward a complete opening position, inner threads on a lower end of the push post actuate the first tube to rotate relative to the second tube, and then the shaft assembly vibrates after receiving a rotating force of the first tube, thus reducing service life of the automatic umbrella.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
SUMMARY OF THE INVENTION
One aspect of the present invention is to provide an opening/closing structure for an automatic umbrella which enhances comfort, avoid vibration, and prolongs service life of the automatic umbrella.
To obtain the above, an opening/closing structure for an automatic umbrella provided by the present invention contains: a shaft assembly, a frame, a notch, a first runner, a second runner, a driving mechanism, and a handle in which a power source is configured.
The shaft assembly includes a first tube and a second tube, a length of the second tube is larger than that of the first tube, a lower end of the second tube is fixed on the handle, an upper end of the second tube matches with the notch, the first tube is fitted on the second tube to move between the notch and the handle on the
2 second tube, and the second runner is fitted on the first tube.
= The frame couples with the notch and the second runner.
The driving mechanism includes a screw rod and a push post for cooperating with the screw rod.
A lower end of the screw rod is joined with the power . source in the handle.
The push post has a drive portion for matching with the screw rod and inner threads formed on the drive portion and screwing with the screw rod, such that the power source is started to drive the screw rod to rotate clockwisely or counterclockwisely, and the push post is driven by the screw rod to move upwardly or downwardly relative to the screw rod.
The push post is inserted into the second tube and its upper end is connected with the first tube by inserting a joining element into the second tube, and the second tube has a slot longitudinally formed on an outer wall thereof, such that the joining element moves upwardly or downwardly along the slot, the push post has the drive portion arranged on a lower end thereof to match with the screw rod, a coupling portion formed on an upper end thereof, and a deforming portion connecting with the drive portion and the coupling portion; the deforming portion is rigid to shaft itself in an axial direction and deforms and recovers its original shape in a torque direction.
= The frame couples with the notch and the second runner.
The driving mechanism includes a screw rod and a push post for cooperating with the screw rod.
A lower end of the screw rod is joined with the power . source in the handle.
The push post has a drive portion for matching with the screw rod and inner threads formed on the drive portion and screwing with the screw rod, such that the power source is started to drive the screw rod to rotate clockwisely or counterclockwisely, and the push post is driven by the screw rod to move upwardly or downwardly relative to the screw rod.
The push post is inserted into the second tube and its upper end is connected with the first tube by inserting a joining element into the second tube, and the second tube has a slot longitudinally formed on an outer wall thereof, such that the joining element moves upwardly or downwardly along the slot, the push post has the drive portion arranged on a lower end thereof to match with the screw rod, a coupling portion formed on an upper end thereof, and a deforming portion connecting with the drive portion and the coupling portion; the deforming portion is rigid to shaft itself in an axial direction and deforms and recovers its original shape in a torque direction.
3 Since the push post has three portions, when the automatic umbrella is opened completely, the power source drives the screw rod to rotate relative to the drive portion, wherein the drive portion is driven to rotates by ways of the deforming portion and the coupling portion, and the deforming portion deforms to resist against the drive portion, such that the coupling portion is not influenced by the drive portion, the first tube moves stably, thus preventing vibration of the shaft assembly, enhancing comfort of the automatic umbrella, and prolonging service life of the automatic umbrella.
According to one aspect of the invention there is provided an opening/closing structure for an automatic umbrella comprising:
a shaft assembly, a frame, a notch, a first runner, a driving mechanism, and a handle in which a power source is configured;
the shaft assembly including a first tube and a second tube, a length of the second tube being larger than that of the first tube, a lower end of the second tube being fixed on the handle, an upper end of the second tube matching with the notch, the first tube being fitted on the second tube to move between the notch and the handle on the second tube, and the first runner being fitted on the first tube;
the frame coupling with the notch and the first runner;
the driving mechanism including a screw rod and a push
According to one aspect of the invention there is provided an opening/closing structure for an automatic umbrella comprising:
a shaft assembly, a frame, a notch, a first runner, a driving mechanism, and a handle in which a power source is configured;
the shaft assembly including a first tube and a second tube, a length of the second tube being larger than that of the first tube, a lower end of the second tube being fixed on the handle, an upper end of the second tube matching with the notch, the first tube being fitted on the second tube to move between the notch and the handle on the second tube, and the first runner being fitted on the first tube;
the frame coupling with the notch and the first runner;
the driving mechanism including a screw rod and a push
4 post for cooperating with the screw rod; wherein a lower end of the screw rod is joined with the power source in the handle;
the push post has a drive portion for matching with the screw rod and inner threads formed on the drive portion and screwing with the screw rod, such that the power source is started to drive the screw rod to rotate clockwise or counterclockwise, and the push post is driven by the screw rod to move upwardly or downwardly relative to the screw rod;
the push post is inserted into the second tube and its upper end is connected with the first tube by inserting a joining element into the second tube, and the second tube has a slot longitudinally formed on an outer wall thereof, such that the joining element moves upwardly or downwardly along the slot, the push post has the drive portion arranged on a lower end thereof to match with the screw rod, a coupling portion formed on an upper end thereof, and a deforming portion connecting with the drive portion and the coupling portion;
the deforming portion having generally fixed length in an axial direction along the shaft assembly so as to generally maintain constant spacing between the drive portion and the coupling portion;
and the deforming portion being twistable about an axis of 4a the shaft assembly, which is parallel to the axial direction, from an original position angularly of said axis and arranged to return to said original position.
Twisting of the deforming portion occurs in a torque direction which is any one of two rotational directions about the axial direction.
The deforming portion may be a rigid piece rotatable about the axis of the shaft assembly.
Alternatively the deforming portion may be at least two cables which are symmetrically arranged, two ends of each cable are joined with the drive portion and the coupling portion such that each cable extends along the shaft assembly, and the cables are arranged so as to be substantially incompressible along their respective length for maintaining the constant spacing between the drive portion and the coupling portion.
Alternatively the deforming portion may be plural cables equidistantly arranged between the drive portion and the coupling portion, wherein two ends of each cable are joined with the drive portion and the coupling portion such that each cable extends along the shaft assembly and the cables are arranged so as to be substantially incompressible along their respective length for maintaining the constant spacing between the drive portion and the coupling portion.
4b BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view showing the exploded components of a shaft assembly of an opening/closing structure for an automatic umbrella according to a preferred embodiment of the present invention.
FIG. 1A is an amplified cross-sectional view of a part of a portion AA of FIG. I according to the preferred embodiment of the present invention.
FIG. 2 is a cross sectional view showing the assembly of the opening/closing structure for the automatic umbrella according to the preferred embodiment of the present invention.
FIG. 3 is another cross sectional view showing the 4c assembly of the opening/closing structure for the automatic umbrella according to the preferred embodiment of the present invention.
FIG. 4 is a perspective cross sectional view showing the assembly of a shaft assembly of the opening/closing structure for the automatic umbrella according to the preferred embodiment of the present invention.
FIG. 5 is a perspective view showing the operation of a screw rod and a push post of the opening/closing structure for the automatic umbrella according to the preferred embodiment of the present invention.
FIG. 6 is another perspective view showing the operation of the screw rod and the push post of the opening/closing structure for the automatic umbrella according to the preferred embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED
EMBODIMENTS
The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, a preferred embodiment in accordance with the present invention.
With reference to FIGS. 1-4, an opening/closing structure
the push post has a drive portion for matching with the screw rod and inner threads formed on the drive portion and screwing with the screw rod, such that the power source is started to drive the screw rod to rotate clockwise or counterclockwise, and the push post is driven by the screw rod to move upwardly or downwardly relative to the screw rod;
the push post is inserted into the second tube and its upper end is connected with the first tube by inserting a joining element into the second tube, and the second tube has a slot longitudinally formed on an outer wall thereof, such that the joining element moves upwardly or downwardly along the slot, the push post has the drive portion arranged on a lower end thereof to match with the screw rod, a coupling portion formed on an upper end thereof, and a deforming portion connecting with the drive portion and the coupling portion;
the deforming portion having generally fixed length in an axial direction along the shaft assembly so as to generally maintain constant spacing between the drive portion and the coupling portion;
and the deforming portion being twistable about an axis of 4a the shaft assembly, which is parallel to the axial direction, from an original position angularly of said axis and arranged to return to said original position.
Twisting of the deforming portion occurs in a torque direction which is any one of two rotational directions about the axial direction.
The deforming portion may be a rigid piece rotatable about the axis of the shaft assembly.
Alternatively the deforming portion may be at least two cables which are symmetrically arranged, two ends of each cable are joined with the drive portion and the coupling portion such that each cable extends along the shaft assembly, and the cables are arranged so as to be substantially incompressible along their respective length for maintaining the constant spacing between the drive portion and the coupling portion.
Alternatively the deforming portion may be plural cables equidistantly arranged between the drive portion and the coupling portion, wherein two ends of each cable are joined with the drive portion and the coupling portion such that each cable extends along the shaft assembly and the cables are arranged so as to be substantially incompressible along their respective length for maintaining the constant spacing between the drive portion and the coupling portion.
4b BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view showing the exploded components of a shaft assembly of an opening/closing structure for an automatic umbrella according to a preferred embodiment of the present invention.
FIG. 1A is an amplified cross-sectional view of a part of a portion AA of FIG. I according to the preferred embodiment of the present invention.
FIG. 2 is a cross sectional view showing the assembly of the opening/closing structure for the automatic umbrella according to the preferred embodiment of the present invention.
FIG. 3 is another cross sectional view showing the 4c assembly of the opening/closing structure for the automatic umbrella according to the preferred embodiment of the present invention.
FIG. 4 is a perspective cross sectional view showing the assembly of a shaft assembly of the opening/closing structure for the automatic umbrella according to the preferred embodiment of the present invention.
FIG. 5 is a perspective view showing the operation of a screw rod and a push post of the opening/closing structure for the automatic umbrella according to the preferred embodiment of the present invention.
FIG. 6 is another perspective view showing the operation of the screw rod and the push post of the opening/closing structure for the automatic umbrella according to the preferred embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED
EMBODIMENTS
The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, a preferred embodiment in accordance with the present invention.
With reference to FIGS. 1-4, an opening/closing structure
5 for an automatic umbrella according to a preferred embodiment of the present invention, the automatic umbrella comprises: a shaft assembly 1, a frame 2, an umbrella cloth (not shown) disposed on the frame 2, a notch 4, a first runner 6, a second runner 5, a driving mechanism 7, and a handle 8 in which a power source 8A is configured.
The frame 2 includes a plurality of ribs 21, plural first auxiliary stretchers 22, and plural second auxiliary stretchers 23; a first end of each rib 21 is connected with the notch 4, and a second end of each rib 21 is a free segment 211; a first end of each first auxiliary stretcher 22 is coupled with the second runner 5, and a second end of each first auxiliary stretcher 22 is joined with each rib 21; a first end of each second auxiliary stretcher 23 is in connection with the first runner 6, and a second end of each second auxiliary stretcher 23 is coupled with each rib 21. In addition, between the first runner 6 and each rib 21 is defined a spring 24.
Referring to FIG. 1, the shaft assembly 1 includes a first tube 11 and a second tube 12, wherein a length of the second tube 12 is larger than that of the first tube 11, and a lower end of the second tube 12 is fixed on the handle 8, an upper end of the second tube 12 matches with the notch 4. The first tube 11 is fitted on the second tube 12 to move between the notch 4 and the
The frame 2 includes a plurality of ribs 21, plural first auxiliary stretchers 22, and plural second auxiliary stretchers 23; a first end of each rib 21 is connected with the notch 4, and a second end of each rib 21 is a free segment 211; a first end of each first auxiliary stretcher 22 is coupled with the second runner 5, and a second end of each first auxiliary stretcher 22 is joined with each rib 21; a first end of each second auxiliary stretcher 23 is in connection with the first runner 6, and a second end of each second auxiliary stretcher 23 is coupled with each rib 21. In addition, between the first runner 6 and each rib 21 is defined a spring 24.
Referring to FIG. 1, the shaft assembly 1 includes a first tube 11 and a second tube 12, wherein a length of the second tube 12 is larger than that of the first tube 11, and a lower end of the second tube 12 is fixed on the handle 8, an upper end of the second tube 12 matches with the notch 4. The first tube 11 is fitted on the second tube 12 to move between the notch 4 and the
6 handle 8 on the second tube 12, and the second runner 5 and the first runner 6 are fitted on the first tube 11; wherein the first tube 11 has a limiting member 111 fixed thereon to limit the second runner to move above the limiting member 111. In this embodiment, the 5 limiting member 111 is a shoulder formed on the first tube 11, and the limiting member 111 is a stop ring or a bolt fitted on the first tube 11 in another embodiment. To avoid a removal of the second runner 5 from the first tube 11, after the second runner 5 is fixed on the first tube 11, an anti-off member 112 are mounted on the first tube 11 and its structure is identical to that of the limiting member 111. Furthermore, the first tube 111 also has a connecting orifice 113 defined thereon.
The driving mechanism 7 includes a screw rod 71 and a push post 72 for cooperating with the screw rod 71; a lower end of the screw rod 71 is joined with the power source 8A in the handle 8, the push post 72 has a drive portion 720 for matching with the screw rod 71 and inner threads 721 formed on the drive portion 720 and screwing with the screw rod 71, such that the power source 8A is started to drive the screw rod 71 to rotate clockwisely or counterclockwisely, and then the push post 72 is driven by the screw rod 71 to move upwardly or downwardly relative to the screw rod 71. The push post 72 is inserted into the second tube 12 so that its upper end is connected with the first tube 11 by inserting a
The driving mechanism 7 includes a screw rod 71 and a push post 72 for cooperating with the screw rod 71; a lower end of the screw rod 71 is joined with the power source 8A in the handle 8, the push post 72 has a drive portion 720 for matching with the screw rod 71 and inner threads 721 formed on the drive portion 720 and screwing with the screw rod 71, such that the power source 8A is started to drive the screw rod 71 to rotate clockwisely or counterclockwisely, and then the push post 72 is driven by the screw rod 71 to move upwardly or downwardly relative to the screw rod 71. The push post 72 is inserted into the second tube 12 so that its upper end is connected with the first tube 11 by inserting a
7 joining element 73 into the second tube 12 and the connecting orifice 113, and the second tube 12 has a slot 121 longitudinally formed on an outer wall thereof so that the joining element 73 moves upwardly or downwardly along the slot 121.
It is to be noted that the push post 72 has the drive portion 720 arranged on a lower end thereof to match with the screw rod 71, a coupling portion 722 formed on an upper end thereof, and a deforming portion 723 connecting with the drive portion 720 and the coupling portion 722. The coupling portion 722 cooperates with an inner wall of the second tube 12 and is coupled with the first tube 11 by inserting the joining element 73 into the first tube 11.
The deforming portion 723 is any one of a rigid piece, at least two rigid cables which are symmetrically arranged, and plural rigid cables equidistantly arranged between the drive portion 720 and the coupling portion 722, wherein two ends of each rigid cable are joined with the drive portion 720 and the coupling portion 722. The deforming portion 723 is rigid to shaft itself in an axial direction X1 and deforms and recovers its original shape in a torque direction Y1. As shown in FIG. 5, the screw rod 71 actuates the push post 72 to rotate; and as illustrated in FIG. 6, the screw rod 71 stops actuating the push post 72, and then the deforming portion 723 stops deformation to maintain a pushing force of the push post 72 stably and to avoid structural impact. It is to be noted that a
It is to be noted that the push post 72 has the drive portion 720 arranged on a lower end thereof to match with the screw rod 71, a coupling portion 722 formed on an upper end thereof, and a deforming portion 723 connecting with the drive portion 720 and the coupling portion 722. The coupling portion 722 cooperates with an inner wall of the second tube 12 and is coupled with the first tube 11 by inserting the joining element 73 into the first tube 11.
The deforming portion 723 is any one of a rigid piece, at least two rigid cables which are symmetrically arranged, and plural rigid cables equidistantly arranged between the drive portion 720 and the coupling portion 722, wherein two ends of each rigid cable are joined with the drive portion 720 and the coupling portion 722. The deforming portion 723 is rigid to shaft itself in an axial direction X1 and deforms and recovers its original shape in a torque direction Y1. As shown in FIG. 5, the screw rod 71 actuates the push post 72 to rotate; and as illustrated in FIG. 6, the screw rod 71 stops actuating the push post 72, and then the deforming portion 723 stops deformation to maintain a pushing force of the push post 72 stably and to avoid structural impact. It is to be noted that a
8 longitudinal moving stoke of the inner threads 721 along the screw rod 71 is a longitudinal moving stoke of the second runner 5 relative to the second tube 12.
The handle 8 is formed in a cover shape to accommodate the power source 8A and includes a control button 81 for starting the power source 8A to rotate clockwisely or counterclockwisely.
The power source 8A is a speed change gear or a motor.
With reference to FIG. 3, when the automatic umbrella is closed, the drive portion 720 is located at the lower end of the screw rod 71, i.e., the push post 72 is located at the lower end of the screw rod 71 relative to the second tube 12.
Referring to FIG. 2, when the automatic umbrella is opened, the power source 8A is started to output a clockwise rotating force by which the screw rod 71 is driven to rotate, and the drive portion 720 moves upwardly along the screw rod 71, the deforming portion 723 pushes the coupling portion 722 to drive the first tube 11, and then the first tube 11 moves upwardly relative to the second tube 12, the limiting member 111 simultaneously pushes the second runner 5 to move upwardly, such that the plurality of first auxiliary stretchers 22 push the plurality of ribs 21 to expand outwardly, and the plurality of ribs 21 drive the second auxiliary stretchers 22 to expand upwardly and actuate the first runner 6 to move upwardly toward an upper end of the first tube 11, thus opening the
The handle 8 is formed in a cover shape to accommodate the power source 8A and includes a control button 81 for starting the power source 8A to rotate clockwisely or counterclockwisely.
The power source 8A is a speed change gear or a motor.
With reference to FIG. 3, when the automatic umbrella is closed, the drive portion 720 is located at the lower end of the screw rod 71, i.e., the push post 72 is located at the lower end of the screw rod 71 relative to the second tube 12.
Referring to FIG. 2, when the automatic umbrella is opened, the power source 8A is started to output a clockwise rotating force by which the screw rod 71 is driven to rotate, and the drive portion 720 moves upwardly along the screw rod 71, the deforming portion 723 pushes the coupling portion 722 to drive the first tube 11, and then the first tube 11 moves upwardly relative to the second tube 12, the limiting member 111 simultaneously pushes the second runner 5 to move upwardly, such that the plurality of first auxiliary stretchers 22 push the plurality of ribs 21 to expand outwardly, and the plurality of ribs 21 drive the second auxiliary stretchers 22 to expand upwardly and actuate the first runner 6 to move upwardly toward an upper end of the first tube 11, thus opening the
9 automatic umbrella completely, wherein the second runner 5 drives the plurality of first auxiliary stretchers 22 to expand the plurality of ribs 21 of the frame 2. Thereafter, plural springs 24 pull the plurality of ribs 21, and the umbrella cloth forces the frame 2 so that an angle forms between the frame 2 and the plurality of second auxiliary stretchers 23, thereby stopping an upward movement of the first runner 6.
To obtain aesthetics appearance of the shaft assembly 1, a protective sleeve 116 is covered on a lower end of the first tube 11.
Moreover, a buffer pad 9 is defined between the second runner 5 and the first runner 6 to buffer an impact force between the second runner 5 and the first runner 6, when the first runner 6 is pulled upwardly toward the second runner 5. As closing the automatic umbrella, a protrusion 114 is disposed on the lower end of the first tube 11 and its outer diameter is larger than an inner diameter of the first runner 6, such that when the automatic umbrella is opened, the protrusion 114 acts the first runner 6, thus opening the automatic umbrella easily. Between the lower end of the second tube 12 and the handle 8 are fitted a protective fitting 115 and a fixing loop 117 for fixing the protective fitting 115 on the handle 8 tightly.
As shown in FIG. 4, when the automatic umbrella is opened completely, the power source 8A drives the screw rod 71 to rotate relative to the drive portion 720. Since the push post 71 has three portions, the drive portion 720 rotates by ways of the deforming portion 723 and the coupling portion 722, and the deforming portion 723 deforms to resist against the drive portion 720 in the torque direction Y1, such that the coupling portion 722 is not influenced by the drive portion 720, and the push post 72 moves in the axial direction X1, the first tube 11 moves stably, thus preventing vibration of the shaft assembly 1, enhancing comfort of the automatic umbrella, and prolonging service life of the automatic umbrella.
As shown in FIG. 1A, when the deforming portion 723 are the at least two rigid cables, a sound eliminating layer 724 is fitted on the deforming portion 723. Thereby, the deforming portion 723 does not hit the second tube 12 to make noise. Preferably, the sound eliminating layer 724 is a rubber sleeve or other flexible casing.
While various embodiments in accordance with the present invention have been shown and described, it is clear to those skilled in the art that further embodiments may be made =
without departing from the scope of the present invention.
To obtain aesthetics appearance of the shaft assembly 1, a protective sleeve 116 is covered on a lower end of the first tube 11.
Moreover, a buffer pad 9 is defined between the second runner 5 and the first runner 6 to buffer an impact force between the second runner 5 and the first runner 6, when the first runner 6 is pulled upwardly toward the second runner 5. As closing the automatic umbrella, a protrusion 114 is disposed on the lower end of the first tube 11 and its outer diameter is larger than an inner diameter of the first runner 6, such that when the automatic umbrella is opened, the protrusion 114 acts the first runner 6, thus opening the automatic umbrella easily. Between the lower end of the second tube 12 and the handle 8 are fitted a protective fitting 115 and a fixing loop 117 for fixing the protective fitting 115 on the handle 8 tightly.
As shown in FIG. 4, when the automatic umbrella is opened completely, the power source 8A drives the screw rod 71 to rotate relative to the drive portion 720. Since the push post 71 has three portions, the drive portion 720 rotates by ways of the deforming portion 723 and the coupling portion 722, and the deforming portion 723 deforms to resist against the drive portion 720 in the torque direction Y1, such that the coupling portion 722 is not influenced by the drive portion 720, and the push post 72 moves in the axial direction X1, the first tube 11 moves stably, thus preventing vibration of the shaft assembly 1, enhancing comfort of the automatic umbrella, and prolonging service life of the automatic umbrella.
As shown in FIG. 1A, when the deforming portion 723 are the at least two rigid cables, a sound eliminating layer 724 is fitted on the deforming portion 723. Thereby, the deforming portion 723 does not hit the second tube 12 to make noise. Preferably, the sound eliminating layer 724 is a rubber sleeve or other flexible casing.
While various embodiments in accordance with the present invention have been shown and described, it is clear to those skilled in the art that further embodiments may be made =
without departing from the scope of the present invention.
Claims (8)
1. An opening/closing structure for an automatic umbrella comprising: a shaft assembly, a frame, a notch, a first runner, a driving mechanism, and a handle in which a power source is configured;
the shaft assembly including a first tube and a second tube, a length of the second tube being larger than that of the first tube, a lower end of the second tube being fixed on the handle, art upper end of the second tube matching with the notch, the first tube being fitted on the second tube to move between the notch and the handle on the second tube, and the first runner being fitted on the first tube;
the frame coupling with the notch and the first runner;
the driving mechanism including a screw rod and a push post for cooperating with the screw rod; wherein a lower end of the screw rod is joined with the power source in the handle;
the push post has a drive portion for matching with the screw rod and inner threads formed on the drive portion and screwing with the screw rod, such that the power source is started to drive the screw rod to rotate clockwise or counterclockwise, and the push post is driven by the screw rod to move upwardly or downwardly relative to the screw rod;
the push post is inserted into the second tube and its upper end is connected with the first tube by inserting a joining element into the second tube, and the second tube has a slot longitudinally formed on an outer wall thereof, such that the joining element moves upwardly or downwardly along the slot, the push post has the drive portion arranged on a lower end thereof to match with the screw rod, a coupling portion formed on an upper end thereof, and a deforming portion connecting with the drive portion and the coupling portion;
the deforming portion having generally fixed length in an axial direction along the shaft assembly so as to generally maintain constant spacing between the drive portion and the coupling portion;
and the deforming portion being twistable about an axis of the shaft assembly, which is parallel to the axial direction, from an original position angularly of said axis and arranged to return to said original position.
the shaft assembly including a first tube and a second tube, a length of the second tube being larger than that of the first tube, a lower end of the second tube being fixed on the handle, art upper end of the second tube matching with the notch, the first tube being fitted on the second tube to move between the notch and the handle on the second tube, and the first runner being fitted on the first tube;
the frame coupling with the notch and the first runner;
the driving mechanism including a screw rod and a push post for cooperating with the screw rod; wherein a lower end of the screw rod is joined with the power source in the handle;
the push post has a drive portion for matching with the screw rod and inner threads formed on the drive portion and screwing with the screw rod, such that the power source is started to drive the screw rod to rotate clockwise or counterclockwise, and the push post is driven by the screw rod to move upwardly or downwardly relative to the screw rod;
the push post is inserted into the second tube and its upper end is connected with the first tube by inserting a joining element into the second tube, and the second tube has a slot longitudinally formed on an outer wall thereof, such that the joining element moves upwardly or downwardly along the slot, the push post has the drive portion arranged on a lower end thereof to match with the screw rod, a coupling portion formed on an upper end thereof, and a deforming portion connecting with the drive portion and the coupling portion;
the deforming portion having generally fixed length in an axial direction along the shaft assembly so as to generally maintain constant spacing between the drive portion and the coupling portion;
and the deforming portion being twistable about an axis of the shaft assembly, which is parallel to the axial direction, from an original position angularly of said axis and arranged to return to said original position.
2. The opening/closing structure for the automatic umbrella as claimed in claim 1 further comprising a second runner, and the frame including a plurality of ribs, plural first auxiliary stretchers, and plural second auxiliary stretchers; wherein a first end of each rib is connected with the notch, and a second end of each rib is a free segment; a first end of each first auxiliary stretcher is coupled with the second runner, and a second end of each first auxiliary stretcher is joined with each rib; a first end of each second auxiliary stretcher is in connection with the first runner, and a second end of each second auxiliary stretcher is coupled with each rib; and there is provided a spring between the first runner and each rib .
3. The opening/closing structure for the automatic umbrella as claimed in claim 1, wherein the deforming portion is a rigid piece rotatable about the axis of the shaft assembly.
4. The opening/closing structure for the automatic umbrella as claimed in claim 1, wherein the deforming portion is at least two cables which are symmetrically arranged, two ends of each cable are joined with the drive portion and the coupling portion such that each cable extends along the shaft assembly, and the cables are arranged so as to be substantially incompressible along their respective length for maintaining the constant spacing between the drive portion and the coupling portion.
5. The opening/closing structure for the automatic umbrella as claimed in claim 1, wherein the deforming portion is plural cables equidistantly arranged between the drive portion and the coupling portion, wherein two ends of each cable are joined with the drive portion and the coupling portion such that each cable extends along the shaft assembly, and the cables are arranged so as to be substantially incompressible along their respective length for maintaining the constant spacing between the drive portion and the coupling portion.
6. The opening/closing structure for the automatic umbrella as claimed in claim 1, wherein the frame including a plurality of ribs and plural auxiliary stretchers; a first end of each rib is connected with the notch, and a second end of each rib is a free segment; a first end of each auxiliary stretcher is coupled with the second runner, and a second end of each auxiliary stretcher is joined with each rib.
7. The opening/closing structure for the automatic umbrella as claimed in claim 1, wherein the first tube has a protective sleeve covered on a lower end thereof; and a buffer pad is defined between the second runner and the first runner.
8. The opening/closing structure for the automatic umbrella as claimed in claim 2, wherein the first tube has a limiting member fixed thereon to limit the second runner to move above the limiting member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2878310A CA2878310C (en) | 2014-09-17 | 2014-09-17 | Opening/closing structure for an automatic umbrella |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2878310A CA2878310C (en) | 2014-09-17 | 2014-09-17 | Opening/closing structure for an automatic umbrella |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2878310A1 CA2878310A1 (en) | 2016-03-17 |
| CA2878310C true CA2878310C (en) | 2017-04-18 |
Family
ID=55521930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2878310A Active CA2878310C (en) | 2014-09-17 | 2014-09-17 | Opening/closing structure for an automatic umbrella |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2878310C (en) |
-
2014
- 2014-09-17 CA CA2878310A patent/CA2878310C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA2878310A1 (en) | 2016-03-17 |
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