US20070295850A1 - Automatically lockable cable rewinding structure - Google Patents
Automatically lockable cable rewinding structure Download PDFInfo
- Publication number
- US20070295850A1 US20070295850A1 US11/653,998 US65399807A US2007295850A1 US 20070295850 A1 US20070295850 A1 US 20070295850A1 US 65399807 A US65399807 A US 65399807A US 2007295850 A1 US2007295850 A1 US 2007295850A1
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- United States
- Prior art keywords
- cable
- working member
- rewinding structure
- rolling element
- limiting recess
- Prior art date
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- Abandoned
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- 238000005096 rolling process Methods 0.000 claims abstract description 67
- 230000007704 transition Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 description 17
- 230000002411 adverse Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
- B65H75/4418—Arrangements for stopping winding or unwinding; Arrangements for releasing the stop means
- B65H75/4428—Arrangements for stopping winding or unwinding; Arrangements for releasing the stop means acting on the reel or on a reel blocking mechanism
- B65H75/4434—Arrangements for stopping winding or unwinding; Arrangements for releasing the stop means acting on the reel or on a reel blocking mechanism actuated by pulling on or imparting an inclination to the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/40—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable
- B65H75/406—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable hand-held during use
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
- B65H75/4402—Guiding arrangements to control paying-out and re-storing of the material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G11/00—Arrangements of electric cables or lines between relatively-movable parts
- H02G11/02—Arrangements of electric cables or lines between relatively-movable parts using take-up reel or drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/34—Handled filamentary material electric cords or electric power cables
Definitions
- the present invention relates to an automatically lockable cable rewinding structure, and more particularly to a cable rewinding structure that enables a cable wound therein to be smoothly pulled out and locked in place and smoothly rewound from a locked state simply by pulling and releasing the cable.
- Taiwanese New Utility Model Patent No. 414413 published on Dec. 1, 2000 discloses a cable rewinding box, which includes an upper cover, a lower cover, a rotating base, a rotating disc, a constant force spring, and a fixing shaft.
- the constant force spring With the constant force spring, the cable pulled out of the rewinding case may be automatically rewound.
- the constant force spring may provide a relatively stable contractile tension, and can therefore protects the cable against damage and shortened usable life caused by exceeded tension. Since the constant force spring and the rotating disc are provided at different axial locations, the cable rewinding box may have a reduced overall height to enable convenient carrying thereof.
- the one-way cable rewinding structure includes a ball rolling in a guide path, and a spiral spring, so as to enable the function of pulling and rewinding a cable wound in the rewinding structure.
- a primary object of the present invention is to provide a cable rewinding structure that enables a cable wound therein to be smoothly pulled out and locked in place, and smoothly rewound from a locked state simply by pulling and releasing the cable.
- Another object of the present invention is to provide a cable rewinding structure that includes a limiting recess with more than one slit, so that the limiting recess is able to interact with a rolling element in the cable rewinding structure.
- a further object of the present invention is to provide a cable rewinding structure that enables a rolling element to roll in a guide path without causing easy wearing of the guide path.
- a still further object of the present invention is to provide a cable rewinding structure, in which a guide path and a limiting recess thereof may be provided either on a lower case and a working member, respectively; or on the working member and the lower case, respectively.
- a still further object of the present invention is to provide a cable rewinding structure that has simple structure.
- a still further object of the present invention is to provide a cable rewinding structure, the operation of which would not cause any adverse influence on the usable life of the cable wound therein.
- the present invention provides an automatically lockable cable rewinding structure that includes an upper case provided with a first locating element; a working member provided with a second locating element, and a guide path for a rolling element to move therein; and a lower case provided on a bottom with a limiting recess.
- a length of cable is wound around the working member, and an elastic element is connected at inner and outer ends to the first and the second locating element.
- the limiting recess is formed at radially inner and outer ends with transverse inner and outer slits, respectively, and between the inner and the outer slit with a longitudinal central slit, so that the rolling element is able to stably roll to and fro in the limiting recess along the central slit.
- the limiting recess and the guide path may be provided on the working member and the lower case, respectively.
- FIG. 1 is an exploded perspective view of an automatically lockable cable rewinding structure according to a first embodiment of the present invention in an upside-down position;
- FIG. 2 is an exploded perspective view of the automatically lockable cable rewinding structure of FIG. 1 in a normal position
- FIG. 3 is an assembled view of FIG. 1 ;
- FIGS. 4A to 4C show the internal operation of the automatically lockable cable rewinding structure in the first embodiment when a cable is pulled out of the structure;
- FIGS. 4D to 4E show the locking operation in the automatically lockable cable rewinding structure in the first embodiment when the outward pulled cable is released;
- FIGS. 4F to 4G show the internal operation of the automatically lockable cable rewinding structure in the first embodiment when the released cable is rewound;
- FIG. 5 is an exploded perspective view of an automatically lockable cable rewinding structure according to a second embodiment of the present invention in an upside-down position;
- FIG. 6 is an exploded perspective view of the automatically lockable cable rewinding structure of FIG. 5 in a normal position
- FIG. 7 is an exploded perspective view of an automatically lockable cable rewinding structure according to a third embodiment of the present invention in an upside-down position;
- FIG. 8 is an exploded perspective view of the automatically lockable cable rewinding structure of FIG. 7 in a normal position
- FIG. 9 is an assembled view of FIG. 8 ;
- FIGS. 10A to 10C show the internal operation of the automatically lockable cable rewinding structure in the third embodiment when a cable is pulled out of the structure;
- FIGS. 10D to 10E show the locking operation in the automatically lockable cable rewinding structure in the third embodiment when the outward pulled cable is released;
- FIGS. 10F to 10G show the internal operation of the automatically lockable cable rewinding structure in the third embodiment when the released cable is rewound;
- FIG. 11 is an exploded perspective view of an automatically lockable cable rewinding structure according to a fourth embodiment of the present invention in a normal position.
- FIG. 12 is an exploded perspective view of the automatically lockable cable rewinding structure of FIG. 11 in an upside-down position.
- FIGS. 1 and 2 are exploded perspective views of an automatically lockable cable rewinding structure according to a first embodiment of the present invention in an upside-down and a normal position, respectively; and to FIG. 3 that is an assembled view of FIG. 1 .
- the automatically lockable cable rewinding structure in the first embodiment includes an upper case 11 , a first elastic element 12 , a rolling element 14 , a length of cable 18 , a working member 15 , and a lower case 16 .
- the upper case 11 is provided on an inner side with an axially inward projected first locating element 111
- the lower case 16 is provided on an inner side with a guide path 161 , along which the rolling element 14 moves.
- the guide path 161 is divided into a locking section 161 a, an inner path section 161 b, an outer path section 161 c, and a plurality of transition sections 161 d located at predetermined positions between the inner path section 161 b and the outer path section 161 c.
- the locking section 161 a is adjacent to a beginning of the inner path section 161 b.
- the working member 15 is provided on a peripheral wall at a predetermined position with a second locating element 151 , and on a bottom at a predetermined position with a radially extended limiting recess 152 .
- the first elastic element 12 is fixedly connected at an outer end to the second locating element 151 on the working member 15 and at an inner end to the first locating element 111 on the upper case 11 .
- the limiting recess 152 is provided at radially inner and outer ends with transverse inner and outer slits 152 a, 152 c, respectively, and between the inner and outer ends with a longitudinal central slit 152 b, so that the rolling element 14 may stably roll to and fro in the limiting recess 152 along the central slit 152 b.
- the rolling element 14 When the rolling element 14 rolls in the guide path 161 on the lower case 16 , it upward presses against the limiting recess 152 at the same time. At this point, portions of the limiting recess 152 located at two opposite sides of the central slit 152 b produce two angular reaction forces that are applied to the rolling element 14 in two different directions, and the rolling element 14 is forced downward to press against the guide path 161 on the lower case 16 . As a result, the rolling element 14 is able to move regularly.
- the rolling element 14 is restricted to roll to and fro only in the limiting recess 152 , and the above-mentioned two angular reaction forces in two different directions may automatically change with a curvature of the guide path 161 to ensure that the rolling element 14 is able to stably move only between the limiting recess 152 and the guide path 161 .
- the inner and outer slits 152 a, 152 c together determine an extent by which the two angular reaction forces may be produced, and an extent by which the rolling element 14 may be pressed against the limiting recess 152 .
- the inner and outer slits 152 a, 152 c allow the portions of the limiting recess 152 at two opposite sides of the central slit 152 b to incline by an angle, which is sufficient to buffer the action force applied by the guide path 161 to the rolling element 14 without allowing the rolling element 14 to separate from the guide path 161 . That is, the inclination of the portions of the limiting recess 152 at two opposite sides of the central slit 152 b is controlled by the inner and the outer slit 152 a, 152 c.
- the reaction forces produced by the portions of the limiting recess 152 at two sides of the central slit 152 b are of an elastic force. Therefore, the rolling element 14 rolling in the guide path 161 does not cause wearing of the guide path 161 , but produces intermittent resistance. That is, the action force applied to the rolling element 14 automatically changes with the movement of the rolling element 14 when the same is in the transition sections 161 d.
- the automatically lockable cable rewinding structure according to the first embodiment of the present invention is able to successfully lock or rewind the cable 18 through the following operating procedures.
- the cable 18 can be pulled out of the assembled upper and lower cases 11 , 16 in two opposite directions.
- the working member 15 is caused to turn counterclockwise, and the rolling element 14 is caused to move in the inner path section 161 b.
- FIGS. 1 , 2 , and 4 F Please refer to FIGS. 1 , 2 , and 4 F at the same time.
- the working member 15 is caused to turn counterclockwise again, and the rolling element 14 is caused to move from the locking section 161 a through the transition sections 161 d into the inner path section 161 b.
- the limiting recess 152 at the bottom of the working member 15 functions to restrict the rolling element 14 to smoothly move in the guide path 161 .
- FIGS. 5 and 6 are exploded perspective views of an automatically lockable cable rewinding structure according to a second embodiment of the present invention in an upside-down and a normal position, respectively.
- the automatically lockable cable rewinding structure in the second embodiment includes an upper case 21 , a first elastic element 22 , a rolling element 24 , a length of cable 28 , a working member 25 , and a lower case 26 .
- the upper case 21 is provided on an inner side with an axially inward projected first locating element 211 .
- the lower case 26 is provided on a bottom at a predetermined position with a radially extended limiting recess 262 .
- the limiting recess 262 is provided at radially outer and inner ends with transverse outer and inner slits 262 a, 262 c, respectively, and between the outer and inner ends with a longitudinal central slit 262 b, so that the rolling element 24 may stably roll to and fro in the limiting recess 262 along the central slit 262 b.
- the working member 25 is provided on a peripheral wall with a second locating element 251 , and on a bottom with a guide path 252 , along which the rolling element 24 moves.
- the first elastic element 22 is fixedly connected at an outer end to the second locating element 251 on the working member 25 and at an inner end to the first locating element 211 on the upper case 21 .
- the guide path 252 is divided into a locking section 252 a, an inner path section 252 b, an outer path section 252 c, and a plurality of transition sections 252 d located at predetermined positions between the inner path section 252 b and the outer path section 252 c.
- the locking section 252 a is adjacent to a beginning of the inner path section 252 b.
- the automatically lockable cable rewinding structure in the second embodiment of the present invention is structurally similar to the first embodiment, except that the limiting recess is provided on the lower case instead of the working member, and the guide path is provided on the working member instead of the lower case. Meanwhile, the second embodiment operates in the same procedures as that in a third embodiment of the present invention, which will be described in details below, except that the cable 28 is pulled out in two directions.
- FIGS. 7 and 8 are exploded perspective views of an automatically lockable cable rewinding structure according to a third embodiment of the present invention in an upside-down and a normal position, respectively; and to FIG. 9 that is an assembled view of FIG. 8 .
- the automatically lockable cable rewinding structure in the third embodiment includes an upper case 31 , a first elastic element 32 , a rolling element 34 , a length of cable 38 , a working member 35 , and a lower case 36 .
- the third embodiment is structurally similar to the second embodiment, except that the cable 38 can be pulled out of the rewinding structure only in one direction instead of two opposite directions.
- the upper case 31 is provided on an inner side with an axially inward projected first locating element 311 .
- the lower case 36 is provided on a bottom at a predetermined position with a radially extended limiting recess 362 .
- the limiting recess 362 is provided at radially outer and inner ends with transverse outer and inner slits 362 a, 362 c, respectively, and between the outer and the inner end with a longitudinal central slit 362 b, so that the rolling element 34 may stably roll to and fro in the limiting recess 362 along the central slit 362 b.
- the working member 35 is provided on a top at a predetermined position with a second locating element 351 , and on a bottom with a guide path 352 , along which the rolling element 34 moves.
- the first elastic element 32 is fixedly connected at an outer end to the second locating element 351 on the working member 35 and at an inner end to the first locating element 311 on the upper case 31 .
- the guide path 352 is divided into a locking section 352 a, an inner path section 352 b, an outer path section 352 c, and a plurality of transition sections 352 d located at predetermined positions between the inner path section 352 b and the outer path section 352 c.
- the locking section 352 a is adjacent to a beginning of the inner path section 352 b.
- the automatically lockable cable rewinding structure according to the third embodiment of the present invention is able to successfully lock or rewind the cable 38 through the following operating procedures.
- FIGS. 11 and 12 are exploded perspective views of an automatically lockable cable rewinding structure according to a fourth embodiment of the present invention in a normal and an upside-down position, respectively.
- the automatically lockable cable rewinding structure in the fourth embodiment includes an upper case 41 , a first elastic element 42 , a rolling element 44 , a length of cable 48 , a working member 45 , and a lower case 46 .
- the upper case 41 is provided on an inner side with an axially inward projected first locating element 411
- the lower case 46 is provided on an inner side with a guide path 461 , along which the rolling element 44 moves.
- the guide path 461 is divided into a locking section 461 a, an inner path section 461 b, an outer path section 461 c, and a plurality of transition sections 461 d located at predetermined positions between the inner path section 461 b and the outer path section 461 c.
- the locking section 461 a is adjacent to a beginning of the inner path section 461 b.
- the working member 45 is provided on a top at a predetermined position with a second locating element 451 , and on a bottom at a predetermined position with a radially extended limiting recess 452 .
- the first elastic element 42 is fixedly connected at an outer end to the second locating element 451 on the working member 45 and at an inner end to the first locating element 411 on the upper case 41 .
- the limiting recess 452 is provided at radially outer and inner ends with transverse outer and inner slits 452 a, 452 c, respectively, and between the inner and outer ends with a longitudinal central slit 452 b, so that the rolling element 44 may stably roll to and fro in the limiting recess 452 along the central slit 452 b.
- the automatically lockable cable rewinding structure in the fourth embodiment of the present invention is generally structurally similar to the third embodiment, except that the guide path is provided on the lower case instead of the working member, and the limiting recess is provided on the working member instead of the lower case. Meanwhile, the fourth embodiment operates in the same procedures as that in the first embodiment of the present invention, except that the cable 48 is pulled out in only one direction.
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Abstract
An automatically lockable cable rewinding structure includes an upper case having a first locating element; a lower case provided with a limiting recess; and a working member located between the two cases, and provided with a second locating element and a guide path for a rolling element to move therein. A length of cable is wound around the working member, and an elastic element is connected at two ends to the first and second locating elements. The limiting recess is formed at radially inner and outer ends with transverse inner and outer slits, respectively, and between the inner and the outer end with a longitudinal central slit, so that the rolling element is able to stably roll to and fro in the limiting recess along the central slit. Alternatively, the limiting recess and the guide path may be provided on the working member and the lower case, respectively.
Description
- The present invention relates to an automatically lockable cable rewinding structure, and more particularly to a cable rewinding structure that enables a cable wound therein to be smoothly pulled out and locked in place and smoothly rewound from a locked state simply by pulling and releasing the cable.
- Taiwanese New Utility Model Patent No. 414413 published on Dec. 1, 2000 discloses a cable rewinding box, which includes an upper cover, a lower cover, a rotating base, a rotating disc, a constant force spring, and a fixing shaft. With the constant force spring, the cable pulled out of the rewinding case may be automatically rewound. Generally speaking, the constant force spring may provide a relatively stable contractile tension, and can therefore protects the cable against damage and shortened usable life caused by exceeded tension. Since the constant force spring and the rotating disc are provided at different axial locations, the cable rewinding box may have a reduced overall height to enable convenient carrying thereof.
- In addition to a two-way cable rewinding structure in which the cable may be pulled out in two opposite directions at the same time, there is also a one-way cable rewinding structure in which the cable can be pulled out in only one direction. The one-way cable rewinding structure includes a ball rolling in a guide path, and a spiral spring, so as to enable the function of pulling and rewinding a cable wound in the rewinding structure.
- The following disadvantages are found in the above-mentioned conventional cable rewinding structures:
-
- (1) A clearance must exist-between the ball and a limiting recess. Due to the clearance, the ball is not able to regularly move in the limiting recess and tends to skid off a locking section in the guide path.
- (2) When the ball fails to regularly and smoothly move in the guide path, the spiral spring tends to gradually become fatigued in its elastic strength, and the usable life of the cable is adversely affected.
- (3) When the ball fails to regularly and smoothly move in the guide path, the guide path tends to become worn easily, and the cable could not be smoothly rewound to adversely affect the usable life thereof.
- It is therefore tried by the inventor to develop an automatically lockable cable rewinding structure to overcome the above-mentioned problems existed in the prior art.
- A primary object of the present invention is to provide a cable rewinding structure that enables a cable wound therein to be smoothly pulled out and locked in place, and smoothly rewound from a locked state simply by pulling and releasing the cable.
- Another object of the present invention is to provide a cable rewinding structure that includes a limiting recess with more than one slit, so that the limiting recess is able to interact with a rolling element in the cable rewinding structure.
- A further object of the present invention is to provide a cable rewinding structure that enables a rolling element to roll in a guide path without causing easy wearing of the guide path.
- A still further object of the present invention is to provide a cable rewinding structure, in which a guide path and a limiting recess thereof may be provided either on a lower case and a working member, respectively; or on the working member and the lower case, respectively.
- A still further object of the present invention is to provide a cable rewinding structure that has simple structure.
- A still further object of the present invention is to provide a cable rewinding structure, the operation of which would not cause any adverse influence on the usable life of the cable wound therein.
- To achieve the above and other objects, the present invention provides an automatically lockable cable rewinding structure that includes an upper case provided with a first locating element; a working member provided with a second locating element, and a guide path for a rolling element to move therein; and a lower case provided on a bottom with a limiting recess. A length of cable is wound around the working member, and an elastic element is connected at inner and outer ends to the first and the second locating element. The limiting recess is formed at radially inner and outer ends with transverse inner and outer slits, respectively, and between the inner and the outer slit with a longitudinal central slit, so that the rolling element is able to stably roll to and fro in the limiting recess along the central slit. Alternatively, the limiting recess and the guide path may be provided on the working member and the lower case, respectively. With the cable rewinding structure of the present invention, cables may be conveniently and orderly collected and stored.
- The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein
-
FIG. 1 is an exploded perspective view of an automatically lockable cable rewinding structure according to a first embodiment of the present invention in an upside-down position; -
FIG. 2 is an exploded perspective view of the automatically lockable cable rewinding structure ofFIG. 1 in a normal position; -
FIG. 3 is an assembled view ofFIG. 1 ; -
FIGS. 4A to 4C show the internal operation of the automatically lockable cable rewinding structure in the first embodiment when a cable is pulled out of the structure; -
FIGS. 4D to 4E show the locking operation in the automatically lockable cable rewinding structure in the first embodiment when the outward pulled cable is released; -
FIGS. 4F to 4G show the internal operation of the automatically lockable cable rewinding structure in the first embodiment when the released cable is rewound; -
FIG. 5 is an exploded perspective view of an automatically lockable cable rewinding structure according to a second embodiment of the present invention in an upside-down position; -
FIG. 6 is an exploded perspective view of the automatically lockable cable rewinding structure ofFIG. 5 in a normal position; -
FIG. 7 is an exploded perspective view of an automatically lockable cable rewinding structure according to a third embodiment of the present invention in an upside-down position; -
FIG. 8 is an exploded perspective view of the automatically lockable cable rewinding structure ofFIG. 7 in a normal position; -
FIG. 9 is an assembled view ofFIG. 8 ; -
FIGS. 10A to 10C show the internal operation of the automatically lockable cable rewinding structure in the third embodiment when a cable is pulled out of the structure; -
FIGS. 10D to 10E show the locking operation in the automatically lockable cable rewinding structure in the third embodiment when the outward pulled cable is released; -
FIGS. 10F to 10G show the internal operation of the automatically lockable cable rewinding structure in the third embodiment when the released cable is rewound; -
FIG. 11 is an exploded perspective view of an automatically lockable cable rewinding structure according to a fourth embodiment of the present invention in a normal position; and -
FIG. 12 is an exploded perspective view of the automatically lockable cable rewinding structure ofFIG. 11 in an upside-down position. - Please refer to
FIGS. 1 and 2 that are exploded perspective views of an automatically lockable cable rewinding structure according to a first embodiment of the present invention in an upside-down and a normal position, respectively; and toFIG. 3 that is an assembled view ofFIG. 1 . As shown, the automatically lockable cable rewinding structure in the first embodiment includes anupper case 11, a firstelastic element 12, arolling element 14, a length ofcable 18, a workingmember 15, and alower case 16. - The
upper case 11 is provided on an inner side with an axially inward projected first locatingelement 111, and thelower case 16 is provided on an inner side with aguide path 161, along which therolling element 14 moves. Theguide path 161 is divided into alocking section 161 a, aninner path section 161 b, anouter path section 161 c, and a plurality oftransition sections 161 d located at predetermined positions between theinner path section 161 b and theouter path section 161c. Thelocking section 161 a is adjacent to a beginning of theinner path section 161 b. - The working
member 15 is provided on a peripheral wall at a predetermined position with a second locatingelement 151, and on a bottom at a predetermined position with a radially extendedlimiting recess 152. The firstelastic element 12 is fixedly connected at an outer end to the second locatingelement 151 on the workingmember 15 and at an inner end to the first locatingelement 111 on theupper case 11. Thelimiting recess 152 is provided at radially inner and outer ends with transverse inner andouter slits central slit 152 b, so that therolling element 14 may stably roll to and fro in thelimiting recess 152 along thecentral slit 152 b. - Please refer to
FIGS. 2 and 3 . To assemble the automatically lockable cable rewinding structure of the first embodiment, wind thecable 18 around the peripheral wall of the workingmember 15, such that thecable 18 may be pulled out of the rewinding structure in two opposite directions, and position therolling element 14 in thelimiting recess 152. When the workingmember 15 is connected to thelower case 16, make sure therolling element 14 is seated in theguide path 161. Finally, fixedly connect theupper case 11 to thelower case 16. The inner, central, andouter slits element 14 rolls in theguide path 161 on thelower case 16, it upward presses against the limitingrecess 152 at the same time. At this point, portions of the limitingrecess 152 located at two opposite sides of thecentral slit 152 b produce two angular reaction forces that are applied to the rollingelement 14 in two different directions, and the rollingelement 14 is forced downward to press against theguide path 161 on thelower case 16. As a result, the rollingelement 14 is able to move regularly. That is, with the threeslits 152 a, b, and c, the rollingelement 14 is restricted to roll to and fro only in the limitingrecess 152, and the above-mentioned two angular reaction forces in two different directions may automatically change with a curvature of theguide path 161 to ensure that the rollingelement 14 is able to stably move only between the limitingrecess 152 and theguide path 161. Meanwhile, the inner andouter slits element 14 may be pressed against the limitingrecess 152. In other words, at the instant the rollingelement 14 passes through thetransition sections 161 d, moves into thelocking section 161 a, or moves out of thelocking section 161 a, the inner andouter slits recess 152 at two opposite sides of thecentral slit 152 b to incline by an angle, which is sufficient to buffer the action force applied by theguide path 161 to the rollingelement 14 without allowing the rollingelement 14 to separate from theguide path 161. That is, the inclination of the portions of the limitingrecess 152 at two opposite sides of thecentral slit 152 b is controlled by the inner and theouter slit - Moreover, the reaction forces produced by the portions of the limiting
recess 152 at two sides of thecentral slit 152 b are of an elastic force. Therefore, the rollingelement 14 rolling in theguide path 161 does not cause wearing of theguide path 161, but produces intermittent resistance. That is, the action force applied to the rollingelement 14 automatically changes with the movement of the rollingelement 14 when the same is in thetransition sections 161 d. - With the above arrangements, the automatically lockable cable rewinding structure according to the first embodiment of the present invention is able to successfully lock or rewind the
cable 18 through the following operating procedures. - (a) Pull Procedure 1:
-
- Please refer to
FIGS. 1 , 2, and 4A at the same time.
- Please refer to
- It is noted the
cable 18 can be pulled out of the assembled upper andlower cases cable 18 is pulled out in two opposite directions, the workingmember 15 is caused to turn counterclockwise, and the rollingelement 14 is caused to move in theinner path section 161 b. - (b) Pull Procedure 2:
-
- Please refer to
FIGS. 1 , 2, and 4B at the same time. When thecable 18 is kept pulling out to turn the workingmember 15 counterclockwise, the rollingelement 14 would move from theinner path section 161 b through thetransition sections 161 d into theouter path section 161 c. At this point, the limitingrecess 152 at the bottom of the workingmember 15 functions to restrict the rollingelement 14 to smoothly move in theguide path 161. - (c) Pull Procedure 3:
- Please refer to
FIGS. 1 , 2, and 4C at the same time. When thecable 18 is kept pulling out to turn the workingmember 15 counterclockwise, the rollingelement 14 would move in theouter path section 161 c.
- Please refer to
- (d) Lock Procedure 1:
-
- Please refer to
FIGS. 1 , 2, and 4D at the same time. When thecable 18 being pulled out in two opposite directions is released, the workingmember 15 is guided by the firstelastic element 12 to turn clockwise, causing the rollingelement 14 to move from theouter path section 161 c through thetransition sections 161 d. At this point, the limitingrecess 152 at the bottom of the workingmember 15 functions to restrict the rollingelement 14 to smoothly move in theguide path 161 into thelocking section 161 a.
- Please refer to
- (e) Lock Procedure 2:
-
- Please refer to
FIGS. 1 , 2, and 4E at the same time. When thecable 18 being pulled out in two directions is released, the rollingelement 14 is affected by an elastic force of the firstelastic element 12 to stop in thelocking section 161 a.
- Please refer to
- (f) Rewind Procedure:
- Please refer to
FIGS. 1 , 2, and 4F at the same time. When the releasedcable 18 is slightly pulled out in two opposite directions, the workingmember 15 is caused to turn counterclockwise again, and the rollingelement 14 is caused to move from thelocking section 161 a through thetransition sections 161 d into theinner path section 161 b. At this point, the limitingrecess 152 at the bottom of the workingmember 15 functions to restrict the rollingelement 14 to smoothly move in theguide path 161. - (g) Completion of Rewind Procedure:
-
- Please refer to
FIGS. 1 , 2, and 4G at the same time. When thecable 18 being pulled out in two directions is released again, the workingmember 15 is caused by the elastic force of the firstelastic element 12 to turn clockwise again, and the rollingelement 14 is brought to smoothly move in theinner path section 161 b again.
- Please refer to
- Please refer to
FIGS. 5 and 6 that are exploded perspective views of an automatically lockable cable rewinding structure according to a second embodiment of the present invention in an upside-down and a normal position, respectively. As shown, the automatically lockable cable rewinding structure in the second embodiment includes anupper case 21, a firstelastic element 22, a rollingelement 24, a length ofcable 28, a workingmember 25, and alower case 26. - The
upper case 21 is provided on an inner side with an axially inward projected first locatingelement 211. As can be clearly seen fromFIGS. 5 and 6 , thelower case 26 is provided on a bottom at a predetermined position with a radially extended limitingrecess 262. The limitingrecess 262 is provided at radially outer and inner ends with transverse outer andinner slits 262 a, 262 c, respectively, and between the outer and inner ends with a longitudinal central slit 262 b, so that the rollingelement 24 may stably roll to and fro in the limitingrecess 262 along the central slit 262 b. - As can be seen from
FIG. 5 , the workingmember 25 is provided on a peripheral wall with asecond locating element 251, and on a bottom with aguide path 252, along which the rollingelement 24 moves. The firstelastic element 22 is fixedly connected at an outer end to thesecond locating element 251 on the workingmember 25 and at an inner end to thefirst locating element 211 on theupper case 21. Theguide path 252 is divided into alocking section 252 a, aninner path section 252 b, anouter path section 252 c, and a plurality oftransition sections 252 d located at predetermined positions between theinner path section 252 b and theouter path section 252 c. Thelocking section 252 a is adjacent to a beginning of theinner path section 252 b. - The automatically lockable cable rewinding structure in the second embodiment of the present invention is structurally similar to the first embodiment, except that the limiting recess is provided on the lower case instead of the working member, and the guide path is provided on the working member instead of the lower case. Meanwhile, the second embodiment operates in the same procedures as that in a third embodiment of the present invention, which will be described in details below, except that the
cable 28 is pulled out in two directions. - Please refer to
FIGS. 7 and 8 that are exploded perspective views of an automatically lockable cable rewinding structure according to a third embodiment of the present invention in an upside-down and a normal position, respectively; and toFIG. 9 that is an assembled view ofFIG. 8 . As shown, the automatically lockable cable rewinding structure in the third embodiment includes anupper case 31, a firstelastic element 32, a rollingelement 34, a length ofcable 38, a workingmember 35, and alower case 36. Generally speaking, the third embodiment is structurally similar to the second embodiment, except that thecable 38 can be pulled out of the rewinding structure only in one direction instead of two opposite directions. - The
upper case 31 is provided on an inner side with an axially inward projected first locatingelement 311. As can be clearly seen fromFIGS. 7 and 8 , thelower case 36 is provided on a bottom at a predetermined position with a radially extended limitingrecess 362. The limitingrecess 362 is provided at radially outer and inner ends with transverse outer andinner slits central slit 362 b, so that the rollingelement 34 may stably roll to and fro in the limitingrecess 362 along thecentral slit 362 b. - As can be seen from
FIG. 7 , the workingmember 35 is provided on a top at a predetermined position with asecond locating element 351, and on a bottom with aguide path 352, along which the rollingelement 34 moves. The firstelastic element 32 is fixedly connected at an outer end to thesecond locating element 351 on the workingmember 35 and at an inner end to thefirst locating element 311 on theupper case 31. Theguide path 352 is divided into alocking section 352 a, aninner path section 352 b, anouter path section 352 c, and a plurality oftransition sections 352 d located at predetermined positions between theinner path section 352 b and theouter path section 352 c. Thelocking section 352 a is adjacent to a beginning of theinner path section 352 b. - Please refer to
FIGS. 8 and 9 . To assemble the automatically lockable cable rewinding structure of the third embodiment, wind thecable 38 around the top of the workingmember 35, such that thecable 38 can be pulled out of the rewinding structure in only one direction, and position the rollingelement 34 in the limitingrecess 362. When the workingmember 35 is connected to thelower case 36, make sure the rollingelement 34 is seated in theguide path 352 at the bottom of the workingmember 35. Finally, fixedly connect theupper case 31 to thelower case 36. - With the above arrangements, the automatically lockable cable rewinding structure according to the third embodiment of the present invention is able to successfully lock or rewind the
cable 38 through the following operating procedures. - (a) Pull Procedure 1:
-
- Please refer to
FIGS. 7 , 8, and 10A at the same time. It is noted thecable 38 can be pulled out of the assembled upper andlower cases cable 38 is pulled out at an end thereof, the workingmember 35 is caused to turn counterclockwise, and the rollingelement 34 is caused to move in theinner path section 352 b.
- Please refer to
- (b) Pull Procedure 2:
-
- Please refer to
FIGS. 7 , 8, and 10B at the same time. When thecable 38 is kept pulling out in the same direction to turn the workingmember 35 counterclockwise, the rollingelement 34 would move from theinner path section 352 b through thetransition sections 352 d into theouter path section 352 c. At this point, the limitingrecess 362 at the bottom of thelower case 36 functions to restrict the rollingelement 34 to smoothly move in theguide path 352.
- Please refer to
- (c) Pull Procedure 3:
-
- Please refer to
FIGS. 7 , 8, and 10C at the same time. When thecable 38 is kept pulling out in the same direction to turn the workingmember 35 counterclockwise, the rollingelement 34 would move in theouter path section 352 c.
- Please refer to
- (d) Lock Procedure 1:
-
- Please refer to
FIGS. 7 , 8, and 10D at the same time. When thecable 38 being pulled out in the same direction is released, the workingmember 35 is caused by the firstelastic element 32 to turn clockwise, and the rollingelement 34 is caused to move from theouter path section 352 c through thetransition sections 352 d. At this point, the limitingrecess 362 at the bottom of thelower case 36 functions to restrict the rollingelement 34 to smoothly move in theguide path 352 to thelocking section 352 a.
- Please refer to
- (e) Lock Procedure 2:
-
- Please refer to
FIGS. 7 , 8, and 10E at the same time. When thecable 38 being pulled out in the same direction is released, the rollingelement 34 is affected by an elastic force of the firstelastic element 32 to stop in thelocking section 352 a.
- Please refer to
- (f) Rewind Procedure:
-
- Please refer to
FIGS. 7 , 8, and 10F at the same time. When the releasedcable 38 is slightly pulled out in the same direction again, the workingmember 35 is caused to turn counterclockwise again, and the rollingelement 34 is caused to move from thelocking section 352 a through thetransition sections 352 d into theinner path section 352 b. At this point, the limitingrecess 362 at the bottom of thelower case 36 functions to restrict the rollingelement 34 to smoothly move in theguide path 352.
- Please refer to
- (g) Completion of Rewind Procedure:
-
- Please refer to
FIGS. 7 , 8, and 10G at the same time. When thecable 38 being pulled out in the same direction is released again, the workingmember 35 is caused by the elastic force of the firstelastic element 32 to turn clockwise again, and the rollingelement 34 is brought to smoothly move in theinner path section 352 b again.
- Please refer to
- Please refer to
FIGS. 11 and 12 that are exploded perspective views of an automatically lockable cable rewinding structure according to a fourth embodiment of the present invention in a normal and an upside-down position, respectively. As shown, the automatically lockable cable rewinding structure in the fourth embodiment includes anupper case 41, a firstelastic element 42, a rollingelement 44, a length ofcable 48, a workingmember 45, and alower case 46. - The
upper case 41 is provided on an inner side with an axially inward projected first locatingelement 411, and thelower case 46 is provided on an inner side with aguide path 461, along which the rollingelement 44 moves. Theguide path 461 is divided into alocking section 461 a, aninner path section 461 b, anouter path section 461 c, and a plurality oftransition sections 461 d located at predetermined positions between theinner path section 461 b and theouter path section 461 c. Thelocking section 461 a is adjacent to a beginning of theinner path section 461 b. - The working
member 45 is provided on a top at a predetermined position with asecond locating element 451, and on a bottom at a predetermined position with a radially extended limitingrecess 452. The firstelastic element 42 is fixedly connected at an outer end to thesecond locating element 451 on the workingmember 45 and at an inner end to thefirst locating element 411 on theupper case 41. The limitingrecess 452 is provided at radially outer and inner ends with transverse outer andinner slits central slit 452 b, so that the rollingelement 44 may stably roll to and fro in the limitingrecess 452 along thecentral slit 452 b. - The automatically lockable cable rewinding structure in the fourth embodiment of the present invention is generally structurally similar to the third embodiment, except that the guide path is provided on the lower case instead of the working member, and the limiting recess is provided on the working member instead of the lower case. Meanwhile, the fourth embodiment operates in the same procedures as that in the first embodiment of the present invention, except that the
cable 48 is pulled out in only one direction. - The following are some of the advantages and effects of the automatically lockable cable rewinding structure of the present invention, compared with the prior art:
-
- (1) When the rolling element passes through the transition sections, which have a height different from that of the inner and outer path sections, the portions of the limiting recess at two opposite sides of the central slit are automatically inclined by an angle sufficient to provide a buffer effect, so that the rolling element can always smoothly roll through the guide path.
- (2) In some embodiments of the present invention, the guide path is provided on the inner side of the lower case, and the limiting recess is provided on the bottom of the working member to ensure that the rolling element always smoothly moves in the guide path. Since the lower cases for most cable rewinding structures generally have a standardized thickness that is usually not too large, the provision of the limiting recess on the working member to guide the movement of the rolling element as disclosed in the present invention allows the limiting recess to provide better effect than that in the prior art.
- (3) The reaction forces applied by the portions of the limiting recess at two opposite sides of the central slit to the rolling element are of an elastic force, which is helpful in reducing the wearing of the guide path caused by the movement of the rolling element in the guide path.
- (4) The automatically lockable cable rewinding structure of the present invention has simple structure to allow easy manufacture and assembly at reduced labor and material costs. That is, the present invention may be completed without too many complicate machining and assembling procedures.
- The present invention has been described with some preferred embodiments thereof and it is understood that many changes and modifications in the described embodiments can be carried out without departing from the scope and the spirit of the invention that is intended to be limited only by the appended claims.
Claims (8)
1. An automatically lockable cable rewinding structure, comprising an upper case, a working member, and a lower case; the upper case being provided on an inner side with an axially inward extended first locating element; the working member being provided at a predetermined position with a second locating element, and on a bottom with a guide path for a rolling element to move therein; a length of cable being wound around an outer periphery of the working member, and a first elastic element being connected at an inner end to the first locating element on the upper case and at an outer end to the second locating element on the working member; and the lower case being provided on a bottom at a predetermined position with a radially extended limiting recess, which is formed at radially inner and outer ends with transverse inner and outer slits, respectively, and between the inner and the outer end with a longitudinal central slit, so that the rolling element is able to stably roll to and fro in the limiting recess along the central slit.
2. The automatically lockable cable rewinding structure as claimed in claim 1 , wherein the guide path is divided into a locking section, an inner path section, an outer path section, and a plurality of transition sections located at predetermined positions between the inner and the outer path section; and the locking section being located adjacent to a beginning of the inner path section.
3. The automatically lockable cable rewinding structure as claimed in claim 1 , wherein the cable is wound around the working member in such a manner that the cable may be pulled out of the closed upper and lower cases in two opposite directions.
4. The automatically lockable cable rewinding structure as claimed in claim 1 , wherein the cable is wound around the working member in such a manner that the cable may be pulled out of the closed upper and lower cases in only one direction.
5. An automatically lockable cable rewinding structure, comprising an upper case, a working member, and a lower case; the upper case being provided on an inner side with an axially inward extended first locating element; the lower case being provided on an inner side with a guide path for a rolling element to move therein; and the working member being provided at a predetermined position with a second locating element, and on a bottom at a predetermined position with a radially extended limiting recess; a length of cable being wound around an outer periphery of the working member, and a first elastic element being connected at an inner end to the first locating element on the upper case and at an outer end to the second locating element on the working member; and the limiting recess being formed at radially inner and outer ends with transverse inner and outer slits, respectively, and between the inner and the outer end with a longitudinal central slit, so that the rolling element is able to stably roll to and fro in the limiting recess along the central slit.
6. The automatically lockable cable rewinding structure as claimed in claim 5 , wherein the guide path is divided into a locking section, an inner path section, an outer path section, and a plurality of transition sections located at predetermined position between the inner and the outer path section; and the locking section being located adjacent to a beginning of the inner path section.
7. The automatically lockable cable rewinding structure as claimed in claim 5 , wherein the cable is wound around the working member in such a manner that the cable may be pulled out of the closed upper and lower cases in two opposite directions.
8. The automatically lockable cable rewinding structure as claimed in claim 5 , wherein the cable is wound around the working member in such a manner that the cable may be pulled out of the closed upper and lower cases in only one direction.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW095210832 | 2006-06-21 | ||
TW095210832U TWM304830U (en) | 2006-06-21 | 2006-06-21 | Automatic positioning wire collection structure |
Publications (1)
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US20070295850A1 true US20070295850A1 (en) | 2007-12-27 |
Family
ID=37846592
Family Applications (1)
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---|---|---|---|
US11/653,998 Abandoned US20070295850A1 (en) | 2006-06-21 | 2007-01-17 | Automatically lockable cable rewinding structure |
Country Status (5)
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---|---|
US (1) | US20070295850A1 (en) |
JP (1) | JP3133750U (en) |
DE (1) | DE202007000146U1 (en) |
GB (1) | GB2439305B (en) |
TW (1) | TWM304830U (en) |
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Also Published As
Publication number | Publication date |
---|---|
JP3133750U (en) | 2007-07-26 |
GB0700988D0 (en) | 2007-02-28 |
GB2439305A (en) | 2007-12-27 |
DE202007000146U1 (en) | 2007-05-10 |
GB2439305B (en) | 2011-05-11 |
TWM304830U (en) | 2007-01-11 |
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