US3761189A - Device for fixing spring winder means - Google Patents
Device for fixing spring winder means Download PDFInfo
- Publication number
- US3761189A US3761189A US00258541A US3761189DA US3761189A US 3761189 A US3761189 A US 3761189A US 00258541 A US00258541 A US 00258541A US 3761189D A US3761189D A US 3761189DA US 3761189 A US3761189 A US 3761189A
- Authority
- US
- United States
- Prior art keywords
- spring
- winder means
- winding stem
- threaded portion
- coil spring
- 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.)
- Expired - Lifetime
Links
- 238000004804 winding Methods 0.000 claims abstract description 71
- 238000010276 construction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000009747 swallowing Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/02—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/69—Redundant disconnection blocking means
- F16B2200/73—Cam locks or thread locks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/66—Interfitted members with external bridging piece
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/70—Interfitted members
- Y10T403/7075—Interfitted members including discrete retainer
- Y10T403/7077—Interfitted members including discrete retainer for telescoping members
Definitions
- This invention relates to a device for fixing a winder means for springs or the like.
- a key for winding a spring or other means for performing the same function as the key are detachably connected, as by threading, to a spring winding stem attached to the spring, so that the key can freely be connected to or disconnected from the spring winding stem.
- the spring winder means be constructed such that it cannot readily be disconnected from the spring winding stem once it is conpair and disassembling. Loosening of the coil spring should require a considerably high force, so that the winder means is prevented from being inadvertently dislodged or removed by a child.
- FIG. 1 is a plan view, with certain parts being broken away, of the device for fixing spring winder means comprising one embodiment of this invention, showing the spring winder means having the coil spring mounted over it being juxtaposed to the spring winding stem;
- FIG. 2 is a plan view, with certain parts being broken I away, of the device according to this invention, showspring winder means and the spring winding stem may be crushed by crimping it with pliers, or the former may be joined by soldering to the latter. If the spring winder means were firmly secured to the spring winding stern of a toy in this way, it would be impossible to disconnect them till the toy is broken and discarded. Thus, when it is desired to repair the toy, it would be impossible to disassemble it into its component parts.
- This invention has as its object the provision of a device for fixing spring windertmeans comprising a spring winding stem having a threaded portion, a spring winder means having a threaded portion adapted to be threadably connected to the threaded portion of the spring winding stem, and a coil spring adapted to be fitted intimately over the spring winding stem and the spring winder means, threadably connected together, the coil spring comprising convolutions arranged in a direction which is the same as the direction in which the threads formed on the spring winding stem and the spring winder means for threadably connecting them together are wound, so that the spring winder means threadably connected to the spring winding stem can be firmly secured thereto by means of the soil spring and cannot readily be disconnected therefrom by turning the spring winder means in any direction once it is fixed to the spring winding shaft.
- the device according to this invention is very simple in construction and yet positive in performing the operation of firmly securing the spring winder means to the spring winding stem and preventing it from being disconnected.
- the coil spring mounted between the spring winder means and the spring winding stem ensures that the winder means is not disconnected from the winding stem once the former is threadably connected to the latter.
- the spring winder means is not permanently connected to the spring winding stem, but theformer can be disconnected from the latter when desired. That is, if the spring winder means is unscrewed after the coil spring is loosened, the spring winder means can be readily disconnected from the spring winding stem.
- This arrangement facilitates reing the spring winder means having the coil spring mounted over it being threadably connected to the spring winding stem;
- FIG. 3 is a fragmentary plan view, on an enlarged scale, of FIG. 2.
- the spring winder means is a key provided with an internal threaded portion and the spring winding stem is provided with an external threaded portion. It is to be understood that the invention is not limited to this embodiment and that an internal threaded portion may be provided in the spring winding stem and an external threaded portion may be provided in the spring winder means.
- the spring winding stem may be a shaft having one end to which a spring is attached, or may be a spring shaft itself.
- a spring winding stem ll having a spring 4 attached to one end portion threrof is supported by a frame 3 suchas of a toy, and the other end portion of spring winding stem 1 is provided with an external threaded portion 2.
- a spring winder means or key 5 adapted to be connected'to spring winding stem 11 is provided at a forward end portion thereof with an internal threaded portion 6 adapted to threadably engage the external threaded portion 2 of the spring winding stem 1.
- the key 5 is formed on the outer circumferential surface thereof with an offset portion 9 to provide a minor diameter portion 7 at the end portion of key 5 which has an outer diameter substantially the same as the outer diameter of spring winding stem 1.
- a coil spring 8, having convolutions directed in the same direction as the thread of the threaded portion on the key S is lightly force fitted over the minor diameter portion 7 of key 5 at one end portion thereof, and then the key 5 is threadably connected to the spring winding stem 1 so that the other end portion of coil spring 8 is lightly force fitted over the outer circumferential surface of spring winding stem 1 as shown in FIG. 2.
- the coil spring 8 has an inner diameter which is equal to or smaller than the outer diameter of the minor diameter portion of key 5.
- the coil spring 8 may be constructed such that its inner peripheral surface partly engages winding stem 1 and key 5.
- the frictional force imparted to the coil spring 8 when it is force fitted over the spring winding stem 1 in threadably connecting the key 5 to the stem 1 acts to loosen the coil spring 8, thereby enabling the key 5 and stem 1 to be maintained in threadable connection.
- the coil spring 8 is precluded from axial movement by abutment against the offset portion 9 and against the frame 3 to which the spring winding stem 1 is connected, the offset portion 9 having a height which is greater than or equal to the diameter a of a wire constituting the spring
- the offset portion can be provided on the outer circumferential surface of the spring winding shaft 1, not on the outer circumferential surface of the key 5 as aforementioned.
- the portion of the coil spring 8 which extends outwardly beyond the end of the minor diameter portion 7 of key 5 over which the coil spring 8 is force fitted has a length b which is smaller than the length of the external threaded portion 2 of the spring winding stem 1.
- a device for fixing spring winder means comprising a spring winding stern formed with a threaded portion, a spring winder means formed with a threaded portion and adapted to be threadably connected to said spring winding stem, one of said threaded portions being a male threaded stud and the other of said threaded portions being a female threaded socket portion for receiving said threaded stud; and a cylindrical coil spring intimately fitted around non-threaded portions of said spring winding stern and said spring winder means when said stem and said winder means are threadably connected to each other, said coil spring being wound in a direction which is the same as the direction in which the threads of the threaded portions, formed on the spring winding stem and the spring winder means extend for threadably connecting them together.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Abstract
The device firmly secures a spring winder means to a spring winding stem by means of a coil spring intimately fitted over the spring winder means and the spring winding stem threadably connected together. The convolutions of the coil spring are directed in the same direction as the threads formed in the spring winder means and spring winding stem for threadable connection, so that the coil spring is tightened if the spring winder means is turned in a direction in which it is threadably disconnected from the spring winding stem. Thus, the spring winder means is firmly secured to the spring winding shaft through the coil spring and prevented from being dislodged therefrom.
Description
ited States Patent 2 [191 Suzuki 1 Sept. 25, 11973 [54] 325: FOR FIXING SPRING WINDER FOREIGN PATENTS OR APPLICATIONS 1,067,245 1/1954 France 192/81 C [75] Inventor: lkuo Suzuki, Okaya-shi,
Naganmken Japan Primary ExaminerAndrew V Kundrat [73] Assignee: Kabushiki Kaisha Sankyo Seiki Att0rney.l0hn J McGlew et al.
Seisakusho, Nagano-ken, Japan [22] Filed: June 1, 1972 [57] ABSTRACT [21] Appl. No.: 258,541 The device firmly secures a spring winder means to a spring winding stem by means of a coil spring intimately fitted over the spring winder means and the [30] Forelgn Apphcanon Priority Dam spring winding stem threadably connected together. June 8, 1971 Japan 46/47562 The Convolutions f th oil spring are directed in the same direction as the threads formed in the spring 52] 92/82 403/341 403/377 winder means and spring winding stem for threadable [51] lint. C1. lFl6d l/Oll connection, so h h il spring is tightened if the Fleld Of Search 86, p g winder means is turned in a direction in 92/41 12 Isl/.14 2 85/32- itis threadably disconnected from the spring winding 32 24/123 7 7 27 CT stem. Thus, the spring winder means is firmly secured to the spring winding shaft through the coil spring and [56] References cued prevented from being dislodged therefrom.
UNITED STATES PATENTS 3,662,867 5/1972 Kinzbach 192 45 6 Clam, 3 Drawmg Fgures DEVICE FOR FIXING SPRING WINDER MEANS Background of the Invention This invention relates to a device for fixing a winder means for springs or the like.
Generally, a key for winding a spring, or other means for performing the same function as the key are detachably connected, as by threading, to a spring winding stem attached to the spring, so that the key can freely be connected to or disconnected from the spring winding stem.
When the spring winder means is detachable from the spring winding stem, it is likely to be lost or misplaced. When such detachable spring winder means is used with a clockworktoy for children, there is the hazard of a small child putting it in the mouth, while play ing, and swallowing it.
It is desirable therefore that the spring winder means be constructed such that it cannot readily be disconnected from the spring winding stem once it is conpair and disassembling. Loosening of the coil spring should require a considerably high force, so that the winder means is prevented from being inadvertently dislodged or removed by a child.
Other and additional objects as well as features and advantages of the invention will become evident from the description set forth hereinafter when considered in conjunction with the accompanying drawings.
Brief Description of the Drawings FIG. 1 is a plan view, with certain parts being broken away, of the device for fixing spring winder means comprising one embodiment of this invention, showing the spring winder means having the coil spring mounted over it being juxtaposed to the spring winding stem;
FIG. 2 is a plan view, with certain parts being broken I away, of the device according to this invention, showspring winder means and the spring winding stem may be crushed by crimping it with pliers, or the former may be joined by soldering to the latter. If the spring winder means were firmly secured to the spring winding stern of a toy in this way, it would be impossible to disconnect them till the toy is broken and discarded. Thus, when it is desired to repair the toy, it would be impossible to disassemble it into its component parts.
Summary of the Invention This invention has as its object the provision of a device for fixing spring windertmeans comprising a spring winding stem having a threaded portion, a spring winder means having a threaded portion adapted to be threadably connected to the threaded portion of the spring winding stem, and a coil spring adapted to be fitted intimately over the spring winding stem and the spring winder means, threadably connected together, the coil spring comprising convolutions arranged in a direction which is the same as the direction in which the threads formed on the spring winding stem and the spring winder means for threadably connecting them together are wound, so that the spring winder means threadably connected to the spring winding stem can be firmly secured thereto by means of the soil spring and cannot readily be disconnected therefrom by turning the spring winder means in any direction once it is fixed to the spring winding shaft.
The device according to this invention is very simple in construction and yet positive in performing the operation of firmly securing the spring winder means to the spring winding stem and preventing it from being disconnected. The coil spring mounted between the spring winder means and the spring winding stem ensures that the winder means is not disconnected from the winding stem once the former is threadably connected to the latter.
According to this invention, the spring winder means is not permanently connected to the spring winding stem, but theformer can be disconnected from the latter when desired. That is, if the spring winder means is unscrewed after the coil spring is loosened, the spring winder means can be readily disconnected from the spring winding stem. This arrangement facilitates reing the spring winder means having the coil spring mounted over it being threadably connected to the spring winding stem; and
FIG. 3 is a fragmentary plan view, on an enlarged scale, of FIG. 2. I
Description of a Preferred Embodiment The invention will now be described with reference to an embodiment in which the spring winder means is a key provided with an internal threaded portion and the spring winding stem is provided with an external threaded portion. It is to be understood that the invention is not limited to this embodiment and that an internal threaded portion may be provided in the spring winding stem and an external threaded portion may be provided in the spring winder means. The spring winding stem may be a shaft having one end to which a spring is attached, or may be a spring shaft itself.
In FIG. I, a spring winding stem ll having a spring 4 attached to one end portion threrof is supported by a frame 3 suchas of a toy, and the other end portion of spring winding stem 1 is provided with an external threaded portion 2.
On the other hand, a spring winder means or key 5 adapted to be connected'to spring winding stem 11 is provided at a forward end portion thereof with an internal threaded portion 6 adapted to threadably engage the external threaded portion 2 of the spring winding stem 1.
The key 5 is formed on the outer circumferential surface thereof with an offset portion 9 to provide a minor diameter portion 7 at the end portion of key 5 which has an outer diameter substantially the same as the outer diameter of spring winding stem 1. A coil spring 8, having convolutions directed in the same direction as the thread of the threaded portion on the key S is lightly force fitted over the minor diameter portion 7 of key 5 at one end portion thereof, and then the key 5 is threadably connected to the spring winding stem 1 so that the other end portion of coil spring 8 is lightly force fitted over the outer circumferential surface of spring winding stem 1 as shown in FIG. 2. Preferably, the coil spring 8 has an inner diameter which is equal to or smaller than the outer diameter of the minor diameter portion of key 5. The coil spring 8 may be constructed such that its inner peripheral surface partly engages winding stem 1 and key 5.
If one tries to turn the key 5 in the direction of an arrow as shown in FIG. 3 in an effort to disconnect the key 5 from the spring winding stem I by unscrewing after the coil spring 8 is force fitted over the threadably connected key and stem 1, the key 5 and stem 1 will be locked by the coil spring 8 since the frictional force imparted to the coil spring 8 when it is force fitted over the minor diameter portion of key 5 acts on the coil spring 8 to force it tightly over the stem 1 by virtue of the arrangement in which the convolutions of coil spring 8 are directed in the same direction as the thread formed on the key S. It is thus impossible to disconnect the key 5 from the winding stem 1 by unscrewing. Also,
the frictional force imparted to the coil spring 8 when it is force fitted over the spring winding stem 1 in threadably connecting the key 5 to the stem 1 acts to loosen the coil spring 8, thereby enabling the key 5 and stem 1 to be maintained in threadable connection.
The coil spring 8 is precluded from axial movement by abutment against the offset portion 9 and against the frame 3 to which the spring winding stem 1 is connected, the offset portion 9 having a height which is greater than or equal to the diameter a of a wire constituting the spring Thus, end portions of the coil spring are not exposed and the hazards of the hands of a child being injured by them are precluded. It is to be understood that the offset portion can be provided on the outer circumferential surface of the spring winding shaft 1, not on the outer circumferential surface of the key 5 as aforementioned.
According to this invention, the portion of the coil spring 8 which extends outwardly beyond the end of the minor diameter portion 7 of key 5 over which the coil spring 8 is force fitted has a length b which is smaller than the length of the external threaded portion 2 of the spring winding stem 1. By this arrangement, the force fitting of the coil spring 8 over the spring winding stem 1 can be initiated while the spring winding stem 1 is still in the process of being screwed into the key 5. This expands the coil spring 8 and thereby facilitates the screwing of the spring winding stem 1 into the key 5.
When the inner diameter of coil spring 8 is much smaller than the outer diameter of spring winding stem 1, the force fitting of coil spring 8 over the spring winding stem 1 will be facilitated if the portion of the coil spring 8 disposed on the side of spring winding stem 1 is expanded to have a greater inner diameter or if the end of the stem 1 from which the external threaded portion 2 extends is cut aslant to provide a shoulder la therein.
What I claim is:
1. A device for fixing spring winder means comprising a spring winding stern formed with a threaded portion, a spring winder means formed with a threaded portion and adapted to be threadably connected to said spring winding stem, one of said threaded portions being a male threaded stud and the other of said threaded portions being a female threaded socket portion for receiving said threaded stud; and a cylindrical coil spring intimately fitted around non-threaded portions of said spring winding stern and said spring winder means when said stem and said winder means are threadably connected to each other, said coil spring being wound in a direction which is the same as the direction in which the threads of the threaded portions, formed on the spring winding stem and the spring winder means extend for threadably connecting them together.
2. A device for fixing spring winder means as set forth in claim 1 wherein said spring winder means is formed with a minor diameter portion over which said coil spring is adapted to be fitted, said minor diameter portion of said spring winder means having an outer diameter which is substantially the same as the outer diameter of a portion of said spring winding stern which has no thread thereon, said coil spring having an inner diameter which is equal to or smaller than the outer diameter of said minor diameter portion of said spring winder means.
3. A device for fixing spring winder means as set forth in claim 1 wherein at least one of said spring winder means and said spring winding stem is formed with an offset portion of a height greater than the diameter of a wire constituting said coil spring.
4. A device for fixing spring winder means as set forth in claim 1 wherein the threaded portion of said spring winder means is an external threaded portion and the threaded portion of said spring winding stem is an internal threaded portion.
5. A device for fixing spring winder means as set forth in claim 1 wherein the threaded portion of said spring winder means is an internal threaded portion and the threaded portion of said spring winding stem is an external threaded portion.
6. A device for fixing spring winder means as set forth in claim 5, wherein a portion of said coil spring extending outwardly from the end of said minor diameter portion of said spring winder means, over which said coil spring is fitted, has a length which is smaller than the length of said external threaded portion of said spring winding stem.
Claims (6)
1. A device for fixing spring winder means comprising a spring winding stem formed with a threaded portion, a spring winder means formed with a threaded portion and adapted to be threadably connected to said spring winding stem, one of said threaded portions being a male threaded stud and the other of said threaded portions being a female threaded socket portion for receiving said threaded stud; and a cylindrical coil spring intimately fitted around non-threaded portions of said spring winding stem and said spring winder means when said stem and said winder means are threadably connected to each other, said coil spring being wound in a direction which is the same as the direction in which the threads of the threaded portions, formed on the spring winding stem and the spring winder means extend for threadably connecting them together.
2. A device for fixing spring winder means as set forth in claim 1 wherein said spring winder means is formed with a minor diameter portion over which said coil spring is adapted to be fitted, said minor diameter portion of said spring winder means having an outer diameter which is substantially the same as the outer diameter of a portion of said spring winding stem which has no thread thereon, said coil spring having an inner diameter which is equal to or smaller than the outer diameter of said minor diameter portion of said spring winder means.
3. A device for fixing spring winder means as set forth in claim 1 wherein at least one of said spring winder means and said spring winding stem is formed with an offset portion of a height greater than the diameter of a wire constituting said coil spring.
4. A device for fixing spring winder means as set forth in claim 1 wherein tHe threaded portion of said spring winder means is an external threaded portion and the threaded portion of said spring winding stem is an internal threaded portion.
5. A device for fixing spring winder means as set forth in claim 1 wherein the threaded portion of said spring winder means is an internal threaded portion and the threaded portion of said spring winding stem is an external threaded portion.
6. A device for fixing spring winder means as set forth in claim 5, wherein a portion of said coil spring extending outwardly from the end of said minor diameter portion of said spring winder means, over which said coil spring is fitted, has a length which is smaller than the length of said external threaded portion of said spring winding stem.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4756271 | 1971-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3761189A true US3761189A (en) | 1973-09-25 |
Family
ID=12778636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00258541A Expired - Lifetime US3761189A (en) | 1971-06-08 | 1972-06-01 | Device for fixing spring winder means |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3761189A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4254856A (en) * | 1978-03-10 | 1981-03-10 | Kabushiki Kaisha Sankyo Seiki Seisakusho | Coupler of winding key with power spring |
| EP0482929A1 (en) * | 1990-10-26 | 1992-04-29 | Briggs & Stratton Corporation | Power takeoff adapter for drive shaft |
| US20040129517A1 (en) * | 2003-01-08 | 2004-07-08 | Takeshi Murata | Bottom valve apparatus of hydraulic shock absorber |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1067245A (en) * | 1952-11-28 | 1954-06-14 | Declutching drive device | |
| US3662867A (en) * | 1970-03-13 | 1972-05-16 | Robert B Kinzbach | Force transmitting coupling |
-
1972
- 1972-06-01 US US00258541A patent/US3761189A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1067245A (en) * | 1952-11-28 | 1954-06-14 | Declutching drive device | |
| US3662867A (en) * | 1970-03-13 | 1972-05-16 | Robert B Kinzbach | Force transmitting coupling |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4254856A (en) * | 1978-03-10 | 1981-03-10 | Kabushiki Kaisha Sankyo Seiki Seisakusho | Coupler of winding key with power spring |
| EP0482929A1 (en) * | 1990-10-26 | 1992-04-29 | Briggs & Stratton Corporation | Power takeoff adapter for drive shaft |
| US20040129517A1 (en) * | 2003-01-08 | 2004-07-08 | Takeshi Murata | Bottom valve apparatus of hydraulic shock absorber |
| US7240776B2 (en) * | 2003-01-08 | 2007-07-10 | Showa Corporation | Bottom valve apparatus of hydraulic shock absorber |
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