CN2702981Y - Coaxial rail type single-directional expanding device - Google Patents
Coaxial rail type single-directional expanding device Download PDFInfo
- Publication number
- CN2702981Y CN2702981Y CN 200420043026 CN200420043026U CN2702981Y CN 2702981 Y CN2702981 Y CN 2702981Y CN 200420043026 CN200420043026 CN 200420043026 CN 200420043026 U CN200420043026 U CN 200420043026U CN 2702981 Y CN2702981 Y CN 2702981Y
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- groove
- ball
- shape groove
- vee shape
- straight
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Abstract
The utility model discloses a coaxial rail type single-directional expanding device, which comprises a base, a rotary type spring lamination, a plastic disc and an outer cover and also comprises an inner cover and a rolling ball, wherein, the inner side face of the inner cover is provided with a central groove, a circular inner groove and a circular outer groove, a v-shaped groove and a straight-through groove are arranged between the circular inner groove and the circular outer groove, and the rolling ball is positioned on the rotary type spring lamination and is limited in the circular inner groove, the circular outer groove, the v-shaped groove and the straight-through groove. When the utility model is used, the coaxial rail type single-directional expanding device has free expansion, simplicity and convenience, which solves the problems that connecting wires (such as the connecting wires of the mouse and the keyboard) for lives are not enough used due to being too short and are easily confused due to being too long.
Description
Technical field
The utility model relates to a kind of pipe expansion joint, relates in particular to the unidirectional pipe expansion joint of a kind of coaxial rail mounted.
Background technology
In daily life, some connection leads (as the connection lead of mouse, keyboard) have been lacked very much not enough, and are oversize and can cause confusion, are difficult for making in order, brought certain trouble.The product that does not also address this problem on the market occurs now.
Summary of the invention
The purpose of this utility model is that a kind of capable of expansion and contraction, unidirectional pipe expansion joint of coaxial rail mounted simply and easily is provided in order to address the above problem.
The utility model is achieved in that
The utility model comprises base, rotary off-normal spring sheet, vinyl disc and enclosing cover, also comprises an inner cap and a ball in addition.Wherein, the medial surface of described inner cap has a central recess, a circular inner groovy and the outer groove of circle, between described circular inner groovy and the circular outer groove vee shape groove and a straight-through connected in star is arranged; Described ball is positioned on the rotary off-normal spring sheet and is subject to described circular inner groovy, circular outer groove, vee shape groove and straight-through connected in star.
During use, described connection lead lead-in wire terminal enters and is fixed in vinyl disc from base, and described rotary off-normal spring sheet is done contractile motion under the pulling of connection lead leading-out terminal, rolls in the groove outside described circle thereby drive ball.When ball was rolled to vee shape groove mouth, ball can shoal and be obstructed because of the degree of depth of circular outer groove, thereby can only roll in the vee shape groove, is than stabilized conditions.At this moment stop external force, owing to the contention effect of ball to the rotary off-normal spring sheet, the rotary off-normal spring sheet can not be stretched out, thereby connection lead is also motionless.
Again with external force pulling connection lead leading-out terminal, ball will enter circular inner groovy under the drive of the contractile motion of rotary off-normal spring sheet, remove external force, and the rotary off-normal spring sheet is stretched out, ball will roll in the circular outer groove by described straight-through connected in star, the next circulation of beginning.
The beneficial effects of the utility model are:
Since utilized the unstable state of ball and vee shape groove than stabilized conditions, and the path of motion of ball is determined in the connection of different depth by groove and inside and outside groove, so reached capable of expansion and contraction, purpose simply and easily, it is too short not enough with connection lead (as the connection lead of mouse, keyboard) to have solved life, too easily chaotic problem.
Description of drawings
Fig. 1 is the elevational schematic view of inner cap in the utility model;
Fig. 2 is the structural representation of base in the utility model, rotary off-normal spring sheet and vinyl disc;
Fig. 3 is that structural representation cuts open in the office of base in the utility model, rotary off-normal spring sheet, vinyl disc, inner cap and ball;
Fig. 4 is the structural representation of base, rotary off-normal spring sheet, vinyl disc and the connection lead of the utility model when running condition.
Wherein, 1 inner cap, 2 circular inner groovies, 3V font groove, 4 circular outer grooves, 5 balls, 6 bases, 7 rotary off-normal spring sheets, 8 vinyl discs, 9 connection leads, 10,11 connection lead lead-in wire terminals, 12 connection lead leading-out terminals, 13 straight-through connected in stars, 14 central recess.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described:
In Fig. 1 and Fig. 3, the utility model comprises base 6, rotary off-normal spring sheet 7, vinyl disc 8 and enclosing cover (omission), also comprises an inner cap 1 and a ball 5 in addition.Wherein, the medial surface of described inner cap 1 has a central recess 14, a circular inner groovy 2 and the outer groove 4 of circle, between described circular inner groovy 2 and the circular outer groove 4 a vee shape groove 3 and a straight-through connected in star 13 is arranged; Described ball 5 is positioned on the rotary off-normal spring sheet 7 and is subject to described circular inner groovy 2, circular outer groove 4, vee shape groove 3 and straight-through connected in star 13.
In described circular inner groovy 2, exit skirt direction with described vee shape groove 3 is a direction, exit skirt with described vee shape groove 3 is a starting point, partial width to straight-through connected in star 13 is gradually wide, identical with above-mentioned direction and be starting point with straight-through connected in star 13, to the bell-mouthed partial width of vee shape groove 3 diameter less than ball 5.The degree of depth of described vee shape groove 3 is more shallow, and can roll reluctantly with described ball 5 is as the criterion.Outside described circle in the groove 4, be direction with the exit skirt direction of described vee shape groove 3, be starting point with the exit skirt of described vee shape groove 3, the degree of depth of the fraction after the diameter that is slightly larger than described ball 5 is sentenced is the most shallow, and can not roll with described ball 5 is as the criterion.Described central recess 14 is arranged at the center of described inner cap 1 medial surface, and the center of described base 6 is provided with axle 10.
Among Fig. 1, Fig. 2, Fig. 3 and Fig. 4, when the utility model is in running condition, described connection lead lead-in wire terminal 11 enters and is fixed in vinyl disc 8 from base 6, described rotary off-normal spring sheet 7 is done contractile motion under the pulling of connection lead exit end 12, roll in the direction of arrows in the groove 4 outside described circle thereby drive ball 5.When ball 5 was rolled to vee shape groove mouth 3, ball 5 can shoal and be obstructed because of the degree of depth of circular outer groove 4, thereby can only roll in the vee shape groove 3, is than stabilized conditions.At this moment stop external force, because the contention effect of 5 pairs of rotary off-normal spring sheets 7 of ball, rotary off-normal spring sheet 7 can not be stretched out, thereby connection lead 9 is also motionless.
Again with external force pulling connection lead leading-out terminal 12, ball 5 will enter circular inner groovy 2 under the drive of the contractile motion of rotary off-normal spring sheet 7, remove external force, and rotary off-normal spring sheet 7 is stretched out, ball 5 will roll in the circular outer groove 4 by described straight-through connected in star 13, the next circulation of beginning.
Inner cap 1 inserts central recess 14 by axle 10 and is fixed in base 6.
Claims (5)
1, the unidirectional pipe expansion joint of a kind of coaxial rail mounted, comprise base, rotary off-normal spring sheet, vinyl disc and enclosing cover, it is characterized in that: also comprise an inner cap (1) and a ball (5), wherein, the medial surface of described inner cap (1) has a central recess (14), a circular inner groovy (2) and the outer groove (4) of circle, between described circular inner groovy (2) and the circular outer groove (4) a vee shape groove (3) and a straight-through connected in star (13) is arranged; Described ball (5) is positioned at rotary off-normal spring sheet (7) and goes up and be subject to described circular inner groovy (2), circular outer groove (4), vee shape groove (3) and straight-through connected in star (13).
2, the unidirectional pipe expansion joint of coaxial rail mounted according to claim 1, it is characterized in that: in described circular inner groovy (2), exit skirt direction with described vee shape groove (3) is a direction, exit skirt with described vee shape groove (3) is a starting point, partial width to straight-through connected in star (13) is gradually wide, identical with above-mentioned direction and be starting point with straight-through connected in star (13), to the bell-mouthed partial width of vee shape groove (3) diameter less than ball (5).
3, according to claim 1 or the unidirectional pipe expansion joint of the described coaxial rail mounted of claim 2, it is characterized in that: the degree of depth of described vee shape groove (3) is more shallow, and can roll reluctantly with ball (5) is as the criterion.
4, the unidirectional pipe expansion joint of coaxial rail mounted according to claim 1, it is characterized in that: in the groove outside described circle (4), exit skirt direction with described vee shape groove (3) is a direction, exit skirt with described vee shape groove (3) is a starting point, the degree of depth of the fraction after the diameter that is slightly larger than described ball (5) is sentenced is the most shallow, and can not roll with described ball (5) is as the criterion.
5, the unidirectional pipe expansion joint of coaxial rail mounted according to claim 1, it is characterized in that: described central recess (14) is arranged at the center of described inner cap (1) medial surface, and the center of described base (6) is provided with axle (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420043026 CN2702981Y (en) | 2004-03-02 | 2004-03-02 | Coaxial rail type single-directional expanding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420043026 CN2702981Y (en) | 2004-03-02 | 2004-03-02 | Coaxial rail type single-directional expanding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2702981Y true CN2702981Y (en) | 2005-06-01 |
Family
ID=34774871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420043026 Expired - Fee Related CN2702981Y (en) | 2004-03-02 | 2004-03-02 | Coaxial rail type single-directional expanding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2702981Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963775A (en) * | 2012-11-30 | 2013-03-13 | 东莞达电电子有限公司 | Wireless winding device, single-pull winder using same and double-pull winder using same |
| CN108100778A (en) * | 2017-12-11 | 2018-06-01 | 齐鲁工业大学 | A kind of automobile charging pile semi-automatic cable pulling-pushing device and method |
-
2004
- 2004-03-02 CN CN 200420043026 patent/CN2702981Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963775A (en) * | 2012-11-30 | 2013-03-13 | 东莞达电电子有限公司 | Wireless winding device, single-pull winder using same and double-pull winder using same |
| CN102963775B (en) * | 2012-11-30 | 2016-04-20 | 东莞达电电子有限公司 | A kind of wireless type coiling apparatus and apply singly drawing winder, twoly drawing winder of its |
| CN108100778A (en) * | 2017-12-11 | 2018-06-01 | 齐鲁工业大学 | A kind of automobile charging pile semi-automatic cable pulling-pushing device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |