TWI699323B - Extension cord with retractable line structure - Google Patents

Abstract

This creation is an extension line with a retractable line structure, which includes a first turntable, a second turntable and a sliding part. The first turntable includes a first sliding rail extending along the radial direction. The second turntable is rotatably combined with the first turntable and includes a spirally extending second slide rail. The sliding member is simultaneously movably arranged on the first sliding rail and the second sliding rail. Thereby, the two end points of the second slide rail form a stop point to avoid excessive rotation; at the same time, when the slide member moves along the spiral second slide rail on the second turntable, the slide member can be relative to the first The turntable moves along the radial direction of the first turntable, whereby the sliding member can move toward or away from the spiral center without being restricted by the first turntable. Therefore, the first turntable can rotate more than one revolution relative to the second turntable by using the spiral second slide rail.

Description

Extension cord with retractable line structure

This creative department relates to an extension cord with a retractable line structure.

The conventional extension cord with a retractable line structure includes a first turntable and a second turntable. The first turntable and the second turntable face each other and are rotatably combined with each other, and a wire take-up space is sandwiched between the first turntable and the second turntable. The user winds the wire in the wire take-up space by rotating the first turntable and the second turntable.

In order to avoid excessive rotation and damage to the wire during the take-up process, the prior art manual extension cord with take-up and take-up structure is formed with an arc-shaped chute on the first turntable, and any point on the arc-shaped chute is connected to the first The distance between the rotation centers of the turntable is the same, that is, the arc-shaped sliding groove extends along a circle centered on the rotation center. In contrast, a convex post is formed on the second turntable, and the distance between the convex post and the center of rotation of the second turntable is equal to the distance between any point on the arc chute and the center of rotation of the first turntable. The center of rotation coincides with the center of rotation of the first turntable. Therefore, when the second turntable rotates relative to the first turntable, the protruding column is movably arranged in the arc chute along the arc chute, whereby the arc chute The two ends of it form a stop point. Therefore, when the convex post moves along the arc-shaped chute to one end of the arc-shaped chute due to the mutual rotation of the first turntable and the second turntable, the first and second turntables will stop convexly because of the arc-shaped chute. The column stops further rotating in the same direction, thereby avoiding excessive rotation and damage to the wire.

However, in the prior art extension cord with a retractable wire structure, because the convex post is fixed on the second turntable, the convex post can only keep the same distance from the center of rotation when the second turntable rotates. The arc chute can only extend for nearly one week at most. However, due to the limitation of the two ends of the arc-shaped sliding groove, the first turntable and the second turntable can only rotate one circle relative to each other at most, so the length of the wire that can be wound is also limited.

In order to increase the length of the wire that can be rolled up by the extension cord with the take-up and pay-off structure, how to form a stop point to avoid excessive rotation, and at the same time make the first and second turntables rotate more than one turn relative to each other , It becomes a problem that must be overcome in the technical field of extension cords with retractable wire structure.

In view of the aforementioned shortcomings and deficiencies of the prior art, this creation provides an extension cord with a retractable line structure, which can also form a stop point to avoid excessive rotation, and at the same time, it can also enable the first and second turntables to be relatively Rotate each other more than one circle, thereby increasing the length of the wire that can be wound.

In order to achieve the above creative purposes, the technical means used in this creation is to design an extension cord with a retractable line structure, which includes: a first turntable, which includes a first joint surface; and a first slide rail, which is set at The first coupling surface extends along the radial direction of the first turntable; a second turntable is rotatably coupled with the first turntable and includes a second coupling surface facing the first turntable A first joint surface, and a wire take-up space is formed between the first joint surface; a second slide rail is arranged on the second joint surface and extends in a spiral shape; A sliding member movably provided on the first slide rail of the first turntable, and at the same time movably provided on the second slide rail of the second turntable; a wire, which is selectively accommodated in the In the take-up space.

The advantage of this creation is that by providing a first slide rail extending in the radial direction on the first turntable, and designing the second slide rail on the second turntable to extend in a spiral shape, the slide can be simultaneously It is movably arranged in the first slide rail and the second slide rail. In this way, the two end points of the second slide rail can also form stop points, so that the slide member cannot move in the same direction after moving to one of the end points of the second slide rail, which can avoid excessive rotation; at the same time, because the slide member Set in the first slide rail of the first turntable, so when the sliding member moves along the spiral second slide rail on the second turntable, the slide member can also be relative to the first turntable along the radial direction of the first turntable As a result, the sliding member can move toward or away from the spiral center without being restricted by the first turntable. In other words, when the first turntable and the second turntable are rotating, the distance between the sliding member and the center of rotation is not fixed, that is to say, on the first turntable, the first slide rail can approach or move away from the center of rotation, and on the second turntable The second slide rail can be used to approach or move away from the center of rotation. In this way, the spiral second slide rail can make the first turntable rotate more than one revolution relative to the second turntable. To sum up, this creation can form a stopping point to avoid excessive rotation, and at the same time, it can also make the first and second turntables rotate more than one turn relative to each other, thereby increasing the length of the wire that can be wound.

Further, in the extension cord with a retractable and unwinding structure, the second turntable further includes two positioning portions formed on both ends of the second sliding rail; the sliding member is selectively connected to one of the The positioning parts are fastened to each other.

Furthermore, in the extension cord with a retractable and unwinding structure, the surface of the sliding member has a groove; each of the positioning portions is a convex point; when the sliding member and one of the positioning portions are locked to each other, The positioning part is clamped in the groove.

Furthermore, in the extension cord with a retractable and unwinding structure, the surface of the sliding member has a convex point; each of the positioning portions is a groove; when the sliding member and one of the positioning portions are locked to each other, The convex point is fixed in the positioning part.

Furthermore, in the extension cord with a retractable and unwinding structure, the second turntable further includes two elastic pieces that are elastic and are respectively formed at two ends of the second slide rail, and the two positioning portions are respectively Formed on the two elastic pieces.

Furthermore, in the extension cord with a retractable and unwinding structure, the second turntable further includes a second outer side surface, and the second coupling surface is opposite sides of the second turntable; two U-shaped through slots, They are respectively located at both ends of the second slide rail; the two U-shaped through-slots penetrate through the second outer side surface and the second joining surface of the second turntable, whereby the two U-shaped through-slots are on the second turntable The two elastic pieces are respectively formed.

Furthermore, the extension cord with a retractable and unwinding structure further includes two auxiliary elastic pieces arranged on the second outer surface of the second turntable; the positions of the two auxiliary elastic pieces correspond to the first The two elastic pieces of the two turntables thereby provide auxiliary supporting force for the two elastic pieces.

Furthermore, in the extension cord with a retractable line structure, the two auxiliary elastic pieces are made of metal.

10: First turntable

11: The first joint surface

12: The first slide

20: second turntable

21: The second joint surface

22: second outer side

23: second slide

24: Positioning department

25: Shrapnel Department

26: U-shaped slot

27: Shrapnel accessories

30: Slider

40: Wire

Figure 1 is the three-dimensional appearance of this creation.

Figure 2 is an exploded view of the components of this creation.

Figure 3 is a top view of the second turntable of this creation.

Figure 4 is an exploded view of another component of this creation.

Figure 5 is a side view of this creation.

Figure 6 is the bottom section view of this creation.

Figure 7 is a schematic diagram of the action of this creation.

In the following, in conjunction with the drawings and preferred embodiments of this creation, the technical means adopted by this creation to achieve the predetermined creation purpose are further described.

Please refer to FIG. 1 and FIG. 2, the extension cord with a retractable line structure of the present creation includes a first turntable 10, a second turntable 20, a sliding member 30 and a wire 40.

The first turntable 10 includes a first coupling surface 11 and a first sliding rail 12. The first sliding rail 12 is disposed on the first joining surface 11 and extends along the radial direction of the first turntable 10. In addition, in this embodiment, the first sliding rail 12 is a groove recessed and formed on the first coupling surface 11. However, in other embodiments, the first sliding rail 12 may also be a sliding rail protruding from the first coupling surface 11. rail.

Please further refer to FIGS. 2 to 4, the second turntable 20 is rotatably combined with the first turntable 10 and includes a second coupling surface 21, a second outer side surface 22 and a second sliding rail 23. The second coupling surface 21 faces the first coupling surface 11 of the first turntable 10 and is sandwiched with the first coupling surface 11 to form a wire-retracting space. The second outer side surface 22 and the second joining surface 21 are opposite sides of the second turntable 20. The second sliding rail 23 is disposed on the second joining surface 21 and extends in a spiral shape. Moreover, in this embodiment, the second sliding rail 23 is also a groove; but in other embodiments, the second sliding rail 23 may also be a sliding rail protruding from the second coupling surface 21.

The sliding member 30 is movably disposed in the first sliding rail 12 of the first turntable 10 and at the same time is movably disposed in the second sliding rail 23 of the second turntable 20.

The wire 40 is selectively accommodated in the wire take-up space, that is, between the first turntable 10 and the second turntable 20. Specifically, one end of the wire 40 is fixed on the first turntable 10 or the second turntable 20, so that when the first turntable 10 and the second turntable 20 rotate relative to each other, the wire 40 will be retracted In the wire space or released from the wire take-up space, the effect of extending the wire can be achieved in this way, and the length of the wire 40 can be controlled at the same time.

Please refer to FIGS. 5-7. With the above structure, the two ends of the second slide rail 23 can form stop points, so that the sliding member 30 cannot move toward the same end after moving to one end of the second slide rail 23. Advance in the direction, thereby avoiding excessive rotation. At the same time, since the slider 30 is provided in the first slide rail 12 of the first turntable 10, when the slide member 30 moves on the second turntable 20 along the spiral second slide rail 23, the slide member 30 can simultaneously Since the first turntable 10 moves along the radial direction of the first turntable 10, the sliding member 30 can move toward or away from the spiral center without being restricted by the first turntable 10. In other words, when the first turntable 10 and the second turntable 20 are rotating, the distance between the slider 30 and the center of rotation is not fixed, that is to say, the first slide rail 12 can approach or move away from the center of rotation on the first turntable 10, and On the second turntable 20, the second slide rail 23 can be used to approach or move away from the center of rotation. In this way, the spiral second slide rail 23 can make the first turntable 10 rotate more than one revolution relative to the second turntable 20.

Please further refer to FIG. 2 to FIG. 4. In this embodiment, the second turntable 20 further includes two positioning portions 24. Two positioning portions 24 are respectively formed at two ends of the second sliding rail 23, and the sliding member 30 is selectively locked with one of the positioning portions 24. In other words, when the sliding member 30 moves along the second sliding rail 23 to one end of the second sliding rail 23, the sliding member 30 will be locked with the positioning portion 24 at that end, thereby not only temporarily restricting the first turntable 10 and the second turntable 20 prevent the two from rotating at will, and can also form a pause to feedback the user that the user knows that it has been rotated to the limit of retracting. Specifically, the matching structure of the sliding member 30 and the positioning portion 24 can have various forms. For example, in this embodiment, the surface of the sliding member 30 has a groove, and each positioning portion 24 is a convex point; thereby, when the sliding member 30 and one of the positioning portions 24 are locked to each other, the positioning portion 24 is locked in In the groove. Or in other embodiments, the surface of the sliding member 30 has a convex point, and each positioning portion 24 is a groove; thereby, when the sliding member 30 and one of the positioning portions 24 are fixed to each other, the convex point is fixed to Locating part 24.

In addition, in this embodiment, the second turntable 20 further includes two elastic pieces 25. The two elastic pieces 25 are elastic and are respectively formed on two ends of the second sliding rail 23, and the aforementioned two positioning system portions are respectively formed on the two elastic pieces 25. Utilizing the elasticity of the elastic piece portion 25, when the positioning portion 24 and the sliding member 30 are locked or disengaged from each other, they can be more flexible, making the operation more convenient. Furthermore, in the present embodiment, the two elastic pieces 25 are formed in such a way that the second turntable 20 further includes two U-shaped through grooves 26, and the two U-shaped through grooves 26 are respectively located at two ends of the second slide rail 23, The two U-shaped through slots 26 penetrate the second outer surface 22 and the second joining surface 21 of the second turntable 20, whereby the two U-shaped through slots 26 respectively form two elastic pieces 25 on the second turntable 20. However, the formation of the two elastic pieces 25 is not limited to the above. For example, each elastic piece 25 may also be an independent element and one end of the elastic piece 25 may be fixed on the second turntable 20, or each elastic piece 25 may be formed protruding from the second turntable 20. On the turntable 20, there is no need to use the U-shaped slot 26 to form the elastic piece 25 on the second turntable 20.

Furthermore, in the embodiment with the elastic piece portion 25, two elastic piece auxiliary members 27 may be further included. For example, in this embodiment, two auxiliary elastic pieces 27 are provided on the second outer surface 22 of the second turntable 20, and the positions of the two auxiliary elastic pieces 27 respectively correspond to the two elastic portions 25 of the second turntable 20, thereby providing two elastic pieces The part 25 assists the supporting force. In addition, in this embodiment, the two auxiliary elastic pieces 27 are made of metal, but it is not limited thereto.

The above is only the preferred embodiment of this creation, and does not impose any formal restriction on this creation. Although this creation has been disclosed as above in preferred embodiments, it is not intended to limit this creation. Any technical field has Generally knowledgeable persons, without departing from the scope of this creative technical solution, can use the technical content disclosed above to make slight changes or modifications into equivalent embodiments with equivalent changes. However, any content that does not deviate from this creative technical solution is based on this Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence of the creation still fall within the scope of the technical solution for creation.

10: First turntable

11: The first joint surface

12: The first slide

20: second turntable

21: The second joint surface

23: second slide

24: Positioning department

30: Slider

40: Wire

Claims (8)

An extension cord with a retractable and unwinding structure, which includes a first turntable, which includes a first joining surface, and a first sliding rail, which is arranged on the first joining surface and extends along the radial direction of the first turntable ; A second turntable, which can be rotatably combined with the first turntable and includes a second coupling surface, which faces the first coupling surface of the first turntable, and is sandwiched with the first coupling surface to form a collection Line space; a second slide rail, which is provided on the second joint surface and extends in a spiral shape; a sliding member, which is movably provided on the first slide rail of the first turntable, and at the same time is movably provided On the second slide rail of the second turntable; a wire, which is selectively accommodated in the wire take-up space. The extension cord with a retractable and unwinding structure as described in claim 1, wherein the second turntable further includes two positioning portions respectively formed at two ends of the second sliding rail; the sliding member is selectively connected to one of the The positioning parts are fastened to each other. The extension cord with a retractable and unwinding structure as described in claim 2, wherein the surface of the sliding member has a groove; each of the positioning portions is a convex point; when the sliding member and one of the positioning portions are locked to each other, The positioning part is clamped in the groove. The extension cord with a retractable and unwinding structure according to claim 2, wherein the surface of the sliding member has a convex point; each of the positioning portions is a groove; when the sliding member and one of the positioning portions are locked to each other, The convex point is fixed in the positioning part. The extension cord with a retractable and unwinding structure according to any one of claims 2 to 4, wherein the second turntable further includes two elastic pieces, which are elastic and are respectively formed at two ends of the second slide rail, And the two positioning parts are respectively formed on the two elastic piece parts. According to claim 5, the extension cord with a retractable and unwinding structure, wherein the second turntable further includes a second outer side surface, and the second joint surface is opposite sides of the second turntable; two U-shaped slots, They are respectively located at both ends of the second slide rail; the two U-shaped through-slots penetrate through the second outer side surface and the second joining surface of the second turntable, whereby the two U-shaped through-slots are on the second turntable The two elastic pieces are respectively formed. The extension cord with a retractable and unwinding structure as described in claim 6, which further includes two auxiliary elastic pieces arranged on the second outer surface of the second turntable; the positions of the two auxiliary elastic pieces correspond to the first The two elastic pieces of the two turntables thereby provide auxiliary supporting force for the two elastic pieces. According to claim 7, the extension cord with a retractable line structure, wherein the two auxiliary elastic pieces are made of metal.

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