CN201282321Y

CN201282321Y - Improved unidirectional expansion piece coiling dish

Info

Publication number: CN201282321Y
Application number: CNU2008202024335U
Authority: CN
Inventors: 喻建东
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-27
Filing date: 2008-10-27
Publication date: 2009-07-29
Anticipated expiration: 2018-10-27

Abstract

The utility model discloses an improved wire spool of a one-way expansion piece. The expansion piece comprises a base, a wire spool, a spiral groove plate and an upper cover, wherein the centre shaft of the base passes through the wire spool and the spiral groove plate and is connected with the upper cover through a screw; a rotary spring is mounted in the wire spool; an inner wrapping post is arranged below the wire spool; a spiral groove is formed on the spiral groove plate; a linear groove is formed on the inner surface of the upper cover; and a ball is positioned between the spiral groove and the upper cover. The improved wire spool is characterized in that a ring-shaped concave sandwich chamber used for winding is formed on the circumferential wall of the wire spool; and a through hole used for threading is formed between the ring-shaped concave sandwich chamber and the wire spool. The ring-shaped concave sandwich chamber can be used for regulating the position of the connecting wire without affecting the flexible rotation of the wire spool, and is applied to connecting wires in various shapes.

Description

A kind of improved unidirectional expansion bend wire spool

Technical field

The utility model relates to a kind of improved unidirectional expansion bend wire spool, relates in particular to a kind of unidirectional expansion bend wire spool that is applicable to the connecting line of different shape.

Background technology

Expansion bend is a kind of small-sized addition product that newly rises of electronic product market in recent years, be mainly used in optimum management to some connecting lines (as connecting line or other communication, the peripheral game product distribution etc. of USB flash disk, mouse, keyboard), it is taken in no at ordinary times unnecessary connecting line in the expansion bend, directly connecting line is pulled out in the need time spent and to get final product, and the function that has the more stable state of automatic maintenance and automatically reclaim, it has solved the problem of too short not enough, the oversize easy confusion of connecting line.We are devoted to exploitation, the research of expansion bend always, have developed products such as unidirectional expansion bend, bi-directional expansion device in the past and have declared patent.But in the product application process, feedback according to the client, the drawback of unidirectional expansion bend before we have found again: wire spool has only a plane baffle plate of its below, the position of standard connecting line is come in the top by loam cake, in the past at the platypelloid type connecting line, this structure is fully no problem, because above the wire spool and the space between the loam cake inner face is much smaller than the width of connecting line; If but be used for the narrower platypelloid type connecting line of winding width, or ellipse or round connecting line, the unidirectional expansion bend of this structure will because of the connecting line that is used to stretch snap in above the wire spool and the loam cake inner face between the space or the tendency that snaps in above-mentioned space arranged and cause wire spool rotation to be obstructed, under the situation of single load bearing, wire spool more has the possibility of damage.

Summary of the invention

The purpose of this utility model provides a kind of improved unidirectional expansion bend wire spool that is applicable to the connecting line of different shape with regard to being in order to address the above problem.

To achieve these goals, the utility model is by the following technical solutions:

Expansion bend in the utility model comprises: base, wire spool, spiral groove dish and loam cake, wherein, the centre bore that the axis of base passes wire spool and spiral groove dish is connected by screw with loam cake, rotating spring is installed in wire spool, in the opening part of rotating spring above wire spool is fit into, below wire spool, be provided with interior wrapping post, on the spiral groove dish, be provided with spiral groove, in described spiral groove comprises, in outer groove and the connection, " V " connected in star of outer groove, inner face at loam cake is provided with the linear groove, being centered close on the straight line of described linear groove place of described loam cake, between spiral groove dish and loam cake, be placed with ball, and make ball be positioned at spiral groove and linear groove simultaneously, power effect outside and rotating spring, spiral groove, the linear groove, under the mating reaction of ball, the wire spool of described expansion bend can be realized rotation, face and stop and reset, thereby realize the unidirectional elongation of the connecting line on the wire spool, location after the elongation and take-up; Its improvements are: the circle wall of described wire spool is provided with the annular indent sandwich chamber that is used to wind the line, and is provided with the through hole that is used for threading between below annular indent sandwich chamber and described wire spool.

In use, no matter connecting line is any shape, also no matter how many its width of connecting line is, the connecting line that is used to stretch in the annular indent sandwich chamber of wire spool, that is to say, whatsoever the connecting line of shape and width all the time, its contractility all acts on wire spool itself, with not friction of loam cake,, just can not cause the flexible result who is obstructed or damages wire spool of connecting line so can not be obstructed because of the frictional force of the connecting line that is subjected to being used to stretch yet.

As further improvement of the utility model, below described wire spool, the next door of interior wrapping post is provided with 2---4 thread tension discs, preferably be advisable with 3 thread tension discs.The position of the connecting line between this thread tension disc can more fixedly pull out and not be drawn out, when preventing because of backguy firmly too the connecting line that should not pull out originally of senior general pull out, thereby cause expansion bend normally not use, need reinstall and to continue normal the use.

Be provided with the fixture block of projection at the lower edge place of described spiral groove dish, position corresponding with fixture block on wire spool is provided with draw-in groove.The spiral groove dish must rotate with wire spool, so it and wire spool need be coupled together, structure with fixture block and draw-in groove is very simple, effective, because the spiral groove dish is pushed down by loam cake by the ball above it, rotates synchronously with wire spool all the time.

Described fixture block and draw-in groove are four, are distributed in circumference and the circumference above the described wire spool below the described spiral groove dish respectively equably.

The beneficial effects of the utility model are:

Because the annular indent sandwich chamber effectively position of standard connecting line can't influence the flexible rotation of wire spool, so adopt the connecting line of unidirectional expansion bend of the present utility model applicable to different shape, the wire spool of unidirectional expansion bend is obstructed or impaired problem because of the frictional force of the connecting line that is subjected to being used to stretch before having solved.

Description of drawings

Fig. 1 is that the master of unidirectional expansion bend looks the assembly structure schematic diagram in the utility model;

Fig. 2 is the structural representation of looking up of the present utility model;

Fig. 3 is a plan structure schematic diagram of the present utility model;

Fig. 4 is the plan structure schematic diagram after the utility model covers the spiral groove dish;

Fig. 5 be unidirectional expansion bend in the utility model loam cake look up structural representation.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described in detail:

As shown in Figure 1, expansion bend in the utility model comprises: base 1, wire spool 3, spiral groove dish 5 and loam cake 8, wherein, the axis 10 of base 1 centre bore 50 backs of passing the centre bore 30 of wire spool 3 and spiral groove dish 5 are connected with screw by its screw hole 80 with loam cake 8.As shown in Figure 3, rotating spring 39 is installed in wire spool 3, in the opening part of rotating spring 39 above wire spool 3 is fit into.As shown in Figure 2, wrapping post 32 in being provided with below wire spool 3 is below wire spool, the next door of interior wrapping post 32 is provided with 3 thread tension discs 35, also is provided with clamp post 30 on the next door of interior wrapping post 32.As shown in Figure 4, be provided with spiral groove 52 on spiral groove dish 5, spiral groove 52 comprises inside and outside groove and connects " V " connected in star of inside and outside groove; As shown in Figure 5, be provided with linear groove 81, being centered close on the linear groove 81 place straight lines of loam cake 8 at the inner face of loam cake 8; As shown in Figure 4 and Figure 5, between spiral groove dish 5 and loam cake 8, be placed with ball 53, and make ball 53 be positioned at spiral groove 52 and linear groove 81 simultaneously.

As shown in Figure 1, the circle wall of wire spool 3 is provided with the annular indent sandwich chamber 31 that is used to wind the line, as shown in Figures 2 and 3, be provided with the through hole that is used for threading between below annular indent sandwich chamber 31 and wire spool 3, described through hole comprises the horizontal through hole on vertical through hole 37 and draw-in groove 36 next doors.

As shown in Figure 1, be provided with the fixture block 51 of projection at the lower edge place of spiral groove dish 5, as shown in Figure 3, position corresponding with fixture block 51 on wire spool 3 is provided with draw-in groove 36; Fixture block 51 is four with draw-in groove 36, is distributed in circumference and the circumference above the wire spool 3 below the spiral groove dish 5 respectively equably.Like this, spiral groove dish 5 is with just rotation under the acting in conjunction of fixture block 51 and draw-in groove 36 of wire spool 3.

During installation,, earlier connecting line is inserted from vertical through hole 37, calculated length then, connecting line is divided into two, fix for one section in the middle of getting in conjunction with Fig. 1 and Fig. 2, as Fig. 2, fixing by three thread tension discs 35, a clamp post 30 respectively below wire spool 3; As Fig. 3, fixing by arc stator 38 on wire spool 3.After fixing,, the connecting line that is not drawn out is wrapped in interior wrapping post 32, then the end of a thread is passed hole corresponding on the base 1, connect miscellaneous equipment (as the USB famale connector) as Fig. 2 and Fig. 1; As Fig. 3 and Fig. 1, after fixing by arc stator 38, passes the connecting line that needs are flexible the horizontal through hole on draw-in groove 36 next doors, be wrapped in the annular indent sandwich chamber 31 of wire spool 3, again the line tail passed hole corresponding on the base 1, connect miscellaneous equipment (as the USB male contact).At last, install rotating spring 39, spiral groove dish 5, ball 53 and loam cake 8 successively, install and finish.

In use, no matter connecting line is any shape, also no matter how many its width of connecting line is, the connecting line that is used to stretch in the annular indent sandwich chamber 31 of wire spool 3, that is to say, whatsoever the connecting line of shape and width all the time, it is own that its contractility all acts on wire spool 3, with not friction of loam cake 8,, just can not cause the flexible result who is obstructed or damages wire spool 3 of connecting line so can not be obstructed because of the frictional force of the connecting line that is subjected to being used to stretch yet.

Claims

1, a kind of improved unidirectional expansion bend wire spool, described expansion bend comprises: base, wire spool, spiral groove dish and loam cake, wherein, the centre bore that the axis of base passes wire spool and spiral groove dish is connected by screw with loam cake, rotating spring is installed in wire spool, in the opening part of rotating spring above wire spool is fit into, below wire spool, be provided with interior wrapping post, on the spiral groove dish, be provided with spiral groove, in described spiral groove comprises, in outer groove and the connection, " V " connected in star of outer groove, inner face at loam cake is provided with the linear groove, being centered close on the straight line of described linear groove place of described loam cake, between spiral groove dish and loam cake, be placed with ball, and make ball be positioned at spiral groove and linear groove simultaneously, power effect outside and rotating spring, spiral groove, the linear groove, under the mating reaction of ball, the wire spool of described expansion bend can be realized rotation, face and stop and reset, thereby realize the unidirectional elongation of the connecting line on the wire spool, location after the elongation and take-up;

It is characterized in that:

The circle wall of described wire spool is provided with the annular indent sandwich chamber that is used to wind the line, and is provided with the through hole that is used for threading between below annular indent sandwich chamber and described wire spool.

2, improved unidirectional expansion bend wire spool according to claim 1 is characterized in that: below described wire spool, the next door of interior wrapping post is provided with 2---4 thread tension discs.

3, improved unidirectional expansion bend wire spool according to claim 2, it is characterized in that: described thread tension disc is 3.

4, improved unidirectional expansion bend wire spool according to claim 1 is characterized in that: be provided with the fixture block of projection at the lower edge place of described spiral groove dish, position corresponding with fixture block on wire spool is provided with draw-in groove.

5, improved unidirectional expansion bend wire spool according to claim 4, it is characterized in that: described fixture block and draw-in groove are four, are distributed in circumference and the circumference above the described wire spool below the described spiral groove dish respectively equably.