JP2002034138A - Excessive wire harness holding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a holding device for a wire harness, capable of reducing the size of the overall device and simplifying the structure thereof, and preventing generation of noise due to an excessive wire harness. SOLUTION: The wire harness 3 is bent and fixed at a fixed position and is guided to the outside of a housing 2, in an energized condition by an elastic rib 6. A first protector 4 is mounted reciprocatively at an opening 8 in the housing 2, and a second protector 5 is mounted slidably along the first protector 4 with the wire harness 3 being fixed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of absorbing a wire harness which is pulled out when, for example, an automobile door is opened, without loosening between the door and the body when the door is closed. The present invention relates to a wire harness excess length absorbing device that can be used.

[0002]

2. Description of the Related Art Some vehicles such as automobiles are equipped with courtesy lamps and switches on doors, and the courtesy lamps and switches are connected to control devices equipped on the body side by wire harnesses and the like. Therefore, for example, when the door is opened, the wire harness is pulled out from the body side according to the opening angle. On the other hand, when the door is closed, the wire harness must be absorbed by the body,
The wire harness remains in the open / close position in a slack state, causing an accident such as being disconnected between the door and the body, or short-circuited by peeling off the covering.

[0003] For the purpose of preventing such an accident, a "movable wire harness" has been proposed, for example, in Japanese Patent Application Laid-Open No. 9-20189. This movable wire harness is configured such that a flat harness is stored in a storage box in a loose state, and one end is pulled to one side by a spring. When the rear window is opened, the wire harness is pulled out against the spring, and when the rear window is closed, the wire harness is pulled into the storage box by the action of the spring, thereby absorbing the extra length of the wire harness.

However, since the wire harness is not protected by the drawer, the above-mentioned accident such as peeling of the coating is apt to occur, and the slack is formed in the storage box when the extra length is absorbed. However, there is a problem that abnormal noise is likely to occur due to contact with the inside of the storage box. Therefore, for example, a wire harness excess length absorbing device as shown in FIG. 15 has been proposed.
The illustrated wire harness excess length absorbing device is disclosed in Japanese Patent Application Laid-Open No. H10-76887 as "the telescopic structure of the door circuit body".

That is, according to the above publication, a long guide groove 71 for slidingly guiding a harness protector 67 is formed in the upper and lower walls 62 of the harness storage case 61 in the longitudinal direction, and a guide roller 63 is provided near the front end of the upper and lower walls 62. Is formed in a slightly arc shape in a direction orthogonal to the guide groove 71. The upper and lower walls 62 gradually widen toward the front along the tapered wall 65, and widen greatly at the front end to form the guide groove 72. The upper and lower walls 62 serve as slide guides for the protector 67.

A guide roller A is provided above and below the protector 67.
A pair of sys 80 are arranged. The flat wire harness 64 is bent in a substantially S-shape via the fixing portion 66, passes between the guide roller 63 and the support roller 75, is routed on the inner surface of the side wall of the protector 67, and is connected to the connector 68 at the tip of the protector. in the process of. The support roller 75 is in contact with the outer surface of the protector side wall 77, and the guide roller 63 is in contact with the wire harness 64. In addition, a pair of upper and lower slide shafts 81 movably engaged with the guide grooves 71 of the harness storage case 61 protrude from rear ends of the upper and lower walls 78 of the protector 67. The connector 68 is connected to a connector 98 of a wire harness 97 on the vehicle body main body 96 side. When the door is opened and closed, the protector 67 swings left and right with the slide shaft 81 at the rear end as a fulcrum. Therefore, a long hole-shaped guide groove 72 into which the shaft 76 of the bracket 73 swinging integrally with the protector 67 is required.

According to the above configuration, when the protector 67 retreats into the harness housing case 61 along the guide groove 71 when the door is closed, the rack 79 rotates around the pinion gear (provided at one end of the guide roller 63). Then, the guide roller 63 rotates integrally with the pinion gear. Thereby, the wire harness 64 is forcibly drawn into the harness storage case 61. The guide roller 63 rotates without providing a gap between the wire harness 64 and the protector 67, reduces abrasion resistance at the time of housing, and can house the wire harness 64 smoothly.

[0008]

However, the above-described telescopic structure of the door circuit has the following problems. That is, in order to store the protector, the size of the housing for accommodating the expandable structure, in other words, the housing constituting the extra length absorbing device is equal to or more than the extension stroke of the wire harness, and the extra length absorbing device is used. It becomes difficult to reduce the size. Further, since the positioning is performed by the elasticity of the wire harness itself, for example, when vibration is applied during traveling, the wire harness swings and comes into contact with the housing, which may generate abnormal noise. Further, there are problems such as a complicated structure, a large number of parts, and an increase in cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a wire harness excess length absorbing device capable of miniaturizing the entire device, simplifying the structure, and preventing generation of abnormal noise due to loosening of the wire harness. The purpose is to provide.

[0010]

A wire harness excess length absorbing device according to the present invention for achieving the above object accommodates a wire harness introduced from an opening provided at one end in a bent state and is provided at the other end. A housing derived from the opening,
A wire harness extra length absorbing device, comprising: a first protector that fits into an opening provided at the other end and reciprocates inside and outside the housing while covering the wire harness. A second protector that is slidably attached to a side surface of the first protector while covering and fixing the harness, and that moves along a reciprocating direction of the first protector by urging of the wire harness; By the harness bias,
The first protector and the second protector draw the wire harness out of the housing and store the wire harness in the housing.

The second protector that slides in the reciprocating direction of the first protector is provided for the first protector that is reciprocally provided in the opening of the housing. Is larger than the length of a single protector due to the addition of the lengths of the first and second protectors, and the length of the first and second protectors is reduced in parallel when retracted. You. Therefore, the size of the housing may be sufficient to accommodate the protectors in a parallel state, and the size of the housing can be reduced, even though the drawer of the wire harness is absorbed in the housing.

According to a second aspect of the present invention, there is provided the wire harness excess length absorbing device according to the first aspect, wherein the wire harness is folded back at a fixed position in the housing. And is inserted into the first protector in a state where tension is applied by abutment of an elastic rib reciprocating integrally with the first protector from a folded position.

[0013] According to this configuration, the wire harness is fixed to the housing at the folded position, and the tension is applied by the elastic rib reciprocating integrally with the first protector, so that the wire harness can be pulled out or absorbed. It is always stretched regardless of the amount.

According to a third aspect of the present invention, there is provided the wire harness excess length absorbing device according to the first aspect, wherein the first and second protectors are rotatably provided on the first protector. A second gear, the second gear;
A second tooth form that is provided on the protector and rotates the second gear by reciprocating motion of the second protector; a power transmission unit that transmits rotation of the second gear to the first gear; And an interlocking mechanism configured by a first tooth form that reciprocates the first protector by rotation of the first gear.

According to the wire harness excess length absorbing device having the above-described configuration, for example, the second gear meshing with the tooth form formed on the second protector rotates in response to the closing operation of the door, and this rotation is performed by the first gear. Transmitted to gears. As a result, the first protector is housed in the housing by the engagement between the first gear and the tooth form provided in the housing.

According to a fourth aspect of the present invention, there is provided the wire harness excess length absorbing device according to the first aspect, wherein the housing, the first housing and the first housing are connected to each other.
And a pantograph mechanism that expands and contracts in the reciprocating direction of the first and second protectors with one end of one of the first and second protectors as a fixed end, and interlocks the reciprocating motion of the first and second protectors. .

According to the wire harness excess length absorbing device having the above-described structure, for example, when the wire harness is urged by closing the door, the second protector acts to reduce the size of the pantograph mechanism, and the first and the second protectors function. Two protectors are stored in the housing.

According to a fifth aspect of the present invention, there is provided the wire harness excess length absorbing device according to the first aspect, wherein the wire protector is rotatably provided on the first protector. An interlocking mechanism formed by a pair of gears for holding the wire harness to be inserted into one protector and a tooth form provided on the housing and meshing with the gear, and fixed to the second protector; The first protector is urged by the urging of the wire harness.

According to the wire harness excess length absorbing device having the above-described configuration, for example, when the wire harness is urged by closing the door, the wire harness is interlocked with the urging of the second protector to which the wire harness is fixed. When the gear of the first protector sandwiching is rotated, and this gear meshes with the tooth form provided in the housing, the first protector is pulled into the housing.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a wire harness excess length absorbing device according to the present invention will be described below in detail with reference to the drawings. 1 and 2 are perspective views showing the configuration and operation of the wire harness excess length absorbing device according to the first embodiment of the present invention, and FIG. 3 is a cross-sectional view showing the configuration and engagement structure of the first and second protectors. It is.

The wire harness excess length absorbing device 1A (hereinafter simply referred to as excess length absorbing device) 1A according to the first embodiment includes a rectangular housing 2 and a housing 2 2 and a housing 2 with the wire harness 3 covered, as shown by arrows A and B in FIGS. 1 and 2.
A first protector 4 provided reciprocally inside and outside the housing 2, housed in the housing 2, and drawn out;
A second protector 5 slidably attached to a side surface of the protector 4 and an elastic rib 6 elastically contacting the wire harness 3 to bend the wire harness 3 in an arc shape and to apply tension.

The entire length L of the housing 2 is set according to the absorption length of the wire harness 3, and the width W is set to the width of the wire harness 3.
The width is set substantially corresponding to the width. A wire harness 3 is provided at one end of the housing 2, that is, at the upper left side in the illustrated example.
A slit-shaped opening 7 for introducing the first and second protectors 4 and 5 into the housing 2 is formed at the other end of the housing 2, that is, at the lower right side in the illustrated example. The opening 8 is formed to movably fit the opening 8. Although the casing 2 preferably has a closed structure, a part of the casing 2 is opened in the drawing to explain the internal structure.

The first protector 4 has a plate-like appearance, and the total length La is set to be smaller than the total length L of the housing 2.
As shown in FIG. 3, the width Wa is the width W of the opening 8 of the housing 2.
It is set to approximately 1/2 of 1. A slit 11 is formed in the first protector 4 so that the wire harness 3 is sandwiched from the side and a width region approximately half the width of the wire harness 3 is inserted. The thickness t of the slit 11 is set slightly larger than the thickness ta of the wire harness 3. Accordingly, a gap g is formed between the wire harness 3 and the slit 11, and the wire harness 3 is loosely fitted in the slit 11.

As shown in FIGS. 1 and 2, a pair of upper and lower locking projections 12a and 12b project from one end of the first protector 4, that is, the end disposed in the housing 2. The first protector 4 does not fall out of the housing 2. The elastic rib 6 is integrally fixed to the upper end of the upper locking projection 12a. Elastic rib 6
Has a structure in which a pair of elastic members 13a and 13b support a contact member 14 made of rubber or the like that elastically presses the wire harness 3, and the pair of elastic members 13a and 13b has a bow for generating elastic force. And the base thereof is engaged with the locking projection 12.
a.

The wire harness 3 is introduced into the housing 2 through the opening 7 at one end and is wired over substantially the entire length L section of the housing 2 and then has no curvature, in other words, like thin paper. , And is bent and fitted into the first protector 4. The bending position of the wire harness 3 is fixed, and the contact member 14 of the elastic rib 6 is elastically urged between the bending position and the time when the wire harness 3 is inserted into the first protector 4. Therefore, as described above, the wire harness 3 is bent and deformed to a shape that can be said to be an arc shape or a curved shape with a constant tension until it is inserted into the first protector 4 from the bent position.

The second protector 5 has a plate-like appearance, the entire length Lb is set to be substantially the same as that of the first protector 4, and the width Wb is set to approximately １ ／ of the width W of the opening 8. . The second protector 5 has, like the first protector 4,
A slit 15 sandwiching the wire harness 3 from the side is formed.
, And there is no gap between the two. Therefore, the second protector 5 and the wire harness 3 are integrated. For example, when the wire harness 3 is pulled in the direction of arrow A in response to the opening operation of the door, the second protector 5
Is also drawn by arrow A. When the wire harness 3 is pushed in the direction of arrow B in response to the closing operation of the door, the second protector 5 is also urged in the direction of arrow B.

As described above, in response to the pulling or pushing operation of the wire harness 3, in other words, the second movement in accordance with the reciprocating movement.
The protector 5 also reciprocates integrally. Then, in a state where the first protector 4 and the second protector 5 are arranged in parallel, the entire area in the width direction of the wire harness 3 is covered by the first protector 4 and the second protector 5, as shown in FIG. It has become.

As described above, the first and second protectors 4 and 5 reciprocate through the opening 8 in the directions of arrows A and B. Further, the second protector 5 slides along the first protector 4. The first protector 4 is provided to be extendable.
For this reason, as shown in FIG. 3, an engagement structure 16 is formed on the joint surfaces of the first and second protectors 4 and 5 so as to engage with the concave and convex. That is, the first protector 4 is formed with the fitting groove 17 having a concave cross section, and the second protector 5 is formed with the engaging projection 18 having a convex cross section.

Then, the first and second protectors 4 and 5 are connected to each other by fitting the engagement projections 18 into the engagement grooves 17 as shown in FIG.
Can be relatively moved from the near side in the depth direction (B direction) and in the opposite direction (A direction), and are provided so as not to be able to come out of each other by locking means (not shown).
Therefore, the first and second protectors 4 and 5 are provided so as to be reciprocally movable with respect to the housing 2, and the second protector 5 is slidably movable with respect to the first protector 4.

Next, the operation of the excess length absorbing device 1A will be described. When the end of the wire harness 3 connected to the electrical component on the door side is pulled in the direction of arrow A shown in FIG. 1, that is, when the door of the automobile is opened, the second protector 5 integrated with the wire harness 3 is opened. Is pulled out of the housing 2.

However, since the bending position of the wire harness 3 is fixed in the housing 2, when the wire harness 3 is pulled, the contact member 14 is pressed in the direction of arrow A to fix the elastic rib 6. The first protector 4 is pushed out, so that the first protector 4 is pulled out from the housing 2 when viewed from the outside. That is, by pulling the wire harness 3, the first protector 4
, And the second protector 5 is extended from the first protector 4. Then, the wire harness 3 is pulled out while being protected by the first and second protectors 4 and 5.

On the other hand, when the door is closed, the wire harness 3 is pushed in the direction of arrow B, and the second protector 5 is urged in the direction of arrow B integrally therewith. The second protector 5 pushes the first protector 4 by the frictional force of the fitting structure 16, and as shown in FIG. 2, the first and second protectors 4 and 5 reduce the space in the reciprocating direction while reducing the housing. 2 is stored. As a result, as shown in FIG. 2, the extra length of the wire harness 3 pulled out from the housing 2 is absorbed into the housing 2. When the wire harness 3 is further urged in the direction of arrow B after the first protector 4 is housed in the housing 2, the second protector 5 is also housed in the housing 2, and the first and second protectors 5 are also housed. The protectors 4 and 5 are arranged in parallel in the opening 8.

Therefore, the total length L of the housing 2 is equal to the first and second lengths.
The total length La and Lb of the protectors 4 and 5 may be long enough to accommodate the amount of deflection of the wire harness 3, and the length (La + Lb + wire) when the first and second protectors 4 and 5 are stored in series. (The amount of deflection of the harness 3). As a result, the housing 2 can be downsized,
As a result, the overall size of the extra length absorbing device 1A can be reduced.

In the wire harness excess length absorbing device of the present embodiment, the wire harness 3 is absorbed in the housing 2 so that the wire harness 3 is not loosened between the vehicle body and the door, and the wire is disconnected due to the pinching of the door. Circuit and short circuit accidents due to peeling of the coating can be prevented beforehand, and safety and reliability can be improved.

Note that, in this embodiment, the first and second
Although the protectors 4 and 5 are provided, the number of protectors can be freely set according to the drawing-out dimension of the wire harness 3. That is, as the excess length absorbing device 1B, for example, as shown in FIG. 4, a third protector 19 may be further added to the second protector 5 so that the wire harness 3 can be drawn out at a longer interval while protecting the wire harness 3.

Even in this configuration, the joint surface Sa between the first protector 4 and the second protector 5 and the joint surface Sb between the second protector 5 and the third protector 19 are as shown in FIG. A fitting structure 16 is provided, and the wire harness 3 is fixed to a third protector 19. The configuration of the housing 2, the wiring state of the wire harness 3 in the housing 2, the configuration of the elastic rib 6, and the like may be the same as those in the first embodiment.

In this way, even if the number of protectors is increased, when the wire harness 3 is pulled out, the first protector 4, the second protector 5, and the third protector 19 move in the direction of arrow A as shown in FIG. The wire harness 3 moves and the protection of the wire harness 3 is performed.

On the other hand, the wire harness 3
When the wire harness 3 and the third protector 19 move integrally in the same direction, the second protector 5 and the first protector 4 move sequentially. The extra length of the wire harness 3 once pulled out is the housing 2
The wire harness 3 can be prevented from being loosened as described above, and the first, second, and third protectors 4
Since the housings 5 and 19 can be accommodated in a parallel state, the size of the housing 2 can be further reduced.

Next, a second embodiment of the present invention will be described in detail with reference to FIGS. FIG. 5 is a configuration diagram schematically illustrating the configuration and operation of the wire harness excess length absorbing device in the present embodiment, FIG. 6 is an enlarged perspective view of a main part showing an interlocking mechanism of the first and second protectors, and FIG. 8 is a sectional view taken along line AA, FIG. 8 is a sectional view taken along line BB of FIG. 6, and FIG.
It is a side view of the wire harness extra length absorption apparatus which shows the storage state of the protector. The main difference between the present embodiment and the first embodiment is that an interlocking mechanism is provided in the first and second protectors. Therefore, the same reference numerals are given to the same parts and portions as in the first embodiment, and the description will be omitted.

The surplus length absorbing device 1C in this embodiment is provided with an interlocking mechanism 21 for interlocking the first and second protectors 4 and 5. The interlocking mechanism 21 interlocks the first and second protectors 4 and 5 to move smoothly when the wire harness 3 is pulled out or pushed.

The interlocking mechanism 21 includes a first gear 22 and a second gear 23 rotatably provided at the side surface of the first protector 4, that is, at an opposing position corresponding to the bottom surface as described with reference to FIG. A belt 24 stretched between the first and second gears 22 and 23 and the casing 2 are meshed with the first gear 22.
The first tooth mold 25 formed on the side surface of the second protector 5 and the second tooth form 25 formed on the side surface of the second protector 5 so as to mesh with the second gear 23.
The tooth form 26 is provided. The belt 24 corresponds to the power transmission means in the present invention, and a chain or the like can be applied instead of the belt.

As shown in FIGS. 5 and 6, the first gear 22 is rotatably provided at one end of the first protector 4, that is, at the upper left end, and the second gear 23 is provided at the other end of the first protector 4.
That is, it is rotatably provided at the lower right end. Meanwhile, the first
The tooth mold 25 has a notch 27 formed on a side surface of the housing 2.
The first tooth mold 25 and the first gear 22 have a so-called rack-and-pinion structure. As shown in FIGS. 5 and 6, a protruding stopper 33 is provided at one end of the first tooth mold 25, and when the first protector 4 is pulled out from the housing 2 to the maximum. Is prevented from slipping out.

As shown in FIG. 7, the first gear 22 has a support shaft 28 attached to the first protector 4. A pulley portion 22a for looping around the belt 24 is provided integrally with the outside of the first gear 22. When the belt 24 is rotated, the entire first gear 22 including the pulley portion 22a moves in the running direction of the belt 24. Is rotationally biased. In addition, the wire harness 3 is provided in the slit 11 of the first protector 4 in a loosely fitted state, as in the first embodiment.

As shown in FIGS. 5 and 6, the second gear 23 is provided at the other end of the first protector 4, that is, at the lower right end thereof.
9 is attached to the first protector 4 so as to be rotatable. A pulley portion 23a for hanging the belt 24 is integrally provided outside the second gear 23,
When the belt 24 is rotated, the entire first gear 22 including the pulley portion 23a is urged to rotate in the running direction of the belt 24. The wire harness 3 is sandwiched between the second protectors 5 as in the first embodiment, and the wire harness 3
And the second protector 5 move integrally, that is, reciprocate in the directions of arrows A and B.

FIG. 6 shows one side of the second protector 5.
As shown in FIG. 8, a stepped portion 31 is formed, a linear second tooth form 26 is disposed over the entire top of the stepped part 31, and the second gear 23 and the second tooth form 26 mesh with each other. It is supposed to. That is, the second gear 23 and the second tooth mold 26 have a so-called rack and pinion structure.

An engaging structure 16 having a fitting groove 17 and an engaging projection 18 is provided on the joint surface of the first and second protectors 4 and 5 as in the first embodiment. I have. Further, a protruding stopper 32 is provided at one end of the second tooth form 26 as shown in FIG. 5 to prevent the second protector 5 from coming out when the second protector 5 is pulled out to the maximum from the first protector 4. To prevent it.

Next, the excess length absorbing device 1 in the present embodiment
The operation of will be described. Before the wire harness 3 is pulled out, that is, in the initial state of the excess length absorbing device 1C, the first and second protectors 4 and 5 are at positions shown by imaginary lines in FIG. If the wire harness 3 is connected to, for example, a door, the door is opened to open the door as shown in FIG.
And in the direction of arrow A shown in FIG. Therefore, the second
The protector 5 is also pulled in the direction of arrow A, and the second gear 23 meshed with the second tooth form 26 rotates in the direction of arrow C. As a result, the belt 24 runs in the direction of arrow D, and rotates the first gear 22 in the direction of arrow E. The first gear 22 is a first tooth mold 25
The first protector 4 is sent out in the direction of the arrow A because the first protector 4 is rotated while meshing.

Then, when the wire harness 3 is pulled out to the maximum and the second gear 23 is hooked on the stopper 32 as shown by the solid line in FIG. 5, the second protector 5 cannot be pulled out. 4 is also pulled out to the maximum, and the first gear 22 is hung on a stopper 33 formed at the end of the first tooth mold 25, and cannot be pulled out.

In this embodiment, the second gear 23 has a smaller diameter than the first gear 22, and the moving speed of the first protector 4 is slower than the moving speed of the second protector 5. The difference between the diameters of the first and second gears 22 and 23 is determined by the length of the first and second protectors 4 and 5, the difference in the moving distance, and the like. If there is no difference between the lengths of 4, 5 and the moving distance, the diameters can be the same.

On the other hand, when the door is closed, the extra length of the wire harness 3 is absorbed as follows. In this case, the wire harness 3 is moved from the state shown by the solid line in FIG.
Direction, the second protector 5 is also integrated with the arrow B
Pushed in the direction. As a result, the second gear 23 rotates in the direction of arrow Ca, and the belt 24 travels in the direction of
The gear 22 is rotated in the direction of the arrow Ea. Therefore, when the wire harness 3 is pushed in the direction of arrow B, at the same time, the second protector 5 and the first protector 4 move in the direction of arrow B, and the wire harness 3 is sent into the housing 2 to absorb the extra length. Progresses.

When the first and second protectors 4 and 5 move from the position shown by the solid line in FIG. 5 to the position shown by the imaginary line, the feeding of the wire harness 3 becomes impossible, and Is absorbed in the housing 2 and the extra length absorption of the wire harness 3 is completed. In addition, the first and second
Since the protectors 4 and 5 are housed in the housing 2 in a parallel state as described above, the size of the housing 2 can be reduced.

As shown in FIG. 9, when the extra length of the wire harness 3 is absorbed, that is, when the wire harness 3 is pulled out from the direction of arrow B in the state shown by the imaginary line in FIG. As shown, the first and second protectors 4 and 5 are fitted in the opening 8. In the present embodiment, since the cutout portion 27 is formed on one side surface of the housing 2, at first glance, the first and second protectors 4 and 5 appear.
Seems to be unstable, but both ends
a and 27b are fitted and stabilized.

As described above, in the extra length absorbing device 1C of the present embodiment, the first and second wires harness 3 are pulled out from the housing 2 and sent into the housing 2 in correspondence with the first and second wires.
The protectors 4 and 5 can be driven by the interlocking mechanism 21. Therefore, the surplus length of the wire harness 3 is reliably absorbed, and the reliability of a device to which the surplus length absorbing device 1C is applied can be improved.

Next, a third embodiment of the present invention will be described in detail with reference to FIGS. 10 is a perspective view showing the configuration of the excess length absorbing device according to the present embodiment, FIG. 11 is a cross-sectional view taken along the line CC of FIG. 10, and FIG. The main difference between the present embodiment and the second embodiment is that the configuration of the interlocking mechanism is changed. Therefore, the same parts as those in the previous embodiments are denoted by the same reference numerals. Is omitted.

In the excess length absorbing device 1D of the present embodiment, a pantograph structure 36 is applied as the interlocking mechanism 35, and the interlocking mechanism 35
6 and a structure related to guide grooves 39 and 41 described later. The pantograph structure 36 is formed by combining a plurality of plate-like bodies 37 in an X-shape, and rotatably connecting the respective intersection positions by connecting pins 38.
The tip of the left end plate-like body 37a is rotatably attached to a part of the housing 2 by a locking pin 38a.

At substantially the center of the pantograph structure 36, a guide pin 38b serving as a connecting pin is provided.
The tip of the first protector 4 is movably inserted into a guide groove 39 provided in the longitudinal direction. The structure related to the guide pin 38b and the guide groove 39 will be described later in detail with reference to FIGS. A guide pin 38c is provided at the tip of the right end plate-like body 37b, and the tip is movably inserted into a guide groove 41 provided in the vertical direction of the second protector 5.

Next, the guide pin 38b and the guide groove 39
Will be described with reference to FIGS. 11 and 12. FIG. The guide pin 38b includes a locking portion 42a that penetrates the two plate-like bodies 37 and forms a flange for preventing escape, and a shaft portion 42b that penetrates the guide groove 39.
And a locking portion 42c for preventing the entire guide pin 38b from coming out of the guide groove 39.

The guide groove 39 is formed to be vertically long so as to slide the shaft portion 42b up and down, and its width Wa is set to be slightly wider than the shaft portion 42b as shown in FIG. The diameter is set smaller than that of the stop portion 42c. Therefore, even if the plate-like body 37 moves from the open state shown by the solid line to the closed state shown by the imaginary line, the guide pin 38b
Does not come out of the guide groove 39,
It can move smoothly along.

The guide pins 38c and the guide grooves 41
The guide pin 38c moves up and down smoothly along the guide groove 41 in accordance with the closing and opening of the plate-like body 37. The first and second protectors 4 and 5 are slidably engaged by the engagement structure 16 as in the previous embodiments, and the wire harness 3 is sandwiched between the second protector 5 and the first protector 4. 4 is connected in a loose fit state.

Next, the excess length absorbing device 1 in the present embodiment
The operation of D will be described. When the wire harness 3 is pulled out in the direction of the arrow A in the same manner as described above, the second protector 5 is also pulled in the direction of the arrow A, and the plate-like body 37c constituting the pantograph structure 36 is also pulled out. By the way, one end of the plate-like body 37a of the pantograph structure 36 is
8a rotatably attached to the housing 2. Therefore, when the second protector 5 is pulled in the direction of arrow A, the pantograph structure 36 opens according to the amount of pull-out as shown by the solid line in FIG. That is, the guide pin 38b moves downward along the guide groove 39 and urges the first protector 4 in the direction of arrow A.
The second protector 5 also moves in response to the movement of. Therefore, the wire harness 3 is drawn out of the housing 2 while being protected by the first and second protectors 4 and 5.

On the other hand, when the wire harness 3 is pushed in the direction of arrow B in response to the closing of the door, the second protector 5 is also pushed together, and the pantograph structure 36 will be closed by the action of the guide pin 38c and the guide groove 41. And Then, by continuing pushing in the direction of arrow B, the guide pin 38c moves below the guide groove 41, and the guide pin 38b also moves from the position shown by the solid line in FIG. 12 to the position above the guide groove 39 shown by the imaginary line. It moves and urges the first protector 4 in the direction of arrow B. Therefore, the first and second protectors 4 and 5 are integrated, and both are put in a side-by-side state and pushed into the housing 2.

As a result, the wire harness 3 is protected by the first and second protectors 4 and 5 not only when the wire harness 3 is pulled out but also when the extra length is absorbed, so that damage to the wire harness 3 is reliably prevented. In addition to the above, the same effects as described above can be obtained. In addition, the surplus length absorption device 1D in the present embodiment can be modified as follows. That is, the position P shown in FIG.
1, the plate-like body 37 is attached to the housing 2, the guide pin 38 is rotatably locked to the side of the first protector 4 at a position P2, and the guide pin 38 is rotated to the side of the second protector 5 at a position P3. Lock as much as possible.

According to this configuration, the positions P1, P2, P3
Moves according to the opening and closing of the pantograph structure 36, so that the first and second protectors 4 and 5 can be moved in the directions of arrows A and B in the same manner as described above. Moreover, the position P
The guide pins 38b and 38c do not move up and down in accordance with the opening and closing of the pantograph structure 36 for 1, P2 and P3.
Since the guide grooves 39 and 41 become unnecessary, the structure can be simplified and the cost can be reduced.

Next, a fourth embodiment of the present invention will be described in detail with reference to FIGS. FIG. 13 is a side view schematically showing the configuration of the excess length absorbing device in the present embodiment, and FIG. 14 is an enlarged side view of the main part showing the configuration of the interlocking mechanism.
The main differences between this embodiment and the previous embodiments are as follows.
Since the configuration of the interlocking mechanism has been changed, the same parts as those in the previous embodiments are denoted by the same reference numerals, and description thereof will be omitted.

The extra length absorbing device 1E in the present embodiment is
As shown in FIG. 13, the interlocking of the first and second protectors 4 and 5 is performed by an interlocking mechanism 45 provided in the housing 2. The interlocking mechanism 45 is rotatably attached to a pair of upper and lower locking projections 12a and 12b provided at one end of the first protector 4, and is a pair of upper and lower gears 46 that sandwich the wire harness 3 from both sides.
a, 46b, and a tooth pattern 47 formed linearly on the bottom surface of the housing 2 and meshing with one of the gears 46b.

The pair of upper and lower gears 46a and 46b is not provided over the entire area of the wire harness 3 in the width direction, but is so provided as to partially sandwich the side portion of the wire harness 3 as shown in FIG. Has become. This is a consideration for preventing a conductive member, a wire, or the like provided on the wire harness 3 from being pinched.

In this embodiment, as shown in FIG. 14, a part of the gear 46b is exposed from an opening formed at the bottom of the locking projection 12b. Then, by assembling the first protector 4 to the housing 2, the exposed portion of the gear 46b meshes with the tooth form 47 as shown in FIG. The wire harness 3 is sandwiched by the second protector 5 and is loosely fitted to the first protector 4, as in the above embodiments.

Next, the operation of the excess length absorption by the excess length absorbing device 1E will be described. Similarly to the above, when the door is opened, for example, the wire harness 3 and the second protector 5 are integrally pulled in the direction of arrow A shown in FIG. Accordingly, a pair of upper and lower gears 46a, 4 sandwiching the wire harness 3 is provided.
6b is rotated, and the first protector 4 is advanced in the direction of arrow A by meshing with the tooth form 47. As a result, the wire harness 3 and the first and second protectors 4 and 5 appear as if they were pulled out of the housing 2.

On the other hand, for example, when the door is closed, the wire harness 3 and the second protector 5 are pushed in the direction of arrow B. When the wire harness 3 is pushed, the gear 46
The first and second protectors 4a and 46b rotate in the opposite direction to the above case, and cause the first protector 4 to retreat in the arrow B direction. Therefore, in response to the closing of the door, the wire harness 3 and the first and second protectors 4 and 5 are stored in the housing 2 and the wire harness 3
Is absorbed.

As described above, the excess length absorbing device 1 of the present embodiment
By providing the interlocking mechanism 45, the first and second protectors 4 and 5 cooperate with each other when the wire harness 3 is pulled out and pushed in. Therefore, the wire harness 3
Is the first in both withdrawal and extra length absorption.
And the second protectors 4 and 5 surely protect the equipment, to which the extra length absorbing device 1 is applied, to improve the reliability of the equipment, and to reduce the size of the housing 2 as described above.

[0071]

As described above, in the wire harness excess length absorbing device according to the present invention, the wire harness introduced from one end of the housing is bent and fixed at a fixed position, and is urged by the elastic rib. It is led out of the housing while being fitted into the first protector from the opening formed at the other end. The first protector is provided so as to be able to reciprocate in the opening, in other words, to be able to pull out and push in from the housing. Also, the second protector slides along the first protector.
Since the protector is provided and the wire harness is fixed to the second protector, the wire harness withdrawal amount is the sum of the lengths of the first and second protectors. However, when the wire harness is pushed in, the first and second protectors are housed side by side in the housing, so that the housing does not need to store the entire length of the two protectors, and the entire device can be downsized. Can be. Further, since tension is applied to the wire harness in the housing, the wire harness does not hit another member in a bent state, and the generation of abnormal noise can be reduced.

Further, by providing an interlocking mechanism using a gear and a tooth form, an interlocking mechanism using a pantograph mechanism, and the like between the first and second protectors, the first and second protectors are interlocked with the pulling and pushing of the wire harness. Since the protector can be moved, the reciprocating motion of the first and second protectors is ensured, and the size of the housing and the overall size of the wire harness excess length absorbing device are reduced as described above. The reliability of the equipment to which the long absorption device is applied can be improved.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of a wire harness excess length absorbing device of the present invention.
It is a perspective view showing a situation at the time of pulling out a wire harness in an embodiment.

FIG. 2 shows a first embodiment of the wire harness excess length absorbing device of the present invention.
It is a perspective view showing a situation at the time of absorption of a wire harness in an embodiment.

FIG. 3 is a sectional view of a main part showing a configuration of a wire harness excess length absorbing device.

FIG. 4 is a perspective view showing a modified example of the protector.

FIG. 5 shows a second embodiment of the wire harness excess length absorbing device of the present invention.
It is a schematic diagram which shows an embodiment.

FIG. 6 is an enlarged perspective view illustrating a main part of the wire harness excess length absorbing device of FIG. 5;

FIG. 7 is a cross-sectional view showing a configuration of a first gear of the wire harness excess length absorbing device of FIG.

8 is a cross-sectional view illustrating a configuration of a second gear of the wire harness excess length absorbing device of FIG.

FIG. 9 is a side view showing a storage state of first and second protectors of the wire harness excess length absorbing device of FIG. 5;

FIG. 10 is a perspective view showing a third embodiment of the wire harness excess length absorbing device of the present invention.

FIG. 11 is a sectional view taken along line CC of FIG. 10;

FIG. 12 is an enlarged side view showing the operation of the pantograph structure.

FIG. 13 is a side view showing a fourth embodiment of the wire harness excess length absorbing device of the present invention.

FIG. 14 is a perspective view showing a main part of a first protector of the excess wire length absorbing device of FIG. 13;

FIG. 15 is a perspective view showing an example of a conventional wire harness excess length absorbing device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 wire harness excess length absorbing device 2 housing 3 wire harness 4 first protector 5 second protector 6 elastic rib 14 contact member 16 engagement structure 21, 35, 45, 51, 55 interlocking mechanism 22 first gear 23 second Gear 24 Belt 25 First tooth mold 26 Second tooth mold 36 Pantograph structure 37 Plate 38 Connecting pin 47 Tooth mold

Claims (5)

[Claims] 1. A housing for storing a wire harness introduced through an opening provided at one end in a bent state and leading out of the opening provided at the other end, and fitted into the opening provided at the other end. And a first protector that reciprocates inside and outside the housing with the wire harness covered, wherein the first protector covers and secures the wire harness. A second protector slidably attached to a side surface and moving along the reciprocating direction of the first protector by biasing of the wire harness is provided, and the first protector and the second protector are biased by the wire harness. 2. The wire harness extra length absorption, wherein the protector draws the wire harness out of the housing and stores the wire harness in the housing. Location. 2. A state in which the wire harness is folded and fixed at a fixed position in the housing, and is tensioned by contact of an elastic rib reciprocating integrally with the first protector from the folded position. 2. The battery according to claim 1, wherein the first protector is inserted into the first protector.
The wire harness excess length absorbing device as described in the above. 3. A first and a second gear rotatably provided on the first protector, and a second tooth provided on the second protector and rotating the second gear by reciprocation of the second protector. A power transmission means for transmitting the rotation of the second gear to the first gear; a first tooth mold provided on the housing and reciprocating the first protector by the rotation of the first gear; 2. The wire harness excess length absorbing device according to claim 1, further comprising an interlocking mechanism configured by the following. 4. The first and second protectors are provided by a pantograph mechanism which has one end of the housing and one of the first and second protectors as a fixed end and expands and contracts in a reciprocating direction of the first and second protectors. 2. The wire harness excess length absorbing device according to claim 1, wherein the reciprocating motion is linked. 5. A pair of gears rotatably provided on said first protector and sandwiching said wire harness inserted into said first protector, and teeth provided on said housing and meshing with said gears. The wire harness extra length according to claim 1, further comprising an interlocking mechanism configured by a mold, wherein the first protector is urged by the urging of the wire harness fixed to the second protector. Absorber.