JP5049690B2 - Wire harness protection tube - Google Patents

Description

  The present invention relates to a wire harness protection tube.

  Conventionally, a plurality of hollow unit tubes that are open at both ends for inserting wire harnesses are connected along the insertion direction of the wire harnesses. For example, when protecting a wire harness stretched around an automobile, the wire There is known a wire harness protection tube in which a harness is accommodated (wired) inside.

In the wire harness protection tube, the unit tube has a two-piece structure and has a bottom plate and a pair of side walls raised from both ends of the bottom plate and facing each other, and a fitting recess is formed at the upper end of the pair of side walls. A main body provided, and a lid having a top plate that closes the open upper portion of the main body, and a lid provided with a pair of fitting shafts that fit into the fitting recesses at both ends of the top plate, The one fitting shaft is detached from the one fitting recess, and the lid is opened around the other fitting shaft fitted in the other fitting recess, or both fittings are performed. There is one in which both the fitting shafts are detached from the recesses, and the lid is completely removed from the main body, thereby enabling the wiring from the side surface (for example, see Patent Document 1).
JP 2004-153926 A

  In the above conventional wire harness protection tube, since the unit tube has a two-piece structure, when passing, the lid is opened with the other fitting recess and the other fitting shaft fitted to the main body. If it is, the lid cannot be securely held in the open position unless it is pressed by hand, which is difficult to work and takes time. On the other hand, when the lid is completely removed from the main body, the work can be performed, but it is necessary to remove the lid from the main body before passing through the lid and then attach it to the main body again after passing through the lid. Wiring takes time and labor. In addition, there is a risk of accidentally dropping the lid, for example, in the vehicle or engine room when opening / closing the lid, and in this case, the dropped lid must always be found and removed no matter how much time and effort it takes. In addition, a unit tube in which the main body and the lid are not properly fitted due to a dimensional error or the like is generated, and the lid may fall off from the main body due to vibration or the like in use, and the wire harness protection function may be impaired. Further, since the main body and the lid are separately formed on the manufacturing side and assembled into a unit tube after forming, the cost increases. There are problems such as.

  The present invention has been made in view of the problems as described above, and the purpose thereof is to easily and quickly perform the wiring of wire harnesses with good workability and to protect the wire harnesses in use. An object of the present invention is to provide an easy-to-manufacture and inexpensive wire harness protection tube that can prevent the function from being damaged.

  In order to achieve the above object, the wire harness protection tube according to the first aspect of the present invention includes a plurality of hollow unit tubes having both ends opened in order to allow the wire harnesses to pass therethrough along the insertion direction of the wire harnesses. A wire harness protection tube, wherein the unit tube includes a bottom plate and a main body having a pair of side walls raised from both ends of the bottom plate and facing each other, a lid for closing an open upper portion of the main body, A hinge between the end of the side wall and one end of the lid that connects the lid to the main body so that the lid can be opened and closed continuously, and the other side wall and the other end of the lid are separably coupled. A pair of main body side engaging portions and lid side engaging portions (lock mechanism for fixing the lid in the closed position), one end connected to the one side wall, and the other end connected to one end side of the lid Hold the lid in the open position A spring, a is obtained by a structure which is a thermoplastic synthetic resin molded article comprising the integrally.

According to the above Ki構 formed, the unit tube has a one-piece structure and cover opening holding function. In this way, the unit tube, which has been a two-piece structure of the main body and the lid, is made into one piece and the lid opening holding function is added to solve the problems of the conventional wire harness protection tube. Can be performed easily, quickly and appropriately with good workability, and the wire harness protection tube which is easy to manufacture and inexpensive can prevent the protection function of the wire harnesses from being damaged in use.

Moreover, in the wire harness protection tube of the invention according to claim 1 , the lid has a top plate and a pair of end walls that are suspended from and opposed to both ends of the top plate, and the end walls are The height is lower than the side wall of the main body .

According to the above Ki構 formed, against the side wall end portion and the end wall edge of the lid body in a vertical direction are joined to the main body and the lid at the side of the unit tube, the integrity of the body when the cover is closed It is possible to improve the reliability of the lid closing and holding function by the pair of main body side engaging portions and the lid side engaging portion, so that the wire harness protection tube having a higher protection function can be obtained. Further, since the outer shape of the lid is not so large, the wire harnesses can be easily, quickly and appropriately routed with good workability by holding the lid in the open position even in a narrow space .

In the wire harness protection tube of the invention according to claim 1 , the other side wall includes a bent portion having a crank-like cross-sectional shape, and a stepped surface that overlaps the end surface of the other end wall, and the other side wall. An extended side wall that overlaps the inner surface of the end wall, the extended side wall includes the main body side engaging portion, the other end wall includes the lid side engaging portion, and the other side wall and the By pressing one of the other end walls inward, the main body side engaging portion and the lid side engaging portion that are engaged with each other are separated .

According to the above Ki構 formed, it is possible to increase the engagement area of the body side engaging portion and the lid-side engaging portion, can be bonded at two sides of the open end side of the lid body, the lid Since it can be securely fixed (locked) in the closed position and the reliability of the lid closing holding function by the main body side engaging portion and the lid side engaging portion can be improved, the wire harness protection having a higher protection function It can be a tube. On top of that, the main body side engaging part and the lid side engaging part that are engaged with each other can be easily disengaged (unlocked) and slightly opened by one touch. It can be set as the wire harness protection tube which is excellent in the property, and has better workability .

Wiring-harness protective tube in the embodiment described in claim 2 is the wiring-harness protective tube in the embodiment described in the claim 1, and the body side engaging portion are engaged with each other the cover-side engaging portion The bottom plate or the top plate continuously connecting the walls to be pressed when being detached is curved so that the inner surface is concave and the outer surface is convex, and the walls are bent by the deformation of the bottom plate or the top plate. The side engaging portion and the lid side engaging portion are configured to swing in the engagement / disengagement direction .

According to the structure of the said Claim 2 , it suppresses that concentrated stress arises in the base of the wall etc. which are pressed when releasing the main body side engaging part and the lid side engaging part which are mutually engaged. This can prevent breakage of the wall, can prevent the lid holding function from lowering / disappearing due to bending, and can be a durable wire harness protection tube for rough handling. .

The wire harness protection tube of the invention described in claim 3 is the wire harness protection tube of the invention described in claim 1 or 2 , wherein the main body side engaging portion is provided on an inner surface provided on an outer surface of the extension side wall. An engaging recess that does not reach the inner surface, and the lid-side engaging portion is an engaging claw that partially bulges the inner surface of the other end wall to close the lid When the engaging claw slides while pressing the outer surface of the extended side wall inwardly with the inclined surface on the inner surface of the engaging claw, the other end wall end surface overlaps the step surface. By being opposed to the engagement hole or the engagement recess, the engagement hole or the engagement recess is automatically fitted with the return of the extension side wall, and is engaged with the extension side wall in the opening direction of the lid. It is set as the structure which carries out.

According to the configuration described in claim 3, simply by automatically be closing operation capped with one-touch, and can be reliably secured in the closed position (locking), excellent operability of the lid, better wire-passing It can be set as the wire harness protection tube which has workability | operativity.

Wiring-harness protective tube in the embodiment described in claim 4 is the wire harness protecting tube of the invention described in claim 3, wherein the bottom plate, the inner surface is concave, exterior surface is curved to be convex, the bottom plate The other side wall and the extended side wall are integrally swung in the engagement / disengagement direction of the pair of engagement holes or engagement recesses and locking claws by bending deformation.

According to the structure of the said Claim 4, when the main body side engaging hole or engaging recessed part and lid | cover side engaging claw are made to detach | leave , the other side wall of the main body side pressed Concentrated stress can be prevented from occurring at the root, etc., and the other side wall of the main body can be prevented from being broken, and the lid holding function can be prevented from being lowered or lost due to bending. It can be set as the wire harness protection tube which is durable also in handling.

Wiring-harness protective tube of the invention described in claim 5, in the wire harness protecting tube of the invention according to any one of the claims 1 to 4, wherein the spring is pivot beyond a predetermined opening angle by the action The lid is urged to the closed position until exceeding the predetermined angle, and when the predetermined opening angle is exceeded, the lid is urged to the open position, and the predetermined opening angle is set within a range of 10 degrees to 90 degrees. It is a configuration.

According to the configuration described in claim 5, mutually Following engaging and main assembly side engaging portion and the operation of separating the lid-side engaging portion and opening the lid slightly, urging of the spring after Since the lid can be moved to the open position by the force and held, the wire harness protection tube having excellent operability of the lid and better line workability can be obtained.

Wiring-harness protective tube in the embodiment described in claim 6 is the wiring-harness protective tube of the invention according to any one of the claims 1 to 5, wherein the spring, when said lid is in a closed position Is formed in a plate shape having a length longer than the distance between the side wall-side fixed end and the lid-side fixed end that are vertically opposed to each other, and receives a compressive load along the length direction when the lid is in the closed position. When the intermediate portion is erected in a mountain shape outwardly between the sidewall side fixed end and the lid side fixed end and the lid is in the open position inverted from the closed position, the length direction The one side facing the spring when the lid is in the closed position, and is laid in an inverted U shape between the side wall side fixed end and the lid side fixed end that are bent sideways and lined sideways On the outer surface of the side wall and the outer surface of one end of the lid Is obtained by a configuration in which a recess for inverting the bulge of the spring on the inside.

According to the structure of the said Claim 6 , 1 unitization of a unit tube can be implemented, adding a lid open holding function. In addition, since the lid opening and holding function can be reliably obtained with a simple spring shape, the reliability of the lid opening and holding function can be improved without impairing the manufacturability of the wire harness protection tube, and a higher lid opening function can be achieved. It can be set as the wire harness protection tube which has a holding function .

Wiring-harness protective tube in the embodiment described in claim 7 is the wire harness protecting tube of the invention according to any one of the claims 1 to 6, wherein the spring is a symmetrical position to sandwich the hinge It is set as the structure provided .

According to the configuration of the seventh aspect , the lid can be urged in a balanced manner by a symmetric double spring across the hinge so that the lid can be stably opened and held in the open position. It can be set as the wire harness protection tube which has a function .

Wiring-harness protective tube of the invention claimed in claim 8, in the wire harness protecting tube of the invention according to any one of the claims 1 to 7, wherein the unit tube, positioning the lid in the open position It is set as the structure shape | molded by the made initial shape .

According to the configuration described in claim 8, compressive force on the inner surface of the spring in the closed state of the lid, with a tensile force is applied to the outer surface, the compressive force on the inner surface to the hinge, since a tensile force is applied to the outer surface, the spring Can be given more elasticity to hold the lid in the open position, and the hinge can also be given elasticity to hold the lid in the open position, and has a higher lid opening holding function It can be set as a wire harness protection tube.

Wiring-harness protective tube of the present invention according to claim 9, in the wire harness protecting tube of the invention according to any one of the claims 1 to 8, wherein each of said bottom plate of said plurality of unit tubes, A plurality of unit tubes are integrally attached to a lower surface or an upper surface of a flexible strip-shaped connecting member formed by injection filling and solidifying a thermoplastic synthetic resin in the same mold cavity as the unit tube, A plurality of unit tubes are connected at a predetermined pitch interval .

According to the structure of the said Claim 9 , since the product of a wire harness protection tube can be obtained only by shaping | molding and an assembly is not required, it can be set as a wire harness protection tube which is easier to manufacture and cheap .

  As described above, the wire harness protection tube according to the present invention can be easily and inexpensively manufactured by making the unit tube into one piece, which has been a two-piece structure of the main body and the lid, and adding a lid opening holding function. In addition, the wiring of the wire harnesses can be performed easily, quickly and properly with good workability, and the protection function of the wire harnesses can be prevented from being damaged in the state of use. This is an effect.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing a wire harness protection tube according to an embodiment of the present invention, FIG. 2 is a side view showing a state where the wire harness protection tube is bent with a minimum bending radius, and FIG. (A) Front view showing unit tube, (B) Side view, (C) Cross sectional view, FIG. 4 is a partially enlarged cross sectional view showing a hinge part of the unit tube, and FIG. FIG. 6 is a partially enlarged sectional view showing a lid opening holding portion (spring part) of the unit tube, and FIG. 7 is a sectional view showing a lid unlocking operation of the unit tube. 8 is a cross-sectional view showing a state in which the lid of the unit tube is opened in the open position, FIG. 9 is a perspective view of the state in which the lid of the unit tube is opened in the open position, and FIG. 10 is a perspective view of the unit tube. Oblique state with lid open Is a perspective view from below.

  1 to 3, the wire harness protection tube 1 of the present embodiment flexes a hollow unit tube 2 that is open at both front and rear ends in order to insert, for example, wire harnesses (not shown) stretched around an automobile. A plurality of wire harnesses are inserted in the insertion direction (front-rear direction) indicated by arrows a and b in FIG.

  The unit tube 2 includes a main body 7 having a bottom plate 4 and a pair of left and right side walls 5, 6 that are raised from both left and right ends of the bottom plate 4, a top plate 8 that faces the bottom plate 4, and left and right sides of the top plate 8. A lid 11 having a pair of left and right end walls 9, 10 suspended from both ends and closing the open upper portion of the main body 7, an upper end portion of the left side wall (one side wall) 5, and a left end wall 9 (of the lid 11 A hinge 12 that is connected to the main body 7 so that the lid 11 can be opened and closed continuously, and an upper end portion of the right side wall (the other side wall) 6 and a right end wall 10 (other than the lid 11). A pair of main body side engaging portions and a engaging claw 14 (lid 11 is closed as shown in FIGS. 1 to 3). A locking mechanism for fixing the lid 11 to the position), the upper end is connected to the left side wall 5, the lower end is connected to the left end wall 9, and the lid 11 is opened as shown in FIGS. A thermoplastic synthetic resin molded article provided integrally with a pair of springs (cover opened holding member) 15 and 16 for holding, to (fully closed position).

  The bottom plate 4 is curved so that the inner surface is concave and the outer surface is convex, and a fitting groove 18 for fitting the connecting member 3 is formed in the center of the inner surface of the bottom plate 4 from the front end surface to the rear end surface of the bottom plate 4. Provided. The left and right side walls 5 and 6 are raised from the left and right ends of the bottom plate 4 while being slightly inclined outward. On the other hand, the top plate 8 is curved with a slightly larger curvature than the bottom plate 4 so that the inner surface is concave and the outer surface is convex. The left and right end walls 9 and 10 are suspended from the left and right end portions of the top plate 8 with the same inclination as the left and right side walls 5 and 6 and slightly inclined outward. The left and right end walls 9 and 10 are significantly lower in height than the left and right side walls 5 and 6, and the lid 11 is significantly shallower than the main body 7 and has a low profile (small size).

  Next, a specific configuration of the hinge portion of the unit tube 2 will be described. As shown in FIGS. 3C, 4, and 7 to 9, the end surface 19 at the upper end of the left side wall 5 and the end surface 20 at the lower end of the left end wall 9 are when the lid 11 is closed (when fully closed). It is formed on a flat surface that is joined horizontally. The hinge 12 is formed in a plane-symmetrical shape (a trapezoidal shape in the figure) with each of the end surfaces 19 and 20 when the lid 11 is closed, that is, an extended surface of the horizontal joining surface, and the outer surface of the upper end portion of the left side wall 5 And formed across the outer surface of the lower end portion of the left end wall 9.

  Accordingly, the lid 11 is reversed (opened) by 180 degrees in the direction of arrow c in FIG. 8 from the closed position (fully closed position) to the hinge 12 as a fulcrum, and is opened to the open position (fully opened position) shown in FIGS. Can do. When the lid 11 is opened to the open position, the end surfaces 19 and 20 and the inner surface of the hinge 12 are deployed horizontally and become flush as shown in FIG. The hinge 12 connects the upper end portion of the left side wall 5 and the lower end portion of the left end wall 9 of the lid 11 in a continuous and integrated manner, not only the full width (front / rear width) thereof.

  Further, a stopper wall 21 when the lid 11 is closed from the open position to the closed position is vertically raised along the inner surface of the left side wall 5 on one end surface 19 connected to the inner surface of the hinge 12. In this portion, a stopper recess 22 is formed with one end connected to the inner surface of the hinge 12 so that the stopper wall 21 is fitted when the lid 11 is closed.

  As a result, the joining cross-sectional shape of the end surface 19 at the upper end of the left side wall 5 and the lower end of the left end wall 9 when the lid 11 is closed becomes a Z shape, and the main body 7 and the lid 11 are positioned in the left-right direction. Further, the main body 7 and the lid 11 are positioned in the front-rear direction by fitting the stopper wall 21 and the stopper recess 22.

Next, a specific configuration of the lid closing holding part (locking mechanism part) of the unit tube 2 will be described. As shown in FIGS. 3A, 3C, 5 and 7-9, the upper portion of the right side wall 6 is provided with a bent portion 23 having a crank-like cross section, and the right end when the lid 11 is closed. A step surface 25 that is a horizontal flat surface that overlaps the end surface 24 of the wall 10 and an extended side wall 26 that overlaps the outer surface of the inner surface of the right end wall 10 are provided. The step surface 25 is at the same height as the end surface 19 at the upper end of the left side wall 5. The extension side wall 26 is slightly lower than the left and right end walls 9 and 10.

  The engaging claw 14 is formed by partially bulging the inner surface of the right end wall 10, and as shown in FIG. 5, the inner surface of the engaging claw 14 has an inclined surface 27 inclined inwardly from the bottom to the top. The engaging surface 28 which is a horizontal flat surface is formed in the upper part of the engaging claw 14. The inclined surface 27 extends obliquely upward and continuously from the round 29 on the inner surface side of the lower end portion of the right end wall 10 without any step.

  The engagement hole 13 is a hole that penetrates the inner and outer surfaces provided at a position facing the engagement claw 14 when the lid 11 of the extended side wall 26 is closed. The lower peripheral wall surface of the engagement hole 13 is flush with the step surface 25.

  The engagement hole 13 and the engagement claw 14 constitute a lock mechanism that fixes the lid 11 in the closed position. Thus, when the engaging claw 14 closes the lid 11 from the open position to the closed position, the engaging claw 14 slides while pressing the outer surface of the extended side wall 26 inward with the inclined surface 27 of the engaging claw 14, and then the right end wall 10. When the end surface 24 overlaps and joins the step surface 25 and faces the engagement hole 13, the engagement surface of the engagement claw 14 automatically engages with the engagement hole 13 as the extended side wall 26 returns. 28 is opposed to the upper peripheral wall surface of the engagement hole 13 from below, and is engaged with the extended side wall 26 in the direction in which the lid 11 is opened, and the lid 11 is fixed in the closed position.

When the lid 11 is unlocked, as shown in FIG. 7, the right side wall 6 is pressed inward, and the extension side wall 26 is pulled away from the right end wall 10 by the pressing force W to engage the engaging claw 14. The inside of the joint hole 13 is pulled out, and the engaging hole 13 and the engaging claw 14 engaged with each other are separated. In this unlocked state, the lid 11 is reversed (opened) 180 degrees in the direction of arrow c in FIG. 8 from the closed position (fully closed position) with the hinge 12 as a fulcrum, and the open position (fully opened position) shown in FIGS. Will be able to open .

In addition, in the wire harness protection tube 1 of this Embodiment, although the bending part 23 was provided in the main body 7 side, you may provide in the lid | cover 11 side. Further, although the engagement hole 13 and the engagement claw 14 are provided with the engagement hole 13 on the main body 7 side and the engagement claw 14 on the lid 11 side, they may be provided in reverse. Further, although the engaging hole 13 reaching the inner surface with the outer surface of the extension side wall 26 as an engaging portion that engages with the engaging pawl 14 does not reach the inner surface with the outer surface of the extension side wall 26 locking recess (Dadashi , having a depth engaging pawl 14 is fitted) may be used.

  Next, a specific configuration of the lid opening holding portion (spring portion) of the unit tube 2 will be described. As shown in FIGS. 3A, 6, 8, and 9, a body-side front concave portion 30 having a certain depth with a front portion and an upper portion being opened is provided on the outer surface of the upper end portion of the left side wall 5 in front of the hinge 12. In addition, a body-side rear concave portion 31 having a predetermined depth with a rear portion and an upper portion opened is provided on the outer surface of the upper end portion of the left side wall 5 behind the hinge 12. Each of the recesses 30 and 31 is formed in line symmetry with the center line of the hinge 12 as a symmetry line, and is provided at a position that is symmetrical in the front-rear direction with the hinge 12 interposed therebetween. A lid-side front concave portion 32 having a constant depth is provided on the outer surface of the lower end portion of the left end wall 95 on the front side of the hinge 12, and the rear portion and the lower portion are provided on the outer surface of the lower end portion of the left end wall 9 on the rear side of the hinge 12. A lid-side rear concave portion 33 having a constant depth is opened. Each of the recesses 32 and 33 is formed symmetrically with the center line of the hinge 12 as a symmetric line, and is provided in a longitudinally symmetrical position across the hinge 12. The body-side front recess 30 and the lid-side front recess 32 and the body-side rear recess 31 and the lid-side rear recess 33 are formed symmetrically with the end surfaces 19 and 20 when the lid 11 is closed, that is, with a horizontal joining surface as a symmetry plane. Is done.

  Of the pair of springs 15, 16, both springs have a lower end connected to the bottom surface of the main body-side front concave portion 30 facing when the lid 11 is closed, and an upper end is connected to the top surface of the lid-side front concave portion 32. It is formed in the shape of a flat leaf spring and is formed across the upper end outer surface of the left side wall 5 on the front side of the hinge 12 and the lower end outer surface of the left end wall 9 and faces when the other spring 16 closes the lid 11. The upper end of the left side wall 5 on the rear side of the hinge 12 is formed in a two-sided leaf spring shape in which the lower end is connected to the bottom surface of the main body side rear recess 31 and the upper end is connected to the top surface of the lid side rear recess 33. It is formed across the outer surface and the outer surface of the lower end portion of the left end wall 9. The pair of springs 15 and 16 are formed symmetrically with respect to the center line of the hinge 12 as a symmetric line, and are provided at symmetrical positions with the hinge 12 interposed therebetween.

  As shown in FIG. 6, the springs 15 and 16 are respectively fixed to the side wall side fixed ends 36 and 36 (the bottom surfaces of the main body side front and rear recesses 30 and 31) and the end wall side fixed ends 37 and 37 when the lid 11 is closed. When the lid 11 is in the closed position, the lid 11 is in the closed position (the opening angle of the lid 11 is 0 degree). ) Between the side wall side fixed ends 36 and 36 and the end wall side fixed ends 37 and 37 under a compressive load along the length direction, bulging portions 38 and 38 that bulge outwardly in the middle portion When the lid 11 is opened at a predetermined opening angle from the closed position, the end wall side fixed ends 37, 37 are displaced obliquely upward to the left side with respect to the side wall side fixed ends 36, 36. The distance Y between the fixed ends 36 and 36 and the end wall side fixed ends 37 and 37 is extended. Thus, until the predetermined opening angle is exceeded, the bulging portions 38, 38 that have bulged outwardly are reversed, and the main body side front concave portion 30 and the lid side front concave portion 32 and the main body side rear concave portion 31 and the lid side are reversed. The rear concave portion 33 swells in a mountain shape toward the inside and exceeds the fulcrum, and the predetermined opening angle over the fulcrum is 10 degrees to 90 degrees, more preferably 10 degrees to 45 degrees. It is set within the range. In this embodiment, when the lid 11 is opened at an opening angle of about 30 degrees, the fulcrum is exceeded.

By such an action of the springs 15 and 16 exceeding the fulcrum, the lid 11 is biased to the closed position until the predetermined opening angle is exceeded, and when the predetermined opening angle is exceeded, the lid 11 is biased to the open position. It is configured. As a result, the lid 11 is opened by the urging force of the springs 15 and 16 after exceeding a predetermined opening angle, and is opened to the open position shown in FIGS. 8 to 10 reversed from the closed position. When the lid 11 is in the open position, as shown in FIGS. 8 to 10, the springs 15 and 16 are bent along the length direction and are arranged side by side with the upward side wall side fixed ends 36 and 36. Between the end wall side fixed ends 37 and 37, it is constructed in an inverted U shape, and the lid 11 is held in the open position.

  If the predetermined opening angle at which the springs 15 and 16 exceed the fulcrum is less than 10 degrees, it is difficult to obtain a stable biasing of the lid 11 to the open position, and the engagement holes 13 and the engagement claws 14 The engaging / disengaging operation, that is, the operation of locking and unlocking the lid 11 becomes difficult. If the angle exceeds 90 degrees, the unlocking of the lid 11 and the opening of the lid 11 to a predetermined opening angle cannot be performed with one hand, and the opening of the lid 11 from the closed position to the open position cannot be performed with a one-touch operation.

  The unit tube 2 configured as described above is molded by injection-filling a thermoplastic synthetic resin into a mold cavity and solidified, and has a one-piece structure. Moreover, in this injection molding, the unit tube 2 is shape | molded by the initial shape shown in FIGS. 8-10 which has the lid | cover 11 located in the open position. In this injection molding, the unit tubes 2 are arranged in the directions of arrows a and b at a predetermined pitch interval P shown in FIG. Then, after injection molding of such a unit tube 2, a thermoplastic synthetic resin is injected and filled in the same mold cavity to be solidified, whereby a flexible strip-shaped connecting member 3 is fitted to each unit tube 2. It shape | molds in the state penetrated by the ditch | groove 18. FIG. By such continuous molding of the plurality of unit tubes 2 and one connecting member 3, the bottom plate 4 of the plurality of unit tubes 2 is inserted and fitted into the fitting groove 18 at the center of the inner surface. A wire harness protection tube 1 that is integrally attached to the lower surface and in which a plurality of unit tubes 2 are connected in the directions of arrows a and b at a predetermined pitch interval P shown in FIG. 1 is formed.

  In the wire harness protection tube 1 of the present embodiment, the bottom plate 4 of the plurality of unit tubes 2 is integrally attached to the lower surface of the connecting member 3, but the fitting groove 18 is formed on the outer surface of the bottom plate 4 of the unit tube 2. Provided in the center from the front end surface to the rear end surface, the bottom plates 4 of the plurality of unit tubes 2 are integrally attached to the upper surface of the connecting member 3, and the plurality of unit tubes 2 are indicated by arrows a at a predetermined pitch interval P shown in FIG. , B may be connected in the direction b. Further, polyethylene, nylon, fluorine resin, or the like is used for the material resin of the unit tube 2 and the material resin of the connecting member 3.

Wiring-harness protective tube 1 of this embodiment is formed as described above, to open the open position to unlock the lid 11 by detaching the engaging hole 13 and the engagement pawls 14 of each unit tube 2 By this, it is possible to perform the wiring from the side of the wire harnesses. This is a case where the lid 11 of each unit tube 2 is provided in a closed state, and it is also possible to provide the lid 11 in an opened state. Work can be done. By After passing line which by engaging the engaging hole 13 and the engagement pawls 14 close the lid 11 of the unit tube 2 to lock in the closed position, interconnect the insertion retained wire harnesses inside the predetermined position In addition to protecting against impacts and wear, the wire harnesses are prevented from being broken. In addition, the replacement when the wire harnesses are mistakenly routed and the removal of the wire harnesses during the recycling are also performed by opening and closing the lid 11 of each unit tube 2 in the same manner as described above.

  Moreover, the wire harness protection tube 1 of this Embodiment can be bent along the thickness direction of the connection member 3 entirely, and as shown in FIG. 1, the joint surface with respect to each unit tube 2 of the connection member 3 In the bending direction, the minimum bending radius r required for wire harnesses, optical fibers, hydraulic pressure for power transmission, and pneumatic piping is secured by interference between the top plates 8 of adjacent unit tubes 2 in the bending direction. ing. Compared to the bending direction in which the connecting surface of the connecting member 3 with respect to each unit tube 2 is on the inside, compared to the bending direction on the outside, the bending of the connecting member 3 is restricted by the integration with respect to each unit tube 2. It becomes larger than the bending radius r shown in FIG. Further, since the connecting member 3 can be somewhat twisted between the bottom plates 4 of the adjacent unit tubes 2, it can be twisted somewhat as a whole.

  And the wire harness protection tube 1 of this Embodiment is a wire harness protection tube formed by connecting a plurality of hollow unit tubes 2 having both ends opened along the insertion direction of the wire harnesses in order to insert the wire harnesses. The unit tube 2 includes a base plate 7 and a main body 7 having a pair of side walls 5 and 6 which are raised from both ends of the base plate 4 and face each other, and a lid 11 which closes an open upper portion of the main body 7. A hinge 12 that is provided between an end of the one side wall 5 and one end of the lid 11 and continuously connects the lid 11 to the body 7 so as to be openable and closable, and the other side wall 6 and the lid 11. A pair of main body side engaging portions 13 and a lid side engaging portion 14 (a lock mechanism for fixing the lid in a closed position), and one end connected to the one side wall 5 in a separable manner. The other end of the lid 11 It is configured to be a thermoplastic synthetic resin molded article integrally provided with springs 15 and 16 that are continuously provided on the end side and hold the lid 11 in the open position. It has a lid open holding function. As described above, the unit tube 2 having the two-piece structure of the main body and the lid is made into one piece and the lid opening holding function is added to solve the problems of the conventional wire harness protection tube. The wire harness protection tube 1 can be manufactured easily and inexpensively so that the wire can be easily, quickly and properly performed with good workability, and the protection function of the wire harnesses can be prevented from being damaged in the state of use.

  The unit tube 2 is formed into an initial shape with the lid 11 positioned at the open position. With the lid 11 closed, a compression force is applied to the inner surfaces of the springs 15 and 16 and a tensile force is applied to the outer surface. At the same time, since the compression force is applied to the inner surface of the hinge 12 and the tensile force is applied to the outer surface, the springs 15 and 16 can be given more elasticity to hold the lid 11 in the open position, and Moreover, the elasticity for hold | maintaining the lid | cover 11 in an open position can be provided, and it can be set as the wire harness protection tube 1 which has a higher lid | cover open holding function.

  Each of the bottom plates 4 of the plurality of unit tubes 2 has a flexible strip-like connection formed by injection-filling and solidifying a thermoplastic synthetic resin in the same mold cavity as the plurality of unit tubes 2. The unit 3 is integrally attached to the lower surface or upper surface of the member 3, and the plurality of unit tubes 2 are connected at a predetermined pitch interval P. The product of the wire harness protection tube 1 is obtained only by molding. In addition, since no assembly is required, the wire harness protection tube 1 can be manufactured more easily and inexpensively.

  The lid 11 has a top plate 8 and a pair of end walls 9 and 10 which are suspended from and opposed to both ends of the top plate 8, and the end walls 9 and 10 are formed from side walls 5 and 6 of the main body 7. The height is low, and the side walls 5 and 6 of the main body 7 and the end walls 9 and 10 of the lid 11 are butted in the vertical direction so that the main body 7 and the lid 11 are joined to the side surface of the unit tube 2. Since the integrity with the main body 7 when the lid 11 is closed can be improved and the reliability of the lid closing function by the pair of main body side engaging portions 13 and the lid side engaging portion 14 can be improved. It can be set as the wire harness protection tube 1 which has a high protection function. Further, since the outer shape of the lid 11 is not so large, the lid 11 can be held in the open position even in a narrow space, and the wiring of the wire harness can be performed easily, quickly and appropriately with good workability. .

  The other side wall 6 includes a bent portion 23 having a crank-like cross-sectional shape, and a stepped surface 25 that overlaps the end surface of the other end wall 10 and an extended side wall that overlaps the inner surface of the other end wall 10. 26, the extension side wall 26 includes the main body side engaging portion 13, the other end wall 10 includes the lid side engaging portion 14, and the other side wall 6 and the other end wall 10 By pressing either one of them inward, the main body side engaging portion 13 and the lid side engaging portion 14 that are engaged with each other are disengaged. The engagement area of the side engagement portion 14 can be increased, and the open end side of the lid 11 can be joined to the main body 7 on two surfaces, and the lid 11 is securely fixed (locked) in the closed position. Of the lid closing function by the body side engaging portion 13 and the lid side engaging portion 14. It is possible to increase the dependability may be a wire harness protecting tube 1 having a higher protection. Since the main body side engaging portion 13 and the lid side engaging portion 14 that are engaged with each other can be easily detached (unlocked) and the lid 11 can be slightly opened with one touch. It is excellent in the operativity of the lid | cover 11, and it can be set as the wire harness protection tube 1 which has the better wiring workability | operativity.

  The inner surface of the bottom plate 4 or the top plate 8 that is continuously provided with the wall 6 or 10 that is pressed when the body side engaging portion 13 and the lid side engaging portion 14 that are engaged with each other are separated is recessed. The wall 6 or 8 is bent in the engagement / disengagement direction of the pair of main body side engaging portions 13 and lid side engaging portions 14 by bending deformation of the bottom plate 4 or the top plate 8. Concentrated stress is generated at the base of the wall 6 or 10 that is pressed when the main body side engaging portion 13 and the lid side engaging portion 14 are separated from each other. The wire harness protection tube that can suppress the breakage of the wall 6 or 10 and can prevent the lid holding function from being lowered or lost due to bending, and is durable even in rough handling. 1 can be used.

  The main body side engaging portion is an engaging hole 13 reaching an inner surface provided on the outer surface of the extended side wall 26 or an engaging recess not reaching the inner surface, and the lid side engaging portion is an inner surface of the other end wall 10. The engaging claw 14 bulges partially inwardly, and the engaging claw 14 is formed by an inclined surface 27 on the inner surface of the engaging claw 14 as the lid 11 is closed. After sliding the outer surface of the second end wall 10 inward, when the end surface of the other end wall 10 overlaps the stepped surface 25, it is opposed to the engagement hole 13 or the engagement recess, thereby returning the extended side wall 26. Accordingly, it automatically fits into the engagement hole 13 or the engagement recess and engages with the extended side wall 26 in the direction in which the lid 11 opens. The lid 1 can be automatically and reliably fixed (locked) in the closed position. Excellent operability can be a wire harness protecting tube 1 having a better wire-passing workability.

The bottom plate 4 is curved so that the inner surface is concave and the outer surface is convex, and the other side wall 6 and the extended side wall 26 are integrated with the pair of engagement holes 13 or the engagement by the deformation of the bottom plate 4. which was a configuration for oscillating the disengagement direction of the recess and the engaging pawl 14, when disengaging the engaging claw 14 of the engaging hole or the engagement concave portion and the cover side of the main body engaged with each other Concentrated stress can be prevented from occurring at the base of the other side wall 6 on the main body side to be pressed, and the breakage of the other side wall 6 on the main body side can be prevented, and the lid closing function is lowered due to bending. -Disappearance can be prevented and a wire harness protection tube that is durable even in rough handling can be obtained.

  The springs 15 and 16 urge the lid 11 to the closed position until the predetermined opening angle is exceeded by the action of exceeding the fulcrum, and when the predetermined opening angle is exceeded, the spring 11 is urged to the open position. The opening angle is set in the range of 10 degrees to 90 degrees, following the operation of disengaging the main body side engaging portion 13 and the lid side engaging portion 14 that are engaged with each other. By opening the lid 11 a little, the lid 11 can be moved to the open position by the urging force of the springs 15 and 16 to be held thereafter, so that the operability of the lid 11 is excellent, and better wiring workability is achieved. It can be set as the wire harness protection tube 1 which has.

The springs 15 and 16 are formed in a plate shape having a length longer than the distance Y between the side wall-side fixed end 36 and the lid side fixed end 37 facing each other when the lid 11 is in the closed position, When the lid 11 is in the closed position, it receives a compressive load along the length direction and bulges an intermediate portion outwardly between the side wall-side fixed end 36 and the lid-side fixed end 37. When the lid 11 is in the open position inverted from the closed position, the side wall-side fixed end 36 and the lid-side fixed end 37 are bent along the length direction and lined sideways. The springs 15 and 16 are swollen on the outer surface of the one side wall 5 facing the springs 15 and 16 and the outer surface on one end side of the lid 11 when the lid 11 is in the closed position. Concave portions 30 and 3 for inverting the portion 38 inward When obtained by the configuration including the 32 and 33 can be performed one-piece of a unit tube 2 while applying a cover opened holding function. In addition, since the lid opening holding function can be reliably obtained with a simple spring shape, the reliability of the lid opening holding function can be improved without impairing the ease of manufacture of the wire harness protection tube 1, and a higher lid can be obtained. It can be set as the wire harness protection tube 1 which has an open holding | maintenance function.

  The springs 15 and 16 are provided at symmetrical positions with the hinge 12 interposed therebetween, and the lid 11 is urged in a balanced manner by the symmetrical double springs 15 and 16 with the hinge 12 interposed therebetween so that the lid 11 is stably opened. Therefore, the wire harness protection tube 1 having a higher lid opening holding function can be obtained.

  Therefore, the wire harness protection tube 1 of the present embodiment can be easily and inexpensively manufactured by making the unit tube 2 having a two-piece structure of the main body and the lid into one piece and adding the lid opening holding function. In addition, the wire harnesses can be routed easily, quickly and appropriately with good workability, and the protection function of the wire harnesses can be prevented from being impaired in the state of use.

  As mentioned above, although this Embodiment showed suitable one Embodiment of the wire harness protection tube of this invention, this invention is not limited to it, It can implement various deformation | transformation within the range which does not deviate from the summary. it can.

It is a side view which shows the wire harness protection tube which concerns on one embodiment of this invention. It is a side view which shows the state which bent the wire harness protection tube with the minimum bending radius. It is the (A) front view, (B) side view, and (C) sectional view which show the unit tube of the wire harness protection tube. It is a partial expanded sectional view which shows the connection part (hinge part) of the main body and cover of the same unit tube. It is a partial expanded sectional view which shows the cover closed holding | maintenance part (locking mechanism part) of the same unit tube. It is a partial expanded sectional view which shows the cover open holding | maintenance part (spring part) of the same unit tube. It is sectional drawing which shows lid | cover unlocking operation of the same unit tube. It is sectional drawing which shows the state which opened the cover of the same unit tube to the open position. It is the perspective view which looked at the state which opened the cover of the unit tube to the open position from diagonally upward. It is the perspective view which looked at the state which opened the cover of the unit tube to the open position from diagonally downward.

1 Wire harness protection tube 2 Unit tube 3 Connecting member 4 Bottom plate 5 Left side wall (one side wall)
6 Right side wall (the other side wall)
7 Body 8 Top plate 9 Left end wall (one end of the lid)
10 Right end wall (the other end of the lid)
11 Lid 12 Hinge 13 Locking hole (Main body side engaging part)
14 Locking claw (lid side engaging part)
DESCRIPTION OF SYMBOLS 15, 16 Spring 23 Bending part 24 End surface of right end wall 25 Step surface 26 Extended side wall 27 Inclined surface 30-33 Recessed part 36 Side wall side fixed end 37 End wall side fixed end 38 Swelling part

Claims (9)

A wire harness protection tube formed by connecting a plurality of hollow unit tubes having both ends opened in order to insert the wire harnesses along the insertion direction of the wire harnesses, wherein the unit tube includes both a bottom plate and both ends of the bottom plate. A main body having a pair of side walls that are raised from the opposite sides, a lid that closes an open upper portion of the main body, and an end portion of the one side wall and one end portion of the lid, A hinge that continuously and integrally connects the lid so as to be openable and closable; a pair of body-side engagement portions and a lid-side engagement portion that detachably couple the other side wall and the other end side of the lid; a spring for holding the lid by contiguously other end provided continuously to the side wall at one end of the lid in the open position, the Ri thermoplastic synthetic resin molded article der provided integrally, the lid, the top plate and It is suspended from both ends of the top plate A pair of end walls, the end walls being lower in height than the side wall of the main body, and the other side wall having a bent portion having a crank-like cross-sectional shape and overlapping the end surface of the other end wall A step surface and an extended side wall that overlaps an outer surface with the inner surface of the other end wall, the extended side wall includes the main body side engaging portion, and the other end wall includes the lid side engaging portion, By pressing one of the other side wall and the other end wall inward, the main body side engaging portion and the lid side engaging portion engaged with each other are disengaged. Wire harness protection tube. The bottom plate or the top plate in which a wall to be pressed when the main body side engaging portion and the lid side engaging portion that are engaged with each other are disengaged are connected so that the inner surface is concave and the outer surface is convex. The wire harness protection tube according to claim 1, wherein the wall is swung in a disengagement direction of the pair of main body side engaging portions and lid side engaging portions by bending deformation of the bottom plate or the top plate . The main body side engaging portion is an engaging hole reaching the inner surface provided on the outer surface of the extended side wall or an engaging recess not reaching the inner surface, and the lid side engaging portion partially covers the inner surface of the other end wall. The engaging claw bulges inwardly, and the engaging claw slides while pressing the outer surface of the extended side wall inward with an inclined surface on the inner surface of the engaging claw as the lid is closed. After the movement, when the end surface of the other end wall overlaps with the stepped surface, the engagement hole or the engagement recess is automatically moved along with the return of the extended side wall by facing the engagement hole or the engagement recess. The wire harness protection tube according to claim 1 or 2, wherein the wire harness protection tube is fitted and engaged with the extension side wall in a direction in which the lid opens . The bottom plate is curved so that the inner surface is concave and the outer surface is convex, and the other side wall and the extended side wall are integrally formed with the pair of engagement holes or engagement recesses and engagement claws by the deformation of the bottom plate. The wire harness protection tube according to claim 3 , wherein the wire harness protection tube is swung in the engagement / disengagement direction . The spring urges the lid to the closed position until the predetermined opening angle exceeds the fulcrum action, and the spring urges the lid to the open position when the predetermined opening angle is exceeded. The wire harness protection tube according to any one of claims 1 to 4, which is set within a range of degrees to 90 degrees . The spring is formed in a plate shape having a length longer than the distance between the side wall-side fixed end and the lid side fixed end facing each other when the lid is in the closed position, and the lid is in the closed position. When receiving a compressive load along the length direction, the intermediate portion is erected in a mountain shape toward the outside between the side wall side fixed end and the lid side fixed end, and the lid is closed When it is in the open position reversed from above, it is installed in an inverted U shape between the side wall side fixed end and the lid side fixed end that are bent along the length direction and lined sideways, and the lid is closed. The concave portion for reversing the bulging part of the spring inwardly is provided on the outer surface of the one side wall facing the spring when in position and the outer surface on one end side of the lid. The wire harness protection tube as described in the item . The wire harness protection tube according to any one of claims 1 to 6, wherein the spring is provided at a symmetrical position across the hinge . The wire harness protection tube according to any one of claims 1 to 7, wherein the unit tube is formed into an initial shape in which the lid is located at an open position . The bottom plate of each of the plurality of unit tubes is below a flexible band-shaped connecting member formed by injection-filling and solidifying a thermoplastic synthetic resin in the same mold cavity as the plurality of unit tubes. The wire harness protection tube according to any one of claims 1 to 8, wherein the wire harness protection tube is integrally attached to a surface or an upper surface, and the plurality of unit tubes are connected at a predetermined pitch interval .

Images