JP7423154B2 - Protective member for harness - Google Patents

Description

The present invention relates to the structure of a wire harness protection member that is used while being attached to a wire harness.

For example, wire harnesses (hereinafter referred to as "harnesses") used in vehicles, etc. are equipped with harness protection materials to protect the surrounding area when a single harness or multiple harnesses are bundled, or to secure them to equipment in a protected state. (hereinafter referred to as a protection member) is used. As such protection members, those made of resin materials are widely used, and they are easy to attach to the harness, have a simple structure, and are inexpensive.

In order to facilitate attachment to a harness with fixed ends, such protection members are made of a deformable resin material and are manufactured in an open state immediately after manufacture, and then By deforming it into a closed state that surrounds the harness, it is structured to take the desired shape.

Patent Document 1 describes such a protection member (cord protector). The cross-sectional shape of the protection member perpendicular to the harness is approximately rectangular so as to surround the harness. This protection member is manufactured with one vertex in this cross section open (separated). On the other hand, one other vertex has a structure that is particularly easy to deform. The apex portion, which is in the open state immediately after manufacture, has a structure that locks it in the closed state. This makes it possible to attach the protective member to the harness particularly easily.

Utility Model Application Publication No. 1987-195712

Although the above-mentioned protective member is easy to attach, it is necessary to deform it when attaching and detaching, so there is a problem in its durability, for example, when the attachment and detachment work is repeated.

Therefore, there has been a need for a wire harness protection member that is easy to attach and detach, has high durability, and is inexpensive.

The present invention was made in view of the above situation, and an object of the present invention is to solve the above problems.

The present invention is a harness protection member made of a resin material, which is attached to a wire harness so as to surround the periphery thereof in the stretching direction, the first side surface being substantially parallel to the stretching direction; a second side surface that is substantially parallel to the stretching direction and adjacent to the first side surface; and a deformable hinge section that connects the first side surface and the second side surface; By changing the shape of the hinge portion between the first state before being attached to the wire harness and the second state being attached to the wire harness, the first side surface and the second The angle formed by the side surface of the hinge section is configured such that the angle formed by the side surface of the hinge section changes in the first state. The minimum point of the thickness of the hinge portion is located between the center of the first side surface and the second side surface and the first side surface and is spaced apart from the center and the first side surface, and between the center and the first side surface. It is provided at a location spaced apart from the center and the second side surface between the second side surface and is shaped so that it is not provided at the center .

Since the present invention is configured as described above, it is possible to obtain a wire harness protection member that is easy to attach and detach, has high durability, and is inexpensive.

FIG. 2 is a perspective view of the appearance of a general harness protection member. It is sectional drawing which shows the structure of two types of states of a general protection member for harnesses. It is sectional drawing which shows the shape of the hinge part in two types of states in the conventional protection member for harnesses. It is sectional drawing which shows the shape in two types of states of the hinge part in the protection member for harnesses based on embodiment. It is sectional drawing which sequentially shows the situation when the hinge part in the protection member for harnesses which concerns on embodiment deform|transforms. It is sectional drawing which shows the shape in two types of states of the hinge part in the protection member for harnesses which becomes a 1st modification. It is sectional drawing which shows the shape in two types of states of the hinge part in the protection member for harnesses which becomes a 2nd modification. It is sectional drawing which shows the shape in two types of states of the hinge part in the protection member for harnesses which is a 3rd modification. It is sectional drawing which shows the shape in two types of states of the hinge part in the protection member for harnesses which is a 4th modification.

Next, embodiments for carrying out the present invention will be specifically described with reference to the drawings. FIG. 1 is a perspective view showing the appearance of a general harness protection member (protection member) 1. As shown in FIG. Here, the protective member 1 is attached so as to surround a wire harness (harness) H indicated by a broken line, and is schematically shown in FIG. 1 in the attached state. Similar to the protection member described in Patent Document 1, this protection member 1 also has a substantially rectangular cross-sectional shape perpendicular to the stretching direction of the harness H, and is configured such that the harness H passes through the center of this rectangular shape. Attached to harness H. By fixing the protection member 1 to another member in this state, the harness H can be fixed.

In FIG. 1, the overall shape of the protection member 1 is approximately rectangular, and a rectangular side surface (first side surface) 1A that is approximately parallel to the harness H is provided on the upper side, and the end of the side surface 1A is There are two sides (sides A and B) parallel to the harness H. A side portion B is the intersection of the right side surface (second side surface) 1B and the upper side surface 1A of the protection member 1.

FIG. 2(a) shows the cross-sectional structure of the protective member 1 in the state before it is installed (first state), and FIG. 2(b) shows the cross-sectional structure perpendicular to the harness H in the state after it is installed (second state). FIG. In the state before mounting (FIG. 2(a)) and after mounting (FIG. 2(b)), the side surfaces 1A and 1B are parallel, and in the state after mounting (FIG. 2(b)), the side surfaces 1A and 1B are parallel. 1B has been rotated 180° counterclockwise in the figure from the state before attachment (FIG. 2(a)). In FIG. 2(b), the sides A and B each extend in the direction perpendicular to the paper surface, and the area XB where the right side surface (second side surface) 1B and the upper side surface 1A of the protective member 1 intersect is the side portion. Corresponding to B, a region XA where the left side surface 1C and the upper side surface 1A intersect corresponds to the side portion A.

Here, as shown in FIG. 2(a), in the state before installation, the side A is in an open state, so the area XA1 at the end on the side 1C side and the end on the side 1A side It is divided into area XA2. In addition, in FIG. 2(b), the side surface 1A is rotated by 180 degrees from the state of FIG. Part B (within area XB) can be deformed. Further, in order to lock and fix the side surface 1A to the left side surface 1C in a state where the region XA1 and the region XA2 are combined to form the region XA in the state shown in FIG. 1C1 is provided on the upper end side of the side surface 1C. Therefore, the configuration shown in FIG. 1 can be realized by changing the state shown in FIG. 2(a) to the state shown in FIG. 2(b). Such a configuration can be easily realized by constructing the entire protective member 1 from a soft resin material or the like. Here, in order to enable the above-described deformation within the region XB, a bendable hinge portion 1D is provided.

The above points are common to the protection member according to the embodiment of the present invention and the conventional protection member. Moreover, FIGS. 3(a) and 3(b) are diagrams showing an enlarged cross-sectional structure of the area XB in the conventional protection member 1, corresponding to FIGS. 2(a) and (b). Here, the side surface 1A and the side surface 1B, which are formed thicker and therefore cannot be easily deformed, are connected by a hinge portion 1D, which is formed thinner than these and thus easily deformed. In FIG. 3, the side surface 1A, the side surface 1B, and the hinge portion 1D are shown as independent components, but in reality, they are integrally molded from the same resin material.

In order to change the state from the state shown in FIG. 3(a) to the state shown in FIG. 3(b), the hinge portion 1D is deformed in-plane from the state shown in FIG. 3(a) before deformation to the state shown in FIG. 3(b). do. Therefore, the state shown in FIG. 3(b) can be easily achieved, and the state shown in FIG. 1 can be easily achieved.

In the conventional protection member 1, while the state shown in FIG. 3(b) can be easily realized, the area where the deformation is the largest (the area where the load during deformation is the largest) in the hinge part 1D is the central area X1. It became. Therefore, when the protective member 1 is repeatedly attached and detached, the hinge portion 1D is easily damaged in this region X1. That is, the durability of the protection member 1 was limited by the hinge portion 1D.

In the protection member according to the embodiment of the present invention, the shape of the hinge portion is different from the hinge portion 1D described above. This point will be explained below.

In the protection member according to the embodiment, the structure other than the hinge portion is the same as that of the protection member 1 described above. The cross-sectional structures of the hinge portion 11D, side surface 1A, and side surface 1B used in the protection member according to the embodiment are shown in FIG. 4 in a state before mounting (a) and after mounting (b), corresponding to FIG. 3.

As shown in FIG. 4(a), in this hinge portion 11D, the minimum point of the thickness along the moving direction (vertical direction in the figure) when deforming is in the area indicated by P2 and P3 in the horizontal direction. are formed on both sides of the central part, as shown by the arrows. In the hinge portion 11D, such locally thinned portions become easily deformed.

5(a) to 5(c) sequentially show how the hinge portion 11D changes from the state shown in FIG. 4(a) to the state shown in FIG. 4(b). First, in the state of FIG. 5(a) where bending is small, the largest deformation occurs in the region X2 corresponding to P2 on the left side in FIG. 4(a), which is close to the side surface 1B. After that, in the state shown in FIG. 5(b) where the bending is further increased, the amount of deformation in the region X2 becomes large, and deformation in the region X2 becomes difficult to occur, so that the deformation in the central region X1 of the hinge portion 11D becomes large. Become. In the state shown in Fig. 5(c) where the bending has further increased, the amount of deformation in regions X2 and X1 has already increased, making deformation in these regions less likely to occur. The deformation in region X3 becomes large.

Therefore, even in this case, when the hinge portion 11D is deformed as shown in FIG. 4(b), a load is applied to the central region X1, as in the case of the hinge portion 1D in FIG. 3. However, in this case, regions X2 corresponding to P2 and X3 corresponding to P3 are also easily deformed, so that the regions X2 and X3 are subjected to a load during deformation in addition to region X1. Therefore, the load is distributed over the regions X1, X2, and X3, and the load in each region is smaller than in the region X1 in FIG. 3(b). Thereby, the durability of the hinge portion 11D can be increased, and the durability of the protection member using this can be increased.

Such a hinge portion 11D or a protective member having the hinge portion 11D is manufactured by molding a soft resin material. At this time, the shape to be molded can be the shape shown in FIG. 4(a). In this case, the shape when no load is applied is the shape shown in FIG. 4(a), so when the hinge portion 11D is deformed as shown in FIG. 4(b), the substantially The deformation is very small. Therefore, the load in the region X1 can be particularly reduced. On the other hand, since the remaining load is distributed to regions X2 and X3, the maximum value of the load in each region is lower than in the case of FIG. 3. In this way, by bringing the shape immediately after molding of a specific region among the three regions X1, X2, and X3 closer to the shape after installation (FIG. 4(b)), the load in this region is particularly reduced. be able to.

Further, in addition to the two locations P2 and P3 described above, the minimum thickness point may also be provided at the central portion corresponding to the region X1. FIG. 6 shows the structure of a hinge portion 21D as such a first modified example, similar to FIG. 4. In this case, the region X1 corresponding to P1, the region X2 corresponding to P2, and the region X3 corresponding to P3 are particularly easy to deform, so that the load can be distributed more reliably.

The part corresponding to such a minimum point of thickness is, for example, the upper surface (one side surface) of the hinge part perpendicular to the moving direction (vertical direction) during the above deformation in FIGS. 3 to 6. ), it can be easily formed by making the lower surface (the surface on the other side) into a recessed shape. At this time, during the above deformation, the upper surface becomes the side that is compressed and the lower surface becomes the side that expands, so it is preferable to form the dug structure in this way on the upper surface side. FIG. 7 shows the structure of a hinge portion 31D that is a second modified example, similar to FIG. 4.

Further, the surface on the digging side can be made different between the locations corresponding to the minimum points on both sides and the location corresponding to the central minimum point. FIG. 8 shows the structure of a hinge portion 41D that is a third modification example, similar to FIG. 4. In this hinge portion 41D, the locations (P2, P3) corresponding to the minimum points on both sides are formed by digging down the top surface, and the location (P1) corresponding to the minimum point in the center is formed by digging down the bottom surface. Ru.

FIG. 9 shows the structure of a hinge portion 51D as a fourth modified example, similar to FIG. 4. In this hinge portion 51D, contrary to the case of FIG. 8, the locations (P2, P3) corresponding to the minimum points on both sides are formed by digging into the bottom surface, and the locations corresponding to the minimum point in the center (P1) are formed by digging down the bottom surface. is formed with a hollowed-out top surface.

In this way, it is preferable that at least one minimum point be formed by having the upper surface side dug out. Which local minimum point should be provided as a shape dug into the surface on which side depends on which part should be especially strengthened before installation (first state), after installation (second state), or immediately after molding (installation). The settings are made depending on which local minimum point should be provided to provide a region where the load is particularly small by reducing the amount of substantial deformation when changing from the state (before) to the post-installation state. In either case, it is preferable to provide minimum points at least on both sides of the hinge portion across the center.

The present invention has been described above based on the embodiments. It will be understood by those skilled in the art that this embodiment is merely an example, and that various modifications can be made to the combinations of these components, and that such modifications are also within the scope of the present invention.

1 Protective member for harness (protective member)
1A Side (first side)
1B Side (second side)
1C Side 1C1 Locking parts 1D, 11D, 21D, 31D, 41D, 51D Hinge parts A, B Side part H Wire harness (harness)

Claims (1)

A harness protection member made of a resin material and attached to a wire harness so as to surround the periphery in a stretching direction thereof,
a first side surface substantially parallel to the stretching direction;
a second side surface that is substantially parallel to the stretching direction and adjacent to the first side surface;
a hinge portion that connects the first side surface and the second side surface and is deformable;
Equipped with
By changing the shape of the hinge portion between the first state before being attached to the wire harness and the second state being attached to the wire harness, the first side surface and the first side surface are It is configured so that the angle formed by the two sides changes,
The hinge portion is
In the first state, the minimum point of the thickness of the hinge portion perpendicular to the direction connecting the first side surface side and the second side surface side of the hinge portion is between the first side surface and the second side surface side. between the center of the side surface of No. 2 and the first side surface, the area is spaced apart from the center and the first side surface; and between the center and the second side surface, the area is away from the center and the second side surface. A protection member for a harness, characterized in that the protection member is provided at separate locations and is not provided at the center .

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