JP2019149920A - Protector and manufacturing method of protector - Google Patents

Abstract

To provide a protector capable of establishing compatibility between ease of deformation of the protector and an improvement of protecting performance to a target object which inserts into the protector, and a manufacturing method of the protector.SOLUTION: A protector 1 has a multilayer structure in which a second cylindrical body 20 is arranged so as to cover a first cylindrical body 10 defining a centrum into which a target object 2 is inserted. The first cylindrical body 10 has a plurality of first slits 11 which are apart from each other in an axial direction of the protector 1 and which are capable of opening/closing in conformity of a deformation of the protector 1, and the second cylindrical body 20 has a plurality of second slits 21 which are apart from each other in the axial direction of the protector 1 and which are capable of opening/closing in conformity of the deformation of the protector 1. In a state where the first slits 11 and the second slits 21 are arranged at positions shifted from each other in the axial direction, the first cylindrical body 10 and the second cylindrical body 20 are inseparably connected.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a cylindrical protective device through which an object can be inserted, and a method for manufacturing such a protective device.

  Conventionally, a protector (protector) that defines a path (cavity / space) that can accommodate an electric wire constituting a wire harness is proposed (for example, see Patent Documents 1 to 4). This type of protector is typically used for the purpose of isolating an electric wire housed in the inside from the outside and protecting the electric wire from surrounding members, dust, water, and the like.

  For example, one of the conventional protectors has a cylindrical shape in which both side edges of the belt-like member are closed, and an electric wire can be accommodated therein. This conventional protector has a slit-like cut in a part of a cylinder wall, and the cut of the protector is facilitated by opening and closing the cut in accordance with the curve of the protector (for example, Patent Document 1). See).

JP 2016-144302 A Japanese Patent Laid-Open No. 2016-135019 JP2013-135504A JP 2008-149871 A

  However, in the above-described conventional protector, when the cut is opened in accordance with the curve of the protector, the electric wire accommodated in the protector is exposed to the outside, and the electric wire is not sufficiently isolated from the outside. From the viewpoint of reliably protecting the electric wire, it is desirable to prevent the electric wire from being exposed from the protector as much as possible.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a protector capable of achieving both ease of deformation of the protector and improvement of protection performance of an object inserted into the protector. And it is providing the manufacturing method of such a protector.

In order to achieve the above-described object, the protective equipment according to the present invention is characterized by the following (1) to (3).
(1)
A cylindrical protective device through which an object can be inserted,
A first tubular body that defines a hollow portion through which the object is inserted; and a second tubular body that defines a hollow portion in which the first tubular body is housed. Having a multilayer structure in which the second cylindrical body is disposed so as to cover the cylindrical body;
The first cylindrical body is
A plurality of first slits spaced apart from each other in the axial direction of the protector, and a plurality of first slits penetrating through the cylindrical wall of the first tubular body in the thickness direction so as to be opened and closed in accordance with deformation of the protector Having a first slit,
The second cylindrical body is
A plurality of second slits spaced apart from each other in the axial direction of the protector, and a plurality of second slits penetrating through the cylindrical wall of the second tubular body in the thickness direction so as to be opened and closed in accordance with deformation of the protector A second slit,
In a state where the first slit and the second slit are arranged at positions shifted from each other in the axial direction, the first cylindrical body and the second cylindrical body are connected so as not to be separated,
Be protective equipment.
(2)
In the protective equipment according to (1) above,
The first cylindrical body is
The part of the plate material in which the first opening corresponding to the first slit is provided in part and the second opening corresponding to the second slit is provided in the other part is wound around the axis. Having a round shape,
The second cylindrical body is
The other part of the plate member has a winding shape that is rounded so as to cover the first cylindrical body,
Be protective equipment.
(3)
In the protective equipment described in (2) above,
The first cylindrical body is
The first slit has a quadrangular cylindrical shape having four cylindrical walls, and extends to straddle the three cylindrical walls,
The second cylindrical body is
It has a quadrangular cylindrical shape having four cylindrical walls, has the second slits extending so as to straddle the three cylindrical walls, and opens and closes the second slits in one cylindrical wall Having a hinge part,
Be protective equipment.

  According to the protector having the configuration (1), since the slits are provided in both the first tubular body and the second tubular body, the protector can be easily deformed (for example, curved). Furthermore, in the multilayer structure in which the second cylindrical body is disposed so as to cover the first cylindrical body, the slits of the first cylindrical body and the slits of the second cylindrical body are displaced from each other in the axial direction. Is arranged. Therefore, even if both slits (the first slit and the second slit) are opened with the deformation of the protective equipment, the first slit is closed by the cylindrical wall of the second cylindrical body, and the second slit is the first cylinder. Since it is blocked by the cylindrical wall of the body, the object inserted into the protective device is not exposed to the outside. Therefore, the protector of this structure can achieve both the ease of deformation of the protector and the improvement of the protection performance of the object inserted into the protector.

  According to the protector having the configuration of (2) above, the first tube having a cylindrical winding shape is obtained by providing the first opening and the second opening on one plate and then rolling the plate. The cylindrical body and the second cylindrical body can be easily formed. In addition, resin and paper etc. are mentioned as a material of the board | plate material suitable for the 1st cylindrical body and 2nd cylindrical body which have such a winding shape, for example.

  According to the protector having the configuration of (3) above, the second cylindrical body (a cylindrical body outside the multilayer structure) having a slit has a slit extending so as to straddle three cylindrical walls. The cylinder wall has a hinge portion for opening and closing the slit. Therefore, since the slit of the second cylindrical body can be easily opened and closed around the hinge portion, the flexibility of the protective equipment can be improved as compared with the case where the hinge portion is not provided. In addition, as a hinge part, the fold etc. which were previously provided in the board | plate material are mentioned, for example.

  On the other hand, the first cylindrical body (a cylindrical body inside the multilayer structure) having a square cylindrical shape has a first slit extending over three cylindrical walls, and has a hinge portion on one cylindrical wall. You do not have to. For example, in the case where a single cylindrical wall has a hinge portion, the slit of the first cylindrical body can be easily opened and closed around this hinge portion, so that the flexibility of the protective equipment can be further improved. On the other hand, when it does not have a hinge part, since the slit of a 1st cylindrical body becomes comparatively difficult to open, it can suppress that the rigidity of a protector becomes small too much.

In order to achieve the above-described object, the manufacturing method of the protective equipment according to the present invention is characterized by the following (4).
(4)
A method of manufacturing a cylindrical protective device through which an object can be inserted,
The protective equipment is
A first cylindrical body that defines a hollow portion through which the object is inserted and has a plurality of first slits separated from each other in the axial direction of the protector on the cylindrical wall, and the first cylindrical body are accommodated. And a second cylindrical body having a plurality of second slits that are separated from each other in the axial direction on the cylindrical wall, and the second cylinder so as to cover the first cylindrical body Having a multi-layered structure in which
The manufacturing method is as follows:
Forming a plurality of first openings extending in a slit shape in the width direction in a part of a plate material having a width direction and a length direction so as to be separated from each other in the length direction;
In the other part of the plate material, a plurality of second openings extending in a slit shape in the width direction are separated from each other in the length direction, and the first opening and the second opening have the length. Forming so as to be arranged at positions shifted from each other in the direction;
Forming the first cylindrical body having the plurality of first slits formed by the plurality of first openings by rounding the part of the plate material along the width direction;
Forming the second cylindrical body having the plurality of second slits formed by the plurality of second openings by rolling the other portion of the plate material so as to cover the first cylindrical body. And with,
It is a manufacturing method of protective equipment.

  According to the method for manufacturing a protector having the configuration of (4) above, since the slit is provided in both the first tubular body and the second tubular body of the protector to be manufactured, the deformation of the protector (for example, Easy to bend). Furthermore, in the multilayer structure in which the second cylindrical body is disposed so as to cover the first cylindrical body, the slits of the first cylindrical body and the slits of the second cylindrical body are displaced from each other in the axial direction. Is arranged. Therefore, even if both slits (the first slit and the second slit) are opened with the deformation of the protective equipment, the first slit is closed by the cylindrical wall of the second cylindrical body, and the second slit is the first cylinder. Since it is blocked by the cylindrical wall of the body, the object inserted into the protective device is not exposed to the outside. Therefore, the manufacturing method of the protector of this structure can manufacture the protector which can achieve both the ease of deformation of the protector and the improvement of the protection performance of the object inserted into the protector.

  According to the present invention, it is possible to provide a protective device capable of achieving both the ease of deformation of the protective device and the improvement of the protection performance of an object inserted through the protective device, and a method for manufacturing such a protective device. .

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

Fig.1 (a) is a perspective view which shows the state which the protector in which the electric wire which concerns on embodiment of this invention was penetrated extended linearly, FIG.1 (b) is the state in which a part of the protector curved FIG. FIG. 2 is an enlarged view showing an enlarged curved portion of the protector shown in FIG. Fig.3 (a) is a top view of the protector shown in FIG.1 (b), FIG.3 (b) is the sectional view on the AA line of Fig.3 (a). 4 is a plan view of a flat plate material used for manufacturing the protector shown in FIG. 1, and is a development view of the protector shown in FIG. FIG. 5A is a side view of the flat plate material shown in FIG. 4, and FIG. 5B is a side view of the plate material using a plurality of folds extending in the length direction in order. FIG. 5C is a diagram showing an intermediate stage in the process of bending and winding at right angles in order, and FIG. 5C is a diagram showing a completion stage of the winding process.

<Embodiment>
Hereinafter, a protector 1 and a method of manufacturing the protector 1 according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 3, the resin protector 1 has a cylindrical shape extending in the axial direction through which an object can be inserted. In the example shown in FIGS. 1 to 3, an electric wire 2 constituting a wire harness routed in a car body or the like of an automobile is inserted into the protector 1. In this case, the protector 1 can be used as a protector for protecting the electric wire 2 inserted therein. In the example shown in FIGS. 1 to 3, as the electric wire 2, a single electric wire composed of a conductor 3 and a resin coating 4 covering the conductor 3 is employed (particularly, refer to FIG. 3B). As the electric wire 2, a stranded wire obtained by twisting a plurality of electric wires may be adopted.

  As shown in FIGS. 1 to 3, the protector 1 includes a first tubular body 10 having a square tubular shape, and a second tubular body 20 having a square tubular shape disposed so as to cover the first tubular body 10. , And has a multilayer structure. As shown in FIG. 3B, the first cylindrical body 10 has a winding shape in which a part of the plate material is bent (rounded) around the axis, and the second cylindrical body 20 The remaining part (other part) of the plate material has a wound shape that is bent (rounded) around the axis so as to cover the first tubular body 10. The 1st cylindrical body 10 and the 2nd cylindrical body 20 are comprised from the common board | plate material, and are mutually connected so that isolation | separation is impossible.

  Specifically, as shown in FIG. 3 (b), the first cylindrical body 10 extending in the axial direction of the square cylindrical shape is connected by being bent at a right angle from the flat side wall 10a and the lower edge of the side wall 10a. A flat bottom wall 10b, a flat side wall 10c that is bent and connected at right angles from the side edge of the bottom wall 10b, and a flat upper wall 10d that is bent and connected at right angles from the upper edge of the side wall 10c. Composed. A hollow portion through which the electric wire 2 is inserted is defined by the side wall 10a, the bottom wall 10b, the side wall 10c, and the upper wall 10d.

  The second cylindrical body 20 extending in the axial direction of the rectangular cylinder has a flat side wall 20e bent and connected at right angles from the side edge of the upper wall 10d, and a flat plate bent and connected at right angles from the lower edge of the side wall 20e. A flat bottom wall 20f, a flat side wall 20g that is bent at a right angle from a side edge of the bottom wall 20f, a flat top wall 20h that is bent at a right angle from an upper edge of the side wall 20g, and a top wall And a flat side wall 20i that is bent at a right angle from the side edge of 20h. The side wall 20e, the side wall 20i, the bottom wall 20f, the side wall 20g, and the upper wall 20h define a hollow portion in which the first tubular body 10 is accommodated (covers the first tubular body 10).

  The side wall 20e and the side wall 20i (two-layer side walls) of the second cylindrical body 20 cover the side wall 10a of the first cylindrical body 10, and the bottom wall 20f of the second cylindrical body 20 is the first cylindrical body 10. The bottom wall 10b of the second cylindrical body 20, the side wall 20g of the second cylindrical body 20 covers the side wall 10c of the first cylindrical body 10, and the upper wall 20h of the second cylindrical body 20 is above the first cylindrical body 10. It covers the wall 10d.

  As shown in FIGS. 1 to 3, the second cylindrical body 20 of the protector 1 has a plurality of (six in this example) slits 21 (linearly shaped in the central portion excluding both end portions in the axial direction). Through-holes) are provided at positions separated from each other in the axial direction. Each slit 21 extends so as to straddle the upper wall 20h, the side wall 20g, and the bottom wall 20f (that is, three continuous cylindrical walls). For this reason, each slit 21 can be opened and closed according to the curve of the protector 1 (electric wire 2).

  Specifically, as shown in FIG. 1A, each slit 21 is closed when the protector 1 (the electric wire 2) extends linearly. On the other hand, as shown in FIGS. 1 (b), 2 and 3 (a), each slit 21 is open when the protector 1 (the electric wire 2) is bent to one side. As described above, the plurality of slits 21 are opened and closed in accordance with the curve to the one side of the protector 1, so that the second cylindrical body 20 (and hence the protector 1) is curved as compared with the case where the slit 21 is not provided. It becomes easy.

  As shown in FIG. 2 (b), the first cylindrical body 10 of the protector 1 has a plurality of (six in this example) slits 11 (straight lines) in the central portion excluding both end portions in the axial direction. Through-holes) are provided at positions separated from each other in the axial direction. The plurality of slits 11 are provided at positions shifted from each other in the axial direction with respect to the plurality of slits 21. Each slit 11 extends so as to straddle the upper wall 10d, the side wall 10c, and the bottom wall 10b (that is, three continuous cylindrical walls). For this reason, each slit 11 can be opened and closed according to the curve to the one side of the protector 1 (electric wire 2) similarly to the slit 21.

  Specifically, as shown in FIG. 1A, each slit 11 is closed when the protector 1 (the electric wire 2) extends linearly. On the other hand, as shown in FIG. 1B, FIG. 2, and FIG. 3A, each slit 11 is open when the protector 1 (the electric wire 2) is bent to one side (see FIG. 2). Thus, one side of the 1st cylindrical body 10 (hence, protector 1) compared with the case where the slit 11 is not provided by opening and closing the some slit 11 according to the curve to the one side of the protector 1. FIG. To bend easily.

  Furthermore, as described above, the slit 11 of the first cylindrical body 10 and the slit 21 of the second cylindrical body 20 are arranged at positions shifted from each other in the axial direction. Therefore, even if both slits 11 and 21 are opened in accordance with the curve to the one side of the protector 1, as shown in FIG. 2, the opened slit 11 of the first cylindrical body 10 is formed on the second cylindrical body 20. The three cylindrical walls (the upper wall 20h, the side wall 20g, and the bottom wall 20f) are closed from the outside, and the slit 21 that the second cylindrical body 20 is open has three cylindrical walls (the upper wall) of the first cylindrical body 10. 10d, side wall 10c, and bottom wall 10b). As a result, the electric wire 2 inserted into the protector 1 is not exposed to the outside over the extending range of the protector 1 in the axial direction.

  As shown in FIG. 1B, FIG. 2 and FIG. 3A, the side wall 20e and the side wall 20i (two layers) are provided at the respective positions where the slits 21 in the axial direction of the second cylindrical body 20 are provided. The hinge-like fold line 22 for opening and closing the slit 21 is formed so as to extend vertically. Thereby, the softness | flexibility of the protector 1 improves compared with the case where such a crease | fold 22 is not formed.

  The configuration of the protector 1 has been described above with reference to FIGS. Next, a method for manufacturing the protector 1 will be described with reference to FIGS. 4 and 5.

  First, a rectangular resin plate member 30 as shown in FIG. 4 is prepared. Hereinafter, for the convenience of explanation, as shown in FIG. 4, the length direction and the width direction are defined in the plate material 30. The length direction and the width direction are orthogonal to each other. The length direction corresponds to the axial direction of the protector 1, and the width direction corresponds to the circumferential direction of the protector 1.

  Next, in the plate member 30, a plurality of (eight in this example) fold lines 31 extending linearly in the length direction over the entire region in the width direction are formed at positions separated from each other in the width direction, and In the central portion excluding both ends in the length direction, a plurality of (six in this example) fold lines 32 extending linearly in the width direction are formed at positions separated from each other in the length direction.

  Hereinafter, for convenience of explanation, in the width direction, each region partitioned and formed on the plate member 30 by a plurality of fold lines 31 is referred to as a region to i region as shown in FIG. Here, the a region, the b region, the c region, and the d region correspond to the one side wall 10a, the bottom wall 10b, the side wall 10c, and the top wall 10d in the first tubular body 10, respectively. Yes. The e region, the f region, the g region, the h region, and the i region are respectively the one side wall 20e, the bottom wall 20f, the side wall 20g, the top wall 20h, and the one side in the second cylindrical body 20. Corresponds to the side wall 20i.

  Next, in the plate member 30, at each position where the crease 32 is formed in the length direction, an opening 33 (through hole) extending in a slit shape in the width direction over three continuous regions f, g, and h. It is formed. The opening 33 corresponds to the slit 21 of the second cylindrical body 20 of the protector 1.

  Next, in the plate member 30, in the length direction, slits are formed in the width direction over three continuous regions b, c, and d at respective positions shifted by a predetermined distance from the respective positions where the creases 32 are formed. An opening 34 (through hole) is formed extending in the direction. Here, the predetermined distance is preferably half of the interval between the adjacent creases 32. The opening 34 corresponds to the slit 11 of the first tubular body 10 of the protector 1. In the above description, the creases 31, 32, the opening 33, and the opening 34 are formed in this order. However, these may be formed simultaneously with respect to the manufactured plate member 30, and moreover, It may be formed (formed) at the same time as the plate 30 is manufactured.

  Next, as shown in FIG. 5 (b), the plate 30 is wound while bending a plurality of creases 31 in order from the a region to the d region in the width direction at right angles in the right direction in the drawing. Let me turn. Thereby, the 1st cylindrical body 10 in which the slit 11 shown in FIGS. 1-3 was formed is formed. Further, as shown in FIG. 5 (c), the plate member 30 is wound while bending the f region to the i region in the width direction at right angles in order to the left in the drawing using the plurality of fold lines 31 in order. Let me turn. Thereby, the 2nd cylindrical body 20 in which the slit 21 shown in FIGS. 1-3 was formed is formed. As a result, the protector 1 including the first cylindrical body 10 and the second cylindrical body 20 is completed. In addition, the part of the crease | fold 32 in the area | regions e and i shown in FIG. 4 respond | corresponds to the crease | fold 22 (FIG.1 (b), FIG.2 and FIG.3 (a)) of the completed protector 1. FIG.

  As described above, the protector 1 according to the embodiment of the present invention has a multilayer structure in which the second cylindrical body 20 is disposed so as to cover the first cylindrical body 10. The first cylindrical body 10 and the second cylindrical body 20 are formed with slits 11 and 21, respectively. For this reason, the protector 1 can be easily deformed (curved). Furthermore, the slit 11 of the first cylindrical body 10 and the slit 21 of the second cylindrical body 20 are arranged at positions shifted from each other in the axial direction. Therefore, even if both slits 11 and 21 are opened in accordance with the deformation (curvature) of the protector 1, the open slit 11 of the first cylindrical body 10 is blocked from the outside by the cylindrical wall of the second cylindrical body 20. Since the open slit 21 of the second cylindrical body 20 is closed from the inside by the cylindrical wall of the first cylindrical body 10, the electric wire 2 inserted inside is not exposed to the outside. Therefore, the protector 1 can achieve both the ease of deformation of the protector 1 and the improvement of the protection performance of the electric wire 2 inserted into the protector 1.

  Furthermore, the protector 1 can be easily formed by rounding the plate material 30 after providing the openings 33 and 34 in one plate material 30.

  Further, the second cylindrical body 20 has a square cylindrical shape, and has a slit 21 extending so as to straddle three cylindrical walls (an upper wall 20h, a side wall 20g, and a bottom wall 20f). The wall (side walls 20e, 20i) has a hinge-like fold 22 for opening and closing the slit 21. Therefore, since the slit 21 of the 2nd cylindrical body 20 can be opened and closed easily centering on this crease | fold 22, the flexibility of the protector 1 can be improved compared with the case where there is no such crease | fold.

  In the first cylindrical body 10, a hinge-like fold for opening and closing the slit 11 is not formed on one cylindrical wall (one side wall 10a) (see FIG. 4). For this reason, since it becomes difficult to open and close the slit 11 of the 1st cylindrical body 10, it can suppress that the rigidity of the protector 1 becomes small too much. On the other hand, when a hinge-like fold for opening / closing the slit 11 is formed on one cylindrical wall (one side wall 10a), the slit 11 of the first cylindrical body 10 is easily opened / closed around this fold. Therefore, the flexibility of the protector 1 can be further improved.

<Other forms>
In addition, this invention is not limited to said each embodiment, A various modification can be employ | adopted within the scope of the present invention. For example, the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like can be made as appropriate. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  For example, in the above embodiment, the protector 1 (a multilayer structure including the first cylindrical body 10 and the second cylindrical body 20) has a rectangular cylindrical shape. On the other hand, the protector 1 may have a cylindrical shape, or may have a polygonal cylindrical shape with five or more corners.

  Furthermore, in the said embodiment, all the several slit 11 of the 1st cylindrical body 10 and the several slit 21 of the 2nd cylindrical body 20 are formed in the same range in the circumferential direction of the protector 1. FIG. Thereby, the protector 1 can be bent only to one side. On the other hand, the slit 11 arrange | positioned in the position where the axial direction of the 1st cylindrical body 10 differs is formed in the different range in the circumferential direction of the protector 1, and the position where the axial direction of the 2nd cylindrical body 20 differs. May be formed in different ranges in the circumferential direction of the protector 1. In this case, the protector 1 can be bent three-dimensionally. Moreover, the space | interval (slit pitch) between slits does not necessarily need to be the same between all the slits, and may differ between each slit according to the softness | flexibility etc. which are required for the protector 1.

  Furthermore, in the said embodiment, the crease | fold 22 is provided as a hinge part for making opening / closing of the slit 11 easy. On the other hand, the protector 1 may have a hinge part other than the fold line 22 as long as it has a function as a hinge.

  Further, in the above embodiment, the protector 1 is made of resin, but the protector 1 may be made of paper. Furthermore, in the said embodiment, although the electric wire 2 is penetrated by the protector 1, long objects other than an electric wire may be penetrated.

Here, the embodiment of the protector 1 according to the present invention described above and the characteristics of the manufacturing method thereof are briefly summarized and listed in the following (1) to (4).
(1)
A cylindrical protective device (1) in which an object (2) can be inserted,
A first tubular body (10) that defines a hollow portion through which the object (2) is inserted, and a second tubular body that defines a hollow portion in which the first tubular body (10) is accommodated. (20) and a multilayer structure in which the second cylindrical body (20) is disposed so as to cover the first cylindrical body (10),
The first cylindrical body (10)
A plurality of first slits (11) spaced apart from each other in the axial direction of the protector (1), the first tubular body (10) being openable and closable according to deformation of the protector (1) A plurality of first slits (11) penetrating the cylindrical wall in the thickness direction,
The second cylindrical body (20)
A plurality of second slits (21) spaced apart from each other in the axial direction of the protector (1), and the second cylindrical body (20) can be opened and closed in accordance with deformation of the protector (1). A plurality of second slits (21) penetrating the cylindrical wall in the thickness direction,
In a state where the first slit (11) and the second slit (21) are arranged at positions shifted from each other in the axial direction, the first cylindrical body (10) and the second cylindrical body ( 20) and are connected inseparably,
Protective equipment.
(2)
In the protective equipment (1) according to (1) above,
The first cylindrical body (10)
A plate material in which a first opening (34) corresponding to the first slit (11) is provided in part and a second opening (33) corresponding to the second slit (21) is provided in the other part ( The part of 30) has a winding shape rounded around the axis;
The second cylindrical body (20)
The other part of the plate member (30) has a winding shape that is rounded so as to cover the first tubular body (10).
Protective equipment.
(3)
In the protective equipment (1) described in (2) above,
The first cylindrical body (10)
The first slit (11) has a quadrangular cylindrical shape having four cylindrical walls and extends so as to straddle the three cylindrical walls (10b, 10c, 10d),
The second cylindrical body (20)
It has the shape of a square cylinder having four cylinder walls, the second slit (21) extending so as to straddle the three cylinder walls (20f, 20g, 20h), and one cylinder The wall (20e, 20i) has a hinge part (22) for opening and closing the second slit (21),
Protective equipment.
(4)
It is a manufacturing method of the cylindrical protective device (1) which can insert a target object (2) inside,
The protective equipment (1)
A first tubular body (10) defining a hollow portion through which the object (2) is inserted and having a plurality of first slits (11) spaced apart from each other in the axial direction of the protective device; A second cylindrical body (20) that defines a hollow portion in which the first cylindrical body (10) is accommodated and has a plurality of second slits (21) spaced apart from each other in the axial direction on a cylindrical wall; And having a multilayer structure in which the second tubular body (20) is disposed so as to cover the first tubular body (10),
The manufacturing method is as follows:
Forming a plurality of first openings (34) extending in a slit shape in the width direction in a part of the plate member (30) having a width direction and a length direction so as to be separated from each other in the length direction;
In the other part of the plate (30), a plurality of second openings (33) extending in a slit shape in the width direction are separated from each other in the length direction, and the first openings (34) and Forming the second openings (33) so as to be arranged at positions shifted from each other in the length direction;
The first cylindrical shape having the plurality of first slits (11) formed by the plurality of first openings (34) by rounding the part of the plate (30) along the width direction. Forming a body (10);
The plurality of second slits (21) configured by the plurality of second openings (33) by rolling the other part of the plate (30) so as to cover the first cylindrical body (10). Forming the second tubular body (20) having:
Manufacturing method of protective equipment.

1 Protector (Protective equipment)
2 Electric wire (object)
10 1st cylindrical body 11 Slit (1st slit)
20 Second cylindrical body 21 Slit (second slit)
22 Fold (Hinge)
30 Plate material 33 Opening (second opening)
34 Opening (first opening)

Claims (4)

A cylindrical protective device through which an object can be inserted,
A first tubular body that defines a hollow portion through which the object is inserted; and a second tubular body that defines a hollow portion in which the first tubular body is housed. Having a multilayer structure in which the second cylindrical body is disposed so as to cover the cylindrical body;
The first cylindrical body is
A plurality of first slits spaced apart from each other in the axial direction of the protector, and a plurality of first slits penetrating through the cylindrical wall of the first tubular body in the thickness direction so as to be opened and closed in accordance with deformation of the protector Having a first slit,
The second cylindrical body is
A plurality of second slits spaced apart from each other in the axial direction of the protector, and a plurality of second slits penetrating through the cylindrical wall of the second tubular body in the thickness direction so as to be opened and closed in accordance with deformation of the protector A second slit,
In a state where the first slit and the second slit are arranged at positions shifted from each other in the axial direction, the first cylindrical body and the second cylindrical body are connected so as not to be separated,
Protective equipment. The protective device according to claim 1,
The first cylindrical body is
The part of the plate material in which the first opening corresponding to the first slit is provided in part and the second opening corresponding to the second slit is provided in the other part is wound around the axis. Having a round shape,
The second cylindrical body is
The other part of the plate member has a winding shape that is rounded so as to cover the first cylindrical body,
Protective equipment. The protective equipment according to claim 2,
The first cylindrical body is
The first slit has a quadrangular cylindrical shape having four cylindrical walls, and extends to straddle the three cylindrical walls,
The second cylindrical body is
It has a quadrangular cylindrical shape having four cylindrical walls, has the second slits extending so as to straddle the three cylindrical walls, and opens and closes the second slits in one cylindrical wall Having a hinge part,
Protective equipment. A method of manufacturing a cylindrical protective device through which an object can be inserted,
The protective equipment is
A first cylindrical body that defines a hollow portion through which the object is inserted and has a plurality of first slits separated from each other in the axial direction of the protector on the cylindrical wall, and the first cylindrical body are accommodated. And a second cylindrical body having a plurality of second slits that are separated from each other in the axial direction on the cylindrical wall, and the second cylinder so as to cover the first cylindrical body Having a multi-layered structure in which
The manufacturing method is as follows:
Forming a plurality of first openings extending in a slit shape in the width direction in a part of a plate material having a width direction and a length direction so as to be separated from each other in the length direction;
In the other part of the plate material, a plurality of second openings extending in a slit shape in the width direction are separated from each other in the length direction, and the first opening and the second opening have the length. Forming so as to be arranged at positions shifted from each other in the direction;
Forming the first cylindrical body having the plurality of first slits formed by the plurality of first openings by rounding the part of the plate material along the width direction;
Forming the second cylindrical body having the plurality of second slits formed by the plurality of second openings by rolling the other portion of the plate material so as to cover the first cylindrical body. And with,
Manufacturing method of protective equipment.

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