JP2004273410A - Waterproof structure of planar wiring body, and method for forming it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproof structure of a planar wiring body, having a simple structure to enhance waterproof performance, and a simple assembling process, and a method for forming it. <P>SOLUTION: In this waterproof structure of the planar wiring body, wherein a waterproof member 2 is mounted to the outer periphery of the planar wiring body 1 and the waterproof member 2 is stored in the inner space 4 of a housing 3, the waterproof member 2 is formed by a rubber-like elastic material and it has a slit 5 where the planar wiring body 1 is inserted, and the waterproof member 2 is formed so that the width of the slit 5 is narrower than the width of the planar wiring body 1 and the height of the slit 5 is higher than the height of the planar wiring body 1 with the planar wiring body 1 not inserted through the slit 5. The waterproof member 2 is brought into close contact with the periphery of the planar wiring body 1 with the waterproof member 2 stored in the housing 3. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a waterproof structure applied to a connection portion of a planar wiring body or the like.
[0002]
[Prior art]
2. Description of the Related Art When a wiring body is connected to another wiring body, it is widely practiced to attach a waterproof member to the wiring body to have a waterproof structure in order to prevent moisture from entering a connection portion. In the past, round electric wires were generally used as wiring bodies. Recently, however, flat wiring bodies such as flat cables and circuit boards have been increasingly used, and these flat wiring bodies have been used. As for, a waterproof structure for waterproofing the connection portion and the like has been studied.
[0003]
For example, for a waterproof connector used for a flat cable, it is known to provide a seal member so as to cover an outer periphery near a terminal portion of the flat cable (see Patent Document 1). It is also known to provide a sealing member made up of a plurality of elastic blocks at a terminal portion of a flat cable constituting a waterproof connector (see Patent Document 2).
[0004]
[Patent Document 1] JP-A-6-203910 (page 2, column 2, line 25 to page 3, column 4, line 27; see FIGS. 1 to 4)
[Patent Document 2] Japanese Patent Application Laid-Open No. H11-16628 (page 3, column 3, line 15 to page 7, column 12, line 48; see FIGS. 1 to 16)
[0005]
[Problems to be solved by the invention]
By the way, in the waterproof connector described in Patent Literature 1, a pressing member for compressing the seal member is required, and there is a problem that a waterproof structure and an assembling process are complicated. Further, the waterproof connector described in Patent Document 2 simplifies the assembling process to the last, and does not specifically mention further enhancing the waterproofness.
[0006]
Therefore, an object of the present invention is to provide a waterproof structure for a planar wiring body having a simple structure for enhancing waterproofness and an easy assembling process, and a method for forming the same.
[0007]
[Means for Solving the Problems]
According to a first aspect of the present invention, in the waterproof structure of a flat wiring body in which a waterproof member is attached to an outer periphery of the flat wiring body and the waterproof member is housed in a housing, the waterproof member is formed of a rubber-like elastic material. The waterproof member has a slit through which the flat wiring body is inserted, and the width of the slit is the same as that of the flat wiring body when the flat wiring body is not inserted through the slit of the waterproof member. The waterproof member is formed so as to be narrower than the width of the wiring body and the height of the slit is higher than the thickness of the planar wiring body, and the waterproof member is housed in the housing. Are in close contact with the outer periphery of the planar wiring body.
[0008]
According to a second aspect of the present invention, in the first aspect, the slit is formed by a plurality of ridges protruding from an inner surface of the waterproof member.
[0009]
According to a third aspect of the present invention, in the first aspect of the present invention, the height of the internal space of the housing is lower than the height of the waterproof member in a state where the planar wiring body is inserted into the slit, and A cross-sectional area of the internal space is 80% or more and less than 100% of a cross-sectional area of the waterproof member in a state where the planar wiring body is inserted into the slit.
[0010]
According to a fourth aspect of the present invention, in the method for forming a waterproof structure of a flat wiring body in which a waterproof member is attached to an outer periphery of the flat wiring body and the waterproof member is housed in a housing, the waterproof member is formed of a rubber-like elastic material. The waterproof member has a slit through which the planar wiring body is not inserted into the slit of the waterproof member. The slit is formed to be narrower than the width of the planar wiring body, and the height of the slit is formed to be higher than the thickness of the planar wiring body, and the width of the slit is set to be equal to or larger than the width of the planar wiring body. In this state, the flat wiring body is inserted into the slit, and thereafter, the waterproof member is housed in the housing so that the waterproof member is brought into close contact with the outer periphery of the flat wiring body. And butterflies.
[0011]
A fifth aspect of the present invention is characterized in that, in the fourth aspect of the present invention, a chamfering process is applied to a front end portion of the planar wiring body in advance.
[0012]
According to a sixth aspect of the present invention, in the fourth aspect, when the flat wiring body is inserted through the slit in a state where the width of the slit is equal to or larger than the width of the flat wiring body, The width of the slit is expanded to be equal to or greater than the width of the planar wiring body by pressurizing the atmosphere.
[0013]
According to a seventh aspect of the present invention, in the invention of the sixth aspect, when the width of the slit is expanded to be equal to or larger than the width of the planar wiring body by pressurizing the atmosphere in the waterproof member, the height of the slit is increased. A member for suppressing the expansion of the waterproof member is attached to the outside of the waterproof member.
[0014]
That is, the waterproof structure of the planar wiring body of the present invention has the above-described configuration, so that the waterproof member can be easily attached to the planar wiring body, and the waterproof structure has a sufficient waterproof performance.
[0015]
Further, according to the method for forming a waterproof structure of a planar wiring body of the present invention, a waterproof structure having sufficient waterproof performance can be easily applied to the planar wiring body.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings.
[0017]
FIG. 1 is a side sectional view schematically showing a basic example of a waterproof structure for a planar wiring body according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a planar wiring body, 2 denotes a waterproof member provided on the outer periphery of the planar wiring body 1, 3 denotes a housing provided on the outer periphery of the waterproof member 2, and the waterproof member 2 is provided inside the housing 3. It is housed in the space 4. The waterproof member 2 is formed of a rubber-like elastic material, for example, a natural rubber material, a synthetic rubber material (eg, silicone rubber), an elastomer, or the like. Further, the waterproof member 2 is formed with a slit 5 through which the planar wiring body 1 is inserted. The front and rear ends of the slit 5 are provided to improve workability when the planar wiring body 1 is inserted. A chamfer 2a is provided.
[0018]
2A and 2B are diagrams for explaining a process of attaching a waterproof member to a planar wiring body, wherein FIG. 2A is a front view of the waterproof member, FIG. 2B is a front view of the planar wiring body, and FIG. FIG. 3D is a front view illustrating a state where a waterproof member is attached to the planar wiring body, and FIG. 4D is a cross-sectional view illustrating a state where the waterproof member is attached to the planar wiring body. In FIG. 2, reference numeral 6 denotes a gap between the planar wiring body 1 and the slit 5.
[0019]
2 (c) and 2 (d), the gap 6 in the state where the planar wiring body 1 is inserted through the slit 5 of the waterproof member 2 indicates that the gap 6 is allowed to exist. It goes without saying that 6 need not be present. From the viewpoint that the work of inserting the planar wiring body 1 into the slit 5 of the waterproof member 2 can be easily performed, it is desirable that the gap 6 slightly exists.
[0020]
Further, in FIG. 2, in a state in which the planar wiring member 1 to the slit 5 of the waterproof member 2 is not inserted, the width W ₁ of the slit 5 is narrower than the width W ₂ of the planar wiring member 1, and the slits 5 high is t ₁ is higher than the thickness t ₂ of the planar wiring member 1. When the flat wiring body 1 is inserted through the slit 5, the waterproof member 2 extends in the left-right direction in the drawing, and the height of the waterproof member 2 is the height H before the flat wiring body 1 is inserted. _1, changes in the height _{H 2} of after the planar wiring member 1 is inserted _{(H 1>} H 2).
[0021]
3A and 3B are diagrams for explaining a process of housing a waterproof member into which a flat wiring body has been inserted into a housing. FIG. 3A is a front view of the waterproof member through which a flat wiring body has been inserted. () Is a front view of the housing, and (C) is a front view showing a state in which the waterproof member is housed in the housing.
[0022]
FIG. 3A is a view similar to FIG. 2C described above, and the existence of the gap 6 in a state where the planar wiring body 1 is inserted into the slit 5 of the waterproof member 2 is allowed. In a state where the member 2 is accommodated in the housing 3, as shown in FIG. 3 (c), the waterproof member 2 comes into close contact with the outer periphery of the planar wiring body 1, and the gap 6 does not exist. Thus, the waterproof performance of the planar wiring body 1 is satisfied.
[0023]
Here, in order to satisfy the waterproof performance of the planar wiring body 1, the height H ₃ of the internal space 4 of the housing ₃ is determined by the height of the waterproof member 2 in a state where the planar wiring body 1 is inserted through the slit 5. The cross-sectional area S ₂ of the internal space 4 of the housing 3 is lower than the height H ₂ , and is 80% or more and less than 100% of the cross-sectional area S ₁ of the waterproof member 2 in a state where the planar wiring body 1 is inserted into the slit 5. Need to be When these conditions are not satisfied, a gap is formed between the planar wiring body 1 and the waterproof member 2 in FIG. 3C as in FIG. Performance will be degraded.
[0024]
The rubber-like elastic material forming the waterproof member 2 preferably has a hardness in the range of A30 to A50 as measured by a durometer described in Japanese Industrial Standards (JIS K6253).
[0025]
As described above, an example of the embodiment of the present invention has been described. However, this is merely a basic one. For example, the shape of the waterproof member 2 can be slightly changed. The example will be described below as an application example.
[0026]
FIGS. 4A and 4B are views showing an example of an application example of the waterproof member used in the embodiment of the present invention, wherein FIG. 4A is a side view, FIG. 4B is a front view, and FIG.
[0027]
In FIG. 4, a plurality of outer peripheral surface projections 22 are circumferentially arranged on an outer surface 21 a of the main body 21 of the waterproof member 2 (hereinafter, referred to as a main body outer surface 21 a). A plurality of inner peripheral surface protrusions 23 are arranged on the inner surface 21 b of the main body 21 (hereinafter, referred to as the main body inner surface 21 b) so as to form the slit 5. Other items are the same as those described with reference to FIG.
[0028]
FIG. 5 is a side sectional view showing a state in which the planar wiring body is inserted through the waterproof member of FIG. In FIG. 5, as in FIGS. 2 (c), (d) and FIG. 3 (a), the gap 6 in the state where the planar wiring body 1 is inserted into the slit 5 of the waterproof member 2 is allowed to exist. It is needless to say that the gap 6 does not need to exist.
[0029]
FIG. 6 is a side sectional view showing a state in which the waterproof member into which the planar wiring body is inserted as shown in FIG. 5 is housed in the housing. As described above, in FIG. 5, the existence of the gap 6 in a state where the planar wiring body 1 is inserted through the slit 5 of the waterproof member 2 is allowed, but as shown in FIG. 3C, the waterproof member 2 is in close contact with the outer periphery of the planar wiring body 1 as in the case shown in FIG. Thus, the waterproof performance of the planar wiring body 1 is satisfied.
[0030]
As described above, the waterproof structure of the planar wiring body of the present invention has been described. However, there is a suitable forming method for the waterproof structure of the planar wiring body of the present invention. Hereinafter, the embodiment will be described.
[0031]
The method for forming the waterproof structure of the planar wiring body according to the embodiment of the present invention specifically uses the planar member illustrated in FIG. 1 or FIG. 6 using the waterproof member illustrated in FIG. 2 or FIG. This is a method for forming a waterproof structure of the wiring body. Hereinafter, description will be made using the reference numerals shown in FIGS.
[0032]
Here, the feature of the present embodiment is in the step of attaching the waterproof member 2 to the planar wiring body 1, and the waterproof member 2 is slit when the planar wiring body 1 is not inserted through the slit 5. 5 is formed to be narrower than the width of the planar wiring body 1 and the height of the slit 5 is formed to be higher than the thickness of the planar wiring body 1.
[0033]
Further, when attaching the waterproof member 2 to the planar wiring body 1, the flat wiring body 1 may be inserted through the slit 5 with the width of the slit 5 of the waterproof member 2 being equal to or greater than the width of the planar wiring body 1. This is a feature of the embodiment.
[0034]
After that, the waterproof member 2 is housed in the housing 3 and the waterproof member 2 is brought into close contact with the outer periphery of the planar wiring body 1, whereby a waterproof structure of the planar wiring body can be formed. Hereinafter, a specific example of the present embodiment will be described.
[0035]
FIG. 7 is an explanatory view schematically showing an example of a waterproof member attaching device for realizing the method for forming a waterproof structure of a planar wiring body according to the embodiment of the present invention. In FIG. 7, the description will be made using the waterproof member shown in FIG. 4, but the shape of the waterproof member is not limited to that shown in FIG. 4, and may be changed as appropriate.
[0036]
FIG. 8 is a cross-sectional view schematically illustrating a step of forming a waterproof structure on a planar wiring body by the waterproof member attaching device illustrated in FIG. 7, wherein FIG. ) Shows a state immediately before the waterproof member is attached to the planar wiring body, (c) shows a state where the waterproof member is expanded by pressure, and (d) shows a state where the waterproof member is attached to the planar wiring body. Show.
[0037]
7 and 8, reference numeral 7 denotes a waterproof member attaching device for attaching the waterproof member 2 to the planar wiring body 1 and includes a first box-shaped portion 71 and a second box-shaped portion 72. . When the waterproof member mounting device 7 is used, the first box-shaped portion 71 and the second box-shaped portion 72 are connected via the waterproof member 2.
[0038]
The first box-shaped portion 71 is provided with an introduction portion 73 for introducing the planar wiring body 1. A space 71a is provided inside the first box-shaped portion 71, a space 73a is provided inside the introduction portion 73, and the space 71a and the space 73a communicate with each other. Further, the first box-shaped portion 71 is provided with a through hole 74 reaching the space 71a. On the other hand, a space 72a is provided inside the second box-shaped portion 72.
[0039]
When the first box-shaped portion 71 and the second box-shaped portion 72 are connected via the waterproof member 2, the space 71a, the space 72a, and the space 73a communicate with each other, and the through-hole 74 is provided. When the gas such as air is sent into the space 71a from the outside, the spaces 71a, 72a, 73a and the inside of the waterproof member 2 are pressurized, and the slit 5 of the waterproof member 2 is expanded. It can be easily inserted.
[0040]
In FIGS. 7 and 8, an inlet 75 of the introduction portion 73 (hereinafter, referred to as an “introduction portion entrance”) is provided so that gas supplied from the through hole 74 does not easily escape from the space 73 a in the introduction portion 73. It is desirable to have a structure, for example, to make the introduction part entrance 75 an airtight structure.
[0041]
As described above, in the method of forming the waterproof structure of the planar wiring body using the waterproof member mounting device 7 illustrated in FIGS. 7 and 8, the width of the slit 5 of the waterproof member 2 is changed to the width of the planar wiring body 1. When the planar wiring body 1 is inserted into the slit 5 in the above state, the atmosphere in the waterproof member 2 is pressurized to expand the width of the slit 5 to be equal to or greater than the width of the planar wiring body 1. Hereinafter, steps of a method of forming a waterproof structure of a planar wiring body using the waterproof member attaching device 7 illustrated in FIG. 7 will be described with reference to FIGS.
[0042]
Step 1: As shown in FIG. 8A, the first box-shaped portion 71 and the second box-shaped portion 72 are opposed to each other, and the waterproof member 2 is attached to the second box-shaped portion 72. Further, the planar wiring body 1 is inserted through the introduction portion 73 of the first box-shaped portion 71.
[0043]
Step 2: As shown in FIG. 8B, the first box-shaped portion 71 and the second box-shaped portion 72 are connected via the waterproof member 2, and the waterproof member attaching device 7 is assembled. Until this step, the width of the slit 5 of the waterproof member 2 is smaller than the width of the planar wiring body 1.
[0044]
Step 3: As shown in FIG. 8C, a gas such as air is sent into the space 71a from the through hole 74, and the atmosphere in the waterproof member 2 is pressurized to change the width of the slit 5 of the waterproof member 2 to a planar wiring. The flat wiring body 1 can be easily inserted into the slit 5 by extending the width of the flat wiring body 1 beyond the width of the body 1.
[0045]
Step 4: As shown in FIG. 8D, the planar wiring body 1 is inserted with the slit 5 of the waterproof member 2 expanded.
[0046]
Step 5: The pressure in the spaces 71a, 72a, 73a is returned to substantially the atmospheric pressure, and then the waterproof member attaching device 7 is removed.
[0047]
As described above, in the present embodiment, a waterproof structure having sufficient waterproof performance can be easily applied to the planar wiring body by the above five steps.
[0048]
Here, in Step 5 described above, desirable items from the viewpoint of making the waterproof member attaching device 7 easy to remove are described. For example, it is desirable that the first box-shaped portion 71 and the introduction portion 73 be configured to be able to be divided into two or more so as to sandwich the planar wiring body 1. It is desirable to provide a through-hole or the like (not shown) for returning the pressure in the space 72a to substantially the atmospheric pressure.
[0049]
In the waterproof member mounting device 7 illustrated in FIGS. 7 and 8, when the width of the slit 5 is expanded to be equal to or more than the width of the planar wiring body 1 by pressurizing the atmosphere in the waterproof member 2, the height of the slit 5 is increased. It is desirable to attach a member that suppresses expansion in the vertical direction to the outside of the waterproof member 2. An example will be described below.
[0050]
FIG. 9 shows a waterproof member mounting device for realizing a method for forming a waterproof structure of a planar wiring body according to an embodiment of the present invention, in which a member for suppressing expansion of a slit of a waterproof member in a height direction is mounted. It is explanatory drawing which shows an example schematically. In FIG. 9, reference numeral 8 denotes a member (hereinafter, referred to as a "shaping member") that suppresses expansion of the slit 5 of the waterproof member 2 in the height direction.
[0051]
The shaping member 8 is composed of, for example, an upper member (hereinafter, referred to as an “upper member”) 8a and a lower member (hereinafter, referred to as a “lower member”) 8b with the waterproof member 2 interposed therebetween. In the waterproof member mounting device 7 illustrated in FIG. 2, the upper member 8a is installed on the upper side of the waterproof member 2 and the lower member 8b is installed on the waterproof member 2 respectively.
[0052]
The shaping member 8 allows the width of the slit 5 to be efficiently expanded to be equal to or larger than the width of the planar wiring body 1 when the atmosphere in the waterproof member 2 is pressurized.
[0053]
As described above, the method of inserting the planar wiring body 1 into the slit 5 after expanding the width of the slit 5 to be equal to or more than the width of the planar wiring body 1 by pressurizing the atmosphere in the waterproof member 2 has been described. The method for forming the waterproof structure of the planar wiring body according to the embodiment is not limited to the above-described method. An example will be described below.
[0054]
For example, by attaching a member having a shape similar to the shaping member 8 shown in FIG. 9 to the outside of the waterproof member 2 and pressing the member in the height direction of the slit 5 of the waterproof member 2, It is also possible to insert the flat wiring body 1 into the slit 5 in a state where the width is increased to be equal to or larger than the width of the flat wiring body 1.
[0055]
In addition, in order to realize the method for forming a waterproof structure of a planar wiring body according to the present embodiment, it is also possible to optimize the structure of the waterproof member 2 and optimize the structure of the distal end of the planar wiring body 1. It is effective. An example will be described below.
[0056]
FIG. 10 is a cross-sectional view showing an example of a waterproof member suitable for the method for forming a waterproof structure of a planar wiring body according to an embodiment of the present invention, wherein (a) is an initial state, and (b) is a planar wiring. (C) shows a state immediately before the body is inserted, and (c) shows a state in which the planar wiring body is inserted.
[0057]
In the waterproof member 2 illustrated in FIG. 10, the inner peripheral surface protrusion 23 is formed so as to substantially define only the height of the slit 5 of the waterproof member 2. By forming the inner peripheral surface protrusions 23 in this manner, it is possible to prevent a part of the inner peripheral surface protrusions 23 from being subjected to an unnecessary stress when the planar wiring body 1 is inserted into the slit 5.
[0058]
FIG. 11 is a perspective view showing an example of the shape of the distal end portion of the flat wiring body suitable for the method for forming the waterproof structure of the flat wiring body according to the embodiment of the present invention. In FIG. 11, a chamfer 11 is formed at the tip of the planar wiring body 1. As described above, by using the planar wiring body 1 whose front end is processed in advance, when the planar wiring body 1 is inserted into the slit 5 of the waterproof member 2, a part of the inner peripheral surface projection 23 is more than necessary. It is possible to prevent stress from being applied.
[0059]
In the case where the flat wiring body 1 having the chamfered portion 11 shown in FIG. 11 is used, the relationship between the width of the slit 5 of the waterproof member 2 and the width of the flat wiring body 1 It is sufficient that the width of the slit 5 is smaller than the width of the portion where the chamfered portion 11 is not formed in the planar wiring body 1 in a state where the wiring body 1 is not inserted. When the wiring body 1 is inserted, the width of the slit 5 only needs to be equal to or greater than the width of the portion where the chamfered portion 11 of the planar wiring body is formed. Therefore, depending on the shape of the chamfered portion 11, the flat wiring body 1 can be inserted through the slit 5 without expanding the width of the slit 5.
[0060]
As described above, the present invention can take the above-described embodiments. However, these are merely examples, and the embodiments of the present invention may be variously modified within the scope of the matters described in the claims. Can be allowed, and it is needless to say that the present invention is not limited to the above.
[0061]
【The invention's effect】
As described above, according to the present invention, in the waterproof structure of a flat wiring body in which a waterproof member is attached to the outer periphery of the flat wiring body and the waterproof member is housed in the housing, the waterproof member is made of rubber-like elastic material. The waterproof member has a slit formed of a material and through which the planar wiring body is inserted, and the width of the slit is reduced in a state where the planar wiring body is not inserted into the slit of the waterproof member. The flat wiring body is formed to be narrower than the width and the height of the slit is formed to be higher than the thickness of the flat wiring body, and the waterproof member is housed in the housing, Since the waterproof member is in close contact with the outer periphery of the planar wiring body, the waterproof member can be easily attached to the planar wiring body, and the waterproof structure has a sufficient waterproof performance. That.
[0062]
In the present invention, the height of the internal space of the housing is lower than the height of the waterproof member in a state where the planar wiring body is inserted into the slit, and the cross-sectional area of the internal space of the housing is When the cross-sectional area of the waterproof member in a state where the planar wiring body is inserted through the slit is 80% or more and less than 100%, the waterproof structure is further improved in waterproof performance.
[0063]
In the method for forming a waterproof structure of a planar wiring body according to the present invention, the width of the slit is formed to be smaller than the width of the planar wiring body in a state where the planar wiring body is not inserted into the slit of the waterproof member. In addition, the height of the slit is formed to be higher than the thickness of the planar wiring body, and when attaching the waterproof member 2 to the planar wiring body 1, the width of the slit 5 of the waterproof member 2 is changed to the width of the planar wiring body 1. Since the flat wiring body 1 is inserted through the slit 5 in a state where the width is equal to or more than the width, a waterproof structure with sufficient waterproof performance can be easily applied to the flat wiring body.
[Brief description of the drawings]
FIG. 1 is a side sectional view schematically showing a basic example of a waterproof structure of a planar wiring body according to an embodiment of the present invention.
FIGS. 2A and 2B are views for explaining a process of attaching a waterproof member to the planar wiring body, wherein FIG. 2A is a front view of the waterproof member, FIG. 2B is a front view of the planar wiring body, and FIG. FIG. 3D is a front view illustrating a state where a waterproof member is attached to the planar wiring body, and FIG. 4D is a cross-sectional view illustrating a state where the waterproof member is attached to the planar wiring body.
FIGS. 3A and 3B are views for explaining a process of housing a waterproof member into which a planar wiring body is inserted in a housing, wherein FIG. 3A is a front view of the waterproof member through which the planar wiring body is inserted; () Is a front view of the housing, and (C) is a front view showing a state in which the waterproof member is housed in the housing.
FIG. 4 is a view showing an example of an application example of the waterproof member used in the embodiment of the present invention, wherein (A) is a side view, (B) is a front view, and (C) is a side sectional view.
FIG. 5 is a side sectional view showing a state where a planar wiring body is inserted into the waterproof member of FIG. 4;
FIG. 6 is a side sectional view showing a state in which the waterproof member into which the planar wiring body is inserted as shown in FIG. 5 is accommodated in a housing.
FIG. 7 is an explanatory view schematically showing an example of a waterproof member mounting device for realizing the method for forming a waterproof structure of a planar wiring body according to an embodiment of the present invention.
8A and 8B are cross-sectional views schematically illustrating a process of forming a waterproof structure on a planar wiring body by the waterproof member attaching device illustrated in FIG. 7, wherein FIG. 8A is an initial state, and FIG. A state immediately before the waterproof member is attached to the planar wiring body, (C) shows a state where the waterproof member is expanded by pressurization, and (D) shows a state where the waterproof member is attached to the planar wiring body.
FIG. 9 shows a waterproof member mounting device for realizing a method for forming a waterproof structure of a planar wiring body according to an embodiment of the present invention, in which a member for suppressing expansion of a slit of a waterproof member in a height direction is mounted. It is explanatory drawing which shows an example schematically.
FIGS. 10A and 10B are cross-sectional views illustrating an example of a waterproof member suitable for the method for forming a waterproof structure of a planar wiring body according to an embodiment of the present invention, wherein FIG. (C) shows a state immediately before the body is inserted, and (c) shows a state in which the planar wiring body is inserted.
FIG. 11 is a perspective view showing an example of a shape of a front end portion of a flat wiring body suitable for a method for forming a waterproof structure of a flat wiring body according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Planar wiring body 2 Waterproof member 2a Chamfer part 3 Housing 4 Internal space 5 Slit 6 Gap 7 Waterproof member mounting device 8 Shaping member 8a Upper member 8b Lower member 11 Chamfer 21 Main part 21a Main part outer surface 21b Main part inner surface 22 Outer peripheral surface protrusion 23 Inner peripheral surface protrusion 71 First box-shaped portion 72 Second box-shaped portion 73 Introducing portion 74 Through hole 75 Introducing portion entrances 71a, 72a, 73a Space

Claims (7)

In a waterproof structure of a flat wiring body, a waterproof member is attached to the outer periphery of the flat wiring body and the waterproof member is housed in a housing.
The waterproof member has a slit formed by a rubber-like elastic material and through which the planar wiring body is inserted,
The waterproof member is formed such that the width of the slit is smaller than the width of the planar wiring body in a state where the planar wiring body is not inserted into the slit of the waterproof member, and the height of the slit is It is formed to be higher than the thickness of the planar wiring body,
The waterproof structure for a planar wiring body, wherein the waterproof member is in close contact with the outer periphery of the planar wiring body in a state where the waterproof member is housed in the housing. The waterproof structure for a planar wiring body according to claim 1, wherein the slit is formed by a plurality of protrusions protruding from an inner surface of the waterproof member. The height of the internal space of the housing is lower than the height of the waterproof member in a state where the planar wiring body is inserted into the slit, and the cross-sectional area of the internal space of the housing is such that the planar wiring is formed in the slit. The waterproof structure for a planar wiring body according to claim 1 or 2, wherein the cross-sectional area of the waterproof member in a state where the body is inserted is 80% or more and less than 100%. In a method for forming a waterproof structure of a flat wiring body in which a waterproof member is attached to an outer periphery of the flat wiring body and the waterproof member is housed in a housing,
The waterproofing member is formed of a rubber-like elastic material and has a slit through which the planar wiring body is inserted,
The waterproof member is formed such that the width of the slit is smaller than the width of the planar wiring body in a state where the planar wiring body is not inserted into the slit of the waterproof member, and the height of the slit is It is formed to be higher than the thickness of the planar wiring body,
The flat wiring body is inserted through the slit in a state where the width of the slit is equal to or larger than the width of the flat wiring body. Thereafter, the waterproof member is housed in the housing and the waterproof member is connected to the flat wiring body. A method for forming a waterproof structure for a planar wiring body, comprising: The method for forming a waterproof structure for a planar wiring body according to claim 4, wherein a chamfering process is performed on a front end of the planar wiring body in advance. When the flat wiring body is inserted into the slit with the width of the slit being equal to or larger than the width of the flat wiring body, the atmosphere in the waterproof member is pressurized to reduce the width of the slit to the flat wiring body. 5. The method for forming a waterproof structure for a planar wiring body according to claim 4, wherein the expansion is performed to a width equal to or greater than the width of the body. When the atmosphere in the waterproof member is pressurized and the width of the slit is expanded to be equal to or greater than the width of the planar wiring body, a member that suppresses the expansion of the slit in the height direction is attached to the outside of the waterproof member. 7. The method for forming a waterproof structure for a planar wiring body according to claim 6, wherein:

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