JP2014229409A - Protector with sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix a wire connection part easily to an insert for preventing inflow of a molding material, without relying only upon an adhesive.SOLUTION: In a protector with a sensor attached to a slide door 1 and detecting existence of a foreign matter when two core wires 31 and 32 provided in a hollow section 12 come into contact, the led-out core wires 31 and 32 are connected with the lead wires 39a and 39b that are connected with a controller 40 at the terminal, and a space 33 is closed with an insert 50 and molded. A wire connection part M is bonded with the core wires 31, 32 and the lead wires 39a and 39b, a recess 53 having an opening covered with right and left lips 52 and 51 curved inward from both sides, is formed on the other end side of the insert 50, the wire connection part M is pushed in the recess 53 from between the lips 52 and 51, and the lips 52 and 51 are brought into elastic contact with the wire connection part M thus holding the wire connection part M in the recess 53.

Description

  The present invention relates to an opening and closing object that opens and closes an opening of a vehicle body, such as a sliding door that moves back and forth of a vehicle body such as a wagon car and a one-box car, a sunroof, and the like. The present invention relates to a protector with a sensor in which a sensor for detecting the presence of a foreign object is output by outputting a corresponding signal when a foreign object such as a finger is sandwiched therebetween.

  As shown in FIG. 7, an automobile that opens and closes the opening of the vehicle body by a sliding door 1 (or back door) such as a wagon car, or an automobile that opens and closes the opening of a vehicle body by a sunroof 2 as shown in FIG. The sensor-equipped protectors 10 and 20 are attached.

For example, a protector 10 with a sensor that protrudes toward the front side of the vehicle body and extends vertically as shown in FIG. 9 is attached to the front end surface of the slide door 1.
As shown in FIGS. 10 and 11, the sensor-equipped protector 10 is attached to the front end surface of the slide door 1, and includes a mounting base 11 having a substantially U-shaped cross section including a vehicle inner wall 11 a, a vehicle outer wall 11 b, and a connecting wall 11 c A hollow portion 12 formed integrally therewith is provided. In the hollow portion 12, a part of a human body (finger or limb) is provided between the slide door 1 and a body side opening (in some cases, a front door (side door)). A sensor (pressure-sensitive sensor) S that detects the pinching and outputs a corresponding electric signal when a foreign object such as a pinch is pinched is attached (see, for example, Patent Document 1 and Patent Document 2).
In addition, in the lower part of the protector 10 with the sensor, a channel portion 13 having a C-shaped cross section is integrally formed on the side of the vehicle interior side wall 11a of the mounting base 11, and the wire harness W connected to the pressure sensor S is held. . A plurality of holding lips 14, 14 are provided inside the mounting base 11, and a core 15 having a substantially U-shaped cross section is embedded in the mounting base 11 in order to increase rigidity. Further, a decorative lip 16 is provided on the vehicle outer side wall 11 b of the mounting base 11.

  The sensor (pressure sensor) S has two core wires (electrode wires) 31 and 32 extending in the vertical direction (longitudinal direction) provided on conductive rubber-like elastic bodies 34 and 35 provided through a space 33. The hollow portion 12 is fixed in the hollow portion 12 so as to be buried. When a foreign object is sandwiched between the slide door 1 and the body side opening when the slide door 1 is closed, the hollow portion 12 is partially pressed. The rubber-like elastic bodies 34 and 35 come into contact with each other and the two core wires 31 and 32 are short-circuited. The change in the electrical signal is transmitted to the control device 40 connected to the lead wire 36 connected to the two core wires 31 and 32 at the lower end portion of the protector 10 with the sensor, thereby detecting the presence of foreign matter. Is done. The lead wire 36 is bundled with a wire harness W in a state of being covered with an insulator, but the tip is a bare wire exposed from the covering portion 37.

In the lower end portion of the protector 10 with the sensor, as shown in FIG. 12, the lead wire 36 is superimposed on the two core wires 31 and 32 drawn in the longitudinal direction (left direction in FIG. 12), and resistance welding is performed. As shown in FIG. 13, the wire is connected by soldering (FIG. 12 (b)), and after the space 33 is exposed at the end portion, it is closed by the insert 25 (FIG. 12 (c)). By molding, a part of the connection part M, the insert 25 and the wire harness W is buried in the mold so as not to be exposed. The reason why the space portion 33 is blocked by the insert 25 is to prevent the molding material from flowing into the space portion 33 during mold molding and preventing the sensor function from being impaired.
Moreover, also in the upper terminal part of the protector 10 with a sensor, as shown in FIG. 14, the legs of the resistor 39 overlap the two core wires 31 and 32 drawn in the longitudinal direction (right direction in FIG. 14). In addition to being connected by resistance welding or soldering, the space portion 33 is closed by the insert 26, and then molding is performed so that the connection portion M, the insert 26, and the resistor 39 are buried inside the mold so as not to be exposed. Yes.
In FIG. 13 and FIG. 14, the part for molding is indicated by a dotted line.

JP 2010-15696 A Japanese Patent No. 3291233

However, since the connection part M and the resistor 39 are affected by the injection molding pressure when embedded in the mold, the lower side of the protector with sensor 10 is not exposed from the mold part or the line is not damaged. In the terminal portion, it is necessary to firmly position the connecting portion M and the lead wire 36 on the surface of the insert 25 with an adhesive, and the connecting portion M and the resistor 39 are also inserted in the upper end portion of the protector 10 with the sensor. It was necessary to firmly fix the surface of 26 with an adhesive and position it.
For this reason, there has been a problem that a new bonding process is required and that the use of an adhesive increases the cause of bonding failure. Further, the use of the adhesive is likely to vary, and it is difficult to fix the connection part M and the resistor 39 in a stable state. Further, the fixing with an adhesive has a problem that once it is attached, it cannot be easily removed at the time of repair or replacement.
In addition, when variations occur in the connection work between the two core wires 31 and 32 and the lead wire 36 or the connection work between the two core wires 31 and 32 and the resistor 39, the lead wire 36 and the resistor There is also a problem that 39 feet jump out of the surface of the terminal portion.

On the other hand, Patent Document 1 describes that an end cap is inserted so that the resin does not enter the hollow part when the terminal part is molded, and no particular adhesive is used. In this case, there is no description about fixing the connecting portion.
In addition, Patent Document 2 describes using a metal piece that can be caulked and fixed to the connection portion of the cord, but it is troublesome because it is fixed by welding, and the structure is complicated. It does not describe the point of preventing the molding material from flowing into the hollow part during molding.

  Therefore, an object of the present invention is to provide a protector with a sensor that can easily fix a connection portion to an insert for preventing a molding material from flowing in without relying only on an adhesive.

In order to achieve the above object, the sensor-equipped protector according to the present invention includes a peripheral edge of an opening / closing object that opens and closes an opening of a vehicle body, such as an automobile door (1) and a sunroof (2), and the opening of the opening. An attachment base (11) attached to the periphery, and a hollow part (12) formed integrally with the attachment base (11) and provided with two core wires (31, 32) via a space (33) When the hollow portion (12) is pressed and crushed by a foreign matter sandwiched between the opening and closing portion and the opening when the opening and closing member is closed, the presence of the foreign matter is detected by a change in the corresponding electrical signal. In the terminal portion, the core wires (31, 32) drawn in the longitudinal direction are connected to the control device (40) or lead wires (36, 39a, 39b) connected to the electrical components, and Space (33 So as to close the, a sensor with protectors one end of the insert which are formed by non-conductive material (50) is formed by molding in a state of being press-fitted (10),
The wired connection part (M) is a thick line joined in a state in which the tip of the core wire (31, 32) and the tip of the lead wire (36, 39a, 39b) are overlapped,
The insert (50, 60) is made of a flexible material, and the other end is covered with left and right lip portions (53, 54, 63, 64) that are curved inward from both sides. The concave portion (55, 65) is formed, and the connection portion (M) is fixed to the concave portion (55, 65).
Here, the “change in electrical signal” includes a change due to a short circuit between two core wires and a change in capacitance.

  Further, the present invention is characterized in that the lead wires (39a, 39b) are feet of resistors (39).

  Further, the present invention is characterized in that the material of the insert (50, 60) and the material of the molding material are compatible materials.

  The present invention is characterized in that both the material of the insert (50, 60) and the material of the molding material are soft thermoplastic elastomers (TPE materials).

  Note that symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and modes for carrying out the invention described later.

According to the protector with a sensor of the present invention, when the terminal portion is molded, a hollow is formed in a recess formed by an insert made of a flexible material and a non-conductive material, the opening being covered with left and right lip portions. Two lead wires provided on the part side and lead wires connected to the control device (which may be the legs of resistors and diodes which are electrical components) are overlapped and thickly connected to the lip portion. For example, the adhesive portion is used as shown in the conventional example because the connecting portion is fixed by pressing the connecting portion into the recess by elastically contacting the connecting portion with the side wall of the lip or recess, for example. The molding can be performed in a state where the position of the connection portion is maintained without any problem.
As a result, it is easily prevented that the connection part is exposed from the injection molding pressure or the wire is damaged at the time of molding, even if there is some variation in the connection work. There is no particular harm to the appearance.
Further, by not using an adhesive, an extra step is not required and there is no adhesion failure, and it can be easily removed after repair or replacement even after it is once attached.
Furthermore, since the connecting portion can be accommodated in the recess only by being pushed in between the left and right lip portions covering the opening of the recess, the assembling work is very easy.

  In addition, according to the present invention, since the material of the insert and the material of the molding material are both compatible materials such as soft thermoplastic elastomer (TPE material), there is a sense of unity with the molding part. The handling of the protector body with sensor can be facilitated.

It is a perspective view which shows the principal part of the protector with protector upper side terminal part which concerns on embodiment of this invention. FIG. 3 is an enlarged cross-sectional view taken along the line CC in FIG. 1. It is an expanded sectional view which shows a mode that the connection part shown in FIG. 2 is pushed in into a recessed part. It is a perspective view which shows the state before insert is press-fit in the protector-equipped protector upper side terminal part shown in FIG. It is a perspective view which shows the principal part of the protector-equipped lower terminal part which concerns on embodiment of this invention. FIG. 6 is an enlarged sectional view taken along line D-D in FIG. 5. It is a side view of the motor vehicle opened and closed by a sliding door. It is a perspective view of the motor vehicle provided with the sunroof. It is a side view which shows the protector with a sensor shown in FIG. It is an AA line expanded sectional view of FIG. It is the BB line expanded sectional view of FIG. It is a perspective view which shows the process before mold forming of the lower terminal part of a protector with a sensor which concerns on a prior art example in order. It is a perspective view which shows the structure outline | summary after the shaping | molding of the lower terminal part of the protector with a sensor which concerns on a prior art example. It is a perspective view which shows the structure outline | summary after the shaping | molding of the protector-equipped protector upper side terminal part which concerns on a prior art example.

With reference to FIG. 1 thru | or FIG. 4 and FIG. 7 thru | or FIG. 11, the protector with a sensor which concerns on embodiment of this invention is demonstrated.
The sensor-equipped protector 10 according to the embodiment of the present invention protrudes toward the front side of the vehicle body on the front end surface of the slide door 1 in an automobile that opens and closes the opening of the vehicle body by the slide door 1 as shown in FIG. When a foreign object such as a part of the human body (finger or limb) is caught between the sliding door 1 and the body side opening (which may be a front door (side door)) A sensor (pressure sensor) S for outputting a corresponding electric signal is attached, and the parts shown in FIGS. 9 to 11 have the same configuration as that shown in the conventional example, A lead that is different from the insert 25 shown in the conventional example and connected to the control device 40 that determines the presence of foreign matter from the core wires (electrode wires) 31 and 32 and changes in the electrical signal. Connection portions M between 36 or resistor 39 feet 39a,, structure for fixing the connection portion M between 39b is one that differs. The same parts as those in the conventional example are denoted by the same reference numerals.

The sensor-equipped protector 10 is directly attached to a flange (not shown) formed on the slide door 21 and is integrally formed with the attachment base 11. The front end surface of the slide door 1 is closed when the slide door 1 is closed. If there is a foreign object such as a finger between the front end face and the body side opening, the hollow part 12 elastically contacts the foreign object, and the corresponding foreign signal is detected by detecting the foreign object incorporated in the hollow part 12 The sensor (pressure sensor) S includes two core wires (electrode wires (including twisted wires)) 31 and 32 extending in the vertical direction (longitudinal direction). It is fixed in the hollow portion 12 so as to be embedded in conductive rubber-like elastic bodies 34 and 35 provided through 33.
And in the upper terminal part of the protector 10 with a sensor, as shown in FIG. 1, the space part 33 of the hollow part 12 opened in the upper terminal part by the insert 50 is closed.

The insert 50 is, for example, flexible such as polypropylene, polyethylene, polyethylene terephthalate, nylon, 6 nylon, 6-6 nylon, various thermoplastic elastomers (TPE), TPE, styrene-based TPS, and TPE. It is made of a non-conductive material, and includes a plate-like insertion portion 51 provided on one end side and a projecting portion 52 having a substantially elliptical cross section provided on the other end side. Although not particularly limited here, the lengths of the insertion portion 51 and the protruding portion 52 in the longitudinal direction are substantially the same.
The insertion part 51 closes the space part 33 without a gap with a cross-sectional shape substantially the same as or slightly larger than the space part 33 so as to be press-fitted into the space part 33 of the hollow part 12, so that the molding material can be used during subsequent molding. This prevents the sensor function from flowing into the space 33.

2 and 3, the protrusion 52 has a substantially C-shaped recess 55 in which the opening is covered by left and right lip portions 53 and 54 that are curved inward from both sides, respectively. Two are formed. As shown in FIG. 4, the two concave portions 55 are formed by the core wires 31 and 32 drawn out from the hollow portion 12 to the lower side in the longitudinal direction when the insertion portion 51 of the insert 50 is press-fitted into the intermediate portion 33 of the hollow portion 12. And legs 39a and 39b, which are lead wires of the resistor 39, are arranged at positions corresponding to the connection portion M where the wires 39 are connected. Here, as shown in FIG. 2, two concave portions 55 are arranged at a substantially right angle (approximately 90 degrees).
The tips of the core wires 31 and 32 and the tips of the legs 39a and 39b of the resistor 39 are joined together by resistance welding or soldering in a superposed state, and are made thick as shown in FIG.

Then, the thickly overlapped connection portion M is pushed into the recess 55 from between the lip portions 53 and 54, and the ends of the lip portions 53 and 54 are elastically contacted with the connection portion M so that the connection portion M is placed in the recess 55. It is supposed to hold down.
At this time, as shown in FIG. 3, the length T between the tip inner surfaces of the lip portions 53 and 54 and the bottom surface of the recess 55 in the cross-sectional shape is pushed in the cross-sectional shape of the connection portion M to be pressed into the recess 55. The connecting portion M is elastically stressed in the recess 55 and is firmly held by being slightly shorter than the length L. Further, the width P of the connecting portion M is made larger than the interval Q between the tips of the left and right lip portions 53 and 54. Alternatively, at least a part of the connection part M is pressed against and fixed to the inner wall of the recess 55 such that the width P of the connection part M is larger than the width H of the recess 55. Therefore, in FIG. 3, the foot 39a of the resistor 39 and the core wire 31 are overlapped vertically, but it is not necessary to overlap vertically.

  Further, a fitting portion 50a is provided on the surface of the projecting portion 52 to place and stably hold the main body portion of the resistor 39.

  Thereafter, the upper end portion of the protector 10 with the sensor is molded, and the connection portion M, the insert 50 and the resistor 39 are buried in the molding so as not to be exposed (instead of the insert 25 shown in FIG. The insert 50 in which the concave portion 55 for holding or holding the portion M is formed is used).

  Both the material of the insert 50 and the material of the molding material can have similar hardness. According to this, a sense of unity can be formed between the insert 50 and the molded part, and handling of the protector with sensor 10 can be facilitated. The hardness is preferably in the range of soft JISA 20 to 90, more preferably JISA 40 to 90. If it is less than JISA 40, there is anxiety in the function of the molded part (for example, assembling to the vehicle body), and if it is less than JISA 20, the function becomes insufficient. Further, in order to prevent water from entering the internal electrical components and wiring from the outside, the insert 50 may be wrapped with another resin material (for example, an adhesive). Or softer than this (low hardness), the above-mentioned sense of unity is not hindered.

  Also, the material of the insert 50 and the material of the molding material can be made compatible materials. Also in this case, the insert 50 and the molded part can be integrated, and the protector with sensor 10 can be easily handled. Furthermore, even if it is necessary to wrap the insert 50 with a different resin material (adhesive) for the purpose of further preventing water intrusion, if the material of the insert 50 and the material of the molding material are compatible, It is easy to select an adhesive that adheres well to both. In addition, if the two materials are of the same quality so as to be fused, the insert 50 can be brought into close contact with the mold without using an adhesive or the like. Can be prevented from entering. In addition, in the narrow sense, having compatibility means that they are of the same quality to the extent that they are fused. For example, when one material is TPO, polypropylene, polyethylene, TPO, or olefin resin Any TPE containing N may be used. Examples of various TPEs containing olefin resins include styrene thermoplastic elastomers (TPS). When one of the materials is TPS, if the olefin resin is contained therein, the same material as that for the above-mentioned TPO is compatible and can be selected as the same quality to the extent that it is particularly fused.

According to the protector with a sensor 10 as described above, when the terminal portion is molded, the concave portion formed by the left and right lip portions 53 and 54 formed in the insert 50 made of a flexible and non-conductive material. 55, the connecting portion M in which the two core wires 31 and 32 provided on the hollow portion 12 side and the legs 39a and 39b of the resistor 39 connected to the control device 40 via the lead wire 36 are overlapped and connected thickly. Is inserted from between the lip portions 53 and 54, and the side wall of the recess 55 including the lip portions 53 and 54 is elastically contacted with the connection portion M so that the connection portion M is pressed into the recess portion 55. As described above, the molding can be performed in a state where the position of the connection portion M is maintained without using any adhesive. And since the site | part made into the thick line is pressed down in the recessed part 55 especially by overlapping and connecting, the connection part M is hold | maintained firmly and stably.
As a result, it is easily prevented that the connection part M is exposed from the molding part due to the influence of the injection molding pressure at the time of molding, and even if there is some variation in the connection work, the appearance is particularly good. There is no harm.

Further, by not using an adhesive, an extra step is not required and there is no adhesion failure, and it can be easily removed after repair or replacement even after it is once attached.
Furthermore, the connection part M is pushed in from between the left and right lip parts 53 and 54 covering the opening of the recess 55, or a part other than the connection part M is first inserted between the left and right lip parts 53 and 54 to connect the connection part M. May be guided to the recess 55, and the assembly operation is extremely easy because it can be accommodated in the recess 55 only by such an operation.

  In the present embodiment, no adhesive is used for the insert 50, but the connecting portion M can be firmly fixed by pouring the adhesive only into the recess 55.

  Further, as shown in FIGS. 5 and 6, from both sides, the protruding portion 62 of the insert 60 press-fits and closes the insertion portion 61 into the space portion 33 of the hollow portion 12 opened at the lower end portion of the protector with sensor 10. It is also possible to form two recesses 65 having a substantially C-shaped cross-section in which the openings are covered by left and right lip portions 63 and 64 that are curved inwardly, and to push the connecting portion M into the recesses 65. it can.

  The connection part M at this time is connected by resistance welding or soldering by superimposing the core wires 31 and 32 drawn out from the hollow part 12 in the longitudinal direction and the bare wire at the tip of the lead wire 36 connected to the control device 40. It is pushed into the recess 65 from between the lip parts 63, 64, and the connection part M is inserted into the recess 65 by elastically contacting the connection part M with the side wall of the recess 65 including the tips of the lip parts 63, 64. It is supposed to hold down.

In the embodiment of the present invention, in the automobile in which the slide door 1 moves in the front-rear direction, the example in which the protector with sensor 10 is attached to the slide door 1 side is described as an example. 10 may be attached to detect foreign matter between the sliding door 1 and the sliding door 1.
Moreover, the protector 10 with a sensor can also be applied to a back door or the sunroof 2 (FIG. 8).

DESCRIPTION OF SYMBOLS 1 Slide door 2 Sunroof 10 Protector with sensor 11 Mounting base part 11a Car interior side wall 11b Car outer wall 11c Connection wall 12 Hollow part 13 Channel part 14 Holding lip 15 Core material 16 Decoration lip 20 Sensored protector 25 Insert 31, 32 Core 33 Space Part 34, 35 Rubber-like elastic body 36 Lead wire 37 Cover part 39 Resistor 39a, 39b Resistor foot 40 Control device 50 Insert 50a Fitting part 51 Insertion part 52 Projection part 53, 54 Lip part 55 Concave part 60 Insert 61 Insertion Part 62 Projection part 63, 64 Lip part 65 Concave part M Connection part S Sensor (pressure sensor)
W wire harness

Claims (4)

A peripheral part of an opening / closing object that opens and closes an opening of a vehicle body, such as an automobile door or a sunroof, an attachment base attached to the periphery of the opening, and an integral molding of the attachment base, and two core wires are space parts If the hollow portion is pressed and crushed by a foreign object sandwiched between the opening and closing object and the opening when the opening and closing object is closed, the corresponding electrical signal changes. In the terminal portion, the core wire drawn in the longitudinal direction is connected to a lead wire connected to a control device or an electrical component, and a non-conductive material is used so as to close the space. A protector with a sensor which is molded in a state where one end side of the formed insert is press-fitted,
The wired connection part is a thick line coupled in a state where the tip of the core wire and the tip of the lead wire are overlapped,
The insert is made of a flexible material, and on the other end side, a recess is formed in which the opening is covered with left and right lip portions curved inward from both sides, and the connection portion is formed in the recess. A protector with a sensor characterized by being fixed.   The protector with a sensor according to claim 1, wherein the lead wire is a foot of a resistor.   The protector with a sensor according to claim 1 or 2, wherein the material of the insert and the material of the molding material are compatible materials.   The protector with a sensor according to any one of claims 1 to 3, wherein both the material of the insert and the material of the molding material are soft thermoplastic elastomers (TPE materials).