Guard with sensor

Abstract

The present application provides a sensor-equipped protector that is stably injection molded and has improved waterproof performance. One end side of an insert (80) formed of a non-conductive material is pressed into a space portion (33) that blocks a hollow portion (12) of a sensor-equipped protector (70) installed on a sliding door (1) and injection molded in this state. On the insert (80), molding material flow inlets (85, 86) that allow injection molding material to flow into the interior of the insert (80) during injection molding are provided at at least two positions at intervals along the direction in which a wire harness (W) extends, and, at positions opposite the molding material flow inlets (85, 86), a covering portion (37) is exposed from the wire harness (W), respectively.

Description

Technical Field

[0001] The present invention relates to a protective device with a sensor. The protective device with a sensor is equipped with a sensor that outputs a corresponding signal to detect the presence of a foreign object, such as a finger, when a foreign object is caught between the opening and closing part of an opening of a vehicle body, such as a sliding door or tailgate that moves back and forth along the body of a car, such as a station wagon or a van. Background Technology

[0002] In such Figure 10 The car shown is an example of a station wagon or similar vehicle that uses a sliding door 1 (or a tailgate) to open and close the opening of the vehicle body. Figure 11 In the car shown, which uses a sunroof 2 to open and close the opening of the vehicle body, protective devices 10 and 20 with sensors are installed.

[0003] For example, a protective device 10 with a sensor is installed on the front end of the sliding door 1. This protective device 10 protrudes towards the front of the vehicle body, and as... Figure 12 It extends vertically as shown.

[0004] Protective device 10 with sensors, such as Figure 13 as well as Figure 14 As shown, the sliding door 1 has a mounting base 11 with a generally U-shaped cross-section, which is mounted on the front end surface of the sliding door 1 and includes an inner side wall 11a, an outer side wall 11b, and a connecting wall 11c. A hollow portion 12 is integrally formed with the mounting base 11. A sensor (pressure sensor) S is installed in the hollow portion 12. The sensor (pressure sensor) S detects the insertion of a foreign object, such as a part of a human body (finger or foot), between the sliding door 1 and the side opening of the vehicle body (or the front door (side door)) and outputs a corresponding electronic signal (for example, see Patent Document 1).

[0005] Furthermore, at the lower part of the protective device 10 with the sensor, a guide portion 13 with a C-shaped cross-section is integrally formed on the inner side wall 11a side of the mounting base 11, holding the wiring harness W connected to the pressure sensor S. Additionally, multiple retaining lips 14 are provided on the inner side of the mounting base 11, and a core material 15 with a roughly U-shaped cross-section is embedded in the mounting base 11 to improve rigidity. A sealing lip 16 is further provided on the outer side wall 11b of the mounting base 11.

[0006] The sensor (pressure sensor) S is two core wires (electrode wires) 31, 32 extending in the up-down direction (lengthwise direction) which are embedded in conductive rubber-like elastic bodies 34, 35 provided across the space portion 33, and fixed in the hollow portion 12, and when a foreign object is sandwiched between the sliding door 1 and the vehicle body side opening portion when the sliding door 1 is closed, the hollow portion 12 is pressed and flattened in part, and the rubber-like elastic bodies 34, 35 come into contact with each other to cause the two core wires 31, 32 to short circuit. The change in this electronic signal is transmitted to the control device 40 connected to the lead wire 36 connected to the two core wires 31, 32 at the lower end portion of the sensor-equipped guard 10, thereby detecting the presence of a foreign object. In addition, the lead wire 36 is covered with an insulator and wrapped with the wire harness W, but the front end is exposed as a bare wire from the covered portion 37.

[0007] At the lower end portion of the sensor-equipped guard 10, as shown in Figure 15 , the lead wire 36 is made to coincide with the two core wires 31, 32 drawn out in the lengthwise direction (leftward in Figure 15 ), and connected by resistance welding or soldering (b in Figure 15 ), and at the end portion, since the space portion 33 is exposed, after being plugged with the insert 25 (c in Figure 15 ), as shown in Figure 16 , by performing injection molding, the wiring portion Ml, the insert 25, and a portion of the wire harness W are embedded inside the injection molding and not exposed. The reason for plugging the space portion 33 with the insert 25 is to prevent the injection molding material from flowing into the space portion 33 at the time of injection molding and damaging the sensor function. In addition, the portion of the injection molding is indicated by a broken line in Figure 16 .

[0008] However, the wiring portion Ml is affected by the injection molding pressure when embedded inside the injection molding, and therefore in order not to be exposed from the injection molding portion, or in order not to be damaged, the wiring portion Ml and the lead wire 36 need to be firmly fixed and positioned on the surface of the insert 25 at the lower end portion of the sensor-equipped guard 10 using an adhesive.

[0009] Therefore, a new adhesive process is required, and there is a problem that when too much adhesive is used, it becomes a cause of poor adhesion. In addition, the use of adhesive is prone to unevenness, and it is difficult to fix the wiring portion M in a stable state. Furthermore, in the case of fixing using an adhesive, there is a problem that once installed, it cannot be easily removed at the time of repair or replacement, etc.

[0010] In addition, in a case where the connection of the two core wires 31, 32 and the wire 36 is deviated, there is a problem that the foot of the wire 36 protrudes from the surface of the terminal portion.

[0011] On the other hand, the patent document 1 describes a metal sheet that fixes the connection portion of the flexible wire by riveting. However, since the fixing is performed by welding, it is time-consuming and laborious, and the structure is complicated. In addition, there is no description about preventing the injection molding material from flowing into the hollow portion when the insert is included and injection molding is performed.

[0012] In contrast, the following content is disclosed: as shown in a sensor-equipped protective device 10, the insertion portion 51 provided at one end side of the insert 50 is pressed into the space portion 33 to block the space portion 33, and in this state, injection molding is performed, and the overlapping portion M2 of the front ends of the core wires 31, 32 and the wire 36 is clamped by the support 52A provided at the other end side of the insert 50 and the cover 52B that covers the support 52A, and the fixing is performed while the pressing portion 54 partially abuts (see patent document 2). Figure 17

[0013] At the lower terminal portion of the sensor-equipped protective device 10, finally, the support 52A and the cover 52B provided at the other end side of the insert 50, the covered portion 37 of the wire 36, and a part of the wire harness W are buried in the inside of the injection molding and are not exposed.

[0014] Thus, the insertion portion 51 of the insert 50 prevents the injection molding material from flowing to the space portion 33 side of the hollow portion 12, and the support 52A of the insert 50 and the cover 52B that covers the support 52A electrically connect the front ends of the core wires 31, 32 and the wire 36 even if they are not directly connected, and thus an adhesive is not used, and in addition, the connection by resistance welding or soldering is not required.

[0015] However, in a case where the front end of the core wire 31, 32 and the front end of the wire 36 overlap each other at the portion M2 and are affected by the injection molding pressure when injection molding is performed, the front end of the core wire 31, 32 and the front end of the wire 36 are exposed from the injection molding portion or the wire is broken.

[0016] However, as shown in the sensor-equipped protective device 10, there is a problem that gas propagates along the covered portion 37 of the wire 36 and the wire harness W when the lower terminal portion is injection molded. Figure 17

[0017] When gas remains in the injection molding portion, the close adhesion of the injection molding material is deteriorated, and the waterproof performance is also deteriorated.

[0018] ​​In order to block such a gas, it is possible to consider, for example, as described in Patent Literature 3, to perform overmolding by applying a primary seal layer and a secondary seal layer, but this requires production costs.

[0019] Prior Art Documents

[0020] Patent Literature

[0021] Patent Literature 1: JP Patent No. 3291233

[0022] Patent Literature 2: JP Patent Application Laid-Open No. 2015-20548

[0023] Patent Literature 3: JP Patent No. 6258735 SUMMARY

[0024] The present application has an object to provide a sensor-equipped guard capable of stable overmolding and improved waterproof performance.

[0025] To achieve the above object, a sensor-equipped guard (70) of the present application has: a mounting base (11) mounted on a periphery of an opening portion of an opening and closing body or on a periphery of an opening portion; a hollow portion (12) integrally molded with the mounting base (11) and provided with two core wires (31, 32) across a space portion (33); when the hollow portion (12) is crushed by being pressed by a foreign object sandwiched between the opening and closing body and the opening portion when the opening and closing body is closed, the presence of the foreign object is detected by a change in an electronic signal corresponding thereto, the core wires (31, 32) drawn out in a length direction at a terminal portion are electrically connected to lead wires (36, 36) protruding from a covering portion (37) covered with a wire harness (W), and one end side of an insert (80) formed of a non-conductive material is pressed into the space portion (33) in a manner of blocking the space portion (33), and overmolding is performed in this state, characterized in that:

[0026] On the insert (80), molding material flow inlets (85, 86) through which a molding material can flow into the inside of the insert (80) at the time of overmolding are provided at at least two positions spaced apart in a direction in which the wire harness (W) extends, and the covering portion (37) is exposed from the wire harness (W) at positions opposite to the molding material flow inlets (85, 86), respectively.

[0027] Further, in this case, the change in the electronic signal includes a change caused by short-circuiting of the two core wires and a change in capacitance.

[0028] Further, the present application is characterized in that, at the other end portion of the insert (80), a support body (82A) in which a small groove portion (83) that houses the front ends of the core wires (31, 32) and the front ends of the lead wires (36, 36) is formed, a cover body (82B) that covers the support body (82A), and

[0029] In the support body (82A) and the cover body (82B), a large groove portion (84) that houses the covered portions (37) and the wire harness (W) is formed in communication with the small groove portion (83).

[0030] Further, the present application is characterized in that a pressing portion (87, 88) that protrudes toward the inside of the large groove portion (84) to hold the wire harness (W) housed in the large groove portion (84) is provided.

[0031] Further, the present application is characterized in that the pressing portion (87, 88) is provided at at least two positions in the large groove portion (84), including a first pressing portion (87) at a position near the side of the small groove portion (83) and a second pressing portion (88) at a position on the side opposite to the side of the small groove portion (83) and away from the first pressing portion.

[0032] Further, the present application is characterized in that the small groove portion (83) and the side of the small groove portion (83) of the large groove portion (84) are formed in a straight line shape, and the side of the large groove portion (84) opposite to the small groove portion (83) is curved to be formed in a curved line shape, and the wire harness (W) is housed in the large groove portion (84) in a state of being turned back in a U shape.

[0033] Further, the present application is characterized in that the support body (82A) and the cover body (82B) are composed of a material that can be bonded with the injection molding material.

[0034] Further, the "bonding" here also includes "welding" and "fusion".

[0035] Further, the reference numerals in parentheses indicate corresponding elements or corresponding matters described in the drawings and the detailed description to be described later.

[0036] According to the present application, since the molding material flow inlet through which the injection molding material can flow into the inside of the insert is provided at at least two positions on the insert at the time of injection molding, when the terminal portion of the protection device with the sensor is injection molded, the space (X) between the insert and the wire harness is filled with the injection molding material that has flowed into the inside of the insert from the molding material flow inlet, and the case where gas remains in the space (X) is suppressed.

[0037] On this basis, since two or more molding material flow inlets are arranged at intervals along the direction in which the wire harness extends, and at positions opposite the molding material flow inlets, the covered portions are exposed from the wire harness, respectively, and thus the space (Y) between the wire harness and the covered portions is also filled with the injection-molded material, and the case in which gas remains in the space (Y) is also suppressed.

[0038] As a result, the case in which gas remains in the injection-molded portion is significantly improved, and thus the problem in which the waterproof performance deteriorates due to the close adhesion of the injection-molded material being weakened by gas remaining is greatly eliminated.

[0039] In addition, according to the present application, since the other end portion of the insert has: a support body in which a small groove portion that accommodates the front end of the core wire and the front end of the lead wire is formed; a cover body that covers the support body; and a large groove portion that accommodates the covered portion and the wire harness is formed in communication with the small groove portion in the support body and the cover body, the respective end portions of the core wire, the lead wire, the covered portion, and the wire harness are not exposed to the outside in the interior of the insert and are accommodated in a bundle shape in a stable state. Thus, the assembly property is improved.

[0040] In addition, the case in which the wire harness is pushed inside the insert during injection molding can also be suppressed.

[0041] In addition, according to the present application, since the pressing portion that protrudes toward the inside of the large groove portion and holds the wire harness accommodated in the large groove portion is provided, the wire harness can be fixed in a more stable state in the insert.

[0042] This is particularly effective when the wire harness is partially pressed by the first pressing portion and the second pressing portion at a position near the small groove portion side and a position on the side opposite the small groove portion side.

[0043] In addition, according to the present application, since the small groove portion side of the small groove portion and the large groove portion is formed in a straight line shape, and the side opposite the small groove portion side of the large groove portion is curved and formed in a curved line shape, the wire harness is accommodated in the large groove portion in a U-turn state, and thus the adhesion area of the injection-molded material to the insert can be set to be long, and the operability of the wire harness and the lead wire before injection molding is improved, and the connection portion is difficult to break.

[0044] In addition, according to the present application, since the support body and the cover body are composed of a material that can be adhered to the injection-molded material, the insert and the injection-molded material can be integrated by adhesion, and the use of the protection device with a sensor can be facilitated, and the waterproof performance can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is a perspective view showing the main part of the lower end portion of the protection device with a sensor according to the embodiment of the present application.

[0046] Figure 2 is a perspective view showing Figure 1 an insert of the sensor-equipped protective device shown in

[0047] Figure 3 is a perspective view showing Figure 1 a state in which the insert of the sensor-equipped protective device shown in

[0048] Figure 4 is a perspective view showing Figure 3 a state in which the insert of the sensor-equipped protective device shown in Figure 1

[0049] Figure 5 is a perspective view showing Figure 4 a state in which the insert of the sensor-equipped protective device shown in

[0050] Figure 6 is a C-C enlarged sectional view of Figure 4

[0051] Figure 7 is a D-D enlarged sectional view of Figure 4

[0052] Figure 8 is a longitudinal sectional view schematically showing Figure 1 the main part of the sensor-equipped protective device shown in Figure 4

[0053] Figure 9 is a perspective view showing a state in which an insert of another sensor-equipped protective device according to an embodiment of the present application is assembled to a wire harness.

[0054] Figure 10 is a side view of an automobile whose door is opened and closed by a slide door.

[0055] Figure 11 is a perspective view of an automobile provided with a sunroof.

[0056] Figure 12 is a side view showing Figure 10 the sensor-equipped protective device shown in

[0057] Figure 13 is an A-A enlarged sectional view of Figure 12

[0058] Figure 14 is a B-B enlarged sectional view of Figure 12

[0059] Figure 15 ​​​​​​is a perspective view sequentially showing a process before injection molding of a lower end portion of a sensor-equipped guard of the prior example.

[0060] Figure 16 is a perspective view showing a configuration outline of the lower end portion of the sensor-equipped guard of the prior example after injection molding.

[0061] Figure 17 is a perspective view showing a configuration outline of another sensor-equipped guard of the prior example after injection molding.

[0062] Explanation of Reference Numerals

[0063] 1 sliding door

[0064] 2 sunroof

[0065] 10 sensor-equipped guard

[0066] 11 mounting base

[0067] 11a inner side wall

[0068] 11b outer side wall

[0069] 11c connecting wall

[0070] 12 hollow portion

[0071] 13 guide portion

[0072] 14 holding lip

[0073] 15 core material

[0074] 16 sealing lip

[0075] 20 sensor-equipped guard

[0076] 25 insert

[0077] 31, 32 core wire

[0078] 33 space portion

[0079] 34, 35 electrically conductive rubber-like elastomer

[0080] 36 wire

[0081] 37 covered portion

[0082] 40 control device

[0083] 50 insert

[0084] 51 insertion portion

[0085] 52 protruding portion

[0086] 52A support body

[0087] 52B cover body

[0088] 54 pressing portion

[0089] 70 guard with sensor

[0090] 80 insert

[0091] 81 insertion portion

[0092] 82 protruding portion

[0093] 82A support body

[0094] 82Aa front side of support body

[0095] 82B cover body

[0096] 83 small groove portion

[0097] 83L groove width of small groove portion

[0098] 84 large groove portion

[0099] 84L groove width of large groove portion

[0100] 85 molding material flow inlet

[0101] 86 molding material flow inlet

[0102] 87 first pressing portion

[0103] 87L inner diameter of first pressing portion

[0104] 88 second pressing portion

[0105] 88L inner diameter of second pressing portion

[0106] K injection molding material

[0107] M1 wiring portion

[0108] M2 overlapping portion

[0109] M3 overlapping portion

[0110] S sensor (pressure-sensitive sensor)

[0111] W wire harness

[0112] WL width of large-diameter side of wire harness

[0113] X space between insert and wire harness

[0114] Y space between wire harness and covering portion

[0115] Y1, Y2, Y3 Injection Molding Material Filling Area Detailed Implementation

[0116] The protective device 70 with sensors according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0117] The sensor-equipped protective device 70 of the present invention, in such a way... Figure 10 In a car where a sliding door 1 is used to open and close the vehicle body, as shown, a sensor (pressure sensor) S is installed on the front surface of the sliding door 1, protruding towards the front of the vehicle body. This sensor (pressure sensor) detects when a foreign object (such as a finger or foot) is trapped between the sliding door 1 and the side opening of the vehicle body (or, in the case of a front door / side door), and outputs a corresponding electronic signal. Figure 12 to Figure 14 The portion shown has the same configuration as that shown in the conventional examples, but the configuration of insert 80 differs from that of inserts 25 and 50 shown in the conventional examples. The same reference numerals are used for the portions that are the same as in the conventional examples. Furthermore, here, "change in electronic signal" includes changes caused by a short circuit in the two core wires 31 and 32, and changes in capacitance.

[0118] The protective device 70 with sensors and Figure 13 as well as Figure 14 The structure is the same as shown, including: a mounting base 11, which is directly mounted on the flange (not shown) formed on the sliding door 1; a hollow portion 12, which is integrally formed with the mounting base 11, and elastically contacts a foreign object such as a finger when there is a foreign object between the front end face of the sliding door 1 and the body side opening opposite the front end face when the sliding door 1 is closed; and a sensor (pressure sensor) S, which is assembled into the hollow portion 12 and outputs a corresponding electronic signal when a foreign object is detected. The sensor (pressure sensor) S is configured such that two core wires (electrode wires (including stranded wires)) 31, 32 extending in the vertical direction (length direction) are embedded in conductive rubber-like elastomers 34, 35 provided with a space 33 between them, and are fixed in the hollow portion 12. In addition, a plurality of retaining lips 14, 14 are provided on the inner side of the mounting base 11, and a core material 15 with a roughly U-shaped cross-section is embedded in the mounting base 11 to improve rigidity. Furthermore, a sealing lip 16 is provided on the outer side wall 11b of the vehicle where the mounting base 11 is installed.

[0119] On the lower end portion of the protective device 70 with sensors, such as Figure 1 As shown, the space 33 of the hollow portion 12 with the opening at the lower end is blocked by the insert 80.

[0120] Insert 80Figure 2 As shown, for example, a non-conductive material such as polypropylene, polyethylene, polyethylene terephthalate, nylon, nylon 6, nylon 66 is used, and includes a plate-shaped insertion portion 81 provided on one end side and a protruding portion 82 provided on the other end side.

[0121] The cross-sectional shape of the insertion portion 81 is substantially the same as or slightly larger than that of the space portion 33 so as to be pressed into the space portion 33 of the hollow portion 12, thereby blocking the space portion 33 without a gap, and thus preventing the injection-molded material from flowing into the space portion 33 at the time of subsequent injection molding, which would impair the function of the sensor.

[0122] The cross-sectional shape of the insertion portion 81 is substantially the same as or slightly larger than that of the space portion 33 so as to be pressed into the space portion 33 of the hollow portion 12, thereby blocking the space portion 33 without a gap, and thus preventing the injection-molded material from flowing into the space portion 33 at the time of subsequent injection molding, which would impair the function of the sensor. Figure 4 Figure 5 As shown, for example, a non-conductive material such as polypropylene, polyethylene, polyethylene terephthalate, nylon, nylon 6, nylon 66 is used, and includes a plate-shaped insertion portion 81 provided on one end side and a protruding portion 82 provided on the other end side.

[0123] The protruding portion 82 includes a support body 82A formed with small groove portions 83, 83 that accommodate the front ends of the core wires 31, 32 and the front ends of the lead wires 36, 36 in a superimposed state, and a cover body 82B that covers the support body 82A. The small groove portions 83 are two groove portions provided on the front side 82Aa of the support body 82A, i.e., on the insertion portion 81 side, and extend in the length direction from the boundary between the insertion portion 81 and the protruding portion 82 toward the protruding portion 82.

[0124] The groove width of the small groove portions 83 is, as shown, wider than the diameters of the core wires 31, 32 and the lead wires 36, 36, and in the superimposed state, the two can be easily accommodated in the small groove portions 83 without the need for a special application of force. Figure 7 In addition, as long as the core wires 31, 32 and the lead wires 36, 36 are accommodated in the superimposed state in the small groove portions 83, the configuration can be arbitrary.

[0125] In the structure shown, the front side 82Aa of the support body 82A is formed with two recesses in a substantially H-shaped cross section as the small groove portions 83, and thus the superimposed portions M3 of the core wires 31, 32 and the lead wires 36, 36 accommodated in the small groove portions 83 are exposed and can be visually recognized from the outside, but can also be covered, for example, as shown, so as not to be visually recognized from the outside.

[0126] Figure 7 Figure 17

[0127] As shown, for example, a non-conductive material such as polypropylene, polyethylene, polyethylene terephthalate, nylon, nylon 6, nylon 66 is used, and includes a plate-shaped insertion portion 81 provided on one end side and a protruding portion 82 provided on the other end side. Figure 5 ​​​​As shown, a large groove portion 84 that accommodates the wire harness W and the cover portion 37 is formed in the support body 82A and the lid body 82B in communication with the small groove portion 83.

[0128] The groove width 84L of the large groove portion 84 is wider than the groove width 83L of the small groove portion 83 and the width WL of the wire harness W (on the large diameter side), and the wire harness W can be easily accommodated in the large groove portion 84 without the need to apply a particular force.

[0129] The insert 80 is formed as a substantially J-shaped shape, as shown, and the end portion side of the protruding portion 82 is formed in a curved shape with respect to the linear shape of the insertion portion 81 side. Figure 5

[0130] Thus, the insertion portion 81 and the small groove portion 83 inside the protruding portion 82 and the large groove portion 84 are formed in a linear shape, and the side of the large groove portion 84 opposite the small groove portion 83 is curved to form a curved shape, causing the wire harness W extending downward to perform a U-turn toward the upper side and be accommodated in the large groove portion 84 in this state.

[0131] In addition, two pressing portions 87, 88 that protrude toward the inside of the large groove portion 84 to hold the wire harness W accommodated in the large groove portion 84 are provided.

[0132] The first pressing portion 87 holds the end portion of the wire harness W at a position close to the small groove portion 83 side, and the second pressing portion 88 holds the curved portion of the wire harness W performing a U-turn at a position opposite the small groove portion 83 side and away from the first pressing portion 87.

[0133] The first pressing portion 87 and the second pressing portion 88 protrude in a ring shape toward the inside of the large groove portion 84, and their inner diameters 87L, 88L are smaller than the width WL of the wire harness W, and they are configured to locally and firmly fix the wire harness W.

[0134] The first pressing portion 87 is not particularly limited and is provided in four segments (87a to 87d) separated by intervals in the length direction. The second pressing portion 88 is provided in one segment.

[0135] As shown, a large groove portion 84 that accommodates the wire harness W and the cover portion 37 is formed in the support body 82A and the lid body 82B in communication with the small groove portion 83. Figure 1 Figure 4 As shown, a large groove portion 84 that accommodates the wire harness W and the cover portion 37 is formed in the support body 82A and the lid body 82B in communication with the small groove portion 83.

[0136] ​​The molding material inlets 85 and 86 are spaced apart along the direction of the wire harness W. At the positions opposite to the molding material inlets 85 and 86, the covering portion 37 is exposed from the wire harness W. Between these exposed covering portions 37 (between the covering portion 37 exposed on the side of molding material inlet 85 and the covering portion 37 exposed on the side of molding material inlet 86), the wire harness W is arranged in a state where the covering portion 37 is not exposed.

[0137] In the small groove 83 of the support body 82A of the insert 80, the core wires 31, 32 and the conductors 36, 36 are housed in an overlapping state, and the covering part 37 and the wire harness W are housed in the large groove 84. After the cover body 82B is fixed to the support body 82A in such a way that it covers the support body 82A, as shown. Figure 1 As shown, the insertion portion 81 of the insert 80 blocks the opening by pressing it into the space portion 33 of the hollow portion 12 of the opening at the lower end of the protective device 70 with the sensor.

[0138] Subsequently, the lower terminal portion of the protective device 70 with sensors is injection molded, and the insert 80 is embedded inside the injection mold without being exposed.

[0139] During injection molding, the injection molding material K flows into the interior of the insert 80 from the molding material inlets 85 and 86 provided in the support 82A and cover 82B of the insert 80, such as as... Figure 4 CC section Figure 6 As shown, the space X between the insert 80 and the wire harness W, i.e., the support body 82A and the cover body 82B are integrated, is also filled, and the space Y between the wire harness W and the covered part 37 is also filled, thus preventing residual gas in these spaces X and Y.

[0140] In particular, by setting the molding material inlets 85 and 86, as illustrated in the diagram... Figure 1 Longitudinal sectional view of the main part (with) Figure 4 The EE section is equivalent to the diagram. Figure 8 As shown, the injection molding material K is filled from the injection molding material filling areas Y1, Y2, and Y3 at three locations, so the space Y between the wire harness W and the covered part 37 is effectively filled, and the situation of gas residue is further suppressed.

[0141] This solves the problem that the waterproof performance is also reduced because the tightness of the injection molding material K is weakened due to residual gas in the injection molding part.

[0142] In addition, the situation where rainwater or other water seeps into the hollow part through the air hole, causing the sensor sensitivity to deteriorate, is also suppressed.

[0143] In a CT image obtained by inspecting the insert 80 (after injection molding) of the sensor-equipped protection device 70 of the present embodiment using X-rays, although a gas accumulation was found in the space Y between the wire bundle W and the covering portion 37, the gas accumulation was extremely small, and it was confirmed that the injection-molded material K was highly filled.

[0144] In addition, in the sensor-equipped protection device 70 of the present embodiment shown in FIG. 1, the insert 80 is provided in the space Y between the wire bundle W and the covering portion 37. Figure 12 Figure 12 The extruded cross section is cut transversely at the A-A cross section cutting position, and the wire bundle W is cut transversely at the portion between the injection-molded portion and the control device 40, and is configured as a test body.

[0145] The injection-molded portion of the test body and the wire bundle W exposed from the injection-molded portion are immersed in water up to the end portions thereof, and the portions not immersed in water are observed. Figure 12 The space portion 33 of the extruded cross section end portion shown in FIG. 8 is supplied with pressurized air, and the result of a sealing property test of whether or not air leakage occurs is that there is no air leakage at all.

[0146] Thus, it is confirmed that the size of the gas accumulation is at least smaller than the size of a water molecule.

[0147] In addition, the material of the insert 80 and the material of the injection-molded material K can both be hardnesses having similar flexibility. For example, the material of the insert 80 can be PP (polypropylene), and the material of the injection-molded material K can be TPO (thermoplastic polyolefin elastomer).

[0148] Thus, the insert 80 and the injection-molded material K can obtain a sense of unity by adhesion, and can make the use of the sensor-equipped protection device 70 easy. The hardness is preferably in the range of JIS A 20 to 90, and more preferably in the range of JIS A 40 to 90. If it is less than JIS A 40, the performance of the injection-molded portion (for example, the assembly property to the vehicle body) is unstable, and if it is less than JIS A 20, the performance is insufficient. In addition, in order to prevent water from being immersed from the outside to the internal electronic components or the wiring, there is also a case where the insert 80 is wrapped by a different additional resin material (for example, an adhesive), but as long as the additional resin material is a hardness equivalent to or softer (lower hardness) than the injection-molded material, the sense of unity described above is not hindered.

[0149] ​In addition, the material of the insert 80 and the material of the injection-molded material K can be materials having compatibility. In this case, the insert 80 and the injection-molded portion can be formed in a single body, and the use of the protective device 70 with the sensor can be facilitated. Furthermore, even if the insert 80 needs to be wrapped with a different additional resin material (adhesive) for the purpose of further preventing the intrusion of water, as long as the material of the insert 80 and the material of the injection-molded material have compatibility, an adhesive that bonds the two well can be easily selected. In addition, if the two are melted to the extent of being the same material, the insert 80 can be tightly joined at the time of injection molding even without using an adhesive or the like, and the intrusion of water from the outside into the internal electronic components or wiring can be prevented even without using an adhesive. In addition, the so-called compatibility means that the two are melted to the extent of being the same material in a narrow sense, and for example, in the case where the material of one is TPO, polypropylene, polyethylene, TPO, or various TPEs containing an olefin-based resin can be used. As the various TPEs containing an olefin-based resin, a styrene-based thermoplastic elastomer (TPS) can be used. In addition, in the case where the material of one is TPS, if an olefin-based resin is contained therein, the same material as the TPO described above can be selected as a material having compatibility, particularly, to the extent of being welded or melted.

[0150] In addition, in the present embodiment, the protruding portion 82 of the insert 80 is held in a closed state by the cover 82B being inserted into the support 82A from above and being engaged with each other, but the cover 82B can be attached to the support 82A in a manner that can be opened and closed via a hinge portion or a thin-walled portion (not shown).

[0151] In addition, in the present embodiment, one of the molding material flow inlets 85 and 86 is illustrated, but one or more additional molding material flow inlets (not shown) can be provided in the support 82A or the cover 82B, or both the support 82A and the cover 82B.

[0152] In the present embodiment, as shown in Figs. 1 and 2, the molding material flow inlet 85 is provided between the support 82A and the end portion of the cover 82B that is smaller than the support 82A, and the molding material flow inlet 86 is provided in the central portion of the cover 82B, but as shown in Fig. 3, the molding material flow inlet 85 can also be provided in the cover 82B. In this case, an opening portion is provided in the upper side of the cover 82B fixed to the support 82A, and this is used as the molding material flow inlet 85. Figure 1 Figure 4 As shown in Figs. 1 and 2, the molding material flow inlet 85 is provided between the support 82A and the end portion of the cover 82B that is smaller than the support 82A, and the molding material flow inlet 86 is provided in the central portion of the cover 82B, but as shown in Fig. 3, the molding material flow inlet 85 can also be provided in the cover 82B. In this case, an opening portion is provided in the upper side of the cover 82B fixed to the support 82A, and this is used as the molding material flow inlet 85. Figure 9

[0153] Accordingly, the molding material flow inlets 85 and 86 can be used from four positions, the upper and lower portions of the molding material flow inlet 85 and the upper and lower portions of the molding material flow inlet 86 (in the case of the molding material flow inlet 85 being provided in the cover 82B, the upper and lower portions of the opening portion of the cover 82B). Figure 8 ​​The three position injection molding material filling areas Y1, Y2, Y3 are filled with the injection molding material K.

[0154] In addition, in the embodiment of the present application, the sensor-equipped guard 70 is installed on the side of the sliding door 1 in a vehicle in which the sliding door 1 moves in the front-rear direction, but the sensor-equipped guard 70 can be installed on the side of the opening of the vehicle body to detect foreign matter between the sliding door 1.

[0155] In addition, the sensor-equipped guard 70 can also be applied to a back door or a sunroof 2. Figure 11 )

Claims

1. A guard with a sensor, comprising: a mounting base mounted on a periphery of an opening of an opening and closing body or on a periphery of an opening of an opening and closing body; a hollow portion integrally formed with the mounting base and having two core wires provided therein with a space therebetween; when the hollow portion is crushed by being pressed by a foreign object sandwiched between the opening and closing body and the opening when the opening and closing body is closed, the presence of the foreign object is detected by a change in an electronic signal corresponding thereto, the core wires drawn out in a length direction at a terminal portion are electrically connected to a conductor wire protruding from a covered portion covered by a wire harness, and one end side of an insert formed of a non-conductive material is pressed into the space in a manner of blocking the space and is injection molded in this state, characterized in that: molding material flow inlets through which an injection molding material can flow into an inside of the insert are provided at at least two positions spaced apart in a direction in which the wire harness extends, at the insert, and the covered portion is exposed from the wire harness at positions opposite to the molding material flow inlets, respectively. The other end portion of the insert has: a support body in which a small groove portion in which a front end of the core wire and a front end of the conductor wire are accommodated is formed; a cover body covering the support body; and In the support body and the cover body, a large groove portion in which the covered portion and the wire harness are accommodated is formed in communication with the small groove portion.

2. The shield with sensor of claim 1, wherein, A pressing portion protruding toward an inner side of the large groove portion to hold the wire harness accommodated in the large groove portion is provided. The pressing portion is provided at at least two positions in the large groove portion, including: a first pressing portion at a position close to the small groove portion side; and a second pressing portion at a position away from the first pressing portion on a side opposite to the small groove portion side.

3. The guarded device with a sensor according to claim 2, characterized in that, The small groove portion and the small groove portion side of the large groove portion are formed in a straight line shape, and a side of the large groove portion opposite to the small groove portion is curved to be formed in a curved line shape, and the wire harness is accommodated in the large groove portion in a U-turn state.

4. The guarded device with a sensor according to claim 3, characterized in that, The support body and the cover body are made of a material that can be bonded with the injection molding material.

5. Guard with sensor according to any one of claims 2-4, characterized in that, The support body and the cover body are made of a material that can be bonded with the injection molding material.

6. The guard with sensor according to any one of claims 2 to 4, characterized in that ​ 7. The guarded device with a sensor according to claim 5, characterized in that, ​

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