CN114060514A

CN114060514A - Gasket for vehicle-mounted electrical equipment

Info

Publication number: CN114060514A
Application number: CN202110842446.9A
Authority: CN
Inventors: 永岛佳峰; 永岛悠平; 规矩地和人; 穗积仰太
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2020-07-31
Filing date: 2021-07-26
Publication date: 2022-02-18
Anticipated expiration: 2041-07-26
Also published as: JP7008763B1; JP2022026467A

Abstract

The gasket (1) for an in-vehicle electrical apparatus has a plurality of lips arranged side by side in at least one contact portion between a contact portion of a first sealed member and a contact portion of a second sealed member so as to face each other in a direction orthogonal to a facing direction of the sealed members, wherein inner walls of the lips facing each other are formed with a first linear portion and a second linear portion having different angles, respectively, the first linear portion is formed at a position closer to the sealed member with which the lips are in contact than the second linear portion, and the inner walls of the lips facing each other are formed in a shape in which an angle formed by a contact surface of the sealed member with the lips and the first linear portion is smaller than an angle formed by the contact surface and the second linear portion.

Description

Gasket for vehicle-mounted electrical equipment

Technical Field

The present invention relates to a gasket for an in-vehicle electric apparatus that seals between a first sealed member and a second sealed member that face each other.

Background

Conventionally, as a waterproof sealing member, a gasket made of an elastomer material in which one or more lips are arranged in parallel on a contact surface with a housing as described in patent document 1 is known. Further, patent document 2 describes a gasket which is provided with an auxiliary seal portion and can extend the durability of the sealing function in a salt environment.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2015-081627

Patent document 2: japanese patent No. 6470473

Disclosure of Invention

Technical problem to be solved by the invention

In the gasket for the in-vehicle electric apparatus to be compared with the gasket for the in-vehicle electric apparatus of the present application, as illustrated in fig. 8 in the present application, when the gasket 90 is mounted in a pressed state between the two

members

11, 12 in the case, since the gasket 90 is pressed by the two

members

11, 12, the reaction force applied from the gasket 90 to the two

members

11, 12 of the case is rapidly increased as the compression amount of the gasket 90 is increased, and therefore, the deformation of the two members as the case member is increased, and the sealing property may be lowered. In addition, in the gasket for the vehicle-mounted electrical equipment to be compared, in order to improve the durability of the sealing function in the salt damage environment, when the contact length, which is the length of the portion where the two members as the case member and the gasket are in contact, is increased, the reaction force from the gasket for the vehicle-mounted electrical equipment to be compared is increased, and therefore, it is necessary to increase the rigidity by thickening and enlarging the two members as the case member, and the product cost is increased.

The present disclosure has been made in view of the above circumstances, and an object thereof is to reduce a reaction force applied from a pad for an in-vehicle electrical apparatus to a member to be sealed in a mounted state of the pad for an in-vehicle electrical apparatus, and to increase a contact length of the pad for the in-vehicle electrical apparatus to the member to be sealed.

Means for solving the problems

The gasket for a vehicle-mounted electrical apparatus disclosed in the present application is a gasket for a vehicle-mounted electrical apparatus that seals between a first member to be sealed and a second member to be sealed that face each other, the in-vehicle electric device gasket has a plurality of lips arranged side by side so as to oppose each other in a direction orthogonal to the opposing direction in at least one of a contact portion with the first sealed member and a contact portion with the second sealed member, the mutually opposite inner walls of the lip are respectively formed with a first straight line portion and a second straight line portion having different angles, the first linear portion is formed at a position closer to the member to be sealed with which the lip is in contact with, with respect to the second linear portion, inner walls of the lip facing each other are formed in a shape in which an angle formed by a contact surface of the member to be sealed with the lip and the first straight portion is smaller than an angle formed by the contact surface and the second straight portion.

Effects of the invention

The gasket for an in-vehicle electrical apparatus disclosed in the present application is a gasket for an in-vehicle electrical apparatus that seals between a first sealed member and a second sealed member that face each other, the gasket for an in-vehicle electrical apparatus having a plurality of lips that are provided side by side so as to face each other in a direction orthogonal to the facing direction in at least one of a contact portion with the first sealed member and a contact portion with the second sealed member, inner walls of the lips that face each other are formed with a first linear portion and a second linear portion that are different in angle, respectively, the first linear portion being formed at a position closer to the sealed member with which the lips are in contact than the second linear portion, and the inner walls of the lips that face each other are formed in a shape in which an angle formed by the contact surface of the sealed member with the lips and the first linear portion is smaller than an angle formed by the contact surface with the second linear portion, therefore, in the mounted state of the in-vehicle electrical equipment gasket, the first straight portions of the plurality of lips can be brought into surface contact with the member to be sealed, and the second straight portions of the plurality of lips can be brought out of contact with the member to be sealed. Further, the contact length of the first straight portions of the plurality of lips with the member to be sealed can be secured to be long, and thus the sealing function can be improved.

Drawings

Fig. 1 is a cross-sectional view of a sealing structure for an in-vehicle electrical device using a gasket for an in-vehicle electrical device according to embodiment 1 of the present application.

Fig. 2 is a cross-sectional view for explaining in detail the lip shape of the pad for an in-vehicle electric device according to embodiment 1 of the present application.

Fig. 3 is a graph illustrating a relationship between a compression amount of the in-vehicle electrical device gasket, a reaction force from the in-vehicle electrical device gasket, and a seal length when the in-vehicle electrical device gasket to be compared and the in-vehicle electrical device gasket according to embodiment 1 are compressed.

Fig. 4 is a cross-sectional view illustrating a detailed dimension of the pad for an in-vehicle electric device according to embodiment 1 of the present application.

Fig. 5 is a cross-sectional view of a sealing structure for an in-vehicle electrical device using a gasket for an in-vehicle electrical device according to embodiment 2 of the present application.

Fig. 6 is a cross-sectional view of a sealing structure for an in-vehicle electrical device using a gasket for an in-vehicle electrical device according to embodiment 3 of the present application.

Fig. 7 is a cross-sectional view of a sealing structure for an in-vehicle electrical device using a gasket for an in-vehicle electrical device according to embodiment 4 of the present application.

Fig. 8 is a cross-sectional view of a sealing structure for an in-vehicle electrical device using an example of a gasket for an in-vehicle electrical device to be compared.

Fig. 9 is a cross-sectional view showing an example of a compressed state of the pad for an in-vehicle electric device according to the present application exemplified in embodiment 1.

Fig. 10 is a cross-sectional view showing a compressed state of the pad for the in-vehicle electric device which is a comparison target, and is a diagram for comparison with fig. 9.

Fig. 11 is a perspective view showing an application example of the in-vehicle electrical apparatus gasket of the present application to the case of the vehicle electrical apparatus, and is an assembled view of the case of the vehicle electrical apparatus.

Fig. 12 is a perspective view showing an application example of the in-vehicle electrical apparatus gasket of the present application to the case of the in-vehicle electrical apparatus, and is an exploded view of the case of the in-vehicle electrical apparatus.

Detailed Description

Embodiment 1.

Embodiment 1 of a gasket for an in-vehicle electrical apparatus as a sealing member according to embodiment 1 and a waterproof sealing structure using the gasket for an in-vehicle electrical apparatus as a sealing member will be described with reference to fig. 1 to 4.

Fig. 1 is a cross-sectional view of a sealing structure for an in-vehicle electrical device using a gasket 1 for an in-vehicle electrical device according to the present embodiment, fig. 2 is a cross-sectional view for explaining in detail the lip shape of the gasket 1 for an in-vehicle electrical device according to the present embodiment, and fig. 3 is a graph illustrating a curve showing a relationship between a compression amount of the gasket 1 for an in-vehicle electrical device and a reaction force from the gasket 1 for an in-vehicle electrical device and a contact length of the gasket for an in-vehicle electrical device to a member to be sealed when the gasket 1 for an in-vehicle electrical device to be compared and each of the gaskets 1 for an in-vehicle electrical device according to the present embodiment are compressed.

As shown in fig. 1, the gasket 1 for an in-vehicle electric apparatus according to the present embodiment is a gasket for an in-vehicle electric apparatus that is an elastic single body that seals between two first members to be sealed 11 (hereinafter, simply referred to as "members to be sealed 11") and two second members to be sealed 12 (hereinafter, simply referred to as "members to be sealed 12") of a case that face each other. The in-vehicle electrical equipment gasket 1 has two

lips

2a and 3a in a height direction lower than a contact surface 13a provided on a bottom surface of the groove 13 of one sealed member 11, and has two

lips

2b and 3b in a height direction upper than a contact surface 12a of the other sealed member 12. In addition, the case is described where the sealed member 11 and the sealed member 12 of the case, which are sealed to each other, are both formed of a metal material that is affected by corrosion in a salt environment in embodiment 1.

Next, the lip shape of the pad 1 for an in-vehicle electric device will be described in detail with reference to fig. 2. In fig. 2, 4 is a first straight portion of the inner surface of the lip, 4a is an angle between the first straight portion and the contact surface, 5 is a second straight portion of the inner surface of the lip, and 5a is an angle between the second straight portion and the contact surface.

As shown in fig. 1, the

lips

2a, 2b, 3a, 3b each have two linear portions with different angles on the inner side surface thereof, and have the following shapes: an angle 5a between the second straight portion 5 on the side close to the center portion of the pad for the in-vehicle electrical equipment and the contact surface 13a on the bottom surface of the groove 13 of the sealed member 11 of the case is larger than an angle 4a between the first straight portion 4 on the side close to the contact surface of the sealed

member

11, 12 of the case and the contact surface 13a on the bottom surface of the groove 13 of the sealed member 11 of the case. As shown in the drawing, the first straight portion 4 and the second straight portion 5 of the

lips

2a and 3a that contact the contact surface 13a, which is the bottom surface of the groove 13 of the member to be sealed 11, are adjacent continuous straight lines. Similarly, the first linear portion 4 and the second linear portion 5 of the

lips

2b and 3b that are in contact with the contact surface 12a, which is the lower surface of the sealed member 12, are continuous straight lines adjacent to each other as shown in the drawing.

Next, a relationship between a compression amount, a pad reaction force for the in-vehicle electrical device, and a seal length when compressing the in-vehicle electrical device pad 90 as a comparison target illustrated in fig. 8 and the in-vehicle electrical device pad 1 according to the present application will be described with reference to fig. 3.

In fig. 3, a reaction force a of the pad for the in-vehicle electrical device to be compared, a seal length B of the pad for the in-vehicle electrical device to be compared, a reaction force a of the pad 1 for the in-vehicle electrical device of the present application, and a seal length B of the pad 1 for the in-vehicle electrical device of the present application are illustrated as being comparatively curved, and 20 is a seal length when the entire surface of the first straight portion is in contact with the member to be sealed in the compressed state of the pad for the in-vehicle electrical device of the present application.

As shown in fig. 3, the in-vehicle electric device gasket 1 of the present application shows a small increase in reaction force even when the compression amount is increased, relative to the in-vehicle electric device gasket 90 that is the comparison target.

Further, the seal length (the length of the first linear portion 4 + the length of the first linear portion 4) at the time when the first linear portion 4 and the sealed

members

11, 12 of the case are in contact can be secured to be large (the seal length is larger because the first linear portion 4 is inclined at the angle 4a than in the case where there is no inclination).

In the in-vehicle electrical equipment gasket 90 (see fig. 8), which is an example of the comparative in-vehicle electrical equipment gasket described in the present specification, when a seal length equal to or greater than a seal length (reference numeral 20 in fig. 3) at the time when the first straight portion 4 of the in-vehicle electrical equipment gasket 1 of the present application comes into contact with the sealed

members

11, 12 of the case is ensured, a reaction force from the in-vehicle electrical equipment gasket is increased by 2 times or more (see fig. 3).

As described above, by using the in-vehicle electric device gasket 1 of the present invention, the reaction force at the time of compressing the in-vehicle electric device gasket can be reduced, and therefore, the cost can be reduced by making the members to be sealed 11 and 12 as the case members thin and small.

Further, since the seal length when the gasket for the in-vehicle electric device is compressed can be increased, the durability of the sealing function when the device is used in a salt environment can be improved.

In fig. 1, 4 angles 4a between the first straight line portion 4 of each of the 4

lips

2a, 2b, 3a, 3b and the sealed

portions

11, 12 as the case members are shown as equal angles, but in the present application, the 4 angles 4a do not necessarily have to be equal angles. Similarly, the 4 angles 5a between the second linear portion 5 and the members to be sealed 11 and 12 as the case members do not necessarily have to be equal angles. In any of the 4

lips

2a, 2b, 3a, and 3b, the relationship of 4a < 5a may be satisfied as to the magnitude relationship of the

angles

4a and 5 a. In order to stably improve the durability of the sealing function, the total of the

distances

41 and 42 from the contact surfaces of the members to be sealed 11 and 12 as the case members and the in-vehicle electrical equipment gasket to the inner end portion of the first straight portion 4 in the compression direction of the in-vehicle electrical equipment gasket shown in fig. 4 is set to be smaller than the minimum compression amount in the design of the in-vehicle electrical equipment gasket 1. In fig. 4, 41 is a pad compression direction distance from the pad contact surface 12a of the housing member for the in-vehicle electrical device to the end of the first straight line 4 in the state before compression of the pad for the in-vehicle electrical device, and 42 is a pad compression direction distance from the pad contact surface 13a of the housing member for the in-vehicle electrical device to the end of the first straight line 4 in the state before compression of the pad for the in-vehicle electrical device.

Embodiment 2.

Hereinafter, although embodiment 2 of the present application will be described, descriptions of the same contents as embodiment 1 will be omitted, and the same reference numerals will be given to the same or corresponding parts as embodiment 1.

Hereinafter, a sealing structure for an in-vehicle electric device using the gasket for an in-vehicle electric device according to embodiment 2 will be described with reference to fig. 5. Fig. 5 is a cross-sectional view showing the pad 6 for the in-vehicle electric device according to the present embodiment. In fig. 5, 7 denotes a lip outer side surface, 7a denotes an angle between the lip outer side surface and a contact surface, and 12a denotes a contact surface between the second member to be sealed 12 and the pad for the in-vehicle electrical equipment.

The gasket 6 for an in-vehicle electrical apparatus according to embodiment 2 is characterized in that an angle 7a between the lip outer surface 7 of any of the

lips

2a, 2b, 3a, 3b and the

contact surfaces

12a, 13a of the members to be sealed 11, 12 as the case members is 90 ° or more, which is larger than that of embodiment 1. In the case of compressing the in-vehicle electrical equipment pad 6 shown in the present embodiment, the

lips

2a, 2b, 3a, and 3b are each more likely to fall to the outside than in the case of compressing the in-vehicle electrical equipment pad 1 shown in embodiment 1, and therefore, the reaction force from the in-vehicle electrical equipment pad 6 can be further reduced. Therefore, cost reduction can be achieved by further thinning and downsizing the members to be sealed 11 and 12 as the case members. Further, since the seal length is equal to that of the in-vehicle electrical equipment gasket 1 shown in embodiment 1, the durability of the sealing function when the equipment is used in a salt environment can be similarly improved as compared with the case where the in-vehicle electrical equipment gasket 90 (see fig. 8) to be compared is used.

In fig. 5, 4 angles 7a between the lip outer side surface 7 of each of the 4

lips

2a, 2b, 3a, 3b and the sealed

members

11, 12 as the case members are shown as equal angles, respectively, but in the present application, the 4 angles 4a do not have to be equal angles, and a relationship in which the size of the angle 7a is 7a or more than 90 ° is satisfied in any lip portion.

Embodiment 3.

Hereinafter, although embodiment 3 of the present application will be described, descriptions of the same contents as those of embodiments 1 and 2 will be omitted, and the same reference numerals will be given to the same or corresponding portions as those of embodiment 1.

Hereinafter, a sealing structure for an in-vehicle electric device using the gasket for an in-vehicle electric device according to embodiment 3 will be described with reference to fig. 6. Fig. 6 is a cross-sectional view of a sealing structure for an in-vehicle electric device using the gasket 8 for an in-vehicle electric device according to the present embodiment. In fig. 6, 13 is a pad mounting groove for the in-vehicle electric device provided in the case member, 13a is a contact surface with the in-vehicle electric device pad in the pad mounting groove 13 for the in-vehicle electric device, 12 is a second member to be sealed, and 12a is a contact surface between the second member to be sealed 12 and the in-vehicle electric device pad.

As shown in fig. 6, the in-vehicle electrical equipment gasket 8 according to embodiment 3 is an in-vehicle electrical equipment gasket that seals between two first sealed members 11 (hereinafter, simply referred to as "sealed members 11") and a second sealed member 12 (hereinafter, simply referred to as "sealed members 12") that face each other. The in-vehicle electrical equipment gasket 8 has two

lips

2a and 3a in a height direction lower side that are in contact with a contact surface 13a provided on a bottom surface of the groove 13 of one sealed member 11, and has one single lip 9 in a height direction upper side that is in contact with a planar contact surface 12a of the other sealed member 12. In addition, the sealed

members

11 and 12 as the case members are formed of a material such as a resin material which does not corrode in a salt environment.

If the sealing structure for the in-vehicle electrical equipment shown in fig. 6 is used, the contact surface between the member to be sealed 11 made of a metal material and the in-vehicle electrical equipment gasket 8 is sealed by the

lips

2a and 3a, and therefore, the sealing length is long as in embodiment 1, and the durability of the sealing function in a salt environment can be improved as compared with the gasket 90 for the in-vehicle electrical equipment to be compared (see fig. 8). On the other hand, although the sealing length of the contact portion between the lip 9, which is a single lip, and the sealed member 12 is short, the sealed member 12 is formed of a resin or the like which is less likely to corrode in a salt environment than metal, and therefore corrosion does not occur in a salt environment.

In the in-vehicle electrical equipment gasket 8 of the present embodiment, the one-side lip is a single lip, and therefore, as compared with the case where the in-vehicle electrical equipment gasket 1 of embodiment 1 is used, the reaction force at the time of compressing the in-vehicle electrical equipment gasket can be further reduced, and the costs can be reduced by further thinning and downsizing the members to be sealed 11 and 12 as the case members.

In a salt damage environment, corrosive media such as salt water tend to accumulate in a direction opposite to the ground surface side in the equipment installation state. Therefore, in the installed state of the device, only the seal portion facing the ground surface side is formed as the plurality of lips.

Embodiment 4.

Embodiment 4 exemplifies a sealing structure for an in-vehicle electric device more suitable than embodiment 3. As shown in fig. 7, in the sealing structure for an in-vehicle electric device in which the gasket 30 for an in-vehicle electric device is used to seal between the two members to be sealed 11 and the members to be sealed 12 that face each other, the member to be sealed 11 that faces the top surface side is provided with the mounting groove 13 for mounting the gasket 30 for an in-vehicle electric device in the device mounted state, and the contact surface 12a of the other member to be sealed 12 that faces the ground surface side and the gasket 30 for an in-vehicle electric device in the in-vehicle electric device mounted state is not provided with the groove shape.

The in-vehicle electrical equipment pad 30 is provided such that, in the equipment installation state, the side having the plurality of

lips

2a and 3a is located on the ground surface side and the single lip 9 side is located on the top surface side. Further, fixing projections 31 are provided on both side surfaces of the in-vehicle electrical equipment pad 30 in order to prevent the pad from falling off from the mounting groove 13. The dimension in the width direction between the distal end portions of the pair of fixing

projections

31, 31 provided on both side surfaces of the in-vehicle electrical apparatus gasket 30 is larger than the dimension in the width direction of the mounting groove 13, and the in-vehicle electrical apparatus gasket 30 can be prevented from falling off from the member to be sealed 11 when the member to be sealed 11 is fixed to the member to be sealed 12 after the in-vehicle electrical apparatus gasket 30 is mounted in the mounting groove 13 of the member to be sealed 11.

In addition, in a salt damage environment, corrosive media such as salt water are likely to accumulate in a direction facing the ground surface side in the equipment installation state, but in the structure shown in fig. 7, since the installation groove 13 of the packing 30 is not provided in the sealed member 12 facing the ground surface side, corrosion damage due to accumulation of corrosive media such as salt water in the installation groove 13 can be prevented.

By adopting the configurations of embodiments 1 to 4, the reaction force from the gasket for the in-vehicle electric equipment can be reduced as compared with the comparative structure, and the durability of the sealing function in the salt damage environment can be improved, so that the reduction in thickness and the reduction in size of the member to be sealed as the case member can be realized to achieve the reduction in cost.

Fig. 9 and 10 show a compressed state of the pad for the vehicle electrical equipment to be compared as exemplified in

embodiment

1 and 8. When the contact length 1L (see fig. 9) of the gasket 1 for an in-vehicle electrical apparatus according to the present invention of embodiment 1 to the second member to be sealed 12 is compared with the contact length 90L (see fig. 10) of the gasket 90 for an in-vehicle electrical apparatus to be compared to the second member to be sealed 12, the contact length 1L is longer than the contact length 90L, and the sealing performance can be improved.

Further, if the sectional area of the in-vehicle electrical equipment pad 1 is reduced to make the contact length 1L equal to the contact length 90L, the in-vehicle electrical equipment pad 1 can be reduced in weight, and is useful for an in-vehicle electrical equipment that is further required to be reduced in weight.

Fig. 11 and 12 are perspective views showing an application example of the pad for an in-vehicle electric apparatus of the present invention to a case of the apparatus for a vehicle. Fig. 11 is an assembled view of a housing of the vehicle device, and fig. 12 is an exploded view of the housing of the vehicle device.

As illustrated in fig. 12, the case 100 and the lid 101 are members to be sealed, and the gasket 102 for the in-vehicle electrical equipment, which has an annular planar shape, realizes sealing performance.

That is, the case 100 in fig. 11 and 12 corresponds to the first sealed member 11 in fig. 1, 2, 4, 5, 6, 7, 8, 9, and 10, and the lid 101 in fig. 11 and 12 corresponds to the second sealed member 12 in fig. 1, 2, 4, 5, 6, 7, 8, 9, and 10.

The in-vehicle electric device pads 102 in fig. 11 and 12 correspond to the in-vehicle

electric device pads

1, 6, 8, 30, and 90 in fig. 1, 2, 4, 5, 6, 7, 8, 9, and 10.

The cross sections in fig. 1, 2, 4, 5, 6, 7, 8, 9, and 10 correspond to cross sections obtained by observing cross sections XI-XI in fig. 11 from the direction of the arrows.

In addition, the high-voltage wire harness 103 is joined to the housing 100, and the high-voltage wire harness 103 is used as a power supply line of an in-vehicle electric apparatus (e.g., an inverter or the like) provided in the housing 100.

The above-described embodiments of the present application have the following characteristic matters.

Feature item 1: in a gasket for a vehicle-mounted electrical apparatus, which is made of an elastomer material that is installed between two members and seals between the members, a plurality of lips are provided on either one or both of the lips that come into contact with a case member. The pad for the vehicle-mounted electric device has the following shape: in the two lips located at the outermost portions in the cross-sectional width direction of the in-vehicle electrical equipment pad in the lip portion provided with the plurality of lips, the two or more linear portions having different angles of the inner wall of the lip portion are provided, and the angle of the second linear portion located on the side closer to the center of the in-vehicle electrical equipment pad is larger than the angle of the first linear portion located on the side closer to the case member. When the compression amount exceeds a certain amount, the first straight line portion contacts the case, so that the contact length between the case and the gasket for the in-vehicle electrical equipment can be secured long, and the durability of the sealing function in a salt damage environment can be improved. When the compression amount is further increased, the second straight portion does not contact the case, and therefore, a rapid increase in the pad reaction force for the in-vehicle electrical apparatus can be suppressed.

Feature item 2: in the in-vehicle electric equipment pad according to feature 1, the angle of the outer wall of the specified lip portion of the in-vehicle electric equipment pad is an obtuse angle of 90 ° or more with respect to the surface of the case in contact with the lip portion, and when the in-vehicle electric equipment pad as described above is compressed, since the angle of the outer wall is an obtuse angle with respect to the contact surface, the lip portion is easily deformed so as to fall outward, and a reaction force from the in-vehicle electric equipment pad when the compression amount increases can be suppressed.

Feature item 3: in the gasket for an in-vehicle electrical equipment according to feature 1 or feature 2, in the case where one of the casings of the member to be sealed is made of a resin material and the other casing is made of a metal material, only the seal portion that contacts the casing on the metal material side is formed into a plurality of lips, and the seal portion that contacts the casing on the resin material side is formed into a single lip. Further, the reaction force can be further reduced as compared with the pad for the in-vehicle electric device of feature 1.

Feature item 4: in the in-vehicle electrical equipment gasket of the feature 1 or the feature 2, in a state in which the case of the member to be sealed is installed in the actual equipment, only the sealing portion facing the ground surface side is formed into the plurality of lips, and the sealing portion facing the top surface side is formed into the single lip. Therefore, even when only the sealing portion facing the floor surface side is formed with a plurality of lips in the installed state of the equipment, the durability of the sealing function in the salt damage environment can be improved. Further, the reaction force can be further reduced as compared with the pad for the in-vehicle electric device of feature 1.

Feature item 5: in the gasket for an in-vehicle electrical equipment of any one of the characteristic items 1 to 4, when the gasket for an in-vehicle electrical equipment is used as a waterproof seal for an in-vehicle equipment, the gasket for an in-vehicle electrical equipment is used for an in-vehicle equipment which is inevitably corroded by salt damage in a use environment, so that durability of a sealing function of the in-vehicle equipment can be improved.

Feature item 6: as illustrated in fig. 2, in a gasket for a vehicle electrical apparatus that seals between a first sealed member and a second sealed member that face each other, the in-vehicle electric device gasket has a plurality of lips arranged side by side so as to oppose each other in a direction orthogonal to the opposing direction in at least one of a contact portion with the first sealed member and a contact portion with the second sealed member, the mutually opposite inner walls of the lip are respectively formed with a first straight line portion and a second straight line portion having different angles, the first linear portion is formed at a position closer to the member to be sealed with which the lip is in contact with, with respect to the second linear portion, inner walls of the lip facing each other are formed in a shape in which an angle formed by a contact surface of the member to be sealed with the lip and the first straight portion is smaller than an angle formed by the contact surface and the second straight portion. Further, in the gasket for an in-vehicle electrical apparatus of the above configuration, the second straight portion is located on a center side in a direction orthogonal to the opposing direction of the first member to be sealed and the second member to be sealed with respect to the first straight portion.

In the drawings, the same reference numerals denote the same or corresponding parts.

Although various exemplary embodiments and examples have been described in the present application, the various features, modes, and functions described in 1 or more embodiments are not limited to the application to a specific embodiment, and may be applied to the embodiments alone or in various combinations.

Therefore, countless modifications not shown by way of example can be conceived within the technical scope disclosed in the present application. For example, the present invention includes a case where at least one of the components is modified, added, or omitted, and a case where at least one of the components is extracted and combined with the components of the other embodiments.

Further, the respective embodiments can be appropriately combined, modified, and omitted.

Description of the reference symbols

1. 6, 8, 30, 90, 102 pad for vehicle-mounted electric device

2a, 2b, 3a, 3b lip

4 first straight line in lip inside face

4a angle of the first straight line part and the contact surface

5 second straight line part in inner side surface of lip part

5a angle of the second straight line part with the contact surface

7 outer side of lip

7a angle of outer side surface of lip and contact surface

9 Single lip

11 first sealed member

12 second sealed member

12a contact surface of the second member to be sealed 12 with the pad for the in-vehicle electrical equipment

13 gasket mounting groove for in-vehicle electric device provided in case member

13a and a pad for an in-vehicle electric apparatus in the pad mounting groove 13 for an in-vehicle electric apparatus

20 the gasket for an in-vehicle electric apparatus of the present invention has a sealing length when the entire first straight portion is in contact with a member to be sealed under compression

31 fixing projection

41 distance in a direction of compressing the pad for the in-vehicle electrical equipment from the pad contact surface 12a for the in-vehicle electrical equipment in the case member in a state before compressing the pad for the in-vehicle electrical equipment to the end of the first straight line portion 4

42 is a distance in the pad compression direction from the pad contact surface 13a for the in-vehicle electrical apparatus in the case member in the pre-compression state of the pad for the in-vehicle electrical apparatus to the end of the first straight line portion 4

90 comparison target pad for in-vehicle electric device

1L contact length of pad for in-vehicle electric device of the present application

90L comparison target pad contact length for in-vehicle electric device

100 case

101 cover

103 high voltage wiring harness.

Claims

1. A gasket for an in-vehicle electric apparatus, which seals between a first member to be sealed and a second member to be sealed that face each other,

the gasket for an in-vehicle electric apparatus includes a plurality of lips provided side by side so as to face each other in a direction orthogonal to the facing direction in at least one of a contact portion with the first sealed member and a contact portion with the second sealed member,

the mutually opposite inner walls of the lip are respectively formed with a first straight line portion and a second straight line portion having different angles,

the first linear portion is formed at a position closer to the member to be sealed with which the lip is in contact with, with respect to the second linear portion,

inner walls of the lip facing each other are formed in a shape in which an angle formed by a contact surface of the member to be sealed with the lip and the first straight portion is smaller than an angle formed by the contact surface and the second straight portion.

2. The pad for vehicle electric equipment according to claim 1,

the second linear portion is located on a center side in a direction orthogonal to the opposing direction of the first sealed member and the second sealed member with respect to the first linear portion.

3. The pad for vehicle electric equipment according to claim 1 or 2,

an angle of an outer side surface of the in-vehicle electrical equipment gasket in a direction orthogonal to the opposing direction of the first sealed member and the second sealed member with respect to a contact surface between the sealed member and the lip is an obtuse angle of 90 ° or more.

4. The pad for vehicle electric equipment according to any one of claims 1 to 3,

one of the first member to be sealed and the second member to be sealed is made of a resin material, the other is made of a metal material, a plurality of lips are provided at a portion in contact with the member to be sealed made of the metal material, and a single lip is provided at a portion in contact with the member to be sealed made of the resin material.

5. The pad for vehicle electric equipment according to claim 4,

the plurality of lips are located on the ground side and the single lip is located on the top side.