Contact device and method for manufacturing contact device

Abstract

The purpose of the present disclosure is to suppress an increase in pressure within a housing. The contact device (1) comprises: a body; a protruding block (5); a fixed contact; a first terminal (41); a moving contact; a second terminal (42); and a housing (6). Protruding blocks (5) are provided for the body. The housing (6) has a through hole (610). The through hole (610) includes an inner side. At least a part of the protruding block (5) is inserted into the through hole (610). The protruding block (5) is disposed so as to be in contact with at least one of the inner surface of the housing (6) and the inner side surface of the through hole (610).

Description

Technical Field

[0001] The present disclosure generally relates to a contact device and a method for manufacturing the contact device, and more particularly to a contact device including a housing for accommodating contacts and a method for manufacturing the contact device. Background Art

[0002] Patent document 1 describes an electromagnetic relay (contact device) comprising a relay body and a box-shaped cover (housing). The box-shaped cover has an opening with a groove. Through the opening in the box-shaped cover that has housed the relay body, a sealant is poured to fill the box-shaped cover. The sealant can also be filled in the groove, so the bonding area can be increased, and the bonding strength of the sealant can be further enhanced. Thus, a structure that can withstand reflow heat and has high reliability is easily obtained.

[0003] However, in the electromagnetic relay described in Patent Document 1, if the electromagnetic relay is heated in, for example, a reflow step, the internal pressure of the box-shaped cover may increase to break the housing.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2012-003951 Summary of the invention

[0007] An object of the present disclosure is to provide a contact device configured to suppress an increase in the internal pressure of a housing.

[0008] A contact device according to one aspect of the present disclosure includes a body, a fixed contact, a first terminal, a moving contact, a second terminal and a shell. The body has a surface. The one surface includes a flat central area and a peripheral area surrounding the central area. The first terminal is electrically connected to the fixed contact. The first terminal is exposed from the outer surface of the body. The moving contact is configured to contact or disengage with the fixed contact. The second terminal is electrically connected to the moving contact. The second terminal is exposed from the outer surface of the body. The shell has an outer surface and an inner surface. The shell accommodates at least a portion of the body, the fixed contact and the moving contact in an internal space located inside relative to the inner surface. The shell has a through hole for exposing the central area. The peripheral area is in contact with the inner surface of the shell.

[0009] A method for manufacturing a contact device according to one aspect of the present disclosure includes a molding step. The molding step includes pouring a molding material, which is a material for the shell, into a gap between a first mold and a second mold to mold the shell. The first mold is arranged on the outer surface side of the shell. The second mold is arranged on the inner surface side of the shell. Inside the through hole, a bonding surface between the first mold and the second mold is located at a boundary portion of the through hole between an area where no inner protrusion is arranged and an area located on the inner side of the inner protrusion.

[0010] According to another aspect of the present disclosure, a contact device includes a body, a protrusion block, a fixed contact, a first terminal, a moving contact, a second terminal and a housing. The protrusion block is configured to be used for the body. The first terminal is electrically connected to the fixed contact. The first terminal is exposed from the outer surface of the body. The moving contact is configured to contact or disengage with the fixed contact. The second terminal is electrically connected to the moving contact. The second terminal is exposed from the outer surface of the body. The housing has an outer surface and an inner surface. The housing accommodates at least a portion of the body, the fixed contact and the moving contact in an internal space located inside relative to the inner surface. The housing has a through hole. The through hole has an inner side surface. At least a portion of the protrusion block is inserted into the through hole. The protrusion block is arranged to contact at least one of the inner surface of the housing or the inner side surface of the through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] [ Figure 1 ] Figure 1 is a perspective view of the contact device according to the first embodiment.

[0012] [ Figure 2 ] Figure 2 It is a front exploded perspective view of the contact device.

[0013] [ Figure 3 ] Figure 3 It is a front exploded perspective view of the contact device.

[0014] [ Figure 4 ] Figure 4 It is a rear exploded perspective view of the contact device.

[0015] [ Figure 5 ] Figure 5 This is an enlarged view of the main part of the contact device.

[0016] [ Figure 6 ] Figure 6 It is a cross-sectional view of the main part of the contact device.

[0017] [ Figure 7 ] Figure 7It is an enlarged view of a main part of a contact device according to a first modified example of the first embodiment.

[0018] [ Figure 8 ] Figure 8 is a cross-sectional view of a main part of a contact device according to a first modified example.

[0019] [ Fig. 9 ] Fig. 9 It is an enlarged view of a main part of a contact device according to a second modified example of the first embodiment.

[0020] [ Fig.10 ] Fig.10 is a perspective view of a contact device according to a second embodiment.

[0021] [ Fig.11 ] Fig.11 is a cross-sectional view of a main part of a contact device according to a second embodiment.

[0022] [ Fig.12 ] Fig.12 is a cross-sectional view of a main portion of a contact device according to a third embodiment.

[0023] [ Fig.13 ] Fig.13 is a cross-sectional view of a main part of a contact device according to a fourth embodiment.

[0024] [ Fig.14 ] Fig.14 is a cross-sectional view of a main part of a contact device according to a fifth embodiment.

[0025] [ Fig.15 ] Fig.15 is a cross-sectional view of a main part of a contact device according to a sixth embodiment.

[0026] [ Fig.16 ] Fig.16 is a cross-sectional view of a main part of a contact device according to a seventh embodiment.

[0027] [ Fig.17 ] Fig.17 is a cross-sectional view of a main portion of a contact device according to an eighth embodiment.

[0028] [ Fig.18 ] Fig.18 is a cross-sectional view of a main part of a contact device according to a first modified example of the eighth embodiment.

[0029] [ Fig.19 ] Fig.19 is a cross-sectional view of a main part of a contact device according to a second modified example of the eighth embodiment.

[0030] [ Fig. 20 ] Fig. 20 It is a cross-sectional view of a method for manufacturing a contact device according to a sixth embodiment.

[0031] [ Fig.21 ] Fig.21 It is a cross-sectional view of a main part of a contact device according to a sixth embodiment.

[0032] [ Fig. 22 ] Fig. 22 is a cross-sectional view of a method for manufacturing a contact device according to a ninth embodiment.

[0033] [ Fig.23 ] Fig.23 is a cross-sectional view of a main part of a contact device according to a ninth embodiment.

[0034] [ Fig.24 ] Fig.24 It is a cross-sectional view of a method for manufacturing a contact device according to a first modified example of the ninth embodiment.

[0035] [ Fig.25 ] Fig.25 It is a cross-sectional view of a method for manufacturing a contact device according to a second modified example of the ninth embodiment.

[0036] [ Fig.26 ] Fig.26 is a cross-sectional view of a method for manufacturing a contact device according to a tenth embodiment. DETAILED DESCRIPTION

[0037] In each embodiment to be described below, the contact device of the present disclosure will be described with reference to the accompanying drawings. It should be noted that each embodiment to be described below is only an example of various embodiments of the present disclosure. As long as the purpose of the present disclosure is achieved, various modifications can be made to the following embodiments according to the design, etc. In addition, the figures described in the following embodiments are schematic diagrams, and therefore, the size ratio and thickness ratio of each component in the figure do not necessarily reflect the actual size ratio.

[0038] (First Embodiment)

[0039] (summary)

[0040] Figure 1 The entire view of the contact device 1 of this embodiment is shown. The contact device 1 can be mounted on a substrate. The contact device 1 is a small device that can be mounted on a substrate having a size of about 100 mm×about 50 mm, for example.

[0041] For example, in order to mount the contact device 1 on a substrate, a reflow step is performed to solder terminals (eg, first terminals 41 and second terminals 42 to be described later) of the contact device 1 to the substrate. The reflow step includes heating the contact device 1.

[0042] For the purpose of ensuring the dustproof performance of the contact device 1, for example, when the housing 6 of the contact device 1 has a sealed structure, heating the contact device 1 may cause the gas inside the housing 6 to expand, and thus the internal pressure of the housing 6 may increase. The increase in the internal pressure may cause damage to the housing 6. Therefore, the contact device 1 of the present embodiment has a structure configured to suppress the increase in the internal pressure of the housing 6.

[0043] like Figure 2 As shown, the contact device 1 of the present embodiment includes a body B1, a protrusion block 5, a fixed contact 231, a first terminal 41, a moving contact 271, a second contact 42 and a housing 6. The protrusion block 5 is provided for the body B1. The first terminal 41 is electrically connected to the fixed contact 231. The first terminal 41 is exposed from the outer surface of the body B1. More specifically, the first terminal 41 is exposed from the lower surface 120 of the body B1. The moving contact 271 is in contact with or out of contact with the fixed contact 231. The second terminal 42 is electrically connected to the moving contact 271. The second terminal 42 is exposed from the outer surface of the body B1. More specifically, the second terminal 42 is exposed from the lower surface 120 of the body B1. The housing 6 has an outer surface 60a and an inner surface 60b (see Figure 6 ). The housing 6 accommodates at least a portion of the body B1, the fixed contact 231, and the moving contact 271 in an internal space located inside the inner surface 60b. The housing 6 has a through hole 610. The through hole 610 has an inner side surface 611. At least a portion of the protrusion 5 is inserted into the through hole 610 (see Figure 1 ). More specifically, the protrusion block 5 has a first protrusion 51 inserted into the through hole 610. The protrusion block 5 is arranged to contact at least one of the inner surface 60b of the housing 6 or the inner side surface 611 of the through hole 610.

[0044] According to the present embodiment, the gas that expands inside the housing 6 when the contact device 1 is heated, for example, in a reflow step, can be allowed to escape through the gap between the protrusion block 5 and the housing 6 (for example, the gap between the first protrusion 51 and the inner side surface 611 of the through hole 610). The gap is, for example, pre-existing or formed when the internal pressure causes the housing 6 to move or deform.

[0045] This can suppress the increase in the internal pressure of the housing 6. Thus, the possibility that the internal pressure of the housing 6 may increase and damage the housing 6 can be reduced. In addition, the possibility that damage to the housing 6 may impair the dustproof performance of the contact device 1 can be reduced.

[0046] In addition, at least a portion of the protruding block 5 is inserted into the through hole 610 , thereby reducing the possibility that foreign matter may enter the interior of the housing 6 through the through hole 610 .

[0047] In addition, as described above, the contact device 1 of the present embodiment includes the body B1, the fixed contact 231, the first terminal 41, the moving contact 271, the second terminal 42, and the housing 6. The first terminal 41 is electrically connected to the fixed contact 231. The first terminal 41 is exposed from the outer surface of the body B1. The moving contact 271 is in contact with or out of contact with the fixed contact 231. The second terminal 42 is electrically connected to the moving contact 271. The second terminal 42 is exposed from the outer surface of the body B1. The housing 6 has an outer surface 60a and an inner surface 60b. The housing 6 accommodates at least a part of the body B1, the fixed contact 231, and the moving contact 271 in an inner space located on the inner side relative to the inner surface 60b. The housing 6 has a through hole 610. The through hole 610 has an inner side surface 611. At least one of the peripheral portion of the through hole 610 or the inside of the through hole 610, the surface (bottom surface 520) of the body B1 is in contact with at least one of the inner surface 60b of the housing 6 or the inner side surface 611 of the through hole 610. In addition, there is a contact area between the surface (bottom surface 520) of the body B1 and at least one of the inner surface 60b of the housing 6 or the inner side surface 611 of the through hole 610 so as to surround the central axis of the through hole 610. Thus, the gas that expands inside the housing 6 when the contact device 1 is heated is allowed to escape through the gap between the body B1 and the housing 6. Thus, it is possible to suppress the increase in the internal pressure of the housing 6. The gap is, for example, pre-existing or formed when the internal pressure causes the housing 6 to move or deform.

[0048] (detail)

[0049] (1) Overall structure

[0050] The contact device 1 of the present embodiment will be described in more detail below with reference to the accompanying drawings. In the following description, the direction in which the first terminal 41 and the second terminal 42 protrude from the body B1 is also referred to as the "downward" direction, the direction opposite to the downward direction is also referred to as the "upward" direction, and the virtual axis extending up and down is also referred to as the first axis A1. In addition, the second terminal 42 is located at the "left" position of the first terminal 41, the first terminal 41 is located at the "right" position of the second terminal 42, and the virtual axis along which the first terminal 41 and the second terminal 42 are aligned side by side and is orthogonal to the first axis A1 is also referred to as the second axis A2. In addition, the virtual axis orthogonal to both the first axis A1 and the second axis A2 is also referred to as the third axis A3. In the present embodiment, the fixed contact 231 and the moving contact 271 face each other in the direction along the third axis A3, and in the following description, the fixed contact 231 is located at the "forward" position of the moving contact 271, and the moving contact 271 is located at the "backward" position of the fixed contact 231. It should be noted that these directions are set forth for the convenience of description, but do not limit the directions in which the contact device 1 is used.

[0051] The contact device 1 is a so-called hinge type relay. In addition, the contact device 1 is an electromagnetic relay that drives the moving contact 271 using electromagnetic force.

[0052] like Figure 2 As shown, the contact device 1 includes: a contact unit 2, which includes a fixed contact 231 and a moving contact 271; an electromagnetic drive unit 3, which includes a coil 33; and a housing H1. The electromagnetic drive unit 3 moves the moving contact 271 relative to the fixed contact 231 in response to the energization of the coil 33. As described later, the body B1 includes a part of the electromagnetic drive unit 3 and a part of the housing H1. In addition, the electromagnetic drive unit 3 is provided with a protrusion block 5.

[0053] The contact device 1 includes a first terminal 41 and a second terminal 42 , and further includes two coil terminals 43 and 44 .

[0054] (2) Housing

[0055] The housing H1 is substantially in the shape of a rectangular parallelepiped. Figure 1 and Figure 2 As shown, the housing H1 includes a base 11 and a shell 6. The base 11 is made of resin. The shell 6 is made of resin. The base 11 holds the contact unit 2 and the electromagnetic drive unit 3. The shell 6 is attached to the base 11 to cover the base 11 holding the contact unit 2 and the electromagnetic drive unit 3. The contact unit 2 and the electromagnetic drive unit 3 are arranged in the internal space of the shell 6. That is, the shell 6 accommodates the contact unit 2 and the electromagnetic drive unit 3.

[0056] like Figure 2 As shown, the base 11 integrally includes a base portion 12 and a partition wall 13 .

[0057] The base portion 12 is in a rectangular plate shape, with its thickness direction along the first axis A1, and its dimension along the second axis A2 being greater than its dimension along the third axis A3. In the present disclosure, "rectangular" is a concept including a rectangle and a square.

[0058] The partition wall 13 is a wall extending upward from the upper surface of the base portion 12 along the first axis A1. The contact unit 2 is arranged in front of the partition wall 13. The electromagnetic drive unit 3 is arranged behind the partition wall 13. The partition wall 13 electrically insulates the contact unit 2 and the electromagnetic drive unit 3 from each other.

[0059] The partition wall 13 has a front surface having a recessed portion 131 recessed rearward at a lower center portion thereof. The contact unit 2 is arranged in the recessed portion 131 .

[0060] like Figure 4 As shown, the partition wall 13 also has a rear surface, which is provided with a separation wall 14 protruding backward, which extends left and right and is formed at the center between the upper end and the lower end of the rear surface. The coil 33 of the electromagnetic drive unit 3 is arranged above the separation wall 14, and the armature 37 (described later) of the electromagnetic drive unit 3 is arranged below the separation wall 14. The separation wall 14 physically separates the armature 37 from the coil 33, thereby increasing the insulation distance between the armature 37 and the coil 33.

[0061] like Figure 2 and Figure 4 As shown, the housing 6 is in the shape of a hollow rectangular box, and its lower surface has an opening. The housing 6 is mounted on the base 11 in a manner of covering the base 11 from above.

[0062] The housing 6 includes a top plate 61 and a plurality of (four in the present embodiment) side plates 66. In the following description, the plurality of side plates 66 may be distinguished from each other by being referred to as side plates 62 to 65.

[0063] The top plate 61 has a rectangular shape. The top plate 61 has a thickness direction along the first axis A1. A plurality of side plates 66 protrude downward from the outer edge of the top plate 61. The side plate 62 includes a front surface of the housing 6. The side plate 63 includes a right side surface of the housing 6. The side plate 64 includes a rear surface of the housing 6. The side plate 65 includes a left side surface of the housing 6.

[0064] The housing 6 has an outer surface 60a and an inner surface 60b (see Figure 6). The outer surface 60a includes the upper surface of the top plate 61, the front surface of the side plate 62, the right side surface of the side plate 63, the rear surface of the side plate 64, and the left side surface of the side plate 65. The inner surface 60b includes the lower surface 612 of the top plate 61, the rear surface of the side plate 62, the left side surface of the side plate 63, the front surface of the side plate 64, and the right side surface of the side plate 65. The housing 6 accommodates the contact unit 2 and the electromagnetic drive unit 3 in the internal space located inside relative to the inner surface 60b.

[0065] The housing 6 has a through hole 610. In this embodiment, the through hole 610 is provided in the top plate 61. That is, the through hole 610 passes through the top plate 61 in the up-down direction. The through hole 610 is a circular hole.

[0066] The through hole 610 is provided in the upper surface of the housing 6. That is, the through hole 610 is provided on the side of the housing 6 opposite to the first terminal 41 and the second terminal 42. This can reduce the possibility that flux may enter the interior of the housing 6 through the through hole 610 when the first terminal 41 and the second terminal 42 are soldered to the substrate.

[0067] The through hole 610 has an inner side surface 611. The inner side surface 611 has a shape corresponding to the inner surface of a cylinder.

[0068] In addition, if Figure 6 As shown, the housing 6 further includes a second protrusion 67 protruding from the lower surface 612 of the top plate 61. The inner surface 60b of the housing 6 includes a lower surface 670 and an outer side surface 671 of the second protrusion 67.

[0069] The base 11 on which the contact unit 2 and the electromagnetic drive unit 3 have been mounted is covered with the housing 6 , and in this state, an adhesive is applied to, for example, the base portion 12 of the base 11 , thereby fixing the housing 6 to the base 11 .

[0070] (3) Contact unit

[0071] like Figure 2 As shown, the contact unit 2 includes a fixed member 21 and a movable member 25 .

[0072] The fixing member 21 has conductivity. The fixing member 21 is made of, for example, metal. The fixing member 21 is plate-shaped. The fixing member 21 integrally includes a fixing sheet 22 and a contact sheet 23 .

[0073] The fixing piece 22 is fixed to the base 11. That is, the fixing piece 22 is fixed to the body B1. The contact piece 23 is in a plate shape protruding rightward from the right side surface of the fixing piece 22. The contact piece 23 has a rear surface provided with a fixed contact 231. The fixed contact 231 is arranged at the right end of the contact piece 23.

[0074] The fixed contact 231 is composed of a member different from the contact sheet 23 and is fixed to the contact sheet 23. Note that this should not be construed as limiting, and the fixed contact 231 may be formed integrally with the contact sheet 23. For example, the rear surface of a plate member included in the contact sheet 23 may be used as the fixed contact 231.

[0075] The movable member 25 is conductive. The movable member 25 is made of, for example, metal. The movable member 25 is plate-shaped. The movable member 25 integrally includes a fixed piece 26, an operating piece 27, and a spring piece 28.

[0076] The fixed sheet 26 is fixed to the base 11. That is, the fixed sheet 26 is fixed to the body B1. The operating sheet 27 faces the rear surface of the contact sheet 23 of the fixed member 21. The front surface of the operating sheet 27 is provided with a moving contact 271. The moving contact 271 is arranged at the right end of the operating sheet 27. The moving contact 271 and the fixed contact 231 face each other in the direction along the third axis A3. The moving contact 271 moves between a contact position and a separation position. The contact position is a position where the moving contact 271 contacts the fixed contact 231. The separation position is a position where the moving contact 271 is out of contact with the fixed contact 231.

[0077] The contact device 1 of the present embodiment includes two moving contacts 271. The two moving contacts 271 are arranged in parallel in the vertical direction.

[0078] The moving contact 271 is constituted by a member different from the operating sheet 27, and is fixed to the operating sheet 27. Note that this should not be construed as limiting, and the moving contact 271 may be formed integrally with the operating sheet 27. For example, the front surface of a plate member included in the operating sheet 27 may serve as the moving contact 271.

[0079] The spring piece 28 is a leaf spring and connects the right side of the fixing piece 26 to the left side of the operating piece 27 .

[0080] The moving contact 271 is held by the base 11 of the body B1 via the movable member 25. The fixed contact 231 is held by the base 11 of the body B1 via the fixed member 21.

[0081] The moving contact 271 and the fixed contact 231 are arranged at the central lower side in the housing H1. Compared with the case where the moving contact 271 and the fixed contact 231 are arranged at the central upper side in the housing, the length of the conductive path including the moving contact 271, the fixed contact 231, the second terminal 42 electrically connected to the moving contact 271, and the first terminal 41 electrically connected to the fixed contact 231 can be reduced.

[0082] (4) Electromagnetic drive unit

[0083] like Figure 3 and Figure 4 As shown, the electromagnetic drive unit 3 includes an iron core 31 , a coil bobbin 32 , a coil 33 , an armature 37 , and a moving body 38 .

[0084] The iron core 31 is made of magnetic material. The iron core 31 is in the shape of a thin plate having a thickness direction along the third axis A3. The iron core 31 includes a main body extending left and right along the second axis A2, a first leg 312 extending downward from the left end of the main body along the first axis A1, and a second leg 313 extending downward from the right end of the main body along the first axis A1. The iron core 31 is in a generally C-shaped shape opening downward. The coil 33 is wound on the main body via the coil bobbin 32.

[0085] The coil bobbin 32 is made of resin. The coil bobbin 32 is made of, for example, liquid crystal polymer (LCP). The coil bobbin 32 integrally includes a main portion, a pair of flanges 322 and 322, a first extension portion 323, a second extension portion 324, and a third extension portion 325.

[0086] The main portion is in the shape of a groove that opens forward and has a substantially C-shaped cross section that is orthogonal to the second axis A2. The main portion extends leftward and rightward along the second axis A2.

[0087] A pair of flanges 322 and 322 are formed at left and right ends of the main portion.

[0088] The first extension portion 323 extends leftward from the left end of the main portion. The first extension portion 323 is in the shape of a groove opening forward and downward. The groove of the first extension portion 323 is connected to the groove of the main portion. The rear surface of the first extension portion 323 has a lower end, which is provided with a plate-shaped and downwardly protruding limiting piece 328.

[0089] The second extension 324 extends rightward from the right end of the main part. The second extension 324 is a groove-shaped opening forward. The third extension 325 extends downward from the right end of the second extension 324. The third extension 325 is a groove-shaped opening forward and downward. The groove of the second extension 324, the groove of the third extension 325 and the groove of the main part are connected to each other. The second extension 324 has a rear surface, and the lower end of the rear surface is provided with a positioning piece 326, which is plate-shaped and protrudes downward. The positioning piece 326 has a front surface, and the front surface is located at the front side of the front surface of the limiting piece 328.

[0090] In addition, the coil bobbin 32 is formed integrally with the protruding block 5. The second extending portion 324 is connected to the protruding block 5. The details of the protruding block 5 will be described later.

[0091] The iron core 31 is fitted (press-fitted) into the grooves (the grooves of the main portion, the first extension portion 323, the second extension portion 324, and the third extension portion 325) of the coil bobbin 32, and thus the iron core 31 is held by the coil bobbin 32. It is to be noted that the iron core 31 may be formed together with the coil bobbin 32 by insert molding.

[0092] The second extension portion 324 of the coil bobbin 32 has a pair of through holes 327 and 327 (see FIG. 3 ) that penetrate the second extension portion 324 front to back along the third axis A3. Figure 6 ).

[0093] The coil 33 is a hollow tube formed by winding, for example, a copper wire, and is wound around the main body of the core 31 and the main part of the coil bobbin 32 while the core 31 is inserted into the groove of the coil bobbin 32 .

[0094] The two coil terminals 43 and 44 are conductive. The two coil terminals 43 and 44 are made of, for example, metal. The coil terminal 43 is electrically connected to a first end of the coil 33. The coil terminal 44 is electrically connected to a second end of the coil 33.

[0095] The two coil terminals 43 and 44 are held by the coil bobbin 32. The coil terminal 43 is inserted into one through hole (the through hole 327 on the left side) of a pair of through holes 327 and 327 formed in the second extension 324 of the coil bobbin 32, and thus the coil terminal 43 is held by the coil bobbin 32. In addition, the coil terminal 44 is inserted into the other through hole (the through hole 327 on the right side) of the pair of through holes 327 and 327, and thus the coil terminal 44 is held by the coil bobbin 32.

[0096] The armature 37 is made of a magnetic material and has a rectangular plate shape extending along the second axis A2 and has a thickness direction along the third axis A3.

[0097] By using the right end 371 of the armature 37 as a swing axis, the armature 37 is arranged to swing back and forth. Specifically, the right end 371 of the armature 37 is located between the second leg 313 of the core 31 and the positioning piece 326 of the coil bobbin 32. The distance between the second leg 313 and the positioning piece 326 (the dimension along the third axis A3) is approximately equal to (slightly greater than) the thickness of the right end 371 of the armature 37 (the dimension along the third axis A3). This limits the forward and backward movement of the right end 371 of the armature 37 along the third axis A3. In contrast, the armature 37 has a left end 372 located between the first leg 312 of the core 31 and the limiting piece 328 of the coil bobbin 32. The distance between the first leg 312 and the limiting piece 328 (the dimension along the third axis A3) is greater than the thickness of the left end 372 of the armature 37 (the dimension along the third axis A3). As a result, the left end 372 of the armature 37 can move forward and backward along the third axis A3. It should be noted that the left end portion 372 of the armature 37 is restricted by the first leg portion 312 so as not to move excessively forward, and is restricted by the restriction piece 328 so as not to move excessively backward.

[0098] The moving body 38 (also referred to as a card) is made of resin. The moving body 38 is made of, for example, a liquid crystal polymer. The moving body 38 is a tubular shape covering the central portion between the left end portion 372 and the right end portion 371 of the armature 37. The moving body 38 is, for example, a resin molded product provided with the armature 37 as an insert. The moving body 38 moves together with the armature 37.

[0099] The moving body 38 has a front surface having a protrusion 381 protruding forward. The protrusion 381 is inserted from the rear into a through hole formed in the partition wall 13 of the base 11 and exposed in the recess 131 of the partition wall 13. As the armature 37 moves forward and backward, the protrusion amount of the protrusion 381 in the recess 131 changes.

[0100] The protrusion 381 has a front end facing the rear surface of the operating piece 27 of the movable member 25. When the protrusion 381 moves forward as the armature 37 moves forward, the operating piece 27 is pushed by the protrusion 381 and moves forward, so the moving contact 271 contacts the fixed contact 231.

[0101] (5)Terminal

[0102] like Figures 2 to 4 As shown, the contact device 1 includes a first terminal 41 , a second terminal 42 and two coil terminals 43 and 44 .

[0103] The first terminal 41 is conductive. The first terminal 41 is made of, for example, metal. The first terminal 41 is connected to the fixing member 21. The first terminal 41 extends downward from the fixing piece 22 of the fixing member 21.

[0104] In the present embodiment, the first terminal 41 is formed integrally with the fixing member 21. For example, one metal plate is subjected to a punching process and a bending process, and thus, the fixing member 21 is formed integrally with the first terminal 41.

[0105] The second terminal 42 is conductive. The second terminal 42 is made of, for example, metal. The second terminal 42 is connected to the movable member 25. The second terminal 42 extends downward from the fixed piece 26 of the movable member 25.

[0106] In the present embodiment, the second terminal 42 is formed integrally with the movable member 25. For example, one metal plate is subjected to a punching process and a bending process, and thus, the movable member 25 and the second terminal 42 are formed integrally.

[0107] Each of the two coil terminals 43 and 44 is conductive. Each of the two coil terminals 43 and 44 is made of, for example, metal.

[0108] Each of the first terminal 41 , the second terminal 42 , and the coil terminals 43 and 44 is exposed from the lower surface 120 of the base portion 12 of the body B1 and protrudes downward.

[0109] For example, the contact device 1 is fixed (connected) to the substrate by inserting the first terminal 41, the second terminal 42 and the coil terminals 43 and 44 into a plurality of through holes in a substrate as a counter member and welding the first terminal 41, the second terminal 42 and the coil terminals 43 and 44 to the substrate.

[0110] (6) Operation

[0111] Next, the operation of the contact device 1 will be briefly described.

[0112] First, when no voltage is applied between the two coil terminals 43 and 44 and thus no current flows through the coil 33 (the coil 33 is not energized), the operating piece 27 is located at a relatively rearward position due to the spring force of the spring piece 28 of the movable member 25, and the moving contact 271 is separated from the fixed contact 231. In addition, the armature 37 and the moving body 38 are pushed backward by the operating piece 27 via the protrusion 381, and thus the left end portion 372 of the armature 37 is located at a relatively rearward position (a position close to the limiting piece 328).

[0113] When a voltage is applied between the two coil terminals 43 and 44 and a current thereby flows through the coil 33 (the coil 33 is energized), the coil 33 is excited and a magnetic attraction force is generated between the left end portion 372 of the armature 37 and the first leg portion 312 of the core 31, so that the left end portion 372 of the armature 37 is attracted to the first leg portion 312. That is, the armature 37 and the moving body 38 rotate using the right end portion 371 of the armature 37 as a rotation axis (rotates counterclockwise when viewed from above).

[0114] The rotation of the moving body 38 moves the protrusion 381 forward, and the operation piece 27 is pushed by the protrusion 381 and thus moves forward. Thus, the moving contact 271 arranged in front of the operation piece 27 contacts the fixed contact 231, thus forming a conductive path between the second terminal 42 and the first terminal 41.

[0115] On the other hand, when the voltage application between the two coil terminals 43 and 44 is canceled (the coil 33 is not energized), the spring force of the spring piece 28 of the movable member 25 moves the operating piece 27 backward, thereby separating the moving contact 271 from the fixed contact 231. This disconnects the conductive path between the second terminal 42 and the first terminal 41. In addition, the operating piece 27 pushes the protrusion 381, thereby moving the armature 37 and the moving body 38 backward.

[0116] (7)Ontology

[0117] As described above, the first terminal 41 and the second terminal 42 are exposed from the outer surface (lower surface 120) of the body B1, and the protrusion block 5 is provided for the body B1. More specifically, the first protrusion 51 of the protrusion block 5 protrudes from the body B1. In addition, the first protrusion 51 protrudes upward.

[0118] The body B1 includes a coil bobbin 32 and a base 11. The housing 6 is attached to the base 11 of the body B1.

[0119] (8) Protrusion

[0120] Next, we will refer to Figure 5 and Figure 6 The protruding block 5 will be described.

[0121] The protrusion block 5 includes a first protrusion 51 and a portion provided in a region around the first protrusion 51. More specifically, the protrusion block 5 includes the first protrusion 51, a first groove 52, and a peripheral wall portion 53. The first groove 52 and the peripheral wall portion 53 correspond to the portion provided in a region around the first protrusion 51. In the present embodiment, the portion provided in the region around the first protrusion 51 is more specifically a portion connected to the outer edge of the first protrusion 51 and surrounding the first protrusion 51.

[0122] The first protrusion 51 and the peripheral wall portion 53 protrude from the second extending portion 324 of the coil bobbin 32. More specifically, the first protrusion 51 and the peripheral wall portion 53 protrude upward from the second extending portion 324.

[0123] The first protrusion 51 has an upper end, and the upper surface of the upper end (front end face 511) is a curved surface convex upward. The first protrusion 51 has a portion located below the upper end and is cylindrical. That is, the first protrusion 51 has a constant width in the portion located below the upper end and has a width that decreases upward at the upper end. In addition, the first protrusion 51 protrudes from the body B1, and the first protrusion 51 has a cross-sectional area that decreases monotonically toward the front end of the first protrusion 51. More specifically, the first protrusion 51 protrudes from the body B1 along an axial direction (upward direction), and the area of ​​the first protrusion 51 in a cross section orthogonal to the one axial direction decreases monotonically toward the front end of the first protrusion 51. That is, the cross-sectional area of ​​the first protrusion 51 decreases monotonically upward. The first protrusion 51 has an outer peripheral surface 510 in the shape of a cylindrical side surface.

[0124] That being said, the "monotonically decreasing" cross-sectional area in an interval means the following two situations: the cross-sectional area in the interval continuously decreases, and the cross-sectional area in one or more ranges in the interval is constant and the cross-sectional area in the remaining ranges in the interval continuously decreases.

[0125] The peripheral wall portion 53 is tubular. More specifically, when viewed from above, the peripheral wall portion 53 has an inner side surface 530 of a circular shape, and the peripheral wall portion 53 has an outer side surface 531 of a rectangular shape. The first protrusion 51 is surrounded by the peripheral wall portion 53.

[0126] The first groove 52 is located between the first protrusion 51 and the peripheral wall portion 53. More specifically, the first groove 52 is a space surrounded by the outer peripheral surface 510 of the first protrusion 51 and the inner side surface 530 of the peripheral wall portion 53. The space constituting the first groove 52 is cylindrical. In addition, the first groove 52 is a space that is recessed downward relative to the peripheral wall portion 53 as the peripheral edge portion of the first groove 52. The normal direction of the bottom surface 520 of the first groove 52 is the upward direction. The bottom surface 520 is annular.

[0127] The second protrusion 67 of the housing 6 is inserted into the first groove 52. The second protrusion 67 is cylindrical.

[0128] The housing 6 is arranged so that the second protrusion 67 contacts the inner surface of the first groove 52. The inner surface of the first groove 52 refers to the outer peripheral surface 510 of the first protrusion 51, the inner side surface 530 of the peripheral wall portion 53, and the bottom surface 520 of the first groove 52. In this embodiment, the second protrusion 67 contacts the bottom surface 520 of the inner surface of the first groove 52 (see Figure 6 ). More specifically, the front end (lower surface 670 ) of the second protrusion 67 contacts the bottom surface 520 . The second protrusion 67 is arranged to be separated from the outer peripheral surface 510 of the first protrusion 51 and the inner side surface 530 of the peripheral wall portion 53 .

[0129] Note that this should not be construed as limiting, and the second protrusion 67 may contact one or more of the outer peripheral surface 510 of the first protrusion 51 , the inner side surface 530 of the peripheral wall portion 53 , and the bottom surface 520 of the first groove 52 .

[0130] In addition, the protrusion block 5 may be arranged to contact at least one of the inner surface 60b of the housing 6 or the inner side surface 611 of the through hole 610. Figure 6 In the embodiment, the bottom surface 520 of the first groove 52 of the protruding block 5 is in contact with the lower surface 670 (of the second protrusion 67 ) of the inner surface 60 b of the housing 6 .

[0131] It is to be noted that this should not be construed as limiting, and for example the peripheral wall portion 53 may be arranged to contact the inner surface 60b of the housing 6. More specifically, the inner side surface 530 of the peripheral wall portion 53 may contact the outer side surface 671 of the second protrusion 67. The upper surface 532 of the peripheral wall portion 53 may contact the lower surface 612 of the top plate 61.

[0132] In addition, for example, the outer peripheral surface 510 of the first protrusion 51 may be arranged to be in contact with the inner side surface 611 of the through hole 610 .

[0133] In addition, when any portion of the protrusion block 5 contacts the housing 6 , the lower surface 670 of the second protrusion 67 may be separated from the bottom surface 520 of the first groove 52 .

[0134] The protruding block 5 preferably contacts the top plate 61 of the inner surface 60 b of the housing 6 or the surface of a component (eg, the second protrusion 67 ) disposed on the top plate 61 .

[0135] The front end face of the protrusion block 5 inserted into the through hole 610 (here, the front end face 511 of the first protrusion 51) is located at a recessed position relative to the outer surface 60a of the housing 6. That is, when observing a cross section orthogonal to the first axis A1, a gap G1 is provided between the front end face 511 and the outer surface 60a in the direction of the first axis A1.

[0136] The protrusion block 5 of the present embodiment is formed integrally with the body B1. More specifically, the protrusion block 5 is formed integrally with the coil bobbin 32 of the body B1. The first protrusion 51 is formed integrally with the body B1.

[0137] In addition, the protruding block 5 is in surface contact with the housing 6 .

[0138] The protrusion block 5 and the housing 6 are in annular line contact with each other. That is, in the protrusion block 5, the area where the contact pressure is generated with the housing 6 is annular. That is, the area where the protrusion block 5 and the housing 6 are in contact with each other is a continuous ring.

[0139] At the peripheral portion of the through hole 610 , the protruding block 5 is in contact with the housing 6 but is not bonded to the housing 6 , and therefore, when the housing 6 moves or deforms, the contact of the protruding block 5 with the housing 6 is released.

[0140] (9) Usage examples

[0141] The contact device 1 is mounted on the substrate by, for example, a reflow step. If the housing 6 is sealed before the reflow step, heating the contact device 1 in the reflow step may cause the internal gas of the housing 6 to expand, thus increasing the internal pressure of the housing 6.

[0142] In contrast, in the contact device 1 of the present embodiment, the housing 6 has a through hole 610, thereby allowing the gas expanding inside the housing 6 to escape through the gap between the protruding block 5 and the housing 6. Figure 6 As shown, the lower surface 670 of the second protrusion 67 contacts the bottom surface 520 of the first groove 52, but when there is a gap between the lower surface 670 and the bottom surface 520 just enough for gas to pass through, or when the internal pressure moves or deforms the housing 6 to form a gap, gas is allowed to escape. This can suppress the increase in the internal pressure of the housing 6.

[0143] The sealing step of sealing the housing 6 may be performed after the reflow step. The sealing step is, for example, a step of injecting a sealant into the through hole 610 of the housing 6. The sealant is, for example, an adhesive. The sealant fills the gap between the housing 6 and the protrusion block 5, for example, fills the gap between the first protrusion 51 and the second protrusion 67. The sealant fills the gap between the protrusion block 5 and the housing 6, thereby sealing the housing 6. In addition, the front end surface 511 of the first protrusion 51 is located at a recessed position relative to the outer surface 60a of the housing 6, thereby reducing the possibility of the sealant overflowing the through hole 610.

[0144] In addition, the sealing step may be, for example, a step of welding the housing 6 and the protruding block 5 to each other. The housing 6 and the protruding block 5 may be welded to each other by, for example, laser welding or the like.

[0145] Performing the sealing step can enhance the dustproof performance of the contact device 1. In addition, performing the sealing step after the reflow step can enhance the dustproof performance of the contact device 1 while suppressing the internal pressure of the housing 6 from increasing during the reflow step.

[0146] In addition, the through hole 610 is smaller than the opening in the lower surface of the housing 6 , and therefore, by closing the through hole 610 in the sealing step, the housing 6 can be easily sealed.

[0147] (10) Modification of the First Embodiment

[0148] The following are modified examples of the first embodiment. In the following description, the first embodiment may also be referred to as a "basic example". The basic example and the following modified examples may be appropriately combined.

[0149] (10.1) First Modification

[0150] Reference Figure 7 and Figure 8 , a contact device 1A according to a first modified example will be described. In the contact device 1A according to the first modified example, descriptions of components identical to those of the contact device 1 according to the basic example may be omitted accordingly.

[0151] A contact device 1A according to the first modified example is different from the contact device 1 according to the basic example in that the contact device 1A includes a protruding block 5A instead of the protruding block 5 .

[0152] The protrusion block 5A includes a first protrusion 51, a first groove 52 and a peripheral wall portion 53, and also includes a small protrusion 54. The small protrusion 54 protrudes from a surface (upper surface 532) of the peripheral wall portion 53 that faces the inner surface 60b of the housing 6. Note that in the first modification, the peripheral wall portion 53 is cylindrical.

[0153] In particular, the protruding block 5A of the first modified example includes a plurality of (in Figure 7 In the embodiment, there are 4 small protrusions 54. The plurality of small protrusions 54 are arranged separately from each other. More specifically, the plurality of small protrusions 54 are arranged in a circular ring shape.

[0154] Each small protrusion 54 is in the shape of a hemisphere convex upward. It should be noted that the shape of each small protrusion 54 is not limited to this example, but can be, for example, a columnar or frustum-shaped shape.

[0155] The protrusion block 5A includes a plurality of small protrusions 54 that are integral with the peripheral wall portion 53 .

[0156] Each small protrusion 54 is arranged to contact the inner surface 60b of the housing 6. More specifically, as shown in FIG. Figure 8 As shown, the front end of each small protrusion 54 is in contact with the lower surface 612 of the top plate 61. Each of the plurality of small protrusions 54 of the protrusion block 5A is in point contact with the housing 6.

[0157] In the first modification, when the reflow step is performed, the gas can flow out through the gaps between the small protrusions 54 and the small protrusions 54 , thereby improving the effect of suppressing the increase in the internal pressure of the housing 6 .

[0158] (10.2) Second Modification

[0159] Reference Fig. 9, a contact device 1B according to a second modification will be described. In the contact device 1B according to the second modification, descriptions of components identical to those of the contact device 1A according to the first modification may be omitted accordingly.

[0160] The contact device 1B of the second modified example is different from the contact device 1A of the first modified example in that the contact device 1B includes a protrusion block 5B instead of the protrusion block 5A. The protrusion block 5B includes a small protrusion 54B instead of the plurality of small protrusions 54. The small protrusion 54B protrudes from the upper surface 532 of the peripheral wall portion 53. The small protrusion 54B is annular. More specifically, when viewed in the protruding direction (upward direction) of the small protrusion 54B, the small protrusion 54B is annular. More specifically, when viewed from above, the small protrusion 54B is annular. The small protrusion 54B surrounds the first protrusion 51.

[0161] The cross-sectional shape of the small protrusion 54B is a semicircular shape convex upward. Figure 8 The cross-sectional shape of the protruding block 5A shown is consistent.

[0162] The protrusion block 5B is in line contact with the housing 6. More specifically, the small protrusion 54B of the protrusion block 5B is in line contact with the housing 6. In addition, the small protrusion 54B and the housing 6 are in contact with each other in an annular region. That is, in the small protrusion 54B, the region where the contact pressure is generated with the housing 6 is annular. This enhances the dustproof performance of the housing 6 compared to the first modification.

[0163] (10.3) Other variations

[0164] In a modified example, the first protrusion 51 may be, for example, in a hemispherical shape, a cylindrical shape, a prism shape, a truncated cone shape, or a truncated pyramid shape.

[0165] In one modification, the cross-sectional area of ​​at least the front end (upper end) of the first protrusion 51 may decrease monotonically upward. That is, in this modification, the cross-sectional area of ​​the first protrusion 51 other than the front end does not necessarily decrease monotonically.

[0166] In a modified example, the protruding block 5 does not necessarily include the peripheral wall portion 53. Even when the protruding block 5 does not have the peripheral wall portion 53, the protruding block 5 may have the first groove 52, in which case the first groove 52 is a recess formed in the body B1.

[0167] In a modified example, the second protrusion 67 may have spring characteristics and may generate a force for clamping the first protrusion 51 .

[0168] In a modified example, the number of terminals included in the contact device 1 is not limited to 4. For example, the contact device 1 may include two or more contact units 2, each of which includes a set of moving contacts 271 and fixed contacts 231. In this case, the contact device 1 may include two or more first terminals 41 and / or second terminals 42.

[0169] In a modified example, the opposing member to which the contact device 1 is connected is not limited to a substrate, but the opposing member may be, for example, a terminal block.

[0170] In a modified example, the structure of the contact unit 2 is not limited to the structure in which the moving contact 271 contacts the fixed contact 231 when the coil 33 is energized (so-called normally open contact). The contact unit 2 may have a structure in which the moving contact 271 contacts the fixed contact 231 when the coil 33 is not energized (so-called normally closed contact). Alternatively, the contact unit 2 may have a so-called switching contact structure.

[0171] (Second Embodiment)

[0172] Reference Fig.10 and Fig.11 , a contact device 1C of a second embodiment will be described. The description of the same components as those in the contact device 1 of the basic example of the first embodiment may be omitted accordingly. Note that the components described in the first embodiment and the modified examples including them are applicable to the second embodiment accordingly.

[0173] In the contact device 1C of the present embodiment, the protruding block 5C is arranged at a position different from the protruding block 5 in the first embodiment. The protruding block 5C is arranged on the partition wall 13 (see Figure 2 and Fig.11 )superior.

[0174] The protrusion block 5C includes the first protrusion 51 and the peripheral edge portion 1320 of the first protrusion 51. The peripheral edge portion 1320 also serves as a configuration of the partition wall 13. The peripheral edge portion 1320 corresponds to a portion provided in a region around the first protrusion 51.

[0175] The first protrusion 51 protrudes forward from the front surface 132 of the partition wall 13. That is, the direction in which the first protrusion 51 protrudes is different from the direction (upward direction) in which the body B1 is inserted into the housing 6. In other words, the first protrusion 51 protrudes in a direction intersecting the direction (upward direction) in which the body B1 is inserted into the housing 6. The first protrusion 51 is hemispherical and convex forward.

[0176] The housing 6 has a side plate 62, and the side plate 62 has a through hole 610 into which the first protrusion 51 is inserted. That is, the through hole 610 is provided to penetrate the side plate 62 in the front-rear direction. The through hole 610 is a circular hole.

[0177] The protrusion block 5C is arranged to contact at least one of the inner surface 60b of the housing 6 or the inner side surface 611 of the through hole 610. More specifically, the inner surface 60b of the housing 6 includes the rear surface 622 of the side plate 62, and the first protrusion 51 of the protrusion block 5C is arranged to contact the corner 623 corresponding to the boundary between the rear surface 622 and the inner side surface 611. The corner 623 includes an end of the rear surface 622 and an end of the inner side surface 611.

[0178] In addition, the protrusion block 5C is in line contact with the housing 6. More specifically, the first protrusion 51 of the protrusion block 5C is in line contact with the housing 6. In addition, the first protrusion 51 and the housing 6 are in contact with each other in an annular region. That is, in the first protrusion 51, the region where the contact pressure is generated with the housing 6 is annular. At the first protrusion 51, the contact pressure with the housing 6 is generated along the corner 623.

[0179] The first protrusion 51 protrudes from the body B1 along one axial direction (third axis A3), and the area of ​​the first protrusion 51 in a cross section orthogonal to the one axial direction decreases monotonically toward the front end (front side end) of the first protrusion 51. In this configuration, when the housing 6 is mounted on the body B1, the first protrusion 51 is easily inserted into the through hole 610. In addition, in this configuration, when the housing 6 is deformed due to an increase in the internal pressure of the housing 6, it is easier to form a gap between the first protrusion 51 and the inner side surface 611 of the through hole 610.

[0180] In the reflow step, the increase in the internal pressure of the housing 6 causes the housing 6 to move or deform, thereby forming a gap between the housing 6 and the first protrusion 51 just enough for the gas to pass, which allows the gas to escape. This can suppress the increase in the internal pressure of the housing 6.

[0181] In addition, a through hole 610 is provided in the side plate 62 of the housing 6, and the first protrusion 51 is inserted into the through hole 610. The side plate 62 and the side plate 64 (see Figure 4 ) each has the largest area among the top plate 61 and the side plates 62 to 65 of the housing 6, and is therefore easily deformed due to an increase in the internal pressure of the housing 6. Thus, when the through hole 610 is provided in the side plate 62 or the side plate 64, a gap just large enough for gas to pass through is easily formed between the housing 6 and the first protrusion 51.

[0182] As in the first embodiment, the sealing step for sealing the housing 6 may be performed after the reflow step.

[0183] (Third Embodiment)

[0184] Reference Fig.12, a contact device 1D of the third embodiment will be described. The description of the same components as those in the contact device 1C of the second embodiment may be omitted accordingly. Note that the configurations described in the first and second embodiments and their modifications are applicable to the third embodiment accordingly.

[0185] The contact device 1D of the present embodiment includes a protrusion block 5D instead of the protrusion block 5C. The protrusion block 5D is arranged on the partition wall 13 of the body B1. The protrusion block 5D includes a first protrusion 51 and a second groove 55.

[0186] The first protrusion 51 is a separate member from the body B1. The first protrusion 51 is formed of an adhesive. That is, a cured product of the adhesive is the first protrusion 51. The first protrusion 51 closes the rear portion (rear end portion) of the through hole 610.

[0187] The second groove 55 is a depression formed in the body B1 . The second groove 55 is annular in a front view. The second groove 55 surrounds the first protrusion 51 .

[0188] For example, the first protrusion 51 is formed by the following method. First, the body B1 and the shell 6 are molded separately. Then, the shell 6 is attached to the body B1. As a result, a portion of the front surface 132 of the partition wall 13 of the body B1 is exposed to the outside through the through hole 610. In the body B1, this portion exposed through the through hole 610 is surrounded by the second groove 55. Next, an adhesive is injected into the through hole 610. The adhesive cures to form the first protrusion 51. As a result, the rear portion (rear end portion) of the through hole 610 is closed with the first protrusion 51. In addition, the second groove 55 is provided around the portion of the body B1 exposed through the through hole 610, thereby reducing the possibility of the adhesive flowing around the second groove 55. When the first protrusion 51 has been formed, part of the adhesive may flow into the second groove 55.

[0189] The case 6 is attached to the body B1 and then the first protrusion 51 is formed, so it is possible to avoid the first protrusion 51 interfering with the attachment of the case 6 to the body B1.

[0190] In the reflow step, the first protrusion 51 is peeled off from the bonding surface due to heat. For example, the contact area between the first protrusion 51 and the housing 6 is smaller than the contact area between the first protrusion 51 and the body B1, and therefore, the first protrusion 51 is peeled off from the housing 6. Thus, a gap is formed between the first protrusion 51 and the housing 6. The gap allows the gas expanded in the housing 6 to escape. Thus, the increase in the internal pressure of the housing 6 can be suppressed.

[0191] As in the first embodiment, the sealing step for sealing the housing 6 may be performed after the reflow step. For example, the adhesive may be re-injected into the through hole 610 in the sealing step.

[0192] (Fourth Embodiment)

[0193] Reference Fig.13 , a contact device 1E of a fourth embodiment will be described. The description of the same components as those in the contact device 1C of the second embodiment may be omitted accordingly. Note that the configurations described in the first to third embodiments and their modifications are applicable to the fourth embodiment accordingly.

[0194] In the contact device 1E of the present embodiment, the first protrusion 51 of the protrusion block 5E has the same shape as that in the second embodiment. In the contact device 1E of the present embodiment, the configuration of the first protrusion 51 is different from that in the second embodiment. The first protrusion 51 includes a front end 51a and a base end 51b.

[0195] The base end 51b protrudes forward from the front surface 132 of the partition wall 13. The base end 51b is in the shape of a truncated cone. The base end 51b is integrally formed with the partition wall 13. A gap G2 is formed along the third axis A3 direction between the front surface 513 of the base end 51b and the inner surface 60b of the housing 6 (the rear surface 622 of the side plate 62).

[0196] The front end 51a protrudes forward from the front surface of the base end 51b. The front end 51a is inserted into the through hole 610. The front end 51a is a hemispherical shape that is convex forward. The front end 51a is formed by an adhesive. In other words, the cured product of the adhesive is the front end 51a. The front end 51a closes the rear portion (rear end portion) of the through hole 610. The front end 51a is arranged to contact with the corner 623, which corresponds to the boundary between the rear surface 622 of the side plate 62 and the inner side surface 611 of the through hole 610.

[0197] The front end 51a is formed, for example, by the following method. First, the body B1 and the shell 6 are molded separately. The base end 51b is formed integrally with the partition wall 13 of the body B1. Then, the shell 6 is attached to the body B1. Thus, the base end 51b is exposed through the through hole 610. Then, an adhesive is injected into the through hole 610. The adhesive is cured to form the front end 51a. Thus, the rear portion (rear end portion) of the through hole 610 is closed with the front end 51a.

[0198] The case 6 is attached to the body B1 , and then, the front end 51 a is formed, and thus it is possible to avoid the front end 51 a interfering with the attachment of the case 6 to the body B1 .

[0199] In the reflow step, the front end 51a is peeled off from the bonding surface due to heat. For example, the contact area between the front end 51a and the housing 6 is smaller than the contact area between the front end 51a and the base end 51b, and therefore, the front end 51a is peeled off from the housing 6. This forms a gap between the front end 51a and the housing 6. The gap allows the gas expanded in the housing 6 to escape. Thus, the increase in the internal pressure of the housing 6 can be suppressed.

[0200] As in the first embodiment, the sealing step for sealing the housing 6 may be performed after the reflow step. For example, the adhesive may be re-injected into the through hole 610 in the sealing step.

[0201] A second groove 55 may be provided around the base end 51b (see Fig.12 ).

[0202] In the third embodiment, the entire first protrusion 51 is an independent member from the body B1, and in the fourth embodiment, a portion of the first protrusion 51 is an independent member from the body B1. That is, in one aspect, at least a portion of the protrusion block 5E is an independent member from the body B1.

[0203] In the third embodiment, the entire first protrusion 51 is formed of an adhesive, and in the fourth embodiment, a portion of the first protrusion 51 is formed of an adhesive. That is, in one aspect, at least a portion of the protrusion block 5E is formed of an adhesive.

[0204] (Fifth to Eighth Embodiments)

[0205] The contact devices according to the fifth to eighth embodiments will be described below. The contact devices according to the fifth to eighth embodiments are different from the contact device 1 according to the first embodiment in that each of the contact devices according to the fifth to eighth embodiments does not include the first protrusion 51 inserted into the through hole 610 of the housing 6. It is to be noted that the fifth to eighth embodiments will be described assuming that the through hole 610 is provided in the top plate 61 (wall member) of the housing 6 in the same manner as in the first embodiment, but the through hole 610 may be provided in the side plate 62 of the housing 6 (see Fig.10 ). In addition, the configurations described in the first to fourth embodiments and their modified examples are applicable to the fifth to eighth embodiments accordingly.

[0206] (Fifth Embodiment)

[0207] Reference Fig.14, the contact device 1F of the fifth embodiment will be described. The description of the same components as those of the contact device 1 of the first embodiment may be omitted accordingly. For example, the configuration of the fixed contact 231, the first terminal 41, the moving contact 271, and the second terminal 42 (see Figure 2 ) have the same configuration as those of the contact device 1 of the first embodiment.

[0208] like Fig.14 As shown, the contact device 1F of this embodiment includes a body B1, a fixed contact 231 (see Figure 2 ), the first terminal 41 (see Figure 2 ), moving contact 271 (see Figure 2 ), the second terminal 42 (see Figure 2 ) and the housing 6. The body B1 has one surface (upper surface 3240). The one surface includes: a flat central region R1; a peripheral region R2 surrounding the central region R1. The first terminal 41 is electrically connected to the fixed contact 231. The first terminal 41 extends from the outer surface of the body B1 (lower surface 120: see Figure 2 ) is exposed. The moving contact 271 contacts or breaks contact with the fixed contact 231. The second terminal 42 is electrically connected to the moving contact 271. The second terminal 42 is exposed from the outer surface of the body B1 (lower surface 120: see Figure 2 ) is exposed. The housing 6 has an outer surface 60a and an inner surface 60b. The housing 6 accommodates at least a portion of the body B1, the fixed contact 231, and the moving contact 271 in an internal space located on the inner side relative to the inner surface 60b. The housing 6 has a through hole 610 for exposing the central region R1. The peripheral region R2 contacts the inner surface 60b of the housing 6.

[0209] With this configuration, when the contact device 1F is heated in, for example, a reflow step, the gas expanding inside the housing 6 can be allowed to escape through the through hole 610. This can suppress an increase in the internal pressure of the housing 6. Thus, the possibility that the internal pressure of the housing 6 increases and the housing 6 is damaged can be reduced. In addition, the possibility that the damage to the housing 6 may impair the dustproof performance of the contact device 1F can also be reduced.

[0210] In addition, the peripheral region R2 of the body B1 is in contact with the inner surface 60 b of the housing 6 , thereby reducing the possibility that foreign matter may enter the interior of the housing 6 through the through hole 610 .

[0211] The configuration of this embodiment will be described in more detail below.

[0212] In this embodiment, the surface of the body B1 contacts the inner surface 60b of the case 6 at the periphery of the through hole 610. More specifically, the upper surface 3240 of the second extension portion 324 of the coil bobbin 32 of the body B1 contacts the lower surface 612 of the top plate 61 of the case 6.

[0213] The upper surface 3240 of the second extension portion 324 is a flat surface. The lower surface 612 of the top plate 61 is a flat surface. The upper surface 3240 and the lower surface 612 are in surface contact with each other. In the upper surface 3240 (one surface), the area on the inner side relative to the inner edge of the through hole 610 when viewed from above is the central area R1. The central area R1 is a circular area.

[0214] The contact area (i.e., the peripheral area R2) between the surface (upper surface 3240) of the body B1 and the inner surface 60b (lower surface 612) of the housing 6 surrounds the central axis X1 of the through hole 610. More specifically, the peripheral area R2 is an annular area surrounding the central axis X1. In the peripheral area R2, contact pressure is generated between the surface (upper surface 3240) of the body B1 and the inner surface 60b (lower surface 612) of the housing 6.

[0215] In the peripheral region R2, the contact surface of the inner surface 60b of the shell 6 is annular surrounding the through hole 610. That is, in the peripheral region R2, the contact surface of the inner surface 60b of the shell 6 has a shape that makes the through hole 610 seamless. The shape that makes the through hole 610 seamless is a ring that is continuous in the direction surrounding the through hole 610. The ring used in this article can be, for example, a circle or a polygon. The ring used in this article is a shape formed by connecting a first end of a line and a second end on the opposite side of the line relative to the first end to each other in a state where the parts of the line do not intersect each other when viewed in one direction.

[0216] At the periphery of the through hole 610 , the body B1 is in contact with the housing 6 but is not bonded to the housing 6 , so when the housing 6 moves or deforms, the body B1 and the housing 6 can be out of contact.

[0217] For example, heating the contact device 1F in the reflow step may cause the internal gas of the housing 6 to expand, and therefore, may increase the internal pressure of the housing 6. The internal pressure causes the housing 6 to move or deform, thereby forming a gap between the housing 6 and the body B1, which allows the gas to escape. This can suppress the increase in the internal pressure of the housing 6.

[0218] In addition, the minimum width W1 of the width of the contact area between the body B1 and the housing 6 is preferably greater than or equal to 0.3 mm. This can reduce the possibility of foreign matter entering the interior of the housing 6 through the through hole 610.

[0219] Similar to the contact device 1 of the first embodiment, the contact device 1F of the present embodiment includes a body B1, a fixed contact 231, a first terminal 41, a moving contact 271, a second terminal 42, and a housing 6. The first terminal 41 is electrically connected to the fixed contact 231. The first terminal 41 is exposed from the outer surface of the body B1. The moving contact 271 is in contact with or out of contact with the fixed contact 231. The second terminal 42 is electrically connected to the moving contact 271. The second terminal 42 is exposed from the outer surface of the body B1. The housing 6 has an outer surface 60a and an inner surface 60b. The housing 6 accommodates at least a portion of the body B1, the fixed contact 231, and the moving contact 271 in an internal space located on the inner side relative to the inner surface 60b. The housing 6 has a through hole 610. The through hole 610 has an inner side surface 611. The surface (upper surface 3240) of the body B1 contacts at least one of the inner surface 60b of the housing 6 or the inner side surface 611 of the through hole 610 at at least one of the peripheral portion of the through hole 610 or the interior of the through hole 610. In addition, the contact area between the surface (upper surface 3240) of the body B1 and at least one of the inner surface 60b of the housing 6 or the inner side surface 611 of the through hole 610 exists in a manner surrounding the central axis X1 of the through hole 610. This can suppress the increase in the internal pressure of the housing 6.

[0220] (Sixth Embodiment)

[0221] Reference Fig.15 , a contact device 1G according to a sixth embodiment will be described. The description of the same components as those in the contact device 1F according to the fifth embodiment may be omitted accordingly.

[0222] The contact device 1G of this embodiment is different from the fifth embodiment in that the housing 6 further includes a tubular protrusion 68 facing the body B1. The tubular protrusion 68 protrudes from, for example, the lower surface 612 of the top plate 61. The tubular protrusion 68 is tubular (for example, cylindrical).

[0223] The tubular protrusion 68 has an inner side surface included in the inner side surface 611 of the through hole 610. Thus, the tubular protrusion 68 has a relatively small radius, whereby when the internal pressure of the housing 6 increases, the housing 6 is easily deformed and the gas inside the housing 6 is easily allowed to escape. It is to be noted that the tubular protrusion 68 may be arranged to be separated from the through hole 610 formed in the top plate 61 in such a manner as to surround the through hole 610.

[0224] The tubular protrusion 68 has a lower surface 680 that contacts the surface of the body B1. More specifically, the lower surface 680 of the tubular protrusion 68 contacts the upper surface 3240 of the second extension 324. The contact area between the surface of the body B1 (upper surface 3240) and the inner surface 60b of the housing 6 (lower surface 680) surrounds the central axis X1 of the through hole 610.

[0225] In the peripheral portion of the through hole 610, the body B1 is in contact with the housing 6 but is not joined to the housing 6, so when the housing 6 moves or deforms, the body B1 and the housing 6 can be out of contact. The internal pressure of the housing 6 causes the housing 6 to move or deform, so a gap is formed between the housing 6 and the body B1, which allows the gas inside the housing 6 to escape. This can suppress the increase in the internal pressure of the housing 6.

[0226] The above-mentioned peripheral region R2 is also referred to as the first peripheral region R2. The upper surface 3240 (one surface) of the body B1 includes the central region R1 and the first peripheral region R2, and also includes the second peripheral region R3. The second peripheral region R3 is a region surrounding the first peripheral region R2. The second peripheral region R3 is a circular region. The central region R1, the first peripheral region R2, and the second peripheral region R3 are on the same plane.

[0227] The housing 6 includes a top plate 61 and a tubular protrusion 68. The top plate 61 has a through hole 610. The tubular protrusion 68 protrudes from the top plate 61. The tubular protrusion 68 is in a tubular shape surrounding the through hole 610.

[0228] The tubular protrusion 68 has a front end (lower surface 680) in contact with the first peripheral region R2. There is a gap between the top plate 61 and the second peripheral region R3. Through this configuration, when the internal pressure of the shell 6 increases, the internal gas of the shell 6 passes through the gap formed between the front end (lower surface 680) of the tubular protrusion 68 and the first peripheral region R2 from the space between the top plate 61 and the second peripheral region R3, and then the gas can go out from the shell 6 through the through hole 610. Since there is a gap between the top plate 61 and the second peripheral region R3, the gas can easily go out. In addition, since the tubular protrusion 68 is provided, the possibility of foreign matter entering the space between the top plate 61 and the second peripheral region R3 can be reduced.

[0229] (Seventh Embodiment)

[0230] Reference Fig.16 , a contact device 1H according to a seventh embodiment will be described. The description of the same components as those of the contact device 1F according to the fifth embodiment may be omitted accordingly.

[0231] The contact device 1H of this embodiment is different from the fifth embodiment in that the body B1 further includes a protrusion 56 facing the housing 6. The protrusion 56 protrudes from, for example, the upper surface 3240 of the second extension portion 324. The protrusion 56 is tubular (for example, cylindrical).

[0232] The protrusion 56 has an upper surface 560 in contact with the inner surface 60b of the housing 6. More specifically, the upper surface 560 of the protrusion 56 is in contact with the lower surface 612 of the top plate 61. The contact area between the surface of the body B1 (upper surface 560) and the inner surface 60b (lower surface 612) of the housing 6 surrounds the central axis X1 of the through hole 610.

[0233] The protrusion 56 is arranged at a position where the portion of the top plate 61 adjacent to the through hole 610 contacts. Thus, the protrusion 56 has a small radius, whereby the housing 6 is easily deformed when the internal pressure of the housing 6 increases, and allows the gas inside the housing 6 to easily escape. It is to be noted that the protrusion 56 may be arranged to be separated from the through hole 610 so as to surround the through hole 610 formed in the top plate 61. As shown in FIG. Fig.17 The configuration is an example in which the protrusion 56 is arranged to be separated from the through hole 610 so as to surround the through hole 610 formed in the top plate 61 .

[0234] In the peripheral portion of the through hole 610, the body B1 is in contact with the housing 6 but not bonded to the housing 6, so when the housing 6 moves or deforms, the body B1 and the housing 6 can be out of contact. The internal pressure of the housing 6 causes the housing 6 to move or deform, thereby forming a gap between the housing 6 and the body B1, which allows the gas inside the housing 6 to escape. This can suppress the increase in the internal pressure of the housing 6.

[0235] Thus, the body B1 includes a main body (second extension portion 324) including a central region R1 and a tubular protrusion 56. The protrusion 56 protrudes from the main body and surrounds the central region R1.

[0236] The peripheral region R2 is a region of the tip of the protrusion 56. That is, the peripheral region R2 coincides with the upper surface 560 of the protrusion 56.

[0237] At the tip of the protrusion 56, the contact surface of the inner surface 60b of the housing 6 is annularly shaped to surround the through hole 610. That is, at the tip of the protrusion 56, the contact surface of the inner surface 60b of the housing 6 has a shape that makes the circumference of the through hole 610 seamless.

[0238] In addition, there is a gap between the top plate 61 and the second peripheral region R3 surrounding the first peripheral region R2.

[0239] With the configuration of this embodiment, the gas inside the housing 6 can be allowed to easily escape from the housing 6 in the same manner as the sixth embodiment. In addition, since the protrusion 56 is provided, the possibility of foreign matter entering the space between the top plate 61 and the second peripheral region R3 can be reduced.

[0240] (Eighth Embodiment)

[0241] Reference Fig.17, a contact device 1J of an eighth embodiment will be described. The description of the same components as those in the contact device 1G of the sixth embodiment may be omitted accordingly.

[0242] The contact device 1J of this embodiment is different from the sixth embodiment in that the body B1 further includes a protrusion 56 facing the housing 6. The protrusion 56 protrudes from, for example, the upper surface 3240 of the second extension portion 324. The protrusion 56 is tubular (for example, cylindrical).

[0243] The protrusion 56 is provided separately from the through hole 610 formed in the top plate 61 to surround the through hole 610. In addition, the protrusion 56 surrounds the tubular protrusion 68. That is, the outer shape of the tubular protrusion 68 is smaller than the inner diameter of the protrusion 56.

[0244] The body B1 has a surface in contact with the inner surface 60b of the housing 6. More specifically, Fig.17 , the upper surface 3240 of the second extension portion 324 of the body B1 contacts the lower surface 680 of the tubular protrusion 68 of the shell 6.

[0245] exist Fig.17 The middle protrusion 56 has an upper surface 560 separated from the lower surface 612 of the top plate 61. It should be noted that Fig.18 and Fig.19 As shown, upper surface 560 may be in contact with lower surface 612 .

[0246] In addition, Fig.17 , the protrusion 56 may have an inner side surface 561 separated from the outer side surface 681 of the tubular protrusion 68. However, the inner side surface 561 may be in contact with the outer side surface 681.

[0247] In addition, when any portion of the body B1 contacts the housing 6 , the upper surface 3240 of the second extension portion 324 may be separated from the lower surface 680 of the tubular protrusion 68 .

[0248] In the peripheral portion of the through hole 610, the body B1 is in contact with the housing 6 but not bonded to the housing 6, so when the housing 6 moves or deforms, the body B1 and the housing 6 can be out of contact. The internal pressure of the housing 6 causes the housing 6 to move or deform, thereby forming a gap between the housing 6 and the body B1, which allows the gas inside the housing 6 to escape. This can suppress the increase in the internal pressure of the housing 6.

[0249] Note that Fig.17 The middle protrusion 56 is arranged to surround the tubular protrusion 68 , but conversely, the tubular protrusion 68 may be arranged to surround the protrusion 56 .

[0250] In addition, the body B1 may have a plurality of protrusions 56. The housing 6 may have a plurality of tubular protrusions 68. The protrusions 56 and the tubular protrusions 68 may be arranged alternately. For example, the protrusion 56 may be arranged around the tubular protrusion 68, and another tubular protrusion 68 (hereinafter referred to as an outer protrusion) may be arranged around the protrusion 56. In addition, another protrusion 56 may be arranged around the outer protrusion.

[0251] Thus, in the present embodiment, the housing 6 includes a top plate 61 and a tubular protrusion 68. The top plate 61 has a through hole 610. The tubular protrusion 68 protrudes from the top plate 61 and surrounds the through hole 610. The body B1 includes a main body (second extension 324), the main body includes a central region R1 and a protrusion 56, the protrusion 56 is tubular and surrounds the central region R1. The protrusion 56 protrudes from the main body. The peripheral region R2 is an area of ​​the surface of the main body. More specifically, the peripheral region R2 is an area of ​​the main body between the protrusion 56 and the central region R1. The peripheral region R2 contacts the front end (lower surface 680) of the tubular protrusion 68.

[0252] (First Modification of the Eighth Embodiment)

[0253] Reference Fig.18 A contact device 1K according to a first modified example of the eighth embodiment will be described. In the following description, the eighth embodiment described above may be referred to as "basic example 8".

[0254] In the contact device 1K of the first modification, the upper surface 560 of the protrusion 56 contacts the lower surface 612 of the top plate 61. The lower surface 680 of the tubular protrusion 68 is separated from the upper surface 3240 of the second extension portion 324 of the body B1. The other structures are the same as those of the basic example 8.

[0255] That is, in the first modification, the housing 6 includes a top plate 61 and a tubular protrusion 68. The top plate 61 has a through hole 610. The tubular protrusion 68 protrudes from the top plate 61 and surrounds the through hole 610. The body B1 includes a main body (second extension 324), the main body includes a central region R1 and a protrusion 56, the protrusion 56 is tubular and surrounds the central region R1. The protrusion 56 protrudes from the main body. The peripheral region R2 is the region of the front end (upper surface 560) of the protrusion 56. The peripheral region R2 contacts the top plate 61.

[0256] (Second Modification of Eighth Embodiment)

[0257] Reference Fig.19 , a contact device 1L according to a second modified example of the eighth embodiment will be described.

[0258] In the contact device 1L of the second modified example, the upper surface 560 of the protrusion 56 contacts the lower surface 612 of the top plate 61. The other structures are the same as those of the basic example 8. Thus, the lower surface 680 of the tubular protrusion 68 contacts the upper surface 3240 of the second extension portion 324 of the body B1.

[0259] That is, in the second modified example, the housing 6 includes a top plate 61 and a tubular protrusion 68. The top plate 61 has a through hole 610. The tubular protrusion 68 protrudes from the top plate 61 and surrounds the through hole 610. The body B1 includes a main body (second extension 324), which includes a central region R1 and a protrusion 56, which is tubular and surrounds the central region R1. The protrusion 56 protrudes from the main body. The peripheral region R2 includes: an area of ​​the surface of the main body, which area of ​​the surface of the main body contacts the front end (lower surface 680) of the tubular protrusion 68; and an area of ​​the front end (upper surface 560) of the protrusion 56, which area of ​​the front end of the protrusion 56 contacts the top plate 61.

[0260] (Ninth and Tenth Embodiments)

[0261] In the following description, a ninth embodiment and a tenth embodiment will be described. The ninth embodiment and the tenth embodiment are both embodiments related to a method for manufacturing a contact device.

[0262] The sixth embodiment (see Fig.15 ) Similarly, the tubular protrusion 68 of the contact device of each of the ninth and tenth embodiments protrudes from the top plate 61, and in the upper surface 3240 of the body B1, the central region R1 facing the through hole 610 and the first peripheral region R2 around the central region R1 are flat. Thus, most of the configurations of the contact device of each of the ninth and tenth embodiments are common to the configuration of the contact device 1G of the sixth embodiment.

[0263] Note that the configurations described in the first to eighth embodiments (including their modifications) are applicable to the ninth and tenth embodiments accordingly. For example, the housing 6 does not necessarily include the tubular protrusion 68 (see Fig.24 and Fig.25 ). In addition, for example, the body B1 may have a protrusion 56 protruding from the main body (the second extension portion 324) (see Fig.17 ).

[0264] (Ninth Embodiment)

[0265] A contact device 1M according to a ninth embodiment will be described. Fig.23 ) The description of the same components as those of the contact device 1G according to the sixth embodiment may be omitted accordingly.

[0266] First, for comparison with the ninth embodiment, Fig. 20 and Fig.21 An example of a method for manufacturing the contact device 1G according to the sixth embodiment will be described.

[0267] The manufacturing method of the contact device 1G includes a molding step. Fig. 20 As shown, the molding step is a step of pouring a molding material, which is a material of the housing 6, into a gap between a first mold 91 and a second mold 92 to mold the housing 6. The molding material is, for example, a synthetic resin. The first mold 91 is arranged on the outer surface 60a side of the housing 6, and the second mold 92 is arranged on the inner surface 60b side of the housing 6.

[0268] Inside the through hole 610 of the housing 6, the joint surface between the first mold 91 and the second mold 92 (the area where the first mold 91 and the second mold 92 face each other) is located at the lower end of the through hole 610. That is, the joint surface is on the same plane as the lower surface 680 of the tubular protrusion 68.

[0269] The first mold 91 and the second mold 92 are preferably in contact with each other at the bonding surface. However, a gap may actually be formed between the first mold 91 and the second mold 92.

[0270] The burr 7 may be formed on the joint surface between the first mold 91 and the second mold 92. That is, the molding material (synthetic resin) may flow into the gap between the first mold 91 and the second mold 92 and may solidify, thereby forming the burr 7. As described above, the joint surface is located at the lower end of the through hole 610. When the burr 7 is formed at the lower end of the through hole 610, the burr 7 is sandwiched between the housing 6 and the body B1, and a gap may be formed between the housing 6 and the body B1, as shown in FIG. Fig.21 More specifically, the burr 7 is sandwiched between the lower surface 680 of the tubular protrusion 68 and the upper surface 3240 of the body (second extension 324), and a gap may be formed between the lower surface 680 and the upper surface 3240. This may impair the sealing performance of the housing 6, and foreign matter may enter the interior of the housing 6.

[0271] Next, we will refer to Fig. 22 and Fig.23 A contact device 1M according to a ninth embodiment and a method for manufacturing the contact device 1M will be described.

[0272] The housing 6 of the contact device 1M further includes an inner protrusion 69. The inner protrusion 69 protrudes from the inner side surface 611 of the through hole 610 toward the center of the through hole 610. More specifically, the inner protrusion 69 is arranged near the lower end of the through hole 610. When viewed in the direction facing the central region R1, the inner protrusion 69 is annular. In other words, when viewed from above, the inner protrusion 69 is annular. More specifically, the inner protrusion 69 is cylindrical. Since the inner protrusion 69 is arranged, the inner diameter of the through hole 610 decreases near the lower end.

[0273] In addition, the position where the inner protrusion 69 is arranged is a position corresponding to the inner side surface of the tubular protrusion 68. That is, the inner protrusion 69 protrudes from the inner side surface of the tubular protrusion 68 toward the center of the through hole 610.

[0274] The inner protrusion 69 has an upper end located between the outer surface 60a of the housing 6 (the upper surface of the top plate 61) and the lower surface 680 of the tubular protrusion 68. The inner protrusion 69 has a lower end on the same plane as the lower surface 680 of the tubular protrusion 68.

[0275] The manufacturing method of the contact device 1M includes a molding step. Fig. 22 As shown, the molding step is a step of pouring a molding material, which is a material of the housing 6, into a gap between a first mold 91 and a second mold 92 to mold the housing 6. The molding material is, for example, a synthetic resin. The first mold 91 is arranged on the outer surface 60a side of the housing 6, and the second mold 92 is arranged on the inner surface 60b side of the housing 6.

[0276] Inside the through hole 610 of the housing 6, the bonding surface between the first mold 91 and the second mold 92 (the area where the first mold 91 and the second mold 92 face each other) is located on the boundary portion of the through hole 610 between the area where the inner protrusion 69 is not arranged (i.e., the area above the inner protrusion 69) and the area inside the inner protrusion 69. That is, the bonding surface is on the same plane as the upper end of the inner protrusion 69.

[0277] In the present embodiment, the housing 6 includes the inner protrusion 69, and therefore, the joint surface between the first mold 91 and the second mold 92 can be arranged at a position separated from the lower end of the through hole 610. Even when the burr 7 is formed on the joint surface, the burr 7 is formed to be separated from the lower end of the through hole 610. This can reduce the possibility that the burr 7 is sandwiched between the housing 6 and the body B1, and thus a gap can be formed between the housing 6 and the body B1.

[0278] Thus, this embodiment can reduce the possibility that foreign matter enters the interior of the housing 6 through the gap between the housing 6 and the body B1.

[0279] Note that the length of the burr 7 is shorter than 1 / 2 of the inner diameter of the inner protrusion 69. Therefore, in order to further reduce the possibility that the front end of the burr 7 reaches the lower end of the through hole 610, the length of the inner protrusion 69 in the up-down direction (along the first axis A1 direction) can be made longer than 1 / 2 of the inner diameter of the inner protrusion 69.

[0280] It should be noted that the burr 7 is not an essential configuration of the contact device 1M.

[0281] (First Modification of Ninth Embodiment)

[0282] In the first variant, the housing 6 does not include the tubular protrusion 68. Fig.24 The inner protrusion 69 protrudes from the inner side surface 611 of the through hole 610 of the top plate 61 of the housing 6. In addition, the upper end of the inner protrusion 69 is located between the upper surface and the lower surface 612 of the top plate 61 (that is, between the outer surface 60a and the inner surface 60b of the housing 6), and the lower end of the inner protrusion 69 is on the same plane as the lower surface 612 of the top plate 61.

[0283] Inside the through hole 610 , the bonding surface between the first mold 91 and the second mold 92 is located on the boundary portion of the through hole 610 between an area where no inner protrusion 69 is arranged (i.e., an area above the inner protrusion 69 ) and an area inside the inner protrusion 69 .

[0284] (Second Modification of Ninth Embodiment)

[0285] In the second variant, the housing 6 does not include the tubular protrusion 68. Fig.25 As shown. The inner protrusion 69 protrudes from the inner side surface 611 of the through hole 610 of the top plate 61 of the housing 6. In addition, the upper end of the inner protrusion 69 is on the same plane as the upper surface of the top plate 61, and the lower end of the inner protrusion 69 is located between the upper surface and the lower surface 612 of the top plate 61 (that is, between the outer surface 60a and the inner surface 60b of the housing 6).

[0286] Inside the through hole 610 , the bonding surface between the first mold 91 and the second mold 92 is located on the boundary between the area of ​​the through hole 610 where no inner protrusion 69 is arranged (ie, the area below the inner protrusion 69 ) and the area inside the inner protrusion 69 .

[0287] It should be noted that in the second modification, the upper end of the inner protrusion 69 may be located between the upper surface and the lower surface 612 of the top plate 61 (i.e., between the outer surface 60a and the outer surface 60b of the housing 6). In this case, inside the through hole 610, the bonding surface between the first mold 91 and the second mold 92 is located on the boundary between the region of the through hole 610 where the inner protrusion 69 is not arranged (i.e., the region above or below the inner protrusion 69) and the region inside the inner protrusion 69.

[0288] (Third Modification of Ninth Embodiment)

[0289] When the housing 6 includes the tubular protrusion 68 , the upper end of the inner protrusion 69 may be located on the same plane as the upper surface of the top plate 61 , and the lower end of the inner protrusion 69 may be located between the upper surface of the top plate 61 and the lower surface 680 of the tubular protrusion 68 .

[0290] In addition, when the housing 6 includes the tubular protrusion 68 , the upper and lower ends of the inner protrusion 69 may be located between the upper surface of the top plate 61 and the lower surface 680 of the tubular protrusion 68 .

[0291] (Tenth Embodiment)

[0292] Reference Fig.26 , a contact device 1N according to a tenth embodiment will be described. The description of the same components as those of the contact device 1M according to the ninth embodiment may be omitted accordingly.

[0293] The contact device 1N includes a tubular protrusion 68, and the tubular protrusion 68 includes a first tubular portion 68a and a second tubular portion 68b. The first tubular portion 68a and the second tubular portion 68b are both tubular. More specifically, the first tubular portion 68a and the second tubular portion 68b are both cylindrical.

[0294] The first tubular portion 68a protrudes from the top plate 61 and surrounds the through hole 610. The second tubular portion 68b protrudes from the front end (lower end) of the first tubular portion 68a and surrounds the through hole 610. The inner diameter of the second tubular portion 68b is smaller than the inner diameter of the first tubular portion 68a. That is, the inner diameter of the through hole 610 decreases near the lower end.

[0295] Inside the through hole 610 of the housing 6, the joint surface between the first mold 91 and the second mold 92 is located on the boundary between the inner area of ​​the first tubular portion 68a and the inner area of ​​the second tubular portion 68b. In other words, the joint surface is on the same plane as the lower end of the first tubular portion 68a.

[0296] In the present embodiment, the tubular protrusion 68 includes a first tubular portion 68a and a second tubular portion 68b, and therefore, the joint surface between the first mold 91 and the second mold 92 can be arranged at a position separated from the lower end of the through hole 610. Even when the burr 7 is formed on the joint surface, the burr 7 is formed to be separated from the lower end of the through hole 610. This can reduce the possibility that the burr 7 is sandwiched between the housing 6 and the body B1 and thereby forms a gap between the housing 6 and the body B1.

[0297] (Summarize)

[0298] From the above-mentioned embodiments and the like, the following aspects are disclosed.

[0299] The contact device (1F to 1H, 1J to 1N) of the first aspect includes a body (B1), a fixed contact (231), a first terminal (41), a moving contact (271), a second terminal (42) and a shell (6). The body (B1) has a surface (upper surface 3240). The one surface includes a flat central area (R1) and a peripheral area (R2) surrounding the central area (R1). The first terminal (41) is electrically connected to the fixed contact (231). The first terminal (41) is exposed from the outer surface of the body (B1). The moving contact (271) is configured to contact or disengage from the fixed contact (231). The second terminal (42) is electrically connected to the moving contact (271). The second terminal (42) is exposed from the outer surface of the body (B1). The shell (6) has an outer surface (60a) and an inner surface (60b). The housing (6) accommodates at least a portion of the body (B1), the fixed contact (231) and the moving contact (271) in an internal space located on the inner side relative to the inner surface (60b). The housing (6) has a through hole (610) for exposing the central area (R1). The peripheral area (R2) contacts the inner surface (60b) of the housing (6).

[0300] With this structure, when the contact device (1F to 1H, 1J to 1N) is heated in, for example, a reflow step, the gas expanding inside the housing (6) is allowed to escape through the through hole (610). This can suppress the increase in the internal pressure of the housing (6). In addition, since the peripheral area (R2) of the body (B1) is in contact with the inner surface (60b) of the housing (6), the possibility of foreign matter entering the interior of the housing (6) through the through hole (610) can be reduced.

[0301] In the contact device (1F to 1H, 1J to 1N) of the second aspect related to the first aspect, in the peripheral region (R2), the contact surface that contacts the inner surface (60b) of the housing (6) has a ring shape surrounding the through hole (610).

[0302] This configuration can further reduce the possibility of foreign matter entering the interior of the housing (6) through the through hole (610).

[0303] In the contact device (1G, 1J to 1N) of the third aspect related to the first aspect or the second aspect, the peripheral area (R2) is a first peripheral area (R2). One surface (upper surface 3240) also includes a second peripheral area (R3) surrounding the first peripheral area (R2). The housing (6) includes a top plate (61) (wall member) and a tubular tubular protrusion (68). The top plate (61) has a through hole (610). The tubular protrusion (68) protrudes from the top plate (61) and surrounds the through hole (610). The tubular protrusion (68) has a front end (lower surface 680) in contact with the first peripheral area (R2). There is a gap between the top plate (61) and the second peripheral area (R3).

[0304] With this configuration, the presence of a gap between the top plate (61) and the second peripheral region (R3) easily allows gas to escape from the housing (6).

[0305] In the contact device (1H, 1J to 1L) of the fourth aspect related to any one of the first to third aspects, the body (B1) includes a main body (second extension 324) and a tubular protrusion (56). The body has a central region (R1). The protrusion (56) protrudes from the body and surrounds the central region (R1). The peripheral region (R2) is the region at the front end of the protrusion (56). At the front end of the protrusion (56), the contact surface that contacts the inner surface (60b) of the housing (6) has a ring shape surrounding the through hole (610).

[0306] This configuration can further reduce the possibility of foreign matter entering the interior of the housing (6) through the through hole (610).

[0307] In a contact device (1J, 1K) of a fifth aspect related to the first aspect or the second aspect, the housing (6) includes a top plate (61) (wall member) and a tubular protrusion (68). The top plate (61) has a through hole (610). The tubular protrusion (68) protrudes from the top plate (61) and surrounds the through hole (610). The body (B1) includes a main body (second extension 324) and a tubular protrusion (56). The main body includes a central area (R1). The protrusion (56) protrudes from the main body and surrounds the central area (R1). The peripheral area (R2) is an area on the surface of the main body and contacts the front end (lower surface 680) of the tubular protrusion (68), or is an area of ​​the front end of the protrusion (56) and contacts the top plate (61).

[0308] This configuration can further reduce the possibility of foreign matter entering the interior of the housing (6) through the through hole (610).

[0309] The contact device (1L) of the sixth aspect relating to the first aspect or the second aspect, the housing (6) includes a top plate (61) (wall member) and a tubular protrusion (68). The top plate (61) has a through hole (610). The tubular protrusion (68) protrudes from the top plate (61) and surrounds the through hole (610). The body (B1) includes a main body (second extension 324) and a tubular protrusion (56). The main body includes a central area (R1). The protrusion (56) protrudes from the main body and surrounds the central area (R1). The peripheral area (R2) includes: an area on the surface of the main body, the area on the surface of the main body is in contact with the front end (lower surface 680) of the tubular protrusion (68); and an area on the front end of the protrusion (56), the area on the front end of the protrusion (56) is in contact with the top plate (61).

[0310] This configuration can further reduce the possibility of foreign matter entering the interior of the housing (6) through the through hole (610).

[0311] In the contact device (1J to 1L) of a seventh aspect related to the fifth aspect or the sixth aspect, the tubular protrusion (68) has an outer shape smaller than an inner diameter of the protrusion (56).

[0312] This configuration can further reduce the possibility of foreign matter entering the interior of the housing (6) through the through hole (610).

[0313] In the contact device (1M) of the eighth aspect related to any one of the first to seventh aspects, the housing (6) includes an inner protrusion (69). The inner protrusion (69) protrudes from the inner side surface (611) of the through hole (610) toward the center of the through hole (610). When viewed in a direction facing the central region (R1), the inner protrusion (69) has a ring shape.

[0314] With this configuration, even if the burr (7) is formed in the manufacturing step, the possibility that the burr (7) is caught between the case (6) and the body (B1) and thus a gap is formed between the case (6) and the body (B1) can be reduced.

[0315] In the contact device (1M) of the ninth aspect related to any one of the third aspect, the fifth aspect to the seventh aspect, the housing (6) includes an inner protrusion (69). The inner protrusion (69) protrudes from the inner side of the tubular protrusion (68) toward the center of the through hole (610). When viewed in a direction facing the central region (R1), the inner protrusion (69) has a ring shape.

[0316] With this configuration, even if the burr (7) is formed in the manufacturing step, the possibility that the burr (7) is caught between the case (6) and the body (B1) and thus a gap is formed between the case (6) and the body (B1) can be reduced.

[0317] In the contact device (1N) of the tenth aspect related to any one of the third aspect, the fifth aspect to the seventh aspect, the tubular protrusion (68) includes a tubular first tubular portion (68a) and a tubular second tubular portion (68b). The first tubular portion (68a) protrudes from the top plate (61) and surrounds the through hole (610). The second tubular portion (68b) protrudes from the front end of the first tubular portion (68a) and surrounds the through hole (610). The inner diameter of the second tubular portion (68b) is smaller than the inner diameter of the first tubular portion (68a).

[0318] With this configuration, even if the burr (7) is formed in the manufacturing step, the possibility that the burr (7) is caught between the case (6) and the body (B1) and thus a gap is formed between the case (6) and the body (B1) can be reduced.

[0319] The manufacturing method of the contact device (1M) of the eleventh aspect is a method for manufacturing the contact device (1M) of the eighth aspect, the method comprising a molding step. The molding step comprises pouring a molding material, which is a material of a housing (6), into a gap between a first mold (91) and a second mold (92) to mold the housing (6). The first mold (91) is arranged on the outer surface (60a) side of the housing (6). The second mold (92) is arranged on the inner surface (60b) side of the housing (6). Inside the through hole (610), the joint surface between the first mold (91) and the second mold (92) is located at the boundary between the area of ​​the through hole (610) where no inner protrusion (69) is arranged and the area on the inner side of the inner protrusion (69).

[0320] With this configuration, even if the burr (7) is formed in the manufacturing step, the possibility that the burr (7) is caught between the case (6) and the body (B1) and thus a gap is formed between the case (6) and the body (B1) can be reduced.

[0321] The contact device (1, 1A to 1E) of the twelfth aspect comprises a body (B1), a protrusion block (5, 5a to 5E), a fixed contact (231), a first terminal (41), a moving contact (271), a second terminal (42) and a housing (6). The protrusion block (5, 5a to 5E) is provided for the body (B1). The first terminal (41) is electrically connected to the fixed contact (231). The first terminal (41) is exposed from the outer surface of the body (B1). The moving contact (271) is configured to contact or disengage from the fixed contact (231). The second terminal (42) is electrically connected to the moving contact (271). The second terminal (42) is exposed from the outer surface of the body (B1). The housing (6) has an outer surface (60a) and an inner surface (60b). The housing (6) accommodates at least a portion of the body (B1), the fixed contact (231), and the moving contact (271) in an internal space located on the inner side relative to the inner surface (60b). The housing (6) has a through hole (610). The through hole (610) has an inner side surface (611). At least a portion of the protrusion block (5, 5A to 5E) is inserted into the through hole (610). The protrusion block (5, 5A to 5E) is arranged to contact at least one of the inner surface (60b) of the housing (6) or the inner side surface (611) of the through hole (610).

[0322] With this structure, when the contact device (1, 1A to 1E) is heated in, for example, a reflow step, the gas expanding inside the housing (6) is allowed to escape through the gap between the protruding block (5, 5A to 5E) and the housing (6). This can suppress an increase in the internal pressure of the housing (6).

[0323] In the contact device (1, 1A, 1B) of the thirteenth aspect related to the twelfth aspect, the protrusion block (5, 5A, 5B) includes a first protrusion (51), a first groove (52) and a peripheral wall portion (53). The first protrusion (51) is surrounded by the peripheral wall portion (53). The first groove (52) is located between the first protrusion (51) and the peripheral wall portion (53).

[0324] With this configuration, the first groove (52) is provided, so that even if foreign matter enters the internal space of the housing (6), the foreign matter is unlikely to reach the fixed contact (231) and the moving contact (271) arranged in the internal space.

[0325] In the contact device (1, 1A, 1B) of a fourteenth aspect related to the thirteenth aspect, the housing (6) has a second protrusion (67) inserted into the first groove (52).

[0326] With this configuration, foreign matter is less likely to reach the fixed contact (231) and the moving contact (271) and the like arranged in the internal space.

[0327] In the contact device (1, 1A, 1B) of the fifteenth aspect related to the fourteenth aspect, the housing (6) is arranged so that the second protrusion (67) contacts the inner surface of the first groove (52).

[0328] This structure enhances the dust-proof performance of the contact device (1, 1A, 1B).

[0329] In the contact device (1, 1A, 1B) of the sixteenth aspect related to any one of the thirteenth to fifteenth aspects, the peripheral wall portion (53) is arranged to contact the inner surface (60b) of the housing (6).

[0330] This structure enhances the dust-proof performance of the contact device (1, 1A, 1B).

[0331] In the contact device (1A, 1B) of the seventeenth aspect related to any one of the thirteenth to sixteenth aspects, the protrusion block (5A, 5B) further includes a small protrusion (54, 54B). The small protrusion (54, 54B) protrudes from the surface of the peripheral wall portion (53) facing the inner surface (60b) of the housing (6).

[0332] With this structure, the height of the peripheral wall portion (53) can be lowered by the height of the small protrusions (54, 54B), so the amount of resin or the like forming the protrusion blocks (5, 5A, 5B) can be reduced.

[0333] In the contact device (1A, 1B) of the eighteenth aspect related to the seventeenth aspect, the small protrusion (54, 54B) is arranged to contact the inner surface (60b) of the housing (6).

[0334] This structure enhances the dust-proof performance of the contact device (1A, 1B).

[0335] In the contact device (1A) of the nineteenth aspect related to the seventeenth aspect or the eighteenth aspect, the small protrusion (54) is one of a plurality of small protrusions (54), and the protrusion block (5A) includes a plurality of small protrusions (54). The plurality of small protrusions (54) are arranged separately from each other.

[0336] With this configuration, it is possible to allow the gas expanding inside the housing (6) to escape through the gaps between the plurality of small protrusions (54).

[0337] In the contact device (1B) of the twentieth aspect of the seventeenth aspect or the eighteenth aspect, the small protrusion (54B) has a ring shape.

[0338] This structure enhances the dust-proof performance of the contact device (1B).

[0339] In the contact device (1B to 1E) of the twenty-first aspect related to any one of the twelfth to twentieth aspects, the protruding blocks (5B to 5E) are in line contact with the housing (6).

[0340] With this structure, when the internal pressure of the housing (6) increases, a gap is easily formed between the housing (6) and the body (B1).

[0341] In the contact device (1) of the 22nd aspect related to any one of the 12th to 20th aspects, the protrusion block (5) is in surface contact with the housing (6).

[0342] This structure enhances the dust-proof performance of the contact device (1).

[0343] In the contact device (1B, 1C, 1E) of the twenty-third aspect related to the twenty-first aspect, the protrusion block (5B, 5C, 5E) is in annular ground contact with the housing (6).

[0344] This structure enhances the dust-proof performance of the contact device (1B, 1C, 1E).

[0345] In the contact device (1D) of the twenty-fourth aspect related to any one of the twelfth to twenty-third aspects, the protrusion block (5D) includes a first protrusion (51). The body (B1) includes a second groove (55) surrounding the first protrusion (51).

[0346] With this configuration, even if foreign matter or adhesive enters the internal space of the housing (6), the foreign matter or adhesive is unlikely to reach the fixed contacts (231) and the moving contacts (271) arranged in the internal space.

[0347] In the contact device (1, 1A to 1E) of the 25th aspect related to any one of the 12th to 24th aspects, the protrusion block (5, 5A to 5E) includes a first protrusion (51). The first protrusion (51) protrudes from the body (B1). The first protrusion (51) has a cross-sectional area that decreases monotonically toward the front end of the first protrusion (51).

[0348] With this configuration, the first protrusion (51) is easily inserted into the through hole (610).

[0349] In the contact device (1, 1A to 1C) of the twenty-sixth aspect related to any one of the twelfth to the twenty-fifth aspects, the protruding block (5, 5A to 5C) is integrally formed with the body (B1).

[0350] With this configuration, the labor and time for providing the protruding blocks (5, 5A to 5C) can be reduced.

[0351] In the contact device (1D, 1E) of the twenty-seventh aspect related to any one of the twelfth to the twenty-fifth aspects, at least a part of the protrusion block (5D, 5E) is a member independent of the body (B1).

[0352] With this configuration, at least a portion of the protruding blocks (5D, 5E) can be formed after the housing (6) is attached to the housing (B1).

[0353] In the contact device (1D, 1E) of a twenty-eighth aspect related to the twenty-seventh aspect, at least a portion of the protruding block (5D, 5E) is formed of an adhesive.

[0354] With this structure, the protruding blocks (5D, 5E) can be easily formed.

[0355] In the contact device (1C to 1E) according to the 29th aspect related to any one of the 12th to 28th aspects, the protrusion block (5C to 5E) includes a first protrusion (51). The first protrusion (51) protrudes in a direction different from the direction in which the body (B1) is inserted into the housing (6).

[0356] With this structure, when the internal pressure of the housing (6) increases, a gap between the housing (6) and the body (B1) is easily formed.

[0357] In the contact device (1, 1A to 1E) of the thirtieth aspect relating to any one of the twelfth to the twenty-ninth aspects, the front end surface (511) of the insertion through hole (610) of the protrusion block (5, 5a to 5E) is located at a recessed position relative to the outer surface (60a) of the shell (6).

[0358] With this configuration, when the sealing material is filled into the through hole (610), the sealing material is less likely to overflow the through hole (610).

[0359] Configurations other than the first aspect or the twelfth aspect are not configurations essential to the contact device ( 1 , 1A to 1H, 1J to 1N), and thus may be omitted accordingly.

[0360] Description of Reference Numerals

[0361] 1. 1A~1H, 1J~1N contact device

[0362] 5. 5A~5E protrusions

[0363] 6 Shell

[0364] 41 First terminal

[0365] 42 Second terminal

[0366] 51 The first protrusion

[0367] 52 First Slot

[0368] 53 Wall

[0369] 54, 54B small protrusion

[0370] 55 Second slot

[0371] 56 protrusions

[0372] 60a outer surface

[0373] 60b inner surface

[0374] 61 Top plate (wall component)

[0375] 67 Second protrusion

[0376] 68 tubular protrusions

[0377] 68a First tubular portion

[0378] 68b Second tubular portion

[0379] 69 inner protrusion

[0380] 231 fixed contact

[0381] 271 moving contacts

[0382] 324 second extension part (main body)

[0383] 511 front end

[0384] 610 through hole

[0385] 611 inner side

[0386] 680 lower surface (front end)

[0387] 3240 upper surface (one surface)

[0388] B1 body

[0389] R1 Central Area

[0390] R2 first peripheral area

[0391] R3 Second peripheral area

Claims

1. A contact device, comprising: a body having a surface including a flat central region and a peripheral region surrounding the central region; Fixed contacts; a first terminal electrically connected to the fixed contact, the first terminal being exposed from an outer surface of the body; a moving contact configured to be brought into contact with or out of contact with the fixed contact; a second terminal electrically connected to the moving contact, the second terminal being exposed from the outer surface of the body; and a housing having an outer surface and an inner surface, wherein the housing accommodates at least a portion of the body, the fixed contact, and the moving contact in an inner space located inside the inner surface, The housing has a through hole for exposing the central area. The peripheral region is in contact with the inner surface of the housing.

2. The contact device according to claim 1, wherein In the peripheral region, a contact surface that contacts the inner surface of the housing has a ring shape surrounding the through hole.

3. The contact device according to claim 1 or 2, wherein The peripheral region is a first peripheral region, The one surface further comprises a second peripheral region surrounding the first peripheral region, The housing includes a wall member having the through hole; and a tubular protrusion that protrudes from the wall member, surrounds the through hole and is tubular, the tubular protrusion having a front end in contact with the first peripheral area, and There is a gap between the wall member and the second peripheral region.

4. The contact device according to any one of claims 1 to 3, wherein The body includes a body including the central region; and a protrusion which protrudes from the body, surrounds the central region and is tubular, The peripheral region is the region of the front end of the protrusion, and At the front end of the protrusion, a contact surface that contacts the inner surface of the housing has a ring shape surrounding the through hole.

5. The contact device according to claim 1 or 2, wherein The housing includes a wall member having the through hole; and a tubular protrusion, which protrudes from the wall member, surrounds the through hole and is tubular, and the body comprises: a main body including the central region; and a protrusion which protrudes from the body, surrounds the central region and is tubular, and the peripheral region is an area of ​​the surface of the body and in contact with the front end of the tubular protrusion, or The area of ​​the front end of the protrusion is in contact with the wall member.

6. The contact device according to claim 1 or 2, wherein The housing includes a wall member having the through hole; and a tubular protrusion, which protrudes from the wall member, surrounds the through hole and is tubular, and the body comprises: a main body including the central region; and a protrusion that protrudes from the body, surrounds the central region and is tubular, and the peripheral region includes an area of ​​the surface of the body that contacts the front end of the tubular protrusion; and A region of the front end of the protrusion, the region of the front end of the protrusion is in contact with the wall member.

7. The contact device according to claim 5 or 6, wherein The tubular protrusion has an outer shape that is smaller than an inner diameter of the protrusion.

8. The contact device according to any one of claims 1 to 7, wherein The housing includes an inner protrusion protruding from an inner side of the through hole toward a center of the through hole, and When viewed in a direction facing the central area, the inner protrusion has a ring shape.

9. The contact device according to any one of claims 3, 5 to 7, wherein The housing includes an inner protrusion protruding from an inner side of the tubular protrusion toward a center of the through hole, and When viewed in a direction facing the central area, the inner protrusion has a ring shape.

10. The contact device according to any one of claims 3, 5 to 7, wherein The tubular protrusion comprises a first tubular portion that protrudes from the wall member, surrounds the through hole, and is tubular; and a second tubular portion that protrudes from a front end of the first tubular portion, surrounds the through hole, and is tubular, and The inner diameter of the second tubular portion is smaller than the inner diameter of the first tubular portion.

11. A method for manufacturing the contact device according to claim 8, comprising a molding step of pouring a molding material as a material of the housing into a gap between a first mold and a second mold to mold the housing, The first mold is arranged on the outer surface side of the housing, The second mold is disposed on the inner surface side of the housing, Inside the through hole, a joint surface between the first mold and the second mold is located at a boundary portion between a region of the through hole where the inner protrusion is not arranged and a region inside the inner protrusion.

12. A contact device, comprising: ontology; a protrusion block provided for the body; Fixed contacts; a first terminal electrically connected to the fixed contact, the first terminal being exposed from an outer surface of the body; a moving contact configured to be brought into contact with or out of contact with the fixed contact; a second terminal electrically connected to the moving contact, the second terminal being exposed from the outer surface of the body; and a housing having an outer surface and an inner surface, wherein the housing accommodates at least a portion of the body, the fixed contact, and the moving contact in an inner space located inside the inner surface, The housing has a through hole, and the through hole has an inner side surface. At least a portion of the protruding block is inserted into the through hole, The protruding block is arranged to contact at least one of the inner surface of the housing or the inner side surface of the through hole.

13. The contact device according to claim 12, wherein The protruding block includes first protrusion; first slot; and The surrounding wall, The first protrusion is surrounded by the peripheral wall portion, and The first groove is located between the first protrusion and the peripheral wall portion.

14. The contact device according to claim 13, wherein The housing has a second protrusion inserted into the first groove.

15. The contact device according to claim 14, wherein The housing is arranged so that the second protrusion contacts an inner surface of the first groove.

16. The contact device according to any one of claims 13 to 15, wherein The peripheral wall portion is arranged to be in contact with the inner surface of the housing.

17. The contact device according to any one of claims 13 to 16, wherein The protrusion block also includes small protrusions, and The small protrusion protrudes from a surface of the peripheral wall portion facing the inner surface of the housing.

18. The contact device according to claim 17, wherein The small protrusion is disposed in contact with the inner surface of the housing.

19. The contact device according to claim 17 or 18, wherein the small protrusion is one of a plurality of small protrusions, The protrusion block includes the plurality of small protrusions, and The plurality of small protrusions are arranged apart from each other.

20. The contact device according to claim 17 or 18, wherein the small protrusion has a ring shape.

21. The contact device according to any one of claims 12 to 20, wherein the protruding block is in line contact with the housing.

22. The contact device according to any one of claims 12 to 20, wherein the protruding block is in contact with the housing surface.

23. The contact device according to claim 21, wherein The protrusion block is in annular ground line contact with the shell.

24. The contact device according to claim 12, wherein The protrusion block includes a first protrusion, and The body includes a second groove surrounding the first protrusion.

25. The contact device according to any one of claims 12 to 24, wherein the protrusion block comprises a first protrusion, The first protrusion protrudes from the body, and The first protrusion has a cross-sectional area that decreases monotonically toward a front end of the first protrusion.

26. The contact device according to any one of claims 12 to 25, wherein the protruding block is formed integrally with the body.

27. The contact device according to any one of claims 12 to 25, wherein at least a portion of the protruding block is a separate member from the body.

28. The contact device according to claim 27, wherein At least a portion of the protruding block is formed of an adhesive.

29. The contact device according to claim 12, wherein The protrusion block includes a first protrusion, The direction in which the first protrusion protrudes is different from the direction in which the body is inserted into the housing.

30. The contact device according to claim 12, wherein A front end surface of the protruding block inserted into the through hole is located at a position recessed relative to the outer surface of the housing.

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