JP6268896B2 - Contact - Google Patents

Description

  The present invention relates to a contact used for a contact, for example, a sensor or a nozzle sensor.

  Conventionally, as a contactor used for a sensor etc., there are some which were indicated in JP, 2009-128218, A (patent documents 1), for example. The contact includes a deforming portion formed in a substantially zigzag shape and contact portions provided at both ends of the deforming portion.

JP 2009-128218 A

  However, in the conventional contact, electricity flows through the deformed portion formed in a substantially zigzag shape, but the electric resistance of the deformed portion is large and it is difficult for electricity to flow. For this reason, there existed a problem that desired electroconductivity was not securable.

  In view of the above-described problems, an object of the present invention is to provide a contact having desired conductivity and high contact reliability.

  The contact of the present invention includes a bellows body having conductive terminals at both ends, and a pair of first and second elastic movable arm portions extending from both bases of the conductive terminals to both sides, and a pair of the first The free end portions of the first and second elastic movable arm portions are arranged so as to be able to contact and separate from each other in response to pressing in the axial direction of the conductive terminal.

  According to the present invention, when the conductive terminal is pressed in the axial direction, the free ends of the first and second elastic movable arm portions come into contact with each other, and the contact resistance can be reduced. A contactor having high contact reliability is obtained.

  As another embodiment according to the present invention, contact portions that face each other are formed at the free ends of the pair of first and second elastic movable arm portions, and the first elastic movable arm portion The contact portion and the contact portion of the second elastic movable arm portion may be in contact with each other in the axial direction of the conductive terminal.

  According to the present embodiment, when the conductive terminal is pressed in the axial direction, the contact portion of the first elastic movable arm portion and the contact portion of the second elastic movable arm portion are contacted in the axial direction of the conductive terminal. Therefore, it can be operated with a small operating force.

  In another embodiment according to the present invention, the contact portions of the free ends of the pair of first and second elastic movable arm portions each have a contact surface facing each other, and the conductive When the bellows body is compressed by pressing a terminal, the contact surface of the first elastic movable arm portion and the contact surface of the second elastic movable arm portion may be in surface contact. .

  According to the present embodiment, when the bellows body is compressed by pressing the conductive terminal, the contact surface of the first elastic movable arm portion and the contact surface of the second elastic movable arm portion are in surface contact. A contact with high contact reliability can be obtained.

  As another embodiment according to the present invention, the pair of first and second elastic movable arms extend linearly along the bellows body, and the pair of first and second elastic movable arms. The contact portions of the free end portion of the portion respectively have engaging claw portions facing each other, and the engagement of the first elastic movable arm portion is in a free state where the conductive terminal is not pressed. It is good also as a structure which a nail | claw part and the said engagement claw part of a said 2nd elastic movable arm part mutually engage and contact.

  According to the present embodiment, the engaging claw portion of the first elastic movable arm portion and the engaging claw portion of the second elastic movable arm portion are engaged and contacted in a free state where the conductive terminal is not pressed. For this reason, there is an advantage that a contact having a different operating principle from the above-described embodiment can be obtained, and the degree of freedom in design is widened.

  As another embodiment according to the present invention, the pair of first and second elastic movable arm portions may have a bellows shape.

  According to this embodiment, there exists an advantage that the freedom degree of design becomes wide.

  As another embodiment according to the present invention, the pair of first and second elastic movable arms extend linearly along the bellows body, and the pair of first and second elastic movable arms. A contact portion is formed on at least one of the free ends facing each other, and when the bellows body is compressed by pressing the conductive terminal, the first elastic movable arm portion and the first It is good also as a structure which 2 elastic movable arm parts contact via the said contact part.

  According to the present embodiment, when the bellows body is compressed by pressing the conductive terminal, the first elastic movable arm portion and the second elastic movable arm portion are in pressure contact with each other through the contact portion, so that electric resistance is reduced. In addition, desired contact can be ensured and a contact with high contact reliability can be obtained.

  As another embodiment according to the present invention, the bellows body may include a linear intermediate portion and an arc portion connecting the intermediate portions adjacent in parallel.

  According to the present embodiment, an easily designed contact can be obtained.

  As another embodiment according to the present invention, the connection position of the bellows body and the conductive terminal may be arranged on the axis of the conductive terminal.

  According to this embodiment, when the connection position of the bellows body and the conductive terminal is disposed on the axis of the conductive terminal, it can be operated with a small operating force, and a contactor with a long life can be obtained.

  The sensor according to the present invention includes the contact.

  According to the sensor of the present invention, a sensor having a desired continuity and a contact having high contact reliability can be obtained.

  The nozzle sensor of the present invention includes the contact.

  According to the nozzle sensor of the present invention, a nozzle sensor having a desired continuity and a contact having high contact reliability can be obtained.

(A) is a perspective view which shows 1st Embodiment of the contactor of this invention, (B) is a front view which shows before operation | movement, (C) is a front view which shows the time of operation | movement. (A) is front sectional drawing which shows before operation | movement of the state which accommodated the contact shown in FIG. 1 in a housing, (B) is front sectional drawing which shows the time of operation | movement. (A) is a perspective view which shows 2nd Embodiment of the contactor of this invention, (B) is a front view which shows before operation | movement, (C) is a front view which shows the time of operation | movement. (A) is front sectional drawing which shows before operation | movement of the state which accommodated the contactor shown in FIG. 3 in a housing, (B) is front sectional drawing which shows the time of operation | movement. (A) is a perspective view showing a third embodiment of the contact of the present invention, (B) is a front view showing before operation, (C) is a front view showing a stationary state after operation, (D). These are front views which show the time of operation. 5A is a front cross-sectional view showing a state before operation in a state where the contact shown in FIG. 5 is housed in the housing, FIG. 5B is a front cross-sectional view showing a stationary state after operation, and FIG. It is front sectional drawing which shows time.

  Hereinafter, the contact of the present invention will be described in detail based on the illustrated embodiment.

(First embodiment)
As shown in FIG. 1, the contact 10 according to the first embodiment of the present invention includes a bellows body 20, first and second conductive terminals 30 and 40 provided at both ends of the bellows body 20, and a first conductive terminal. 30 and a pair of first elastic movable arm portions 50 extending from the base portion of the second conductive terminal 40 to both sides, and a pair of second elastic movable arm portions 60 extending from the base portion of the second conductive terminal 40 to both sides. It is formed by a casting method. Moreover, the contact 10 is accommodated in the housing 70 as shown in FIG.

  The first conductive terminal 30 and the second conductive terminal 40 have the same axis center on the same line, orthogonal to the axis, and in the middle between the first conductive terminal 30 and the second conductive terminal 40. It has a line-symmetric positional relationship with the positioned intermediate line as the axis of symmetry.

  The bellows body 20 is formed by a linear intermediate portion 23 and an arc portion 24 connecting the adjacent intermediate portions 23 and 23. The intermediate part 23 is arranged in a direction orthogonal to the axial direction of the first and second conductive terminals 30 and 40. The bellows body 20 is formed so that the cross-sectional aspect ratio is 1.5 or more, preferably 2 or more. The aspect ratio of the cross section means the ratio of the thickness dimension to the height dimension in the cross section of the bellows body 20.

  The first conductive terminal 30 has a substantially T-shape in front. On the axial center of the first conductive terminal 30, a contact 31 is formed at the tip, and one end 21 of the bellows body 20 is integrally connected to the base. Further, a wide portion 32 is formed at the base portion, and a pair of first elastic movable arm portions 50, 50 project from both sides of the wide portion 32. The pair of first elastic movable arm portions 50, 50 has a line-symmetric positional relationship with the axis of the first conductive terminal 30 as the axis of symmetry. Note that the width of the wide portion 32 is formed so as to be larger than the width of the bellows body 20, so that the bellows body 20 and the pair of first elastic movable arm portions 50, 50 do not contact each other.

  The first elastic movable arm portion 50 has a bellows shape formed by a linear intermediate portion 53 and an arc portion 54 connecting the intermediate portions 53 and 53 adjacent to each other in parallel, along the bellows body 20. It is extended. The free end portion at the tip of the first elastic movable arm portion 50 is constituted by an intermediate portion 53, and a contact surface 51 as an example of a contact portion is provided on the side facing the second conductive terminal 40.

  The second conductive terminal 40 has the same configuration as the first conductive terminal 30. That is, the second conductive terminal 40 has a substantially T-shape in front, and a contact point 41 is formed at the distal end on the axial center of the second conductive terminal 40, while one end 22 of the bellows body 20 is formed at the base. Are connected together. Further, a wide portion 42 is formed at the base portion, and a pair of second elastic movable arm portions 60 and 60 project from both sides of the wide portion 42. The pair of second elastic movable arm portions 60, 60 has a line-symmetric positional relationship with the axis of the second conductive terminal 40 as the axis of symmetry. The width of the wide portion 42 is formed so as to be larger than the width of the bellows body 20, similar to the first conductive terminal 30, and the bellows body 20 and the pair of second elastic movable arm portions 60, 60 are in contact with each other. It is supposed not to.

  The second elastic movable arm portion 60 has the same configuration as the first elastic movable arm portion 50. That is, it has a bellows shape formed by a linear intermediate portion 63 and a circular arc portion 64 connecting the intermediate portions 63 and 63 adjacent to each other in parallel, and extends along the bellows body 20. The free end portion at the tip of the second elastic movable arm portion 60 is constituted by an intermediate portion 63, and an abutment surface 61 as an example of a contact portion is provided on the side facing the first conductive terminal 30.

  As shown in FIG. 2, the housing 70 has a rectangular parallelepiped shape having a slit 71 that can accommodate the contact 10, and press-fitting holes 72 and 72 are formed in the upper end portion and the lower end portion, respectively. The press-fitting holes 72 and 72 are formed to have dimensions that allow the first and second conductive terminals 30 and 40 to move in the respective axial directions when the contact 10 is accommodated in the housing 70.

  In a state where the contact 10 of the first embodiment is housed in the housing 70, as shown in FIG. 2A, the contact surfaces 51, 51 of the first elastic movable arm portions 50, 50 and the second elastic movable arm portion. A gap is formed between the contact surfaces 61, 61 of the 60, 60, and the first elastic movable arm portions 50, 50 and the second elastic movable arm portions 60, 60 are not in contact with each other.

  When the first and second conductive terminals 30 and 40 are press-fitted into the housing 70, the bellows body 20 is compressed, and the wide portion 32 of the first conductive terminal 30 and the wide portion 42 of the second conductive terminal 40 are the housing. Move towards 70. For this reason, when the wide parts 32 and 42 of each conductive terminal move to the axial center direction of the 1st, 2nd conductive terminals 30 and 40, as shown to FIG. , 50 and the contact surfaces 61, 61 of the second elastic movable arm portions 60, 60 are in surface contact with each other in the axial direction of the first and second conductive terminals 30, 40, and are brought into conduction. . As a result, it can be operated with a small operating force.

  In the contact 10 of the first embodiment, the first elastic movable arm portions 50 and 50 and the second elastic movable arm portions 60 and 60 are in surface contact with the respective contact surfaces 51 and 61 in the operating position. The contact resistance can be lowered and stable electrical contact can be obtained. For this reason, the contact 10 with low contact resistance and high contact reliability can be obtained.

  Also, a pair of first and second elastic movable arm portions 50 and 60 project from both sides of the wide portions 32 and 42 of the first and second conductive terminals 30 and 40, and the pair of first and second elastic movable members. The arm portions 50 and 60 have a line-symmetric positional relationship with the axis of the first and second conductive terminals 30 and 40 as the axis of symmetry. Therefore, when the first and second conductive terminals 30 and 40 are respectively press-fitted into the housing 70 and the contact surfaces 51 and 61 are brought into contact with each other, the first and second conductive terminals 30 and 40 are connected to the bellows body 20. It is difficult to apply a force in a direction different from the axial center direction. As a result, even after the first and second elastic movable arm portions 50 and 60 are brought into surface contact and conducted, the expansion and contraction in the axial direction of the first and second conductive terminals 30 and 40 of the bellows body 20 is stably secured. it can.

  In addition, after the contact surfaces 51 and 61 of the first and second elastic movable arm portions 50 and 60 are brought into surface contact and conducted, when the first and second conductive terminals 30 and 40 are further press-fitted into the housing 70, The first and second elastic movable arm portions 50 and 60 are compressed. At this time, since the spring force of the first and second elastic movable arm portions 50 and 60 acts in a direction to prevent the bellows body 20 from being compressed, the first and second elastic movable arm portions 50 and 60 are brought into surface contact and conducted. It is possible to prevent the first and second conductive terminals 30 and 40 from being pushed too much.

(Second Embodiment)
As shown in FIG. 3, the contact 110 according to the second embodiment of the present invention includes a bellows body 20, first and second conductive terminals 30 and 40 provided at both ends of the bellows body 20, and a first conductive terminal. 30 includes a pair of first elastic movable arm portions 120 extending on both sides from the base portion and a pair of second elastic movable arm portions 130 extending on both sides from the base portion of the second conductive terminal 40. It is formed by a casting method. The contact 110 is housed in a housing 70 as shown in FIG. In addition, about the same part as 1st Embodiment, the same reference number is attached | subjected and description is abbreviate | omitted and a different point from 1st Embodiment is demonstrated.

  The first elastic movable arm portion 120 extends linearly along the bellows body 20. A contact portion 121 that protrudes toward the bellows body 20 protrudes from the free end at the tip of the first elastic movable arm portion 120.

  Similar to the first elastic movable arm portion 120, the second elastic movable arm portion 130 extends linearly along the bellows body 20. The second elastic movable arm portion 130 is located slightly inside the first elastic movable arm portion 120 and is arranged so that the axis of the second elastic movable arm portion 130 overlaps the contact portions 121 and 121. ing.

  In the state where the contact 110 of the second embodiment is housed in the housing 70, as shown in FIG. 4A, the first elastic movable arm 120, 120 and the second elastic movable arm 130, 130 are interposed. Has a gap and is not in contact.

  When the first and second conductive terminals 30 and 40 are press-fitted into the housing 70, the bellows body 20 is compressed, and the wide portion 32 of the first conductive terminal 30 and the wide portion 42 of the second conductive terminal 40 are the housing. Move towards 70. By moving the wide portions 32 and 42 of the respective conductive terminals, as shown in FIG. 4B, the contact portions 121 and 121 of the first elastic movable arm portions 120 and 120, the second elastic movable arm portions 130, 130 contacts. Then, due to the protruding shape of the contact portions 121 and 121, the first elastic movable arm portions 120 and 120 and the second elastic movable arm portions 130 and 130 are elastically deformed in a sliding state.

  That is, the contact 110 of the second embodiment has the first and second conductive terminals 30 and 40 by the spring force of the first elastic movable arm portions 120 and 120 and the second elastic movable arm portions 130 and 130 in the operating position. They are always pressed against each other in a direction substantially perpendicular to the axial center direction. For this reason, the 1st elastic movable arm part 120,120 and the 2nd elastic movable arm part 130,130 are always press-contacted, and are conducting. As a result, the contact resistance can be reduced, stable electrical contact can be obtained, and the contact 110 with low contact resistance and high contact reliability can be obtained.

  In addition, a pair of first and second elastic movable arm portions 120 and 130 project from both sides of the wide portions 32 and 42 of the first and second conductive terminals 30 and 40, and the pair of first and second elastic movable members. The arms 120 and 130 have a line-symmetric positional relationship with the axis of the first and second conductive terminals 30 and 40 as the axis of symmetry. Therefore, when the first and second conductive terminals 30 and 40 are respectively press-fitted into the housing 70 and the contact portion 121 of the first elastic movable arm portion 120 and the second elastic movable arm portion 130 are brought into contact with each other, A force in a direction different from the axial direction of the first and second conductive terminals 30 and 40 is not easily applied to the bellows body 20. As a result, even after the first and second elastic movable arm portions 120 and 130 are brought into pressure contact and conducted, the expansion and contraction in the axial direction of the first and second conductive terminals 30 and 40 of the bellows body 20 can be stably secured. .

  The contact portion 121 may be provided on the second elastic movable arm portion 130 or may be provided on both the first elastic movable arm portion 120 and the second elastic movable arm portion 130. That is, the contact part 121 should just be formed in at least any one of the free end parts which the 1st, 2nd elastic movable arm parts 120 and 130 mutually oppose.

(Third embodiment)
As shown in FIG. 5, the contact 210 of the third embodiment of the present invention includes a bellows body 20, first and second conductive terminals 30 and 40 provided at both ends of the bellows body 20, and a first conductive terminal. 30 includes a pair of first elastic movable arm portions 220 extending on both sides from the base portion and a pair of second elastic movable arm portions 230 extending on both sides from the base portion of the second conductive terminal 40. It is formed by a casting method. Further, the contact 210 is housed in the housing 70 as shown in FIG. In addition, about the same part as 1st Embodiment, the same reference number is attached | subjected and description is abbreviate | omitted and a different point from 1st Embodiment is demonstrated.

  The first elastic movable arm portion 220 extends linearly along the bellows body 20, while the free end portion at the tip of the first elastic movable arm portion 220 is inward of an example of a contact portion. A claw-like engagement claw portion 221 that curves toward the top is formed.

  Like the first elastic movable arm portion 220, the second elastic movable arm portion 230 extends linearly along the bellows body 20, and is disposed slightly inside the first elastic movable arm portion 120. . Further, a claw-like engaging claw portion 231 that is curved outward is formed as an example of the contact portion at the free end portion at the tip of the second elastic movable arm portion 230.

  In the state where the contact 210 of the third embodiment is housed in the housing 70, as shown in FIG. 6A, the first elastic movable arm portions 220, 220 and the second elastic movable arm portions 230, 230 are interposed. Has a gap and is not in contact.

  When the first conductive terminal 30 and the second conductive terminal 40 are respectively press-fitted into the housing 70, the bellows body 20 is compressed, and the wide portion 32 of the first conductive terminal 30 and the wide portion 42 of the second conductive terminal 40 are compressed. It moves toward the inside of the housing 70. By moving the wide portions 32 and 42 of the respective conductive terminals, the engaging claws 221 and 221 of the first elastic movable arm portions 220 and 220 and the engaging claws 231 and 231 of the second elastic movable arm portions 230 and 230 are moved. 231 contacts. The first elastic movable arm portions 220 and 220 and the second elastic movable arm portions 230 and 230 are elastically deformed in a sliding state due to the hook shape of the engaging claw portions 221 and 231.

  Further, when the first conductive terminal 30 and the second conductive terminal 40 are press-fitted into the housing 70, as shown in FIG. 6C, the contact between the engaging claws 221 and 231 is released, and the first elastic movable arm is released. The conduction between the portions 220 and 220 and the second elastic movable arm portions 230 and 230 can be cut off.

  Once the first conductive terminal 30 and the second conductive terminal 40 are press-fitted into the housing 70 until the contact between the engaging claws 221 and 231 is released, the contact 10 is then moved to the position shown in FIG. As shown in FIG. 2, in the free state where the first and second conductive terminals 30 and 40 are not pressed, the engaging claws 221 and 231 of the first and second elastic movable arm portions 220 and 230 mesh with each other and contact each other. (Engagement contact state).

  In this engaged contact state, the first elastic movable arm portions 220 and 220 and the second elastic movable arm portions 230 and 230 are returned to the initial state (the state shown in FIG. 6A) by the spring force of the bellows body 20. Since it is pulled in the direction to be engaged, it is always conducted through the engaging claw portions 221 and 231. For this reason, while being able to reduce contact resistance, the stable electrical contact can be obtained, and the contactor 210 with small contact resistance and high contact reliability is obtained.

  Note that the shape of the engaging claw portion 221 is not limited to a claw shape, and can be changed as appropriate according to the design. For example, by appropriately determining the shape of the engaging claw 231, the conductive state shown in FIG. 6B (the state in which the first and second elastic movable arm portions 220 and 230 are brought into engagement and conductive) is shown in FIG. 6 (C), the force required to make the non-conductive state (the state where the contact between the first and second elastic movable arm portions 220 and 230 is released and the conductive state is cut off), and the non-conductive state to the conductive state You can adjust the force necessary to make it.

  In the contact 210 of the third embodiment, a pair of first and second elastic movable arm portions 220 and 230 are provided so as to protrude from both sides of the wide portions 32 and 42 of the first and second conductive terminals 30 and 40. The first and second elastic movable arm portions 220 and 230 have a line-symmetric positional relationship with the axis of the first and second conductive terminals 30 and 40 as the axis of symmetry. Therefore, when the first and second conductive terminals 30 and 40 are respectively press-fitted into the housing 70 and the conduction between the first elastic movable arm portion 220 and the second elastic movable arm portion 230 is cut off, the bellows A force in a direction different from the axial direction of the first and second conductive terminals 30 and 40 is not easily applied to the body 20. As a result, the expansion and contraction in the axial direction of the first and second conductive terminals 30 and 40 of the bellows body 20 can be stably secured even after the conduction between the first and second elastic movable arm portions 220 and 230 is cut off. .

  The contacts 10, 110, and 210 of the first to third embodiments are formed by electroforming, but are not limited thereto. Any other processing method can be selected as long as it is a method capable of forming the contacts 10, 110, 210 of the first to third embodiments, such as press working.

  The length dimensions of the first elastic movable arm portions 50, 120, 220 and the second elastic movable arm portions 60, 130, 230 of the contacts 10, 110, 210 of the first to third embodiments are appropriately determined according to the design. You can choose.

  In the contacts 10, 110, and 210 of the first to third embodiments, the linear intermediate portion 23 and the arc portion 24 connecting the adjacent intermediate portions 23 and 23 form a bellows shape. Not limited to. For example, a curved intermediate portion 23 may be used.

  The housing 70 of the first to third embodiments may be integrally molded or may be divided.

  Of course, the constituent elements of the contacts 10, 110, and 210 of the first to third embodiments may be replaced with each other or added if possible.

  The contact according to the present invention can be used not only as a sensor or a nozzle sensor but also as a connection terminal for a switch, a battery, or the like.

10, 110, 210 Contact 20 Bellows 21 One end 22 Other end 23, 53, 63 Intermediate part 24, 54, 64 Arc part 30 First conductive terminal 31, 41 Contact 32, 42 Wide part 40 Second conductive terminal 50, 120, 220 First elastic movable arm 51, 61 Contact surface 60, 130, 230 Second elastic movable arm 70 Housing 71 Slit 72 Press-fitting hole 121 Contact part 221, 231 Engagement claw part

Claims (7)

A bellows body having conductive terminals at both ends;
A pair of first and second elastic movable arm portions extending from both base portions of the conductive terminals to both sides,
The free ends of the pair of first and second elastic movable arm portions are arranged so as to be able to contact and separate from each other in accordance with the pressing in the axial direction of the conductive terminal ,
Contact portions opposite to each other are formed at the free ends of the pair of first and second elastic movable arm portions,
And the contact portion of the contact portion and the second resilient movable arm portion of the first resilient movable arm portion makes contact with the axial direction of the conductive terminals,
A pair of contacts , wherein the pair of first and second elastic movable arms have a bellows shape . The contact portions of the free ends of the pair of first and second elastic movable arm portions each have contact surfaces facing each other;
Said conductive terminals when the presses to compress the bellows body, and wherein the abutment surface of the abutment surface and the second resilient movable arm portion of the first resilient movable arm portion, you surface contact, The contact according to claim 1. A pair of the first and second elastic movable arm portions linearly extend along the bellows body, and at least free ends of the pair of first and second elastic movable arm portions facing each other. Contact point is formed on either one of them,
Said conductive terminals when the presses to compress the bellows body, the first resilient movable arm portion and the second resilient movable arm portion, you contact via the contact portion, according to claim 1 Contactor. Said bellows body, a middle portion of the linear shape, and a circular arc portion which connects the intermediate portion adjacent to the parallel contactor according to any one of claims 1 to 3. The connection position of the bellows body and said conductive terminals, disposed on the axis of the conductive terminals, the contact according to any one of claims 1 4. A sensor comprising the contact according to any one of claims 1 to 5 . A nozzle sensor provided with the contact according to any one of claims 1 to 5 .

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