CN112309763A - Metal terminal and pressure switch - Google Patents
Metal terminal and pressure switch Download PDFInfo
- Publication number
- CN112309763A CN112309763A CN202010740559.3A CN202010740559A CN112309763A CN 112309763 A CN112309763 A CN 112309763A CN 202010740559 A CN202010740559 A CN 202010740559A CN 112309763 A CN112309763 A CN 112309763A
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- Prior art keywords
- terminal
- caulking
- metal terminal
- metal
- pressure
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- 239000002184 metal Substances 0.000 title claims abstract description 87
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 description 19
- 238000003780 insertion Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 210000000078 claw Anatomy 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Push-Button Switches (AREA)
Abstract
本发明的金属端子以及压力开关缓和确保铆接承接部件的配置空间的难度。第二端子(36)(金属端子)的特征在于，具备：端子主体(361)，其形成为沿第一方向(D11)延伸，一端部(361a)贯通支撑体的壁部并突出；伸出部(362)，其从端子主体(361)中的另一端部(361d)伸出至在与第一方向(D11)交叉的第二方向(D12)上隔离的隔离位置；以及铆接部(363)，其在隔离位置从伸出部(362)沿第一方向(D11)伸出，并且以贯通上述的壁部并突出的前端部(363a)卡定于壁部的外壁面的方式铆接变形。
The metal terminal and the pressure switch of the present invention alleviate the difficulty of securing an arrangement space for the caulking receiving member. The second terminal (36) (metal terminal) is characterized by comprising: a terminal main body (361) formed to extend in the first direction (D11), one end part (361a) penetrating the wall part of the support body and protruding; a portion (362) that protrudes from the other end portion (361d) in the terminal body (361) to an isolation position isolated in a second direction (D12) intersecting with the first direction (D11); and a rivet portion (363) ), which protrudes from the protruding portion (362) in the first direction (D11) at the isolated position, and is riveted and deformed in such a way that the protruding front end portion (363a) that penetrates the above-mentioned wall portion and protrudes is locked to the outer wall surface of the wall portion .
Description
Technical Field
The present invention relates to a metal terminal attached to a wall portion of a support body, and a pressure switch including such a metal terminal.
Background
In devices such as various switches and various sensors, metal terminals are used as connection portions with external parts. (see, for example, patent document 1 or patent document 2.). Such a metal terminal is mostly fixed to a wall portion constituting a support such as a housing so that a portion forming a connection portion protrudes from an outer wall surface. In the metal terminals described in patent documents 1 and 2, the metal terminal is fixed to the wall portion by applying a force from the projecting end side to the root portion of the projecting portion projecting from the outer wall surface to deform the clinch.
Documents of the prior art
Patent document
Patent document 1: japanese examined patent publication (Kokoku) No. 08-001560
Patent document 2: japanese Kokai publication Hei 02-082822
Disclosure of Invention
Problems to be solved by the invention
In the above-described caulking deformation, in many cases, it is necessary to dispose a caulking receiving member that receives a force applied at the time of caulking deformation on one side of the inner wall surface of the wall portion of the support. On the other hand, depending on the arrangement of parts inside the device, it may be difficult to secure a sufficient space for arranging such a caulking receiving member.
The present invention has been made in view of the above problems, and an object thereof is to provide a metal terminal capable of alleviating difficulty in securing an arrangement space for caulking a receiving member, and a pressure switch including such a metal terminal.
Means for solving the problems
In order to solve the above problem, a metal terminal according to the present invention is a metal terminal attached to a wall portion of a support body from a side of a second surface opposite to a first surface so that a part of the metal terminal protrudes from the first surface, the metal terminal including: a terminal body that extends in a first direction connecting the first surface and the second surface of the wall portion, and that has one end portion that penetrates the wall portion from the second surface to the first surface and protrudes from the first surface; a projecting portion projecting from the other end portion of the terminal main body on the opposite side to the one end portion to an isolation position isolated in a second direction intersecting the first direction; and a caulking portion that protrudes from the protruding portion in the first direction at least at the isolation position, and is caulked and deformed so that a tip portion that penetrates the wall portion from the second surface to the first surface and protrudes from the first surface is engaged with the first surface.
According to the metal terminal of the present invention, the caulking portion is provided at the isolation position isolated from the terminal body, and the caulking portion penetrates the wall portion of the support body at the isolation position and the tip end portion is caulked and deformed. Thus, the arrangement space of the caulking receiving member that receives the force applied when caulking deformation is performed can be provided while avoiding the position directly below the terminal body, which may be the arrangement position of a component or the like for conducting electrical conduction to the terminal body. As described above, according to the metal terminal of the present invention, it is possible to alleviate the difficulty in securing the arrangement space of the caulking receiving member.
In the metal terminal according to the present invention, it is preferable that the projecting portions project from the other end portions to a pair of the spaced positions across the other end portion of the terminal main body in the second direction, and the caulking portions project from the projecting portions at least at the pair of the spaced positions.
According to this configuration, since the metal terminal is fixed by the caulking portions at each of the at least one pair of spaced positions across the terminal body in the second direction, the metal terminal can be prevented from being rotationally shaken around an axis intersecting both the first direction and the second direction.
In the metal terminal according to the present invention, it is preferable that the caulking portion extends in a band-plate shape in the first direction with a direction intersecting the second direction as a width direction.
According to this configuration, the rotation of the metal terminal about the axis in the second direction can be suppressed by the band-plate shape in which the direction intersecting the second direction is the width direction in the caulking portion.
In the metal terminal according to the present invention, it is preferable that the distal end portion of the caulking portion is caulked and deformed so as to protrude from the through portion in the first surface in a direction intersecting the second direction.
According to this configuration, the distal end portion of the deformed caulking portion is caulked so as to extend in the direction intersecting the second direction, so that the metal terminal can be prevented from rotating and rattling about the axis in the second direction.
In the metal terminal according to the present invention, it is preferable that the distal end portion of the caulking portion is caulked and deformed so as to be projected in two directions from the through portion in the first surface.
According to this configuration, the fixing strength of the metal terminal to the wall portion can be improved by the tip portion of the caulking portion that is caulked and deformed so as to be cut and protruded.
In this configuration, it is further preferable that the two directions are directions intersecting the second direction.
According to this further preferred configuration, the two directions of the division are set to the directions intersecting the second direction, whereby the metal terminal can be prevented from rotating and rattling about the axis in the second direction.
In the metal terminal according to the present invention, it is preferable that the metal terminal further includes a conductive member mounting portion which is disposed on one side of the other end portion of the terminal main body and to which a conductive member for conducting with the terminal main body is mounted.
According to this configuration, the conducting member can be disposed without interfering with the installation of the disposing space for caulking the receiving member.
In order to solve the above problem, a pressure switch according to the present invention includes: a pressure sensing member which separates the low pressure chamber from the high pressure chamber and is displaced according to pressure variation of the high pressure chamber; a switching member for switching a conduction state according to a displacement of the pressure-sensitive member; and a plurality of metal terminals connected to the switching member, wherein at least one of the plurality of metal terminals is the metal terminal of the present invention.
According to the pressure switch of the present invention, since at least one of the plurality of metal terminals is the metal terminal of the present invention, difficulty in securing an arrangement space for caulking the receiving member can be alleviated in manufacturing the pressure switch.
The effects of the invention are as follows.
According to the metal terminal and the pressure switch of the present invention, since the caulking portion is isolated from the terminal body, difficulty in securing an arrangement space for caulking the receiving member can be alleviated.
Drawings
Fig. 1 is a sectional view showing a pressure switch having a metal terminal according to an embodiment of the present invention.
Fig. 2 is a sectional view showing an operation of the pressure switch shown in fig. 1.
Fig. 3 is an external perspective view showing the lid shown in fig. 1 and 2.
Fig. 4 is a perspective view showing a second terminal which is a metal terminal according to an embodiment of the present invention, and the metal terminal is also shown in fig. 1 to 3.
Fig. 5 is a view showing a state in which the second terminal shown in fig. 4 is attached to the cover of the housing shown in fig. 1 to 3, in a state in which the cover is cut along the line V11-V11 in fig. 3.
Fig. 6 is a view of the second terminal shown in fig. 5 as viewed from the direction of arrow V12 in fig. 5.
In the figure:
1-pressure switch, 2-housing, 3-microswitch, 23-cover (support), 23 a-top (wall), 31, 32-fixed electrode, 33-movable electrode, 34' -first terminal, 35-conducting member, 36-second terminal (metal terminal), 361-terminal body, 361 a-one end, 361D, 363 b-the other end, 362-extension, 363-rivet, 363 a-front end, 364-conducting member mounting, D11-first direction, D12-second direction, D13-width direction, D111-pressurization direction.
Detailed Description
The metal terminal and the pressure switch according to one embodiment of the present invention will be described below. The pressure switch of the present embodiment uses a working medium such as an air conditioner, a cooling/heating device, an automobile, and various control actuators as a pressure fluid to detect the pressure of the fluid, and uses the metal terminal of the present embodiment as one terminal of the pressure switch.
As shown in fig. 1, a pressure switch 1 of the present embodiment includes a case 2 having a box shape as a whole, a micro switch 3 as a switching member provided at an upper portion of the case 2, and a diaphragm assembly 4 fixed to a lower portion of the case 2. The pressure switch 1 further includes an operating member 5 supported by the diaphragm assembly 4 to be movable in the vertical direction, and a transmission member 6 for transmitting the movement of the operating member 5 to the microswitch 3. The pressure switch 1 includes a leaf spring 7 that biases a diaphragm (pressure-sensitive member) 44 of the diaphragm assembly 4 to apply an initial compression force, and an adjustment member 8 that adjusts the biasing force of the leaf spring 7.
The housing 2 includes a metal base 21, a case 22 for holding the base 21 therein, and a lid 23 (support member) attached to close an upper opening of the case 22. The base 21 is integrally formed with a cylindrical portion 21a having a bottom, a flat plate portion 21b extending horizontally outward continuously from the upper end of the cylindrical portion 21a, and a pair of plate portions 21c standing upward from both end edges of the flat plate portion 21 b. The diaphragm assembly 4 is supported inside the cylindrical portion 21a, and the joint member P is connected to the diaphragm assembly 4 through an opening provided in the center of the bottom surface of the cylindrical portion 21 a.
The case 22 is formed in a square tubular shape as a whole, and the base 21 is held by inserting the tubular portion 21a into a circular opening provided in the bottom surface portion 22a thereof. A plurality of locking portions 22c are formed on the side surface portion 22b of the case 22.
Fig. 3 is an external perspective view showing the lid shown in fig. 1 and 2.
The lid 23 is formed of an insulating resin. As also shown in fig. 3, the lid 23 is formed to have a top plate portion 23a (wall portion), an annular portion 23b, and a hanging piece portion 23 c. The top plate 23a is a wall portion to which the microswitch 3 is attached, and the annular portion 23b is a square annular portion inserted into the case 22 along the side surface portion 22 b. The hanging piece portion 23c extends downward from four corners of the annular portion 23b and is in contact with the flat plate portion 21b of the base 21. The annular portion 23b is provided with a locking claw 23d that is locked to the locking portion 22c of the case 22. As shown in fig. 1 and 2, an annular water stop member 23e is provided on the inner surface of the side surface portion 22b of the case 22 so as to be in close contact with the annular portion 23 b.
The microswitch 3 is provided inside the lid 23 of the housing 2, and includes a pair of fixed electrodes 31, 32 provided inside the lid 23 so as to face each other in the up-down direction, and a movable electrode 33 provided movably between the fixed electrodes 31, 32 in the up-down direction. The microswitch 3 includes a pair of first terminals 34, 34' connected to the pair of fixed electrodes 31, 32 and extending to the outside of the lid 23, and a conductive member 35 joined to the movable electrode 33 and formed of a leaf spring. The microswitch 3 includes a second terminal 36 connected to the conductive member 35 and extending to the outside of the lid 23, and an adjustment screw 37 for adjusting the position of the upper fixed electrode 31. The conductive member 35 includes a conductive piece 35a extending from the second terminal 36 and having a distal end to which the movable electrode 33 is fixed, a movable piece 35b extending from the second terminal 36 and having an intermediate portion to which the transmission member 6 is connected, and a pressing piece 35c for biasing the movable electrode 33 toward either of the fixed electrodes 31 and 32. As explained below, the displacement of the diaphragm 44 is transmitted to the movable piece 35b via the transmission member 6, and the movable piece 35b moves in accordance with the displacement. The micro switch 3 detects a low voltage state in which the movable electrode 33 is in contact with the upper fixed electrode 31 and is electrically connected thereto, and a high voltage state in which the movable electrode 33 is in contact with the lower fixed electrode 32 and is electrically connected thereto. The microswitch 3 is configured to switch the on state according to the displacement of the diaphragm 44 in this manner, thereby switching the on and off between the pair of first terminals 34, 34' and the second terminal 36.
The diaphragm assembly 4 includes an upper holding plate 41 and a lower holding plate 42 supported by the cylindrical portion 21a of the base 21, a spacer 43 held between the upper holding plate 41 and the lower holding plate 42, a diaphragm 44, and a bottom plate member 45. The upper holding plate 41 is formed in a disk shape as a whole, and has an insertion hole 41a, and the insertion hole 41a vertically penetrates the center portion of the upper holding plate 41 to vertically guide the working element 5. The lower holding plate 42 is formed in a cylindrical shape as a whole, and is formed to have a stepped portion 42a for holding the gasket 43, the diaphragm 44, and the bottom plate member 45, and a caulking piece 42b extending upward for caulking and fixing the upper holding plate 41. In the diaphragm assembly 4, the spacer 43, the diaphragm 44, and the bottom plate member 45 are sandwiched between the step portions 42a of the upper holding plate 41 and the lower holding plate 42. By caulking the caulking pieces 42b inward, the peripheral edge portions of the diaphragm 44 and the bottom plate member 45 are held between the upper holding plate 41 and the lower holding plate 42.
The diaphragm 44 is formed by laminating a plurality of metal thin plate members to have a circular plate shape as a whole, and has a dome-shaped convex portion 44a which is convex upward in a natural state. The bottom plate member 45 is formed in a dish shape with a central portion bulging downward from a metal plate material in a circular plate shape as a whole, and a through hole 45a for fixing the joint member P is formed in the central portion thereof. The diaphragm 44 and the bottom plate member 45 are joined to each other by welding or the like so as to ensure airtightness and pressure resistance. In the diaphragm assembly 4, a high-pressure chamber 46 is formed by a space enclosed by the diaphragm 44 and the bottom plate member 45, and a high-pressure fluid flows into the high-pressure chamber 46 through the joint member P. A low pressure chamber 47 is formed by a space enclosed by the diaphragm 44, the spacer 43, and the upper holding plate 41, and the low pressure chamber 47 communicates with the internal space of the case 22 through the insertion hole 41a, and has an internal pressure equal to the atmospheric pressure. Therefore, the diaphragm 44 as a pressure-sensitive member is configured to be displaced vertically in accordance with a pressure variation of the high-pressure fluid flowing into the high-pressure chamber 46. Thus, the diaphragm 44 is a member that separates the low pressure chamber 47 and the high pressure chamber 46 and is displaced in accordance with pressure fluctuation of the high pressure chamber 46.
The operation member 5 is formed to have a first shaft portion 51 extending vertically and inserted into the insertion hole 41a of the upper holding plate 41, an enlarged diameter portion 52 having an enlarged diameter in the horizontal direction along the upper surface of the upper holding plate 41, and a second shaft portion 53 extending upward from the enlarged diameter portion 52. The working member 5 is supported such that the first shaft portion 51 is guided by the insertion hole 41a to be movable in the vertical direction, and the lower end of the first shaft portion 51 is disposed so as to be in contact with the center of the convex portion 44a of the diaphragm 44. Therefore, the actuator 5 moves up and down in accordance with the displacement of the diaphragm 44, and the diaphragm 44 is biased toward the high-pressure chamber 46 by the actuator 5 receiving the biasing force of the leaf spring 7, thereby applying an initial compressive force to the diaphragm 44.
The diameter-enlarged portion 52 is provided so that the lower surface thereof can come into contact with the upper surface of the upper holding plate 41, and is provided to restrict the movement of the operation member 5 to the lower side than the contact position. Therefore, the diaphragm 44 is restricted from being displaced to the high pressure chamber 46 side beyond the initial compression state. The upper end of the second shaft portion 53 is chamfered in a spherical shape, and the upper end abuts against a first transmission member 61 of the transmission member 6 described below.
The transmission member 6 includes a first transmission member 61 and a second transmission member 62 formed of a metal plate material, and a shaft member 63 rotatably supporting the first transmission member 61. The first transmission member 61 is disposed above the diaphragm assembly 4 so as to face the plate spring 7, and the second shaft portion 53 of the operating member 5 abuts from below and is connected to the second transmission member 62. The first transmission member 61 is rotatably supported by a shaft member 63 with respect to the base 21. The second transmission member 62 extends upward from the first transmission member 61, and an upper end thereof engages with the movable piece 35b of the conduction member 35 of the microswitch 3.
One end 71 of the leaf spring 7 is fixed to the upright plate portion 21c of the base 21, and the other end 72 is coupled to the adjustment member 8. An insertion hole 73 through which the second shaft portion 53 of the operation member 5 is inserted is provided at a substantially central portion of the leaf spring 7 in a plan view, and a part of an upper surface of the enlarged diameter portion 52 of the operation member 5 abuts against a peripheral lower surface of the insertion hole 73. The adjusting member 8 includes an adjusting screw 81 penetrating the flat plate portion 21b of the base 21, and a slider 82 which is brought into contact with the upper surface of the plate spring 7 and is screwed to the adjusting screw 81 penetrating the plate spring 7. Before the case 22 and the base 21 are assembled, the adjustment screw 81 can be rotated from below the flat plate portion 21b, and the slider 82 is supported in the housing 2 so as to be vertically slidable without being rotated. The slider 82 is configured to move up and down by rotating the adjustment screw 81. Therefore, when the adjustment screw 81 is tightened to move the slider 82 downward, the other end 72 of the leaf spring 7 is lowered, and when the adjustment screw 81 is loosened to move the slider 82 upward, the other end 72 of the leaf spring 7 is raised, thereby adjusting the urging force of the leaf spring 7. The biasing force of the leaf spring 7 is transmitted to the diaphragm 44 via the operating member 5, and the convex portion 44a of the diaphragm 44 is pressed downward to apply an initial compressive force.
The operation of the pressure switch 1 described above will be described with reference to fig. 1 and 2.
First, when the high-pressure chamber 46 is filled with the high-pressure fluid of the pressure exceeding the predetermined value, as shown in fig. 2, the convex portion 44a of the diaphragm 44 presses the operation member 5 upward against the urging force of the plate spring 7. The second transmission member 62 is pressed upward by the operating member 5 via the first transmission member 61, and thereafter the second transmission member 62 presses the movable piece 35b of the conduction member 35 upward. When the deflection of the pressing piece 35c engaged with the movable piece 35b exceeds a certain amount, the conductive piece 35a is reversed. At this time, a downward urging force acts on the conductive piece 35a, and the movable electrode 33 integrally joined to the conductive piece 35a abuts on the fixed electrode 32. As a result, the first terminal 34 'and the second terminal 36 on the front side in the drawing, which are not shown, of the pair of first terminals 34 and 34' are electrically connected to each other, and the first terminal 34 and the second terminal 36 on the back side in the drawing are electrically disconnected from each other. Such an on/off state between the pair of first terminals 34, 34' and the second terminal 36 is detected as a high-voltage state.
Next, when the pressure of the fluid in the high-pressure chamber 46 is lower than a predetermined value, the convex portion 44a of the diaphragm 44 is displaced downward as shown in fig. 1 by the urging force of the leaf spring 7. As a result, the movable piece 35b of the conduction member 35 is lowered via the operating member 5, the first transmission member 61, and the second transmission member 62. When the deflection of the pressing piece 35c engaged with the movable piece 35b exceeds a certain amount, the conductive piece 35a is reversed. At this time, an upward urging force acts on the conductive piece 35a, and the movable electrode 33 integrally joined to the conductive piece 35a abuts on the fixed electrode 31. As a result, the first terminal 34 and the second terminal 36 on the far side in the drawing of the pair of first terminals 34 and 34 'are electrically connected, and the first terminal 34' and the second terminal 36 on the near side in the drawing, which are not shown, are electrically disconnected. Such an on/off state between the pair of first terminals 34, 34' and the second terminal 36 is detected as a low voltage state.
In the present embodiment, the metal terminal according to one embodiment of the present invention is used as the second terminal 36 among the three terminals.
Fig. 4 is a perspective view showing a second terminal which is a metal terminal according to an embodiment of the present invention, and the metal terminal is also shown in fig. 1 to 3. Fig. 5 is a view showing a state in which the second terminal shown in fig. 4 is attached to the cover of the housing shown in fig. 1 to 3, in a state in which the cover is cut along the line V11-V11 in fig. 3. Fig. 6 is a view of the second terminal shown in fig. 5, as viewed from the direction of arrow V12 in fig. 5.
The lid 23 is a resin support constituting the housing 2, and the second terminal 36 is attached to the top plate 23a of the lid 23, which is a wall portion, from one side of an inner wall surface (second surface) on the opposite side so that a part thereof protrudes from an outer wall surface (first surface) thereof. The second terminal 36 is a metal plate-processed part cut out from a single metal plate and bent, and includes a terminal body 361, an extending portion 362, a pair of caulking portions 363, and a conductive member mounting portion 364.
The terminal main body 361 is formed in a substantially rectangular plate shape so as to extend in the first direction D11, and the short side direction of the rectangular plate shape is set as the second direction D12. The one end 361a of the terminal main body 361 penetrates from the inner wall surface to the outer wall surface of the top plate 23a and protrudes from the outer wall surface. One side of the one end 361a of the terminal main body 361 is formed such that a part 361b of each of the pair of long sides is cut and a cross section in the short side direction is substantially C-shaped. A through hole 361c is provided at a substantially center of one side of the one end 361a in the short side direction, and the through hole 361c is engaged with, for example, a concave of a conductive piece provided in a socket contact, not shown, into which the second terminal 36 is inserted, to prevent the second terminal 36 from coming off the socket contact, not shown.
The protruding portion 362 is a portion protruding from the other end 361D of the terminal main body 361 on the side opposite to the one end 361a in the second direction D12, and the second direction D12 is a direction perpendicular to the first direction D11 and is a short-side direction of the terminal main body 361. The extension portion 362 extends from the other end 361d to each of a pair of spaced positions across the other end 361 d. The extension 362 is formed in a rectangular band shape having the first direction D11 as the short side direction and the second direction D12 as the long side direction, and one of the pair of long sides is integrally connected to the other end 361D of the terminal main body 361.
The caulking portion 363 protrudes from the protruding portion 362 in the first direction D11 at the above-described isolation position, and penetrates from the inner wall surface to the outer wall surface of the top plate portion 23 a. In the present embodiment, the isolation positions are a pair of positions corresponding to both end portions of the extension portion 362, and the caulking portions 363 are provided in a pair so as to extend from the extension portion 362 at the pair of isolation positions, respectively. Each of the caulking portions 363 extends in the first direction D11 in a band-like manner with a direction intersecting the second direction D12 as the width direction D13. Specifically, in the substantially H-shaped metal plate, when the extension portion 362 is a portion corresponding to a lateral line of the H-shape and the caulking portion 363 is a portion corresponding to a vertical line of the H-shape, the caulking portion 363 corresponding to the pair of vertical lines is substantially folded at right angles so as to have a substantially C-shape in a cross-sectional view along the first direction D11. Thereby, a pair of caulking portions 363 protruding in a band plate shape from both ends of the protruding portion 362 is formed. In each of the pair of caulking portions 363, the tip portion 363a protruding from the outer wall surface is caulked and deformed so as to be locked to the outer wall surface. As shown in fig. 5 and 6, the caulking deformation is performed so as to extend from the through portion in the outer wall surface of the top plate portion 23a in the width direction D13 intersecting the second direction D12. Specifically, the distal end 363a of the caulking portion 363 is caulked and deformed so as to be cut and projected in two directions from the above-described penetrating portion in the width direction D13.
At this time, a force is applied to the tip end 363a of each caulking portion 363 in the pressing direction D111 downward in the drawing in the first direction D11. A caulking receiving member, not shown, is disposed directly below the other end 363b of the caulking portion 363 located on one side of the back surface of the top plate portion 23a, and a force applied to the tip end 363a is received by the caulking receiving member directly below the other end 363 b. In this way, the other end 363b of the caulking portion 363 is caulked and deformed by applying a force in the pressing direction D111 to the distal end 363a in a state of being supported by the caulking receiving member.
The conductive member attachment portion 364 is a portion that is disposed on one side of the other end portion 361d of the terminal main body 361 and to which the conductive member 35 for conducting with the terminal main body 361 is attached. The conducting member 35 is formed of a single plate spring, and has a shape in which the conducting piece 35a remains in a frame shape and the movable piece 35b is cut in a tongue-like shape. The movable electrode 33 is fixed to the tip of the frame-shaped conductive piece 35a, and the pressing piece 35c shown in fig. 1 and 2 is engaged with the tip of the movable piece 35 b. The opposite side of the conductive member 35 from the aforementioned respective distal ends is folded back in a U shape, and the folded-back portion serves as a mounting piece 35e to be mounted to the conductive member mounting portion 364, as shown in fig. 4 to 6.
The conducting member mounting portion 364 includes a pair of arm portions 364a, a mounting plate 364b, and a pair of locking claws 364 c. The pair of arm portions 364a are portions that protrude from the center of the caulking portion 363 of the both end portions of the protruding portion 362 toward the side opposite to the terminal main body 361 so as to be spaced apart from each other by a distance that the attachment piece 35e of the conductive member 35 can pass through. The mounting plate 364b is a rectangular plate-shaped portion bent at the end portion of the pair of arm portions 364a on the opposite side to the extension portion 362 so as to face the back surface of the top plate portion 23 a. The mounting piece 35e of the conductive member 35 is mounted on the surface of the mounting plate 364b on the side of the terminal main body 361 in an overlapping manner. The pair of locking claws 364c are portions that are folded from the mounting plate 364b so as to face each other, penetrate the mounting piece 35e, and are folded inward to be locked as shown in fig. 5. The conductive member 35 is fixed to the conductive member mounting portion 364 by the locking claw 364 c. Further, the present invention is not limited to this example, and may be a fixing method of fixing the conductive member 35 and the conductive member mounting portion 364 using rivet caulking, spot welding, screwing, or the like instead of the locking claw 364 c.
At this time, the mounting plate 364b of the conducting member mounting portion 364 is disposed to be housed between the pair of caulking portions 363. The above-described caulking deformation of the distal end 363a of the caulking portion 363 is arranged so that the caulking receiving member, not shown, avoids the mounting plate 364b and the conducting member 35.
According to the second terminal 36 (metal terminal) and the pressure switch 1 of the above-described embodiment, the caulking portion 363 is provided at the isolation position from the terminal body 361, and the caulking portion 363 penetrates the top plate portion 23a at the isolation position and the tip portion 363a is caulked and deformed. This makes it possible to provide an arrangement space for the caulking receiving member that receives the force applied during caulking deformation, while avoiding the conductive member 35 located directly below the terminal body 361. As described above, according to the second terminal 36 of the present embodiment, it is possible to alleviate the difficulty in securing the arrangement space of the caulking receiving member.
Here, in the present embodiment, a pair of caulking portions 363 are provided at a pair of spaced positions corresponding to both end portions of the extension portion 362 so as to extend from the extension portion 362. According to this configuration, since the second terminals 36 are fixed by the pair of caulking portions 363, the second terminals 36 can be prevented from rotating and rattling about axes intersecting both the first direction D11 and the second direction D12.
In the present embodiment, the caulking portions 363 extend in a band-like manner in the first direction D11 with the direction intersecting the second direction D12 being the width direction D13. Further, the distal end 363a of the caulking portion 363 is caulked and deformed so as to extend in the width direction D13 intersecting the second direction D12 from the penetrating portion of the top plate portion 23 a. According to this configuration, the width direction D13 of the band-plate-shaped caulking section 363 that penetrates the top plate section 23a and the extending direction of the tip end section 363a of the caulking section 363 after caulking deformation intersect the second direction D12. Such a strip-plate-like shape of the caulking portion 363 interacts with the projecting direction of the tip portion 363a during caulking deformation, and rotational play of the second terminal 36 about the axis in the second direction D12 can be suppressed. In the present embodiment, the rotational play at this time is a play generated in accordance with the vertical movement of the movable piece 35b in the conduction member 35, but the play can be suppressed.
In the present embodiment, the distal end 363a of the caulking portion 363 is caulked and deformed so as to extend from the penetrating portion of the top plate portion 23a in two directions in the width direction D13 intersecting the second direction D12. According to this configuration, the fixing strength of the second terminal 36 can be increased by the caulking deformation by the cutting of the distal end portion 363a of the caulking portion 363, and the cutting direction intersects with the second direction D12, so that the rotational play of the second terminal 36 about the axis in the second direction D12 corresponding to the vertical movement of the movable piece 35b can be suppressed in this respect as well.
In the present embodiment, a conducting member attaching portion 364 for attaching the conducting member 35 is provided, and the conducting member 35 is disposed on the other end portion 361d side of the terminal main body 361. According to this configuration, the conducting member 35 can be disposed without obstructing the installation of the disposing space for caulking the receiving member.
The embodiments described above are merely representative embodiments of the present invention, and the present invention is not limited thereto. That is, various modifications can be made without departing from the scope of the present invention. It is needless to say that such a modification is included in the scope of the present invention as long as the structure of the metal terminal and the pressure switch of the present invention is provided.
For example, in the above-described embodiment, the example of the pressure switch 1 is shown as an example of the pressure switch, and the pressure switch 1 is configured such that the second terminal 36 of the three terminals, the pair of first terminals 34 and 34' and the one second terminal 36, has the caulking portion 363 isolated from the terminal main body 361. However, the pressure switch is not limited to this, and the above-described embodiment can be arbitrarily set for specific ones of the terminals of the pressure switch.
In the above-described embodiment, the second terminal 36 provided in the pressure switch 1 is shown as an example of a metal terminal. However, the metal terminal is not limited to the pressure switch. The metal terminal may be provided in a device other than a pressure switch, such as a solenoid for solenoid, various power supply connectors, a flowmeter, or a pressure sensor, or may be provided in a switch other than a pressure switch. The specific application object of the metal terminal can be arbitrarily set.
In the above-described embodiment, the example of the second terminal 36 is shown as an example of the metal terminal, and in the second terminal 36, the projecting portion 362 projects to a spaced position in the second direction D12 which is a direction perpendicular to the first direction D11 and along the width direction of the terminal main body 361, and the caulking portion 363 projects from the spaced position. However, the second direction in which the projecting portion projects, that is, the separation direction of the caulking portion, is not limited to the second direction D12, which is a direction perpendicular to the first direction D11 and along the width direction of the terminal main body 361. The second direction in which the projecting portion projects may be, for example, a direction orthogonal to the front and back surfaces of the plate-shaped terminal body, and may be set to any direction as long as it is a direction intersecting the first direction in which the terminal body projects.
In the above-described embodiment, the second terminal 36 having the caulking portions 363 provided at a pair of spaced positions across the other end portion 361d of the terminal main body 361 is shown as an example of the metal terminal. However, the metal terminals are not limited thereto, and the specific number and arrangement of the caulking portions can be arbitrarily set. For example, the caulking portion may be formed in a band shape with the direction intersecting the second direction D12 as the width direction D13, and the distal end portion may be deformed by caulking so as to be bent in one direction in the second direction D12, or may be deformed by caulking so as to be cut and protruded in two directions in the second direction D12. However, the caulking portions 363 are provided at the pair of spaced positions, so that the rotational play of the second terminal 36 (metal terminal) can be suppressed, which is similar to the above.
In the above-described embodiment, the second terminal 36 having the caulking portions 363 provided at a pair of spaced positions corresponding to both ends of the extension portion 362 is shown as an example of a metal terminal. However, the caulking portion may be provided at least at the isolation position, and may be provided to protrude from a middle position of the protruding portion in addition to the isolation position. By providing the caulking portion also at such an intermediate position, the fixing strength of the metal terminal can be improved. Further, the number of the caulking portions at each isolation position is not limited to one at each isolation position, and a plurality of caulking portions may be provided at each isolation position, thereby improving the fixing strength of the metal terminal.
In the above-described embodiment, the second terminal 36 is shown as an example of a metal terminal, and in the second terminal 36, the caulking portion 363 extends in a band-like manner in the first direction D11 with the direction intersecting the second direction D12 as the width direction D13. However, the metal terminal is not limited to this, and the caulking portion may have a band plate shape, a round bar shape, a square bar shape, or the like with the second direction D12 as the width direction, and the specific shape thereof may be arbitrarily set. However, the caulking portions 363 extending in the first direction D11 in a band-like manner with the direction intersecting the second direction D12 being the width direction D13 can suppress rotational play of the second terminals 36 (metal terminals) around the axis of the second direction D12, which is also the same as described above.
In the above-described embodiment, the second terminal 36 is shown as an example of a metal terminal, and in the second terminal 36, the tip portion 363a of the caulking portion 363 is caulked and deformed so as to protrude from the penetrating portion of the top plate portion 23a in a direction intersecting the second direction D12. However, the metal terminal is not limited to this, and the projecting direction of the tip end portion of the caulking portion in the caulking deformation can be arbitrarily set. However, the same applies to the point that the distal end 363a of the caulking portion 363 is caused to protrude in the direction intersecting the second direction D12, so that the second terminal 36 (metal terminal) can be prevented from rotating and wobbling about the axis in the second direction D12.
In the above-described embodiment, the second terminal 36 is shown as an example of a metal terminal, and in the second terminal 36, the tip portion 363a of the caulking portion 363 is caulked and deformed so as to be cut and projected in two directions intersecting the second direction D12. However, the metal terminal is not limited to this, and the deformed shape of the tip end portion of the caulking portion in the caulking deformation can be arbitrarily set. For example, the caulking portion may be formed in a band shape with the second direction D12 as the width direction, and the tip end portion may be caulked and deformed so as to be cut in two directions intersecting the second direction D12. Further, the caulking portion may be formed in a round bar shape or a square bar shape, and the caulking deformation may be performed so as to flatten the tip end portion. However, the same applies to the point that the distal end 363a of the caulking portion 363 is caulked and deformed so as to be cut and projected in two directions intersecting the second direction D12, and thereby the rotational play of the metal terminal about the axis in the second direction can be suppressed.
In the above-described embodiment, the second terminal 36 of the conductive member attachment portion 364 is disposed on the side of the other end portion 361d of the terminal main body 361 as an example of the metal terminal. However, the metal terminal is not limited thereto, and the conducting member mounting portion 364 may not be provided. However, the conductive member mounting portion 364 can be provided to allow the conductive member 35 to be disposed without interfering with the installation of the caulking receiving member in the space where the caulking portion 363 is disposed, which is also the same as described above.
Claims (8)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-141050 | 2019-07-31 | ||
| JP2019141050A JP7134148B2 (en) | 2019-07-31 | 2019-07-31 | Metal terminals and pressure switches |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112309763A true CN112309763A (en) | 2021-02-02 |
| CN112309763B CN112309763B (en) | 2024-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010740559.3A Active CN112309763B (en) | 2019-07-31 | 2020-07-28 | Metal terminals and pressure switches |
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| Country | Link |
|---|---|
| JP (1) | JP7134148B2 (en) |
| CN (1) | CN112309763B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112309763B (en) | 2024-12-06 |
| JP7134148B2 (en) | 2022-09-09 |
| JP2021026815A (en) | 2021-02-22 |
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