CN111052511B - Connecting terminal base and electrical equipment - Google Patents
Connecting terminal base and electrical equipment Download PDFInfo
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- CN111052511B CN111052511B CN201880056936.2A CN201880056936A CN111052511B CN 111052511 B CN111052511 B CN 111052511B CN 201880056936 A CN201880056936 A CN 201880056936A CN 111052511 B CN111052511 B CN 111052511B
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- leaf spring
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- 238000003780 insertion Methods 0.000 claims abstract description 98
- 230000037431 insertion Effects 0.000 claims abstract description 98
- 238000005452 bending Methods 0.000 claims abstract description 24
- 230000007704 transition Effects 0.000 claims 1
- 239000002184 metal Substances 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000000034 method Methods 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
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
- H01R4/48275—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end with an opening in the housing for insertion of a release tool
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
- H01R9/24—Terminal blocks
- H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
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- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
Comprises an inner member (73) disposed inside the leaf spring (34). The inner member (73) includes: a support part (81) which supports the leaf spring (34) by abutting against the end part of the first bending section (53) which is the fixed end side of the leaf spring (34); and a bent section limiting part (82), when the plate spring (34) is assembled, and the plate spring (34) is pressed to the depth side in the insertion direction from the standard position, the bent section limiting part (82) is abutted with the first bent section (53) at a predetermined position to stop the plate spring (34).
Description
Technical Field
The invention relates to a connection terminal block and an electric device.
Background
Patent document 1 discloses a push-in terminal in which an electric wire is inserted into a housing as a terminal structure for connecting the electric wire to a circuit. In this terminal structure, a plate spring bent in a substantially V-shape is used. When the electric wire is inserted, the plate spring is gradually pressed by the tip end of the electric wire, and when the tip end of the electric wire passes over the tip end of the plate spring, the engagement state is shifted to the state in which the tip end of the plate spring presses the electric wire.
Documents of the prior art
Patent document
Patent document 1: japanese patent No. 5539809
Disclosure of Invention
Problems to be solved by the invention
The fixed end side of the plate spring is supported, but the wire may be shaken depending on the manner of the support. Further, when the plate spring is pushed deeper than the standard position due to an assembly error, it is difficult to stably hold the electric wire.
The purpose of the present invention is to stably hold an electric wire.
Means for solving the problems
The invention relates to a connecting terminal seat in one technical scheme,
the connection terminal block includes a plate spring which is engaged with the electric wire in the inside of the housing to suppress displacement of the electric wire in the pull-out direction when the electric wire is inserted into the electric wire insertion hole of the housing,
the plate spring includes:
a free end section in which a position where the wire passes through the inside of the housing is defined as a wire path, the free end section being disposed such that a distal end thereof protrudes toward a depth side in the insertion direction and the wire path, and a plate surface thereof intersects the wire path;
a fixed end section fixed to the housing, extending linearly in parallel with the wire path, and terminating at a rear end in the linear shape; and
a first curved section which is interposed between the free end section and the fixed end section and is curved to a side which is convex when viewed from a front side in the insertion direction,
when the electric wire is inserted, the tip of the electric wire presses the free end side section, when the tip of the electric wire passes over the tip of the free end side section, the engaging state of the electric wire is shifted to the tip of the free end side section,
the connecting terminal base includes an inner member supported by the housing and disposed inside the leaf spring,
the medial member includes:
a support portion that supports the leaf spring by abutting an end portion of the leaf spring that is a fixed end side of the leaf spring in the first bending section; and
and a bent section restricting portion that abuts the first bent section at a predetermined position to stop the leaf spring when the leaf spring is pushed further in the insertion direction than the standard position when the leaf spring is assembled.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, since the inner member supports the end portion which becomes the fixed end side of the leaf spring in the first bending section, the fixed end side section can be suppressed from inclining toward the free end side of the leaf spring. Further, even if the plate spring is pushed in beyond the standard position, the plate spring can be stopped at a predetermined position. Therefore, the wire can be stably held while suppressing the rattling of the wire.
Drawings
Fig. 1 is a perspective view of a connection terminal block.
Fig. 2 is a perspective view partially showing an internal connection terminal block.
Fig. 3 is a sectional view showing a state before insertion of a ferrule terminal (japanese: フェルール terminal).
Fig. 4 is a cross-sectional view showing a state in which the terminal portion is in contact with the free end section of the plate spring.
Fig. 5 is a cross-sectional view of a state where the distal end of the terminal portion reaches the distal end of the free end section.
Fig. 6 is a sectional view of a state where insertion of the ferrule terminal is completed.
Fig. 7 is a sectional view showing a state where a tool is inserted.
Fig. 8 is a diagram showing the intermediate plate of one pole (japanese: one masterminute).
Fig. 9 is a diagram showing a leaf spring of one pole.
Fig. 10 shows a state where the leaf spring is assembled on one side.
Fig. 11 shows a state where the leaf spring is assembled to the other side.
Detailed Description
Embodiments of the present invention are described below with reference to the drawings. Each drawing is a schematic drawing, and may be different from the actual drawing. The following embodiments are intended to exemplify apparatuses and methods for embodying the technical idea of the present invention, and the configuration is not limited to the following. That is, the technical idea of the present invention can be variously modified within the technical scope described in the claims.
Structure (of the related Art)
Fig. 1 is a perspective view of a connection terminal block.
In the following description, for convenience, three directions orthogonal to each other are referred to as a width direction, a longitudinal direction, and a depth direction.
The connection terminal block 11 is a connection socket (japanese: ターミナルソケット) for connecting the relay with an external circuit. A primary-side terminal portion 12 for a coil terminal to which a lead wire on a primary side (japanese character side) can be connected is formed on one end side in the longitudinal direction. A relay terminal part 13 to which a relay having, for example, 4-pole contacts can be connected is formed at the center in the longitudinal direction. On the other end side in the longitudinal direction, a secondary side terminal portion 14 is formed to which a secondary side lead wire for a common terminal, a secondary side lead wire for a contact terminal, and a secondary side lead wire for a contact terminal b can be connected. The primary terminal portion 12, the relay terminal portion 13, and the secondary terminal portion 14 are integrated by a housing 15.
In the housing 15, the upper surface of the relay terminal portion 13 located on the near side in the depth direction is arranged at a position closer to the depth side in the depth direction than the upper surfaces of the primary terminal portion 12 and the secondary terminal portion 14 located on the near side in the depth direction.
The primary terminal portion 12 has a spring-type terminal structure, and a plurality of wire insertion holes 21 into which lead wires can be inserted in the depth direction are formed in the upper surface of the housing 15. Two electric wire insertion holes 21c, 21d are formed for one polarity on one end side in the width direction, and two electric wire insertion holes 21a, 21b are formed for the other polarity on the other end side in the width direction. Thus, the primary-side terminal portion 12 has a total of 4 wire insertion holes 21. The two electric wire insertion holes 21a, 21b or the two electric wire insertion holes 21c, 21d having the same polarity are offset in both the width direction and the longitudinal direction and arranged in a zigzag shape as viewed from the depth direction. A plurality of tool insertion holes 22 are formed in the upper surface of the housing 15 so as to be aligned in the longitudinal direction with respect to the electric wire insertion holes 21 and so as to allow a tool to be inserted in the depth direction. One tool insertion hole 22 is provided for each of the electric wire insertion holes 21a to 21d, and the tool insertion holes 22 are disposed on the other end side in the longitudinal direction of the electric wire insertion holes 21a to 21 d. Therefore, the primary-side terminal portion 12 has a total of 4 tool insertion holes 22.
The relay terminal portion 13 has a plug-in type terminal structure, and a plurality of plug insertion ports 23 into which a plug can be inserted in the depth direction are formed in the upper surface of the housing 15. Two plug insertion openings 23 are formed as coil terminals on one end side in the longitudinal direction. Three plug insertion openings 23 are formed in the longitudinal direction on the other end side in the longitudinal direction for the common terminal, the a-contact terminal, and the b-contact terminal, and four sets of the three plug insertion openings 23 are arranged in the width direction as one set. Therefore, the relay terminal portion 13 has 14 plug insertion ports 23 in total.
The secondary terminal portion 14 has a spring-type terminal structure, and a plurality of wire insertion holes 24 corresponding to 4 poles into which lead wires can be inserted in the depth direction are formed in the upper surface of the housing 15. The secondary-side terminal portion 14 has three layers whose heights in the depth direction decrease in order from one end side to the other end side in the longitudinal direction. In the upper layer, for example, two electric wire insertion holes are formed for each pole as b-contact terminals, and electric wire insertion holes 24a to 24h are formed. In the intermediate layer, for example, two electric wire insertion holes are formed for each pole as a-contact terminals, and electric wire insertion holes 24i to 24p are formed. In the lower layer, for example, two electric wire insertion holes are formed for each pole as a common terminal, and electric wire insertion holes 24q to 24x are formed. In each layer, the two electric wire insertion holes 24 (for example, the electric wire insertion holes 24a, 24b) of one electrode are offset in both the width direction and the longitudinal direction and arranged in a zigzag shape as viewed from the depth direction. These six electric wire insertion holes 24 (for example, electric wire insertion holes 24a, 24b, 24i, 24j, 24q, 24r) are arranged as a group by an amount corresponding to four poles in the width direction. Thus, the secondary-side terminal portion 14 has 24 electric wire insertion holes 24 in total. A plurality of tool insertion holes 25 are formed in the upper surface of the housing 15 so as to be aligned in the longitudinal direction with respect to the electric wire insertion holes 24 and into which a tool can be inserted in the depth direction. In each layer, one tool insertion hole 25 is provided for each of the electric wire insertion holes 24a to 24x, and the tool insertion holes 25 are disposed at one end side in the longitudinal direction of the electric wire insertion holes 24. Thus, the secondary-side terminal portion 14 has 24 tool insertion holes 25 in total.
Fig. 2 is a perspective view partially showing an internal connection terminal block.
Since the primary-side terminal portions 12 and the secondary-side terminal portions 14 have substantially the same structure, the secondary-side terminal portions 14 will be described as an example.
A blade receiving spring 31 is provided inside the housing 15 on the depth side in the depth direction of each plug insertion opening 23. The blade receiving spring 31 includes a pair of spring pieces that are opposed to each other and biased against each other, and the blade receiving spring 31 sandwiches the plug inserted between the pair of spring pieces. Spring metal fittings 32 are provided on the depth side in the depth direction of the electric wire insertion holes 24a to 24x, and the spring metal fittings 32 are attached to the intermediate base 46. The spring metal fitting 32 includes a pressing surface 33 substantially parallel to the depth direction and the width direction, and a plate spring 34 urged against the pressing surface 33, and the spring metal fitting 32 sandwiches a lead wire inserted between the pressing surface 33 and the plate spring 34. At a position on the depth side in the depth direction with respect to the blade receiving spring 31 and the spring metal fitting 32, an intermediate conductive plate 35 for electrically connecting the blade receiving spring 31 and the spring metal fitting 32 is provided. The relay conductive plate 35 is dual system (japanese) for the coil terminals, four system for the common terminal, the a contact terminal and the b contact terminal, respectively.
The ferrule terminal 17 is crimped to the lead 16 (electric wire) inserted into the electric wire insertion hole 24. Here, the ferrule terminal 17 inserted into the electric wire insertion hole 24x of fig. 1 is shown. The ferrule terminal 17 is a rod-shaped crimp terminal for preventing scattering of the stranded wire and stabilizing the quality of the electrical connection. The ferrule terminal 17 includes a terminal portion 19 and an insulated ferrule portion 18. A tapered surface 18a whose diameter decreases going to the tip is formed on the tip side of the collar portion 18, and the diameter of the terminal portion 19 is smaller than that of the collar portion 18.
When the lead 16 is inserted into the electric wire insertion hole 24 of the housing 15, the plate spring 34 engages with the terminal portion 19 inside the housing 15, and suppresses displacement of the lead 16 in the pull-out direction. When a tool (not shown) is inserted into the tool insertion hole 25, the engagement between the plate spring 34 and the terminal portion 19 is released inside the housing 15.
Next, the structure of the electric wire insertion hole 24 will be explained.
The electric wire insertion holes 24 formed in the secondary terminal portion 14 have the same structure, and the electric wire insertion holes 24 formed in the lower layer will be described as an example.
Fig. 3 is a sectional view showing a state before insertion of the ferrule terminal.
The wire insertion hole 24 includes a large diameter portion 43, an abutting portion 44, and a small diameter portion 45 in this order toward the inside of the housing 15. The diameter of the large diameter portion 43 is slightly larger than the size of the collar portion 18. The abutting portion 44 is a tapered surface having a diameter that decreases as going to the depth side in the depth direction. The taper angle of the abutting portion 44 with respect to the depth direction is larger than the angle of the tapered surface 18a with respect to the depth direction. The diameter of the small diameter portion 45 is smaller than the diameter of the collar portion 18 and larger than the diameter of the terminal portion 19.
The plate spring 34 is made of, for example, stainless steel, and has a uniform plate thickness of about 0.5 mm. The plate spring 34 includes a free end section 51, a fixed end section 52, a first bending section 53, a second bending section 54, and a tool contact section 55. A position where the terminal portion 19 passes through the inside of the housing 15 is referred to as a terminal path 56 (wire path).
The free end side section 51 is a section in which the distal end is directed toward the depth side in the insertion direction and the terminal path 56 linearly protrude, and the plate surface is disposed so as to intersect with the terminal path 56 and is biased toward the pressing surface 33. In a state where the ferrule terminal 17 is not inserted, the tip 51a of the free end section 51 abuts against the pressing surface 33.
The fixed end-side section 52 is a linear section fixed to the intermediate base 46 and extending parallel to the terminal path 56.
The first curved section 53 is a section that is interposed between the free end-side section 51 and the fixed end-side section 52 and is curved to a side that is convex when viewed from the near front side in the insertion direction. If the radius of curvature is too small, plastic deformation is likely to occur, and the elastic force becomes weak, so the radius of curvature is set to 2 times or more, preferably 3 times or more, the plate thickness. Therefore, the curvature radius is preferably 1.5mm or more.
The second curved section 54 is a section that is interposed between the free end side section 51 and the first curved section 53 and is curved to a side that is recessed when viewed from the front side in the insertion direction or when viewed from the terminal path 56.
The tool contact section 55 is a linear section that is interposed between the first curved section 53 and the second curved section 54 and that is pressed by the outer peripheral surface of the tool against the terminal path 56 toward the fixed end side of the plate spring 34 when the tool is inserted.
The operation of the plate spring 34 will be described.
Fig. 4 is a cross-sectional view showing a state in which the terminal portion is in contact with the free end section of the plate spring.
When the ferrule terminal 17 is gradually inserted into the wire insertion hole 24, the terminal portion 19 passes through the small diameter portion 45, and the tip 19a of the terminal portion 19 abuts against the plate surface of the free end section 51 of the plate spring 34.
When the ferrule terminal 17 is gradually pressed from this state, the distal end 19a of the terminal portion 19 gradually presses the plate surface of the free end section 51 of the plate spring 34 toward the depth side in the depth direction. At this time, the range from the free end section 51 to the tool contact section 55 is rotated about the center of curvature of the first bending section 53 as a fulcrum, and the plate spring 34 is elastically deformed in a direction to gradually reduce the opening degree, i.e., the closing direction, of the tool contact section 55 with respect to the fixed end section 52.
Fig. 5 is a cross-sectional view of a state where the distal end of the terminal portion reaches the distal end of the free end section.
When the ferrule terminal 17 is further gradually pressed in, the distal end 19a of the terminal portion 19 reaches the distal end 51a of the free end section 51.
When the ferrule terminal 17 is further press-fitted and the distal end 19a of the terminal portion 19 passes over the distal end 51a of the free end section 51, the terminal portion 19 enters between the distal end 51a of the free end section 51 and the pressing surface 33 so as to be pushed in. At this time, the engagement state in which the terminal portion 19 is pressed against the pressing surface 33 toward the distal end 51a of the free end section 51 is shifted by the elastic force of the plate spring 34.
Since the free end section 51 protrudes toward the depth side in the depth direction, displacement of the terminal portion 19 in the insertion direction is permitted in the positive direction in this engaged state. On the other hand, the displacement of the terminal portion 19 in the pull-out direction is reversed in the reversed direction of the free end section 51, and therefore, the tip 51a of the free end section 51 catches the terminal portion 19, and the displacement of the terminal portion 19 in the pull-out direction is suppressed. Therefore, the ferrule terminal 17 can be prevented from loosening or falling off. In this way, the terminal portion 19 is held between the distal end 51a of the free end section 51 and the pressing surface 33, and the terminal portion 19 is held in a restrained state. The width of the terminal portion 19 is about 1.5mm, and a gap corresponding to the width of the terminal portion 19 is left between the distal end 51a of the free end section 51 and the pressing surface 33.
Here, although the ferrule terminal 17 is described as not being inclined for convenience, in actuality, the terminal portion 19 is pressed by the plate spring 34 toward the pressing surface 33, and therefore the ferrule terminal 17 is inclined with respect to the depth direction. Therefore, when the ferrule terminal 17 is inserted, the diameter of the large diameter portion 43, the taper angle of the abutting portion 44, the diameter of the small diameter portion 45, and the like are set so as to actively allow a slight inclination.
Fig. 6 is a sectional view of a state where insertion of the ferrule terminal is completed.
When the ferrule terminal 17 is further gradually pressed in and the tip end side of the tapered surface 18a of the ferrule portion 18 abuts against the abutting portion 44 of the electric wire insertion hole 24, further insertion is stopped. At this time, the distal end 19a of the terminal portion 19 is set to have a gap with respect to the bottom surface 47 inside the housing 15. Here, a ferrule terminal is used in which the length of the ferrule portion 18 is about 6.0mm, the length of the terminal portion 19 is about 8.0mm, and the total length is about 14.0 mm.
Fig. 7 is a sectional view showing a state where a tool is inserted.
When the plate spring 34 is engaged with the terminal portion 19, the tool insertion hole 25 is disposed at a position overlapping with a region from the other end side in the longitudinal direction of the free end section 51 to the other end side in the longitudinal direction of the first bent section 53, as viewed from the near front side in the depth direction. The tool insertion hole 25 is formed to be inclined by about 10 degrees with respect to the depth direction so as to be closer to the terminal portion 19 toward the depth side in the depth direction. When the plate spring 34 is engaged with the terminal portion 19, the tool contact section 55 extends substantially parallel to the axis of the tool insertion hole 25. The tool 61 is, for example, a straight screwdriver.
When the tool 61 is inserted, the outer peripheral surface of the tool 61 is in contact with the plate spring 34 while sliding in a range from one end side in the longitudinal direction of the first bending section 53 to the tool contact section 55, and the tool contact section 55 is pushed toward one end side in the longitudinal direction. Alternatively, the tip of the tool 61 abuts against the plate spring 34 in a range from the other end side in the longitudinal direction of the free end side section 51 to the second bent section 54, and presses down the free end side section 51. Thus, by pushing the tool contact section 55 toward one end side in the longitudinal direction or pressing the free end side section 51 downward, the plate spring 34 is elastically deformed in a direction to reduce the degree of opening, that is, the closing, of the tool contact section 55 with respect to the fixed end side section 52. Thereby, the engagement between the tip end 51a of the free end section 51 and the terminal portion 19 is released, and the terminal portion 19 is released from the restraint of the plate spring 34, so that the ferrule terminal 17 can be extracted.
Next, the intermediate base 46 will be explained.
Fig. 8 is a diagram showing an intermediate plate of one pole.
The intermediate base 46 has an intermediate plate 71 formed on each pole so as to protrude toward the front side in the depth direction. Since the intermediate plates 71 of the respective poles are all of a common structure, only one pole is shown here. Fig. 8 (a) is a view seen from the other end side in the width direction, and fig. 8 (b) is a view seen from the one end side in the width direction.
Each intermediate plate 71 includes a partition plate 72, an inner member 73 on one side, and an inner member 74 on the other side.
Since there are two electric wire insertion holes 24 (e.g., electric wire insertion holes 24x, 24w) per pole, one intermediate plate 71 has a side corresponding to the electric wire insertion hole 24 (e.g., electric wire insertion hole 24x) on one side and a side corresponding to the electric wire insertion hole 24 (e.g., electric wire insertion hole 24w) on the other side. The partition plate 72 partitions one side and the other side.
Since the two electric wire insertion holes 24 (e.g., the electric wire insertion holes 24x, 24w) are offset in the longitudinal direction, the inside member 73 on the one side and the inside member 74 on the other side are also offset in the longitudinal direction, but are basically the same structure.
Fig. 9 is a diagram showing a leaf spring of one pole.
The plate spring 34 branches the near side in the depth direction of the fixed end-side section 52 into a side corresponding to the electric wire insertion hole (for example, the electric wire insertion hole 24x) on one side and a side corresponding to the electric wire insertion hole 24 (for example, the electric wire insertion hole 24w) on the other side. At the leading ends of the branches, a first bending section 53, a tool contact section 55, a second bending section 54, and a free end section 51 are continuously formed, respectively. The side corresponding to the other electric wire insertion hole 24 (e.g., electric wire insertion hole 24w) is offset to the other end side in the longitudinal direction than the side corresponding to the one electric wire insertion hole 24(24x), and therefore the near front side in the depth direction of the fixed end side section 52 is inclined to the other end side in the longitudinal direction.
The plate spring 34 is assembled to the intermediate plate 71 of the intermediate base 46.
Fig. 10 shows a state where the leaf spring is assembled on one side.
Here, a state of a side corresponding to one electric wire insertion hole (for example, the electric wire insertion hole 24x) as viewed from one end side in the width direction is shown.
The one inner member 73 is disposed inside the leaf spring 34, and includes a support portion 81, a regulating portion 82 (bending section regulating portion), a regulating portion 83 (tool contact section regulating portion), and a regulating portion 84 (free end section regulating portion).
The support portion 81 supports the leaf spring 34 by abutting against an end portion of the first bent section 53 on the fixed end side of the leaf spring 34, that is, a connection position between the first bent section 53 and the fixed end side section 52. The outer side of the fixed end section 52, that is, the other end side in the longitudinal direction is supported by a not-shown housing 15.
When the plate spring 34 is pushed deeper than the standard position in the insertion direction during assembly of the plate spring 34, the restricting portion 82 abuts against the first curved section 53 at a predetermined position to stop the plate spring 34. The lower end 52a of the fixed end section 52 of the leaf spring 34 is supported by the intermediate base 46, but the leaf spring 34 may be pushed deeper than the standard position due to an assembly error. Here, since the plate spring 34 is located at the standard position, the first bending section 53 is separated from the restricting portion 82. The predetermined position at which the plate spring 34 is stopped is set within a range in which the ferrule terminal 17 can be stably held.
When the tool 61 is inserted and the tool contact section 55 is pushed toward the fixed end side of the plate spring 34, the restricting portion 83 abuts at least one of the end portion of the first bending section 53 that is the free end side of the plate spring 34 and the tool contact section 55 at a predetermined position, and stops the plate spring 34. As described above, the tool 61 is a straight screwdriver. Therefore, the tip side is formed so that the thickness decreases as the two end surfaces back to back move toward the tip, and the cutting edge is in a straight shape. When the cutting edge of the tool 61 is inserted substantially parallel to the leaf spring 34, the first bending section 53 is not deflected more than necessary, but when inserted non-parallel or pried, the first bending section 53 is deflected more than necessary. The predetermined position at which the plate spring 34 is stopped is set within a range in which plastic deformation of the plate spring 34 can be prevented.
When the tool 61 is inserted and the tool contact section 55 is pushed toward the fixed end side of the plate spring 34, the restricting portion 84 abuts against the free end side section 51 at a predetermined position to stop the plate spring 34. If the tool 61 is inserted deeply, the first bending section 53 is deflected more than necessary. The predetermined position at which the plate spring 34 is stopped is set within a range in which plastic deformation of the plate spring 34 can be prevented.
Fig. 11 shows a state where the leaf spring is assembled to the other side.
As described above, since the one side and the other side have substantially the same configuration, the same reference numerals are given to common parts, and detailed description is omitted. On the other side, the support portion 81 and the regulating portion 82 are made to protrude toward the other end side in the longitudinal direction. The restricting portion 82 has an inner corner 85 on the depth side in the depth direction, and the inner corner 85 is rounded in an arc shape to relax the concentration of stress.
Action
Next, the main operation of the embodiment will be described.
The fixed end section 52 of the plate spring 34 is supported, but depending on the supporting method, the ferrule terminal 17 may be shaken. For example, as shown by the broken line in fig. 10, when the position of the restricting portion 82 in the depth direction is located further to the depth side, the near side in the depth direction of the fixed end-side section 52 may be inclined toward the free end side of the leaf spring 34, and rattling may occur.
Then, the inner member 73 (or the inner member 74) is disposed inside the plate spring 34, and the end portion of the first bending section 53 on the fixed end side of the plate spring 34 is supported by the support portion 81. This can suppress the inclination of the fixed end section 52 toward the free end of the leaf spring 34. Therefore, the movement range of the plate spring 34 is stabilized to suppress the rattling of the ferrule terminal 17, and the ferrule terminal 17 can be stably held.
Further, the plate spring 34 may be pushed deeper than the standard position due to an assembly error. Then, the restricting portion 82 is provided, and when the plate spring 34 is pushed further to the deep side than the standard position, the restricting portion 82 abuts against the first curved section 53 at a predetermined position to stop the plate spring 34. This enables stable holding of the ferrule terminal 17.
In addition, when the tool 61 is inserted or pried non-parallel to the leaf spring 34, the first bending section 53 is deflected more than necessary. Then, when the tool contact section 55 is pushed toward the fixed end side of the plate spring 34 by the tool 61, the restricting portion 83 is provided, and the plate spring 34 is stopped by the restricting portion 83 abutting at a predetermined position at least one of the end portion of the first bending section 53 that is the free end side of the plate spring 34 and the tool contact section 55. This prevents plastic deformation of the plate spring 34, and thus suppresses influence on the characteristics of the plate spring 34. Thus, the ferrule terminal 17 can be stably held.
Further, when the tool 61 is inserted deeply, the first bending section 53 is bent more than necessary. Then, the restricting portion 84 is provided, and when the tool contact section 55 is pushed toward the fixed end side of the plate spring 34 by the tool 61, the restricting portion 84 abuts against the free end side section 51 at a predetermined position to stop the plate spring 34. This prevents plastic deformation of the plate spring 34, and suppresses influence on the characteristics of the plate spring 34. Thus, the ferrule terminal 17 can be stably held.
Modifications of the examples
In the above-described embodiment, the case where the ferrule terminal 17 is crimped to the lead 16 has been described, but the present invention is not limited thereto, and a bare wire may be used as it is regardless of whether the wire is a single wire or a stranded wire.
In the above-described embodiment, the relay of the c-contact formed by combining the a-contact terminal and the b-contact terminal has been described, but the present invention is not limited thereto, and can be applied to a relay of the a-contact and a relay of the b-contact. Further, although the description has been given of the relay having the 4-pole contact, the present invention is not limited thereto, and can be applied to a 1-pole, 2-pole, or 3-pole relay. The present invention is not limited to a relay, and can be applied to a timer.
In the above-described embodiments, the description has been given of the socket for connecting the relay, the timer, and the like to the external circuit, but the invention is not limited thereto. In short, any other electric device or accessory can be used as long as the spring-type terminal structure can hold the ferrule terminal 17 inserted into the housing 15.
While the above description has been made with reference to a limited number of embodiments, the scope of protection is not limited thereto, and modifications of the embodiments based on the above disclosure will be apparent to those skilled in the art.
Description of the reference numerals
11. Connecting a terminal base; 12. a primary side terminal portion; 13. a relay terminal part; 14. a secondary side terminal part; 15. a housing; 16. a lead wire; 17. a ferrule terminal; 18. a collar portion; 18a, a conical surface; 19. a terminal portion; 19a, top end; 21. an electric wire insertion hole; 22. a tool insertion hole; 23. a plug insertion opening; 24. an electric wire insertion hole; 25. a tool insertion hole; 30. an angle; 32. a spring metal member; 33. pressing the face; 34. a plate spring; 35. a relay conductive plate; 43. a large diameter portion; 44. an abutting portion; 45. a small diameter part; 46. a middle base; 47. a bottom surface; 51. a free end side section; 51a, top end; 52. a fixed end side section; 53. a first curved section; 54. a second curved section; 55. a tool contact zone; 56. a terminal path; 61. a tool; 71. a middle plate; 72. a partition plate; 73. an inner member; 74. an inner member; 81. a support portion; 82. a restricting section; 83. a restricting section; 84. a restricting section; 85. the internal angle.
Claims (4)
1. A connecting terminal base is characterized in that,
the connection terminal block includes a plate spring which is engaged with the electric wire in the housing to restrain the electric wire from being displaced in the direction of pulling out the electric wire when the electric wire is inserted into the electric wire insertion hole of the housing,
the plate spring includes:
a free end section in which a position where the wire passes through the inside of the housing is defined as a wire path, a distal end of the free end section being disposed so as to protrude toward a depth side in an insertion direction and the wire path, and a plate surface of the free end section intersecting the wire path;
a fixed end section fixed to the housing, extending linearly in parallel with the wire path, and terminating linearly at a rear end; and
a first curved section that is interposed between the free end section and the fixed end section and that is curved to a side that is convex when viewed from a front side in the insertion direction,
a transition from an engaged state in which the tip end of the electric wire presses the free end side section when the electric wire is inserted, and the tip end of the electric wire presses the electric wire toward the tip end of the free end side section when the tip end of the electric wire passes over the tip end of the free end side section,
the connection terminal base includes an inner member supported by the housing and disposed inside the leaf spring,
the medial member includes:
a support portion that supports the leaf spring by abutting an end portion of the first bending section that is a fixed end side of the leaf spring; and
a bent section restricting portion that comes into contact with the first bent section at a predetermined position to stop the leaf spring when the leaf spring is pushed to a depth side in the insertion direction from a standard position at the time of assembling the leaf spring,
the plate spring is branched at a proximal side in an insertion direction of the fixed end side section, and the first bending section and the free end side section are formed at a leading end of each branch.
2. The connection terminal block according to claim 1,
the connection terminal block includes a tool insertion hole formed in the housing in parallel with the electric wire insertion hole,
the plate spring includes:
a second bent section that is interposed between the free end section and the first bent section and is bent to a front side in the insertion direction or a side that is recessed when viewed from the wire path; and
a linear tool contact section interposed between the first bending section and the second bending section,
when a tool is inserted into the tool insertion hole, the tool contacts the tool contact section and pushes the tool contact section toward the fixed end side of the plate spring, thereby elastically deforming the plate spring and releasing the engagement between the tip end of the free end side section and the electric wire,
the inner member includes a tool contact section restricting portion that, when the tool is inserted and the tool contact section is pushed toward the fixed end side of the leaf spring, abuts at a predetermined position at least one of an end portion of the first bending section that is a free end side of the leaf spring and the tool contact section to stop the leaf spring.
3. The connection terminal block according to claim 2,
the inner member includes a free end section restricting portion that abuts the free end section at a predetermined position to stop the leaf spring when the tool is inserted and the tool contact section is pushed toward the fixed end of the leaf spring.
4. An electrical apparatus, wherein,
the electrical device is provided with the connection terminal block according to any one of claims 1 to 3.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-090187 | 2018-05-08 | ||
| JP2018090187 | 2018-05-08 | ||
| PCT/JP2018/047273 WO2019215953A1 (en) | 2018-05-08 | 2018-12-21 | Connection terminal stand, electrical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111052511A CN111052511A (en) | 2020-04-21 |
| CN111052511B true CN111052511B (en) | 2021-08-13 |
Family
ID=68468279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880056936.2A Active CN111052511B (en) | 2018-05-08 | 2018-12-21 | Connecting terminal base and electrical equipment |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3664222A4 (en) |
| JP (1) | JP6927423B2 (en) |
| CN (1) | CN111052511B (en) |
| WO (1) | WO2019215953A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6950672B2 (en) * | 2018-12-26 | 2021-10-13 | オムロン株式会社 | Terminal block |
| JP2023111444A (en) | 2022-01-31 | 2023-08-10 | オムロン株式会社 | socket |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1536519A1 (en) * | 2003-11-26 | 2005-06-01 | WIELAND ELECTRIC GmbH | Conductor terminal |
| CN103608971A (en) * | 2011-06-21 | 2014-02-26 | 菲尼克斯电气公司 | Electrical connection terminal |
| WO2017072092A1 (en) * | 2015-10-30 | 2017-05-04 | Eaton Electrical Ip Gmbh & Co. Kg | Contacting device for contacting an electrical conductor to an electrical conductor path |
| CN109757121A (en) * | 2017-09-06 | 2019-05-14 | 富士电机机器制御株式会社 | Leaf spring and connecting pin stroma |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5539809B2 (en) | 1971-10-29 | 1980-10-14 | ||
| DE202005005369U1 (en) * | 2004-11-13 | 2006-03-16 | Weidmüller Interface GmbH & Co. KG | Connecting device for direct plug connection of conductor ends and electrical device with such a connection device |
| DE102008039232B4 (en) * | 2008-08-22 | 2019-02-28 | Phoenix Contact Gmbh & Co. Kg | Electrical connection terminal |
| DE102009050366A1 (en) * | 2009-10-22 | 2011-04-28 | Phoenix Contact Gmbh & Co. Kg | Plug connection for receiving a rigid conductor end |
| DE102011012021A1 (en) * | 2011-02-22 | 2012-08-23 | Phoenix Contact Gmbh & Co. Kg | Metal part for an electronic connection device |
| DE202012103314U1 (en) * | 2012-08-30 | 2013-12-02 | Weidmüller Interface GmbH & Co. KG | Connecting device for a conductor |
| DE202013100740U1 (en) * | 2013-02-19 | 2013-03-08 | Weidmüller Interface GmbH & Co. KG | Spring terminal for conductor |
| DE202015105022U1 (en) * | 2015-09-22 | 2016-12-23 | Weidmüller Interface GmbH & Co. KG | Connection device for conductors |
| JP2018056076A (en) * | 2016-09-30 | 2018-04-05 | オムロン株式会社 | Terminal board |
| JP6648046B2 (en) * | 2017-01-16 | 2020-02-14 | Idec株式会社 | Connected equipment |
| JP6583323B2 (en) * | 2017-03-21 | 2019-10-02 | 富士電機機器制御株式会社 | Wiring connector and electrical equipment |
| EP3633795B1 (en) * | 2017-05-29 | 2023-02-15 | Idec Corporation | Connection device |
-
2018
- 2018-12-21 WO PCT/JP2018/047273 patent/WO2019215953A1/en unknown
- 2018-12-21 CN CN201880056936.2A patent/CN111052511B/en active Active
- 2018-12-21 EP EP18918191.0A patent/EP3664222A4/en active Pending
- 2018-12-21 JP JP2020517759A patent/JP6927423B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1536519A1 (en) * | 2003-11-26 | 2005-06-01 | WIELAND ELECTRIC GmbH | Conductor terminal |
| CN103608971A (en) * | 2011-06-21 | 2014-02-26 | 菲尼克斯电气公司 | Electrical connection terminal |
| WO2017072092A1 (en) * | 2015-10-30 | 2017-05-04 | Eaton Electrical Ip Gmbh & Co. Kg | Contacting device for contacting an electrical conductor to an electrical conductor path |
| CN109757121A (en) * | 2017-09-06 | 2019-05-14 | 富士电机机器制御株式会社 | Leaf spring and connecting pin stroma |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111052511A (en) | 2020-04-21 |
| EP3664222A4 (en) | 2021-05-19 |
| JP6927423B2 (en) | 2021-08-25 |
| JPWO2019215953A1 (en) | 2020-10-01 |
| EP3664222A1 (en) | 2020-06-10 |
| WO2019215953A1 (en) | 2019-11-14 |
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Address after: No. 45, No. 5, South 1, Hongchao City, Saitama Prefecture, Japan Patentee after: FUJI ELECTRIC FA COMPONENTS & SYSTEMS Co.,Ltd. Address before: Tokyo, Japan Patentee before: FUJI ELECTRIC FA COMPONENTS & SYSTEMS Co.,Ltd. |
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