JP7304718B2 - Terminal block - Google Patents

Description

TECHNICAL FIELD The present invention relates to a terminal block having a wire connecting portion and a tab holding portion.

Conventionally, a terminal block includes terminals for external wiring and terminals for internal wiring. The external wiring terminal and the internal wiring terminal are electrically connected inside the terminal block. The external wiring terminal is connected to the power line. The internal wiring terminal is connected to a lighting device in the lighting fixture via an electric wire. Therefore, an electric wire cost or an assembly cost for the internal wiring of the terminal block is incurred.

Patent Document 1 discloses a technology in which a terminal block is provided with a wire connection portion and a tab holding portion, and the tab holding portion is inserted into and connected to a tab terminal on a substrate in order to eliminate the internal wiring. .

JP-A-9-245862

However, in the technique disclosed in Patent Document 1, the wire insertion direction and the extending direction of the tab holding portion and the tab terminal are orthogonal to each other. For this reason, the tab terminal tends to be subjected to stress due to movement of the tab holding portion when an electric wire is inserted, and the solder portion of the tab terminal is damaged.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a terminal block capable of suppressing breakage of a solder portion of a tab terminal when a tab holding portion moves.

The terminal block of the present invention includes a wire connecting portion for electrically connecting to a stripped conductor portion, and a tab holding portion for fitting and electrically connecting a tab terminal mounted on a substrate. , and the tab holding part and the tab terminal extend parallel to the direction in which the wire is inserted into the wire connection part and connected, and the extending direction of the tab holding part and the projecting direction in which the tab terminal projects upward The wire connection part and the tab holding part are formed in an integrated connection fitting, and have a housing in which the connection fitting is arranged, and the wire connection part is attached to the inserted wire It has a locking part that bites into and connects to the conductor part of the wire, is arranged in the housing, engages with the locking part, and applies an unlocking force to the locking part to apply the unlocking force to the conductor part of the wire and the wire connection part It has a release button for releasing the connection with .

According to the terminal block of the present invention, the tab holding portion and the tab terminal extend parallel to the direction in which the wire is inserted into the wire connection portion and connected. As a result, even if the tab holding portion moves when the wire is inserted or tension is applied to the wire, the relative position between the tab holding portion extending parallel to the direction in which the wire is inserted into the wire connection portion and the tab terminal is maintained. It stays connected just by slipping. As a result, no stress is applied to the tab terminal due to movement of the tab holding portion. Therefore, damage to the solder portion of the tab terminal when the tab holding portion moves can be suppressed.

1 is a wiring diagram showing a power supply and a terminal block according to Embodiment 1 of the present invention; FIG. 1 is a perspective view showing a terminal block installed on a substrate according to Embodiment 1 of the present invention; FIG. 1 is an exploded perspective view showing a terminal block installed on a substrate according to Embodiment 1 of the present invention; FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the terminal block which concerns on Embodiment 1 of this invention from above. It is a perspective view which shows the terminal block which concerns on Embodiment 1 of this invention from the bottom. 1 is an exploded perspective view showing a terminal block according to Embodiment 1 of the present invention; FIG. 1 is a perspective view showing a connection fitting according to Embodiment 1 of the present invention; FIG. Fig. 2 is a side view showing the connection fitting according to Embodiment 1 of the present invention; FIG. 4 is a bottom view showing the connection fitting according to Embodiment 1 of the present invention; FIG. 9 is an explanatory view showing the relationship between the distance between the pair of contact pieces facing each other and the thickness of the tab terminal according to Embodiment 1 of the present invention in a vertical cross section taken along line AA of FIG. 8; FIG. 2 is an explanatory view showing a vertical cross section of the terminal block in a state where a pair of contact pieces according to Embodiment 1 of the present invention are fitted to tab terminals; FIG. 3 is an explanatory view showing an enlarged vertical cross section of a state in which a pair of contact pieces according to Embodiment 1 of the present invention are fitted to a tab terminal; FIG. 4 is an explanatory view showing an enlarged longitudinal section of a state in which the release button according to Embodiment 1 of the present invention is engaged with the locking piece; FIG. 4 is an explanatory view showing an enlarged longitudinal section of a state in which the conductor portion of the electric wire according to Embodiment 1 of the present invention is inserted into the locking piece; FIG. 4 is an explanatory view showing an enlarged vertical cross section of a state in which the conductor portion of the electric wire according to Embodiment 1 of the present invention is inserted into the locking piece. FIG. 4 is a perspective view showing the relationship between the conductor portion of the wire to be inserted and the locking piece engaged with the release button according to Embodiment 1 of the present invention;

Embodiments of the present invention will be described below based on the drawings. In addition, in each figure, the same reference numerals denote the same or corresponding parts, and this is common throughout the specification. Also, in the drawings of cross-sectional views, hatching is appropriately omitted in view of visibility. Furthermore, the forms of components shown in the entire specification are merely examples and are not limited to these descriptions.

Embodiment 1.
<Wiring condition of the terminal block>
FIG. 1 is a wiring diagram showing a power supply 200 and a terminal block 100 according to Embodiment 1 of the present invention. A terminal block 100 shown in FIG. 1 is connected to a power supply 200 via an electric wire 1 . The terminal block 100 is used to supply electricity to a lighting fixture or the like. A plurality of terminal blocks 100 are used to relay power from the power supply 200 and supply electricity to a lighting fixture or the like. A terminal block 100 is provided with a plurality of terminals of the same polarity. As a result, one terminal block 100 relays power from the power source 200, and another terminal block 100 is connected to the previous terminal block 100 via the electric wire 1 to obtain the relayed power.

<Configuration of Terminal Block 100 Installed on Board 10>
FIG. 2 is a perspective view showing terminal block 100 installed on board 10 according to Embodiment 1 of the present invention. FIG. 3 is an exploded perspective view showing terminal block 100 installed on substrate 10 according to Embodiment 1 of the present invention.

As shown in FIGS. 2 and 3, the terminal block 100 is installed on the substrate 10. As shown in FIG. The substrate 10 is provided with a tab terminal 11 electrically connected to a lighting fixture or the like. The tab terminal 11 protrudes upward from the substrate 10 in a flat plate shape. The tab terminal 11 extends parallel to the direction in which the conductor portion of the electric wire is inserted and connected. Here, three tab terminals 11 protrude upward from one substrate 10 . The three tab terminals 11 are arranged side by side in the left-right direction. The planes of the three tab terminals 11 are oriented in parallel.

The substrate 10 has a flat plate shape. The substrate 10 is formed with insertion holes 12 through which the bolts 2 for fixing the terminal block 100 are inserted. The substrate 10 is formed with a rotation prevention hole 13 into which a rotation prevention projection 26 for restricting unnecessary rotation of the terminal block 100 is inserted. The anti-rotation hole 13 is provided in line with the insertion hole 12 of the bolt 2 in a direction perpendicular to the direction in which the electric wire 1 is inserted into the terminal block 100 .

Terminal block 100 is covered with housing 20 . The terminal block 100 is fixed to the board 10 with bolts 2 and nuts 3 . For this reason, the terminal block 100 and the substrate 10 are each formed with an insertion hole 22, an insertion hole 25, or an insertion hole 12 through which the bolt 2 is inserted. The bolt 2 is inserted into the insertion hole 22 so that the head thereof is locked on the upper surface side of the terminal block 100 . The nut 3 is screwed onto the tip of the threaded portion of the bolt 2 from the lower surface side of the substrate 10 . A bolt 2 and a nut 3 are housing fixing parts that fix the housing 20 to the substrate 10 . Note that the method of fixing the terminal block 100 to the substrate 10 by the housing fixing portion is not limited to the method using the bolt 2 and the nut 3 .

A power supply 200 or an electric wire 1 from another terminal block 100 is inserted into the terminal block 100 . The terminal block 100 has an input-side wire 1 to which power is supplied as wires 1 connected to one tab terminal 11, and a feed-side wire 1 that sends power to another terminal block 100 using itself as a relay. , there is.

<Configuration of terminal block 100>
FIG. 4 is a perspective view showing the terminal block 100 according to Embodiment 1 of the present invention as viewed from above. FIG. 5 is a perspective view showing the terminal block 100 according to Embodiment 1 of the present invention as viewed from below. FIG. 6 is an exploded perspective view showing terminal block 100 according to Embodiment 1 of the present invention.

As shown in FIGS. 4, 5 and 6, the terminal block 100 has a housing 20. As shown in FIG. The housing 20 has an upper cover 20a that forms a top surface and a side surface, and a lower cover 20b that forms a bottom surface. The housing 20 is formed in a box shape by fitting an upper cover 20a to the peripheral edge of a lower cover 20b. The upper cover 20a and the lower cover 20b are made of resin.

A wire hole 21 into which the wire 1 is inserted is formed in a side portion in the front direction of the upper cover 20a. Here, since the terminal block 100 is electrically connected to the three tab terminals 11, there are wire holes 21 into which the three input-side wires 1 are inserted and three wire holes 21 into which the three feed-side wires 1 are inserted. In total, six wire holes 21 are formed.

An insertion hole 22 having a stepped portion for engaging the head of the bolt 2 is formed in the upper surface of the upper cover 20a. The bolt 2 is inserted up to the board 10 and has its head locked to the stepped portion of the insertion hole 22 .

A release button 23 is provided on the upper surface of the upper cover 20a so as to be touched by the operator. The release button 23 can release the wire 1 connected to the terminal block 100 by being pressed by the operator. Here, since the terminal block 100 is electrically connected to three tab terminals 11, three release buttons 23 are provided so as to release the two electric wires 1 connected to each tab terminal 11. FIG. The release button 23 is made of resin.

A terminal hole 24 into which the tab terminal 11 is inserted is formed in the lower cover 20b. Here, since the terminal block 100 is electrically connected to the three tab terminals 11, three terminal holes 24 are formed.

An insertion hole 25 through which the threaded portion of the bolt 2 is inserted is formed in the lower cover 20b. The insertion hole 22 in the upper surface of the upper cover 20a and the insertion hole 25 in the lower cover 20b are aligned with the insertion direction of the bolt 2 so that the bolt 2 penetrates the substrate 10 straight.

A detent protrusion 26 is formed on the surface of the lower cover 20b so as to protrude toward the board 10 and be inserted into the detent hole 13 of the board 10 to restrict unnecessary rotation of the terminal block 100. As shown in FIG. The anti-rotation protrusions 26 are provided side by side in the insertion holes 25 of the bolts 2 in a direction perpendicular to the direction in which the electric wire 1 is inserted into the terminal block 100 . The anti-rotation hole 13 and the anti-rotation protrusion 26 are anti-rotation portions.

As shown in FIG. 6 , the terminal block 100 includes connection fittings 30 inside the housing 20 . The connection fitting 30 is electrically connected to the tab terminal 11 and to the stripped conductor portion 1a of the electric wire 1 inserted into the terminal block 100 . Here, since the terminal block 100 is electrically connected to the three tab terminals 11, three connection fittings 30 to be connected to each tab terminal 11 are arranged. The connection fitting 30 is made of a conductive metal sheet.

The release button 23 is arranged on the upper cover 20 a of the housing 20 and has a leg portion 23 a that protrudes downward from the opening of the upper cover 20 a and engages with the connection fitting 30 . The leg portion 23 a releases the connection between the conductor portion 1 a of the electric wire 1 and the connection fitting 30 by applying an unlocking force to the connection fitting 30 .

Inside the lower cover 20b, there is provided a center guide 27 that enters into the gap 40 in the center of the connection fitting 30 to correct the movement direction of the connection fitting 30. As shown in FIG. Since the gap 40 in the center of the connection fitting 30 is vertically long in the front-rear direction, the center guide 27 is a plate-like body that is thinner than the gap 40 and extends in the front-rear direction. The center guide 27 is provided in the front direction from the tab terminal 11 inserted inside the terminal block 100 . Here, three center guides 27 are provided because three connection fittings 30 are arranged inside the terminal block 100 .

A contact prevention guide 28 is provided inside the lower cover 20b to partition the adjacent connection fittings 30 and prevent the connection fittings 30 from coming into contact with each other. The contact prevention guide 28 is a plate-like body that extends all the way inside the terminal block 100 in the front-rear direction. Here, since three connection fittings 30 are arranged inside the terminal block 100, two contact prevention guides 28 are provided.

<Configuration of Connection Fitting 30>
FIG. 7 is a perspective view showing the connection fitting 30 according to Embodiment 1 of the present invention. FIG. 8 is a side view showing the connection fitting 30 according to Embodiment 1 of the present invention. FIG. 9 is a bottom view showing the connection fitting 30 according to Embodiment 1 of the present invention.

As shown in FIGS. 7, 8 and 9, the connection fitting 30 includes a wire connecting portion 31 and a tab holding portion 32 integrally formed. In other words, the connection fitting 30 is formed by processing and integrating a metal sheet metal that allows electrical connection between the wire connection portion 31 and the tab holding portion 32 . The wire connecting portion 31 is electrically connected to the stripped conductor portion 1a of the inserted wire 1 . Two electric wire connection portions 31 are provided by branching from the main body 33 of the connection fitting 30 in two left and right directions. The tab holding portion 32 fits and electrically connects the tab terminal 11 mounted on the substrate 10 . The main body 33 of the connection fitting 30 is used for the tab holding portion 32 , and the tab holding portion 32 is formed on the inner side of the wire connection portion 31 in the direction in which the wire 1 is inserted into the terminal block 100 . The main body 33 of the connection fitting 30 is formed by bending the original sheet metal so that the flat surface of the original sheet metal is vertical, and bending the original sheet metal into a U shape at the innermost end of the tab holding portion 32 in the direction in which the electric wire 1 is inserted into the terminal block 100 . formed by For this reason, the main body 33 of the connection fitting 30 is composed of two portions of the original sheet metal with a gap 40 extending vertically through the center.

<Structure of Wire Connection Portion 31>
The wire connecting portion 31 has a locking portion 31 a that is connected to the conductor portion 1 a of the wire 1 in the immediate vicinity of the wire hole 21 of the terminal block 100 . The locking portion 31a has a locking piece 31b and a conductive piece 31c. The gap between the locking piece 31b and the conducting piece 31c is narrower than the outer diameter of the conductor portion 1a of the electric wire 1 .

The lock piece 31b has a rectangular shape, is separated except for the lower portion, and is connected to the base portion 31d at the lower portion. The locking piece 31b is slanted from the base 31d with the end 34 directed to the back in the direction in which the electric wire 1 is inserted. The locking piece 31b bites into the conductor portion 1a of the inserted electric wire 1 while bending. For this reason, the edge portion 34 of the locking piece 31b uses the edge portion of the original sheet metal with corners. The end portion 34 of the locking piece 31 b has a first region 34 a that bites into the conductor portion 1 a of the electric wire 1 while bending, and a second region 34 b that engages with the leg portion 23 a of the release button 23 . The end portion 34 of the locking piece 31b having the first region 34a and the second region 34b is formed in a straight line. The first region 34a is provided closer to the main body 33 of the connection fitting 30 than the second region 34b.

The conducting piece 31 c has a flat surface facing downwards facing the locking piece 31 b and is electrically connected to the conductor portion 1 a of the electric wire 1 . The conducting piece 31c is arranged above the locking piece 31b. The front end portion of the conducting piece 31c protrudes further forward in the front direction than the end portion 34 of the locking piece 31b. A notch portion 35 is formed by notching an upward projected area of the conductive piece 31c with respect to the second area 34b. Thereby, the leg portion 23a of the release button 23 passes through the notch portion 35 of the conducting piece 31c and is engaged with the second region 34b of the end portion 34 of the locking piece 31b.

The wire connecting portion 31 has a pressing piece 31e. The pressing piece 31e is arranged on the far side in the direction in which the electric wire 1 is inserted into the electric wire connection portion 31 relative to the locking piece 31b, and presses the conductor portion 1a of the electric wire 1 against the conductive piece 31c. The pressing piece 31e has a rectangular shape, is separated except for the lower portion, and is connected to the base portion 31d at the lower portion. The pressing piece 31e is slanted from the base 31d toward the back in the insertion direction of the electric wire 1 . The distance between the pressing piece 31 e and the conducting piece 31 c is narrower than the outer diameter of the conductor portion 1 a of the electric wire 1 . Considering insertion and withdrawal of the conductor portion 1a of the electric wire 1, the end portion of the pressing piece 31e against which the conductor portion 1a is pressed smoothly contacts the conductor portion 1a of the electric wire 1 on the way to the edge of the original sheet metal. A convex curved surface is formed upward so as to

The wire connecting portion 31 has a base portion 31 d in which the locking piece 31 b and the pressing piece 31 e are connected to the main body 33 of the connection fitting 30 . The base portion 31 d connects the locking piece 31 b to the front of the terminal block 100 and connects the pressing piece 31 e to the rear of the terminal block 100 . The base portion 31d has a flat surface that contacts the bottom surface of the lower cover 20b from the lower end of the main body 33, which is a flat sheet metal, and maintains the connection fitting 30 so that it does not fall down.

<Structure of tab holder 32>
The tab holding portion 32 is formed by using the body 33 of the connection fitting 30 and extending in parallel with the direction in which the wire 1 is inserted into the wire connection portion 31 and connected. The tab holding portion 32 has a pair of contact pieces 32a. A pair of contact pieces 32 a are formed such that the distance L 2 between them is narrower than the thickness La of the flat tab terminal 11 . The pair of contact pieces 32a are fitted to each other by sandwiching the tab terminal 11 with a repulsive force. Thus, the pair of contact pieces 32a has contact points 32b extending in the horizontal direction with the tab terminals 11 interposed therebetween. The pair of contact pieces 32a are cut at both ends in the front-rear direction, and are cut and raised toward a gap 40 penetrating vertically through the center of the main body 33 of the connection fitting 30 to form a mountain fold. The mountain-folded portions of the pair of contact pieces 32a are contacts 32b having spring properties.

It should be noted that the tab holding portion 32 has a sufficient holding force due to holding by a repulsive force. However, if further reliability is required or if there is a risk that the tab holding portion 32 will be stressed by an external factor, the connection fitting 30 may be fixed to the terminal block 100 using a fixing screw. In this case, the fixing screw may be inserted from the upper surface side of the upper cover 20a of the terminal block 100 and fixed on the back side of the substrate 10 using a fixing nut.

<Relationship Between Distance L2 Between Pair of Contact Pieces 32a and Thickness La of Tab Terminal 11>
FIG. 10 is an explanatory diagram showing the relationship between the distance L2 between the pair of contact pieces 32a and the thickness La of the tab terminal 11 according to Embodiment 1 of the present invention, in a vertical cross section taken along line AA in FIG. is. As shown in FIG. 10, the distance L1 between the main bodies 33 of the two metal fittings 30 facing each other is formed in a space wider than the thickness La of the tab terminal 11 . A distance L 2 between the pair of contact pieces 32 a is formed in a space narrower than the thickness La of the tab terminal 11 .

<State in which the pair of contact pieces 32a are fitted to the tab terminals 11>
FIG. 11 is a vertical cross-sectional view showing the terminal block 100 in which the pair of contact pieces 32a are fitted to the tab terminals 11 according to the first embodiment of the present invention. FIG. 12 is an explanatory view showing an enlarged vertical cross section of a state in which the pair of contact pieces 32a are fitted to the tab terminal 11 according to Embodiment 1 of the present invention.

As shown in FIGS. 11 and 12, the tab holding portion 32 holds and fits the flat tab terminal 11 sandwiched between the pair of contact pieces 32a by a repulsive force. When the tab terminal 11 is inserted into the tab holding portion 32, the pair of contact pieces 32a maintains contact with the front and back surfaces of the tab terminal 11 by the repulsive force corresponding to the expansion of the thickness La of the tab terminal 11. are doing. Therefore, even if the tab terminal 11 moves in the extension direction, which is the horizontal direction perpendicular to the plane, it continues to contact the pair of contact pieces 32a due to the repulsive force.

<Operation when inserting electric wire 1>
FIG. 13 is an enlarged vertical cross-sectional view showing a state in which the release button 23 according to Embodiment 1 of the present invention is engaged with the locking piece 31b. As shown in FIG. 13, the leg portion 23a of the release button 23 is engaged with the second region 34b of the end portion 34 of the locking piece 31b through the notch portion 35. As shown in FIG. The release button 23 releases the connection between the conductor portion 1a of the wire 1 and the wire connection portion 31 by applying an unlocking force to the locking portion 31a when pressed by the operator.

FIG. 14 is an explanatory view showing an enlarged vertical cross section of the state in which the conductor portion 1a of the electric wire 1 according to Embodiment 1 of the present invention is inserted into the locking piece 31b. As shown in FIG. 14, the wire 1 is inserted into the wire hole 21 . The end portion 34 of the locking piece 31b in the insertion direction of the electric wire 1 is the first region 34a, and is a portion other than the second region 34b engaged with the leg portion 23a of the release button 23. As shown in FIG. Therefore, the first region 34a bends backward when the electric wire 1 is inserted.

FIG. 15 is an explanatory view showing an enlarged vertical cross section of the state in which the conductor portion 1a of the electric wire 1 according to Embodiment 1 of the present invention is inserted into the locking piece 31b. As shown in FIG. 15, when the wire 1 is completely inserted, the locking piece 31b bites into the conductor portion 1a of the wire 1 while largely bending the first region 34a side in particular. Moreover, the pressing piece 31e presses the conductor portion 1a of the electric wire 1 against the conducting piece 31c.

<Insertion range of electric wire 1>
FIG. 16 is a perspective view showing the relationship between the conductor portion 1a of the wire 1 to be inserted and the lock piece 31b engaged with the release button 23 according to Embodiment 1 of the present invention. As shown in FIG. 16, the wire 1 is directed to the first region 34a of the end 34 of the locking piece 31b. The first area 34 a is an area adjacent to the second area 34 b engaged with the leg 23 a of the release button 23 . In the first region 34a, the conductor portion 1a of the inserted electric wire 1 bites into between the locking piece 31b and the conducting piece 31c to be electrically connected.

<Relationship between the first region 34a and the second region 34b when the electric wire 1 is inserted>
The end portion 34 of the locking piece 31 b has a first region 34 a that bites into the conductor portion 1 a of the electric wire 1 while bending, and a second region 34 b that engages with the release button 23 . The first region 34a bends rearward when the electric wire 1 is inserted. On the other hand, in the second area 34b, the leg portion 23a of the release button 23 prevents the second area 34b from bending, thereby limiting the amount of bending of the first area 34a.

<Allowable deviation range>
The tab holder 32 has a fixing structure that is fixed while allowing a limited range of movement with respect to the substrate 10 . The fixing structure fixes the housing 20 to the board 10 with the bolt 2 and the nut 3, and engages the release button 23 arranged on the housing 20 with the second region 34b of the end 34 of the locking portion 31a to connect. It is configured by limiting the movement of the fitting 30 to a finite deviation tolerance range from the pre-movement state to the post-movement state. The allowable deviation range is due to the amount of deflection of the first region 34a. The fixed structure is the fixed part.

Because of the finite deviation tolerance, the tab terminal 11 has a finite extension length. That is, the length of the flat tab terminal 11 extending parallel to the direction in which the wire 1 is inserted into the wire connection portion 31 is a finite range in which the displacement of the contact 32b with respect to the substrate 10 is allowed by the fixing structure. longer than Thereby, even if the tab holding part 32 moves, the electrical connection between the tab holding part 32 and the tab terminal 11 is maintained.

Here, when the connection fitting 30 having the tab holding portion 32 moves, the gap 40 of the main body 33 of the connection fitting 30 is inserted into the center guide 27, and the movement of the connection fitting 30 is corrected only in the front-rear direction. As a result, even when the connection fitting 30 having the tab holding portion 32 moves when the wire 1 is inserted or tension is applied to the wire 1, there is no displacement in other directions, and even if the movement of the connection fitting 30 is permitted, the terminal can be secured. The platform 100 is less likely to break down.

<Action>
As described above, it is possible to provide an inexpensive terminal block 100 that has reliability of connection when the electric wire 1 is inserted and reliability that is resistant to deterioration over time.

<Effect of Embodiment 1>
According to Embodiment 1, the terminal block 100 includes the wire connection portion 31 that is electrically connected to the stripped conductor portion 1a of the wire 1 . The terminal block 100 includes a tab holding portion 32 for fitting and electrically connecting the tab terminal 11 mounted on the substrate 10 . The tab holding portion 32 and the tab terminal 11 extend parallel to the direction in which the wire 1 is inserted into the wire connection portion 31 and connected.

According to this configuration, even if the connection fitting 30 having the tab holding portion 32 moves when the wire 1 is inserted or tension is applied to the wire 1, the wire 1 extends parallel to the direction in which the wire 1 is inserted into the wire connection portion 31. The connection is continued only by shifting the relative positions of the tab holding portion 32 and the tab terminal 11 . As a result, the tab terminal 11 is not stressed by the movement of the tab holding portion 32 . Therefore, it is possible to suppress breakage of the solder portion of the tab terminal 11 when the tab holding portion 32 moves.

According to Embodiment 1, the terminal block 100 has a fixing structure as a fixing portion in which the tab holding portion 32 is fixed to the substrate 10 while allowing movement within a finite deviation allowable range.

According to this configuration, the range in which the tab holding portion 32 moves on the substrate 10 when the electric wire 1 is inserted or when tension is applied to the electric wire 1 is limited to the finite deviation tolerance range permitted by the fixing structure. . As a result, the relative positions of the tab holding portions 32 mounted on the terminal block 100 and the tab terminals 11 mounted on the board 10 are displaced within the allowable displacement range of the fixing structure while maintaining the connected state.

According to Embodiment 1, tab terminal 11 protrudes from substrate 10 in a flat plate shape. The tab holding portion 32 has a pair of contact pieces 32 a formed so that the distance L 2 between them is narrower than the thickness La of the flat tab terminal 11 . The tab holding portion 32 holds and fits the flat tab terminal 11 sandwiched between the pair of contact pieces 32a by a repulsive force.

According to this configuration, even if the connection fitting 30 having the tab holding portion 32 moves when the wire 1 is inserted or tension is applied to the wire 1, the wire 1 extends parallel to the direction in which the wire 1 is inserted into the wire connection portion 31. The relative positions of the tab holding portion 32 and the tab terminal 11 are shifted while maintaining the connected state.

According to Embodiment 1, the pair of contact pieces 32a has contacts 32b that sandwich the flat tab terminal 11 therebetween. The length of the flat tab terminal 11 extending parallel to the direction in which the electric wire 1 is inserted into the electric wire connection portion 31 is within a finite range of displacement of the contact 32b with respect to the substrate 10, which is allowed by the fixing structure as the fixing portion. longer than allowed.

According to this configuration, even if the tab holding portion 32 moves on the substrate 10 when the electric wire 1 is inserted or tension is applied to the electric wire 1, the length of the tab terminal 11 in the movement direction of the tab holding portion 32 is the contact point 32b. longer than the deviation tolerance limited to the finite range of As a result, the relative positions of the tab holding portion 32 mounted on the terminal block 100 and the tab terminal 11 mounted on the substrate 10 are displaced within the allowable displacement range of the fixing structure while maintaining the connected state.

According to Embodiment 1, the wire connection portion 31 and the tab holding portion 32 are formed in the connection fitting 30 that is integrated.

With this configuration, the number of parts can be reduced, and the terminal block 100 can be manufactured at low cost. Further, when the electric wire 1 is inserted or when tension is applied to the electric wire 1 and the electric wire connection portion 31 moves, the tab holding portion 32 can also move at the same time.

According to Embodiment 1, the terminal block 100 includes the housing 20 in which the connection fittings 30 are arranged.

According to this configuration, the tab holding portion 32 formed in the connection fitting 30 is not exposed to the outside, and conduction failure between the tab holding portion 32 and the tab terminal 11 due to deterioration over time, such as rust, does not occur. durability can be improved.

According to Embodiment 1, the wire connecting portion 31 has the locking portion 31a that bites into and connects to the conductor portion 1a of the inserted wire 1 .

According to this configuration, the wire connection portion 31 is electrically connected to the conductor portion 1 a of the wire 1 .

According to Embodiment 1, the terminal block 100 is arranged in the housing 20, engages with the locking portion 31a, and applies an unlocking force to the locking portion 31a, thereby connecting the conductor portion 1a of the electric wire 1 and the electric wire. A release button 23 for releasing the connection with the connection portion 31 is provided.

According to this configuration, the connection between the conductor portion 1a of the wire 1 and the wire connection portion 31 can be released by applying an unlocking force by pushing down the locking piece 31b of the locking portion 31a.

According to Embodiment 1, the terminal block 100 includes the bolt 2 and the nut 3 as a housing fixing portion that fixes the housing 20 to the board 10 . The fixing structure fixes the housing 20 to the board 10 with the bolt 2 and the nut 3, and engages the release button 23 arranged on the housing 20 with the second region 34b of the end 34 of the locking portion 31a to connect. It is configured by limiting the movement of the metal fitting 30 to a finite deviation tolerance range.

According to this configuration, a finite deviation tolerance range of the tab holding portion 32 can be configured by the fixing structure.

According to the first embodiment, the terminal block 100 includes a detent portion provided in line with the bolt 2 and the nut 3 serving as housing fixing portions in the direction perpendicular to the direction in which the wire 1 is inserted into the wire connection portion 31. It has a detent protrusion 26 and a detent hole 13 as a.

According to this configuration, when the wire 1 is inserted or when the tab holding portion 32 moves on the substrate 10 due to tension applied to the wire 1, the anti-rotation protrusion 26 and the anti-rotation hole 13 prevent the wire 1 in the terminal block 100 from Movement such as rotation in a direction other than the direction of insertion into the wire connecting portion 31 can be restricted.

According to Embodiment 1, the locking portion 31a has the locking piece 31b that bites into the conductor portion 1a of the electric wire 1 while bending. The locking portion 31a has a flat surface facing the locking piece 31b and has a conductive piece 31c electrically connected to the conductor portion 1a of the electric wire 1 .

According to this configuration, the locking portion 31a connected to the conductor portion 1a of the wire 1 in the wire connection portion 31 can be simply configured.

According to Embodiment 1, the end portion 34 of the locking piece 31b has a first region 34a that bites into the conductor portion 1a of the electric wire 1 while bending, and a second region 34b that engages with the leg portion 23a of the release button 23. and have

According to this configuration, the movement of the first region 34a that bends and bites into the conductor portion 1a of the electric wire 1 at the end portion 34 of the locking piece 31b is limited by the second region 34b engaged with the leg portion 23a of the release button 23. Range can be limited. As a result, a finite allowable deviation range of the wire connection portion 31 and the tab holding portion 32 formed in the connection fitting 30 can be configured.

According to Embodiment 1, the wire connection portion 31 is arranged on the far side in the direction in which the wire 1 is inserted into the wire connection portion 31 relative to the locking piece 31b, and the conductor portion 1a of the wire 1 is positioned relative to the conduction piece 31c. It has a pressing piece 31e for pressing.

According to this configuration, the wire connection portion 31 can be electrically connected to the conductor portion 1a of the wire 1 more reliably.

Reference Signs List 1 electric wire 1a conductor portion 2 bolt 3 nut 10 substrate 11 tab terminal 12 insertion hole 13 anti-rotation hole 20 housing 20a upper cover 20b lower cover 21 wire hole 22 insertion hole 23 Release button 23a Leg 24 Terminal hole 25 Insertion hole 26 Anti-rotation projection 27 Center guide 28 Contact prevention guide 30 Connection fitting 31 Wire connection 31a Locking portion 31b Locking piece 31c Continuity piece, 31d base, 31e pressing piece, 32 tab holding portion, 32a contact piece, 32b contact, 33 main body, 34 end, 34a first region, 34b second region, 35 notch, 40 gap, 100 terminal block, 200 power supply.

Claims (9)

A wire connecting portion that is electrically connected by connecting to the stripped conductor portion of the wire,
a tab holder for fitting and electrically connecting the tab terminal mounted on the substrate;
with
The tab holding portion and the tab terminal extend parallel to a direction in which the wire is inserted into the wire connection portion and connected,
The extending direction of the tab holding portion and the projecting direction of the tab terminal projecting upward intersect ,
The wire connection portion and the tab holding portion are formed in an integrated connection fitting,
A housing in which the connection fitting is arranged,
The wire connecting portion has a locking portion that bites into and is connected to the conductor portion of the inserted wire,
A release button is provided in the housing, engages with the locking portion, and releases the connection between the conductor portion of the electric wire and the wire connection portion by applying an unlocking force to the locking portion.
Terminal block. 2. The terminal block according to claim 1, further comprising a fixing portion that fixes said tab holding portion while allowing a limited range of movement with respect to said substrate. The tab terminal protrudes from the substrate in a flat plate shape,
The tab holding portion has a pair of contact pieces formed so that the distance between them is narrower than the thickness of the flat tab terminal, and the flat tab terminal sandwiched by the pair of contact pieces is held by a repulsive force. 3. The terminal block according to claim 1 or 2, which is clamped and fitted. A housing fixing part that fixes the housing to the substrate,
The fixing section fixes the housing to the board by the housing fixing section, engages the release button arranged on the housing with the locking section, and restricts the movement of the connection fitting within the limited range. 3. The terminal block of claim 2 configured by limiting to . 5. The terminal block according to claim 4 , further comprising an anti-rotation portion provided in parallel with the housing fixing portion in a direction orthogonal to a direction in which the electric wire is inserted into the electric wire connection portion. The locking portion includes a locking piece that bites into the conductor portion of the electric wire while bending, and a conductive piece that has a flat surface facing the locking piece and is electrically connected to the conductor portion of the electric wire, The terminal block according to any one of claims 1 to 5 . 7. The terminal block according to claim 6 , wherein the end portion of the locking piece has a first region that bites into the conductor portion of the electric wire while bending, and a second region that engages with the release button. 3. The wire connecting portion has a pressing piece that is arranged further in the direction in which the wire is inserted into the wire connecting portion than the locking piece, and that presses the conductor portion of the wire against the conductive piece. The terminal block according to claim 6 or claim 7 . A wire connecting portion that is electrically connected by connecting to the stripped conductor portion of the wire,
a tab holder for fitting and electrically connecting the tab terminal mounted on the substrate;
with
The tab holding portion and the tab terminal extend parallel to a direction in which the wire is inserted into the wire connection portion and connected,
a fixing part that fixes the tab holding part while allowing a finite range of movement with respect to the substrate;
The tab terminal protrudes from the substrate in a flat plate shape,
The tab holding portion has a pair of contact pieces formed so that the distance between them is narrower than the thickness of the flat tab terminal, and the flat tab terminal sandwiched by the pair of contact pieces is held by a repulsive force. It is sandwiched and fitted with
The pair of contact pieces have contacts sandwiching the flat tab terminals,
A length of the tab terminal extending parallel to the direction in which the electric wire is inserted into the electric wire connecting portion is longer than the finite range in which the displacement of the contact with respect to the substrate is allowed by the fixing portion. .

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