JPS633095Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a joint connector used for connecting branch circuits in wire harnesses of automobiles, etc.

The inventors of the present invention have developed joint connectors of various shapes with the aim of improving workability and reliability when wiring and assembling branch circuits with multiple branch wires, such as automobile wiring harnesses. has been proposed.

As a joint connector previously proposed by the inventors of the present invention, there is a joint connector 1 shown in FIGS. 1 to 4, for example.

This joint connector 1 is composed of a joint terminal 3 to which a branch wire 2 is connected, a housing 4, a pressing member 5, and a short terminal 6. The joint terminal 3 and the short terminal 6 are each made of an integral conductive plate. The housing 4 is formed by cutting and bending a member, and the housing 4 is formed by integrally molding an insulating member such as plastic, and the pressing member 5 is formed by cutting and bending a conductive or insulating plate member.

As shown in FIG. 2, the joint terminal 3 has an overall shape that is almost symmetrical with respect to the axis, and the upper part of the joint terminal 3 has a pressing part 7 to which the branch wire 2 is connected.
A strip-shaped contact piece 8 is connected to the lower end of the crimp portion 7 . The uppermost part of the pressing part 7 is a jacket gripping part 9 having a U-shaped cross section for gripping the jacket of the branch electric wire 2, and the parts on both sides thereof are claws 9a, 9a. Below this jacket gripping part 9 is a wire gripping part 10 which has a U-shaped cross section that is slightly smaller than this jacket gripping part 9 and grips the strands of the branch wire 2. 10 and outer covering gripping part 9
The spaces between the two are connected by a stepped portion 11. The claws 10a, 10a on both sides of this wire gripping part 10
A protrusion 12 is provided at the center thereof. A contact piece 8 is connected to the center of the lower end of this wire gripping part 10 via an inclined plate 13 provided at an angle, and the boundary between the inclined plate 13 and the contact piece 8 is a fold 14. The widths of the contact piece 8, the wire gripping portion 10, and the inclined plate 13 are approximately the same. This contact piece 8
A rectangular locking hole 15 is formed at the center of the width direction of the lower part of the contact piece 8, and each corner of the lower end of the contact piece 8 is chamfered.

The housing 4 is made of an insulating material such as plastic, and as shown in FIG. 3, the external shape is approximately a rectangular parallelepiped, and the upper and lower surfaces thereof are open. (In the following description, among the four surfaces surrounding this upper surface, the side walls in the width direction are referred to as side walls 16, 16, and the side walls in the length direction are referred to as face walls 17, 17.)
The width of the face wall 17 is narrowed below the step 18 in the middle of its height, and the upper and lower edges of the opposing inner surfaces of the face walls 17, 17 are chamfered. ing.

The side walls 16, 16 perpendicular to the face walls 17, 17 are provided with cutouts 19, 19 at their lower ends,
The width of the notch 19 is approximately the same as the distance between the face walls 17 and the inner surfaces of the face walls 17, and the depth thereof is approximately the same as the thickness of the short terminal 6.

The internal space surrounded by the face walls 17, 17 and the side walls 16, 16 includes an upper chamber 20 in which the crimp part 7 of the joint terminal 3 is accommodated, and a contact piece 8 of the joint terminal 3.
It is divided into a middle section 22 provided with clamping holes 21 for clamping the upper part of the housing, and a lower chamber 23 that accommodates the pressing member 5 and the short terminal 6.

The upper chamber 20 includes an upper storage chamber 20a that collectively accommodates the required number of outer cover gripping parts 9 of the crimp parts 7 of the joint terminals 3 with the branch electric wires 2 crimped thereon, and a joint provided below the crimping part 7 with the branch electric wires 2 crimped thereon. Crimp part 7 of terminal 3
It is constituted by eight lower storage chambers 20b that individually accommodate the strand gripping parts 10 of. Upper storage chamber 20a starting from the open surface of the upper end of upper chamber 20
The depth of the joint terminal 3 is greater than the height of the outer cover gripping portion 9 along the axial direction of the joint terminal 3. The lower storage chamber 20b following the upper storage chamber 20a has three ribs 24 parallel to the side wall 16 that divides the upper chamber 20 into four in the longitudinal direction, and a side wall 17 parallel to the side wall 17 that divides the upper chamber into two in the width direction. Upper chamber 20 by rib 25
It is formed by dividing the lower part of the .
The upper ends of these ribs 24 and 25 are located at the step portion 11 of the joint terminal 3 when the joint connector 1 is assembled, and the upper ends are chamfered. The lower end of the rib 25 is located at the lower end of the wire gripping portion 10 of the joint terminal 3 when the joint connector 1 is assembled. The lower end of the rib 25 and the face walls 17, 17 at the same position
bulges out to narrow the lower accommodation chamber 20b to form a bulging portion 26, and the upper surface of this bulging portion 26 has a slope corresponding to the slope of the slope plate 13 of the joint terminal 3. It's summery.

Below the lower storage chamber 20b is a middle section 22, which is narrowed by bulges 26...
Holding the upper part of the contact piece 8 of the joint terminal 3,
A clamping hole 21 for preventing its lateral movement...
is formed. The clamping holes 21 are formed by the bulges 26 in the width direction of the opening, and by the extended portions of the ribs 24 in the longitudinal direction of the opening, and by the side walls 16. convex portion 27,
27. The opening of the clamping hole 21 has the same dimensions as the cross-sectional dimension of the contact piece 8 of the joint terminal 3. The four clamping holes 21 provided in the four joints of the housing 4 have locking step portions 28 associated with the clamping holes 21 to which locking pieces of the short terminal 6, which will be described later, are locked. A groove 29 for forming a lower chamber 23 is provided.

The lower chamber 23 has side walls 16, 16 and face walls 17, 17.
This is a substantially rectangular parallelepiped space surrounded by the flat back surfaces of the bulging portions 26 and 26, and a hollow groove 30 is formed in the upper part, and the lower part thereof is open. Locking step part 2
8 is recessed in the inner surface of the face walls 17, 17 of the lower chamber 23, and its width is narrower than the longitudinal dimension of the opening of the clamping hole 21, and its position is a required distance below the back surface of the bulge 26. Therefore, the groove 29 for forming the above-described locking step 28 is formed from the upper surface of the bulge 26 to the upper inner surface of the wall surface 17 of the lower chamber 23. The size of the lower chamber 23 is
The thickness of the plate of the short terminal 6 is added to the outside and outside of the clamping holes 21, whose longitudinal direction is almost the same as the length dimension of the upper chamber 20, and whose short direction is provided in two rows. The depth is approximately the same as the height of the short terminal 6 on the face wall 17 side.

As shown in FIG. 4, the short terminal 6 consists of a main body part 31 and a ground part 32. Contact plates 34, 34 are provided extending in the vertical direction. The inner side of the upper edge of this contact plate 34 and both corners of the upper edge are chamfered, and housing locking pieces 35 are provided at both upper joints to prevent the contact plate from falling off from the housing 4.
However, a joint terminal locking piece 36 is provided at the lower edge to prevent the joint terminal 3 from falling off, and a joint terminal locking piece 36 extends from the lower end of each joint terminal locking piece 36 to the bottom plate 33 for removing the joint terminal. Holes 37 are provided. The housing locking piece 35 is locked to a locking step 28 provided on the face wall 17 of the lower chamber 23 of the housing 4, and is protruded downward to the outside of the main body 31 by press working. ing. The distance from the upper edge of the contact plate 34 to the locking end 35a of the housing locking piece 35 is the same as the distance from the lower surface of the bulge 26 of the housing 4 to the locking step 28. The width of the locking step portion 28 is smaller than the width of the locking step portion 28. In addition, the joint terminal locking pieces 36...
They are locked into the locking holes 15 of the joint terminal 3, and are protruded downward into the inside of the main body 31 by press working, and these pitches are the same as the pitches of the clamping holes 21 of the housing 4. has been done. The distance from the upper edge of the contact plate 34 to the locking end 36a of the joint terminal locking piece 36 is determined from the distance from the fold 14 of the joint terminal 3 to the lower edge of the locking hole 15 to the distance between the clamping hole 21 of the housing. The size is the same as that obtained by subtracting the depth, and the size of the joint terminal locking piece 36 is smaller than the locking hole 15. The overall size of the main body part 31 is such that its longitudinal direction is approximately the same as the inner dimension between the side walls 16, 16 of the housing 4, and the contact plates 34, 34
The inner dimension between them is approximately the same as the distance between the outer sides of the clamping holes 21 provided in two rows of the housing 4, and the height thereof is such that the contact piece 8 of the joint terminal 3 is completely inserted during assembly. The housing 4 has an inner dimension that can be accommodated in the lower chamber 23 of the housing 4, and an outer dimension that can be accommodated in the lower chamber 23 of the housing 4. A grounding portion 32 is connected to one edge of the bottom plate 33 of the main body portion 31 of the short terminal 6 in the short direction in the direction opposite to the extending direction of the contact plate 34 and perpendicular to the plate surface of the bottom plate 33. The earth part 3
The shape of No. 2 has a circular hole in the center of the disk.

The pressing member 5 is inserted into the inside of the body portion 31 of the short terminal 6, as shown by the arrow in FIG. It is bent into a U-shape. The pressing member 5 consists of a central upper plate (connection part) 38 and side plates 39, 39 connected thereto, and the side plates 39 are divided by cuts 40 to form strip-shaped spring plates 41. ing. The spring plate 41 is strongly inscribed in the inner surface of the contact plate 34 of the short terminal 6 (required contact force of about 500 g), and its width is the same as that of the contact piece 8 of the short terminal 3.
The width is approximately the same as that of the holding holes 21 of the housing 4. Spring plate 4
A square hole 42 is formed in the lower part of the short terminal 6 in order to escape the joint terminal locking piece 36 provided below the short terminal 6 during assembly. It is said to be slightly larger than 36. The outer and both corners of the lower edge of the spring plate 41 are chamfered for convenience during assembly. The size of this pressing member 5 is such that its longitudinal dimension is approximately the same as the longitudinal dimension of the main body portion 31 of the short terminal 6, and its height is as follows:
The height of the inner side of the main body 31 of the short terminal 6 is approximately the same, and the distance between the opposing spring plates 41 is the inner height between the contact plates 34, 34 of the short terminal 6 at the position of the upper plate 38. contact plate 3 at the lower end of spring plate 41.
It is larger than the inner dimension between 4 and 34.

Next, the joint terminal 3 configured as above
The order of assembling the housing 4, the pressing member 5, and the short terminal 6, and their functions will be explained.

First, a fourth
As shown in the figure, the pressing member 5 is connected to the spring plate 41.
...Insert from the bottom side. In this state, the spring plates 41 of the pressing member 5 are in close contact with the inner surfaces of the contact plates 34, 34 of the short terminal 6, and the square hole 42 of the spring plate 41 has a joint terminal locking piece of the short terminal 6. 36, the pressing member 5 hardly moves.

Next, the short terminal 6 into which the pressing member 5 has been inserted is housed in the lower chamber 23 of the housing 4. At this time, the continuous portion of the body portion 31 and the ground portion 32 of the short terminal 6 is inserted into the notch 19 of the side wall 16 of the housing 4, and the housing locking piece 35 of the short terminal 6 is inserted into the notch 19 of the side wall 16 of the housing 4.
... are locked to locking step portions 28 provided on the face wall 17 of the lower chamber 23 of the housing 4, thereby preventing them from falling off from the housing 4.

The joint terminal 3 with the branch wire 2 caulked is inserted into the housing 4 in which the pressing member 5 and the short terminal 6 are housed as described above from the upper chamber 20 side.

The inserted joint terminal 3 has its contact piece 8
is sandwiched between the contact plate 34 of the short terminal 6 and the spring plate 41 of the pressing member 5 to establish an electrical connection. Further, the locking hole 15 is locked with a joint terminal locking piece 36 of the short terminal 6, so that the joint terminal 3 does not fall out from the joint connector 1. Furthermore, the upper part of the contact piece 8 is clamped in the clamping hole 21 of the housing 4, so that the joint terminal 3 will not move even if it is pried.

For such joint connector 1,
Since the shape of the short terminal 6 can be simplified by providing the pressing member 5 having a spring effect, it can be made smaller, and the grounding part 32 can be formed integrally with the main body part 31. . Furthermore, since the short terminal 6 can be processed even from a thick plate, the electrical resistance of the short terminal 6 can be reduced. Therefore, the joint connector 1 using this short terminal 6
It has excellent features such as generating little heat even when used in electrical wiring through which large currents flow, being compact and having a grounding function.

However, when using this joint connector 1, the following drawbacks were discovered, and improvements have been desired.

(a) Since the insertion state of the joint terminal 3 is judged based on the feeling of insertion, the insertion may be incomplete.
In such a case, there is a risk that the joint terminal 3 may fall off while the joint connector 1 is in use, causing an accident in which the electrical connection is broken.

(b) In order to prevent the joint terminal 3 from falling off from the joint connector 1, the locking hole 15 of the joint terminal 3 is locked to the joint terminal locking piece 36 of the short terminal 6, and the pressing member 5 is used to lock the joint terminal 3 is pressed against the short terminal 6, and furthermore, the joint terminal 3 is prevented from being pried by the clamping hole 21 of the housing 4. However, due to limitations on the size of the joint connector 1 and restrictions on the force required to insert the joint terminal 3 (insertion force), it is not always possible to obtain sufficient pull-out strength and prying resistance. The reliability of IntoConnector 1 remains at a low level.

This idea was made in view of the above circumstances,
To provide a highly reliable joint connector in which the inserted state of a joint terminal can be confirmed when assembling the joint connector, and the joint terminal does not fall off after being assembled.

Hereinafter, the joint connector of this invention will be explained in detail with reference to the drawings.

Components that are the same as those of the conventional joint connector 1 shown in FIGS. 1 to 4 are denoted by the same reference numerals, and the description thereof will be simplified.

5 to 10 show an embodiment of this invention, and the reference numeral 50 in the figures indicates a joint connector (hereinafter abbreviated as connector).
This connector 50 consists of a joint terminal 51, a housing 52, a short terminal 53, a pressing member 54, and a key member 55, and is characterized by the contact piece 8 of the joint terminal 51.
In addition to providing an insertion confirmation protrusion 56 at the tip of the
The lower chamber 23 of the housing 52 in which the short terminal 53, the pressing member 54, and the joint terminal 51 are attached.
This is because a key member 55 is provided which is inserted later.

Each component will be explained below.

What is shown in FIG. 6 is a joint terminal 51. The strip-shaped contact piece 8 of this joint terminal 51
is provided with an insertion confirmation protrusion 56. This insertion confirmation protrusion 56 is provided to protrude perpendicularly to the plate surface of the contact piece 8, and in this example, the insertion confirmation protrusion 56 is provided at one tip of the side edge along the axial direction of the contact piece 8. It is provided along the edge to protrude in the same direction as the pawl 10a of the crimp portion 7. In addition, in the case of the joint terminal 51 of this example, the contact piece 8 is connected to the inclined plate 13.
A convex portion 57 is provided over the top of. This convex portion 57 is for improving the strength of the joint terminal 51 near the fold 14.

What is shown in FIG. 7 is a housing 52.
Side wall 1 formed in the lower chamber 23 of this housing 52
There is a key insertion hole 5 in the center of one of 6 and 16.
8 is drilled. After the short terminal 53 and the pressing member 54 are attached to the key insertion hole 58 and the joint terminal 51 is inserted, the key member 55 is inserted into the space 59 (shown in FIG. 5) formed in the lower chamber 23. It is for insertion. Key insertion hole 5
8 has approximately the same cross-sectional shape as the insertion end surface of a key member 55, which will be described later. Also, housing 5
The shape of the clamping holes 60 provided in the interrupted portion 22 of No. 2 is different from that of the conventional one. This is because the insertion confirmation protrusion 56 is provided at the tip of the joint terminal 51, and the shape of the opening of the clamping hole 60 in this example is approximately L-shaped. The tip of the L-shaped horizontal bar is
It is directed toward the rib 25 provided at the center of the housing 52. Furthermore, in the conventional housing 4, the grooves 2 that were provided only with the four holding holes 21...
9... However, in the housing 52 of this example,
It is attached to all the clamping holes 60. This is to ensure that the joint terminal 51 is held uniformly, and the convex portion 57 of the joint terminal 51 fits into this groove 29. A locking step 28 is formed in the face wall 17 of the lower chamber 23 by the roller groove 29 corresponding to each clamping hole 60.
is formed.

What is shown in FIG. 8 is a pressing member 54. The notch 40 of this pressing member 54 is formed deeper than the conventional one, and also cuts out a part of the upper plate 38. This is to avoid the insertion confirmation protrusion 56 of the joint terminal 51 inserted during assembly, and at the same time to improve the springiness and shorten the length of the spring plate 41. Further, a pressing convex portion 61 is formed in the vicinity of the upper plate (connecting portion) 38 of the spring plate 41 so as to face the pressing member 54 outward. This pressing convex portion 61 is for pressing the upper part of the contact piece 8 of the joint terminal 51 against the contact plate 34 of the short terminal 53. Furthermore, the spring plate 41 of this short terminal 53
is formed shorter than the conventional one, and is mounted in the lower chamber 23 of the housing 52 by placing the pressing member on a pressing member supporting claw of a short terminal 53, which will be described later.

What is shown in FIG. 9 is a short terminal 53. In addition to the housing locking piece 35 and the joint terminal locking piece 36, two pressing member supporting claws 62 are each formed on the contact plates 34, 34 of the short terminal 53. This pressing member supporting pawl 62 engages with the tip of the spring plate 41 of the pressing member 54 and pushes it up to a predetermined position. The pressing member supporting claw 62 is bulged upward inside the short terminal 53. Further, the end of the bottom plate 33 of the short terminal 53 on the side opposite to the ground portion 32 is cut out in the middle, and is used as a key member removal hole 63. This key member removal hole 63 is used when removing the key member 55 from the assembled connector 50, as will be described later.

What is shown in FIG. 10 is a key member 55.
The key member 55 is made of synthetic resin or the like, and the connector 5
When assembling 0, the space 5 of the housing 52 is finally
9. At the time of insertion, the key is inserted through the key insertion hole 58 of the housing 52 from the insertion end surface 55a side on the right side in FIG. 10a. This key member 55 includes a head portion 66 and a foot portion 67 that form an inscribed surface 65 that is inscribed in the spring plate 41 of the pressing member 54 during insertion. The head 66 prevents the pressing member 54 from deforming inward, and
Its cross-sectional shape is approximately the same as the cross-sectional shape of the space 59, and in this example, it has a trapezoidal shape that gradually expands downward.

The foot portion 67 is provided at the bottom of the head portion 66 along the insertion direction of the key member 55, and has a thickness of:
It is formed thinner than the head 66. This is to avoid the insertion confirmation protrusion 56 of the joint terminal 51 when assembling the connector 50. Both sides of the foot portion 67 are provided with a joint terminal insertion confirmation groove (hereinafter abbreviated as insertion confirmation groove) 68, It is said to be 68.
Further, the bottom surface of the head 66 forming this insertion confirmation groove 68 is connected to the insertion confirmation protrusion 5 of the joint terminal 51.
6 to prevent the joint terminal 51 from falling off.

The insertion confirmation groove 68 is formed along the insertion direction of the key member 55, and its height is higher than the insertion confirmation protrusion 56 of the joint terminal, and its depth is greater than the insertion confirmation protrusion 56 during assembly. It is designed so that it will not collide with you.

The end of the leg portion 67 opposite to the insertion end surface 55a is
This is a slip-off prevention piece 70. This slip-off prevention piece 7
0 is separated from the head 66 and bent laterally to prevent the inserted key member 55 from falling out from the key insertion hole 58,
This has the effect of increasing the feeling of insertion.

The length of the key member 55 in the insertion direction is the head 66.
and the foot portion 67 are different. The head portion 66 is formed longer than the inner dimension between the housing 52 and the side walls 16, 16, and the foot portion 67 is formed slightly shorter than the inner dimension between the side walls 16, 16.

Next, the assembly method and operation of the connector 50 having such a configuration will be explained.

To assemble the connector 50, first, the pressing member 54 and the short terminal 53 are assembled and then housed in the lower chamber of the housing 52. Next, the joint terminal 51 is inserted into the clamping hole 60 of the housing 52 with the insertion confirmation protrusion 56 facing the central rib 25 of the housing 52. After this, the key member 55 is inserted through the key insertion hole 58 of the housing 52.
is inserted into the space 59 of the lower chamber 23 of the housing 52 from its insertion end surface 55a side.

At this time, the slip-off prevention piece 70 of the key member 55 is deformed along the extension direction of the foot portion 67, passes through the key insertion hole 58, and returns to its original state when it is accommodated in the lower chamber 23. In the returned state, the slip-off prevention piece 70 abuts against the side wall 16 of the housing 52, so that the key member 55 does not fall off from the housing 52. Further, the end of the head 66 opposite to the insertion end surface 55a engages with the key insertion hole 58 of the housing 52. Furthermore, in the connector 50 assembled in this manner, the insertion confirmation protrusion 56 of the joint terminal 51 is located in the joint terminal insertion confirmation groove 68 of the key member 55.

Further, if it is discovered that the joint terminal 51 has been inserted incorrectly after assembly, the joint terminal 51 can be removed as described below.

First, insert a thin rod into the key member removal hole 63 of the short terminal 53, pry up the slip-out prevention piece of the inserted key member 55, and immediately remove the key member 55 from the key insertion hole 53 of the housing 52.
extract it from Next, a thin rod is inserted into the joint terminal removal hole 37 of the short terminal 53, thereby bending the spring plate 41 of the pressing member 54 inward, and then the locking piece 1 of the joint terminal 51
5 to the joint terminal locking piece 3 of the short terminal 53
6, then pull out the joint terminal 51 from the housing 52.

In the connector 50 having such a structure, if the joint terminal 51 is incompletely inserted, the insertion confirmation protrusion 56 is at a position other than the predetermined position, that is, the insertion confirmation protrusion 56 corresponds to the insertion confirmation groove 68 of the key member 55. Not in position. Therefore, when attempting to insert the key member 55 into the lower chamber 32, the key member 55 abuts against the protrusion 56 at a position outside the predetermined position, making it impossible to insert the key member 55, and thereby incomplete insertion of the joint terminal 51 is discovered.

In addition, in the assembled state, joint terminal 5
Since the insertion confirmation protrusion 56 of No. 1 is locked to the drop-off prevention stage 69 of the key member 55, the joint terminal 5
1 will not fall off.

Furthermore, the spring plate 41 of the pressing member 54 is
Inward deformation is prevented by the inner surface 64 of the inserted key member 55. For this reason, the joint terminal 51 does not separate from the contact plate 34 even if it is twisted, and therefore does not interfere with electrical contact. In addition, the locking hole 15 of the joint terminal 53 and the joint terminal locking piece 36 of the short terminal 53 are never unlocked, and this also prevents the joint terminal 51 from falling off. .

In the above description, the spring plate 41 is connected to the pressing member 54 by the upper plate 38, and the upper plate 38 is used so as to be positioned on the middle section 22 side of the housing 52 during assembly. However, it is also possible to use a pressing member in which the plate connecting the spring plate 41 during assembly is located on the bottom plate 33 side of the short terminal 53.

Further, the means for preventing the key member 55 from falling off is as follows:
The key member 55 is not limited to the method using the above-mentioned slip-off preventing piece 70, but the key member 55 may be fixed using an adhesive, or the hook may be attached to the housing 52 or the key member 55.
5, etc., to prevent the key member 55 from falling off.

Furthermore, in order to more securely insert the key member 55, a head fitting hole into which the head 66 of the key member 55 fits is bored in the side wall 16 opposite to the side wall 16 in which the key insertion hole 58 is provided. At the same time, when the key member 55 is inserted into the housing 52 by slightly extending the side head 66 of the insertion end surface 55a of the key member 55, the head 66 of the key member 55 fits into the head fitting hole and the key insertion hole. 58 may be engaged with. By doing so, the insertion state of the joint terminal 51 inserted into the end of the housing 52 can be confirmed more reliably.

According to the joint connector of this invention, the insertion state of the joint terminal can be confirmed by inserting the key member, and the key member prevents the joint terminal from falling off after being inserted, so reliability is improved. You can get high quality connectors.

[Brief explanation of the drawing]

Figures 1 to 4 show conventional joint connectors, in which Figure 1 is a partially sectional perspective view showing the assembled state of the joint connector, and Figure 2 is a perspective view showing the joint terminal. , Figures 3a to 3d show the housing, where a is a plan view;
b is a front view, c is a cross-sectional view taken along the - line of figure a, d is a partially sectional side view, Fig. 4 is a perspective view showing the pressing member and the short terminal, and Figs. 5 to 10 are this diagram. Fig. 5 a to c show the assembled state of the joint connector, in which a is a longitudinal sectional view along the width direction, and b is a longitudinal cross-sectional view along the width direction.
is a vertical sectional view along the length direction, c is a partially cutaway plan view, FIGS. 6 a and b show the joint terminal, a is a front view, b is a side view, and FIGS. 7 a to e indicates the housing, a is a plan view,
b is a cross-sectional view taken along line B-B in figure a; c is a plan view seen from the bottom; d is a side view; e is a cross-sectional view taken along line E-E in figure a; and Figures 8 a to c show the pressing member. Something,
a is a plan view, b is a side view, c is a cross-sectional view taken along the - line of figure a, FIGS. 9 a to c show short terminals, a is a plan view, b is a partially sectional side view 10.c is a sectional view taken along the line -XI of a, and FIGS. 10a to 10c show the key member, in which a is a side view, b is a plan view, and c is a side view. 2... Branch electric wire, 7... Crimp part, 8... Contact piece,
16...Side wall, 17...Front wall, 20...Upper chamber, 2
2...middle section, 23...lower chamber, 33...bottom plate, 3
4...Contact plate, 38...Top plate (connection part), 41...
... Spring plate, 50 ... Joint connector (connector), 51 ... Joint terminal, 52 ...
Housing, 53... Short terminal, 54... Pressing member, 55... Key member, 56... Insertion confirmation protrusion, 58... Key insertion hole, 59... Space, 60
...Holding hole, 65...Internal surface, 68...Joint terminal insertion confirmation groove (insertion confirmation groove).

Claims (1)

[Scope of Claim for Utility Model Registration] A joint terminal having a crimp part connected to a branch wire, a contact piece connected to the crimp part, and an insertion confirmation protrusion provided at the tip of the contact piece. The overall shape is approximately a hollow rectangular parallelepiped, and the upper chamber is open at the top and accommodates the crimping part of the joint terminal, and is provided below the upper chamber, through which the contact piece of the joint terminal is inserted. A housing comprising: a middle part forming a clamping hole that clamps the upper part of the housing to prevent its movement; and a lower chamber provided below the middle part and from which a lower part of a contact piece of a joint terminal projects. A short terminal having a generally U-shaped cross section and having a contact plate erected on the bottom plate that contacts the contact piece of the joint terminal housed in the lower chamber and protruding into the lower chamber; a pressing member having a substantially U-shaped cross section and having a spring plate erected at the connecting portion to urge the short terminal to come into close contact with the contact plate of the short terminal; the short terminal and the pressing member are attached, and the joint terminal is inserted. The press member is inserted into the space formed in the lower chamber of the housing through the insertion hole formed in the side wall of the lower chamber, and has an inscribed surface that prevents deformation of the pressing member, and a joint formed along the insertion direction. A joint connector comprising a key member having an insertion confirmation groove that avoids a terminal insertion confirmation protrusion.