JP3094141B2 - Jumper wire and jumper wire connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jumper line for electrically connecting circuit patterns formed on a printed wiring board and a connection structure for attaching the jumper line to the printed wiring board.

[0002]

2. Description of the Related Art As is well known, a large number of electronic components are mounted on a printed wiring board, and circuit patterns for connecting these electronic components are also complicated and diverse. Generally, circuit patterns are designed so as to avoid intersection between different circuit patterns. However, jumper wires may be used due to restrictions on component layout, board shape, and the like. FIG.
7 to 29 show an example of a conventional jumper wire and its connection structure. First and second circuit patterns 63 and 6 connected by a jumper line 62 are provided on the printed wiring board 61.
4 are formed, and the first and second circuit patterns 6 are formed.
A third circuit pattern 65 is formed between 3 and 64. When the first and second circuit patterns 63 and 64 are interconnected by the jumper line 62, as shown in FIG. 29, the insertion holes 63a and 64a formed in the first and second circuit patterns 63 and 64, respectively. After inserting the end of the jumper wire 62 from the back side of the printed circuit board 61,
The end is bent as shown in FIG.
64 was soldered 66,67. The printed wiring board 61 is provided on a case 68 and a jumper wire 62 is provided.
Was housed in a recess 69 formed in the case 68.

[0003]

However, in such a conventional structure, the printed wiring board is formed of a flexible printed circuit (FPC).
FPC due to high temperature during soldering
There was a problem of dissolving the material PET (polyethylene terephthalate). In addition, after the jumper wire is inserted into the insertion hole, bending and soldering are required, and the number of work steps is large, resulting in an increase in cost.

Therefore, some proposals have already been made to solve the above problems. For example, Japanese Utility Model 3-28
No. 772 discloses that a tongue piece having both ends of a circuit connection piece (jumper wire) bent and inserted into a conductive hole of a printed wiring board in which a conductive cylindrical member connected to a circuit pattern is fitted. Later, a configuration for soldering is described. However, in the case described in this publication, since the conductive cylindrical member is formed integrally with the circuit pattern, complicated machining is required. In addition, since the circuit connecting piece is soldered after the cylindrical member is inserted into the insertion hole, improvement in workability or the like cannot be achieved. Furthermore, since the tongue piece is soldered,
There has been a problem that it is not easy to remove the circuit connecting piece for maintenance or the like.

In Japanese Utility Model Laid-Open No. 57-59476, a continuous portion is formed in advance on a conductor layer (circuit pattern), and when the conductor layer is connected to another conductor layer, the continuous portion is formed on a substrate. A configuration is described in which it is peeled off from another conductor layer, stacked on another conductor layer, and screwed. Thus, the one described in this publication has advantages such as making soldering unnecessary and detachable. However, there is a problem that the two conductor layers cannot be easily connected or removed by a one-touch operation because of the peeling of the continuous portion and the screwing operation. An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a jumper wire that can be easily attached to and detached from a printed wiring board and that can connect circuit patterns with one another by one-touch operation. It is another object of the present invention to provide a jumper wire connection structure that does not require soldering of a jumper wire and a circuit pattern and that can be reliably connected.

[0006]

A jumper wire according to the present invention for achieving the above object is a jumper wire interconnecting first and second circuit patterns formed on a printed wiring board superposed on a case. Long , elastic
At least the print is provided at both ends in the longitudinal direction of the conductor.
Fits into a fitting hole that penetrates the wiring board and is drilled in the case
And insert the first and second circuit patterns into the fitting holes.
And push the first and second circuit patterns
From the contact portion that is elastically contacted and the locking portion that locks to the case.
Are formed integrally with each other. According to another aspect of the present invention, there is provided a connection structure of a jumper line, wherein the first and second circuit patterns formed on a printed wiring board superposed on a case are interconnected by a jumper line. , Wherein the jumper wire is made of an elastic conductor and provided at both ends with a connecting portion comprising at least a contact portion elastically contacting the first and second circuit patterns and a locking portion engaging with the case. Using, to form a fitting hole for fitting the connection portion in the case, corresponding to the fitting hole in the printed wiring board,
The first and second circuit patterns are formed by forming notches in which the ends of the first and second circuit patterns are arranged, and the connection portions are inserted into the fitting holes. The contact portion is pushed into the hole to elastically contact the circuit pattern, and the locking portion engages with the case.

[0007]

According to the jumper wire of the present invention, the connecting portion having the contact portion elastically contacting the circuit pattern and the engaging portion engaging with the case is provided at both ends of the conductor. By fitting, the contact portion can be brought into contact with the circuit pattern to be connected, and can be connected without soldering. Also, the jumper wire prevents the escape from the case by engaging the locking portion with the case,
By releasing this engagement, it can be easily removed from the case. Further, according to the jumper wire connection structure, the circuit pattern is attached to the support side plate portion forming the fitting hole formed in the case, and the contact portion forming the connection portion of the jumper wire is elastically contacted with this circuit pattern. Since the contact portion constituting the connection portion is pressed against the contact side plate portion constituting the fitting hole, a plurality of circuit patterns can be connected with a single touch by a jumper wire. Further, by positioning the printed wiring board in the case and providing a protrusion or the like which acts as a spacer for the jumper wire, it is possible to prevent undesired contact between the jumper wire and the circuit pattern.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, preferred embodiments of a jumper line and a connection structure of the jumper line according to the present invention will be described with reference to the drawings. 1 to 8 show a first embodiment of the present invention. First, with reference to FIG. 1, a description will be given of the relationship between the jumper wires and the connection structure of the jumper wires in the present embodiment. The jumper wire 1 is formed by providing a pair of connecting portions 3 at both ends of a long conductor having elasticity, that is, a conductor 2 made of a strip-shaped metal member.
(Abbreviated as C) 11 has a length in the axial direction corresponding to the connection structures 12 and 13 provided in the connection structure 11.

Next, the structure of the jumper line 1 will be further described with reference to FIGS. FIG. 2 is an enlarged perspective view showing the configuration of the connecting portion 3, and FIG. 3 is an enlarged sectional view of the connecting portion. The jumper wire 1 has a pair of connecting portions 3 provided at both ends of the conductor 2. Since the connecting portions 3 are symmetrical to each other, only one configuration will be described here. The connecting portion 3 includes a pair of elastic portions 4 and 5 whose ends are elastically operated by being bent into a U-shaped cross section, and each of the elastic portions 4 and 5 projects outward in the middle. It has a hemispherical contact portion 6 and a contact portion 7. That is, a contact portion 6 is formed on the elastic portion 4 located on the inner side of the pair of connecting portions 3, and a contact portion 7 is formed on the elastic portion 5 located on the outer side. A pair of locking portions 8 bent outward from both ends of the elastic portion 5 are formed near the base of the connecting portion 3.
A shoulder 1 extending horizontally extends above both ends of the elastic portion 4.
0 is formed. Further, a groove 9 is formed in the conductor 2 between the connecting portions 3 along the longitudinal direction, and the groove 9 prevents the conductor 2 from being deformed by bending.

The distal end (free end) of the elastic body 5 is bent outward in the longitudinal direction, and as shown in FIG. When the jumper line 1 is connected to the circuit patterns 14 and 15,
A gap substantially equal to the height H is formed between the circuit pattern 16 (see FIG. 1) and the conductor 2. Further, a space W is formed between the outer surfaces of the pair of locking portions 8. The distance W is set in relation to the distance between one side of the fitting holes 22 and 23 described later, and will be described later.
Description will be made in connection with 2, 23. Since the connecting portion 3 is formed by bending a metal plate into a U-shape, when the elastic portion 5 is urged in the direction of arrow A shown in FIG. 3, an elastic force in the direction of arrow B is generated. Then, jumper wire 1 and circuit pattern 1
The contact with the jumper wires 4 and 15 and the one-touch connection of the jumper wire 1 to the case 21 and the prevention of detachment are performed by using this elastic force. 2 and 3 show the contact portion 6 and the contact portion 7.
Is press-formed and provided in a hemispherical shape.
7 is not limited to this, and may be, for example, formed in a curved cross section.

Next, the connection structures 12 and 13 of the jumper line 1 will be described with reference to FIGS. FIG. 4 shows a specific example of a circuit pattern of the FPC 11 to which the jumper line 1 is applied. In the drawing, each connection structure 12 of a first circuit pattern 14 and a second circuit pattern 15 is shown.
13 are interconnected by a jumper line 1 as shown by imaginary lines. Since the connection structures 12 and 13 are symmetrical, only one connection structure 13 will be described here. FIG. 5 shows an enlarged plan view of the connection structure 13.
As shown in FIG. 2, the connection structure 13 forms a cut 17 in the FPC 11 corresponding to the end of the second circuit pattern 15, and the FPC 11 disposed in the cut 17 removes the resist of the circuit pattern 15 and 15A is exposed like a tongue. By the way, since both the FPC 11 and the circuit pattern 15 are flexible, when the connection portion 3 is brought into contact with the connection portion 3 unless the circuit pattern 15 is supported undeformedly,
Elastically, in other words, it cannot be brought into contact in a pressed state. Therefore, the case 21 of FIG. 6 corresponding to FIG. 4 is provided with fitting holes 22 and 23 in which the connecting portion 3 can be fitted and the conductor 15A of the circuit pattern 15 is elastically contacted by the connecting portion 3. ing. That is, the connection structures 12 and 13
Is not formed on the FPC 11 alone, but includes a part of the case 21.

Next, the fitting holes 22, 23 will be described with reference to FIGS. 7 and 8.
The hole is formed in correspondence with the notch 17 of the FPC 11 shown in FIG. Here, since the fitting holes 22 and 23 are provided in a symmetrical structure, only the fitting hole 23 will be described. In addition,
FIG. 7 is a sectional view taken along line AA of FIG. Fitting hole 2
Reference numeral 3 denotes a substantially rectangular opening as shown in FIGS. 1 and 6, and an opening edge on the side supporting the circuit pattern 15 forms a supporting side plate portion 24 vertically suspended as shown in FIG. An abutting side plate portion 26 is formed in which an opening edge on a side facing the side plate portion 24 is vertically provided. Further, the support side plate portion 24 is slightly bent in the direction in which the lower end closes the fitting hole 23, and forms a locking projection piece 25 with which the locking portion 8 of the jumper wire 1 is engaged. FP
As is clear from FIG. 8, when the connecting portion 3 of the jumper wire 1 is inserted into the fitting hole 23, the elastic contact portion 5 (see FIG. Deformation is regulated by abutting against. The contact portion 6 of the jumper wire 1 elastically contacts the contact side plate portion 26. The fitting hole 2
7, the vertical side plates 24a and 24b are vertically provided at both edges of the opening except for the support side plate 24 and the contact side plate 26, as shown in FIG. I understand that there is. Then, the vertical side plate portions 24a, 2
4b is set to be slightly larger than the distance W between the locking portions 8 described with reference to FIG.
You can insert without rattling when you insert.

The connection structures 12 and 13 are formed by a notch 17 formed in the FPC 11 and a fitting hole 2 formed in the case 21.
2, 23 are superposed in a state where they are aligned. In this state, when the connection portion 3 of the jumper wire 1 is inserted into the connection structures 12 and 13, the circuit patterns 14 and 15 are folded back at the opening edges of the fitting holes 22 and 23 as shown in FIG. 15A is elastically contacted by the contact portion 7.
As a result, the jumper line 1 and the circuit patterns 14 and 15 are connected. The connection method will be described in more detail with reference to FIGS.

As is apparent from FIG. 1 or FIG. 4, the length of the jumper wire 1 is provided in accordance with the connection structures 12 and 13. Therefore, after the connecting portion 3 is aligned with the connecting structures 12 and 13 and the connecting portion 3 is inserted into the connecting structure 13 as shown by an arrow C in FIG. 9, the contact portion 6 of the elastic portion 4 (see FIG. 2). Presses the contact side plate portion 26, and the contact portion 7 of the elastic portion 5 presses the conductor portion 15 </ b> A of the circuit pattern 15 whose position is regulated by the support side plate portion 24. When the connecting portion 3 is further pushed in, as shown in FIG.
Abut. Thereby, the elastic portion 5 is bent inward and deformed. When the connecting portion 3 is further pushed in in this state, the locking portion 8 gets over the locking protrusion 25 as shown in FIG. 11, and the elastic portion 5 is elastically restored and opens outward. As a result, the locking portion 8 is positioned on the lower surface of the locking projection piece 25 and locked so as not to come out. The above-described pushing action of the connecting portion 3 can be easily performed with one touch by the elasticity shown by the arrows A and B in FIG.

Referring again to FIG. 8, in a state where the locking portion 8 is locked to the locking projection 25, the contact portion 6 presses the contact side plate portion 26, and the contact portion 7 is To the conductor 15A. The connection of such a jumper wire 1 is as follows.
This is performed simultaneously for the connection structures 12 and 13. Moreover,
Since the locking portion 8 is elastically locked with the locking projection 25, the elastic portion 5 is urged inward by a finger or the like to release the engagement between the locking portion 8 and the locking projection 25. Thus, the jumper wire 1 can be easily removed. In addition, connection structure 1
A third circuit pattern 16 is wired between 2 and 13, and the bending end of the elastic portion 5 and the shoulder 10 of the elastic portion 4 are FP
By abutting on C11, jumper line 1
11 so as to straddle the third circuit pattern 16 while maintaining a predetermined interval between the third circuit pattern 16. As described above, the jumper line 1 and the connection structures 12 and 13 in this embodiment are
Circuit pattern 1 with one-touch operation and no soldering required
4, 15 can be connected and easily removed.

Next, a second embodiment of the present invention will be described with reference to FIGS. The main difference between the second embodiment and the first embodiment is that the connecting portion 3 of the jumper wire 1 is formed in a wavy shape in the side surface and the opening edges of the fitting holes 22 and 23 of the case 21. Connection part 3 and circuit pattern 1
That is, the projections 31 and 32 for securely pressing the substrates 4 and 15 against each other are provided. That is, the connection portion 3 is formed with a peak 33 first, then a valley 34 from the center toward the end, and the end is directed upward. Then, a circular concave portion is formed on both side surfaces of the peak portion 33 by pressing or the like, and this concave portion serves as a contact portion 35 for pressing the circuit patterns 14 and 15 against the peak portion 33. In addition, a pair of locking portions 36 are provided below the valley portion 34 at substantially the width intervals of the jumper line 1.
The length h of the claw portion of the locking portion 36 is set slightly smaller than the thickness t of the case 21 in the fitting holes 22 and 23. In addition, since the jumper wire 1 is made of a metal plate, the connection portion 3 has elasticity.

On the other hand, on the edges of the fitting holes 22 and 23, a semi-cylindrical projection 3 corresponding to the peak 33 of the jumper wire 1 is provided.
1, 32 are formed. That is, the arc surfaces of the protrusions 31 and 32 are arranged along the arc surface of the peak 33 of the jumper wire 1. When the FPC 11 and the case 21 are overlapped, the circuit patterns 14 and 15
23 is straddled so as to be closed, and the leading end rides over the projections 31 and 32. The connection of the jumper wire 1 is performed such that the projections 31 and 32 are covered with the peaks 33, and the valleys 34 are pushed into the fitting holes 22 and 23. When the end of the jumper wire 1 is pushed, the valley 34 is further lowered, and FIG.
As shown in (2), the engaging portion 36 engages with the lower surface side of the fitting hole 23, and the jumper wire 1 cannot be pulled out. Moreover, the length h of the claw portion of the locking portion 36 and the thickness t of the case 21 are h <t.
Since the connection portion 3 has elasticity, the peak portion 33 is attracted to the protrusion portions 31 and 32.

It should be noted that the circuit patterns 14 and 15 previously covered on the projections 31 and 32 in the structure of this embodiment.
Is covered by the peak 33, and the peak 33 is strongly pulled toward the protrusions 31 and 32 by the elasticity of the connecting portion 3 and the locking action. As a result, almost the entire end portions of the circuit patterns 14 and 15 are elastically contacted with the connection portion 3, and the contact portion 35 is particularly strongly elastically contacted with the end portions of the circuit patterns 14 and 15. Therefore, also in this embodiment, the jumper wire 1 and the circuit pattern 1 can be formed by a simple operation that can be said to be almost one touch.
4, 15 can be connected, and furthermore, the connection can be surely made without the need for soldering. In order to remove the jumper wire 1, the end portion of the jumper wire 1 is urged toward the center so that the valley portion 34 is bent and deformed, and the locking portion 36 is removed from the case 2.

By the way, since the FPC 11 has flexibility, it may be considered that the third circuit pattern 16 contacts the lower surface of the jumper line 1 by bending and deforming as shown in FIG. 8 during use. Can be Conversely, a certain force acts on the jumper wire 1 to deform the jumper wire 1, and a circuit pattern 16 of the FPC 11 in which a part thereof is kept flat.
It is also conceivable that they may come into contact. In order to prevent such an unexpected situation, various measures can be taken for both the jumper wire 1 and the case 21.

Next, as a third embodiment of the present invention, a jumper wire configured to prevent the above problem from occurring will be described. The jumper wire 1 in this embodiment is
A spacer 4 having a protrusion 41A as shown in FIG. 14 at a position on the lower surface side of the conductor 2 straddling the third circuit pattern 16
1 is provided. The protrusion 41A is provided in the circuit pattern 1
A bridge girder or a comb-tooth type provided at a position that does not hang on 6,
The FPC 11 can be suppressed to the case 2 at important points. In addition, the projection 41A can prevent an undesired contact between the circuit pattern 16 and the jumper wire 1 in combination with the above-described pressing action. Instead of providing the spacer 41, a projection may be formed by bending the conductor 2 itself.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. In this embodiment, the contact between the jumper line 1 and the circuit pattern 16 is prevented by the boss 42 provided on the case 21. The connection structure of the jumper line 1 may be the same as in each of the above embodiments. Case 21
A column-shaped boss 42 is protrudingly provided at a substantially intermediate position between the fitting holes 22 and 23 as shown in FIG.
Is formed with an insertion hole 43 through which the boss 42 is inserted. When the FPC 11 is overlaid on the case 21, the boss 42 is inserted through the insertion hole 43 as shown in FIG. In this state, when the jumper wire 1 is connected in the same manner as in each of the above embodiments, the boss 42 abuts substantially at the center of the lower surface of the jumper wire 1, that is, the lower surface of the center of the conductor 2, and supports the jumper wire 1. become. Therefore, even if a force urging downward from the upper portion of the jumper wire 1 acts, the jumper wire 1 is not easily deformed, so that undesired contact with the circuit pattern 16 can be prevented.

Further, by setting the inner diameter of the insertion hole 43 to be slightly smaller than the diameter of the boss 42, the lifting of the FPC 11 can be prevented. By doing so, it is possible to prevent deformation of the jumper wire 1 and to prevent undesired contact with the circuit pattern 16 and also prevent contact with the jumper wire 1 due to deformation of the FPC 11. In addition,
The number of the bosses 42 and the number of the insertion holes 43 are appropriately set according to the length of the jumper wire 1 and the like.

Next, a fifth embodiment of the present invention will be described with reference to FIGS. In this embodiment, similarly to the fourth embodiment, the contact between the jumper wire 1 and the circuit pattern 16 is prevented by the T-shaped rib 44 provided on the case 21. The connection structure of the jumper wire 1 is as follows. It may be the same as the above embodiments. The case 21 has fitting holes 22 and 23.
17, a rib 44 having a T-shaped cross section as shown in FIG. 17 is protruded, and a rectangular insertion hole 45 through which the rib 44 is inserted is formed in the FPC 11.
The lower side of the rib 44 is open, but this is due to the mold structure during molding.

When the FPC 11 is superimposed on the case 21, the ribs 44 are inserted through insertion holes 45 each having a tongue-shaped opening edge facing each other, as shown in FIG. In this state, when the jumper wire 1 is connected in the same manner as in each of the above embodiments, the rib 44 abuts on the substantially central portion of the lower surface of the jumper wire 1,
The jumper line 1 will be supported. Therefore, even if a force urging downward from above acts on the jumper wire 1, the jumper wire 1 is not easily deformed, so that undesired contact with the circuit pattern 16 can be prevented. In the present embodiment, since the rib 44 is formed in a T-shape, the jumper wire 1 can be supported over a wide range, and the contact with the circuit pattern 16 can be more reliably prevented. In addition, the formation position and the number of the ribs 44 are not limited to the embodiment,
It can be expanded as needed.

Next, a sixth embodiment of the present invention will be described with reference to FIGS. In this embodiment, similarly to the fifth embodiment, the contact between the jumper wire 1 and the circuit pattern 16 is prevented by the rib 46 provided on the case 21. May be the same as In the case 21, a rib 4 having an inverted L-shaped cross section as shown in FIG.
6, and an insertion hole 47 through which the rib 46 is inserted is formed in the FPC 11. In addition, the insertion hole 4
7 has a part of the opening edge formed in a tongue shape. Case 21
When the FPC 11 is superimposed on the FPC 11, the rib 46 is inserted into the insertion hole 47 as shown in FIG. In this state, when the jumper wire 1 is connected in the same manner as in each of the above-described embodiments, the rib 46 abuts substantially the center of the lower surface of the jumper wire 1 and the jumper wire 1
Will be supported. Therefore, even if a force that urges the jumper wire 1 downward from above acts, the jumper wire 1 is not easily deformed, and undesired contact with the circuit pattern 16 can be prevented.

Next, a seventh embodiment of the present invention will be described with reference to FIGS. In this embodiment, as in the sixth embodiment, the contact between the jumper wire 1 and the circuit pattern 16 is prevented by the configuration of the case 21. The connection structure of the jumper wire 1 is the same as in each of the above embodiments. May be. A concave portion 51 is formed in the case 21 at a substantially intermediate position between the fitting holes 22 and 23, and a columnar rib 52 is protruded at a substantially intermediate position between the concave portions 51. On the other hand, the FPC 11a on which the third circuit pattern 16 is formed, which is a target for preventing contact with the jumper line 1, is separated from the FPC 11 on which the circuit patterns 14 and 15 are formed. And FPC11a
Is formed with an insertion hole 53 for inserting the rib 52 at a position corresponding to the rib 52.

When the FPC 11a is superimposed on the case 21, the FPC 11a is bent so as to be along the concave portion 51 as shown in FIG. In this state, when the jumper wire 1 is connected in the same manner as in each of the above embodiments, the jumper wire 1 is located just above the concave portion 51 and the rib 52. Accordingly, the interval between the jumper line 1 and the FPC 11a is the sum interval S of the interval La between the jumper line 1 and the surface of the case 21 and the depth Lb of the concave portion 51, as shown in FIG. As compared with the configuration of the embodiment, the interval is increased corresponding to the depth Lb of the concave portion 51. Therefore, even if the FPC 11a bends and deforms, the circuit pattern 16 and the jumper wire 1 are more difficult to contact. Further, even if the jumper wire 1 is deformed downward for some reason, the jumper wire 1 comes into contact with the rib 52, so that the circuit pattern 1
6 is prevented from coming into contact with the jumper wire 1 and the circuit pattern 16 is more reliably prevented.

Next, an eighth embodiment of the present invention will be described with reference to FIGS. 24 is an exploded perspective view showing a configuration of a jumper wire and a connection structure, FIG. 2 is a perspective view in a mounted state, and FIG. 3 is an enlarged sectional view of a main part. The FPC 11 and the case 21 are configured in substantially the same manner as in each of the above embodiments. That is, the FPC 11 includes the circuit patterns 14 and 15
A notch 17 is formed at the end of the tongue, and the surface resist of the circuit patterns 14 and 15 is removed to provide a tongue shape exposing the conductor portion 15A. The case 21 is provided with fitting holes 22 and 23 having bottoms formed in a rectangular cross section and opened at positions corresponding to the ends of the circuit patterns 14 and 15. As shown in FIG. 26, the fitting holes 22 and 23 have a curved opening at the side of the support side plate portion 24 that supports the circuit patterns 14 and 15, and a contact side plate facing the support side plate portion 24. At the upper end of the part 26, a jumper wire 1
A locking projection 25A for locking A is provided.

The jumper line 1A has the same configuration as the embodiment shown in FIGS. 1 to 8 except for the connection portion 3A. Therefore, the same reference numerals are given to the same portions, and the description will be omitted. The connecting portion 3A is formed in a substantially box shape in which both ends of the conductor 2 are suspended in correspondence with the cuts 17 of the FPC 11, and a contact portion 6A which is in close contact with the contact side plate portion 26 of the fitting holes 22, 23;
An elastic portion 5A is formed so that the tip of the conductor 2 elastically contacts the support side plate portion 24 and is folded downward from above so as to enter the inside of the box. The elastic portion 5A has a circuit pattern 14,
In order to press the 15 conductor portions 15A against the supporting side plate portion 24, a contact portion 7A protruding outward is formed. A locking window 28 into which the locking projection 25A is engaged is provided in the contact portion 6A.
Is open. Note that a third circuit pattern 16 is wired between the circuit patterns 14 and 15.

The mounting of the jumper wire 1A according to the above configuration is performed by superposing the cutout 17 of the FPC 11 on the fitting holes 22 and 23 of the case 21 in an aligned state, and then inserting the connecting portion 3A into the fitting holes 22 and 23. It is performed by That is, the connection portion 3A formed in a substantially box shape is fitted into the fitting holes 22 and 23 having a rectangular cross section substantially in conformity with each other.
As a result, the contact portion 6A is brought into close contact with the contact side plate portion 26, and the elastic portion 5A is brought into contact with the circuit patterns 14, 15 to bend the circuit patterns 14, 15 into the fitting holes 22, 23, Further, the contact portion 7A elastically contacts the conductor portion 15A. The engaging projection 25A engages with the engaging window 28 in a state where the connecting portion 3A is in contact with the bottoms of the fitting holes 22 and 23, so that the jumper wire 1A is not dropped from the case 21. Is prevented.

According to the above configuration, the FPC is directly wired to the outer surface of the electrical component case such as a speedometer, and the jumper wire is applied to the FPC to improve the assemblability of the electrical component as a whole and to improve the automatic assembly. It is possible to assemble and eliminate variations in quality. Also, the assembly cost is reduced.

[0032]

As described above, the jumper wire according to the present invention has at least a contact portion and a connection portion having a locking portion or a locking window at both ends of the conductor, and has a contact portion on a circuit pattern to be connected. The circuit patterns are engaged with the case in a state where they are elastically contacted, so that the circuit patterns can be connected to each other without soldering.
Further, the jumper wire can be easily attached to and detached from the case by the engagement between the engaging portion or the engaging window and the case.

Further, according to the jumper wire connection structure of the present invention, the contact portion of the jumper wire is brought into elastic contact with the circuit pattern whose position is regulated by the support side plate portion of the fitting hole, and the contact side plate portion of the fitting hole is provided. Then, the contact portion of the jumper wire is pressed, and the locking portion or the locking window of the jumper wire is engaged with the locking projection. Therefore, according to the jumper wire having the above-described structure and the connection structure of the jumper wire, the jumper wire can be pressed against the circuit pattern by the elasticity of the connection portion, and can be easily attached without soldering. In addition, the jumper wire is locked with the locking portion or the locking window with the locking projection piece so that the jumper wire cannot be pulled out of the case and can be easily removed by one-touch operation using the elasticity of the connection portion. Workability at the time of assembling electronic devices can be greatly improved.

Further, by providing a projection or the like acting as a spacer for another circuit pattern on the jumper wire, undesired contact between the jumper wire and the other circuit pattern can be prevented, and the electronic device using the printed wiring board can be prevented. The reliability of the equipment can be greatly improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a configuration of a jumper line and a connection structure according to a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view illustrating a configuration of a connection unit.

FIG. 3 is a cross-sectional view of a main part showing a configuration of a connection unit.

FIG. 4 is a plan view illustrating a configuration of a printed wiring board.

FIG. 5 is an enlarged plan view showing a configuration of a connection structure.

FIG. 6 is a plan view showing a configuration of a case.

7 is a sectional view taken along line AA of FIG. 6, showing the shape of the fitting hole.

FIG. 8 is a cross-sectional view showing a state where a jumper wire and a connection structure are attached.

FIG. 9 is an enlarged cross-sectional view showing an initial state of fitting into the fitting hole in the process of connecting the jumper wires.

FIG. 10 is an enlarged cross-sectional view showing a state in which a jumper wire is being fitted into a fitting hole during a connection process.

FIG. 11 is an enlarged cross-sectional view showing a state of engagement with a fitting hole in a process of connecting a jumper wire.

FIG. 12 is an exploded perspective view of a jumper line and a connection structure according to a second embodiment of the present invention.

FIG. 13 is an enlarged sectional view of a main part showing connection of jumper lines.

FIG. 14 is an enlarged sectional view of a jumper line showing a third embodiment of the present invention.

FIG. 15 is an exploded perspective view of a jumper line and a connection structure according to a fourth embodiment of the present invention.

FIG. 16 is an enlarged sectional view of a main part showing support of a jumper wire.

FIG. 17 is an exploded perspective view of a jumper line and a connection structure according to a fifth embodiment of the present invention.

FIG. 18 is an enlarged sectional view of a main part showing support of a jumper wire.

FIG. 19 is an exploded perspective view of a jumper line and a connection structure according to a sixth embodiment of the present invention.

FIG. 20 is an enlarged sectional view of a main part showing support of a jumper wire.

FIG. 21 is an exploded perspective view of a jumper line and a connection structure according to a seventh embodiment of the present invention.

FIG. 22 is a perspective view showing a configuration of a jumper line and a connection structure.

FIG. 23 is an enlarged sectional view of a main part showing a connecting operation of jumper wires.

FIG. 24 is an exploded perspective view of a jumper line and a connection structure according to an eighth embodiment of the present invention.

FIG. 25 is a sectional view showing a state where a jumper wire is attached.

FIG. 26 is an enlarged sectional view of a main part showing connection of jumper lines.

FIG. 27 is a cross-sectional view of a main part showing a connection configuration of a conventional jumper line.

FIG. 28 is a plan view of a main part showing a connection configuration of a conventional jumper line.

FIG. 29 is an exploded perspective view showing a conventional jumper wire connection operation.

[Explanation of symbols]

 1, 1A jumper wire 2 conductor 3, 3A connecting part 4, 5, 5A elastic part 6, 6A contact part 7, 7A contact part 8, 36 locking part 11 printed wiring board (FPC) 12, 13 connection structure 14, 15, 16 Circuit pattern 21 Case 22, 23 Fitting hole 24 Support side plate portion 25 Locking projection piece 26 Contact side plate portion 28 Locking window 31, 32 Projection portion 42, 44, 46, 52 Rib 35 Contact portion 43, 45, 47, 53 Insertion hole 51 Recess

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenji Yagi 1-7-1 Yokoi, Shimada-shi, Shizuoka Yazaki Keiki Co., Ltd. (56) References JP-A-7-85910 (JP, A) (58) Investigated Field (Int.Cl. ⁷ , DB name) H01R 11/01 H01R 12/04 H05K 1/11

Claims (6)

(57) [Claims] 1. A jumper wire for interconnecting first and second circuit patterns formed on a printed wiring board superposed on a case, wherein at least two ends of the long conductor having elasticity in the longitudinal direction are provided.
Both penetrate the printed wiring board and pierce the case.
The first and second circuit patterns are inserted into the fitting holes provided.
And the first and second circuits are pushed into the fitting hole.
The contact part which elastically contacts the pattern and the case locks
A jumper wire, wherein a connection portion comprising a locking portion is formed integrally . 2. A printed wiring board superimposed on a case.
The first and second circuit patterns formed in
In the connection structure of a jumper wire for more interconnecting, it is made of an elastic conductor, and at least both ends are provided with a front end.
A contact portion elastically contacting the first and second circuit patterns;
A connection part comprising a locking part engaged with the case;
Using a jumper wire, insert the connection part into the case
Forming a fitting hole, and forming the fitting hole in the printed wiring board;
And the ends of the first and second circuit patterns are
Forming a notch disposed therein, and connecting the connection portion to the fitting hole
The first and second circuit patterns
Is pushed into the fitting hole, and the contact portion is
Elastic contact with the pattern, and the locking portion engages with the case
A jumper wire connection structure. 3. The first and second pushers pushed into the fitting holes.
And the first and second circuit patterns are in contact with each other.
The supporting side plate that regulates the deformation of the pattern is
3. The jean according to claim 2, wherein the jean is vertically provided.
Connection structure of cable. 4. The case is opposed to the supporting side plate.
And a contact side plate portion hanging from the fitting hole is provided.
By inserting the connecting part, the connecting part comes into contact and elasticity
The jumper wire according to claim 2, wherein the jumper wire is deformed.
Connection structure . 5. A printed circuit board which penetrates the printed circuit board.
Support the jumper wire and the jumper wire and the print
A projecting body that keeps a predetermined distance from the wiring board is attached to the case.
3. The jumper wire according to claim 2, wherein the jumper wire is protruded.
Connection structure . 6. A recess for accommodating the printed wiring board.
And the jumper wire penetrating the printed wiring board
Between the jumper wire and the printed circuit board.
A protrusion which is maintained at a predetermined interval is provided in the recess.
3. The jumper wire connection structure according to claim 2,