JP5216644B2 - Joint connector - Google Patents

Description

  The present invention relates to a joint connector including a press contact blade.

  The following Patent Document 1 discloses a joint connector 1 as shown in FIG. The joint connector 1 includes a main body 2, a cover 3 assembled to the main body 2 and covering the main body 2, and a plurality of press contact blades 4 fixed to the main body 2. The main body 2 is provided with three sets of pressure contact blade mounting grooves 5 and electric wire pressing grooves 6 and 7 in parallel. An electric wire 8 is pressed against the press contact blade 4. The joint connector 1 can perform current branching for each circuit by the press contact blade 4.

  Regarding the assembly of the main body 2 and the cover 3, four pairs of lock projections 10 are provided on the front-rear position side portion 9 of the main body 2. A pair of lock protrusions 12 are also provided on the left and right side portions 11 of the main body 2. On the other hand, a pair of lock holes 14 are provided at four positions on the front and rear position side portion 13 of the cover 3. A pair of lock holes 16 are also provided in the left and right position side portions 15 of the cover 3. When the main body 2 and the cover 3 are assembled so as to overlap each other, the lock protrusion 10 and the lock hole 14, and the lock protrusion 12 and the lock hole 16 are brought into a locked state at once.

Japanese Utility Model Publication No. 63-112769

  By the way, in the prior art, since there are many places to be locked, it is difficult to smoothly assemble them unless the position of the cover 3 is accurately aligned with the main body 2. Has a point. If there are many places to be locked, it is difficult to cause the cover 3 to fall off, so that the protection by the cover 3 is maintained and useful, but the workability is deteriorated.

  For example, the lock protrusions 12 and the lock holes 16 on the left and right position side portions 11 and 15 are eliminated, and the four lock protrusions 10 and the lock holes 14 on the front and rear position side portions 9 and 13 are connected to the left and right sides of the lock hole 14. If the size of the direction is increased to provide a dimensional margin, this allows smooth assembly even when there are relatively many places to be locked, eliminating the above workability problems. This inventor thinks that it can do. However, in such an idea, since the lock hole 14 has a dimensional allowance, a positional deviation in the left-right direction is generated between the main body 2 and the cover 3 by the given allowance, There is a possibility that the pressing of the electric wire 8 in the press contact state or the pressing of the electric wire 8 to the press contact cannot be reliably performed.

  The present invention has been made in view of the above circumstances, and can improve the workability by providing a dimensional allowance, and can suppress the displacement of the electric wire in the press contact state, or It is an object of the present invention to provide a joint connector capable of surely performing from pressing to pressing of an electric wire.

  The joint connector of the present invention according to claim 1, which has been made to solve the above-mentioned problems, comprises a plurality of metal pressure contact blades that press-contact an electric wire, and a first resin member and a second resin member made of synthetic resin. The first resin member accommodates the electric wire and has a plurality of electric wire arrangement recesses to be assembled with the press contact blade, and the second resin member has electric wire holding ribs at positions corresponding to the electric wire arrangement concave portions. And one or a plurality of locking protrusions that are paired in the front-rear direction of the connector on the front-rear position side of either the first resin member or the second resin member, and the other front-rear position side In the joint connector in which one or a plurality of lock holes that are paired in the front-rear direction of the connector are provided in the portion, the lock projection is opened so as to open in a lateral size larger than the lateral size of the lock protrusion. A hole is formed, and a position restriction convex portion that is paired in the left-right direction of the connector is provided on the left-right position side of either the first resin member or the second resin member, and the other left-right position side The connector is also provided with a position restricting recess that is paired in the connector left-right direction.

  According to the present invention having such a feature, since the lock structure has a large opening for the lock hole, even if the first resin member and the second resin member are not accurately aligned, the lock hole and the lock protrusion It becomes possible to make it possible to lock smoothly. In addition, according to the present invention, since the position restricting convex portion and the position restricting concave portion are provided, even if the first resin member and the second resin member are to be assembled in a state where there is a positional deviation, The positional deviation is corrected by the position regulation convex part and the position regulation concave part, and as a result, the positions of the electric wire arrangement concave part and the electric wire pressing rib can be accurately aligned.

  A joint connector according to a second aspect of the present invention is the joint connector according to the first aspect, wherein the pair of position restricting convex portions are formed in a rib shape and the pair of position restricting concave portions are formed in a groove shape or a step shape. One of the pair of position restricting recesses that is formed into a shape and shortens the length of one of the pair of position restricting protrusions and engages with the shorter position restricting protrusion. The length of is also shortened.

  According to the present invention having such a feature, it is possible to regulate the assembly direction of the first resin member and the second resin member by changing the length. According to the present invention, it is possible to reduce the force applied to the engagement between the position restricting convex portion and the position restricting concave portion by shortening one of the two.

  A joint connector according to a third aspect of the present invention is the joint connector according to the second aspect, wherein a taper is formed at the tips of the pair of position restricting convex portions.

  According to the present invention having such a feature, it is possible to smoothly engage the position restricting convex portion and the position restricting concave portion.

  A joint connector according to a fourth aspect of the present invention is characterized in that, in the joint connector according to the second or third aspect, the pair of position restricting convex portions are formed thick.

  According to the present invention having such a feature, it is possible to prevent deformation such as opening of the position restricting convex portion at the time of positional deviation correction.

  A joint connector according to a fifth aspect of the present invention is the joint connector according to any one of the first to fourth aspects, wherein any one of the pair of lock protrusions is formed between the first resin member and the second resin member. It is characterized in that it can be used as an assembly rotation center.

  According to the present invention having such a feature, the joint connector can be assembled by rotating the first resin member and the second resin member.

  According to the first aspect of the present invention, since the dimensional allowance is provided, there is an effect that the workability can be improved as compared with the related art. Moreover, since it has the structure which prevents position shift, there exists an effect that it can hold down from the press of the electric wire in a press-contact state, or the press of an electric wire to press-contact more reliably than before.

  According to the second aspect of the present invention, the assembling direction can be restricted, and the force applied to the engagement between the position restricting convex part and the position restricting concave part can be reduced. Thereby, there exists an effect that workability | operativity can be improved further.

  According to the third aspect of the present invention, the engagement between the position restricting projection and the position restricting recess can be made smooth. Thereby, there exists an effect that workability | operativity can be improved further.

  According to the fourth aspect of the present invention, since the rigidity of the position restricting convex portion is increased, there is an effect that the positional deviation can be reliably corrected. Thereby, there exists an effect that it can carry out from press-down of the electric wire in a press-contact state, or press of an electric wire to press-contact more reliably.

  According to this invention described in Claim 5, there exists an effect that the more effective structure which concerns on the assembly | attachment of a 1st resin member and a 2nd resin member can be provided.

It is composition explanatory drawing of the joint connector of this invention. It is a perspective view of the joint connector at the time of an assembly | attachment start. It is a figure of the joint connector at the time of an assembly | attachment start, (a) is a front view, (b) is sectional drawing. It is a perspective view of a joint connector just before the end of assembly. It is a figure of the joint connector just before completion | finish of assembly | attachment, (a) is a front view, (b) is sectional drawing. It is a perspective view of the joint connector after assembling. It is a figure of the joint connector after an assembly | attachment, (a) is a front view, (b) is sectional drawing. It is a figure of the joint connector used as a comparative example, (a) is a front view at the start of assembly, and (b) is a front view after assembly. It is a disassembled perspective view of the joint connector of a prior art example.

  The joint connector includes a first resin member and a second resin member that are engaged with each other by a lock structure. The lock structure includes a lock protrusion and a lock hole that opens with a dimensional allowance to the lock protrusion. including. The joint connector has a position restricting convex portion and a position restricting concave portion for restricting the positional deviation between the first resin member and the second resin member having a dimensional allowance.

  The first embodiment will be described below with reference to the drawings. FIG. 1 is a diagram illustrating the configuration of a joint connector according to the present invention. 2 is a perspective view of the joint connector at the start of assembly, FIG. 3 is a front view and a sectional view of the joint connector at the start of assembly, FIG. 4 is a perspective view of the joint connector immediately before the end of assembly, and FIG. FIG. 6 is a perspective view of the joint connector after assembly, and FIG. 7 is a front view and sectional view of the joint connector after assembly.

  In FIG. 1, the joint connector 21 includes a main body 22 (first resin member), a cover 23 (second resin member) assembled to the main body 22 and covering the main body 22, and a plurality of press contact blades 24 fixed to the main body 22. It is configured with. An electric wire 25 (see FIG. 6) is pressed against the press contact blade 24. In this embodiment, it is assumed that the electrical function of the joint connector 21 is the same as the conventional one. Hereinafter, characteristic parts other than the electrical function will be described (the arrow P direction in the figure is defined as the front-rear direction and the arrow Q direction is defined as the left-right direction).

  The main body 22 is a part made of synthetic resin having insulating properties, and includes two wire pressure contact portions 26 and 27 (the number is an example) and three lock portions 28, 29 and 30 (the number is And two position restricting portions 31 and 32. Reference numeral 33 indicates a side portion that is a front-rear position among the four side portions of the main body 22. That is, the reference numeral 33 indicates the front and rear position side. Further, the reference sign 34 indicates a side portion that is a left-right position among the four side portions of the main body 22. That is, the reference sign 34 indicates the left and right position side portions.

  A plurality of wire arrangement recesses 35 are formed in the wire pressure contact portions 26 and 27 so as to raise ribs extending in the front-rear direction. The plurality of wire arrangement recesses 35 are formed so as to extend in the front-rear direction and to be aligned in the left-right direction. The press contact blade 24 is assembled at a predetermined position of each wire arrangement recess 35 (for example, fixed by press fitting or the like). Each electric wire arrangement | positioning recessed part 35 is set according to the diameter of this electric wire 25 (refer FIG. 6).

  Each of the lock portions 28, 29, and 30 has a lock protrusion 36 on the front-rear position side portion 33. The lock protrusions 36 are provided in pairs in the front-rear direction (connector front-rear direction). The lock protrusion 36 has a locking portion and a guide portion that guides to the locking portion, although not particularly designated. The lock protrusion 36 is formed in a claw-like shape as shown.

  The position restricting portions 31 and 32 are provided on the left and right position side portions 34. The position restricting portions 31 and 32 are formed with position restricting concave portions 37 and 38 having a groove shape (or step shape). The position regulating recesses 37 and 38 are formed so that the inner walls are shared with a part of the lock portions 28 and 30. The position restricting recess 37 is formed so that the length in the front-rear direction is shorter than the position restricting recess 38 (it may be the same length).

  The cover 23 is a part made of synthetic resin having insulating properties, and two wire pressing portions 39 and 40 (the number is an example and corresponds to the number of the wire pressure contact portions 26 and 27), and It has three lock parts 41, 42, 43 (the number is an example and corresponds to the number of lock parts 28-30) and two position restricting parts 44, 45. Reference numeral 46 indicates a side portion which is a front-rear position among the four side portions of the cover 23. That is, the reference sign 46 indicates the front and rear position side. Reference numeral 47 indicates a side portion of the four side portions of the cover 23 that is a left-right position. That is, the reference sign 47 indicates the left and right position side portions.

  A plurality of wire pressing ribs 48 are formed in the wire pressing portions 39 and 40. Each electric wire holding rib 48 is arranged and formed so as to correspond to the position of each electric wire arrangement recess 35. The plurality of wire pressing ribs 48 are formed so as to extend in the front-rear direction and to be aligned in the left-right direction. A relief recess 49 for the press contact blade 24 is formed at a predetermined position of each wire pressing rib 48. Each electric wire pressing rib 48 is formed as a portion for pressing the electric wire 25 (see FIG. 6) in a pressure contact state or a portion for pressing the electric wire 25.

  Each of the lock portions 41, 42, 43 has a lock hole 50 in the front / rear position side portion 46. The lock holes 50 are provided in pairs in the front-rear direction (connector front-rear direction). The lock hole 50 is a portion that engages with the lock protrusion 36 and enters a locked state, and is formed in a through hole shape. The lock hole 50 is formed so as to open in a lateral size (dimension B) larger than the lateral size (dimension A) of the lock protrusion 36 (B> A, see FIG. 7).

  The position restricting portions 44 and 45 are provided on the left and right position side portions 47. Position restricting convex portions 51 and 52 having a rib shape are formed on the position restricting portions 44 and 45. The position restricting convex portions 51 and 52 are formed in a shape corresponding to the position restricting recessed portions 37 and 38. The position restricting convex portions 51 and 52 are formed in a thick state that does not open when engaged with the position restricting concave portions 37 and 38. The position regulation convex part 51 is formed so that the length in the front-rear direction is shorter than the position regulation convex part 52 (it may be the same length).

  A taper 53 is formed at the engagement tips of the position restricting convex portions 51 and 52. The taper 53 is a portion for smooth guidance with respect to the position restricting recesses 37 and 38 and is formed so as to be able to contact the walls of the position restricting recesses 37 and 38.

  The press contact blade 24 is a metallic part having electrical conductivity, and is formed so that when an electric wire 25 (see FIG. 6) is inserted, it can bite into this coating and contact an internal conductor. . A known blade is used as the press contact blade 24.

  The operation of assembling the cover 23 to the main body 22 will be described based on the above configuration and structure. In addition, the description regarding the pressure welding of the electric wire 25 (refer FIG. 6) shall be abbreviate | omitted.

  As shown in FIG. 2 from the state of FIG. 1, the assembly is started while the cover 23 is rotated with respect to the main body 22. Specifically, the corresponding lock hole 50 of the cover 23 is inserted into one of the three pairs of lock projections 36 (the back side in the figure), and then the cover 23 is rotated in the direction of arrow R while being assembled to the main body 22. To start. One of the pair of lock protrusions 36 (the back side in the figure) and the lock hole 50 corresponding to the lock protrusion 36 serve as an assembly rotation center between the main body 22 and the cover 23.

  When the assembly is started while the lock hole 50 is inserted into the lock protrusion 36 and the cover 23 is rotated, the lock protrusion 36 is biased to one side of the lock hole 50 that opens largely to the lock protrusion 36 as shown in FIG. Even in this state, as shown in FIGS. 4 and 5, the position restricting convex portion 52 abuts on the position restricting concave portion 38, thereby correcting the position of the cover 23 to the normal position.

  As a result of the above correction, the lock holes 50 engage with the left and right sides of the lock protrusion 36 with dimensional allowances. The corresponding lock hole 50 of the cover 23 is smoothly engaged with the other side (front side in the figure), and the assembled state is completed as shown in FIGS. 6 and 7.

  As shown in the comparative example of FIG. 8, even if the lock hole 50 is formed with a dimensional margin with respect to the lock protrusion 36, the position restricting concave portions 37 and 38 and the position restricting convex portions 51 and 52 ( When the cover 62 does not exist as shown in FIG. 8, the cover 62 is displaced in the left-right direction with respect to the main body 61, and the pressing of the electric wire in the press-contact state or the pressing of the electric wire to the press-contact is surely performed. There is a possibility that it cannot be done.

  As described above with reference to FIGS. 1 to 8, according to the present invention, since the lock hole 50 is largely opened with respect to the lock protrusion 36, the main body 22 and the cover 23 are separated. Even if the positioning is not accurately performed, the lock protrusion 36 and the lock hole 50 can be smoothly locked.

  In addition, according to the present invention, since the position restricting concave portions 37 and 38 and the position restricting convex portions 51 and 52 are provided, even if it is attempted to assemble the main body 22 and the cover 23 in a state where there is a positional deviation, Thus, the positional deviation is corrected by the position restricting concave portion 37 or 38 and the position restricting convex portion 51 or 52, and the positions of the electric wire disposing concave portion 35 and the electric wire holding rib 48 are accurately matched. It is possible to reliably perform pressing or pressing from the electric wire 25 to pressure contact.

  In addition, according to the present invention, since the lengths of the position restricting concave portions 37 and 38 and the lengths of the position restricting convex portions 51 and 52 are changed, the assembly direction of the main body 22 and the cover 23 can be restricted. Yes (effective for preventing incorrect assembly).

  Further, according to the present invention, since the position restricting concave portion 37 and the position restricting convex portion 51 are formed short, the force applied to the engagement at this portion can be reduced.

  Further, according to the present invention, since the rigidity of the position restricting convex portions 51 and 52 is increased, the opening of the position restricting convex portions 51 and 52 can be prevented, and as a result, the positional deviation can be corrected reliably.

  It goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

21 ... Joint connector 22 ... Main body (first resin member)
23. Cover (second resin member)
24 ... Press contact blade 25 ... Electric wire 26, 27 ... Electric pressure contact portion 28, 29, 30 ... Lock portion 31, 32 ... Position restricting portion 33 ... Front / rear position side portion 34 ... Left / right position side portion 35 ... Electric wire placement recess 36 ... Lock protrusion 37, 38 ... Position restricting recess 39, 40 ... Electric wire pressing part 41, 42, 43 ... Lock part 44, 45 ... Position restricting part 46 ... Front / rear position side part 47 ... Left / right position side part 48 ... Electric wire pressing rib 49 ... Escape recessed part 50 ... Lock hole 51, 52 ... Position regulating convex part 53 ... Taper

Claims (5)

A plurality of metal pressure-contact blades that press-contact the electric wire, and a first resin member and a second resin member made of synthetic resin, and the first resin member accommodates the electric wire and becomes an assembly destination of the pressure-contact blade. It has a plurality of electric wire arrangement crevices, and the above-mentioned second resin member has an electric wire holding rib in the position corresponding to each above-mentioned electric wire arrangement crevice, and also any one of the first resin member and the second resin member A joint in which one or a plurality of locking protrusions are provided in the front-rear position side portion and paired in the front-rear direction of the connector, and one or a plurality of locking holes are provided in the other front-rear position side portion. In the connector,
The lock hole is formed so as to open in a lateral size larger than the lateral size of the lock protrusion, and a connector lateral direction is provided on the lateral side of either the first resin member or the second resin member. The joint connector is characterized in that a pair of position restricting convex portions are provided and a position restricting concave portion that is paired in the left-right direction of the connector is also provided on one of the other left and right position side portions. The joint connector according to claim 1, wherein
The pair of position restricting protrusions are formed in a rib shape, the pair of position restricting recesses are formed in a groove shape or a step shape, and the length of either one of the pair of position restricting protrusions A joint connector characterized by shortening the length and shortening either one of the pair of position restricting recesses that engage with the shorter position restricting protrusion. The joint connector according to claim 2,
A joint connector, wherein a taper is formed at the tip of the pair of position restricting convex portions. In the joint connector according to claim 2 or claim 3,
A pair of said position control convex part is formed in thickness, The joint connector characterized by the above-mentioned. The joint connector according to any one of claims 1 to 4,
One of a pair of said lock protrusion is formed so that it can respond | correspond as an assembly rotation center of said 1st resin member and said 2nd resin member. The joint connector characterized by the above-mentioned.

Images