WO2007013325A1

WO2007013325A1 - Connection structure for split blocks

Info

Publication number: WO2007013325A1
Application number: PCT/JP2006/314172
Authority: WO
Inventors: Ryo Hagio; Makoto Sunohara; Hirofumi Wada
Original assignee: Sumitomo Wiring Systems, Ltd.
Priority date: 2005-07-26
Filing date: 2006-07-18
Publication date: 2007-02-01
Also published as: JP2007037267A

Abstract

An electric junction box body is split into a first block and a second block. A female terminal receiving section for receiving a female terminal is provided at a split end of at least either of the blocks, and the female terminal is connected to an inner circuit of the at least either of the blocks. On the other hand, a male terminal receiving section for receiving a male terminal is provided in the other block, and the male terminal is connected to an inner circuit of the other block. When the female and male terminal receiving sections are fitted to each other, the female and male terminals are fitted to each other to complete a circuit connection between the first block and the second block. Locking claws for engaging with each other are provided at peripheral walls of the female receiving section and the male terminal receiving section, and the female terminal and the male terminals are not in contact with each other until the locking claws are finally engaged.

Description

Specification

Split block connection structure

Technical field

TECHNICAL FIELD [0001] The present invention relates to a connecting structure of divided blocks, and more particularly, to electrically and mechanically integrate divided blocks obtained by dividing an electric junction box in accordance with the division of a wire harness. It prevents half-fitting between each other.

Background art

[0002] Conventionally, wire harnesses that are routed in automobiles have been reduced in weight and diameter by dividing the original wire harness into multiple parts for the purpose of improving the efficiency of the power distribution system. , Sharing and simplification of wire handling may be attempted.

As described above, the wire harness divided into a plurality of parts is manufactured in individual assembly processes. However, the wire harness connected to the electrical junction box is usually connected to the electrical junction box. In order to deliver in such a state, it is necessary to divide the electrical junction box into multiple parts along with the division of the wire harness, and to combine the divided electrical junction boxes later.

As the electrical junction box as described above, the present applicant provides an electrical junction box 1 shown in FIG. 9 in Japanese Patent Laid-Open No. 2004-166322 (Patent Document 1). The electrical junction box 1 is formed by combining the first block 2 connected to the divided wire harness W / H1 and the second block 3 connected to the wire harness W / H2. Specifically, the pressure contact tab 4a of the first bus bar 4 serving as the internal circuit of the first block 2 is accommodated in the terminal accommodating portion 2a of the first block 2, while the second bus bar serving as the internal circuit of the second block 3 is accommodated. When the tab 5a of 5 is accommodated in the terminal accommodating portion 3a of the second block 3, and the locking portion 2b of the first block 2 and the locking portion 3b of the second block 3 are locked together, the terminal accommodating portion 2a 3a is fitted, and the press contact tab 4a and the tab 5a are connected.

With the electrical junction box 1, the internal circuit of the first block 2 and the internal circuit of the second block 3 can be connected simultaneously with the assembly of the first block 2 and the second block 3.

However, the lock portion 2b of the first block 2 and the lock portion 3b of the second block 3 are completely mouth-coupled, and the press-contact tab 4a and the tab 5a may come into contact with each other even when half-fitted. This place In this case, if energization is confirmed by the continuity test, the first block 2 and the second block 3 may be mounted in the automobile with the semi-fitted state. Thus, when the vehicle is in a state where the first block 2 and the second block 3 are half-fitted, then the lock between the first block 2 and the second block 3 is released and the pressure tab 4a and the tab 5a are disconnected. There is a risk of impairing the reliability of the electrical connection due to the non-contact state. Patent Document 1: Japanese Patent Application Laid-Open No. 2004-166322

Disclosure of the invention

Problems to be solved by the invention

[0005] The present invention has been made in view of the above problems, and the first block side terminal and the second block side terminal until the divided first block and second block are completely locked together. An object of the present invention is to make it possible to detect half-fitting between the first block and the second block by a continuity test by setting the terminals so that they do not contact each other.

Means for solving the problem

[0006] In order to solve the above-mentioned problems, the present invention provides an electric junction box main body divided into a first block and a second block divided end, and one of the first block and the second block. While providing a female terminal accommodating part for accommodating the female terminal connected to the internal circuit, a male terminal accommodating part for accommodating the male terminal connected to the internal circuit is provided on the other block or V block. The first block and the second block are connected by fitting the female terminal and the male terminal.

Locking claws are provided on the peripheral walls of the female terminal accommodating portion and the male terminal accommodating portion, and the female terminal and the male terminal are not in contact with each other until the locking claws are permanently locked. A connecting structure of divided blocks characterized by the above is provided.

[0007] According to the above configuration, when the first block and the second block are half-fitted, the male terminal and the female terminal connected to the internal circuit of the first and second blocks are prevented from contacting each other. Therefore, the internal circuits of the first and second blocks are connected to each other only after the first and second blocks are completely fitted.

That is, as long as the internal circuits of the first and second blocks are connected to each other, the first block and the second block are always completely fitted. Therefore, if the conduction between the first and second blocks is confirmed in the continuity test after connecting the first block and the second block, the first The block and the second block are securely fitted. On the other hand, the first block and the second block are in a semi-fitted state if no conduction between the first and second blocks is confirmed in the continuity test. Thus, the fitting state between the first block and the second block can be confirmed by the continuity test of the first and second blocks.

Therefore, it is possible to prevent a situation in which the internal circuits of the first and second blocks are connected to each other but the first block and the second block are half-fitted, and the first block and the second block are half-fitted. It is possible to improve the reliability of the electrical connection that is not mounted on the automobile in the mated state.

[0008] Specifically, the first block is used as a standby block, and the female terminal accommodating portion having an upper end opening is provided, and the upper end of the lock piece connected to the peripheral wall of the female terminal accommodating portion with a gap is provided. While the first locking claw is provided,

The second block is provided with the male terminal accommodating portion having a lower end opening, and the peripheral wall force of the male terminal accommodating portion is protruded with a U-shaped locking piece inserted into the gap of the first block. A long second lock claw that is engaged with the first lock claw of the first block is provided, and the male and female terminals until the second lock claw is permanently engaged with the engagement lower end surface of the first lock claw. Enter as a setting that does not allow contact.

[0009] According to the above configuration, the second lock claw is longer in the half-fitted state of the first block and the second block than in the state in which the first block and the second block are fitted. The second block is placed higher by as much. As described above, since the height position of the second block varies greatly between the fitted state and the half-fitted state, when the first block and the second block are in the half-fitted state, the inside of the first and second blocks Terminals connected to the circuit can be made non-contact with each other.

The invention's effect

[0010] As described above, according to the present invention, when the first block and the second block are half-fitted, the male and female terminals connected to the internal circuits of the first and second blocks Therefore, the internal circuits of the first and second blocks are connected to each other only after the first and second blocks are completely fitted together.

Therefore, it is possible to prevent a situation in which the internal circuits of the first and second blocks are connected but the first block and the second block are in a semi-fitted state. It is possible to improve the reliability of the electrical connection that is not mounted on the automobile in the half-fitted state.

Brief Description of Drawings

FIG. 1 (A) is a plan view of an electrical junction box according to the present invention, and (B) is a front view of the same.

FIG. 2A is a plan view of a first block, FIG. 2B is a front view of the same, and FIG. 2C is a perspective view of a lock portion.

[FIG. 3] (A) is a bottom view of the first block, and (B) is a left side view.

4A is a plan view of a second block, FIG. 4B is a front view of the same, and FIG. 4C is a perspective view of a lock portion.

[FIG. 5] (A) is a bottom view of the second block, and (B) is an XX cross-sectional view of (A).

6A is a cross-sectional view showing a half-fitted state of the first block and the second block, and FIG. 6B is a cross-sectional view showing a fitted state of the first block and the second block.

[Fig. 7] (A) is a plan view of the lower case, and (B) is a front view of the same.

[FIG. 8] (A) is a plan view of a state in which the first block is fitted to the lower case, and (B) is an enlarged view of the main part of the lock part.

[FIG. 9] (A) and (B) are diagrams showing a conventional example.

Explanation of symbols

[0012] 10 Electrical junction box

20 1st block

21a Split end

26 Busbar

27 Circuit connection

27b Female terminal housing

27c Female relay terminal (female terminal)

27e Lock piece

27f 1st lock claw

30 2nd block

31a Split end 36 Busbar

37 Circuit connection

37b Male terminal housing

37c Male tab (male terminal)

37e Lock piece

37f 2nd lock claw

40 Lower case

W / H1 Wire harness connected to the first block

W / H2 Wire harness connected to second block

BEST MODE FOR CARRYING OUT THE INVENTION

An embodiment of the present invention will be described with reference to the drawings.

1 (A) and 1 (B) show the electrical junction box 10 of the embodiment. The first block 20 and the second block 30 are divided into two along the central line to be connected to separate wire harnesses. And a lower case 40 that covers the upper surface of the lower case 40 (not shown).

As shown in FIG. 2 (A), the first block 20 has a substantially rectangular shape in plan view, and an electrical component E such as a relay or a fuse is placed at a predetermined position on the upper surface of the main body portion 21 made of synthetic resin. An electric component housing part 22 that can be mounted is provided. On the lower surface side of the main body 21, there is provided a connector part 25 for connecting the connector and terminals of the wiring harness WZH1 introduced into the first block 20, and the inside of the main body part 21 is shown in FIG. As described above, a bus bar 26 constituting a required circuit is internally provided between the connector portion 25 and the electrical component housing portion 22. A circuit connection portion 27 for electrical and mechanical connection with a second block 30 described later is provided at the approximate center of the split end 21a in the main body portion 21.

As shown in FIGS. 2 (A) and 2 (B), the circuit connecting portion 27 includes two female terminal accommodating portions 27b that protrude upward while being surrounded by a groove portion 27a. The terminal accommodating portion 27b accommodates two female relay terminals (female terminals) 27c connected to the bus bar 26. This relay terminal 27c accommodates the counterpart terminal in a state where it can be received from above. The circuit connector 27 is connected to the first block 20 and the second block with the mating terminal connected to the relay terminal 27c. A lock portion 27d for connecting the block 30 is further provided. The lock portion 27d is a lock piece that is integrally protruded upward from the peripheral wall of the female terminal accommodating portion 27b and a gap S at a position entering the center from the two female terminal accommodating portions 27b on the upper surface of the main body portion 21. 27e and a first lock claw 27f (FIGS. 6A and 6B) provided at the upper end of the lock piece 27e. The outer surface of the first lock pawl 27f is continuous with the upper end inclined surface 27f-1, the vertical surface 27f-2 that is continuous with the tip of the upper end surface 27f-1, and hangs downward, and the lower end of the vertical surface 27f-2. It consists of a locking lower end surface 27f-3 that consists of a horizontal surface.

On the other hand, as shown in FIG. 4 (A), the second block 30 has a square shape with one corner cut out in plan view, and the upper surface of the synthetic resin main body 31 is not As in the case of 1 block 20, an electrical component accommodating portion 32 that can mount electrical components E such as relays and fuses at predetermined positions is provided. As shown in FIG. 4 (B), a connector part 35 for connecting the connector and terminals of the wire harness WZH2 introduced into the second block 30 is provided on the lower surface side of the main body part 31. As shown in FIG. 5 (A), a bus bar 36 that constitutes a required circuit is housed between the connector portion 35 and the electrical component housing portion 32. A circuit connection portion 37 for making electrical and mechanical coupling with the circuit connection portion 27 of the first block 20 is similarly provided at substantially the center of the split end 31a in the main body portion 31.

As shown in FIG. 5 (B), the circuit connecting portion 37 includes a frame portion 37a that can be fitted in the groove portion 27a of the circuit connecting portion 27 of the first block 20, and a male terminal in the frame portion 37a. The accommodating portion 37b accommodates two male tabs (male terminals) 37c that are connected to the bus bar 36, rise up, and then turn downward and extend downward. The male tab 37c is arranged at a position corresponding to the relay terminal 27c of the first block 20, and when the first block 20 and the second block 30 are coupled, the male tab 37c is inserted into the relay terminal 27c to electrically Connection is possible.

[0018] A lock portion 37d that can be locked to the lock portion 27d of the first block 20 is further provided at the center of the outer surface of the frame portion 37a. The lock portion 37d includes a U-shaped lock piece 37e that can be rubbed with one end as a fulcrum, and a second hook claw 37f that is long in the vertical direction and protrudes from the outer surface of the lock piece 37e. It consists of. The outer surface of the second lock claw 37f is a locking upper end surface 37f-1, which is a horizontal force, a vertical surface 37f-2 which is continuous with the tip of the locking upper end surface 37f-1, and hangs downward, and the vertical surface 37f-2. The lower end surface 37f-3, which is the inclined surface force that is continuous with the lower end of the surface, becomes the force. 2nd lock claw 37f When the first block 20 and the second block 30 are mated, the first block 20 side relay terminal 27c and the second block side male tab 37c first contact each other. As shown in FIG. 6 (B), the distance L2 is greater than the distance L2 from the position where the first block 20 and the second block 30 are completely fitted to each other to the tip position of the male tab 37c.

When the second block 30 is assembled to the first block 20 with the first block 20 as a standby block, the circuit of the second block 30 is inserted into the groove 27a of the circuit connecting portion 27 of the first block 20. The frame portion 37a of the connecting portion 37 also fits upward force, and the male tab 37c in the male terminal accommodating portion 37b of the second block 30 is connected to the relay terminal 27c in the female terminal accommodating portion 27b of the first block 20. Inserted.

[0020] FIG. 6 (A) shows that the upper end inclined surface 27f-1 of the first lock claw 27f of the first block 20 and the lower end surface 37f-3 of the long second lock claw 37f of the second block 30 are shown. The abutted half-fitted state is shown. In this state, as compared with the state in which the first lock claw 27f and the second lock claw 37f are permanently locked, the second block 30 is at least the length L1 of the second lock claw 37f with respect to the first block 20. Is placed at a high position. Therefore, the tip of the male tab 37c of the second block 30 is also arranged at a position higher by at least LI (> L2) than in the fully locked state, and the middle terminal 27c and the second block 30 of the first block 20 are arranged. No contact is made with the male tab 37c, and the internal circuits of the first and second blocks 20, 30 are not connected to each other.

On the other hand, FIG. 6 (B) shows that the lock piece 37e of the second block 30 is inserted into the gap S between the peripheral wall of the female terminal accommodating portion 27b of the first block 20 and the lock piece 27e, and the lock piece 37e The upper end surface 37f-l of the second lock claw 37f is finally locked to the lower end surface 27f-3 of the first lock claw 27f of the lock piece 27e, and the second lock claw 37f and the second lock claw 37f are locked. This shows a state where the lock part 37d of the block 30 is completely engaged. In this state, the male tab 37c of the second block 30 is inserted into the relay terminal 27c of the first block 20, and the internal circuits of the first and second blocks 20 and 30 are electrically connected.

[0022] Further, on the outer peripheral surface of the main body 21 of the first block 20, lock portions 23a and 23b for locking and coupling with mouth portions 41a and 41b of the lower case 40 described later are provided. The lock portions 23a and 23b of the main body portion 21 are provided in a positioning recess 23c formed on the outer peripheral surface, and are composed of a lock piece 23d that can be stowed with the lower end as a fulcrum and a lock claw 23e. The Yes.

Furthermore, lock rods 24a and 24b for coupling to lock portions 33a and 33b of the second block 30 described later are provided on both sides of the split end 21a of the main body portion 21. In the lock rods 24a and 24b, a lock claw 24d having a lower surface as a locking surface protrudes from the upper end of the outer surface of the convex portion 24c provided on the outer peripheral surface of the main body portion 21.

[0023] In FIG. 2A, the upper left corner of the main body 21 has a half-cylindrical shape for covering and guiding the upper half of the wire bundle of the wire harness WZH1 introduced into the first block 20. The upper fixed piece 28 is protruded obliquely outward in a predetermined direction. Round terminal fittings (not shown) attached to the terminals of the power supply line P (Fig. 1 (B)) to be separately introduced into the electrical junction box 10 are bolted to the left and right sides of the circuit connection portion 27 in the main body 21. A pair of power connection terminals 29 are provided for electrical and mechanical connection by, for example. In FIGS. 2 and 3 showing the first block 20, there are some parts where the description of the electrical component E and the wire harnesses WZH1 and WZH2 is omitted. These components are mounted at predetermined positions in advance.

On the other hand, lock portions 33a and 33b for locking and coupling with lock portions 24a and 24b provided in the first block 20 are provided at the left and right positions of the split end 31a of the main body portion 31 of the second block 30. . These locking portions 33a and 33b are provided in positioning concave portions 33c formed on the outer peripheral surface, and, like the locking portions 23a and 23b of the first block 20, are mouths that can be stowed in an inertial manner with the lower end as a fulcrum. Powerful with the hook piece 33d and the lock claw 33e!

Also, lock portions 34a and 34b for locking and coupling with lock portions 42a and 42b of the lower case 40 described later are provided on both the left and right side surfaces of the main body portion 31. These lock portions 34a and 34b are also provided in positioning recesses 34c formed on the outer peripheral surface, and have a lock piece 34d that can be elastically pinched with the lower end as a fulcrum, and a lock claw 34e with force! /, The

Further, on the opposite side of the surface on which the lock portions 33a and 33b are formed, that is, on the center and left side of the lower outer peripheral surface of FIG. Grooves 31b and 31c that can be fitted to the protrusions 48a and 48b projecting toward the direction are formed, and a fitting structure for positioning when the second block 30 is inserted into the lower case 40 is formed.

[0025] A cross section for covering and guiding the upper half of the wire bundle of the wire harness WZH2 introduced into the second block 30 at a required position on the right side surface of the main body 31 of the second block 30 in a plan view. An L-shaped upper fixed piece 38 is protruded sideways.

4 and 5 showing the second block 30, there are places where the description of the electrical component E and the wire harnesses WZH 1 and WZH2 is omitted. When assembling, these components are mounted at predetermined positions in advance. .

[0026] As shown in FIGS. 7A and 7B, the lower case 40 is also made of synthetic resin and is formed into a bottomed box shape by the peripheral wall portion 43 and the bottom wall portion 45, as shown in FIG. 7A. A substantially upper half portion in plan view is a first block housing portion 46 and a substantially lower half portion is a second block housing portion 47. The second block accommodating portion 47 is divided by a partition wall 43a that is integrally raised from the bottom wall portion 45, leaving a little left region of the lower case 40.

[0027] The lock portions 41a and 41b for fixing the first block 20 accommodated in the first block accommodating portion 46 are projecting portions provided at the left and right positions of the inner peripheral surface 43 on the upper side of the plan view in FIG. 41A and 41B are formed. Similarly, lock portions 42a and 42b for fixing the second block 30 housed in the second block housing portion 47 are a protrusion 43A provided on the right side surface of the partition wall 43a in plan view, and FIG. It is formed on a protrusion 43B provided at a lower position on the inner surface of the peripheral wall 43 on the right side of the plane. The protrusions 41A and 41B and the protrusions 43A and 43B have a fitting structure for positioning corresponding to the recesses 23c and 34c of the first block 20 and the second block 30, respectively. Also, the lock portions 41a and 41b and the lock portions 42a and 42b are provided by protruding lock claws 41d and 43d on which the lock claw 23e and lock claw 34e of the counterpart lock piece 23d and lock piece 34d are engaged. Yes. In addition, on the inner surface of the peripheral wall 43 of the second block housing part 47 and the right side surface of the partition wall 43a in the plan view, the protrusions 48a, 48b having semicircular cross sections corresponding to the concave grooves 31b, 31c of the second block 30 Is protruding.

[0028] The peripheral wall portion 43 of the lower case 40 is provided with a wire opening 49 cut out from the upper end of the peripheral wall portion 43 to the bottom wall portion 45 at the upper left corner of the plan view in FIG. The wire bundle of the wire harness WZH 1 introduced to the first block 20 by 49 can be pulled out! In the wire opening 49, the lower fixed piece 49a in the form of a half cylinder for guiding the lower half of the bundle of wires is guided toward the predetermined diagonally outer side corresponding to the upper fixed piece 28 of the first block 20. Projecting.

Similarly, the upper end force is also cut to the bottom wall 45 on the peripheral wall 43 on the right side of the lower case 40 in plan view. The missing wire opening 50 is provided, and the wire bundle of the wire harness WZH2 introduced into the second block 30 can be pulled out by the wire opening 50. A lower fixing piece 50a with an L-shaped cross section for covering and guiding the lower part of the bundle of wires is provided in the electric wire opening 50 so as to project in a predetermined direction corresponding to the upper fixing piece 38 of the second block 30. is doing.

In addition, a bracket BK for attaching the electrical junction box 10 to the vehicle body is provided at a predetermined position on the outer surface of the lower case 40.

Next, a method for assembling the divided electrical junction box 10 will be described.

First, as shown in FIG. 8 (A), the wire bundle of the wire harness WZH1 of the first block 20 is pulled out from the wire opening 49 of the lower case 40 to the first block housing portion 46 of the lower case 40. Insert first block 20 and press. As a result of this operation, the first block 20 is locked to the lower case 40 by locking the lock parts 23a, 23b for fixing the lower case of the first block 20 with the lock parts 41a, 41b on the inner surface of the lower case 40. It is done. When the first block 20 is fitted into the first block housing portion 46, the first block 20 is fitted by aligning the recess 23c of the first block 20 with the protrusions 41A and 41B of the lower case 40. The direction of the match is regulated in the correct direction. In addition, the wire bundle of the wire harness WZH1 drawn out is arranged between the lower fixed piece 49a of the lower case 40 and the upper fixed piece 28 of the first block 20.

[0030] Next, the wire harness WZH2 of the second block 30 is arranged between the lower fixing piece 50a and the upper fixing piece 38 so as to be pulled out from the electric wire opening 50 of the lower case 40, and the first The second block 30 is inserted into the two-block housing portion 47 and pressed. As a result of this operation, the second block 30 is locked and fixed to the lower case 40 by engaging the lock portions 34a and 34b for fixing the lower case of the second block 30 with the lock portions 42a and 42b of the lower case 40, respectively. The At the same time, the first block 20 and the second block 30 are locked together by locking the lock portions 33a, 33b of the second block 30 and the mouth portions 24a, 24b of the first block 20, respectively. The When fitting the second block 30 to the second block housing portion 47, the protrusions 43A and 43B of the lower case 40, the recess 34c of the second block 30, the protrusions 48a and 48b of the lower case 40, and the second block 30 By aligning the concave grooves 3 lb and 31c, the orientation of the second block 30 can be restricted and the stability after fitting can be improved. Simultaneously with the above operation, the electrical and mechanical connection is performed between the circuit connection portion 27 of the first block 20 and the circuit connection portion 37 of the second block 30 as described above.

[0031] In this way, after the first block 20 and the second block 30 are locked and coupled to the common lower case 40, as shown in FIG. 1 (A), from the wire openings 49, 50 of the lower case 40 The wire bundles WZH1 and WZH2 that have been pulled out are wrapped and fixed with tape T in a state where they are sandwiched between the upper fixing pieces 28, 38 and the lower fixing pieces 49a, 50a. Fix between upper fixed pieces 28 and 38 and lower fixed pieces 49a and 50a. After completing a series of connection operations in this way, the upper case opening (not shown) is put on the upper surface opening of the lower case 40 to protect the electrical component housing portions 22 and 32.

[0032] As described above, each of the divided blocks can be obtained by a simple operation in which the first block 20 and the second block 30 are sequentially inserted into the predetermined lower position and locked together with respect to the common lower case 40. Electrical and mechanical coupling can be achieved.

In addition, when the second lock claw of the second block 30 is long and the first block 20 and the second block 30 are half-fitted, the relay terminal 27c of the first block 20 and the second block 30 Since the male tab 37c is not in contact with each other, the internal circuits of the first and second blocks 20, 30 are connected to each other only after the first and second blocks 20, 30 are completely fitted. Therefore, the internal circuits of the first and second blocks 20 and 30 are connected to each other, but the situation where the first block 20 and the second block 30 are in a semi-fitted state can be prevented. The reliability of the electrical connection can be improved because the two blocks 30 are not mounted on the vehicle in a semi-fitted state.

Claims

The scope of the claims

[1] A female housing a female terminal connected to an internal circuit in one of the first block and the second block at the divided end of the first block and the second block formed by dividing the electric junction box body While providing the terminal accommodating portion, the male block accommodating portion for accommodating the male terminal connected to the internal circuit is provided in the other block, and the female terminal and the male terminal are fitted to each other. As a result, the circuit connection between the first block and the second block is made,

Locking claws are provided on the peripheral walls of the female terminal accommodating portion and the male terminal accommodating portion, and the female terminal and the male terminal are not in contact with each other until the locking claws are permanently locked. The divided block connection structure characterized by the above.

[2] The first terminal is a standby block, and the female terminal accommodating portion having an upper end opening is provided, and a first locking claw is provided at the upper end of a lock piece connected to the peripheral wall of the female terminal accommodating portion with a gap. While

The second block is provided with the male terminal accommodating portion having a lower end opening, and the peripheral wall force of the male terminal accommodating portion is protruded with a U-shaped locking piece inserted into the gap of the first block. A long second lock claw that is engaged with the first lock claw of the first block is provided, and the male and female terminals until the second lock claw is permanently engaged with the engagement lower end surface of the first lock claw. The connecting structure of the divided blocks according to claim 1, wherein the setting is made so as not to be brought into contact with each other.