JP2015079705A - Terminal connection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal connection device capable of connecting a crimp terminal with a simple operation without a need of a screwing operation.SOLUTION: A terminal connection structure 20 comprises terminal connection means 203 having a support part 300a and a leaf spring part 220a, and a terminal 60 has a hole 600 at its center. The support part 300a comprises a positioning hole 330 having a hole with a similar degree with the hole 600. The leaf spring part 220a comprises a notch part 260 larger than the hole 600. When the terminal 60 is inserted, a position of the terminal 60 is coincident with a center of the positioning hole 330 of the support part 300a. The notch part 260 is overlaid on the hole 600, and the terminal 60 is fixed by a detachment prevention pin 50 penetrating through the hole 600. A case 5 comprises a body case 10 and a cover case 40. The cover case 40 comprises a housing part 410 of the detachment prevention pin 50. The terminal connection structure 20 is set to the body case 10, and the cover case 40 is fitted on it.

Description

The present invention relates to a terminal connection device, and more particularly to a terminal connection device in which a terminal can be easily attached and detached.

  For example, as disclosed in Patent Document 1, a conventional terminal block for connecting an electric wire is a round crimp terminal attached to the tip of the electric wire at a predetermined position of the terminal block, or a point where the tip is opened. An open-type crimp terminal is set and positioned and fixed with an attached screw at that position. The terminal block includes a connection portion made of a metal plate-like body, and the connection portion is firmly and electrically mechanically connected to the crimp terminal by a screw tightening force. As a result, a terminal block capable of dealing with a large current is obtained.

  Further, as disclosed in Patent Document 2, a terminal block provided with a lock lever for fixing a crimp terminal to a connection portion at a predetermined position is known. The connection portion is provided with a terminal plate for electrical and mechanical connection with the crimp terminal, a lock having a coiled pressure contact spring on the non-connection surface side of the terminal plate and a rotation shaft capable of rotating on the connection surface side. With a lever. The tip-opening type crimp terminal having the tip opened is placed in a predetermined position in such a manner that the rotating shaft is sandwiched between the tip-opening portions. The lock lever includes a mechanism for fixing the crimp terminal at this position, and is switched from the release position to the tightening position by a rotation operation. Thereby, the crimp terminal is electrically and mechanically fixed to the terminal block. Release is performed by the reverse switching operation.

JP 2013-165001 A JP 2005-149820 A

However, according to the technique described in Patent Document 1, in order to fix the crimp terminal to the terminal block, an attached screw is required and a screw tightening operation is involved. Also, when removing the crimp terminal from the terminal block, it is troublesome to attach and detach the crimp terminal with a screw loosening operation.
According to the technique described in Patent Document 2, the attachment and detachment of the crimp terminal can be performed by operating the lock lever, so that it is free from complicated work. However, the crimp terminals that can be used are limited, and can only be used for tip-open crimp terminals with a notch at the tip. That is, this is a limited connection technique that cannot be applied to a round crimp terminal having a general shape.

  The present invention has been made in view of the above-described problems. The purpose is at least one of the following: One of them is to provide a terminal connection device and a terminal connection method that do not limit the shape of the crimp terminal that can be used, and the other one. It is an object to provide a terminal connection device and a terminal connection method capable of electrically and mechanically connecting a crimp terminal with a simple operation, eliminating the screw tightening work from the crimp terminal connection work.

  The terminal connection device of the present invention is (1) a terminal connection device comprising a terminal connection structure made of a conductor to which a terminal connected to an end of an electric wire having a conductor can be connected, wherein the terminal connection structure includes the terminal It has a feature in that it has at least two terminal connection means having a plate-like support portion that supports the plate and a leaf spring portion that applies a biasing force to the terminal.

According to this invention, the terminal connection device includes a terminal connection structure, and the terminal connection structure includes terminal connection means. The terminal connection means includes a support portion for supporting the terminal and a leaf spring portion for applying a biasing force to the terminal, and a means for electrical and mechanical connection is constructed by these. That is, the terminal fits in a gap formed between the support portion and the leaf spring portion, and the front and back surfaces of the terminal are in contact with each other, whereby a stable connection structure that receives pressure from the plate thickness direction is obtained. Accordingly, since the terminal can obtain a stable electromechanical connection that can be held by the terminal connection means, a terminal connection device that does not require an accessory such as a screw for fastening can be obtained as a separate connection means.
The connection state is maintained by an urging force generated by elastic deformation of the leaf spring portion. Thereby, for example, the selection of the alloy material, the design of the plate thickness of the leaf spring portion, and the like, it is possible to design the optimum connection strength according to the connection conditions. As a result, it is possible to obtain a highly reliable terminal connection device that can be used even where a large current of about several tens of amperes to one hundred amperes flows.

  The terminal connecting means includes a conductive support portion and an elastically deformable leaf spring portion. Thereby, the stable connection structure which clamps a terminal in a plate | board thickness direction is obtained. A support part and a leaf | plate spring part may be comprised continuously by one member, and may be comprised by an assembly type from another member. In the case where it is constructed from another member in an assembly type, either one may be a conductive substance. Since connection to the terminal connection device can be performed by sliding the terminal in the horizontal direction, there are no restrictions on the types of terminals that can be connected, round crimp terminals, tip-open crimp terminals, and laterally open terminals A terminal connecting device capable of connecting all these crimping terminals such as crimping terminals can be obtained.

  The movable piece of the leaf spring portion may extend in a direction parallel to the terminal insertion direction, or may extend in a direction orthogonal to the terminal insertion direction. A plurality of movable pieces may be arranged in parallel. Further, the support portion may be located below the terminal and the leaf spring portion may be located above the terminal, or a reverse positional relationship may be employed.

  The terminal connection structure includes at least two terminal connection means. The two terminal connecting means may be arranged in series along the insertion direction of the terminals, or may be divided into an upper stage and a lower stage and arranged in parallel. Moreover, it may be provided with four terminal connection means, divided into an upper stage and a lower stage, each having a serial arrangement. The plurality of terminal connection means may be configured as an integrated unit, and particularly may have a configuration having electrical commonality. That is, the terminal connected to the four terminal connection means may be configured to be electrically connected. Alternatively, any terminal connection means may be electrically disconnected from the others. Since the terminal connection device of the present invention can have a configuration with a high degree of freedom as described above, a terminal connection device capable of arranging electric wires arranged by taking a configuration according to the purpose is obtained.

  Preferably, in the terminal connection device according to the present invention, (2) the terminal connection structure is arranged such that the support portion spreading in a plate shape is arranged in the center at the upper stage in the insertion / removal direction of the terminals, And the two terminal connection means arranged in the insertion / extraction direction of the terminal, and the two terminal connection means arranged in the upper stage and the lower stage are characterized in that the insertion / extraction directions of the terminals are opposite to each other. (1) It is a description.

According to the present invention, the terminal connection device has a terminal connection structure having a total of four terminal connection means, two at the upper stage and two at the lower stage. The four terminal connecting means may be configured as an integrated unit, and particularly may be configured to have electrical commonality. Alternatively, some terminal connection means may be configured to be electrically disconnected from other terminal connection means.

The four terminal connection means are arranged in such a manner that two are arranged in the upper stage and two in the lower stage. For example, the insertion of the terminal into the terminal connection means arranged in the upper stage may be configured such that the insertion direction of one terminal and the insertion direction of the other terminal are opposite to each other. The same configuration may be applied to the lower stage. In particular, when the four terminal connection means are configured as a unitary unit, and are configured to have electrical commonality, it is possible to route the electric wires with organized wiring circuits. become. For example, a branch circuit that branches current from one terminal to three terminals can be freely assembled. In addition, when a return circuit in which two electric wires are arranged in parallel is assembled, it is freed from the unnecessarily handling of the electric wires and an orderly arrangement of the electric wires becomes possible.

  Preferably, in the terminal connection device according to the present invention, (3) the leaf spring portion has a cantilever structure in which one end is a free end and the other end is a fixed end, and the free end extends in the insertion direction of the terminal. It has a characteristic and is described in (2).

According to the present invention, since the free end of the leaf spring portion extends in the insertion direction of the terminal, when inserting the terminal into the terminal connection means, the leaf spring portion is not limited to a round crimp terminal, even in the case of an open crimp terminal. It is possible to operate smoothly without applying force in an unreasonable direction. Thereby, the terminal connection apparatus which can attach or detach a terminal easily without limiting the kind of terminal which can be used is obtained.
When two terminal connection means are configured in series, the leaf spring portions arranged in series may have a fixed end on the outer side and a free end extending on the inner side. By taking such a configuration, terminals can be connected along the direction in which the electric wires extend.

  Preferably, the terminal connection device of the present invention is characterized in that (4) the leaf spring portion and the support portion include terminal connection means formed of a single metal plate (2) or (3 ).

  According to this invention, as for the terminal connection means, a leaf | plate spring part and a support part are formed from one metal plate. Thereby, the number of parts is reduced, and a terminal connection device that is easy to assemble and can be easily attached and detached is obtained.

  Preferably, the terminal connection device of the present invention is characterized in that (5) the leaf spring portion and the support portion include terminal connection means configured by combining different members (2) or (3 ).

According to the present invention, in the terminal connecting means, the leaf spring part and the support part are configured by a combination of different members. Thereby, since the most suitable material can be selected for each element, it is possible to easily attach and detach the terminal and to obtain a terminal connection device with high reliability in connection where a large current flows.
For example, the support part responsible for the electrical and mechanical connection with the terminal mainly has a structure in which a copper alloy mainly composed of copper is used as a base material and is subjected to a surface treatment by tin plating in consideration of conductivity and corrosion resistance. Good. Furthermore, a stainless steel material may be used for the leaf spring portion that continuously applies the urging force in consideration of mechanical strength, rigidity, and the like. Furthermore, when a large current flows, it is possible to cope with the problem by increasing the plate thickness of the copper alloy sheet in consideration of the current density.

  Preferably, in the terminal connection device according to the present invention, (6) the leaf spring portion includes two cantilever beams connected by a connecting portion at a tip end, and the cantilever beam has a protruding shape near the front end of the tip end. One of the items described in (3) to (5), which is characterized by having a contact portion.

According to the present invention, the leaf spring portion has a configuration in which two cantilevers are connected by the connecting portion at the tip.
An urging force can be applied to the terminal in a balanced and continuous manner. As a result, when the terminal is inserted, for example, the contact between the leaf spring portion and the terminal is made uniform, so that a terminal connection device that can be smoothly inserted is obtained. Further, a stable connection state can be obtained even after insertion of the terminal.
According to this invention, the protruding contact portion is provided near the tip of the cantilever, that is, in the vicinity of the free end. Thereby, since a large urging force acts on the contact portion, a stable electromechanical connection can be obtained.

  Preferably, in the terminal connection device according to the present invention, (7) the terminal is a round terminal having a hole in the center or an open type terminal, and the support portion has a hole of approximately the same size as the hole. The leaf spring portion is provided with a notch portion larger than this hole, and when the terminal is inserted to the normal insertion position of the connecting means, the center of the hole of the terminal and the hole of the support portion are provided. The center of the terminal is substantially the same, and the notch is provided so as to overlap these holes, and the terminal is inserted at a normal insertion position by a retaining pin inserted from above or below so as to penetrate these two holes. One of the features (1) to (6) characterized by being fixed.

  According to this invention, by passing the retaining pin through the hole of the terminal and also through the hole of the support portion, the terminal inserted up to the normal insertion position of the terminal connecting means can be held at that position. The electromechanical connection between the terminal and the terminal connection means is performed by holding the terminal in the plate thickness direction by a support portion and a leaf spring portion provided in the terminal connection means. The retaining pin is for holding the connection state formed between the terminal and the terminal connection means as it is. Thereby, the terminal connection apparatus provided with the terminal connection means which can perform the connection of a terminal easily and a terminal does not pull out carelessly is obtained.

  The terminal only needs to have a hole in the center, and may be a round crimp terminal, a front-open crimp terminal with an opening forward, or a lateral open crimp terminal with an opening in lateral direction. . In particular, the round-type crimp terminal and the laterally-open type crimp terminal are most effective in retaining the retaining pins.

For example, when the pin of the retaining pin has a circular cross section, the relationship between the diameter of each hole, the diameter of the retaining pin, and the size of the notch will be described in detail. The diameter of the retaining pin may be smaller than the diameter of the hole of the terminal, may be smaller than the diameter of the hole of the support portion, and may be smaller than the size of the notch portion. The hole of the terminal and the hole of the support portion may have the same diameter, and there is no limitation that one of the diameters must be larger or smaller than the other.
Further, the cutout portion of the support portion only needs to be large enough to pass the retaining pin as far as this problem is concerned. If terminals, terminal connection means, and retaining pins designed and created to satisfy such conditions are used, terminals can be easily connected and the types of terminals that can be used are not limited. A terminal connection device is obtained. Of course, the shape of the pin of the retaining pin is not limited. For example, the pin may have a circular cross section, and may have a hexagonal shape or a quadrangular shape other than the circular shape.

  The retaining pin may be selected in consideration of moldability and economy so that the required function is satisfied, and may be an injection molded product of insulating synthetic resin. Further, a combination of different materials such as synthetic rubber and synthetic resin, or synthetic resin and metal or alloy may be used. By combining in this way, a terminal connecting device that can easily insert and fix the terminal is obtained.

  Preferably, in the terminal connection device of the present invention, (8) the two terminals inserted into the normal insertion positions of the upper and lower terminal connection means can be positioned and fixed by one retaining pin. One of the items (2) to (6) provided with the terminal connection means.

According to the present invention, the two terminals inserted into the terminal connection means provided in the upper stage and the lower stage can be simultaneously connected and fixed by the single retaining pin. As a result, there is obtained a terminal connecting device that can easily insert and fix a plurality of terminals without limiting the types of terminals that can be used.
The center of the hole of the terminals inserted in the upper and lower stages coincides. Furthermore, the center of these holes and the center of the hole of the support portion coincide with each other, and the notch portion of the leaf spring portion is positioned so as to overlap these holes. By satisfying such a condition, two terminals can be simultaneously fixed by one retaining pin.

  Preferably, in the terminal connection device of the present invention, (9) the terminal connection structure is protected by a case made of an insulating material, and the terminal insertion port is provided on each of two opposing surfaces of the case. An insertion port for the retaining pin is provided on the upper surface or the lower surface, and the regular pin is inserted into the regular insertion position in the state where the terminal is inserted from the insertion port and accommodated in the regular insertion position. (7) or (8) is characterized in that it is positioned and fixed at the insertion position.

  According to the present invention, in the terminal connection device, the terminal connection structure is protected by the insulating case. As a result, even when a large current of several tens of amperes flows through the terminal connection structure, the terminal connection device can be handled safely, so there is no limitation on the types of terminals that can be used. A terminal connection device that can be performed is obtained.

  The insertion ports of the two opposing terminals provided in the case are connected to the terminal connection structure accommodated therein. Thereby, a terminal can be connected in series along the direction where an electric wire extends. In addition, when the terminal connection means is arranged in two stages, an upper stage and a lower stage, two return holes are arranged in parallel by providing two insertion openings on one side surface of the case, A terminal connection device can be obtained in which a branch circuit having two or three electric wires can be freely assembled.

  Preferably, in the terminal connection device of the present invention, (10) the case includes a terminal housing portion that houses the terminal connection structure, and a cover housing portion that is above the terminal housing portion and communicates from an opening on the upper surface. A body case having a wire housing portion that is in front and rear of the terminal housing portion and communicates with the insertion port on the front surface and the rear surface, and a cover case fitted into the cover housing portion. An insertion port that communicates with a through-hole through which the retaining pin is inserted and removed; the terminal connection structure is set in the terminal accommodating portion through the opening in the case; and the cover case passes through the opening on the case The terminal connecting structure is fixed to the terminal accommodating portion by being fitted into the cover accommodating portion, and is characterized in that it is characterized in (9).

According to this invention, the case is configured to be divided into a main body case and a cover case, and the cover case is fitted and integrated into a predetermined place of the main body case. Further, the cover case fixes the terminal connection structure mounted in the terminal accommodating chamber at the back of the cover case at that position. Thereby, the terminal connection device which can assemble | attach a component easily is obtained. The cover case and the main body case may be formed of the same material or may be formed of different materials.
Both form an integral insulating case. The main body case is provided with a terminal connection structure therein and has a terminal insertion opening connected to the terminal connection structure. The cover case includes a through hole that is continuous with the terminal connection structure and an insertion port for a retaining pin that is continuous with the through hole. Since the retaining pin has an operation direction in a direction orthogonal to the insertion direction of the terminal, it passes through the hole of the terminal at the normal insertion position in a hook shape. Thereby, the connection state is fixed.

Preferably, in the terminal connection device of the present invention, (11) the cover case and the main body case are provided with locking means at corresponding positions, and the cover case is properly accommodated in the cover accommodating portion of the main body case. (10) is characterized in that the locking means acts when fitted to the position.

  According to this invention, since the main body case and the cover case include the locking means, the cover case is integrally held by the main body case at a predetermined position.

  Preferably, in the terminal connection device according to the present invention, (12) the retaining pin can be attached to the through hole of the cover case in a direction opposite to the fitting direction, and falling off to the outside is suppressed by the locking means. (10) or (11), which is characterized by

  According to the present invention, the retaining pin attached to the cover case is structurally suppressed from falling off. As a result, a terminal connection device in which the retaining pin is integrated with the case is obtained.

  Preferably, in the terminal connection device according to the present invention, (13) the case includes a connecting means on a side surface so that the case can be easily connected in the lateral direction, and the case can be freely increased or decreased according to the number of connection terminals required However, it is one of the items (9) to (12) having the characteristics.

  According to this invention, since the terminal connection device can be easily coupled in the lateral direction, a terminal connection device can be obtained in which a configuration corresponding to the required number of terminals can be easily assembled.

  In the terminal connection method of the present invention, (14) a first step of inserting the terminal from the insertion port of the upper stage and the lower stage from the insertion port to a normal insertion position, and inserting the retaining pin from the insertion port to a regular retaining position In the second step, the two terminals are fixed at the normal insertion position.

  According to the present invention, there is obtained a terminal connection method in which a terminal can be connected to a terminal connection device by two operations of inserting a terminal and inserting a retaining pin without requiring a screw or a screw tightening operation. It is done.

FIG. 1 is an external perspective view of a terminal connection device according to an embodiment of the present invention. 2 is a cross-sectional view taken along line X2-X2 of FIG. 3 is a cross-sectional view taken along line Y3-Y3 of FIG. FIG. 4 is a perspective view showing the inside of the main body case of the terminal connection device according to the embodiment of the present invention. FIG. 5 is an external perspective view from the bottom side of the main body case. 6 is a cross-sectional perspective view taken along line X6-X6 of FIG. FIG. 7 is an external perspective view of the cover case of the terminal connection device according to the embodiment of the present invention. FIG. 8 is an external perspective view from the bottom side of the cover case. 9 is a cross-sectional perspective view taken along line X9-X9 in FIG. FIG. 10 is an external perspective view showing the terminal connection structure of the terminal connection device according to the embodiment of the present invention. FIG. 11 is an external perspective view showing the first leaf spring member. FIG. 12 is an external perspective view showing the second leaf spring member. FIG. 13 is an external perspective view showing the support member. FIG. 14 is a perspective view showing a state in which a terminal is inserted in FIG. FIG. 15 is an external perspective view of a retaining pin of the terminal connection device according to the embodiment of the present invention. FIG. 16 is an external perspective view of the retaining pin from the bottom side. 17 is a cross-sectional perspective view taken along line Y17-Y17 of FIG. 18A and 18B are process diagrams illustrating an assembly process of the terminal connection device according to the embodiment of the present invention, in which FIG. 18A is a process of assembling the first leaf spring member to the main body case, and FIG. The process of assembling the support member, (C), is a diagram showing the assembled state. 19 is a cross-sectional view taken along line Y19-Y19 in FIG. FIG. 20 is a process diagram illustrating an assembly process of the cover case of the terminal connection device according to the embodiment of the present invention, wherein (A) is a process of assembling the retaining pin and the second leaf spring member to the cover case; (B) is a process of assembling the second leaf spring member to the cover case, and (C) is a diagram showing an assembled state. 21 is a cross-sectional perspective view taken along line Y21-Y21 of FIG. 22 is a cross-sectional perspective view taken along line X22-X22 of FIG. FIG. 23 is a process diagram illustrating an assembly process of the cover case and the main body case of the terminal connection device according to the embodiment of the present invention, wherein (A) is a perspective view before assembly and (B) is a perspective view after assembly. FIG. FIG. 24 is a connection procedure diagram illustrating a process of inserting a crimp terminal and pushing a retaining pin into the terminal connection device according to the embodiment of the present invention. FIG. 24A is a perspective view illustrating the insertion start of the crimp terminal. FIG. 4B is a perspective view showing a state where the insertion of the crimp terminal is completed, and FIG. 4C is a perspective view showing a state where the front retaining pin is pushed down to the retaining position. 25 is a cross-sectional perspective view taken along line X25-X25 in FIG. FIG. 26 is an external perspective view showing a state where four crimp terminals are inserted into the terminal connection device according to the embodiment of the present invention. FIG. 27 is an external perspective view showing a state in which a plurality of terminal connection devices according to the embodiment of the present invention are connected. (A) is a perspective view showing a state of connection of the terminal connection device, (B) is a perspective view showing a state of connecting the fixing base, (C) a perspective view of the terminal connection device in a state where the fixing base is connected. It is. FIG. 28 is a diagram in which a plurality of terminal connection devices according to the embodiment of the present invention are connected to form a circuit. (A) is a branch circuit and (B) is a return circuit.

  A terminal connection device 1 according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of a terminal connection device according to an embodiment of the present invention. 2 is a cross-sectional view taken along line X2-X2 of FIG. 3 is a cross-sectional view taken along line Y3-Y3 of FIG. The direction indicated in the description follows the direction defined in the drawings.

  As shown in FIGS. 1 and 2, the terminal connection device 1 includes a synthetic resin case 5, a metal terminal connection structure 20 accommodated therein, and a synthetic resin retaining member assembled in the case 5. A pin 50 is provided. The case 5 is a split type divided into a main body case 10 and a cover case 40.

  <Outline of Terminal Connection Device> As shown in FIGS. 2 and 3, the main body case 10 is a box-shaped injection-molded product made of an insulating synthetic resin having a space inside. The main body case 10 includes an insertion port 100 for inserting a terminal attached to the front end of the electric wire on the front and rear surfaces. The insertion port 100 is connected to an electric wire housing part 130 for housing an electric wire, which is formed inside the main body case 10. The main body case 10 includes an opening 120 for mounting the terminal connection structure 20 on the upper surface, and the opening 120 is connected to a cover housing portion 121 for housing the cover case 40. The cover accommodating part 121 is connected to the terminal accommodating part 110 provided in the inner part thereof, and the terminal accommodating part 110 is connected to the electric wire accommodating part 130 provided in front and rear thereof.

  As shown in FIGS. 1, 2, and 3, the cover case 40 is fitted into the cover accommodating portion 121 of the main body case 10 to form the case 5 integrally with the main body case 10. The cover case 40 is an injection molded product made of an insulating synthetic resin. The cover case 40 includes an accommodating portion 410 for the retaining pin 50 to move along a direction orthogonal to the insertion direction of the terminal 60. Since the case 5 is divided into the main body case 10 and the cover case 40, the terminal connection structure 20 can be easily mounted, and the cover case 40 holds the terminal connection structure 20 in the regular mounting position. Make it possible.

As shown in FIGS. 2 and 3, the terminal connection structure 20 includes a first terminal connection structure 200 and a second terminal connection structure 201. The 1st terminal connection structure 200 and the 2nd terminal connection structure 201 are the structures which share a member, and are provided with the same structure. The terminal connection structure 20 includes terminal connection means 203 which is a minimum structural unit for connecting the terminal 60. The terminal connection means 203 includes a support part 300a and a leaf spring part 220a.
As shown in FIG. 2, the retaining pin 50 is for holding the terminal 60 inserted into the terminal connection structure 20 in the normal insertion position. The retaining pin 50 includes a main body 500 in consideration of operability, and includes a through pin 530 for preventing the terminal 60 from coming off on one surface thereof.

  <Main body case> The main body case 10 is demonstrated according to drawing. FIG. 4 is a perspective view showing the inside of the main body case of the terminal connection device according to the embodiment of the present invention. FIG. 5 is an external perspective view from the bottom side of the main body case. 6 is a cross-sectional perspective view taken along line X6-X6 of FIG.

  As shown in FIGS. 4, 5, and 6, the main body case 10 is a box made of an insulating synthetic resin and includes a terminal housing portion 110 for housing the terminal connection structure 20 at the center thereof. Yes. The main body case 10 includes a wire housing portion 130 in front of and behind the terminal housing portion 110. The electric wire housing part 130 functions as an insertion passage for guiding the terminal 60 in the process of inserting the terminal 60 into the terminal connection means 203, and functions as a housing part for the electric wire 610 connected to the rear of the terminal 60 when connected to the terminal 60. To do. The electric wire housing part 130 further extends forward or rearward and continues to the insertion port 100 on the front surface of the main body case 10 or the insertion port 100 on the rear surface.

  The terminal connection structure 20 has a two-stage structure of an upper stage and a lower stage. For convenience, the lower stage is referred to as a first terminal connection structure 200, and the upper stage is referred to as a second terminal connection structure 201. Following this, as shown in FIG. 6, the terminal accommodating portion 110 includes a first terminal accommodating portion 111 where the first terminal connecting structure 200 is accommodated and a second terminal accommodating portion where the second terminal connecting structure 201 is accommodated. 112, and the electric wire housing part 130 connected thereto is also represented as the first electric wire housing part 131 in the lower stage and the second electric wire housing part 132 in the upper stage. Further, in the insertion port 100 connected thereto, the lower row is referred to as a first insertion port 101 and the upper row is referred to as a second insertion port 102.

  As shown in FIG. 6, the insertion port 100 includes a first insertion port 101 and a second insertion port 102 on the front surface of the main body case 10, and a first insertion port 101 and a second insertion port 102 on the rear surface. Prepare. Since one terminal 60 can be inserted into and removed from one insertion port 101 or 102, the terminal connection device 1 can connect four terminals 60 simultaneously. A partition wall 133 is provided between the first wire housing portion 131 and the second wire housing portion 132, and the housing portions 131 and 132 are partitioned by the partition wall 133. Thereby, when the terminal 60 crimped | bonded to the terminal of the electric wire is inserted in the terminal connection structure 20, the crimping | compression-bonding part of the terminal 60 in the 1st electric wire accommodating part 131 and the crimping of the terminal 60 in the 2nd electric wire accommodating part 132 are carried out. Contact between the two parts is structurally avoided by the partition wall 133.

  As shown in FIG. 6, a back wall 134 is provided between the electric wire housing part 130 and the terminal housing part 110 in the back part. The back wall 134 partitions the electric wire housing part 130 and the terminal housing part 110. However, a slit 135 is provided in a part of the back wall 134, and the passage of the terminal 60 is secured by the slit 135. In this way, only the minimum necessary gap is left, and the remaining portion is partitioned by providing the partition wall 133 and the back wall 134, thereby making unnecessary contact between the terminals and particularly electrical contact with the outside. The danger of being avoided.

As shown in FIG. 6, the slit 135 is provided in the vicinity of the back wall 134 on the line of intersection with the partition wall 133. The width and thickness of the slit 135 are such that the terminal 60 can be smoothly inserted and removed.
As shown in FIG. 6, the terminal accommodating portion 110 is a space having a rectangular cross section that is continuous with the inner portion of the cover accommodating portion 121. The terminal accommodating portion 110 and the cover accommodating portion 121 are an integral space provided continuously. The terminal connection structure 20 is attached to the terminal accommodating portion 110 through the cover accommodating portion 121 from the opening 120 of the main body case 10. The four sides around the terminal accommodating portion 110 are composed of four walls.

  As shown in FIGS. 4 and 6, the terminal accommodating portion 110 includes a press-fit slit 140, a penetrating portion receiving portion 160, and a guide portion 170 on the bottom surface. The press-fit slits 140 are slits for receiving press-fit portions 270 of the terminal connection structure 20 that are disposed at the four corners of the bottom surface. When the press-fitting portion 270 is press-fitted into the press-fitting slit 140, the terminal connection structure 20 is mounted at the regular mounting position. The width and thickness of the press-fit slit 140 are large enough to press-fit the press-fit portion 270.

  As shown in FIGS. 4 and 6, the penetrating part receiving part 160 is a concave part having a circular shape in front view provided on the bottom surface. The penetrating portion receiving portion 160 receives the retaining pin 50 inserted to a predetermined position and fits the tip of the pin into the concave portion to suppress the slight occurrence of the deflection in the plane direction. Two penetration receiving parts 160 are provided on the bottom surface of the terminal accommodating part 110 and are arranged along the front-rear direction. The diameter and depth of the penetrating part receiving part 160 are slightly larger than the diameter of the tip of the penetrating pin 530, and may be deep enough to hide part of the tip.

  As shown in FIG. 6, the guide part 170 guides the terminal connection structure 20 to the proper mounting position when the terminal connection structure 20 is attached to the terminal accommodating part 110 of the main body case 10, and when the cover case 40 is fitted, Provided to guide you to. The guide part 170 is a columnar body having a rectangular cross section, and is provided at the center of the bottom surface of the terminal accommodating part 110. The guide portion 170 only needs to have a size that allows the positioning hole 280 of the terminal connection structure 20 and the positioning hole 470 of the cover case 40 to pass therethrough, and if the guide portion 170 is slightly smaller than the size of these holes. Good. The length of the guide part 170 should just be the length which penetrates the attached terminal connection structure 20 and reaches the middle of the assembled cover case 40.

  <Cover Case> The cover case 40 will be described with reference to the drawings. FIG. 7 is an external perspective view of the cover case of the terminal connection device according to the embodiment of the present invention. FIG. 8 is an external perspective view from the bottom side of the cover case. 9 is a cross-sectional perspective view taken along line X9-X9 in FIG.

  The cover case 40 is fitted into the cover housing part 121 of the main body case 10 and constitutes the case 5 integrally with the main body case 10. Since the case 5 is divided into the main body case 10 and the cover case 40, the assembling property of the terminal connection device 1 is dramatically improved. The cover case 40 holds the terminal connection structure 20 attached to the terminal accommodating portion 110 of the main body case 10 at a predetermined position at a regular fitting position.

As shown in FIGS. 7, 8, and 9, the cover case 40 is fitted into the cover accommodating portion 121 through the opening 120 on the upper surface of the main body case 10. As shown in FIG. 7, the cover case 40 includes a box-shaped main body 400 and a housing portion 410 that penetrates the main body 400 from the upper surface 401 toward the lower surface 402. The accommodating portion 410 is a space for accommodating the retaining pin 50, and is provided with two accommodating portions 410 and 410 arranged in the front-rear direction so as to sandwich the positioning hole 470 therebetween.
As shown in FIGS. 7 and 9, the accommodating portion 410 is a columnar space having a rectangular cross section. The surrounding four sides are walls. The left and right walls have a convex first locking portion 420 for preventing the retaining pin 50 from falling off at the lower end, and a convex second locking for holding the retaining pin 50 at the standby position 501. A portion 421 is provided at the upper end. The first locking portion 420 has one relatively large one, and the second locking portion 421 has two relatively small ones.

As shown in FIG. 9, the housing part 410 includes a drop prevention part 430. A part of the slip-off prevention part 430 is formed in a groove shape from the lower surface, and has a hook-like protrusion at the upper end. The removal prevention part 430 is provided to prevent the removal prevention pin 50 from coming off, and is provided at the upper ends of the front and rear walls of the housing part 410.
As shown in FIG. 7, the main body 400 includes a flange-shaped upper surface 401 that slightly protrudes to the outside and has a certain thickness. The upper surface 401 has a rectangular shape in front view and rounded corners. As shown in FIG. 8, the lower surface 402 includes an insertion port 411 for assembling the retaining pin 50. Two insertion ports 411 and 411 are provided side by side in the front-rear direction of the terminal 60. An insertion guide 440 is provided in front of and behind the opening 412 on the upper surface 401. The insertion guide 440 is configured such that a part of the upper surface 401 at the front and rear of the opening 412 is inclined, and assists the pulling-out operation of the retaining pin 50 inserted using this inclination.

  As shown in FIG. 7, the main body 400 includes a pressing portion 460 at the front and rear of the left and right side surfaces 403. The presser portion 460 is a relatively wide plate-like body that extends downward from the front and rear ends of the left and right edge portions of the upper surface, and extends linearly downward. The lower end of the pressing portion 460 extends further downward than the lower surface of the main body 400 in a state where the plate width and the plate thickness are kept constant. The presser portion 460 includes an upward convex locking portion 461.

When the cover portion 40 is fitted into the main body case 10, the presser portion 460 guides the cover case 40 to a predetermined position in cooperation with the support portion 150 of the main body case 10. The locking portion 461 holds the cover case 40 at the normal fitting position of the main body case 10 in cooperation with the holding portion 122 of the main body case 10.
As shown in FIGS. 8 and 9, the cover case 40 includes a positioning hole 470 drilled upward from the center of the lower surface 402 of the main body 400. The positioning hole 470 functions as a guide when the cover case 40 is fitted into the main body case 10 in cooperation with the guide portion 170 of the main body case 10. The positioning hole 470 is a columnar space having a rectangular cross section. The positioning hole 470 is provided between the two accommodating portions 410 arranged in the front-rear direction. The cover case 40 includes slits 450 at the four corners of the lower surface 402 of the main body 400. A press-fit portion 270 of the second leaf spring member 2202 is press-fitted and held in the slit 450.

  <Terminal connection structure> The terminal connection structure 20 is demonstrated according to drawing. FIG. 10 is an external perspective view showing the terminal connection structure of the terminal connection device according to the embodiment of the present invention. FIG. 11 is an external perspective view showing the first leaf spring member. FIG. 12 is an external perspective view showing the second leaf spring member. FIG. 13 is an external perspective view showing the support material. FIG. 14 is a perspective view showing a state in which a terminal is inserted in FIG.

As shown in FIG. 10, the terminal connection structure 20 includes a first terminal connection structure 200 and a second terminal connection structure 201. Each of the first terminal connection structure 200 and the second terminal connection structure 201 includes a support member 300 and a leaf spring member 220. The first terminal connection structure 200 includes a support member 300 that is a shared member and a first leaf spring member 2201, and the second terminal connection structure 201 includes a support member 300 and a second leaf spring member 2202. Since the first terminal connection structure 200 and the second terminal connection structure 201 share the support member 300 and have the same basic structure, the following description will be mainly performed on the first terminal connection structure 200.

  As shown in FIGS. 10, 11, and 12, the first terminal connection structure 200 includes a flat plate-like support member 300 and a leaf spring member 220 including an elastically deformable portion. The support member 300 includes two support portions 300a and 300a on the front and rear sides. The leaf spring member 220 includes a base portion 205 that spreads in a plate shape, and leaf spring portions 220a and 220a that extend from the front and rear ends so as to be bent and overlapped with each other. The support portions 300a and 300a and the leaf spring portions 220a and 220a are in corresponding positions, and the plate thickness support portion 300a is flat for electrically and mechanically connecting the terminal 60 with a gap formed therebetween. The main body 301 is provided. The terminal 60 acquires a large connection area by overlapping and connecting the flat surface with the flat main body 301 of the support part 300a. Further, a large urging force is continuously applied from the leaf spring portion 220a to the terminal 60 to be sandwiched. Thereby, the highly reliable terminal connection structure 20 which can respond also to a big electric current connection is obtained.

As shown in FIG. 10, the first terminal connection structure 200 includes two sets of terminal connection means 203 and 203. The terminal connecting means 203 is a minimum structural unit that takes charge of the connection, and includes a support portion 300a and a leaf spring portion 220a.
As shown in FIGS. 11 and 12, the leaf spring member 220 includes a base portion 205 that spreads in a plate shape, and leaf spring portions 220a and 220a that extend from the front and rear ends so as to bend and overlap. The base portion 205 includes a positioning hole 280 in the central portion for allowing the guide portion 170 extending in a columnar shape to pass when the terminal connection structure 20 is attached to the main body case 10. The base portion 205 has press-fit portions 270 for press-fitting and fixing the press-fit slits 140 of the terminal housing portion 110 into the front and rear ends of the left and right side edges when the terminal connection structure 20 is attached to the terminal housing portion 110 of the main body case 10. I have. The press-fit portion 270 is a cut piece extending from the side edge of the base portion 205 and has a bent portion and extends downward.

  As shown in FIGS. 11 and 12, the base portion 205 includes guide portions 290 for guiding the terminal 60 in the middle of insertion at the front and rear ends of the left and right side edges. The guide portion 290 is a cut piece extending from the side edge of the base portion 205 and has two bent portions 293 and 294, and the tip extends upward. The guide portion 290 includes a support surface 291 for supporting the inserted terminal 60 at the front portion of the bent portion 294 and a guide surface 292 for guiding the terminal 60 to the front end portion. The guide part 290 corrects the lateral displacement of the terminal 60 during insertion and guides the terminal 60 to the normal insertion position. The guide part 290 includes the two bent parts 293 and 294, thereby widening the elastically deformable range. Thereby, the guide part 290 can correct | amend the attitude | position of several terminals 60 from which size differs.

  As shown in FIG. 11, the leaf spring member 220 includes a cantilever-like leaf spring portion 220 a having a notch portion 260. The notch 260 is formed in the leaf spring 220a, reaches from the vicinity of the free end to the end of the fixed end, and further wraps around to the base 205. The rear end reaches the positioning hole 280 before the center of the base 205. The notch portion 260 is a cut-out portion of the interference portion of the leaf spring portion 220a in order to ensure the operability of the retaining pin 50 when the terminal 60 is inserted into the terminal connection structure 20.

When viewed from the back side, the leaf spring member 220 has a front end of the right and left side edges of the base portion 205 having the notch portions 260 at the front and rear, and a press-fit portion 270 and a guide portion 290 at the rear end, as shown in FIG. Bending portions 293 and 294 can be confirmed. This FIG. 12 shows the first leaf spring member 220.
1 shows the back surface side of 1 and also shows the front surface side of the normal assembly posture of the second leaf spring member 2202 to the main body case 10.

  As shown in FIG. 13, the support member 300 is a connection conductor of the terminal connection structure 20 and may be a punched product of a copper alloy sheet having a relatively large thickness in consideration of conductivity. As a result, a relatively large current of about several tens of amperes to one hundred amperes can flow. The support portion 300a includes a flat main body 301 for electrically and mechanically connecting the terminal 60 in the plate thickness direction in cooperation with the leaf spring portion 220a.

  As shown in FIG. 13, the support member 300 includes a positioning hole 330 at the center of the rectangular main body 300 for correcting a front / rear / left / right shift when the terminal connection structure 20 is attached to the main body case 10. Yes. The support member 300 includes circular through holes 310 and 310 in front of and behind the positioning hole 330. The through hole 310 is a hole for penetrating the through pin 530 of the retaining pin 50. The support member 300 includes projecting fixing portions 320 at the front end and the rear end of the left and right side edges. The fixing part 320 is provided for fixing the support member 300 to the main body case 10. The fixing portion 320 is fitted into the support portion 150 of the main body case 10 and is guided to the support base 151 by a taper provided in the support portion 150 as it goes to the back. The fixing unit 320 is held by the support base 151.

  As shown in FIG. 10, the terminal connection structure 20 shares a support member 300 in the center, includes the support member 300, and includes the first terminal connection structure 200 and the support member 300 on the lower side thereof, and on the upper side thereof. A second terminal connection structure 201 is provided. The first terminal connection structure 200 includes a support member 300 and a first leaf spring member 2201, and the second terminal connection structure 201 includes a support member 300 and a second leaf spring member 2202. Each of the first terminal connection structure 200 and the second terminal connection structure 201 includes two sets of terminal connection means 203 and 203. The terminal connection means 203 includes a support part 300a and a leaf spring part 220a, which are the minimum structural units for connection. The terminal connection means 203 sandwiches the terminal 60 from the plate thickness direction through a gap generated between the leaf spring portion 220a and the support portion 300a, and electrically and mechanically connects them. The terminal 60 can hold the terminal 60 with a strong force because the leaf spring portion 220a applies a biasing force to the terminal 60 and the support portion 300a supports the terminal 60.

  As shown in FIG. 10, the positioning hole 280 of the first leaf spring member 2201, the positioning hole 280 of the second leaf spring member 2202, and the positioning hole 330 of the support member 300 are centered in the normal assembly state. Is almost the same. Further, the notch 260 of the first leaf spring member 2201 and the notch 260 of the second leaf spring member 2202 overlap each other in the through hole 310 of the support member 300. As a result, the obstruction that prevents the movement of the retaining pin 50 is removed in the vertical direction.

  The first terminal connection structure 200 and the second terminal connection structure 201 may not include means for holding each other in order to hold a predetermined assembly structure. A means for assembling to the position may be provided.

As shown in FIG. 14, the first terminal connection structure 200 in a predetermined position includes terminal connection means 203, 203 at the front and rear. The terminal 60 at the normal insertion position is electrically and mechanically connected in the plate thickness direction through a gap between the leaf spring portion 220a constituting the terminal connection means 203 and the support portion 300a. The terminal 60 inserted into the front terminal connecting means 203 has a posture in which the electric wire 610 extends forward, and the rear is in the insertion direction. In addition, the terminal 60 inserted into the rear terminal connection means 203 has an orientation in which the electric wire 610 extends rearward and the front direction is the insertion direction.
Also in the second terminal connection structure 201, as shown in FIG. 14, the insertion direction of the terminal 60 is the same as in the case of the first terminal connection structure 200. However, the upper and lower surfaces of the terminal 60 are in reversed positions. That is, both the first terminal connection structure 200 and the second terminal connection structure 201 are inserted in a posture in which the flat surface side (reverse pressure bonding part side) of the terminal 60 is in contact with the support part 300a.

  The retaining pin 50 will be described with reference to the drawings. FIG. 15 is an external perspective view of a retaining pin of the terminal connection device according to the embodiment of the present invention. FIG. 16 is an external perspective view of the retaining pin from the bottom side. 17 is a cross-sectional perspective view taken along line Y17-Y17 of FIG.

  As shown in FIGS. 15, 16, and 17, the retaining pin 50 includes a main body 500 having a rectangular cross section and a through pin 530 having a circular cross section extending downward from the lower surface. The retaining pin 50 is provided to fix the terminal 60 at that position so that the terminal 60 inserted at the regular insertion position of the terminal connection structure 20 does not fall off.

  As shown in FIG. 15, the main body 500 includes a pushing portion 510 on which the fingertip is applied. The main body 500 includes grooves 550 extending in the vertical direction on the left and right side walls. When the main body 500 of the retaining pin 50 is assembled to the housing portion 410 of the cover case 40, the groove 550 projects inwardly, and the first locking portion 420 and the second locking portion on the side surface of the housing portion 410 are projected. This is a relief for avoiding a collision between the portion 421 and the side surface of the main body 500. The groove 550 penetrates the upper surface at the upper end, and stops at the lower end with a locking portion 570 extending in the front-rear direction before the lower surface. The locking portion 570 engages with the second locking portion 421 provided on the inner wall of the housing portion 410 of the cover case 40 with a protruding portion. Thereby, falling off of the retaining pin 50 from the cover case 40 is suppressed. The left and right side walls are provided with notches 560 on the inside in the lower half. Thereby, the latching | locking part 570 can be elastically deformed to the inside / outside direction.

  As shown in FIG. 15, the main body 500 includes a concave insertion port 540 at the upper end of the front surface and the rear surface (not shown). The insertion port 540 is provided for hooking a screwdriver or the like when the inserted retaining pin 50 is pulled out. The insertion port 540 is a rectangular depression having a width and a depth according to the purpose.

  As shown in FIGS. 15 and 17, the main body 500 includes a convex locking portion 575 at the front surface and the lower end portion of the rear surface (not shown). The locking portion 575 engages with the removal preventing portion 430 of the cover case 40 so that the retaining pin 50 assembled to the cover case 40 does not fall outside. At the time of assembly, the retaining pin 50 is assembled from the inside of the cover case 40, and the movable limit position to the outside is determined by the locking portion 575. The main body 500 is positioned in a state of protruding from the upper surface of the cover case 40.

  <Mounting of Terminal Connection Structure> The mounting of the terminal connection structure 20 to the main body case 10 will be described with reference to the drawings. 18A and 18B are process diagrams illustrating an assembly process of the terminal connection device according to the embodiment of the present invention, in which FIG. 18A is a process of assembling the first leaf spring member to the main body case, and FIG. The process of assembling the support member, (C), is a diagram showing the assembled state. 19 is a cross-sectional view taken along line Y19-Y19 in FIG. FIG. 20 is a process diagram illustrating an assembly process of the cover case of the terminal connection device according to the embodiment of the present invention, wherein (A) is a process of assembling the retaining pin and the second leaf spring member to the cover case; (B) is a process of assembling the second leaf spring member to the cover case, and (C) is a diagram showing an assembled state.

  As shown in FIG. 18, the terminal connection structure 20 is attached from the opening 120 of the main body case 10 to the terminal accommodating portion 110 at the back thereof. The mounting may be performed in units of components of the terminal connection structure 20, and may be performed in the order of the first plate spring member 2201, the support member 300, and the second plate spring member 2202.

  As shown in FIG. 18A, the first leaf spring member 2201 is attached to the first terminal accommodating portion 111 of the main body case 10 with the leaf spring portion 220a facing upward. The horizontal direction is positioned by passing the guide portion 170 extending in a columnar shape from the bottom surface of the terminal accommodating portion 110 through the positioning hole 280 in the center of the first leaf spring member 2201. When pushed down in this posture, the press-fit portions 270 provided at the front and rear ends of the left and right side edges are press-fitted into the press-fit slits 140 provided at the bottom surface of the terminal accommodating portion 110. At this time, the first leaf spring member 2201 is mounted at the normal mounting position by inserting it with some pressure.

  The first leaf spring member 2201 mounted at the regular mounting position can connect the terminal 60 inserted from the first insertion port 101 of the main body case 10 at the regular insertion position. Moreover, the notch part 260 of the 1st leaf | plate spring member 2201 exists in the position which overlaps with the penetration part receiving part 160 of the main body case 10, as shown in FIG.

  As shown in FIG. 18B, the support member 300 is mounted so as to overlap the first leaf spring member 2201 in a posture in which the fixing portion 320 provided on the side edge is positioned in the left-right direction. The guide portion 170 extending in a columnar shape is passed through the central positioning hole 330 to determine the normal position in the horizontal direction.

  As shown in FIGS. 18 and 19, the support member 300 proceeds along the support portions 150 provided on the inner surfaces of the left and right side walls of the main body case 10 and hits the support base 151 at the regular mounting position. In the support member 300 in the regular mounting position, the centers of the through holes 310, 310 provided before and after the positioning hole 330 coincide with the centers of the through part receiving portions 160, 160 on the bottom surface of the main body case 10. Further, the notch portion 260 of the first leaf spring member 2201 is located between the through hole 310 and the through portion receiving portion 160, and the movement of the retaining pin 50 from between the through hole 310 and the through portion receiving portion 160. Anything that prevents it has been removed.

  When the fixing portion 320 of the support member 300 is engaged with the support bases 151 on the inner surfaces of the left and right side walls of the main body case 10, the support member 300 is mounted at the regular mounting position as shown in FIG. The first leaf spring member 2201 is held in its normal mounting position.

  Two sets of terminal connection means 203 and 203 are constructed from the first leaf spring member 2201 and the support member 300 in the regular mounting position. As shown in FIG. 14, the terminal connecting means 203 is a minimum structural unit of connection including a leaf spring portion 220a and a support portion 300a, and the terminal 60 is sandwiched in the plate thickness direction by a gap generated between them. Mechanically connect. The leaf spring part 220a applies a biasing force to the terminal 60 and the support part 300a supports the terminal 60, whereby the terminal 60 can be held with a strong force.

  After the support member 300 is mounted at the regular mounting position, the second leaf spring member 2202 is mounted. However, the second leaf spring member 2202 is attached to this position integrally with the cover case 40. Therefore, the subsequent steps will be described in the assembly of the cover case 40.

  <Assembly of Cover Case> The assembly of the cover case 40 will be described with reference to the drawings. FIG. 20 is a process diagram illustrating an assembly process of the cover case of the terminal connection device according to the embodiment of the present invention, wherein (A) is a process of assembling the retaining pin and the second leaf spring member to the cover case; (B) is a process of assembling the second leaf spring member to the cover case, and (C) is a diagram showing an assembled state. 21 is a cross-sectional perspective view taken along line Y21-Y21 of FIG. 22 is a cross-sectional perspective view taken along line X22-X22 of FIG. FIG. 23 is a process diagram illustrating an assembly process of the cover case and the main body case of the terminal connection device according to the embodiment of the present invention, wherein (A) is a perspective view before assembly and (B) is a perspective view after assembly. FIG.

As shown in FIG. 20, the cover case 40 is assembled with a retaining pin 50 and a second leaf spring member 2202. The retaining pin 50 is assembled from below the cover case 40.
As shown in FIG. 22, the retaining pin 50 is prevented from falling off by engaging a locking portion 575 provided on the front and rear surfaces with a retaining portion 430 provided on the front and rear inner surfaces of the upper end of the housing portion 410 of the cover case 40. Can be removed. Further, as shown in FIG. 21, the retaining pin 50 is pulled out when the engaging portions 570 provided on the left and right side surfaces ride on the second engaging portions 421 provided on the left and right inner surfaces of the upper end of the housing portion 410 of the cover case 40. The stand-by posture can be maintained at the stand-by position 501 where the main body 500 of the stop pin 50 protrudes to the outside.

  When the retaining pin 50 is in the standby position 501, as shown in FIG. 21, the tip of the penetrating pin 530 is near or slightly above the notch 260 of the second leaf spring member 2202. As shown in FIGS. 20 and 21, the retaining pin 50 is assembled to the housing portion 410 from the lower surface of the cover case 40, and the locking portion 570 provided on the left and right side surfaces of the main body 500 is the lower end of the housing portion 410 of the cover case 40. By moving over the first locking portions 420 provided on the left and right side surfaces of the cover case 40, the cover case 40 is integrally held.

  After the retaining pin 50 is assembled to the cover case 40, the second leaf spring member 2202 is assembled as shown in FIG. The second leaf spring member 2202 is assembled in such a posture that the surface where the press-fit portion 270 extends is up and the leaf spring portion 220 is down. The 2nd leaf | plate spring member 2202 is assembled | attached so that the penetration pin 530 of the retaining pin 50 assembled | attached previously may pass the notch part 260. FIG. The press-fit portion 270 of the second leaf spring member 2202 is press-fitted into a slit 450 provided on the bottom surface of the cover case 40 and is fixed at a regular assembly position. As shown in FIG. 20, the second leaf spring member 2202 fixed to the cover case 40 at the regular assembly position is provided so as to overlap the bottom surface of the cover case 40, and the center of the central positioning hole 280 is the cover case. 40 coincides with the center of the positioning hole 470 on the bottom surface.

  <Assembly of Cover Case> As shown in FIG. 23, the cover case 40 is fitted from the opening 120 on the upper surface of the main body case 10 into the cover accommodating portion 121 connected thereto. A first leaf spring member 2201 and a support member 300 are already attached to the main body case 10. The cover case 40 is assembled so as to overlap the support member 300. The presser portions 460 provided on the left and right side surfaces of the cover case 40 are sunk along the groove portions 122 a provided on the left and right side walls of the terminal accommodating portion 110. At the normal fitting position, the locking portion 461 of the presser portion 460 engages with the holding portion 122 of the groove portion 122a and is fixed at this position.

  When the cover case 40 is fitted into the main body case 10, the terminal connection device 1 is assembled as shown in FIG. The terminal connection device 1 includes terminal insertion ports 100 on the front surface and the rear surface. The terminal insertion port 100 is provided with a first insertion port 102 and a second insertion port 101 over the upper and lower stages of the front surface and the rear surface. As shown in FIG. 23, a terminal accommodating portion 110 is provided in the back of the insertion slot 100. There is a movable direction of the retaining pin 50 in the vertical direction which is a direction orthogonal to the insertion direction of the terminal 60. The retaining pin 50 exposes the main body from the case 5 when it is in the standby position 501 at the upper end. The through pin 530 of the retaining pin 50 moves the terminal accommodating portion 110 in the vertical direction. In the retaining pin 50, a position where the upper surface of the main body 500 is flush with the upper surface of the case 5 is a regular retaining position 502. The terminal 60 inserted at this position is held.

<Second Terminal Connection Structure> The second terminal connection structure 201 is constructed by fitting the cover case 40 into the main body case 10. As illustrated in FIG. 10, the second terminal connection structure 201 includes a second leaf spring member 2202 and a support member 300. Second leaf spring member 220
2 includes two leaf spring portions 220a and 220a, and the support member 300 includes two support portions 300a and 300a. The leaf spring part 220a and the support part 300a constitute the terminal connection means 203 which is the minimum unit of connection. The thickness direction of the terminal 60 is clamped by the terminal connection means 203, and an electromechanical connection state is obtained.

  <Terminal Connection> Connection of the terminal 60 will be described with reference to the drawings. FIG. 24 is a connection procedure diagram illustrating a process of inserting a crimp terminal and pushing a retaining pin into the terminal connection device according to the embodiment of the present invention. FIG. 24A is a perspective view illustrating the insertion start of the crimp terminal. FIG. 4B is a perspective view showing a state where the insertion of the crimp terminal is completed, and FIG. 4C is a perspective view showing a state where the front retaining pin is pushed down to the retaining position. 25 is a cross-sectional tilt view taken along line X25-X25 in FIG. FIG. 26 is an external perspective view showing a state where four crimp terminals are inserted into the terminal connection device according to the embodiment of the present invention.

The retaining pin 50 is held at a standby position 501 as shown in FIGS. The terminal 60 connected to the end of the electric wire 610 is a so-called round crimp terminal having a hole in the center. Two terminals 60 can be inserted from the front and two from the rear. The following description will be mainly made on the front surface.
As shown in FIGS. 11 and 25, the terminal 60 of the first insertion port 101 (lower side) is inserted in a posture in which the flat surface is up. The terminal of the second insertion port 102 (upper side) is inserted with the flat surface facing down. The position of the terminal 60 inserted from the insertion port 100 is corrected by the guide portion 290 of the terminal connection structure 20 and proceeds to the back. When the tip of the terminal 60 starts to engage with the leaf spring portion 220a, an insertion resistance is felt at the fingertip. When the terminal 60 is pushed along the support portion 300a while the leaf spring portion 220a is elastically deformed, the leading end abuts on the guide portion 170, and this is the normal insertion position. The terminal 60 is held at the normal insertion position.

When the terminal 60 is inserted into the first insertion port 101 and the second insertion port 102 to the normal insertion position in the same manner, both the terminals 60 and 60 are electrically and mechanically connected by the terminal connection means 203 as shown in FIG. Connected.
The retaining pin 50 is in the upper standby position 501 as shown in FIG. The terminal 60 in the middle of insertion hits the guide portion 290 in the left-right direction. Thereby, the positional deviation of the terminal 60 in the left-right direction is corrected. When the terminal 60 is further inserted, it contacts the contact portion 230 of the leaf spring portion 220a. At this time, the back surface of the terminal 60 is in contact with the support portion 300 over the entire flat surface. If the insertion is continued in this state, the tip of the terminal 60 comes into contact with the guide portion 170. This position is a normal insertion position of the terminal 60. After the terminal 60 is inserted into the terminal connection means 203 of the first terminal connection structure 200 and the second terminal connection structure 201, respectively, the retaining pin 50 is switched from the standby position 501 to the retaining position 502.

  This state is maintained so that a stable connection state does not change even if an inadvertent force is applied to the electric wire from the outside. The retaining pin 50 is switched from the standby position 501 to the retaining position 502. As shown in FIG. 25, the retaining pin 50 is pushed down from the state in which the main body 500 protrudes from the case 5 to be in a flush state. In the process, the penetration pin 530 passes through the notch 260 of the second leaf spring member 2202, passes through the hole 600 of the terminal 60 in the second terminal accommodating portion 112, and further passes through the through hole 310 of the support portion 300a. It passes through the hole 600 of the terminal 60 in the first terminal accommodating part 111, passes through the notch part 260 of the first leaf spring member 2201, and finally passes through the through part receiving part 160 on the bottom surface of the terminal accommodating part 110 of the main body case 10. The leading end is fitted and the regular retaining position 502 is reached.

As shown in FIG. 25, the terminal 60 in the first terminal accommodating portion 111 and the terminal 60 in the second terminal accommodating portion 112 are both electrically and mechanically connected at the normal insertion position by one retaining pin 50. The state will be maintained. The electromechanical connection between the terminal 60 and the terminal connection structure 20 is borne by the biasing force acting between the leaf spring portion 220a and the support portion 300a. This is reinforced by the scissors action of the retaining pin 50 in the direction orthogonal to the direction of withdrawal. Since the retaining pin 50 can be switched between the retaining position 502 and the standby position 501 that is the release position by only moving in the vertical direction, it is possible to connect the terminal 60 with a simple operation without requiring a dedicated jig. The terminal connection device 1 capable of performing the above is obtained.

  As shown in FIG. 26, the terminal connection device 1 includes two insertion ports 100 on the front surface and two insertion ports 100 on the rear surface. Thereby, the terminal connection apparatus 1 can perform the electromechanical connection of the four terminals 60 in total. When the terminal 60 is inserted from the insertion port 100 to the normal insertion position and the retaining pin 50 is switched from the standby position 501 to the retaining position 502, the four terminals 60 are electrically and mechanically connected by the terminal connecting device 1. It will be in the state. When releasing the connection state and removing the terminal 60 from the terminal connection device 1, the retaining pin 50 is pulled up to the standby position 501, and the through pin 530 is removed from the hole 600 of the terminal 60. Since the mechanical force that hinders the removal operation of the terminal 60 in this state is removed, the terminal 60 can be removed by applying a force equivalent to the operation of pulling out the terminal 60 that is normally performed.

  As described above, the terminal connection device 1 according to the present invention can easily connect and remove the terminal 60 without using a tool such as a screwdriver, and the electromechanical connection has good conductivity. The entire surface of the terminal 60 is contacted with a relatively thick plate of oxygen-free copper. Further, the pressing is performed by an elastic piece made of stainless steel having high rigidity. Thereby, the terminal connection device 1 that can be used for connection where a relatively large current flows and in which the terminal 60 can be easily attached and detached is obtained.

<Connection> The terminal connection device 1 according to the present invention includes a connecting portion 180 on the side surface of the main body case 10 as shown in FIG. Thereby, the terminal connection apparatus 1 can be connected according to the required number of terminals. The connection can be easily performed by fitting the concave portion of the connecting portion 180 and the convex portion of the connecting portion 180 together. If necessary, the terminal connection device 1 can be assembled where necessary by connecting the fixed base 181 to the side surface after connection.
As shown in FIG. 28, the terminal connection device 1 according to the present invention can easily assemble a branch circuit. Further, the terminal connection device 1 according to the present invention can easily assemble a return circuit.

<Effect> The terminal connection device 1 according to the present embodiment includes the terminal connection means 203 including the support portion 300a and the leaf spring portion 220a. Thereby, the terminal connection apparatus 1 which can respond to both a round type terminal and an open type terminal is obtained.
-The terminal connection apparatus 1 which concerns on this embodiment consists of a board | plate material of the copper alloy with favorable electroconductivity in which the support part 300a is comparatively plate-thick, and can contact the terminal 60 on a wide surface. Further, the leaf spring portion 220a is made of a stainless material having a relatively high rigidity. Thereby, the terminal connection device 1 that can be used for connection where a large current of about several tens of amperes to one hundred amperes flows is obtained.

The terminal connection device 1 according to the present embodiment can connect four terminals 60 with one terminal connection structure 20. Further, the terminal connection structure 20 shares one plate spring member 220 and is electrically connected. As a result, the terminal connection device 1 that can easily assemble a 1 → 2 branch circuit and a 1 → 3 branch circuit is obtained.
-The terminal connection apparatus 1 which concerns on this embodiment is provided with the two terminal insertion ports 100 up and down on one side. Thereby, the terminal connection apparatus 1 which can assemble a return circuit without drawing an electric wire is obtained.

-The terminal connection apparatus 1 which concerns on this embodiment is provided with the leaf | plate spring part 220a, and the leaf | plate spring part 220a is
The elastic piece extends along the insertion direction of the terminal 60. Further, the insertion side of the terminal 60 is provided with a guide taper. Thereby, the terminal connection apparatus 1 provided with the terminal connection means 203 which can insert the terminal 60 smoothly and does not apply an excessive force to the leaf | plate spring part 220a is obtained.
The terminal connection device 1 according to this embodiment is protected by an insulating case 5. Thereby, since there is no exposed part in a connection part, the terminal connection apparatus 1 without a possibility that an inadvertent electrical contact accident may arise is obtained.

The terminal connection device 1 according to this embodiment is protected by an insulating case 5. Thereby, the malfunction by a dust and a water drop does not arise in a connection part, but the highly reliable terminal connection apparatus 1 is obtained.
-The terminal connection apparatus 1 which concerns on this embodiment consists of the case 5 with the main body case 10 and the cover case 40 fitted by this. Furthermore, the terminal connection structure 20 is mounted in a space below the space in which the cover case 40 is fitted. Thereby, the terminal connection apparatus 1 with easy assembly is obtained.

In the terminal connection device 1 according to the present embodiment, the main body case 10 and the cover case 40 are both provided with engaging portions. Thereby, the terminal connection apparatus 1 which can be assembled by one-touch which does not require a joining member, a joining jig | tool, etc. is obtained.
The terminal connection device 1 according to this embodiment includes a retaining pin 50 that prevents the terminal 60 from coming off, and the retaining pin 50 is configured to switch between the standby position 501 and the retaining position 502. This can be done only by inserting and removing. Thereby, the terminal connection apparatus 1 which can fix the terminal 60 only by inserting / removing the retaining pin 50 is obtained.

The terminal connection device 1 according to the present embodiment can simultaneously fix the two terminals 60 inserted in the upper and lower two stages with one retaining pin 50.
In the terminal connection device 1 according to this embodiment, the retaining pin 50 is assembled to the cover case 40. Next, it is assembled to the main body case 10. Moreover, the retaining pin 50 is provided with a locking structure so that it does not fall off from the assembled cover case 40. Thereby, the terminal connection apparatus 1 with easy assembly is obtained.

In the terminal connection device 1 according to the present embodiment, the retaining pin 50 assembled to the cover case 40 has a standby position 501 before receiving the terminal 60 and a retaining position 502 for fixing the terminal 60. And this switching can be performed only by inserting / removing the retaining pin 50. Thereby, the terminal connection apparatus 1 which can perform fixing release operation of the moderate terminal 60 is obtained.
The terminal connection device 1 according to the present embodiment is used in a state where the terminal 60 is connected and the retaining pin 50 is pushed down to the retaining position 502. In this state, the outermost surface of the retaining pin 50 is flush with the surface of the case 5. Thereby, the box-shaped terminal connection apparatus 1 comprised by the flat surface without an unevenness | corrugation is obtained.

-The terminal connection apparatus 1 which concerns on this embodiment is provided with the insertion port 540 for pulling out the retaining pin 50 in the retaining position 502. FIG. As a result, the terminal connection device 1 can be obtained which is safe without being hooked carelessly, and can be pulled out by pulling the tip of the driver.
The terminal connection device 1 according to the present embodiment can electrically and mechanically connect the four terminals 60 to the common leaf spring member 220a. As a result, the terminal connection device 1 that can easily assemble a 1 → 3 branch circuit and a 1 → 2 branch circuit is obtained.

-The terminal connection apparatus 1 which concerns on this embodiment is provided with the terminal insertion port 100 in the upper and lower two steps | paragraphs on one side surface. Thereby, the terminal connection apparatus 1 which can assemble a return circuit easily is obtained.
-The terminal connection apparatus 1 which concerns on this embodiment is provided with the connection part 180 on the side surface. Thereby, the terminal connection apparatus 1 according to the number of terminals can be easily connected.
-The terminal connection apparatus 1 which concerns on this embodiment can connect the fixing stand 181 to the connection part 180 of a side surface. Thereby, the terminal connection structure which can be easily fixed to the support is obtained.
-The terminal connection apparatus 1 which concerns on this embodiment is provided with the terminal guide part which can be elastically deformed by the horizontal direction comprised by two bending parts. Thereby, since the position correction range in the horizontal direction is expanded, the terminal connection device 1 that can correspond to the types of terminals 60 having different sizes is obtained.
A terminal connection device that can be used not only to connect round terminals but also to open terminals, and in particular, with respect to round terminals and laterally open terminals, the retaining effect by the retaining pin 50 is effectively exhibited. 1 is obtained.

DESCRIPTION OF SYMBOLS 1 Terminal connection apparatus 5 Case 10 Main body case 100 Insertion port 101 1st insertion port 102 2nd insertion port 110 Terminal accommodating part 111 First terminal accommodating part 112 Second terminal accommodating part 120 Opening part 121 Cover accommodating part 122 Holding part 122a Groove part 130 wire housing part 131 first wire housing part 132 second wire housing part 133 partition wall 134 back wall 135 slit 140 press-fit slit 150 support part 160 penetrating part receiving part 170 guide part 180 coupling part 181 fixing base 20 terminal connection structure 200 1 terminal connection structure 201 2nd terminal connection structure 2 3 terminal connection means 205 base 220 leaf spring member 220a leaf spring portion 2201 first leaf spring member 2202 second leaf spring member 230 contact portion 240 bending portion 250 coupling portion 260 notch 270 Press-fit part 280 Positioning hole 290 Guide part 291 Support surface 292 Inner surface 293 Bending portion 294 Bending portion 300 Support member 300a Supporting portion 301 Main body 310 Through hole 320 Fixing portion 330 Positioning hole 340 Contact portion 40 Main body 401 Upper surface 402 Lower surface 403 Side surface 410 Storage portion 411 Insertion port 412 Opening portion 420 First Locking part 421 Second locking part 430 Removal prevention part 440 Insertion guide 450 Slit 460 Holding part 461 Locking part 470 Positioning hole 50 Retaining pin 500 Main body 501 Standby position 502 Retaining position 510 Pushing part 530 Through pin 540 Difference Slot 550 Groove 560 Notch 570 Locking portion 575 Locking portion 60 Crimp terminal 600 Hole 610 Electric wire 620 Contact portion

Claims (14)

A terminal connection device comprising a terminal connection structure made of a conductor capable of connecting a plate-like terminal connected to an end of an electric wire having a conductor, wherein the terminal connection structure includes a plate-like support portion that supports the terminal; A terminal connection device characterized by comprising at least two sets of terminal connection means having a leaf spring portion for applying a biasing force to the terminal. In the terminal connection structure, the support portions extending in a plate shape are arranged in the center at the upper stage in the terminal insertion / removal direction, the two terminal connection means, and the lower stage in the terminal insertion / removal direction, the two terminal connections. 2. The terminal connection device according to claim 1, wherein the terminal connection means arranged in two in each of the upper stage and the lower stage is characterized in that the insertion / extraction directions of the terminals are opposite to each other. The terminal connection device according to claim 2, wherein the leaf spring portion has a cantilever structure in which one end is a free end and the other end is a fixed end, and the free end extends in an insertion direction of the terminal. 4. The terminal connection device according to claim 2, wherein the leaf spring part and the support part are provided with terminal connection means formed from a single metal plate. The terminal connection device according to claim 2, wherein the leaf spring portion and the support portion include terminal connection means configured by combining different members. The said leaf | plate spring part is provided with the cantilever which has a notch part in the center, and the said cantilever is provided with the protrusion-shaped contact part near the front of a front-end | tip, The one of Claims 3-5 characterized by the above-mentioned. The terminal connection apparatus of description. The terminal is a round terminal having a hole in the center or an open type terminal, and the support part is provided with a hole of approximately the same size as the hole, and the leaf spring part is larger than the hole. A notch is provided, and when the terminal is inserted to the normal insertion position of the terminal connecting means, the center of the hole of the terminal and the center of the hole of the support part are substantially coincided with each other, and the cut The notch is provided so as to overlap with these holes, and the terminal is fixed at a normal insertion position by a retaining pin inserted from above or below so as to penetrate these two holes. The terminal connection device according to claim 1. 7. The terminal connecting means according to claim 2, further comprising: terminal connecting means capable of positioning and fixing the two terminals inserted into the normal insertion positions of the upper and lower terminal connecting means by the one retaining pin. The terminal connection device according to the item. The terminal connection structure is protected by a case made of an insulating material, and the terminal insertion port is provided on each of two opposing surfaces of the case, and the retaining pin insertion port is provided on the upper or lower surface of the case. And the terminal is positioned and fixed at the normal insertion position by the retaining pin inserted from the insertion port in a state where the terminal is inserted from the insertion port and accommodated at the normal insertion position. The terminal connection device according to 7 or 8. The case includes a terminal accommodating portion that accommodates the terminal connection structure, a cover accommodating portion that is above the terminal accommodating portion and communicates with an opening on the upper surface, and is located in front and rear of the terminal accommodating portion, A main body case having a wire housing portion communicating from the insertion port on the rear surface, and a cover case fitted into the cover housing portion, the cover case being inserted into a through hole through which the retaining pin is inserted and removed. With a mouth,
In the case, the terminal connection structure is set in the terminal accommodating portion through the opening, and the cover case is fitted into the cover accommodating portion through the opening, whereby the terminal connecting structure becomes the terminal accommodating portion. The terminal connection device according to claim 9, wherein the terminal connection device is characterized by being fixed to the terminal. The cover case and the main body case are provided with locking means at corresponding positions, and the locking means acts when the cover case is fitted to the normal storage position of the cover storage portion of the main body case. The terminal connection device according to claim 10, which has features. The terminal according to claim 10 or 11, wherein the retaining pin can be attached to the through hole of the cover case in a direction opposite to the fitting direction, and is prevented from falling off by a locking means. Connected device. The case according to any one of claims 9 to 12, wherein the case includes a connecting means on a side surface so that the connection can be easily performed in a lateral direction, and the case can be freely increased or decreased according to the required number of connection terminals. The terminal connection apparatus of description. A terminal connection method of the terminal connection device,
The two terminals include a first step of inserting the terminal from the insertion port of the upper stage and the lower stage to a normal insertion position, and a second step of inserting the retaining pin from the insertion port to a normal retention position. A terminal connection method characterized in that is fixed at a regular insertion position.

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