JP5399793B2 - Female terminal - Google Patents

Description

  The present invention relates to a female terminal that incorporates a spring member having a plurality of contact spring pieces and is mainly applied to energization of a large current.

  FIG. 9 shows one form of a conventional female terminal.

  The female terminal 51 includes a pair of conductive metal terminal bodies 54 formed of a male terminal fitting portion 52 and a wire connection portion 53 and a conductive metal front and rear pair assembled to face the inside of the male terminal fitting portion 52. It is comprised with the spring member 55, and is applied to the connection of large currents, such as an electric vehicle.

  The spring member 55 is formed by forming each contact spring piece 57 between a plurality of slits 56 in the vertical direction, and is fixed by crimping the locking groove 58 of the male terminal fitting portion 52 with a chisel or the like.

  FIG. 10 shows another form of a conventional female terminal.

  The female terminal 61 is provided at a terminal of a bus bar 62 connected to a high-current circuit such as an electric vehicle, and includes a rectangular cylindrical terminal main body 63 and a spring member 64 assembled in the terminal main body. Has been.

  The terminal body 63 has contact protrusions on the inner surfaces of the upper wall 65 and the bottom wall 66, and a spring member 64 is disposed on the bottom wall 66 so as to face the protrusions of the upper wall 65. The spring member 64 has in parallel a plurality of spring pieces 69 protruding obliquely upward from one side wall 67 of the terminal body 63 toward the other side wall 68. The male terminals are inserted along the spring pieces 69 and the protrusions from the front opening of the terminal body 63.

JP-A-6-302349 (FIG. 1) JP 2007-250362 A (FIG. 3)

  However, in the conventional female terminal 51 of FIG. 9, the spring member 55 must be fixed to the terminal body 54 by caulking work such as chisel, and the spring member 55 has a fixed strength and attachment position. There was a concern that variations would easily occur. In addition, since the plurality of spring pieces 57 of the spring member 55 simultaneously contact the male terminal when the male terminal is inserted or removed, there is a concern that the insertion force and the detachment force are high, and the male terminal insertion / detachment workability is reduced. there were.

  In the conventional female terminal 61 of FIG. 10, for example, when the spring member 64 is fixed to the terminal main body 63 by the locking means, the spring member 64 may become loose due to looseness or gaps of the locking means. There was a concern that the spring member 64 may be detached, and the spring member 64 may be deformed non-uniformly due to backlash or the like, causing variations in the contact pressure of each spring piece 69 with respect to the male terminal, resulting in a decrease in electrical contact. In addition, since the male terminal is sandwiched between the protrusion and the spring member 64 and brought into contact, when the plate-shaped male terminal receives a strong force in the thickness direction, the contact between the protrusion and the male terminal is reduced. Since the plurality of spring pieces 69 of the spring member 64 are in contact with the male terminal at the same time when the male terminal is inserted or removed, there is a concern that the insertion force or the detachment force is high and the insertion / detachment workability is lowered.

  In view of the above points, the present invention can always maintain the electrical contact property of the spring member with respect to the male terminal, and in addition to that, the spring member can be firmly fixed to the terminal body without misalignment, And it aims at providing the female terminal which can perform insertion / extraction of a male terminal with a comparatively small force with sufficient workability | operativity.

In order to achieve the above object, a female terminal according to claim 1 of the present invention is a female terminal composed of a conductive rectangular cylindrical terminal body and a conductive spring member assembled in the terminal body. The spring member is formed by cutting and raising two upper and lower opposing substrate portions, a plurality of opposing contact spring pieces, and left and right connecting plate portions connecting the upper and lower substrate portions, It is provided with the engaging part which is provided in a connection board part and engages with the latching | locking part of this terminal main body.
According to a second aspect of the present invention, there is provided the female terminal according to the first aspect, wherein the plurality of pairs of contact spring pieces includes an outward portion protruding outward from the upper and lower substrate portions, and an upper and lower substrate portion. An inwardly projecting inward portion, the outward portion elastically contacting the inner surface of the terminal body, and the inwardly facing portion elastically contacting a male terminal inserted inside the spring member. Features.

According to the configuration of the female terminal according to claim 1, the upper and lower board portions that connect the plurality of contact spring pieces are connected by the left and right connecting plate portions, and the board portion and the connecting plate portion form a rectangular frame shape. In this state, the terminal spring is locked (fixed) by the locking portion and the engaging portion, so that the contact spring piece is not bent when the male terminal is inserted. Contact the male terminal securely with uniform contact pressure. In addition, the upper and lower contact spring pieces reliably contact the male terminal with a uniform contact pressure while urging the male terminal with a spring force equal to the thickness direction of the male terminal plate for self-alignment. Examples of the locking part and the engaging part include a projecting piece, a protrusion, an arm, a hole, and a concave part.

According to a third aspect of the present invention, there is provided the female terminal according to the first or second aspect , wherein the pair of connecting plate portions are disposed before and after the substrate portion.

  With the above configuration, the upper and lower substrate portions are connected by a pair of front and rear connection plate portions, an opening is formed between the front and rear connection plate portions, and the upper and lower substrate portions can be compressed and bent in the height direction and the width direction, The assembling property of the spring member to the terminal body is enhanced.

The female terminal according to a fourth aspect is the female terminal according to any one of the first to third aspects, wherein the engaging portion is an engaging piece projecting outward from the connecting plate portion, The portion is a locking hole.

  With the above configuration, when the spring member is assembled to the terminal body, the engaging piece is bent and enters and engages into the locking hole, and the engaging piece is elastically restored and comes into contact with the end surface of the locking hole by surface contact. Demonstrates strong locking (fixing) force.

According to a fifth aspect of the present invention, there is provided the female terminal according to the fourth aspect , wherein the engaging pieces are provided at the front and rear ends of each pair of connecting plate portions according to the third aspect , and each pair of engaging pieces is connected to each other. It is characterized by engaging with a stop hole.

  With the above configuration, the pair of engaging pieces for each connecting plate portion abuts on the front and rear end faces of the locking hole by surface contact and exerts a strong locking (fixing) force.

A female terminal according to a sixth aspect is the female terminal according to any one of the first to fifth aspects, wherein the plurality of pairs of contact spring pieces are arranged side by side in the insertion direction of the male terminal.

  With the configuration described above, in the process of inserting the male terminal into the spring member, the number of contact spring pieces that come into contact with the male terminal is sequentially increased, thereby enabling smooth insertion with a small insertion force. Further, in the process of removing the male terminal from the spring member, the number of contact spring pieces that come into contact with the male terminal is sequentially reduced, so that smooth removal can be achieved.

A female terminal according to a seventh aspect is the female terminal according to any one of the first to sixth aspects, wherein upper and lower protrusions that allow insertion of a male terminal are provided at the front and rear ends of the terminal body. wherein the contact spring piece protrudes inwardly than collision portion under the upper.

  With the above configuration, when an external force in the vertical direction is applied to the male terminal, the male terminal comes into contact with the upper and lower protrusions to prevent further movement, and the upper and lower contact spring pieces are securely in contact with the male terminal. Maintained at.

According to the first and second aspects of the present invention, each substrate portion and each connecting plate portion of the spring member are fixed to the terminal body with high rigidity, so that each substrate portion is bent when the male terminal is inserted. There is no unnecessary deformation, so that the upper and lower contact spring pieces reliably contact the male terminal with uniform contact pressure, thereby improving the reliability of the electrical connection. In addition, the upper and lower contact spring pieces automatically align the male terminal in the thickness direction of the male terminal, so that each contact spring piece reliably contacts the male terminal with uniform contact pressure, and the reliability of electrical connection is improved. improves. Even when the male terminal moves in the thickness direction by an external force, the upper and lower contact spring pieces follow the movement of the male terminal and maintain contact with the male terminal, thereby improving the reliability of electrical connection.

According to the invention described in claim 3, since the upper and lower substrate portions can be bent by the pair of front and rear connecting plate portions, the upper and lower substrate portions are bent and the spring member is easily assembled in the terminal body with good workability. be able to.

According to the fourth aspect of the invention, the engagement piece can be bent and easily engaged with the engagement hole with good workability, and the engagement piece engaged with the engagement hole is locked by surface contact. By abutting in the hole and firmly and firmly fixing the spring member to the terminal body, the position of the spring member in the terminal body can be reliably held when the male terminal is strongly inserted and removed.

According to the fifth aspect of the present invention, the pair of engaging pieces for each connecting plate portion abuts against the front and rear end surfaces of the locking hole, so that the spring member is more securely and firmly fixed to the terminal body, The position of the spring member in the terminal body can be more reliably maintained when the terminal is strongly inserted and removed.

According to the sixth aspect of the present invention, when the male terminal is inserted / removed, the number of contact spring pieces that come into contact with the male terminal sequentially increases / decreases, so that the male terminal can be inserted / removed with a relatively small force and with good workability. .

According to the seventh aspect of the present invention, even when an external force is applied to the male terminal in the vertical direction, the male terminal is in contact with the upper and lower protrusions to prevent further movement, while the upper and lower contact spring pieces are connected to the male terminal. Since the state in which the terminal is reliably contacted is maintained, the reliability of the electrical connection is improved.

It is a whole perspective view showing one embodiment of a female terminal concerning the present invention. It is a longitudinal cross-sectional view which shows the state which inserts a male terminal in a female terminal. It is a longitudinal section showing one form of contact with a female terminal and a male terminal. It is a perspective view which shows one form of the spring member with which it mounts | wears in a female terminal main body. It is a front view which shows a female terminal. A spring member is shown in detail, (a) is a front view, (b) is a side view. It is a longitudinal cross-sectional view which shows the state which inserted the male terminal in the spring member. It is a side view which shows the problem of the spring member different from this invention. It is a perspective view which shows one form of the conventional female terminal. It is the perspective view which notched the principal part which shows the other form of the conventional female terminal.

  1 to 3 show an embodiment of a female terminal according to the present invention.

  As shown in FIG. 1, the female terminal 1 includes a conductive metal terminal body 3 formed integrally with a conductive metal bus bar 2, and a conductive metal spring member 4 assembled and fixed inside the terminal body 3. It consists of and. A base end portion (not shown) of the bus bar 2 is tightened and connected to a high voltage connection side with a bolt. A terminal body 3, which is a flat rectangular cylindrical holding portion for the spring member 4, is integrally provided at the distal end portion of the bus bar 2.

  The terminal body 3 forms a peripheral wall with upper and lower wide horizontal wall portions 5 and 6 and left and right narrow vertical wall portions 7, and the upper wall 5 is divided and joined at the center (the divided surface is denoted by reference numeral 8). 2), protrusions 10 (FIG. 2) for contacting and contacting the male terminals 9 (FIG. 2) are provided at the front and rear ends of the upper wall 5 and the lower wall 6, respectively. A pair of front and rear rectangular locking holes 11 are provided.

  A lower wall (bottom wall) 6 continues to the bus bar 2 on the same plane, and both side walls 7 are formed upright on both left and right ends of the lower wall 6, and a pair of upper wall portions 5 are bent inward from the upper ends of the side walls 7. Terminal body 3 is formed. The shape of the bus bar 2 is appropriately set according to the shape of the connection side. It is also possible to provide an electric wire connecting portion (not shown) in the rear portion of the terminal body 3 in place of the bus bar 2.

  As shown in FIG. 2, the male terminal 9 is inserted through from the front opening 12 to the rear opening 13 of the terminal body 3. Both side walls 7 are extended rearward, and the rear extension 14 protects the tip of the male terminal 9. The distance between the upper and lower protrusions 10 at the front and rear ends of the terminal body 3 (reference A in FIG. 3) is set to be larger than the plate thickness T of the male terminal 9. The spring member 4 is mounted between the front and rear protrusions 10, and the front and rear ends 4 a of the spring member 4 are slightly separated from the inner surface of the protrusion 10. The protrusion 10 is formed by punching out (bulging) the upper and lower wall portions 5 and 6 of the terminal body 3.

  As shown in FIG. 4 as an example of the spring member 4, the spring member 4 includes upper and lower horizontal base plate portions 15 and 16 and a pair of vertical connecting plate portions 17 having narrow widths at the front and rear ends of the left and right (side portions). And a plurality of contact spring pieces 18, 19 formed by being cut and raised (cut down) inwardly from the upper and lower substrate parts 15, 16, and projecting outward from the front and rear ends of each connecting plate part 17. And a pair of vertical engagement pieces 20.

  A plurality of upper and lower contact spring pieces 18 and 19 are arranged in parallel from the front end to the rear end of each substrate portion 15 and 16. The size shapes of the upper and lower contact spring pieces 18 and 19 are the same, and the spring force is also the same. Although the number of contact spring pieces 18 and 19 in this example is three each, it may be two or four according to the magnitude of the current value to be energized, or at least one each. (The larger the current value, the greater the number of contact spring pieces 18, 19).

  Each of the board portions 15 and 16 is formed with a horizontally long opening 21 that is caused by the spring pieces 18 and 19 being cut and raised by a press. A large rectangular side opening 22 is formed between the connecting plate portions 17 at the front and rear ends, and a plurality of inclined support protrusions 23 are provided above and below the side opening 22. The spring pieces 18 and 19 are formed in a state in which the substrate portions 15 and 16 and the connecting plate portion 17 are flatly developed. After the spring pieces 18 and 19 are formed, the substrate portions 15 and 16 and the connecting plates are formed. Each of the engaging pieces 20 is bent at a right angle, and the cut end 15 a at the right end of the upper substrate portion 15 is overlapped with the flange portion 17 a at the upper end of one connecting plate portion (side wall) 17. In this state, it is locked by the downward locking piece 24 (FIG. 5).

  As shown in FIG. 1, each pair of engaging pieces 20 of the spring member 4 is engaged with each locking hole 11 of the terminal body 3, and the front engagement of each pair of engaging pieces 20 in each locking hole 11. The combined piece 20 comes into contact with the front end face of the locking hole 11, the rear engaging piece 20 comes into contact with the rear end face of the locking hole 11, and the spring member 4 is a terminal without positional displacement (backlash) in the front-rear direction. It is firmly fixed to the main body 3.

  The assembly of the spring member 4 to the terminal body 3 can be performed, for example, in a state where the terminal body 3 is unfolded. Since the spring member 4 has the front, rear, upper, lower, left and right openings 12, 13, 21, and 22, the spring member 4 can flexibly bend. For example, in a state where both side walls 7 are raised from the lower wall 6 of the terminal body 3 and only the upper wall 5 is vertically expanded, the terminal body 3 is compressed and bent in the width (horizontal) direction. It is assembled inside (the engagement piece 20 can be easily inserted into the locking hole 11 by compressing in the width direction), and then the upper wall 5 is bent horizontally.

  Alternatively, after the terminal main body 3 is formed into a box shape as shown in FIG. 1, the upper and lower substrate portions 15 and 16 of the spring member 4 of FIG. It can also be inserted and assembled. As shown in FIG. 5 (front view), at least the upper and lower protrusions 10 at the front end of the terminal body 3 are arranged with respect to the intermediate portion excluding the left and right ends of the upper and lower substrate portions 15 and 16 of the spring member 4. It is possible to insert the spring member 4 inside the upper and lower protrusions 10 by bending the intermediate portions of the upper and lower substrate portions 15 and 16.

  Since each engagement piece 20 has flexibility, it engages with the locking hole 11 while being bent along the side wall 7 of the terminal body 3. This is better in assembling workability than the former when the terminal body 3 is assembled in the unfolded state. The left and right engaging pieces 20 securely fix the spring member 4 to the terminal body 3 without rattling. As shown in FIG. 5, a pair of short upper protrusions 10 and one long lower protrusion 10 are arranged.

  As shown in FIG. 2, the upper and lower spring pieces 18, 19 protrude upward and downward from the board portions 15, 16, and the inward portions 18 a, 19 a of the spring pieces 18, 19 are male terminal insertion spaces of the terminal body 3. It has a short contact 18b, 19b that protrudes obliquely toward the front and horizontally at the protruding tip, and the outward portions 18c, 19c of the spring pieces 18, 19 are inclined toward the upper and lower wall portions 5, 6 of the terminal body 3. It has short support parts 18d and 19d which are horizontal at the protruding tip.

  The support portions 18d and 19d at the tips of the outward portions 18c and 19c of the upper and lower spring pieces 18 and 19 elastically contact (contact) the inner surfaces of the upper and lower wall portions 5 and 6 of the terminal body 3, and the springs The member 4 is aligned (centripetal) with the center of the terminal body 3 in the height direction. In this state, the male terminal 9 is inserted, and the contact points 18b, 19b at the tips of the inward portions 18a, 19a of the upper and lower spring pieces 8, 9 are in elastic contact with the upper and lower flat surfaces of the male terminal 9. The spring member 4 includes left and right connecting plate portions 17 for the left and right side walls 7 in FIG. 5, outward portions 18 c and 19 c of the upper and lower spring pieces 18 and 19 for the upper and lower wall portions 5 and 6, and a locking hole 20. The terminal 20 is in electrical contact with the engagement piece 20 with respect to FIG.

  As shown in FIG. 2, the male terminal 9 is smoothly inserted with low friction along the inclination direction of the spring pieces 18 and 19. The distance (gap) between the projecting tips 18b and 19b of the upper and lower spring pieces 18 and 19 in the free state is smaller than the plate thickness of the male terminal 9, and the upper and lower spring pieces 18 and 19 are simultaneously and uniformly forced. The male terminal 9 is elastically contacted.

  When the male terminal 9 is inserted, first, the pair of upper and lower spring pieces 18 and 19 on the front side are in contact with the male terminal 9 (sliding contact), and then the pair of middle upper and lower spring pieces 18 and 19 are in contact with the male terminal 9 (sliding contact). Finally, the pair of upper and lower spring pieces 18 and 19 on the rear side come into contact (sliding contact) with the male terminal 9. As described above, when the upper and lower spring pieces 18 and 19 come into contact with the male terminal 9 with a time difference, the insertion force of the male terminal 9 with respect to the spring member 4 sequentially increases, and the insertion property of the male terminal 2 is small. Is done smoothly.

  This is the same when the male terminal 9 is removed from the spring member 4. First, a pair of upper and lower spring pieces 18, 19 are separated from the male terminal 9 (a pair of upper and lower springs between the front and the middle). The pair of upper and lower spring pieces 18 and 19 are separated from the male terminal 9 (the pair of upper and lower spring pieces 18 and 19 on the front side are in contact with the male terminal 9). Finally, the pair of upper and lower spring pieces 18 and 19 on the front side are separated from the male terminal 9. As described above, the upper and lower spring pieces 18 and 19 are separated from the male terminal 9 with a time difference, so that the insertion / extraction force of the male terminal 9 with respect to the spring member 4 is sequentially reduced, and the insertion / extraction of the male terminal 9 is performed with a small force. Performed smoothly.

  As shown in FIG. 3, even when the plate thickness T of the male terminal 9 is thin, the upper and lower spring pieces 18 and 19 are elastically restored inward and come into contact with the male terminal 9. The male terminal 9 is automatically centered (centripetal) by the upper and lower spring pieces 18, 19, and is half the distance (gap) between the upper and lower substrate parts 15, 16 in parallel with the upper and lower substrate parts 15, 16. Located at the height of FIG. 3 is shown reversed from FIG.

  In terms of design dimensions, the distance between the upper and lower protrusions 10 of the terminal body 3 is A, the thickness of the male terminal 9 is T, the minimum allowable displacement of the upper and lower spring pieces 18 and 19 is 2B, and the upper and lower spring pieces 18 are. , 19 is 2C, T + 2B <A <T + 2C. The projecting height of the projecting portion 10 is defined so as to satisfy such a relationship.

  The male terminal 9 of this example is connected to an electric wire (not shown). However, even when an external force acts on the electric wire or the like and the male terminal 9 moves unnecessarily up and down, the upper and lower spring pieces. 18 and 19 are always in contact with the male terminal 9, and the number of contact points with the male terminal 9 is not reduced. Even when the male terminal 9 is greatly moved up and down, the upper and lower protrusions 10 abut against the male terminal 9 to restrict the position of the male terminal 9 and prevent further movement of the male terminal 9. , 19 can be prevented from harmful plastic deformation (sagging) and breakage of the spring pieces 18, 19 while maintaining the contact load at or above the design value.

  As shown in FIG. 5, the upper and lower spring pieces 18, 19 protrude in a substantially trapezoidal shape when viewed from the front, facing inward at the center in the width direction of the upper and lower substrate portions 15, 16. The outer surfaces of the left and right connecting plate portions 17 of the spring member 4 are in contact with the inner surfaces of the left and right side walls 7 of the terminal body 3. In FIG. 5, reference numeral 23 denotes an inclined protruding piece at the left and right ends, and reference numeral 2 denotes a bus bar.

  6 (a) and 6 (b) show a front view and a side view of the spring member 4, respectively, and the inwardly protruding portions 18a and 19a of the upper and lower spring pieces 18 and 19 are outwardly protruding portions 18c. , 19c and slightly narrower than the projecting tips 18b and 19b. The outward projecting portions 18c and 19c are connected to the respective board portions 15 and 16 by a taper-shaped (fan-shaped) hinge wall 25, and the spring pieces 18 and 19 elastically use the hinge wall 25 as a fulcrum when the male terminal 9 is inserted. It can be turned up and down.

  The upper and lower inclined substantially semicircular protruding pieces 23 of the side opening 22 between the front and rear connecting plate portions 17 protrude lower than the outwardly protruding portions 18c and 19c of the spring pieces 18 and 19, and the spring pieces 18 and 19 It is possible to contact the upper and lower walls 5 and 6 of the terminal body 3 alone or together with the outwardly projecting portions 18c and 19c at the time of the maximum rotation. Reference numeral 24 denotes a portion in which the cut end 15 a of the upper substrate portion 5 is locked to the flange portion 17 a at the upper end of the connecting plate portion 17.

  The engaging piece 20 of this example is disposed at a position slightly lower than the center in the height direction of each connecting plate portion 17. The horizontal upper and lower slits 26 of the connecting plate portion 17 are inserted deeper than the thickness of the engaging piece 20 to give elastic force in the plate thickness direction to the engaging piece 20 and connect to the outer surface 20a of the engaging piece 20. The front and rear ends 17a of the plate portion 17 are positioned on the same vertical plane. The engagement piece 20 protrudes in a rectangular shape with the same length as the inward protruding portions 18a and 19a of the spring pieces 18 and 19. The front end of the front connection plate portion 17 is located at the front ends of the upper and lower substrate portions 15 and 16, and the rear end of the rear connection plate portion 17 is located at the rear ends of the upper and lower substrate portions 15 and 16.

  As shown in FIG. 7, by inserting the male terminal 9, the upper and lower spring pieces 18, 19 rotate in the male terminal plate thickness direction with the hinge wall 25 as a fulcrum (the inwardly protruding portions 18a, 19a are directed outward). 6 and the outward projecting portions 18c and 19c rotate inwardly), the inclination angle θ of each spring piece 18 and 19 becomes gentler than in the free state of FIG.

  Since the upper and lower substrate portions 15 and 16, that is, the connecting portions for horizontally connecting the upper and lower spring pieces 18 and 19 are vertically connected by the pair of front and rear connection plate portions 17, the substrate portion is inserted when the male terminal 9 is inserted. 15 and 16 are not deformed, the escape of the load accompanying the deformation and the variation of the contact load for each spring piece with respect to the male terminal 9 are prevented, and the reliability of the electrical connection is increased.

  In addition, the engagement piece 20 is provided in the connecting plate portion 17, the engagement piece 20 is engaged with the locking hole 11 of the terminal body 3, and the position holding portion with respect to the terminal body 3 is not deformed. By being reliably performed on the outer surface 20a, the spring member 4 is stably and firmly held with respect to the terminal body 3 when the male terminal 9 is inserted and removed.

  For example, as shown in the reference example of FIG. 8, when a plurality of spring pieces 28 are formed on a single board portion 27 and the front and rear sides of the board portion 27 are bent to form a locking portion 29 for the terminal body 3 ′, the male terminal The board portion 27 is deformed obliquely when 9 is inserted, the load escapes to the board portion 27, the contact load for each spring piece varies greatly, and the locking portion 29, which is a position holding position for the terminal body 3 ', is provided. It becomes point contact and the reliability of the position holding of the spring member 30 at the time of insertion / extraction of the male terminal 9 will fall. These problems are solved by the spring member 4 of FIGS.

  In the above embodiment, the terminal body 3 is provided with the locking hole (locking portion) 11, and the spring member 4 is provided with the engagement piece (engagement portion) 20. It is also possible to provide an engagement hole (engagement part) in the spring member 4. However, in this case, there is a concern that the locking piece protrudes inward and interferes with the male terminal 9, or that the engagement between the engagement hole and the locking piece cannot be visually confirmed from the outside.

  In the above embodiment, the female terminal 1 is formed on the bus bar 2 and the male terminal 9 is connected (crimped) to the electric wire. For example, the male and female terminals 1 and 9 are connected to the electric wire, or the bus bar 2 It is also possible to integrally form them.

  The female terminal according to the present invention can be used for reliably connecting a high voltage circuit such as an electric vehicle including a hybrid car with a small electric resistance.

DESCRIPTION OF SYMBOLS 1 Female terminal 3 Terminal main body 4 Spring member 9 Male terminal 10 Protrusion part 11 Locking hole (locking part)
15, 16 Substrate part 18, 19 Contact spring piece 17 Connection plate part 20 Engagement piece (engagement part)

Claims (7)

A female terminal composed of a conductive rectangular cylindrical terminal body and a conductive spring member assembled in the terminal body, the spring member being cut into two upper and lower opposing substrate portions. A plurality of opposed contact spring pieces formed in a raised state, left and right connecting plate portions that connect the upper and lower substrate portions, and an engagement that is provided on the connecting plate portion and engages with a locking portion of the terminal body And a female terminal. The plurality of pairs of contact spring pieces include an outward portion protruding outward from the upper and lower substrate portions and an inward portion protruding inward from the upper and lower substrate portions, and the outward portion is the terminal body. The female terminal according to claim 1, wherein the female terminal is in elastic contact with the inner surface of the spring member, and the inward portion is in elastic contact with a male terminal inserted inside the spring member. 3. The female terminal according to claim 1, wherein a pair of the connecting plate portions are disposed before and after the substrate portion. 4. The female according to any one of claims 1 to 3 , wherein the engaging portion is an engaging piece projecting outward from the connecting plate portion, and the locking portion is a locking hole. Terminal. 5. The female terminal according to claim 4 , wherein the engagement pieces are provided at front and rear ends of each pair of connecting plate portions according to claim 3 , and each pair of engagement pieces engages with each locking hole. . Female terminal according to any one of claims 1 to 5, characterized in that the contact spring piece of the plurality of pairs are juxtaposed in the insertion direction of the male terminal. The front and rear ends of the terminal body, according to claim 1 in which the upper and lower protrusions is provided to permit insertion of the male terminal, wherein the upper and lower contact spring piece is characterized in that inwardly projecting than collision portion under the upper female terminal according to any one of 1-6.

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