JP4255966B2 - connector - Google Patents

Description

  The present invention relates to a connector with a high terminal metal fitting preventing property, and is suitable for a high voltage relay connector used for connecting a light source lamp such as a liquid crystal projector to a power source side.

As the connector structure for electrical connection, as shown in FIG. 10A, an elastic locking piece 152 (lance) is formed by cutting out the terminal fitting 150 of the connector 130 and provided in the terminal receiving hole 133. A technique is known in which the elastic locking piece 152 is locked to the stop step portion 134 and the terminal fitting 150 is mounted in the terminal storage hole 133.
However, as shown in FIG. 10B, the elastic locking piece 152 is plastically deformed until it loses its elasticity, or the terminal fitting 150 is not sufficiently inserted as shown in FIG. If the locking piece 152 becomes unengaged or the elastic locking piece 152 is deformed by an external force as shown in FIG. 10D, the terminal fitting 150 is attached when the connector is fitted as shown in FIG. There was a risk that the contact of the mating connector 140 with the terminal fitting 160 would be insufficient.
In particular, in a connector used for a light source lamp such as a liquid crystal projector, a high voltage of several kV is applied.
Japanese Utility Model Laid-Open No. 01-155684 discloses a waterproof connector having a double locking structure including a rubber stopper and a stopper member that prevents the rubber stopper from coming off in addition to the primary locking portion.
However, the stopper member is intended to prevent the rubber plug for waterproofing from coming off, and does not directly double-lock the terminal fitting, and the structure is complicated.

Japanese Utility Model Publication No. 01-155684

In view of the above technical problem, an object of the present invention is to provide a connector in which a terminal fitting can be securely attached to a housing, the terminal fitting has a high pulling strength, and has good assembly workability.
Another object of the present invention is to provide a relay connector that effectively prevents poor contact.

Connector for high voltage according to claim 1, wherein is provided with a housing and a terminal fitting and the locking piece, wherein the housing is perforated to form the cylindrical shape portion so as to surround the side surface of the terminal fitting to the fitting connection side together, have a through-terminal accommodating hole so as to pass through the axial center of the cylindrical shape portion, said terminal accommodating hole has an engaging step portion and the pawl engaging portion and the guide piece holding groove, said terminal fittings It has a contact portion on the distal end side, and the elastic locking pieces projecting toward the rear end side from the side of the terminal fitting with the rear end is attached to the wire for the electrical connection, the guide along the insertion direction and a single, the locking piece and the base portion formed in a semi-cylindrical, having a locking pawl which has a terminal retaining portion protruding from the base portion in the insertion direction, the terminal fitting from the front end side and inserted into the terminal accommodating hole of the housing of the terminal fitting Sex locking piece while engaging the engaging stepped portion provided on the terminal accommodating hole, the guide piece of the terminal fitting inserted into the guide piece holding groove provided in the terminal accommodating hole, the terminal retaining of the locking piece part of the engaged with the claw engaging portion of the locking claw of the locking piece is inserted into the terminal accommodating hole of the housing is provided in the terminal accommodating hole along the outer periphery of the terminal fitting, the terminal retaining of the locking piece The portion prevents the guide piece of the terminal fitting from coming off from the guide piece holding groove provided in the terminal housing hole .
As a result, the terminal fitting with the wire attached to the rear end side is double-locked with the locking by the elastic locking piece provided on the terminal fitting and the locking by the lock piece with respect to the housing.
The terminal receiving hole of the housing has a guide piece holding groove, the terminal fitting has a guide piece, and the terminal fitting is inserted into the terminal receiving hole of the housing from the distal end side to make the elastic locking piece into the engaging stepped portion. The guide piece is inserted and held in the guide piece holding groove, the terminal retaining portion of the lock piece is inserted into the terminal receiving hole of the housing along the outer periphery of the terminal fitting, and the engaging claw is engaged with the claw engaging portion. The terminal retaining portion prevents the guide piece from coming out of the guide piece holding groove.
Here, the lock piece has a semi-cylindrical base part, and the terminal retaining part protrudes from the base part in the insertion direction so as to close the groove opening of the guide piece holding groove. After inserting and assembling the terminal fitting with the wire inserted into the terminal receiving hole of the housing, the base part of the lock piece is simply inserted into the terminal receiving hole so that the semi-cylindrical recess is along the wire. The terminal retaining portion provided so as to project from the insertion direction side can effectively prevent the terminal fitting from coming off, and the assemblability is good.

  According to a second aspect of the present invention, a high-voltage relay connector includes a pair of the connectors according to the first aspect, wherein one is a plug connector and the other is a socket connector.

A relay connector for high voltage according to claim 3, wherein is suitable for high voltage, the socket connector has a cylindrical partition wall as cylindrical shaped portion formed in the mating connection side of the housing, of the cylindrical partition wall A terminal housing hole of the socket connector is provided through the side , and the plug connector forms an inner tube portion and an outer tube portion as a cylindrical shape portion formed on the fitting connection side of the housing, and the inner tube portion and have a tubular recessed portion between the outer cylindrical portion, is provided with a terminal accommodating hole of the plug connector through the inside of the inner cylindrical portion,
A cylindrical partition wall of the socket connector is fitted into the cylindrical recess provided between an inner cylinder portion and an outer cylinder portion of the plug connector .

In the connector according to the present invention, in addition to the elastic locking piece of the terminal fitting, a lock piece for preventing the terminal fitting from being detached from the housing is provided. The lock piece effectively prevents the terminal fitting from coming off even if the prevention force is reduced.
In addition, when the insertion depth of the terminal fitting is insufficient and the elastic locking piece does not engage with the locking stepped portion of the terminal storage hole, the terminal retaining portion of the lock piece is inserted into the terminal fitting by inserting the lock piece. Can be inserted and completely inserted, so that it is possible to prevent poor assembly of the terminal fitting to the housing.
And since the lock | rock of the removal direction of a terminal metal fitting is performed also in a lock piece in addition to an elastic locking piece, the removal strength of a terminal metal fitting is high.
When the base portion of the lock piece is formed into a semi-cylindrical shape, it is not necessary to pass through the wire in advance, and workability is good because the lock piece can be attached after the terminal fitting is assembled to the housing.
In addition, the lock piece can be inserted by inserting it from the terminal fitting insertion port of the housing provided for attaching the terminal fitting, and there is no need to provide a separate mounting hole. Suitable for high-voltage relay connectors that require creepage distances.

An external perspective view of an embodiment in which the connector according to the present invention is applied to the plug connector 30 is shown in FIG.
FIG. 7A shows an external perspective view of an embodiment of the socket connector 40 that can be fitted to the plug connector 30 and constitutes a relay connector together with the plug connector 30.
2C is a cross-sectional view of the main part of the plug connector 30 shown in FIG. 2A, in which one pole side is cut in the horizontal direction, and FIG. 2B is an external view seen from the terminal insertion port 33a side. Indicates.
FIG. 7B is a cross-sectional view of the main part of one side of the socket connector 30 shown in FIG. 7A cut in the horizontal direction, and FIG. 7C is an external view seen from the terminal insertion port 43a side. Indicates.
2 and 7 illustrate a state before the lock piece 20 and 20a are mounted on one pole side of the two poles of the connector and the lock piece is not mounted on the other pole side. .
2B and 7C, the wires 1 and 2 and the terminal fittings 50 and 60 are not shown.
The plug connector 30 and the socket connector 40 have terminal fittings 50 and 60 and lock pieces 20 and 20a mounted on housings 31 and 41, respectively.
3 and 8 are external perspective views of the lock piece.
The housing 41 of the socket connector 40 shown in FIG. 7 is provided with a cylindrical partition wall 42 and a terminal accommodating hole 43 that penetrates the housing 41 through the cylindrical partition wall 42.
The housing 31 of the plug connector 30 shown in FIG. 2 is provided with a cylindrical recess 32 into which the cylindrical partition wall 42 of the socket connector 40 shown in FIG. 7 can be fitted, and the plug 31 passes through the axial center of the cylindrical recess 32. A terminal housing hole 33 penetrating the connector housing 31 is formed.
The cylindrical recessed part 32 is formed between the outer cylinder part 32a and the inner cylinder part 32b which protruded concentrically from the plug connector housing 31 in the connector fitting direction.
The outer cylinder portion 32 a is projected to the tip position of the plug terminal fitting 50 so as to surround the side surface of the plug terminal fitting 50.
A fitting connection structure between the plug connector 30 and the socket connector 40 will be described later.
2 and 7 show a two-pole connector embodiment, but the number of poles of the connector is not limited, and may be one pole or three poles, for example.

First, the structure of the plug connector 30 will be described with reference to FIG. 2 and the explanatory view of FIG.
1A shows a state before the plug terminal fitting 50 is inserted into the terminal accommodating hole 33, and FIG. 1B shows a state where the plug terminal fitting 50 is mounted in the terminal accommodating hole 33. FIG. c) shows a state in which the lock piece 20 is mounted on the rear side of the plug terminal fitting 50 in the terminal accommodating hole 33, and a longitudinal section of each connector is drawn.
The plug terminal fitting 50 has a pin-shaped contact portion 53 formed on the distal end side, a guide piece (stabilizer) 52, an elastic locking piece (lance) 51, and a wire attachment portion 54 for attaching a wire terminal.
The end of the wire 1 is caulked and attached to the wire attaching portion 54 of the plug terminal 50.
The guide piece 52 is formed by bending and projecting a part of the metal plate forming the plug terminal fitting 50 so as to be parallel to the insertion direction from the left and right sides facing the insertion direction of the plug terminal fitting 50.
The elastic locking pieces 51 are cut out from the metal plate forming the plug terminal fitting 50 by opening the rear side in the terminal insertion direction so as to protrude from the terminal fitting side portion toward the rear end side.
The terminal storage hole 33 is opened at the terminal insertion port 33a on the opposite side of the connector fitting direction, and a locking step 34, a guide piece guide groove 37, and a guide piece holding groove 36 are formed in the terminal storage hole 33. is there.
The locking step 34 is provided with a step 34a and a recess 34b, and a locking step surface 34c is provided between the step 34a and the recess 34b.
The plug terminal fitting 50 is inserted into the terminal housing hole 33, and its elastic locking piece 51 is bent by the step 34a, elastically restored by the recess 34b, and the tip of the elastic locking piece 51 that has been elastically restored is engaged with the locking step surface. It is latched by 34 c and is installed in the terminal accommodating hole 33.
The guide piece holding groove 36 is provided with a groove on the inner peripheral wall of the terminal accommodating hole 33 so that the guide piece 52 of the plug terminal fitting 50 is fitted and the plug terminal fitting 50 is in a predetermined position.
As shown in FIG. 3, the lock piece 20 is provided with a retaining portion 22, a locking claw 24, and a stopper portion 25 on a semi-cylindrical base portion 21.
1B, when the wire 1 is attached to the wire attaching portion 54 and the plug terminal fitting 50 is attached in the terminal accommodating hole 33 as shown in FIG. 1B, the inner peripheral surface 33b of the terminal accommodating hole 33 and the wire 1 is formed in a semi-cylindrical shape in accordance with the mounting space 33c formed between the two.
The locking claw 24 is projected on a spring piece 26 formed by providing a notch 21 a in the base portion 21 in a mountain shape with a cross-section cut away from the insertion direction.
As shown in FIG. 1C, the lock piece 20 is inserted into the mounting space 33 c of the terminal storage hole 33, and the locking claw 24 is engaged with the claw locking portion 38 a provided by denting the inner periphery of the terminal storage hole 33. The spring piece 26 is bent and snap-locked, and the spring piece 26 is installed in the terminal accommodating hole 33.
Since the lock piece 20 does not need to be passed through the wire 1 in advance, it can be attached after the plug terminal fitting 50 is mounted in the terminal housing hole 33.
The lock piece 20 is inserted into the terminal storage hole 33 by guiding the locking claw 24 with the claw guide grooves 38b and 38c shown in FIG.
When the lock piece 20 is installed in the terminal receiving hole 33, the groove on the guide piece insertion side of the guide piece holding groove 36 is closed with the retaining surface 22 a shown in FIG. The fitted guide piece 52 is prevented from coming off from the guide piece holding groove 36.
Further, as shown in FIG. 1D, when the insertion depth of the plug terminal fitting 50 into the terminal housing hole 33 is insufficient and the guide piece 52 is not fully within the guide piece holding groove 36, The rear end of the guide piece 52 is pushed by the terminal retaining portion 22 and pushed into the guide piece holding groove 36 so that the plug terminal position can be corrected to the complete insertion position.
The prevention of the plug terminal fitting 50 and the position correction structure using this lock piece will be described later.
As shown in FIGS. 1C and 2, when the lock piece 20 is mounted in the terminal accommodating hole 33, the stopper portion 25 of the lock piece 20 is a stopper receiver formed at the edge of the terminal insertion port 33 a of the housing 31. It fits against the recess 39.
As shown in FIG. 2 (b), a misassembly prevention rib 35 for preventing the lock piece from being inserted into a position other than the predetermined insertion position protrudes toward the terminal insertion port 33a at the edge of the terminal insertion port 33a. It is provided.
The material of the lock piece 20 is not limited as long as it has predetermined elasticity and moisture resistance. For example, nylon, polybutylene terephthalate, polyphenylene sulfide, and the like are conceivable.
Further, the lock piece 20 may be made to be easily visually confirmed that the lock piece 20 is mounted in the terminal receiving hole 33 by making the color different from that of the housing 31. For example, the lock piece 20 is formed of a resin having transparency, May be formed of a colored resin having a different color from the housing.

Next, with reference to FIG. 4, the plug terminal metal fitting retaining and position correcting structure by the lock piece will be described.
FIG. 4 corresponds to each assembly state of the explanatory diagram of the assembly procedure shown in FIG. 1, and is an explanatory diagram in which a part of the plug terminal fitting 50, the wire 1 and the like are omitted for easy understanding. A longitudinal sectional view is shown on the left side, and a horizontal sectional view is shown on the right side.
4A shows a state before the plug terminal fitting 50 is inserted into the terminal accommodating hole 33, and FIG. 4B shows a state where the plug terminal fitting 50 is mounted in the terminal accommodating hole 33. FIG. FIG. 4C shows a state in which the lock piece 20 is mounted on the rear side of the plug terminal fitting 50 in the terminal receiving hole 33. FIG. 4D shows that the plug piece 50 is not sufficiently inserted into the terminal receiving hole 33, and the lock piece 20 is locked. A state where the rear portion of the guide piece 52 is pushed in by the 20 terminal retaining portions 22 is shown.
The plug terminal fitting 50 is inserted from the terminal insertion port 33a as shown in FIG. 4A, and the guide piece 52 is fitted into the guide piece holding groove 36 as shown in FIG. Is locked to the locking step surface 34 c and is mounted at a predetermined position in the terminal accommodating hole 33.
The lock piece 20 snaps the locking claw 24 to the claw locking portion 38a and is mounted in the terminal accommodating hole 33 as shown in FIG.
When the lock piece 20 is installed in the terminal storage hole 33, the terminal retaining portion 22 of the lock piece 20 is fitted into the guide piece guide groove 37, and the groove opening of the guide piece holding groove 36 is closed by the retaining surface 22a of the terminal retaining portion 22, and the stopper The portion 25 fits against the stopper receiving recess 39.
When the lock piece 20 is not sufficiently inserted into the terminal storage hole 33 and the lock piece is not completely mounted, a gap is formed between the stopper portion 25 and the stopper receiving recess 39. It can be easily judged visually whether this gap has occurred.
The stopper portion 25 is fitted in the stopper receiving recess 39 to position the lock piece 20 in the circumferential direction and fix the rotation.
The lock piece 20 is mounted in the terminal receiving hole 33, and the guide piece 52 is moved from the guide piece holding groove 36 by the retaining surface 22a by closing the groove of the guide piece holding groove 36 by the retaining surface 22a of the terminal retaining portion 22. The plug terminal fitting 50 is secured by being regulated.
The position where the retaining surface 22a restricts the movement of the guide piece 52 in the removal direction is such that the plug terminal fitting 50 receives a force in the removal direction and the tip of the elastic locking piece 51 hits the locking step surface 34c. It is formed at a position where the guide piece 52 comes into contact with 22a almost simultaneously.
As a result, the load in the pulling direction applied to the plug terminal fitting 50 is distributed and received by the elastic locking pieces 51 and the guide pieces 52, thereby increasing the pulling strength of the plug terminal fitting 50.
Since the terminal retaining portion 22 is inserted from the rear of the insertion path of the guide piece 52 toward the guide piece holding groove 36, the insertion of the plug terminal fitting 50 into the terminal accommodation hole 33 is performed as shown in FIG. When the depth is insufficient and the guide piece 52 does not fully enter the guide piece holding groove 36, the guide piece 52 can be pushed in.
When the guide piece 52 is pushed into the guide piece holding groove 36 until the lock piece 20 reaches the mounting position on the retaining surface 22a of the terminal retaining portion 22, the tip position of the elastic locking piece 51 is locked to the step locking surface 34c. The elastic locking piece 51 is elastically restored and locked to the locking step surface 34c, so that the plug terminal fitting 50 can be corrected to the complete insertion position and mounted.
When the lock piece 20 is mounted, the plug terminal fitting 50 can be fixed at a predetermined position and given sufficient pulling strength, so that the elastic locking piece 51 has a locking step as shown in FIG. Even when it is plastically deformed until it is not locked to the surface 34c, or even when the elastic locking piece 51 is deformed so as not to be locked to the locking step surface 34c as shown in FIG. 5B. Then, the plug terminal fitting 50 can be secured and fixed at a predetermined position to prevent terminal contact failure.

Next, the structure of the socket connector 40 will be described with reference to FIGS.
6A shows a state before the socket terminal fitting 60 is inserted into the terminal receiving hole 43, and FIG. 6B shows a state in which the socket terminal fitting 60 is mounted in the terminal receiving hole 43. FIG. c) shows a state in which the lock piece 20a is mounted on the rear side of the socket terminal fitting 60 in the terminal accommodating hole 43.
The socket terminal fitting 60 has a cylindrical contact portion 63 formed on the front end side, a guide piece (stabilizer) 62, an elastic locking piece (lance) 61, and a wire attachment portion 64 for attaching a wire terminal on the rear end side. is doing.
The end of the wire 2 is caulked and attached to the wire attachment portion 64 of the socket terminal fitting 60.
The terminal receiving hole 43 is opened at a terminal insertion opening 43a on the opposite side of the connector fitting direction, and a locking step 44, a guide piece guide groove 47, and a guide piece holding groove 46 are formed in the terminal receiving hole 43. is there.
The locking step 44 has a step 44a and a recess 44b, and a locking step surface 44c is provided between the step 44a and the recess 44b.
The socket terminal metal fitting 60 inserted into the terminal accommodating hole 43 is bent at its step 44a and elastically returned at the recess 44b to be elastically restored at the recess 44b. To be fixed in the terminal receiving hole.
The guide piece holding groove 46 is formed by fitting the guide piece 62 of the socket terminal fitting 60 inserted into the terminal accommodation hole 43 and denting the inner peripheral wall of the terminal accommodation hole 43 so that the socket terminal fitting 60 is in a predetermined position. .
As shown in an external perspective view in FIG. 8, the lock piece 20 a has a terminal portion 23, a locking claw 24, and a stopper portion 25 provided on a semi-cylindrical base portion 21.
The lock piece 20a may be a common part with the lock piece 20 used in the plug connector, or may be a separate part having a shape matched to the connector.
The structure for attaching the lock piece 20a to the terminal receiving hole 43 in the socket connector 40, and the structure for preventing the socket terminal fitting 60 from being removed and for correcting the position are the structure for attaching the lock piece 20 of the plug connector 30 to the terminal receiving hole 33 and the plug terminal. The description is omitted because it is common to the retaining and position correcting structure of the metal fitting 50.

FIG. 9 is an explanatory view of the fitting connection structure of the high-voltage relay connector 10 including the plug connector 30 shown in FIG. 2 and the socket connector 40 shown in FIG.
FIG. 9A shows a longitudinal sectional view before fitting the relay connector 10, FIG. 9B shows a sectional view on one side, FIG. 9C shows a longitudinal sectional view after fitting, and FIG. Is shown in FIG.
In the plug connector 30 and the socket connector 40, the cylindrical partition wall 42 of the socket connector 40 is fitted in the cylindrical recess 32 of the plug connector 30, and the pin-shaped contact portion 53 of the plug terminal metal 50 is connected to the cylindrical shape of the socket terminal metal 60. The contact portion 63 is fitted and connected.
The relay connector 10 has a socket connector housing in a cylindrical recess 32 provided between the outer cylinder portion 32a and the inner cylinder portion 32b of the plug connector housing 31 with the connection portion between the plug terminal fitting 50 and the socket terminal fitting 60 as a center. In order to fit the cylindrical partition wall 42 provided in 41, the fitting depth between the cylindrical partition wall 42 and the cylindrical recess 32 is set appropriately, so that the connection portion between the terminal fittings and the outside of the relay connector or adjacent poles A sufficient creepage distance as a high-voltage relay connector can be easily provided between the connection portion and the connection portion.
In the plug connector 30 and the socket connector 40, the terminal fittings 50 and 60 are secured to the locking pieces 20 and 20a.
This lock piece is a terminal that is provided to insert the terminal fitting without separately providing a mounting hole in the housing, which has an influence on securing a creepage distance from the connection portion of the terminal fitting. Since it is structured to be inserted and inserted from the insertion ports 33a and 43a, it is easy to ensure the creepage distance necessary for the high voltage relay connector. The example shown in FIG. 9 has a withstand voltage of 9 KV and is easily over 5 KV. Can withstand the withstand voltage.

The explanatory view of the assembly procedure of the plug connector concerning the present invention is shown. (A) shows the external appearance perspective view of the plug connector regarding this invention, (b) shows the external view seen from the terminal insertion port side, (c) shows one side sectional drawing. The external appearance perspective view of a lock piece is shown. An explanatory view of the terminal fitting removal and position correction structure by the lock piece is shown. The explanatory view of the state where the plug terminal metal fitting which has a damaged elastic locking piece was stopped and fixed with the lock piece is shown. The explanatory view of the assembly procedure of the socket connector concerning the present invention is shown. (A) shows the external appearance perspective view of the socket connector regarding this invention, (b) shows the external view seen from the terminal insertion port side, (c) shows one side sectional drawing. The external appearance perspective view of a lock piece is shown. The explanatory view of the fitting connection structure of the relay connector for high voltage provided with the plug connector and socket connector concerning the present invention is shown. The Example of the conventional connector is shown.

Explanation of symbols

1, 2 Wire 10 High voltage relay connector 20, 20a Lock piece 21 Base portion 21a Notch 22, 23 Terminal retaining portion 22a Stopping surface 24 Locking claw 25 Stopper portion 26 Spring piece 30 Plug connector 31 Plug connector housing 32 Cylindrical recess 32a Outer cylinder part 32b Inner cylinder part 33 Terminal storage hole 33a Terminal insertion port 33b Terminal storage hole inner peripheral surface 33c Mounting space 34 Locking step part 34a Step part 34b Recess 34c Locking step surface 35 Misassembly prevention rib 36 Guide Piece holding groove 37 Guide piece guide groove 37a Guide piece guide slope 38a Claw locking portion 38b, 38c Claw guide groove 39 Stopper receiving recess 40 Socket connector 41 Socket connector housing 42 Tubular partition wall 43 Terminal storage hole 43a Terminal insertion port 43b Terminal storage Hole inner peripheral surface 43c Mounting space 44 Locking step 44a Step 4b Recess 44c Locking step surface 45 Misassembly prevention rib 46 Guide piece holding groove 47 Guide piece guide groove 47a Guide piece guide slope 48a Claw locking portion 48b, 48c Claw guide groove 49 Stopper receiving recess 50 Plug terminal fitting 51 Elastic engagement Stopper (Lance)
52 Guide piece (stabilizer)
53 Contact portion 54 Wire attachment portion 60 Socket terminal fitting 61 Elastic locking piece (lance)
62 Guide piece (stabilizer)
63 Contact part 64 Wire attachment part

Claims (3)

It has a housing, terminal fittings and a lock piece,
The housing as well as have a form the cylindrical shape portion so as to surround the side surface of the terminal fitting to the fitting connection side, it has a through-pin accommodating hole so as to pass through the axial center of the cylindrical shape portion,
The terminal storage hole has a locking step portion, a claw locking portion, and a guide piece holding groove,
The terminal fitting has a contact portion on the distal end side, and the elastic locking pieces projecting toward the rear end side from the side of the terminal fitting with the rear end is attached to the wire for the electrical connection, the insertion direction And a guide piece along
The lock piece has a base portion formed in a semi-cylindrical shape, a terminal retaining portion protruding from the base portion toward the insertion direction, and a locking claw,
With locking to the locking step portion of the resilient locking pieces provided on the terminal accommodating hole of the insert and the terminal fittings into the terminal accommodating hole of the housing the terminal fittings from the front end side, the guide piece of the terminal fitting Insert it into the guide piece holding groove provided in the terminal storage hole ,
Locking the terminal retaining portion of the lock piece to the nail locking part locking claw of the locking piece is inserted into the terminal accommodating hole of the housing is provided in the terminal accommodating hole along the outer periphery of the terminal fitting,
The high voltage connector according to claim 1, wherein the terminal removal preventing portion of the lock piece prevents the guide piece of the terminal fitting from coming off from the guide piece holding groove provided in the terminal accommodation hole .   A relay connector for high voltage, comprising a pair of the connectors according to claim 1, wherein one is a plug connector and the other is a socket connector. Socket connector has a cylindrical partition wall as cylindrical shaped portion formed in the mating connection side of the housing, is provided with a terminal accommodating hole of the socket connector extends through the inner side of the cylindrical partition wall,
Plug connector have a cylindrical recess between the inner tubular portion and forms an outer tubular portion and the inner cylindrical portion and the outer tubular section as cylindrical shaped portion formed in the mating connection side of the housing, within the A terminal housing hole of the plug connector is provided through the inside of the tube portion,
3. The relay for high voltage according to claim 2, wherein a cylindrical partition wall of the socket connector is fitted into the cylindrical recess provided between an inner cylinder portion and an outer cylinder portion of the plug connector. connector.

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