JP3531718B2 - Connection structure for high-voltage wires - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses, for example, a connection terminal for a high-voltage electric wire, which is crimped and fixed to the end portion of the high-voltage electric wire,
The present invention relates to a high-voltage electric wire connection structure for electrically connecting the high-voltage electric wire to a high-voltage terminal mounting portion of a device such as a distributor (distributor) of an internal combustion engine such as an automobile and an ignition coil (ignition coil).

[0002]

2. Description of the Related Art FIG. 7 shows a conventional example of a high-voltage electric wire connection structure for connecting a high-voltage electric wire 15 to a high-voltage tower portion 20 which is a high-voltage terminal mounting portion of equipment such as a distributor or an ignition coil. The high pressure tower section 2
In No. 0, a socket metal fitting 21 for mounting a high-voltage terminal, which has a bottomed cylindrical shape, is fitted as a terminal receiving portion inside a cylindrical portion 22 formed of an insulating resin or the like.

On the other hand, at the end of the high-voltage electric wire 15, the connection terminal 52 for the high-voltage electric wire bent into a substantially L shape to which the core wire of the high-voltage electric wire 15 is crimp-connected, and the periphery of the connection terminal 52 for the high-voltage electric wire are provided. An insulating cap 51 for covering is provided. The insulating cap 51 includes an insulating rubber grommet 10 that covers the periphery of the high-voltage electric wire connection terminal 52 so that a high-voltage current does not leak, and an outer periphery of the grommet 10 that corresponds to a bent portion of the high-voltage electric wire connection terminal 52. The holder 13 is fitted on the part.

The connection terminal 52 for the high voltage electric wire is, for example,
The rolled stainless steel strip is punched and then pressed to have a predetermined shape. The terminal fitting portion 53 has a substantially cylindrical shape and is fitted into the socket fitting 21.
And an electric wire crimping portion 58 for crimping and fixing the high-voltage electric wire 15. Then, as shown in FIG. 8, a pair of spring pieces 56, which are pressed into contact with the inner peripheral wall of the socket fitting 21, when fitted into the socket fitting 21, are inserted into the terminal fitting portion 53.
A protrusion 57 is formed so as to protrude.

The tip portion 12 of the grommet 10 covering the periphery of the base of the terminal fitting portion 53 is fitted into the tubular portion 22 of the high voltage tower portion 20, and the fitting portion between the socket fitting 21 and the terminal fitting portion 53. Is hermetically sealed. Also, the holder 1
The lock arm 13a formed at 3 is engaged with the jaw portion 22a of the tubular portion 22. As a result, the grommet 10 is pressed from above by the holder 13, and the terminal fitting portion 53 is held and fixed in the fitted state so as not to come off from the socket fitting 21. Therefore, in the above-described connection structure, the terminal fitting portion 53 of the connection terminal 52 for a high voltage electric wire is connected to the socket fitting 2
By pushing the inside of the grommet 10 into the tubular portion 22 of the high-voltage tower section 20 as shown in FIG. 9, the high-voltage electric wire 15 to the high-voltage tower section 20 is pushed.
The electrical connection of is completed.

If there is play between the terminals to which the high voltage electric wires are fitted and connected, contact between the terminals may become unstable and electrical connection may not be performed well. On the other hand, the connection part of the high-voltage wire is likely to be disconnected and re-connected during maintenance work.Therefore, consideration should be given to making it easy to assemble and disconnect the mating connection part between terminals. Becomes important.

Therefore, in the above-described high-voltage electric wire connection structure, as shown in FIGS. 8 and 9, the projections 57 of the pair of spring pieces 56 formed on the terminal fitting portion 53 are connected to the socket fitting 21.
By making pressure contact with the inner peripheral wall of the socket, secure electrical connection between the terminal fitting portion 53 and the socket fitting 21 is ensured while ensuring the detachability of the terminals. That is, the terminal fitting portion 5
3 and the socket metal fitting 21 are loosely fitted to prevent deterioration of insertability of the terminal fitting portion 53 into the socket metal fitting 21, and the outer diameter d ₃ of the portion where the spring piece 56 is formed is set to the socket metal fitting 21. The inner diameter D ₁ is set larger than the inner diameter D ₁ to absorb the play between the terminals by the elastic force of the spring piece 56.

[0008]

However, in the above-mentioned connection structure, since the electrical connection between the terminal fitting portion 53 and the socket fitting 21 is substantially made by the projection 57 of the spring piece 56, long-term use is possible. When the spring piece 56 gradually falls due to the vibration of the engine due to, the contact pressure of the protrusion 57 against the inner peripheral wall of the socket fitting 21 becomes weak. Therefore, the high-voltage electric wire connection terminal 52 slightly vibrates in the socket fitting 21 and wear occurs. This abrasion powder adheres to the contact portions of the terminals and causes a momentary discontinuity, which may cause radio noise or engine malfunction.

Further, if the protrusion 57 of the spring piece 56 is raised to increase the contact pressure against the inner peripheral wall of the socket fitting 21 in order to prevent vibration, the insertion resistance of the terminal fitting portion 53 increases and the high pressure tower portion 20 is prevented. The workability of attaching and detaching the insulating cap 51 is reduced. Therefore, an object of the present invention is to solve the above problems, and to provide a good high-voltage electric wire connection structure capable of performing a reliable electrical connection when fitting and connecting terminals to each other and without lowering the workability of attachment and detachment. It is to be.

[0010]

The above object of the present invention is to hold and fix a connection terminal for a high voltage electric wire fixed to the end portion of the high voltage electric wire and a high voltage terminal mounting portion provided on the equipment side in a fitted state. Thus, in the connection structure of the high-voltage electric wire for electrically connecting the high-voltage electric wire to the high-voltage terminal mounting portion, the terminal fitting portion formed on any one of the high-voltage electric wire connection terminal and the high-voltage terminal mounting portion, A tip contact portion that contacts the bottom surface of the other terminal receiving portion formed in a bottomed tubular shape, and the tip contact portion contacts the bottom surface and is urged toward the rear end side in the insertion direction.
This is achieved by the connection structure of the high-voltage electric wire, characterized in that it has a tubular body portion that is elastically deformed in the radial direction by the force in the compression direction.

According to the above construction, when the tubular body of the terminal fitting portion is inserted into the bottomed tubular shape of the terminal receiving portion, the tip contact portion of the terminal fitting portion contacts the bottom surface of the terminal receiving portion. Since the tubular body can be set so as to be loosely fitted in the terminal receiving portion, the insertion resistance of the terminal fitting portion can be reduced. Further, even after the tip abutting portion abuts the bottom surface of the terminal receiving portion, the terminal fitting portion is further pushed, and a force in the compression direction acts on the terminal fitting portion. Is elastically deformed in the radial direction and is pressed against the inner peripheral surface of the terminal receiving portion in a surface contact state. Therefore,
The tip abutting portion and the tubular body portion can make a reliable electrical connection to the terminal receiving portion.

[0012] Preferably, the tip contact portion and the cylinder
The body portion is integrally formed. Further, preferably, the tubular body portion of the terminal fitting portion has a spiral slit formed along the insertion direction rear end side from the front end abutting portion. In addition, preferably, the tubular body portion of the terminal fitting portion has a plurality of protruding pieces that extend along the insertion direction, are arranged at equal intervals in the circumferential direction, and are elastically deformable in the radial direction. Further, preferably, the tubular body portion of the terminal fitting portion has a protrusion protruding in the radial direction. Further, preferably, the tip abutting portion of the terminal fitting portion has a protrusion protruding in the insertion direction.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A connection structure for a high voltage electric wire according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The same members as those of the conventional high-voltage electric wire connection structure shown in FIGS. 7 to 9 are designated by the same reference numerals, and detailed description thereof will be omitted. 1 to 3 show a connection structure of a high-voltage electric wire according to a first embodiment of the present invention in which a high-voltage electric wire 15 is connected to a high-voltage tower portion 20 which is a high-voltage terminal mounting portion of equipment such as a distributor or an ignition coil. Is.

As shown in FIG. 1, at the end of the high-voltage electric wire 15, a connection terminal 2 for the high-voltage electric wire bent into a substantially L shape to which the core wire of the high-voltage electric wire 15 is crimped is connected, and the connection for the high-voltage electric wire. An insulating cap 1 that covers the periphery of the terminal 2 is provided. The insulating cap 1 includes an insulating rubber grommet 10 that covers the periphery of the high-voltage wire connection terminal 2 so that high-voltage current does not leak, and an outer periphery of the grommet 10 that corresponds to the bent portion of the high-voltage wire connection terminal 2. The holder 13 is fitted on the part.

As shown in FIG. 2, the high-voltage electric wire connection terminal 2 is formed into a predetermined shape by, for example, punching a rolled stainless steel strip and then pressing it, and is fitted into the socket fitting 21. A substantially cylindrical terminal fitting portion 3 and an electric wire crimping portion 8 for crimping and fixing the high-voltage electric wire 15
And have. Here, the electric wire crimping portion 8 is electrically connected to the core wire of the high voltage electric wire 15 by crimping the end portion of the high voltage electric wire 15 folded back on the outer coating of the core wire with a pair of crimping claws. It is a thing.

The terminal fitting portion 3 has a tip abutting portion 5 that abuts on the bottom surface 21a of the socket fitting 21 and a diametrical expansion direction when the tip abutting portion 5 is biased toward the rear end side in the insertion direction. An elastically deformable tubular body portion 3a is formed on the.
The tubular body portion 3a has a spiral slit 4 formed along the insertion direction rear end side from the tip abutting portion 5, and protrudes outward on the outer peripheral surface of the tubular body portion 3a. A plurality of protrusions 6 are formed. Further, a projection 7 protruding in the insertion direction is formed on the tip abutting portion 5 that is bent and formed into a substantially L shape. The cylindrical body 3a is formed by punching a long strip and winding it into a cylindrical shape at a predetermined interval to form a spiral slit 4. or,
The outer diameter d ₁ of the tubular body portion 3a is set smaller than the inner diameter D ₁ of the socket fitting 21, and the fitting tolerance of the terminal fitting portion 3 and the socket fitting 21 is loose.

Therefore, first, the terminal fitting portion 3 of the connection terminal 2 for the high-voltage electric wire, which is previously assembled in the insulating cap 1, is pushed into the socket fitting 21 of the high-voltage tower portion 20,
The tip contact portion 5 of the terminal fitting portion 3 is brought into contact with the bottom surface 21 a of the socket fitting 21. At this time, since the tubular body portion 3a of the terminal fitting portion 3 is set so as to be loosely fitted to the inner peripheral surface of the socket fitting 21, there is almost no insertion resistance of the terminal fitting portion 3.

Even after the tip abutting portion 5 abuts on the bottom surface 21a of the socket fitting 21, the lock arm 13a of the holder 13 engages with the jaw 22a of the tubular portion 22 so that the insulating cap 1 is properly fitted. To the combined position (position shown in Fig. 3),
When the terminal fitting portion 3 is further pushed, the tip contact portion 5
Is urged toward the rear end side in the insertion direction by the reaction force from the bottom surface 21a, and a force in the compression direction along the insertion direction acts on the terminal fitting portion 3. Then, the cylindrical body portion 3a has the slit 4
At the same time as the slit width of shrinks, it elastically deforms in the radial expansion direction,
The outer peripheral surface is pressed against the inner peripheral surface of the socket fitting 21 in a surface contact state.

At this time, the tip portion 12 of the grommet 10
Is fitted into the tubular portion 22 of the high pressure tower portion 20,
The grommet 10 is pressed from above by the holder 13, and the terminal fitting portion 3 is held and fixed in a fitted state so as not to come off from the socket fitting 21, so that as shown in FIG. The electrical connection of the high voltage electric wire 15 is completed.

Therefore, the terminal fitting portion 3 of the connection terminal 2 for the high voltage electric wire is fitted into the high voltage tower portion 20 against the repulsive force of the tubular body portion 3a even after the pushing force at the time of insertion is released. The combined state can be maintained, and reliable electrical connection can be made to the socket fitting 21. Furthermore, in the high-voltage electric wire connection terminal 2 of the present embodiment, a plurality of protrusions 6 protruding in the radial direction are provided on the outer peripheral surface of the tubular body portion 3a, and the protrusions 6 are inserted on the outer surface of the tip abutting portion 5. Since the protrusion 7 protruding in the direction is provided, the contact pressure of the terminal fitting portion 3 inserted to the regular fitting position with respect to the socket fitting 21 is increased, and vibration is reliably prevented.

That is, according to the connection structure of the high voltage electric wire in this embodiment, the terminal fitting portion 3 of the connection terminal 2 for the high voltage electric wire.
Because the entire outer peripheral surface of the tubular body portion 3a is in pressure contact with the inner peripheral surface of the socket fitting 21 in a surface contact state, the spring piece 56 of the conventional high-voltage wire connection terminal 52 shown in FIG. It is difficult for the contact pressure to drop. Further, the cylindrical body portion 3a is elastically deformed in the radial direction after the tip abutting portion 5 abuts on the bottom surface 21a of the socket fitting 21 and is further pushed in. There is almost no insertion resistance of the terminal fitting portion 3 which is set so as to be loosely fitted to the inner peripheral surface of the socket fitting 21 until it abuts on 21a, and the work of attaching the insulating cap 1 to the high voltage tower portion 20 is performed. There is no decrease in sex.

When the connection terminal 2 for the high voltage electric wire fitted in the socket fitting 21 of the high voltage tower section 20 is to be removed, the lock arm of the holder 13 engaged with the jaw 22a of the tubular section 22. 13a is removed, and the insulating cap 1 is pulled out upward. At this time, the tubular body portion 3a, which has been elastically deformed in the radial direction, contracts at the same time as the connection terminal 2 for a high-voltage electric wire is pulled upward, and loosely fits into the inner peripheral surface of the socket fitting 21. As a result, the terminal fitting portion 3 has almost no pull-out resistance.

It should be noted that the tubular body portion according to the connection structure of the high voltage electric wire of the present invention is not limited to the configuration of the tubular body portion 3a in the first embodiment, and the tip abutting portion is rearward in the insertion direction. Of course, various forms can be adopted as long as they can be elastically deformed in the radial direction by being urged toward the end side and exerting a force in the compression direction. 4 to 6 show a connection structure of a high-voltage electric wire according to a second embodiment of the present invention, in which the high-voltage electric wire 15 is connected to the high-voltage tower section 20, and the connection terminal for the high-voltage electric wire in the first embodiment. Since it has the same configuration except that the connection terminal 32 for a high-voltage electric wire is used in place of 2, the same components are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in FIG. 4, at the end of the high-voltage electric wire 15, the connection terminal 32 for the high-voltage electric wire bent into a substantially L shape to which the core wire of the high-voltage electric wire 15 is crimped is connected, and the connection for the high-voltage electric wire. An insulating cap 1 that covers the periphery of the terminal 32 is provided. As shown in FIG. 5, the connection terminal 32 for a high-voltage electric wire is formed into a predetermined shape by, for example, punching a rolled stainless steel strip and then pressing it, and is a substantially cylindrical shape fitted into the socket fitting 21. -Shaped terminal fitting portion 33 and electric wire crimping portion 38 for crimping and fixing the high-voltage electric wire 15
And have.

The terminal fitting portion 33 has a tip end abutting portion 35 that abuts on the bottom surface 21a of the socket fitting 21, and the tip end abutting portion 35 is urged toward the rear end side in the insertion direction to expand the diameter direction. An elastically deformable tubular body portion 33a is formed on the inner surface. The tubular body portion 33a has a plurality of overhanging pieces 34 extending in the insertion direction, arranged at equal intervals in the circumferential direction, and elastically deformable in the radial direction. The overhanging piece 34 is
A substantially middle portion is curved so as to project outward, and a plurality of protrusions 36 protruding outward are appropriately formed on the top portion thereof. Further, a projection 37 protruding in the insertion direction is formed on the tip abutting portion 35 that is bent at a substantially right angle.

In the tubular body portion 33a, a flat plate-like terminal fitting portion 33 is formed in a cylindrical shape, in which a notch having a predetermined width is preliminarily cut and a protruding piece 34 is curved so as to project outward.
It is composed. Also, the outer diameter d of the cylindrical body portion 33a
₂ is set to be smaller than the inner diameter D _{1 of the} socket fitting 21, and the fitting tolerance between the terminal fitting portion 3 and the socket fitting 21 is loose.

Therefore, first, the terminal fitting portion 33 of the connection terminal 32 for the high voltage electric wire, which is assembled in advance in the insulating cap 1,
Is pushed into the socket metal fitting 21 of the high-voltage tower portion 20, and the tip abutting portion 35 of the terminal fitting portion 33 is brought into contact with the bottom surface 21a of the socket metal fitting 21. At this time, since the tubular body portion 33a of the terminal fitting portion 33 is set so as to be loosely fitted to the inner peripheral surface of the socket fitting 21, there is almost no insertion resistance of the terminal fitting portion 33.

Even after the tip end abutting portion 35 abuts on the bottom surface 21a of the socket fitting 21, the lock arm 13a of the holder 13 engages with the jaw 22a of the tubular portion 22 for normal fitting. When the terminal fitting portion 33 is further pushed to the mating position (the position shown in FIG. 6), the tip abutting portion 35 is biased toward the rear end side in the insertion direction by the reaction force from the bottom surface 21a, and the terminal fitting portion 33 is pushed. A force in the compression direction along the insertion direction acts on. Then, the cylindrical body portion 33a
Is elastically deformed in the radial direction so that the middle portion of each overhanging piece 34 overhangs outward, and the outer peripheral surface thereof is pressed against the inner peripheral surface of the socket fitting 21 in a surface contact state.

At this time, the tip portion 12 of the grommet 10 is
Is fitted into the tubular portion 22 of the high pressure tower portion 20,
The grommet 10 is pressed down from above by the holder 13, and the terminal fitting portion 33 is held and fixed in the fitted state so as not to come off from the socket fitting 21.
As shown in, the electrical connection of the high voltage electric wire 15 to the high voltage tower section 20 is completed.

Therefore, the terminal fitting portion 33 of the connection terminal 32 for the high-voltage electric wire, even after the pushing force at the time of insertion is released,
The fitting state with respect to the high-pressure tower section 20 can be maintained against the repulsive force of the cylindrical body section 33a, and the socket fitting 21
A reliable electrical connection can be made to. Furthermore,
In the connection terminal 32 for a high voltage electric wire of the present embodiment, a plurality of protrusions 36 protruding in the radial direction are provided on the outer side surface of the projecting piece 34, and are protruded in the insertion direction on the outer side surface of the tip abutting portion 35. Since the protrusion 37 is provided, the terminal fitting portion 33, which is inserted to the regular fitting position, has the socket fitting 21.
The contact pressure with respect to is increased and vibration is reliably prevented.

Therefore, according to the connection structure of the high voltage electric wire in the second embodiment, the terminal fitting portion 33 of the connection terminal 32 for the high voltage electric wire is the socket metal fitting as in the connection structure of the high voltage electric wire in the first embodiment. The cylindrical body 3 is provided on the inner peripheral surface of 21.
Since the entire outer peripheral surface of 3a is in pressure contact in a surface contact state, the spring piece 5 such as the conventional connection terminal 52 for a high voltage electric wire shown in FIG.
It is difficult for the contact pressure to drop due to the settling of No. 6.

Further, the cylindrical body portion 33a is elastically deformed in the radial direction only when the tip abutting portion 35 abuts on the bottom surface 21a of the socket fitting 21 and is further pushed in. While the portion 35 is not in contact with the bottom surface 21a, there is almost no insertion / removal resistance of the terminal fitting portion 33, which is set so as to be loosely fitted to the inner peripheral surface of the socket fitting 21. The workability of attaching and detaching the insulating cap 31 does not deteriorate.

In each of the above embodiments, the terminal fitting portion 3
(33) is formed on the connection terminal 2 (32) for the high voltage electric wire,
The high voltage tower part 2 whose terminal receiving part is a high voltage terminal mounting part.
However, the present invention is not limited to this, and the terminal fitting portion may be formed in the high voltage terminal mounting portion and the terminal receiving portion may be formed in the high voltage electric wire connecting terminal. Is. Further, the configuration of the connection terminal for the high-voltage electric wire, the high-voltage terminal mounting portion, the tip abutting portion of the terminal fitting portion, the cylindrical body portion, the terminal receiving portion, and the like according to the connection structure of the high-voltage electric wire of the present invention is the same as that of the above-described embodiment. It is needless to say that the present invention is not limited to the above, and can be appropriately changed based on the gist of the present invention.

[0034]

According to the connection structure of the high voltage electric wire of the present invention,
When inserting the tubular body portion of the terminal fitting portion into the bottomed tubular shape of the terminal receiving portion, the tubular body portion is abutted until the tip abutting portion of the terminal fitting portion abuts the bottom surface of the terminal receiving portion. Since the terminal receiving portion can be set to be loosely fitted, the insertion resistance of the terminal fitting portion can be reduced. Further, even after the tip abutting portion abuts the bottom surface of the terminal receiving portion, the terminal fitting portion is further pushed, and a force in the compression direction acts on the terminal fitting portion. Is elastically deformed in the radial direction and is pressed against the inner peripheral surface of the terminal receiving portion in a surface contact state. Therefore, the tip abutting portion and the tubular body portion can be surely electrically connected to the terminal receiving portion. Therefore, it is possible to provide a good high-voltage electric wire connection structure in which a reliable electrical connection can be made in the fitting connection between the terminals and the workability of attachment and detachment does not deteriorate.

[Brief description of drawings]

FIG. 1 is an exploded cross-sectional view showing a state before a fitting connection of a high voltage electric wire connection terminal and a high voltage tower section according to a first embodiment of the present invention.

FIG. 2 is an overall perspective view of the connection terminal for a high voltage electric wire shown in FIG.

FIG. 3 is an assembled cross-sectional view showing a state after the fitting and connection of the connection structure for the high voltage electric wire shown in FIG.

FIG. 4 is a cross-sectional view showing a state before fitting and connection of a connection terminal for a high voltage electric wire according to a second embodiment of the present invention.

5 is an overall perspective view of the high-voltage electric wire connection terminal shown in FIG. 4. FIG.

6 is an assembly cross-sectional view showing a state after the fitting and connection of the connection structure for the high-voltage electric wire shown in FIG.

FIG. 7 is an exploded cross-sectional view showing a state before a fitting connection between a conventional connection terminal for a high voltage electric wire and a high voltage tower section.

FIG. 8 is an enlarged perspective view of a main part of the connection terminal for a high voltage electric wire shown in FIG.

9 is an assembled cross-sectional view showing a state after the fitting and connection of the connection structure for the high-voltage electric wire shown in FIG. 7.

[Explanation of symbols]

1 Insulation cap 2 Connection terminal for high voltage electric wire 3-terminal fitting 3a tubular body 4 slits 5 Tip contact part 6 protrusions 7 protrusions 8 Wire crimp part 10 Grommet 13 holder 15 high voltage electric wire 20 High-voltage tower section 21 Socket bracket 21a bottom 22 Cylindrical part

Continuation of the front page (56) Reference JP-A-10-22045 (JP, A) Actually opened 57-161876 (JP, U) Actually opened 3-2567 (JP, U) Actually opened 64-2379 (JP , U) Actual flat 6-29005 (JP, U) Actual 60-147082 (JP, U) Actual flat 6-38170 (JP, U) Actual flat 6-73872 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01R 13/193 H01R 4/18 H01F 31/00 501 H01R 13/11

Claims (6)

(57) [Claims] 1. A high-voltage electric wire is attached to a high-voltage terminal mounting portion by holding and fixing a connection terminal for a high-voltage electric wire, which is fixed to a terminal portion of the high-voltage electric wire, and a high-voltage terminal mounting portion provided on a device side in a fitted state. A connection structure for a high-voltage electric wire to be electrically connected, wherein the terminal fitting portion formed on one of the high-voltage electric wire connection terminal and the high-voltage terminal mounting portion is the other terminal formed in a bottomed tubular shape. A tip abutting portion that abuts the bottom surface of the receiving portion,
That tip abutment portion and a cylindrical body portion a force in the compression direction by Rukoto is urged in the insertion direction rear end abuts elastically deformed in diameter direction acting on the bottom surface Characteristic high voltage electric wire connection structure. 2. The tip abutting portion and the tubular body portion
The high according to claim 1, wherein the high is formed integrally.
Piezoelectric wire connection structure. The cylindrical body according to claim 3, wherein the terminal fitting portion is, according to claim 1 or 2, characterized in that it has a distal end insertion direction rear side spiral slit formed along the contact portion High voltage electric wire connection structure. The cylindrical body according to claim 4, wherein the terminal fitting portion is disposed at equal intervals in the circumferential direction extends along the insertion direction, in that it has elastically deformable plurality of Zhang pieces in diameter direction The connection structure for a high voltage electric wire according to claim 1 or 2 . 5. The tubular body of the terminal fitting portion is 1 to claim characterized by having a projection which projects in the diameter direction
4. The connection structure for a high voltage electric wire according to any one of 4 above. 6. distal abutment of the terminal fitting portion is, the high-voltage wire as claimed in any one of claims 1乃<br/> optimum 5, characterized in that it has a projection which projects in the insertion direction Connection structure.