JPH086382Y2 - Screw type connector - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a screw tightening type connector, in particular, it can prevent overtightening of a screw, facilitate removal of the screw, and prevent damage to a screw thread. And a screw tightening type connector.

[Conventional technology]

Generally, a screw tightening type connector that prevents overtightening of screws and easily removes screws is disclosed in
There is a device as described in the publication of 63-13283.
The connector according to the present invention, as shown in FIGS. 13 and 14, has a female housing a for easy connection of the housings.
A bolt member 31 having a threaded portion 31a at its tip and a nut member 32 provided on the male housing b. The bolt member 31 and the nut member 32 are screwed to connect to the housings a and b. Giving force, male housing b
Is drawn to the female housing a side. Also, when the connection between the female housing a and the male housing b is completed,
The screw portion 31a of the bolt member and the nut member 32 are screwed to each other, and the bolt member 31 is formed so as to idle, thereby preventing damage to the housing and the like due to over-tightening of the screw. Further, the spring means 33 is contracted between the bolt member 31 and the female housing a, and when the bolt member 31 and the nut member 32 are screwed together, an axial pulling force f is applied to the bolt member 31. Is working. Since this pulling force f is constantly applied, the bolt member 31 is held at a position where it can be screwed into the nut member 32, the screws can be easily loosened after the housings are connected, and the connected housings can be easily detached. ing.

[Problems to be solved by the device]

However, in the above-described conventional screw tightening type connector, since the tensile force f in the axial direction is constantly applied to the bolt member 31, as shown in FIG.
There is a problem that the thread 34 at the rear end and the thread 35 at the tip of the nut member 32 are constantly in contact with each other, and the thread is crushed by the tensile force f.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a screw tightening type connector which solves the problems of the above-mentioned conventional technology, prevents overtightening of screws, facilitates screw removal, and prevents damage to the threads. It is in.

[Means for solving the problem]

In order to achieve the above-mentioned object, the present invention provides a bolt member having one end and a threaded portion formed on one housing and a nut member provided on the other housing as described in claim 1. In a screw tightening type connector formed so that the screw member and the nut member are screwed together when the housing is completely connected, and the screw member is screwed. , Is movably provided between the bolt member and one of the housings, and is in a position where the bolt member is held idle while the housing is connected, and when the bolt member is moved, the bolt member is engaged and the screw portion of the bolt member and the nut member are screwed. A bolt levitation means for lifting the bolt member to a position where it can be fitted is provided, and the bolt levitation means is inserted between the bolt member and disposed between the bolt member and one of the housings. Rotatable spacer, a locking projection formed on the spacer, a tapered surface formed on the one housing to move the spacer upward by contacting the locking projection when the spacer rotates, and a tapered surface on the tapered surface. And a locking step portion that holds the spacer formed and moved upward at a predetermined position.

Another solution is that the bolt floating means inserts the locking projection formed on the bolt member and the bolt member into a space between the bolt member and one of the housings. It comprises a spacer to be provided and a tapered surface formed on the spacer and contacting with the locking projections to move the bolt member upward when the bolt member rotates.

[Action]

In claim 1 and claim 2, since both the bolt floating means are provided so as to be movable between the bolt member and the one housing, the bolt member is in a position for idling and holding the bolt member in the housing connected state. It moves only when the housing is disengaged and engages with the bolt member, and lifts the bolt member to a position where the bolt member can be screwed with the nut member. Therefore, the bolt member that has finished screwing with the nut member and is in the idling state is not always held at a position where it can be screwed with the nut member.

〔Example〕

Embodiments of a screw tightening type connector according to the present invention will be described below with reference to the drawings.

FIG. 1 shows a first embodiment of a screw tightening type connector according to the present invention, in which a male housing A accommodating a female terminal (not shown) has a bolt member having a threaded portion 1a formed at its tip. 1 is provided so that it can be rotated and inserted and removed freely. Further, a female housing B accommodating a male terminal (not shown) is provided with a bolt hole 2 into which the tip of the bolt member 1 is inserted when the housing is connected. A nut member 3 that is screwed with the screw portion 1a is provided. The male housing A and the female housing B are separated by a gap d.
Only the screw part 1a of the bolt member 1
The bolt member 1 is formed so as to rotate idly after the screwing of the bolt member 1 with the nut member 3 is completed.

A ring-shaped member 4 is fixed to the lower surface of the head portion 1b of the bolt member 1, and the ring-shaped member 4 and the male housing A are attached.
A rotatably formed spacer 6 is disposed between the upper surface 5 and the upper surface 5. As shown in FIG. 2, the spacer 6 is formed in a cylindrical shape having a closed lower surface, and an insertion hole 7 through which the bolt member 1 is inserted is formed in the central portion of the lower surface 6a of the spacer. Further, on the peripheral portion of the lower surface 6a, locking projections 8 and 8 project downward in a diagonal position at a diagonal position, the height d'of which is d'≥d with respect to the gap d. It is set up.

On the other hand, the upper surface 5 of the male housing A is formed with substantially triangular recesses 9 and 9 corresponding to the locking projections 8 and 8. Each of the recesses 9 has a taper that comes into contact with the locking projection 8. Face 10
Are formed. As shown in FIG. 3, the tapered surface 10 is formed with a plurality of locking step portions 11 for locking the locking projections 8, and the tapered surface 10 has a saw-toothed cross section.

Then, after the male housing A is positioned on the female housing B, the head portion 1b of the bolt member 1 is rotated in the clockwise direction by using a tool (not shown), and the bolt member 1 and the nut member 3 are screwed to each other so that the housing is rotated. When you connect
As shown in the drawing, when the gap between the male housing A and the female housing B becomes d, the bolt member 1 starts to idle. At this time, since the vertical surface 8a of the locking projection 8 of the spacer 6 contacts the vertical surface 9a of the recess 9 of the male housing A, the spacer 6 does not rotate together with the bolt member 1.

When the rotation is further continued, the male housing A and the female housing B are completely brought into close contact with each other due to the vibration generated by the tool and the like, and the housing connection is completed. When the connection of the housings is completed in this way, the same spacing d as the spacing d generated between the male housing A and the female housing B becomes the rear end 12 of the screw portion 1a of the bolt member 1 and the nut member 3.
It will occur between the tip 13 and. Therefore, in this state, since the bolt member 1 is not in a position where it can be screwed into the nut member 3, even if the bolt head 1b is rotated counterclockwise by a tool to separate the male housing A from the female housing B, The member 1 only idles.

Therefore, as shown in FIG. 5, the spacer 6 is rotated counterclockwise to bring the locking projection 8 of the spacer into contact with the tapered surface 10 of the recess 9 of the female housing. Then, the rotation of the spacer 6 causes the locking projection 8 to move upward along the tapered surface 10, and the movement of the locking projection 8 causes the entire spacer 6 to move upward, and further the spacer 6 and the ring-shaped member 4 to move. The bolt member 1 engaged therewith is lifted upward. When the spacer 6 moves upward by the distance d, the bolt member 1 also moves upward by the distance d, and the bolt member 1 is lifted to a position where it can be screwed into the nut member 3. Further, when the locking projection 8 is locked to the locking step portion 11 of the tapered surface 10 at the position where the spacer 6 moves upward, the bolt member 1 is held at a position where it can be screwed with the nut member 3. Become. Therefore, when the bolt head 1b is rotated counterclockwise in this state, the bolt member 1 starts to be screwed with the nut member 3 and the bolt member 1 can be easily loosened, so that the male housing A can be replaced with the female housing A. It can be easily separated from B. Since the bolt member 1 is lifted to a position where it can be screwed only when the bolt member 1 is loosened, the screw member rear end 12 and the nut member tip 13 do not constantly come into contact with each other, preventing damage to the screw thread. be able to.

6 and 7 show a second embodiment of the present invention.
A cylindrical spacer receiver 14 is projected on the upper surface 5 of the male housing A, and a cylindrical spacer 15 whose lower surface is closed is loosely fitted in the spacer receiver 14. An insertion hole 7 through which a bolt member is inserted is formed in the central portion of the lower surface of the spacer 15, and a pair of locking projections 16 and 16 that project outward are formed at opposing positions on the peripheral wall thereof. On the other hand, substantially triangular notches 17 and 17 corresponding to the locking protrusions 16 and 16 are formed at the upper end of the spacer receiver 14, and each notch 17 is formed.
A tapered surface 18 having a saw-toothed surface is formed on the.

Therefore, in this embodiment as well, as in the first embodiment, the spacer
By rotating 15 in the counterclockwise direction, the spacer 15 can be moved upward through the contact between the locking projection 16 and the tapered surface 18, and the bolt member engaging with the spacer is moved upward by the movement of the spacer 15. Can be lifted to.
Further, since the surface of the tapered surface 18 is serrated, the spacer 15 moved upward can be held at a predetermined position, and the bolt member can be easily loosened.

FIG. 8 shows a third embodiment of the present invention. Like the first embodiment, the male housing A is provided with the bolt member 1 and the female housing B is provided with the nut member 3. As shown in FIG. 9, a ring-shaped member 4 is fixed to the lower surface of the head portion 1b of the bolt member 1, and a locking projection 19 is projected on the outer peripheral surface of the ring-shaped member 4.
Further, a washer-shaped spacer 20 as shown in FIG. 9 is provided between the ring-shaped member 4 and the upper surface 5 of the male housing A.
Is provided. An insertion hole 7 through which the bolt member 1 is inserted is formed in the central portion of the spacer 20, and a vertical surface 21 that abuts the locking projection 19 and a taper surface 22 are formed on the peripheral edge of the upper surface of the spacer 20. The protrusion 23 is formed.

Then, when the bolt head 1b is rotated clockwise with a tool to connect the male housing A and the female housing B, as shown in FIG. 10 and FIG. The locking projection 19 contacts the vertical surface 21 of the locking projection 23 of the spacer 20, and the bolt member 1 is screwed onto the nut member 3 while rotating the spacer 20. Then, as shown in FIG. 8, the gap between the male housing A and the female housing B is d.
When, the screwing of the bolt member 1 and the nut member 3 is completed, and when the rotation is further continued, the male housing A and the female housing B are completely brought into close contact with each other, and the connection is completed. At this time, the distance between the rear end of the threaded portion 1a of the bolt member 1 and the tip of the nut member 3 is d, and the bolt member 1 is held in an idling state.

When the bolt head 1b is rotated counterclockwise in order to disengage the male housing A from the female housing B, the abutment state of the engagement protrusion 19 on the bolt member 1 side and the engagement protrusion 23 on the spacer 20 side is changed. Unlocked, as shown in Fig. 12, the locking projection
19 contacts the tapered surface 22 and moves upward along the tapered surface 22. Then, the bolt head 1b moves upward through the ring-shaped member 4 along with the movement of the locking projection 19, and the bolt member 1 is lifted up. Then, when the bolt member 1 is lifted by the distance d, the bolt member 1 and the nut member 3 can be screwed together, and the continued connection of the housing can easily release the connected state of the housing.

Also in the case of this embodiment, since the bolt member 1 and the screw member 3 are not in constant contact with each other, it is possible to prevent the screw thread from being damaged, and by simply rotating the bolt member 1, the bolt member 1 is screwed from the idling state. Since the transition to the state can be performed continuously, the bolt can be removed quickly. Also, between the bolt head 1b and the male housing A,
Since only the washer-shaped spacer 20 is interposed, the entire bolt floating means can be formed compactly and the connector can be miniaturized.

[Effect of device]

As is apparent from the above description, according to the present invention, a movable member is provided between the bolt member and the one housing,
In the state where the housing is connected, the bolt member is in a position for idling and held, and the bolt member is lifted to a position at which the bolt member and the nut member can be screwed together by engaging with the bolt member by the movement. Since the nut member does not always contact with each other, it is possible to prevent the screw thread from being damaged. In addition, damage to the housing and the like due to over-tightening of the screws can be prevented, and the screws can be removed quickly and easily.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of a screw tightening type connector according to the present invention, FIG. 2 is a perspective view of a spacer used in the above embodiment, and FIG. 3 is one of a female housing of the above embodiment. FIG. 4 is an enlarged sectional view of a portion, FIG. 4 is a view showing a housing connection state of the above embodiment, FIG. 5 is a view showing a use state of the above embodiment, and FIG. 6 is a second embodiment of a screw tightening type connector according to the present invention. Fig. 7 is a perspective view showing an example, Fig. 7 is an exploded perspective view of the above embodiment, Fig. 8 is a vertical sectional view showing a third embodiment of the screw tightening type connector according to the present invention, and Fig. 9 is used for the above embodiment. 10 is a perspective view showing a bolt member and a spacer to be used, FIG. 10 is a perspective view showing a combined state of the bolt member and the spacer in the above embodiment, FIGS. 11 and 12 are views showing a use state in the above embodiment, FIG. And FIG. 14 is a vertical sectional view showing a conventional screw tightening type connector. A ... Male housing, B ... Female housing, 1 ... Bolt member, 1a ... Screw part, 1b ... Head part, 3 ... Nut member, 6, 15, 20
... Spacer, 7 ... Insertion hole, 8,16,19,23 ... Locking protrusion, 9 ...
Recesses, 10, 18, 22 ... Tapered surface, 11 ... Locking step, 14 ... Spacer receiver, 17 ... Notch.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuo Hirayama 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Co., Ltd. (72) Inventor Yuji Hatagishi 206-1, Nunobikihara, Haibara-cho, Hara-gun, Shizuoka Prefecture Yazaki Parts Incorporated (56) References JP-A-63-13283 (JP, A)

Claims (2)

[Scope of utility model registration request] 1. A connection between housings is provided by screwing a bolt member provided on one housing and having a threaded portion at a tip end thereof with a nut member provided on the other housing to provide a force for connecting to the housing. When the screwing of the bolt member and the nut member is completed at the time of completion, and the bolt member is formed so that the bolt member idles, it is movably provided between the bolt member and one of the housings. In a state where the housing is connected, the bolt member is at a position for idling and held, and is provided with a bolt levitation means for engaging the bolt member by movement and lifting the bolt member to a position at which the threaded portion of the bolt member and the nut member can be screwed together. The levitation means includes a rotatable spacer that is inserted between the bolt member and arranged between the bolt member and the one housing, and a floating spacer formed on the spacer. Locking protrusion, and a tapered surface formed on the one of the housings to move the spacer upward by coming into contact with the locking protrusion when the spacer rotates, and the spacer formed on the tapered surface and moved upward at a predetermined position. A screw tightening type connector characterized in that it comprises a locking step portion for holding. 2. A connection between the housings is provided by screwing a bolt member provided on one housing and having a threaded portion at a tip end thereof with a nut member provided on the other housing to provide a force for connecting to the housing. When the screwing of the bolt member and the nut member is completed at the time of completion, and the bolt member is formed so that the bolt member idles, it is movably provided between the bolt member and one of the housings. In a state where the housing is connected, the bolt member is at a position for idling and held, and is provided with a bolt levitation means for engaging the bolt member by movement and lifting the bolt member to a position at which the threaded portion of the bolt member and the nut member can be screwed together. The levitation means includes a locking protrusion formed on the bolt member and a spacer provided between the bolt member and one of the housings, through which the bolt member is inserted. Sa and, formed on the spacer, screw tightening type connector, characterized in that comprising a tapered surface for moving contact with the bolt member and the engaging projection upward when the bolt member rotates.