JPH04220975A - Electric connector - Google Patents

Abstract

PURPOSE: To provide an electric connector fixed to the wall of an automobile body, which is quickly assembled/disassembled on/from the wall and connectable/ disconnectable with slightly manual operation. CONSTITUTION: A connector has a connector housing 2 and a counter connector housing. A fixing ring 5 for fixing the counter connector housing on the wall of an automobile body is connected to a first longitudinal area 15 on the counter connector housing with a bayonet rotating and connecting means 13 and a box ring 3 on the connector housing 2 side is connected to a second longitudinal area 16 on the counter connector housing with a similar bayonet rotating and connecting means 14.

Description

[Detailed description of the invention]

0001

[Industrial Field of Application] The present invention relates to a connector for electrical plug-in connection penetrating a wall such as an automobile body wall, and the present invention relates to a connector housing having a chamber for a connector terminal and a connector housing for a mating connector terminal. and a mating connector housing having a chamber, the mating connector housing is provided with a mounting flange, and the mating connector housing extends forward from the mounting flange with a cylindrical cross-section. is connectable to the mating connector housing in a first longitudinal region of the mating connector housing provided on the front side of the mounting flange, and a bag ring is provided at the connector housing, which bag ring is connected to the mating connector housing on the mating side of the connector housing. The present invention relates to a device that can be connected to a second longitudinal region of a mating connector housing located in front of the first longitudinal region for connection with the connector housing.

0002

[Prior Art] In a wall-penetrating electrical connection, a mating connector housing of a connector is installed in an insertion opening in a wall separately from the connector housing, and even when the connector housing is pulled out, the mating connector housing is attached to the wall. It is known that the device remains attached to the insertion hole of the device.

According to a proposal from a while back, the mating connector housing that fits into the insertion hole in the wall has a thin thread on its circumferential surface, a fixing nut is screwed into this, and the fixing nut and the flange of the mating connector housing are screwed together. The mating connector housing is thereby fixed to the wall. A cap nut is attached to the mating connector housing, and this cap nut is screwed into a threaded portion of the mating connector housing that still protrudes from the fixing nut. Therefore, the connector housing can be selectively connected to or disconnected from the mating connector housing by tightening or loosening the cap nut, and when disconnected, the mating connector housing remains fixed to the wall. There is.

[0004] In this type of configuration, since it takes a lot of time and careful attention to tighten the fixing nut onto the thin thread, at least assembling the mating connector housing is time-consuming. This is because not only is the fixing nut large, but also difficult to tighten when the fixing nut is screwed into the external thread of the mating connector housing. The disadvantage of requiring a large thread also applies to the case of tightening cap nuts.

[0005]

OBJECTS OF THE INVENTION It is an object of the invention to improve a connector of the type mentioned in the field of industrial application, in which the connector housing and the mating connector housing require only a slight manual effort, in particular It is an object of the present invention to provide devices that can be quickly assembled to each other and to a wall.

[0006]

[Means for Solving the Problems] The above-mentioned problem is such that the connection between the fixing ring and the first longitudinal region of the mating connector housing is performed by a bayonet rotation coupling means, and the bag ring and the second longitudinal region of the mating connector housing are connected by a bayonet rotation coupling means. This solution is achieved in that the connection with the holder is likewise effected by means of a bayonet rotary coupling means.

[0007]

[Operation] In the embodiment according to the present invention, the fixing ring or the bag ring and the mating connector housing are connected by bayonet connection.

[0008]

[Effect of the invention] This bayonet connection allows easy and quick mounting and tightening of the fixing ring or bag ring, and simultaneous tightening of the wall between the fixing ring and the mating connector housing with only a little manual effort. Make it happen in time.

[0009]

[Embodiment] The main body of a connector 1 for electrical plug-in connection made of an artificial resin molded member includes a connector housing 2 having a cap nut 3, a fixing nut 5 and an elastic sealing ring 6.
This is the mating connector housing 4 that is attached. The cap nut 3 is provided with a cap flange 7 projecting radially inward at its rear end, which flange 7 engages with a shoulder surface (not shown here) of the connector housing 2 . The connector housing 2 protrudes rearward from the cap nut 3.

The connector housing 2 and the mating housing 4 each have a plurality of chambers for accommodating connector terminals, and these terminals are inserted into each other when the connector is in the coupled state shown in FIG. 2. For clarity, FIG. 1 shows only the round plug-in cap 8 for the mating connector housing 4 and the round plug-in pin 9 for the connector housing 2 among the connector terminals. are each crimped to the conductor of the wire. The mating connector housing 4 is provided with a mounting flange 12 projecting radially from a cylindrical jacket surface 11 in its rear region.

The fixing nut 5 and the cap nut 3 are fixedly fastened by bayonet coupling means 13 and 14, respectively, in a predetermined fixed state to the mating connector housing 4. Bayonet coupling means 13 for the fixing nut 5 are provided in a first longitudinal region 15 adjacent to the mounting flange 12 to the front end of the mating connector housing 4 . Bayonet coupling means 14 for the cap nut 3 are provided in a second longitudinal region 16 of the outer jacket surface 11 of the mating connector housing 4 , which second longitudinal region 16 extends forward from the first longitudinal region 15 . Preferably, it extends to the front end of the mating connector housing 4. The bayonet coupling means 13 for the fixing nut 5 has a similar size and shape to the bayonet coupling means 14 for the cap nut 3;
It constitutes the second stage of. This means that the fixing nut 5
can be pushed through the bayonet coupling means 14 for the cap nut 3 into the area of the associated bayonet coupling means 13. Each bayonet coupling means 13, 14 is provided with a locking recess 17, 18 at the fixed position of the fixing nut 5 or cap nut 3, respectively, and in this recess, the coupling member of the fixing nut 5 or cap nut 3 is fixed at the fixed position. Engaging and bayonet coupling means 1
Avoid loosening of parts 3 and 14.

The bayonet coupling means 13, 14 are formed by three-way threads having three thread grooves 19a, 19b, 19c uniformly distributed in the circumferential direction around the cylindrical connector housing. The groove begins at its front end, thus opening the inlet portions 21a, 21b, 2
Form 1c. Cylindrical pins uniformly distributed on three circumferential surfaces protrude radially inward from the inner circumferential surfaces of the fixed nut 5 and the cap nut 3, and are integrally formed on the corresponding inner circumferential surfaces 20. and its diameter and length are thread groove 1
9 in width and depth, so that the pin can move within it with a slight play. In FIG. 1, only one pin 22 of the three pins of the fixing nut 5 is shown. Similarly, three pins are provided on the inner circumferential surface of the cap nut 3, but these are not shown in the drawing for clarity.

The large inclination of the thread grooves 19a, 19b, and 19c is important; that is, the fixing nut 5 and the cap nut 3 can be tightened by just a slight turn on the mating connector housing 4, and at this time the pin 22 is attached to the thread grooves 19a, 19c. 19b, 19c
slide. Preferably, the amount of rotation of the cap nut 3 is approximately 1/
2 to 1 rotation. Since the bayonet rotation coupling means 13 for the fixed nut 5 is connected to the bayonet rotation coupling means 14 for the cap nut 3, the amount of rotation of the fixation nut 5 is slightly larger than that of the cap nut, but it is quite small. , preferably further 1/
This is about 4 to 1/2 turns, which means that the locking recess 1
It can be read from FIG. 1 by the circumferential distances 7, 18. Because the screw grooves 19a, 19b, and 19c have large inclinations, their fixation cannot be self-braking, so the locking recess 17 is formed with a roundness to prevent unexpected loosening.
, 18 works.

Between the thread grooves 19a, 19b, 19c,
In order to save material and reduce the weight of the mating connector housing 4, a cutout groove 23 is provided in the cylindrical outer cover surface 11,
As a result, thread-shaped protrusions 24 are formed on both sides of the thread grooves 19a, 19b, and 19c. This removal groove 23 is not opened at the front end of the mating connector housing 4, but is closed by a connecting protrusion 25 that extends in the radial direction and connects mutually adjacent protrusions 24, so that the mating connector housing At the front end of 4, there is only an entrance portion 21, which prevents the pin 22 from accidentally entering.

In order to assemble the connector housing 1 to the wall 26, for example, to the body wall of an automobile, as shown in FIG. The mounting flange 12 is inserted into the hole 27 until it comes into contact with the wall 26. The elastic sealing ring 6 is then inserted into the mating connector housing 4 from the opposite side. Also, mounting flange 1
It is also possible to arrange a sealing ring 6 between 2 and the wall 26. Then, turn the fixing nut 5 to its fixed position. In this fixed position the elastic sealing ring 6 is slightly compressed. Therefore, the sealing ring 6 is also a spring member 30,
This acts to release this bayonet connection, so that the pin 22 enters the locking recess 17,18. The pin 22 is pulled out from the locking recesses 17, 18 only with a predetermined reverse force. This prevents the fixing nut 5 from loosening unexpectedly.

The same problem exists when holding the cap nut 3 in its fixed position, in which the pin 22 should preferably likewise be biased elastically into the corresponding locking recess 18. , This prevents unexpected loosening, that is, separation. For this purpose, an elastic sealing ring (not shown) similar to the elastic sealing ring 6 may be inserted between the cap flange 7 of the cap nut 3 and the shoulder surface of the connector housing 2 mentioned above, or between the mutually facing surfaces of the cap nut 3. and the fixing nut 5.

Other forms and configurations of the spring 30 are also possible within the framework of the invention. The spring 30 is also formed, for example, by an elastic layer (not shown), which is provided on one of the axially acting mounting surfaces or pressing surfaces. Since the connector housing 2, the cap nut 3, the mating connector housing 4, and the fixing nut 5 are synthetic resin injection molded products, an elastic layer may be formed on at least one of the mounting flanges mentioned above, or on the sealing ring 6. Alternatively, it is possible and effective to form it in a simple manner and preferably on the surface of the fixing nut 5 facing the mounting flange 12 and/or the cap nut 3. An axially elastic spring 30 between the cap nut 3 and the fixing nut 5
is effective, a predetermined relationship or a predetermined spacing between these members in the mutual axial direction is required.

The embodiment according to FIGS. 3 to 6 has a cap nut 3
Alternatively, a spring 30 is shown integrally formed with the fixing nut 5 or both. In this embodiment, the spring 30
is preferably formed by a circumferentially extending bridging piece 32 which straddles the cutout 33 and is provided at one end (FIG. 6) or at both ends (FIG. 5) of the cutout 33 and which is self-contained. It can be bent in the transverse direction, that is, in the axial direction with respect to the members on which it is provided (cap nut 3, fixing nut 5), and its elasticity generates a spring force that tends to return it to its starting position. The fringe piece 32 is formed with sloped surfaces 34 and 35 in an arch-like or roof-like shape when viewed from the radial direction on the opposite side from the notch 33, thereby creating a spring protrusion 36. According to this configuration, at the fixed position of the cap nut 3 or the fixing nut 5, the corresponding spring protrusion 36 is attached to the longitudinal center axis 31.
bias against the fixing nut 5 or the wall 26 in the direction of
As a result, an axial biasing force is generated that tends to force the pin 22 of the cap nut 3 and the fixing nut 5 into the locking recesses 17 and 18. By this, each bayonet coupling means 13,
14 is prevented from coming off unexpectedly.

In the embodiment according to FIG. 3, a spring 30 is provided in the form of a bridge piece 32 on the side of the cap nut 3 facing the fixing nut 5, from which a corresponding spring projection 36 projects. Here, the notch 33 traverses the cylindrical wall of the cap nut 3 in the radial direction. In a similar manner, in addition to or instead of the sealing ring 6,
The same spring 30, formed by a bridge piece 32, is provided on the side of the fixing nut 3 facing the mounting flange 12, its spring projection 36 projecting from this side.

Instead of the structure provided on the cap nut 3 in FIG. 3, the spring 30 can also be provided on the side of the fixing nut 5 facing the cap nut 3, as shown in FIG.

[0021] In order to realize balanced biasing,
It is advantageous to provide a plurality, in particular two or three, of diametrically opposed springs 30, that is to say uniformly distributed over the circumference.

The cap nut 3 and the fixing nut 5 may have axial notches or grooves on their outer peripheral surfaces, thereby providing a grip portion for tightening and releasing the bayonet coupling means or a mounting portion for a rotary tool. can.

[0023] Although reference numerals are written in the claims for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

FIG. 1: Exploded perspective view of a connector according to the present invention.

[Figure 2] Side view showing the state in which the connector is assembled to the wall

[Fig. 3] A side view corresponding to Fig. 2 of another embodiment including a spring portion.

FIG. 4 is a side view corresponding to FIG. 2 of another embodiment including a spring portion.

[Fig. 5] Enlarged view of main parts showing a modified example of the spring part

[Fig. 6] Enlarged view of main parts showing a modification of the spring part

[Explanation of symbols]

3 Bag ring 4 Mating connector housing 5
fixed ring

Claims (20)

[Claims] 1. A connector for an electrical plug-in connection that penetrates a wall such as an automobile body wall, the connector housing having a chamber for a connector terminal and a mating connector having a chamber for a mating connector terminal. The mating connector housing is provided with a mounting flange, and the mating connector housing extends forward from the mounting flange with a cylindrical cross-section, and a fixing ring is provided on the front side of the mounting flange. A first longitudinal region of the provided mating connector housing is connectable to the mating connector housing, and a bag ring is provided at the connector housing, which bag ring facilitates the connection of the connector housing with the mating connector housing. Therefore, the fixing ring (5) and the mating connector housing (4) can be connected to the second longitudinal region of the mating connector housing located in front of the first longitudinal region.
) with the first longitudinal region (15) of the bladder ring (3
) and the second longitudinal region (
16) is similarly connected to the bayonet rotation coupling means (1
4) A connector characterized in that it is performed by: 2. The bayonet rotation coupling means (13
, 14) have the same cross-sectional area and shape, and the bayonet rotational coupling means (13) for said fixed ring (5) are axially similar to the bayonet rotational coupling means (14) for said bag ring (3). 2. The connector according to claim 1, wherein the connector is an extended portion. 3. The bayonet rotation coupling means (13
, 14) are formed by a screw having one or more thread passages and a large thread inclination, and the pins (
3. A connector according to claim 2, characterized in that 22) is fitted into the threaded passage. Claim 4: Three screw grooves (19a, 19b, 19
4. Connector according to claim 3, characterized in that c) and three pins (22) are each provided uniformly distributed on the circumferential surface. 5. The thread grooves (19a, 19b, 19c
) has a rectangular cross-sectional shape, and the pin (22) is cylindrical and has a shape matching the cross-sectional shape of the thread groove (19a, 19b, 19c). 6. At the rotary coupling means (13, 14), in particular one or more thread grooves (19a, 19b,
19c) on the front side surface of the fixing ring (5).
Connector according to any one of the preceding claims, characterized in that locking recesses (17, 18) are provided for bayonet rotational coupling means (pins 22) of the bag ring (3) and the bag ring (3). 7. Connector according to claim 6, characterized in that the locking recesses (17, 18) are round indentations. 8. The thread grooves (19a, 19b, 19c
), a thread-shaped extraction groove (23) extends in the front end of the mating connector housing (4), and extends in the circumferential direction and has grooves on both sides of the extraction groove (23). 8. Connector according to any one of claims 3 to 7, characterized in that the respective located edges (24) are connected by a connecting edge (25) connecting each other. 9. Between the mounting flange (12) and the fixing ring (5), the fixing ring (5) and the bag ring (3)
) and the bag flange (7) of the bag ring (3).
) and the shoulder of the connector housing (2) engaged by this bag flange.
), and this spring is compressed in the axial direction at the fixed position of the bag ring (3) and/or the fixed ring (5), so that an axial biasing force is applied to the part that contacts this spring. The connector according to any one of claims 1 to 8. 10. Connector according to claim 9, characterized in that the spring (30) is formed by a sealing ring (6) made of elastic material. 11. The spring (30) is arranged between the bag ring (3) and the connector housing (2), between the bag ring (3) and the fixing ring (5), and between the bag ring (3) and the fixing ring (5).
5) and the wall (26), an elastic layer at at least one of the mounting surfaces between said wall (26) and the mounting flange (12). connector. 12. The connector according to claim 11, wherein the elastic layer is foamed. 13. Connector according to claim 9, characterized in that a sealing ring (6) of elastic material is foamed at each at least one mounting surface. 14. The spring (30) is a spring (30) that is integrally formed with at least one of the mutually opposing members and can be elastically biased in the axial direction. Connector listed in any of the above. 15. The spring (30) has a notch (3
15. Connector according to claim 14, characterized in that it is formed by a bridging piece (32) extending over 3), which bridging piece is provided with a spring projection projecting from the associated mounting surface. 16. Connector according to claim 15, characterized in that the bridge piece (32) is integrally formed at both ends or at one end thereof. 17. Claim 1, wherein the bridge piece (32) extends in the circumferential direction of the connector (1).
5 or 16. 18. The spring projection (36) has -- in radial view -- rounded or roof-like sloped sides (34,
35) Claims 15 to 17 characterized by comprising:
Connector listed in any of the above. 19. Claim 1, characterized in that three springs (30) are provided, uniformly distributed in the circumferential direction.
19. The connector according to any one of 4 to 18. 20. The spring (30) is arranged on the side of the bag ring (3) facing the fixing ring (5), on the side of the fixing ring facing the bag ring (3) and/or the mounting flange (12). The connector according to any one of claims 14 to 19, characterized in that the connector is provided on at least one of the surface (5) and the surface of the mounting flange (12) facing the fixing ring (5).