JPH0648167Y2 - Combination connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a combination connecting device including a female member and a male member inserted and held in the female member, for example, between a substrate and a component attached to the substrate. Provided and used to secure components to the board.

[Prior Art] Conventionally, as a combination coupling device of this type, a female member fixed in a square mounting hole provided in either one of a board and a component to be mounted on the board, and a female member provided on the other The female member is inserted and held in a member, and the female member has a collar portion that is slightly larger than the mounting hole, a body portion that hangs down from the collar portion and is fitted into the mounting hole, and a collar portion to the body portion. An insertion hole that penetrates up and down, an elastic locking means that locks the body part in the mounting hole in cooperation with the collar part, and a male member inserted in the insertion hole is restrained in the insertion hole. Elastic holding means for
The male member protrudes into the insertion hole of the female member and expands the elastic holding means against its elastic force, and an expanding portion that is located on the expanding portion. It is known to have a constricted portion that frictionally engages. (For example
39625, Japanese Patent Publication No. 60-12510).

The former (Japanese Utility Model Publication No. 57-39625) has a U-shaped notch formed in the body of the female member, and the tongue-like locking means and the holding means are held inside the notch. A pair of elastic pieces also serving as a means were provided.

In the latter (Japanese Patent Publication No. 60-12510), the female member has a U-shaped cutout in its body, and the tongue-shaped locking means facing each other inside the cutout. And a pair of elastic locking pieces are provided, and an annular holding piece as a holding means is provided in the hollow inside of the body portion, and the inner surface of the annular holding piece is opposed to each other in a direction orthogonal to the locking piece. There is provided a pair of protrusions that protrude inward and engage with the constricted portion of the male member to frictionally engage.

[Problems to be Solved by the Invention] However, in the former case, it was difficult to properly set the elastic force because the elastic piece served as both the locking means and the holding means. That is, when the elastic piece functions as the locking means,
The method in which the rigidity is set low has good insertability into the mounting hole. Further, when the elastic piece functions as the holding means, it is advantageous to set the rigidity thereof high so as to prevent the male member from coming off. However, both requirements are conflicting, and it was structurally impossible to meet both requirements.

On the other hand, in the latter, since the elastic locking piece and the annular holding piece are independent of each other, the elastic force of both can be set appropriately. However, since the upper end portion of the annular holding piece is connected to the flange portion, the protrusion must be projected from the middle of the height of the annular holding piece. For this reason, the distance to the constricted portion of the male member becomes relatively long, so that the insertion stroke of the male member becomes larger than that of the former one, and there is a problem that connection workability is poor.

Further, since the latter holding piece is annular and the locking piece is provided on the outside of the annular holding piece, the locking piece is provided between the outer peripheral surface of the annular holding piece and the inner surface of the locking piece. It requires an air gap to bend in the direction. Therefore, there is a problem in that the structure becomes complicated and it is very difficult to reduce the size and weight.

Therefore, the present invention is to solve the above-mentioned conventional problems, and an object thereof is to have a relatively simple structure despite the fact that the locking means and the holding means are independent of each other.
Moreover, the insertion stroke of the male member is short, and a combination connecting device suitable for downsizing and weight saving is provided.

[Means for Solving the Problems] The present invention is for achieving the above object, and the contents thereof will be described below with reference to the embodiments shown in the drawings.

According to the present invention, the body portion (3) of the female member (5) and the rectangular mounting hole (4) are formed along two opposite sides (for example, the short side 4a) of the rectangular mounting hole (4), and both ends are corners (4 ') on both sides of the two sides. ), Respectively, and a pair of outer pieces (10) that define the insertion holes, and project outward outward from each of the outer pieces, and face downwardly from the lower surface of the flange (7) to face the insertion holes (19). A pair of elastic locking pieces (11) as locking means that are flexible toward and parallel to the other two opposite sides (for example, long side 4b) of the rectangular mounting hole, and from the two sides to the inner side. A pair of elastic holding pieces (13) as holding means, which are spaced apart and face each other, and whose lower end portions are connected to the inner side surfaces of both outer pieces, respectively, are provided on the inner surfaces of the upper end portions of both holding pieces toward the insertion hole. It is characterized in that projections (14) facing each other and projecting inwardly are engaged with the constricted portion (18) of the male member (5) and frictionally engage with each other.

[Operation] First, when inserted into the mounting hole (4) of the body portion (8) of the female member (5), both elastic locking pieces (11) are pushed toward the insertion hole by being pushed by the edge of the hole, When it passes under the mounting hole, it is restored again, and the panel (1) is sandwiched between the lower surface of the collar (7) and the lower surface, and the body is locked in the mounting hole.

Next, in order to connect the female member and the male member (6) to each other, the male member may be inserted in alignment with the insertion hole (9) of the body portion locked in the mounting hole.

As a result, the expanded portion (17) of the male member comes into contact with the protrusion (14) at the upper end of the holding piece (13) protruding into the insertion hole, and when the male member is strongly pushed in by this, Part is pushed outward, and the outer surface of the retaining piece is the other two sides of the square mounting hole that face each other (4b)
Since it is separated from, it bends outward from its lower end as it approaches the two sides. Then, when the expanded portion of the male member passes through the protruding portion of the holding piece, the holding piece is restored, and the protruding portion bites into the constricted portion (18) of the male member to frictionally engage the male member with the female member. Restrain it in the insertion hole of the member.

[Embodiment] The present invention will be described below based on an embodiment shown in the drawings.

In the figure, 1 is a panel, 2 is a mounting part to be mounted on the panel 1,
Reference numeral 3 indicates a combination connecting device 3 for detachably attaching the attachment part 2 to the panel 1, and the connecting device 3 is the panel 1
The female member 5 is fixed in the mounting hole 4 formed in the female member 5, and the male member 6 is hung from the lower surface of the mounting component 2 and inserted and held in the female member 5. Has a proper rigidity and elasticity, and is integrally formed of, for example, POM (polyacetal).

The female member 5 has a rectangular flange portion 7 that is slightly larger than the rectangular mounting hole 4 formed in the panel 1, and a body portion 8 that hangs down from the lower surface of the flange portion 7 and is fitted into the rectangular mounting hole 4. And an insertion hole 9 which vertically penetrates from the collar portion 7 to the body portion 8.
To open a series.

The body portion 8 has two sides 4a and 4b of the rectangular mounting hole 4 which face each other.
A pair of outer pieces 10, 10 whose both ends respectively contact the corners 4 ', 4'of both sides of the two sides 4a and define the insertion hole 9 are provided.
The mounting hole 4 is a horizontally long rectangle, and the two sides 4a are short sides.

Further, each outer piece 10 is provided with elastic locking means for locking the body 8 in the mounting hole 4 in cooperation with the flange 7. This locking means is formed by notching the upper end of each outer piece 10 in a U-shape, is surrounded by the notch, and protrudes inward toward the lower surface of the collar portion 7 inwardly, facing each other across the insertion hole 9. It is composed of a pair of tongue-shaped elastic locking pieces 11, 11.

Further, elastic holding means for restraining the male member 6 inserted in the insertion hole 9 in the insertion hole 9 is provided in the space between the both outer pieces 10. This holding means is located parallel to the other two sides of the rectangular mounting hole 4, that is, the long sides 4b, 4b in this case, and is located inwardly from the long side 4b, and both ends of the lower end are both outer side pieces. It is composed of a pair of tongue-shaped elastic holding pieces 13, 13 which are connected to the inner surface of 10 via connecting portions 12, 12 and which face each other with the insertion hole 9 interposed therebetween.
Each holding piece 13 has a semi-circular cross-section protruding portion 14 that protrudes inward from the inner surface of the upper end of the holding piece 13 so as to face each other toward the insertion hole 9.
Are provided respectively.

In addition, the opening upper surface of the insertion hole 9 is cut left and right to a position where the upper ends of the two locking pieces 11 face upward, and the front and rear edges of the upper and lower edges of the holding pieces 13 face each other. Shaped notches 9 ', 9'are provided.

The male member 6 abuts on the collar portion 7 of the female member 5 and holds a lower surface of the mounting component 2 apart from the upper surface of the panel 1 and a circular base portion 15, and is hung vertically from the base portion 15 to form a female member. 7 is provided with an insertion leg portion 16 having a spindle-shaped cross-sectional shape that projects into the insertion hole 9.
The insertion leg portion 16 abuts on the protrusion 14 of the holding piece 13 of the female member 5 and expands the spindle-shaped expanding portion 17 that expands the facing interval between both holding pieces 13, and this expanding portion. Located on top of 17 and expanding section 17
An arc-shaped constricted portion (18) that frictionally engages with both protrusions (14) at a position where it passes under the protrusions (14).

Further, in the embodiment shown in the drawings, in consideration of the mountability of the male member 6, a rectangular insertion hole 19 is formed in the mounting component 2 so as to vertically penetrate, and the insertion hole is formed from the upper surface of the base portion 15 of the male member 6. A box-shaped head 20 to be fitted into 19 is provided integrally, and a pair of tongue-shaped pieces protruding outward obliquely toward the upper surface of the base 15 are formed by U-shaped notches on the left and right outer habits of the head 20. The claws 21, 21 are provided. Further, an upward suction cup-shaped annular elastic portion 22 is provided on the upper surface of the base portion 15.

Next, the procedure for attaching the male member 6 will be described. The body portion 8 of the male member 6 may be aligned with the attaching hole 4 of the panel 1 and inserted from above. At this time, since the mounting hole 4 has a rectangular shape, both short sides 4a
Insert the left and right outer pieces 10 alongside.

Thus, when the body portion 8 is inserted from above, both locking pieces 11 abut on the edges of the short side 4a of the mounting hole 4, respectively, and are pushed by the edge of the short side 4a so as to move from the lower end to the insertion hole 9. Then, the body portion 8 is fitted into the mounting hole 4. When the upper end of the locking piece 11 passes below the edge of the short side 4a, it returns by its own elastic restoring force, the upper end of the locking piece 11 is caught on the lower surface of the panel 1, and the collar portion 7 is formed. The panel 1 is vertically sandwiched between the lower surface of the male member 6 and the lower surface of the male member 6, and the body portion 8 of the male member 6 is locked in the mounting hole 4 (second
Figure).

Further, the procedure for attaching the male member 6 will be described. The head portion 20 of the male member 6 may be inserted from below so as to be aligned with the insertion hole 19 of the attachment component 2.
Also in this case, the mounting hole 5 and the outer surface of the head 20 are formed in a rectangular shape so that the mounting directionality thereof is not mistaken.

Thus, when the head 20 is inserted from below, its claw 21 is pushed by the inner edge of the insertion hole 19 and bends inward, and when the claw 21 passes through the edge of the insertion hole 19 upward, it returns with its own elastic restoring force. do it,
Sucker-shaped annular elastic part 22 caught on the upper surface of the mounting part 2
The mounting part 2 is elastically clamped from above and below between the upper surface of the
The head 20 of the male member 6 is locked in the insertion hole 19 of the mounting component 2 (FIG. 2).

Next, in order to attach the attachment component 2 to the panel 1, the attachment component 2 is inclined and the insertion leg portion 16 of the male member 6 attached to the lower end portion of the attachment component 2 is inserted into the insertion hole 9 of the female member 5 attached to the panel 1. Insert it diagonally from above according to.

Thus, when the insertion leg portion 16 of the male member 6 is inserted obliquely from above, the front and rear surfaces of the expanded portion 17 project into the insertion hole 9.
However, since the insertion leg 16 is inserted obliquely at this time, the protrusion 14 located on the front side with respect to the insertion direction of the insertion leg 16 is strongly pressed, Holding piece 13
Bends outwardly deeper than the lower end hinge portion 9 ', and the other holding piece 13 bends relatively shallowly (Fig. 12).

Further, when the insertion leg 16 is inserted deeply, one of the protrusions 14 reaches the constricted portion 18 constricted in an arc shape from the expansion portion 17, and after a little delay, the other protrusion 14 similarly expands. From the constricted portion 18, the holding pieces 13 return individually. At that time, the restoring force of both holding pieces 13 pulls the insertion leg portion 16 of the male member 7 into the insertion hole 9 of the female member 5 and the both holding pieces 13 try to restore symmetrically,
Rotational mometo occurs in the insertion leg 16 and the insertion leg of the male member 6
16 is drawn almost perpendicularly to the insertion hole 9 of the female member 5,
The flared portion 17 of the male member 6 passes under both protrusions 14.

In this way, when the expanding portion 17 of the male member 6 passes under both the projecting portions 14, the projecting portions 14 bite into the constricted portion 18 above the expanding portion 17 and frictionally engage with each other, and the male member 6 is inserted. The leg portion 16 is restrained in the insertion hole 9 of the female member 5, and the mounting component 2 is mounted on the upper surface of the panel 1 almost vertically (FIG. 13).

On the other hand, in order to remove the mounting part 2 from the panel 1, the mounting part 2 may be inclined with respect to the panel 1 (twelfth).
Figure).

Thus, when the attachment part 2 is tilted, the base of the male member 6
Since the mounting member 2 is held apart from the upper surface of the panel 1 by abutting 15 on the collar portion 7 of the female member 5, the base portion 15 of the male member 6 and the collar portion 7 of the female member 5 are held. The attachment part 2 is inclined with respect to the upper surface of the panel 1 with the contact as a fulcrum. With this inclination, the insertion leg portion 16 of the male member 6 is slightly pulled out from the insertion hole 9 of the female member 5.

At that time, the protrusions 14 of the female member 5 are expanded by the expanded portion 17 of the insertion leg portion 16.
The holding interval between both holding pieces 13 is widened.
When both projecting portions 14 of the female member 5 get over the maximum projecting portion 17 'of the expanding portion 17 of the male member 6, since the expanding portion 17 has a spindle shape, both holding pieces 13 are They restore each other inwardly, and the restoring force causes the insertion leg 16 of the male member 6 to be pushed out of the insertion hole 9 of the female member 5 and come off, so that the mounting component 2 is obliquely removed in the inclination direction.

The insertion leg portion 16 of the female member 6 may be inserted vertically into the insertion hole 9 of the female member 5 or may be pulled out vertically.

On the other hand, as shown in FIGS. 14 and 15, 23 is a metal leaf spring which is attached to both holding pieces 13 of the female member 6, and the leaf spring 23 has a U-shaped cross section and both ends thereof are bent. They are bent inwardly toward each other to form a bent portion 23 '. Also, both holding pieces of the female member 5
A shallow guide groove 24 into which the leaf spring 23 is fitted is provided on the outer surface of the guide groove 13, and a bent portion of the leaf spring 23 is provided at the upper end of the guide groove 24.
A deep locking groove 25 into which 23 'is fitted is provided.

In order to mount the leaf spring 23, it is sufficient to fit the guide groove 24 from below while slightly widening the distance between both ends thereof, and the bent portion 23 ′ of the leaf spring 23 elastically fits in the locking groove 25. When fitted, the leaf spring 23 will not come off (Fig. 15). Thus, by mounting the leaf spring 23, the spring force of the leaf spring 23 causes the female member 5 to move.
It is possible to increase the rigidity of the holding pieces 13 and improve the holding force of both holding pieces 13. It should be noted that the mounting of the leaf spring 23 is optional.

FIG. 16 shows another embodiment of the present invention, which is a male member 6
The insertion leg 16 of is made into a multi-stage structure. Insertion leg 16
In this, the expanded diameter portion 17 and the constricted portion 18 are alternately formed in two steps from the tip portion. According to this embodiment, the mounting height of the mounting component 2 can be adjusted in two steps. Incidentally, the number of stages is not limited to two, and many more stages may be used.

[Effects of the Invention] As described above, according to the present invention, although the locking means and the holding means are independent of each other, the structure is relatively simple and the insertion stroke of the male member is short. It is possible to provide a combination coupling device suitable for downsizing and weight reduction.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is an exploded perspective view, Figs. 2 and 3 are explanatory views of a combination connecting device, Fig. 4 is a front view of a female member, and Fig. 5 is a plan view of the same. 6 is a bottom view, FIG. 7 is a side view, FIG. 8 is a front view of a male member, FIG. 9 is a plan view, FIG. 10 is a bottom view, and FIG. 11 is a side view. , FIG. 12 is a cross-sectional view showing an engaged state of the combination coupling device, FIG. 13 is a cross-sectional view showing a coupling state of the combination coupling device, and FIG. 14 is a cross-sectional view of a female member showing a state in which a leaf spring is removed. FIG. 15 is a sectional view of the female member showing a state in which a leaf spring is mounted, and FIG. 16 is a sectional view of a connecting device in a connected state showing another embodiment of the present invention. 1 ... Panel, 2 ... Mounting parts, 4 ... Mounting holes, 4 '...
... Corners, 4a ... Short side, 4b ... Long side, 5 ... Female member, 6 ...
… Male member, 7… Female member collar, 8… Body, 9… Insert hole, 10… Outer piece, 11… Elastic locking piece, 13… Elastic holding piece, 14… Projection Part, 17 ... male member's expanded part, 17 '... maximum protruding part, 18 ... constricted part.

Claims (1)

[Scope of utility model registration request] 1. A base member and a female member fixed in a rectangular mounting hole provided in one of the components to be mounted on the base member, and a male member provided in the other member and inserted and held in the female member, The female member is a collar portion that is slightly larger than the mounting hole, a body portion that hangs down from the collar portion and fits into the mounting hole, and an insertion hole that vertically penetrates from the collar portion to the body portion and that penetrates vertically. Elastic locking means for locking the body in the mounting hole in cooperation with the collar.
Equipped with elastic holding means for restraining the male member inserted in the insertion hole into the insertion hole, the male member projects into the insertion hole of the female member, and the elastic holding means resists its elastic force. In the combination connecting device, which includes an expanding portion that expands and expands, and a constricting portion that is located on the expanding portion and frictionally engages with the elastic holding means, the female member has a rectangular shape in the body portion. Along the two opposite sides of the mounting hole, both ends contact the corners on both sides of the two sides, respectively, and a pair of outer pieces that define the insertion hole, and project outward outward from each outer piece, and the lower surface of the collar part And a pair of elastic locking pieces as the locking means, which are downwardly opposed to each other and are flexible toward the insertion hole, and parallel to the other two opposite sides of the rectangular mounting hole, and from two sides. A pair of elastic holding pieces serving as the holding means, which are spaced apart inward and face each other, and whose lower end portions are connected to the inner side surfaces of both outer pieces, respectively. The inner surfaces of the upper end portions of the two holding pieces are each provided with a protruding portion that is opposed to the insertion hole and protrudes inward, and that engages with the constricted portion of the male member and is frictionally engaged. Combination connecting device.