JPH0749056Y2 - Mounting structure for studs with male threads - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a mounting structure of a stud having a male screw portion, and the stud is used as an abutting stop member whose position can be adjusted, such as a trunk, a hood and a door of an automobile. use.

[Prior Art] Conventionally, regarding a mounting structure of a stud having a male screw portion of this kind, a stud having a male screw portion and a panel having a mounting hole formed at a mounting position of the stud are provided. It has been known that the mounting edge of the mounting hole has a single-turn screw thread for screwing the male thread portion of the stud (for example, Japanese Patent Publication No. 47-43100).

The stud is attached to the panel by screwing the male thread part into the thread of the mounting hole of the panel, and at the same time,
Install it at the standard height position by screwing in the required amount. The height position can be adjusted by changing the screwing amount of the stud with respect to the reference height position.

[Problems to be Solved by the Invention] However, in the above-described conventional mounting structure, since the panel is made of metal, the processing of the screw thread for the mounting hole is very troublesome and troublesome, and the screw thread There has been a problem that rust and the like are likely to occur from the processed part.

In the conventional mounting structure, the stud is mounted on the panel by screwing the male thread of the stud into the thread of the mounting hole of the panel. Since it has to be attached to the panel, it is troublesome to attach it to the panel, and there is a problem that it is troublesome.

Therefore, the present invention has been made in view of the problems of the above-described conventional mounting structure, and the purpose thereof is to:
By using a socket equipped with a female thread portion for screwing in the male thread portion of the stud and a mounting leg portion that is inserted into and locked in the mounting hole of the panel, it is possible to omit the processing of the thread on the mounting hole of the panel. The present invention intends to provide a mounting structure having the above structure.

A further object is to enable the stud to be quickly and highly accurately attached to the panel on the production line by allowing the stud to be pre-assembled in the socket and then inserted and locked into the panel via the socket. It is intended to provide a possible mounting structure.

In addition to this, an object of the present invention is to provide a mounting structure in which the adjustment range of the protrusion amount of the stud can be set to be large, and the insertion force of the socket is light and the locking force is high. .

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

That is, as shown in FIGS. 1 to 7, the mounting leg portion (50) is characterized by having the following three configurations.

The first is a cylindrical portion (41), which has an inner diameter equal to or larger than the outer diameter of the stud (10), penetrates vertically, and has the female screw portion (40) on the inner peripheral surface. have.

The second is a collar portion (51), and the collar portion (51) projects from the outer peripheral surface of the cylindrical portion (41) and has a diameter larger than that of the mounting hole (21) of the panel (20).

The third is a check claw (52). The check claw (52) faces the collar portion (51), projects from the outer peripheral surface of the cylindrical portion (41), and the panel (20). When passing through the mounting hole (21), the diameter is reduced by bending toward the hollow inside of the cylindrical portion (41), the diameter is expanded after passing through the mounting hole (21), and the collar portion ( The panel (20) is sandwiched between the front and back of the panel (51).

[Operation] Therefore, according to the present invention, first, the stud (10) can be preassembled to the socket (30).

That is, the male threaded portion (11) of the stud is screwed into the female threaded portion (40) of the socket to attach it to the socket, and at that time, the stud is screwed in the required amount to attach the stud to the reference position. .

Next, the socket in which the studs are preassembled is attached to the panel.

That is, the mounting leg portion (50) of the socket is locked by inserting the mounting leg portion (50) into the mounting hole (21) of the panel.

When inserting the mounting leg (50) of the socket (30), as shown in FIG. 1, insert it into the mounting hole (21) of the panel (20) from the side with the check claw (52). .

When the mounting leg (50) of the socket (30) is inserted, the check claw (52) engages with the mounting hole (21) of the panel (20).

Here, when the socket (30) is strongly pushed, the check claw (52) is pushed by the hole edge of the mounting hole (21) of the panel (20) and bends toward the hollow inside of the cylindrical portion (41). Put in. Therefore, the check claw (52) is reduced in diameter and passes through the mounting hole (21) of the panel (20).

Then, when the check claw (52) passes through the mounting hole (21) of the panel (20), the diameter is expanded as shown in FIG.

Therefore, as shown in FIG. 9, the panel (20) sandwiches the panel (20) from the front and back surfaces between the check claw (52) and the flange (51).

Therefore, the stud (10), as shown in FIG.
Attach it to the mounting hole (21) of the panel (20) through the socket (30).

The mounting position of the stud (10) to the panel (20) can be adjusted in the axial direction by changing the screwing amount of the stud (10) into the socket (30).

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

1 to 9 show a first embodiment of the present invention.
Fig. 2 is an exploded perspective view, Fig. 2 is an exploded side view showing a cross section of a main part of the same, Fig. 3 is a plan view of a stud, Figs. 4 to 7 show sockets, and Fig. 4 is the same side view. Fig. 5 is another side view, Fig. 6 is the same plan view, Fig. 7 is the same bottom view, and Figs. 8 and 9 are for explaining the mounting procedure. Fig. 8 shows a state in the middle of assembly. FIG. 9 is a cross-sectional view of the main parts shown in FIG. 9, and FIG. 9 is a cross-sectional view of the main parts showing the final assembled state.

In the figure, 10 indicates a stud, which is mounted downward on the inner surface of a panel 20 such as a trunk lid (not shown) of an automobile, and is attached to a body panel (not shown) when the trunk is closed. By abutting, it determines the height position of the trunk with respect to the body panel, and serves as a cushioning material when closing the trunk.

As shown in FIGS. 1 to 3, the stud 10 has a cylindrical shape, and a male screw portion 11 is formed on the outer circumference thereof. The male threaded portion 11 extends in the axial direction from the upper end of the stud 10 to the middle of the height, and is composed of a spiral thread 12 and a thread groove 13 formed in the interval between the upper and lower threads 12, and The outer diameter of the male screw portion 11 is made to match the outer diameter of the stud 10. And stud
10 is made of an elastic material, and is integrally formed of rubber here.

Further, in the figure, reference numeral 30 denotes a socket interposed between the stud 10 and the panel 20 for attaching the stud 10 thereto. As shown in FIGS. 1, 2, 4 to 7, this socket 30 is provided with a female screw portion 40 into which the male screw portion 11 of the stud 10 is screwed, and a mounting leg portion 50 which is inserted into and locked in the panel 20, and has an appropriate rigidity. And an elastic material such as a nylon resin are integrally molded.

More specifically, the female screw portion 40 of the socket 30 is
A cylindrical portion 41 having an inner diameter larger than the outer diameter of the stud 10 and a screw thread 12 of the stud 10 protruding from the inner circumference of the cylindrical portion 41.
And a single turn screw thread 42 that meshes with.

The mounting leg portion 50 of the socket 30 uses the upper half portion of the cylindrical portion 41, and in the middle of the height of the cylindrical portion 41, a flange portion 51 annularly protruding from the outer periphery thereof and an upper surface of the flange portion 51. And a non-return claw 52 that protrudes outward in the radial direction from the outer circumference of the cylinder of the cylindrical portion 41.

A pair of left and right check claws 52 are formed on the outer circumference of the cylindrical portion 41 so as to face each other. More specifically, a cutout portion 53 is formed in a downward U shape on the peripheral wall of the cylindrical portion 41, and the upper end thereof is connected to the peripheral wall of the cylindrical portion 41 as a hinge portion 54 on the inner side surrounded by the cutout portion 53. To The non-return pawl 52 has a sawtooth-shaped cross-section with its slope facing upward, and its lower surface and the collar portion.
The distance from the upper surface of 51 is set to be approximately equal to the thickness t of the panel 20.

On the other hand, as shown in FIGS. 1 and 2, the panel 20 has a circular mounting hole 21 having an inner diameter substantially equal to the outer diameter of the cylindrical portion 41 of the socket 30 and vertically penetrating therethrough. .

On the other hand, in FIGS. 1 and 2, reference numeral 60 denotes a cushion material, and this cushion material 60 has a donut shape, and in the center thereof,
Has an inner diameter approximately equal to the outer diameter of the cylindrical portion 41 of the socket 30,
A circular through hole 61 penetrating vertically is opened. The cushion material 60 is made of an elastic material, and is integrally formed of a foaming sponge.

Next, a procedure for attaching the stud 10, the panel 20, the socket 30, and the cushion material 60 having the above-described configuration will be described with reference to FIGS.

First, the three members of the stud 10, the socket 30 and the cushion material 60 are assembled in advance.

That is, the male screw portion 11 of the stud 10 is inserted from the bottom to the top in alignment with the open lower surface of the cylindrical portion 41 of the socket 30. When the male screw portion 11 of the stud 10 is inserted into the cylindrical portion 41 of the socket 30, the starting ends of the thread 12 of the stud 10 and the thread 42 of the socket 30 engage with each other inside the cylinder. Here, the stud 10
When the screw is screwed in, as shown in FIG. 8, the screw thread 12 and the screw thread 42 of the socket 30 mesh with each other and move upward in the cylinder, and by the meshing of the screw threads 12, 42, The stud 10 does not come out downward from the inside of the cylinder of the cylindrical portion 41 of the socket 30.

Then, the stud 10 is screwed into the inside of the cylindrical portion 41 of the socket 30 by a required amount.

Next, the through hole 61 of the cushion material 60 is fitted from above to the bottom of the cylinder portion 41 of the socket 30 in accordance with the outer circumference of the cylinder upper end, and the elasticity of the cushion material 60 is used to allow the check claw 52 to pass over. Then, as shown in FIG. 8, it is located on the upper surface of the collar portion 51.

The socket 30 in which the stud 10 and the cushion member 60 are assembled in this manner is then attached to the panel 20.

That is, the upper end of the cylinder of the cylindrical portion 41 of the socket 30 is connected to the panel 20.
Insert from the bottom to the top according to the mounting hole 21 of.

When the socket 30 is inserted, the upward slopes of the check claws 52, 52 projecting from the outer circumference of the cylindrical portion 41 are engaged with the inner edge of the mounting hole 21 of the panel 20, and the socket 30 is strongly pushed by this. Then, being pushed by the inner edge of the mounting hole 21, the check claw 52 passes through the mounting hole 21 of the panel 20 while bending from the upper end hinge portion 54 toward the inside of the cylinder of the cylindrical portion 41.

Then, when the lower surface of the check claw 52 passes above the hole edge of the mounting hole 21 of the panel 20, the check claw 52 is placed on the panel 20 by the elastic restoring force of the resin, as shown in FIG. It snaps back and its lower surface comes into contact with the upper surface of the panel 20, so that it cannot come down from the mounting hole 21 of the panel 20.

As shown in FIG. 9, the cushion material 60 fitted around the outer circumference of the cylindrical portion 41 of the socket 30 is crushed from above and below by the upper surface of the flange portion 51 and the lower surface of the panel 20. By sandwiching the panel 20 from the front and back sides with the upper surface of the flange portion 51 and the lower surface of the check claw 52 via 60, the socket 30
Is installed in the mounting hole 21 of the panel 20 without play.

In this way, by inserting and locking the socket 30 into the mounting hole 21 of the panel 20, the stud 10 is inserted into the panel 20 through the socket 30.
Fixed to the stud 10, the stud 10 projects below the panel 20.

On the other hand, in order to adjust the amount of protrusion of the stud 10 protruding below the panel 20, the stud 10 may be rotated in the forward and reverse directions.

That is, when the stud 10 is screwed into the socket 30, the stud 10 advances axially upward due to the action of the screw, and the protrusion amount with respect to the panel 20 is reduced.

It should be noted that when the stud 10 is screwed in to the maximum, the start end of the thread 42 of the stud 10 abuts on the end of the dead end of the thread groove 13, thereby limiting the maximum screwing amount. And
Even if the stud 10 is at the maximum screwed-in position, the lower end of the stud 10 projects downward from the lower end of the cylinder of the cylindrical portion 41 of the socket 30 so that the lower end of the cylindrical portion 41 of the socket 30 allows the body panel ( (Not shown) is not scratched.

Further, when the stud 10 is screwed in, the co-rotation of the cylindrical portion 41 of the socket 30 in the mounting hole 21 of the panel 20 is controlled by the upper surface of the collar portion 51 and the check claw 52 through the cushion material 60 described above. The bottom surface prevents the panel 20 from being clamped by the front and back surfaces.

On the other hand, when the stud 10 is rotated in the reverse direction, due to the action of the screw,
The stud 10 advances axially downward, and the amount of protrusion with respect to the panel 20 increases.

If the stud 10 is rotated in the reverse direction, the socket will eventually
Although it falls off from 30, it is set so that the adjustment range comes before that, and there is enough margin until the stud 10 comes off after exceeding the adjustment range.

FIG. 10 and subsequent figures show another embodiment of the socket 30 of the present invention, and FIGS. 10 and 11 show modified examples of the female screw portion 40 of the socket 30, respectively, and FIG. 13A and 13B show modifications of the mounting leg portions 50 of the socket 30, respectively.

First, FIG. 10 shows the socket in the embodiment described above.
A feature is that a screw thread 42 projecting from the inner circumference of the cylinder portion 41 of 30 is formed intermittently.

That is, in this embodiment, a plurality of protrusions 70 to 72 that engage with the screw threads 12 of the stud 10 are provided on the inner circumference of the cylindrical portion 41 of the socket 30 along the spiral locus.

According to this embodiment, the male screw portion 11 of the stud 10 can be screwed into the protrusions 70 to 72 protruding from the inner circumference of the cylinder portion 41 of the socket 30.

In the present embodiment, the projections 70 to 72 have a relatively long ridge, but the projections 70 to 72 may have a block shape or a hemispherical shape.

FIG. 11 shows the screw thread 12 of the socket 30 in the first embodiment.
Is formed on the inner circumference of the upper end of the cylinder of the cylindrical portion 41.

That is, in this embodiment, a single-turn, seat-shaped screw thread 80 that meshes with the screw thread 12 of the stud 10 is provided on the inner circumference of the upper end of the cylindrical portion 41 of the socket 30 so as to project.

According to this embodiment, the male screw portion 11 of the stud 10 can be screwed into the screw thread 80 protruding from the inner circumference of the upper end of the cylindrical portion 41 of the socket 30.

In this embodiment, the screw thread 80 is projected from the inner circumference of the upper end of the cylinder of the cylindrical portion 41, but the screw thread 80 may be formed on the inner circumference of the lower end of the cylinder of the cylindrical portion 41. Further, the screw thread 80 projecting from the inner circumference of the upper end of the cylindrical portion 41 may be formed intermittently as in the embodiment shown in FIG.

In the above-described embodiment, the stud 10 is used as a cushioning material capable of adjusting the height of the trunk lid of the automobile, but not limited to the trunk lid, it is possible to adjust the position of the pedal of the automobile in addition to the hood, door, etc. It may be used as an abutting stop member. Further, it may be used not only for automobiles but also for doors and windows of buildings, or doors of furniture and electric appliances.

Further, the stud 10 may be a rigid body in addition to the elastic material.

Further, the cylindrical portion 41 of the socket 30 is not limited to the cylindrical shape,
It may be a rectangular tube. Further, the mounting hole 21 of the panel 20 is not limited to a circular shape, but may be a square shape as long as it fits the outer shape of the cylindrical portion 41 of the socket 30.

[Effects of the Invention] As described above, according to the present invention, not only can the processing of the screw thread in the mounting hole of the panel be omitted conventionally, but also after the stud is assembled in the socket in advance, Since it can be inserted and locked in the panel via
The installation time on the panel on the production line can be shortened,
Moreover, when the stud is assembled into the socket by screwing in a required amount, the stud attachment position does not change when it is attached to the panel, and the stud attachment position with respect to the panel can be maintained with high accuracy.

In addition to this, the cylindrical portion of the mounting leg penetrates so that the total length of the stud can be set relatively long, and the adjustment range of the protrusion amount of the stud can be set relatively large without being affected by the position of the panel. can do.

Furthermore, the non-return pawl of the mounting leg part, when passing through the mounting hole,
By bending toward the inside of the cylindrical portion, the mounting leg portion can be inserted with a relatively light force.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIGS. 1 to 9 show a first embodiment of the present invention. FIG. 1 is an exploded perspective view and FIG. A side view, FIG. 3 is a plan view of the stud, and FIGS. 4 to 7 show sockets.
The figure is the same side view, FIG. 5 is another side view, FIG. 6 is the same plan view, FIG. 7 is the same bottom view, and FIGS. 8 and 9 are for explaining the mounting procedure. FIG. 10 is a cross-sectional view of an essential part showing a state during assembly, FIG. 9 is a cross-sectional view of an essential part showing a final assembled state, and FIG.
The figure shows another embodiment of the socket of the present invention.
FIG. 10 is a perspective view of a sectional view of a main part of a second embodiment of the socket,
FIG. 11 is a perspective view showing a sectional view of the essential parts of a third embodiment of the socket. 10 …… Stud, 11 …… Male thread, 20 …… Panel, 21…
… Mounting holes, 30 …… Sockets, 40 …… Female threads, 50 …… Mounting legs.

Claims (1)

[Scope of utility model registration request] 1. A stud having a male threaded portion, a panel having a mounting hole formed in accordance with a mounting position of the stud, and a socket interposed between the stud and the male threaded portion, the socket comprising: In a mounting structure of a stud having a male screw portion having a female screw portion for screwing the male screw portion of the stud and a mounting leg portion for being inserted and locked in the mounting hole of the panel, the mounting leg portion is equal to or larger than an outer diameter of the stud. A cylindrical portion having an inner diameter of, penetrating up and down, and having the female threaded portion on the inner peripheral surface; a flange portion projecting from the outer peripheral surface of the cylindrical portion and having a diameter larger than the mounting hole of the panel; It is opposed and protrudes from the outer peripheral surface of the cylindrical portion, and when passing through the mounting hole of the panel, the diameter is reduced by bending toward the hollow inside of the cylindrical portion, and the diameter is expanded after passing through the mounting hole. Before A mounting structure for a stud having a male screw portion, comprising: a non-return pawl for sandwiching the panel from the front and back surfaces with the flange portion (51).