JPH0566309U - Screw grommet - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] To provide a screw grommet that can firmly and closely connect panels. [Structure] The screw grommet 1 includes a main body member 4 having a flange 2 and a hollow shaft portion 3, and a locking member 5 housed in the hollow shaft portion 3 so as to be slidable in the axial direction but not rotatable, and locked. The member has a tubular portion 6 having a hole formed in the axial direction, which slides in the shaft portion of the main body member, and a locking claw 7 extending from the tubular portion to the flange side. The main body member shaft portion 3 is formed with an opening 11 through which the tip of the locking claw is exposed to the outside. A screw 19 inserted from the flange 2 toward the shaft portion 3 is screwed into the tubular portion 6 so that the locking member is slid toward the flange side, and the locking claw 7 projects outward from the opening 11 of the shaft portion 3. And a plurality of panels are brought into close contact with each other to be connected to each other in cooperation with the flange 2. When the screw 19 is reversed, the locking claw 7 is pulled inward of the shaft to release the panel.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a screw grommet that connects a plurality of panels to each other by screwing a screw into a hollow shaft portion.

[0002]

[Prior Art]

 A screw grommet that connects a plurality of panels to each other by screwing a screw into a hollow shaft is known. Japanese Utility Model Publication No. 54-22839 discloses a screw grommet including a thick flange, a shaft portion below the flange, and an anchor leg type locking claw extending from the shaft portion to the flange side. In this screw grommet, the first panel is supported between the screw and the flange by screwing the screw into the shaft from the flange, and the anchor panel type locking claw is inserted into the second panel to lock the first panel. The panels are connected to each other by being supported between the claws and the bottom surface of the flange.

[0003]

[Problems to be solved by the device]

 In the above screw grommet, the first panel can be firmly supported by tightening the screws, but the second panel is supported by the anchor leg type locking claws, so that the support is not rigid. Therefore, the panels could not be firmly connected to each other. Further, in the above-mentioned screw grommet, since the two panels are connected with the flange sandwiched between them, the panels could not be connected in close contact with each other.

Therefore, an object of the present invention is to provide a screw grommet that can firmly and closely connect panels to each other.

[0005]

[Means for Solving the Problems]

 In order to achieve such an object, according to the present invention, a main body member having a flange and a hollow shaft portion, and a locking member that is slidable in the hollow shaft portion but housed so as not to rotate, The locking member has a tubular portion that slides in the shaft portion of the main body member and has a hole formed in the axial direction, and a locking claw that extends from the tubular portion toward the flange side of the main body member. An opening is formed in the shaft of the member so that the tip of the locking claw is exposed to the outside, and the locking claw has a spring property so that the tip of the locking claw extends outward from the opening. When the inserted screw is screwed into the tubular part of the locking member and the locking member is slid toward the flange side, the locking claw extends outward from the opening of the main body member shaft and locks on the panel. The panel against the flange and rotate the screw in Sliding away from, the locking claw is a screw grommet, characterized in that outside the engagement of the panel is pulled into the body member shaft portion side is provided.

Further, according to the present invention, in addition to the above-mentioned features, the locking member has a tubular portion that is thinly connected to the shaft portion with the locking claw slightly protruding from the shaft portion of the main body member. A screw grommet that is characterized by being provided is provided to facilitate handling.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show a screw grommet 1 according to the present invention, and FIGS. 7 to 9 show how the panels are connected to each other using the screw grommet 1.

1 to 6, a screw grommet 1 according to the present invention is made of plastic and can slide in a body member 4 having a flange 2 and a hollow shaft portion 3 and a hollow shaft portion 3 but does not rotate. And the locking member 5 housed as described above. As is clear from FIGS. 3 and 4, the hollow shaft portion 3 is formed into a square tube so as not to rotate with respect to the mounting hole of the panel to be connected, and the locking member slidably accommodated therein. The member 5 is also formed in a rectangular tube so as not to rotate with respect to the hollow member 3. These shapes may be arbitrary as long as they are non-rotating.

As is apparent from FIGS. 5 and 6, the locking member 5 has a tubular portion 6 that slides inside the main body member shaft portion 3, and an engagement member that extends from the tubular portion 6 to the flange 2 side. It has a pawl 7. The outer shape of the tubular portion 6 is formed into a rectangular tube, and a hole 8 into which a screw is screwed is formed in the shaft center. As shown in FIG. 5, the locking claws 7 are formed in a pair on the upper part of the cylindrical portion 6 to obtain a high locking effect. As shown in FIG. 4, each locking claw 7 has a cylindrical shape. The complementary width is half the width of the part 6 to facilitate the molding of each locking claw. Further, each locking claw 7 has a locking surface 9 for locking at the corner of the panel at its tip, and each locking claw 7 is formed with a hinge at the cylindrical portion 6, and at this portion. Is provided with a spring property so that the locking surface 9 of the locking claw extends to the outside of the main body member shaft portion 2.

An opening 11 is formed in the shaft portion 2 of the main body member 4 so that the locking surface 9 at the tip of the locking claw 7 is exposed to the outside. The opening 11 is formed in a size including the two locking claws 7 so that the locking claws 7 can be conveniently formed. Through the opening 11, the locking claw 7 has the locking surface 9 at the tip thereof exposed to the outside due to the nature of the spring described above. In the locking member 5, the tubular portion 6 is connected to the shaft portion 3 by the thin portion 12 in a state where the locking claw 7 and the locking surface 9 of the locking member 5 extend from the main body member shaft portion 3. By this connection, the main body member 4 and the locking member 5 can be handled as one body, so that one member will not be lost, management will be easier, and handling will be easier.

A hole 14 through which a screw is inserted is formed in the center of the flange 2, and a ring-shaped projection 15 is formed in the periphery of this hole 14 so that the screw head into which the screw is inserted comes into close contact. It is designed to be sealed. In addition, a short claw 16 is formed in the screw hole 14 so as to project inward in the radial direction so that the inserted screw can be temporarily fixed.

An operation of connecting the two panels to each other by using the screw grommet 1 having the above structure will be described. First, as shown in FIGS. 7A and 7B, a packing 18 is provided on the lower surface of the flange 2, and a screw 19 is manually inserted from the upper portion of the flange 2. In this state, the screw 19 is not screwed into the hole 8 of the locking member tubular portion 6. However, the claw 16 provided in the hole 14 of the flange 2 engages with the shaft portion of the screw 19 to temporarily fix the screw 19.

After the screw 19 is temporarily fixed, as shown in FIG. 8, the shaft portion 3 of the screw grommet 1 is pushed into the mounting hole 23 while the first panel 21 and the second panel 22 are in close contact with each other. By this pushing, the shaft portion 2 passes through the mounting hole 23, the locking claw 7 is also tilted inward and passes through the mounting hole, and the flange 2 contacts the surface of the first panel 21. Then, the locking surface 9 of the locking claw 7 again comes out of the shaft portion 2 due to the spring property of the locking claw. This completes the preparation for engaging the locking claw 7 with the back surface of the second panel 22. Next, when the screw 19 is screwed into the tubular portion 6, the locking member having the tubular portion 6 and the locking claw 7 is slid to the flange 2 side. This slide breaks the thin portion 12 in FIG. By rotating the screw 19 and pulling up the tubular portion 6, the locking claw 7 is strongly locked to the second panel 22 while protruding outward from the opening 11 of the shaft portion 2 and the second panel 22 is moved to the first panel 22. The first panel 21 is brought into close contact with the panel 21 and brought into contact with the lower surface of the flange 2 via the packing 18.

When removing the screw grommet 1, the screw 19 is reversed to slide the tubular portion 6 of the locking member away from the flange 2. As a result, the locking claw 7 is pulled inward of the main body member shaft portion 2, and the locking of the locking claw 7 to the second panel 22 is released. This state is shown in FIG. As is clear from this figure, the screw grommet 1 has a cylindrical body with a straight shaft portion and can be pulled out as it is. Thereafter, in the case of reuse, the screw 19 may be rotated in the normal direction and the tubular portion 6 may be slid so as to be pulled up. In this case, although the thin portion 12 has already been broken, the screw 19 connects the locking member to the main body member, and the ease of management is not impaired.

[0015]

[Effect of the device]

 According to the screw grommet of the present invention, it is possible to firmly and closely connect the panels to each other by simply inserting the grommet shaft portion and rotating the screw in a state where the panels are in close contact with each other. The connection can be easily released, and the screw can be reused by inserting the grommet shaft portion and rotating the screw.

[Brief description of drawings]

FIG. 1 is a front view of a screw grommet according to the present invention.

FIG. 2 is a plan view of a screw grommet according to the present invention.

FIG. 3 is a bottom view of a screw grommet according to the present invention.

FIG. 4 is a cross-sectional view taken along the line AA of FIG.

5 is a cross-sectional view taken along the line BB of FIG.

6 is a cross-sectional view taken along the line CC of FIG.

FIG. 7 shows a state in which a packing is attached to the screw grommet according to the present invention and a screw is inserted, (A).
Is a front view thereof, and (B) is a sectional view taken along line D-D of (A).

FIG. 8 is a sectional view showing a state in which panels are connected using a screw grommet according to the present invention.

FIG. 9 is a cross-sectional view showing how the screw grommet according to the present invention is released from the connection.

[Explanation of symbols]

 1 Screw grommet 2 Flange 3 Shaft part 4 Body member 5 Locking member 6 Shaft part 7 Locking claw 8 Hole 9 Locking surface 11 Opening 12 Thin part 14 Hole 15 Ring-shaped protrusion 16 Claw 18 Packing 19 Screw 21, 22 Panel

Claims (2)

[Scope of utility model registration request] 1. A screw grommet for connecting a plurality of panels to each other by screwing a screw into a hollow shaft portion; a main body member having a flange and a hollow shaft portion; and an axial slide on the hollow shaft portion. A locking member housed so as not to rotate, the locking member sliding in the shaft portion of the main body member, the tubular portion having a hole formed in the axial direction, and the tubular portion. An engaging claw extending to the flange side of the main body member is formed, and an opening is formed on the shaft portion of the main body member to let the tip of the engaging claw outward, and the tip of the engaging claw extends outward from the opening. It has spring-out properties, and when a screw inserted from the flange of the main body member toward the shaft is screwed into the tubular portion of the locking member and the locking member is slid toward the flange side, it locks. Pull the claw outward from the opening of the main body member shaft. Then, the panel is brought into contact with the flange, the panel is brought into contact with the flange, and the screw is reversed to slide the engaging member away from the flange. A screw grommet that is released from the lock. 2. The locking member according to claim 1, wherein the tubular portion is thinly connected to the shaft portion with the locking claw slightly protruding from the shaft portion of the main body member. Screw grommet.