JPH0356646Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a threaded stud (Christmas tree stud) that is welded onto a fixed part of an automobile body, etc.
This invention relates to a new synthetic resin clip used for attaching a plate-like member (trim or bracket) to a plate.

[Prior Art and its Problems] Conventionally, a one-touch attachment type clip having a pair of elastic locking claws projecting diagonally into an inner diameter hole is well known, and this clip is used to easily and easily attach a plate-like member to a threaded stud. Can be easily fixed.
When fixing, the elastic locking claws of both clips may not engage the threads of the stud at the same time at diametrically opposed positions, and in this case, the clips cannot firmly hold the plate member, causing play. will occur. Of course, it is possible that both elastic locking claws engage with the threads of the stud at the same time.
In that case, even though there was no backlash, there was no surface pressure pressing down on the plate-like member, and the inner end of the clip and the plate-like member were simply in contact.

In addition, conventional clips that are screwed onto threaded studs are known, but although this generates axial force to generate the surface pressure that presses down the plate-shaped member, tools such as an air driver are used to tighten the screw. is necessary.

[Purpose of the invention] The purpose of the invention is to provide a one-touch mounting clip that generates axial force to firmly fix a plate-like member to a threaded stud without play.

[Structure of the invention] In order to achieve this object, the present invention is a clip used for attaching a plate-like member to a threaded stud that is welded to a fixed part of an automobile body, etc., and includes a synthetic resin cap and a cup. The cap has a pair of diametrically opposed actuating protrusions on the inner surface of the open end and protrudes perpendicularly to the cap axis, and the cup is adapted to be received within the cap. The cup has a spiral double cam groove provided on its outer circumferential surface, a central inner diameter hole that is formed to penetrate in the axial direction and receives the stud, and a plate-shaped member to which the cup is to be attached. a resilient flange at the proximal end and a pair of resilient locking pawls projecting diagonally into the central inner diameter and away from the end to engage the cap into the cup; The clip is characterized in that, when the clip is pressed, the operating protrusion is operatively engaged with the slope of the double cam groove, and as the cap is pressed toward the cup, the cup is rotated.

[Operations and Effects of the Invention] According to the above structure, by simply fitting the cap into the cup and then pressing the clip against the stud, the operating protrusion of the cap will cooperate with the cam groove of the cup. As a result, the cup rotates, and its elastic locking pawl follows the thread of the stud. In the fully installed state, the locking pawl elastically engages with the screw thread due to the elasticity of the deflected elastic flange, preventing play. Moreover, by generating axial force, a large surface pressure can be applied to the plate member.

[Embodiments] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Referring first to FIGS. 1 to 4, the use of the clip 10 according to the present invention is sequentially illustrated. This clip 10 consists of a combination of a cap part 12 and a cup part 14. Figure 1 shows the state before the clip is attached, and the clip is attached to a stud (so-called Christmas tree stud) 18 with a screw 18A welded to a metal plate 16 of an automobile body (hereinafter referred to as the body). shaped member 2
I'm trying to fix it at 0. Figure 2 shows the plate member 2.
Pass the stud 18 through the through hole 20A formed at 0, place the plate member 20 on the body 16,
The clip 10 is shown fitted into the stud 18. If the clip 10 is further pushed towards the body 16 from this state, the state shown in FIG. , the clip 10 moves to the plate member 20. If the clip is pushed down further from this state, the state shown in FIG. 4 will be obtained, and the clip 10 will be in a fully attached state. At this time, the plate member 20 comes into close contact with the surface of the body 16 and is fixed.

With reference to FIGS. 5 to 11, clip 10
The cup portion 14 is made of synthetic resin and consists of a substantially cylindrical body 22. A double spiral cam groove 24 is formed on the outer peripheral surface of the main body 22.
The diametrically opposed upper ends of these cam grooves 24 are connected to an introduction groove 28 extending in the axial direction from the top surface 26 of the main body 22.
The lower ends, which are similarly diametrically opposed to each other, are the main body 2.
2 terminates in a closed stop groove 30 near the lower end.
The top edge of each introduction groove 28 is preferably chamfered 28A to facilitate introduction of the protrusion of the cap portion 12, as will be explained later.

Body 22 further includes a generally conical resilient flange 32 formed at its lower end which engages plate member 20 (FIG. 1) in use. Further, the main body 22 is formed with circumferentially extending annular ridges 34 and 36 near the top and bottom thereof.

Still further, the body 22 is provided with four upright inner walls 38, 40 extending from its lower end to near its top end, the inner walls 38, 40 having an axial direction for receiving the stud 18, as seen in FIGS. 1-4. A bore portion 42 is formed. A resilient locking pawl 44 projects obliquely upward toward the inside of the bore portion 42 from the lower ends of a pair of opposing walls 40 of these inner walls, that is, the inner walls corresponding to the introduction grooves 28, respectively. As can be seen from FIGS. 1 to 4, these locking pawls 44 are attached to the stud 1.
It cooperates with the screw thread 18A of 8.

Next, referring to FIGS. 12 to 16, there is shown a cap portion 12 of the clip 10 according to the present invention, which has a hollow cylindrical shape with one end open. Like 14, it is made of synthetic resin. A pair of circular operating protrusions 46 projecting inward are formed at diametrically opposed positions on the inner wall surface of the lower end of the cap portion 12, and these operating protrusions 46
The double helical cam groove 24 passes through the introduction groove 28 of 4.
and cooperates with this cam groove 24. In order to assist in inserting the operating projection 46 into the introduction groove 28 of the cap portion 14, a window 48 may be provided in a portion of the top wall 12A of the cap portion 12 corresponding to the operating projection 46.

A pair of protrusions 50 are provided on the inner wall surface of the lower end of the cap portion 12 at a position 180 degrees apart from the operating protrusion 46.
Each ledge 50 is formed with a partially annular groove 52 extending in the circumferential direction, and these grooves 52 connect to the upper and lower annular ridges 34 and 36 of the cup portion 14, as will be explained later. Collaborate.

In use, first, the operating protrusion 46 of the cap part 12 is inserted into the introduction groove 28 of the cap part 14 in a semi-assembled state.
A groove 52 in the ledge 50 of the cap 12 engages with the upper ridge 34 of the cup portion 12 and connects the cap portion 12 to the cup portion 1.
4. Hold on top. It will be convenient to use it if you keep it in this state. This semi-assembled clip 10 is pressed against the stud 18 after the plate member 20 is placed on the surface of the body 16 as shown in FIG. At this time, the groove 52 of the protrusion 50 of the cap part 12 separates from the upper protuberance 34 of the cap part 14,
The bore portion 42 of the cup portion 14 receives the stud 18, and its thread 18A engages with the locking pawl 44;
The flange 32 of the cup portion 14 contacts the surface of the plate member 20. When the clip 10 is pressed toward the plate member 20 and therefore the body 16 from this state, the operating protrusion 46 of the cap portion 12 located within the introduction groove 34 of the cup portion 14 enters the cam groove 24 from the introduction groove 28. , only the cup portion 14 is rotated in cooperation with the slope. The locking pawl 44 then moves along the thread 18A of the stud 18 and changes its engagement. FIG. 3 shows a state in which the cup portion 14 has been rotated by 180 degrees.
At this time, the flange 32 of the cup portion 14 is bent,
The plate member 20 will be pushed toward the body 16. When the clip 10 is further pressed against the plate-like member 20, the state shown in FIG. It will engage threads 18A of stud 18 at this position.
At this time, the groove 52 of the protrusion 50 of the cap portion 12
engages the lower ridge 36 of the cup portion 14 to lock the cap portion 12 to the cup portion 14. Fourth
As shown in the figure, even if only one of the locking pawls 44 is engaged with the thread 18A of the stud 18, the elasticity of the flange 32 causes the locking pawl 44 to elastically engage the thread 18A of the stud 18. Since it is pressed down, there will be no wobbling. In addition, as a reaction, the flange 32 presses the plate member 20 against the body 16 with sufficient force. In the illustrated embodiment, the flange 32 has a thin wall, but it may have a thick wall. In this case, the resilient locking pawl 44 will be in charge of most of the amount of deflection.

[Brief explanation of drawings]

FIGS. 1 to 4 are sectional views sequentially showing the usage of the clip according to the present invention. FIG. 5 is a side view of the cup portion of the clip of the present invention.
FIG. 6 is a longitudinal sectional view taken along the - line in FIG. 5. FIG. 7 is a plan view of the cup portion shown in FIG. 5. FIG. 8 is a longitudinal sectional view taken along the - line in FIG. 7. FIG. 9 is a cross-sectional view taken along the - line in FIG. 5. FIG. 10 is a cross-sectional view taken along the - line in FIG. 5. Figure 11 is - of Figure 5.
It is a sectional view along a line. FIG. 12 is a side view of the cap portion of the clip of the present invention. FIG. 13 is a plan view of the cap portion of FIG. 12. 14th
The figure is a longitudinal sectional view taken along the - line in FIG. 12. FIG. 15 is a longitudinal sectional view taken along the - line in FIG. 13. Figure 16 is - of Figure 12.
FIG. 3 is a cross-sectional view taken along a line. In the drawings, 10...clip, 12...cap part, 14...cup part, 16...body,
20...Plate member, 22...Main body, 24...Cam groove, 28...Introduction groove, 30...Stopping groove, 32...
Flange, 34, 36... annular ridge, 38, 40
...inner wall, 42...bore part, 44...locking claw,
46... operating projection, 48... window, 50... ledge, 52... groove.

Claims (1)

[Scope of utility model registration request] This clip is used to attach a plate-like member to a threaded stud that is welded to a fixed part of a car body, etc., and consists of a combination of a synthetic resin cap and a cup, and the cap has a pair of holes on the inner surface of the open end. diametrically opposed actuating projections projecting perpendicularly to the cap axis such that the cup is received within the cap;
The cup has a spiral double cam groove provided on its outer circumferential surface, a central inner diameter hole that is formed to penetrate in the axial direction and receives the stud, and a side closer to the plate member to which the cup is attached. a resilient flange provided at an end of the cap, and a pair of resilient locking pawls protruding into the central bore in a direction diagonally away from the end to engage the cap into the cup; 2. A clip according to claim 1, wherein when the clip is pressed, the operating protrusion operatively engages the slope of the double cam groove, and as the cap is pressed toward the cup, the cup rotates.