JPH053768Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention is designed to ensure that when two members are locked to each other using a locking tool, this locking is made firmly, and the two members are This invention relates to a locking tool that allows for easy release.

(Prior Art) As the above-mentioned locking tool, there is a conventional locking tool shown in FIG. 6, for example. To explain this with a diagram, 31
is a locking tool, and this locking tool 31 is composed of two members 32 and 33 to be locked together, a female mail 34 attached to one member 32 and a mail 35 attached to the other member. Ru.

The female mail 34 has a C-shaped portion 34a having a substantially C-shaped cross section, while the mail 35 has a circular portion 35a having a substantially circular cross section. Then, by fitting the circular portion 35a into the C-shaped portion 34a, the other member 33 is locked to one member 32. In this case, the inner circumferential surface of the C-shaped portion 34a clamps the circular portion 35a with elastic force to maintain the locked state.

When removing the circular portion 35a from the C-shaped portion 34a, the mail 35 is removed as shown by the arrow in the figure.
Pull it away from the female 34.
Then, as shown by the imaginary line in the figure, the circular portion 35a resists the elastic force of the C-shaped portion 34a and presses against this C-shaped portion 3.
The opening edge of 4a is elastically deformed so as to be expanded,
This releases the locked state.

(Problem that the invention attempts to solve) By the way, the above-mentioned female mail 34 and mail 35
In order to lock with a large locking force, the circular portion 35
It is conceivable to increase the elastic force of the C-shaped portion 34a that pinches a. However, in this case, after this, from the C-shaped part 34a to the circular part 35a
If an attempt is made to detach the two members, a larger external force is required for this detachment, resulting in the inconvenience that the work for detaching one member 32 from the other member 33 becomes complicated.

(Purpose of the invention) This invention was made with attention to the above-mentioned circumstances, and is designed to facilitate the subsequent separation of the two, even when the two mails are firmly engaged. The purpose is to

(Structure of the device) The feature of this device for achieving the above object is that a convex portion is formed on one of the inner circumferential surface of the C-shaped portion and the outer circumferential surface of the circular portion; A recess is formed on the circumferential surface of the C-shaped part so that when the circular part is fitted into the C-shaped part, the convex part and the recessed part fit into each other, while the C-shaped part and the circular part fitted into each other When the circular part is relatively rotated around the axis of the circular part, the circumferential surface on the side where the recessed part is formed rides on the convex part.

(effect) The effects of the above configuration are as follows.

C-shaped part 25a of female mail 25 and mail 2
When the two members 3 and 14 are locked to each other in a desired state by fitting the circular portions 26a of the C-shaped portions 25a and 26a, the inner peripheral surface of the C-shaped portion 25a and the circular portion 26
A convex portion 25b and a concave portion 26b formed on the outer circumferential surface of a are fitted into each other.

When the female mail 25 and the mail 26 are to be separated from each other, they are rotated relative to each other with the axis of the circular portion 26a as the rotation center C. Then, the peripheral surface on the side where the concave portion 26b is formed becomes the convex portion 2.
5b, and the inner circumferential surface of the C-shaped portion 25a and the outer circumferential surface of the circular portion 26a are separated. For this reason, C
The fitted state between the character-shaped portion 25a and the circular portion 26a is partially or completely released.

In the above case, from the rotation center C, the convex portion 25b
The distance from the center of movement C to the point of application of external force when relatively rotating the female mail 25 and the male mail 26 is sufficiently long compared to the distance from the fitting position between the female mail 25 and the recess 26b. A small external force is sufficient, so Female Mail 25 and Mail 2
6 can be easily removed.

(Example) Hereinafter, an example of this invention will be described with reference to FIGS. 1 to 5.

In FIG. 2, reference numeral 1 denotes an automobile, and the front surface of the vehicle body 2 is formed by a front panel 3, which is the stationary side of the vehicle body. Further, 4 is a front window, 5 is a headlamp, 6 is a bumper, and 7 is a front wheel.

2 to 4, the automobile 1 has a radiator 9 mounted on the front part of the vehicle body 2. As shown in FIGS. This radiator 9 has a water supply pipe 10 at its upper part, and this water supply pipe 10 is opened and closed by a cap 11. The front surface of the front panel 3 corresponding to the water supply pipe 10 is a recess 12, and an opening 13 is formed in the bottom surface of the recess 12. Water can be supplied to the water supply pipe 10 through this opening 13.

A front panel cover 14 is provided for opening and closing the opening 13, and this front panel cover 14
is fitted into the recess 12. The front panel cover 14 is made of sheet metal and is formed by joining an inner panel 15 and an outer panel 16 in the middle. And this front panel cover 1
4, the front panel 3 is secured by a pair of left and right upper locking tools 18, 18 and lower locking tools 19, 19, respectively.
It is removably attached to.

The lower locking tool 19 will be explained with reference to FIG.

An elastic projection 20 made of resin is fitted into the inner panel 15 of the front panel cover 14, and this projection 20 projects toward the front panel 3. On the outer circumferential surface of the protruding end of this protrusion 20, locking protrusions 20a are formed at a plurality of locations in the circumferential direction. Further, this protrusion 20 is fitted onto the inner panel 15 so as not to rotate about its axis. On the other hand, a fitting hole 21 is formed in the lower opening edge of the opening 13, and the protruding end side of the projection 20 is removably fitted into the fitting hole 21.

23 is a cylindrical knob, and this cylindrical knob 23 is located inside the front panel 3. Locking protrusions 23a are formed at multiple locations in the circumferential direction on the inner peripheral surface of the front end side of the cylindrical knob 23, and the fitting holes 21
The cylindrical knob 2 is attached to the protruding end side of the protrusion 20 passing through the cylindrical knob 2.
The front end side of No. 3 is fitted externally. In this case, the protrusion 20
and the cylindrical knob 23 are located almost coaxially,
The front end surface of the cylindrical knob 23 is elastically pressed against the inner surface of the front panel 3. In this state,
A locking projection 23a formed on the cylindrical knob 23 is engaged with a locking projection 20a formed on the projection 20, whereby the lower end side of the front panel cover 14 is engaged with the lower opening edge of the opening 13. It has been stopped.

When the cylindrical knob 23 is rotated about 90 degrees around its axis as shown by arrow A in FIG. 3, the engagement of the locking projection 23a with the locking projection 20a is released. ing. Therefore, from this state, the cylindrical knob 23 is moved backward as shown by the arrow B and the imaginary line in the same figure, and at the same time, the front panel is moved together with the protrusion 20 as shown by the arrow C and the imaginary line in the same figure. If the lower end side of the cover 14 is moved forward, the lower end side of the front panel cover 14 will be detached from the front panel 3.

The lower end side of the front panel cover 14 can be locked to the front panel 3 by performing the operation opposite to the above.

The upper stopper 18 will be explained with reference to FIGS. 3 and 4.

A female female 25 made of resin is fitted to the upper opening edge of the opening 13. The female member 25 is an elastic body and has a C-shaped portion 25a having a substantially C-shaped cross section, and the axis of the C-shaped portion 25a extends in the vehicle width direction. Also, this female mail 2
5 opens the opening 1 so that it does not rotate.
It is fitted into the upper opening edge of No.3.

On the other hand, the inner panel 15 on the upper end side of the front panel cover 14 has a resin mail 2.
6 is fitted. This mail 26 is an elastic body and has a cylindrical circular part 26a.
The axis of 6a is parallel to the C-shaped portion 25a. Further, the mail 26 is also fitted onto the inner panel 15 so as not to rotate itself. This circular portion 26a is the C-shaped portion 2.
5a, so that the upper end side of the front panel cover 14 is locked to the upper opening edge of the opening 13.

Note that, as described above, the circular portion 26a is the C-shaped portion 2.
5a, the elastic force of the C-shaped portion 25a causes the inner circumferential surface of the C-shaped portion 25a to come into pressure contact with the outer circumferential surface of the circular portion 26a, thereby pushing the upper end side of the front panel cover 14 to the front. It is firmly fixed to the panel 3 side.

A convex portion 25b having a triangular cross section is formed on the inner circumferential surface of the C-shaped portion 25a, while a concave portion 26b having a triangular cross section as described above is formed on the outer circumferential surface of the circular portion 26a. There is. When the C-shaped portion 25a and the circular portion 26a are fitted into each other as described above and the front panel cover 14 is locked to the front panel 3 in a desired state, the convex portion 25b and the recessed portion 26b are fitted into each other.

In addition, in the above state, the circular portion 26a is connected to the C-shaped portion 2.
It is rotatable around the axis within 5a. That is, when the projection 20 is not locked by the cylindrical knob 23 and the lower end side of the front panel cover 14 is in a free state, the circular portion 26a fitted into the C-shaped portion 25a rotates about the axis. The front panel cover 14 is designed to rotate back and forth about a center C.

Then, as shown in FIG. 3, from the state in which the convex portion 25b and the concave portion 26b are fitted,
When the front panel cover 14 is rotated around the rotation center C by pulling the lower end side of the front panel cover 14 forward as shown by the arrow C in FIG. 1, the C-shaped portion 25a Inside the circular part 26a
rotates, and as shown in FIG.
The outer peripheral surface of a will ride on the convex portion 25b. Then, as shown by arrow D in FIG. 1, the circular portion 26a moves away from the C-shaped portion 25a while pushing and expanding both opening edges of the C-shaped portion 25a. The fitting of the circular portion 26a is released to some extent.

Note that, as described above, the circular portion 2
When the outer circumferential surface of 6a rides on the C-shaped portion 2
The circular portion 26a may be completely disengaged from the circular portion 5a.

In FIG. 1 and FIGS. 3 to 5, 2
Reference numeral 8 denotes an engaging protrusion, and this engaging protrusion 28 is integrally molded on the female body 25. That is, a tongue piece 29 extends upward from the female mail 25, and this tongue piece 29 once extends toward the upper end side of the front panel cover 14, and then is folded back toward the front panel 3. The folded portion serves as the engaging protrusion 28 .

The engaging protrusion 28 is provided closer to the end of the front panel cover 14 than the mail 26, that is, above the mail 26 and closer to the inner surface of the front panel cover 14. Further, the extending end 29a of the tongue piece 29 is located close to the outer surface of the recess 12 of the front panel 3.

Attach the front panel cover 14 to the front panel 3
When removing the front panel cover 14 from the front panel 3, first operate the lower locking tool 19 as explained in FIG. state. Next, the lower end side of the front panel cover 14 is pulled in the direction away from the front panel 3 as shown by the arrow C in FIG. let

Then, as described above, the outer peripheral surface of the circular portion 26a rides on the convex portion 25b, and the fitting of the circular portion 26a to the C-shaped portion 25a is released to some extent.
In this case, an external force is applied to rotate the front panel cover 14 from the rotation center C compared to the distance from the rotation center C to the fitting position of the protrusion 25b and the recess 26b. Since the distance to the lower end of the front panel cover 14 is sufficiently long, this external force may be small. Therefore, the above C
The fitting of the circular portion 26a to the character-shaped portion 25a can be easily released.

In addition, from the above state, the front panel cover 14
When further rotated, as shown by arrow E in FIG. 5, the upper end side of the front panel cover 14 above the mail 26 is pulled forward in the opposite direction to the above-mentioned pulling direction (arrow C in the same figure). It further rotates in the direction approaching panel 3. At this time, the upper end side of the front panel cover 14 comes into contact with the engagement protrusion 28, and further rotation is prevented.

From here, if you further pull the lower end side of the front panel cover 14, the front panel cover 1
4 begins to rotate in the direction of arrow C in the same figure with the contact point F with the engagement protrusion 28 as a fulcrum. Therefore,
According to this principle, the circular part 26a of the mail 26 easily pushes open both opening edges of the C-shaped part 25a of the female mail 25 and easily separates from this C-shaped part 25a.
withdrawal is completed.

The front panel cover 14 is attached to the engaging protrusion 28.
When the engagement protrusion 28 receives a predetermined load or more from the front panel cover 14 when the upper end side comes into contact with it, the tongue piece 29 is elastically deformed and its extending end 29a touches the outer surface of the recess 12 of the front panel 3. As a result, part of the load is supported on the front panel 3 side.

Although the above is based on the illustrated example, in the above configuration, the female mail 25 may be fitted to the front panel cover 14, and the mail 26 may be fitted to the front panel 3. In this case, the engaging projection 28 may be fitted to the front panel cover 14. It is integrally molded with the mail 26. In addition, C-shaped portion 2
5a and the circular portion 26a may be spherical. Furthermore, a concave portion 26b may be formed in the C-shaped portion 25a, and a convex portion 25b may be formed in the circular portion 26a.
These convex portions 25b and concave portions 26b may have other shapes such as a semicircular cross section.

(Effect of the invention) According to this invention, a convex portion is formed on either the inner peripheral surface of the C-shaped portion or the outer peripheral surface of the circular portion,
A recess is formed on the other circumferential surface so that when the circular part is fitted into the C-shaped part, the convex part and the recess fit into each other, while the C-shaped part and the circular part fitted into each other When the parts are rotated relative to each other around the axis of the circular part, the circumferential surface on the side where the recessed part is formed rides on the convex part, so that the female mail and the male which are fitted into each other are separated. In this case, the C-shaped portion and the circular portion may be rotated relative to each other by relatively rotating both of them. In this way, the circumferential surface on the side where the recess is formed rides on the convex part, and the fitted state between the C-shaped part and the circular part is released.

Therefore, even when the female mail and the mail are firmly engaged, the subsequent work of separating the two can be facilitated.

[Brief explanation of the drawing]

The figures show an embodiment of this invention, in which Fig. 1 is a side cross-sectional view of the upper locking device, Fig. 2 is a front view of the automobile, Fig. 3 is a cross-sectional view taken along the - line in Fig. 2; FIG. 4 is an exploded perspective view of the upper locking device, FIG. 5 is an explanatory view of the operation corresponding to FIG. 1, and FIG. 6 is a side view showing a conventional example. DESCRIPTION OF SYMBOLS 1...Automobile, 2...Vehicle body, 3...Front panel (one member), 14...Front panel cover (other member), 18...Upper locking tool (locking tool), 25...Female , 25a... C-shaped portion, 25b... Convex portion, 26... Mail, 26a...
...Circular portion, 26b...Concave portion, C...Rotation center.

Claims (1)

[Scope of utility model registration request] The female mail attached to one of the two members has a C-shaped part with a substantially C-shaped cross section, and the mail attached to the other member has a circular part with a substantially circular cross section, and this circular part has a C-shaped part with a substantially C-shaped cross section. In a locking tool that is elastically deformed so as to expand the opening edge of the C-shaped portion and is removably inserted into the C-shaped portion, the inner peripheral surface of the C-shaped portion and the outer periphery of the circular portion are provided. A convex portion is formed on one of the circumferential surfaces of the surfaces, and a concave portion is formed on the other circumferential surface, so that when the circular portion is fitted into the C-shaped portion, the convex portion and the concave portion fit into each other. On the other hand, when the C-shaped part and the circular part fitted into each other are rotated relative to each other around the axis of the circular part, the circumferential surface on the side where the concave part is formed rides on the convex part. A locking device characterized by: