JPH11270782A - Lock mechanism and fastener for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock mechanism that offers an easy locking or unlocking operation, has sufficient structural ruggedness and prevents loss of its fastener, and a fastener for use in the lock mechanism. SOLUTION: A main body 2 is formed with a mounting member 20 on which a fastener for locking a lid 1 is mounted, and the lid 1 is formed with a mounting member 10 adapted to be fitted on the main-body mounting member 20. The mounting member 20 has an extension part 21 extended from the side of the main body 2 and a mounting part 22 integrally connecting with the extension part 21. The mounting part 22 includes rail parts 23a and 23b on which the fastener is loosely fitted for sliding motion, a projection 24 for preventing the fastener from slipping off the rail parts 23a and 23b, and a recess 26 by which the fastener locks. The mounting member 10 has an extension part 10a and a rail part 10b. The lid 1 is locked onto the main body 2 by the movement of the fastener to a prescribed position beyond the rail part 10b with this rail part 10b being fitted on the mounting part 22 to serve as a part of the rail part 23a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock mechanism and a fastener therefor, and more specifically, a lock mechanism and a fastener which can be advantageously applied to a carburetor cover or a silencer cover of, for example, a small watercraft (watercraft). About the tool.

[0002]

2. Description of the Related Art A carburetor (or a silencer disposed beside a carburetor) provided on an engine of a watercraft driven by a water jet propulsion, which is generally called a watercraft, is used to protect from seawater. Cover is attached. Usually, the cover of this cover is fixed (locked) to the cover body side by a fastener, and the cover can be removed by removing the fastener during maintenance. Because the personal watercraft experienced severe vibrations when running, the cover locking mechanism was designed to withstand such adverse conditions.

FIG. 8 is a perspective view showing a related art of such a cover locking mechanism. FIG. 8 shows a locked state in which the lid 5 is locked to the main body 6 by the fastener 70. L-shaped extending portions bent upward and downward are respectively formed on the side surfaces of the lid 5 and the main body 6 so as to face each other (not shown), and a substantially T formed by combining these extending portions is formed. The fastener is locked by sandwiching the fastener 70 between the V-shaped rails.

That is, when the lid 5 is locked, the fastener 7
A stopper 50 for preventing the 0 from coming off is formed, and a lock releasing portion 72 for releasing the lock is integrally formed with the fastener 70. The unlocking portion 72 has a U-shaped plate shape, and a tip portion 72b thereof is bent up and down as shown by an arrow A.

When the lid 5 is locked to the main body 6 by the fastener 70, the fastener 70 is arranged at a position where the rail formed by the above-mentioned extending portion can be sandwiched. Specifically, the end face 72 a of the lock release portion 72 is
And the fastener 70 is slid in the direction of arrow B while the rail is sandwiched. When the fastener 70 is slid, the distal end portion 72b of the release portion 72 bends in the upward direction of the arrow A while coming into contact with the inclined surface 50b of the stock 50, and gets over the stopper 50, as shown in FIG.
The lock state is set as shown in FIG.

Once locked, the stopper 50
The lock release portion 72 is locked by the
Does not come off naturally. In order to remove the fastener 70, the unlocking portion 72 is bent upward or downward as shown by the arrow A to release the locked state by the stopper 50, and then is fastened in the direction opposite to the arrow B direction. Utensil 70
And remove it from the lid 5 and the main body 6.

[0007]

However, in such a lock mechanism according to the prior art, a structure that can withstand adverse conditions such as vibration is preferentially required, so that workability in performing lock or release is poor. was there. More specifically, the position of the fastener 70 must be adjusted each time the lock is performed. For example, it is difficult to bring the lock into a locked state by a blind work, and it is also difficult to release the lock with one hand. In addition, the unlocking portion 72 is structurally weak and has a high possibility of being damaged due to aging or handling. Furthermore, since the fastener 70 comes off the lid 5 and the main body 6, the probability of loss is high.

The present invention solves the above-mentioned problems of the prior art, and does not require a jig (driver or the like) for locking or unlocking, and is capable of performing a blind work, and has excellent workability.
It is an object of the present invention to provide a locking mechanism and its fastener that are structurally strong and do not lose the fastener.

[0009]

According to the present invention, there is provided a lock mechanism for locking a main body having an opening and a lid attached to the opening by a fastener. A first mounting member to which a fastener for locking the lid to the body when the lid is mounted is formed. Further, a second attachment member to be fitted to the first attachment member of the main body is formed on the lid. The first attachment member has a plate-like first extension extending from the side surface of the main body, and a plate-like attachment formed integrally with the extension in a direction substantially perpendicular to the extension. Section. The plate-shaped attachment portion prevents the fastener from falling off, the first rail portion including an upper rail and a lower rail with a partially cutout to which the fastener is freely slidably fitted. And a gap formed with a hole for locking with a fastener. The second mounting member has a plate-shaped second extending portion extending from a side surface of the lid facing the first extending portion, and is bent vertically upward at a tip end of the second extending portion. And a second rail portion to be formed. Second
The fastener is fitted to the partially cut-out portion of the first mounting member such that the rail portion of the second mounting portion is part of the upper rail of the first rail portion of the first mounting member. The lid is locked to the main body by moving to a predetermined position beyond.

Further, according to the present invention, in a lock mechanism for locking a main body having an opening and a lid attached to the opening by a fastener, a first mechanism in which a fastener is attached to the lid. An attachment member is formed, and a second attachment member to be fitted to the first attachment member of the lid is formed on the main body. The first attachment member has a plate-like first extension extending from the side surface of the lid, and a plate-like extension formed integrally with the extension in a direction substantially perpendicular to the extension. An attachment part. The plate-like mounting portion prevents the fastener from falling off, the first rail portion including an upper rail on which the fastener is slidably loosely fitted and a lower rail partially cut away. And a gap formed with a hole for locking with the fastener. The second mounting member has a plate-shaped second extending portion extending from a side surface of the lid facing the first extending portion, and a vertically lower portion on a tip of the second extending portion. And a second rail portion bent and formed. With the second rail portion fitted to the partially cut-away portion of the first mounting member such that the second rail portion is a part of the lower rail of the first rail portion, the fastener is provided in the first mounting member. The cover is locked to the main body by moving to a predetermined position over the second rail.

Further, according to the present invention, in the above-mentioned lock mechanism, the fastener attached to the first attachment member can slide on the upper rail and the lower rail of the first rail portion. The grip portion to be gripped, the protrusion is loosely fitted, a gap that allows a predetermined distance to be moved by the first rail portion so that the fastener can lock the lid body in this state, and the lid body by the fastener. An engagement portion engaged with the gap so that the fastener does not move on the first rail portion when locked.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a lock mechanism according to the present invention; Referring to FIG. 3, there is shown a mounting explanatory view showing an embodiment when the lock mechanism according to the present invention is applied to a carburetor of a personal watercraft. As shown in FIG. 3, a cover 1 of a carburetor cover formed of, for example, resin is fixed to a main body 2 by a resin fastener 3. In the figure, the present invention is applied to the carburetor cover. However, the present invention is not limited to the carburetor cover, but may be applied to a silencer cover next to the carburetor cover.

FIG. 4 is a perspective view showing the main parts of the lid 1 and the main body 2 shown in FIG. 3 which are directly related to the present invention, and here shows a state where the fastener 3 is not attached. ing. 4A shows a state before the lid 1 is attached to the main body 2, and FIG. 4B shows a state when the lid 1 is attached to the main body 2. In order to removably lock the lid 1 to the main body 2, a mounting member 10 is formed on the lid 1, and a mounting member 20 is formed on the main body 2.

The mounting member 10 has a shape obtained by bending a plate into an L-shape, and includes an extending portion 10a extending from the lower side surface of the lid 1 and a distal end of the extending portion 10a. It is formed by a rail portion 10b bent vertically upward. The attachment member 20 is a member to which the fastener 3 (see FIG. 3) is attached so as to be slidable. The attachment member 20 extends from the upper side surface of the main body 2 and is integrated with the extension portion 21. It is formed by a plate-shaped mounting portion 22 to be formed. In this specification, the expression "formed integrally" is not necessarily limited to the case where the member is integrally formed, but also includes the case where the member is integrally mounted with an adhesive or a screw.

The mounting portion 22 is longer than the extending portion 21 in the lateral direction, and its end faces 21a and 22a are aligned at the same position. It is attached to the extension part 21 so as to come to the center. By attaching the attachment portion 22 to the extension portion 21 in this manner, a portion above the extension portion 21 is attached to the rail 23a,
The lower portion is a rail 23b, on which the fastener 3 is slidably fitted. Also, the rail 23a
As shown in FIGS. 4 (a) and 4 (b), a part thereof is cut out in a rectangular shape so as to become a continuous rail when the rail 10b of the mounting member 10 is fitted. I have.

A protrusion 24 is formed on the left side of the notch of the rail 23a. The projection 24 is a projection that is loosely fitted in a gap 34 (see FIGS. 5 to 7) of the fastener 3, which will be described later. It is formed at a position where the member 10 can be attached and detached. On the left side of the projection 24, a tapered portion 25 which is chamfered obliquely is formed. The inclination of the tapered portion 25 is determined by the release lever 36 (see FIG.
) Can be pressed in the horizontal direction. A groove 26 is formed on the back surface of the mounting portion 22 so that a lock portion 36c (see FIGS. 5 to 7) integrally formed with the release lever 36 is engaged when locked.

FIG. 1 is a perspective view showing a state where the fastener 3 is attached to the attachment member 20 shown in FIG. FIG. 1 shows a state in which the fastener 3 is moved to the left (the protrusion 24
4 is in contact with the right side surface). When the lid 1 is attached to the main body 2 and locked with the fastener 3, the mounting member 10 of the lid 1 is attached to the mounting member 20 of the main body 2 as shown by an arrow C.
(The state shown in FIG. 4B), and the locking of the lid 1 is completed by sliding the fastener 3 in the direction of arrow D until it is locked. FIG. 2 shows a state at the time of completion of the lock.
It is sectional drawing which showed -S1 cross section.

As shown in the cross-sectional view of FIG. 2, when completely locked, the locking portion 36c of the fastener 3 enters the groove 26 of the mounting portion 20. Then, when the fastener 3 is slid in the direction of the arrow E in this state, the lock portion 36c is caught on the end face of the groove 26 and cannot be returned to the state of FIG. When returning to the state of FIG. 1, the head 36 a of the release lever 36 is pushed down in the direction of arrow F so that the lock portion 36 c does not catch on the end surface of the groove 26, and then slide in the direction of arrow E. As described above, according to the present embodiment, it is possible to easily and reliably perform locking and unlocking without requiring any jigs and tools.

FIGS. 5 to 7 are drawings showing the shape of the fastener 3 in detail. 5 is a perspective view of the fastener 3, and FIG. 6 is a plan view (a), a front view (b), a bottom view (c), a rear view (d), and a left side view (e) of the fastener 3. , Right side view (f).

FIG. 7 is a sectional view (a) of FIG. 6A taken along line S2-S2, a sectional view of FIG. 6 (a) taken along line S3-S3, and FIG. S4-S4 of (a)
(C) of FIG.

As shown in FIG. 5, the fastener 3 has a cylindrical body 30 having a C-shaped cross section obtained by bending a long side of a plate-like resin inward, and is formed at the center of the body 30. The plurality of slip stoppers 32 and the release lever 36 are integrally formed. An oval void 34 is formed in the center of the non-slip 32. The torso 30 is the mounting member 20 shown in FIG.
Gripper 30a loosely fitted to rails 23a and 23b
And a guide portion 30b for guiding the projection 24 when the fastener 3 is inserted into the mounting member 20.

As shown in FIG. 6C, the grip 30a is formed over the entire body 30 from the tip to the position of the release lever 36. Further, as shown in FIG. 7A, the guide portion 30b is formed to have an inclination such that the height gradually decreases from the tip to the gap 34.

The slip stopper 32 is shown in FIGS.
As shown in FIG. 6D and FIG. 7A, for example, it is formed of six semicircular bands, and the user grips the non-slip 32 and slides the fastener 3. The non-slip 32 allows the slide operation to be easily performed, and allows the fastener 3 to be checked without stress even when performing blind work. 6A and 6B.
As shown in (c), it is an oval hole formed substantially in the center of the body 30.

The release lever 36 is shown in FIGS. 5 and 7 (a).
As shown in FIG. 3, the leaf spring 36b has one end attached to the body 30, a head 36a attached to the other end of the leaf spring 36b, and a lock portion 36c interlocked with the head 36a. ing. The portion of the leaf spring 36b to be attached to the body 30 is formed obliquely in accordance with the slope of the tapered portion 25 (see FIG. 4) at the time of locking.
Further, since the lock portion 36c is formed so as to be inclined upward to the right, the leaf spring 36b is urged upward and mounted by simply sliding the fastener 3 in the locking direction (the direction of arrow D in FIG. 1). It is fitted into the groove 26 of the member 20. Head 3
When 6a is depressed, the leaf spring 36b is urged downward and the engagement between the lock portion 36c and the groove 26 is released.

The window 38 is a window formed in a rectangular shape on the rear side surface. The window 38 allows the user to confirm the engaged state (locked state) of the lock portion 36c, and to easily confirm the cause even when the release lever 36 is caught on something and does not operate well.

As described above in detail, according to the present embodiment, even when the cover 1 and the main body 2 are separated, the fastener 3 is attached to the mounting member 20 of the main body 2 (ASSY). In addition, there is no possibility that the fastener 3 is dropped and lost. Also, while pinching the anti-slip 32 provided with a large knurl, the head 36a of the release lever 36 is held.
Can be pressed, so there is no need for jigs and tools, and there is no need to unlock with both hands as before,
The operation can be performed with one hand, and the blind work can be easily performed. In addition, since there is no structurally weak part as in the prior art, there is no need to use nerves during operation, and handling is simplified. Further, the shape of the fastener itself is aesthetic, and is suitable for marine sports such as a personal watercraft. As described above, according to the present embodiment, it is possible to provide a lock mechanism and its fastener excellent in workability and structure.

The embodiments described above are for explaining the present invention, and the present invention is not particularly limited to the above embodiments. That is, in the present embodiment, the case where the attachment member 10 is attached to the lid 1 and the attachment member 20 is attached to the main body 2 is described, but the attachment member 10 may be attached to the main body 2 and the attachment member 20 may be attached to the lid 1. . In this case, the lid 1 shown in FIGS. 1 and 4 is a main body, and the main body 2 is a lid. In the present embodiment, the present invention is applied to the carburetor cover of the personal watercraft. However, the present invention is not particularly limited to such a use, and can be applied to a wide range of uses as a lock function of a box.

[0028]

As described above, according to the lock mechanism and the fastener of the present invention, the lock mechanism is excellent in operability such as easy operation without the need of a jig or the like when locking or releasing, and is structurally strong. There is no worry about losing the fastener. That is, it is possible to improve the workability of the blinding work and the operability of the unlocking work without lowering the lock function as compared with the related art. In addition, since the shape of the fastener itself is aesthetic, the image of the applied product can be enhanced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a lock mechanism and its fastener according to the present invention.

FIG. 2 is a cross-sectional view showing a partial cross section taken along a line S1-S1 in FIG.

FIG. 3 is an explanatory view of a mounting state when the lock mechanism according to the present invention is applied to a personal watercraft.

FIG. 4 is a perspective view showing main parts of the lid 1 and the main body 2 shown in FIG. 3 which are directly related to the present invention.

FIG. 5 is a perspective view of the fastener shown in FIG. 1;

FIG. 6 is a six-sided view of the fastener shown in FIG. 5;

FIG. 7 shows S2-S2, S3-S3 and S4-S of FIG.
FIG. 4 is a cross-sectional view of each section taken along line 4.

FIG. 8 is a perspective view showing a conventional lock mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lid 2 Main body 3 Fasteners 10, 20 Attaching member 21, 10a Extension part 22 Attachment part 23a, 23b Rail part 24 Projection 25 Taper part 26 Groove 30 Body 30a Grip part 32 Non-slip 34 Air gap 36 Release lever 36a Head Part 36b leaf spring 36c lock part 38 window

Claims (6)

[Claims] 1. A lock mechanism for locking a main body having an opening and a lid attached to the opening with a fastener, wherein the lid is attached to the main body when the lid is attached. A first attachment member to which the fastener to be locked to the main body is attached is formed; a second attachment member to be fitted to the first attachment member of the main body is formed in the lid; The attachment member includes a plate-shaped first extension portion extending from the side surface of the main body, and a plate-like attachment portion formed integrally with the extension portion in a direction substantially perpendicular to the extension portion. The plate-shaped mounting portion includes a first rail portion including an upper rail and a lower rail with a partially cut-out portion into which the fastener is slidably and loosely fitted, and the fastener includes: Drilling holes to prevent falling off and holes for locking with the fasteners The second mounting member has a plate-like second extending portion extending from the side surface of the lid facing the first extending portion, and the second extending member has a second extending portion. A second rail portion bent vertically upward at a tip of the installation portion, wherein the second rail portion is a part of a rail above the first rail portion of the first mounting member. When the fastener is moved to a predetermined position beyond the second rail in a state where it is fitted to the partially cut-out portion of the rail, the lid is locked to the main body. A locking mechanism. 2. A locking mechanism for locking a main body having an opening and a lid attached to the opening with a fastener, wherein the lid has a first attachment member to which the fastener is attached. A second attachment member is formed on the main body to be fitted to a first attachment member of the lid, and the first attachment member is a first plate-shaped member extending from a side surface of the lid. And a plate-like attachment portion formed integrally with the extension portion in a direction substantially perpendicular to the extension portion. A first rail portion, which is composed of an upper rail movably fitted and a lower rail partially notched, a projection for preventing the fastener from falling off, and locking by the fastener. And a gap in which a hole is formed, wherein the second mounting member is provided with the first extension. A plate-like second extension portion extending from the side surface of the lid body facing the second extension portion, and a second rail portion bent and formed vertically downward at a tip of the second extension portion. In a state in which the second rail portion is fitted to a partially cut-out portion of the first mounting member so as to be a part of a lower rail of the first rail portion, A lock mechanism for locking the lid to the main body by moving the fastener to a predetermined position over a second rail. 3. The lock mechanism according to claim 1, wherein the fastener attached to the first attachment member is slidable on an upper rail and a lower rail of the first rail portion. A grip portion to be gripped as described above; and a gap that allows the protrusion to be loosely fitted, and in this state, the first rail portion to move a predetermined distance so that the fastener can lock the lid. A fastener having an engagement portion engaged with the gap so that the fastener does not move on the first rail portion when the lid is locked by the fastener. 4. The fastener according to claim 3, wherein a guide portion having a predetermined inclination is formed on an inner side for guiding the projection when the projection is loosely fitted in the gap. Fastener. 5. The fastener according to claim 3, wherein a non-slip is formed at a center outside the fastener. 6. The lock mechanism according to claim 1, wherein the lock mechanism is applied to a carburetor cover or a silencer cover of a small boat.