JPH057391Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a padlock that can be widely used for locking the closed end of a slide fastener, as well as for locking various storage containers and storage cabinets.

(Prior art) A padlock consists of a lock body and a latch rod connected to the lock body having an inverted U-shaped hook part, and is similar to other types of locks such as ale locks, latch locks, and cylinder locks. Unlike conventional locks, its structure is relatively simple and there is no need to install it directly into the locking area, so it can be installed and locked in any location, making it the most common type of lock. It is widely used as

(Problem that the invention aims to solve) However, when locking a conventional padlock, the hook part of the latch rod is rotated from the side to properly match the lock opening on the lock body, and then the latch rod is rotated from the side. Many have a structure in which the tip of the lock is pushed into the lock from above, and a hook-shaped notch provided at the tip of the key is engaged with a locking body that is linked to the turning operation of the key using the force of a spring. . Therefore, if this type of padlock is used outdoors, rainwater may seep into the interior through the lock opening, and other parts of the lock, including the latch rod, may be exposed to wind and rain, causing rust. The rod and other parts often become stuck, and those with built-in springs may lose their locking function within a short period of time. Additionally, padlocks are generally large due to their structure.
It is normal to store it somewhere else other than when it is locked, or to carry it in a pocket etc.
It is easy to use something that is as small as possible.

The present invention was devised to deal with the above-mentioned circumstances, and its purpose is to reduce the number of parts that make up the lock, making it easy to assemble and process, as well as improving durability. To provide at low cost a small and simple padlock which is excellent, very easy to handle during use, and convenient to carry.

(Means for Solving the Problems) In order to achieve the above object, the simple padlock of the present invention has a hook part that projects upwardly bent in an inverted U-shape inside the lock body made of elastic synthetic resin. The latch rod and the lock barrel that faces the tip of the hook part when locked are erected in parallel and fixed so that they can rotate only in the horizontal direction. A peripheral wall surrounding the cylinder is expanded to provide an irregularly shaped fitting part that elastically changes the phase by 90 degrees, and the hook end of the locking rod is received from the side at the upper end of the lock cylinder to change the direction by 90 degrees. It is characterized by having a concave groove for locking, and a key hole in the lower end of the lock barrel to fit a key that rotates the lock barrel from the outside.

(Example) Hereinafter, the structure of the padlock according to the present invention and its operation will be explained in detail with reference to the drawings of the example. In the case of this invention, the padlock L is made of elastic synthetic resin such as polyester or urethane. A lock body 1 to be molded, and a locking rod 2 and a lock barrel 3 that are embedded by insert molding during molding of the lock body 1 and fixed inside the lock body 1 so as to be rotatable only in the horizontal direction. It is composed of

Of these, the latch rod 2 has a hook portion 4 formed by bending the portion that protrudes upward from the lock body 1 into an inverted U shape, and the tip of the hook portion 4 is thinly shaved into a truncated conical shape. The base part embedded inside the main body 1 has an enlarged part 5 whose diameter is increased to prevent the hanging rod 2 from escaping upward, and the cross-sectional shape of the middle part of the rod is approximately the same as shown in FIG. 4. The irregularly shaped fitting part 6 is formed in a quadrangular shape, and the diagonal parts of the four corners are shaved off in an arc shape. The fitting part 6 is the hanging rod 2
It plays the role of elastically restraining the rotation of and regulating its stopping position to a predetermined phase.

Further, the lock cylinder 3 is attached to the latch rod 2 when the lock is locked.
It stands parallel to the locking rod 2 at a position facing the tip of the hook portion 4 of the lock body 1 and is rotatably fixed inside the lock body 1. 4
A recessed groove 7 that receives the tip from the side and locks it by turning it 90 degrees, and a recessed hole 8 in the center of the groove for fitting and removing the tip of the hook part 4 in a snap manner. A keyhole 10 is provided at the lower end of the lock barrel 3 and is fitted with a key 9 that rotates the lock barrel 3 when opening and closing the lock. Further, on the outer periphery of the middle part of the lock cylinder 3, there is an enlarged part 11 having a larger diameter, and above this enlarged part 11, a section of a generally regular quadrilateral is formed as shown in FIG. An irregularly shaped fitting part 12 is provided in which the part is shaved off in an arc shape, and when the key 9 is inserted into the keyhole 10 from below and the lock barrel 3 is rotated in the horizontal direction, it is similar to the locking rod 2 described above. The rotation of the lock barrel 3 is elastically restrained by the irregularly shaped fitting portion 12, and its stopping position is regulated to a predetermined phase. Since the padlock of the present invention has the above structure, when the padlock L is locked, the concave groove 7 at the upper end of the lock barrel 3 is parallel to the direction of the hook part 4 of the locking rod 2, as shown by the solid line in FIG. The distal end of the hook portion 4 is prevented from rotating sideways by both side walls 7a and 7b of the groove 7 as shown by the chain line, and the distal end portion of the hook portion 4 is prevented from rotating laterally as shown by the chain line. The base of the locking rod 2 and the lock barrel 3
Since the rotation of the polygonal odd-shaped fitting parts 6, 12 provided at the intermediate parts of the respective parts is restricted by the surrounding walls 1a, 1b, the lock barrel 3 can be opened by the key operation described below. The hook portion 4 of the locking rod 2 will not come off the engagement portion of the lock barrel 3 unless it is rotated to a predetermined position.

To unlock this padlock L, insert the key 9 from below into the keyhole 10 at the lower end of the lock barrel 3 as shown in FIG.
If the lock barrel 3 is rotated by twisting the key 9 clockwise or counterclockwise, there will be slight rotational resistance at the beginning of the rotation, but this will be surrounded by the irregularly shaped fitting portion 12 of the lock barrel 3. The lock barrel 3 is rotated while elastically expanding the peripheral wall 1b of the lock body 1, and when the lock barrel 3 rotates approximately 90 degrees, the irregularly shaped fitting part 12 elastically slides into the next fitting position and stops. The concave groove 7 at the upper end of the lock barrel 3 changes its direction in the direction shown by the dotted line in Figure 5, allowing the hook portion 4 of the locking rod 2 to escape to the side, so that the hook portion of the locking rod 2 can be removed with a fingertip. If the hook 4 is rotated counterclockwise or clockwise while gripping the lever 4, the hook portion 4 of the locking rod 2 can be rotated along the groove 7 as shown by the chain line and removed. In addition, when locking the padlock L, rotate the hook part 4 of the latch rod 2 to match the groove 7 at the upper end of the lock barrel 3 by completely reversing the procedure described above, and then Insert the key 9 into the keyhole 10 of the
By rotating it 90 degrees, you can lock it with a simple operation.

In addition, in the padlock L of this embodiment, the irregularly shaped fitting part 12 provided on the outer periphery of the middle part of the lock barrel 3 is approximately square.
Although it is formed to have a rectangular cross section, it may be formed into a regular octagon so that the lock cylinder 3 can be rotated in two steps, or in some cases, it may be formed into a polygon with star-shaped unevenness. Furthermore, when the hook portion 4 of the locking rod 2 is introduced into the groove 7 at the time of locking, the recessed hole 8 bored in the center of the groove 7 is connected to the tip surface of the hook portion 4. It engages in a snap-type manner and serves to stop the hanging rod 2 in the correct position, so the hanging rod 2
It is not necessarily necessary to provide the irregularly shaped fitting part 6 at the base of the holder, and it is also possible to omit this.

(Effects of the invention) As described above, the padlock of the invention has a locking rod with a hook and a lock barrel for locking and fixing the rod in parallel inside the lock body made of elastic synthetic resin. It is installed vertically and skillfully utilizes the elasticity of the lock body to regulate the rotation of the lock barrel and its stopping position, and to open and close the lock, it requires vertical sliding of the latch rod, a separately incorporated spring member, and complicated Since the lock can be opened and closed simply by rotating the locking rod and the lock barrel without using a locking mechanism, the number of parts constituting the lock is small and the structure is simple and compact. In addition, manufacturing and assembly can be easily performed by insert molding, so mass production is possible at low cost. In addition, the interior of the lock body has excellent watertightness, and there is no need to incorporate a separate spring member, so there is no risk of deterioration in lock operability due to rusting, etc., and the handling operation is always smooth. Together with this, it always exhibits a stable effect of use over a long period of time.

[Brief explanation of the drawing]

Figure 1 is a central vertical sectional view showing an example of a specific implementation structure of the padlock according to the present invention, and Figure 2 is Figure 1A.
-A sectional view taken along line A, FIG. 3 is a bottom view, FIG. 4 is a sectional view taken along line B-B in FIG. . L...padlock, 1...lock body, 1a, 1b...
Peripheral wall, 2... Latching rod, 3... Lock barrel, 4... Hook portion, 7... Concave groove, 6, 12... Irregular fitting portion, 9...
...Key, 10...Keyhole.

Claims (1)

[Scope of utility model registration request] Inside the lock body 1 made of elastic synthetic resin, there is a locking rod 2 with an upwardly protruding hook portion 4 bent in an inverted U shape, and a lock barrel that faces the tip of the hook portion 4 when the lock is locked. 3 are erected in parallel and fixed rotatably only in the horizontal direction, and among these, a peripheral wall 1b surrounding at least the middle part of the lock cylinder 3 is provided.
An irregularly shaped fitting part 12 is provided which expands and elastically changes the phase by 90 degrees, and the tip of the hook part 4 of the locking rod 2 is received from the side at the upper end of the lock cylinder 3 and the direction is changed by 90 degrees. A padlock characterized in that a recessed groove 7 is cut into the padlock, and a key hole 10 is bored in the lower end of the lock barrel 3 to fit a key 9 that rotates the lock barrel from the outside.