JP3738238B2 - Socket wrench handle and its attachment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a socket wrench handle and its attachment, and more particularly to a socket wrench handle and its attachment that prevent the bolt from falling off when the bolt is attached or detached.
[0002]
[Prior art]
In general, a socket wrench used for tightening bolts and nuts can be combined with various sockets corresponding to the bolt head and nut size on a single handle, and is known as a tool with a wide range of applications and high convenience. It has been. The handle and the socket are connected by fitting a convex insertion angle provided on the handle side with a concave receiving hole provided on the socket side, and an accommodation provided on the opposite side of the receiving hole. The bolt head and nut can be accommodated in the hole, and the bolt and nut can be tightened or loosened by rotating the handle.
[0003]
There are several types of handles depending on the purpose. A ratchet handle that has built-in gears and pawls to obtain rotational force by reciprocating movement and can be operated quickly, and a spinner handle that can be used in the vertical or horizontal position by rotating the support at the insertion angle on the head Or a T-shaped slide handle whose insertion angle can be moved to any position of the handle, an offset handle with an insertion angle at the L-shaped tip, a speeder handle with a crank, or a driver's tip There are driver handles with corners. Further, as an attachment connected between the handle and the socket, there are an extension bar for extending the handle for work in a narrowly spaced place, a joint for performing an oblique work by changing the angle, and the like.
[0004]
When attaching and detaching bolts and nuts using a socket wrench combined with the above handle and attachment, these fasteners often fall off. In particular, since work and time are required to recover the dropped fasteners when working at a narrow distance, such a problem is one of the factors that reduce work efficiency. Therefore, a socket wrench that can hold bolts, nuts and the like in the socket has been considered.
[0005]
For example, Japanese Patent Laid-Open No. 9-109045 (hereinafter referred to as “a”) discloses “socket wrench” as “socket wrench with a bolt head accommodating portion of a head bolt provided at the tip of the socket wrench. The invention is characterized in that one or more first magnet fitting holes that penetrate the portion and communicate with the inside of the bolt head accommodating portion are provided, and the first permanent magnet is fitted into the first magnet fitting hole. Is disclosed. In the invention disclosed in this A publication, even a bolt with a dent on the upper surface or a thin bolt head can be securely held in the socket by a magnet provided on the socket, and a washer holding cylinder is additionally provided. This makes it possible to hold spring washers and plain washers.
[0006]
Further, in actual No. 3038838 (hereinafter referred to as “B”), “socket wrench” is provided in a socket fitting hole into which a bolt head or nut of a headed bolt is fitted. A holding spring that presses the outer surface of the bolt head or nut fitted in the hole to prevent the headed bolt or nut from falling off, and a coil spring that biases the head to protrude forward from the tip of the socket. A washer-holding cylinder having a permanent magnet that is detachably hooked to the socket and exerts an attractive force on the inner side when it is externally fitted to the socket and pushed back to the connection side of the extension rod. An invention characterized in that it consists of: In the invention disclosed in this bulletin, it is possible to hold thin bolts and nuts by the action of the holding spring provided in the socket, and hold the washer simultaneously with the bolts by the action of the washer holding cylinder. can do.
[0007]
Japanese Patent Application Laid-Open No. 2001-18175 (hereinafter referred to as “C”) discloses a “socket wrench” having a polygonal head of a fixing bolt on a wrench body provided with a mounting hole for receiving a front end stator of an operation handle. A connecting square hole for inserting a nut screwed to a bolt or a bolt is provided, and a non-circular spring wire is attached to prevent the polygonal head or nut from falling off by being separated from a circumferential groove formed on the peripheral surface of the connecting square hole. The invention is “disclosed”. In the invention disclosed in the publication No. C, the bolt is fixed by a simple method of providing a broken spring wire in the wrench body to prevent the wrench body from falling off.
[0008]
[Problems to be solved by the invention]
However, in the above-described prior art, the invention disclosed in the Japanese Patent Laid-Open No. 1-B, No. 2 and No. 3 can certainly hold the bolts and nuts in the socket, thereby preventing the fasteners from falling off during attachment / detachment. However, since the processing to hold the fastener on the socket side of the socket wrench is performed, there is a problem that each of the many sockets must be processed and the existing one cannot be used. It was. Moreover, the socket has a problem that it is easily lost because it is small.
Moreover, although the holding cylinder for holding the washer and the like is provided in the publications A and B, the outer shape of the socket becomes large due to the attachment of the holding cylinder, so that it may be difficult to work in a narrow space. There is.
[0009]
The present invention has been made in view of such a conventional situation, and a socket wrench handle provided with a function of preventing the drop-off of a bolt at the time of mounting and detaching, and an existing socket and socket are available. It is an object of the present invention to provide an attachment for a socket wrench handle that can use a wrench handle and that has a function of preventing a bolt from falling off during attachment / detachment.
[0010]
In order to achieve the above object, a socket wrench handle according to the first aspect of the present invention includes a convex insertion portion provided to connect with a socket that accommodates a bolt head and a nut, A socket wrench handle having an extended handle portion includes a magnet at an end of the insertion portion, and the size of the magnet is smaller than that of the insertion portion .
The socket wrench handle having the above-described structure has an action of holding the bolt accommodated in the socket by the attractive force of the magnet provided at the end of the insertion portion when the bolt is attached to and detached from the socket.
[0011]
A socket wrench handle according to a second aspect of the present invention is the socket wrench handle according to the first aspect, wherein the magnet is detachable from the insertion portion.
The socket wrench handle having the above-described structure has an effect that the magnet can be easily attached to or removed from the insertion portion in addition to the effect of the invention described in claim 1.
[0012]
The attachment of the socket wrench handle according to the third aspect of the present invention is connected to a convex insertion portion provided for connection with a socket for accommodating a bolt head or a nut, and an insertion portion of the socket wrench handle. Attachment of a socket wrench handle having a receiving part and a connection part for connecting the receiving part and the insertion part, a magnet is provided at the end of the insertion part, and the size of the magnet is inserted. It is smaller than the portion .
The attachment of the socket wrench handle having the above structure has an action of holding the bolt accommodated in the socket by the attractive force of the magnet provided at the end of the attachment when the socket is connected to the handle and the bolt is attached or detached. .
[0013]
The attachment of the socket wrench handle according to the fourth aspect of the present invention is the attachment of the socket wrench handle according to the third aspect, wherein the magnet is detachable from the insertion portion.
The attachment of the socket wrench handle having the above-described structure has an effect that the magnet can be easily attached to or detached from the insertion portion in addition to the effect of the invention described in claim 3.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a socket wrench handle according to the present invention will be described with reference to FIGS. 1 and 2. (Corresponding to Claims 1 and 2)
FIG. 1 is an external view of a ratchet handle and socket according to the present embodiment. In FIG. 1, a ratchet handle 1 according to the present embodiment includes a head 2 and a handle 3, and although not shown, the head 2 includes a ratchet portion having gears and claws. An insertion angle 4 is provided at the approximate center of the ratchet portion, and a removable magnet 5 is provided at the end of the insertion angle 4. The sockets 6a, 6b and 6c have receiving holes 7a, 7b and 7c for receiving bolt heads and nuts, respectively, and these sizes correspond to the sizes of the bolt heads and nuts. . Receiving holes 8a, 8b, 8c corresponding to the insertion angle 4 of the ratchet handle 1 are provided on the opposite side of the accommodation holes 7a, 7b, 7c, and the insertion angle 4 of the ratchet handle 1 is provided respectively. Can be fitted.
[0015]
Next, the structure when the ratchet handle according to the present embodiment is used will be described with reference to FIG. FIG. 2 is a cross-sectional view of the ratchet handle according to the present embodiment when in use. In FIG. 2, a socket 6 is fitted to the ratchet handle 1, and a sphere 10 at the tip of a spring 9 provided in the insertion angle 4 is fixed in a recess of the receiving hole 8. The hexagon bolt 11 is accommodated in the accommodation hole 7 and is held in the socket 6 by the attractive force of the magnet 5.
[0016]
Here, the operation of attaching the hexagon bolt 11 to the screw hole will be described. When the hexagon bolt 11 is accommodated in the accommodation hole 7, the hexagon bolt 11 is held in the socket 6 by the magnet 5, so that it can be transported to a place to be screwed without dropping. When the tip of the hexagonal bolt 11 is brought into contact with the screw hole and the ratchet handle 1 is rotated in the tightening direction, the hexagonal bolt 11 starts to be screwed, and eventually the restraining force from the screw hole is higher than the attractive force of the magnet 5. Since it becomes large, it is separated from the magnet 5 and screwing into the screw hole is completed.
Conversely, when the hexagon bolt 11 is removed from the screw hole, the head of the screwed hexagon bolt 11 is first accommodated in the accommodation hole 7 and the ratchet handle 1 is rotated in the loosening direction. Since the hexagon bolt 11 is removed from the screw hole and the restraining force from the screw hole is gradually reduced, the hexagon bolt 11 is attracted to the magnet 5 and held in the socket 6. Therefore, the hexagon bolt 11 does not fall off when carrying out operations such as transportation in this state.
[0017]
In the present embodiment configured as described above, the hexagonal bolt 11 to be attached or removed can be held in the socket 6 by the attractive force of the magnet 5 provided at the end of the insertion angle 4 of the ratchet handle 1. Therefore, it is possible to prevent the hexagon bolt 11 from falling off during the attaching / detaching operation. And since the magnet 5 is provided in the ratchet handle 1, the socket wrench which has an anti-drop-off function can be provided using the existing socket.
[0018]
Further, the size of the magnet 5 is smaller than the insertion angle 4 and the receiving hole 8, and the outer peripheral length thereof needs to be smaller than the outer peripheral length of the insertion angle 4. The length of the magnet 5 is preferably about the same as the difference between the length of the receiving hole 8 and the length of the insertion angle 4. However, as described above, there are several sizes of sockets corresponding to the same insertion angle, and the length of the receiving hole is different by about several mm. Therefore, an elastic body such as a spring may be sandwiched between the magnet 5 and the insertion angle 4 so as to be stretchable. In the present embodiment, the magnet 5 has a columnar shape, but may have a shape other than a columnar shape such as a quadrangular prism shape.
Furthermore, the magnet 5 may be of any material as long as it is a permanent magnet. As a method for attaching and detaching the magnet 5, a method in which a hook is provided on the magnet 5 and the magnet 5 is hooked on the insertion angle 4, a method in which a screw hole is provided in the insertion angle 4 and a magnet 5 is screwed, etc. are conceivable.
[0019]
In this embodiment, the magnet 5 is provided at the end of the insertion angle 4 of the ratchet handle 1, but is provided at the end of the insertion angle of the spinner handle, T-shaped slide handle, offset handle, speeder handle, and driver handle. May be. However, the offset handle, the speeder handle, and the driver handle do not require the head 2 that is a component of the ratchet handle 1. Moreover, since the magnet 5 is detachable, these various handles can share the magnet 5. Further, when the magnet 5 is removed when not in use, it is possible to prevent the dirt from adhering to the main body by a magnetic material such as iron sand.
[0020]
Next, an embodiment of the socket wrench handle attachment according to the present invention will be described with reference to FIGS. (Corresponding to claims 3 and 4)
FIG. 3 is an external view of the extension bar according to the present embodiment. In FIG. 3, the extension bar 12 in the present embodiment includes an insertion angle 13 for connecting to a socket, a receiving hole 14 for connecting to an insertion angle of a socket wrench handle, and a main body bar 15. Furthermore, a removable magnet 16 is provided at the end of the insertion angle 13.
[0021]
Next, the structure when the extension bar according to the present embodiment is used will be described with reference to FIG. FIG. 4 is a cross-sectional view of the extension bar according to the present embodiment when in use. In FIG. 4, the extension bar 12 is fitted into the socket 6, and the sphere 18 at the tip of the spring 17 provided in the insertion angle 13 of the extension bar 12 is hooked in the recess of the receiving hole 8 of the socket 6 and fixed. Has been. In the same manner as the fitting with the socket 6, the insertion angle 4 of the ratchet handle 1 is fitted into the receiving hole 14 of the extension bar 12 by hooking the sphere 10 at the tip of the spring 9. Yes. The hexagon bolt 11 is accommodated in the accommodation hole 7 and is held in the socket 6 by the attractive force of the magnet 16.
[0022]
The operation of attaching and detaching the hexagon bolt 11 is the same as that of the ratchet handle 1 described above. That is, at the time of mounting, the hexagonal bolt 11 held in the socket 6 by the magnet 16 is conveyed to the screw hole without dropping off, and the ratchet handle 1 is rotated in the tightening direction to be restrained from the screw hole. It is separated from the magnet 16 and screwed into the screw hole.
Further, when removing, when the head of the screwed hexagon bolt 11 is accommodated in the accommodation hole 7 and the ratchet handle 1 is rotated in the loosening direction, the hexagon bolt 11 is removed from the screw hole. The hexagonal bolt 11 will not fall off even if the next operation is performed.
[0023]
In the present embodiment configured as described above, the hexagon bolt 11 to be attached or removed can be held in the socket 6 by providing the magnet 16 at the end of the insertion angle 13 of the extension bar 12. It is possible to prevent the hexagon bolt 11 from falling off during the attaching / detaching operation. In particular, since the extension bar 12 is used for work in a narrow and complicated place or at a remote place, it takes time and labor to recover when the hexagon bolt 11 is dropped, so that the function of preventing the drop does not reduce work efficiency. Great effect in terms.
Moreover, since the magnet 16 is provided on the extension bar 12, a socket wrench having a drop-off preventing function can be provided by using an existing socket and socket wrench handle.
[0024]
About the magnitude | size, the kind, and attachment / detachment method of the magnet 16, it is the same as that of the magnet 5 provided in the ratchet handle 1 demonstrated in FIG. 1 and FIG.
In this embodiment, the magnet 16 is provided on the extension bar 12, but may be provided on an attachment called a joint in which the insertion angle and the receiving hole are connected by a universal joint. Moreover, since the magnet 16 is detachable, it can be shared with joints and various socket wrench handles. Further, when the magnet 16 is removed when not in use, it is possible to prevent adhesion of dirt to the main body due to a magnetic material such as iron sand.
[0025]
【The invention's effect】
As described above, in the socket wrench handle according to claim 1 and claim 2 of the present invention, the bolt is held in the socket by the attracting action of the magnet provided at the end of the insertion portion. It is possible to prevent the bolt from falling off. Moreover, since the magnet is provided in the socket wrench handle, a socket wrench having a function of preventing the bolt from falling off can be provided by using an existing socket.
[0026]
In particular, in the socket wrench handle according to claim 2 of the present invention, since the magnet is detachable, it can be shared with various socket wrench handles. It is possible to prevent the dirt from adhering to the main body.
[0027]
In the attachment of the socket wrench handle according to claim 3 and claim 4, the bolt is held in the socket by the attracting action of the magnet provided at the end of the insertion portion, so that the bolt is prevented from falling off during attachment / detachment. Can do. Moreover, since the magnet is provided in the attachment of the socket wrench handle, a socket wrench having a function of preventing the bolt from falling off can be provided by using the existing socket and socket wrench handle.
[0028]
Particularly, in the attachment of the socket wrench handle according to claim 4 of the present invention, since the magnet can be attached and detached, it can be shared with various attachments. Furthermore, by removing and storing, it is possible to prevent dirt from adhering to the main body such as iron sand.
[Brief description of the drawings]
FIG. 1 is an external view of a ratchet handle and a socket according to the present embodiment.
FIG. 2 is a cross-sectional view of the ratchet handle according to the present embodiment when in use.
FIG. 3 is an external view of an extension bar according to the present embodiment.
FIG. 4 is a cross-sectional view of the extension bar according to the present embodiment when in use.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Ratchet handle 2 ... Head 3 ... Handle 4 ... Insertion angle 5 ... Magnet 6, 6a, 6b, 6c ... Socket 7, 7a, 7b, 7c ... Accommodating hole 8, 8a, 8b, 8c ... Receiving hole 9 ... Spring 10 ... Sphere 11 ... Hexagonal bolt 12 ... Extension bar 13 ... Insertion angle 14 ... Reception hole 15 ... Body bar 16 ... Magnet 17 ... Spring 18 ... Sphere

Claims (4)

In a socket wrench handle having a convex insertion portion provided for connection with a socket for accommodating a bolt head and a nut, and a handle portion extending to the insertion portion, an end of the insertion portion A socket wrench handle characterized in that the part is provided with a magnet, and the size of the magnet is smaller than that of the insertion part .   The socket wrench handle according to claim 1, wherein the magnet is detachable from the insertion portion. A convex insertion portion provided for connecting to a socket for accommodating a bolt head and a nut, a receiving portion connected to an insertion portion of a socket wrench handle, and the receiving portion and the inserting portion A socket wrench handle attachment having a connection portion for connecting a socket wrench, wherein the end portion of the insertion portion includes a magnet, and the size of the magnet is smaller than that of the insertion portion. Handle attachment.   The socket wrench handle attachment according to claim 3, wherein the magnet is detachable from the insertion portion.

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