JP2000024948A - Marker for socket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily install a marker for a socket without applying special work to the socket by eliminating marking failure by the degradation of a stamp and a trickling phenomenon by excessive filling of ink in a fastening confirming marker enclosed in the socket. SOLUTION: A first seat plate 13 of a holder 11 is fitted in an engaging hole 8 of a socket 1 so that this is held by a head 7 of a wrench 6 so as not to slip out. A second seat plate 14 freely movable in a communicating hole 9 is installed on a spring 15 fixed to the first seat plate 13. A stamp 12 is detachably installed on the second seat plate 14 by surface fasteners 19, 20. The stamp 12 can be mounted/demounted from a holder 5 by gripping/holding a baseplate 16 by a cylindrical jig 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marker built in a socket of a wrench for mainly visually confirming that a bolt has been fastened.

[0002]

2. Description of the Related Art Generally, a marker built in a socket of a wrench is provided with a sponge-like stamp impregnated with ink (or paint) inside the socket.
The stamp ink is applied to the bolt head. The simplest of these is a structure in which the stamp is simply stuffed into the hollow part of the socket.However, there are problems such as the stamp coming off or deteriorating during use, and it is not sufficient. Did not.

Accordingly, various improvements have been proposed for the mounting structure of the stamp. For example, Japanese Unexamined Utility Model Publication No. Sho 59-124073 discloses that a stamp is built in a cylindrical case, and the case is fixed to the inside of the socket with screws. Also, the stamp is urged by a spring toward the outside of the socket (for example, Japanese Patent Application Laid-Open No. 52-73781).
JP-A-55-70576, JP-A-63-221982, JP-A-9-254045, etc.).

[0004]

By the way, while the marker is used, the stamp ink gradually runs out. Conventionally, in this regard, a stamp in a socket is impregnated with ink by dripping ink from a container, or an ink tank is integrally attached to a socket as described in, for example, JP-A-62-42873. are doing.

However, since it is difficult to adjust the amount of ink by means of dropping ink from a container, there has been a problem that the ink frequently drops from the stamp due to excessive injection. Also, the stamp deteriorates as you use it, but it is difficult to confirm the degree of this deterioration,
It was also a problem that the exchange of stamps was troublesome.
If the stamp deteriorates, the ink absorbency will decrease.
It also makes it easier to drop.)

On the other hand, the structure in which the ink tank is provided in the socket has the advantage that the bolt can be marked with a stable density, but has the problem that the structure becomes complicated and the wrench becomes large. Is difficult to apply. Also, in this case, it was difficult to confirm that the deterioration of the stamp was difficult or to replace the stamp.

The present invention has been made to improve these situations.

[0008]

According to the present invention, a fastening confirmation marker built into a hollow socket having a square bolt fitting hole is provided in a state in which the socket cannot be removed from the bolt fitting hole. And a stamp that is detachably attached to the holder by inserting and removing the holder from the bolt fitting hole. "

In this case, the specific form and mounting structure of the holder are not limited. For example, the holder may be formed in a block shape and fixed to the socket with screws or the like. Alternatively, it may be configured by two seat plates and one spring, and simply fitted into the hollow portion of the socket. Further, the socket only needs to be able to contain ink (or paint), and its material and shape are not limited.

Means for detachably attaching the socket to the holder include, for example, a hook-and-loop fastener, snap engagement using claws formed on the socket and / or the holder, and further using a magnet. May be. Since the stamp is built into the socket, it can be easily attached and detached by using a jig that can be grasped and inserted into and removed from the socket as exemplified in the embodiment.

Although a socket wrench with a marker is generally used to tighten a bolt, it can also be used to tighten a nut (in this case, it is generally marked on the end face of a shaft of the bolt).

[0012]

In the present invention, when the ink on the stamp is reduced by use and the mark becomes thinner than the limit, ink can be injected into the stamp, but the ink can be injected with the stamp removed (holder It is also possible to inject the ink in a state in which the ink is attached to the ink cartridge), and it is easy to adjust the injection amount. As a result, it is possible to prevent or suppress ink dropping.

When the stamp is deteriorated or damaged, the used stamp may be removed from the holder and replaced with a new one. However, since the stamp is a detachable cartridge type, replacement is easy. In addition, it is possible to easily confirm the state of deterioration or breakage of the stamp. Therefore, an appropriate marking state can always be ensured. Also, it is economical because only the stamp needs to be exchanged.
Further, since no ink tank is required, the size of the socket is not increased.

In the present invention, as described above, it is economical to inject the ink several times until the stamp is deteriorated and use it repeatedly. However, even if the ink becomes thin, it can be replaced with a new one by a completely disposable type. good. When the marker is configured as in claim 2, the marker is fitted into the engagement hole of the socket with the stamp first, and then the wrench head is fitted into the engagement hole of the socket. The marker will not be pulled out inside, so it is very easy to attach and remove the marker, and there is no need to perform special processing on the socket, so it can be applied to existing sockets as it is There is an advantage that it can be done.

[0015]

Next, embodiments of the present invention will be described with reference to the drawings. (1) First Embodiment (FIGS. 1 to 5) FIGS. 1 to 5 show a first embodiment of the present invention, in which the socket 1 and the marker 2 are configured in FIG. The form of a part is shown. In FIG. 1, (A) is a separated front view, (B) is a BB view of (A), (C) is a CC view of (A), (D) is a DD view of (A), (E) () Is an EE view of (A).

[0016] Structure of wrench and socket The socket 1 is formed in a cylindrical shape, and one end thereof has
A hexagonal bolt fitting hole 5 that fits into the head 4 of the bolt 3 is formed, and a circular engaging hole 8 into which a spherical head 7 of the wrench 6 fits is formed at the other end. The bolt fitting hole 5 and the engaging hole 8 communicate with each other via a communication hole 9 having a smaller diameter than the bolt fitting hole 5 and the engaging hole 8. The bolt fitting hole 5 may have a dodecagonal shape. If the head 4 of the bolt 3 is not hexagonal, the bolt fitting hole 5 may have a shape that fits into the head 4 of the bolt 3.

The handle of the wrench 6 is formed in a rod shape, and the tip of the head 7 is rotatably attached to the socket 1 by a pin 10. The wrench 6 is rotationally driven by a power tool (not shown) such as an electric type or a pneumatic type. In this case, as shown in FIG. 1 (A), the pin hole of the head 7 is formed in a shape having a wide width from the axis to the outside, so that the axis of the wrench 6 and the axis of the socket 1 Do not match, and both can be rotated.

[0018] Marker Structure The marker 2 includes a holder 11 and a stamp 12, and the holder 11 includes a first and a second pair of seat plates 13, 14.
And a conical spring 15 disposed between the two seat plates 13 and 14. The first seat plate 13 of the holder 11 has a diameter larger than the inner diameter of the communication hole 9 and is movably fitted in the engagement hole 8. The second seat plate 14 is large enough to freely move in the communication hole 9, and the spring 15 is fixed to both seat plates 13 and 14. Spring
The fixing means 15 is fixed by pressing and fixing the nails (not shown) cut and raised on the seat plates 13 and 14, but may be welding or the like.

The materials of the seat plates 13, 14 and the spring 15 are not limited, and may be made of metal or synthetic resin. The entire holder 11 may be integrally formed of a synthetic resin. Also,
The first seat plate 13 is not always necessary. The stamp 12 includes a base plate 16 made of synthetic resin and an ink-impregnated mat 17, and the base plate 16 is set to the same size as the second seat plate 14. On the other hand, the ink impregnated mat 17 is made of a soft porous material such as sponge, and is fixed to the base plate 16 by an appropriate means such as adhesion. As shown in an enlarged scale in FIG. 1 (F), an annular groove 18 having a V-shaped cross section is formed on the outer peripheral surface of the base plate 16 of the stamp 12.

The base plate 16 and the ink-impregnated mat 17 of the stamp 12 need only be large enough to enter the communication hole 9 of the socket 1, and need not necessarily be the same size as the second seat plate 14. A pair of hook-and-loop fasteners 19 and 20 that can be joined and peeled off are fixed to the second seat plate 14 of the holder 11 and the base plate 16 of the stamp 12 by appropriate means such as bonding. . FIG. 2 shows a use state of the socket wrench to which the marker 2 is attached, in which the first seat plate 13 of the holder 11 is engaged with the engagement hole 8.
With the ink impregnated on stamp 12
17 is located near the opening surface of the bolt fitting hole 5.

When the socket 1 is fitted into the head 4 of the bolt 3, the ink impregnated mat 17 of the stamp 12 is
, The entire marker 2 is pushed toward the head 7 of the wrench 6, and the ink-impregnated mat 17 of the stamp 12 is elastically pressed against the head 4 of the bolt 3 by the spring 15, whereby A mark M for fastening confirmation as shown in FIG. 3 is provided.

Needless to say, if the thickness of the head 4 differs according to the standard of the bolt 3, the difference in the thickness is caused by the spring 15
Is absorbed by the difference in the amount of shrinkage. . Detachment of stamp Fig. 4 shows the method of detaching the stamp 12.
12 can be easily attached and detached using a jig 21. That is, the jig 21 has an outer diameter and an inner diameter that can be inserted into the bolt fitting hole 5 of the socket 1 and can be fitted into the stamp 12, and a partition plate 22 is provided at an intermediate portion along the axial direction.
A plurality of (four in the embodiment) long grooves 23 are formed on both sides of the partition plate 22 respectively.

An annular projection 24 is formed on the inner surface of one end 21a of the jig 21 so as to fit into the annular groove 18 of the base plate 16 of the stamp 12 (the projection 24 need not be annular). . In this case, the dimension L from one end surface of the jig 21 to the annular projection 24 is set to the same dimension as the dimension from the bottom surface of the bolt fitting hole 5 in the socket 1 to the base plate 16 of the stamp 12.

As shown in FIG. 4A, when the jig 21 is pinched at the other end 21b, the jig 21 is deformed by the principle of leverage so that the one end 21a is widened. Therefore, when the stamp 12 is to be removed, the annular projection 24 is inserted into the socket 1 with the one end 21a of the jig 21 expanded as shown in FIG. Then, the hook-and-loop fasteners 19 and 20 may be peeled off by releasing the deformation of the jig 21 and pulling it outward as shown in FIG. 4 (C).

As described above, if the position of the annular projection 24 is adjusted to the position of the annular groove 18 of the stamp 12, the annular projection 24 will be set when the jig 21 is fully inserted into the bolt fitting hole 5. The engagement with the annular groove 18 has an advantage that the positioning of the jig 21 is simplified. When attaching the stamp 12, the reverse procedure of the removal described above may be used, but as shown in FIG.
The stamp 12 may be fitted into the other end of the jig 21 and then inserted into the bolt fitting hole 5 of the socket 1 in that state. In this case, since it is not necessary to deform the jig 21 each time,
Installation is simplified.

As shown by the alternate long and short dash line in FIGS. 4A and 4D, the stamp 12 is provided on the inner peripheral surface of the other end of the jig 21 with a partition plate.
By forming a projection (or a thick portion) 25 for preventing displacement in the direction of 22, the double-sided fasteners 19 and 20 can be securely joined. . Others The means for securely engaging the jig 21 with the stamp 12 when removing the stamp 12 is not limited to fitting the annular groove 18 and the annular projection 24, for example, an inward projection on one end of the jig 21. This protrusion is hooked on the outer peripheral edge of the base plate 16 of the stamp 12 or a jig 21 is formed.
An annular groove may be formed on the inner surface of one end of the base plate, and the annular groove may be fitted to the outer peripheral edge of the base plate 16.

[0027] Another Usage Example (FIG. 5) FIG. 5 shows another example of the socket wrench 27. That is, the wrench 27 in this example has a square head 28,
For this reason, the engagement hole 8 of the socket 1 is also formed in a square shape. In order to prevent the socket 1 from coming off, the head 28 has a ball 29 urged outward by a spring (not shown). The direction of applying torque to head 28 is wrench 27
It can be switched freely by a ratchet mechanism built in.
Marker 2 is substantially the same as described above.

In the case of this use example, since the first seat plate 13 is almost fixed, the stamp 12
, The spring 15 expands and contracts greatly. In this case, if the spring 15 is straight, if it is compressed to a certain extent, the wire rods overlap and cannot be further compressed, so that the moving stroke of the stamp 12 cannot be increased, but as in the present embodiment. When the conical spring 15 is used, the wire can be compressed and contracted to a flat state without overlapping,
12 movement strokes can be increased. Therefore, FIG.
~ Wrench 27 as shown in Fig. 4 or wrench as shown in Fig. 5
27 can be used without any problems.

(2) Second Embodiment (FIG. 6) FIG. 6 shows a second embodiment utilizing the elastic deformation of the nail as a means for attaching and detaching the stamp 12. Among them, (A) shows the second plate of the holder 11 on the base plate 16 of the stamp 12.
A plurality of claws 30 are integrally provided so as to surround the seat plate 14, and each of the claws 30 is provided.
Is disengaged from the outer peripheral edge of the second seat plate 14 against its elasticity. The base plate 16 is made of a synthetic resin.

In the example shown in FIG. 3B, the second seat plate 14
On the other hand, the base plate 16 of the stamp 12 is integrally provided with a plurality of claws 32 which are fitted into and disengaged from the locking holes 31 of the second seat plate 14 by deformation against elasticity. In addition, while each of the claws 32 is provided with a radially outward projection 33, an annular groove 34 that fits with the projection 33 of the claw 32 is formed on the inner surface of the distal end portion of the tweezer-shaped or scissor-shaped expanding jig 21. are doing. Therefore, the jig
The stamp 12 can be easily attached / detached by grasping the projection 33 of each claw 32 with 21 and causing each claw 32 to fall down to the inside of the radius to be deformed.

(3) Others The present invention can be further embodied in various forms. For example, a magnet or an adhesive tape may be used as a means for engaging and disengaging the stamp. Further, the stamp may be screwed into the holder. Further, the stamp is sufficient as long as it can attach ink to the bolt, and is not limited to a stamp using a sponge-like mat.

When the stamp is urged toward the outside of the socket by a spring, other spring means such as a leaf spring may be used instead of the coil spring, or an elastic body such as rubber may be used. Is also good. Further, the marker of the present invention can be applied not only to a manual wrench but also to a power wrench such as a pneumatic type or an electric type. It should be noted that fitting the marker through the engagement hole of the socket and holding it immovably with the head of the wrench can also be applied to a marker without a detachable stamp.

[Brief description of the drawings]

FIG. 1 is an exploded view of a first embodiment.

FIG. 2 is a diagram showing a use state.

FIG. 3 is a plan view of a marked bolt.

FIG. 4 is a diagram showing attachment and detachment of a stamp.

FIG. 5 is a diagram showing another usage pattern.

FIG. 6 is a diagram showing a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Socket 2 Marker 4 Bolt head 6 Wrench 5 Bolt fitting hole 7,28 Wrench head 8 Engagement hole 9 Communication hole 11 Holder 12 Stamp 13,14 Seat plate 15 Spring 16 Base plate 17 Mat 21 Ingredient

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kazutoshi Hamasaki 1-3-5 Shinsenri-Higashicho, Toyonaka-shi, Osaka Japan Power Fastening Co., Ltd. No. 5-3 F-term in Nippon Power Fastening Co., Ltd. (reference) 3C038 AA01 AA03 AA04 BB03 BC01 BC02 CC08 DA04 DA07 EA03 EA05 EA06

Claims (2)

[Claims] 1. A fastening confirmation marker built in a hollow socket having a rectangular bolt fitting hole, comprising: a holder held in the socket so as to be unable to be removed from the bolt fitting hole. And a stamp for detachably attaching to the holder by inserting and removing from a bolt fitting hole. 2. The wrench according to claim 1, wherein the socket is formed in a cylindrical shape with one end and the other end opened, the bolt fitting hole is opened from one end surface, and a wrench head is attached. A mating hole is opened from the other end surface, and the bolt fitting hole and the engaging hole are communicated with each other through a communicating hole having a diameter smaller than at least the engaging hole. The holder is fitted into the engaging hole of the socket. A first seat plate, a spring disposed in a communication hole of the socket,
A second seat plate disposed at a position opposite to the base plate with the spring interposed therebetween, wherein the spring is fixed to both seat plates and the second seat plate is freely inserted into the communication hole of the socket. On the other hand, the stamp comprises a base plate detachably attached to the second seat plate via engaging and disengaging means such as a hook-and-loop fastener, and an ink-impregnable mat fixed to the base plate. Marker for socket.