JP4486905B2 - Socket wrench - Google Patents

Description

  The present invention relates to a socket wrench that can adsorb steel materials such as nuts and bolts by a magnet built in a magnet holder in the socket wrench, and can prevent the steel materials such as nuts and bolts from falling off.

The socket wrench is for, for example, inserting a bolt into a housing provided at the tip of the socket wrench and rotating the socket wrench to screw the bolt or the like into the screw hole.
As such a socket wrench, a magnet fitting hole was provided in the housing provided at the tip of the socket wrench, and permanent rubble was fitted into the magnet fitting hole to prevent the copper material such as bolts from falling off. There is a thing (patent document 1).
Japanese Patent Laid-Open No. 9-109045

  However, a socket wrench with a magnet fitting hole in the housing provided at the tip of the socket wrench and a permanent magnet fitted into this magnet fitting hole has a bolt head or nut with a large thickness in the housing. When inserted, the lower end portion of the bolt head is not completely inserted into the bolt head receiving portion, and the permanent magnet inserted into the magnet fitting hole is not connected to the bolt inserted into the receiving portion. Since the bolt is provided perpendicular to the side surface and the bolt easily moves laterally with respect to the magnet, there is a problem that the bolt is easily dropped from the bolt head accommodating portion, and the operability of the socket wrench is not good.

  Furthermore, in a socket wrench where a hollow portion is not formed on the heel side of the accommodating portion provided at the tip of the socket wrench, when the bolt is screwed into the nut, the tip of the bolt protrudes from the nut. Accordingly, there is a problem that the nut is detached from the housing portion because the bolt tip portion presses the heel side end surface of the housing portion.

  Therefore, the present invention is a socket wrench that has a good operability because the bolt is not easily dropped no matter what height the bolt is used, and when the bolt is screwed into the nut, the nut is not detached from the accommodating portion. The purpose is to provide.

  The inventors of the present invention have provided an elastic body in the vertical direction with respect to the axial direction of the socket wrench and set the depth of the bolt head accommodating portion to the maximum thickness of the bolt head or nut, so that the bolt or the like having a collar portion can be attached to the socket wrench. When the magnet holder is inserted into the socket, the magnet holder moves in the direction of the bolt or the like by the adsorption of the magnet incorporated in the socket wrench while the collar is in contact with the tip of the socket wrench. In order to adsorb and hold the nut, it has been found that no gap is formed between the flange portion and the tip of the socket wrench, which makes it difficult for bolts and the like to be detached from the socket wrench, thereby improving the operability of the socket wrench.

  Also, among the elastic bodies provided above and below, when the bolt is screwed into the nut by the elastic body between the rear end portion of the magnet holder and the end face of the hollow hole provided on the flange side of the housing portion, As the tip of the bolt screw protrudes from the nut, the magnet holder absorbs the movement of the bolt screw, and the tip of the bolt screw does not press the heel side end surface of the hollow hole formed on the heel side of the housing part. The inventors have found that the container does not come off and have completed the present invention.

Therefore, the present invention is a socket wrench having a housing part for housing the bolt head provided at the tip of the socket wrench and a magnet built-in magnet holder provided on the back side of the housing part.
The magnet holder is held by a pair of elastic bodies provided so as to extend in the axial direction of the socket wrench, and the point at which the force of the elastic bodies balances is the origin position of the magnet holder, while the bolts to the housing part When inserting the head, etc., the bolt etc. are attracted to the magnet built in the magnet holder, and the magnet holder can slide in the axial direction. When the bolt head, etc. is taken out from the housing part, the magnet holder Can be returned to the origin position.
According to the present invention, since the magnet holder is held by the elastic body provided in two upper and lower stages, the magnet holder can be operated even if the magnet's attractive force is small. Also, when a nut or bolt is inserted into the housing and the magnet holder is pushed into the socket wrench side, or when the magnet holder is called into the socket wrench tip side by the magnet built into the magnet holder. Can be used. Furthermore, it can also be used when a bolt is screwed into the nut and the tip of the bolt screw protrudes from the nut.

  The socket wrench according to the present invention is characterized in that the magnet holder can be moved backward in the axial direction as the bolt screw projects from the nut when the bolt screw is screwed into the nut.

Further, the present invention relates to a socket wrench having a housing part for housing a bolt head provided at the tip of the socket wrench and a magnet built-in magnet holder provided on the back side of the housing part.
The magnet holder is held by an elastic body, and the point where the elastic body is in an unloaded state is the origin position of the magnet holder, while the bolt built in the housing portion is inserted into the magnet built in the magnet holder. Bolts or the like are attracted, the magnet holder is slidable in the axial direction, and the magnet holder can be returned to the origin position when the bolt head is taken out from the accommodating portion. .

By adopting such a configuration, when the origin position of the magnet holder is set to the position of the substantially maximum thickness of the bolt head, when a flanged bolt or nut is inserted into the housing portion, The magnet holder moves to the socket wrench tip side by suction of the magnet built in the magnet holder and the bolt etc. while the provided collar part is in contact with the tip of the socket wrench housing part, and the bolt and nut etc. are sucked and held. Therefore, no gap is formed between the flange portion and the end portion of the socket wrench, and the operability is improved. Also, when the origin position of the magnet holder is set to a position closer to the tip of the socket wrench than the position of the bolt head's approximate maximum thickness, the socket wrench is used to attract and hold the bolt etc. with the magnet built in the magnet holder. When the bolt is pressed against the bolt and screwed into the screw hole, the magnet holder is pressed by the bolt head and moves to the rear end side of the socket wrench.
Here, that the elastic body is in an unloaded state means that the magnet holder is fixed to the socket wrench by the elastic body without receiving a magnetic force, and the elastic body is not loaded.

  According to the present invention, when the origin position of the magnet holder is at the position of the substantially maximum thickness of the bolt, and the bolt head thinner than the maximum thickness is inserted into the accommodating portion, the magnet holder is inserted into the socket wrench by the magnet built in the magnet holder. The magnet holder can be moved to the distal end side, and the magnet holder can be returned to the origin position when a bolt head or the like is taken out from the housing portion.

  Further, according to the present invention, the magnet holder has a hollow portion in the axial direction of the magnet holder, a nut is inserted into the housing portion, a bolt screw is screwed into the nut, and the bolt screw protrudes from the nut. It is characterized by being able to enter the cavity of the magnet holder.

  With such a configuration, even if the bolt screw is screwed into the nut and the bolt screw protrudes from the nut, the bolt screw enters the cavity of the magnet holder, so that the tip of the bolt screw presses the socket wrench. Therefore, the nut does not come off from the accommodating portion.

  The present invention is characterized in that the elastic body is a contractible coil spring formed so as to cover the outer periphery of the magnet holder.

  Since the spring is fixed between the inner wall of the hollow hole and the outer surface of the magnet holder, the detachment of the spring can be prevented even if the magnet holder is slid.

  According to the socket wrench according to the present invention, the flange portion of a steel material such as a nut is always in contact with the opening end portion of the socket wrench, and the nut or the like is not easily detached from the socket wrench, so that the operability of the socket wrench is improved. Also, when the bolt is screwed into the nut, as the tip of the bolt screw protrudes from the nut, the magnet holder absorbs the movement of the bolt screw, and the bolt screw tip does not press the heel side end surface of the housing part. Since it does not protrude from the storage portion, the operability of the socket wrench is improved.

  Hereinafter, embodiments of the socket wrench according to the present invention will be described based on specific examples. However, these specific examples are illustrative and are not limited thereto.

(Embodiment 1)
A socket wrench according to Embodiment 1 of the present invention will be described with reference to FIG.
As shown in FIG. 1, the socket wrench 1 is provided with an accommodating portion 6 for accommodating a bolt head and a nut at the tip portion. The shape of the accommodating portion 6 is preferably formed in a hexagon so as to correspond to the hexagon head bolt. Further, a hollow hole 7 is formed on the heel side of the housing portion 6 so as to communicate with the housing portion 6. The shape of the hollow hole 7 may be any shape, but is preferably substantially cylindrical. A magnet holder 2 is inserted into the hollow hole 7, and the magnet holder 2 can slide in the axial direction of the socket wrench 1.

  The socket wrench 1 according to the first embodiment includes a first locking portion 3 provided on the inner surface of the hollow hole 7, and a socket wrench rear end side from the first locking portion 3, and the magnet holder Between the second latching portion 4 provided on the outer surface of the coil and between the second latching portion 4 and the socket wrench hollow hole 7 side end portion 11, and a contractible coil spring A and B is provided.

  Both springs A and B are preferably balanced in that the tip surface 8 of the magnet holder 2 is positioned at the maximum thickness of a bolt or the like. The position of the maximum thickness is, for example, a bolt having the maximum thickness among bolts currently available on the market in a state where the flange portion 5 provided at the lower end of the bolt head is in contact with the socket wrench tip 9. The position where there is a tip part of a bolt head when inserting etc. into storage part 6 is said. If the point where the spring A and the spring B are balanced is the basic setting position (the origin position of the magnet holder), this origin position may be located on the tip side of the socket wrench from the position of the maximum thickness, or The socket wrench may be located on the rear end side. When this origin position is located on the tip side of the socket wrench from the position of the maximum thickness, when the bolt with the substantially maximum thickness is inserted into the receiving part, the magnet holder 2 is placed behind the socket wrench by the tip of the bolt head. It is pushed to the end side. In addition, when the origin position is located at the rear end side of the socket wrench from the position of the maximum thickness, the bolt and the magnet built in the magnet holder 2 are inserted when the bolt having the substantially maximum thickness is inserted into the receiving portion. 10 is attracted to the tip of the socket wrench. In both cases, when the bolt is removed from the accommodating portion 6, the magnet holder 2 can return to the origin position. In both cases, for example, when a bolt screw is screwed into the nut and the tip 20 of the bolt screw protrudes from the nut, the magnet holder 2 can be pushed back by the tip 20. Thereby, since a nut does not remove | deviate from the accommodating part 6, operativity improves.

  Further, as described above, by adopting a structure in which the springs are provided in the upper and lower two stages, when the position of the magnet holder is moved by the adsorption by the magnet, the magnet holder can be operated even if the attraction force of the magnet is small. . That is, in the socket wrench provided with the springs in the upper and lower stages as described above, the operation can be easily started as compared with the one that receives the bias of the spring force from only one side. From this, even if the magnetic force of the magnet is weak, the same effect can be exerted with respect to adsorption, which contributes to cost reduction.

Furthermore, the springs A and B are contractible coil springs and are preferably provided so as to be in contact with the outer surface of the magnet holder 2. By providing in this way, the spring is fixed between the inner wall of the hollow hole 7 and the outer surface of the magnet holder 2, and even when the magnet holder is slid, the spring can be prevented from being detached.
Further, the magnet 10 is preferably provided inside the front surface 8 of the tip of the magnet holder 2 or in the vicinity of the front surface 8.

  FIG. 4 shows a case where a nut thinner than the maximum thickness as shown in FIG. 2 is inserted into the socket wrench according to the first embodiment. In this case, the magnet holder 2 is moved to the socket wrench tip 9 side by the magnet 10 built in the magnet holder 2. The distance that the magnet holder 2 moves to attract and hold the nut is large. FIG. 5 shows a case where a nut having a large thickness (a nut with the maximum thickness) as shown in FIG. 3 is inserted into the socket wrench 1. In this case, the magnet holder 2 can attract and hold the nut with little movement. In either case, the collar portion 5 is arranged at a fixed position, that is, in contact with the tip 9 of the socket wrench accommodating portion, although the thickness is different. Therefore, even when a nut having a large thickness is inserted into the socket wrench, since the flange portion 5 does not move away from the end portion 9 of the socket wrench, the problem that the nut is easily detached from the socket wrench can be solved.

FIG. 6 shows a case where the magnet holder 2 is retracted toward the axial side as the bolt screw 22 protrudes from the nut 12 when the nut 12 is screwed into the bolt screw 22 . By screwing the bolt screw into the nut, the tip 20 of the bolt screw presses the magnet holder 2, but the movement of the bolt screw is absorbed by the spring B, and the nut does not come off from the accommodating portion 6. Therefore, it can be set as the socket wrench which has favorable operativity.

(Embodiment 2)
A socket wrench according to Embodiment 2 of the present invention will be described with reference to FIG. FIG. 7 shows a socket wrench 1 in which a coiled spring A is provided between the first locking portion 3 and the second locking portion 4 so that the magnet holder 2 is spring-biased on the rear end side of the socket wrench. Is shown. As shown in FIG. 7, the point of having only one spring A is different from the socket wrench according to the first embodiment, but is otherwise the same as the configuration of the first embodiment.

When a bolt or nut (hereinafter referred to as a bolt or the like) is inserted into the socket 6 wrench receiving portion 6, the magnet holder 2 is attached to the spring A provided between the first locking portion 3 and the second locking portion 4. as is adsorbed to the bolt or the like against the biasing force, it is preferable that the biasing force of the spring a is set to be smaller than the suction force of the magnet 10 and the bolts.

10, such as shown in FIG. 8, the thickness of the bolt head shows a case of inserting the socket wrench 1 according to the second embodiment a thin bolt than the maximum thickness. FIG. 11 shows a case where a bolt having the maximum thickness as shown in FIG. 9 is inserted into the socket wrench. In this case, the nut can be attracted and held even if the magnet holder hardly moves. In either case, the collar portion 5 is arranged at a fixed position, that is, in contact with the tip 9 of the socket wrench accommodating portion, although the thickness is different. Therefore, even when a bolt having a large bolt head thickness is inserted into the socket wrench, since the collar portion 5 does not move away from the end portion 9 of the socket wrench, the problem that the bolt is easily detached from the socket wrench can be solved. it can.

(Embodiment 3)
With reference to FIG. 12, a socket wrench according to Embodiment 3 of the present invention will be described.
The configuration of the socket wrench 1 according to the third embodiment is substantially the same as the configuration of the socket wrench according to the first embodiment, but the socket wrench according to the third embodiment has a hollow portion that penetrates in the axial direction. It differs in having 21.

  FIG. 13 shows a case where a nut thinner than the maximum thickness as shown in FIG. 2 is inserted into the socket wrench according to the third embodiment, and the nut is screwed into the bolt screw. FIG. 14 shows a case where a thick nut (maximum thickness nut) as shown in FIG. 3 is inserted into the socket wrench and the nut is screwed into the bolt screw. When a nut with a small thickness is inserted, the magnet holder 2 is attracted to the nut and moves. However, when a nut with the maximum thickness is inserted, the magnet holder 2 is attracted to the nut but does not move.

  When the nut is inserted into the accommodating portion 6, the collar portion 5 can be brought into contact with the end portion 9 of the socket wrench as shown in FIGS. 13 and 14, and protrudes from the nut when the bolt screw 22 is screwed into the nut. When the bolt screw 22 enters the hollow portion 21 in the magnet holder 2, the nut is not pushed out from the bolt head accommodating portion 6, so that the socket wrench is excellent in operability.

  In the magnet holder 2, it is preferable to provide a protective layer 24 between the cavity portion 21 and the ring-shaped magnet 23 formed so as to go around the cavity portion 21. As shown in FIG. 15, in the socket wrench without the protective layer 24, since the bolt screw 22 and the ring-shaped magnet 23 are in direct contact with each other, the ring-shaped magnet 23 is easily damaged, but as shown in FIG. By providing the protective layer 24 between the bolt screw 22 and the ring-shaped magnet 23, the contact between the ring-shaped magnet 23 and the bolt screw 22 can be eliminated and the ring-shaped magnet 23 can be prevented from being destroyed.

(Embodiment 4)
Next, a socket wrench according to Embodiment 4 of the present invention will be described with reference to FIG. As shown in FIG. 16, a second locking portion 4 is provided on the outer periphery of the magnet holder 2, and a coiled spring B is provided between the second locking portion 4 and the hollow hole flange side end portion 11. Other configurations are substantially the same as the configuration of the socket wrench according to the first embodiment.

The magnet holder 2 may be arranged so that the end 8 of the magnet holder is positioned at the minimum thickness of the bolt head. In this case, the head of the flanged bolt having the maximum thickness is inserted into the housing 6. Then, the magnet holder 2 is pressed by the bolt head and slid toward the rear end side of the socket wrench in the hollow hole 7.
In addition, the magnet holder 2 may be arranged so that the position of the end 8 of the magnet holder is closer to the rear end side of the socket wrench than the position of the maximum thickness of the bolt head. When the head is inserted into the housing portion 6, the magnet holder moves toward the tip of the socket wrench in the hollow hole 7, and the magnet 10 in the magnet holder 2 adsorbs steel materials such as bolts and nuts. In this case, it is necessary to fix the magnet holder 2 and one end of the spring B with an adhesive or the like. Further, it is necessary to fix the hollow hole flange side end portion 11 and the other end portion of the spring B with an adhesive or the like.

  FIG. 17 shows a case where a bolt having the minimum thickness as shown in FIG. 8 is inserted into the bolt head accommodating portion 6 of the socket wrench of FIG. Since the position of the magnet holder 2 is set so that the end 8 of the magnet holder is positioned at the minimum thickness of the bolt head, the magnet holder 2 hardly moves, but the magnet 10 incorporated in the magnet holder 2. To hold the bolt.

  FIG. 18 shows a case where a bolt having the maximum thickness as shown in FIG. 9 is inserted into the bolt head accommodating portion of the socket wrench of FIG. 16, and the magnet holder 2 is pressed by the inserted bolt. If the bolt is screwed into the bolt hole while the socket wrench 1 is pressed against the bolt, the bolt will not fall off from the accommodating portion 6.

FIG. 1 shows a first locking portion 3 provided on the inner surface of the hollow hole 7, and a socket wrench rear end side from the first locking portion 3 and a first locking portion 3 provided on the outer surface of the magnet holder. 2 shows a socket wrench provided with a coiled spring B between the second locking portion 4 and between the second locking portion 4 and the socket wrench hollow hole 7 end portion 11. FIG. 2 shows a flanged nut that is thinner than the maximum thickness. FIG. 3 shows a nut with a maximum thickness. FIG. 4 shows a case where a flanged nut thinner than the maximum thickness shown in FIG. 2 is inserted into the bolt head accommodating portion of the socket wrench of FIG. FIG. 5 shows a case where the flanged nut having the maximum thickness shown in FIG. 3 is inserted into the balt head accommodating portion of the socket wrench of FIG. FIG. 6 shows a case where the magnet holder is retracted toward the axial side as the screw protrudes from the nut when the bolt screw is screwed into the nut. FIG. 7 shows a socket wrench in which a coiled spring A is provided between the first locking portion 3 and the second locking portion 4 so that the magnet holder 2 is spring-biased on the rear end side of the socket wrench. 1 is shown. FIG. 8 shows a flanged bolt thinner than the maximum thickness. FIG. 9 shows a flange bolt with the maximum thickness. FIG. 10 shows a case where a bolt thinner than the maximum thickness shown in FIG. 8 is inserted into the bolt head accommodating portion of the socket wrench of FIG. FIG. 11 shows a case where the bolt bolt with the maximum thickness shown in FIG. 9 is inserted into the bolt head accommodating portion of the socket wrench of FIG. FIG. 12 shows a socket wrench having a cavity in the magnet holder. FIG. 13 shows a case where a nut thinner than the maximum thickness shown in FIG. 2 is inserted into the bolt head accommodating portion of the socket wrench of FIG. FIG. 14 shows a case where the nut having the maximum thickness shown in FIG. 3 is inserted into the balt head accommodating portion of the socket wrench of FIG. FIG. 15 shows a conventional socket wrench without a protective layer. FIG. 16 shows that a second locking portion is provided on the outer periphery of the magnet holder, a coiled spring is provided between the second locking portion and the hollow hole flange side end, and the end 8 of the magnet holder is connected to the bolt head. The socket wrench set to be the minimum thickness position is shown. FIG. 17 shows a case where the bolt with the minimum thickness shown in FIG. 8 is inserted into the bolt head accommodating portion of the socket wrench of FIG. FIG. 18 shows a case where a bolt thicker than the minimum thickness shown in FIG. 9 is inserted into the bolt head accommodating portion of the socket wrench of FIG. 16 and the magnet holder is pressed by the bolt.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Socket wrench 2 Magnet holder 3 1st latching part 4 2nd latching part 5 Collar parts, such as a volt | bolt or a nut 6 Storage part 7 Hollow hole 8 End part of a magnet holder 9 End part of a socket wrench 10 Magnet 11 Hollow hole bowl Side edge
12 Nut 20 Bolt Screw Tip 21 Cavity 22 Bolt Screw 23 Ring Magnet 24 Protective Layer A, B Spring

Claims (6)

In a socket wrench having an accommodating portion for accommodating a bolt head provided at the tip of the socket wrench and a magnet built-in magnet holder provided on the back side of the accommodating portion,
The magnet holder is held by a pair of elastic bodies provided so as to extend in the axial direction of the socket wrench, and the point at which the force of the elastic bodies balances is the origin position of the magnet holder, while the bolts to the housing part When inserting the head, etc., the bolt etc. are attracted to the magnet built in the magnet holder, and the magnet holder can slide in the axial direction. When the bolt head, etc. is taken out from the housing part, the magnet holder A socket wrench which can be returned to the origin position. With the screw Nyutoki nut bolt threads F of the nut to the bolt threads protrude, socket wrench of claim 1, wherein said magnet holder is characterized in that it is retracted axially inner side. In a socket wrench having an accommodating portion for accommodating a bolt head provided at the tip of the socket wrench and a magnet built-in magnet holder provided on the back side of the accommodating portion,
The magnet holder is held by an elastic body, and the point where the elastic body is in an unloaded state is the origin position of the magnet holder, while the bolt built in the housing portion is inserted into the magnet built in the magnet holder. Bolts are adsorbed, the magnet holder can be moved to the tip side of the socket wrench , and the magnet holder can be returned to the origin position when the head of the bolt is taken out from the accommodating portion. Socket wrench. The origin position of the magnet holder is in 奧側the accommodating portion, when inserting the bolt head into the housing portion, a magnet holder by the magnets embedded in the magnet holder is movable in the socket wrench tip side, the 4. The socket wrench according to claim 3, wherein the magnet holder can be returned to the origin position when a bolt head or the like is taken out from the accommodating portion. It said magnet holder has a cavity portion in the axial direction of the magnet holder is inserted nut to the housing part, with the further nut protruding bolt screw from the nut is bolt threads F screwing, bolt screw cavity of the magnet holder The socket wrench according to claim 1, wherein the socket wrench is capable of entering into the socket.   The socket wrench according to any one of claims 1 to 5, wherein the elastic body is a contractible coil spring formed so as to cover an outer periphery of the magnet holder.

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