JP2008062331A - Wrench head and inner socket thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wrench head which makes a four-way socket chuck in simple constitution, and easily and surely performing insertion of plugs. <P>SOLUTION: An inner socket is a split-type including a long part where a cylinder part and a small-diameter plug part are integrated, and a short part formed of a large-diameter plug part which is fitted in the cylinder end. In the inner socket, a ratchet wrench head of a two-way socket structure is taken as an outer socket, the inside of the outer socket is provided with an inner peripheral groove, two springs are disposed on the outer periphery of the inner socket, and the inner socket is inserted to thereby construct a four-way socket chuck having an automatic position holding mechanism of a socket, the socket part coping with difference in outside diameter in four ways. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wrench head that can be used as a ratchet wrench with a built-in socket for inserting various tool plugs into socket holes and used as a ratchet wrench, and its inner socket. The present invention relates to a wrench head characterized by an inner socket constituting a four-way socket and the inner socket.

  A tool wrench with a built-in socket for inserting a plug for various tools into a required square socket hole and using it as a wrench is often used. In particular, in a ratchet wrench in which the rotation direction of the wrench can be switched, by making various tool plugs exchangeable, a single wrench can have a plurality of wrench functions.

  A socket chuck is provided on the wrench head of the ratchet wrench so that various tool plugs can be inserted, but a ratchet wrench with a so-called two-way socket chuck that has square socket holes at both ends of the cylinder has been put into practical use. Yes.

In the wrench provided with this square socket hole, various proposals have been made in order to make a single socket hole correspond to a plurality of caliber bolts and nuts.
JP-A-6-198571

  In a ratchet wrench, etc., so-called 2-way socket chucks with square socket holes at both ends of the cylindrical part have been proposed, but no 4-way socket chuck has been made with a simple configuration, and plugs can be easily and reliably inserted. A wrench head with a special configuration has not been proposed.

  An object of the present invention is, for example, to provide a wrench head characterized by an inner socket that constitutes a four-way socket corresponding to four different inner diameter sizes in a conventional ratchet wrench with a two-way socket chuck.

  The inventors have made various studies on the configuration of the 4-way socket, and in the conventional 2-way socket chuck, focused on making the socket holes concentric and double-folded. As a result, the cylindrical portion and the small-diameter plug portion are integrated. It has been found that a four-way socket can be constructed by using an inner socket that is a split type of a long portion and a short portion made of a large-diameter plug portion fitted to the end portion of the tube.

  That is, according to the present invention, the cylindrical portion and the plurality of rectangular small-diameter plug portions are formed of a split type of a long portion integrally or firmly fixed and a short portion including a plurality of rectangular large-diameter plug portions fitted to the cylindrical end portion. An inner socket for a wrench head.

  Further, the present invention provides a wrench head having socket holes at both ends of a cylindrical portion, a cylindrical outer socket fitted into the head, a cylindrical inner socket inserted into the outer socket, and an outer periphery of the inner socket. An automatic position holding mechanism that consists of two springs that are placed and placed in the outer socket, and can be positioned by pushing it in the insertion direction of the inner socket in combination with the inner circumferential groove on the inner circumferential surface of the outer socket It is the wrench head characterized by comprising.

  Further, the inventors have a configuration in which the O-ring is used between the groove portion on the cylindrical portion end side and the groove portion on the plug portion side in the inner socket, and the outer shape and the inner shape of the small diameter plug portion and the large diameter plug portion are hexagonal. A configuration in which the outer shape of the small-diameter plug portion and the large-diameter plug portion is a dodecagonal shape and the inner shape is a hexagonal shape, and the outer shape and the inner shape of the small-diameter plug portion and the large-diameter plug portion are also proposed in combination. To do.

  According to the present invention, in the ratchet wrench with a socket chuck, the inner socket having a split type of a long portion in which the cylindrical portion and the small-diameter plug portion are integrated and a short portion including the large-diameter plug portion fitted to the cylindrical end portion is provided. Realizes 4 way socket chuck function corresponding to 4 different outer diameter sizes.

  Further, according to the present invention, in the ratchet wrench with a socket chuck, the inner socket can be exchanged in a cylindrical outer socket fitted to the wrench head, and the inner socket is inserted into the socket hole of the required number of angles. Therefore, the internal and external shapes of the plug portion can be combined as appropriate, and can correspond to various shapes of tool plugs.

  A configuration of the inner socket, which is a feature of the present invention, that is, an inner socket for configuring a four-way socket corresponding to four different inner diameter sizes of the socket portion will be described in detail with reference to the drawings.

  As shown in FIGS. 1A and 1B, the inner socket 10 has a hexagonal plug portion at both ends of the cylindrical shape, a long portion 3 in which the tubular portion 1 and the small-diameter plug portion 2 are integrated, and a tubular portion 1 The large-diameter plug portion 4 can be fitted to the other end of the first and the second plug portion 4 so as to be integrated. Hexagon socket holes are formed on the inner peripheral surfaces of the plug portions at both ends of the inner socket 10, and hexagon plugs for various tools can be inserted. Here, a configuration in which an O-ring 5 is used between the groove portion on the tube portion end side and the groove portion on the plug portion side is employed for the configuration in which the plug portion 4 is fitted to the end of the tube portion 1.

  As shown in FIGS. 2A, 2B, and 2C, the inner socket can combine the outer shape and inner shape of the plug portion, and the outer shape and inner shape described above are hexagonal, the outer shape is dodecagonal and the inner shape. A configuration in which is a hexagon, and a configuration in which an outer shape and an inner shape are dodecagons can be adopted.

  Therefore, as shown in FIGS. 3A, 3B, 3D and 3D, the ratchet wrench head having a 4-way socket according to the present invention is configured such that the inner socket can be replaced in a cylindrical outer socket fitted to the wrench head. It is characterized by.

  The ratchet wrench head having such a 4-way socket is inserted into the outer socket and a cylindrical outer socket fitted to the ratchet wrench head, as shown in the exploded sectional view of FIG. 4 showing the configuration of the 4-way socket. A cylindrical inner socket, and two springs arranged on the outer periphery of the inner socket and arranged in the outer socket. The inner socket is a long portion in which the cylindrical portion and the small-diameter plug portion are integrated, and its cylindrical end. It consists of a split type with a short part consisting of a large-diameter plug part that fits into the part.

  In addition, these parts constitute an automatic position holding mechanism that can be positioned by being pushed in the insertion axis direction of the inner socket, in combination with an inner circumferential groove provided at a required location on the inner circumferential surface of the outer socket.

  In general, the handle connected to the wrench head has various forms. For example, an end opposite to the head can have another form of tool such as a sino (turned wire).

  As shown in FIG. 4, the inner socket is divided into a long portion where the cylindrical portion located on the left side of the drawing and the small-diameter plug portion are integrated, and a short portion consisting of a large-diameter plug portion fitted to the cylindrical end portion. Consists of. A spring is arranged on the outer peripheral side of the inner socket, an inner peripheral groove for positioning is provided in advance on the inner peripheral surface of the outer socket, and the parts are accommodated in the inner peripheral portion of the outer socket, thereby inserting the inner socket insertion shaft. An automatic position holding mechanism capable of positioning by pushing it in the direction is configured.

  More specifically, as shown in FIG. 5 and FIG. 3A, the hexagonal inner socket hole end surfaces are usually located on the same plane of the so-called triche as the dodecagon outer socket hole end surfaces on both sides. Here, socket holes with predetermined inner diameters are formed inside the open ends of the outer socket and inner socket, respectively.For example, the right side of FIG. 5 has two types of outer diameter plugs and bolts of 17 mm and 13 mm as socket holes. A two-way socket chuck that can be inserted is configured, and on the left side, a two-way socket chuck with two inner diameters of 14 mm and 10 mm is configured.

  Therefore, as is apparent from FIG. 5, both socket holes of the inner socket can be used in the normal intermediate position automatically held by the spring, and the inner socket hole having the inner diameter of 13 mm on the right side and the inner diameter of 10 mm on the left side can be used. .

  Further, as shown in FIG. 6, when a plug or bolt having an outer diameter of 14 mm is brought into contact with the left socket hole, the right side of the short part of the inner socket protrudes, so that the outer diameter of the outer socket is 14 mm. Plugs and bolts are inserted. Also, as shown in FIG. 7, when a plug or bolt with an outer diameter of 17 mm is brought into contact with the right socket hole, the long part of the inner socket protrudes, so that a plug with an outer diameter of 17 mm is inserted into the right outer socket hole. Bolts are inserted.

  In the ratchet wrench of the embodiment, the socket holes are concentric and doubled, the socket holes of the outer socket are 12 corners, the socket holes of the inner socket are 6 corners, as illustrated, 17 mm, 14 mm, 13 mm, A 4-way socket chuck that can insert four types of 10mm outer diameter hexagon plugs and bolts into the socket holes is constructed.

  The present invention, for example, using a ratchet wrench head having a conventional two-way socket structure as an outer socket, a cylindrical inner socket inserted into the outer socket, and an outer socket arranged on the outer periphery of the inner socket 2 A new function can be provided by comprising two springs. That is, the inner socket according to the present invention can provide a ratchet wrench with a 4-way socket chuck having a 4-way socket chuck whose socket portions correspond to four different outer diameter sizes.

A is an exploded perspective view of the inner socket, and B is an assembled perspective view. A, B, and C are assembly perspective views of the inner socket. A, B, C, and D are perspective explanatory views of a ratchet wrench head having a 4-way socket. It is an exploded sectional view of a ratchet wrench head having a 4-way socket. It is sectional explanatory drawing which shows the intermediate position of the automatic position holding mechanism of a socket. It is sectional explanatory drawing which shows one position of the automatic position holding mechanism of a socket. It is sectional explanatory drawing which shows the other position of the automatic position holding mechanism of a socket.

Explanation of symbols

1 Tube
2 Small diameter plug
3 Long section
4 Large diameter plug
5 O-ring
10 Inner socket

Claims (10)

An inner socket for a wrench head comprising a cylindrical portion and a plurality of rectangular small-diameter plug portions divided into a long portion integrated or fixed and a short portion composed of a plurality of rectangular large-diameter plug portions fitted to the end of the tube. 2. The inner socket according to claim 1, wherein the configuration in which the plug portion is fitted to the tube portion end is a configuration in which an O-ring is used between the groove portion on the tube portion end side and the groove portion on the plug portion side. 2. The inner socket according to claim 1, wherein an outer shape and an inner shape of the small diameter plug portion and the large diameter plug portion are hexagons. 2. The inner socket according to claim 1, wherein the outer diameter of the small-diameter plug portion and the large-diameter plug portion is a dodecagon and the inner shape is a hexagon. 2. The inner socket according to claim 1, wherein the outer shape and inner shape of the small-diameter plug portion and the large-diameter plug portion are dodecagons. In a wrench head having socket holes at both ends of the cylindrical portion, a cylindrical outer socket that is fitted to the head, a cylindrical inner socket that is inserted into the outer socket, and an outer socket disposed on the outer periphery of the inner socket An automatic position holding mechanism that can be positioned by being combined with the inner peripheral groove of the inner peripheral surface of the outer socket and pushed in the insertion axis direction of the inner socket. A wrench head using the inner socket according to 1. 7. The wrench head according to claim 6, wherein the configuration in which the plug portion is fitted to the end of the cylindrical portion is a configuration in which an O-ring is used between the groove on the end of the cylindrical portion and the groove on the plug portion side. 7. The wrench head according to claim 6, wherein an outer shape and an inner shape of the small diameter plug portion and the large diameter plug portion are hexagons. 7. The wrench head according to claim 6, wherein the outer diameter of the small-diameter plug portion and the large-diameter plug portion is a dodecagon and the inner shape is a hexagon. 7. The wrench head according to claim 6, wherein an outer shape and an inner shape of the small diameter plug portion and the large diameter plug portion are dodecagons.

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