JP5135294B2 - Double-headed ratchet wrench - Google Patents

Description

  The present invention relates to a double-headed ratchet wrench provided with a wrench part having a ratchet mechanism at both ends of a handle part.

  The double-headed ratchet wrench is provided with ring spanner-shaped wrench parts with different bolt heads and nut dimensions to be used at both ends of the handle part, and is provided with a ratchet mechanism in the wrench part. There is known a tool in which the ratchet mechanism is a bidirectional compatible type.

  Specifically, as shown in Patent Document 1 (Registered Utility Model No. 3043187), the inner peripheral surface is formed in a ring spanner portion to which a bolt head and nut are fitted, and the outer peripheral portion is a ratchet gear. The ratchet wheel is rotatably incorporated at both ends of the handle portion, and a rocking body having left and right claw portions that mesh with and disengage from the ratchet gear is mounted on the base side of the ratchet wheel, and the meshing claw portion side of the rocking body The oscillating body is provided with an urging mechanism for urging the ratchet gear in the direction of the ratchet gear, and both side portions of the oscillating body are projected on the outer periphery of the cover body forming the handle portion. The ratchet action direction is switched by operating.

  In Patent Document 2 (Japanese Utility Model Laid-Open No. 7-20261), an operating rod that follows the handle portion is connected to a rocking body (ratchet claw), and an operating portion is provided at the base end of the operating rod. A tool capable of switching the direction of ratchet action at the handle portion is disclosed.

Registered utility model No. 3043187. Japanese Utility Model Publication No. 7-20261.

  Using a tool (a tool described in Patent Document 1) that switches the ratchet action direction by directly operating the rocking body, insert the tip of the tool (wrench part) into a narrow part and perform screw / screw unscrewing operation. When switching, it is necessary to pull out from the work site once when switching, and in order to switch the ratchet action direction even though the bolt head and nut of the part that is not particularly visible are fitted to the ring spanner part. There is difficulty to use once you have to leave.

  Moreover, in the conventional tool (tool of patent document 2) which can switch a ratchet action direction at a hand part, while having to bother to incorporate an operating rod into a handle part and to form an operating part, the manufacturing cost of a tool becomes high. End up.

  Therefore, the present invention proposes a novel double-headed ratchet wrench that enables a hand switching operation by incorporating a very simple structure.

  The double-headed ratchet wrench according to the present invention (Claim 1) is a tool in which a wrench portion having a ratchet mechanism is provided at both ends of a rod-like handle portion, and the ratchet acting direction is switched by each swinging body protruding outward. The two oscillating bodies are connected by an action transmitting body so that the pivoting operation of one of the oscillating bodies rotates the other oscillating body.

  Therefore, one wrench part is fitted to the bolt head / nut (nut etc.) to be operated, and the other end side is gripped to perform screwing / releasing operation. When the is operated, the rocking body on the use side is also interlocked, and the ratchet action direction of the wrench portion is switched.

  In the double-head ratchet wrench according to the present invention (Claim 2), the rod-like handle portion is constituted by a cover body in which a handle core body is interposed between the front and back plates and the front and back plates, and the wrench portion is formed on the inner periphery. A ratchet wheel whose surface is formed in the ring spanner part where the bolt head and nut are fitted, and the outer peripheral part is a ratchet gear and is rotatably incorporated in the front and back plates of the both ends of the cover body, and the left and right claw parts that mesh with and release from the ratchet gear And an oscillating body that is pivotally mounted on the base side of the ratchet wheel, and an urging mechanism that urges the meshing claw portion of the oscillating body to rotate toward the ratchet gear. In a wrench having a known structure constituted by a portion, in particular, a storage groove portion is formed in the handle core body, and an operation transmission body in which both ends are connected to appropriate portions of both swinging bodies is stored in the storage groove portion, and an operation transmission member The -It is built in the body, and the existing structure wrench has a simple additional configuration with a working member inside, there is no change in appearance, it does not impair wrench operability, and it has a hand switching function. did.

  The configuration of the present invention is as described above. By connecting the oscillating bodies that switch the ratchet action direction in the double-headed ratchet wrench to each other by the operation transmission body, the other oscillating body is also interlocked with the switching operation of one oscillating body. It can be switched at the same time, and with the addition of a simple structure, it is possible to perform hand switching operation, and it is possible to provide a more convenient double-headed ratchet wrench at low cost.

The disassembled perspective view of 1st embodiment of this invention. FIG. The disassembled perspective view of the second embodiment. The whole perspective view which cut | disconnected the same part.

  Next, an embodiment of the present invention will be described. 1 and 2 show a first embodiment of the present invention, which is an example in which the present invention is applied to a commercially available tool called a so-called plate ratchet wrench.

  The double-headed ratchet wrench includes a cover body 1 that forms a rod-shaped handle portion (tool body), a wrench portion 2 that includes a ratchet mechanism formed at both ends of the cover body 1, and an operation transmission body mechanism 3.

  The cover body 1 includes front and back plates 11 and 12 made of metal plates, a resin handle core 13 interposed between the front and back plates 11 and 12, and a side frame 14 made of a thin metal plate that constitutes the entire outer peripheral surface. The front and back plates 11 and 12 are formed with support holes 15 at both end portions to which ratchet wheels 21 described later are mounted.

  The handle core material 13 is interposed between the front and back plates 11 and 12 outside the range where the wrench portion 2 is assembled. A transparent window 17 is formed at a location corresponding to the mounting position of the moving body 22.

  The wrench portion 2 includes a ratchet wheel 21, a rocking body 22, and an urging mechanism portion 23. The ratchet wheel 21 has an inner peripheral surface formed in a ring spanner portion 211 into which a nut or the like is fitted, and an outer peripheral portion is formed. As the ratchet gear 212, the outer peripheral surface corresponding to the support hole 15 in particular is a guide peripheral surface 213 that fits into the support hole 15.

  The ring spanner 211 has two different ratchet wheels 21 on both ends, and the nut diameters are different. In particular, the ring spanner 211 protrudes from the front and back to have different nut diameters.

  The oscillating body 22 is located between the front and back plates 11 and 12 and is pivotally mounted by a shaft portion 221 that is mounted through the front and back surfaces. The swinging body 22 faces the ratchet gear 212 and meshes with the gear 212. The left and right claw portions 222 are provided, and both side portions are protruded outward from the transparent window 17 to be an operation portion 223, and the opposite side of the surface on which the claw portion 222 is formed is a mountain-shaped protrusion surface. The balls 231 are switched and contacted.

  The urging mechanism portion 23 has the ridge 232 placed in the housing recess 16, the ball 231 is positioned at the tip of the ridge 232, and the meshing claw portion side of the oscillating body 22 is rotated and urged toward the ratchet gear 212. It is a thing.

  The above-described configuration is the same as that of the conventional double-head ratchet wrench, and the present invention particularly incorporates the operation transmission mechanism 3.

  The action transmission body mechanism 3 incorporates an action transmission body 31 formed of a metal rod into the cover body 1, and the action transmission body 31 is formed by bending the tip downward to form a mounting portion 311.

  In addition, a pin hole 32 is provided at an eccentric position in each rocking body 22, a storage groove portion 33 is formed in the handle core body 13 on a straight line connecting both the pin holes 32, and the operation transmission body 31 is placed in the storage groove portion 33. In addition to housing, the mounting portion 311 at the tip is inserted into the pin hole 32 so as to be movable, the wrench portion 2 and the operation transmission mechanism 3 are incorporated into the cover body 1, and the cover body 1 is integrated.

  Thus, like the conventional double-headed ratchet wrench, one wrench portion 2 is fitted to a nut or the like to be operated, the other end side is gripped, and the nut or the like is screwed / released. The operation portion 223 protruding in the direction is flipped up or down with a fingertip to rotate the rocking body 22, and the engaging claw portion 222 is switched to switch the ratchet action direction.

  In particular, since the action transmission body 31 of the action transmission body mechanism 3 connects both the oscillating bodies 22 at the eccentric position, when one of the oscillating bodies 22 is operated, the other oscillating body 22 also rotates together. Then, the ratchet action direction is switched, and even when the tool is in use, by operating the hand-side rocking body 22, the other rocking body 22 in use can be operated.

  Therefore, a tool having a hand side switching mechanism can be easily obtained by simply incorporating the operation transmission body 31 without additionally forming a special operation mechanism.

  FIGS. 3 to 4 show a second embodiment. In this embodiment, the present invention is applied to a tool called a curved plate ratchet wrench in which wrench portions at both ends of a handle portion are bent. Is.

  The wrench does not include the side frame 14 in the cover member 1 and normally has a configuration in which the ratchet gear 212 is exposed to the outside.

  Also in the wrench, as in the first embodiment, the operation transmission body mechanism 3a is formed with a pin hole 32 at an eccentric position of the swing body 22, and a storage groove portion 33 is formed in the handle core body 13, so that The formed operation transmission body 31 is incorporated into the cover body 1.

  In particular, the operation transmission body 31a is formed by bending both end portions according to the inclined bending state of the front plate 11a, and mounting the tip mounting portion 311 in the pin hole 32. The operation transmission body is parallel to the wrench portion surface. Since the (metal fine rod) 31a operates, the storage groove portion 33 formed in the handle core member 13 that becomes an inclined surface when viewed from the wrench portion is formed deep in consideration of the operation range, and the operation transmission body ( In order for the parallel movement of the metal rod 31a to be performed smoothly, the upper surface of the rocking body 22 and the inner surface of the front plate 11a are brought into close contact with each other, and the operating range of the operation transmitting body 31a around the pin hole 32 is defined as a fan-shaped recess. 34 is formed.

  Reference numerals in the drawings not described in the text indicate members that are the same as those in the first embodiment.

  Thus, similarly to the tool of the first embodiment, a nut or the like is screwed / released using a wrench portion. By operating the rocking body 22 on the hand side, the rocking body 22 on the front side is operated. Can be operated to switch the ratchet action direction.

  Further, each of the above embodiments employs a metal rod for the operation transmission bodies 31 and 31a, but particularly when the operation transmission body is not in a straight line like the tool of the second embodiment. Further, a flexible string body may be employed for the operation transmitting body, and in this case, the two strings that connect the left and right eccentric positions of the rocking body without using the operation transmitting body as a single member. By adopting, both oscillating bodies can be interlocked even for a tool with a large wrench bending.

1 Cover body (tool body and handle)
11, 11a Front plate 12, 12a Back plate 13 Handle core body 14 Side frame body 15 Support hole 16 Storage recess 17 Translucent window 2 Wrench part 21 Ratchet wheel 211 Ring spanner part 212 Ratchet gear 213 Guide peripheral surface 22 Oscillating body 221 Shaft part 222 Claw portion 223 Operation portion 23 Biasing mechanism portion 231 Ball 232 Strike 3, 3a Actuation transmission body mechanism 31, 31a Actuation transmission body 311 Mounting portion 32 Pin hole 33 Storage groove 34 Recess

Claims (5)

  In a tool in which a wrench portion provided with a ratchet mechanism is provided at both ends of the rod-like handle portion and the ratchet action direction is switched by each swinging body projecting to the outside, the rotating motion of one swinging body is the other swinging body. A double-headed ratchet wrench characterized in that both oscillating bodies are connected by an action transmitting body so as to rotate the oscillating member.   The rod-shaped handle is composed of a cover body that is integrated with the handle core between the front and back plates and the front and back plates, and the wrench is the ring spanner that fits the bolt head and nut on the inner peripheral surface. And a ratchet wheel that is rotatably incorporated into the front and back plates at both ends of the cover body as outer ratchet gears, and left and right claw portions that mesh with and disengage from the ratchet gear, and both side portions project from the outer periphery of the cover body. A swinging body mounted on the base side of the ratchet wheel, and a biasing mechanism part that biases the meshing claw part of the swinging body in the direction of the ratchet gear, and forms a storage groove in the handle core. The double-headed ratchet wrench according to claim 1, wherein an operation transmission body having both ends connected to appropriate portions of both oscillating bodies is housed in the housing groove portion, and the operation transmission body is built in the cover body.   The double-headed ratchet wrench according to claim 2, wherein the operation transmitting body is formed of a metal thin rod, and a pin hole is provided at an eccentric position of the swinging body, and a tip portion of the operation transmitting body is bent and attached to the pin hole. .   4. The double-headed ratchet wrench according to claim 3, wherein the operating range of the operation transmitting body around the pin hole is formed in a recess.   The double-headed ratchet wrench according to claim 2, wherein the action transmitting body is formed of a flexible string body and the left and right eccentric positions of the swinging body are connected to each other.

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