JP3156872U - Ratchet screwdriver - Google Patents

Abstract

A ratchet driver capable of reliably switching positions is provided. The apparatus mainly includes a grip, a pedestal, a linkage, a ratchet mechanism, and a direction control unit. The ratchet mechanism includes a first braking member 41, a second braking member, and an elastic member 43. The first brake member is provided on the first pivot portion 26, the second brake member is provided on the second pivot portion 27, and the two brake members are provided with a plurality of ratchet teeth 422 in response to the continuous tooth portion 34. By providing the elastic member 43 between the two braking members, the two braking members are engaged with the continuous teeth in the opposite direction to the continuous teeth. The said direction control part is pivotally installed in the outer edge part of a base, and the direction control part can control the meshing relationship of two braking members and linkage by selection. [Selection] Figure 5

Description

The present invention relates to a type of ratchet driver, and more particularly to a type of ratchet driver that can reliably perform position switching.

Although the driver of the known technique has the effect of tightening and loosening the screwing element, it does not have the effect of positioning and acceleration and lacks the convenience of operation.

According to US Pat. No. 6,644,147 (patent document 1) Ratchet device for a screwdriver, a ratchet driver is a type of ratchet driver, and each brake block is subjected to compression of a spring, thereby causing a bushing ring gear and The cover is provided with a rotatable lid at the end of the main body, and when the lid is rotated, each brake block is moved to separate or engage the toothed portion of each brake block and the ring gear surface. To control.

United States Patent 6,644,147

A known ratchet driver controls the meshing relationship between the ratchet block and the ratchet wheel by connecting the two brake blocks with a spring and moving the lid. However, the inner wall of the ratchet driver is deformed by the pressure of the ratchet block, which affects the meshing force between the ratchet block and the ring gear surface. In addition, the compression spring connected to the two brake blocks has a drawback of elastic fatigue. There is. While the ratchet driver is rotating, the compression spring is always pressed by the braking block to cause fatigue, and the meshing force between the ratchet block and the ring gear is affected. Further, since the ratchet block is stopped in the receiving groove by a slip fit, the position of the ratchet block tends to shift, and there is a drawback that the position of the ratchet driver cannot be accurately switched, and it is necessary to solve it immediately.

The main object of the present invention is to provide a ratchet driver capable of reliably switching between different positions for existing technical problems.

The first braking member and the second braking member are pivotally mounted on the pedestal, and the engagement or disconnection with the linkage is controlled by the pivoting direction of the first braking member, and the elastic member is the engagement between the braking member and the linkage. It is an object of the present invention to provide a kind of ratchet driver that can be elastically applied and securely fix the ratchet driver to three fixing positions.

It is another object of the present invention to provide a kind of ratchet driver in which the directional control unit can be moved between the slots at three positions by configuring the positioning unit with three slots and rails.

From the following description, the present invention can summarize the following advantages.
A. The first braking member and the second braking member of the ratchet driver according to the present invention are pivotally mounted on the pedestal, and the engagement or disconnection with the linkage is controlled by the pivoting of the braking member, and the elastic member is linked to the braking member. The ratchet driver can be securely fixed to the three fixing positions by elastically applying the engagement with the heel.

B. By configuring the positioning part of the ratchet driver according to the present invention from three slots and rails, the direction control part is limited to movement between the three slots.

It is a three-dimensional external view of the ratchet driver according to the present invention. It is a three-dimensional exploded view of a ratchet driver according to the present invention. It is the three-dimensional external view seen from another visual angle of the ratchet driver concerning the present invention. It is sectional drawing of the ratchet structure of the ratchet driver concerning this invention. FIG. 5 is a cross-sectional view taken along the line 5-5 shown in FIG. 4 according to the present invention. It is an operation | movement aspect figure which concerns on this invention, and the direction control part shows the state currently set to the 2nd position. Continuing to FIG. 6, when the pedestal rotates counterclockwise, the second braking member is disengaged from the linkage. It is an operation | movement aspect figure which concerns on this invention, and the direction control part shows the state currently set to the 3rd position. Continuing from FIG. 8, when the pedestal rotates clockwise, the first braking member is removed from the linkage.

1 to 3, a three-dimensional external view and a three-dimensional exploded view of a ratchet driver according to the present invention are referred to. The present invention mainly includes a grip 10, a pedestal 20, a linkage 30, a ratchet structure 40, and a direction control unit 50. The pedestal 20 can be coupled to the grip 10. The continuous rod 30 can freely rotate and can be loosely fitted to the pedestal 20, and the ratchet structure 40 can be provided on the pedestal 20 and meshed with the continuous rod 30. The meshing state between the ratchet structure 40 and the linkage 30 is controlled by the direction control unit 50.

Please refer to FIG. 4 and FIG. The pedestal 20 has a first end 21 and a second end 22, and the first end 21 can be coupled to the grip 10. A coupling hole 23 is provided in the axial direction of the pedestal 20, and the pedestal 20 is disposed in the coupling hole 23. Go through. The coupling hole 23 is fitted into the continuous rod 30, and a joint portion 24 is formed at the end of the second end 22 of the pedestal 20 to accommodate the ratchet structure 40. When an arcuate protrusion lump 25 is provided at the edge of the joint 24 and the virtual perpendicular V is used as an axis, the protrusion lump 25 forms a shape that balances right and left. The projection lump 25 forms a holding collar 251 toward the first end 21, an arcuate housing portion 252 is formed on the inner periphery of the projection lump 25, and the joint 24 is a first pivot portion on one side of the protrusion lump 25. 26 and the second pivot part 27 are provided in a convex manner, and a positioning part 28 is provided between the two pivot parts 26 and 27. When the virtual perpendicular V is used as an axis, the first pivot part 26 and the second pivot part 27 are arranged so as to be balanced with respect to the left and right, and the positioning part 28 forms a shape that is balanced with the left and right. A first fixing portion 261 is provided between the first pivot portion 26 and the protrusion lump 25, and a second fixing portion 271 is provided between the second pivot portion 27 and the protrusion lump 25. The positioning portion 28 includes a first slot 281, a second slot 282, a third slot 283, and a rail 284 that communicates with the slots 281, 282, and 283. The first slot 281 is attached on the vertical line V, and the second slot 282 and the third slot 283 are arranged in balance on both sides of the first slot 281.

The connecting rod 30 has a first end 31 and a second end 32, and the first end 31 of the connecting rod 30 is pivotally connected to the coupling hole 23 of the pedestal 20, so that the linking rod 30 and the pedestal 20 are opposed to each other. Can be rotated. A stop hole 33 for connecting to the tool head portion 60 is provided in the axial direction of the second end 32 of the linkage 30. A tooth portion 34 is provided on the outer peripheral portion of the first end 31 of the continuous rod 30.

A ratchet structure 40 is provided at the joint portion 24 of the pedestal 20, and the ratchet structure 40 includes a first braking member 41, a second braking member 42, and an elastic member 43. The first braking member 41 and the second braking member 42 are arranged in a balanced manner with the virtual perpendicular V as an axis.

The first braking member 41 is provided with a pivotal support hole 411 for pivoting on the first pivoting portion 26, a plurality of ratchet teeth 412 is provided at one end of the first braking member 41, and the ratchet teeth 412 are connected to the linkage 30. It is possible to mesh with the tooth portion 34. The first braking member 41 is provided with an abutting part 413 and a braking part 414 at the opposite end of the ratchet teeth 412, the abutting part 413 is located in the vicinity of the protrusion lump 25, and the braking part 414 is located in the vicinity of the positioning part 28. By attaching and rotating the first braking member 41, the braking portion 414 is applied to the first fixing portion 261.

The second braking member 42 has a pivotal support hole 421 for pivoting on the second pivoting portion 27, a plurality of ratchet teeth 422 are provided at one end of the second braking member 42, and the ratchet teeth 422 are connected to the linkage 30. It is possible to mesh with the tooth portion 34. The second braking member 42 is provided with an abutting portion 423 and a braking portion 424 at the opposite end of the ratchet teeth 422. The abutting portion 423 is located near the protrusion lump 25, and the braking portion 424 is located near the positioning portion 28. The braking portion 424 is applied to the second fixing portion 271 by mounting and turning the second braking member 42.

The elastic member 43 is provided between the two braking members 41, 42, the elastic member 43 is a sheet-like clasp, the elastic member 43 has a first end 431 and a second end 432, A receiving portion 252 is provided between both ends 431 and 432 to form a U-shape, and the first end 431 and the second end 432 of the elastic member 42 project outward in directions opposite to each other, whereby both ends 431 are formed. 432 press the contact portions 413 and 423 of the two braking members 41 and 42, respectively, and the ratchet teeth 412 and 422 of the two braking members 41 and 42 are teeth of the linkage 30 in opposite rotation directions. It meshes with the part 34.

By providing the direction control unit 50 at the second end 22 of the pedestal 20, the linkage 30 and the ratchet structure 40 are restricted between the direction control unit 50 and the pedestal 20, and a through hole 51 is formed in the central location of the direction control unit 50. And the through hole 51 allows the second end 32 of the linkage 30 to pass therethrough. A braking block 52 is provided on the inner periphery of the direction control unit 50, the braking block 52 is provided to face the positioning unit 28 of the base 20, and the braking block 52 is one of the braking members 41, by rotation of the direction control unit 50. The brake parts 414 and 424 of 42 are rotated, and the ratchet teeth 412 and 422 of the brake members 41 and 42 are pulled away from the tooth part 34 of the linkage 30 to realize the direction switching effect of the ratchet driver. A receiving hole 521 is provided in the axial direction of the brake block 52, and the positioning device 53 is accommodated in the receiving hole 521. The positioning device 53 includes a steel ball 531 and an elastic part 532, and the direction control part 50 can correspond to the positioning of the slots 281, 282, 283 of the three positioning parts 28. The direction control unit 50 is provided with a recessed annular groove 54 in the inner peripheral portion on the opposite side of the braking block 52, and a C-shaped fastener 55 is attached to the recessed annular groove 54. The fastener 55 is applied to the holding collar 251 of the projection lump 25 of the base 20 and restricts the direction control unit 50 from coming out.

Reference is made to FIGS. The direction control unit 50 can move between the first position, the second position, and the third position.

5 and 2 are referred to together, and FIG. 2 is also referred to. When the first position of the direction control unit 50 is selected in FIG. 5, the steel ball 531 of the positioning device 53 is fixed to the first slot 281 and is also linked to the ratchet teeth 412 and 422 of the two braking members 41 and 42. It meshes with the tooth part 34 of the collar 30. When the pedestal 20 is rotated clockwise, the pedestal 20 simultaneously drives the linkage 30 by engaging the second braking member 42 with the linkage 30. When the pedestal 20 is rotated in the counterclockwise direction, the first braking member 41 is engaged with the linkage 30 and the pedestal 20 drives the linkage 30 at the same time. Therefore, the pedestal 20 is rotated clockwise and counterclockwise. In both cases, the linkage 30 can be driven simultaneously.

Please refer to FIG. 6 and FIG. 7 as well as FIG. In FIG. 6, when the direction control unit 50 is selected to the second position, the steel ball 531 of the positioning device 53 is fixed to the second slot 282, and the braking block 52 of the direction control unit 50 is the braking unit of the first braking member 41. 414 is pushed in, and the ratchet teeth 412 of the first braking member 41 separates the tooth portion 34 of the linkage 30 and restricts the braking portion 414 between the braking block 52 and the first fixing portion 261. The two ends 432 are pressed by the second braking member 42 and the ratchet teeth 422 are engaged with the tooth portions 34 of the linkage 30. When the pedestal 20 is rotated in the clockwise direction, the second braking member 42 is simultaneously driven, and the second braking member 42 is driven to rotate clockwise by the reaction force of the linkage 30 to connect the second braking member 42. The dog 30 is engaged with the rod 30, and the linkage 30 is simultaneously driven by the pedestal 20. As shown in FIG. 7, when the pedestal 20 is rotated in the counterclockwise direction, the second braking member 42 is simultaneously driven, and the reaction force of the linkage 30 drives the second braking member 42 to rotate in the counterclockwise direction. Then, the ratchet teeth 422 of the second braking member 42 separates the tooth portion 34 of the linkage 30 and rotates freely, and the pedestal 20 rotates counterclockwise with respect to the linkage 30.

Please refer to FIG. 2 while referring to FIG. 8 and FIG. When the direction control unit 50 is selected as the third position in FIG. 8, the steel ball 531 of the positioning device 53 is fixed to the third slot 283, and the braking block 52 of the direction control unit 50 is the braking unit of the second braking member 42. 424 is pushed in, and the ratchet teeth 422 of the second braking member 42 are separated from the tooth portions 34 of the linkage 30, and the braking portion 424 is limited between the braking block 52 and the second fixing portion 271. The ratchet teeth 412 are limited to the tooth portions 34 of the linkage 30, the braking portion 424 is limited between the braking block 52 and the second fixing portion 271, and the first end 431 of the elastic member 43 is the first braking member. 41, the ratchet teeth 412 are engaged with the teeth 34 of the linkage 30. When the pedestal 20 is rotated in the clockwise direction, the first braking member 41 is simultaneously driven, and the first braking member 41 is driven and rotated in the clockwise direction by the reaction force of the linkage 30. The first braking member 41 is engaged with the linkage 30 and the pedestal 20 drives the linkage 30 simultaneously. As shown in FIG. 9, when the pedestal 20 is rotated in the counterclockwise direction, the first braking member 41 is driven at the same time, and the first braking member 41 is driven by the reaction force of the linkage 30 in the counterclockwise direction. The ratchet teeth 412 of the first braking member 41 can be rotated freely by separating the tooth portions 34 of the linkage 30. The pedestal 20 rotates counterclockwise with respect to the linkage 30.

It should be particularly noted that both ends 431 and 432 of the elastic member 43 are attached to the braking members 41 and 42, and the elastic member 43 has an extra portion while moving the position section of the linkage 30 apart by the braking members 41 and 42. The elastic member 43 can maintain a good elastic force for a long time and can improve the service life.

DESCRIPTION OF SYMBOLS 10 Grip 20 Base 21 1st end 22 2nd end 23 Joint hole 24 Joint part 25 Protrusion lump 251 Holding collar 252 Storage part 26 1st pivot part 261 1st fixed part 27 2nd pivot part 271 2nd fixed part 28 Positioning portion 281 First slot 282 Second slot 283 Third slot 284 Rail 30 Joint 31 First end 32 Second end 33 Stop hole 34 Tooth portion 40 Ratchet structure 41 First brake member 411 Pivoting hole 412 Ratchet tooth 413 Contact portion 414 Brake portion 42 Second brake member 421 Pivot hole 422 Ratchet teeth 423 Abutment portion 424 Brake portion 43 Elastic member 431 First end 432 Second end 50 Direction control portion 51 Through hole 52 Brake block 521 Receiving hole 53 Positioning Device 531 Steel ball 532 Elastic portion 54 Recessed annular groove 55 Fastener 60 Tool head V Vertical

Claims (6)

Grip,
A first end coupled to the grip; a coupling hole provided in a central location of the second end; and a first pivot and a second at the second end. A pedestal having a pivot part;
A pivot that is pivotally connected to the coupling hole of the pedestal, and a tooth portion is provided on the outer periphery, and
A first brake member, a second brake member, and an elastic member, wherein the first brake member is provided at the first pivot portion, and the second brake member is provided at the second pivot portion, and the two brakes The member is provided with a plurality of ratchet teeth corresponding to the teeth of the linkage, and the elastic member is provided between the two braking members, whereby the ratchet teeth of the two braking members are A ratchet structure that can mesh with the teeth of the linkage;
A ratchet driver including a direction control unit pivotally provided on an outer peripheral portion of the pedestal and controlling a meshing relationship between the two braking members and the linkage by selection. The coupling hole is provided in the axial direction of the pedestal, the linkage has a first end and a second end, the first end of the linkage is pivotally connected to the coupling hole, and the linkage Drilling the second end in the direction control unit, and providing a stop hole in the axial direction of the second end of the linkage;
The linkage and ratchet structure limit between the direction control portion and the pedestal, the second end of the pedestal further has a receiving portion,
A contact portion is provided at the opposite end of the ratchet tooth,
The elastic member is a sheet-shaped clasp, the elastic member has a first end and a second end, and between the both ends of the elastic member, the storage portion is provided to form a U-shape, 2. The ratchet according to claim 1, wherein the ratchet teeth are engaged with the teeth of the linkage in a reverse rotation direction by respectively applying both ends of the elastic member to the contact portion. driver. A joining portion is formed at the end of the second end of the pedestal, the joining portion is provided with a protruding lump on the outer peripheral portion opposite to the two pivoted portions, and an arcuate shape on the inner peripheral portion of the protruding lump The elastic member is accommodated in the accommodating portion, the first end and the second end of the elastic member project outwardly in opposite directions, and the pedestal has an imaginary perpendicular axis. The first braking member and the second braking member are arranged to balance each other left and right, and the protrusion lump forms a holding collar in response to the first end of the pedestal, 3. A concave annular groove is provided in an inner periphery, and the concave annular groove is provided for attachment of a C-shaped fastener, and is applied to a holding collar of a protrusion lump provided on the pedestal. Ratchet driver. The braking member is provided with a braking portion at an opposite end of the ratchet teeth, and a braking block is provided on an inner peripheral portion of the direction control portion, and the braking block is selected and applied to the braking portion of one of the braking blocks. A positioning portion is provided between the two pivot portions, and a receiving hole is provided in the axial direction of the braking block. The receiving hole is provided for receiving a positioning device, and is fixed to the positioning portion. Has a first slot, a second slot, a third slot, and a rail that communicates with the three slots, and the first slot is provided between the second slot and the third slot, and the positioning device Has a steel ball and an elastic part, and the elastic part fixes the steel ball to one of the slots by lightly applying the steel ball to the positioning part, and the first A first fixing portion is provided between the projecting portion and the protrusion lump, a second fixing portion is provided between the second pivot portion and the protrusion lump, and the two fixing portions are respectively connected to the two fixing portions. The ratchet driver according to claim 3, wherein the ratchet driver is applied to braking portions of two braking members. Grip,
A first end coupled to the grip; a coupling hole provided in a central location of the second end; and a first pivot and a second at the second end. A pedestal having a pivot part;
A pivot that is pivotally connected to the coupling hole of the pedestal, and a tooth portion is provided on the outer periphery, and
The first braking member includes a first braking member, a second braking member, and an elastic member, wherein the first braking member is provided at the first pivot portion, and the second braking member is provided at the second pivot portion. The member is provided with a plurality of ratchet teeth corresponding to the teeth of the linkage, and the elastic member is provided between the two braking members, so that the ratchet teeth of the two braking members are A ratchet structure that can mesh with the tooth portion of the heel,
It pivots on the outer periphery of the pedestal, controls the meshing relationship between the two braking members and the linkage, allows movement between the second position and the third position, and selects the second position. When the third position is selected, the ratchet teeth of the first braking member pull apart the continuous teeth, and when the third position is selected, the ratchet teeth of the second braking member separates the continuous teeth. The ratchet driver characterized by including a direction control part. The second end of the pedestal further has a receiving portion, the braking member is provided with a contact portion at the opposite end of the ratchet teeth, the elastic member is a sheet-like clasp, and the elastic member is the first An end and a second end, and the housing portion is attached between both ends of the elastic member to form a U-shape, and each end of the elastic member is lightly applied with two braking members. The two braking members are engaged with the tooth portions of the linkage in opposite directions, and the elastic member is provided with a braking portion at the opposite end of the ratchet teeth, and is braked on the inner peripheral portion of the direction control portion. A block is provided, and the brake block is optionally assigned a brake part of one brake member, a positioning part is provided between the two pivotal parts, a receiving hole is provided in the axial direction of the brake block, The accommodation hole accommodates the positioning device. It allows characterized in that it is fixed to the positioning unit, ratchet screwdriver according to claim 5, wherein.