TWM490942U - Reversing apparatus for ratchet spanner - Google Patents

Description

Ratchet wrench reversing device

The present invention relates to a reversing device, and more particularly to a ratchet wrench reversing device suitable for switching the direction of rotation of a ratchet wrench.

Referring to FIG. 1 to FIG. 3 , a common ratchet wrench reversing device 1 is adapted to be mounted on a head receptacle 21 of a ratchet wrench 2 . The reversing device 1 includes a ratchet 11 , a left tilting block 12 , and a The right flap 13 and a switching member 14 are provided. The switching member 14 includes a cam block 141 located in the housing 21 between the left and right swaying blocks 12, 13, and a toggle switch that is coupled to the cam block 141 and exposed in the housing 21 142.

When the toggle switch 142 is toggled, the rotation direction of the ratchet 11 can be switched. When the toggle switch 142 is turned to the left side, the cam block 141 will abut the left and right sway blocks 12, 13 and the left The swaying block 12 is away from the ratchet 11 and the right swaying block 13 is engaged with the ratchet 11 at this time, the ratchet 11 can be rotated unidirectionally in a counterclockwise direction; conversely, the toggle switch 142 is toggled to the right At this time, the cam block 141 causes the left swaying block 12 to mesh with the ratchet 11 and the right swaying block 13 to move away from the ratchet 11, and the ratchet 11 can be unidirectionally rotated in a clockwise direction.

To match different hand habits or to use different dominant hands A reversing ratchet wrench reversing device disclosed in Japanese Patent Application Laid-Open No. I411496 is hereby incorporated.

The reversing ratchet wrench reversing device is different from the common ratchet wrench reversing device. When the toggle switch is turned to the left side, the ratchet wheel can be rotated unidirectionally in a clockwise direction. Conversely, the toggle switch is reversed. When the dial is turned to the right side, the ratchet can be rotated counterclockwise to satisfy the user's habits.

However, the component construction and assembly of the reversing ratchet wrench reversing device is far from the conventional ratchet wrench reversing device 1, so the manufacturer needs to re-open the molded component and even open up a brand new production line for assembly. It is not possible to retrofit with existing material components and the manufacturing cost is quite high.

Accordingly, it is an object of the present invention to provide a reversing ratchet wrench reversing device that can be retrofitted with existing components.

Therefore, the novel ratchet wrench reversing device is adapted to be mounted on a pocket defined by a head of a ratchet wrench. The ratchet wrench reversing device comprises a ratchet, a switching member, a left swaying block and a right swaying block.

The ratchet is pivotally disposed on the head of the ratchet wrench, and includes a ratchet portion located in the pocket, and a driving portion that is coupled to the ratchet portion and protrudes from the pocket.

The switching member is pivotally disposed on the head of the ratchet wrench about an axis, and includes a cam block located in the pocket, and a cam block Cooperating coaxially behind the cam block and protruding from the toggle switch of the pocket.

The left flap is pivoted to the pocket and is located to the left of the cam block and is selectively engageable with the ratchet.

The right swaying block is pivotally disposed on the sump and located on the right side of the cam block, and is selectively engaged with the ratchet portion with the left swaying block.

The cam block of the switching member has two pushing surfaces respectively corresponding to the left and right swaying blocks and adjacent to the ratchet, and two positioning faces respectively corresponding to the left and right swaying blocks and away from the ratchet.

The toggle switch is swingable relative to the head about the axis between a forward position and a reverse position.

In the forward position, the toggle switch swings to the left side, and the cam block is interlocked to push the right abutting block against the ratchet portion away from the ratchet portion. The block abuts against the corresponding positioning surface and engages with the ratchet portion, the ratchet being rotatable in a clockwise direction unidirectionally.

In the reverse position, the toggle switch swings to the right side, and the cam block is interlocked to push the pushing surface of the left flap to push the left flap away from the ratchet. Abutting against the corresponding positioning surface and engaging with the ratchet portion, the ratchet can rotate in a counterclockwise direction unidirectionally.

The effect of the novel is that, by the special configuration of the cam block of the switching member, the slewing and reversing position of the toggle switch is opposite to the existing ratchet wrench switching device, and can satisfy users with different hand-sitting habits, and the present invention Most components can directly apply the components of the existing ratchet wrench reversing device, and the manufacturing and assembly are similar to the existing ratchet wrench reversing device, so the production cost is relatively high. When it is cheap.

3‧‧‧ Ratchet Wrench

31‧‧‧ head

311‧‧‧The wall

312‧‧‧ 容容

32‧‧‧ front cover

4‧‧‧ratchet

41‧‧‧ ratchet

42‧‧‧ Drive Department

5‧‧‧Switching parts

51‧‧‧ cam block

511‧‧‧ wide end

512‧‧‧ narrow end

513‧‧‧Pushing face

513’‧‧‧

514‧‧‧ positioning surface

514’‧‧‧ positioning surface

52‧‧‧Toggle switch

521‧‧‧ pivot end

522‧‧‧Toggle end

6‧‧‧Left block

7‧‧‧Right block

8‧‧‧Flexible parts

L‧‧‧ axis

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a perspective view of a conventional ratchet wrench; FIG. 2 is a section along the line II-II of FIG. A schematic cross-sectional view showing that a toggle switch of a reversing device of the ratchet wrench is turned to the left side, and a ratchet of the reversing device can be rotated counterclockwise; FIG. 3 is a view similar to FIG. 2, illustrating The toggle switch is turned to the right side, and the ratchet can be rotated in a clockwise direction; FIG. 4 is an exploded perspective view of one embodiment of the present invention mounted on a ratchet wrench; FIG. 5 is the embodiment and the ratchet wrench A combined sectional view showing that a toggle switch of the embodiment is toggled to a forward position and located on the left side, so that a ratchet of the embodiment can be rotated in a clockwise direction; FIG. 6 is a view similar to FIG. The toggle switch is turned to a reverse position and is located on the right side, so that the ratchet can rotate in a counterclockwise direction; FIG. 7 is a cross-sectional view of the second embodiment of the embodiment, illustrating that the toggle switch is located at the Shun position Figure 8 is a view similar to Figure 7, illustrating the toggle switch in the reverse position; Figure 9 is a cross-sectional view of the third embodiment of the embodiment, illustrating the toggle switch in the forward position; Figure 10 is a view similar to Figure 9, illustrating the toggle switch located in the reversal position.

Referring to FIG. 4 to FIG. 6 , an embodiment of the present invention is applied to a recess 312 defined by a peripheral wall 311 of a head 31 of a ratchet wrench 3 , and the ratchet wrench is defined by the ratchet wrench A front cover 32 of 3 is sealed and positioned. It should be noted that, in this embodiment, the use state when the user holds the ratchet wrench 3 is used as the basis for the front, rear, left, and right directions in the present embodiment.

The ratchet wrench reversing device comprises a ratchet 4, a switching member 5, a left swaying block 6, a right swaying block 7, and two elastic members 8.

The ratchet 4 is pivotally disposed on the head 31 of the ratchet wrench 3 and includes a ratchet portion 41 located in the pocket 312, and is coupled to the ratchet portion 41 and protrudes from the pocket Drive unit 42 of 312.

The three-dimensional configuration of the driving portion 42 is matched with a corresponding screw type, and can be fitted with the screw of the model to loosen or lock the screw. Therefore, the configuration shown in the figure is only For illustrative purposes, it is not limited to this.

The switching member 5 is pivotally disposed about an axis L of the head 31 of the ratchet wrench 3, and includes a cam block 51 disposed along the axis L of the slot 312, and a coaxial portion of the cam block 51. The toggle switch 52 is protruded from the rear of the cam block 51 and protrudes from the pocket 312.

The left flap 6 is pivotally disposed on the pocket 312 and located to the left of the cam block 51 and optionally engages with the ratchet portion 41 of the ratchet 4 .

The right flap 7 is pivotally disposed on the pocket 312 and located at the cam The right side of the block 51 is engaged with the ratchet portion 41 alternately with the left flap block 6.

The elastic members 8 respectively abut against the peripheral wall 311 of the head portion 31 of the ratchet wrench 3 and the left and right swaying blocks 6, 7 respectively, and respectively generate a left and right swaying blocks 6, 7 toward the switching member. 5 swinging elastic restoring force.

It should be noted that the configuration, the matching relationship and the corresponding functions of the ratchet 4, the left and right swaying blocks 6, 7 and the elastic members 8 are the same as those of the existing ratchet wrench reversing device, and can be directly applied. The existing components are not the focus of the present invention, and therefore will not be described in detail in this embodiment.

The cam block 51 of the switching member 5 has a wide end portion 511 facing the ratchet portion 41, a narrow end portion 512 away from the ratchet portion 41 and having a maximum width smaller than the maximum width of the wide end portion 511, and two pairs respectively The pushing surfaces 513, 513' formed on the wide end portion 511 by the left and right flapping blocks 6, 7 and the second end portions 512 corresponding to the left and right tilting blocks 6, 7 respectively formed on the narrow end portion 512 Positioning faces 514, 514'. The spacing of the abutting faces 513, 513' from the axis L is greater than the spacing of the locating faces 514, 514' from the axis L.

The toggle switch 52 of the switch member 5 has a pivot end portion 521 disposed on the head 31 of the ratchet wrench 3 along the axis L and engaged with the cam block 51, and a pivot end portion 521 is formed by the pivot end portion 521 A direction away from the ratchet 4 extends, and the toggle end 522 can be swung between the forward pivot position and the reverse pivot position relative to the head pivot portion 521.

In the forward position, the toggle end portion 522 of the toggle switch 52 swings to the left side, and the cam block 51 is interlocked to push the right abutment block 7 against the abutment surface 513' of the right flap 7 Far from the ratchet portion 41 of the ratchet 4 At this time, the left flap 6 abuts against the corresponding positioning surface 514 and meshes with the ratchet portion 41, so that the ratchet 4 can rotate in a clockwise direction unidirectionally.

In the reverse position, the toggle end portion 522 swings to the right side, and the cam block 51 is interlocked to push the pushing portion 513 of the left flapping block 6 against the ratcheting portion 6 away from the ratchet portion 41, At this time, the right swaying block 7 abuts against the corresponding positioning surface 514' and meshes with the ratchet portion 41, so that the ratchet 4 can rotate in a counterclockwise direction unidirectionally.

It should be noted that, in this embodiment, the state of use of the ratchet wrench 3 when the user holds the ratchet wrench is used as the basis for the clockwise and counterclockwise directions in the description of the embodiment.

Thus, the user can switch the rotation direction of the ratchet 4 by dialing the dial end 522 of the toggle switch 52, thereby rotating or loosening a screw with the driving portion 42 of the ratchet 4. In addition, the slewing and reversing positions of the urging end portion 522 are respectively located on the left side and the right side, which are opposite to the existing ratchet wrench, and can satisfy users of different hand accustomed habits.

It should be noted that the stereo configuration of the cam block 51 is not limited to the embodiment disclosed in the embodiment, and has a wide end portion 511 facing the ratchet wheel 4 and a narrow end portion 512 away from the ratchet wheel. And the three-dimensional configuration that the distance between the pushing surfaces 513, 513' and the axis L is greater than the distance between the positioning surfaces 514, 514' and the axis L can achieve the same effect, as shown in FIG. 7 and FIG. A second embodiment of a possible embodiment of the present invention, and a possible third embodiment of an embodiment disclosed in FIGS. 9 and 10 are disclosed.

In this way, the advantages of the new ratchet wrench reversing device can be summarized as follows:

1. The special configuration of the cam wrench 51 of the switching member 5 can not only achieve the same effect as the existing ratchet wrench reversing device, but also make the toggle switch 52 smooth. The reversing position is switched in a manner opposite to the existing ratchet wrench reversing device to satisfy different hand habits or users using different dominant hands.

2. The new ratchet wrench reversing device can achieve the purpose of redirection only by changing the three-dimensional configuration of the cam block 51. Compared with the existing reversing ratchet wrench reversing device, the component structure is simple and easy to manufacture.

In addition, the new type of ratchet wrench reversing device only makes structural changes and improvements for the three-dimensional configuration of the cam block 51, and does not need to add any components or replace old components, so most of the components can directly The components of the existing ratchet wrench reversing device are manufactured and assembled similarly to the existing ratchet wrench reversing device, and the production cost and technical threshold can be reduced.

In summary, with the special configuration of the cam block 51, the present invention can change the steering of the ratchet wrench 3 with a simple component under a minimum moving range, which not only satisfies the user with different handwriting habits, but also manufactures In the production, the components of the existing ratchet wrench reversing device can be directly applied, and the cost and technical threshold of manufacturing and assembly are both low, so the purpose of the present invention can be achieved.

However, the above description is only for the embodiments of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent changes and modifications made by the present patent application scope and the contents of the patent specification are still It is within the scope of this new patent.

3‧‧‧ Ratchet Wrench

31‧‧‧ head

311‧‧‧The wall

312‧‧‧ 容容

4‧‧‧ratchet

41‧‧‧ ratchet

5‧‧‧Switching parts

51‧‧‧ cam block

511‧‧‧ wide end

512‧‧‧ narrow end

513’‧‧‧

514‧‧‧ positioning surface

52‧‧‧Toggle switch

521‧‧‧ pivot end

522‧‧‧Toggle end

6‧‧‧Left block

7‧‧‧Right block

8‧‧‧Flexible parts

L‧‧‧ axis

Claims (5)

A ratchet wrench reversing device is adapted to be mounted on a pocket defined by a head of a ratchet wrench, the ratchet wrench reversing device comprising: a ratchet wheel pivotally disposed on the head of the ratchet wrench And including a ratchet portion located in the pocket, and a driving portion that is coupled to the ratchet portion and protrudes from the pocket; a switching member pivotally disposed on the ratchet wrench about an axis a head portion, and includes a cam block located in the pocket, and a toggle switch coaxially coupled to the cam block and protruding from the pocket; and a left flapping block The pocket is located on the left side of the cam block and optionally engages with the ratchet portion; and a right flap is pivoted on the pocket and located on the right side of the cam block, and is tilted with the left The block is selectively engaged with the ratchet portion, and the cam block of the switching member has two pushing surfaces respectively corresponding to the left and right swaying blocks and adjacent to the ratchet wheel, and the two respectively corresponding to the left and right swaying blocks and away from each other a positioning surface of the ratchet, the toggle switch is rotatable about the axis relative to the head And swinging between a reversing position, wherein the toggle switch swings to the left side, and interlocks the cam block to push the right swaying block against the pushing surface of the right swaying block away from the a ratchet portion, at which time the left flap abuts against the corresponding positioning surface and engages with the ratchet portion, the ratchet can rotate in a clockwise direction unidirectionally, and in the reverse position, the toggle switch swings to Right side, and interlocking the cam block to push the pushing surface of the left swaying block against the left swaying block away from the ratcheting portion At this time, the right swaying block abuts against the corresponding positioning surface and engages with the ratchet portion, and the ratchet can rotate in a counterclockwise direction unidirectionally. The ratchet wrench reversing device of claim 1, wherein a distance between the pushing surface of the switching member and the axis is greater than a distance between the positioning surface and the axis. The ratchet wrench reversing device according to claim 1 or claim 2, wherein the cam block of the switching member has a wide end portion facing the ratchet portion, and a distance away from the ratchet portion, and the maximum width is smaller than the A narrow end portion of a maximum width of the wide end portion, the pushing surface is formed at the wide end portion, and the positioning surfaces are formed at the narrow end portion. The ratchet wrench reversing device according to claim 1, wherein the toggle switch of the switching member has a pivot end portion of a shaft disposed at a head of the ratchet wrench, and a pivot end portion of the shaft pivot away from the ratchet The direction extends and is slidable about the pivot end of the head about the pivot end between the forward position and the reverse position, and the cam block is coupled to the pivot end. The ratchet wrench reversing device of claim 1, the head of the ratchet wrench further comprising a reciprocating device around the ratchet wrench and surrounding a peripheral wall defining the receiving slot, the ratchet wrench reversing device further comprising two respectively The peripheral wall and the left and right swaying blocks respectively generate an elastic member for elastically restoring the left and right swaying blocks toward the switching member.