TW201941874A - Toggle device for ratchet wrench including a toggle member, a spring and a linkage member - Google Patents

Abstract

A toggle device for a ratchet wrench is provided. A rotation direction of a ratchet of the ratchet wrench can be changed through the interaction between a ratchet block and the toggle device. The toggle device includes a toggle member, and a spring and a linkage member disposed therein. The linkage member is extended into a detent groove of the ratchet block by an elastic force of the spring. The toggle member includes a detent block, and each of two sides of the detent block is provided with a detent corner. When the toggle member is toggled to the left and right, a thrust is applied to the ratchet block through the detent corner, so as to ensure that the ratchet block follows the toggle member with excellent responsiveness in the position change.

Description

Switching device of ratchet wrench

The present invention relates to a ratchet wrench, and more specifically, it relates to a switch device of a reversible ratchet wrench.

As shown in the eighth, ninth and tenth figures, the conventional reversible ratchet wrench is generally structured to include a ratchet 2 and a ratchet block 3 inside the wrench head 1, and a switching unit 4 for controlling the ratchet block. 3. The switching unit 4 generally includes a toggle member 5 and a spring 6 and a linkage member 7 provided therein. The linkage member 7 is protruded out of the toggle member 5 by the elastic force of the spring 6 and protrudes into the top groove 8 of the ratchet block 3. The left-right turning of the dial 5 causes corresponding changes in the directions and positions of the link 7 and the ratchet block 3, thereby changing the direction of rotation of the ratchet wheel 2.

The above conventional examples have the following problems:

First, the key to whether the linkage member 7 can successfully dial the ratchet block 3 when the dial member 5 rotates is the spring 6 and its elastic force. In the conventional example, when the spring 6 becomes the main key for receiving and applying force, the problem of elastic fatigue is easy to occur. When the force value of the spring 6 is weakened, the linking member 7 cannot provide an appropriate pressing force on the ratchet block 3, as can be seen from the eighth to tenth figures. When the toggle member 5 is turned from left to right, the linking member 5 7. The ratchet block 3 has not been successfully dialed from the left to the right. The toggle member 5 only slides along the top groove 8 of the ratchet block 3. The switching unit 4 is ineffective and the ratchet reversing function is invalid.

Second, when the force value of the spring 6 is weakened, and the linking member 7 is unable to push the ratchet block 3, the ratchet block 3 cannot be effectively restricted by the linking member 7, and the acting force or reaction force of the ratchet wrench may be Passed through the ratchet wheel 2 to the ratchet block 3, so that the ratchet wheel 2 may cause improper displacement of the ratchet block 3, and the ratchet wrench may suddenly switch improperly, making it impossible to effectively control the work of the ratchet wrench Direction and direction of rotation reset.

In order to solve the above problems, the present invention proposes a structural solution that can ensure that the linking member effectively activates the ratchet block.

The invention relates to a ratcheting device for a ratchet wrench. The ratcheting wrench comprises a ratchet wheel and a ratchet block provided on a wrench head, the ratchet and the ratchet teeth of the ratchet block mesh with each other; A toggle member in a swivel space of the wrench head, a spring and a linkage member provided inside the toggle member; the linkage member protrudes from the toggle member and extends into the linkage member by the spring force of the spring. A ratchet block is provided in a top snap groove; it is characterized in that the toggle device further includes a top snap structure; the top snap structure includes contact angles formed on both sides of the top snap slot and the dial A top stopper block, each side of the top stopper block has a top stopper angle; when the toggle member is turned to the left and right, the dial member applies a thrust force to the top stopper slot through the top stopper angle And the contact angle are transmitted to the ratchet block.

The effect of the present invention is that the turning force of the toggle member is transmitted to the ratchet block through the top latch angle applied to the side wall of the top latch slot and the contact angle.

When the toggle member is turned, two thrust forces act on the ratchet block, one of which is applied to the ratchet block by the link member through the groove wall of the top latch groove, and the other thrust is caused by The top stop block is applied to the ratchet block through the side wall of the top stop slot and the contact angle. Two thrusts act on the ratchet block to ensure that the ratchet block follows the toggle to have an excellent response in changing the orientation, The ratchet reversing function of the ratchet wrench is guaranteed.

When the top stop block pushes the ratchet block on one side, the other side of the top stop block does not interfere with the ratchet block to ensure that the lateral thrust of the top stop block is completely applied to the ratchet. The sides of the block.

The invention specifically disperses the stress of the spring, which can delay the time when elastic fatigue occurs, and maintain its proper elastic force value for a long time.

[Prior art]

1‧‧‧ wrench head

2‧‧‧ Ratchet

3‧‧‧ ratchet block

4‧‧‧ switch unit

5‧‧‧ Actuator

6‧‧‧ spring

7‧‧‧ Linkage

8‧‧‧ top switch slot

[this invention]

10‧‧‧ wrench head

11‧‧‧ Ratchet Space

12‧‧‧ Ratchet

13‧‧‧Tooth block space

14‧‧‧ ratchet block

15‧‧‧turning space

16‧‧‧Top switch slot

161‧‧‧left wall

162‧‧‧Right wall

20‧‧‧Pushing device

21‧‧‧Pusher

22‧‧‧Spring

23‧‧‧ Linkage

24‧‧‧ lever

30‧‧‧ Top stop structure

31‧‧‧Top stop block

32‧‧‧Top stop angle

33‧‧‧ contact angle

40‧‧‧Seal

41‧‧‧ buckle

The first figure is an exploded perspective view of a ratchet wrench according to the present invention.

The second figure is one of the combined cross-section and action diagram of the ratchet wrench of the present invention.

The third figure is the second combined sectional view and action diagram of the ratchet wrench according to the present invention.

The fourth figure is the third combined cross-section and action diagram of the ratchet wrench according to the present invention.

The fifth figure is the fourth combined sectional view and action diagram of the ratchet wrench according to the present invention.

The sixth figure is the fifth combined cross-section and action diagram of the ratchet wrench according to the present invention.

The seventh figure is an enlarged view of the circled area of the third figure.

The eighth figure is one of the cross-sectional view and the action diagram of the conventional reversible ratchet wrench.

The ninth figure is the second sectional view and action schematic diagram of the conventional reversible ratchet wrench.

The tenth figure is the third sectional view and action schematic diagram of the conventional reversible ratchet wrench.

In order to facilitate the description of the central idea of the present invention in the above-mentioned summary of content, specific embodiments are described below. Various objects in the embodiments are depicted in proportions, sizes, deformations, or displacements suitable for illustration, rather than in proportion to actual elements, which will be described together.

As shown in the first and second figures, the reversible ratchet wrench of the present invention includes a cover plate 40 and a ring A ratchet 12 assembled in a ratchet space 11 of the wrench head 10 with a buckle 41, a ratchet block 14 provided in a tooth block space 13 of the wrench head 10, the ratchet 12 and ratchet teeth of the ratchet block 14 Engage each other.

The wrench head 10 further includes a toggle device 20. The toggle device 20 includes a toggle member 21, a spring 22 and a linkage member 23 provided in the toggle member 21. The toggle member 21 is rotatably positioned in a swivel space 15 of the wrench head 10. The toggle member 21 has a lever 24 located outside the wrench head 10 for users to contact. And the dial 21 is turned, and the dial 21 can turn left or right in the swivel space 15 by the user's dial (such as the second figure to the sixth figure). The linkage member 23 is protruded out of the toggle member 21 by the elastic force of the spring 22 and protrudes into a top groove 16 of the ratchet block.

As shown in the third and seventh figures, the ratchet wrench further includes a top stop structure 30. The top stop structure 30 includes a top stop block 31 formed on the toggle member 21, and two top stop angles 32 are formed on both sides of the top stop block 31. The top stop structure 30 further includes a circular arc-shaped contact angle 33 formed on both sides of the top stop slot 16.

As shown in the second to sixth figures, the left and right movement of the toggle member 21 causes corresponding changes in the directions and positions of the link member 23 and the ratchet block 14, thereby changing the rotation direction of the ratchet wheel 12. According to the view direction and the sequence of the second to sixth figures, the toggle member 21 is turned from left to right, and vice versa. As shown in the second figure, in a stationary state, the linking member 23 pushes the left side wall 161 of the top latching slot 16, the ratchet block 14 is located on the left side of the tooth block space 13, and the ratchet wheel 12 can rotate clockwise. As shown in the third and seventh figures, when the toggle member 21 is turned to the right, the top latch angle 32 on the right side of the top latch block 31 pushes against the right wall 162 of the top latch slot 16, and the ratchet block 14 has conformed. Push to the top and there is already a tendency to move to the right. As shown in the fourth figure, the toggle member 21 continues to be turned to the right, the link member 23 slides along the groove wall of the top latch groove 16, and the top latch angle 32 on the right side pushes the contact angle 33 on the right side. The ratchet block 14 moves to the right in response to the ejection. As shown in the fifth figure, when the toggle member 21 continues to be turned to the linkage member 23 to push the ejector slot In the middle of the groove wall of 16, the top stop block 31 does not contact the ratchet block 14. As shown in the sixth figure, when the toggle member 21 is turned to the right, the link member 23 pushes against the right side wall 162 of the top latch slot 16, and the ratchet block 14 is successfully moved to the right of the tooth block space 13. The ratchet wheel 12 can rotate counterclockwise.

When the toggle member 21 is turned, there will be two pushing forces acting on the ratchet block 14, one of which is the elastic force of the spring 22 applied to the ratchet block 14 through the link 23, and the other The pushing force is applied to the ratchet block 14 by the pushing block 31 through the side walls 161, 162 of the pushing slot 16 and the contact angle 33. Two thrust forces act on the ratchet block 14 to ensure that the ratchet block 14 follows the toggle member 21 and has excellent responsiveness in changing the orientation, which ensures that the ratchet wheel 12 reversing function of the ratchet wrench is realized.

Please refer to the second to sixth figures again. When the top stop block 31 pushes the ratchet block 14 on one side, the other side of the top stop block 31 and the ratchet block 14 do not interfere with each other to ensure that The lateral thrust of the top stop block 31 is completely applied to the side of the ratchet block 14.

In the present invention, the top stop block 31 exerts a lateral thrust on the ratchet block 14 through the side walls 161, 162 of the top stop slot 16 and the contact angle 33. This design disperses the force situation of the spring 22. The present invention The spring 22 is the main force- and force-receiving element not described in the conventional example. Therefore, the present invention delays the time when elastic fatigue occurs and maintains its proper elastic force value for a long time. As can be seen from the second, fifth, and sixth figures, when the toggle member 21 is turned from left to right and the ratchet block 14 is successfully moved from left to right, the distance between the top of the top stop block 31 and the ratchet block 14 occurs. Obvious change. To illustrate this change, the horizontal line L1 passes through the top of the link 23, and the horizontal line L2 passes through the top of the top stopper 31. The distance between L1 and L2 in the second picture is d1, and the distance between L1 and L5 in the fifth picture is d1. The distance between L2 is d2, and the distance between L1 and L2 in the sixth figure is d3. From the changes of d1, d2, and d3, it can be inferred that the compression length of the spring 22 will be different, indicating that the spring 22 has a good quality in the present invention. Elastic performance. The hair Ming specifically solved the first problem of the conventional examples.

In addition, when the spring force of the spring 22 is maintained, the linking member 7 can effectively restrain the ratchet block 14 and maintain the position of the ratchet block 14; the force or reaction force of the ratchet wrench cannot be transmitted through the ratchet 12 Up to the ratchet block 14, the ratchet wrench does not have the problem of improper reversal, so that when the ratchet wrench is operated, its working direction and the direction of rotation reset can be effectively controlled. The present invention specifically solves the second problem of the conventional example.

Claims (2)

The invention relates to a ratcheting wrench shifting device. The ratcheting wrench includes a ratchet wheel and a ratchet block provided on a wrench head, and the ratchet teeth of the ratchet block and the ratchet teeth of the ratchet block mesh with each other. A toggle member in a swivel space of the wrench head, a spring and a linkage member provided inside the toggle member; the linkage member projects from the toggle member and extends into the ratchet by the spring force of the spring. A top snap groove of the block; characterized in that the toggle device further includes a top snap structure; the top toggle structure includes contact angles formed on both sides of the top snap groove, and a A top stopper, each side of the top stopper has a top stopper angle; when the toggle is turned to the left and right, the pusher applies a thrust force to the side wall of the top stopper slot through the top stop angle And the contact angle is transmitted to the ratchet block. The invention relates to a ratcheting wrench shifting device. The ratcheting wrench includes a ratchet wheel and a ratchet block provided on a wrench head, and the ratchet teeth of the ratchet block and the ratchet teeth of the ratchet block mesh with each other. A toggle member in a swivel space of the wrench head, a spring and a linkage member provided inside the toggle member; the linkage member projects from the toggle member and extends into the ratchet by the spring force of the spring. A top snap groove of the block; characterized in that the toggle device further includes a top snap structure; the top toggle structure includes a top snap block formed on the toggle member, and each side of the top snap block has a top When the toggle member is turned to the left or right, the toggle member applies a thrust force to the side wall of the top latch groove through the top toggle angle and then transmits the thrust to the ratchet block.