TWM483150U - Ratchet driving mechanism for hand tool - Google Patents

Description

Ratchet drive mechanism for hand tools

This creation relates to a ratchet drive mechanism, and more particularly to a ratchet drive mechanism for a hand tool.

Conventional screwdrivers are assembled by attaching a rod to a handle to provide a rotational coupling of a locking fixture such as a screw. In order to achieve ease of use, various ratchet drive mechanisms have been developed to provide control of the screwdriver in the driving direction, thereby facilitating the rotation of the locks such as screws.

However, the current ratchet drive mechanism utilizes two thin sheet-like bodies for use with gears composed of a plurality of ratchets which have only one edge end face and ratchet teeth. However, it cannot withstand a large torque, that is, the user cannot apply too much torque, otherwise the sheet is easily damaged. In addition, when the sheet body is engaged with the ratchet, it is restricted by a positioning member and an adjusting ring. When the torque is applied to perform the rotation, the adjusting ring is easily returned or rotated due to the frictional force. The position, which causes the positioning of the positioning member to be separated from the positioning hole, is inaccurate, and causes the problem that the screwdriver cannot be operated normally, and needs to be overcome.

One object of the present invention is to provide a ratchet drive mechanism for a hand tool that allows the ratchet element to be accurately positioned by the positioning unit on the drive shaft during rotation of the drive shaft drive ratchet element.

In order to achieve the above object, the present invention provides a ratchet driving mechanism for a hand tool, comprising a driving component, an adjusting ring and a ratchet component, the driving component comprising a driving shaft, a positioning unit and a plurality of clamping units. The positioning unit and each of the latching units are mounted on the driving shaft, and each of the latching units comprises a latching plate and an elastic body sandwiched between the driving shaft and the latching plate; the adjusting ring The positioning unit and a part of each of the latching units are sleeved on the driving shaft, and the adjusting ring is provided with a plurality of pockets for selectively positioning the positioning unit and a pocket for the movement of the latching plates. The ratchet member is sleeved on the drive shaft corresponding to another portion of each of the latch units, and the ratchet member is provided with a plurality of ratchets for engaging the latch plates.

The creation also has the following effects: the rotation direction of the adjustment ring is the same as the rotation direction of the drive shaft driving ratchet element, and the ball of the positioning unit can be taken out from the pocket during the operation of the rotation. In turn, the positioning stability can be ensured. The simple structure is not only easy and simple in the processing and subsequent assembly and maintenance of components.

10‧‧‧Drive components

11‧‧‧Drive shaft

111‧‧‧Fixed section

112‧‧‧ Ribs

113‧‧‧Rotary segment

114‧‧‧Blind hole

115‧‧‧Slots

12‧‧‧ Positioning unit

121‧‧‧Beads

122‧‧‧Compression spring

13‧‧‧Carmen unit

131‧‧‧Carton board

132‧‧‧ trench

133‧‧‧Abutment block

134‧‧‧ Elastomers

20‧‧‧Adjustment ring

21‧‧‧ outer ring

211‧‧ ‧ ribs

22‧‧‧ Inner ring

221‧‧‧ pocket

222‧‧‧ 容容

30‧‧‧ratchet components

31‧‧‧ head

311‧‧‧ center hole

312‧‧‧ ratchet

32‧‧‧ neck

321‧‧‧ jack

40‧‧‧ screw components

8‧‧‧Handle

The first figure is an exploded view of the ratchet drive mechanism of the present invention.

The second figure is a combined appearance of the ratchet drive mechanism of the present invention.

The third figure is a combined sectional view of the ratchet drive mechanism of the present invention.

The fourth figure is a 4-4 cross-sectional view of the third figure.

The fifth figure is a 5-5 cross-sectional view of the third figure.

The sixth figure is a 6-6 cross-sectional view of the third figure.

The seventh figure is a combination diagram of the creation of the hand tool.

The eighth figure is a cross-sectional view of the use state after the adjustment ring of the present creation is rotated counterclockwise (1).

The ninth figure is a cross-sectional view of the use state after the adjustment ring of the present creation is rotated counterclockwise (2).

The tenth figure is a sectional view of the use state after the adjustment ring of the present creation is rotated counterclockwise (3).

The eleventh figure is a sectional view of the use state after the adjustment ring of the present creation is rotated clockwise (1).

The twelfth figure is a cross-sectional view of the state of use of the adjustment ring of this creation after clockwise rotation (2).

The thirteenth figure is a cross-sectional view of the state of use of the adjustment ring of this creation after clockwise rotation (3).

The detailed description and technical content of the present invention are described below with reference to the drawings, but the drawings are only for reference and explanation, and are not intended to limit the creation.

Referring to Figures 1 to 3, the present invention provides a ratchet drive mechanism for a hand tool, which mainly includes a drive assembly 10, an adjustment ring 20 and a ratchet member 30.

The driving assembly 10 mainly includes a driving shaft 11, a positioning unit 12 and a plurality of locking units 13. The driving shaft 11 has a fixing portion 111 and a rotating portion 113 extending axially along the fixing portion 111. The fixing portion 111 is a The hollow cylinder has a plurality of longitudinal ribs 112 protruding from the outer surface thereof. The rotating section 113 is also a hollow cylinder. A blind hole 114 is disposed at an end adjacent to the fixed section 111, and the back side of the blind hole 114 is rotated. The movable section 113 is provided with two slots 115. The two slots 115 are disposed at intervals in parallel with each other. The slot 115 of this embodiment has a rectangular shape, but is not limited by such a shape.

The positioning unit 12 mainly includes a ball 121 and a compression spring 122. The ball 121 and the compression spring 122 are received in the blind hole 114, and the compression spring 122 is used to push the ball 121 toward the outside of the blind hole 114. .

Each of the latching units 13 is respectively received in the slot 115. The latching unit 13 includes a latching plate 131 and an elastic body 134. The latching plate 131 has a substantially U-shape and a slot is formed at a middle portion thereof. The groove 132, and an abutting block 133 is protruded from the upper end of the closed end of the latching plate 131. The elastic body 134 can be a spiral compression spring, which is received in the groove 132 of the latching plate 131 for resisting The cassette plate 131 moves toward the outside of the slot 115.

The adjusting ring 20 is a hollow ring, and the upper part of the corresponding positioning unit 12 and each of the latching units 13 is sleeved on the driving shaft 11 . The adjusting ring 20 has an outer ring body 21 and a inner side formed on the outer ring body 21 . The inner ring body 22 has a rib 211 extending outwardly from the surface of the outer ring body 21, three recesses 221 are spaced apart from the inner circumferential surface of the inner ring body 22, and a cavity is formed in the opposite area of each of the recesses 221 222, wherein the ball 121 of the positioning unit 12 is elastically resisted by the compression spring 122, and the ball 121 is selectively positioned in the aforementioned pocket 221, and the latching plate 131 is transmitted through the elastic body 134. The elastic thrust is pushed so that the abutting block 133 can move in and out corresponding to the aforementioned pocket 222.

The ratchet member 30 is sleeved on the drive shaft 11 and overlaps with the adjustment ring 20 corresponding to the lower portion of each of the latching units 13 . The ratchet member 30 has a head portion 31 and a neck portion 32 extending axially from the head portion 31. A central hole 311 is defined in the middle of the head 31, and a plurality of ratchet teeth 312 are annularly disposed on the inner wall surface of the central hole 311. The ratchet teeth 312 are driven by the lower portion of each of the latching plates 131, and the center of the neck portion 32 is provided. There is a regular hexagonal socket 321 for plugging together a sub-head (not shown).

Referring to the fourth to sixth figures, in the combination, the positioning unit 12 and each of the latching units 13 are respectively inserted into the blind holes 11 and the slots 115 of the rotating section 113, and the adjusting ring 20 is turned down from the bottom. The upper part is inserted into the rotating section 113, and the ball 121 is pushed by the compression spring 122 to be caught in the intermediate pocket 221 (as shown in the fourth figure). Each of the latching plates 131 is pushed by the elastic body 134 so that the abutting block 133 is accommodated in the receiving groove 222, and the abutting block 133 is elastically attached to the inner wall surface of the receiving groove 222 (as shown in FIG. 5). ). Then, the lower portion of the rotating portion 113 is placed in the center hole 311 of the ratchet member 30, and the lower portion of the latching plate 131 and the ratchet teeth 312 are engaged with each other through the latching plate 131 by the elastic body 134 (eg, Six figures). Finally, a screwing member 40 is sequentially inserted into the fixing portion 111 and the rotating portion 113, and then screwed into the screw holes of the ratchet member 30 to be combined (as shown in the third figure), so as to combine a ratchet drive. mechanism.

When the ball 121 is positioned in the intermediate pocket 221, regardless of whether the rotating segment 113 rotates counterclockwise or rotates clockwise, it can be driven through the lower portion of the latching plate 131 and the ratchet teeth 312. The ratchet element 30 is used to drive the screwdriver head to rotate counterclockwise or clockwise.

Referring to Figures 7 to 10, the ratchet drive mechanism of the present invention can be combined with a handle 8 to form a hand tool. The hand tool of this embodiment is a screwdriver, but is not limited by this type. In order to operate in one direction in response to actual work requirements, the adjustment ring 20 is first rotated counterclockwise so that the ball 121 of the positioning unit 12 is positioned in the left pocket 221 (as shown in FIG. 8). The relationship between the left latching plate 131 and the adjusting ring 20 and the ratchet member 30 is substantially similar to that of the first embodiment. The right latching plate 131 moves the abutting block 133 out of the pocket 222 due to the rotation of the adjusting ring 20, and forces the card. The seesaw 131 is retracted into the slot 115 (as shown in the ninth figure).

When the rotation section 113 is rotated counterclockwise, the lower portion of the left side clamp plate 131 and the ratchet teeth 312 are engaged with each other (as shown in FIG. 10), and the ratchet element 30 is driven to drive the screwdriver head to reverse. The hour hand rotation operation; conversely, when the rotation segment 113 is rotated in the clockwise direction, the lower portion of the left side jaw plate 131 is free from the restriction of the ratchet teeth 312 to cause idling. Since the rotation positioning direction of the adjusting ring 20 is the same as the rotation direction of the driving shaft 11 driving the ratchet member 30, the ball 121 of the positioning unit 12 can be taken out from the pocket 221, thereby being accurately positioned in the driving. Axis 11.

Referring to the eleventh to thirteenth figures, the adjusting ring 20 is rotated counterclockwise so that the ball 121 of the positioning unit 12 is positioned in the right pocket 221 (as shown in FIG. 11). The relationship between the right latching plate 131 and the adjusting ring 20 and the ratchet member 30 is substantially similar to that of the first embodiment described above, and the left latching plate 131 moves the abutting block 133 out of the pocket 222 due to the rotation of the adjusting ring 20, while forcing the cassette The plate 131 is retracted into the slot 115 (as shown in Fig. 12).

When the rotating segment 113 is rotated in the clockwise direction, the lower portion of the right click plate 131 and the ratchet teeth 312 are engaged with each other (as shown in FIG. 13), and the ratchet member 30 is driven to drive the screwdriver head. The counterclockwise rotation operation; conversely, when the rotation section 113 is rotated counterclockwise, the lower portion of the right side jaw plate 131 is free from the restriction of the ratchet teeth 312 to cause idling.

In summary, the ratchet drive mechanism for hand tools of this creation can achieve the intended purpose of use, and solve the lack of knowledge, and because of its novelty and progress, it fully meets the requirements of new patent applications, and converts If the patent law is filed, please check and grant the patent in this case to protect the rights of the creator.

10‧‧‧Drive components

11‧‧‧Drive shaft

111‧‧‧Fixed section

112‧‧‧ Ribs

113‧‧‧Rotary segment

114‧‧‧Blind hole

115‧‧‧Slots

12‧‧‧ Positioning unit

121‧‧‧Beads

122‧‧‧Compression spring

13‧‧‧Carmen unit

131‧‧‧Carton board

132‧‧‧ trench

133‧‧‧Abutment block

134‧‧‧ Elastomers

20‧‧‧Adjustment ring

21‧‧‧ outer ring

211‧‧ ‧ ribs

22‧‧‧ Inner ring

221‧‧‧ pocket

222‧‧‧ 容容

30‧‧‧ratchet components

31‧‧‧ head

311‧‧‧ center hole

312‧‧‧ ratchet

32‧‧‧ neck

321‧‧‧ jack

40‧‧‧ screw components

Claims (10)

A ratchet drive mechanism for a hand tool, comprising:
A driving component comprises a driving shaft, a positioning unit and a plurality of clamping units, wherein the positioning unit and each of the locking units are mounted on the driving shaft, and each of the locking units comprises a clamping plate and a clamp An elastic body between the drive shaft and the latching plate;
An adjusting ring, a part of the positioning unit and each of the latching units is sleeved on the driving shaft, the adjusting ring is provided with a plurality of recesses for the positioning of the positioning unit, and for each of the latching plates to move in and out And a ratchet member, the other portion corresponding to each of the latch units is sleeved on the drive shaft, and the ratchet member is provided with a plurality of ratchets for engaging the latch plates. A ratchet driving mechanism for a hand tool according to claim 1, wherein a rotational positioning direction of the adjustment ring is the same as a rotation direction of the drive shaft to drive the ratchet member. The ratchet drive mechanism for a hand tool according to claim 2, wherein the drive shaft has a fixed section and a rotating section extending axially along the fixed section, and the rotating section is provided with the card A slot in which the unit is housed. The ratchet drive mechanism for a hand tool according to claim 3, wherein the positioning unit comprises a ball and a compression spring, the rotation section is provided with a blind hole, and the ball and the compression spring are accommodated in the blind hole. Inside. The ratchet driving mechanism for a hand tool according to claim 4, wherein the adjusting ring has an outer ring body and an inner ring body formed on the inner side of the outer ring body, and a protruding bar extends on a surface of the outer ring body. A plurality of pockets are spaced apart on the inner circumferential surface of the inner ring body, and each of the pockets is for the ball to be embedded and positioned. The ratchet driving mechanism for a hand tool according to claim 2, wherein the latching plate has a U shape, and a groove is formed in the latching plate, and the elastic body is received in the groove. The ratchet drive mechanism for a hand tool according to claim 6, wherein the latching plate protrudes from an abutting block, and the latching plate is pushed by the elastic force of the elastic body so that the abutting block corresponds to the The pocket of the adjustment ring is moved in and out. The ratchet drive mechanism for a hand tool according to claim 2, wherein the ratchet member has a head and a neck extending axially from the head, and a central hole is provided in the head, each of the ratchets An annular cloth is disposed on the inner wall of the center hole. A ratchet drive mechanism for a hand tool according to claim 8, wherein a center of the neck is provided with a regular hexagonal receptacle. A ratchet driving mechanism for a hand tool according to claim 2, further comprising a screwing member that passes through the driving assembly to be coupled with the ratchet member.