CN2350166Y - ratchet drive mechanism - Google Patents

Abstract

A ratchet drive mechanism includes a body, an adjustment ring and a coupling body. The pivoting seat of the body is provided with a pawl which extends outwards, and the two pawls can extend into the adjusting groove of the adjusting ring and can clamp the inner gear ring on the combined body. The direction in which the detent can move is adjusted by the adjusting ring, and the detent has better strength, so that larger torque force can be provided.

Description

ratchet drive mechanism

The utility model relates to a transmission device, in particular to a ratchet drive mechanism capable of providing relatively large torque.

As shown in Figures 11 to 13, it is an existing ratchet mechanism for the screwdriver handle 8, which is provided with a joint 82 at the bottom of the handle 81, the joint 82 can be connected to the screwdriver bit 83, and the screwdriver bit with different functions can be replaced at any time 83. The ratchet mechanism 84 of this kind of screwdriver shank is to be provided with two clamping pieces 851 that can clamp the tooth portion 821 of the joint 82 in different directions respectively in the adjusting piece 85, because the locking piece 851 is a thinner sheet body, so when When the applied force of the shank 81 is relatively large, it will often bend, resulting in slippage, and even damage to the handle 8 of the screwdriver.

The main purpose of this utility model is to provide a ratchet drive mechanism to solve the above-mentioned problems. The adjustable direction of the pawl can be adjusted by the adjustment ring, and the pawl is arranged in the slot of the body to have better strength. Available for high torque.

The purpose of this utility model is achieved by the following technical solutions.

A ratchet drive mechanism, characterized in that it includes: a body, one end of which has a circular pivot seat, one side of the periphery of the pivot seat has a stop body, and the periphery of the pivot seat has two outer ends A hollow slot, a pawl is respectively inserted into the two slots, and the outer end of the pawl has a first section and a second section, and the two pawls are respectively supported by a spring located in the slot push outward; an adjustment ring is sleeved on the outside of the pivot seat of the body, the inner side of the adjustment ring has a slot for clamping the block body, and the inside of the adjustment ring has two latches respectively The first section of the outer end extends into the adjustment groove, and the two adjustment grooves respectively have a guide slope; a combination body is pivotally arranged on the pivot seat of the main body, and the combination body has a set on the outside of the pivot seat and on the The inner toothed ring at one end of the adjustment ring has a plurality of teeth that can be interlocked with the second section of the outer end of the pawl on the inner side of the inner toothed ring.

The purpose of this utility model can also be further realized by the following technical measures.

On the axis of the body, there is an axis hole through the top and bottom ends, and a screw is inserted into the axis hole of the body to pivotally connect with the combined body. The inner ends of the two pawls on the body respectively have a recess for accommodating a spring. One end of the body has a connecting portion combined with the handle. The blocking body on the body is a steel ball, and the steel ball is pushed by a push spring arranged in the groove of the pivot seat. The first section of the outer end of the two pawls on the body protrudes slightly outward than the second section. One end of the combined body has a socket portion which can be inserted into a tool.

Concrete structure of the present utility model is provided in detail by following embodiment and accompanying drawing thereof.

Fig. 1 is a perspective view of the first embodiment of the utility model.

FIG. 2 is an exploded perspective view of FIG. 1 .

Fig. 3 is a III-III sectional view shown in Fig. 1 .

Fig. 4 is a schematic diagram (1) of the use state of the section A-A shown in Fig. 3 .

Fig. 5 is a schematic diagram of the use state of the section B-B shown in Fig. 3 .

Fig. 6 is a schematic view (2) of the use state of the section A-A shown in Fig. 3 .

Fig. 7 is a schematic view (3) of the use state of the section A-A shown in Fig. 3 .

Fig. 8 is an exploded perspective view of the second embodiment of the present invention.

Fig. 9 is an exploded perspective view of the third embodiment of the present invention.

Fig. 10 is a combined sectional view of the third embodiment of the present invention.

Fig. 11 is a three-dimensional schematic diagram of a conventional ratchet mechanism applied to a screwdriver handle.

Fig. 12 is an exploded perspective view of a conventional ratchet mechanism.

Fig. 13 is a combined sectional view of a conventional ratchet mechanism.

Please refer to Fig. 1 to Fig. 7, shown in the figure is the structure of the selected first embodiment of the utility model, and this embodiment is installed on the sub-handle 4 together, comprises:

A main body 1 has a shaft hole 11 extending through two ends on its axis. One end of the main body 1 has a connecting portion 12 combined with the screwdriver handle 4 . The other end of the main body 1 has a cylindrical pivot seat 13 . One side of the pivot seat 13 has a groove 18, and a push spring 19 is arranged in the groove 18. The outer end of the push spring 19 pushes a steel ball 14, and the other side of the pivot seat 13 In addition, there are slots 15 with hollow outer ends on two sides of the shaft hole 11 , and a detent 16 is respectively inserted into the two slots 15 . The inner ends of the two latches 16 have a recess 161 respectively, and a spring 17 that can push them outward is provided in the recess 161, and the outer ends of the two latches 16 have a first segment 162 and a second segment. 163, and the first section 162 protrudes outward from the second section 163.

An adjustment ring 2 is sheathed on the outside of the pivot seat 13 of the body 1. One side of the inner edge of the adjustment ring 2 has a slot 21 for clamping the steel ball 14, and the inner side of the adjustment ring 2 has two respectively for The first section 162 of the latch 16 extends into the adjustment groove 22 , and the adjacent sides of the two adjustment grooves 22 respectively have a guiding slope 23 .

A combined body 3, which is pivotally mounted on the body 1 with a screw 31 passing through the shaft hole 11, the combined body 3 has an inner gear ring 32 set on the outside of the pivot seat 13 and abutted against one end of the adjusting ring 2, The inside of the inner gear ring 32 has a plurality of teeth 34 that can be interlocked with the second section 163 of the detent 16. In addition, the combined body 3 has a socket 33, and the socket 33 is used to socket the bit of a screwdriver. 41.

Please refer to Fig. 2 to Fig. 7, when using the utility model, first insert the screwdriver head 41 in the sleeve part 33 of the combined body 3, and turn the adjusting ring 2 to adjust the direction to be tightened, if clockwise For tightening. In FIG. 4 , the adjustment ring 2 is rotated counterclockwise, so that the steel ball 14 of the body 1 is inserted into the slot 21A on the right side of the adjustment ring 2 , and the detent 16 on the right side is pressed against the slope 23 of the adjustment slot 22 Back, fully retracted into the slot 15, so that it does not touch the tooth portion 34 inside the combined body 3. As shown in FIG. 5 , when the user rotates the screwdriver handle 4 clockwise, the tooth portion 34 of the combined body 3 will be against the left side of the left side of the latch 16 , and the force of the tooth portion 34 on the latch 16 will be The component force that it pushes out, so this detent 16 can not be withdrawn in the slot 16, and forms the effect of interlocking, like this, will drive combined body 3 to rotate synchronously, and thereby tighten screw (not shown in the figure) . And when the user rotates the screwdriver handle 4 counterclockwise, the outer end surface of the left pawl 16 is against the tooth portion 32 of the combined body 3, and the tooth portion 32 produces a component force to push the pawl 16 back, so that The detent 16 can be pushed into the slot 15, so that the two will not be stuck with each other, so the combination body 3 will not follow the rotation, so as to achieve the ratchet effect of one-way driving.

If the user wants to make the combined body 3 and the screwdriver handle 4 synchronously rotate clockwise and counterclockwise, the adjustment ring 2 is rotated so that the steel ball 14 is inserted into the middle slot 21B, and the two pawls 16 can be rotated. Extend into the adjustment groove 22 respectively (as shown in Figure 7). In this way, the two detents 16 can hold the tooth portion 32 of the combined body 3 respectively when rotating clockwise and counterclockwise, so as to achieve the effect of completely synchronous rotation.

It is especially important that: most of the above-mentioned two pawls 16 are accommodated in the slot 15, only a small part protrudes, and the bending moment it bears is very small, so the utility model has greater bending strength, so It can be used in occasions that require relatively large torque, and therefore the utility model can be used on tools such as wrenches.

Referring to Fig. 8, the second embodiment of the present utility model is to install a clutch mechanism 51 with torque control function on the body 5, and a coupling rod 52 is provided on the clutch mechanism 51, which can be connected with the coupling rod 52. The screwdriver handle 53 is combined so that the screwdriver can control the torque when in use and avoid damage to screws or screw holes.

Please refer to Figs. 9 and 10, the third embodiment of the present utility model has a sleeve portion 62 on the side opposite to the pivotal seat 61 of the body 6, and one side of the pivotal seat 61 has a protrusion 64, And the two sides of this pivotal seat 61 respectively have a slot 65 extending toward the center, respectively insert a latch 66 and a spring 67 that can resist the latch 66 in the two slots 65, and the adjustment ring 71 is set There is a sliding groove 73 for accommodating the protrusion 64. One end of the combined body 74 has an inner gear ring 75 which can be interlocked with the detent 66 in one direction, and the other end of the combined body 74 is combined with a torque control function. Clutch mechanism 76.

Claims (7)

1. a ratchet driving mechanism is characterized in that, comprising:

One body, the one end has the pin joint seat of a circle, periphery one side of this pin joint seat has a block body, and this pin joint seat periphery has the logical empty slot of two outside sides, insert a pallet respectively in this two slot, the outboard end of this pallet then has one first section and one second section, and this two pallet is also outwards pushed by a spring of being located in the slot respectively;

One adjusts ring, be set in the pin joint seat outside of body, inner edge one side of this adjustment ring has one in order to block the draw-in groove of block body, has two respectively for first section adjustment groove that stretches into of pallet outboard end and this adjustment ring is inboard, and this two adjustment groove has a guide ramp respectively;

One combination is hubbed on the pin joint seat of body, and this combination has one and is set in the pin joint seat outside and at the internal gear of adjusting ring one end, and this internal gear inboard has most the tooth portions that can block mutually with second section of pallet outboard end.

2. ratchet driving mechanism according to claim 1 is characterized in that, has an axis hole that runs through top and bottom ends on the axis of this body, penetrates a screw and combination in the axis hole of this body and articulates.

3. ratchet driving mechanism according to claim 1 is characterized in that the medial extremity of two pallets has the recess that holds spring respectively on this body.

4. ratchet driving mechanism according to claim 1 is characterized in that, but this combination one end has the socket part of an insertion tool.

5. ratchet driving mechanism according to claim 1 is characterized in that, this body one end has a linking part that combines with lever.

6. ratchet driving mechanism according to claim 1 is characterized in that, the block body on this body is a steel ball, and this steel ball is promoted by a goring push spring that is located in the pin joint seat groove.

7. ratchet driving mechanism according to claim 1 is characterized in that, first section of two pallet outboard ends on this body slightly outwards protrudes than second section.

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