Ratchet triplex wrench

Abstract

The utility model relates to a kind of ratchet three-pronged wrench, including a three-pronged handle, the three-pronged handle has a main end and two vice ends, the lower end of main rod is equipped with transmission cover, the inside of transmission cover is equipped with a circle transmission gear, transmission cover is covered on function part and central rod is inserted into main rod;A spin circle is covered in transmission cover below on the function part, the inner wall of spin circle is equipped with three gear slots, the front end of function part is equipped with marble and can be selected and clamped in gear slot, so that spin circle has left gear, middle gear, right gear.Affinity effect lies in: the three-pronged wrench of new mechanism, only needs to swing wrench in screwing process, new mechanism can realize one-way transmission;Hand can reciprocate within a relatively small angle, greatly reduce the fatigue feeling of hand, make operation more relaxed;The improvement of this speed can greatly shorten working time.

Description

Technical Field

[0001] This utility model relates to a three-pronged wrench with one-way clutch during screwing, and in particular to an improvement in the clutch structure. Background Technology

[0002] The three-pronged wrench commonly found on the market typically consists of a metal main shaft fixed to the three ends of the handle. The main shaft has slots at its ends, which can be fitted with either Phillips head or slotted wrench heads. In actual use, the user grips the handle and rotates it continuously, relying on the handle to rotate the main shaft, thus tightening or loosening the bolt.

[0003] However, this traditional three-pronged wrench is noticeably inconvenient to operate. In order to position the palm in a convenient position to tighten or loosen bolts smoothly, the user has to frequently loosen and tighten their grip. Moreover, since the main handle and the wrench head are fixed together, the user can only turn the wrench by repeatedly loosening and tightening their grip, making the entire process cumbersome and energy-consuming. Utility Model Content

[0004] In order to overcome the shortcomings of current three-pronged wrenches which are relatively weak, this utility model provides a ratchet three-pronged wrench.

[0005] The technical solution of this utility model to solve its technical problem is as follows: a ratchet three-pronged wrench, including a three-pronged handle, the three-pronged handle having a main end and two auxiliary ends, a metal main tube fixed inside the main end, a central rod in the middle of the main tube, and a functional part at the upper end of the main tube; it also includes a main rod, the upper end of the main rod having a groove, the lower end of the main rod having a transmission cover, the inner side of the transmission cover having a ring of transmission teeth, the transmission cover being fitted onto the functional part and the central rod being inserted into the main rod; a rotating ring is fitted on the functional part below the transmission cover, the inner wall of the rotating ring having three gear slots, and a ball at the front end of the functional part being able to selectively engage one of the gear slots, so that the rotating ring has a left gear, a middle gear, and a right gear; the functional part also has a recessed movable cavity. The movable cavity wall is provided with a left support spring and a right support spring; a rocker block is provided in the movable cavity, with a left pressure block on the left side of the rocker block and a left locking tooth at the top of the left pressure block, and a right pressure block on the right side of the rocker block and a right locking tooth at the top of the right pressure block; the inner side of the rocker block is supported by the left and right support springs; a limiting block is integrally provided on the inner side of the rotating ring, and the rotation of the rotating ring drives the limiting block to move in the movable cavity. When in the left gear, the limiting block presses on the left pressure block of the rocker block, so that the right side of the rocker block is raised, and the right locking tooth pushes against the transmission tooth on the inner side of the transmission cover to the right; when in the right gear, the limiting block presses on the right pressure block of the rocker block, so that the left side of the rocker block is raised, and the left locking tooth pushes against the transmission tooth on the inner side of the transmission cover to the left; when in the middle gear, the left and right locking teeth at both ends of the rocker block are pushed against the transmission teeth.

[0006] In a preferred embodiment of a marble structure, the front end of the functional part is provided with a marble groove, a marble spring is provided in the marble groove, and the marble is located at the top of the marble spring.

[0007] The specific structures of the left and right support springs are optimized. The movable cavity wall is provided with a left spring hole and a right spring hole. The bottom of the left support spring is located in the left spring hole, and the bottom of the right support spring is located in the right spring hole.

[0008] To prevent the locking effect of the prying block from decreasing, grooves are provided on both sides of the rotating ring at the position of the movable cavity. The grooves are used to allow the left and right locking teeth to move so that they can be engaged with the transmission teeth of the transmission cover.

[0009] To facilitate the installation of a fixed wrench head after the slot is selected, a magnetic block is provided at the bottom of the main rod.

[0010] For ease of grip, the three-pronged grip has a circular disc in the middle, with the main end and two secondary ends protruding from the disc; the three-pronged grip is made of plastic.

[0011] Furthermore, each of the two secondary ends is provided with a metal rod with a groove at the bottom.

[0012] To increase the connection strength between the main tube and the three-pronged grip, the outer side of the main tube is provided with reinforcing ribs.

[0013] To facilitate the rotation of the rotating ring, friction grooves are provided on the outer side of the ring.

[0014] The rotating ring is also marked with rotation gear indicators.

[0015] This utility model has three gears in use. The rotating ring can rotate relative to the three-pronged handle. When the left gear is selected, the right locking tooth presses against the transmission tooth on the inside of the transmission cover. Turning the main pipe clockwise will normally drive the main rod to turn clockwise. Reverse rotation will cause the right locking tooth and the transmission tooth to slip, similar to disengaging a clutch. The main pipe will not rotate with the handle. When the right gear is selected, it can be turned counterclockwise. When the rotating ring is in the middle gear, the left and right locking teeth at both ends of the rocker block extend and press against the transmission rod teeth. The entire main pipe and main rod are equivalently fixed, just like a standard three-pronged wrench.

[0016] The beneficial effects of this utility model are as follows: 1. Traditional three-pronged wrenches require constant forward and reverse rotation of the entire tool when tightening screws, resulting in large and frequent hand movements. However, the new mechanism allows for unidirectional transmission with only a small swing of the wrench during tightening; the hand can swing back and forth within a relatively small angle, greatly reducing hand fatigue and making operation easier; this increased speed significantly shortens working time. 2. The new mechanism has three positions, allowing for convenient and rapid switching of tightening direction, making it applicable to a wider range of scenarios and very convenient for operators to use and switch between tightening positions. 3. Three-pronged wrenches with three slots can typically be equipped with various types of wrench heads, such as Phillips, slotted, and Torx. Combined with the advantages of the ratchet mechanism, it can meet the tightening needs of different types of screws; users only need to change the corresponding wrench head to cope with various working scenarios, improving the tool's versatility. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one embodiment.

[0018] Figure 2 This is an exploded schematic diagram of the main end of an embodiment.

[0019] Figure 3 This is an exploded view of the main end ratchet mechanism in one embodiment.

[0020] Figure 4 This is an exploded schematic diagram of the main end ratchet mechanism in another direction of one embodiment.

[0021] Figure 5 This is a cross-sectional schematic diagram of the main end of an embodiment.

[0022] Figure 6 This is a top view schematic diagram of the main end ratchet mechanism in one embodiment.

[0023] Figure 7 This is a schematic diagram of a ratchet mechanism in the middle position.

[0024] Figure 8 This is a schematic diagram of a ratchet mechanism in the left gear position.

[0025] Figure 9 This is a schematic diagram of a ratchet mechanism in the right gear position. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] Example 1

[0028] Combined with appendix Figures 1 to 9 A ratchet three-pronged wrench includes a three-pronged handle 1, which has a main end 2 and two auxiliary ends 3. A metal main tube 4 is fixed inside the main end 2, and a central rod 5 is provided in the middle of the main tube 4. The upper end of the main tube 4 is a functional part 6. It also includes a main rod 7, the upper end of which has a groove 8, and the lower end of which has a transmission cover 9. The transmission cover 9 has a ring of transmission teeth 10 on its inner side. The transmission cover 9 is fitted onto the functional part 6, and the central rod 5 is inserted into the main rod 7. A rotating ring 11 is fitted on the functional part 6 below the transmission cover 9. The inner wall of the rotating ring 11 has three... A gear slot 12 is provided, and a ball 24 is provided at the front end of the functional part 6, which can be selectively locked in the gear slot 12 so that the rotating ring 11 has a left gear, a middle gear, and a right gear; a movable cavity 13 is also recessed on the functional part 6, and a left support spring 14 and a right support spring 15 are provided on the wall of the movable cavity 13; a rocker block 16 is movably provided in the movable cavity 13, a left pressure block 17 is provided on the left side of the rocker block 16, and a left locking tooth 18 is provided at the top of the left pressure block 17; a right pressure block 19 is provided on the right side of the rocker block 16, and a right locking tooth 20 is provided at the top of the right pressure block 19; the rocker block 16 is supported on the inside by the left support spring 14 and the right support spring 15.

[0029] Combined with appendix Figure 7 Appendix Figure 8 Appendix Figure 9The inner side of the rotating ring 11 is integrally provided with a limiting block 21. The rotation of the rotating ring 11 drives the limiting block 21 to move in the movable cavity 13. When in the left gear position, the limiting block 21 presses on the left pressing block 17 of the lifting block 16, so that the right side of the lifting block 16 is lifted up, and the right locking tooth 20 pushes against the transmission tooth 10 on the inner side of the transmission cover 9 to the right. When in the right gear position, the limiting block 21 presses on the right pressing block 19 of the lifting block 16, so that the left side of the lifting block 16 is lifted up, and the left locking tooth 18 pushes against the transmission tooth 10 on the inner side of the transmission cover 9 to the left. When in the middle gear position, the left locking tooth 18 and the right locking tooth 20 at both ends of the lifting block 16 push against the transmission tooth 10.

[0030] Combined with appendix Figure 3 In a preferred embodiment of the structure of the ball 24, the front end of the functional part 6 is provided with a ball groove 22, a ball spring 23 is provided in the ball groove 22, and the ball 24 is located on top of the ball spring 23.

[0031] Combined with appendix Figure 4 The specific structures of the left support spring 14 and the right support spring 15 are optimized. The wall of the movable cavity 13 is provided with a left spring hole 25 and a right spring hole 26. The bottom of the left support spring 14 is located in the left spring hole 25, and the bottom of the right support spring 15 is located in the right spring hole 26.

[0032] To prevent the locking effect of the prying block 16 from decreasing, the rotating ring 11 has grooves 27 on both sides of the movable cavity 13. The grooves 27 are used to make way for the left locking tooth 18 and the right locking tooth 20 so that they can be locked onto the transmission tooth 10 of the transmission cover 9.

[0033] To facilitate the installation of a fixed wrench head on the slot 8, a magnetic block 28 is provided on the main rod 7 at the bottom of the slot 8.

[0034] Combined with appendix Figure 1 For ease of gripping, the three-pronged grip 1 has a circular disc in the middle, with the main end 2 and two secondary ends 3 protruding from the disc; the three-pronged grip 1 is made of plastic.

[0035] Furthermore, each of the two secondary ends 3 is provided with a metal rod 29 with a shaped groove 8 at the bottom.

[0036] To increase the connection strength between the main tube 4 and the three-pronged grip 1, a reinforcing rib 30 is provided on the outer side of the main tube 4.

[0037] To facilitate the rotation of the rotating ring 11, a friction groove 31 is provided on the outer side of the rotating ring 11.

[0038] Combined with appendix Figure 3 The rotating ring 11 is also provided with a rotation position indicator 32.

[0039] This embodiment has three gears during use. The rotating ring 11 can rotate relative to the three-pronged handle 1. When the left gear is selected, since the right locking tooth 20 is pressed against the transmission tooth 10 on the inside of the transmission cover 9, the main pipe 4 can be rotated clockwise to drive the main rod 7 to rotate clockwise normally. If the rotation is reversed, the right locking tooth 20 and the transmission tooth 10 will have a slipping effect, similar to disengaging a clutch, and the main pipe 4 will not rotate with the handle. When the right gear is selected, the opposite is true, and it can be turned counterclockwise. When the rotating ring 11 is in the middle gear, since the left locking tooth 18 and the right locking tooth 20 at both ends of the rocker arm 16 extend and press against the transmission rod teeth, the entire main pipe 4 and the main rod 7 are equivalently fixed, just like a standard three-pronged wrench.

[0040] The beneficial effects of this embodiment are as follows: 1. Traditional three-pronged wrenches require constant forward and reverse rotation of the entire tool when tightening screws, resulting in large and frequent hand movements. However, with the new mechanism, only a small swing of the wrench is needed during tightening to achieve unidirectional transmission; the hand can swing back and forth within a relatively small angle, greatly reducing hand fatigue and making operation easier; this increased speed significantly shortens working time. 2. The new mechanism has three positions, allowing for convenient and rapid switching of tightening direction, making it applicable to a wider range of scenarios and very convenient for operators to use and switch between tightening positions. 3. Three-pronged wrenches with three slots can typically be equipped with various types of wrench heads, such as Phillips, slotted, and Torx. Combined with the advantages of the ratchet mechanism, it can meet the tightening needs of different types of screws; users only need to change the corresponding wrench head to cope with various working scenarios, improving the tool's versatility.

Claims

1. A ratchet three-pronged wrench, comprising a three-pronged handle, the three-pronged handle having a main end and two auxiliary ends, characterized in that: The main end is fitted with a metal main tube, with a central rod in the middle and a functional part at the upper end. It also includes a main rod with a groove at its upper end and a transmission cover at its lower end. The transmission cover has a ring of transmission teeth on its inner side. The transmission cover fits onto the functional part, and the central rod is inserted into the main rod. A rotating ring is fitted onto the functional part below the transmission cover. The inner wall of the rotating ring has three gear slots. A ball at the front end of the functional part can be selectively engaged in one of the gear slots, giving the rotating ring a left, middle, and right gear position. The functional part also has a recessed movable cavity with a left and right support spring on its wall. The movable part is equipped with a rocker arm. A left pressure block is located on the left side of the rocker arm, with a left locking tooth at its top. A right pressure block is located on the right side of the rocker arm, with a right locking tooth at its top. The rocker arm is supported by a left and a right support spring. A limiting block is integrally formed on the inner side of the rotating ring. The rotation of the rotating ring causes the limiting block to move within the movable cavity. In the left gear position, the limiting block presses against the left pressure block of the rocker arm, causing the right side of the rocker arm to lift up, and the right locking tooth pushes against the transmission teeth on the inner side of the transmission cover. In the right gear position, the limiting block presses against the right pressure block of the rocker arm, causing the left side of the rocker arm to lift up, and the left locking tooth pushes against the transmission teeth on the inner side of the transmission cover. In the middle gear position, the left and right locking teeth at both ends of the rocker arm push against the transmission teeth.

2. The ratchet three-pronged wrench according to claim 1, characterized in that: The front end of the functional unit is provided with a ball groove, and a ball spring is provided in the ball groove, with the ball located at the top of the ball spring.

3. The ratchet three-pronged wrench according to claim 1, characterized in that: The movable cavity wall is provided with a left spring hole and a right spring hole. The bottom of the left support spring is located in the left spring hole, and the bottom of the right support spring is located in the right spring hole.

4. The ratchet three-pronged wrench according to claim 1, characterized in that: The rotating ring has grooves on both sides of the movable cavity.

5. The ratchet three-pronged wrench according to claim 1, characterized in that: The main rod is equipped with a magnetic block at the bottom of the duct slot.

6. The ratchet three-pronged wrench according to claim 1, characterized in that: The three-pronged grip has a circular disc in the middle, with the main end and two secondary ends protruding from the disc; the three-pronged grip is made of plastic.

7. The ratchet three-pronged wrench according to claim 1, characterized in that: Both secondary ends are equipped with metal rods with shaped grooves at the bottom.

8. The ratchet three-pronged wrench according to claim 1, characterized in that: The outer side of the main tube is provided with reinforcing ribs.

9. The ratchet three-pronged wrench according to claim 1, characterized in that: The outer side of the spiral ring is provided with friction grooves.

10. The ratchet three-pronged wrench according to claim 1, characterized in that: The rotating ring is also marked with rotation gear indicators.

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