CN108789255B

CN108789255B - Ratchet accelerating device for hand tool

Info

Publication number: CN108789255B
Application number: CN201811052702.9A
Authority: CN
Inventors: 王伯勇
Original assignee: Shaoxing Huanzhou Tools Co ltd
Current assignee: Shaoxing Huanzhou Tools Co ltd
Priority date: 2018-09-10
Filing date: 2018-09-10
Publication date: 2023-11-07
Anticipated expiration: 2038-09-10
Also published as: CN108789255A

Abstract

The invention discloses a ratchet accelerating device of a hand tool, which comprises a gear long rod, a clamp spring, a gear inner rod, a ratchet sleeve, a switch button, a spring I, a gear fixing upper cover, a positioning rod, a speed changing gear, a gear fixing lower seat, a speed changing positioner, a positioning adjusting switch, steel balls, a ratchet fluted disc, an adjusting ring, a steel ball II, a spring II, a ratchet tail seat, a spring III, a ratchet cross arm and a clamp spring II.

Description

Ratchet accelerating device for hand tool

Technical Field

The invention relates to the technical field of hand tools, in particular to a ratchet accelerating device of a hand tool.

Background

The conventional hand tool for screwing the screw is usually driven at an angle of 1:1, when the screw is screwed, the hand tool rotates for one circle, the screw also synchronously rotates for one circle, the screw axially displaces for one pitch according to the pitch of the screw, and in practical application, the following conditions often occur: for example, in a household electrical appliance switch, a fixed switch cover plate needs to be screwed into a screw hole of a switch frame fixed in a wall by two long screws, and the embedded installation depth dimension of the switch frame is generally estimated by gross estimation, most of the embedded installation depth dimension is not strictly determined according to the actual switch model and the fixed screw length, meanwhile, in order to achieve wide installation adaptability, the fixed screws are basically long screws, when the switch plate is installed, a long time is required to be taken for screwing the long screws into place to fix the switch cover plate in place after the switch frame is installed, when a conventional hand tool is used for screwing the screws, the hand tool is rotated once, the screws are axially moved into or out of corresponding dimensions according to the lead dimension of the threads, if the length of the screws is 50mm, the threads lead is 1mm, 50 turns are required, and the like, so that the similar hand tool structure and mode greatly influence the installation efficiency and the consumed time.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a ratchet accelerating device of a hand tool, which comprises a gear long rod, a clamp spring, a gear inner rod, a ratchet sleeve, a switch button, a spring I, a gear fixing upper cover, a positioning rod, a speed changing gear, a gear fixing lower seat, a speed changing positioner, a positioning adjusting switch, steel balls, a ratchet fluted disc, an adjusting ring, a steel ball II, a spring II, a ratchet tail seat, a spring III, a ratchet cross arm and a clamp spring II.

In order to achieve the aim, the invention provides a ratchet accelerating device of a hand tool, which comprises a gear long rod, a clamp spring, a gear inner rod, a ratchet sleeve, a switch button, a spring I, a gear fixing upper cover, a positioning rod, a speed changing gear, a gear fixing lower seat, a speed changing positioner, a positioning adjusting switch, steel balls, a ratchet fluted disc, an adjusting ring, a steel ball II, a spring II, a ratchet tail seat, a spring III, a ratchet cross arm and a clamp spring II, wherein the gear long rod is arranged in a small hole of a cap-shaped ratchet sleeve to be connected, the clamp spring is arranged in a clamp spring groove of the gear long rod, the outer tooth of the inner head part of the gear inner rod arranged in a large hole of the ratchet sleeve is meshed with the inner tooth of the gear long rod, a plurality of springs I are uniformly arranged at the front end of the gear fixing upper cover to be arranged in the large hole of the ratchet sleeve, the three speed changing gears are respectively connected with the positioning rod in the holes, one end of the positioning rod is connected with the gear fixing upper cover, the other end of the positioning rod is connected with a gear fixed lower seat, a component which is sleeved and installed by a variable speed positioner and the gear fixed lower seat 1 is installed in a ratchet sleeve, a plurality of inclined notches are uniformly distributed on the left end face of the variable speed positioner, which is uniformly distributed on the left end face of a ratchet tooth I, a positioning adjusting switch is connected with the gear fixed lower seat and then installed in the ratchet sleeve, a plurality of triangular jacking blocks are uniformly distributed on the right end face of the positioning adjusting switch, a toggle groove is arranged at the edge of one triangular jacking block, after the switch button is installed in a square hole of the ratchet sleeve, a fluctuation block of the switch button is embedded in the toggle groove of the positioning adjusting switch, a plurality of steel balls are uniformly distributed on the back face of the positioning adjusting switch, the ratchet fluted disc is installed on the back face of the positioning adjusting switch, the outer teeth are meshed with the variable speed gear, the steel balls are embedded in the ratchet teeth, an adjusting ring is connected with the ratchet fluted disc in a sleeved mode, and after the ratchet tailstock is installed in an inner hole of the adjusting ring, the second clamping spring is arranged in a second clamping spring groove of the gear inner rod to axially fix the parts.

The ratchet tail seat is further provided with a third spring in two parallel holes at the upper end of the step of the adjusting ring, the third spring is provided with a ratchet cross arm to cover the third spring, a second spring is arranged in a hole at the lower end of the step of the adjusting ring, the top of the second spring is provided with a second steel ball, and the integrally assembled ratchet tail seat is arranged in the hole of the adjusting ring.

The beneficial effects of the invention are as follows: the ratchet accelerating device can amplify the rotation speed according to the gear multiplying power of the speed change gear and the gear inner rod, and greatly improves the use efficiency.

Drawings

FIG. 1 is a schematic illustration of the present invention;

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

FIG. 3 is a schematic illustration of the ratio gear of FIG. 1;

fig. 4 is a schematic view of the ratchet sleeve of fig. 1.

In the figure: the gear long rod 1, the clamp spring 2, the gear inner rod 3, the external teeth 301, the clamp spring groove two 302, the ratchet wheel sleeve 4, the switch button 5, the spring one 6, the gear fixing upper cover 7, the positioning rod 8, the speed change gear 9, the gear fixing lower seat 10, the speed change positioner 11, the inclined notch 1101, the ratchet wheel tooth one 1102, the positioning adjusting switch 12, the triangular jacking block 1201, the toggle groove 1202, the steel ball 13, the ratchet tooth disc 14, the external teeth 1401, the ratchet wheel tooth 1402, the adjusting ring 15, the steel ball two 16, the spring two 17, the ratchet wheel tailstock 18, the spring three 19, the ratchet wheel cross arm 20 and the clamp spring two 21.

Detailed Description

As shown in fig. 1 to 4: the technical proposal of the invention is further specifically described, the ratchet accelerating device of the hand tool comprises a gear long rod 1, a clamp spring 2, a gear inner rod 3, a ratchet sleeve 4, a switch button 5, a first spring 6, a gear fixing upper cover 7, a positioning rod 8, a speed changing gear 9, a gear fixing lower seat 10, a speed changing positioner 11, a positioning adjusting switch 12, a steel ball 13, a ratchet fluted disc 14, an adjusting ring 15, a second steel ball 16, a second spring 17, a ratchet tail seat 18, a third spring 19, a ratchet cross arm 20 and a clamp spring 21, wherein the gear long rod 1 is arranged in a small hole of a cap-shaped ratchet sleeve 4 to be connected, the clamp spring 2 is arranged in a clamp spring groove of the gear long rod 1, the outer tooth 301 of the inner head part of the large hole of the gear inner rod 3 is arranged in the ratchet sleeve 4 to be meshed with the inner tooth of the gear long rod 1, the front end of the gear fixing upper cover 7 is uniformly provided with a plurality of springs 6 to be arranged in the large hole of the ratchet sleeve 4, the inside clearance error is eliminated, the inside of the hole of the three variable gears 9 is respectively connected with a positioning rod 8, one end of the positioning rod 8 is connected with a gear fixing upper cover 7, the other end of the positioning rod 8 is connected with a gear fixing lower seat 10, the three variable gears 9 are duplex gears comprising large-diameter gears and small-diameter gears, the large-diameter gears of the three variable gears 9 are meshed with external teeth 301, the triangle meshing mode forms a stable gear transmission structure and a gear transmission relation, the assembly formed by sleeving the variable speed positioner 11 and the gear fixing lower seat 10 is arranged in a ratchet sleeve 4, the left end face of the variable speed positioner 11 with ratchet teeth 1102 is uniformly distributed with a plurality of oblique notches 1101, a positioning regulating switch 12 is arranged in the ratchet sleeve 4 after being connected with the gear fixing lower seat 10, the right end face of the positioning regulating switch 12 is uniformly distributed with a plurality of triangular jacking blocks 1201, the position of one of the edges of the triangular jacking blocks 1201 is provided with a poking groove 1202, after the switch button 5 is arranged in a square hole of the ratchet sleeve 4, a fluctuation block of the switch button 5 is embedded in a stirring groove 1202 of the positioning adjusting switch 12, a plurality of steel balls 13 are uniformly distributed on the back surface of the positioning adjusting switch 12, the ratchet fluted disc 14 is arranged on the back surface of the positioning adjusting switch 12, an external tooth 1401 of the ratchet fluted disc 14 is meshed with a small-diameter gear of the speed change gear 9 to form a primary gear transmission structure, the steel balls 13 are embedded in the ratchet teeth 1402, the adjusting ring 15 and the ratchet fluted disc 14 are connected in a sleeved mode to form a whole capable of synchronously rotating, after the ratchet tailstock 18 is arranged in an inner hole of the adjusting ring 15, a snap spring II 21 is arranged in a snap spring groove II 302 of the gear inner rod 3 to axially fix the components, and the ratchet accelerating device can amplify the rotation speed according to the gear multiplying power of the speed change gear and the gear inner rod, and the service efficiency is greatly improved.

The ratchet wheel tail seat 18 is arranged in two parallel holes at the upper end of the step of the adjusting ring 15, the three holes are respectively provided with a third spring 19, the upper end of the third spring 19 is provided with a ratchet wheel cross arm 20 for covering, after the ratchet wheel tail seat 18 is connected with the adjusting ring 15, a second spring 17 is arranged in the hole at the lower end of the step of the adjusting ring 15, the top of the second spring 17 is provided with a second steel ball 16, the integrally assembled ratchet wheel tail seat 18 is arranged in the hole of the adjusting ring 15, and the ratchet wheel cross arm 20 locks the inner circumference of the adjusting ring 15 to enable the ratchet wheel tail seat 18 and the adjusting ring 15 to form an integral assembly capable of synchronously rotating.

The external teeth 1401 have the same modulus as the small diameter gear of the speed change gear 9, the external teeth 301 have the same modulus as the large diameter gear of the speed change gear 9, so that the transmission is facilitated, the number of teeth of the large diameter gear of the speed change gear 9 is a multiple of the number of teeth of the external teeth 301, and the acceleration rotation of the gear inner rod 3 is facilitated.

Description of the preferred embodiments

When the ratchet accelerating device is applied, a rotating handle which is favorable for holding by hand is connected, the rotating handle is installed and connected with a ratchet tail seat 18, a manual adjusting switch button 5 drives a triangular jack 1201 of a positioning adjusting switch 12 to be embedded into an inclined notch 1101, so that ratchet teeth 1402 of a ratchet fluted disc 14 are meshed with ratchet teeth 1102 of a speed changing positioner 11, the ratchet tail seat 18, the ratchet fluted disc 14, the speed changing positioner 11, a speed changing gear 9, a gear fixing lower seat 10 and a ratchet sleeve 4 are in a locking state to form a synchronous rotating whole, when the handle rotates and applies force, the handle drives the ratchet tail seat 18 to synchronously rotate at the same speed ratio, the whole also synchronously rotates at the same speed ratio, a speed changing gear 9 simultaneously locks a gear inner rod 3 to drive a gear long rod 1 to rotate, and a screw head of the gear long rod 1 is installed on the head of the screw head and the handle to rotationally apply force to rotate at the speed ratio; when the gear long rod 1 is required to rotate in an accelerating way, the switch button 5 is manually moved to drive the positioning adjusting switch 12 to rotate, so that the triangular ejector block 1201 is separated from the inclined notch 1101, the ratchet tooth disc 14, the adjusting ring 15 and the ratchet tail seat 18 are synchronously ejected to the left end in the handle mounting direction during separation, at this time, the ratchet teeth 1402 of the ratchet tooth disc 14 are separated from the first ratchet teeth 1102 of the gear positioner 11 and are in a non-meshed state, the ratchet sleeve 4 is in an independent rotating state, the outer circumference of the ratchet sleeve 4 is held by a left hand, the handle is rotated by a right hand, the handle drives the ratchet tail seat 18 to rotate, the ratchet tail seat 18 drives the adjusting ring 15 and the ratchet tooth disc 14 to rotate, the outer teeth 1401 of the meshed gear 9 are driven to rotate by the outer teeth of the ratchet tail seat 18, the gear 9 is a duplex gear, the outer teeth 301 simultaneously drives the inner gear 3 of the gear, the outer teeth 301 of the inner gear 9 is simultaneously rotated by the outer teeth 301 of the duplex gear, the inner gear 3 is rotated by the outer teeth of the inner gear 9, the gear 1 is rotated by the outer teeth of the outer gear 1, the gear 1 is rotated by the outer gear 1, and the gear 1 is rotated by the outer gear 1.

When accelerating rotation, the rotation moment is correspondingly reduced, and when the screw is about to be screwed in place for fastening, the switch button 5 is pulled to cancel the acceleration function, and the rotation moment is immediately increased to screw the screw.

The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.

Claims

1. The ratchet accelerating device of the hand tool is characterized in that: comprises a gear long rod (1), a clamp spring (2), a gear inner rod (3), a ratchet sleeve (4), a switch button (5), a first spring (6), a gear fixing upper cover (7), a positioning rod (8), a speed change gear (9), a gear fixing lower seat (10), a speed change positioner (11), a positioning adjusting switch (12), a steel ball (13), a ratchet fluted disc (14), an adjusting ring (15), a second steel ball (16), a second spring (17), a ratchet tail seat (18), a third spring (19), a ratchet cross arm (20) and a second clamp spring (21), wherein the gear long rod (1) is arranged in a clamp spring groove of the gear long rod (1) after being connected in a small hole of the cap-shaped ratchet sleeve (4), the gear inner rod (3) is arranged in an external tooth (301) at the inner head part of the large hole of the ratchet sleeve (4) and is connected with internal teeth of the gear long rod (1), the front end of the gear fixing upper cover (7) is provided with a plurality of first springs (6) and then arranged in the hole of the ratchet sleeve (4), the positioning rods (8) are respectively connected with the large holes of the three speed change gears (9) and the positioning rod (8) and one end of the positioning rod (7) is connected with one end of the lower fixing rod (7), the three speed change gears (9) are duplex gears comprising large diameter gears and small diameter gears, the large diameter gears of the three speed change gears (9) are meshed with external teeth (301), a component formed by sleeving and installing a speed change positioner (11) and a gear fixed lower seat (10) is arranged in a ratchet sleeve (4), a plurality of inclined notches (1101) are uniformly distributed on the left end surface of the speed change positioner (11) with ratchet teeth one (1102) uniformly distributed on the left end surface, the positioning adjusting switch (12) is connected with the gear fixed lower seat (10) and then is arranged in the ratchet sleeve (4), a plurality of triangular jacking blocks (1201) are uniformly distributed on the right end surface of the positioning adjusting switch (12), a toggle groove (1202) is formed in the position of one triangular jacking block (1201), after the switch button (5) is arranged in a square hole of the ratchet sleeve (4), the wave block of the switch button (5) is embedded in the toggle groove (1202) of the positioning adjusting switch (12), a plurality of steel balls (13) are uniformly distributed on the back surface of the positioning adjusting switch (12), the ratchet wheel (14) is arranged on the back surface of the positioning adjusting switch (12), the external teeth (12) are uniformly distributed on the back surface of the gear (9) and meshed with the ratchet ring (14) and then meshed with the inner hole (15) of the ratchet ring (15), the second snap spring (21) is arranged in a second snap spring groove (302) of the gear inner rod (3) to axially fix all parts, a third spring (19) is respectively arranged in two parallel holes at the upper end of a step of the adjusting ring (15), a third ratchet cross arm (20) is arranged at the upper end of the third spring (19) to cover the third spring, a second spring (17) is arranged in a hole at the lower end of the step of the adjusting ring (15), a second steel ball (16) is arranged at the top of the second spring (17), the integrally assembled ratchet tail seat (18) is arranged in a hole of the adjusting ring (15), the outer teeth (1401) are identical to the small-diameter gear of the speed change gear (9), the outer teeth (301) are identical to the large-diameter gear of the speed change gear (9), and the number of teeth of the large-diameter gear of the speed change gear (9) is a multiple of the number of teeth of the outer teeth (301).