CN203245777U

CN203245777U - Wrench

Info

Publication number: CN203245777U
Application number: CN 201320165655
Authority: CN
Inventors: 王暋
Original assignee: Hangzhou Great Star Industrial Co Ltd
Current assignee: Hangzhou Great Star Industrial Co Ltd
Priority date: 2013-04-03
Filing date: 2013-04-03
Publication date: 2013-10-23
Anticipated expiration: 2023-04-03

Abstract

The utility model provides a wrench which comprises a working portion and a handle. The working portion comprises a main shaft perpendicular to the handle, a bi-directional pawl and a ratchet wheel, wherein the bi-directional pawl and the ratchet wheel are matched with each other, the ratchet wheel is arranged to be driven through the handle, the bi-directional pawl is arranged to be capable of driving the main shaft to rotate, the bi-directional pawl comprises a first pawl and a second pawl, and the first pawl and the second pawl are opposite to the clutch direction of the ratchet wheel. The working portion further comprises a reversing device used for setting the clutch direction of the bi-directional pawl and the ratchet wheel, the reversing device is arranged to enable the first pawl and the second pawl to be joined with the ratchet wheel in a selective mode, and the ratchet wheel and the bi-directional pawl are made to be joined with each other to drive the main shaft to rotate when the handle rotates in the direction set by the reversing device. The ratchet wheel and the bi-directional pawl are made to be slipped with each other and the main shaft remains still when the handle rotates in the direction opposite to the direction set by the reversing device. The working portion further comprises a planetary gear speed up mechanism acting on the main shaft, the planetary gear speed up mechanism comprises a sun gear, planet gears and a gear ring, the sun gear is arranged to be capable of driving the main shaft to rotate together, a rotating ring is arranged to be capable of driving the planet gears to rotate, and the gear ring is fixedly connected with the handle. When the handle is held and the rotating ring is rotated, the planetary gear speed up mechanism speeds up the rotation input by the rotating ring and outputs the rotation through the main shaft.

Description

Spanner

Technical field

The utility model relates to a kind of spanner, belongs to the hand-operated tools field.

Background technology

When common spanner uses, because the hand of gripping handle is merely able to rotate a less angle, therefore when needs during to a part continuous several times turn, needing therebetween is deadlocked allows hand turn round an angle in the other direction, sometimes be that spanner is temporarily withdrawn realization revolution in the other direction from part, this mode needs again with the spanner alignment element, sometimes is to realize revolution in the other direction with the auxiliary hand release handle of gripping handle that allows of another hand, and this operation is very inconvenient.

Under the output condition of this external low moment of torsion, if turn part as soon as possible will improve the operating efficiency of spanner greatly.

Therefore, those skilled in the art be devoted to develop a kind of can be under low moment of torsion output condition turn part as soon as possible, can grip continuous the rotating back and forth of handle with hand in addition, need not pause therebetween, thereby screw fast or unscrew the spanner of part.

The utility model content

For achieving the above object, the utility model provides a kind of spanner, comprise operate portions and handle, operate portions comprises the main shaft vertical with handle and the two-way pawl-and-gearing that cooperatively interacts, wherein ratchet is set to be driven by handle, two-way ratchet is set to drive main shaft rotation, and have and ratchet between the first ratchet and second ratchet of clutch opposite direction, operate portions also comprises the reversing arrangement be used to the clutch direction that two-way ratchet and ratchet are set; Reversing arrangement is set to make the first ratchet and the second ratchet optionally to engage with ratchet, so that the direction that sets at reversing arrangement when handle is when rotating, and ratchet and two-way engaged pawl, and then drive main shaft and rotate; When handle when the direction of the opposite direction that sets with reversing arrangement is rotated, skid between ratchet and the two-way ratchet, main shaft is motionless; Operate portions also comprises the planetary gear speed increasing mechanism that acts on main shaft, the planetary gear speed increasing mechanism comprises central gear, planetary gear and gear ring, wherein central gear is set to drive main shaft and rotates together, swivel becket is set to drive planetary gear rotation, gear ring and handle fixedly link, so that when handle is held, during the rotation swivel becket, the planetary gear speed increasing mechanism with the rotation speedup of swivel becket input by being exported by main shaft.

In preferred embodiments of the present utility model, described ratchet is arranged on the inner peripheral surface of toroidal head portion of described handle.

In another preferred embodiments of the present utility model, described two-way ratchet is installed on the described main shaft by bearing pin.

In another preferred embodiments of the present utility model, described reversing arrangement is the reversing bar that is located among the described main shaft, described reversing bar is provided with the expansion link with described two-way click-fit, be provided with spring in the described expansion link, so that described expansion link can be at described reversing bar flexible in the radial direction, when described reversing bar rotates, described expansion link is along with rotation, its head under the bias of spring be arranged on described two-way ratchet on cambered surface cooperate, described the first ratchet or described second ratchet of described two-way ratchet are cooperated with described ratchet, thereby set the clutch direction between described two-way ratchet and the described ratchet.

In another preferred embodiments of the present utility model, the head of described expansion link is hemispherical.

In another preferred embodiments of the present utility model, described central gear is fixedly linked by screw and described main shaft.

In another preferred embodiments of the present utility model, described gear ring cooperates with blind hole by boss with handle and links to each other.

In another preferred embodiments of the present utility model, described planetary gear speed increasing mechanism makes 4 times of rotation speedups by the input of described gear ring afterwards by described main shaft output.

According to spanner of the present utility model in use, under the condition of low moment of torsion output, such as the starting stage of bolting on, the moment of torsion of the required output of spanner is less, and the user need not turning handle at this moment, and only need hold handle, rotate simultaneously swivel becket by hand, main shaft will rotate with the speed higher than the rotation of swivel becket, and its rotation direction is identical with the rotation direction of swivel becket, can bolt on quickly like this; Under the condition of high moment of torsion output, as in the final stage of bolting on, the moment of torsion of the required output of spanner this moment is larger, and the user can preset by turning knob the outbound course of the main shaft of spanner, as clockwise or counterclockwise.This moment, then main shaft upwards rotated the party with same speed such as user's turning handle on the outbound course of setting; Such as user's turning handle on the direction opposite with the outbound course of setting, this moment, main shaft kept motionless.

Be described further below with reference to the technique effect of accompanying drawing to design of the present utility model, concrete structure and generation, to understand fully the purpose of this utility model, feature and effect.

Description of drawings

Fig. 1 is the front view of the spanner of a preferred embodiment of the present utility model.

Fig. 2 is the top view of the spanner of a preferred embodiment of the present utility model.

Fig. 3 is the operate portions of the spanner among Fig. 1,2.

Fig. 4 is the exploded view of operate portions among Fig. 4.

Fig. 5 is the part assembly drawing of operate portions among Fig. 4.

Fig. 6 is the part assembly drawing of operate portions among Fig. 4.

Fig. 7 is the part assembly drawing of operate portions among Fig. 4.

Fig. 8 is the part assembly drawing of operate portions among Fig. 4.

Fig. 9 is the part assembly drawing of operate portions among Fig. 4.

Figure 10 is the part assembly drawing of operate portions among Fig. 4.

Figure 11 is the top view of speedup planetary mechanism among Fig. 4.

Figure 12 is the part assembly drawing of operate portions among Fig. 4.

The specific embodiment

Fig. 1,2 shows according to the front view of the spanner of a preferred embodiment of the present utility model and top view, and as seen this spanner includes operate portions 1 and handle 2, and wherein the axis of operate portions 1 is vertical with handle 2.As can be seen from Fig. 3, in the present embodiment, have knob 3, swivel becket 4 on the operate portions 1, be set in that head is the handle 2 of ring-type outside the operate portions 1, and in operate portions 1, extend main shaft 5 along the axis direction of operate portions 1.During use, under the condition of low moment of torsion output, such as the starting stage of bolting on, the moment of torsion of the required output of spanner is less, and the user need not turning handle at this moment, and only need hold handle 2, rotate simultaneously swivel becket 4 by hand, main shaft 5 will rotate with the speed higher than the rotation of swivel becket 4, and its rotation direction is identical with the rotation direction of swivel becket 4, can bolt on quickly like this; Under the condition of high moment of torsion output, as in the final stage of bolting on, the moment of torsion of the required output of spanner this moment is larger, and the user can preset by turning knob the outbound course of the main shaft 5 of spanner, as clockwise or counterclockwise.This moment, then main shaft 5 upwards rotated the party with same speed such as user's turning handle 2 on the outbound course of setting; Such as user's turning handle 2 on the direction opposite with the outbound course of setting, this moment, main shaft 5 maintenances were motionless.Below will the concrete structure of this embodiment be elaborated.

Operate portions 1 comprises can cooperate with ratchet 10 two-way ratchet 7, and ratchet 10 is set to rotate with handle 2, and two-way ratchet 7 is set to drive main shaft 5 and rotates.Referring to the exploded view of the operate portions 1 among the Fig. 3 shown in Fig. 4, in addition please be simultaneously referring to Fig. 5, Fig. 6.In the present embodiment, ratchet 10 is set directly on the inner peripheral surface of toroidal head portion of handle 2.Two-way ratchet 7 is installed on the main shaft 5 by bearing pin 8.Also comprise in the operate portions 1 be used to the reversing arrangement of two-way ratchet 7 with the clutch direction of ratchet 10 is set.In the present embodiment, have on the two-way ratchet 7 respectively and can cooperate with ratchet 10, and the first ratchet 12 of clutch opposite direction and the second ratchet 13.Reversing arrangement is the reversing bar 6 that is located among the main shaft 1.Reversing bar 6 links to each other with knob 3, which is provided with the expansion link 9 that cooperates with described two-way ratchet 7.The head of expansion link 9 is hemispherical, is provided with spring in it, so that expansion link 9 can stretching at reversing bar 6 in the radial direction.When rotating reversing bar 6 by knob 5, expansion link 9 rotates thereupon, its head under the bias of spring be arranged on two-way ratchet 7 on cambered surface 11 cooperate, the first ratchet 12 or second ratchet 13 of two-way ratchet 7 are cooperated with ratchet 10, thereby set the clutch direction between two-way ratchet 7 and the ratchet 10.When handle 2 when direction initialization rotates, ratchet 10 engages with two-way ratchet 7 on the direction that reversing bar 6 is set, and drives main shaft 5 and rotates also output torques; And in the opposite direction and skid between the two-way ratchet 7, this moment, main shaft 5 was motionless.

Shown in Fig. 7-11, operate portions 1 also comprises the planetary gear speed increasing mechanism that acts on main shaft 5, this planetary gear speed increasing mechanism comprises central gear 14, planetary gear 15 and gear ring 16, wherein central gear 14 is set to drive main shaft 5 and rotates together, and gear ring 16 fixedly links with handle 2.Swivel becket 4 is set to drive described planetary gear 15 and rotates.When grasping handle 2, during rotation swivel becket 4, gear ring 16 keeps motionless, and planetary gear 15 is inputted and rotated, and drives central gear 14 speedups and rotates, and then drive the rotation of main shaft 5 speedups.The rotating speed of main shaft 5 outputs this moment with the ratio of the rotating speed of swivel becket 4 inputs is:

R=1+（N2/N1）

Wherein N2 is the number of teeth of gear ring, and N1 is the planetary number of teeth.

Therefore in the present embodiment, the number of teeth of gear ring 16 is 36, and the gear of planetary gear 15 is 12, and the planetary gear speed increasing mechanism makes 4 times of rotation speedups by gear ring 16 inputs afterwards by main shaft 5 outputs.

In the present embodiment, central gear 14 is fixedly linked by screw and main shaft 5.Shown in Fig. 6,12, gear ring 16 cooperates with blind hole 18 by boss 18 with handle 2 and links to each other.

More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can make many modifications and variations according to design of the present utility model.Therefore, all in the art technical staff comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in the determined protection domain by claims.

Claims

1. a spanner comprises operate portions and handle, it is characterized in that,

Described operate portions comprises the main shaft vertical with described handle and the two-way pawl-and-gearing that cooperatively interacts, wherein said ratchet is set to be driven by described handle, described two-way ratchet is set to drive described main shaft rotation, and have and described ratchet between the first ratchet and second ratchet of clutch opposite direction, described operate portions also comprises the reversing arrangement be used to the clutch direction that described two-way ratchet and described ratchet are set; Described reversing arrangement is set to make described the first ratchet and the second ratchet optionally to engage with described ratchet, so that the direction that sets at described reversing arrangement when described handle is when rotating, described ratchet and described two-way engaged pawl, and then drive described main shaft rotation; When described handle when the direction of the opposite direction that sets with described reversing arrangement is rotated, skid between described ratchet and the described two-way ratchet, described main shaft is motionless;

Described operate portions also comprises the planetary gear speed increasing mechanism that acts on described main shaft, described planetary gear speed increasing mechanism comprises central gear, planetary gear and gear ring, wherein said central gear is set to drive described main shaft and rotates together, described swivel becket is set to drive described planetary gear rotation, described gear ring and described handle fixedly link, so that when described handle is held, when rotating described swivel becket, described planetary gear speed increasing mechanism with the rotation speedup of described swivel becket input by by described main shaft output.

2. spanner as claimed in claim 1, wherein, described ratchet is arranged on the inner peripheral surface of toroidal head portion of described handle.

3. spanner as claimed in claim 1, wherein, described two-way ratchet is installed on the described main shaft by bearing pin.

4. spanner as claimed in claim 1, wherein, described reversing arrangement is the reversing bar that is located among the described main shaft, described reversing bar is provided with the expansion link with described two-way click-fit, be provided with spring in the described expansion link, so that described expansion link can be at described reversing bar flexible in the radial direction, when described reversing bar rotates, described expansion link is along with rotation, its head under the bias of spring be arranged on described two-way ratchet on cambered surface cooperate, described the first ratchet or described second ratchet of described two-way ratchet are cooperated with described ratchet, thereby set the clutch direction between described two-way ratchet and the described ratchet.

5. spanner as claimed in claim 4, wherein, the head of described expansion link is hemispherical.

6. spanner as claimed in claim 1, wherein, described central gear is fixedly linked by screw and described main shaft.

7. spanner as claimed in claim 1, wherein, described gear ring cooperates with blind hole by boss with handle and links to each other.

8. spanner as claimed in claim 1, wherein, described planetary gear speed increasing mechanism makes 4 times of rotation speedups by described gear ring input afterwards by described main shaft output.