CN209125748U

CN209125748U - Hammer tool

Info

Publication number: CN209125748U
Application number: CN201821832083.0U
Authority: CN
Inventors: 赵启斌
Original assignee: ZHEJIANG CROWN ELECTRIC TOOLS MANUFACTURE CO Ltd
Current assignee: ZHEJIANG CROWN ELECTRIC TOOLS MANUFACTURE CO Ltd
Priority date: 2018-11-08
Filing date: 2018-11-08
Publication date: 2019-07-19
Anticipated expiration: 2028-11-08

Abstract

The utility model provides a kind of hammer tool, including motor, main shaft and striking mechanism, and wherein striking mechanism includes hammer and anvil block, for the rotary force of the main shaft to be converted to the rotary force and hitting power of tool heads；It is circumferentially on the end face of hammer with a plurality of first pawls, anvil block circumferential direction, which is equipped with, has a plurality of second pawls, and the quantity of the first pawl is different from the quantity of the second pawl.A kind of hammer tool provided by the utility model can accelerate the speed of operation, improve operating efficiency, and structure is simple, easy to process, not increase processing cost and difficulty.

Description

Hammer tool

Technical field

The utility model belongs to field of power tools, in particular to a kind of hammer tool.

Background technique

In the prior art, as in a kind of entitled patent document of impact wrench of Chinese invention patent ZL201210537045.3 Described the same, the technology of percussion tool is also more and more mature.

The impact wrench recorded in the patent includes shell, drive motor, gear reduction and percussion mechanism.Wherein, Percussion mechanism further comprises engaging by the active impact block of the output shaft driving rotation of gear reduction, with active impact block Passive impact block, and be connected to passive impact block and by passive impact block drive rotation working shaft, in gear reduction unit The resetting apparatus of active impact block is provided between the output shaft and active impact block of structure, which includes pressure spring and pressure spring Support, be selectively disengaged from passive impact block when load of the active impact block suffered by working shaft increases to required value and It disengages, to impose intermittent impact to working shaft in a rotational direction.

But there are many percussion mechanisms that will hammer pawl and anvil block into shape in the prior art and be respectively set to two, therefore in hammer and anvil When each relative rotation 180 degree, hammer pawl is mutually collided with anvil block pawl.It is difficult to realize effectively hit operation.

Summary of the invention

For the above-mentioned problems in the prior art, the utility model provides a kind of hammer tool, can shorten strike Interval, improves operating efficiency, and structure is simple, does not increase manufacturing cost.

In order to reach the goals above, according to the one aspect of the utility model, a kind of hammer tool, including motor are provided, For driving the hammer tool；Main shaft is rotated by the motor driven；Tool heads are mounted on the hammer tool, are used for It carries out；Striking mechanism, including hammer and anvil block, wherein tool heads are mounted on the output end of the anvil block, and the striking mechanism is used for The rotary force of the main shaft is converted to the rotary force and hitting power of tool heads；Being circumferentially on the end face of the hammer has plural number A first pawl, the anvil block circumferential direction, which is equipped with, has a plurality of second pawls, wherein the quantity of first pawl and second pawl Quantity it is different.

One aspect according to the present utility model, tool is there are two the first pawl on the hammer, and there are three for tool on the anvil block Two pawls.

One aspect according to the present utility model, tool is there are three the first pawl on the hammer, and there are two for tool on the anvil block Two pawls.

One aspect according to the present utility model, first pawl and the second pawl are assembled together apart from one another by ground.

One aspect according to the present utility model is equipped with retarder, the retarder between the motor and the main shaft For planetary gear mechanism, for transmitting power by the rotary force high torque of the motor and to the main shaft.

One aspect according to the present utility model is equipped with annular plate, the annular plate between the retarder and the hammer The spring in compressive state is equipped between the hammer.

Therefore, a kind of hammer tool provided by the utility model can accelerate the speed of operation, improve operating efficiency, and Structure is simple, easy to process, does not increase processing cost and difficulty.

Detailed description of the invention

The utility model will be further described below with reference to the accompanying drawings.

Fig. 1 is the structural schematic diagram of the first embodiment of the utility model.

Fig. 2 is the partial sectional view of Fig. 1 embodiment.

Fig. 3 is the perspective view of the explosion of the striking mechanism of Fig. 1 embodiment.

Fig. 4 is the perspective view of the explosion of the striking mechanism of the second embodiment of the utility model.

In figure, 1. shells；2. motor；21 rotors；3. retarder；4. annular plate；5. spring；6. steel ball；7. hammer；71. the One pawl；8. main shaft；9. anvil block；91. the second pawl；10. tool heads.

Specific embodiment

One specific embodiment of the utility model as shown in Figure 1-3, a kind of hammer tool, including shell 1 and is housed in Motor 2 in shell 1.Motor 2 is for driving the hammer tool and having rotor 21.Rotor 21 is connected as the output end of motor Retarder 3, the retarder 3 are planetary gear mechanism, can transmit power by the rotary force high torque of motor 2 and to main shaft 8.

Striking mechanism includes hammer 7 and anvil block 9, and wherein tool heads 10 are mounted on the output end of anvil block 9, which is used for The rotary force of main shaft 8 is converted to the rotary force and hitting power of tool heads.It is recessed by being provided on the main shaft 8 of the driving rotation of motor 2 Slot and steel ball 6.Steel ball is made of metal.It is provided with around main shaft and is generally formed into cricoid hammer 7, hammer 7 can be relative to Main shaft carries out relative rotation, and can make a relative move in a direction along the axis.Ring is equipped between retarder 3 and hammer 7 Shape plate 4 is equipped with the spring in compressive state between the annular plate and hammer 7.

The process of malleus wheel of a pair of of the channel-shaped upwardly extended along the side of axis, these processs of malleus are formed in the radially inner side of hammer 7 Wheel cooperates with steel ball 6.So hammer 7 can move in a certain range or in a direction along the axis around the axis direction It rotates in a certain range.Main shaft 8 has hole in one end central part close to tool heads 10, and anvil block 9 is pacified by the protrusion of end On main shaft 8.It is circumferentially on the end face of hammer 7 with a plurality of first pawls 71,9 circumferential direction of anvil block, which is equipped with, has a plurality of the Two pawls 91, wherein the quantity of the first pawl is different from the quantity of the second pawl.First pawl and the second pawl are assembled together apart from one another by ground. The present embodiment is preferably as shown in figure 3, hammer two the first pawls of upper circumferential setting, set up three the second pawls anvil block week.So that beating 60 ° or 120 ° are divided between hitting, striking frequency is high, improves service efficiency.

As shown in figure 4, in the second embodiment of the utility model, especially using hammer three the first pawls of upper circumferential setting, anvil Seat sets up two the second pawls week.So that being divided into 60 ° or 120 ° between strike, striking frequency is high, improves service efficiency.

To the disclosed embodiments, it is not restricted to embodiment illustrated herein specifically.For made by the utility model Any modification, equivalent substitution, improvement and etc. all should belong to the protection range of the utility model.

Claims

1. a kind of hammer tool characterized by comprising motor, for driving the hammer tool；Main shaft, by the motor Driving rotation；Tool heads are mounted on the hammer tool, for carrying out；Striking mechanism, including hammer and anvil block, wherein tool heads It is mounted on the output end of the anvil block, the striking mechanism is used to be converted to the rotary force of the main shaft rotary force of tool heads And hitting power；It is circumferentially on the end face of the hammer with a plurality of first pawls, the anvil block circumferential direction is equipped with a plurality of Second pawl, wherein the quantity of first pawl is different from the quantity of second pawl.

2. a kind of hammer tool according to claim 1, it is characterised in that: there are two the first pawls for tool on the hammer, described There are three the second pawls for tool on anvil block.

3. a kind of hammer tool according to claim 1, it is characterised in that: there are three the first pawls for tool on the hammer, described There are two the second pawls for tool on anvil block.

4. according to claim 2 or a kind of hammer tool as claimed in claim 3, it is characterised in that: first pawl and second Pawl is assembled together apart from one another by ground.

5. a kind of hammer tool according to claim 1, it is characterised in that: be equipped with and subtract between the motor and the main shaft Fast device, the retarder are planetary gear mechanism, for transmitting by the rotary force high torque of the motor and to the main shaft Power.

6. a kind of hammer tool according to claim 5, it is characterised in that: be equipped with ring between the retarder and the hammer Shape plate is equipped with the spring in compressive state between the annular plate and the hammer.