CN107228192B

CN107228192B - Gear adjusting device and method

Info

Publication number: CN107228192B
Application number: CN201710465435.7A
Authority: CN
Inventors: 吴明厅; 吕岳
Original assignee: Ken Holding Co ltd
Current assignee: Ken Holding Co ltd
Priority date: 2017-06-19
Filing date: 2017-06-19
Publication date: 2022-10-25
Anticipated expiration: 2037-06-19
Also published as: CN107228192A

Abstract

The invention provides a gear adjusting device and a gear adjusting method, which optimize the structure of the gear adjusting device, realize the switching of a drill gear, a drill gear and a hammer gear of a multi-purpose electric hammer drill hammer by driving a first adjusting unit and/or a second adjusting unit to do linear reciprocating motion along the extension direction of a sliding rod through rotating a knob, achieve the aim of automatic gear resetting when switching among different gears, and have simple structure and convenient processing.

Description

Gear adjusting device and method

Technical Field

The invention belongs to the field of machine manufacturing, and particularly relates to a gear adjusting device and method.

Background

In daily machining or construction, often need use handheld electrical equipment to accomplish hammer, brill or hammer drill function, along with the appearance that multi-functional electric hammer bored, it switches between hammer, brill and hammer drill gear through gear adjusting device, and then realizes hammer, brill or hammer drill function, and multi-functional electric hammer bores with its function various, convenient to carry's advantage has greatly satisfied user's daily demand.

The existing multifunctional electric hammer drill device has more parts, uneven stress of elastic parts, easy abrasion and influence on the service life of the whole machine; and the automatic reset after the gear adjustment can not be realized, the gear blocking phenomenon easily occurs, and the use reliability of the whole machine is influenced.

Disclosure of Invention

The invention aims to provide a gear adjusting device and a gear adjusting method, which are used for solving the technical problem that the gear adjusting device of a multifunctional electric hammer drill in the prior art cannot be automatically reset, simplifying components and achieving the purpose of optimizing the whole structure.

In order to achieve the above object, the present invention provides a gear adjusting device and method for adjusting a gear of a multifunctional electric hammer drill, the gear adjusting device comprising: the clutch comprises a sliding rod, a knob, a clutch, a first adjusting unit and a second adjusting unit, wherein the first adjusting unit and the second adjusting unit are used for driving the clutch to linearly move along the extension direction of the sliding rod;

the first adjusting unit is provided with a first through hole, and the second adjusting unit is provided with a second through hole;

the sliding rod penetrates through the first through hole and the second through hole and is fixedly connected with the multifunctional electric hammer drill;

the knob is used for driving the first adjusting unit and the second adjusting unit to do linear reciprocating motion along the extending direction of the sliding rod.

Optionally, gear adjusting device still includes first attenuator, second attenuator and connecting piece, first attenuator has a third through-hole, the second attenuator has a fourth through-hole, the slide bar runs through in proper order the third through-hole first through-hole the second through-hole with the fourth through-hole with multi-functional electronic hammer drill fixed connection, first attenuator is in first through-hole department with first regulating unit fixed connection, the second attenuator is in second through-hole department with second regulating unit fixed connection, first attenuator is kept away from the one end of knob is passed through the connecting piece with the second attenuator is kept away from the one end of knob is connected.

Optionally, the knob includes the rotator and is used for instructing the knob casing of gear state, the knob casing with the rotator is connected, the rotator set up in first regulating element with between the second regulating element, the rotation of knob casing drives the rotator rotates, rotates the rotator can drive first regulating element and/or the second regulating element is along the extending direction of slide bar is straight reciprocating motion.

Optionally, the rotator includes linking arm and swinging boom, the swinging boom is for the "L" shape of inversion, the one end of linking arm with the knob casing is connected, its other end with one side of swinging boom is connected, the swinging boom with one side that the linking arm is connected with the linking arm is perpendicular.

Optionally, the knob housing is used for driving the connecting arm to rotate, the connecting arm can rotate along the axis of the connecting arm, and the rotating arm is driven to rotate in the autorotation process of the connecting arm.

Optionally, the first adjusting unit and the second adjusting unit respectively have a first jaw and a second jaw for driving the clutch to move linearly along the extending direction of the sliding rod, and the first jaw and the second jaw are both connected to the clutch.

Optionally, the clutch is cylindrical, the cylinder shape has a first recess and a second recess, the opening direction of first recess with the second recess all faces away from the axis direction of clutch, first recess with the second recess respectively with first jack catch with the second jack catch phase-match.

Optionally, the clutch further has a boss, the boss is disposed at a midpoint of the clutch in an extending direction of the clutch, and the first jaw and the second jaw are respectively disposed at two sides of the boss.

Optionally, the first damper and/or the second damper is a spring, a hydraulic buffer and/or a pneumatic buffer.

Optionally, a state of the knob when the first adjusting unit or the second adjusting unit is not driven by the knob to move is defined as an initial position, and an end of the slide bar fixedly connected to the multifunctional electric hammer drill is defined as a fixed end, where the gear adjusting method includes:

the knob is located at the initial position, the multifunctional electric hammer drill is electrified to work, and the multifunctional electric hammer drill realizes the hammer drill function;

the knob is rotated from an initial position to drive the first adjusting unit to linearly move along the extending direction of the sliding rod towards the direction far away from the fixed end, the multifunctional electric hammer drill is powered on to realize a drilling function, after the multifunctional electric hammer drill is powered off, the knob is rotated, and the first adjusting unit and the second adjusting unit return to the initial position;

and after the work is finished, the multifunctional electric hammer drill is powered off, the knob is rotated, and the second adjusting unit and the first adjusting unit return to the initial positions.

Compared with the prior art, the gear adjusting device and the gear adjusting method provided by the invention have the following beneficial effects:

1. the multi-purpose electric hammer drill gear, the drill gear and the hammer gear are switched, and the purpose of automatic gear resetting during switching among different gears is achieved;

2. simple structure and convenient processing.

Drawings

FIG. 1 is a schematic structural diagram of a gear adjustment device according to the present invention;

FIG. 2 is a schematic view of the overall structure of a multifunctional electric hammer drill for gear adjustment according to the present invention;

FIG. 3 is an enlarged view of a portion of a clutch of the gear adjusting device according to the present embodiment;

fig. 4 is a functional structural schematic diagram of a hammer drill of a gear adjusting device provided in this embodiment;

fig. 5 is a functional structure diagram of a gear adjusting device drill provided in this embodiment;

fig. 6 is a schematic functional structure diagram of a hammer of the gear adjusting device according to the present embodiment;

fig. 7 is a schematic view illustrating adjustment functions of the shift adjusting device according to the present embodiment.

The device comprises a sliding rod 1, a knob 2, a knob shell 21, a rotating body 22, a connecting arm 221, a rotating arm 222, a clutch 3, a first groove 31, a second groove 32, a boss 33, a first adjusting unit 4, a first clamping jaw 41, a second adjusting unit 5, a second clamping jaw 51, a first damper 6, a second damper 7 and a connecting piece 8.

Detailed Description

The following describes in more detail embodiments of the present invention with reference to the schematic drawings. Advantages and features of the present invention will become apparent from the following description and claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is provided for the purpose of facilitating and clearly illustrating embodiments of the present invention.

The invention provides a gear adjusting device, which is used for adjusting the gear of a multifunctional electric hammer drill, and referring to fig. 1, the gear adjusting device comprises: the device comprises a sliding rod 1, a knob 2, a clutch 3, a first adjusting unit 4 and a second adjusting unit 5, wherein the first adjusting unit 4 and the second adjusting unit 5 are used for driving the clutch 3 to move linearly along the extending direction of the sliding rod 1; the first adjusting unit 4 is provided with a first through hole 42, and the second adjusting unit 5 is provided with a second through hole 52; the sliding rod 1 penetrates through the first through hole 42 and the second through hole 52 to be fixedly connected with an electric hammer drill; the knob 2 is used for driving the first adjusting unit 4 and the second adjusting unit 5 to do linear reciprocating motion along the extending direction of the slide bar 1.

Referring to fig. 2, the multifunctional electric hammer drill simultaneously engages with the driving gear 9 and the main shaft gear 10 of the yaw bearing through the inner gear groove of the clutch 3, thereby implementing the hammer drill function of the multifunctional electric hammer drill; in this embodiment, the first adjusting unit 4 and the second adjusting unit 5 drive the clutch 3 to move linearly toward the direction close to the driving gear 9, so that the yaw bearing spindle gear 10 is disengaged from the clutch 3, and the driving gear 9 is engaged with the clutch 3, thereby achieving the drilling function of the multifunctional electric hammer drill; the first adjusting unit 4 and the second adjusting unit 5 drive the clutch 3 to move linearly towards the direction close to the main shaft gear 10 of the yaw bearing, so that the driving gear 9 is separated from the clutch 3, the main shaft gear 10 of the yaw bearing is meshed with the clutch 3, and the hammer function of the multifunctional electric hammer drill is further realized. In the invention, the rotary knob 2 can drive the first adjusting unit 4 and the second adjusting unit 5 to do linear reciprocating motion along the extension direction of the slide bar 1, so that the automatic resetting of gears is realized when the multifunctional electric hammer drill is switched.

Preferably, the gear adjusting device further comprises a first damper 6, a second damper 7 and a connecting piece 8, the first damper 6 is provided with a third through hole 61, the second damper 7 is provided with a fourth through hole 71, the slide bar 1 sequentially penetrates through the third through hole 61, the first through hole 42, the second through hole 52 and the fourth through hole 71 and the multifunctional electric hammer drill is fixedly connected, the first damper 6 is fixedly connected with the first adjusting unit 4 at the first through hole 42, the second damper 7 is fixedly connected with the second adjusting unit 5 at the second through hole 52, the first damper 6 is far away from one end of the knob 2 is far away from the second damper 7 through the connecting piece 8, and one end of the knob 2 is connected with one end of the knob. Taking the example that the knob 2 drives the clutch 3 to move towards the direction far away from the end where the slide bar 1 is fixedly connected with the multifunctional electric hammer drill, the clutch 3 moves towards the direction close to the first adjusting unit 4, the first damper 6 is in a compressed state, and the second damper 7 is in a stretched state; when the gear state is switched to enable the clutch 3 to move towards the direction far away from the first adjusting unit 4, the first damper 6 generates a pushing force in the process of recovering from the compression state to the natural state, the pushing force pushes the second damper 7 through the connecting piece 8, and at the moment, the second damper 7 recovers from the tension state to the natural state to achieve automatic reset of the gear.

Preferably, the knob 2 includes a rotating body 22 and a knob housing 21 for indicating a gear state, the knob housing 21 is connected to the rotating body 22, the rotating body 22 is disposed between the first adjusting unit 4 and the second adjusting unit 5, the knob housing 21 rotates to drive the rotating body 22 to rotate, and the rotation of the rotating body 22 can drive the first adjusting unit 4 and/or the second adjusting unit 5 to make a linear reciprocating motion along the extending direction of the sliding rod 1.

Preferably, the rotating body 22 includes a connecting arm 221 and a rotating arm 222, the rotating arm 222 is in an inverted "L" shape, one end of the connecting arm 221 is connected to the knob housing 21, the other end of the connecting arm is connected to one side of the rotating arm 222, and one side of the rotating arm 222 connected to the connecting arm 221 is perpendicular to the connecting arm 221. By adopting the design, the gear state of the multifunctional electric hammer drill is conveniently indicated, and meanwhile, the knob 2 is rotated more labor-saving. The knob housing 21 is configured to drive the connecting arm 221, so that the connecting arm 221 rotates around its own axis, and in the rotation process of the connecting arm 221, the rotating arm 222 is driven to rotate in a direction close to or away from a fixing position of the sliding rod 1 and the electric hammer drill by using the connecting arm 221 as an axis, and the rotation angle is preferably 0 ° to 90 °. By adopting the design, the gear can be adjusted and calibrated by freely selecting the rotating angle under the condition of power failure according to different working condition requirements; and under different rotation angles, the clutch 3 can be meshed with the meshing driving gear 9 and/or the main shaft gear 10 of the yaw bearing, so that the functions of drilling, hammering and hammer drilling are realized.

Referring to fig. 3, the first and second adjusting

units

4 and 5 preferably have first and

second pawls

41 and 51, respectively, for driving the clutch 3 to move linearly in the extending direction of the slide bar 1, and the first and

second pawls

41 and 51 are connected to the clutch 3. Preferably, the clutch 3 is cylindrical, and the cylindrical shape has a first groove 31 and a second groove 32, the opening directions of the first groove 31 and the second groove 32 are both facing away from the axial direction of the clutch 3, and the first groove 31 and the second groove 32 are respectively matched with the first claw 41 and the second claw 51 and are respectively used for being engaged with the first claw 41 and the second claw 51. With this design, when the first claws 41 are engaged in the first grooves 31 and the second claws 51 are engaged in the second grooves 32, and the clutch 3 rotates, the wear of the clutch 3 to the first claws 41 and the second claws 51 is reduced, and the reliability of the structure and the service life are improved.

Preferably, the clutch 3 further has a boss 33, the boss 33 is disposed at a midpoint of the clutch 3 in an extending direction thereof, and the first jaw 41 and the second jaw 51 are disposed on both sides of the boss 33, respectively.

With this design, referring to fig. 4, when the first jaw 41 and the second jaw 51 abut against the two sides of the boss 33, the multifunctional electric hammer drill is in a hammer drill stop, that is, the clutch 3 engages with the driving gear and the main shaft gear of the yaw bearing at the same time, and after being powered on, the multifunctional electric hammer drill realizes the functions of a hammer and a drill.

Referring to fig. 5, when the knob 2 drives the first adjustment unit 4 to move linearly along the extending direction of the slide rod 4 away from the fixing position of the slide rod 4 and the multifunctional electric hammer drill, the knob 2 drives the first jaw 41 to move into the first groove 31, the first damper 6 is in a compressed state, and further drives the connecting piece 8 to push the second damper 7 to move linearly toward the direction close to the first adjustment unit 4, the second jaw 51 contacts with the boss 33 and drives the boss 33 to move linearly toward the direction close to the first adjustment unit 4, and at this time, the multifunctional electric hammer drill is in a drill stop, that is, the clutch 3 engages with a driving gear, and is disengaged from a yaw bearing spindle gear, and after power is turned on, the multifunctional electric hammer drill achieves a drill function.

Referring to fig. 6, when the knob 2 drives the second adjusting unit 5 to linearly move along the extending direction of the slide rod 4 toward the fixed position close to the slide rod 4 and the multifunctional electric hammer drill, the knob 2 drives the second jaw 51 to move into the second groove 32, the second damping damper 7 is in a compressed state, and further drives the connecting member 8 to push the first damper 6 to linearly move toward the direction close to the second adjusting unit 5, the first jaw 41 contacts with the boss 33 and drives the boss 33 to linearly move toward the direction close to the second adjusting unit 5, and at this time, the multifunctional electric hammer drill is in a drill stop, that is, the clutch 3 engages with a main shaft gear of a yaw bearing and is disengaged from a driving gear, and the multifunctional electric hammer drill achieves a hammer function after being powered on.

Referring to fig. 7, when the knob 2 drives the first adjusting unit 4 to move linearly along the extending direction of the slide rod 4 away from the fixing position of the slide rod 4 and the multifunctional electric hammer drill, the knob 2 drives the first jaw 41 to move between the first groove 31 and the boss 33, the first damping damper 6 is in a compressed state, and further drives the connecting member 8 to push the second damper 7 to move linearly toward the direction close to the first adjusting unit 4, the second jaw 51 contacts with the boss 33 and drives the boss 33 to move linearly toward the direction close to the first adjusting unit 4, and at this time, the multifunctional electric hammer drill is in an adjustment gear, that is, the clutch 3 completely engages with the driving gear and will disengage from the main shaft gear of the yaw bearing, and in case of power failure, the user manually rotates the driving gear and/or the main shaft gear of the yaw bearing of the multifunctional electric hammer drill to adjust the multifunctional electric hammer drill.

Preferably, the first damper 6 and/or the second damper 7 is a spring, a hydraulic damper and/or a pneumatic damper. These designs are simple in construction, mature in application, easy to manufacture and low in cost.

The state of the knob 2 when the first adjusting unit 4 or the second adjusting unit 5 is not driven to move is defined as an initial position, one end of the sliding rod 4 connected with the multifunctional electric hammer drill is a fixed end, and the gear adjusting method comprises three working gears which are respectively:

hammering and drilling a gear: when the knob 2 is positioned at the initial position, the multi-purpose electric hammer drill is electrified to work and is a hammer drill gear;

drilling a gear: the knob 2 is rotated from an initial position to drive the first adjusting unit 4 to linearly move along the extending direction of the sliding rod 1 towards the direction far away from the fixed end, and the multi-purpose electric hammer drill is powered on to work and is a drill stop; after the work is finished, the electric hammer drill is powered off, the knob 2 is rotated to return to the initial position, and the first adjusting unit 4 and the second adjusting unit 5 are driven to return to the initial position at the same time, so that the purpose of automatic reset is achieved;

hammering: the knob 2 is rotated from the initial position to drive the second adjusting unit 5 to linearly move towards the direction close to the fixed end along the extending direction of the slide bar 1, and the electric hammer drill is powered on to work and is a hammer stop; after the work is finished, the electric hammer drill is powered off, the knob 2 is rotated to return to the initial position, and the second adjusting unit 5 and the first adjusting unit 4 are driven to return to the initial position at the same time, so that the purpose of automatic reset is achieved.

By adopting the design, the structure of the gear adjusting device is simplified, and the purpose that the first adjusting unit 4 and the second adjusting unit 5 can be automatically reset when switching is carried out between different gears is achieved.

In summary, in the gear adjusting device and the gear adjusting method provided by the embodiments of the present invention, the structure of the gear adjusting device is optimized, and the first adjusting unit and/or the second adjusting unit are/is driven by rotating the knob to linearly reciprocate along the extending direction of the slide rod, so that the hammer drill gear, the drill gear and the hammer gear of the multi-purpose electric hammer drill are realized, and the purpose of automatic gear resetting when switching between different gears is achieved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any person skilled in the art can make any equivalent substitutions or modifications on the technical solutions and technical contents disclosed in the present invention without departing from the scope of the technical solutions of the present invention, and still fall within the protection scope of the present invention without departing from the technical solutions of the present invention.

Claims

1. The utility model provides a gear adjusting device for adjust the gear of multi-functional electric hammer drill, its characterized in that, gear adjusting device includes:

the clutch comprises a sliding rod, a knob, a clutch, a first adjusting unit and a second adjusting unit, wherein the first adjusting unit and the second adjusting unit are used for driving the clutch to linearly move along the extension direction of the sliding rod;

the knob is used for driving the first adjusting unit and the second adjusting unit to do linear reciprocating motion along the extending direction of the sliding rod;

the gear adjusting device further comprises a first damper, a second damper and a connecting piece, wherein the first damper is provided with a third through hole, the second damper is provided with a fourth through hole, the slide rod sequentially penetrates through the third through hole, the first through hole, the second through hole and the fourth through hole to be fixedly connected with the multifunctional electric hammer drill, the first damper is fixedly connected with the first adjusting unit at the first through hole, the second damper is fixedly connected with the second adjusting unit at the second through hole, and one end of the first damper, far away from the knob, is connected with one end of the second damper, far away from the knob, through the connecting piece;

the first adjusting unit and the second adjusting unit are respectively provided with a first clamping jaw and a second clamping jaw which are used for driving the clutch to linearly move along the extension direction of the sliding rod, and the first clamping jaw and the second clamping jaw are connected with the clutch;

the clutch is characterized in that the clutch is also provided with a boss, the boss is arranged at the midpoint of the clutch in the extending direction of the clutch, and the first clamping jaw and the second clamping jaw are respectively arranged at two sides of the boss.

2. The gear adjusting device according to claim 1, wherein the knob includes a rotating body and a knob housing for indicating a gear state, the knob housing is connected to the rotating body, the rotating body is disposed between the first adjusting unit and the second adjusting unit, the rotating body is rotated to drive the rotating body to rotate, and the rotating body is rotated to drive the first adjusting unit and/or the second adjusting unit to reciprocate linearly along an extending direction of the sliding rod.

3. A shift position adjusting device according to claim 2, wherein said rotating body includes a connecting arm and a rotating arm, said rotating arm is in an inverted "L" shape, one end of said connecting arm is connected to said knob housing, the other end thereof is connected to one side of said rotating arm, and one side of said rotating arm connected to said connecting arm is perpendicular to said connecting arm.

4. The gearshift adjusting device of claim 3, wherein the knob housing is configured to rotate the connecting arm, the connecting arm is capable of rotating about its axis, and the connecting arm rotates the rotating arm during rotation.

5. A range adjustment device as set forth in claim 1, wherein said clutch is cylindrical in shape, said cylindrical shape having a first recess and a second recess, said first recess and said second recess opening in a direction away from said axis of said clutch, said first recess and said second recess mating with said first pawl and said second pawl, respectively.

6. A gear adjustment device as claimed in claim 1, characterized in that said first damper and/or said second damper is a spring, a hydraulic damper and/or a pneumatic damper.

7. The method for adjusting a gear position using a gear position adjusting device according to any one of claims 1-6, wherein a state of the knob when the first adjusting unit or the second adjusting unit is not driven to move is defined as an initial position, and an end of the slide rod fixedly connected to the multifunctional electric hammer drill is defined as a fixed end, and the method for adjusting a gear position comprises:

the knob is rotated from the initial position, so that the knob drives the second adjusting unit to move along the extending direction of the sliding rod towards the direction close to the fixed end in a linear motion mode, the multifunctional electric hammer drill is powered on to work to achieve a hammer function, after the work is finished, the multifunctional electric hammer drill is powered off and is rotated to the knob, and the second adjusting unit and the first adjusting unit return to the initial position.