JP4008892B2 - Multistage shift device - Google Patents

Multistage shift device Download PDF

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JP4008892B2
JP4008892B2 JP2004080903A JP2004080903A JP4008892B2 JP 4008892 B2 JP4008892 B2 JP 4008892B2 JP 2004080903 A JP2004080903 A JP 2004080903A JP 2004080903 A JP2004080903 A JP 2004080903A JP 4008892 B2 JP4008892 B2 JP 4008892B2
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gear
inertia
shift device
multi
teeth
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JP2005265115A (en
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玲玲 游
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強網工業股▲ふん▼有限公司
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  The present invention relates to a kind of multi-stage shift device, and more particularly, to a gear mechanism that achieves multi-stage speed change by changing the rotational speed or direction of an annular gear of a planetary reduction gear using a switching device and an inertia gear set.

  Many known electric power tool devices, particularly electric rotary tools, provide a multi-stage shift or multi-stage torque using a reduction mechanism. In general, such a speed reduction mechanism is in a planetary gear mechanism, and it is different by selecting parts such as a planetary gear, a sun gear, an internal gear, and a planetary frame for output, input, or fixing. Achieve the function of input and output reduction ratio.

  Many of the designs related to shift shifting of known power tools employ a complex multi-stage gear conversion mechanism, but such a method can achieve the purpose of multi-speed shifting, but can manufacture and assemble complex parts. This increases the manufacturing cost. Further, such a shift transmission mechanism is normally limited to two-stage or three-stage transmission, and has no design expandability. The present invention is provided to remedy the drawbacks of the design related to shift shifting of such conventional power tool devices.

The invention of claim 1 is a multi-stage shift device composed of an input gear, a seat, a reduction gear, a switching board, and a plurality of inertia gear sets,
The seat body is a columnar case in which a hollow housing groove is formed, and at least one side is formed with a guide groove penetrating along the radial direction.
The speed reducer is mounted in a housing groove inside the seat body, and a planetary frame in which a plurality of planetary gears meshing with the input gear are pivotally arranged at the upper end, and an output gear extended from the bottom end of the planetary frame, A ring gear in which inner and outer teeth are formed on the inner and outer circumferences, and each planetary gear meshes with the inner teeth, and a plurality of gears pivoted in the housing groove of the seat body and mesh with the outer teeth of the ring gear A transmission gear,
The switching board is a board body having a perforation formed in the center, and a plurality of fan-shaped concave grooves recessed inward are provided around the switching board in the radial direction, and each concave groove is provided with a transmission gear. A plurality of convex teeth are formed in each concave groove, and a rod extending outward is provided at one place around the switching board, and the rod penetrates the guide groove of the seat body. Protruding,
The plurality of inertia gear sets include two inertia gears, each of which is pivotally mounted on the surface of the switching board and meshing with each other, and the radial position of the outer tip of each inertia gear is the position of the switching board. It is the same as the convex tooth, but the arc angle position is shifted from the convex tooth position, one of the inertia gears meshes with the input gear, the other inertia gear does not mesh with the input gear,
The rod in the switching board is driven and rotated so that one of the inertia gears in the inertia gear set or the convex teeth in the switching board is engaged with the transmission gear. The multi-stage shift device is characterized by the following.
The invention according to claim 2 is the multistage shift device according to claim 1, wherein an elastic convex edge is formed on one side of the guide groove on the outer surface of the seat body, and the elastic convex edge provides an outward elastic locking force. The push button is fixed to the outer end of the rod, and the push button has an arc structure coinciding with the curved surface of the outer surface of the seat body so that a plurality of concave surfaces are formed on the inner surface, and an elastic convex edge is combined with the concave surface. The multistage shift device is characterized by the above.
According to a third aspect of the present invention, in the multi-stage shift device according to the first aspect, in the inertia gear set, the inertia gear meshing with the input gear has an upper inertia gear and a lower inertia gear having different number of teeth fixed coaxially, and The multi-stage shift device is characterized in that the inertia gear meshes with the input gear and the other inertia gear of the inertia gear set, and the lower inertia gear meshes with the transmission gear.
According to a fourth aspect of the present invention, in the multi-stage shift device according to the first aspect, in the inertia gear set, the inertia gear that does not mesh with the input gear is configured such that the upper inertia gear and the lower inertia gear having different number of teeth are fixed coaxially. inertial gear meshes with the other of the inertia wheel of inertia wheel set, the lower the inertia wheel is characterized in that mesh with the conduction gear, and a multistage shift device.
According to a fifth aspect of the present invention, in the multi-stage shift device according to the first aspect, the upper input gear and the lower input gear having different numbers of teeth are fixed coaxially, and the input gear is an inertia gear by the upper input gear. The multi-stage shift device is characterized in that it meshes with one inertia gear of the set, and the input gear meshes with each planetary gear in the speed reducer by means of the lower input gear.
According to a sixth aspect of the present invention, in the multi-stage shift device according to the first aspect, the upper transmission gear and the lower transmission gear having different numbers of teeth are fixed coaxially in the transmission gear in the reduction gear, and the reduction gear is the upper transmission gear. Is engaged with an arbitrary inertia gear in the inertia gear set, and the reduction gear is engaged with an annular gear in the reduction gear by a lower transmission gear.
According to a seventh aspect of the invention, in a multistage shifting device according to claim 1, wherein the kite is separately added a plurality of gears in inertial gear set, and a multi-stage shift device.
The invention according to claim 8 is the multi-stage shift device according to claim 1, wherein an inertia gear, in which upper inertia teeth and lower inertia gears having different numbers of teeth are coaxially fixed, is added to the inertia gear set. The multi-stage shift device is characterized in that the number of transmission combinations of transmission from the set to the transmission gear is increased.

1. In the multistage shift device of the present invention, parts production and assembly of the reduction gear, the switching device, and the inertia gear set are simple, and the manufacturing cost can be reduced.
2. The multistage shift device of the present invention has a small number of layers of the speed reducer, the switching device, and the inertia gear set, and can reduce the volume of the speed change mechanism.
3. The multi-stage shift device of the present invention can increase or change the number of gears by increasing or changing the inertia gear of the inertia gear set, and has a design enhancement.

  The multistage shift device of the present invention includes an input gear, a seat, a speed reducer, an annular gear, a transmission gear, a switching board, and a plurality of annular gear sets. The seat body is a columnar case having a hollow receiving groove formed therein, and includes at least one guide groove penetrating outward. The speed reducer is mounted in a housing groove inside the seat body, and includes a planetary frame in which a plurality of planetary gears meshing with the input gear are pivotally arranged at the upper end, and an output gear is extended from the bottom end of the planetary frame. Yes. Inner teeth and outer teeth are provided on the inner ring and outer ring surfaces of the ring gear, and each planetary gear meshes with the inner teeth of the ring gear. Each transmission gear is pivotally mounted in the housing groove of the seat body, and meshes with the external teeth of the ring gear. A rod is extended outward along the radial direction around one place of the switching board, and the rod projects through the guide groove of the seat body. In the plurality of inertia gear sets, two inertia gears are pivoted on the surface of the switching board and mesh with each other, and the radial position of the tooth tip outside each inertia gear and the convex teeth in the switching board are the same. However, the position of the arc angle is shifted from the position of the convex teeth, and one inertia gear meshes with the input gear, and the other inertia gear does not mesh with the input gear. By rotating the switching board by driving the rod in the switching board described above, one inertia gear in the inertia gear set or the convex teeth in the switching board can be meshed with the transmission gear.

  1 and 2 show a preferred embodiment of the multistage shift device of the present invention. It is composed of an input gear 1, a seat body 2, a reduction gear 3, a switching device 4, and a plurality of inertia gear sets 5.

  The input gear 1 is a columnar gear for inputting rotational power.

  The seat body 2 is a columnar case, in which a hollow housing groove 21 is formed, and a guide groove 22 that penetrates is formed along at least one side of the housing groove 21 along the radial direction. An elastic convex edge 23 is formed on one side of 22, and the elastic convex edge 23 provides an outward elastic locking force.

  The speed reducer 3 is mounted in a receiving groove 21 inside the seat body 2, which comprises a planetary frame 31, a plurality of planetary gears 32, an annular gear 33 and a plurality of transmission gears 34. Among them, the planetary frame 31 is a disc body, and a plurality of planetary gears 32 having the same number of teeth are provided in an annular shape at the upper end thereof, the output gear 31a is extended from the bottom end of the planetary frame 31, and the output gear 31a is Power is output to the tool. The ring gear 33 is a circular ring body, and inner teeth 33 a are provided on the inner ring surface, and outer teeth 33 b are provided on the outer ring surface. The planetary gears 32 of the planetary frame 31 are simultaneously connected to the ring gear 33. The planetary gear 33 meshes with the input gear 1 to form a planetary reduction mechanism. Each conduction gear 34 is disposed so as to surround the annular gear 33, is pivoted in the receiving groove 21 of the seat body 2, and meshes with the external teeth 33 b of the annular gear 33.

  The switching device 4 includes a switching board 41 and a push button 42. Among them, the switching board 41 is a circular board having a hole 41a formed in the center, and the input gear 1 passes through the hole 41a, and a plurality of fan-shaped grooves 41b recessed inwardly around the switching board 41 have a diameter. Each concave groove 41b corresponds to each conductive gear 34, and a plurality of convex teeth 41c are formed in each concave groove 41b. Further, an outwardly extending rod 41 d is provided at one place around the switching board 41 of the switching device 4, and the rod 41 d passes through the guide groove 22 of the seat body 2. The push button 42 is fixed to the rod 41d and has an arc structure that coincides with the curved surface of the outer surface of the seat body 2. A plurality of concave surfaces 42a are formed inside the arc structure of the push button 42 to form the elastic convex edge 23. To be combined.

  Each inertia gear set 5 includes a first inertia gear 51 and a second inertia gear 52, and each first inertia gear 51 pivots on the surface of the switching board 41 so as to surround a perforation 41 a in the switching board 41 of the switching device 4. And the radial position of the tooth tip outside each first inertia gear 51 is the same as that of the convex tooth 41c in the switching board 41, but the arc angle position is the same as that of the convex tooth 41c. It is out of position. Each second inertia gear 52 is pivotally provided on the surface of the switching board 41 so as to surround the perforation 41a in the switching board 41 of the switching device 4, and meshes with the corresponding first inertia gear 51, and the second inertia gear 52. The radial position of the outside tooth tip is the same as the convex tooth 41c of the switching board 41, but the arc angle position is shifted from the convex tooth 41c.

  In the above-described multi-stage shift device of the present invention, the input gear 1 passes through the perforation 41a of the switching board 41 of the switching device 4, and each first inertia gear 51 in the switching device 4 and each planetary gear in the speed reduction device 3. The output gear 31a at the bottom of the planetary frame 31 in the speed reducer 3 outputs power. The planetary gears 32 in the reduction gear 3 are simultaneously meshed with the input gear 1 and the internal teeth 33 a of the ring gear 33, and the external teeth 33 b of the ring gear 33 are meshed with the conduction gear 34.

  The shift mechanism of the multistage shift device of the present invention will be described below.

  As shown in FIG. 3, when the push button 42 is pushed and rotated along the seat body 2, the concave surface 42 a inside the push button 42 forcibly deforms the elastic convex edge 23 along the radial direction. When the next concave surface 42a corresponds to the elastic convex edge 23, the elastic convex edge 23 is engaged in the concave surface 42a, thus achieving the positioning action, and the switching device 4 is switched. The rotational position of the board 41 is controlled.

  As shown in FIG. 4, when the switching board 41 of the switching device 4 is turned and each convex tooth 41c in the concave groove 41b meshes with each conduction gear 34 in the reduction gear 3, the switching device 4 The first inertia gears 51 and the second inertia gears 52 do not mesh with the transmission gears 34, and the transmission gears 34 are fixed and fixed under the restraint of the switching board 41. As a result, the ring gear 33 that meshes simultaneously with the transmission gears 34 is also constrained and does not rotate. As a result, when the power input by the input gear 1 reaches the reduction gear 3, each planetary gear 32, the first inertia gear 51, the first gear. Although the two inertia gears 52 are driven, each of the first inertia gears 51 and the second inertia gears 52 only idles, the planetary gear 32 generates relative motion with the internal teeth 33a of the ring gear 33, and the The planetary frame 31 is rotated, and at the same time, power is output by the output gear 31a. Among them, a deceleration action occurs during transmission of power from the input gear 1 to the output gear 31a, and the output torque is increased.

  As shown in FIG. 5, when the switching board 41 of the switching device 4 is turned and each first inertia gear 51 is meshed with each transmission gear 34 in the speed reduction device 3, each convex in the switching device 4. The teeth 41 c and the second inertia gear 52 do not mesh with the transmission gear 34, and each transmission gear 34 is driven by the first inertia gear 51 and rotates in the same direction as the input gear 1. As a result, the ring-shaped gears 33 simultaneously meshed with the respective transmission gears 34 are also driven by the respective transmission gears 34 and rotated in the opposite direction to the input gear 1, whereby when the power of the input gear 1 reaches the reduction gear 3, The planetary gear 32, the first inertia gear 51, and the second inertia gear 52 are driven, but each second inertia gear 52 only rotates idly, and the planetary gear 32 moves relative to the internal teeth 33 a of the ring gear 33. And the planetary frame 31 is rotated, and power is output by the output gear 31a. Among them, a deceleration action occurs in the transmission of the power of the input gear 1 to the output gear 31a, and the output torque is increased.

  As shown in FIG. 6, when the switching board 41 of the switching device 4 is turned and each second inertia gear 52 is meshed with each transmission gear 34 in the speed reduction device 3, each switching device 4 in the switching device 4. The convex teeth 41 c and the first inertia gear 51 do not mesh with the conduction gear 34, and each conduction gear 34 is driven by each second inertia gear 52 and rotates in the opposite direction to the input gear 1. As a result, the ring-shaped gears 33 simultaneously meshed with the respective transmission gears 34 are also driven in the same direction as the input gear 1 by the drive of the respective transmission gears 34, and when the input power of the input gear 1 reaches the speed reducer 3, each planetary gear 33 is rotated. The gear 32, the first inertia gear 51, and the second inertia gear 52 are driven, the planetary gear 32 generates relative movement with the internal teeth 33a of the ring gear 33, and the planetary frame 31 rotates, and the output gear 31a Output power. Among these, in the process where the power of the input gear 1 reaches the output gear 31a, a deceleration action occurs and the output torque is increased.

  In the multi-stage shift device of the present invention, the main spirit is to provide transmission rotational speed ratio conversion (including forward rotation, reverse rotation, or fixation) by the switching device 4 and the inertia gear set 5, and thereby the power of the transmission gear 34. After transmission to the ring gear 33, the ring gear 33 generates corresponding different rotational speeds, thereby generating different reduction ratio combinations in the reduction gear 3, so that the power of the input gear 1 is driven by the reduction gear 3. When transmitting and outputting by the output gear 31a of the planetary frame 31, the purpose of the multi-stage shift is achieved. As a result, the gear system constituted by the input gear 1 and the transmission gear 34 is combined with several types of transmission combinations of the gear set configured through the inertia gear set 5, and the multi-stage shift of the present invention is performed by the switching mechanism of the switching device 4. A device is achieved. Several other specific implementation schemes are described below.

  Please refer to FIG. In the present embodiment, each first inertia gear 51 of the inertia gear set 5 has a first upper inertia gear 51a and a first lower inertia gear 51b having different numbers of teeth, which are coaxially fixed to each other to have a speed change action, and The first inertia gear 51 is engaged with the input gear 1 and the second inertia gear 52 by the first upper inertia gear 51a, and the first inertia gear 51 is engaged with the transmission gear 34 by the first lower inertia gear 51b.

  Please refer to FIG. In this embodiment, each of the second inertia gears 52 of the inertia gear set 5 has a second upper inertia gear 52a and a second lower inertia gear 52b having different numbers of teeth, which are coaxially fixed to form a gear having a speed change action. The two inertia gears 52 are engaged with the first inertia gear 51 by the second upper inertia gear 52a, and the second inertia gear 52 is engaged with the transmission gear 34 by the second lower inertia gear 52b.

  See FIG. In this embodiment, the input gear 1 has an upper input gear 11 and a lower input gear 12 with different numbers of teeth fixed coaxially, and the input gear 1 meshes with the first inertia gear 51 by the upper input gear 11. The gear 1 is meshed with each planetary gear 32 in the reduction gear 3 by the lower input gear 12.

  Please refer to FIG. In this embodiment, the transmission gear 34 in the reduction gear 3 has an upper transmission gear 34a and a lower transmission gear 34b with different numbers of teeth fixed coaxially, and the reduction gear 3 is included in the inertia gear set 5 by the upper transmission gear 34a. The reduction gear 3 is engaged with the annular gear 33 in the reduction gear 3 by the lower transmission gear 34b.

  The gear set including the first inertia gear 51 and the second inertia gear 52 in each of the above-described inertia gear sets 5 transmits the power of the input gear 1 to each of the transmission gears 34. A plurality of gears can be added to assist the power transmission of the gear system. Alternatively, an inertia gear having a plurality of speed change actions can be added to increase the number of speed change combinations of transmission from the inertia gear set 5 to the transmission gear 34.

It is a three-dimensional exploded view of the multistage shift device of the present invention. It is a top view of the mechanism below the switching board of the multistage shift device of the present invention. FIG. 3 is a cross-sectional view in the local axial direction of a push button in the multistage shift device of the present invention. It is a sectional view in the direction of the local axis of the first stage speed of the multistage shift device of the present invention. FIG. 3 is a sectional view in the local axial direction of the second stage speed of the multistage shift device of the present invention. FIG. 6 is a sectional view in the local axial direction of the third stage speed of the multistage shift device of the present invention. It is a local three-dimensional figure of 2nd Example of the multistage shift apparatus of this invention. It is a local three-dimensional figure of 3rd Example of the multistage shift apparatus of this invention. It is a local three-dimensional figure of 4th Example of the multistage shift apparatus of this invention. It is a local three-dimensional view of the fifth embodiment of the multistage shift device of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Input gear 11 Upper input gear 12 Lower input gear 2 Seat 21 Housing groove 22 Guide groove 23 Elastic convex edge 3 Reduction gear 31 Planetary frame 31a Output gear 32 Planetary gear 33 Ring-shaped gear 33a Internal tooth 33b External tooth 34 Conductive gear 34a Upper Transmission gear 34b Lower transmission gear 4 Switching device 41 Switching board 41a Perforation 41b Groove 41c Convex tooth 41d Rod 42 Push button 42a Concave surface 5 Inertia gear set 51 First inertia gear 51a First upper inertia gear 51b First lower inertia gear 52 First 2 inertia gear 52a 2nd upper inertia gear 52b 2nd lower inertia gear

Claims (8)

  1. It is a multi-stage shift device composed of an input gear, a seat, a speed reducer, a switching board and a plurality of inertia gear sets,
    The seat body is a columnar case in which a hollow housing groove is formed, and at least one side is formed with a guide groove penetrating along the radial direction.
    The speed reducer is mounted in a housing groove inside the seat body, and a planetary frame in which a plurality of planetary gears meshing with the input gear are pivotally arranged at the upper end, and an output gear extended from the bottom end of the planetary frame, A ring gear in which inner and outer teeth are formed on the inner and outer circumferences, and each planetary gear meshes with the inner teeth, and a plurality of gears pivoted in the housing groove of the seat body and mesh with the outer teeth of the ring gear A transmission gear,
    The switching board is a board body having a perforation formed in the center, and a plurality of fan-shaped concave grooves recessed inward are provided around the switching board in the radial direction, and each concave groove is provided with a transmission gear. A plurality of convex teeth are formed in each concave groove, and a rod extending outward is provided at one place around the switching board, and the rod penetrates the guide groove of the seat body. Protruding,
    The plurality of inertia gear sets include two inertia gears, each of which is pivotally mounted on the surface of the switching board and meshing with each other, and the radial position of the outer tip of each inertia gear is the position of the switching board. It is the same as the convex tooth, but the arc angle position is shifted from the convex tooth position, one of the inertia gears meshes with the input gear, the other inertia gear does not mesh with the input gear,
    The rod in the switching board is driven and rotated so that one of the inertia gears in the inertia gear set or the convex teeth in the switching board is engaged with the transmission gear. A multi-stage shift device.
  2.   The multistage shift device according to claim 1, wherein an elastic convex edge is formed on one side of the guide groove on the outer surface of the seat body, the elastic convex edge provides an outward elastic locking force, and the outer end of the rod The push button is fixed to, and the push button has an arc structure coinciding with the curved surface of the outer surface of the seat body, a plurality of concave surfaces are formed on the inside, and an elastic convex edge is combined with the concave surface, Multistage shift device.
  3.   2. The multi-stage shift device according to claim 1, wherein in the inertia gear set, the inertia gear meshing with the input gear is formed by coaxially fixing an upper inertia gear and a lower inertia gear having different numbers of teeth, and the upper inertia gear includes the input gear and the inertia. A multi-stage shift device, characterized in that it meshes with the other inertia gear of the gear set, and the lower inertia gear meshes with the transmission gear.
  4. In multi-stage shift device according to claim 1, in the inertia wheel set inertia wheel and a lower inertia wheel on the inertia wheel is different numbers of teeth do not mesh with the input gear is fixed coaxially, the upper inertial gear inertia gearset A multi-stage shift device, wherein the lower inertia gear meshes with the transmission gear and the lower inertia gear meshes with the transmission gear.
  5.   2. The multi-stage shift device according to claim 1, wherein the input gear has an upper input gear and a lower input gear having different numbers of teeth fixed coaxially, and the input gear is connected to one inertia gear of the inertia gear set by the upper input gear. A multi-stage shift device, wherein the input gear meshes with each planetary gear in the speed reducer by a lower input gear.
  6.   2. The multi-stage shift device according to claim 1, wherein an upper transmission gear and a lower transmission gear having different numbers of teeth are fixed coaxially in the transmission gear in the reduction gear, and the reduction gear is connected to the inertia gear set by the upper transmission gear. A multi-stage shift device that meshes with an arbitrary inertia gear, and the speed reducer meshes with an annular gear in the speed reducer by a lower transmission gear.
  7. In multi-stage shifting device of claim 1, wherein the kite is separately added a plurality of gears in inertial gear set, the multi-stage shift device.
  8.   2. The multi-stage shift device according to claim 1, wherein an inertia gear in which upper and lower inertia gears having different numbers of teeth are coaxially fixed is added in the inertia gear set, and transmission from the inertia gear set to the transmission gear is performed. A multi-stage shift device characterized in that the number of shift combinations is increased.
JP2004080903A 2004-03-19 2004-03-19 Multistage shift device Expired - Fee Related JP4008892B2 (en)

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JP2004080903A JP4008892B2 (en) 2004-03-19 2004-03-19 Multistage shift device

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JP2005265115A JP2005265115A (en) 2005-09-29
JP4008892B2 true JP4008892B2 (en) 2007-11-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102049549B (en) * 2009-10-27 2013-03-06 苏州宝时得电动工具有限公司 Drilling tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102049549B (en) * 2009-10-27 2013-03-06 苏州宝时得电动工具有限公司 Drilling tool

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