TWM452271U - Transmission system for switching output powers - Google Patents

Description

Switchable speed drive system

This creation relates to a transmission system that can switch speeds, especially a transmission system that can convert the power to a plurality of different output speeds under the condition that the power supplied by the motor is constant and constant.

Many home appliances, office equipment, and inspection supplies, such as fruit and vegetable machines, scanners, centrifuges, etc., require a motor as their drive; these devices also require shifting functions to provide different speeds for different needs. For example, the scanning device needs to provide different scanning speeds for different resolutions; the centrifuge rotates slowly and slowly as needed during the detection of blood, sewage, etc., to reliably separate the components of the sample. Conventional scanning devices use a gearbox with a variable reduction ratio, usually by adding a set of motors or by changing the speed of the motor to achieve a shift. Other devices also typically employ similar mechanisms. However, adding a set of power driving devices such as motors will squeeze the installation space of other devices, which increases the design difficulty. If the motor speed is continuously switched, it is easy to cause the motor to run fatigue and reduce its service life.

One of the aims of the present invention is to provide a switchable speed transmission system that utilizes a clutch to achieve a simple and compact transmission that switches the output speed.

To achieve the above object, the present invention provides a switchable speed transmission system including a motor, a first speed switching transmission shaft, a second speed switching transmission shaft, and a power output member. The motor is provided with an input shaft that transmits one of the power generated by the motor at a particular speed. A first gear, a second gear and a first clutch are mounted on the first speed switching drive shaft. The first gear is coupled to the input shaft and receives the power to drive the first speed to switch the drive shaft. The first clutch selectively engages the second gear and the first speed to switch the drive shaft such that the second gear is driven by the first speed switching drive shaft. A third gear, a fourth gear and a second clutch are sleeved on the second speed switching drive shaft. The third gear receives power from the first gear. The second clutch selectively engages the third gear and the second speed switching drive shaft such that the second speed switching drive shaft is driven by the third gear. The fourth gear is coupled to the second gear. The fourth gear is alternatively driven by the second speed-switching drive shaft via the second clutch to engage the third gear or is driven by the second gear. A power output component, driven by the fourth gear, outputs power having a first rotational speed or a second rotational speed to an external component.

With the help of the above-mentioned technical means, this creation has the advantage of not occupying space compared with the conventional transmission system, and the motor does not need to continuously switch the rotation speed, not only can prolong the service life, but also the performance can be optimally utilized.

In order to make the above content of the present invention more comprehensible, a preferred embodiment will be described below in detail with reference to the accompanying drawings.

1 and 2 are perspective views of a preferred embodiment of the present invention. As shown in FIG. 1 and FIG. 2, the speed-switchable transmission system 100 includes a motor 110, a first speed switching transmission shaft 120, a second speed switching transmission shaft 130, and a power output member 160. The power generated by the motor 110 is transmitted to the power output member 160 via the first rotational speed switching transmission shaft 120 and the second rotational speed switching transmission shaft 130. The motor 110 is provided with an input shaft 112 for transmitting a power P0 generated by the motor 110 at a specific rotational speed. The first speed switching transmission shaft 120 is provided with a first gear 122, a second gear 124, and a first clutch 126 for controlling the power transmission path. The first rotational speed switching drive shaft 120 and the second rotational speed switching drive shaft 130 are disposed in parallel with each other.

The first gear 122 is mounted to the first speed switching transmission shaft 120 and is coupled to the input shaft 112 to receive the power P0 to drive the first speed to switch the transmission shaft 120. In the present embodiment, the first gear 122 and the input shaft 112 are connected by a belt 102, but may be connected through other transmission components, such as gears. The second gear 124 is sleeved on the first rotational speed switching drive shaft 120. The first clutch 126 is mounted on the first speed switching transmission shaft 120, selectively engaging the second gear 124 and the first speed switching transmission shaft 120, and the second gear 124 is driven by the first speed switching transmission shaft 120. In detail, the first gear 122 starts to rotate after receiving the power P0, and drives the first speed to switch the transmission shaft 120; therefore, when the second gear 124 is engaged with the first speed switching transmission shaft 120, the rotation of the first gear 122 The second gear 124 is pivoted together. If the first clutch 126 does not engage the second gear 124 with the first rotational speed switching drive shaft 120, the second gear 124 remains stationary.

A second gear 132, a fourth gear 134, and a second clutch 136 for controlling the power transmission path are disposed on the second speed switching transmission shaft 130. The third gear 132 is sleeved on the second rotational speed switching drive shaft 130 and receives power from the first gear 122. The second clutch 130 is mounted on the second speed switching transmission shaft 130 and selectively engages the third gear 132 and the second speed switching transmission shaft 130 such that the second speed switching transmission shaft 130 is driven 132 by the third gear. The fourth gear 134 is sleeved on the second speed switching transmission shaft 130 and connected to the second gear 124. The fourth gear 134 can be driven by the second speed switching transmission shaft 130 in a state where the second clutch 136 engages the third gear 132. More clearly, the third gear 132 starts to rotate after receiving the power. When the second clutch 136 engages the third gear 132 and the second rotational speed switching transmission shaft 130, the rotation of the third gear 132 drives the second rotational speed to switch the transmission shaft 130 to rotate. And further driving the fourth gear 134 fixed to the second rotational speed switching drive shaft 130. If the second clutch 136 does not engage the third gear 132 and the second rotational speed switching drive shaft 130, the rotational state of the fourth gear 134 is not affected by the rotation of the third gear 132.

In the present embodiment, the transmission system 100 further includes a first transmission gear train 140 and a second transmission gear train 150 for transmitting power. The first transmission gear train 140 engages the first gear 122 and the third gear 132; the second transmission gear train 150 engages the second gear 124 and the fourth gear 134. The first transmission gear train 140 and the second transmission gear train 150 may be a common gear train or a composite gear train as shown in FIG.

The power output component 160 is driven by the fourth gear 134 to output a power V2 having a first rotational speed V1 or a second rotational speed to an external component 170. The first clutch 126 and the second clutch 136 are controlled by a controller (not shown) to selectively engage or switch the second gear 124 to the first rotational speed of the transmission shaft 120, and the third gear 132 and the second rotational speed. The drive shaft 130 is switched and disengaged. 3 is a schematic diagram of speed switching according to a preferred embodiment of the present invention. As shown in FIG. 3, when the transmission system 100 is instructed to output power having the first rotational speed V1, the first clutch 126 releases the second gear 124 and the second clutch 136 engages the third gear 132. In this case, the second gear 124 cannot be rotated, and the power P0 is transmitted to the outputs of the third gear 132 and the fourth gear 134 to be converted into output power having the first rotational speed V1. When the transmission system 100 is instructed to output power having the second speed V2, the first clutch 126 engages the second gear 124 and the second clutch 136 releases the third gear 132. In this case, the power P0 is transmitted through the second gear 124, and the fourth gear 134 is driven to be converted into an output power having the second rotational speed V2.

Therefore, when the transmission system 100 is instructed to output the power having the first rotational speed V1, the power 110 outputted by the motor 110 at the specific rotational speed drives the input shaft 112 to drive the first gear 122, the third gear 132, the fourth gear 134, and the power. The component 160 is output to output power having a first rotational speed V1. When the transmission system 100 is instructed to output the power having the second rotation speed V2, the power P0 drives the input shaft 112 to drive the first gear 122, the second gear 124, the fourth gear 134 and the power output component 160 to output the second rotation speed. The power of V2.

As shown in FIG. 2, the first gear 122 is a composite gear, and includes a first driving gear 122a and a first driven gear 122b. The first driven gear 122b is coupled to the input shaft 112 by a belt 102. The first driving gear 122a is used to drive the third gear 132. The first drive gear 122a meshes with the gear 142 of the first transfer gear train 140, and the third gear 132 meshes with the gear 144 of the first transfer gear train 140 to receive the power P0. The fourth gear 134 is also a composite gear, and includes a second drive gear 134a and a second driven gear 134b. The second driven gear 134b is coupled to the second gear 124. The second gear 124 meshes with the gear 152 of the second transmission gear train 150, and the second driven gear 134b meshes with the gear 154 of the second transmission gear train 150 to receive power from the second gear 124. The second driving gear 134a is connected to the power output component 160 for selectively outputting the power having the first rotational speed V1 or the power having the second rotational speed V2.

In the present embodiment, the first rotational speed V1 is smaller than the second rotational speed V2, and therefore the outer peripheral gear number of the first drive gear 122a is smaller than the outer peripheral gear number of the second gear 124. The number of teeth on the outer edge of the second driven gear 134b is smaller than the number of teeth on the outer edge of the third gear 132. However, the present invention is not limited thereto, and the result of the first rotation speed V1 being smaller than the second rotation speed V2 may be achieved by using different gear size combinations, gear train sorting, and the like. In another embodiment, the first rotational speed V1 is greater than the second rotational speed V2, but the manner in which the transmission system switches the rotational speed is the same as that of the present embodiment, and will not be described in detail herein.

Figure 4 shows an exploded view of the first clutch of Figure 2. In the present embodiment, the first clutch 126 includes a drive dial 126a and a driven dial 126b. The driving turntable 126a is fixed on the first rotating speed switching transmission shaft 120, and the driven rotating disk 126b is combined with the second gear 124. The driven rotating disk 126b can be coupled or separately disposed on one side of the driving rotating plate 126a. The first clutch 126 is coupled to or separated from the driven dial 126b by a solenoid switch control drive dial 126a. However, in addition to the electromagnetic coil, the effect of coupling or separating the drive dial 126a and the driven turntable 126b can be achieved by the expansion and contraction of the molars or the change of the oil pressure and the air pressure. When the drive dial 126a is coupled to the driven dial 126b, the rotation of the first gear 122 will cause the second gear 124 to pivot. When the drive dial 126a is separated from the driven dial 126b, the second gear 124 is not affected by the rotation of the first gear 122 and remains stationary. The second clutch 136 is also the same as described above.

The external component 170 may be a rotating shaft that drives the optical machine or the roller to operate inside the scanner, or a sample storage tray of the detector, a turntable of the centrifuge, or a steel knife of the fruit and vegetable machine. The creation of the switchable speed transmission system can be switched to a power output of different speeds when the motor maintains a certain speed to cope with the use of these external components. The transmission system of the present invention is also simple in structure, and the effect of switching the speed can be achieved by using only two clutches.

Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any person having ordinary knowledge in the art can make some changes without departing from the spirit and scope of the present invention. Retouching, therefore, the scope of protection of this creation is subject to the definition of the scope of the patent application attached.

100‧‧‧Switchable speed drive system

102‧‧‧Land

110‧‧‧Motor

112‧‧‧ input shaft

120‧‧‧First speed switching drive shaft

122‧‧‧First gear

122a‧‧‧First drive gear

122b‧‧‧First driven gear

124‧‧‧second gear

126‧‧‧First clutch

126a‧‧‧ drive carousel

126b‧‧‧ Driven turntable

130‧‧‧Second speed switching drive shaft

132‧‧‧ Third gear

134‧‧‧fourth gear

134a‧‧‧Second drive gear

134b‧‧‧Second driven gear

136‧‧‧second clutch

140‧‧‧First transmission gear train

142, 144‧‧‧ gears of the first transmission gear train

150‧‧‧Second transmission gear train

152, 154‧‧‧ Gears of the second transmission gear train

160‧‧‧Power output components

170‧‧‧External components

1 is a perspective view of a preferred embodiment in accordance with the present teachings.

2 is another perspective view of a preferred embodiment in accordance with the present teachings.

3 is a schematic diagram of speed switching according to a preferred embodiment of the present invention.

Figure 4 shows an exploded view of the first clutch of Figure 1.

100‧‧‧Switchable speed drive system

110‧‧‧Motor

112‧‧‧ input shaft

120‧‧‧First speed switching drive shaft

122‧‧‧First gear

124‧‧‧second gear

126‧‧‧First clutch

130‧‧‧Second speed switching drive shaft

132‧‧‧ Third gear

134‧‧‧fourth gear

136‧‧‧second clutch

140‧‧‧First transmission gear train

150‧‧‧First transmission gear train

160‧‧‧Power output components

170‧‧‧External components

Claims (11)

A switchable speed transmission system includes: a motor having an input shaft for transmitting a power generated by the motor at a specific rotational speed; a first rotational speed switching drive shaft; and a first gear mounted to the first The speed is switched on the drive shaft and connected to the input shaft to receive the power to drive the first speed to switch the transmission shaft; a second gear is sleeved on the first speed switching transmission shaft; a first clutch is mounted on The first speed is switched on the transmission shaft, the first clutch selectively engages the second gear and the first speed to switch the transmission shaft, so that the second gear is driven by the first speed switching transmission shaft; and a second speed switching a third shaft gear, disposed on the second speed switching transmission shaft, and receiving the power from the first gear; a second clutch mounted on the second speed switching transmission shaft, and selectively Engaging the third gear and the second rotational speed to switch the drive shaft, so that the second rotational speed switching drive shaft is driven by the third gear; a fourth gear is sleeved on the second rotational speed switching drive shaft Connecting to the second gear, wherein the fourth gear is selectively driven by the second speed-switching transmission shaft via the second clutch, or driven by the second gear; and a power output The component is driven by the fourth gear to output power having a first rotational speed or a second rotational speed to an external component. The transmission system of claim 1, wherein the first clutch releases the second gear when the power having the first rotational speed is output, the second clutch engages the third gear; and is at the output When the power of the second rotational speed is present, the first clutch engages the second gear, and the second clutch releases the third gear. The transmission system of claim 2, wherein the transmission system drives the first gear, the third gear, the fourth gear, and the power output component by the input shaft at the specific rotational speed to output Having the first rotational speed; and the transmission system drives the first gear, the second gear, the fourth gear, and the power output member by the input shaft at the specific rotational speed to output the second rotational speed The power. The transmission system of claim 1, wherein the first gear train is a composite gear, and includes a first drive gear and a first driven gear, the first drive gear is used to drive the third gear . The transmission system of claim 4, wherein the number of teeth of the outer edge of the first drive gear is smaller than the number of teeth of the outer edge of the second gear. The transmission system of claim 4, wherein the fourth gear is a composite gear, comprising a second drive gear and a second driven gear, the second driven gear being coupled to the second gear. The transmission system of claim 6, wherein the number of teeth of the outer edge of the second driven gear is smaller than the number of teeth of the outer edge of the third gear. The transmission system of claim 1, further comprising a first transmission gear train engaging the first gear and the third gear, and a second transmission gear system engaging the second gear and the fourth gear . The transmission system of claim 1, wherein the first speed switching transmission shaft and the second speed switching transmission shaft are disposed in parallel with each other. The transmission system of claim 1, wherein the first clutch includes a driving turntable and a driven turntable, and the driving turntable is fixed on the first rotating speed transmission shaft, the driven turntable and the The second gear combination can be coupled or separately disposed on one side of the drive dial. The transmission system of claim 10, wherein the first clutch is coupled to or separated from the driven dial by a solenoid switch.