TWM462313U - Actuator with position detection mechanism - Google Patents

Description

Actuator with position detection mechanism

The present invention relates to an actuator, and more particularly to an actuator having a position detecting mechanism.

It is quite common and common to apply an actuator (Actuator) to an electric bed, a treadmill, a wheelchair, etc., as an adjustment of the position of the position or the elevation angle; in the case of emergency treatment for the patient, it is fast The actuators of the release mechanism can quickly adjust and change the bed to win the most precious gold rescue time. The research of this creation is based on this innovation.

The conventional actuator mainly includes a main body, a transmission mechanism and a quick release mechanism. The main body comprises an electric motor and a worm protruding outward from the center of the electric motor, and the transmission mechanism comprises a lead screw and a sleeve. a worm wheel at one end of the screw and meshing with the worm, the quick release mechanism comprises a two-cylinder coupling member, wherein one of the cylindrical coupling members is fixed to the lead screw and follows the rotation, and the other cylindrical coupling member is fixed to the worm wheel and follows the rotation. Torque transmission elements are provided at corresponding ends of the respective cylindrical coupling members, and the lead screw and the worm wheel are driven or disengaged together by the clutch between the respective cylindrical coupling members.

However, the conventional actuator still has the following problems in practical use. Due to its complicated structure and various components, not only the assembly is not easy, but also the cost of materials and processing of the components is not expensive. Oh, thus greatly reducing its usability. In addition, the positions of the respective torque transmitting components of the respective cylindrical coupling members are not detected at the time of the clutching, so that the alignment of the torque transmitting components is often inaccurate when the next fitting is performed. In order to make the torque transmission components unable to be embedded for transmission, and extremely inconvenient in use and operation.

One of the objects of the present invention is to provide an actuator having a position detecting mechanism which can be precisely controlled by the position detecting mechanism at a position where the worm wheel member and the clutch wheel are released or engaged.

In order to achieve the above object, the present invention provides an actuator having a position detecting mechanism, comprising a main body, a transmission mechanism, a quick release mechanism and a position detecting mechanism, the transmission mechanism being mounted on the main body, the transmission The mechanism comprises a worm gear member and a lead screw passing through the worm wheel member, the worm wheel member has a plurality of convex keys; the quick release mechanism is sleeved on the lead screw and located at one side of the worm gear member, and the quick release mechanism comprises a clutch wheel, the clutch wheel and the worm wheel member are axially displaceable to each other, the clutch wheel is provided with a plurality of key grooves for each of the male keys to be engaged or disengaged; the position detecting mechanism comprises a variable resistor and a driving a wheel and a driven wheel, the driving wheel is sleeved on the lead screw and follows the rotation, the driven wheel is connected to the variable resistor and meshed with the driving wheel; wherein when the worm wheel member and the clutch wheel are released and released, The variable resistor forms a specific resistance value.

In order to achieve the above object, the present invention provides another actuator having a position detecting mechanism, including a main body, a transmission mechanism, a quick release mechanism and a position detecting mechanism, the transmission mechanism being mounted on the main body, The transmission mechanism includes a worm gear member and a lead screw penetrating the worm wheel member, the worm wheel member has a plurality of convex keys; the quick release mechanism is sleeved on the lead screw and located at one side of the worm gear member, the quick release mechanism The utility model comprises a clutch wheel, wherein the clutch wheel and the worm wheel member are axially displaceable relative to each other, and the clutch wheel is provided with a plurality of key grooves for each of the convex keys to be engaged or disengaged; the position detecting mechanism comprises a variable resistor, The variable resistor has a rotating shaft that is driven to rotate by the lead screw; wherein when the worm wheel member and the clutch wheel are released from the rotation, the rotation of the rotating shaft is transmitted to form a specific resistance value at the variable resistor.

This creation also has the following effects, which can greatly reduce the cost due to the reduction of components used. The specific resistance value generated by the rotation of the rotating shaft of the variable resistor is driven by the driving screw of the lead screw, so that the convex keys of the worm wheel member can be accurately integrated into the key grooves of the clutch wheel, so that the conventional technology can be effectively overcome. Embedding or being inaccurate. By the setting of the position detecting mechanism, the ease of operation of the actuator and the convenience of use can be improved.

10‧‧‧ Subject
11‧‧‧Base
12‧‧‧ lower case
13‧‧‧Upper housing
14‧‧‧ cavity
15‧‧‧Electric motor
16‧‧‧Motor parts
161‧‧‧ worm
17‧‧‧Shell
20‧‧‧Transmission mechanism
21‧‧‧ worm gear components
211‧‧‧ convex keys
22‧‧‧ lead screw
221‧‧‧First positioning segment
222‧‧‧Second positioning section
23‧‧‧ Bearing
24‧‧‧ telescopic tube
241‧‧‧ Nuts
30‧‧‧Quick release agency
31‧‧‧Fixed wheel
311‧‧‧Positioning holes
312‧‧‧stop button
32‧‧‧Clutch wheel
321‧‧‧ keyway
322‧‧ ‧ retaining ring
323‧‧‧ trench
33‧‧‧Flexible components
34‧‧‧Turn-over assembly
35‧‧‧ Cover
36‧‧‧Rotating parts
361‧‧‧Driving arm
37‧‧‧ lever
371‧‧‧ hook
40‧‧‧Location detection agency
41‧‧‧Variable resistor
411‧‧‧ shaft
42‧‧‧ drive wheel
43‧‧‧ driven wheel
50‧‧‧External management
60‧‧‧ rear support

The first figure is a combined schematic diagram of the present actuator.
The second picture is a three-dimensional exploded view of the various institutions of the creation.
The third figure is an exploded view of the worm gear member, quick release mechanism and detection mechanism of the present invention.
The fourth figure is an exploded perspective view of the main assembly and the transmission mechanism.
The fifth figure is a combined cross-sectional view of the present actuator.
The sixth figure is a three-dimensional appearance of the flipping assembly of the present invention before it is actuated.
The seventh figure is a stereoscopic appearance of the flipping assembly of the present creation.
The eighth figure is a cross-sectional view of the seventh figure.

The detailed description and technical content of the present invention are described below with reference to the drawings, but the drawings are only for reference and explanation, and are not intended to limit the creation.

Referring to the first to fifth figures, the present invention provides an actuator having a position detecting mechanism, which mainly includes a main body 10, a transmission mechanism 20, a quick release mechanism 30, and a position detecting mechanism 40.

The main body 10 includes a base 11 and an electric motor 15. The base 11 has a lower housing 12 and an upper housing 13 corresponding to the lower housing 12, and the housings 12 and 13 are substantially semi-cylindrical. A hollow cavity 14 is formed between the upper housing 13 and the lower housing 12, and the upper housing 13 and the lower housing 12 are screwed through a screwing member such as a screw, and the lower housing 12 and the upper housing The outer portion of the 13 is formed with a pair of studs corresponding to each other.

The motor 15 includes a motor component 16 and a housing 17 (shown in the fourth figure) housed in the power supply unit 16 . The center position of the motor component 16 protrudes from a worm 161 when the housing 17 abuts the base 11 The worm 161 is inserted into the interior of the cavity 14 of the base 10.

The transmission mechanism 20 includes a worm gear member 21, a lead screw 22, and a bearing 23 (shown in the second figure). The worm wheel member 21 is formed with a plurality of convex keys 211 at one end toward the quick release mechanism 30. The bearing 23 is received and fixed in the cavity 14 of the base 11. One end of the lead screw 22 is disposed in the worm wheel member 21 and supported by the base 11 through the bearing 23. The lead screw 22 has a first positioning section 221 and a The second positioning section 222.

The transmission mechanism 20 further includes a telescopic tube 24 (shown in the fourth figure). The telescopic tube 24 has a nut 241 for screwing the lead screw 22 to each other. The lead screw 22 is a non-self-locking guide. The screw, i.e., when the nut 241 is subjected to axial thrust or pressure, will cause the lead screw 22 to freely rotate.

The quick release mechanism 30 is sleeved on the lead screw 22 and formed on one side of the worm gear member 21. The quick release mechanism 30 includes a fixed wheel 31 and a clutch wheel 32 that is sleeved on the fixed wheel 31 (as shown in the third figure). The fixing wheel 31 and the clutch wheel 32 are substantially in the shape of a cylinder. The fixing wheel 31 has a positioning hole 311. The fixing wheel 31 is sleeved and fixed at the first positioning section 221 of the lead screw 22 so that the fixing wheel 31 is fixed. Rotate with each other. The inner wall of the clutch wheel 32 is provided with a plurality of key grooves 321 for selectively fitting the respective male keys 216. Further, a plurality of rotation stop keys 312 are disposed around the outer circumferential surface of the fixed wheel 31, and a plurality of slots 323 for fitting the aforementioned rotation stop keys 312 are provided on the inner wall of the clutch wheel 32. The clutch wheels 32 are movable relative to the fixed wheel 31 and the worm gear member. 21 is axially displaced, and a retaining ring 322 is formed at the end of the clutch wheel 32 away from the fixed wheel 31. Further, the fixed wheel 31 may be replaced by the clutch wheel 32. When the worm wheel member 21 is pushed and displaced along the lead screw 22, the worm wheel member 21 and the fixed wheel 31 are released from release (not shown).

The quick release mechanism 30 further includes a resilient member 33 and a toggle assembly 34. The elastic member 33 of the present embodiment is a helical compression spring that is sleeved on the periphery of the lead screw 22 and elastically clamped to the worm gear member 21 and clutched. Between wheels 32. The swinging assembly 34 includes a cover 35, a rotating member 36 and a pull rod 37 (as shown in the fourth figure). The cover 35 is coupled to the outer casing 17 and covers the base 11 and the rotating member 36. The slewing member 36 is pivotally connected to the studs of the housings 12 and 13 through bolts and the like, and a pair of dialing arms 361 extend inwardly at the open end of the rotating member 36. The dial arm 361 is disposed corresponding to the retaining ring 322 of the clutch wheel 32 described above. The pull rod 37 passes through the cover 35 and a part of the inside of the cover 35 is exposed to the outside of the cover 35, and the pull rod 37 is axially movable relative to the cover 35. One end of the pull rod 37 has a hook portion 371. This hook portion 371 is a closed end connection corresponding to the rotary member 36.

The position detecting mechanism 40 of the present embodiment includes a variable resistor 41 (VR), a driving wheel 42 and a driven wheel 43. The variable resistor 41 can also be called a potentiometer (Pot), which has A rotation axis 411 has a linear relationship with the rotation angle of the rotation shaft 411. That is, the rotation shaft 411 can obtain a corresponding resistance value every rotation angle, and the driving wheel 42 is sleeved on the second positioning portion 222 of the lead screw 22. (As shown in the second figure), the driven wheel 43 is coupled to the rotating shaft 411 of the variable resistor 41 for synchronous rotation, and the driven wheel 43 and the driving wheel 42 are meshed with each other. By the combination of the foregoing elements, when the lead screw 22 is driven by the worm 161 to drive the worm wheel member 21, the clutch wheel 32 and the fixed wheel 31 to rotate together, the drive wheel 42 is simultaneously driven to rotate, and the drive wheel 42 drives the driven wheel 43 to rotate. And by the common rotation of the driven wheel 43 and the rotating shaft 411, various different resistance values are obtained on the variable resistor 41.

The actuator of the present invention further includes an outer tube 50 and a rear support 60, wherein the outer tube 50 is sleeved on the outer circumference of the telescopic tube 24, and one end thereof is fixed to the end of the outer casing 17 and the cover 35, and is utilized. The fitting of the guide rail and the groove allows the telescopic tube 24 to move linearly with respect to the outer tube 50 only. The rear support 60 is spliced and fixed to one end of the base 11 away from the outer tube 50, and a portion of the area is convexly exposed to expose the outer casing 17 and the other end of the cover 35.

Referring to the sixth to eighth figures, the sixth figure is a three-dimensional external view before the tie rod 37 is not activated, and the seventh figure is a three-dimensional external view after the tie rod 37 is actuated, and the pull rod 37 is pulled in the direction away from the rear support 60 when in use. Moving, the hook portion 371 of the pull rod 37 will drive the rotating member 36 to rotate, and the rotating member 36 is pivotally connected to each stud of each of the housings 12, 13 as a center of rotation, so that the dialing arm 361 pushes the clutch wheel 32. The retaining ring 322 moves the clutch wheel 32 toward the worm gear member 21, and the respective key 321 of the worm wheel member 21 and the key grooves 321 of the clutch wheel 32 are released from the torque transmission (as shown in FIG. 8). 161 and the lead screw 22 will not continue to drive. When the lead screw 22 does not rotate, the driving wheel 42 will no longer drive the driven wheel 43 and the rotating shaft 411 of the variable resistor 41 to rotate, and the variable resistor 41 is electrically connected. a control device (not shown). When the control device releases the worm wheel member 21 and the clutch wheel 32, the angle of rotation of the rotating shaft 411 and the specific resistance value obtained by the variable resistor 41 are loaded into the memory of the control device. in. With this specific resistance, it is possible to obtain the fitting position or release position of each of the convex keys 211 of the worm wheel member 21 and the key grooves 321 of the clutch wheel 32, and it is possible to prevent loss or error.

In summary, the actuator with position detection mechanism of this creation can achieve the intended purpose of use, and solve the lack of knowledge, and because of its novelty and progress, it fully meets the requirements of new patent applications. To file an application in accordance with the Patent Law, please check and grant the patent in this case to protect the rights of the creator.

11‧‧‧Base

12‧‧‧ lower case

13‧‧‧Upper housing

14‧‧‧ cavity

20‧‧‧Transmission mechanism

21‧‧‧ worm gear components

211‧‧‧ convex keys

22‧‧‧ lead screw

221‧‧‧First positioning section

222‧‧‧Second positioning section

23‧‧‧ Bearing

30‧‧‧Quick release agency

31‧‧‧Fixed wheel

311‧‧‧Positioning holes

312‧‧‧stop button

32‧‧‧Clutch wheel

321‧‧‧ keyway

322‧‧ ‧ retaining ring

323‧‧‧ trench

33‧‧‧Flexible components

40‧‧‧Location detection agency

41‧‧‧Variable resistor

42‧‧‧ drive wheel

43‧‧‧ driven wheel

60‧‧‧ rear support

Claims (10)

An actuator having a position detecting mechanism, comprising:
a subject;
a transmission mechanism is mounted on the main body, the transmission mechanism includes a worm gear member and a lead screw passing through the worm gear member, the worm gear member having a plurality of convex keys;
a quick release mechanism is disposed on the lead screw and located at one side of the worm gear member, the quick release mechanism includes a clutch wheel, and the clutch wheel and the worm wheel member are axially displaceable from each other, and the clutch wheel is provided for each The protruding key is coupled to the plurality of keyways of the transmission or the transmission; and a position detecting mechanism comprises a variable resistor, a driving wheel and a driven wheel, the driving wheel is sleeved on the guiding screw and follows the rotation, the driven wheel Connecting the variable resistor and engaging the drive wheel to transmit the transmission;
Wherein the varistor member and the clutch wheel are released from each other, a specific resistance value is formed at the variable resistor. An actuator having a position detecting mechanism according to claim 1, wherein the lead screw has a first positioning section, and the quick release mechanism further comprises a fixed wheel fixed to the first positioning section, the fixed wheel The clutch wheels are threaded and are axially movable relative to each other. An actuator having a position detecting mechanism according to claim 2, wherein the lead screw further has a second positioning section, the driving wheel is sleeved in the second positioning section, and the variable resistor has a rotating shaft, The driven wheel is coupled to the rotating shaft and rotates in synchronization. An actuator having a position detecting mechanism according to claim 3, wherein a change in resistance value of the variable resistor is linear with a rotation angle of the rotating shaft. An actuator having a position detecting mechanism according to claim 1, wherein the quick release mechanism further comprises an elastic member sleeved on a periphery of the lead screw and elastically sandwiched between the worm wheel member and the clutch Between the rounds. An actuator having a position detecting mechanism according to claim 5, wherein the quick release mechanism further comprises a turning assembly comprising a cover, a rotating member and a pull rod, the cover cover Covering the main body, the rotating member has a U-shape and is pivotally connected to the main body, the pull rod is connected to the cover and has a hook portion, and the hook portion is connected to the closed end of the rotating member, the rotation The open end of the member extends inwardly with a pair of toggle arms that are displaced corresponding to the clutch wheel. An actuator having a position detecting mechanism, comprising:
a subject;
a transmission mechanism is mounted on the main body, the transmission mechanism includes a worm gear member and a lead screw passing through the worm gear member, the worm gear member having a plurality of convex keys;
a quick release mechanism is disposed on the lead screw and located at one side of the worm gear member, the quick release mechanism includes a clutch wheel, and the clutch wheel and the worm wheel member are axially displaceable from each other, and the clutch wheel is provided for each The male key is coupled to the plurality of keyways of the transmission or the transmission; and a position detecting mechanism includes a variable resistor having a rotating shaft driven by the lead screw to rotate;
When the worm gear member and the clutch wheel are released from the rotation, the rotation of the rotating shaft is transmitted to form a specific resistance value at the variable resistor. An actuator having a position detecting mechanism according to claim 7, wherein a change in resistance value of the variable resistor is linear with a rotation angle of the rotating shaft. An actuator having a position detecting mechanism according to claim 7, wherein the quick release mechanism further comprises an elastic member sleeved on a periphery of the lead screw and elastically sandwiched between the worm wheel member and the clutch Between the rounds. The actuator having a position detecting mechanism according to claim 9, wherein the quick release mechanism further comprises a turning assembly comprising a cover, a rotating member and a pull rod, the cover cover Covering the main body, the rotating member is in a U-shape and pivotally connected to the main body, the pull rod is connected to the cover and has a hook portion, and the hook portion is connected to the closed end of the rotating member, the rotating member The open end extends inwardly with a pair of toggle arms that are displaced corresponding to the clutch wheel.