WO2022062975A1

WO2022062975A1 - Lateral-push type motor transmission mechanism

Info

Publication number: WO2022062975A1
Application number: PCT/CN2021/118349
Authority: WO
Inventors: 马戎
Original assignee: 深圳市巡域科技有限公司
Priority date: 2020-09-22
Filing date: 2021-09-14
Publication date: 2022-03-31
Also published as: WO2022062473A1; CN213711781U

Abstract

A lateral-push type motor transmission mechanism (10) comprising a housing (100), a slide limiting assembly (200), and a direction-changing device (300). The housing contains a power source (110), a motor (120) electrically connected to the power supply, and an electronic control board (130) respectively electrically connected to the power source and the motor. A center portion of the housing is provided with a deceleration device (140) which has an output end passing through the top of the housing, and which is connected to an output shaft of the motor. The slide limiting assembly comprises two slide rails (210) that extend in the length direction of the housing and are fixed on two sides of the housing, a main sliding block (220) that slidably cooperates with each of the two slide rails, and a movement support frame (230) that is mounted on the top of the main sliding block and on which is mounted an external actuating device. The direction-changing device comprises a crankshaft (310) that rotates synchronously with the output end of the deceleration device and a connecting rod (320) respectively connected to the crankshaft and the main sliding block. When the motor is operating, the deceleration device drives the crankshaft to rotate, and pulls or pushes the main sliding block by means of the connecting rod, so that the main sliding block drives the movement support to slide along the slide rails. The lateral-push type motor transmission mechanism has the advantages of high power transmission efficiency, low transmission resistance, and being easy to hold.

Description

A side push type motor transmission mechanism

technical field

The invention relates to the technical field of motor transmission devices, in particular to a side-push type motor transmission mechanism with high power transmission efficiency, low transmission resistance and easy to hold.

Background technique

Products with telescopic motion output function (such as body massagers, fascia guns, electric cleaning brushes, etc.) include a telescopic power structure composed of power supply and transmission mechanisms such as motors, deceleration devices, and reversing devices. The synergistic action of each component realizes the telescopic and push-pull functions required for product work. The telescopic end of the telescopic power structure is often connected with an actuating device that acts on the product object (such as human body, sanitary ware, etc.). The actuating device can be fascia. The spherical rubber-coated gun head of the gun can also be the brush head of an electric cleaning brush. By replacing different types of actuating devices, the use of the telescopic power structure in different fields and scenarios can be realized, so as to meet the different needs of users.

At present, the above-mentioned telescopic power structure and the actuating device usually adopt a linear arrangement, that is, the telescopic path of the telescopic power structure and the motion path of the actuating device are located on the same straight line or approximately on the same straight line. The size of the product in the length direction is relatively large, which causes the power transmitted from the telescopic power structure to the actuating device to drop, reducing the power transmission efficiency; in addition, when the above-mentioned linear arrangement is adopted, during the power transmission process, the vertical telescopic power There will be a certain resistance in the direction of the structure telescopic path and the movement path of the actuating device, which further affects the efficiency of power transmission; in addition, the center of gravity of the product is far away from the actuating device, especially the motor in the telescopic power structure or the battery used for power supply When the weight is large, a lever effect will be generated at the actuating device during the working process of the telescopic power structure. The user needs to use a large wrist force to overcome the torque of the lever effect, which will easily cause the user's wrist fatigue and affect the user's experience.

technical problem

Based on this, it is necessary to provide a side pusher with high power transmission efficiency, low transmission resistance and easy to hold to solve the problem of low power transmission efficiency, large transmission resistance and wrist fatigue caused by the need to overcome a large torque to hold the product. Type motor drive mechanism.

technical solutions

A side-push type motor transmission mechanism, the side-push type motor transmission mechanism comprises:

a housing, the inner cavity of the housing accommodates a power supply, a motor electrically connected to the power supply, and an electric control board that is electrically connected to the power supply and the motor to control the operation of the motor, the middle of the inner cavity of the housing is provided with a reduction gear connected to the output shaft of the motor, and the output end of the reduction gear passes through the top of the casing;

The sliding limit assembly includes two sliding rails extending along the length direction of the casing and respectively fixed on both sides of the casing, a main sliding block slidably matched with the two sliding rails respectively, and a main sliding block installed on the main sliding rail. The top of the slide and the motion bracket for mounting the external actuation device; and

a reversing device, comprising a crankshaft that rotates synchronously with the output end of the reduction gear, and a connecting rod that is rotatably connected to the crankshaft and the main slider respectively;

When the motor works, the speed reduction device drives the crankshaft to rotate, and pulls or pushes the main slider through the connecting rod, so that the main slider drives the moving bracket to slide along the slide rail.

In one of the embodiments, the deceleration device includes a worm drivingly connected with the motor output shaft and a gear meshing with the worm.

In one of the embodiments, the output shaft of the motor is perpendicular or parallel to the output shaft of the gear.

In one embodiment, the sliding limit assembly further includes an auxiliary sliding block sleeved on the sliding rail and fixedly connected with the moving bracket, and the auxiliary sliding block is driven by the lower edge of the moving bracket. The slide rail slides.

In one of the embodiments, a pair of guide holes extending in the length direction of the casing are opened parallel to the top of the casing, and the top of the main slider and the top of the auxiliary slider are respectively protruded to form a latch, The plug penetrates the guide hole and is fixedly connected with the moving bracket.

In one embodiment, limit stops are respectively provided on both ends of the slide rail on the housing.

In one embodiment, an MCU chip is provided on the electronic control board, and the side-push motor transmission mechanism further includes a power compensation detection component, and the dynamic compensation detection component includes a power detection unit electrically connected to the MCU chip and A rotation speed detection unit, the MCU chip receives and analyzes the detection values sent by the power detection unit and the rotation speed detection unit to calculate motor compensation parameters, and adjust the output voltage of the motor according to the motor compensation parameters.

In one embodiment, the electronic control board is further provided with a driving MOS transistor electrically connected to the signal output end of the MCU chip, and the power detection unit is a sampling resistor connected in series with the driving MOS transistor.

In one embodiment, the rotational speed detection unit is a photoelectric encoder arranged at the output end of the motor or the reduction gear.

In one of the embodiments, the rotational speed detection unit includes a pointer member fixedly installed at the bottom of the gear of the reduction gear, the end of the pointer member is provided with a magnetic member, the electric control board is located below the pointer member, and The electronic control board is provided with a Hall sensor electrically connected to the MCU chip and used for detecting the magnetic field strength.

beneficial effect

The side-push type motor transmission mechanism of the present invention is implemented, and the motor and the deceleration device for driving the sliding of the moving bracket are arranged at the bottom of the moving bracket, that is, the side-push type or parallel layout is adopted, which reduces the length and dimension of the product. The distance between the center of gravity and the actuating device set on the motion bracket is small, thereby reducing the moment caused by the lever effect and the resistance value generated in the sliding direction of the vertical motion bracket, improving the power transmission efficiency and improving the product quality. The energy consumption ratio enables the product to obtain greater power output or less power consumption, which improves the reliability of the product; in addition, it also reduces the impact on the user's wrist when the user is holding the product. In addition, the side-push or side-by-side layout makes the product structure more compact, reduces the amount of structural parts, reduces product processing costs and facilitates Design the shape of the product.

Description of drawings

1 is a schematic structural diagram of a side-push motor transmission mechanism in an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the side-push motor transmission mechanism after removing the casing in the embodiment shown in FIG. 1;

3 is a schematic cross-sectional structural diagram of a side-push motor transmission mechanism in an embodiment of the present invention;

4 is a schematic diagram of a partial structure of a side-push motor transmission mechanism after a transmission device is loaded in an embodiment of the present invention;

5 is a block diagram of a side-push motor transmission mechanism in an embodiment of the present invention;

FIG. 6 is a schematic diagram of a sampling circuit of a side-push motor transmission mechanism in an embodiment of the present invention.

Embodiments of the present invention

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

Please refer to FIG. 1 , FIG. 2 and FIG. 4 , the present invention discloses a side-push type motor transmission mechanism 10 with high power transmission efficiency, low transmission resistance and easy to hold. The side-push type motor transmission mechanism 10 is used to provide The driving part of the power and the receiving part for receiving the actuating device 240 are parallel to each other, that is, a parallel structure is adopted. The driving part provides power from the side of the receiving part, which shortens the overall length of the product. Similarly, The power transmission path is also shortened, the power loss in the transmission process is reduced, and the transmission efficiency is improved. In addition, with the reduction of the length of the product, the force arm from the center of gravity of the driving part to the receiving part is shortened, thereby weakening the leverage effect between the two and reducing the non-sliding direction of the receiving part during the sliding process of the receiving part. resistance, further reducing power loss. The weakening of the leverage effect also reduces the wrist strength required by the user to reduce the shaking of the product when holding the product, and the user can easily hold the product, which is beneficial to improve the user's experience.

Specifically, the side-push motor transmission mechanism 10 includes a housing 100, a sliding limit assembly 200 and a reversing device 300. The housing 100 is used to support the sliding limiting assembly 200 and the reversing device 300, and is used during the use of the product. , a grip is provided. The inner cavity of the housing 100 accommodates a power supply 110, a motor 120 electrically connected to the power supply 110, and an electronic control board 130 electrically connected to the power supply 110 and the motor 120 to control the operation of the motor 120, respectively. The output shaft of the motor 120 is connected to the reduction gear 140 , and the output end of the reduction gear 140 penetrates the top of the housing 100 and is matched with the commutation device 300 . In this embodiment, the power source 110 is an ordinary dry battery or a rechargeable battery, a battery slot is provided in the casing 100, and a battery cover that can open and close the battery slot is arranged at the bottom of the casing 100; the motor 120 adopts a forward and reverse rotation. Servo motor, in this way, when the motor 120 rotates forward for a predetermined number of times, it rotates reversely, so that the external actuating device 240 reciprocates relative to the casing 100 to meet the needs of the user. The sliding limit assembly 200 includes two sliding rails 210 extending along the length direction of the casing 100 and respectively fixed on both sides of the casing 100 , a main sliding block 220 slidably matched with the two sliding rails 210 respectively, and a main sliding block 220 installed on the main sliding block. The top of the block 220 is used to install the movement bracket 230 of the external actuating device 240; the reversing device 300 includes a crankshaft 310 that rotates synchronously with the output end of the reduction gear 140 and a connecting rod 320 that is rotatably connected to the crankshaft 310 and the main slider 220 respectively. When the motor 120 is working, the deceleration device 140 drives the crankshaft 310 to rotate, and pulls or pushes the main slider 220 through the connecting rod 320, so that the main slider 220 drives the moving bracket 230 to slide along the slide rail 210.

It should be noted that, in this embodiment, two sliding rails 210 are arranged on both sides of the casing 100 in the longitudinal direction of the casing 100, so that the mating area between the main slider 220 and the casing 100 is increased. When the 220 is slidably installed on the two slide rails 210 and receives the moving bracket 230, the main slider 220 and the moving bracket 230 are evenly stressed, and the actuating device 240 on the moving bracket 230 is not easy to shake, which ensures the stable sliding of the actuating device 240. sex. Further, the sliding limit assembly 200 further includes an auxiliary sliding block 250 sleeved on the sliding rail 210 and fixedly connected with the moving bracket 230 . It can also be understood that the main slider 220 and the auxiliary slider 250 are jointly used to support the moving bracket 230, so that the force of the moving bracket 230 is more uniform, and it is avoided that when only the main slider 220 is used to support the moving bracket 230, on the moving bracket 230 One end or one side away from the main slider 220 swings relative to the position of the connection between the main slider 220 and the moving bracket 230 , so as to ensure the reliability of the sliding operation of the moving bracket 230 and reduce the friction perpendicular to the sliding direction of the moving bracket 230 . resistance, thereby reducing kinetic energy losses.

The casing 100 is used to encapsulate and protect the power supply 110 , the motor 120 and the electric control board 130 . Please refer to FIG. 2 and FIG. 3 , in one embodiment, a pair of guide holes 150 extending in the longitudinal direction of the housing 100 are formed parallel to the top of the housing 100 , and the top of the main slider 220 and the top of the auxiliary slider 250 are respectively convex The pin 221 is formed through the guide hole 150 and is fixedly connected with the motion bracket 230. For example, insert the screw through the motion bracket 230 into the pin 221, and then tighten the screw to fix the motion bracket 230 on the main slide. Block 220 and auxiliary slider 250 on purpose. In this embodiment, by opening a guide hole 150 on the top of the housing 100 , the guide hole 150 provides a connection channel between the moving bracket 230 and the main slider 220 and the auxiliary slider 250 on the one hand, and on the other hand, the guide hole 150 The sliding path of the moving bracket 230 is also limited. Specifically, the edge of the guide hole 150 restricts the pin 221 to prevent the pin 221 from shaking in the guide hole 150 , thereby achieving the purpose of limiting the sliding path of the moving bracket 230 .

Further, the housing 100 includes a tile-shaped lower cover 160 and an upper cover 170 , which is disposed on the lower cover 160 and has a guide hole 150 . The opening edge of the top of the lower cover 160 is provided with a slot, and the slot is along the lower cover 160 . The upper cover 170 is inserted into the card slot and snap-fitted with the lower cover 160 . Of course, the upper cover 170 and the lower cover 160 may also be screwed together, and the detachable connection between the upper cover 170 and the lower cover 160 facilitates disassembly and assembly of various components in the housing 100 . In one embodiment, a top cover 400 is also installed on the top of the upper cover 170 , and a through hole 410 is formed on the top cover 400 on one side corresponding to the sliding direction of the moving bracket 230 . The actuating end provides an active channel, and the casing 100 and the top cover 400 are used to encapsulate the various components of the side-push motor transmission mechanism 10, thereby realizing the protection of the various components. Preferably, the side of the top cover 400 away from the through hole is open. Similarly, the same side of the bottom cover 160 that is located at the opening of the top cover 400 is also open. The side push motor transmission mechanism 10 also includes an end cover 500. The cover 500 covers the opening of the top cover 400 and the opening of the lower cover 160 and abuts against the top cover 400 and the lower cover 160 respectively. In this embodiment, the casing 100 , the top cover 400 and the end cover 500 may be collectively referred to as By setting the end cover 500 in the outer casing, when the internal components of the side-push motor transmission mechanism 10 are damaged, only the end cover 500 can be opened to take out the damaged components or directly repair the damaged components, which reduces the difficulty of product maintenance.

It should be noted that, in this embodiment, the motor 120 and the power supply 110 are located on two sides of the deceleration device 140 respectively, and the electric control board 130 is installed at the bottom of the power supply 110 and is electrically connected to the motor 120 . The distance between the motors 120 avoids the influence of the heat generated by the motors 120 on the operation of the electronic control board 130 .

Referring to FIG. 3 , the reduction gear 140 includes a worm 141 that is drivingly connected to the motor output shaft and a gear 142 that meshes with the worm 141 . The central portion of the gear 142 is fixedly mounted with a transmission shaft 143 that cooperates with the crankshaft 310 , and the transmission shaft 143 is remote from the crankshaft. One end of the 310 is rotatably inserted on the plug-in board 144 fixedly connected with the lower cover 160 . In this embodiment, the reduction gear 140 may include only one gear 142 , or may include multiple gears 142 . When the reduction gear 140 includes a plurality of gears 142, the number of teeth of each gear 142 is different, and each gear 142 meshes with the worm 141 step by step. By setting the multi-stage gears 142, the transmission ratio of the reduction gear 140 can be adjusted, and then the moving bracket can be adjusted. 230 sliding speed to meet user needs. In this embodiment, the set reduction gear 140 includes three gears: a first gear C1, a second gear C2 and a third gear C3, wherein the first gear C1 meshes with the worm 141, and the second gear C2 meshes with the first gear C1. The third gear C3 meshes with the second gear C2, and the gear 142 farthest from the worm 141 is provided with a transmission shaft 143, that is, the third gear C3 in this embodiment is provided with a transmission shaft 143 matched with the crankshaft 310.

In one embodiment, the tooth pattern of the worm 141 may be a helical tooth pattern or a straight tooth pattern, and the tooth pattern of the gear 142 meshing with the worm screw 141 is adapted to the tooth pattern of the worm screw 141 . Further, the output shaft of the motor is perpendicular or parallel to the output shaft of the gear 142. In this embodiment, the output shaft of the gear 142 is the transmission shaft 143 described in the foregoing embodiments. When the output shaft of the motor is perpendicular to the output shaft of the gear 142, the motor 120 is arranged horizontally, that is, the output shaft of the motor 120 extends in the horizontal direction, and the tooth pattern of the worm 141 cooperates with the gear 142 during rotation to drive the gear 142 to rotate, thereby making the gear 142 rotate. The crankshaft 310 to which the transmission shaft 143 is connected rotates. When the output shaft of the motor is parallel to the output shaft of the gear 142 , the motor 120 is arranged longitudinally, that is, the output shaft of the motor 120 extends in the vertical direction, and a driving gear matched with the gear 142 is installed on the output shaft of the motor. Of course, when the moving bracket 230 needs a large sliding speed, the gear 142 and the worm 141 can also be omitted, and the crankshaft 310 is directly driven to rotate by the output shaft of the motor 120, which will not be repeated here.

The reversing device 300 is used to convert the rotation of the motor output shaft into linear motion. The crankshaft 310 fixed to the transmission shaft 143 drives the connecting rod 320 to perform linear telescopic or push-pull motion, thereby driving the moving bracket 230 to slide on the slide rail 210 . The crankshaft 310 and the connecting rod 320 are rotatably connected by means of bearings or pin holes. When the crankshaft 310 and the connecting rod 320 are rotated through bearings, since the crankshaft 310 is fixed on the transmission shaft 143, the crankshaft 310 will rotate synchronously with the transmission shaft 143 driven by the transmission shaft 143, and the crankshaft 310 is far from the transmission shaft 143. One end takes the length of the crankshaft 310 as the radius, and makes a circular motion of equal angular velocity around the end of the crankshaft 310 that cooperates with the transmission shaft 143; The end of the rod 320 away from the crankshaft 310 rotates relative to the connecting portion where the crankshaft 310 is connected. When the crankshaft 310 and the connecting rod 320 are matched through the pin holes, a guide groove is formed on the end of the crankshaft 310 that is matched with the connecting rod 320, so that the connecting rod 320 can slide in the guide groove through the pin, and the connecting rod 320 is away from the crankshaft 310. One end of the crankshaft 310 is still in rotational motion relative to the connecting portion where the crankshaft 310 is connected. The difference between the above two cases is that the distance between the connecting end of the connecting rod 320 and the crankshaft 310 in the former and the transmission shaft 143 is fixed, while the distance between the connecting end of the connecting rod 310 and the transmission shaft 143 is variable. This will not be repeated here.

In one embodiment, the housing 100 is provided with limiting stoppers 260 on both ends of the slide rail 210 , respectively. Preferably, the limiting block 260 is screwed to the upper cover 170 and covers the end of the slide rail 210 . By setting the limit stopper 260, the sliding range of the main slider 220 and the auxiliary slider 250 on the slide rail 210 is limited, and the one-way sliding distance of the moving bracket 230 is less than or equal to the distance between the two limit stopper 260 and the main block 260. The distance between the sliding block 220 and the auxiliary sliding block 250 is different to prevent the main sliding block 220 and the auxiliary sliding block 250 from falling off the sliding rail 210 , thereby ensuring the reliability of the sliding operation of the moving bracket 230 .

The actuating device 240 is mounted on the moving bracket 230, and is driven by the moving bracket 230 to reciprocate relative to the external acting object to realize the function of the product. The actuating device 240 may be a sanitary ware or a brush head for cleaning, or may be a massage device or the like. In this embodiment, the actuating device 240 is a massage head. Specifically, please refer to FIG. 4 , an installation ring 231 is fixedly arranged in the middle of the movement bracket 230 , an anti-slip rubber ring 232 is arranged on the inner surface of the installation ring 231 , and the massage head wears the anti-slip rubber ring 232 and is locked by the anti-slip rubber ring 232 , In order to realize the fixation of the massage head on the motion bracket 230 . Further, two opposite sides of the movement bracket 230 are warped laterally close to the center of the movement bracket 230, thereby forming an arc-shaped limit portion to adapt to the shape of the massage head.

In the motor drive system using the motor 120 and the reduction gear 140, in order to meet the requirement of adjustable output rate, the motor speed is usually adjusted by adjusting the motor power (voltage regulation or current regulation), thereby reducing or increasing the system output proportionally. In this process, the decrease of the motor speed will also lead to the decrease of the motor torque, which in turn causes the motion torque of the system output end to decrease proportionally, thereby affecting the working effect of the actuating device 240 .

Referring to FIG. 5 , in an embodiment, an MCU chip 131 is disposed on the electronic control board 130 , the side-push motor transmission mechanism 10 further includes a dynamic compensation detection component 600 , and the dynamic compensation detection component 600 includes a power that is electrically connected to the MCU chip 131 . The detection unit 700, the rotational speed detection unit 800, and the MCU chip 131 receive and analyze the detection values sent by the power detection unit 700 and the rotational speed detection unit 800 to calculate the compensation parameters of the motor 120, and adjust the output voltage of the motor 120 according to the motor compensation parameters. When the resistance of the mechanism increases, the motor load power will increase accordingly, so the real-time electric power index can reflect the motion load characteristics at the corresponding moment; the rotational speed of its related moving components will also decrease correspondingly, so the real-time component rotational speed can also reflect the corresponding moment. Motion load characteristics. In this embodiment, by setting the power detection unit 700 and the rotational speed detection unit 800, the real-time power of the motor and the rotational speed of the relevant moving parts can be collected in real time, and the real-time power and rotational speed can reflect the real-time motion state of the mechanism. It is collected to reflect the real motion characteristics of the mechanism. When the above data is input into the MCU chip 131, the program and algorithm preset in the MCU chip 131 can calculate and evaluate the comprehensive motion state of the mechanism, and the state data and the current input to the control of the motor 120 can be calculated and evaluated. By comparing the indicators, you can know whether the current output of the mechanism meets the control expectations, and calculate the output that needs to be compensated. For example, the user adjusts the product to a certain fixed motion gear by means of key control, etc., but the product encounters severe resistance during the movement process, which leads to a decrease in the movement rate of the mechanism. The MCU chip 131 obtains the resistance factor by monitoring and calculating the real-time power and real-time rotation speed. occurs, and the corresponding motor compensation parameters are calculated. Subsequently, the MCU chip 131 instantly increases the torque of the mechanism by instantaneously increasing the motor voltage to compensate for the resistance encountered by the mechanism. When the resistance is overcome, the movement rate of the mechanism increases rapidly. After the mechanism evaluates the characterization in real time, it adjusts accordingly. Motor voltage to stabilize the system movement rate.

It should be noted that, in this embodiment, the input index of the motor 120 is feedback-adjusted through real-time data. In practice, the output of the mechanism often cannot meet the control expectations through one-time feedback adjustment. Therefore, it is necessary to pass the power detection unit 700 and The rotational speed detection unit 800 collects motion data in real time, and performs multiple feedback adjustments until the mechanism output reaches the control expectation.

Referring to FIG. 6 , the electronic control board 130 is further provided with a driving MOS transistor electrically connected to the signal output end of the MCU chip 131 , and the power detection unit 700 is a sampling resistor connected in series with the driving MOS transistor. Specifically, in this embodiment, the motor voltage is adjusted by a PWM (pulse width modulation) signal. The MOT_CTRL signal in the circuit schematic diagram is the PWM signal output by the MCU chip 131, and the driving MOS tube includes two DP2060 N-channel driven in parallel. The enhanced MOS tube realizes the power collection by connecting a sampling resistor in series between the two MOS tubes. The sampling resistor is the alloy resistor R8 with a resistance of 0.03 ohm and a power of 1w in the circuit schematic diagram. Invention of the sampling circuit. During the working process of the mechanism, the real-time voltage state of the sampling resistor (ie the Vdet signal voltage) can reflect the real-time current of the motor 120, and the relationship is the motor current I = Vdet / R8, the two electrodes of the motor 120 are respectively connected to the M+ pin and M-pin, M+ pin is regulated power output or battery direct output. By measuring and calculating the real-time voltage and current of the motor 120 in the above mechanism, the real-time power of the motor 120 can be calculated and evaluated.

The rotational speed detection of the rotational speed detection unit 800 includes the following two schemes. First, the rotational speed detection unit 800 is a photoelectric encoder arranged at the output end of the motor 120 or the deceleration device 140, and the photoelectric encoder is used for each rotation of the output end of the motor 120 or the deceleration device 140. The MCU generates a pulse signal once, and the MCU chip 131 calculates the real-time rotational speed of the motor 120 or the deceleration device 140 according to the received pulse signal. Second, the rotational speed detection unit 800 includes a pointer member fixedly installed at the bottom of the gear 142 of the deceleration device 140, the end of the pointer member is provided with a magnetic member, the electric control board 130 is located below the pointer member, and the electric control board 130 is provided with a The MCU chip 131 is electrically connected to a Hall sensor for detecting the magnetic field strength. The pointer actually rotates synchronously with the transmission shaft 143. During the rotation of the pointer, the magnetic field intensity detected by the Hall sensor changes periodically. The MCU chip 131 calculates the number of cycles of the changing magnetic field intensity sent by the Hall sensor, that is, The number of rotations of the pointer member can be judged, and then the rotational speed of the transmission shaft 143 can be judged.

To implement the side-push type motor transmission mechanism 10 of the present invention, the motor 120 and the deceleration device 140 for driving the movement bracket 230 to slide are arranged at the bottom of the movement bracket 230, that is, a side-push type or a parallel layout is adopted, which reduces the product cost. Length dimension, the distance between the center of gravity of the product and the actuating device 240 set on the motion bracket 230 is small, thereby reducing the moment caused by the lever effect and the resistance value generated in the sliding direction of the vertical motion bracket 230, improving the The power transmission efficiency improves the energy consumption ratio of the product, enables the product to obtain greater power output or less power consumption, and improves the reliability of the product; The reaction force generated by the actuating device 240 on the user's wrist during the movement makes the product more comfortable to hold and improves the user's experience; in addition, the side-push or side-by-side layout makes the structure of the product more compact and reduces the number of structural parts The dosage is reduced, the product processing cost is reduced and the shape design of the product is facilitated.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

A side-push motor transmission mechanism, characterized in that it includes:

a housing, the inner cavity of the housing accommodates a power supply, a motor electrically connected to the power supply, and an electric control board that is electrically connected to the power supply and the motor to control the operation of the motor, the middle of the inner cavity of the housing is provided with a reduction gear connected to the output shaft of the motor, and the output end of the reduction gear passes through the top of the casing;

The sliding limit assembly includes two sliding rails extending along the length direction of the casing and respectively fixed on both sides of the casing, a main sliding block slidably matched with the two sliding rails respectively, and a main sliding block installed on the main sliding rail. The top of the slide and the motion bracket for mounting the external actuation device; and

a reversing device, comprising a crankshaft that rotates synchronously with the output end of the reduction gear, and a connecting rod that is rotatably connected to the crankshaft and the main slider respectively;

When the motor works, the speed reduction device drives the crankshaft to rotate, and pulls or pushes the main slider through the connecting rod, so that the main slider drives the moving bracket to slide along the slide rail.
The side-push type motor transmission mechanism according to claim 1, wherein the reduction gear comprises a worm drivingly connected with the motor output shaft and a gear engaged with the worm.
The side-push type motor transmission mechanism according to claim 2, wherein the output shaft of the motor is perpendicular or parallel to the output shaft of the gear.
The side-push motor transmission mechanism according to claim 2, wherein the sliding limit assembly further comprises an auxiliary sliding block sleeved on the sliding rail and fixedly connected with the moving bracket, the auxiliary sliding block The sliding block slides along the sliding rail under the driving of the moving bracket.
The side-push motor transmission mechanism according to claim 4, characterized in that a pair of guide holes extending in the longitudinal direction of the casing are provided in parallel on the top of the casing, and the top of the main slider and the auxiliary The tops of the sliders are respectively protruded to form plug pins, and the plug pins pass through the guide holes and are fixedly connected with the motion bracket.
The side-push type motor transmission mechanism according to claim 2, wherein the casing is provided with a limit stopper at both ends of the slide rail.
The side-push type motor transmission mechanism according to any one of claims 2 to 6, characterized in that, an MCU chip is arranged on the electronic control board, and the side-push type motor transmission mechanism further comprises a power compensation detection component, and the power The compensation detection component includes a power detection unit and a rotational speed detection unit electrically connected to the MCU chip, and the MCU chip receives and analyzes the detection values sent by the power detection unit and the rotational speed detection unit to calculate the motor compensation parameters, and according to Motor compensation parameters adjust the output voltage of the motor.
The side-push type motor transmission mechanism according to claim 7, wherein the electric control board is further provided with a driving MOS transistor electrically connected to the signal output end of the MCU chip, and the power detection unit is connected in series The sampling resistor on the drive MOS tube.
The side-push type motor transmission mechanism according to claim 7, wherein the rotational speed detection unit is a photoelectric encoder arranged at the output end of the motor or the reduction gear.
The side-push type motor transmission mechanism according to claim 7, wherein the rotational speed detection unit comprises a pointer member fixedly installed on the bottom of the gear of the reduction gear, the end of the pointer member is provided with a magnetic member, and the electric The control board is located below the pointer, and the electronic control board is provided with a Hall sensor electrically connected with the MCU chip and used for detecting the intensity of the magnetic field.