A reciprocating motion device

Abstract

The present invention proposes a reciprocating motion device, including a main body support, a transmission wheel, a transmission belt, a follower arm, a connecting piece, a sliding body, a slide rail, a motor, a control circuit board and a shell. The present invention converts the flat ring motion mode of the transmission belt into a high-speed reciprocating motion mode of the sliding body through the follower arm and the connecting piece; at the same time, the noise of high-speed operation is suppressed by using a flexible transmission belt, a follower arm, a slide rail with elastic characteristics, and a sliding body with a sliding area and a resistance area; under the condition of the same stroke, space and weight are greatly saved. The scheme is a low-noise, small-volume, lightweight, low-cost high-speed reciprocating motion device.

Description

Technical Field

[0001] The invention relates to a reciprocating motion device. Background Art

[0002] The high-speed reciprocating mechanism of the prior art uses a circular path plus a connecting rod to generate reciprocating motion. If a longer reciprocating distance is required, this circular path mechanism will occupy a large space and be heavy. In addition, the mechanism uses hard connections. During the reciprocating motion, the gaps in the hard connections cause continuous collisions between the various components, resulting in faster reciprocating motion and greater noise. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a low-noise, high-speed reciprocating motion device, which adopts a flexible transmission belt to transmit power to a sliding body through a follower arm along a flat ring path, so that the sliding body produces reciprocating motion in a slide rail with elastic characteristics; the flexible transmission belt and the follower arm are in flexible contact, which can greatly reduce the impact noise during the movement, and adopts a slide rail with an open inner hole and elastic characteristics. The elastic properties of the slide rail enable the slide rail to closely contact the sliding body to eliminate impact; at the same time, compared with the circular path, the flat ring path greatly saves space and weight under the condition of the same stroke, especially in high-speed and long-stroke reciprocating mechanisms, which can better reflect the advantages of the present invention.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a reciprocating motion device, which includes a main body bracket, a transmission wheel, a transmission belt, a follower arm, a connecting piece, a sliding body, a slide rail, a motor, a control circuit board and a shell, the main body bracket, the transmission wheel, the motor output shaft, the transmission belt, the follower arm, the connecting piece, the sliding body, the slide rail constitute a mechanical compartment, the motor housing constitutes a motor compartment, the control circuit board constitutes an electrical compartment, the mechanical compartment, the motor compartment and the electrical compartment are all placed inside the shell, wherein the output end of the sliding body in the mechanical compartment is located outside the shell, and the main body bracket isolates the mechanical compartment and The motor bin, the main bracket is provided with a motor mounting position and a slide rail mounting position, the slide rail includes an open inner hole, the sliding body is provided with a transmission area, a sliding area and a resistance area, the follower arm is provided with a groove and a fixing hole, and the transmission belt is divided into an A area, a B area and a Z area in its width direction; the connection method is: the motor is installed at the motor mounting position of the main bracket, so that the housing of the motor is placed in the motor bin, the output shaft of the motor is located in the mechanical bin, the slide rail is installed at the slide rail mounting position of the main bracket, so that the slide rail is placed in the mechanical bin, and the open inner hole of the slide rail Cooperating with the sliding body, the transmission area of ​​the sliding body is connected to the fixing hole of the follower arm through the connecting piece, the groove of the follower arm is connected to the B area of ​​the transmission belt, the A area of ​​the transmission belt is connected to the transmission wheel, so that the transmission belt forms a flexible flat ring-shaped motion path, the transmission wheel is connected to the output shaft of the motor, and the control circuit board is connected to the wiring terminal of the motor; the working process is: the control circuit board drives the motor, and the motor output shaft drives the A area of ​​the transmission belt through the transmission wheel, so that the A area of ​​the transmission belt and the B area of ​​the transmission belt move together along the flat ring The follower arm is fixed to the B area of ​​the transmission belt through the groove and performs a flat ring motion with the transmission belt. When the follower arm moves to the tangent position of the transmission wheel and the transmission belt, the follower arm starts to rotate at this position, and completes the reversal when it rotates around the transmission wheel to the next tangent position, and then enters the straight area of ​​the flat ring to perform a straight line motion. As the transmission belt rotates, the above process is repeated continuously, that is, the follower arm drags the sliding body to reciprocate in the open inner hole of the slide rail, and the motion trajectory of the fixed hole of the follower arm is consistent with the direction of the center line connecting the two transmission wheels.

[0005] A reciprocating motion device, the main body bracket is used to fix the motor, the slide rail and the shell, the main body bracket includes a top surface, a bottom surface, a left side surface, and a right side surface, the top surface is provided with the slide rail mounting position, the slide rail mounting position is used to fix the slide rail, the slide rail is fixed from the bottom surface by screws, the bottom surface is provided with a motor mounting position, the position is used to install the motor, and the motor is fixed from the top surface by screws; the left side surface is provided with at least one left groove, at least one left mounting hole is arranged in the left groove, the left groove is used to position the shell, and the left mounting hole is used to fix the shell, the right side surface is provided with at least one right groove, at least one right mounting hole is arranged in the right groove, the right groove is used to position the shell, and the right mounting hole is used to fix the shell, the main body bracket is either installed with one motor and one driven shaft, or two motors are installed, and the motor and the driven shaft are respectively connected to their respective transmission wheels.

[0006] A reciprocating motion device, wherein the sliding body comprises a transmission area, a sliding area and a resistance area; the sliding area is located on the surface of the sliding body, the sliding area is in the form of a plane, the sliding area contacts the slide rail to cooperate with the sliding body to move on the slide rail, at least one sliding area is arranged on the surface of the sliding body, the resistance area is connected to the end of the sliding area, the resistance area is composed of a slope with a slope, and is used for slow deceleration and stopping of the sliding body to reduce the impact noise of the inertia of the sliding body on the slide rail, the transmission area has an internal opening, and is connected to the fixing hole of the follower arm through the connecting piece.

[0007] A reciprocating motion device, wherein the sliding body has either a single output end or a double output end, and the output end is provided with a card slot and a screw hole for connecting a dragging target.

[0008] A reciprocating motion device, wherein the slide rail includes an open inner hole, and the inner wall of the open inner hole is provided with at least three rollers at different angles. Since the open inner hole has the characteristic of elastic deformation, this characteristic enables the three rollers at different angles to closely contact the sliding body, thereby limiting the displacement of the sliding body outside the direction of movement; and at least one of the rollers is in close contact with the plane of the sliding area, and the close contact forms a straight contact line. The straight characteristic of the contact line prevents the sliding body from smoothly passing through the arc path of rotation, thereby limiting the rotation of the sliding body in the slide rail, thereby eliminating the sliding body hitting the slide rail during movement and the noise caused thereby.

[0009] A reciprocating motion device, the follower arm comprises an inner column, a fixing hole, an outer column, a platform, and a groove, the inner column and the outer column are placed on the platform, the groove is formed by the gap between the inner column and the outer column, the transmission belt is placed in the groove, the outer column is located on the outer side of the transmission belt and closely fits the outer side surface of the transmission belt, the inner column is located on the inner side of the transmission belt, the inner column closely fits the inner side surface of the transmission belt, the fixing hole passes through the inner column and the platform, the fixing hole is connected to the transmission area of ​​the sliding body through the connecting piece, that is, the follower arm is connected to the transmission belt and the sliding body at the same time, when the transmission belt runs along the flat ring path, the follower arm runs to the semicircular area of ​​the flat ring, the center line of the fixing hole coincides with the center line of the transmission wheel, and the follower arm rotates 180 degrees around the center line, that is, the follower arm rotates 180 degrees around the connecting piece on the fixing hole to complete the reciprocating motion.

[0010] The follower arm and the transmission belt are either integral or separate. When the follower arm and the transmission belt are separate, the connection between the follower arm and the transmission belt is either friction pressing, tooth engagement, hot melting, bonding, bolt connection, or welding; when the follower arm and the transmission belt are integral, the follower arm and the transmission belt are integrally formed.

[0011] A reciprocating motion device, wherein the follower arm is connected to the transmission area of ​​the sliding body through the connecting piece to form a connection point, the projection of the connection point in the direction of the transmission belt is located within the flat ring surrounded by the transmission belt, and the movement path of the connection point is consistent with the direction of the center line connecting the two transmission wheels, and the connecting piece is either a pin or a screw.

[0012] A reciprocating motion device, wherein the transmission belt is divided into three areas in the width direction: area A, area B, and area Z; the area A is used to connect the transmission wheel so that the transmission belt forms a flat ring, and the flat ring is a closed curve composed of two semicircles and two straight lines; the area B is used to connect the follower arm, and the working method is as follows: the power of the transmission wheel is transmitted to the area B of the transmission belt through the area A of the transmission belt, and the area B drags the follower arm to move, and the area Z is between the area A and the area B, and the area Z is a working gap to avoid the inner column of the follower arm from colliding with the transmission wheel; the working area of ​​the transmission wheel is limited to the area A of the transmission belt, and the transmission wheel transmits power to the area A of the transmission belt by either meshing or friction. At least one of the transmission wheels is a driving wheel, and the inner column of the follower arm is in close contact with the inner side surface of the transmission belt. The working area of ​​the inner column is limited to the area B of the transmission belt, and the outer column is in close contact with the outer side surface of the transmission belt.

[0013] A reciprocating motion device, wherein a pad is provided on the control circuit board to connect the wiring terminal of the motor, the pad on the control circuit board is parallel to the axis of the motor, and the control circuit board is parallel to the axis of the motor.

[0014] The beneficial effects of the present invention are as follows: compared with the high-speed reciprocating motion mechanism of the prior art, the present solution converts the flat ring motion mode into a high-speed reciprocating motion mode, and suppresses the noise of high-speed operation through the above-mentioned flexible transmission belt, follower arm, slide rail with elastic characteristics, and sliding body with sliding area and resistance area; under the condition of the same stroke, space and weight are greatly saved. The present solution is a low-noise, small-volume, lightweight, low-cost high-speed reciprocating motion device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 , a schematic diagram of the main support structure of a preferred embodiment of the present invention.

[0016] Figure 2 , a schematic diagram of the slide rail structure of a preferred embodiment of the present invention.

[0017] Figure 3 , a schematic diagram of the sliding body structure of the dual output end of the preferred embodiment of the present invention.

[0018] Figure 4 , a schematic diagram of the sliding body structure of a single output end of a preferred embodiment of the present invention.

[0019] Figure 5 , a schematic diagram of the follower arm structure of a preferred embodiment of the present invention.

[0020] Figure 6 , a schematic diagram of the transmission belt partition structure of a preferred embodiment of the present invention.

[0021] Figure 7 , an exploded view of the installation of the transmission belt, follower arm and sliding body of the preferred embodiment of the present invention.

[0022] Figure 8 , schematic diagram of the sliding body and slide rail assembly of the dual output end of the preferred embodiment of the present invention.

[0023] Fig. 9 , a schematic diagram of the assembly of a sliding body and a sliding rail of a single output end of a preferred embodiment of the present invention.

[0024] Fig.10 , a schematic structural diagram of a preferred embodiment of the present invention.

[0025] Description of reference numerals: 100 main support, 101 top surface, 103 left side surface, 104 right side surface, 105 left groove, 106 left mounting hole, 107 right groove, 109 motor mounting position, 110 slide rail mounting position, 111 screw hole for mounting motor, 112 bottom surface, 200 slide rail, 201 opening inner hole, 202 roller, 203 roller, 204 roller, 205 mounting hole, 300 sliding body, 301 transmission area, 302 sliding area, 303 resistance area, 304 output end, 305 opening hole, 306 other output end, 308 slot, 309 screw hole, 400 follower arm, 401 platform, 402 inner column, 403 outer column, 404 groove, 405 fixing hole, 406 connecting piece, bearing 407, transmission belt 500, 501 A area, 502 B area, 503 Z area, inner side 504, outer side 505, 600 housing, 701 transmission wheel, 801 motor, 803 motor terminal, 901 control circuit board. DETAILED DESCRIPTION

[0026] To facilitate understanding and implementation of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, which are provided for illustrative purposes only.

[0027] A preferred embodiment of the present invention relates to a reciprocating motion device.

[0028] Figure 1 This is a schematic diagram of the main support structure of a preferred embodiment of the present invention, including: 101 top surface, 103 left side surface, 104 right side surface, 105 left groove, 106 left mounting hole, 107 right groove, 109 motor mounting position, 110 slide rail mounting position, 111 screw hole for mounting the motor, and 112 bottom surface.

[0029] like Figure 1As shown, the main body bracket is used to fix the motor, the slide rail, and the shell, and includes a top surface 101, a bottom surface 112, a left side surface 103, and a right side surface 104. The top surface 101 is provided with a slide rail mounting position 110, which is used to fix the slide rail and is fixed by screws from the bottom surface 112 side of the main body bracket so that the slide rail is placed in the mechanical compartment; the bottom surface 112 of the main body bracket is provided with a motor mounting position 109, which is used to install the motor and is fixed by screws from the top surface 101 side through screw holes 111 so that the motor housing is placed in the motor compartment, and the output shaft of the motor passes through the main body bracket and is located in the mechanical compartment; the left side surface 103 is provided with three left grooves 105, each of which is provided with a left mounting hole 106, the left groove 105 is used to position the shell, and the left mounting hole 106 is used to fix the shell; the right side surface 104 is provided with three right grooves 107, each of which is provided with a right mounting hole, the right groove 107 is used to position the shell, and the right mounting hole is used to fix the shell. The main body bracket of the embodiment of the present invention can be used to install two motors or one motor and one driven wheel, and the output shaft of the motor is connected to each driving wheel.

[0030] Figure 2 This is a schematic diagram of the slide rail structure of a preferred embodiment of the present invention, including: an open inner hole 201, a roller 202, a roller 203, a roller 204, and a mounting hole 205.

[0031] The slide rail is an elastic material such as Figure 2 As shown, it includes an open inner hole 201, and three rollers 202, 203, and 204 with different angles are arranged on the inner wall of the open inner hole 201. Due to the design of the opening and the elastic material of the slide rail, the open inner hole 201 has the characteristic of elastic deformation. When the sliding body and the three rollers with different angles are tightly matched, the elastic deformation allows the three rollers with different angles to closely contact the sliding body from three different angles without over-pressing the sliding body to cause excessive increase in friction. This close contact limits the displacement of the sliding body in the non-movement direction; the roller 204 is used to closely fit with the sliding area plane of the sliding body. When the outer surface of the roller 204 is in close contact with the sliding area plane of the sliding body, the contact line formed is a straight line. The straight line characteristic of the contact line prevents the arc path of the sliding body from passing smoothly, that is, the straight line limits the sliding body from rotating outside the movement direction, thereby eliminating the sliding body hitting the slide rail during movement and the noise caused thereby, and ensuring the smooth reciprocating motion of the sliding body. The mounting hole 205 of the slide rail is used to connect with the slide rail mounting position on the main bracket so that the slide rail is placed in the mechanical compartment.

[0032] Figure 3 It is a schematic diagram of the sliding body structure of a dual output end of a preferred embodiment of the present invention, including: 301 transmission area, 302 sliding area, 303 resistance area, 304 output end, 305 opening, 306 another output end, 308 slot, 309 screw hole.

[0033] like Figure 3 As shown, the sliding body of this embodiment has a double output end, including a transmission area 301, two sliding areas 302, two resistance areas 303, an output end 304, an opening 305, another output end 306, a slot 308, and a screw hole 309; the sliding area 302 is located on the surface of the sliding body and is a plane. The sliding area plane is used to contact with the roller of the slide rail to cooperate with the sliding body to move on the slide rail. The resistance area 303 is located at the end of the sliding area. The resistance area 303 is composed of an inclined surface with a slope, which is used for slow deceleration and stopping of the sliding body to reduce the inertia of the sliding body. The impact noise of the slide rail, the transmission area 301 is located at the top of the two sliding areas 302, and there is an opening 305 inside the transmission area 301. The opening 305 is used to place a bearing. The bearing is connected to the follower arm through a connecting piece, so that the follower arm drags the sliding body to slide in the slide rail; the output ends 304 and 306 are respectively provided with a slot 308 and a screw hole 309 to connect the dragging target. This embodiment sets up a group of sliding areas and resistance areas, and can also set up multiple groups of sliding areas and resistance areas with different angles. The multiple different angles of the sliding area correspond to the multiple different angles of the roller in the slide rail.

[0034] Figure 4 It is a schematic diagram of the sliding body structure of a single output end of a preferred embodiment of the present invention, including: 301 transmission area, 302 sliding area, 303 resistance area, 304 output end, 305 opening, 308 slot, 309 screw hole.

[0035] like Figure 4 As shown, compared Figure 3 The sliding body of this embodiment has a single output end, and is provided with a sliding area 302 and a resistance area 303. The output end is provided with a card slot 308 and a screw hole 309, which will not be repeated here. This embodiment is provided with a group of sliding areas and resistance areas, and multiple groups of sliding areas and resistance areas with different angles can also be provided. The multiple different angles described here correspond to the multiple different angles of the roller in the slide rail.

[0036] Figure 5 This is a schematic diagram of the follower arm structure of a preferred embodiment of the present invention, including: a platform 401, an inner column 402, an outer column 403, a groove 404, and a fixing hole 405.

[0037] like Figure 5As shown, the inner column 402 and the outer column 403 of the follower arm are placed on the platform 401, and the groove 404 is formed by the gap between the inner column 402 and the outer column 403. The groove 404 is used to connect the transmission belt. The outer column 403 is located on the outside of the transmission belt and fits tightly to the outer side of the transmission belt. The working area of ​​the outer column shown in the figure is the B area of ​​the transmission belt. The length of the outer column 403 can be increased to cover the A area, B area and Z area of ​​the transmission belt at the same time. In this state, the pressure of the outer column 403 on the transmission belt can be dispersed to increase the service life; the inner column 402 is located on the inner side of the transmission belt, and the inner column 402 fits tightly to the inner side of the transmission belt. The working area of ​​the inner column 402 is limited to the B area of ​​the transmission belt. The fixing hole 405 runs through the inner column 402 and the platform 401. The fixing hole 405 is connected to the transmission area of ​​the sliding body through a connecting piece. As mentioned above, the follower arm is connected to the transmission belt and the sliding body at the same time.

[0038] Figure 6 Schematic diagram of the transmission belt partition structure of a preferred embodiment of the present invention, including: 501 A zone, 502 B zone, 503 Z zone, 400 follower arm, 402 follower arm inner column, 701 transmission wheel, the dotted lines in the figure are schematic diagrams of the separation of A, B, and Z zones, and a section of the transmission belt that blocks the view is omitted in the figure.

[0039] like Figure 6As shown, the transmission belt is divided into three areas in the width direction: area A 501, area B 502 and area Z 503. Area A 501 is used to connect two transmission wheels 701, so that the transmission belt forms a flexible flat ring motion path. As shown in the figure, the flat ring motion path is a closed path, which is composed of two semicircles and two straight lines. The two semicircles are located in the direction of the line connecting the centers of the transmission wheels. The two straight lines connect the breakpoints of the two semicircles respectively to form a closed path. The position where the above straight lines connect the breakpoints of the semicircles is the position where the transmission belt and the transmission wheel are connected. The tangent position of the driving wheel; the groove of the B area 502 is used to connect the follower arm 400, and the B area 502 is in close contact with the inner column 402 of the follower arm. The working area of ​​the driving wheel 701 is limited to the A area 501 of the transmission belt, and the working area of ​​the inner column 402 of the follower arm is limited to the B area 502 of the transmission belt. In this figure, there are no baffles on the two end faces of the driving wheel 701, and the vertical position of the transmission belt is limited by the follower arm 400; the working mode is: the power of the driving wheel 701 is transmitted through the A area 501 of the transmission belt To the transmission belt B area 502, the transmission belt B area 502 drags the follower arm to move, and the Z area 503 is located between the A area 501 and the B area 502. The Z area 503 is the working gap between the transmission wheel 701 and the inner column 402 of the follower arm to avoid the inner column 402 of the follower arm 400 from colliding with the transmission wheel 701; in this embodiment, the transmission wheel 701 transmits power to the transmission belt A area 501 either by meshing or by friction. When the groove of the follower arm runs to the semicircular area, that is, the intersection of the transmission belt and the transmission wheel When the driving belt is in the linear position, the groove of the follower arm 502 in area B drags the groove of the follower arm to move in a semicircular trajectory, that is, the groove of the follower arm rotates around the connecting piece. When the groove of the follower arm runs to the next tangent position of the transmission belt and the transmission wheel, that is, when it leaves the semicircular area, the follower arm completes the direction change action; then, area B 502 drags the groove of the follower arm into the straight line area and performs a linear motion. After that, the follower arm enters the other semicircular area to complete the reversal, and this cycle is repeated to convert the flat ring motion of the transmission belt into the reciprocating motion of the sliding body.

[0040] Figure 7 This is an exploded view of the transmission belt, follower arm, and sliding body installation of a preferred embodiment of the present invention, including: a sliding body transmission area 301, an output end 304, an opening 305, another output end 306, a bearing 307, an inner column 402, an outer column 403, a fixing hole 405, a connecting piece 406, a bearing 407, a transmission belt 500, an inner side surface 504, and an outer side surface 505.

[0041] For ease of understanding, now combined Figure 6 , Figure 7 Provide explanation.

[0042] like Figure 6 , Figure 7As shown, the transmission belt, follower arm, and sliding body are installed as follows: the transmission belt B zone 502 is installed in the groove 404 formed by the gap between the inner column 402 and the outer column 403, the outer column 403 is located on the outside of the transmission belt 500, and is tightly fitted to the outer side surface 505 of the transmission belt, and the outer column either covers the B zone 502 of the transmission belt, or covers the A zone 501, the B zone 502, and the Z zone 503 at the same time, the inner column 402 of the transmission belt is located on the inner side of the transmission belt 500, and is tightly fitted to the inner side surface 504 of the transmission belt, and only covers the B zone 502 of the transmission belt, and the fixing hole 405 passes through the inner column 402 and the platform; the bearing 307 and the bearing 407 are placed in the opening 305 of the transmission zone of the sliding body, and the connecting member 406 passes through the above-mentioned bearings to connect the transmission zone 301 and The fixing hole 405 of the follower arm, after connection, the follower arm can rotate around the connecting piece 406. Theoretically, in the semicircular area of ​​the transmission belt 500, the center line of the connecting piece 406 can coincide with the center line of the transmission wheel, and in the straight area of ​​the transmission belt 500, the center line of the connecting piece 406 can coincide with the center line of the two transmission wheels; in this embodiment, the connecting piece 406 is a screw, which is threadedly connected to the fixing hole 405 of the follower arm, and can also be changed to a pin as needed, and connected to the fixing hole 405 through a tight fit; in this embodiment, the follower arm and the transmission belt are split, and the connection method of the follower arm and the transmission belt is tooth meshing, which can also be changed to friction pressing, hot melting, bonding, bolt connection, welding, etc. as needed. The follower arm and the transmission belt can also be integrally formed.

[0043] Depend on Figure 6 , Figure 7 It can be seen that the follower arm connects the transmission belt 500 and the sliding body at the same time, and the movement trajectory of the center point of the fixing hole 405 of the follower arm is consistent with the direction of the center line of the two transmission wheels 701. The fixing hole 405 is connected to the transmission area 301 of the sliding body through the connecting piece 406 to form a connection point. The projection of the connection point in the direction of the transmission belt 500 is located within the flat ring surrounded by the transmission belt 500, and the movement path of the projection of the connection point theoretically coincides with the center line of the two transmission wheels 701. When the transmission belt 500 runs along the flat ring path, the follower arm drags the sliding body to follow the movement of the transmission belt. When the follower arm runs to the transmission wheel position, the center line of the fixing hole 405 coincides with the center line of the transmission wheel, and the follower arm rotates 180 degrees around the center line, that is, the follower arm rotates 180 degrees around the connecting piece 406 on the fixing hole 405, completing the reversal in the reciprocating motion, and then performing the linear motion area, over and over again, converting the flat ring motion of the transmission belt 500 into the linear reciprocating motion of the sliding body.

[0044] Figure 8This is a schematic diagram of the sliding body and slide rail assembly of a dual output end of a preferred embodiment of the present invention, including: 200 slide rail, 202 roller, 203 roller, 204 roller, 301 transmission area, 302 sliding area, 303 resistance area, 304 output end, 305 opening, 306 another output end.

[0045] like Figure 8 As shown, the sliding body is supported by two slide rails, and the transmission area 301 of the sliding body is between the two slide rails. The sliding area 302 of the sliding body is divided into two sections, and the transmission area 301 is located in the middle of the two sections of the sliding body. There is an opening 305 inside the transmission area 301, and the opening 305 is used to place a bearing. The bearing is connected to the follower arm through a connecting piece, so that the follower arm drags the sliding body to slide in the opening inner hole of the slide rail 200. The sliding area 302 contacts the roller 204 of the opening inner hole of the slide rail 200, and cooperates with the sliding body to move on the slide rail. The inner wall of the opening inner hole is provided with three rollers 204 at different angles. 2. The rollers 203 and 204 have the characteristic of elastic deformation in the inner holes of the openings. This characteristic enables the rollers at three different angles to closely contact the sliding body with interference fit from three different angles and maintain a small friction between the slide rail and the sliding body. The elastic characteristics of the inner holes of the openings limit the displacement of the sliding body outside the direction of movement. The rollers 204 fit closely with the sliding area 302 of the sliding body, and the contact line is a straight line. The rotation of the sliding body is an arc path, which cannot smoothly pass through the straight area, thereby limiting the rotation of the sliding body and eliminating the unexpected movement of the sliding body. and impact, thereby ensuring smooth reciprocating motion of the sliding body and reducing noise; the movement mode of the sliding body is: when the sliding body makes a straight line motion in the direction of the center line, the rollers 202, 203 and 204 hold the sliding body, and the friction between them and the rollers causes the rollers to rotate, and the roller 204 slides through the sliding area 302 and runs to the resistance area 303 at the end of the sliding area 302. The resistance area 303 is composed of an inclined surface with a slope. When the inclined surface contacts the roller, the inclined surface increases the outer circumference of the sliding body, and the roller provides a greater supporting force. The direction of the supporting force is the same as that of the inclined surface. It can be seen that the supporting force, in addition to supporting the sliding body, has a component force in the opposite direction of movement. As the inclined surface deepens, the deformation of the inner hole of the opening increases, and the reverse component force gradually increases, thereby achieving the purpose of gradually decelerating the sliding body and reducing the impact noise of the inertia of the sliding body on the slide rail. Due to the elastic deformation of the inner hole of the opening, the distance between the roller 204 and the rollers 202 and 203 is enlarged by the resistance area 303. This feature allows the sliding body and the slide rail to maintain a small friction force during the deceleration process, and move smoothly. Under the drag of the follower arm (see Figure 7 ), the movement direction of the sliding body changes, and the sliding body moves linearly toward the other output end 306. The movement process in this direction is the same as the movement process toward the output end 304, and will not be repeated here.

[0046] Fig. 9 It is a schematic diagram of the assembly of a sliding body and a slide rail with a single output end of a preferred embodiment of the present invention, including: roller 202, roller 203, roller 204, transmission area 301, sliding area 302, resistance area 303, output end 304, and opening 305.

[0047] like Fig. 9 As shown, in this embodiment, the sliding body is supported by two slide rails, the transmission area 301 of the sliding body is located outside the slide rails, the sliding body is provided with a sliding area 302, the sliding body is provided with two resistance areas 303, the transmission area 301 of the sliding body is located at the top of the sliding body, and there is an opening 305 inside the transmission area 301, and the opening 305 is used to place the bearing. Please refer to the working process and the movement process of the sliding body Figure 8 , I will not go into details here.

[0048] Fig.10 , a schematic structural diagram of a preferred embodiment of the present invention, comprising: 100 a main body bracket, 110 a slide rail mounting position, 200 a slide rail, 300 a sliding body, 301 a transmission area, 302 a sliding area, 303 a resistance area, 400 a follower arm, 406 a connecting piece, 500 a transmission belt, 600 a housing, 801 a motor, 803 a motor terminal, and 901 a control circuit board.

[0049] like Fig.10As shown, its connection method is: the main support 100, the transmission wheel, the transmission belt 500, the follower arm 400, the connecting piece 406, the sliding body 300, and the slide rail 200 constitute a mechanical compartment; the shell parts of the two motors 801 constitute a motor compartment, and the output shaft of the motor 801 passes through the main support 100, is in the mechanical compartment, and is connected to the transmission wheel; the control circuit board 901 constitutes an electrical compartment; the shell 600 is fixed to the main support 100 through the left groove and the left mounting hole, the right groove and the right mounting hole on the main support 100, and the mechanical compartment, the motor compartment and the electrical compartment are all inside the shell 600, wherein the two output ends of the sliding body 300 in the mechanical compartment are located outside the shell, the motor 801 is installed in the motor mounting position of the main support 100, and is fixed from the top surface of the main support 100 by screws, so that the shell of the motor 801 is placed in the motor compartment, and the output shaft of the motor 801 is placed in the mechanical compartment, and the slide rail 200 is installed in the slide rail mounting position 110 of the main support 100, The main support 100 is fixed by screws from the bottom surface so that the slide rail 200 is placed in the mechanical compartment, the sliding body 300 passes through the open inner hole of the slide rail 200, the transmission area 301 of the sliding body 300 is connected to the fixing hole of the follower arm 400 through the connecting piece 406, the groove of the follower arm 400 is connected to the B area of ​​the transmission belt 500, the inner column and the outer column of the follower arm 400 are tightly fitted with the inner side and the outer side of the transmission belt 500 respectively, so that the follower arm 400 is fixed on the transmission belt 500, that is, the follower arm 400 is connected to the sliding body 300 and the transmission belt 500 at the same time; the follower arm 400 uses meshing or friction to maintain its positioning in the direction of movement, and the follower arm 400 uses the limitation of the sliding body 300 to maintain its positioning in the vertical direction of the movement path; the A area of ​​the transmission belt 500 is connected to the transmission wheel, so that the transmission belt 500 forms a flexible flat ring-shaped movement path, the transmission wheel is connected to the output shaft of the motor 801, and the control circuit board 901 is connected to the wiring terminal 803 of the motor.

[0050] Depend on Fig.10 It can be seen that the movement trajectory of the center line of the fixed hole of the follower arm 400 is consistent with the center line of the two transmission wheels. The fixed hole is connected to the transmission area 301 of the sliding body 300 through the connecting piece 406 to form a connection point. The projection of the connection point in the direction of the transmission belt 500 is located within the flat ring surrounded by the transmission belt 500, and the movement path of the projection of the connection point coincides with the center line of the two transmission wheels.

[0051] The working process of a reciprocating motion device of a preferred embodiment of the present invention is: the control circuit board drives the motor 801 to run, and the motor 801 drives the A area of ​​the transmission belt through the transmission wheel, so that the A area of ​​the transmission belt and the B area of ​​the transmission belt move together along the flat ring path, and the follower arm 400 connected to the B area drags the sliding body 300 to follow the movement of the transmission belt 500. When the follower arm 400 runs to the semicircular area of ​​the flat ring, that is, when the follower arm 400 runs to the transmission wheel position, the center line of the fixed hole coincides with the center line of the transmission wheel, and the follower arm 400 rotates 180 degrees around the center line, that is, the follower arm 400 rotates 180 degrees around the connecting piece 406 on the fixed hole to complete the reversal in the reciprocating motion, and then the follower arm enters the straight line stage of the flat ring path, and repeats the cycle to convert the flat ring motion of the transmission belt 500 into the reciprocating motion of the sliding body 300, that is, the sliding body 300 reciprocates in the slide rail 200.

[0052] It is understandable that for those skilled in the art, various changes, modifications, substitutions and deformations can be made to the embodiments without departing from the principles and spirit of the present invention. For example, the main bracket can be in the form of a flat plate or a folding plate, and the motor and the slide rail can be installed and fixed by screws, slots, etc.; the sliding area of ​​the sliding body can be more than one as needed, and the connecting parts can be screws, pins, shafts and other parts of the prior art. Therefore, the above are only embodiments of the present invention and do not limit the scope of patent protection of the present invention. All equivalent structures made using the contents of the specification and drawings of the present invention, or directly or indirectly used in other related technical fields, are similarly included in the scope of patent protection of the present invention.

Claims

1. A reciprocating motion device, characterized in that: It includes a main body bracket, a transmission wheel, a transmission belt, a follower arm, a connecting piece, a sliding body, a slide rail, a motor, a control circuit board and a shell, wherein the main body bracket, the transmission wheel, the transmission belt, the follower arm, the connecting piece, the sliding body and the slide rail constitute a mechanical compartment, the motor housing constitutes a motor compartment, the control circuit board constitutes an electrical compartment, the mechanical compartment, the motor compartment and the electrical compartment are all placed inside the shell, wherein the output end of the sliding body in the mechanical compartment is located outside the shell, the main body bracket isolates the mechanical compartment and the motor compartment, the main body bracket is provided with a motor mounting position and a slide rail mounting position, the slide rail includes an open inner hole, the sliding body is provided with a transmission area, a sliding area and a resistance area, the follower arm is provided with a groove and a fixing hole, and the transmission belt is divided into an A area, a B area and a Z area in its width direction; The connection method is as follows: the motor is installed at the motor installation position of the main support, so that the housing of the motor is placed in the motor compartment, the output shaft of the motor is located in the mechanical compartment, the slide rail is installed at the slide rail installation position of the main support, so that the slide rail is placed in the mechanical compartment, the opening inner hole of the slide rail matches the sliding body, the transmission area of ​​the sliding body is connected to the fixing hole of the follower arm through the connecting piece, the groove of the follower arm is connected to the B area of ​​the transmission belt, the A area of ​​the transmission belt is connected to the transmission wheel, so that the transmission belt forms a flexible flat ring-shaped motion path, the transmission wheel is connected to the output shaft of the motor, and the control circuit board is connected to the wiring terminal of the motor; Its working process is as follows: the motor drives the A area of ​​the transmission belt through the transmission wheel, so that the A area of ​​the transmission belt and the B area of ​​the transmission belt move together along the flat ring path, the follower arm is fixed to the B area of ​​the transmission belt through the groove, and performs flat ring movement together with the transmission belt, when the follower arm moves to the tangent position of the transmission wheel and the transmission belt, the follower arm starts to rotate at this position, and completes the reversal when it rotates around the transmission wheel to the next tangent position, and then the follower arm enters the straight area of ​​the flat ring to perform straight line movement, and as the transmission belt runs, the above process is repeated continuously, that is, the follower arm drags the sliding body to reciprocate in the opening inner hole of the slide rail, and the movement trajectory of the fixing hole of the follower arm is consistent with the direction of the center line connecting the two transmission wheels; The main body bracket is used to fix the motor, the slide rail and the shell. The main body bracket includes a top surface, a bottom surface, a left side surface and a right side surface. The top surface is provided with the slide rail mounting position, which is used to fix the slide rail. The slide rail is fixed from the bottom surface by screws. The bottom surface is provided with a motor mounting position, which is used to install the motor. The motor is fixed from the top surface by screws. The left side surface is provided with at least one left groove, and at least one left mounting hole is provided in the left groove. The left groove is used to position the shell, and the left mounting hole is used to fix the shell. The right side surface is provided with at least one right groove, and at least one right mounting hole is provided in the right groove. The right groove is used to position the shell, and the right mounting hole is used to fix the shell. The main body bracket is either installed with one motor and one driven shaft, or two motors are installed. The motor and the driven shaft are respectively connected to their respective transmission wheels. The sliding body includes a transmission area, a sliding area and a resistance area. The sliding area is located on the surface of the sliding body. The sliding area is in the shape of a plane. The sliding area contacts the slide rail to cooperate with the movement of the sliding body on the slide rail. At least one sliding area is arranged on the surface of the sliding body. The resistance area is connected to the end of the sliding area. The resistance area is composed of a slope with a slope, which is used for slow deceleration and stopping of the sliding body to reduce the impact noise of the inertia of the sliding body on the slide rail. The transmission area has an internal opening, which is connected to the fixing hole of the follower arm through the connecting piece.

2. A reciprocating motion device according to claim 1, characterized in that: The sliding body has either a single output end or a double output end, and the output end is provided with a card slot and a screw hole.

3. A reciprocating motion device according to claim 1, characterized in that: The inner wall of the open inner hole of the slide rail is provided with at least three rollers at different angles. Since the open inner hole has the characteristic of elastic deformation, this characteristic enables the three rollers at different angles to closely contact the sliding body, thereby limiting the displacement of the sliding body outside the direction of movement, and at least one of the rollers is in close contact with the plane of the sliding area. The close contact forms a straight contact line. The straight characteristic of the contact line prevents the sliding body from smoothly passing through the arc path of rotation, thereby limiting the rotation of the sliding body in the slide rail.

4. A reciprocating motion device according to claim 1, characterized in that: The follower arm includes an inner column, a fixing hole, an outer column, a platform, and a groove. The inner column and the outer column are placed on the platform. The groove is formed by the gap between the inner column and the outer column. The transmission belt is placed in the groove, so that the outer column is located on the outside of the transmission belt and fits tightly to the outer side of the transmission belt. The inner column is located on the inside of the transmission belt and fits tightly to the inner side of the transmission belt. The fixing hole passes through the inner column and the platform. The fixing hole is connected to the transmission area of ​​the sliding body through the connecting piece, that is, the follower arm simultaneously connects the transmission belt and the sliding body. When the transmission belt runs along the flat ring path and the follower arm runs to the semicircular area of ​​the flat ring, the center line of the fixing hole coincides with the center line of the transmission wheel, and the follower arm rotates 180 degrees around the center line, that is, the follower arm rotates 180 degrees around the connecting piece to complete the reversal in the reciprocating motion.

5. A reciprocating motion device according to claim 1 or 4, characterized in that: The follower arm is connected to the transmission area of ​​the sliding body through the connecting piece to form a connecting point. The projection of the connecting point in the direction of the transmission belt is located within the flat ring surrounded by the transmission belt, and the projection of the movement path of the connecting point coincides with the center line connecting the two transmission wheels. The connecting piece is either a pin or a screw.

6. A reciprocating motion device according to claim 1 or 4, characterized in that: The transmission belt is divided into three areas in the width direction: area A, area B, and area Z. The area A is used to connect the transmission wheel so that the transmission belt forms a flat ring shape. The area B is used to connect the follower arm. The working method is: the power of the transmission wheel is transmitted to the area B of the transmission belt through the area A of the transmission belt, and the area B drags the follower arm to move. The area Z is between the area A and the area B. The area Z is a working gap to avoid the inner column of the follower arm from colliding with the transmission wheel; the working area of ​​the transmission wheel is limited to the area A of the transmission belt. The transmission wheel transmits power to the area A of the transmission belt by either meshing or friction. At least one of the transmission wheels is a driving wheel. The inner column of the follower arm is in close contact with the inner side of the transmission belt, and the working area of ​​the inner column is limited to the area B of the transmission belt.

7. A reciprocating motion device according to claim 1, characterized in that: The control circuit board has a pad connected to the wiring terminal of the motor, the pad on the control circuit board is parallel to the axis of the motor, and the control circuit board is parallel to the axis of the motor.

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