Forward and reverse rotation centrifugal switch of garbage processor

Abstract

In order to solve the problem that an existing centrifugal switch only rotates forwards, two microswitches are arranged on one side in a wire box body (2) in an overlapped mode, and the two microswitches are arranged on the other side in the wire box body (2) in an overlapped mode. A reversing cam (12) is installed between the two microswitches and the other two microswitches, the lower end of the reversing cam (12) is connected with the lower end of a reversing rod (1) arranged outside the wire box body (2) through a short shaft (14), the reversing cam (12) is further connected with a bottom plate (6) of the wire box body (2) through a reset spring (13), and the short shaft (14) is connected with the bottom plate (6) of the wire box body (2) through a support (20) and a positioning seat (9). And the upper end of the reversing rod (1) is in contact with a lifting disc on the centrifuge (10).

Description

TECHNICAL FIELD

[0001] The present application relates to a garbage disposer, in particular to a garbage disposer reverse centrifugal switch composed of a centrifugal device sleeved on a rotating shaft of a motor and a micro switch connected with the centrifugal device. BACKGROUND

[0002] Chinese patent CN101587797A discloses a centrifugal switch suitable for motor driving, which has the structural features that the centrifugal device sleeved on the rotating shaft of the motor and the line box body connected with the centrifugal device, the centrifugal device is equipped with a sliding sleeve axially extended and sleeved on the rotating shaft, the line box body is equipped with a contact pole group, the contact of the contact pole group is controlled by the front end of a movable rod rotatingly matched with the line box body, a toggle lever is further provided, the middle part of the toggle lever is rotatingly matched with one side of the bottom surface of the line box body and is reset by a torsional spring, the front end of the toggle lever is in contact with the bottom end surface of the sliding sleeve and controls the rotation of the toggle lever by the sliding sleeve, and the tail end of the toggle lever is in contact with the movable rod. Therefore, the structure is only suitable for the forward rotation of the motor. When the garbage disposer is used to dispose kitchen garbage, the broken bones and shells in the kitchen garbage are easily stuck in the gap of the garbage disposer and make the motor stop gradually. When the motor is started again, the motor is easily stuck due to the forward rotation, and even the motor is damaged due to the excessive starting current. SUMMARY

[0003] The present application aims to provide a garbage disposer reverse centrifugal switch which can effectively reduce the motor stuck and prolong the service life of the motor.

[0004] To achieve the above-mentioned purpose, the garbage disposer reverse centrifugal switch comprises a centrifugal device sleeved on a rotating shaft of a motor and a switch in contact with the centrifugal device, the switch is composed of a line box body, a micro switch A, a micro switch B, a micro switch C, a micro switch D, a reversing lever, a reset spring and a reversing cam, the micro switch A and the micro switch C are arranged in a stacked manner on one side of the line box body, the micro switch B and the micro switch D are arranged in a stacked manner on the other side of the line box body, the reversing cam is installed between the micro switch A, the micro switch C and the micro switch B, the micro switch D, the lower end of the reversing cam is connected with the lower end of the reversing lever placed outside the line box body through a short shaft, the upper part of the reversing cam is in contact with and pressed against the micro switch A and the micro switch C when the reversing cam rotates, the middle part of the reversing cam is in contact with and pressed against the micro switch B and the micro switch D, the reversing cam is further connected with the bottom plate of the line box body through the reset spring, the short shaft is connected with the bottom plate of the line box body through a support and a positioning seat, and the upper end of the reversing lever is in contact with a lifting disc on the centrifugal device.

[0005] The lower end of the reversing rod outside the line box body is connected with the lower end of the reversing cam through a short shaft to form a U shape, and the center line of the reversing rod, the center line of the short shaft and the center line of the reversing cam form a U shape and are in the same axial plane.

[0006] The reversing cam is placed in the reset spring arranged on the line box body, and the reversing cam is arranged in a fan shape, and a protrusion A and a protrusion B are arranged on the two side surfaces of the top of the fan-shaped reversing cam and are arranged in a staggered manner, the protrusion A, the protrusion B and the reversing cam form an S shape in the horizontal plane, a protrusion C and a protrusion D are arranged on the two side surfaces of the middle of the fan-shaped reversing cam and are arranged in a staggered manner, the protrusion C, the protrusion D and the reversing cam form an inverted S shape in the horizontal plane, and the top protrusion A on one side of the fan-shaped reversing cam and the middle protrusion D are also arranged in a staggered manner in the vertical plane, and the top protrusion B on the other side of the fan-shaped reversing cam and the middle protrusion C are also arranged in a staggered manner in the vertical plane.

[0007] The reset spring is arranged in a V shape.

[0008] The line box body is composed of an upper plate, three connecting rods, four positioning columns and a bottom plate, the upper ends of the three connecting rods are respectively connected to the bottom surface of the upper plate and form an isosceles triangle shape, the upper ends of the four positioning columns are also respectively connected to the bottom surface of the upper plate and form an isosceles trapezoidal shape, two of the four positioning columns are arranged on the two sides of the vertex connecting rod of the isosceles triangle shape, facilitating the sleeving of the microswitch A, the microswitch B, the microswitch C and the microswitch D, the lower ends of the three connecting rods are connected to the bottom plate, and the lower ends of the four positioning columns are movably connected to the bottom plate.

[0009] Four blind holes for inserting the lower ends of the four positioning columns are arranged on the upper surface of the bottom plate in a right trapezoidal shape, three rectangular grooves for inserting and clamping the lower ends of the three connecting rods are arranged on the bottom plate in an isosceles triangle shape, a groove for mounting the support is arranged on the bottom plate, a positioning seat for placing the short shaft is arranged on the bottom plate, one end of the positioning seat is connected to the end surface of the bottom plate and forms a cantilever shape, and a Chinese character-shaped groove for mounting the V-shaped reset spring is also arranged on the bottom plate below the short shaft and close to the support.

[0010] The support is arranged in a Chinese character shape, two feet of the Chinese character-shaped support can be connected to the groove on the bottom plate, a blind hole for mounting the short shaft is arranged on the end surface of the support close to the reset spring, and a part of the end extends into the reset spring, facilitating the pressing of the lower part of the end on the reset spring.

[0011] The positioning seat is arranged in a V-shaped structure for limiting the swing angle of the reversing rod, a platform is arranged in the V-shaped structure, a semicircular groove for mounting the short shaft is arranged on the platform, a semicircular groove for limiting the axial movement of the short shaft is also arranged in the semicircular groove, and the center line of the V-shaped structure coincides with the center line of the reversing rod.

[0012] The positioning shoulder is arranged on the short shaft near the reversing lever and can be matched with the semicircular groove on the positioning base.

[0013] The contacts on the microswitch A, the microswitch B, the microswitch C and the microswitch D are arranged towards the reversing cam, the contact on the microswitch A corresponds to the top protrusion A of the reversing cam, the contact on the microswitch B corresponds to the top protrusion B of the reversing cam, the contact on the microswitch C corresponds to the middle protrusion C of the reversing cam, and the contact on the microswitch D corresponds to the middle protrusion D of the reversing cam, so that when the reversing cam rotates to the right, the protrusion B presses the contact of the microswitch B and the protrusion C presses the contact of the microswitch C, and when the reversing cam rotates to the left, the protrusion A presses the contact of the microswitch A and the protrusion D presses the contact of the microswitch D.

[0014] With the structure, the microswitch A and the microswitch C are arranged in a superimposed manner on one side of the line box body, the microswitch B and the microswitch D are arranged in a superimposed manner on the other side of the line box body, the reversing cam is arranged between the microswitch A, the microswitch C and the microswitch B, the microswitch D, the lower end of the reversing cam is connected with the lower end of the reversing lever arranged outside the line box body through the short shaft, the upper part of the reversing cam can be in contact with and pressed by the microswitch A and the microswitch C when the reversing cam rotates, the middle part of the reversing cam can be in contact with and pressed by the microswitch B and the microswitch D when the reversing cam rotates, the reversing cam is further connected with the bottom plate of the line box body through the return spring, the short shaft is connected with the bottom plate of the line box body through the support and the positioning base, and the upper end of the reversing lever is in contact with the lifting disc on the centrifugal machine. Thus, the motor can be effectively prevented from being stuck, and the service life of the motor is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0015] The application will be further described in detail below in combination with the drawings and examples.

[0016] ATTACHMENT Figure 1 is a perspective view of a garbage disposer forward and reverse centrifugal switch of the application.

[0017] ATTACHMENT Figure 2 is another perspective view of the attachment Figure 1 .

[0018] ATTACHMENT Figure 3 is a perspective view of a garbage disposer forward and reverse centrifugal switch reversing cam of the application.

[0019] ATTACHMENT Figure 4 is another perspective view of the attachment Figure 3 .

[0020] ATTACHMENT Figure 5 is an exploded perspective view of a garbage disposer forward and reverse centrifugal switch reversing cam and bottom plate of the application.

[0021] ATTACHMENTFigure 6 is a connection stereogram of the upper plate of the garbage disposer forward and reverse centrifugal switch, three connecting rods and four positioning columns.

[0022] attached Figure 7 is a stereogram of the bottom plate of the garbage disposer forward and reverse centrifugal switch.

[0023] In the figure: 1. reversing rod 2. line box body 3. upper plate 4. micro switch A 5. micro switch C 6. bottom plate 7. micro switch B 8. micro switch D 9. positioning seat 10. centrifugal device 11. connecting rod 12. reversing cam 13. return spring 14. short shaft 15. protrusion B 16. protrusion A 17. protrusion C 18. protrusion D 19. shoulder 20. support 21. positioning column. DETAILED DESCRIPTION

[0024] attached Figure 1 , attached Figure 2 , attached Figure 3 and attached Figure 4 The garbage disposer forward and reverse centrifugal switch shown in the figure comprises a centrifugal device 10 sleeved on the rotating shaft of a motor and a switch capable of contacting the centrifugal device 10. The switch is composed of a line box body 2, a micro switch A 4, a micro switch B 7, a micro switch C 5, a micro switch D 8, a reversing rod 1, a return spring 13 and a reversing cam 12. The micro switch A 4 and the micro switch C 5 are arranged in a superimposed manner on one side in the line box body 2, and the micro switch B 7 and the micro switch D 8 are arranged in a superimposed manner on the other side in the line box body 2. The reversing cam 12 is installed between the micro switch A 4, the micro switch C 5 and the micro switch B 7, the micro switch D 8. The lower end of the reversing cam 12 is connected with the lower end of the reversing rod 1 placed outside the line box body 2 through a short shaft 14, so that when the reversing cam 12 rotates, the upper part of the reversing cam 12 can be in contact with and pressed against the micro switch A 4 and the micro switch C 5 respectively, and the middle part of the reversing cam 12 can be in contact with and pressed against the micro switch B 7 and the micro switch D 8 respectively. The reversing cam 12 is further connected with the bottom plate 6 of the line box body 2 through the return spring 13, and the short shaft 14 is connected with the bottom plate 6 of the line box body 2 through the support 20 and the positioning seat 9. The upper end of the reversing rod 1 is in contact with a lifting disc on the centrifugal device 10. The lower end of the reversing rod 1 placed outside the line box body 2 is connected with the lower end of the reversing cam 12 through the short shaft 14 to form a U shape. The center line of the reversing rod 1, the center line of the short shaft 14 and the center line of the reversing cam 12 form a U shape and are in the same axial plane.

[0025] attached Figure 3 and attached Figure 4As shown, the reversing cam 12 is placed in the return spring 13 provided on the box body 2, and the reversing cam 12 is provided in a fan shape. On both sides of the top of the fan-shaped reversing cam 12, protrusions A16 and B15 are provided and arranged in a staggered manner. The protrusions A16, B15 and the reversing cam 12 are S-shaped on the horizontal plane. On both sides of the middle of the fan-shaped reversing cam 12, protrusions C17 and D18 are provided and arranged in a staggered manner. The protrusions C17, D18 are provided. The protrusion D18 and the reversing cam 12 are in an inverted S shape on the horizontal plane, so that the top protrusion A16 and the middle protrusion D18 on one side close to the fan-shaped reversing cam 12 are also staggered on the vertical plane, and the top protrusion B15 and the middle protrusion C17 on the other side close to the fan-shaped reversing cam 12 are also staggered on the vertical plane, so that when it is working, there is a micro switch on both sides that is subjected to force, ensuring that the reversing cam 12 is subjected to balanced force and is not prone to deformation and jamming of the short shaft 14.

[0026] Attachment Figure 5 As shown, the return spring 13 is arranged in a V shape.

[0027] Attachment Figure 1 , Attachment Figure 2 , Attachment Figure 6 and attached Figure 7As shown, the box body 2 is composed of an upper plate 3, three connecting rods 11, four positioning columns 21, and a bottom plate 6. The upper ends of the three connecting rods 11 are respectively connected to the bottom surface of the upper plate 3 and are in the shape of an isosceles triangle. The upper ends of the four positioning columns 21 are also respectively connected to the bottom surface of the upper plate 3 and are in the shape of an isosceles trapezoid. Two positioning columns 21 are arranged on both sides of the connecting rod 11 at the vertex of the isosceles triangle, which is convenient for fitting micro switches A4, B7, C5 and D8. The lower ends of the three connecting rods 11 are connected to the bottom plate 6, and the lower ends of the four positioning columns 21 are movably connected to the bottom plate 6. Four regular trapezoidal distributions are provided on the upper surface of the bottom plate 6 to enable the four A blind hole is inserted into the lower end of the positioning column 21, and three rectangular grooves are provided on the bottom plate 6 in the shape of an isosceles triangle, in which the lower ends of the three connecting rods 11 can be inserted and clamped. A groove is provided on the bottom plate 6 to install the support 20, and a positioning seat 9 is provided on the bottom plate 6 to place the short shaft 14, so that one end of the positioning seat 9 is connected to the end face of the bottom plate 6 and is cantilevered. A V-shaped groove is also provided on the bottom plate 6 near the support 20 just below the short shaft 14 to install the V-shaped reset spring 13; the support 20 is set into a "only" shape, and the two feet of the "only" shape support 20 can be connected to the groove on the bottom plate 6, and a groove for installing the V-shaped reset spring 13 is provided on one end face of the support 20 near the reset spring 13. The blind hole of the short shaft 14 is provided, and the end is extended to a part of the reset spring 13, so that the lower part of the end presses the reset spring 13; the positioning seat 9 is set to a V-shaped structure that can limit the swing angle of the reversing rod 1, and a platform is provided at the bottom of the V-shaped structure. A semicircular groove for mounting the short shaft 14 is provided on the platform, and a semicircular groove for limiting the axial movement of the short shaft 14 is further provided in the semicircular groove, and the center line of the V-shaped structure coincides with the center line of the reversing rod 1; a positioning shoulder 19 that can cooperate with the semicircular groove on the positioning seat 9 is provided on the short shaft 14 near the reversing rod 1; the micro switch A4, micro switch B7, micro switch C5 and micro switch A4 are placed on the reversing rod 1. The contacts on the micro switch D8 are arranged toward the reversing cam 12, so that the contacts on the micro switch A4 correspond to the protrusion A16 on the top of the reversing cam 12, the contacts on the micro switch B7 correspond to the protrusion B15 on the top of the reversing cam 12, the contacts on the micro switch C5 correspond to the protrusion C17 in the middle of the reversing cam 12, and the contacts on the micro switch D8 correspond to the protrusion D18 in the middle of the reversing cam 12. This makes it convenient for the protrusion B15 to press the contact of the micro switch B7 and the protrusion C17 to press the contact of the micro switch C5 when the reversing cam 12 turns right, and for the protrusion A16 to press the contact of the micro switch A4 and the protrusion D18 to press the contact of the micro switch D8 when the reversing cam 12 turns left.

[0028] During use, when the garbage disposer motor is stopped in forward rotation, the centrifugal 10 lifting piece is pressed down on the upper end of the reversing rod 1, rubbing and pressing the reversing rod 1 to the right, at this time, the reversing rod 1 is pressed to the right, thereby driving the reversing cam 12 to rotate to the right, triggering the micro switch B7 and the micro switch C5 and connecting the motor reverse rotation winding, when the motor is started again, it will reverse, and when it is reversed to a certain speed, the centrifugal 10 lifting piece is lifted under the action of centrifugal force, the reset spring 13 acts to reset the reversing cam 12 and cut off the starting winding. When the reverse rotation stops, the centrifugal 10 lifting piece is pressed down on the upper end of the reversing rod 1, rubbing and pressing the reversing rod 1 to the left, at this time, the reversing rod 1 is pressed to the left, thereby driving the reversing cam 12 to rotate to the left, triggering the micro switch A4 and the micro switch D8 and connecting the motor forward rotation winding, and so on.

Claims

1. A centrifugal switch for forward and reverse rotation of a garbage disposer, comprising a centrifuge mounted on a motor shaft and a switch capable of contacting the centrifuge, characterized in that: The switch is composed of a wire box body (2), a micro switch A (4), a micro switch B (7), a micro switch C (5), a micro switch D (8), a reversing rod (1), a return spring (13) and a reversing cam (12). The micro switch A (4) and the micro switch C (5) are arranged on one side of the wire box body (2) in a superimposed state, and the micro switch B (7) and the micro switch D (8) are arranged on the other side of the wire box body (2) in a superimposed state. A reversing cam (12) is installed between the micro switch A (4), the micro switch C (5) and the micro switch B (7), the micro switch D (8). The lower end of the reversing cam (12) is connected by a The short shaft (14) is connected to the lower end of the reversing rod (1) disposed outside the wire box body (2), so that when the reversing cam (12) rotates, the upper portion of the reversing cam (12) can be respectively contacted and squeezed with the micro switch A (4) and the micro switch C (5), and the middle portion of the reversing cam (12) can be respectively contacted and squeezed with the micro switch B (7) and the micro switch D (8). The reversing cam (12) is also connected to the bottom plate (6) of the wire box body (2) through the return spring (13). The short shaft (14) is connected to the bottom plate (6) of the wire box body (2) through the support (20) and the positioning seat (9). The upper end of the reversing rod (1) is in contact with the lifting plate on the centrifuge (10).

2. A forward and reverse centrifugal switch for a garbage disposer according to claim 1, characterized in that: The lower end of the reversing rod (1) disposed outside the wire box body (2) is connected to the lower end of the reversing cam (12) via a short shaft (14) to form a U shape, and the center line of the reversing rod (1), the center line of the short shaft (14) and the center line of the reversing cam (12) form a U shape and are in the same axial plane.

3. A centrifugal switch for forward and reverse rotation of a garbage disposer according to claim 1, characterized in that: The reversing cam (12) is placed in a return spring (13) provided on the line box body (2), and the reversing cam (12) is provided in a fan shape. A protrusion A (16) and a protrusion B (15) are provided on both sides of the top of the fan-shaped reversing cam (12) and are arranged in a staggered manner. The protrusion A (16), the protrusion B (15) and the reversing cam (12) are in an S shape on the horizontal plane. A protrusion A (16), a protrusion B (15) and a reversing cam (12) are provided on both sides of the middle of the fan-shaped reversing cam (12). The protrusion C (17) and the protrusion D (08) are arranged in a staggered manner, and the protrusion C (17), the protrusion D (18) and the reversing cam (12) are arranged in an inverted S shape on the horizontal plane, so that the top protrusion A (16) on one side of the fan-shaped reversing cam (12) and the middle protrusion D (18) are also arranged in a staggered manner on the vertical plane, and the top protrusion B (15) on the other side of the fan-shaped reversing cam (12) and the middle protrusion C (17) are also arranged in a staggered manner on the vertical plane.

4. A forward and reverse centrifugal switch for a garbage disposer according to claim 1 or 3, characterized in that: The return spring (13) is arranged in a V shape.

5. The forward and reverse centrifugal switch for a garbage disposer according to claim 1, characterized in that: The wire box body (2) consists of an upper plate (3), three connecting rods (11), four positioning columns (21), and a bottom plate (6). The upper ends of the three connecting rods (11) are respectively connected to the bottom surface of the upper plate (3) and form an isosceles triangle shape. The upper ends of the four positioning columns (21) are also respectively connected to the bottom surface of the upper plate (3) and form an isosceles trapezoid shape. Two of the positioning columns (21) are arranged on both sides of the connecting rod (11) at the vertex of the isosceles triangle shape, facilitating the sleeving of microswitch A (4), microswitch B (7), microswitch C (5), and microswitch D (8). The lower ends of the three connecting rods (11) are connected to the bottom plate (6), and the lower ends of the four positioning columns (21) are movably connected to the bottom plate (6).

6. A forward and reverse centrifugal switch for a garbage disposer according to claim 1 or 5, characterized in that: On the upper surface of the bottom plate (6), there are four blind holes distributed in a regular trapezoid shape into which the lower ends of the four positioning columns (21) can be inserted. On the bottom plate (6), there are three rectangular grooves distributed in an isosceles triangle shape into which the lower ends of the three connecting rods (11) can be inserted and clamped. On the bottom plate (6), there is a groove for installing the support (20). On the bottom plate (6), there is a positioning seat (9) for placing the short shaft (14), with one end of the positioning seat (9) connected to the end face of the bottom plate (6) and in a cantilever shape. On the bottom plate (6) directly below the short shaft (14) and near the support (20), there is also a rectangle-shaped groove for installing the V-shaped return spring (13).

7. The forward and reverse centrifugal switch for a garbage disposer according to claim 1, characterized in that: The support (20) is set in a shape like the Chinese character 'zhi'. The two feet of the 'zhi'-shaped support (20) can be connected to the groove on the bottom plate (6). On one end face of the support (20) near the return spring (13), there is a blind hole for installing the short shaft (14), and this end extends into the return spring (13) for a part, facilitating the lower part of this end to press the return spring (13).

8. The forward and reverse centrifugal switch for a garbage disposer according to claim 1, characterized in that: The positioning seat (9) is set in a V-shaped structure that can limit the swinging angle of the reversing lever (1). There is a platform at the inner bottom of the V-shaped structure. On the platform, there is a semi-circular groove for installing the short shaft (14). Inside the semi-circular groove, there is also a semi-circular groove for limiting the axial movement of the short shaft (14), and the center line of the V-shaped structure coincides with the center line of the reversing lever (1).

9. The forward and reverse centrifugal switch for a garbage disposer according to claim 1, characterized in that: On the short shaft (14) near the reversing lever (1), there is a positioning shoulder (19) that can cooperate with the semi-circular groove on the positioning seat (9).

10. The forward and reverse centrifugal switch for a garbage disposer according to claim 1, characterized in that: The contacts of the micro switch A (4), micro switch B (7), micro switch C (5) and micro switch D (8) are arranged toward the reversing cam (12) so that the contact of the micro switch A (4) corresponds to the protrusion A (16) on the top of the reversing cam (12), the contact of the micro switch B (7) corresponds to the protrusion B (15) on the top of the reversing cam (12), and the contact of the micro switch C (5) corresponds to the protrusion C ( 17), the contact on the micro switch D (8) corresponds to the protrusion D (18) in the middle of the reversing cam (12), so that when the reversing cam (12) turns right, the protrusion B (15) presses the contact of the micro switch B (7) and the protrusion C (17) presses the contact of the micro switch C (5), and when the reversing cam (12) turns left, the protrusion A (16) presses the contact of the micro switch A (4) and the protrusion D (18) presses the contact of the micro switch D (8).

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