DC motor forward and reverse control switch and a juicer including the control switch

Abstract

The present invention discloses a forward and reverse control switch for a DC motor, which includes a positive power supply, a negative power supply, a positive motor terminal, and a negative motor terminal. It further includes an adjustment component provided with a first movable conductive sheet and a second movable conductive sheet. The adjustment component drives the first movable conductive sheet and the second movable conductive sheet to move so as to switch to the forward rotation state or the reverse rotation state. The forward and reverse control switch for the DC motor, by providing the positive power supply, the negative power supply, the positive motor terminal, and the negative motor terminal, that is, two sets of electrodes, between the above two sets of electrodes, through the movement of the adjustment component, drives the first movable conductive sheet and the second movable conductive sheet to respectively connect to the corresponding electrodes, and switches to the forward rotation state or the reverse rotation state of the motor. Its structure is simple, and the operation of the adjustment component is easy. The present invention also discloses a juicer including the forward and reverse control switch for the DC motor, and the use effect of the product is significantly improved by this juicer.

Description

Technical Field

[0001] The present invention relates to a forward and reverse control switch for a DC motor and a juicer including the control switch. Background Art

[0002] In existing juicers, generally, there are a power supply, a DC motor, a screw, and a control switch. A control switch is provided between the power supply and the DC motor. The control switch connects the power supply and the current motor, and the screw is driven by the DC motor to rotate to process food materials. However, since the above juicer uses a DC motor and the connection between the power supply and the DC motor is fixed, the control switch can only control the DC motor to rotate forward (hereinafter referred to as: forward rotation), and cannot control reverse rotation, which to a certain extent affects the use effect of the product. For example, when the screw rotates forward in the pressing cylinder to press the fruit grains, some wet fruit grains will stick to the outer side wall of the screw and cannot be pressed, resulting in waste. Summary of the Invention

[0003] An object of the present invention is to provide a forward and reverse control switch for a DC motor with a simple structure and easy operation.

[0004] Another object of the present invention is to provide a juicer including a forward and reverse control switch for a DC motor to improve the use effect of the product.

[0005] The object of the present invention is achieved as follows:

[0006] A forward and reverse control switch for a DC motor includes a positive power supply terminal, a negative power supply terminal, a positive motor terminal, and a negative motor terminal. Characteristically, it further includes an adjustment component provided with a first movable conductive sheet and a second movable conductive sheet. The adjustment component drives the first movable conductive sheet and the second movable conductive sheet to move so as to switch to a forward rotation state or a reverse rotation state.

[0007] In the forward rotation state: the positive power supply terminal and the positive motor terminal are respectively in contact with the first movable conductive sheet, and the negative power supply terminal and the negative motor terminal are respectively in contact with the second movable conductive sheet;

[0008] In the reverse rotation state: the positive power supply terminal and the negative motor terminal are respectively in contact with the first movable conductive sheet, and the negative power supply terminal and the positive motor terminal are respectively in contact with the second movable conductive sheet;

[0009] For the above forward and reverse control switch for a DC motor, by providing a positive power supply terminal, a negative power supply terminal, a positive motor terminal, and a negative motor terminal, that is, two sets of electrodes (two poles of the power supply and two poles of the motor), through the movement of the adjustment component between the above two sets of electrodes, the first movable conductive sheet and the second movable conductive sheet are respectively connected to the corresponding electrodes to switch to the forward rotation state or the reverse rotation state of the motor. Its structure is simple, and the operation of the adjustment component is easy.

[0010] The object of the present invention can also adopt the following technical solutions:

[0011] Further, the adjusting component drives the first movable conductive sheet and the second movable conductive sheet to move, and further includes switching to an off state: there are gaps between the positive power supply terminal, the negative power supply terminal, the positive motor terminal and the negative motor terminal and the first movable conductive sheet and the second movable conductive sheet respectively; the off state can cut off the power supply of the motor, avoiding potential safety hazards caused by long-term power-on of each electrode.

[0012] Further, it further includes a housing, and a positive power supply terminal, a negative power supply terminal, a positive motor terminal and a negative motor terminal are arranged inside the housing. The positive motor terminal is arranged on one side of the positive power supply terminal and the negative power supply terminal, and the negative motor terminal is arranged on the other side of the positive power supply terminal and the negative power supply terminal; arranging the positive motor terminal and the negative motor terminal on both sides of the two poles of the power supply (the positive power supply terminal and the negative power supply terminal) can make the structure between each component more compact, and it is easier for the first movable conductive sheet and the second movable conductive sheet to be connected to the corresponding electrodes, so as to switch to the required state.

[0013] Further, the positive power supply terminal and the negative power supply terminal are arranged facing each other, and the positive motor terminal and the negative motor terminal are arranged facing each other. Such a structure is more reasonable and more compact.

[0014] Further, the positive power supply terminal, the negative motor terminal, the negative power supply terminal and the positive motor terminal are all conductive metal elastic sheets, which are arranged in a circular shape and at equal intervals inside the housing, so that the contact between the first movable conductive sheet and the second movable conductive sheet and the metal elastic sheets will be closer.

[0015] Further, the positive power supply terminal, the negative motor terminal, the negative power supply terminal and the positive motor terminal are all metal elastic sheets with the same shape and size. Each metal elastic sheet is provided with an arc-shaped abutting tail section. There are gaps between adjacent arc-shaped abutting tail sections, and they jointly enclose a circular space. The first movable conductive sheet and the second movable conductive sheet are located inside the circular space and respectively abut against the corresponding arc-shaped abutting tail sections.

[0016] Further, the adjusting component includes a switch rotating shaft and its elastic mechanism. The inner end of the switch rotating shaft is placed inside the housing on the inner sides of the positive power supply terminal, the negative motor terminal, the negative power supply terminal and the positive motor terminal. The first movable conductive sheet and the second movable conductive sheet are respectively fixed to the inner end of the switch rotating shaft. The outer end of the switch rotating shaft extends outside the housing. The two ends of the elastic mechanism respectively abut against the switch rotating shaft and the outer shell. The rotation of the switch rotating shaft drives the first movable conductive sheet and the second movable conductive sheet to rotate; the elastic mechanism can accurately reset the switch rotating shaft. Moreover, the rotation of the switch rotating shaft drives the first movable conductive sheet and the second movable conductive sheet on the inner end to rotate, so as to realize the switching of the corresponding state.

[0017] Furthermore, the inner end of the switch rotating shaft is in a plum blossom shape, and the first movable conductive sheet and the second movable conductive sheet are respectively clamped and fixed at the inner end of the plum blossom-shaped switch rotating shaft; the inner end of the plum blossom-shaped switch rotating shaft facilitates the easy clamping of the positive power supply, the negative motor terminal, the negative power supply, and the positive motor terminal, which is equivalent to switching to the corresponding state gear, greatly facilitating the use of the user.

[0018] Furthermore, both the first movable conductive sheet and the second movable conductive sheet are arc-shaped metal sheets, the first movable conductive sheet and the second movable conductive sheet are arranged back to back, the arc-shaped metal sheet includes an arc-shaped bottom sheet and hooks arranged on both sides of the arc-shaped bottom sheet and extending upward, and the arc-shaped bottom sheet closely adheres to the bottom surface of the inner end of the switch rotating shaft, and the hooks on both sides are clamped on the top surface of the inner end of the switch rotating shaft, so that the two arc-shaped metal sheets are firmly fixed at the inner end of the switch rotating shaft, avoiding poor contact caused by the loosening of the arc-shaped metal sheet.

[0019] Furthermore, a clamping groove is formed on the outer side wall of the inner end of the plum blossom-shaped switch rotating shaft, the hook is embedded in the clamping groove, and the upper end of the hook extends upward out of the clamping groove and is clamped on the top surface of the switch rotating shaft; the connection between the first movable conductive sheet and the second movable conductive sheet is more firm, and the clamping of each electrode is also more stable.

[0020] Furthermore, the housing includes an upper housing and a lower housing, the upper housing and the lower housing are covered and fixed to each other to form a housing with an internal cavity, and the positive power supply, the negative motor terminal, the negative power supply, the positive motor terminal, the first movable conductive sheet, and the second movable conductive sheet are all arranged in the internal cavity of the housing; its overall structure is reasonable and compact.

[0021] Another object of the present invention is achieved as follows: A juicer including the above-mentioned DC motor forward and reverse control switch includes a DC power supply and a motor. The characteristics are that the positive output terminal and the negative output terminal of the DC power supply are respectively connected to the positive power supply and the negative power supply, and the positive input terminal and the negative input terminal of the motor are respectively connected to the positive motor terminal and the negative motor terminal; by adding a DC motor forward and reverse control switch to the juicer, the user can switch between the forward rotation state and the reverse rotation state through the adjustment component, greatly improving the use effect of the product; for example, the screw rotates forward in the pressing cylinder to press the fruit grains, and some wet fruit grains will stick to the outer side wall of the screw. The user can control the switch to reverse the motor, so that the screw rotates in reverse, and the part of the food sticking to the screw is thrown out, so that when the screw rotates forward and reverse again, it can be processed to avoid waste, and the operation is simple.

[0022] The present invention has the following beneficial effects:

[0023] (1)This DC motor forward and reverse control switch is configured by setting the positive power supply, negative power supply, positive motor terminal, and negative motor terminal, namely: two sets of electrodes (the two poles of the power supply and the two poles of the motor). Through the movement of the adjustment component between these two sets of electrodes, the first movable conductive piece and the second movable conductive piece are respectively connected to the corresponding electrodes, switching to the forward rotation state or reverse rotation state of the motor. Its structure is simple, and the operation of the adjustment component is easy.

[0024] (2)Secondly, the rotation of the switch rotating shaft drives the rotation of the first movable conductive piece and the second movable conductive piece; the elastic mechanism can accurately reset the switch rotating shaft. Moreover, the rotation of the switch rotating shaft drives the rotation of the first movable conductive piece and the second movable conductive piece on its inner end, facilitating the switching between corresponding states.

[0025] (3)Furthermore, both the first movable conductive piece and the second movable conductive piece are arc-shaped metal sheets, which are arranged back to back. And the two arc-shaped metal sheets are firmly fixed to the inner end of the switch rotating shaft, preventing poor contact caused by the loosening of the arc-shaped metal sheets. Moreover, a clamping groove is formed on the outer side wall of the inner end of the plum blossom-shaped switch rotating shaft. The clamping hook is embedded in the clamping groove, and the upper end of the clamping hook extends upward out of the clamping groove and is clamped on the top surface of the switch rotating shaft, making the connection of the first movable conductive piece and the second movable conductive piece more firm and also making the clamping of each electrode more stable.

[0026] (4)Adding a DC motor forward and reverse control switch to the juice extractor allows users to switch between the forward rotation state and the reverse rotation state through the adjustment component, greatly improving the usage effect of the product; for example: the screw rotates forward in the pressing cylinder to press the fruit grains. Some of the moist fruit grains will stick to the outer side wall of the screw. Users can control the switch to reverse the motor, thereby reversing the screw and throwing out the part of the food sticking to the screw so that when the screw rotates forward and backward again, it can be processed to avoid waste, and the operation is simple. Description of the Drawings

[0027] Figure 1 is a schematic diagram of the DC motor forward and reverse control switch of the present invention.

[0028] Figure 2 is Figure 1 the exploded view of

[0029] Figure 3 is Figure 1 the enlarged view of the metal elastic sheet of

[0030] Figure 4 is Figure 1 the enlarged view of the second movable conductive sheet of

[0031] Figure 5 is a schematic diagram of the DC motor forward and reverse control switch of the present invention switched to the forward rotation state.

[0032] Figure 6 It is a schematic diagram of the forward and reverse control switch of the DC motor of the present invention switched to the reverse state.

[0033] Figure 7 It is a schematic diagram of the forward and reverse control switch of the DC motor of the present invention switched to the off state. Specific embodiments

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0035] As Figures 1 to 7 shown, a forward and reverse control switch for a DC motor includes a housing, and an adjustment assembly 5, a power supply positive electrode 1, a power supply negative electrode 2, a motor positive electrode 3, and a motor negative electrode 4 provided in the housing 8. The motor positive electrode 3 is provided on one side of the power supply positive electrode 1 and the power supply negative electrode 2, and the motor negative electrode 4 is provided on the other side of the power supply positive electrode 1 and the power supply negative electrode 2. A first movable conductive sheet 6 and a second movable conductive sheet 7 are provided on the adjustment assembly 5. The adjustment assembly 5 drives the first movable conductive sheet 6 and the second movable conductive sheet 7 to move, so as to switch to the forward rotation state A, the reverse rotation state B, or the off state C;

[0036] Forward rotation state A: The power supply positive electrode 1 and the motor positive electrode 3 are respectively in contact with the first movable conductive sheet 6, and the power supply negative electrode 2 and the motor negative electrode 4 are respectively in contact with the second movable conductive sheet 7;

[0037] Reverse rotation state B: The power supply positive electrode 1 and the motor negative electrode 4 are respectively in contact with the first movable conductive sheet 6, and the power supply negative electrode 2 and the motor positive electrode 3 are respectively in contact with the second movable conductive sheet 7;

[0038] Off state C: There are gaps between the power supply positive electrode 1, the power supply negative electrode 2, the motor positive electrode 3, and the motor negative electrode 4 and the first movable conductive sheet 6 and the second movable conductive sheet 7.

[0039] In this embodiment, the power supply positive electrode 1, the motor negative electrode 4, the power supply negative electrode 2, and the motor positive electrode 3 are all conductive metal elastic sheets with the same shape and size. They are arranged in a circular shape and are provided in the housing 8 at equal intervals. Among them, the power supply positive electrode 1 and the power supply negative electrode 2 are arranged facing each other, and the motor positive electrode 3 and the motor negative electrode 4 are arranged facing each other. An arc-shaped abutting tail section 9 is provided on each metal elastic sheet. There are gaps between adjacent arc-shaped abutting tail sections 9, and they jointly enclose a circular space 10. The first movable conductive sheet 6 and the second movable conductive sheet 7 are located in the circular space 10 and are respectively in contact with the corresponding arc-shaped abutting tail sections 9.

[0040] Figure 2As shown in the figure, the adjustment component 5 includes a switch rotating shaft 51 and its elastic mechanism 52. The inner end of the switch rotating shaft 51 is placed inside the housing 8 on the inner sides of the power supply positive electrode 1, the motor negative electrode 4, the power supply negative electrode 2, and the motor positive electrode 3. The first movable conductive sheet 6 and the second movable conductive sheet 7 are respectively fixed to the inner end of the switch rotating shaft 51. The outer end of the switch rotating shaft 51 extends outside the housing 8. The two ends of the elastic mechanism 52 are respectively abutted against the switch rotating shaft 51 and the outer shell 8. The rotation of the switch rotating shaft drives the rotation of the first movable conductive sheet and the second movable conductive sheet.

[0041] Among them, the inner end of the switch rotating shaft 51 is in a plum blossom shape, and the first movable conductive sheet 6 and the second movable conductive sheet 7 are respectively clamped to the inner end of the plum blossom-shaped switch rotating shaft 51.

[0042] As a more specific solution, both the first movable conductive sheet 6 and the second movable conductive sheet 7 are arc-shaped metal sheets. The first movable conductive sheet 6 and the second movable conductive sheet 7 are arranged back to back. The arc-shaped metal sheet includes an arc-shaped bottom sheet 21 and hooks 22 arranged on both sides of the arc-shaped bottom sheet and extending upward. The arc-shaped bottom sheet 21 is closely attached to the bottom surface of the inner end of the switch rotating shaft 51, and the hooks 22 on both sides are clamped to the top surface of the inner end of the switch rotating shaft 51.

[0043] Among them, a clamping groove 500 is formed on the outer side wall of the inner end of the plum blossom-shaped switch rotating shaft 51. The hook 22 is embedded in the clamping groove 500, and the upper end of the hook 22 extends upward out of the clamping groove 500 and is clamped to the top surface of the switch rotating shaft 51. The outer shell 8 includes an upper shell 81 and a lower shell 82. The upper shell 81 and the lower shell 82 are covered and fixed to each other to form a housing 8 with an internal cavity. The power supply positive electrode 1, the motor negative electrode 4, the power supply negative electrode 2, the motor positive electrode 3, the first movable conductive sheet 6, and the second movable conductive sheet 7 are all arranged in the internal cavity of the housing 8.

[0044] Working principle: Rotate the switch rotating shaft 51 to drive the rotation of the first movable conductive sheet 6 and the second movable conductive sheet 7. When the power supply positive electrode 1 and the motor positive electrode 3 are respectively abutted against the first movable conductive sheet 6, and the power supply negative electrode 2 and the motor negative electrode 4 are respectively abutted against the second movable conductive sheet 7, at this time, the four electrodes (that is, the metal elastic sheets are respectively clamped on the corresponding clamping grooves 500), and at this time, it is in the forward rotation state (gear position), and the motor rotates forward, as shown in Figure 5 shown;

[0045] Rotate the switch rotating shaft 51 again to drive the rotation of the first movable conductive sheet 6 and the second movable conductive sheet 7. When the power supply positive electrode 1 and the motor negative electrode 4 are respectively abutted against the first movable conductive sheet 6, and the power supply negative electrode 2 and the motor positive electrode 3 are respectively abutted against the second movable conductive sheet 7, at this time, the four electrodes (that is, the metal elastic sheets are respectively clamped on another corresponding clamping groove 500), and at this time, it is in the reverse rotation state (gear position), and the motor rotates in reverse, as shown in Figure 6 shown;

[0046] Rotate the switch shaft 51 again to drive the first movable conductive piece 6 and the second movable conductive piece 7 to rotate. When there are gaps between the positive power supply 1, the negative power supply 2, the positive motor terminal 3, and the negative motor terminal 4 and the first movable conductive piece 6 and the second movable conductive piece 7 respectively, at this time, the four electrodes (i.e., the metal elastic pieces are respectively clamped on the other corresponding clamping grooves 500), and at this time, it is in the off state (gear position), and the motor is powered off and stops working. See Figure 7 as shown.

[0047] A juicer, which includes a DC motor forward and reverse control switch, a DC power supply, and a motor. It is characterized in that the positive output terminal and the negative output terminal of the DC power supply are respectively connected to the positive power supply 1 and the negative power supply 2, and the positive input terminal and the negative input terminal of the motor are respectively connected to the positive motor terminal 3 and the negative motor terminal 4; for this juicer, through the DC motor forward and reverse control switch, the motor can work in the forward rotation state or the reverse rotation state, greatly improving the use effect of the product.

Claims

1. A DC motor forward and reverse control switch, comprising a power supply positive pole (1), a power supply negative pole (2), a motor positive pole (3) and a motor negative pole (4), characterized in that, It further includes an adjusting component (5), on which a first movable conductive sheet (6) and a second movable conductive sheet (7) are provided. The adjusting component (5) drives the first movable conductive sheet (6) and the second movable conductive sheet (7) to move so as to switch to the forward rotation state (A) or the reverse rotation state (B). The forward rotation state (A): The positive pole of the power supply (1) and the positive pole of the motor (3) are respectively in contact with the first movable conductive sheet (6), and the negative pole of the power supply (2) and the negative pole of the motor (4) are respectively in contact with the second movable conductive sheet (7). The reverse rotation state (B): The positive pole of the power supply (1) and the negative pole of the motor (4) are respectively in contact with the first movable conductive sheet (6), and the negative pole of the power supply (2) and the positive pole of the motor (3) are respectively in contact with the second movable conductive sheet (7). The adjusting component (5) drives the first movable conductive sheet (6) and the second movable conductive sheet (7) to move, and it also includes switching to the off state (C): There are gaps between the positive pole of the power supply (1), the negative pole of the power supply (2), the positive pole of the motor (3) and the negative pole of the motor (4) and the first movable conductive sheet (6) and the second movable conductive sheet (7). It further includes a housing (8), in which the positive pole of the power supply (1), the negative pole of the power supply (2), the positive pole of the motor (3) and the negative pole of the motor (4) are provided. The positive pole of the motor (3) is arranged on one side of the positive pole of the power supply (1) and the negative pole of the power supply (2), and the negative pole of the motor (4) is arranged on the other side of the positive pole of the power supply (1) and the negative pole of the power supply (2). The positive pole of the power supply (1) and the negative pole of the power supply (2) are arranged facing each other, and the positive pole of the motor (3) and the negative pole of the motor (4) are arranged facing each other. The adjusting component (5) includes a switch rotating shaft (51). The inner end of the switch rotating shaft (51) is placed inside the housing (8) on the inner sides of the positive pole of the power supply (1), the negative pole of the motor (4), the negative pole of the power supply (2) and the positive pole of the motor (3). The first movable conductive sheet (6) and the second movable conductive sheet (7) are respectively fixed to the inner end of the switch rotating shaft (51), and the rotation of the switch rotating shaft drives the first movable conductive sheet and the second movable conductive sheet to rotate. The adjusting component (5) further includes an elastic mechanism (52). The two ends of the elastic mechanism (52) are respectively in contact with the switch rotating shaft (51) and the housing (8), and the rotation of the switch rotating shaft drives the first movable conductive sheet and the second movable conductive sheet to rotate. Both the first movable conductive sheet (6) and the second movable conductive sheet (7) are arc-shaped metal sheets, and they are arranged back to back with each other.

2. The DC motor forward and reverse control switch according to claim 1, characterized in that, The positive pole of the power supply (1), the negative pole of the motor (4), the negative pole of the power supply (2) and the positive pole of the motor (3) are all conductive metal elastic sheets, which are arranged in a circular shape and are set in the housing (8) at equal intervals.

3. The DC motor forward and reverse control switch according to claim 1, characterized in that, The positive power supply terminal (1), the negative motor terminal (4), the negative power supply terminal (2), and the positive motor terminal (3) are all metal elastic pieces with the same shape and size. Each metal elastic piece is provided with an arc-shaped abutting tail section (9). There are gaps between adjacent arc-shaped abutting tail sections (9), and they jointly enclose a circular space (10). The first movable conductive sheet (6) and the second movable conductive sheet (7) are located within the circular space (10) and respectively abut against the corresponding arc-shaped abutting tail sections (9).

4. The DC motor forward and reverse control switch according to claim 1, characterized in that, The inner end of the switch rotating shaft (51) is in a plum blossom shape, and the first movable conductive sheet (6) and the second movable conductive sheet (7) are respectively clamped and fixed at the inner end of the plum blossom-shaped switch rotating shaft (51).

5. The DC motor forward and reverse control switch according to claim 4, characterized in that, The arc-shaped metal sheet includes an arc-shaped bottom sheet (21) and hooks (22) provided on both sides of the arc-shaped bottom sheet and extending upward. The arc-shaped bottom sheet (21) closely adheres to the bottom surface of the inner end of the switch rotating shaft (51), and the hooks (22) on both sides are clamped on the top surface of the inner end of the switch rotating shaft (51).

6. The DC motor forward and reverse control switch according to claim 5, characterized in that A clamping groove (500) is formed on the outer side wall of the inner end of the plum blossom-shaped switch rotating shaft (51). The hook (22) is embedded in the clamping groove (500), and the upper end of the hook (22) extends upward out of the clamping groove (500) and is clamped on the top surface of the switch rotating shaft (51).

7. The DC motor forward and reverse control switch according to claim 1, characterized in that, The housing (8) includes an upper housing (81) and a lower housing (82). The upper housing (81) and the lower housing (82) are covered and fixed to each other to form a housing (8) with an internal cavity. The positive power supply terminal (1), the negative motor terminal (4), the negative power supply terminal (2), the positive motor terminal (3), the first movable conductive sheet (6), and the second movable conductive sheet (7) are all arranged in the internal cavity of the housing (8).

8. A juicer comprising the DC motor forward and reverse control switch according to any one of claims 1-3, comprising a DC power supply and a motor, characterized in that, The positive output terminal and the negative output terminal of the DC power supply are respectively connected to the positive power supply terminal (1) and the negative power supply terminal (2), and the positive input terminal and the negative input terminal of the motor are respectively connected to the positive motor terminal (3) and the negative motor terminal (4).

Images