Self-resetting structure of self-knob switch

Abstract

The utility model provides a self-resetting structure of a self knob switch, which comprises an operating rod welding piece, a first adjusting plate, a second adjusting plate, a spring, a limiting plate, a potentiometer, a fixed base and the like, and is characterized in that the first adjusting plate, the second adjusting plate and the operating rod welding piece are fixedly connected through a first bolt assembly and a second bolt assembly; the spring is connected with the grooves at the tail ends of the first adjusting plate and the second adjusting plate; the limiting plate and the fixed base are fixed through the first bolt assembly and the second bolt assembly. The third bolt assembly and the fourth bolt assembly penetrate through the first fixing hole and the second fixing hole to fix the potentiometer on the fixing base. According to the utility model, only one tension spring is used to realize a switch automatic recovery function; and the fixed base and the potentiometer are installed through a long-strip-shaped hole, and the potentiometer can move within a certain range, so that the initial welding position of the operating rod is aligned with the original point of the potentiometer, and the machining difficulty of other parts is reduced.

Description

Technical Field

[0001] The utility model mainly relates to the field of plant protection, in particular to a self-resetting structure of a self-rotating knob switch. Background Art

[0002] Plant protection machinery is developing towards electrified control, and many potentiometers have two control units, positive and negative, and require a switch with a self-reset structure for auxiliary control. For example, if a potentiometer is rotated to the left, it can automatically return to the original point after releasing it; if the potentiometer is rotated to the right, it can still return to the original point after releasing it.

[0003] The utility model with application number "202321284978.6" discloses a spring reset button switch, including: a button seat, a movable part, a button, an elastic clamping part, a socket, a pin, a static contact piece, a moving contact piece and a connector; it is a self-locking switch with a mechanical locking structure, which can realize the normally open or normally closed control circuit. Specifically, a movable part and an elastic clamping part are provided, and a flat position is provided on the side of the movable part. The movable part rotates a certain angle so that the elastic clamping part is in the flat position, and the movable part can move up and down at this time; after the movable part is pressed down and rotated again by a certain angle, the elastic clamping part can be stuck on the upper end of the movable part to achieve locking; pressing and rotating the button can control the normally open or normally closed circuit. Although the utility model realizes the automatic reset of the button switch, the utility model cannot achieve accurate reset of the button switch, and the structure is easy to deform and has a short service life. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a self-resetting structure of a self-rotating knob switch. The technical solution is:

[0005] A self-resetting structure of a self-rotating knob switch, characterized in that it includes an operating rod welded part, a first adjustment plate, a second adjustment plate, a spring, a limit plate, a potentiometer, a fixed base, a first limit sleeve, a second limit sleeve, a first bolt assembly, a second bolt assembly, a third bolt assembly, and a fourth bolt assembly; the first adjustment plate circular hole of the first adjustment plate and the second adjustment plate circular hole of the second adjustment plate are overlapped and inserted into the fixed sleeve of the operating rod welded part, and are fixedly connected by the first bolt assembly and the second bolt assembly; the upper end of the spring is connected to the first adjustment plate groove at the end of the first adjustment plate; the lower upper end of the spring is connected to the first adjustment plate groove at the end of the second adjustment plate; the limit plate and the fixed base are fixed by the first bolt assembly and the second bolt assembly; the first limit sleeve and the second limit sleeve are sleeved on the first bolt assembly and the second bolt assembly between the limit plate and the fixed base; the third bolt assembly and the fourth bolt assembly pass through the first fixing hole and the second fixing hole to fix the potentiometer on the fixed base.

[0006] Furthermore, the first bolt assembly includes a first nut, a first bolt, a first spring washer, and a first flat washer.

[0007] Furthermore, the second bolt assembly includes a second nut, a second bolt, a second spring washer, and a second flat washer.

[0008] Furthermore, the third bolt assembly includes a third nut, a third bolt, a third spring washer, and a third flat washer.

[0009] Furthermore, the fourth bolt assembly includes a fourth nut, a fourth bolt, a fourth spring washer, and a fourth flat washer.

[0010] Furthermore, the operating rod welded component includes a fixing sleeve, a first sheet metal bending step, a first fixing plate, a second fixing plate, and a third fixing plate; the fixing sleeve, the second fixing plate, and the third fixing plate are all welded to the first fixing plate.

[0011] Furthermore, the first adjustment plate and the second adjustment plate are close to the first sheet metal bending step.

[0012] Furthermore, a second sheet metal bending step is provided on one side of the fixed base, a fixed base circular hole is opened in the middle, and a first fixing hole and a second fixing hole are provided around it.

[0013] Furthermore, the first fixing hole and the second fixing hole on the fixing base are in the shape of elongated strips.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. Only one tension spring is used to realize the function of automatic restoration of the switch after the operating rod is welded and moved left and right.

[0016] 2. The limit plate allows the operating rod to only perform rotational movement, reducing the lateral force of the left and right movement of the operating rod on the knob of the potentiometer and increasing the service life of the potentiometer.

[0017] 3. The long strip hole is used on the fixed base for installing the potentiometer. The potentiometer can have a certain range of displacement, so that the initial position of the welding operating rod is aligned with the origin of the potentiometer, reducing the difficulty of processing other parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the front view of the self-resetting structure of the rotary knob switch;

[0019] Figure 2 This is the left view of the self-resetting structure of the rotary knob switch;

[0020] Figure 3 It is a schematic diagram of the structure of the operating rod welding parts;

[0021] Figure 4is a schematic diagram of the structure of the first adjustment plate;

[0022] Figure 5 is a schematic diagram of the structure of the second adjustment plate;

[0023] Figure 6 It is a schematic diagram of the fixed base structure;

[0024] In the figure: 1, operating rod welding part; 1001, fixing sleeve; 1002, first sheet metal bending step; 1003, first fixing plate; 1004, second fixing plate; 1005, third fixing plate; 2, first adjustment plate; 21, first adjustment plate circular hole; 22, first adjustment plate groove; 3, second adjustment plate; 31, second adjustment plate circular hole; 32, second adjustment plate groove; 4, spring; 5, limit plate; 6, potentiometer; 7, fixing base; 71, second sheet metal bending step; 72, fixing base circular hole; 73, first fixing hole; 74, second fixing hole; 8, first Limiting sleeve; 9, second limiting sleeve; 10, first bolt assembly; 11, second bolt assembly; 12, third bolt assembly; 13, fourth bolt assembly; 101, first nut; 111, second nut; 121, third nut; 131, fourth nut; 102, first bolt; 112, second bolt; 122, third bolt; 132, fourth bolt; 103, first spring washer; 113, second spring washer; 123, third spring washer; 133, fourth spring washer; 104, first flat washer; 114, second flat washer; 124, third flat washer; 134, fourth flat washer. DETAILED DESCRIPTION

[0025] The following are specific embodiments, and in combination with the accompanying drawings, further describe the technical solution of the utility model. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0026] like Figure 1 , 2 As shown, the front view and the left view of the self-resetting structure of the self-rotating knob switch, the self-rotating knob switch self-resetting structure specifically includes an operating rod welded part 1, a first adjustment plate 2, a second adjustment plate 3, a spring 4, a limit plate 5, a potentiometer 6, a fixed base 7, a first limit sleeve 8, a second limit sleeve 9, a first bolt assembly 10, a second bolt assembly 11, a third bolt assembly 12, and a fourth bolt assembly 13.

[0027] The first bolt assembly 10 includes a first nut 101, a first bolt 102, a first spring washer 103, and a first flat washer 104; the second bolt assembly 11 includes a second nut 111, a second bolt 112, a second spring washer 113, and a second flat washer 114; the third bolt assembly 12 includes a third nut 121, a third bolt 122, a third spring washer 123, and a third flat washer 124; the fourth bolt assembly 13 includes a fourth nut 131, a fourth bolt 132, a fourth spring washer 133, and a fourth flat washer 134.

[0028] like Figure 3 , which is a schematic diagram of the structure of the operating rod welded component, the operating rod welded component 1 includes a fixing sleeve 1001, a first sheet metal bending step 1002, a first fixing plate 1003, a second fixing plate 1004, and a third fixing plate 1005; the fixing sleeve 1001, the second fixing plate 1004, and the third fixing plate 1005 are all welded to the first fixing plate 1003.

[0029] like Figure 4 , 5 The figure shows a schematic diagram of the structure of the first adjustment plate and the second adjustment plate. A first adjustment plate circular hole 21 is opened in the center of the left side of the first adjustment plate 2, and a first adjustment plate groove 22 is set at the right end. A second adjustment plate circular hole 31 is opened in the center of the left side of the second adjustment plate 3, and a second adjustment plate groove 32 is set at the right end.

[0030] The first adjustment plate circular hole 21 of the first adjustment plate 2 and the second adjustment plate circular hole 31 of the second adjustment plate 3 are overlapped and inserted into the fixing sleeve 1001 of the operating rod welded part 1, and are fixedly connected by the first bolt assembly 10 and the second bolt assembly 11; the upper end of the spring 4 is connected to the first adjustment plate groove 22 at the end of the first adjustment plate 2; the lower end of the spring 4 is connected to the second adjustment plate groove 32 at the end of the second adjustment plate 3; the first adjustment plate 2 and the second adjustment plate 3 are close to the first sheet metal bending step 1002. The limiting plate 5 and the fixed base 7 are fixed by the first bolt assembly 10 and the second bolt assembly 11, and the first limiting sleeve 8 and the second limiting sleeve 9 are sleeved on the first bolt assembly 10 and the second bolt assembly 11 between the limiting plate 5 and the fixed base 7. The limiting plate 5 plays a centering role, which allows the operating rod welded part to only perform rotational movement, reduces the lateral force of the left and right movement of the operating rod welded part 1 on the knob of the potentiometer 6, and improves the service life of the potentiometer 6.

[0031] like Figure 6The figure is a schematic diagram of the fixed base structure; a second sheet metal bending step 71 is provided on one side of the fixed base 7, a fixed base circular hole 72 is opened in the middle, and a first fixing hole 73 and a second fixing hole 74 are provided around it; the third bolt assembly 12 and the fourth bolt assembly 13 pass through the first fixing hole 73 and the second fixing hole 74 to fix the potentiometer 6 on the fixed base 7; when the second sheet metal bending step 71 moves to one side of the operating rod welding part 1, the second sheet metal bending step 71 drives the first adjustment plate 2 or the second adjustment plate 3 to move in the same direction, and the other second adjustment plate 3 or the first adjustment plate 2 is close to the second sheet metal bending step 71 and remains stationary. At this time, the spring 4 is stretched, and due to the action of the spring 4, the operating rod welding part 1 returns to its original position.

[0032] The first fixing hole 73 and the second fixing hole 74 on the fixing base 7 are long strips, and the potentiometer 6 can move within a certain range, so that the initial position of the operating rod welding part 1 is aligned with the origin of the potentiometer 6, and after alignment, the third bolt assembly 12 and the fourth bolt assembly 13 are locked. This design can effectively reduce the manufacturing precision requirements of each part and improve the qualification rate of the entire mechanism.

Claims

1. A self-resetting structure of a rotary knob switch, characterized in that: The invention comprises an operating rod welded component (1), a first adjustment plate (2), a second adjustment plate (3), a spring (4), a limit plate (5), a potentiometer (6), a fixed base (7), a first limit sleeve (8), a second limit sleeve (9), a first bolt assembly (10), a second bolt assembly (11), a third bolt assembly (12), and a fourth bolt assembly (13); the first adjustment plate circular hole (21) of the first adjustment plate (2) and the second adjustment plate circular hole (31) of the second adjustment plate (3) are overlapped and inserted into the fixed sleeve (1001) of the operating rod welded component (1), and are fixedly connected by the first bolt assembly (10) and the second bolt assembly (11); the upper end of the spring (4) is connected to The spring (4) is in a first adjustment plate groove (22) at the end of the first adjustment plate (2); the lower end of the spring (4) is connected to a second adjustment plate groove (32) at the end of the second adjustment plate (3); the limit plate (5) and the fixed base (7) are fixed by a first bolt assembly (10) and a second bolt assembly (11); the first limit sleeve (8) and the second limit sleeve (9) are sleeved on the first bolt assembly (10) and the second bolt assembly (11) between the limit plate (5) and the fixed base (7); the third bolt assembly (12) and the fourth bolt assembly (13) pass through the first fixing hole (73) and the second fixing hole (74) to fix the potentiometer (6) on the fixed base (7).

2. The self-resetting structure of a self-rotating knob switch according to claim 1, characterized in that: The first bolt assembly (10) comprises a first nut (101), a first bolt (102), a first spring washer (103), and a first flat washer (104).

3. The self-resetting structure of a self-rotating knob switch according to claim 1, characterized in that: The second bolt assembly (11) comprises a second nut (111), a second bolt (112), a second spring washer (113), and a second flat washer (114).

4. The self-resetting structure of a self-rotating knob switch according to claim 1, characterized in that: The third bolt assembly (12) comprises a third nut (121), a third bolt (122), a third spring washer (123), and a third flat washer (124).

5. The self-resetting structure of a self-rotating knob switch according to claim 1, characterized in that: The fourth bolt assembly (13) comprises a fourth nut (131), a fourth bolt (132), a fourth spring washer (133), and a fourth flat washer (134).

6. The self-resetting structure of a self-rotating knob switch according to claim 1, characterized in that: The operating rod welded component (1) comprises a fixing sleeve (1001), a first sheet metal bending step (1002), a first fixing plate (1003), a second fixing plate (1004), and a third fixing plate (1005); the fixing sleeve (1001), the second fixing plate (1004), and the third fixing plate (1005) are all welded to the first fixing plate (1003).

7. The self-resetting structure of a self-rotating knob switch according to claim 1, characterized in that: The first adjustment plate (2) and the second adjustment plate (3) are closely adjacent to the first sheet metal bending step (1002).

8. The self-resetting structure of a self-rotating knob switch according to claim 1, characterized in that: A second sheet metal bending step (71) is provided on one side of the fixed base (7), a fixed base circular hole (72) is opened in the middle, and a first fixing hole (73) and a second fixing hole (74) are provided around it.

9. The self-resetting structure of a self-rotating knob switch according to claim 1, characterized in that: The first fixing hole (73) and the second fixing hole (74) on the fixing base (7) are in the shape of long strips.

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