Motor positive and negative rotation rotary switch

Abstract

The utility model discloses a motor positive and negative rotation rotary switch, which comprises an upper shell and a lower shell which are buckled, a shaft hole is arranged in the middle of the lower shell, and an electrode stem is rotatably arranged in the shaft hole; an elastic reset structure is arranged between the lower end of the electrode stem and the inner bottom wall of the lower shell; a damping rotation structure is matched between one side of the inner wall of the lower shell and the side wall of the electrode stem; the two sides of the upper end of the electrode rod further extend to form electrode connecting plates, contact pin electrode plates are further clamped on the electrode connecting plates, a first contact set and a second contact set are arranged on the inner wall of the upper shell and matched with the two extreme movement positions of the two electrode connecting plates respectively, and when the electrode rod rotates, the contact pin electrode plates are electrically connected with the first contact set or the second contact set. Compared with the prior art, the motor forward and reverse rotation switch has the advantages that the motor forward and reverse rotation switch is convenient to operate and use, can be used as a rotation type forward and reverse rotation switch, has a reset function, and has a cut-off interval during switching.

Description

Technical Field

[0001] This utility model relates to the field of motor control technology, specifically to a motor forward and reverse rotary switch. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy. It utilizes a rotating magnetic field generated by an energized coil (i.e., the stator winding) to act on the rotor, creating a magnetoelectric torque.

[0003] Electric motors are widely used in existing technologies, including in various small crushers such as meat grinders. However, in practical applications, most of these devices require forward and reverse rotation to complete the meat grinding process and ensure the grinding effect. In practical applications, the reversal time is relatively short. Moreover, most existing forward and reverse switches are push-button type with no interruption interval, which can easily cause the motor to break. In addition, manual control is required to reset after reversing, which is inconvenient to use. Utility Model Content

[0004] (I) Problems to be solved

[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned technical defects and provide a convenient operation and use, a rotary forward and reverse switch with a reset function and a switching interruption interval for a motor.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a motor forward and reverse rotary switch, including an upper shell and a lower shell that are fastened together, wherein a shaft hole is provided in the middle of the lower shell, and an electrode rod is rotatably provided in the shaft hole;

[0008] An elastic reset structure is provided between the lower end of the electrode rod and the bottom wall of the lower shell, and a damping rotation structure is provided between one side of the inner wall of the lower shell and the side wall of the electrode rod.

[0009] Electrode connecting plates extend from both sides of the upper end of the electrode rod. Contact electrode plates are also engaged on the electrode connecting plates. The inner wall of the upper shell is provided with contact group one and contact group two at the two extreme movement positions of the two sets of electrode connecting plates. When the electrode rod rotates, the contact electrode plates are electrically connected to contact group one or contact group two.

[0010] The top of the upper shell has an indented arc groove for mounting electrode plates that mates with contact group one and contact group two.

[0011] As an improvement, the side wall of the upper shell is recessed with a slot, and the outer wall of the lower shell is recessed with a block to match the slot. When the upper shell and the lower shell are engaged, the outer walls of the upper shell and the lower shell are elastically engaged.

[0012] As an improvement, the elastic reset structure includes a retaining ring groove located at the top of the lower shell and a spring ring engaged in the retaining ring groove. A protruding rod is provided on the spring ring, and an arc-shaped block is provided on the electrode rod in conjunction with the protruding rod.

[0013] As an improvement, the damping rotation structure includes a mounting groove and a toothed block installed on the inner wall of the lower shell. A return spring is abutted between the toothed block and the inner wall of the mounting groove. A retaining tooth is provided on the electrode rod near the end of the toothed block along its stroke length.

[0014] As an improvement, the upper shell has a recessed track groove in the middle, the top of the electrode rod is engaged in the track groove, and the track groove is symmetrically provided with protrusions to limit the two extreme positions of the electrode rod. The electrode rod is provided with a stop block that cooperates with the protrusion. When the electrode rod rotates to any extreme position, the stop block abuts against the protrusion.

[0015] (III) Beneficial Effects

[0016] The advantages of this utility model compared with the prior art are as follows: In this application, the cooperation between the spring coil and the arc block allows the electrode rod to be reset after being released when the electrode rod is switched to the reverse state by twisting it. The additional damping rotation structure in this application makes it easier for users to feel the rotation state of the knob and provides a certain damping rod. In order to cooperate with the use of forward and reverse rotation, the additional protrusion and stop can further control the rotation stroke of the electrode rod. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a rotary switch for forward and reverse rotation of a motor.

[0018] Figure 2 This is a structural schematic diagram of a rotary switch for forward and reverse rotation of a motor, viewed from below.

[0019] Figure 3 This is a structural schematic diagram of the top shell from below.

[0020] Figure 4 This is a schematic diagram of the structure of the lower shell and the electrode rod.

[0021] Figure 5 This is a schematic diagram of the lower shell structure.

[0022] Figure 6 This is a structural diagram of the motor rod.

[0023] As shown in the figure: 1. Upper shell; 2. Lower shell; 3. Electrode rod; 4. Electrode connecting plate; 5. Contact group one; 6. Contact group two; 7. Electrode plate mounting arc groove; 8. Slot; 9. Slot block; 10. Snap ring slot; 11. Spring ring; 12. Protruding rod; 13. Arc block; 14. Mounting groove; 15. Tooth block; 16. Return spring; 17. Slot tooth; 18. Track groove; 19. Protrusion; 20. Stop block. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0025] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] To make the content of this utility model easier to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0029] Please refer to the appendix carefully. Figure 1-6 A motor forward and reverse rotary switch includes an upper shell 1 and a lower shell 2 that are fastened together. The lower shell 2 has a shaft hole in the middle, and an electrode rod 3 is rotatably disposed in the shaft hole.

[0030] An elastic reset structure is provided between the lower end of the electrode rod 3 and the inner bottom wall of the lower shell 2, and a damping rotation structure is provided between one side of the inner wall of the lower shell 2 and the side wall of the electrode rod 3; the state of the electrode rod 3 during use is controlled by the cooperation of the elastic reset structure and the damping rotation structure.

[0031] In one embodiment:

[0032] Electrode connecting plates 4 extend from both sides of the upper end of the electrode rod 3. Contact electrode pieces are also engaged on the electrode connecting plates 4. The inner wall of the upper shell 1 is provided with contact group 1 5 and contact group 2 6 at the two extreme movement positions of the two sets of electrode connecting plates 4, respectively. When the electrode rod 3 rotates, the contact electrode pieces are electrically connected to contact group 1 5 or contact group 2 6. The top of the upper shell 1 is recessed with electrode piece mounting arc groove 7 in cooperation with contact group 1 5 and contact group 2 6. The setting of the motor piece mounting arc groove 7 can be used to install two sets of arc-shaped electrode pieces, which are electrically connected to contact group 1 5 and contact group 2 6, respectively, so as to connect with the motor circuit for control.

[0033] In one embodiment:

[0034] The upper shell 1 has a recessed groove 8 on its side wall, and the lower shell 2 has a recessed block 9 on its outer wall to match the groove 8. When the upper shell 1 and the lower shell 2 are engaged, the outer wall of the upper shell 1 and the outer wall of the lower shell 2 are elastically engaged, and the assembly and use of the upper shell 1 and the lower shell 2 are completed through the block 9 and the groove 8.

[0035] In this application:

[0036] The elastic reset structure includes a retaining groove 10 located at the top of the lower shell 2 and a spring ring 11 engaged in the retaining groove 10. A protruding rod 12 protrudes from the spring ring 11, and an arc-shaped block 13 protrudes from the electrode rod 3 in conjunction with the protruding rod 12. The damping rotation structure includes a mounting groove 14 and a toothed block 15 mounted on the inner wall of the lower shell 2. A reset spring 16 abuts against the inner wall of the mounting groove 14. A retaining tooth 17 is provided on the electrode rod 3 near the end of the toothed block 15 along its stroke length. The retaining tooth 17 cooperates with the toothed block 15 and the reset spring 16 to dampen and lock the electrode rod when it rotates, providing a tactile feel when controlling the rotary switch.

[0037] In this application, the upper shell 1 has a recessed track groove 18 in the middle. The top of the electrode rod 3 is engaged in the track groove 18. The track groove 18 is symmetrically provided with protrusions 19 to limit the two extreme positions of the electrode rod 3. The electrode rod 3 is provided with a stop block 20 that cooperates with the protrusions 19. When the electrode rod 3 rotates to any extreme position, the stop block 20 abuts against the protrusions 19. Through the cooperation of the protrusions 19 and the stop block 20, the rotation stroke of the electrode rod 3 is located between the two protrusions 19, thereby controlling the switch to be in positive connection, current cut-off and negative connection. When rotating towards the negative connection side, the arc block 13 abuts against the protrusion 12 of the spring coil 11, causing the spring coil to deform. When the finger is loosened, the switch is reset by the action of the spring coil.

[0038] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0039] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0040] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A motor forward-reverse rotation switch, characterized by: The utility model provides a kind of electrode, including the upper shell (1) and the lower shell (2) of snap setting, the middle part of the lower shell (2) is equipped with shaft hole, and electrode stem (3) is rotatably arranged in shaft hole; Elastic reset structure is arranged between the lower end of electrode stem (3) and the inner bottom wall of lower shell (2), and damping rotation structure is matched between the inner wall of lower shell (2) and the side wall of electrode stem (3); The upper end of electrode stem (3) is also extended with electrode connecting plate (4), and contact foot electrode sheet is clamped on electrode connecting plate (4), and the inner wall of upper shell (1) is matched with the two limit motion positions of two electrode connecting plates (4) to be respectively provided with contact group one (5) and contact group two (6), when electrode stem (3) rotates, contact foot electrode sheet is electrically connected with contact group one (5) or contact group two (6); The top of upper shell (1) is concave with electrode sheet installation arc groove (7) matched with contact group one (5) and contact group two (6).

2. A motor forward-reverse rotation switch according to claim 1, characterized in that: The inner wall of the side wall of upper shell (1) is concavely provided with clamping groove (8), and the outer wall of lower shell (2) is concavely provided with clamping block (9) matched with clamping groove (8), when upper shell (1) and lower shell (2) are clamped, the outer wall of upper shell (1) and the outer wall of lower shell (2) are elastically matched.

3. A motor forward-reverse rotation switch according to claim 1, characterized in that: The elastic reset structure includes clamping spring groove (10) arranged on the inner top of lower shell (2) and spring ring (11) clamped in clamping spring groove (10), and convex rod (12) is convexly arranged on spring ring (11), and arc-shaped block (13) is convexly arranged on electrode stem (3) matched with convex rod (12).

4. A motor forward-reverse rotation switch according to claim 1 or 3, characterized in that: The damping rotation structure includes mounting groove (14) and tooth block (15) mounted on the inner wall of lower shell (2), reset spring (16) is arranged between the inner wall of mounting groove (14) and tooth block (15), and clamping tooth (17) is arranged on the end of electrode stem (3) close to tooth block (15) along the length of stroke.

5. A motor forward-reverse rotation switch according to claim 4, characterized in that: The inner middle part of upper shell (1) is concavely provided with track groove (18), and the top of electrode stem (3) is clamped in track groove (18), and convex block (19) for limiting two limit positions of electrode stem (3) is symmetrically arranged in track groove (18), and stop block (20) is arranged on electrode stem (3) matched with convex block (19), when electrode stem (3) rotates to any limit position, stop block (20) abuts against convex block (19).

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