A multi-point contact switch

Abstract

The utility model discloses a kind of multi-point contact switches, including the lower shell and upper shell of sleeve joint setting, the bottom end of the lower shell is connected with several gear terminals along its perimeter direction, and reinforcing terminal is reversely provided with gear terminal, and fixed terminal is further connected with middle part;Gear handle is rotatably connected in the upper shell, and terminal block is connected with the lower end of gear handle, and movable contact piece is further connected on terminal block;Damping adjustment structure and elastic reset structure of reverse stroke setting are further connected between the top of the upper shell and terminal block and are set with the forward stroke of cooperation gear terminal.The utility model has the advantages compared with prior art: provide a kind of multi-point contact switch, which is convenient to operate gear, can be freely adjusted with multiple gears and high-power gears, and high-power automatic reset.

Description

Technical Field

[0001] This utility model relates to the field of rotary switch technology, specifically to a multi-point contact switch. Background Technology

[0002] A switch is an electronic component that can open a circuit, interrupt current, or divert current to other circuits. Currently, mechanical switches on the market are classified according to different operating methods: push-button type, trigger type, toggle type, and rotary type. Rotary switches are widely used in electrical appliances such as fans, lights, radios, and stereos due to their advantages such as ease of use, multiple adjustable positions, and reliable positioning.

[0003] Most rotary switches currently available can only be rotated normally when adjusting the gear settings. When customers need the maximum gear, they have to turn the switch one gear at a time. In addition, household motorized appliances such as meat grinders and juicers have limited rotation time at the maximum gear. Conventional switches also require users to turn the switch back from the high gear to the low gear to downgrade, which is inconvenient. 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 multi-point contact switch that is easy to operate, can freely adjust multiple levels and high power levels, and automatically resets when the power is high.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a multi-point contact switch, including a lower shell and an upper shell that are sleeved together, a plurality of position terminals are connected to the bottom end of the lower shell along its circumference, a reinforcing terminal is arranged opposite to the position terminals, and a fixed terminal is also connected to the middle part.

[0008] The upper shell is rotatably connected to a gear shift lever, and the lower end of the gear shift lever is connected to a terminal block, on which a movable contact piece is also connected.

[0009] When the gear lever is rotated in the forward direction, one end of the moving contact is always in contact with the fixed terminal, while the other end is intermittently electrically connected to any gear terminal.

[0010] When the gear lever is rotated in the reverse direction, one end of the moving contact is always in contact with the fixed terminal, and the other end is electrically connected to the reinforcing terminal.

[0011] The top of the upper shell is also connected to the terminal block by a damping adjustment structure that is configured to match the forward stroke of the gear terminal and an elastic reset structure that is configured to match the reverse stroke.

[0012] As an improvement, the damping adjustment structure includes a slider installed on the inner side wall of the upper shell and several locking teeth arranged along the outer wall of the terminal block, with the end of the slider matching the cross section of the locking teeth in a triangular shape;

[0013] The inner sidewall of the lower shell is provided with a sliding groove to cooperate with the slider, and a spring is provided between the slider and the sliding groove.

[0014] As an improvement, the elastic reset structure includes a retaining ring recessed in the top of the upper shell and a protruding foot on one side of the top of the terminal block. A torsion spring is sleeved inside the retaining ring. An opening is recessed on one side of the retaining ring, and a travel groove is formed on the other side to cooperate with the reverse travel of the gear shift handle. The two feet of the torsion spring are respectively inserted into the opening and the travel groove.

[0015] When the gear shift lever rotates in the opposite direction, the protruding foot abuts against the end foot of the torsion spring and moves along the travel groove.

[0016] As an improvement, the bottom wall of the lower shell is also recessed with a rotating groove, and the lower end of the terminal block is sleeved in the rotating groove.

[0017] Two sets of symmetrically arranged limiting feet are formed on the outer side of the rotating groove, and a limiting block that matches the limiting feet is protruding from the lower end of the terminal block. The distance between the two limiting feet is 180°.

[0018] The total stroke of the forward and reverse rotations is 180°.

[0019] As an improvement, the top of the lower shell is provided with an elastic groove, and the outer wall of the upper shell is provided with a locking foot that fits the elastic groove.

[0020] (III) Beneficial Effects

[0021] The advantages of this utility model compared with the prior art are as follows: by setting multiple gear terminals and reinforced terminals, and with the bidirectional contact design of the moving contact piece, it realizes the function of forward step-by-step adjustment and reverse one-button access to the high power gear, which solves the cumbersome problem of traditional rotary switches that require step-by-step switching. It is especially suitable for household appliances such as meat grinders and juicers that require quick switching between high and low gears. The elastic reset structure ensures that the high power gear is automatically reset to the initial position after use, avoiding damage to the equipment due to long-term high-load operation, and is easy to promote and use. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a multi-point contact switch.

[0023] Figure 2 This is a structural schematic diagram of a multi-point contact switch from a bottom view.

[0024] Figure 3 This is an exploded view of a multi-point contact switch.

[0025] Figure 4 This is a structural schematic diagram of a multi-point contact switch from a second-view exploded perspective.

[0026] Figure 5 This is a schematic diagram of a torsion spring.

[0027] Figure 6 This is a partial structural schematic diagram of a cross-section of a multi-point contact switch.

[0028] As shown in the figure: 1. Lower shell; 2. Upper shell; 3. Gear position terminal; 4. Reinforcing terminal; 5. Fixed terminal; 6. Gear position handle; 7. Terminal block; 8. Moving contact piece; 9. Slider; 10. Clamping tooth; 11. Slide groove; 12. Snap ring; 13. Protruding foot; 14. Torsion spring; 15. Stroke groove; 16. Rotation groove; 17. Limiting foot; 18. Limiting block; 19. Elastic groove; 20. Clamping foot. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Please refer to the appendix carefully. Figure 1-4A multi-point contact switch includes a lower shell 1 and an upper shell 2 that are sleeved together. The top of the lower shell 1 is provided with an elastic groove 19, and the outer wall of the upper shell 2 is provided with a locking foot 20 that cooperates with the elastic groove 19.

[0035] The bottom of the lower shell 1 is provided with a plurality of gear terminals 3 along its circumference, and a reinforcing terminal 4 is provided opposite to the gear terminals 3. A fixed terminal 5 is also provided in the middle. The upper shell 2 is rotatably connected to a gear handle 6. A terminal block 7 is provided at the lower end of the gear handle 6. A movable contact piece 8 is also provided on the terminal block 7.

[0036] In specific implementation, this utility model

[0037] When the gear lever 6 rotates in the forward direction, one end of the moving contact 8 is always in contact with the fixed terminal 5, and the other end is intermittently electrically connected to any gear terminal 3.

[0038] When the gear lever 6 rotates in the reverse direction, one end of the moving contact 8 is always in contact with the fixed terminal 5, and the other end is electrically connected to the reinforcing terminal 4.

[0039] In one embodiment:

[0040] The top of the upper shell 2 is also connected to the terminal block 7, and a damping adjustment structure and an elastic reset structure are provided for the forward stroke of the gear terminal 3 and the reverse stroke.

[0041] Specifically:

[0042] The damping adjustment structure includes a slider 9 installed on the inner side wall of the upper shell 2 and several locking teeth 10 arranged along the outer wall of the terminal block 7. The end of the slider 9 is arranged in a triangular cross section to match the locking teeth 10.

[0043] The inner sidewall of the lower shell 1 is provided with a sliding groove 11 to cooperate with the slider 9, and a spring is provided between the slider 9 and the sliding groove 11.

[0044] and

[0045] The elastic reset structure includes a retaining ring 12 recessed in the top of the upper shell 2 and a protruding foot 13 on one side of the top of the terminal block 7. A torsion spring 14 is sleeved inside the retaining ring 12. An opening is recessed on one side of the retaining ring 12, and a travel groove 15 is formed on the other side to cooperate with the reverse travel of the gear lever 6. The two feet of the torsion spring 14 are respectively inserted into the opening and the travel groove 15.

[0046] When the gear shift lever 6 rotates in the opposite direction, the protruding foot 13 abuts against the end foot of the torsion spring 14 and moves along the travel groove 15.

[0047] To ensure the stroke control of the rotary switch, the bottom wall of the lower housing 1 is also recessed with a rotating groove 16, and the lower end of the terminal block 7 is sleeved in the rotating groove 16.

[0048] Two sets of symmetrically arranged limiting feet 17 are formed on the outer side of the rotating groove 16, and a limiting block 18 that cooperates with the limiting feet 17 is protruding from the lower end of the terminal block 7. The distance between the two limiting feet 17 is 180°.

[0049] The total stroke of the forward and reverse rotations is 180°.

[0050] When the user rotates the gear shift lever, one end of the moving contact plate is always in contact with the fixed terminal, and the other end is connected to different gear terminals in sequence to achieve gear adjustment. The slider engages with the locking teeth under the action of the spring, providing tactile feedback. When the user quickly rotates it in the opposite direction to the reinforcing terminal, the protruding foot presses against the end of the torsion spring, triggering elastic reset. After being released, the torsion spring pushes the gear shift lever back to the initial position, preventing the high-power gear from being continuously powered.

[0051] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0052] 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.

[0053] 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 multi-point contact switch, comprising a lower shell (1) and an upper shell (2) sleeved together, characterized in that: The bottom end of the lower shell (1) is provided with a number of stop terminals (3) along its circumference, and a reinforcing terminal (4) is provided opposite to the stop terminals (3). A fixed terminal (5) is also provided in the middle. The upper shell (2) is rotatably connected to a gear shift handle (6), and a terminal block (7) is connected to the lower end of the gear shift handle (6). A movable contact piece (8) is also connected to the terminal block (7). When the gear lever (6) rotates in the forward direction, one end of the moving contact (8) is always in contact with the fixed terminal (5), and the other end is intermittently electrically connected to any gear terminal (3); When the gear lever (6) rotates in the reverse direction, one end of the moving contact (8) is always in contact with the fixed terminal (5), and the other end is electrically connected to the reinforcing terminal (4); The top of the upper shell (2) is also connected to the terminal block (7) by a damping adjustment structure for the forward stroke of the gear position terminal (3) and an elastic reset structure for the reverse stroke.

2. A multi-point contact switch according to claim 1, characterized in that: The damping adjustment structure includes a slider (9) installed on the inner side wall of the upper shell (2) and several locking teeth (10) arranged along the outer wall of the terminal block (7). The end of the slider (9) is arranged in a triangular cross section to match the locking teeth (10). The inner wall of the lower shell (1) is provided with a sliding groove (11) to cooperate with the slider (9), and a spring is provided between the slider (9) and the sliding groove (11).

3. A multi-point contact switch according to claim 1, characterized in that: The elastic reset structure includes a retaining ring (12) recessed in the top of the upper shell (2) and a protruding foot (13) on one side of the top of the terminal block (7). A torsion spring (14) is sleeved inside the retaining ring (12). An opening is recessed on one side of the retaining ring (12), and a travel groove (15) is formed on the other side to cooperate with the reverse travel of the gear lever (6). The two ends of the torsion spring (14) are respectively inserted into the opening and the travel groove (15). When the gear lever (6) rotates in the opposite direction, the protruding foot (13) abuts against the end foot of the torsion spring (14) and moves along the stroke groove (15).

4. A multi-point contact switch according to any one of claims 1-3, characterized in that: The bottom wall of the lower shell (1) is also recessed with a rotating groove (16), and the lower end of the terminal block (7) is sleeved in the rotating groove (16); Two sets of symmetrically arranged limiting feet (17) are formed on the outer side of the rotating groove (16), and a limiting block (18) that cooperates with the limiting feet (17) is protruding from the lower end of the terminal block (7). The distance between the two limiting feet (17) is 180°. The total stroke of the forward and reverse rotations is 180°.

5. A multi-point contact switch according to claim 1, characterized in that: The top of the lower shell (1) is provided with an elastic groove (19), and the outer wall of the upper shell (2) is provided with a locking foot (20) that fits the elastic groove (19).

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