Control and protection switch

Abstract

The utility model discloses a control and protection switch, which comprises a switch body, an operation hole arranged on the switch body, a rotating shaft arranged in the operation hole, and a cylinder arranged on the outer side of the rotating shaft, one end of the cylinder is provided with a lower knob, and one side of the lower knob is provided with a plurality of transmission grooves which are annularly distributed at equal intervals. An upper knob is rotatably mounted on the outer side of the lower knob, a plurality of transmission blocks matched with the transmission grooves are arranged in the upper knob, a limiting column is fixedly connected to the middle of the interior of the lower knob, a spring sleeves the outer side of the limiting column, and a sleeve matched with the limiting column is arranged in the middle of the inner side of the upper knob; through the arrangement of the lower knob, the upper knob, the sleeve, the transmission block, the transmission groove, the limiting column and the spring, the mistaken touch prevention effect can be achieved, even if a person mistakenly touches the upper knob, due to the fact that the transmission block is separated from the transmission groove, the upper knob cannot drive the lower knob to rotate, then the rotating shaft cannot rotate, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a control and protection switch. Background Art

[0002] Control and protection switchgear is an important electrical product in the electrical field. It has the characteristics of high breaking capacity, long service life and rich protection functions. It also caters to the development needs of low-voltage electrical appliances, so it has a wide range of applications.

[0003] The handle of the existing control and protection switch has no anti-accidental touch function, and is prone to erroneous operation under the action of external force, and has low safety. Utility Model Content

[0004] The purpose of the utility model is to provide a control and protection switch to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a control and protection switch, comprising a switch body, an operating hole arranged on the switch body, a rotating shaft installed inside the operating hole, and a cylinder installed outside the rotating shaft, a lower knob is provided at one end of the cylinder, a plurality of transmission grooves equidistantly distributed in a ring shape are provided on one side of the lower knob, an upper knob is rotatably installed on the outer side of the lower knob, a plurality of transmission blocks matching with the transmission grooves are provided inside the upper knob, a limiting column is fixedly connected to the middle part of the inner part of the lower knob, a spring is sleeved on the outer side of the limiting column, and a sleeve matching with the limiting column is provided in the middle part of the inner side of the upper knob.

[0006] As a preferred solution of the utility model, the end of the transmission block away from the upper knob is provided with a chamfer.

[0007] As a preferred solution of the utility model, an indicator needle is integrally formed on the outer side of the lower knob.

[0008] As a preferred solution of the utility model, a convex edge is provided on the top of the lower knob, and a retaining edge is provided on the bottom of the upper knob.

[0009] As a preferred solution of the utility model, a protrusion is provided on the top of the upper knob.

[0010] As a preferred solution of the utility model, a rotating groove matching with the rotating shaft is provided at the bottom of the cylinder, and the cross-sections of the rotating groove and the rotating shaft are both rectangular.

[0011] Compared with the prior art, the beneficial effect of the utility model is that the utility model can prevent accidental touch by setting the lower knob, upper knob, sleeve, transmission block, transmission groove, limit column and spring. Even if someone touches the upper knob by mistake, the transmission block is separated from the transmission groove, and the upper knob cannot drive the lower knob to rotate, and then the rotating shaft cannot rotate, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 It is an exploded view of the utility model;

[0014] Figure 3 For this utility model Figure 2 The enlarged view of point A in the middle;

[0015] Figure 4 It is a structural schematic diagram of the upper knob and the lower knob of the utility model.

[0016] In the figure: 1. switch body; 2. lower knob; 3. upper knob; 4. protrusion; 5. indicator needle; 6. transmission groove; 7. convex edge; 8. cylinder; 9. operating hole; 10. rotating shaft; 11. limiting column; 12. spring; 13. transmission block; 14. sleeve; 15. retaining edge; 16. rotating groove. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figures 1 to 4The utility model provides a technical solution: a control and protection switch, comprising a switch body 1, an operating hole 9 arranged on the switch body 1, a rotating shaft 10 installed in the operating hole 9, and a cylinder 8 installed on the outside of the rotating shaft 10, a lower knob 2 is arranged at one end of the cylinder 8, a plurality of transmission grooves 6 are arranged on one side of the lower knob 2 and are distributed in an annular manner and at equal intervals, an upper knob 3 is rotatably installed on the outer side of the lower knob 2, when someone touches the upper knob 3 by mistake, the transmission block 13 is separated from the transmission groove 6, the upper knob 3 cannot drive the lower knob 2 to rotate, and further the rotating shaft 10 cannot rotate, thereby playing a role in preventing accidental touch and improving safety. The interior of the knob 3 is provided with a plurality of transmission blocks 13 that cooperate with the transmission groove 6. The middle part of the interior of the lower knob 2 is fixedly connected to the limiting column 11. The outer side of the limiting column 11 is sleeved with a spring 12. The spring 12 is used to apply a thrust to the sleeve 14, so that in the absence of external force, the transmission block 13 is always in a position separated from the transmission groove 6. The middle part of the inner side of the upper knob 3 is provided with a sleeve 14 that cooperates with the limiting column 11. The sleeve 14 is sleeved on the outer side of the limiting column 11. The sleeve 14 cooperates with the limiting column 11 to guide the upper knob 3, so that the upper knob 3 moves more smoothly and the transmission block 13 is easier to align with the transmission groove 6.

[0019] Among them, one end of the transmission block 13 away from the upper knob 3 is provided with a chamfer, and the chamfer makes it easier for the transmission block 13 to align with the transmission slot 6.

[0020] An indicator needle 5 is integrally formed on the outer side of the lower knob 2 , and the indicator needle 5 is used to facilitate the user to understand the rotation direction of the shaft 10 .

[0021] The top of the lower knob 2 is provided with a convex edge 7 , and the bottom of the upper knob 3 is provided with a retaining edge 15 , and the retaining edge 15 is used to block the convex edge 7 , thereby preventing the upper knob 3 from being separated from the lower knob 2 .

[0022] A protrusion 4 is provided on the top of the upper knob 3 , and the protrusion 4 facilitates the user to rotate the upper knob 3 .

[0023] The bottom of the cylinder 8 is provided with a rotation groove 16 matched with the rotation shaft 10. The rotation groove 16 is provided so that the cylinder 8 can drive the rotation shaft 10 to rotate. The cross sections of the rotation groove 16 and the rotation shaft 10 are both rectangular.

[0024] Specifically, when it is needed, the upper knob 3 is pressed downward, and the upper knob 3 drives the transmission block 13 and the sleeve 14 to move downward, the transmission block 13 enters the transmission groove 6, and the sleeve 14 compresses the spring 12. When the upper knob 3 is blocked by the indicator needle 5 and cannot move, the transmission block 13 completely enters the transmission groove 6, and then the upper knob 3 can be rotated through the protrusion 4. The upper knob 3 drives the lower knob 2 to rotate through the transmission block 13, and the lower knob 2 causes the rotating shaft 10 to rotate. After use, the upper knob 3 is released, and the spring 12 bounces back and resets to push the upper knob 3 upward, and the transmission block 13 is separated from the transmission groove 6. Even if someone accidentally touches the upper knob 3 to rotate, since the transmission block 13 is separated from the transmission groove 6, the upper knob 3 will not drive the lower knob 2 to rotate, and the rotating shaft 10 will not rotate, thereby improving safety.

[0025] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0027] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A control and protection switch, comprising a switch body (1), an operating hole (9) provided on the switch body (1), a rotating shaft (10) installed inside the operating hole (9), and a cylinder (8) installed outside the rotating shaft (10), characterized in that: A lower knob (2) is provided at one end of the cylinder (8), a plurality of transmission grooves (6) equidistantly distributed in an annular shape are provided on one side of the lower knob (2), an upper knob (3) is rotatably mounted on the outer side of the lower knob (2), a plurality of transmission blocks (13) matching with the transmission grooves (6) are provided inside the upper knob (3), a limiting column (11) is fixedly connected to the middle part of the inner part of the lower knob (2), a spring (12) is sleeved on the outer side of the limiting column (11), and a sleeve (14) matching with the limiting column (11) is provided in the middle part of the inner side of the upper knob (3).

2. The control and protection switch according to claim 1, characterized in that: The end of the transmission block (13) away from the upper knob (3) is provided with a chamfer.

3. The control and protection switch according to claim 1, characterized in that: An indicator needle (5) is integrally formed on the outer side of the lower knob (2).

4. The control and protection switch according to claim 1, characterized in that: The top of the lower knob (2) is provided with a convex edge (7), and the bottom of the upper knob (3) is provided with a retaining edge (15).

5. The control and protection switch according to claim 1, characterized in that: A protrusion (4) is provided on the top of the upper knob (3).

6. The control and protection switch according to claim 1, characterized in that: The bottom of the cylinder (8) is provided with a rotation groove (16) matched with the rotation shaft (10), and the cross-sections of the rotation groove (16) and the rotation shaft (10) are both rectangular.

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