Adjustable knob stop mechanism

Abstract

The utility model discloses an adjustable knob pause mechanism, comprising a bracket and an adjustable knob rotatably mounted on the bracket; a limit mechanism is provided between the contact surface of the adjustable knob and the bracket, the limit mechanism comprises a protrusion and a groove matched with the protrusion, the protrusion and the groove are respectively matched and arranged on two contact surfaces of the adjustable knob and the bracket that contact each other; a reset compression spring for pressing the protrusion into the groove is also provided between the bracket and the adjustable knob. The invention has a simple structure, strong practicality, and is easy to implement, and is expected to improve the operating experience of customers, and has a wide prospect of promotion and application.

Description

Technical Field

[0001] The utility model patent relates to the technical field of low-voltage electrical appliances, and specifically to an adjustable knob pause mechanism. Background Art

[0002] In the field of low-voltage electrical appliances, adjustable knobs are widely used for operations such as adjusting protection currents. However, existing adjustable knobs usually have one or more intermediate positions, but there are certain defects in the design. When a customer rotates the adjustable knob to adjust the intermediate position, the intermediate position may be inaccurately adjusted, which reduces the customer's user experience. Utility Model Content

[0003] In order to solve the above problems, the purpose of the utility model is to provide an adjustable knob pause mechanism that can achieve accurate positioning of the intermediate gear position and improve customer experience.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] An adjustable knob pause mechanism comprises a bracket and an adjustable knob rotatably mounted on the bracket; a limiting mechanism is provided between the contact surface of the adjustable knob and the bracket, the limiting mechanism comprises a protrusion and a groove matched with the protrusion, the protrusion and the groove are respectively matched and arranged on two contact surfaces of the adjustable knob and the bracket that contact each other; a reset compression spring is also provided between the bracket and the adjustable knob for pressing the protrusion into the groove.

[0006] Furthermore, there is at least one limiting mechanism, and if there is one intermediate gear, then there is one limiting mechanism, and if there are multiple intermediate gears, then the limiting mechanisms are set in corresponding quantity.

[0007] Furthermore, the protrusion is installed on the adjustable knob, and the groove is correspondingly installed on the surface where the bracket and the adjustable knob contact each other. The protrusion can rotate with the adjustable knob and be stuck in the groove under the pressure of the return spring or leave the groove by overcoming the elastic force of the return spring.

[0008] Furthermore, the convex surface of the protrusion and the concave surface of the groove are both spherical.

[0009] Furthermore, the return compression spring is arranged on the back side of the surface where the protrusion is located, so as to ensure that the protrusion is pressed into the groove by pressing the adjustable knob.

[0010] As an optimization of the above structure, to ensure that the protrusion can be pressed into the groove more stably, the protrusion is movably arranged in a preset hole of the adjustable knob and can move back and forth along the hole, and an auxiliary spring for pressing the protrusion into the groove is provided between the bottom of the hole and the protrusion.

[0011] The present invention realizes the positioning of the middle gear by setting a protrusion and a groove between the adjustable knob and the bracket. When the adjustable knob is rotated to the middle gear, under the action of the compression spring, the protrusion on the adjustable knob will sink into the groove of the bracket. At this time, the knob has an obvious pause during the rotation process, so that the middle gear position is accurately positioned. If the knob continues to rotate, the depth of the protrusion sinking into the groove is not deep because the action of the reset compression spring is not large. In addition, the protrusion and the groove adopt a spherical design, so the protrusion is easy to rotate out of the groove. The present invention has a simple structure, strong practicality, and is easy to implement. It is expected to improve the customer's operating experience and has a wide prospect for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described in detail below with reference to the accompanying drawings.

[0013] Figure 1 This is a structural schematic diagram of the adjustable knob pause mechanism of the utility model;

[0014] Figure 2 for Figure 1 A cross-sectional view of

[0015] Figure 3 It is a schematic diagram of the exploded structure of the adjustable knob pause mechanism of the utility model;

[0016] As shown in the figure: 1- bracket, 2- adjustable knob, 3- reset spring, 4- limit mechanism, 41- protrusion, 42- groove. DETAILED DESCRIPTION

[0017] The following is an explanation of the implementation of the present invention by specific embodiments. People familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example 1

[0020] like Figure 1-3 As shown, this embodiment provides an adjustable knob pause mechanism, including a bracket 1 and an adjustable knob 2 rotatably mounted on the bracket; a limit mechanism 4 is provided between the contact surface of the adjustable knob 2 and the bracket 1. There is at least one limit mechanism 4, when there is one intermediate gear, there is one limit mechanism 4, when there are multiple intermediate gears, the limit mechanism 4 is provided in corresponding quantity.

[0021] Each limiting mechanism 4 includes a protrusion 41 and a groove 42 matched with the protrusion 41, and the protrusion 41 and the groove 42 are respectively matched and arranged on the two contact surfaces of the adjustable knob 2 and the bracket 1. The protrusion 41 is installed on the adjustable knob 2, and the groove 42 is correspondingly installed on the surface where the bracket 1 and the adjustable knob 2 contact each other. The protrusion 41 can rotate with the adjustable knob 2 and be inserted into the groove 42 under the pressure of the return compression spring 3 or leave the groove 42 by overcoming the elastic force of the return compression spring 3. The convex surface of the protrusion 41 and the concave surface of the groove 42 are both spherical, which is convenient for the protrusion 41 to be inserted into or slide out of the groove 42.

[0022] A return spring 3 for pressing the protrusion 41 into the groove 42 is provided between the bracket 1 and the adjustable knob 2 . The return spring 3 is arranged on the back side of the protrusion 41 to ensure that the protrusion 41 is pressed into the groove 42 by pressing the adjustable knob 2 .

[0023] When in use, the adjustable knob 2 is rotated, and the protrusion 41 rotates with the adjustable knob 2 and screws into the groove 42 of the bracket 1, and is pressed firmly in the groove 42 by the return spring 3. At this time, the protrusion 41 will obviously pause, realizing accurate positioning of the middle gear. Example 2

[0024] The difference between this embodiment and embodiment 1 is that:

[0025] To ensure that the protrusion 41 can be pressed into the groove 42 more stably, and at the same time, during the rotation of the adjustable knob 2, the protrusion 41 makes soft contact with the bracket 1 to reduce the wear of the protrusion 41 on the bracket 1, the protrusion 41 is movably arranged in a preset hole of the adjustable knob 2 and can move back and forth along the hole, and an auxiliary spring for pressing the protrusion 41 into the groove 42 is provided between the bottom of the hole and the protrusion 41. During the rotation of the adjustable knob 2 relative to the bracket 2 toward the groove 42, the protrusion 41 overcomes the elastic force of the auxiliary spring and retracts into the preset hole of the adjustable knob 2. When the protrusion 41 rotates to face the groove 42, the auxiliary spring pushes the protrusion 41 out and presses it into the groove 42.

[0026] Other details of the present invention are all conventional techniques known to those skilled in the art.

[0027] It should be noted that the terms "comprises", "includes" or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0028] The protection scope of the present utility model is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An adjustable knob pause mechanism, comprising a bracket and an adjustable knob rotatably mounted on the bracket; characterized in that: A limiting mechanism is provided between the contact surface of the adjustable knob and the bracket, and the limiting mechanism includes a protrusion and a groove cooperating with the protrusion. The protrusion and the groove are respectively arranged on two contact surfaces where the adjustable knob and the bracket contact each other; a reset spring is also provided between the bracket and the adjustable knob for pressing the protrusion into the groove.

2. The adjustable knob pause mechanism according to claim 1, characterized in that: There is at least one limiting mechanism.

3. The adjustable knob pause mechanism according to claim 1, characterized in that: The protrusion is installed on the adjustable knob, and the groove is correspondingly installed on the surface where the bracket and the adjustable knob contact each other. The protrusion can rotate with the adjustable knob and be clamped into the groove under the pressure of the return compression spring or leave the groove by overcoming the elastic force of the return compression spring.

4. The adjustable knob pause mechanism according to claim 1, characterized in that: The convex surface of the protrusion and the concave surface of the groove are both spherical.

5. The adjustable knob pause mechanism according to claim 1, characterized in that: The return compression spring is arranged on the back side of the surface where the protrusion is located.

6. The adjustable knob pause mechanism according to claim 1, characterized in that: The protrusion is movably arranged in a hole preset in the adjustable knob and can move back and forth along the hole. An auxiliary spring for pressing the protrusion into the groove is arranged between the bottom of the hole and the protrusion.

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