High-stability knob assembly for air delay head

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to a high-stability knob assembly for an air delay head, which comprises a knob assembly and is characterized in that the knob assembly comprises a knob and a filter disc, a bottom plate is arranged at the bottom of the knob, and the filter disc is mounted in the knob. According to the utility model, the bottom plate is additionally arranged on the knob for protecting the bottom of the knob; a protrusion is arranged in the base, friction force between the base and a matching piece is reduced by reducing friction, and therefore stability is improved.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliance accessories, in particular to a high-stability knob assembly for an air delay head. Background Art

[0002] The air delay head (air damping time relay) is also called the airbag time relay. It uses the principle of damping when air passes through a small hole to obtain delay. It consists of three parts: the electromagnetic system, the delay system, and the contact system. The air delay head is an accessory of the contactor and the contactor relay. The delay head is hung on the contactor or the contactor relay to connect and disconnect the circuit at a predetermined time. Traditional contactors have a variety of expansion modules, and the air delay head is one of them. The existing air delay head includes a knob assembly, which adjusts the length of the delayed work by turning the knob assembly. Utility Model Content

[0003] The utility model provides a high-stability knob assembly for an air delay head, which proposes adding a base plate on the knob to protect the bottom of the knob; a protrusion is provided in the base to reduce friction with a matching piece by reducing friction, thereby improving stability.

[0004] The utility model provides the following technical solution: a high-stability knob assembly for an air delay head, comprising a knob assembly, wherein the knob assembly comprises a knob and a filter, a bottom plate is provided at the bottom of the knob, and the filter is installed inside the knob.

[0005] Preferably, the bottom of the knob is provided with a plurality of holes 1, the bottom plate is provided with hole 2, and the hole 2 overlaps with one of the holes 1 to form a through hole.

[0006] Preferably, the bottom of the knob is also provided with a plurality of spiral coils located around the first hole.

[0007] Preferably, a third hole is provided at the bottom of the knob, a plurality of protrusions are provided on the third hole, a convex bump is provided near the center of the protrusion, a fourth hole is provided on the bottom plate, and the convex bump passes through and abuts against the fourth hole.

[0008] Preferably, a plurality of through hole slots are provided on the inner wall of the knob, and limiting ribs are provided on both sides of the through hole slots.

[0009] Preferably, a groove 1 is provided between the base plate and the outer wall of the knob, and the groove 1 is used for snap-fitting the accessory.

[0010] Preferably, the filter plate is provided with four holes corresponding to the bottom plate, and the filter plate is also provided with two grooves.

[0011] Preferably, the outer wall of the knob is provided with a plurality of ribs, and the outer wall of the knob is also provided with an indication arrow.

[0012] The bottom of the knob is provided with a plurality of limit platforms of different sizes, and the bottom plate is provided with corresponding slots, and the slots are engaged with the limit platforms.

[0013] Compared with the prior art, the utility model provides the following beneficial effects:

[0014] A base plate is added to the knob to prevent severe wear on the bottom of the knob and to protect the bottom of the knob. The base plate can be replaced when necessary to increase the service life of the product. A protrusion is provided in the base to reduce friction with the mating parts by reducing friction, thereby improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 It is a cross-sectional view of an embodiment of the utility model.

[0017] Figure 2 It is a three-dimensional diagram of an embodiment of the utility model.

[0018] Figure 3 It is a three-dimensional diagram of a knob according to an embodiment of the utility model.

[0019] Reference numerals

[0020] 1-knob assembly; 2-knob; 21-hole one; 22-spiral layer; 23-hole three; 24-protrusion; 25-convex hull; 26-through hole groove; 27-limiting rib; 28-groove one; 29-convex rib; 210-indicating arrow; 211-limiting platform; 3-filter; 31-hole four; 32-groove two; 4-bottom plate; 41-hole two; 42-limiting platform; DETAILED DESCRIPTION

[0021] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0022] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0023] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] It should be noted that the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 device. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figures 1 to 3 As shown, it includes a knob assembly 1, and the knob assembly 1 includes a knob 2 and a filter 3. A bottom plate 4 is provided at the bottom of the knob 2, and the filter 3 is installed inside the knob 2; a plurality of holes 21 are provided at the bottom of the knob 2, and a second hole 41 is provided at the bottom of the bottom plate 4, and the second hole 41 coincides with one of the holes 21 to form a through hole state; a plurality of spiral layers 22 are also provided at the bottom of the knob 2, which are located around the hole 21. Specifically, the spiral layers 22 are provided at the bottom of the knob 2, thereby forming an uneven surface that fits the filter 3 and the bottom plate 4 respectively, thereby improving its sealing performance, wherein the filter 3 is made of metal.

[0028] A hole three 23 is provided at the bottom of the knob 2, and a plurality of protrusions 24 are provided on the hole three 23. A convex bump 25 is provided on the protrusion 24 near the center of the circle. A hole four 42 is provided on the bottom plate 4, and the convex bump 25 penetrates and abuts against the hole four 42, so that the position of the bottom plate 4 is limited by the convex bump 25. Furthermore, a counter accessory is penetrated at the protrusion of the hole three, and by providing a gear-shaped protrusion, the friction area between the counter accessory and the gear-shaped protrusion is reduced, thereby improving the stability of the product.

[0029] The inner wall of the knob 2 is provided with a plurality of through-hole grooves 26, and limiting ribs 27 are provided on both sides of the through-hole grooves 26. A groove 28 is provided between the bottom plate 4 and the outer wall of the knob 2, and the groove 28 is used for clamping the accessories. The bottom plate is used to protect the bottom of the knob to prevent serious wear of the bottom of the knob. The bottom plate can be replaced when necessary to increase the service life of the product.

[0030] The filter plate 3 is provided with a hole four 31 corresponding to the bottom plate 4, and the filter plate 3 is also provided with a groove two 32; the outer wall of the knob 2 is provided with a plurality of convex ribs 29 to increase the friction during rotation and avoid slipping; the outer wall of the knob is also provided with an indicator arrow 210, which can be used to indicate the state of the air delay head.

[0031] The bottom of the knob 2 is provided with a plurality of limit platforms 211 of different sizes, and the bottom plate 4 is provided with corresponding slots, which are engaged with the limit platforms 42. When the limit platforms 42 are inconsistent in size and cooperate with the slots, they play a fool-proof role to avoid the bottom plate 4 from being installed in the wrong position.

[0032] The preferred embodiments of the utility model of the above utility model are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-stability knob assembly for an air delay head, comprising a knob assembly, characterized in that: The knob assembly comprises a knob and a filter. A bottom plate is provided at the bottom of the knob, and the filter is installed inside the knob.

2. A high stability knob assembly for an air delay head as claimed in claim 1, characterized in that: The bottom of the knob is provided with a plurality of holes 1, the bottom plate is provided with hole 2, and the hole 2 overlaps with one of the holes 1 to form a through hole state.

3. A high stability knob assembly for an air delay head as claimed in claim 1, characterized in that: The bottom of the knob is also provided with a plurality of spiral coil layers, which are located around the first hole.

4. A high stability knob assembly for an air delay head as claimed in claim 1, characterized in that: A third hole is provided at the bottom of the knob, a plurality of protrusions are provided on the third hole, a convex bump is provided near the center of the protrusion, a fourth hole is provided on the bottom plate, and the convex bump passes through and abuts against the fourth hole.

5. A high stability knob assembly for an air delay head as claimed in claim 1, characterized in that: The inner wall of the knob is provided with a plurality of through hole slots, and limiting ribs are provided on both sides of the through hole slots.

6. A high stability knob assembly for an air delay head as claimed in claim 1, characterized in that: A groove one is provided between the bottom plate and the outer wall of the knob, and the groove one is used for clamping the fitting.

7. A high stability knob assembly for an air delay head as claimed in claim 1, characterized in that: The filter plate is provided with four holes corresponding to the bottom plate, and the filter plate is also provided with two grooves.

8. A high stability knob assembly for an air delay head as claimed in claim 1, characterized in that: The outer wall of the knob is provided with a plurality of convex ribs, and the outer wall of the knob is also provided with an indicating arrow.

9. A high stability knob assembly for an air delay head as claimed in claim 1, characterized in that: The bottom of the knob is provided with a plurality of limit platforms of different sizes, and the bottom plate is provided with corresponding slots, and the slots are engaged with the limit platforms.

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