CN215644255U

CN215644255U - Knob device

Info

Publication number: CN215644255U
Application number: CN202121213387.0U
Authority: CN
Inventors: 王全搌; 苗利恒; 刘武军; 李新洋
Original assignee: Hytera Communications Corp Ltd
Current assignee: Hytera Communications Corp Ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2022-01-25
Anticipated expiration: 2031-06-01

Abstract

The utility model relates to a knob device, which comprises a knob cap and a magnetic screw assembly; the magnetic screw assembly comprises a screw and a first magnet fixedly sleeved on the periphery of the screw; the knob cap is internally provided with an installation space for rotatably installing the magnetic screw assembly therein, the inner wall of the installation space extends to the axis to form a partition board, the partition board defines a first space and a second space in the installation space, and the second space is provided with a non-circular insertion hole for installing the switch rotating shaft therein; and an accommodating space is reserved between the magnetic screw assembly and the inner wall of the top of the knob cap. The magnetic screw is adopted, and the assembly and disassembly of the screw are realized by driving a magnet on the screw to rotate through the magnetic electric component. Both can use the firm fixed of screw, can not influence the outward appearance because of exposing, reduced the risk that the knob cap loses because of being extracted, reducible knob structure's complexity optimizes the product structure greatly.

Description

Knob device

Technical Field

The utility model relates to a knob switch device, in particular to a knob device which can be used for electronic products or professional communication equipment.

Background

The existing products equipped with the knob caps have the risk that the knob caps are pulled out and lost, or the appearance is influenced due to the fact that screws are exposed directly by using the screws for fixing, and meanwhile, the products have the risk of being detached by users. In the prior art, the function that the pull-out force of the knob cap is greater than the press-in force of the knob cap is mainly realized, but the structure still has the following defects:

1) the requirement on the precision of parts is high, and the pressing force is large;

2) the knob cap risks being pulled out.

Therefore, a fixing device of the knob cap is needed, which can be firmly fixed by using screws and cannot be exposed, the appearance is not affected, and a user cannot freely detach the knob cap.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a knob device.

The technical scheme adopted by the utility model for solving the technical problems is as follows: constructing a knob device comprising a knob cap and a magnetic screw assembly; the magnetic screw assembly comprises a screw and a first magnet fixedly sleeved on the periphery of the screw;

the knob cap is internally provided with an installation space for rotatably installing the magnetic screw assembly therein, the inner wall of the installation space extends to the axis to form a partition plate, the partition plate defines a first space and a second space in the installation space, and the second space is provided with a non-circular insertion hole;

and an accommodating space is reserved between the magnetic screw assembly and the inner wall of the top of the knob cap.

Preferably, the device further comprises a knob switch with a switch rotating shaft, and the knob switch can be matched to drive the knob cap to rotate;

the upper end of the switch rotating shaft is provided with a screw hole, and the magnetic screw assembly is sleeved on the upper end of the switch rotating shaft.

Preferably, the magnetic screw assembly further comprises a hollow cylindrical housing; the first end of the shell is provided with an opening, and the first magnet can be movably arranged in the first space; the screw is movably arranged in the first space and the second space in a penetrating mode, and the first magnet is sleeved on the periphery of the portion, located in the first space, of the screw.

Preferably, the first magnet is a hollow cylindrical magnet.

Preferably, the magnetic screw assembly further comprises a spring located between the knob cap top and the top radial face of the first magnet.

Preferably, a magnetic electric component is also included; internal threads are arranged on the inner wall surface of the screw hole; after the magnetic screw assembly is sleeved on the upper end part of the switch rotating shaft, the first magnet can be driven by the magnetic electric assembly to rotate, so that the screw is driven to rotate and be screwed in or out of the screw hole in the upper end part of the switch rotating shaft.

Preferably, the magnetic electric component comprises a second magnet and a control rotating shaft, the second magnet is arranged on the same horizontal line with the first magnet, and the second magnet is sleeved at the second end of the control rotating shaft.

Preferably, the first end of the control rotating shaft is connected with an electric tool for controlling the control rotating shaft.

Preferably, the power tool is an electric screwdriver.

Preferably, the cross section of the switch rotating shaft is of a D-shaped structure; the insertion hole of the second space is a D-shaped structure which is adapted to the switch rotating shaft.

The implementation of the utility model has the following beneficial effects: the magnetic screw is adopted, and the assembly and disassembly of the screw are realized by driving a magnet on the screw to rotate through the magnetic electric component. The knob cap fixing structure can be used for fixing a structure with the knob cap, can be firmly fixed by using screws and cannot be exposed, so that the appearance cannot be influenced, a user cannot freely detach the knob cap, the risk of losing the knob cap due to pulling out is reduced, the reliability is good, the complexity of the knob structure can be reduced, the universality of parts is enhanced, and the product structure is greatly optimized.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a cross-sectional view of a knob device of the present invention;

FIG. 2 is a cross-sectional view of the magnetic screw assembly of the knob device of the present invention;

FIG. 3 is an exploded view of the knob assembly of the present invention;

FIG. 4 is a schematic view of the knob device of the present invention;

FIG. 5 is a schematic view of the knob cap and knob cap housing of the knob device of the present invention;

fig. 6 is a schematic view showing a structure in which a magnetic screw assembly of the knob apparatus of the present invention is mounted to a knob cap.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it is to be understood that the orientations and positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inner", "outer", "leading", "trailing", and the like are configured and operated in specific orientations based on the orientations and positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate that the device or element referred to must have a specific orientation, and thus, are not to be construed as limiting the present invention.

It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the utility model. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

A preferred embodiment of the present invention is shown in fig. 1-6, and includes a knob cap 20 and a magnetic screw assembly 22.

As shown in fig. 1 and 5, a mounting space 201 for rotatably mounting the magnetic screw assembly 22 therein is provided in the knob cap 20, and the magnetic screw assembly 22 is fixed in the mounting space 201 of the knob cap body 20 by injection molding or heat-melting (press-fitting). A partition 2232 extends from the inner wall of the installation space 201 to the axis, the partition 2232 defines a first space 2233 and a second space 2234 in the installation space 201, and the second space 2234 is provided with a non-circular insertion hole. The shape of the insertion hole can not be a circular hole, and the shape can be set according to practical situations, for example, the insertion hole can be set to be a D-shaped insertion hole, so that the D-shaped insertion hole is conveniently adapted to the D-shaped structure of the switch rotating shaft 11 and is used for installation.

Further, the knob device further comprises a knob switch 10 having a switch rotating shaft 11, and the knob switch 10 is capable of cooperating to drive the knob cap 20 to rotate. The upper end of the switch shaft 11 is provided with a screw hole 111, and the magnetic screw assembly 22 is sleeved on the upper end of the switch shaft 11. The knob cap 20 is detachably connected with the switch rotating shaft 11 through a magnetic screw assembly 22.

Specifically, as shown in fig. 2, the magnetic screw assembly 22 includes a screw 221 and a first magnet 222 fixedly sleeved on an outer periphery of the screw 221. When the magnetic screw assembly 22 is fixed in the installation space 201, a receiving space 21 is left between the magnetic screw assembly and the inner wall of the top of the knob cap 20, and the receiving space is used for ensuring that the screw can freely rotate in the axial direction.

Further, in order to better match the rotation of the screw, the first magnet 222 is selected to be a hollow cylindrical magnet that fits the cross-sectional diameter of the screw 221. That is, the diameter of the hollow part at the center of the first magnet is equal to or slightly larger than the diameter of the cross section of the screw, so as to ensure that the screw can be arranged in the first magnet in a penetrating way. In this embodiment, the diameter of the hollow portion in the center of the first magnet is preferably equal to the diameter of the cross section of the screw, so that the linkage between the first magnet and the screw can be better realized.

Further, the magnetic screw assembly 22 further comprises a hollow cylindrical housing 223; an opening 2231 is formed in the center of the top of the first end of the shell 223 to form a semi-closed surface, the shape of the opening 2231 can be circular, and the diameter of the opening 2231 needs to be larger than the cross-sectional diameter of the screw 221 and smaller than the cross-sectional diameter of the shell 223 to ensure that the screw can freely rotate in the axial direction and that the first magnet 222 cannot fall out of the knob cap when moving in the shell 223; and the second end of the housing 223 is a complete opening in a D-shaped configuration. In some embodiments, the opening 2231 may be square, etc., to ensure that a screw, etc. can pass through the opening, without limitation. When the knob cap is disassembled, the second end of the screw 221 is screwed out of the switch rotating shaft 11, the first end of the screw 221 enters the accommodating space 21, and the accommodating space is used for ensuring that the screw has sufficient adjusting position space when screwed in and out, so that the screw 221 is prevented from being screwed out of the knob cap 20 and being damaged. The screw is hidden in the knob cap, so that the disassembly by a user is avoided, the structure is reliable, and the appearance is not influenced.

A partition 2232 extends from the inner wall of the housing 223 to the axial line, the partition 2232 defines a first space 2233 and a second space 2234 inside the housing 223, and the first magnet 222 is movably installed in the first space 2233; the screw 221 is movably disposed through the first space 2233 and the second space 2234, and the first magnet 222 is disposed around a portion of the screw 221 located in the first space 2233. Optionally, in some embodiments, the first magnet only needs to be sleeved on the periphery of the screw. Preferably, in this embodiment, the first magnet 222 is sleeved on a middle portion of the screw 221, which is beneficial for the first magnet to effectively control the screw. In some embodiments, the magnetic screw assembly 22 may be disposed directly above the partition 2232 on the inner wall of the installation space 201 without the housing 223. The purpose of the housing 223 is to facilitate the assembly and disassembly of the magnetic screw assembly 22 as a whole to a knob cap for servicing.

Further, the magnetic screw assembly 22 also includes a spring 224, the spring 224 being located between the top of the knob cap 20 and the top radial surface of the first magnet 222. The spring 224 primarily acts as an auxiliary force, and when the knob cap is assembled, the spring provides a downward pressure to the screw as the screw is driven by the first magnet, and the auxiliary screw is screwed into the screw hole of the switch shaft.

Further, as shown in fig. 2 and 4, the knob device further includes a magnetic electric component 30; the inner wall surface of the screw hole 111 is provided with internal threads 1111; the internal thread 1111 is provided corresponding to the external thread 2211 of the screw 221 of the magnetic screw assembly 22, and is threadedly coupled thereto.

After the magnetic screw assembly 22 is sleeved on the upper end portion of the switch shaft 11, the first magnet 222 can be driven by the magnetic electric assembly 30 to rotate, so as to drive the screw 221 to rotate and to screw into or screw out of the screw hole 111 on the upper end portion of the switch shaft 11. In some embodiments, the screw can be directly inserted into the clamping hole of the switch rotating shaft in an inserting mode. Optionally, the screw and the switch rotating shaft may be connected in other detachable manners, which is not described herein.

As shown in fig. 1, specifically, the magnetic electric component 30 includes a second magnet 31 and a control shaft 32, the second magnet 31 is disposed on the same horizontal line with the first magnet 222, and the second magnet 31 is sleeved on a second end of the control shaft 32.

Further, the second magnet 31 is a hollow cylindrical magnet to fit the cross-sectional size of the control shaft 32, and can be inserted therein.

Further, the first end of the control rotating shaft 32 is connected with an electric tool for controlling the control rotating shaft 32, and the control rotating shaft 32 is directly controlled by the electric tool, so that the second magnet 31 drives the first magnet 222 to rotate, and further drives the screw 221 to rotate and screw into or out of the screw hole 111 at the upper end of the switch rotating shaft 11.

Further, the electric tool for controlling the control shaft 32 is an electric screwdriver. In some embodiments, other power tools that can be connection controlled may be used. In other embodiments, the control shaft may be controlled or repaired by manual control, and specifically, a handle may be disposed at the first end of the control shaft 32 for control.

Further, as shown in fig. 6, the cross section of the switch rotating shaft 11 is a D-shaped structure; the insertion hole of the second space 2234 is a D-shaped structure adapted to the switch rotary shaft 11. In some embodiments, the shape of the switch shaft 11 may also be circular, oval or other shapes, and therefore, the second space 2234 may also be other shapes adapted to the switch shaft 11.

In this embodiment, when the knob cap 20 is assembled, the magnetic electric component 30 is used and rotates counterclockwise, so as to drive the first magnet 222 in the magnetic screw component 22 to rotate clockwise, and further drive the magnetic screw 221 to rotate and complete the matching with the screw hole on the knob switch 10; when the knob cap 20 is disassembled, the magnetic electric component 30 is rotated clockwise to drive the magnetic screw 11 in the magnetic screw component 221 to rotate counterclockwise, and further drive the screw 11 to rotate and complete the unscrewing action with the screw hole on the knob switch 10.

It is to be understood that the foregoing examples, while indicating the preferred embodiments of the utility model, are given by way of illustration and description, and are not to be construed as limiting the scope of the utility model; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.

Claims

1. A knob device, characterized by comprising a knob cap (20) and a magnetic screw assembly (22); the magnetic screw component (22) comprises a screw (221) and a first magnet (222) fixedly sleeved on the periphery of the screw (221);

the knob cap (20) is internally provided with an installation space (201) for rotatably installing the magnetic screw assembly (22) therein, a partition plate (2232) extends from the inner wall of the installation space (201) to the axial line, the partition plate (2232) limits a first space (2233) and a second space (2234) from the inside of the installation space (201), and the second space (2234) is provided with a non-circular insertion hole;

an accommodating space (21) is reserved between the magnetic screw assembly (22) and the inner wall of the top of the knob cap (20).

2. The knob device according to claim 1, further comprising a knob switch (10) having a switch shaft (11), wherein the knob switch (10) is adapted to rotate the knob cap (20);

the upper end of switch pivot (11) is equipped with screw hole (111), magnetic screw subassembly (22) cover is located switch pivot (11) upper end.

3. The knob device according to claim 1, wherein the magnetic screw assembly (22) further comprises a hollow cylindrical housing (223); an opening (2231) is formed in the first end of the shell (223), and the first magnet (222) can be movably arranged in the first space (2233); the screw (221) is movably arranged in the first space (2233) and the second space (2234) in a penetrating manner, and the first magnet (222) is sleeved on the periphery of the portion, located in the first space (2233), of the screw (221).

4. The knob device according to claim 2 or 3, wherein the first magnet (222) is a hollow cylindrical magnet.

5. The knob device according to claim 3, wherein the magnetic screw assembly (22) further comprises a spring (224), the spring (224) being located between a top of the knob cap (20) and a top radial surface of the first magnet (222).

6. The knob device according to claim 2, further comprising a magnetic and electric assembly (30); the inner wall surface of the screw hole (111) is provided with internal threads (1111); after the magnetic screw component (22) is sleeved on the upper end part of the switch rotating shaft (11), the first magnet (222) can be driven by the magnetic electric component (30) to rotate, and then the screw (221) is driven to rotate and is screwed into or out of the screw hole (111) on the upper end part of the switch rotating shaft (11).

7. The knob device according to claim 6, wherein the magnetic electric component (30) comprises a second magnet (31) and a control shaft (32), the second magnet (31) is disposed on the same horizontal line with the first magnet (222), and the second magnet (31) is sleeved on the second end of the control shaft (32).

8. The knob device according to claim 7, wherein a power tool for controlling the control rotating shaft (32) is connected to the first end of the control rotating shaft (32).

9. The knob device according to claim 8, wherein the power tool is a screwdriver.

10. The knob device according to claim 2, characterized in that the cross section of the switch rotating shaft (11) is in a D-shaped structure; the insertion hole of the second space (2234) is a D-shaped structure adapted to the switch rotating shaft (11).