CN110939922B - Function selection module and measuring instrument - Google Patents
Function selection module and measuring instrument Download PDFInfo
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- CN110939922B CN110939922B CN201911188468.7A CN201911188468A CN110939922B CN 110939922 B CN110939922 B CN 110939922B CN 201911188468 A CN201911188468 A CN 201911188468A CN 110939922 B CN110939922 B CN 110939922B
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- light guide
- light
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/12—Combinations of only three kinds of elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/28—Structurally-combined illuminating devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Measuring Devices (AREA)
Abstract
The application belongs to the technical field of instrument equipment, in particular to a function selection module and a measuring instrument, the function selection module comprises a knob mechanism, a light guide mechanism and a luminous light source, the knob mechanism comprises a character display ring, a knob piece and a knob piece, the knob piece is arranged in the character display ring, the light guide mechanism comprises a light guide ring piece, a scattering light guide piece and a knob light guide piece, the light guide ring piece is annularly arranged on the knob piece, the scattering light guide piece comprises at least one arched light guide part, the arched light guide part is arranged corresponding to the bottom of the light guide ring piece, the knob light guide piece is embedded at the indicating end of the knob piece and is arranged corresponding to the light guide ring piece, the luminous light source is arranged corresponding to the bottom of the arched light guide part, the emitted light irradiates on the character display ring and the knob piece through the arched light guide part and the light guide ring piece, so that the illumination brightness of the character display ring and the indicating end of the knob piece is ensured, the structure complexity and the manufacturing cost of the function selection module are also obviously reduced, and the energy conservation of the light-emitting light source is effectively realized.
Description
Technical Field
The application belongs to the technical field of instrument equipment, especially relates to a function selection module and measuring instrument.
Background
In recent years, with the progress of technology, electronic instruments such as measuring instruments and meters have played a great role in electronic device detection owing to their abundant measurement functions. The shell of the measuring instrument is usually provided with a function selection module, and a display panel surface and a knob of the function selection module can be designed to be luminous to display in order to facilitate operation at night or under low-light conditions.
In the prior art, in order to ensure the display brightness, a light-emitting light source is usually provided for the knob separately to provide separate illumination for the knob, so that the display brightness of the knob is ensured, but the overall structural complexity and the manufacturing cost of the function selection module are also increased.
Content of application
An object of this application is to provide a function selection module and measuring instrument, aim at solving for among the prior art add luminous light source alone for the knob of function selection module and lead to the overall structure complexity and the technical problem that manufacturing cost increased of function selection module.
In order to achieve the purpose, the technical scheme adopted by the application is as follows: a function selection module comprises a knob mechanism, a light guide mechanism and a luminous light source, wherein the knob mechanism comprises a character display ring, a knob piece, the knob piece is arranged in the character display ring and can rotate along the circumferential direction of the character display ring, the light guide mechanism comprises a light guide ring piece, a scattering light guide piece and a knob light guide piece, the light guide ring piece is annularly arranged on the periphery of the knob piece and is arranged corresponding to the character display ring, the scattering light guide piece comprises at least one arched light guide part, the arched light guide part is arranged corresponding to the bottom of the light guide ring piece, the knob light guide piece is embedded in an indication end of the knob piece and is arranged corresponding to the light guide ring piece, and the luminous light source is arranged corresponding to the bottom of the arched light guide part.
Optionally, the light scattering and guiding member includes a plurality of arched light guiding portions, each arched light guiding portion is sequentially connected end to end in a ring manner and is disposed corresponding to the bottom of the light guiding ring member, the light emitting light source has a plurality of point light sources, each point light source corresponds to a connection portion of two adjacent arched light guiding portions, and a plurality of diffusion pattern points are arrayed on the top surface and the bottom surface of each arched light guiding portion.
Optionally, an optical refraction arc surface is formed on one side of the arched light guide portion facing the knob light guide member.
Optionally, the bottom of the joint of two adjacent arched light guide portions is provided with a containing groove for containing the corresponding point light source, two opposite inner side walls of the containing groove are inclined towards each other, and are both provided with light path diffusion teeth.
Optionally, a light diffusion sheet is attached to the top of the joint of two adjacent arched light guide portions.
Optionally, the light guide ring member includes an upper light guide ring, a light guide ring wall, and a lower light guide ring, the upper light guide ring is annularly disposed on the periphery of the knob member and is disposed corresponding to the bottom of the character display ring, the arched light guide portion is disposed corresponding to the bottom of the upper light guide ring, the upper end edge of the light guide ring wall is connected to the inner ring edge of the upper light guide ring, the lower end edge of the light guide ring wall is connected to the outer peripheral edge of the lower light guide ring, and the knob member is rotatably disposed in an area surrounded by the light guide ring wall and the lower light guide ring.
Optionally, the indication end of the knob member is provided with a pointing window for accommodating the knob light guide member, and one side of the pointing window facing the light guide ring wall is provided with a light guide notch.
Optionally, the inner wall of the pointing window is a light shielding wall.
Optionally, the light guide mechanism further comprises a light shielding ring, the light shielding ring is embedded at the joint of the upper light guide ring and the light guide ring wall, and the lower end edge of the light shielding ring is located above the light guide gap.
The beneficial effect of this application: the utility model provides a function selection module, the during operation, luminous light source's each point light source provides the illumination through light guide mechanism to knob mechanism's character display ring circle and rotating member, and then makes the operator can rotate the target position that the rotating member precision pointed the character display ring circle under night and shimmer environment. The light emitted by the luminous light source can be uniformly emitted in a scattering shape through the arched light guide part and then uniformly irradiated on the character display ring and the knob light guide part arranged at the indicating end of the knob part through the light guide ring part, so that the character display ring and the indicating end arranged at the knob part can be uniformly, accurately and fully illuminated, the structure complexity and the manufacturing cost of the function selection module are obviously reduced while the illumination brightness of the character display ring and the indicating end of the knob part is ensured, the illumination loss of the luminous light source is also reduced, the luminous light source can emit light with smaller power, and the energy conservation of the luminous light source is effectively realized.
Another technical scheme adopted by the application is as follows: a measuring instrument comprises the function selection module.
The measuring instrument that this application embodiment provided, owing to select the module including foretell function, and above-mentioned function selection module can also show to have reduced manufacturing cost when guaranteeing illumination brightness, has still realized energy saving and consumption reduction simultaneously, so also realized the reduction of measuring instrument manufacturing cost and energy consumption.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a measuring instrument provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a function selection module according to an embodiment of the present disclosure;
FIG. 3 is a cut-away view of a function selection module provided in an embodiment of the present application;
fig. 4 is an exploded schematic view of a function selecting module according to an embodiment of the present disclosure;
fig. 5 is a schematic structural view of a scattering light guide of the function selection module according to the embodiment of the present disclosure;
fig. 6 is another schematic structural view of a scattering light guide of the function selection module according to the embodiment of the present disclosure;
fig. 7 is a light path diagram of a scattering light guide of the function selection module according to the embodiment of the present application.
Wherein, in the figures, the respective reference numerals:
10-function selection module 11-knob mechanism 12-light guide mechanism
13-luminous light source 20-measuring instrument 21-shell
22-assembly gap 23-assembly annular step 24-assembly annular wall
111-character display ring 112-knob member 113-pointing window
114-light guide notch 115-reflection turntable 121-light guide ring piece
122-scattering light guide 123-knob light guide 124-arch light guide
125-diffusion pattern point 126-optical refraction cambered surface 127-containing groove
128-light path diffusion tooth 129-light diffusion sheet 130-shading ring
131-point light source 132-PCB 1211-upper light guide ring
1212-light guiding annular wall 1213-lower light guiding annular ring 1214-annular protrusion.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-7 are exemplary and intended to be used to illustrate the present application and should not be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
As shown in fig. 1 to 3, the present application provides a function selecting module 10, including a knob mechanism 11, a light guiding mechanism 12 and a light emitting source 13, where the knob mechanism 11 includes a character display ring 111, a knob member 112, and the knob member 112 is disposed in the character display ring and can rotate along a circumferential direction of the character display ring, the light guiding mechanism 12 includes a light guiding ring member 121, a scattering light guiding member 122 and a knob light guiding member 123, the light guiding ring member 121 is annularly disposed on an outer periphery of the knob member 112 and is disposed corresponding to the character display ring, the scattering light guiding member 122 includes at least one arched light guiding portion 124, the arched light guiding portion 124 is disposed corresponding to a bottom of the light guiding ring member 121, the knob light guiding member 123 is embedded in an indication end of the knob member 112 and is disposed corresponding to the light guiding ring member 121, and the light emitting source 13 is disposed corresponding to the bottom of the arched light guiding portion 124.
Optionally, the light emitting source 13 specifically includes a PCB circuit board 132 and a plurality of point light sources 131 disposed on the PCB circuit board 132, wherein each point light source 131 may be an LED light source. Meanwhile, the knob mechanism 11 further includes a reflective rotary table 115, the reflective rotary table 115 is rotatably disposed in the light guide ring member 121 and connected to the knob member 112, a lower end of the reflective rotary table 115 is rotatably connected to a related component of the external measuring instrument 20, and the knob member 112 is rotated along the circumferential direction of the character display ring by the reflective rotary table 115. The reflective turntable 115 may be a white plastic part to reflect light, and the light emitted from the auxiliary point light source 131 is reflected to the knob light guide 123.
The function selecting module 10 provided in the embodiments of the present application is further described below: in the function selecting module 10 provided in the embodiment of the present application, during operation, each point light source 131 of the light emitting source 13 provides illumination to the character display ring 111 and the rotating member of the knob mechanism 11 through the light guiding mechanism 12, so that an operator can rotate the rotating member to accurately point to a target position of the character display ring 111 at night and in a dim light environment. Since the light-scattering guide member 122 of the light guide mechanism 12 has at least one arched light guide portion 124, the light emitted by the light-emitting source 13 can be uniformly emitted in a scattered manner through the arched light guide portion 124, and then is uniformly irradiated on the character display ring 111 and the knob light guide member 123 disposed at the indication end of the knob member 112 through the light guide ring member 121, so that uniform, accurate and sufficient illumination of the character display ring 111 and the indication end disposed at the knob member 112 is realized, and thus while the illumination brightness of the character display ring 111 and the indication end of the knob member 112 is ensured, the structural complexity and the manufacturing cost of the function selection module 10 are also significantly reduced, the illumination loss of the light-emitting source 13 is also significantly reduced, so that the light-emitting source 13 can emit light with less power, and the energy saving of the light-emitting source 13 is effectively realized.
Optionally, the scattering light guide member 122 includes a plurality of arc light guide portions 124, each of the arc light guide portions 124 is sequentially connected end to end in a loop and disposed corresponding to the light guide ring member 121, the knob light guide member 123 is embedded in the indication end of the knob member 112 and disposed corresponding to the light guide ring member 121, the light emitting source 13 has a plurality of point light sources 131, and each point light source 131 corresponds to a connection portion of two adjacent arc light guide portions 124. Thus, the two adjacent arched light guide portions 124 form a Y-shaped light guide structure, light emitted from the point light source 131 can be emitted from between the two adjacent arched light guide portions 124, and a direct multi-branch light path structure formed by the Y-shaped light guide structure forms an accurate and uniform illumination range, thereby further significantly improving the uniformity of light irradiated on the character display ring 111 and the knob light guide member 123.
In other embodiments of the present application, as shown in fig. 5 and 6, the top and bottom surfaces of the arched light directing portions 124 are each arrayed with a plurality of diffusing dots 125. Specifically, by forming a plurality of diffusion pattern points 125 on the top surface and the bottom surface of the arched light guide portion 124, the light emitted from the arched light guide portion 124 can be more uniformly irradiated onto the light guide ring member 121 by the diffusion effect of the diffusion pattern points 125, and further more uniformly irradiated onto the character display ring 111 and the knob light guide member 123 by the light guide ring member 121.
In other embodiments of the present application, as shown in fig. 5, the side of the arched light guide portion 124 facing the knob light guide 123 is formed with an optical refraction arc surface 126. Specifically, an optical refraction arc surface 126 is formed on one side of the arched light guide portion 124 facing the knob light guide member 123, so that light emitted from the light source 13 can be directly irradiated on the knob light guide member 123 through the bifurcation refraction effect of the optical refraction arc surface 126, and further light supplement of the light irradiated on the knob light guide member 123 is realized, so that the knob light guide member 123 is sufficiently illuminated by the light, and further, the indication end of the knob member 112 is more clearly displayed under the noctilucent or low-light condition.
In other embodiments of the present application, as shown in fig. 5 to 7, a containing groove 127 for containing the corresponding point light source 131 is formed at the bottom of the connection portion of the two adjacent arched light guide portions 124, two opposite inner side walls of the containing groove 127 are disposed in an inclined manner toward each other, and both are provided with the light path diffusing teeth 128. Specifically, the bottom of the joint of the two adjacent arched light guide portions 124 is provided with the accommodating groove 127, so that the point light source 131 of the light source 13 can be accommodated in the accommodating groove 127 to be matched with the joint of the two adjacent arched light guide portions 124, and the light path diffusion teeth 128 are arranged on the two opposite inner side walls of the accommodating groove 127, so that the light path diffusion teeth 128 can uniformly diffuse the light emitted by the point light source 131 to the two arched light guide portions 124, thereby effectively preventing the over-bright and over-dark phenomena at the two sides of the point light source 131, and effectively ensuring the uniformity of the illumination coverage range of the light emitted by the point light source 131.
In other embodiments of the present application, as shown in fig. 6, a light diffusion sheet 129 is attached to the top of the joint of two adjacent arched light guide portions 124. Specifically, the light diffusion sheet 129 is attached to the top of the joint of the two adjacent arched light guide portions 124, so that the light diffusion sheet 129 can uniformly disperse the direct and upward light rays emitted from the point light source 131 at the bottom of the joint of the two adjacent arched light guide portions 124, and further prevent the direct light rays from forming bright spots on the character display ring 111 through the light guide ring member 121.
In other embodiments of the present application, as shown in fig. 3, the light guiding ring member 121 includes an upper light guiding ring 1211, a light guiding ring wall 1212 and a lower light guiding ring 1213, the upper light guiding ring 1211 is disposed around the periphery of the knob member 112 and corresponds to the bottom of the character display ring 111, the arched light guiding portion 124 is disposed corresponding to the bottom of the upper light guiding ring 1211, the upper end edge of the light guiding ring wall 1212 is connected to the inner ring edge of the upper light guiding ring 1211, the lower end edge of the light guiding ring wall 1212 is connected to the outer peripheral edge of the lower light guiding ring 1213, and the knob member 112 is rotatably disposed in the region surrounded by the light guiding ring wall 1212 and the lower light guiding ring 1213. Specifically, by disposing the upper light guiding ring 1211 of the light guiding ring member 121 corresponding to the character displaying ring 111 and disposing the knob member 112 to rotate in the area surrounded by the light guiding ring wall 1212 and the lower light guiding ring 1213, the light guiding range of the light guiding ring member 121 covers the character displaying ring 111 and the indicating end of the knob member 112, thereby providing effective light guiding illumination for the character displaying ring 111 and the knob light guiding member 123 disposed at the indicating end of the knob member 112.
In other embodiments of the present application, as shown in fig. 2 to 4, the indication end of the knob 112 is provided with a pointing window 113 for accommodating the knob light guide 123, and one side of the pointing window 113 facing the light guide ring wall 1212 is provided with a light guide notch 114. Specifically, the light guide notch 114 is disposed toward the light guide annular wall 1212, so that the light emitted from the point light source 131 can enter the knob light guide member 123 through the light guide notch 114 under the refraction effect of the arched light guide portion 124 and the light guide annular wall 1212, thereby realizing the illumination of the indication end of the knob member 112.
In other embodiments of the present application, the inner wall directed toward the window 113 is a light-blocking wall. Specifically, the inner wall of the directional window 113 is set as a light-shielding wall, which is equivalent to setting a light-shielding enclosure around the knob light guide 123, so that the light loss of the light entering the knob light guide 123 in the directional window 113 can be effectively reduced, so that as much light as possible is gathered on the knob light guide 123, and the light is emitted from the knob light guide 123 to illuminate the indicating end of the knob 112, thereby effectively improving the utilization rate of the light emitted by the point light source 131.
In other embodiments of the present application, as shown in fig. 3, the light guide mechanism 12 further includes a light shielding ring 130, the light shielding ring 130 is embedded at a connection portion of the upper light guide ring 1211 and the light guide ring wall 1212, and a lower edge of the light shielding ring 130 is located above the light guide gap 114. Specifically, the light shielding ring 130 is disposed at the joint of the upper light guide ring 1211 and the light guide ring wall 1212, so that the light shielding ring 130 can be attached to the inner edge of the character display ring 111, thereby preventing light leakage between the character display ring 111 and the knob member 112.
Optionally, a vertical dislocation butt joint design is adopted between the light shielding ring 130 and the knob light guide 123, and the lower edge of the light shielding ring 130 is located above the light guide notch 114, so as to prevent light from leaking out from the gap between the light guide notch 114 and the character display ring 111.
As shown in fig. 1 to 3, the embodiment of the present application further provides a measuring instrument 20, which includes the function selecting module 10. Specifically, an assembly notch 22 is formed in a casing 21 of the measuring instrument 20, an assembly annular step 23 is formed in the inner edge of the assembly notch 22, an assembly annular wall 24 is formed by downward protruding of the side wall of the assembly annular step 23, the outer edge of the character display annular ring 111 is arranged on the assembly annular step 23, the light guide annular ring 121 is embedded in the assembly notch 21, the outer edges of the light guide annular ring 121 and the scattering light guide piece 122 are both abutted to the assembly annular wall 24, an annular protrusion 1214 is formed by protruding of the outer edge of the light guide annular ring 121, an assembly annular groove is formed in the assembly annular wall 24, and the annular protrusion 1214 is embedded in the assembly annular groove. Thus, the cooperation of the annular protrusion 1214 and the assembly ring groove realizes on the one hand the stable assembly of the light guide ring member 121 with respect to the housing of the measuring instrument 20, and further realizes the stable assembly of the function selection module 10 in the measuring instrument 20, and the outer edges of the light guide ring member 121 and the scattering light guide member 122 are all abutted to the assembly ring wall 24.
The measuring instrument 20 provided by the embodiment of the application comprises the function selecting module 10, and the function selecting module 10 can ensure the illumination brightness, obviously reduce the manufacturing cost, simultaneously realize energy conservation and consumption reduction, and thus also realize the reduction of the manufacturing cost and the energy consumption of the measuring instrument 20.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.
Claims (8)
1. A function selection module is characterized in that: comprises a knob mechanism, a light guide mechanism and a light emitting source, wherein the knob mechanism comprises a character display ring, a knob piece, the knob piece is arranged in the character display ring, and can rotate along the circumferential direction of the character display ring, the light guide mechanism comprises a light guide ring piece, a scattering light guide piece and a knob light guide piece, the light guide ring piece is annularly arranged on the periphery of the knob piece, and is arranged corresponding to the character display ring, the scattering light guide part comprises at least one arched light guide part, the arched light guide part is arranged corresponding to the bottom of the light guide ring piece, the knob light guide part is embedded at the indicating end of the knob part, and is arranged corresponding to the light guide ring piece, the luminous light source is arranged corresponding to the bottom of the arched light guide part, the light emitted by the luminous light source is uniformly emitted in a scattering state through the arched light guide part and then is irradiated on the character display ring and the knob light guide part through the light guide ring piece;
the light scattering and guiding member comprises a plurality of arched light guiding parts, each arched light guiding part is sequentially connected end to end in a ring mode and is arranged corresponding to the bottom of the light guiding ring member, the light emitting light source is provided with a plurality of point light sources, each point light source corresponds to the joint of two adjacent arched light guiding parts, a plurality of diffusion pattern points used for dispersing light and enabling the light to be uniformly irradiated to the light guiding ring member are arrayed on the top surface and the bottom surface of each arched light guiding part, an optical refraction arc surface is formed on one side, facing the knob light guiding member, of each arched light guiding part, and the light of the light emitting light source is directly irradiated to the knob light guiding member through the optical refraction arc surface.
2. The function selection module of claim 1, wherein: the bottom of the joint of two adjacent arched light guide parts is provided with a containing groove for containing the corresponding point light source, two opposite inner side walls of the containing groove are inclined towards each other, and are both provided with light path diffusion teeth.
3. The function selection module of claim 1, wherein: and light diffusion sheets are attached to the tops of the joints of the two adjacent arched light guide parts.
4. The function selection module according to any one of claims 1 to 3, wherein: the light guide ring piece comprises an upper light guide ring, a light guide ring wall and a lower light guide ring, the upper light guide ring is annularly arranged on the periphery of the knob piece and corresponds to the bottom of the character display ring, the arched light guide part corresponds to the bottom of the upper light guide ring, the upper end edge of the light guide ring wall is connected with the inner ring edge of the upper light guide ring, the lower end edge of the light guide ring wall is connected with the outer peripheral edge of the lower light guide ring, and the knob piece is rotatably arranged in an area formed by the light guide ring wall and the lower light guide ring in an enclosing mode.
5. The function selection module of claim 4, wherein: the indicating end of the knob piece is provided with a pointing window for containing the knob light guide piece, and one side of the pointing window, which faces the light guide ring wall, is provided with a light guide notch.
6. The function selection module of claim 5, wherein: the inner wall of the pointing window is a shading wall surface.
7. The function selection module of claim 5, wherein: the light guide mechanism further comprises a shading ring, the shading ring is embedded at the joint of the upper light guide ring and the light guide ring wall, and the lower end edge of the shading ring is located above the light guide notch.
8. A measuring instrument, characterized by: comprising a function selection module according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911188468.7A CN110939922B (en) | 2019-11-28 | 2019-11-28 | Function selection module and measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911188468.7A CN110939922B (en) | 2019-11-28 | 2019-11-28 | Function selection module and measuring instrument |
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| Publication Number | Publication Date |
|---|---|
| CN110939922A CN110939922A (en) | 2020-03-31 |
| CN110939922B true CN110939922B (en) | 2021-09-21 |
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| CN204084199U (en) * | 2014-08-27 | 2015-01-07 | Tcl通力电子（惠州）有限公司 | Annular leaded light component and guiding device |
| CN207798917U (en) * | 2017-10-16 | 2018-08-31 | 深圳市华谊智测科技股份有限公司 | digital multimeter |
| CN208888412U (en) * | 2018-10-31 | 2019-05-21 | 佛山市顺德区美的电热电器制造有限公司 | Light guide ring, control case assembly and household electrical appliance |
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