CN211527449U

CN211527449U - Measuring instrument

Info

Publication number: CN211527449U
Application number: CN201922116442.3U
Authority: CN
Inventors: 钟孝条
Original assignee: Shenzhen Everbest Machinery Industry Co ltd
Current assignee: Shenzhen Everbest Machinery Industry Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-09-18
Anticipated expiration: 2029-11-28

Abstract

The utility model belongs to the technical field of instrumentation, especially, relate to a measuring instrument, including casing and function selection module, the assembly breach is established to the casing, the assembly ring rank is established to assembly breach inward flange, the assembly ring rank forms the assembly rampart downwards, the function selection module includes knob mechanism, leaded light mechanism and luminous light source, knob mechanism includes character display ring circle and knob spare, the outward flange of character display ring circle sets up on the assembly ring rank, leaded light mechanism includes leaded light ring spare, scattering leaded light spare and knob leaded light spare, leaded light ring spare inlays to be located in the assembly breach, leaded light ring spare and scattering leaded light spare's outward flange all with assembly rampart looks butt. The assembly rampart can play the enclosure effect like this, prevents that light that leaded light ring spare and scattering leaded light spare sent from character display ring circle and the inward flange of assembling the breach to spill, and then has guaranteed measuring instrument's messenger's articles for use feel.

Description

Measuring instrument

Technical Field

The application belongs to the technical field of instrument equipment, and particularly relates to a 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.

Among the prior art, the module is selected to measuring instrument box function when the assembly, often has the fit-up gap between measuring instrument's casing and the module is selected to the function, and the light that can lead to the function to select the module to send like this can spill from fit-up gap department, so just reduced measuring instrument's quality feel.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a measuring instrument, aim at solving the light that the function selection module among the prior art sent and can spill from the casing of measuring instrument and the fitting gap department between the function selection module, reduce measuring instrument's the technical problem of article feel.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: a measuring instrument comprises a shell and a function selection module, wherein an assembly notch is formed in the shell, an assembly ring step is formed in the inner edge of the assembly notch, the side wall of the assembly ring step protrudes downwards to form an assembly ring wall, the function selection module comprises a knob mechanism, a light guide mechanism and a light emitting source, the knob mechanism comprises a character display ring and 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 outer edge of the character display ring is arranged on the assembly ring step, 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 arranged on the periphery of the knob piece in a surrounding mode and corresponds to the character display ring, the scattering light guide piece is arranged corresponding to the lower portion of the light guide ring, and the light emitting source is arranged corresponding to the lower portion of the scattering light guide piece, the knob light guide part is embedded in the indicating end of the knob part and arranged corresponding to the light guide ring part, the light guide ring part is embedded in the assembly notch, and the outer edges of the light guide ring part and the scattering light guide part are abutted to the assembly ring wall.

Optionally, the scattering light guide part includes at least one arched light guide portion, the arched light guide portion is disposed corresponding to the bottom of the light guide ring, and the light emitting source is disposed corresponding to the bottom of the arched light guide portion.

Optionally, the scattering light guide member includes a plurality of arch light guide portions, each arch light guide portion is sequentially connected end to end in a ring shape and is disposed corresponding to the light guide 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 arch light guide portions, and a plurality of diffusion pattern points are arrayed on the top surface and the bottom surface of each arch light guide 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 measuring instrument, through set up the assembly breach on its casing, and the assembly ring rank has been seted up to the inward flange at the assembly breach, the lateral wall of assembly ring rank is the protruding assembly rampart that is formed with of going down, and make the outward flange of character display ring circle set up on the assembly ring rank, the leaded light ring spare then inlays to be located in the assembly breach, and the outward flange of leaded light ring spare and scattering leaded light spare all with assembly rampart looks butt, the assembly rampart can play the enclosure effect like this, the light that prevents leaded light ring spare and scattering leaded light spare to send leaks from the inward flange of character display ring circle and assembly breach, and then guaranteed measuring instrument's messenger's articles for use feel.

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 embodiment of the present application provides a measuring instrument 20, which includes a housing 21 and a function selecting module 10, wherein an assembly notch 22 is formed on the housing of the measuring instrument 20, an assembly step 23 is formed on an inner edge of the assembly notch 22, a side wall of the assembly step 23 protrudes downward to form an assembly ring wall 24, the function selecting module 10 includes a knob mechanism 11, a light guide mechanism 12 and a light emitting source 13, the knob mechanism 11 includes a character display ring 111, a knob member 112, the knob member 112 is disposed in the character display ring 111 and can rotate along a circumferential direction of the character display ring, the light guide mechanism 12 includes a light guide ring member 121, a scattering light guide member 122 and a knob light guide member 123, the light guide ring member 121 is annularly disposed on an outer periphery of the knob member 112 and is disposed corresponding to the character display ring 111, an outer edge of the character display ring 111 is disposed on the assembly step 23, the scattering light guide member 122 is disposed corresponding to a lower, the light emitting source 13 is disposed below the scattering light guide 122, the light guide ring 121 is embedded in the assembly notch 22, and the outer edges of the light guide ring 121 and the scattering light guide 122 are both abutted to the assembly annular wall 24.

Optionally, the scattering light guide 122 includes at least one arched light guide portion 124, the arched light guide portion 124 is disposed corresponding to the bottom of the light guide ring 121, and the light emitting source 13 is disposed corresponding to the bottom of the arched light guide portion 124.

Further, the scattering light guide member 122 includes a plurality of arch light guide portions 124, each arch light guide portion 124 is sequentially connected end to end in a ring manner and is disposed corresponding to the bottom of the light guide ring member 121, the knob light guide member 123 is embedded in the indication end of the knob member 112 and is 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 arch light guide portions 124. Thus, the two adjacent arched light guide portions 124 form a Y-shaped light guide structure, the light emitted from the point light source 131 can be emitted from between the two adjacent arched light guide portions 124, and the direct multi-branch optical path structure formed by the Y-shaped light guide structure forms an accurate and uniform illumination range, thereby significantly improving the uniformity of the light irradiated on the character display ring 111 and the knob light guide 123.

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 dial 115, the reflective dial 115 is rotatably disposed in the light guide ring member 121 and connected to the knob member 112, a lower end of the reflective dial 115 is rotatably connected to a related part of the housing 21 of the measuring instrument 20, and the knob member 112 is rotated in a circumferential direction of the character display ring by the reflective dial 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 outer edge of the character display ring 111 is arranged on the assembly ring step 24, the light guide ring piece 121 is embedded in the assembly notch 22, and the outer edges of the light guide ring piece 121 and the scattering light guide piece 122 are respectively abutted against the assembly ring wall 24.

Optionally, an annular protrusion 1214 is convexly formed on the outer edge of the light guide ring member 121, the assembly annular wall 24 is provided with an assembly annular groove, and the annular protrusion 1214 is embedded in the assembly annular groove. In this way, the engagement of the annular projection 1214 and the mounting ring groove on the one hand enables a secure mounting of the light-guiding ring element 121 relative to the housing 21 of the measuring device 20.

The following further illustrates the measuring instrument provided in the examples of the present application: the measuring instrument 20 provided by the embodiment of the application, through set up the assembly breach 22 on its casing 21, and set up the assembly ring rank 23 at the inward flange of assembly breach 22, the lateral wall of assembly ring rank 23 is protruding downwards and is formed with the assembly rampart 24, and make the outward flange of character display ring 111 set up on the assembly ring rank 23, light guide ring 121 then inlays and locates in the assembly breach 22, and the outward flange of light guide ring 121 and scattering leaded light piece 122 all with assembly rampart 24 looks butt, the assembly rampart 24 can play the enclosure effect like this, prevent that the light that light guide ring 121 and scattering leaded light piece 122 sent from the inward flange of character display ring 111 and assembly breach 22 to spill, and then guaranteed measuring instrument 20's messenger articles for use.

Optionally, as shown in fig. 5-7, the top and bottom surfaces of the arched light guides 124 are 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 and fig. 6, a receiving groove 127 for receiving the corresponding point light source 131 is formed at the bottom of the joint of the two adjacent arched light guide portions 124, two opposite inner sidewalls of the receiving 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.

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

1. A measuring instrument, characterized by: the character display module comprises a shell and a function selection module, wherein an assembly notch is formed in the shell, an assembly annular step is formed in the inner edge of the assembly notch, an assembly annular wall is formed by downward protruding of the side wall of the assembly annular step, the function selection module comprises a knob mechanism, a light guide mechanism and a light emitting source, the knob mechanism comprises a character display annular ring and a knob piece, the knob piece is arranged in the character display annular ring and can rotate along the circumferential direction of the character display annular ring, the outer edge of the character display annular ring is arranged on the assembly annular step, 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 corresponds to the character display annular ring, the scattering light guide piece is arranged corresponding to the lower part of the light guide ring, and the light emitting source is arranged corresponding to the lower part of the scattering light, the knob light guide part is embedded in the indicating end of the knob part and arranged corresponding to the light guide ring part, the light guide ring part is embedded in the assembly notch, and the outer edges of the light guide ring part and the scattering light guide part are abutted to the assembly ring wall.

2. The measuring instrument according to claim 1, characterized in that: 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, and the luminous light source is arranged corresponding to the bottom of the arched light guide part.

3. The measuring instrument according to claim 1, characterized in that: the scattering light guide part comprises a plurality of arched light guide parts, each arched light guide part is sequentially connected end to end in a ring mode and arranged corresponding to the light guide ring piece, the luminous light source is provided with a plurality of point light sources, each point light source corresponds to the joint of two adjacent arched light guide parts, and a plurality of diffusion pattern points are arrayed on the top surface and the bottom surface of each arched light guide part.

4. The measuring instrument according to claim 2, characterized in that: and an optical refraction arc surface is formed on one side of the arched light guide part facing the knob light guide part.

5. A measuring instrument according to claim 3, characterized in that: 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.

6. A measuring instrument according to claim 3, characterized in that: and light diffusion sheets are attached to the tops of the joints of the two adjacent arched light guide parts.

7. The measuring instrument according to claim 2, characterized in that: 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.

8. The measuring instrument according to claim 7, characterized in that: 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.

9. The measuring instrument according to claim 8, characterized in that: the inner wall of the pointing window is a shading wall surface.

10. The measuring instrument according to claim 8, characterized in that: 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.