CN216954907U

CN216954907U - Liquid crystal screen support for sensor and sensor comprising same

Info

Publication number: CN216954907U
Application number: CN202220112043.9U
Authority: CN
Inventors: 孙庆顺
Original assignee: Vitesco Automotive Changchun Co Ltd
Current assignee: Vitesco Automotive Changchun Co Ltd
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2022-07-12
Anticipated expiration: 2032-01-17

Abstract

The utility model relates to a liquid crystal screen support (30) for a sensor (100), comprising a bottom wall (31) and a side wall connected with the bottom wall, wherein the side wall is arranged around the bottom wall, the lower surface of the bottom wall is provided with a connecting structure (39) used for being connected with a printed circuit board (20) of the sensor, the side wall is provided with a holding structure used for holding a liquid crystal screen (60), and the bottom wall is provided with an opening (80) for light emitted by a light source (21) on the printed circuit board to pass through so as to irradiate the liquid crystal screen. According to the utility model, the liquid crystal screen is fixed in the sensor through the liquid crystal screen bracket, so that a user can directly obtain a detection result of the sensor from an electrical box of the sensor, and the convenience is improved. The utility model also relates to a sensor comprising the liquid crystal display screen bracket.

Description

Liquid crystal screen support for sensor and sensor comprising same

Technical Field

The utility model belongs to the technical field of sensors, and particularly relates to a liquid crystal display bracket for a sensor and the sensor comprising the liquid crystal display bracket.

Background

The high-temperature sensor can be used for detecting the temperature of tail gas of a vehicle and mainly comprises an electrical box and a probe connected with the electrical box, wherein the probe is arranged on an exhaust pipe and is used for being in direct contact with the tail gas to detect the temperature of the tail gas, and the electrical box is arranged in the area near an engine or a chassis. The electric box of the high-temperature sensor in the prior art is not provided with a liquid crystal screen usually, the result detected by the high-temperature sensor needs to be sent to a display screen of a vehicle center console through an ECU (electronic control Unit) for displaying, and a user cannot directly obtain the detected result from the high-temperature sensor, so that the user can obtain the detected result of the high-temperature sensor by observing the display screen inside a vehicle cab when the vehicle is overhauled. Therefore, there is a need to acquire the detection result thereof directly from the high temperature sensor itself.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to solve at least one aspect of the above-mentioned problems existing in the prior art.

According to one aspect of the utility model, a liquid crystal screen bracket for a sensor is provided, which is characterized in that the liquid crystal screen bracket comprises a bottom wall and a side wall connected with the bottom wall, the side wall is arranged around the bottom wall, the lower surface of the bottom wall is provided with a connecting structure used for being connected with a printed circuit board of the sensor, the side wall is provided with a holding structure used for holding a liquid crystal screen, and the bottom wall is provided with an opening through which light emitted by a light source on the printed circuit board passes to irradiate the liquid crystal screen.

According to a preferred embodiment of the present invention, the side wall includes two supporting walls and two stopper walls, the two supporting walls and the two stopper walls forming the holding structure, the two supporting walls are respectively disposed at both ends of the bottom wall in a first direction and are used for supporting the liquid crystal panel, and the two stopper walls are respectively connected to the two supporting walls and are used for limiting movement of the liquid crystal panel in a second direction perpendicular to the first direction.

According to a preferred embodiment of the present invention, the liquid crystal panel holder includes two of the openings, and the two openings are provided between the two support walls and the bottom wall or between the two stopper walls and the bottom wall.

According to a preferred embodiment of the utility model, the holding structure further comprises a stop arranged on top of one of the two supporting walls and a U-shaped structure arranged adjacent to the other of the two supporting walls and opposite to the stop, one arm of the U-shaped structure being connected to the two stopping walls by a connecting portion, the other arm of the U-shaped structure being free and limiting the movement of the liquid crystal panel in the first direction together with the stop.

According to a preferred embodiment of the present invention, the holding structure further includes a protrusion provided at a top portion of the stopper wall connected to the support wall and for restricting movement of the liquid crystal panel in a third direction perpendicular to the first direction and the second direction.

According to a preferred embodiment of the present invention, the lcd panel bracket is provided with a wire passage, so that the flexible flat cable of the lcd panel is connected to the printed circuit board through the wire passage.

According to a preferred embodiment of the present invention, the bottom wall includes a flat portion and downwardly bent portions respectively located at both ends of the flat portion in the first direction, and the opening is provided between the downwardly bent portion and the support wall.

According to a preferred embodiment of the present invention, the connection structure comprises a snap configured to snap-fit with a card slot provided on the printed circuit board.

According to the preferred embodiment of the present invention, the lower surface of the bottom wall is further provided with a positioning pin for positioning the liquid crystal display panel bracket.

According to a preferred embodiment of the utility model, the liquid crystal screen support is made of elastic plastic.

According to another aspect of the present invention, there is also provided a sensor, including a housing and a printed circuit board located in the housing, wherein the sensor further includes a liquid crystal panel and the liquid crystal panel holder as described above, the liquid crystal panel holder is configured to hold the liquid crystal panel, a window is disposed on a portion of the housing corresponding to the liquid crystal panel, the liquid crystal panel is connected to the printed circuit board by a flexible flat cable, and a light source is disposed on a portion of the printed circuit board corresponding to the opening of the liquid crystal panel holder.

According to a preferred embodiment of the present invention, the sensor further comprises a light guide plate located between the liquid crystal panel and the bottom wall of the liquid crystal panel holder, and an incident surface of the light guide plate is disposed opposite to the light source so as to guide the light emitted from the light source to the liquid crystal panel.

According to a preferred embodiment of the present invention, the shape of the light guide plate is adapted to the shape of the bottom wall of the liquid crystal panel holder.

According to a preferred embodiment of the present invention, the sensor further comprises a light mixing sheet located between the light guide plate and the liquid crystal panel, the light mixing sheet being held by the holding structure of the liquid crystal panel holder.

According to a preferred embodiment of the utility model, the window is closed by a plexiglas plate thermally riveted to the housing.

According to the preferred embodiment of the utility model, the liquid crystal screen is fixed in the sensor through the liquid crystal screen bracket, so that a user can directly acquire a detection result of the sensor from an electrical box of the sensor, and convenience is improved.

Drawings

The utility model is described in detail below by way of exemplary embodiments with reference to the accompanying drawings, in which:

fig. 1 is a plan view illustrating a sensor according to an exemplary embodiment of the present invention.

Fig. 2 is a longitudinal sectional view of an electrical box illustrating the sensor shown in fig. 1.

Fig. 3 is an exploded view of an electrical box showing the sensor shown in fig. 1.

Fig. 4 is a perspective view illustrating a liquid crystal panel holder for a sensor according to an exemplary embodiment of the present invention, viewed from the top.

Fig. 5 is a perspective view showing the liquid crystal panel holder for a sensor shown in fig. 4, viewed from the bottom.

Fig. 6 is a schematic view illustrating connection of a liquid crystal panel, a liquid crystal panel holder, and a printed circuit board according to an exemplary embodiment of the present invention.

Fig. 7 is a perspective view illustrating an electrical box of a sensor according to an exemplary embodiment of the present invention after a lower case is removed.

The figures are purely diagrammatic and not drawn to scale. They show only those parts which are necessary for clarifying the present invention, and other parts may be omitted or simply mentioned. The utility model may also comprise other components than those shown in the figures.

Detailed Description

A liquid crystal panel holder for a sensor and a sensor including the same according to embodiments of the present invention will be described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention to those skilled in the art. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. Furthermore, it should be understood that the utility model is not limited to specific described embodiments. Rather, it is contemplated that the utility model may be practiced with any combination of the following features and elements, whether or not they relate to different embodiments. Thus, the following features, embodiments and advantages are merely illustrative and should not be considered elements or limitations of the claims except where explicitly recited in a claim.

Fig. 1-3 illustrate a sensor 100 according to an exemplary embodiment of the present invention. The sensor 100 may be, for example, a high temperature sensor for detecting the temperature of the exhaust gas of a vehicle, and includes an electrical box 91 and a probe 90 connected to the electrical box 91, where the electrical box 91 includes a housing 10 and a printed circuit board 20 located in the housing 10. The housing 10 includes an upper housing 12 and a lower housing 11, and the upper housing 12 and the lower housing 11 are coupled together to define a receiving space 13 therein. The printed circuit board 20 is located in the accommodating space 13 and electrically connected to the probe 90.

The sensor 100 further includes a liquid crystal panel 60 and a liquid crystal panel holder 30 in the accommodating space 13, the liquid crystal panel 60 is connected to the printed circuit board 20 by a flexible flat cable 61, and the liquid crystal panel holder 30 is configured to hold the liquid crystal panel 60. A portion of the upper case 12 corresponding to the liquid crystal panel 60 is provided with a window 12a so that contents displayed on the liquid crystal panel 60 are viewed through the window 12 a. The printed circuit board 20 is provided thereon with a light source 21, the light source 21 being configured to provide backlight to the liquid crystal panel 60. The light source 21 may be, for example, an LED light source. Of course, the light source 21 may also be implemented using any alternative means known in the art or that may be suitable.

Fig. 4 and 5 show a liquid crystal screen holder 30 for a sensor 100 according to an exemplary embodiment of the present invention. The liquid crystal panel holder 30 includes a bottom wall 31 and

side walls

32a, 32b, 33a, 33b connected to the bottom wall 31, the

side walls

32a, 32b, 33a, 33b being disposed around the bottom wall 31 and extending upward substantially perpendicular to the bottom wall 31. The lower surface of the bottom wall 31 is provided with a connection structure 39 for connection with the printed circuit board 20. The bottom wall 31 is further provided with an opening 80, which opening 80 is provided for light emitted by the light source 21 on the printed circuit board 20 to pass through to illuminate the liquid crystal panel 60. The

side walls

32a, 32b, 33a, 33b are provided with holding structures for holding the liquid crystal panel 60.

As shown in fig. 4, 5 and 6, the

side walls

32a, 32b, 33a, 33b include two oppositely disposed supporting

walls

33a, 33b and two oppositely disposed stopping

walls

32a, 32b, the two supporting

walls

33a, 33b and the two stopping

walls

32a, 32b together form the holding structure, the two supporting

walls

33a, 33b are respectively disposed at both ends of the bottom wall 31 in the first direction X and are used for supporting the liquid crystal screen 60, and the two

stopping walls

32a, 32b are respectively connected with the two supporting

walls

33a, 33b and are used for limiting the movement of the liquid crystal screen 60 in the second direction Y perpendicular to the first direction X.

As shown in fig. 4 and 5, the liquid crystal panel holder 30 includes two openings 80, and the two openings 80 are provided between the two

support walls

33a, 33b and the bottom wall 31. Accordingly, two sets of light sources 21 are provided on the printed circuit board 20. Each opening 80 corresponds to a group of light sources 21. In an embodiment of the utility model, not shown, the two openings 80 can also be provided between the two

stop walls

32a, 32b and the bottom wall 31, or at any suitable position. Furthermore, the number of openings may also vary, for example one or more than two.

As shown in fig. 4, the holding structure further includes a stopper 34 and a U-shaped structure 35. The stopper 34 is disposed on top of one 33a of the two

support walls

33a, 33b and is offset in the first direction X relative to the support wall 33a away from the other support wall 33 b. The U-shaped structure 35 is disposed adjacent to the other support wall 33b of the two

support walls

33a, 33b and opposite to the stopper 34, one arm of the U-shaped structure 35 is connected to the two

stopper walls

32a, 32b by a connecting portion 36, and the other arm of the U-shaped structure 35 is free and cooperates with the stopper 34 to restrict the movement of the liquid crystal panel 60 in the first direction X. By providing a U-shaped configuration, a greater amount of deformation in the first direction X may be provided for assembling the liquid crystal panel 60 to the panel holder 30.

It should be noted that although two U-shaped structures 35 are shown in this embodiment, it should be understood that in other embodiments of the utility model, the number of U-shaped structures may be one or more. Furthermore, in other embodiments, the U-shaped structure may be replaced by a rod-shaped protrusion extending from the connecting portion 36 in the first direction X or other suitable structure.

As shown in fig. 4 and 6, the liquid crystal panel bracket 30 is provided with a wire passage H through which the flexible flat cables 61 of the liquid crystal panel 60 are connected to the printed circuit board 20. In this embodiment, the wire passage H is disposed between the two U-shaped structures 35, however, it should be noted that in other embodiments of the present invention, the wire passage H may be disposed at other positions of the liquid crystal panel bracket 30, such as on the

stop walls

32a and 32 b.

As shown in fig. 4, the holding structure further includes a protrusion 37, which is provided at a top portion of the

stopper walls

32a, 32b connected to the

support walls

33a, 33b, and serves to restrict movement of the liquid crystal panel 60 in a third direction Z perpendicular to the first direction X and the second direction Y.

As shown in fig. 4, the bottom wall 31 includes a flat portion 31a and downwardly bent portions 31b located at both ends of the flat portion 31a in the first direction X, respectively, wherein the

side walls

32a, 32b, 33a, 33b extend substantially perpendicular to the flat portion 31a of the bottom wall 31, and the opening 80 is provided between the downwardly bent portion 31b and the

support walls

33a, 33 b.

As shown in fig. 5 and 7, the connection structure 39 includes a snap configured to snap connect with a card slot 23 provided on the printed circuit board 20. It should be noted that, in other embodiments of the present invention, the connection structure may also adopt other connection manners, such as a bolt connection.

As shown in fig. 5 and 7, the lower surface of the bottom wall 31 is further provided with positioning pins 38 for positioning the liquid crystal panel holder 30, and the positioning pins 38 cooperate with the positioning holes 22 provided on the printed circuit board 20 to position the liquid crystal panel holder 30 at a proper position on the printed circuit board 20.

Preferably, the liquid crystal panel support 30 is made of elastic plastic. For example, the liquid crystal panel holder 30 may be integrally formed through an injection molding process in order to reduce manufacturing costs.

According to another aspect of the present invention, a sensor 100 is also provided. As shown in fig. 1 to 3, the sensor 100 includes a housing 10 and a printed circuit board 20 located inside the housing 10. The sensor 100 further includes a liquid crystal panel 60 and a liquid crystal panel holder 30 as described above, the liquid crystal panel holder 30 holding the liquid crystal panel 60, and the liquid crystal panel 60 being connected to the printed circuit board 20 by the flexible flat cable 61. A portion of the casing 10 corresponding to the liquid crystal panel 60 is provided with a window 12a so that the content displayed on the liquid crystal panel 60 is viewed through the window 12 a. The window 12a is closed by a plexiglas plate 70 heat-riveted to the housing 10. A portion of the printed circuit board 20 corresponding to the opening 80 of the liquid crystal panel holder 30 is provided with a light source 21 for providing a backlight to the liquid crystal panel 60.

As shown in fig. 2 and 3, the sensor 100 further includes a light guide plate 40 between the liquid crystal panel 60 and the bottom wall 31 of the liquid crystal panel holder 30. The incident surface of the light guide plate 40 is disposed opposite to the light source 21 so as to guide the light emitted from the light source 21 to the liquid crystal panel 60 to provide a backlight to the liquid crystal panel 60. As shown in fig. 2 and 3, the shape of the light guide plate 40 is adapted to the shape of the bottom wall 31 of the lcd panel holder 30, so that the sensor 100 is more compact.

As shown in fig. 2 and 3, the sensor 100 further includes a light mixing sheet 50 positioned between the light guide plate 40 and the liquid crystal panel 60. The light mixing sheet 50 is held by the holding structure of the liquid crystal panel holder 30. The light mixing sheet 50 can be made of frosted transparent PC material, for example. Of course, the light mixing sheet 50 may also be made of any material known in the art or that may be suitable.

According to the preferred embodiment of the utility model, the liquid crystal screen is fixed in the sensor through the liquid crystal screen bracket, so that a user can directly acquire the result detected by the sensor from the electrical box of the sensor, and the convenience is improved. Further, by feeding light from both sides of the light guide plate inserted in the two openings of the liquid crystal panel holder and further completely covering the light guide plate by the light mixing sheet held on the holding structure of the liquid crystal panel holder, it is possible to allow light emitted from the light source on the printed circuit board to more uniformly irradiate the liquid crystal panel.

The present invention has been described in detail above in connection with a high temperature sensor for detecting the temperature of exhaust gases from a vehicle. However, it is to be clearly understood that the sensor may be any other type of sensor.

Although the present invention has been described with reference to the preferred embodiments, it is not limited thereto. Various changes and modifications within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit and scope of the present invention, and therefore the scope of the present invention should be determined by that defined in the appended claims.

Claims

1. A liquid crystal screen support (30) for a sensor (100), characterized in that, the liquid crystal screen support (30) includes a bottom wall (31) and a side wall connected with the bottom wall (31), the side wall surrounds the bottom wall (31) and is provided, the lower surface of the bottom wall (31) is provided with a connecting structure (39) for being connected with a printed circuit board (20) of the sensor (100), the side wall is provided with a holding structure for holding a liquid crystal screen (60), the bottom wall (31) is provided with an opening (80) for light emitted by a light source (21) on the printed circuit board (20) to pass through to irradiate the liquid crystal screen (60).

2. LCD screen holder (30) according to claim 1, characterized in that the side walls comprise two supporting walls (33a, 33b) and two stop walls (32a, 32b), the two supporting walls (33a, 33b) and the two stop walls (32a, 32b) forming the holding structure, the two supporting walls (33a, 33b) being arranged at both ends of the bottom wall (31) in a first direction (X) respectively and being adapted to support the LCD screen (60), the two stop walls (32a, 32b) being respectively connected to the two supporting walls (33a, 33b) respectively and being adapted to limit the movement of the LCD screen (60) in a second direction (Y) perpendicular to the first direction (X).

3. LCD screen holder (30) according to claim 2, characterized in that the LCD screen holder (30) comprises two of the openings (80), the two openings (80) being arranged between the two support walls (33a, 33b) and the bottom wall (31) or between the two stop walls (32a, 32b) and the bottom wall (31).

4. The lcd panel holder (30) according to claim 2, wherein the holding structure further comprises a stopper (34) and a U-shaped structure (35), the stopper (34) being disposed on top of one of the two support walls (33a, 33b), the U-shaped structure (35) being disposed adjacent to the other of the two support walls (33a, 33b) and opposite to the stopper (34), one arm of the U-shaped structure (35) being connected to the two stopper walls (32a, 32b) by a connecting portion (36), the other arm of the U-shaped structure (35) being free and cooperating with the stopper (34) to limit the movement of the lcd panel (60) in the first direction (X).

5. LCD screen holder (30) according to claim 4, characterized in that the holding structure further comprises a protrusion (37), which protrusion (37) is provided at a top portion of the stop wall (32a, 32b) connecting with the support wall (33a, 33b) and serves to limit the movement of the LCD screen (60) in a third direction (Z) perpendicular to the first direction (X) and the second direction (Y).

6. The LCD panel holder (30) according to claim 4, wherein the LCD panel holder (30) is provided with a wire passage (H) so that the flexible flat cable (61) of the LCD panel (60) is connected to the printed circuit board (20) through the wire passage (H).

7. The screen holder (30) according to claim 2, wherein the bottom wall (31) includes a flat portion (31a) and downwardly bent portions (31b) respectively located at both ends of the flat portion (31a) in the first direction (X), and the opening (80) is provided between the downwardly bent portion (31b) and the support walls (33a, 33 b).

8. The lcd panel holder (30) according to claim 1, wherein the connecting structure (39) comprises a snap configured to snap-fit with a snap slot (23) provided on the printed circuit board (20).

9. The LCD panel holder (30) according to claim 1, wherein the bottom wall (31) is further provided with a positioning pin (38) on its lower surface for positioning the LCD panel holder (30).

10. LCD screen holder (30) according to one of claims 1 to 9, characterized in that the LCD screen holder (30) is made of elastic plastic.

11. A sensor (100), the sensor (100) comprising a housing (10) and a printed circuit board (20) located within the housing (10), characterized in that the sensor (100) further comprises a liquid crystal screen (60) and a liquid crystal screen support (30) according to any one of claims 1 to 10, the liquid crystal screen support (30) is used for holding the liquid crystal screen (60), a portion of the housing (10) corresponding to the liquid crystal screen (60) is provided with a window (12a), the liquid crystal screen (60) is connected with the printed circuit board (20) through a flexible flat cable (61), and a portion of the printed circuit board (20) corresponding to an opening (80) of the liquid crystal screen support (30) is provided with a light source (21).

12. A sensor (100) according to claim 11, wherein the sensor (100) further comprises a light guide plate (40) located between the liquid crystal panel (60) and the bottom wall (31) of the liquid crystal panel holder (30), an incident surface of the light guide plate (40) being arranged opposite to the light source (21) so as to guide light emitted by the light source (21) to the liquid crystal panel (60).

13. Sensor (100) according to claim 12, wherein the shape of the light guide plate (40) is adapted to the shape of the bottom wall (31) of the liquid crystal screen holder (30).

14. The sensor (100) of claim 12, wherein the sensor (100) further comprises a light mixing sheet (50) located between the light guide plate (40) and the liquid crystal screen (60), the light mixing sheet (50) being held by the holding structure of the liquid crystal screen holder (30).

15. A sensor (100) according to any one of claims 11 to 14, wherein the window (12a) is closed by a plexiglas plate (70) heat-riveted with the housing (10).