CN210071162U

CN210071162U - Temperature measuring device and push rod resetting mechanism thereof

Info

Publication number: CN210071162U
Application number: CN201921047189.4U
Authority: CN
Inventors: 申超; M·利马; 艾平
Original assignee: Changsha Millet Intelligent Technology Co Ltd
Current assignee: Changsha Millet Intelligent Technology Co Ltd
Priority date: 2019-07-06
Filing date: 2019-07-06
Publication date: 2020-02-14
Anticipated expiration: 2029-07-06

Abstract

The utility model discloses a temperature measuring device and push rod canceling release mechanical system thereof, push rod canceling release mechanical system include the bottom plate, be provided with on the bottom plate and arrange two rows of reference columns that the symmetry set up along push rod length direction, be provided with between two rows of reference columns and follow the gliding leading truck of push rod length direction on the bottom plate, be provided with torsion spring on the leading truck, torsion spring has two free ends, two free ends respectively with the reference column looks butt that corresponds in two rows of reference columns, under torsion spring's effect, the one end of leading truck with the outer end looks butt of push rod. The utility model discloses a torsion spring's canceling release mechanical system, it acts on leading truck and push rod and makes it reset, and return speed is very fast, is favorable to shortening measuring time. The utility model also discloses a temperature measuring device.

Description

Temperature measuring device and push rod resetting mechanism thereof

Technical Field

The utility model belongs to the technical field of temperature measurement, concretely relates to temperature measuring device and push rod canceling release mechanical system thereof.

Background

At present, body temperature measuring equipment mainly comprises a physical thermometer and a digital thermometer, wherein the physical thermometer mainly comprises a mercury thermometer, an alcohol thermometer and the like, and the digital thermometer mainly comprises an infrared body temperature gun, a thermocouple digital display thermometer and the like.

Among the thermometers, the physical thermometer has been widely accepted due to its low cost and high accuracy, but the physical thermometer has a long measurement time and a great limitation in digital application. Although the digital thermometer has great progress in convenience of use and expansibility of digital application, the measurement accuracy of the digital thermometer is not satisfactory because of being susceptible to environmental factors.

In the related art, there is a temperature measuring device that uses a mechanical mechanism to detect the volume change of a temperature measuring fluid medium so as to obtain a temperature signal, which has an advantage of being not easily affected by environmental factors, but the mechanical mechanism only relies on the action of atmospheric pressure to return a push rod of the mechanical mechanism when the volume of the temperature measuring fluid medium shrinks, and the return speed is slow, resulting in a longer measuring time.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a temperature measuring device and push rod canceling release mechanical system thereof.

The purpose of the utility model is realized through the following technical scheme:

on the one hand, the utility model provides a temperature measuring device's push rod canceling release mechanical system for the reseing of push rod, comprising a base plate, be provided with on the bottom plate and arrange two rows of reference columns that the symmetry set up along push rod length direction, be provided with between two rows of reference columns and follow the gliding leading truck of push rod length direction on the bottom plate, be provided with torsion spring on the leading truck, torsion spring has two free ends, two free ends respectively with the reference column looks butt that corresponds in two rows of reference columns, under torsion spring's effect, the one end of leading truck with the outer end looks butt of push rod.

As a further improvement, the number of the torsion springs is multiple, the torsion springs are distributed at intervals along the length direction of the guide frame, and two free ends of each torsion spring are respectively abutted with one corresponding positioning column in the two rows of positioning columns.

As a further improvement, the whole guide frame is I-shaped, and the vertical edge of the guide frame is arranged between the two rows of positioning columns.

As a further improvement, a guide frame limiting block for limiting the guide frame to slide to a preset position towards the outer end is arranged on the bottom plate, and the guide frame limiting block is abutted to the transverse edge of the guide frame.

The utility model provides a temperature measuring device's push rod canceling release mechanical system for the reseing of push rod, comprising a base plate, be provided with on the bottom plate and arrange two rows of reference columns that the symmetry set up along push rod length direction, be provided with between two rows of reference columns and follow the gliding leading truck of push rod length direction on the bottom plate, be provided with torsion spring on the leading truck, torsion spring has two free ends, two free ends respectively with the reference column looks butt that corresponds in two rows of reference columns, under torsion spring's effect, the one end of leading truck with the outer end looks butt of push rod. The utility model discloses a torsion spring's canceling release mechanical system, it acts on leading truck and push rod and makes it reset, and return speed is very fast, is favorable to shortening measuring time.

On the other hand, the utility model also provides a temperature measuring device, which comprises a container shell, wherein a containing cavity is formed inside the container shell, the containing cavity is filled with temperature measuring fluid medium, the container shell is provided with a push rod cylinder cavity with the inner end communicated with the containing cavity and the outer end communicated with the outside, a push rod capable of moving along the axial direction of the push rod cylinder cavity is arranged in the push rod cylinder cavity, the periphery of the inner end of the push rod is in sliding sealing fit with the wall surface of the push rod cylinder cavity, the push rod is connected with a displacement sensor for detecting the displacement of the push rod, the displacement sensor is connected with a temperature conversion module for converting the displacement into a temperature change signal, the temperature conversion module is connected with a temperature output module for outputting temperature signals and also comprises the push rod resetting mechanism, the container shell is fixed on the bottom plate, and the outer end of the push rod is abutted to the guide frame.

The utility model provides a temperature measuring device is owing to be provided with above-mentioned push rod canceling release mechanical system, and it has corresponding beneficial effect, consequently no longer carries out detailed description.

Drawings

The present invention is further explained by using the drawings, but the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to the following drawings without any inventive work.

Fig. 1 is a schematic view of the installation structure of the bottom plate and the positioning column of the push rod resetting mechanism of the present invention.

Fig. 2 is a schematic view of the installation structure of the guide frame and the torsion spring of the push rod resetting mechanism of the present invention.

Fig. 3 is a schematic structural diagram of the temperature measuring device of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, and it should be noted that the embodiments and features of the embodiments of the present invention can be combined with each other without conflict.

Combine fig. 1 to fig. 3 to show, the embodiment of the utility model provides a temperature measuring device's push rod canceling release mechanical system for the restoration of push rod, comprising a base plate 1, be provided with on the bottom plate 1 and arrange two rows of reference columns 2 that the symmetry set up along push rod length direction, be provided with between two rows of reference columns 2 and follow the gliding leading truck 3 of push rod length direction on bottom plate 1, leading truck 3 wholly is "worker" font, the perpendicular limit setting of leading truck 3 is between two rows of reference columns 2. The bottom plate 1 is provided with a guide frame limiting block 5 for limiting the guide frame 3 to slide to a preset position from the outer end, and the guide frame limiting block 5 is abutted to the transverse edge of the guide frame 3. The guide frame 3 is provided with a torsion spring 4, the torsion spring 4 is provided with two free ends, the guide frame 3 is provided with a mounting column 13, the torsion spring 4 is sleeved on the mounting column 13, the two free ends of the torsion spring 4 are respectively abutted with one corresponding positioning column in the two rows of positioning columns 2, and under the action of the torsion spring, one end of the guide frame 3 is abutted with the outer end of the push rod. The utility model discloses a torsion spring's canceling release mechanical system, it acts on leading truck and push rod and makes it reset, and return speed is very fast, is favorable to shortening measuring time.

As a further preferred embodiment, the torsion spring 4 is plural, the plural torsion springs 4 are distributed at intervals along the length direction of the guide frame 3, and two free ends of each torsion spring 4 are respectively abutted with a corresponding positioning column in the two rows of positioning columns 2. The embodiment of the utility model provides an adopt a plurality of torsion spring's canceling release mechanical system, can make the elasticity restoring force that acts on leading truck and push rod more balanced, like this, the change of temperature can make the temperature measurement fluid medium produce the volume proportion change that expend with heat and contract with cold effect and lead to more linear, and the measuring result is more accurate.

As shown in fig. 3, the embodiment of the present invention further provides a temperature measuring device, which includes a container shell 6, an accommodating cavity 7 is formed inside the container shell 6, and a temperature measuring fluid medium is filled in the accommodating cavity 7. The container shell is made of metal, the preferable material is alloy steel with high heat conduction efficiency such as stainless steel, and the heat conductivity of the metal material is far greater than that of glass, so that efficient heat conduction can be realized, and rapid measurement is guaranteed. The main body of the container shell is in a flat hexahedron shape, preferably in a flat cuboid structure, so that the contact area with a measured object is increased as much as possible under the same volume, and the heat conduction efficiency is improved. The container shell is internally provided with a heat conduction grid, the heat conduction grid divides the containing cavity into a plurality of sub-containing cavities which are communicated with each other, the grid is formed in the container shell, the heat conduction rate can be further increased, meanwhile, the heat conduction grid structure can enhance the rigidity of the container, and the structural safety is further improved. The temperature measuring fluid medium filled in the cavity 2 is liquid metal or liquid metal alloy, such as mercury or gallium-indium alloy, and the thermal volume expansion coefficient of the liquid metal is extremely stable in a common temperature range, so that the measurement precision can be ensured. The container shell 6 is provided with a push rod barrel cavity 8, the inner end of the push rod barrel cavity 8 is communicated with the containing cavity 7, the outer end of the push rod barrel cavity 8 is communicated with the outside, a push rod 9 capable of axially moving along the push rod barrel cavity 8 is arranged in the push rod barrel cavity 8, the periphery of the inner end of the push rod 9 is in sliding sealing fit with the wall surface of the push rod barrel cavity 8, and the push rod 9 is connected with a push rod resetting mechanism enabling the push rod 9 to move towards the inner end and a displacement sensor 10 used for detecting the displacement of. The push rod resetting mechanism is the push rod resetting mechanism in the embodiment. The container shell is fixed on the bottom plate 1, and the outer end of the push rod 9 is abutted to the guide frame 3. The displacement sensor 10 is connected with a temperature conversion module 11 for converting displacement into a temperature change signal, the temperature conversion module 11 is connected with a temperature output module 12 for outputting a temperature signal, the displacement sensor 10, the temperature conversion module 11 and the temperature output module 12 are connected with a power supply 14, and the power supply 14 supplies power to the displacement sensor 10, the temperature conversion module 11 and the temperature output module 12. Wherein, the temperature output module 12 can be a display such as a dot matrix LED screen or a liquid crystal screen to display the temperature; the temperature output module can also be a voice prompt such as a loudspeaker to carry out voice broadcast temperature, and the temperature output module 12 can also send the temperature signal to third-party equipment in a wireless transmission mode.

The temperature measuring device of this embodiment is at the during operation, because the change of temperature can make temperature measurement fluid medium produce expend with heat and contract with cold effect, when the volume expansion of temperature measurement fluid medium, the push rod is released through push rod barrel chamber to temperature measurement fluid medium, when the volume shrink of temperature measurement fluid medium, elasticity canceling release mechanical system makes the push rod retract, the change of temperature can make the push rod produce corresponding displacement change like this, the displacement volume of rethread displacement sensor accurate detection push rod, the temperature conversion module turns into the temperature change signal with the displacement volume, rethread temperature output module output temperature signal. The utility model provides a temperature measuring device adopts mechanical type mechanism to detect the volume change of temperature measurement fluid medium to acquire temperature signal, be difficult for receiving the environmental factor influence, the stable performance, the reliability is high, and the security is high.

In a further preferred embodiment, the displacement sensor 10 is a capacitive grating sensor or a magnetic grating sensor. The measurement precision of the capacitive grating sensor, the grating sensor and the magnetic grating sensor can reach 0.01mm-0.001mm, a relative capacitive grating sensor can be used for measuring tiny position change, and an absolute capacitive grating sensor can also be used for measuring an absolute position. The capacitive gate sensor adopted in the embodiment is an absolute capacitive gate sensor; or, the grating sensor is an absolute grating sensor; or, the magnetic grid sensor is an absolute magnetic grid sensor. The displacement sensor adopts an absolute type capacitive grating sensor or an absolute type magnetic grating sensor, can directly measure the displacement height value, does not need a reset calibration structure, does not need continuous electrification of the sensor, and is electrified only when measurement is needed, so that the electric quantity of a battery can be greatly saved, and the service life is prolonged. The capacitance grating sensor or the magnetic grating sensor comprises a fixed grating sheet and a movable grating sheet, the bottom plate 1 is provided with an outer cover, the fixed grating sheet is fixed on the inner surface of the outer cover, the movable grating sheet is fixedly arranged on the guide frame 3, therefore, the movable grating sheet can move along with the push rod, when the push rod generates axial displacement, the movable grating sheet and the fixed grating sheet also generate relative displacement, and the displacement of the push rod 9 is detected.

In the description above, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore should not be construed as limiting the scope of the invention.

In conclusion, although the present invention has been described with reference to the preferred embodiments, it should be noted that, although various changes and modifications can be made by those skilled in the art, unless such changes and modifications depart from the scope of the present invention, they should be construed as being included therein.

Claims

1. The utility model provides a temperature measuring device's push rod canceling release mechanical system for the restoration of push rod, its characterized in that: the novel positioning device is characterized by comprising a base plate (1), two rows of positioning columns (2) symmetrically arranged along the length direction of a push rod are arranged on the base plate (1), a guide frame (3) capable of sliding along the length direction of the push rod on the base plate (1) is arranged between the two rows of positioning columns (2), a torsion spring (4) is arranged on the guide frame (3), the torsion spring (4) is provided with two free ends, the two free ends are respectively abutted to the corresponding positioning columns in the two rows of positioning columns (2), and under the action of the torsion spring, one end of the guide frame (3) is abutted to the outer ends of the push rod.

2. The push rod resetting mechanism of the temperature measuring device according to claim 1, wherein: the torsion springs (4) are distributed at intervals along the length direction of the guide frame (3), and two free ends of each torsion spring (4) are respectively abutted to one corresponding positioning column in the two rows of positioning columns (2).

3. The push rod resetting mechanism of the temperature measuring device according to claim 1 or 2, wherein: the whole guide frame (3) is I-shaped, and the vertical edges of the guide frame (3) are arranged between the two rows of positioning columns (2).

4. The push rod resetting mechanism of the temperature measuring device according to claim 3, wherein: the bottom plate (1) is provided with a guide frame limiting block (5) for limiting the guide frame (3) to slide to a preset position towards the outer end, and the guide frame limiting block (5) is abutted to the transverse edge of the guide frame (3).

5. A temperature measuring device comprises a container shell (6), wherein a containing cavity (7) is formed inside the container shell (6), a temperature measuring fluid medium is filled in the containing cavity (7), a push rod barrel cavity (8) with the inner end communicated to the containing cavity (7) and the outer end communicated to the outside is arranged on the container shell (6), a push rod (9) capable of axially moving along the push rod barrel cavity (8) is arranged in the push rod barrel cavity (8), the periphery of the inner end of the push rod (9) is in sliding sealing fit with the wall surface of the push rod barrel cavity (8), the push rod (9) is connected with a displacement sensor (10) for detecting the displacement of the push rod (9), the displacement sensor (10) is connected with a temperature conversion module (11) for converting the displacement into a temperature change signal, the temperature conversion module (11) is connected with a temperature output module (12) for outputting the temperature signal, characterized in that the push rod resetting mechanism further comprises a push rod resetting mechanism according to any one of claims 1 to 4, the container shell (6) is fixed on the bottom plate (1), and the outer end of the push rod (9) is abutted against the guide frame (3).