CN213209290U

CN213209290U - Bimetal thermometer convenient to zero setting

Info

Publication number: CN213209290U
Application number: CN202022663887.6U
Authority: CN
Inventors: 张政松
Original assignee: Tour Instruments Jiangsu Co ltd
Current assignee: Tour Instruments Jiangsu Co ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-05-14
Anticipated expiration: 2030-11-17

Abstract

The utility model provides a bimetallic thermometer convenient for zero setting, which comprises a box body, an adjusting device and an error-contact prevention device, wherein the adjusting device and the error-contact prevention device are arranged in the box body, a rotating shaft is arranged in the box body, a dial scale is arranged on the rotating shaft in a relatively rotating way, the adjusting device comprises a driven gear sleeved on the rotating shaft, a driving gear arranged on the box body and a rotating column arranged on the driven gear, the dial scale is arranged on the driven gear, the driven gear is meshed with the driving gear, the rotating column is clamped on the box body, the error-contact prevention device comprises a linkage column, a rotation stopping sleeve and an extension spring, the extension spring is fixedly connected with the rotation stopping sleeve and the rotating column, under the pulling action of the extension spring, the rotation stopping sleeve can be tightly jointed on the box body, through the friction force between the rotation stopping sleeve and the box body and through the limitation, the rotation column can be prevented from rotating under the influence of the rotation stopping sleeve, so that the zero deflection phenomenon is reduced.

Description

Bimetal thermometer convenient to zero setting

Technical Field

The utility model relates to an instrument and instrument technical field especially relates to a bimetal thermometer convenient to zero setting.

Background

When the thermometer using dial plates carries out real-time monitoring on the temperature of a system environment, the dial plates in the thermometer rotate relative to the meter boxes due to the fact that the field environment is complex and changeable, after the thermometer is used for a long time, zero positions on the dial plates deviate relative to the meter boxes, the zero positions on the dial plates need to be adjusted, in the adjusting process, the zero adjusting devices on the dial plates start due to factors such as misoperation, the zero positions of the thermometer can deflect, and the number indication of the thermometer is not accurate enough.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: during the daily use of thermometer, zero setting device of calibrated scale is easy to be because of touching zero position deflection by mistake.

The utility model provides a technical scheme that its technical problem adopted is: a double-metal thermometer convenient for zero setting comprises a box body, an adjusting device and an error-contact prevention device, wherein the adjusting device and the error-contact prevention device are installed in the box body, a rotating shaft is installed in the box body, a dial is arranged on the rotating shaft in a relatively rotating mode, the adjusting device comprises a driven gear sleeved on the rotating shaft, a driving gear installed on the box body and a rotating column installed on the driven gear, the dial is installed on the driven gear, the driven gear is meshed with the driving gear, the rotating column is clamped on the box body, the error-contact prevention device comprises a linkage column installed on the rotating column, a rotation stopping sleeve sleeved on the rotating column and a tension spring arranged in the rotation stopping sleeve, the tension spring is fixedly connected with the rotation stopping sleeve and the rotating column, a yielding groove corresponding to the linkage column is formed in the rotation stopping sleeve, the rotation stopping sleeve is connected to the linkage column in a clamping mode through the abdicating groove.

Furthermore, an accommodating hole is formed in the end face, far away from the driving gear, of the rotating column, one end of the extension spring is fixedly connected to the bottom of the accommodating hole, and the other end of the extension spring is fixedly connected to the inner wall of the rotation stopping sleeve.

Furthermore, the axle center position of driving gear is opened has the connection screw, the rotation post cooperation interlude to in the connection screw.

Furthermore, be equipped with the screens step on the rotation post, the rotation post passes through screens step joint is in on the box body.

Furthermore, a bearing column is rotatably inserted in the driven gear, and the dial is fixedly installed at the end part of the bearing column.

Furthermore, a pressing screw is inserted into the end of the bearing column in a matched mode, a nut of the pressing screw is pressed on the dial, and the tail of the pressing screw penetrates through the dial and then is inserted into the bearing column in a matched mode.

Furthermore, the end part of the bearing column is of a hexagon nut-shaped structure, a threaded hole is formed in the bearing column, the threaded hole is inserted into the hexagon nut-shaped end part of the bearing column, and the pressing screw is inserted into the threaded hole in a matched mode.

Further, be equipped with rotation portion and suppression portion in the pivot, the diameter of rotation portion is greater than the diameter of suppression portion, the calibrated scale is rotationally established in rotation portion, the screw-thread fit cover is equipped with swivel nut in the suppression portion, swivel nut is in can restrict after screwing in the suppression portion the calibrated scale is in epaxial removal stroke.

Further, the box body is of a disc-shaped structure, the rotating shaft is arranged on the disc surface of the box body, and the mistaken touch preventing device is arranged on the back surface of the box body.

The beneficial effects of the utility model are that, set up adjusting device on the bimetallic thermometer convenient to zero setting, the driving gear can be controlled through the rotation post among the adjusting device and the box body rotates, the driving gear drives driven gear and rotates in the box body, thereby can drive the calibrated scale and rotate in the box body, zero-bit until the calibrated scale is calibrated, after the calibration zero-bit, the extension spring that prevents among the mistake touching device is sent forth force, will only rotate the sleeve and pull to closely laminating on the box body, through the joint relation of linkage post and the groove of stepping down, through the frictional force between only rotate sleeve and the box body, the position of locking only rotate sleeve for the box body, thereby avoid only rotating the sleeve to drive the rotation post and rotate, reduce the calibrated scale and take place to rotate the inaccurate phenomenon of zero-bit.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a perspective view of a bimetallic thermometer of the present invention that facilitates zeroing;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a front view of FIG. 1;

FIG. 4 is a cross-sectional view taken along A-A in FIG. 3;

in the figure: the bimetal thermometer 100, the box body 10, the adjusting device 20, the false touch prevention device 30, the rotating shaft 110, the dial 120, the rotating part 111, the pressing part 112, the rotating nut 113, the driven gear 210, the driving gear 220, the rotating column 230, the rotating groove 114, the connecting screw hole 222, the clamping step 231, the bearing column 211, the threaded hole 212, the pressing holding screw 213, the linkage column 310, the rotation stopping sleeve 320, the extension spring 330, the abdicating groove 321 and the accommodating hole 232 are convenient for zero setting.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like 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 the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

As shown in fig. 1 to 4, the present invention provides a bimetal thermometer 100 convenient for zeroing, which comprises a box body 10, an adjusting device 20 installed in the box body 10, and a false touch preventing device 30 disposed on the box body 10 and corresponding to the adjusting device 20.

The box body 10 is substantially in a disk shape, a rotating shaft 110 is arranged at the central position of the box body 10, a dial 120 is rotatably mounted on the rotating shaft 110, a movement (not shown) is inserted in the rotating shaft 110, a pointer is connected to the movement and can rotate around the rotating shaft 110 under the driving of the movement, so that the relative rotation between the pointer and the dial 120 can be realized, and the magnitude of the testing pressure can be reflected. The adjusting device 20 is installed in the disc surface of the box body 10, the false touch preventing device 30 is arranged outside the disc surface of the box body 10, the adjusting device 20 can be prevented from loosening by the limiting effect of the false touch preventing device 30, and the dial plate 120 can be prevented from easily rotating relative to the box body 10.

The rotating shaft 110 comprises a rotating portion 111 and a pressing portion 112, the rotating portion 111 is arranged close to the box body 10, the diameter of the rotating portion 111 is larger than that of the pressing portion 112, a step-shaped structure is formed between the rotating portion 111 and the pressing portion 112, the dial 120 is rotatably sleeved on the rotating portion 111, a rotating nut 113 is sleeved on the pressing portion 112 in a threaded fit mode, and the rotating nut 113 limits the axial moving stroke of the dial 120 along the rotating shaft 110 after being screwed tightly on the pressing portion 112.

As shown in fig. 4, the adjusting device 20 includes a driven gear 210 rotatably fitted over the rotating part 111, a driving gear 220 mounted on the cassette 10, and a rotating post 230 mounted on the driven gear 210.

The axial position of the driven gear 210 is sleeved on the rotating shaft 110, the driven gear 210 can rotate relative to the rotating shaft 110, more specifically, a rotating groove 114 is arranged on the upper end surface of the rotating part 111, the driven gear 210 can be rotatably sleeved on the rotating groove 114, the driven gear 210 is clamped and limited on the rotating shaft 110 by the rotating nut 113 and the rotating part 111, the position of the driven gear 210 on the rotating shaft 110 is limited by the limiting of the rotating nut 113 and the rotating part 111, the driving gear 220 is arranged on the side edge of the driven gear 210, the driving gear 220 and the driven gear 210 are mutually meshed, and the rotating column 230 is arranged at the axial position of the driving gear 220.

The axial center of the driving gear 220 is provided with a connection screw hole 222, the rotation post 230 can be inserted into the box body 10 in a relatively rotatable manner, the rotation post 230 is provided with a locking step 231, the locking step 231 is locked to the back of the box body 10, one end of the rotation post 230 is inserted into the connection screw hole 222 in a matching manner, and the other end of the rotation post 230 is locked to the back of the box body 10. By manipulating the end of the rotation column 230 outside the box body 10, the rotation column 230 can be screwed into the connection screw hole 222, and under the cooperation of the rotation column 230 and the connection screw hole 222, the rotation column 230 can penetrate through the box body 10 and then penetrate into the driving gear 220, and meanwhile, the rotation column 230 can drive the driving gear 220 to rotate, and the driving gear 220 drives the driven gear 210 to rotate.

The bearing columns 211 are symmetrically arranged on the end face of the driven gear 210, the bearing columns 211 are symmetrical about the axis of the driven gear 210, the end part, departing from the box body 10, of the bearing column 211 is of a hexagonal nut-shaped structure, the axis of the bearing column 211 is provided with a threaded hole 212, and the bearing column 211 can be inserted in the end face of the driven gear 210 in a relatively rotating mode. The dial 120 is lapped on the end part of the hexagon nut-shaped structure of the bearing column 211, the press holding screw 213 is inserted in the threaded hole 212 in a matching mode, the nut of the press holding screw 213 is pressed on the dial 120, and the tail part of the press holding screw 213 is inserted into the end part of the bearing column 211. It can be understood that the dial 120 is relatively rotatably inserted on the rotating column 230, the dial 120 is fixedly pressed on the bearing column 211 through the pressing screw 213, the dial 120 is fixedly connected with the driven gear 210 through the bearing column 211, and the driven gear 210 can drive the dial 120 to rotate around the bearing column 211 under the driving of the driving gear 220.

As shown in fig. 4, the false touch preventing device 30 includes a linkage post 310 disposed on an end of the rotation post 230, a rotation stopping sleeve 320 fitted over the rotation post 230, and an extension spring 330 disposed in the rotation stopping sleeve 320. The linkage post 310 is disposed along the radial direction of the rotation post 230, the linkage post 310 and the rotation stopping sleeve 320 are disposed on the back of the case 10, and the extension spring 330 is further fixedly connected to the rotation post 230. Under the action of the extension spring 330, the end of the rotation stopping sleeve 320 abuts against the box 10, and the friction force between the rotation stopping sleeve 320 and the box 10 is increased by the pulling action of the extension spring 330 on the rotation stopping sleeve 320, so that the rotation stopping sleeve 320 can be prevented from rotating relative to the box 10, and the stability of the rotation stopping sleeve 320 relative to the box 10 is improved.

Preferably, the rotation stopping sleeve 320 is provided with an abdicating groove 321, the abdicating groove 321 is matched with the linkage column 310, the linkage column 310 can be inserted into the abdicating groove 321 in a relatively sliding manner, and when the rotation stopping sleeve 320 is sleeved on the rotating column 230, the rotation stopping sleeve 320 is inserted into the linkage column 310 through the abdicating groove 321. When the rotation-stopping sleeve 320 rotates relative to the box 10, the rotation-stopping sleeve 320 can drive the rotation column 310 to rotate synchronously through the abdicating groove 321 and the linkage column 310.

Preferably, the end surface of the rotation column 230 is opened with a receiving hole 232, one end of the extension spring 330 is fixedly connected to the bottom of the receiving hole 232, the other end of the extension spring 330 is fixedly connected to the inner wall of the rotation stopping sleeve 320, the rotation stopping sleeve 320 is stably sleeved on the end of the rotation column 230 under the action of the extension spring 330, and the end of the rotation stopping sleeve 320 tightly abuts against the back surface of the box 10.

When the bimetal thermometer 100 convenient for zeroing is used, when the dial 120 rotates around the rotating shaft 110 to cause zero-position misalignment, the rotation-stopping sleeve 320 rotates on the back surface of the box body 10, the rotation column 230 can be driven to rotate through the rotation-stopping sleeve 320, so that the driving gear 220 can be driven to rotate, the driven gear 210 synchronously rotates under the driving of the driving gear 220, the driven gear 210 drives the dial 120 to synchronously rotate when rotating around the rotating shaft 110 until the dial 120 can rotate to the zero position to reset, and the rotation-stopping sleeve 320 is pressed against the back surface of the box body 10 again under the action of the extension spring 330.

In the using process, due to the pulling action of the extension spring 330, the rotation stopping sleeve 320 can tightly abut against the back surface of the box body 10, and the rotation stopping sleeve 320 limits the rotation process of the rotation column 230 through the linkage column 310 and the abdicating groove 321, so that the rotation of the dial plate 120 under the action of the driving gear 210 can be avoided, and the phenomenon of zero offset of the dial plate 120 is reduced.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a bimetal thermometer convenient to zero setting which characterized in that: comprises a box body, an adjusting device and an anti-false-touch device which are arranged in the box body, wherein a rotating shaft is arranged in the box body, the rotating shaft is provided with a dial disc in a relatively rotating way, the adjusting device comprises a driven gear sleeved on the rotating shaft, a driving gear arranged on the box body and a rotating column arranged on the driven gear, the dial is arranged on the driven gear, the driven gear is meshed with the driving gear, the rotating column is clamped on the box body, the false touch preventing device comprises a linkage column arranged on the rotating column, a rotation stopping sleeve sleeved on the rotating column and an extension spring arranged in the rotation stopping sleeve, extension spring fixed connection the end rotate the sleeve with rotate the post, end rotate be provided with on the sleeve with the groove of stepping down that the linkage post corresponds, the end rotate the sleeve pass through the groove joint of stepping down to on the linkage post.

2. A bimetallic thermometer as recited in claim 1, and further comprising: an accommodating hole is formed in the end face, far away from the driving gear, of the rotating column, one end of the extension spring is fixedly connected to the bottom of the accommodating hole, and the other end of the extension spring is fixedly connected to the inner wall of the rotation stopping sleeve.

3. A bimetallic thermometer as recited in claim 1, and further comprising: the axle center position of driving gear is opened has the connection screw, the rotation post cooperation interlude to in the connection screw.

4. A bimetallic thermometer as recited in claim 1, and further comprising: the rotary column is provided with a clamping step and is clamped on the box body through the clamping step.

5. A bimetallic thermometer as recited in claim 1, and further comprising: the driven gear is rotatably inserted with a bearing column, and the dial is fixedly mounted on the end part of the bearing column.

6. A bimetallic thermometer as recited in claim 5, and further characterized by: the end part of the bearing column is provided with a pressing screw in a penetrating and inserting mode in a matching mode, a nut of the pressing screw is pressed and held on the dial, and the tail part of the pressing screw penetrates through the dial and then is inserted on the bearing column in a matching mode.

7. A bimetallic thermometer as recited in claim 6, and further comprising: the end part of the bearing column is of a hexagon nut-shaped structure, the bearing column is provided with a threaded hole, the threaded hole is inserted into the hexagon nut-shaped end part of the bearing column, and the pressing screw is inserted into the threaded hole in a matched mode.

8. A bimetallic thermometer as recited in claim 1, and further comprising: be equipped with rotation portion and suppression portion in the pivot, the diameter of rotation portion is greater than the diameter of suppression portion, the calibrated scale is rotationally established in the rotation portion, the screw-thread fit cover is equipped with the swivel nut in the suppression portion, the swivel nut is in can restrict after screwing in the suppression portion the calibrated scale is in epaxial removal stroke.

9. A bimetallic thermometer as recited in claim 1, and further comprising: the box body is of a disc-shaped structure, the rotating shaft is arranged on the disc surface of the box body, and the mistaken touch preventing device is arranged on the back surface of the box body.