KR100798419B1 - The anti-vibration tempepature gauge of bimetal method - Google Patents

Abstract

A bimetal type anti-vibration temperature gauge is provided to protect a steel wire from severe vibrations for a long period of time by locating an inner housing within an outer housing and supporting the steel wire by a steel wire support unit within the inner housing. A bimetal type anti-vibration temperature gauge comprises a steel wire having a bimetal part(200), a coil spring(30) in connection with the steel wire, a housing(100) for accommodation of the steel wire, a temperature pointer part(10) having a temperature display filled with silicon oil, and provided with a pointer which is assembled to the coil spring, and a connection unit for connecting the housing to the temperature pointer part. The housing comprises an inner housing(110) for accommodation of the steel wire, and an outer housing(120) for accommodation of the inner housing. A fixing unit(130), fitted into the outer housing, is provided with a fixing hole(FH) to secure one side of the inner housing. The steel wire is assembled to a center hole(112) of steel wire support parts(111) which interfere the range of operation of the steel wire, so as to protect the steel wire from being bent or cut due to severe vibrations.

Description

Bimetal Dustproof Thermometer {THE ANTI-VIBRATION TEMPEPATURE GAUGE OF BIMETAL METHOD}

1 is an exploded perspective view of a bimetallic dustproof thermometer according to the present invention;

Figure 2a is a front coupled perspective view of a bimetallic dustproof thermometer according to the present invention,

Figure 2b is a rear coupled perspective view of a bimetallic dustproof thermometer according to the present invention,

3 is a cross-sectional view showing a coupling state of the housing and the bimetal part of the bimetallic dustproof thermometer according to the present invention;

4 is an enlarged view of A of FIG. 3,

Figure 5 is a cross-sectional view showing a coupling state of the coupling means of the bimetallic dust-proof thermometer according to the present invention.

<Description of Symbols for Major Parts of Drawings>

10: temperature guide part 11: needle

20: steel wire 30: coil spring

100: housing

110: inner housing 111: steel wire support means

112: center hole

120: outer housing 130: fixing means

200: bimetal part

210: bimetal spring 220: coupling ring

230, 230 ': body portion 231: coupling protrusion

232: Combination part

300: coupling means

310: coupling plug 311: burring protrusion

312: the first central ball

320: coupling block 321: second central hole

330: coupling plate 331: coupling hole

FH: fixing hole

IH: Inner Hall

OR: Sealed O-ring

GP: Guide guide protrusion

PH: Plug Guide Groove

PP: Plate Guide Projection

The present invention relates to a bimetallic dustproof thermometer which is installed at a place where high temperature heat is generated and vibration is high, such as an engine of a ship, and more particularly, simplifies the manufacturing process, reduces production costs, durability and precision. It relates to a raised bimetallic dustproof thermometer.

In general, the place where the engine of the large ship is installed, the vibration is so severe that a person can not stand properly when the engine is running, as well as high temperature heat is generated. That is, in the case of large ships, only the space occupied by the engine is more than 12 square meters, and when the cylinder crankshaft of the engine is operated, considerable vibration and heat are generated, which is hardly estimated by human guesswork.

Various thermometers were produced through trial and error in order to manufacture a thermometer suitable for the above environment, and the conditions of the thermometer suitable for the above environment are as follows.

① First of all, it should be designed to withstand vibration because it is severe.

② It should be durable to prevent malfunction or deformation even in high temperature heat.

③ Reducing the standard error requires accurate temperature measurement.

④ The production cost should be low.

First, although a digital thermometer is used for accurate temperature measurement, the digital thermometer has a disadvantage of causing malfunction or short product life due to high temperature heat and vibration. In other words, there was a problem that the display unit and the built-in parts that are weak to vibration and heat are easily damaged by vibration and heat, and for this purpose, application number 20-2003-0012884 (registration number 20-0320854, multifunctional digital temperature measuring instrument for ships. Practical 1 ') has been applied, which relates to a multifunctional digital temperature measuring instrument for ships, which is inserted between an insert rod inserted into a portion where temperature measurement is required and a head portion displaying the temperature measured from the insert rod to the outside. By installing the heat dissipation unit, it is possible to prevent the high temperature of the measurement part from being transmitted directly to the head part, thereby preventing thermal damage to the head part, thereby providing a digital display that is easily exposed to thermal damage to the head part. While simplifying the internal structure of the digital display, it can be applied to various temperature ranges from 0 ℃ to 600 ℃. The.

However, 'Utility 1' was not only able to cut off the heat perfectly, but also caused a problem caused by frequent vibration due to severe vibration, or in the case of severe damage caused by a new replacement.

In order to solve the above-mentioned drawbacks of the digital method, an analog thermometer was adopted. The analog thermometer inserts the measuring instrument itself into the measuring part so that the angle of the indication needle moves according to the temperature. By making it possible to measure, it has the advantages of being small in size, inexpensive, and having low failure rate of the device.

However, the installation and removal of the temperature measuring device is somewhat difficult, and the temperature range that can be measured by a single measuring device is not only limited, and the error range according to the measurement is large, so that it is difficult to accurately measure the temperature and the coupling part of the thermometer is weak. There is a problem to use for a long time by installing in a place where severe vibration, such as an engine such as a ship. That is, problems such as the coupling part is dropped off due to vibration or the built-in components are damaged or separated frequently.

Accordingly, the application number 20-2003-0024582 (registration number 20-0330454, thermometer. Hereinafter, 'practical 2') is a temperature display plate when bending the burring portion of the coupling block while the temperature display plate is in close contact with the center of the case Since it is simple and firmly fixed to the case, the assembly is very easy, as well as the assembly time is shortened, the productivity can be significantly increased and the cost of the product can be lowered, and the temperature display plate is firmly fixed to the case by the coupling block. Even if the thermometer is installed in this severely generated area, the temperature display plate can be measured so that the temperature can be accurately measured.

However, 'practical 2' still has an error range of 10 ℃ or more when measuring temperature, and after a certain time due to weak coupling sites, the coupling sites fall off or due to severe vibration of the steel wire combined with a bimetal spring built into the thermometer. The bending or breaking phenomenon has occurred.

In addition, Application No. 20-2003-0026174 (Registration No. 20-0332045, Thermometer, hereinafter referred to as 'Utility 3') wraps the capillary tube with a protective tube and connects it to the mercury tank and the socket block of the case. Capillary vibrations and fluctuations were suppressed by the protective tube to suppress the leakage of mercury and breakage of the thermometer.However, 'Practice 3' is less robust because the socket block is coupled to the edge side of the thermometer. There was a problem that durability is poor when exposed to a long time.

On the other hand, the imported thermometer uses a gas pressure type. However, when using the gas pressure type, it is easy to cause cracks due to strong gas pressure. Moreover, using a gas pressure type in an engine of a ship in which high temperature heat and severe vibration are generated It involves a lot of problems. In fact, many defect repairs have occurred in ships using gas pressure thermometers.

In addition, Application No. 20-2003-0027153 (Registration No. 20-0334985, dust-proof thermometer. (Hereinafter referred to as "practical 4") is a case in which the instrument panel is built, a capillary tube extending through the corrugated tube on one side of the case, and A mercury tank provided at the tip of the capillary tube, a socket block connected to the corrugated pipe and installed through the case, a bracket coupled to the socket block, an instrument panel screwed to the bracket, and a tip of the capillary tube embedded in the case. An anti-vibration thermometer has been introduced that includes a flexible Bourdon tube connected to the bracket, a plurality of link mechanisms installed on the bracket and sequentially connected to the Bourdon tube, and instructions connected to the ends of the link mechanism. There are many parts embedded in the thermometer, which is bulky and increases the production cost, as well as had the conventional problem of low rigidity.

The present invention is made to solve the problems of the prior art, the main object of the present invention,

① It is made of bimetal to improve durability to withstand vibration and high temperature.

② It improves precision when measuring temperature by reducing error range.

③ Lower production costs and increase price competitiveness.

④ Simplify the internal parts to simplify the manufacturing process and increase productivity.

It is the purpose of the present invention to provide a bimetallic dustproof thermometer having the characteristics of the above ① ~ ④ and suitable for ships, various large engines, as well as particularly high temperature or shock.

In order to achieve the above object, the bimetallic dustproof thermometer according to the present invention includes a steel wire having a bimetal part, a coil spring connected to the steel wire, a housing in which the steel wire is embedded, a temperature display part, and filled with silicon oil. In the dustproof thermometer consisting of a temperature guide portion having a guide needle coupled to the coil spring, and a coupling means for coupling the housing to the temperature guide portion, the housing, the inner housing and the inner housing in which the steel wire is built It is made of a built-in outer housing; A fixing means having a fixing hole is provided to be coupled to one side of the outer housing and to fix one side of the inner housing; While being in close contact with the inner circumferential surface of the inner housing, the central hole is formed so that the steel wire passes through the center, and at least one steel wire support means for interfering with the operating radius of the steel wire is provided.

At this time, the bimetal part of the steel wire, bimetal spring that expands / contracts according to the temperature change; A pair of coupling rings coupled to both ends of the bimetal spring; And a pair of body parts having a coupling protrusion inserted into the coupling ring and having a combination portion formed at one end thereof so that the steel wire is fixed to the coupling ring.

In addition, the coupling means, one end is coupled to the inner housing, the other end is coupled to the rear center portion of the temperature guide portion, there is formed an inner hole in communication with the temperature guide portion therein the coil spring and the steel wire A coupling plug comprising a burring protrusion having a first central hole through which the coil spring passes through a center portion of the temperature guide portion; One end is coupled to the coupling plug, a second central hole of the 'b' shape is formed to correspond to the first central hole of the coupling plug, the inner housing is coupled to the other end, the steel wire and the second central hole Coupling block through which the coil spring passes; And a coupling plate seated on an inner surface of the temperature guide part and having a coupling hole into which a burring protrusion of the coupling plug is fitted, and fixedly coupled to the coupling hole by the burring protrusion.

Here, between the coupling plug, the coupling block and the temperature guide portion, characterized in that the sealing O-ring is further provided to maintain the airtight.

In addition, the rear surface of the temperature guide portion, the guide portion guide protrusions are formed on one side at an eccentric position; On one side of the coupling plate, the plate guide protrusions inserted behind the guide portion guide protrusions of the temperature guide portion are formed ; On one side of the coupling plug, a plug guide groove into which the guide portion guide projection of the temperature guide portion is formed; The temperature guide portion, the coupling plate, characterized in that configured to enable easy coupling between the plug.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a bimetallic dustproof thermometer according to the present invention, Figure 2a is a front coupling perspective view of a bimetallic dustproof thermometer according to the present invention, Figure 2b is a rear coupling perspective view of a bimetallic dustproof thermometer according to the present invention, 3 is a cross-sectional view showing a coupling state of the housing and the bimetal part of the bimetallic dustproof thermometer according to the present invention, FIG. 4 is an enlarged view of A of FIG. 3, and FIG. 5 is a coupling means of the bimetallic dustproof thermometer according to the present invention. The cross section shows the coupling state.

1 or 3 to 4, a steel wire having a bimetal part, a coil spring connected to the steel wire, a housing in which the steel wire is built, and a temperature display part are filled with silicon oil and filled in the coil spring. In the dustproof thermometer consisting of a temperature guide portion having a guide needle coupled to, and a coupling means for coupling the housing to the temperature guide portion, the housing 100, the inner housing in which the steel wire 20 is built-in ( 110 and an outer housing 120 in which the inner housing 110 is built; A fixing means (130) having a fixing hole (FH) is provided to be coupled to one side of the outer housing (120) and to fix one side of the inner housing (110); The steel wire support means 111 is formed to be in close contact with the inner circumferential surface of the inner housing 110 and the center hole 112 is formed to pass through the steel wire 20 to the center and to interfere with the operating radius of the steel wire 20. At least one or more are provided.

Here, the inner housing 110 is inserted into and coupled to one side of the inner housing 110 to the fixing hole (FH) of the fixing means 130 so that the inner housing 110 is located at the center of the outer housing 120, the inner housing ( The other side of the 110 is fixed to the other center of the outer housing 120. In addition, the coupling portion is welded to maintain the airtightness while coupling the fixing means 130, in which case, it is preferable to combine by argon welding. Here, since the inner housing 110 is fixed in the interior using the fixing means 130, more rigid coupling is possible. On the other hand, by coupling the steel wire 20 to the central hole 112 of the steel wire support means 111 that is coupled in the inner housing 110, the steel wire 20 is deformed or broken due to severe vibration That is, the principle that the wire is easily broken if the wire is repeatedly bent up and down a few times, when the wire 20 receives an external force such as severe vibration, the dislocation is increased and In addition, as the dislocation increases, the strength increases and eventually breaks. The reason is that the metal is easily broken as the strength increases. Accordingly, as shown in FIG. 3, the inner housing 110 is formed in a double pipe structure in which the outer housing 120 is disposed, and the steel wires are supported by the steel wire supporting means 111 in the inner housing 110. By supporting and coupling 20) once more, the steel wire 20 is not easily damaged even when exposed to severe vibration for a long time. This structure also increases the stability and precision of the thermometer. That is, both ends of the inner housing 110 are formed in a double pipe structure while being respectively fixed to the outer housing 120 and the fixing means 130, and the steel wire supporting means 111 is formed inside the inner housing 110. By being coupled to support the steel wire 20 will have a more firm coupling force.

On the other hand, as shown in Figure 1 or 3 to 4, the bimetal part 200 of the steel wire 20, the bimetal spring 210 to expand / contract according to the temperature change; A pair of coupling rings 220 coupled to both ends of the bimetal spring 210; And a pair of body portions 230 having a coupling protrusion 231 inserted into the coupling ring 220 and having a combination portion 232 formed at one end thereof so that the steel wire 20 is coupled and fixed. 230 '); the conventional structure is a structure in which the bimetal spring 210 and the body portions 130 and 230' are directly coupled without the coupling ring 220, and the body portions 230 and 230 ') Only one side of the welding was used, but it was not strong enough to endure vibration and the coupling part easily fell, and the accuracy of the thermometer was lowered due to the large standard error when measuring temperature. That is, the bimetal spring 210 is formed after being wound in a spiral form and is attached after accurate length calculation. The bimetal spring 210 is bonded to the body parts 230 and 230 ′ to weld a predetermined portion of the bimetal spring 210 together. Therefore, an error occurs as much as the welded portion, and by directly welding the body of the bimetal spring 210, the strength of the coupled portion is poor to withstand strong vibrations. Therefore, the present invention by welding by coupling the coupling ring 220 to the bimetal spring 210 and the body portion (230, 230 ') as a reinforcement, the portion of the bimetal spring 210 except for the portion of the coupling ring 220 Not only can the length be calculated and attached, but it also increases the precision when measuring the temperature and also increases the robustness. In addition, the steel wire 20 is coupled to the combination portion 232 of the body portion 230 ′ and then bonded by argon welding. At this time, the body portion 230 is coupled to one side of the inner housing 110 is coupled to the fixing hole (FH) of the fixing means 130, the body portion 230 'located on the other side is The combination part 232 is formed to be combined with the steel wire 20. In addition, the bimetal spring 210 is spirally wound, and is unwinded when the temperature rises, and operates while winding down when the temperature falls.

In addition, the coupling means 300, as shown in Figure 1 or 5, one end is coupled to the inner housing 110, the other end is coupled to the rear center portion of the temperature guidance portion 10, the inside An inner hole (IH) is formed in communication with the temperature guide portion 10 to allow the coil spring 30 and the steel wire 20 to pass therethrough, which is attached to the side of the edge of the temperature guide portion 10. Rather than attaching to the rear center portion of the temperature guide portion 10 as described above can be more firmly coupled. At this time, when the coupling means 300 and the inner housing 100, it is preferable to combine at least one or more coupling nuts (not shown) together to increase the coupling force.

In addition, the coupling means 300 is made of a burring protrusion 311 having a first central hole 312 through which the coil spring 30 passes through the center while being coupled to the rear center of the temperature guide part 10. Coupling plug 310; One end is coupled to the coupling plug 310, the second central hole 321 of the 'b' shape is formed to correspond to the first central hole 312 of the coupling plug 310, the other end is An inner housing 110 is coupled to the coupling block 320 through which the steel wire 20 and the coil spring 30 pass through the second central hole 321; And a coupling hole 331 that is seated on the inner surface of the temperature guide part 10 and to which the burring protrusion 311 of the coupling plug 310 is fitted, thereby forming the coupling hole (311) by the burring protrusion 311. Combination plate 330 is fixedly coupled to 331; consisting of, between the coupling plug 310, the coupling block 320 and the temperature guide portion 30, the sealing O-ring (OR) for maintaining the air tightness is further provided. . At this time, when the coupling block 320 and the coupling plug 310 of the coupling means 300, first inserting the burring protrusion 311 of the coupling plug 310 in the central portion of the temperature guide portion 10 and At the same time, after the burring protrusion 311 is inserted into the coupling hole 331 of the coupling plate 330, pressing the burring protrusion 311 with a press device, the burring protrusion 311 is bent in the radially outward direction. While being coupled to the coupling plate 330 and the temperature guide portion 10 and the coupling plug 310 integrally. In addition, the coupling of the coupling block 320 and the coupling plug 310 is coupled to one side of the coupling block 320 with a plurality of bolt screws. Here, the guide portion guide protrusion GP having an embossed shape of a predetermined size on one side and an engraved shape on the other side is formed on the rear surface of the temperature guide part 10 by pressing with a press device at an eccentric position; On one side of the coupling plate 330, the plate guide protrusion (PP) is inserted into the guide portion guide projection (GP) rear of the temperature guide portion 10 is formed protruding; On one side of the coupling plug 310, a plug guide groove PH is inserted into the guide portion guide projection GP of the temperature guide portion 10 is formed; The temperature guide part 10, the coupling plate 330, the coupling plug 310 can be easily coupled. This has the effect of shortening the working time to improve productivity.

In addition, as shown in Figures 1 to 2, the temperature guide portion 10 is filled with silicon oil does not easily deviate from the needle even in vibration, at this time, the internal structure is simplified to the temperature guide portion 10 Since the thickness of the) is made thin, the silicon oil is less and more rigid configuration.

Looking at the manufacturing process of the bimetal dust-proof thermometer according to the present invention having the configuration as described above is as follows. (See Figs. 1 to 5).

1) The coupling ring 220 is coupled to both ends of the bimetal spring 210.

2) The body portions 230 and 230 'are coupled to both ends of the coupling ring 220. (At this time, both ends of the bimetal spring 210 are coupled to the body portions 230 and 230'. Intervening between

3) After the process of 2) is finished by welding.

4) The steel wire 20 is coupled to the combination portion 232 of the body portion 230 '(in this case, the steel wire 20 to increase the bonding strength of the combination portion 232 and the steel wire 20). The thickness of the combination portion 232 that surrounds the thinner form increases the bonding force during welding.)

5) The steel wire support means 111 is inserted into the inner housing 110 and welded thereto.

6) Through the process of 1) to 4) is inserted into the inner wire 110, the steel wire 20 attached to the bimetal part 200 through the process of 5). 20 is inserted into the central hole 112 of the steel wire support means 111 and at the same time protrudes a predetermined length to the other side of the inner housing 110.)

7) The inner housing 110 is coupled to the outer housing 120. (At this time, the other side of the inner housing 110 is protruded to the outside of the outer housing 120 is coupled.)

8) The fixing means 130 is inserted into one side of the inner housing 110 and the outer housing 120 and welded. (At this time, the inner housing 110 and the outer housing 120 and the fixing means ( 130) are welded together and joined.)

9) The other end of the coil spring 30 is welded to one end of the steel wire 20 to be coupled.

10) The coupling block 320 is coupled to the other side of the inner housing 110. (At this time, the steel wire 20 and the coil spring 30 is located in the coupling block 320.)

11) to produce a temperature guide portion 10 coupled to the coupling plug 310 and the coupling plate 330. (At this time, one side of the coil spring 30 to the first central hole of the burring protrusion 311) Inserted into the (312) and manufactured by combining with the guide needle (11) of the temperature guide (10).)

12) The coupling block 320 is coupled to the coupling plug 310. (At this time, a plurality of bolts are coupled.)

13) In the process of 11) ~ 12), the sealing plug 310 and the temperature guide portion 10 between the rear, between the coupling plug 310 and the coupling block 320 by inserting the sealing O-ring (OR) Let's do it.

▶ It is preferable to adopt argon welding method for welding joint in the above process.

While the present invention has been illustrated and described with respect to preferred embodiments, the invention is not limited to the above-described embodiments, and is commonly used in the field of the invention without departing from the spirit of the invention as claimed in the claims. Anyone with a variety of variations will be possible.

According to the present invention as described above, the durability is well to withstand severe vibration, lowered the range of the standard error when measuring the temperature, to increase the precision, and to simplify the configuration to lower the production cost, as well as to increase the cost competitiveness It is effective to improve.

Claims (6)

A temperature guide part including a steel wire having a bimetal part, a coil spring connected to the steel wire, a housing in which the steel wire is embedded, a temperature display part, and a needle that is filled with silicon oil and coupled to the coil spring; In the dustproof thermometer comprising a coupling means for coupling the housing to the guide portion, The housing 100 includes an inner housing 110 in which the steel wire 20 is embedded and an outer housing 120 in which the inner housing 110 is embedded; A fixing means (130) having a fixing hole (FH) is provided to be coupled to one side of the outer housing (120) and to fix one side of the inner housing (110); The steel wire support means 111 is formed to be in close contact with the inner circumferential surface of the inner housing 110 and the center hole 112 is formed to pass through the steel wire 20 to the center and to interfere with the operating radius of the steel wire 20. Bimetal type dustproof thermometer, characterized in that provided with at least one. The method of claim 1, wherein the bimetal part 200 of the steel wire 20, A bimetal spring 210 that expands / contracts according to a change in temperature; A pair of coupling rings 220 coupled to both ends of the bimetal spring 210; And A pair of body portions 230 having a coupling protrusion 231 inserted into the coupling ring 220 and having a combination portion 232 formed at one end thereof so that the steel wire 20 is fixedly coupled; 230 '); Bimetallic dust-proof thermometer, characterized in that consisting of. The method of claim 1, wherein the coupling means 300, One end is coupled to the inner housing 110, the other end is coupled to the rear center portion of the temperature guide part 10, and an inner hole IH is formed therein in communication with the temperature guide part 10. Bimetallic dust-proof thermometer, characterized in that the coil spring 30 and the steel wire 20 is passed. The method of claim 1, wherein the coupling means 300, A coupling plug 310 formed of a burring protrusion 311 having a first central hole 312 through which the coil spring 30 passes through the center of the rear surface of the temperature guide part 10; One end is coupled to the coupling plug 310, the second central hole 321 of the 'b' shape is formed to correspond to the first central hole 312 of the coupling plug 310, the other end is An inner housing 110 is coupled to the coupling block 320 through which the steel wire 20 and the coil spring 30 pass through the second central hole 321; And The coupling hole 331 which is seated on the inner surface of the temperature guide portion 10, the burring protrusion 311 of the coupling plug 310 is formed is formed by the burring protrusion 311 the coupling hole 331 Coupling plate 330 is fixedly coupled to; Bimetallic dust-proof thermometer, characterized in that consisting of. According to claim 4, Between the coupling plug 310, the coupling block 320 and the temperature guide portion 30, Bimetallic dust-proof thermometer, characterized in that the sealing O-ring (OR) is further provided to maintain the airtightness. The method of claim 4, wherein On the rear surface of the temperature guide portion 10, a guide portion guide protrusion GP is formed at one side in an eccentric position; On one side of the coupling plate 330, the plate guide protrusion (PP) is inserted into the guide portion guide projection (GP) rear of the temperature guide portion 10 is formed protruding; On one side of the coupling plug 310, a plug guide groove PH is inserted into the guide portion guide projection GP of the temperature guide portion 10 is formed; Bimetal dust-proof thermometer, characterized in that configured to enable easy coupling between the temperature guide portion 10, the coupling plate 330, the coupling plug 310.

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