KR20230053133A - Structure for jiggle valve attached thermostat - Google Patents

Abstract

According to an embodiment of the present invention, a jiggle valve structure for reducing shaking of a thermostat can be provided. The thermostat includes: a housing having a coolant inlet connected to a radiator side and a coolant outlet connected to an engine side; a main valve opening and closing a flow path by touching, in the form of a disk, or being spaced apart from the inner circumference of a valve gate formed in a pipe provided on a coolant inlet side; a valve actuator installed at the center of the axis of the main valve to open the main valve so that coolant moves from the radiator side to the engine side; a spring member installed between the main valve and a case mount to push the main valve so that a closed state is maintained; and a jiggle valve axially coupled to an outlet hole formed in the upper surface of the main valve to block the coolant from flowing into the outlet hole and to control the outlet hole so that only air bubbles are discharged through the outlet hole. The jiggle valve has: a disc-shaped upper cap; a disc-shaped lower cap formed at a position opposite to the upper cap; and a neck connecting the upper cap and the lower cap. The diameter of the upper cap is formed to be larger than that of the lower cap. The diameter of the lower cap is formed to be larger than the inner diameter of the outlet hole. The inner diameter of the outlet hole is formed to be larger than the diameter of the neck. Thus, when the jiggle valve moves vertically, the jiggle valve can maintain a stable position. Therefore, the durability and the service life can be increased.

Description

Jiggle valve structure for reducing shaking of thermostat {STRUCTURE FOR JIGGLE VALVE ATTACHED THERMOSTAT}

The present invention relates to a shake-reducing type jiggle valve structure of a thermostat, and more particularly, utilizes a cap guide space provided above an outlet hole of a jiggle valve to insert an upper cap so as to be protected from the flow of coolant, thereby Regarding the jiggle valve structure for reducing shaking of a thermostat, which prevents friction and wear between members to increase durability and service life by preventing shaking when the jiggle valve descends due to its own weight and ascends and descends due to the rising buoyancy of air bubbles will be.

BACKGROUND ART In general, automobiles are provided with a water-cooled cooling device that cools an engine to prevent overheating and maintains cooling water at an appropriate temperature. The water-cooled cooling system draws coolant heated by the heat of the engine to the radiator and dissipates the heat, and the dissipated coolant is sent back to the cylinder block and the water jacket of the cylinder head by the water pump to cool the engine, and the process is repeated. In this process, the coolant sent to the engine passes through a thermostat. The thermostat is a valve that operates automatically according to the water temperature and is installed on the coolant passage between the engine and the radiator.

1 is a schematic diagram of a prior art thermostat, FIG. 2 is an enlarged view showing the structure of the jiggle valve of FIG. 1, and FIG. 3 is an enlarged view showing an operation example of the jiggle valve of FIG.

Referring to FIG. 1 , a conventional thermostat 1 includes a housing 10 having a coolant inlet connected to a radiator side and a coolant outlet connected to an engine side. A disc-shaped main valve 20 is installed in the conduit on the inlet side of the housing 10 to open and close the conduit.

A jiggle valve 50 is installed in the main valve 20 to discharge air contained in the engine-side conduit or to prevent the warm-up time of the engine from being prolonged.

In addition, a valve actuator 30 is installed at the center of the shaft of the main valve 20 . The valve actuator 30 includes a cylinder member 32 coupled through the center of the main valve 20, a piston member 31 inserted into the inner diameter of the cylinder member 32 and operated to move forward and backward, and the main valve (20) A wax case 33 that is coupled to the cylinder member 32 at the bottom and filled with wax 34 therein, and a case holder 35 that couples the lower end of the wax case 33 to the housing 10 consists of

At this time, a spring member 40 is installed between the main valve 20 and the case holder 35 to push the main valve 20 to maintain a closed state.

For example, while the spring member 40 provides tension to maintain the main valve 20 in a closed state, the valve actuator 30, when the temperature of the coolant that has undergone the heat absorption process in the engine reaches a set temperature or higher, the main valve (20) is opened to allow coolant to be discharged to the engine side to cool the engine.

Further, the main valve 20 is formed of a circular cap-shaped insert valve 21 made of metal and a rubber 22 forming an outer shell of the insert valve 21 .

At this time, an outflow hole 23 for discharging air bubbles is formed on the upper surface of the insert valve 21, and a jiggle valve 50 is installed in the outflow hole 23 to block the inflow of cooling water and discharge only air bubbles. The outflow hole 23 is intermittent.

The aforementioned jiggle valve 50 is configured in a form in which a neck 52 connects between an upper cap 51 and a lower cap 53.

When the radiator inlet is closed, the jiggle valve 50 allows air remaining in the cooling water to flow out and controls the flow of cooling water into the engine.

For example, in a situation where coolant flows from the radiator side to the engine side, that is, in a state where the main valve 20 is open, the upper cap 51 receives pressure and the outlet hole 23 remains closed, and conversely, the main valve 20 In the closed state, the air bubbles filled in the engine side are driven into the outlet hole 23 and the upper cap 51 is pushed upward to open the valve so that the air bubbles escape.

After the bubbles are discharged, the jiggle valve 50 descends and the upper cap 51 closes the outlet hole 23.

At this time, the diameter of the outlet hole 23 is formed larger than the diameter of the neck 52 of the jiggle valve 50 so that a gap exists between the two members, and air bubbles can escape through the gap at this time.

However, in the prior art jiggle valve 50, when the cooling water moves, the upper cap 51 of the jiggle valve 50 receives side pressure, and there is a gap between the diameter of the neck 52 and the diameter of the outlet hole 23. As it exists, the jiggle valve 50 twists and fluctuates.

At this time, as shown in FIG. 3, the neck 52 of the jiggle valve 50 and the inner diameter edge of the outlet hole 23 rub against each other, causing wear.

Such abrasion phenomenon is irregular wear and not only shortens the life of the jiggle valve 50, but also loses the function of the jiggle valve 50, such as leakage problems due to abnormal wear of the outlet hole 23.

Due to the loss of the function of the jiggle valve 50, the air flow is not smooth, which not only increases the engine warm-up time, but also increases the cavitation phenomenon in which bubbles contact the outer wall to cause corrosion or generate noise.

Republic of Korea Patent No. 10-0372105

The present invention utilizes the cap guide space provided above the outlet hole of the jiggle valve so that the upper cap is inserted to protect it from the flow of cooling water, thereby lowering the jiggle valve by its own weight and lifting by the rising buoyancy of bubbles It is an object of the present invention to provide a shake reducing jiggle valve structure that prevents friction and wear between members so that durability and service life are increased.

Another object of the present invention is to prevent cavitation in the cooling water circulation system and problems caused therefrom, and to shorten the warm-up time of the radiator by ensuring smooth air flow through the stable operation of the jiggle valve.

According to one aspect of the present invention, a housing in which a coolant inlet connected to the radiator side and a coolant outlet connected to the engine side are formed, and the inner periphery of the valve gate formed in the conduit on the coolant inlet side are contacted in a disc shape, or A main valve that is spaced apart and opens and closes the flow path, a valve actuator installed at the center of the shaft of the main valve to open the main valve to move coolant from the radiator side to the engine side, and a main valve installed between the main valve and the case holder The spring member that maintains the closed state by pushing the spring member and the outlet hole formed on the upper surface of the main valve block the coolant from flowing into the outlet hole from the engine side, and only air bubbles generated from the engine side cover the outlet hole. In the thermostat including a jiggle valve for regulating the outlet hole to be discharged through,

The jiggle valve forms a disk-shaped upper cap, a disk-shaped lower cap formed at a position facing the upper cap, and a neck connecting the upper cap and the lower cap, the thickness of the upper cap being lower It is formed thinner than the thickness of the cap, the diameter of the upper cap is larger than that of the lower cap, the diameter of the lower cap is larger than the inner diameter of the outlet hole, and the inner diameter of the outlet hole is larger than the diameter of the neck. In addition, a shake reduction type jiggle valve structure of the thermostat can be provided so that the jiggle valve maintains a stable posture during vertical movement of the jiggle valve.

In addition, an extended cap guide space is formed above the outlet hole so that the upper cap is inserted, but the height of the cap guide space is equal to or slightly smaller than the thickness of the upper cap so that the upper cap is covered by the cap guide space so that the coolant flows. can be protected from interference by

In addition, in order to prevent the upper cap from leaving the cap guide space even when the upper cap reaches the maximum lifting height, the maximum lifting height of the upper cap may be limited to a height within the cap guide space.

In addition, the height of the cap guide space may be formed higher than the height from the upper surface of the lower cap to the bottom of the outlet hole in a state in which the upper cap of the jiggle valve descends and comes into contact with the bottom of the cap guide space.

In addition, the outer surface of the upper cap is formed to be a vertical surface, and the inner surface of the cap guide space is also formed to be a vertical surface so that when the upper cap is lifted, it is guided in contact with the inner surface of the cap guide space, and the cap guide space is smaller than the outer diameter of the upper cap. It is possible to form a gap (G) so that the bubble can escape by forming a large inner diameter size.

In addition, when a portion of the upper cap of the jiggle valve is formed to protrude upward into the cap guide space, the protruding portion may be formed in a streamlined or inclined surface so as not to interfere with the flow of coolant.

In addition, the upper outer surface of the outlet hole contacting the bottom surface of the upper cap may be formed as a flat smooth surface to maximize the mutual contact area.

In addition, the main valve is formed of a circular cap-shaped insert valve and rubber forming an outer shell of the insert valve, the rubber is formed in a donut shape on the outer circumference of the insert valve, and a part of the rubber is formed with an outlet hole It may extend inward so that the inner periphery of the outlet hole is covered.

According to the shaking-reducing jiggle valve structure of the present invention described above, the cap guide space provided above the outlet hole of the jiggle valve can be used to insert the upper cap to protect it from the flow of cooling water. It has the effect of increasing durability and service life by preventing friction and abrasion between members because shaking does not occur during the descending operation by the air bubble and the ascending and descending operation by the rising buoyancy of the bubble.

In addition, the present invention has an effect of reducing the warm-up time of the radiator by preventing cavitation and problems caused therefrom in the cooling water circulation system by smooth air flow by the stable operation of the jiggle valve.

1 is a schematic diagram of a prior art thermostat;
Figure 2 is an enlarged view showing the jiggle valve structure of Figure 1;
Figure 3 is an enlarged view showing an operation example of the jiggle valve of Figure 1;
4 is a schematic diagram of a thermostat to which a shaking reducing jiggle valve structure according to the present invention is applied.
5 is a plan view showing a main valve of a thermostat to which a shaking reducing jiggle valve structure according to the present invention is applied.
Figure 6a, Figure 6b is an exemplary view of the closed state of the shaking reduction jiggle valve according to the present invention.
Figure 7 is an exemplary view of the open state of the shaking reduction jiggle valve according to the present invention.

Specific structural or functional descriptions of the embodiments according to the concept of the present invention disclosed in this specification are only illustrated for the purpose of explaining the embodiments according to the concept of the present invention, and the embodiments according to the concept of the present invention These may be embodied in various forms and are not limited to the embodiments described herein.

Embodiments according to the concept of the present invention can apply various changes and can have various forms, so the embodiments are illustrated in the drawings and described in detail herein. However, this is not intended to limit the embodiments according to the concept of the present invention to specific disclosures, and includes modifications, equivalents, or substitutes included in the spirit and scope of the present invention.

Terms such as first or second may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component, for example, without departing from the scope of rights according to the concept of the present invention, a first component may be named a second component, Similarly, the second component may also be referred to as the first component.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle. Expressions describing the relationship between components, such as "between" and "directly between" or "directly adjacent to" should be interpreted similarly.

Terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate that the described feature, number, step, operation, component, part, or combination thereof exists, but one or more other features or numbers, It should be understood that the presence or addition of steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this specification, it should not be interpreted in an ideal or excessively formal meaning. don't

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, the scope of the patent application is not limited or limited by these examples. Like reference numerals in each figure indicate like elements.

4 is a schematic diagram of a thermostat to which a shaking reducing jiggle valve structure according to the present invention is applied, and an inlet control type thermostat in which cooling water is introduced from a radiator and moved to an engine side is disclosed.

Referring to FIG. 4, the thermostat 1 to which the shaking reducing jiggle valve structure according to the present invention is applied is largely a housing 110, a main valve 120, a valve actuator 130, a spring member 140, and a jiggle It consists of the configuration of the valve 150.

First, referring to the housing 110, a coolant inlet 111 connected to the radiator side and a coolant outlet 112 connected to the engine side are formed.

At this time, a valve gate 113 in which a disk-shaped main valve 120 is installed is formed in the conduit of the cooling water inlet 111, and a disk-shaped main valve 120 is installed on the inner periphery of the valve gate 113. Is contacted or separated to open and close the flow path.

Describing the main valve 120, it is formed of a circular cap-shaped insert valve 121 and a rubber 122 forming an outer shell of the insert valve 121.

At this time, the insert valve 121 serves as a core material of the main valve 120, and can be manufactured by press-forming a circular plate made of metal into a cap shape.

In the center of the insert valve 121, a piston coupling portion 121a through which the piston member 131 penetrates and is coupled is formed. The piston coupling portion 121a may be formed in a short tubular shape to be coupled with the piston member 131 by interference fit. For example, by manufacturing the outer surface of the piston member 131 in a wedge shape having a gentle slope and axially coupling it, it is possible to make the coupling between the two members by an interference fit.

The rubber 122 forms an outer shell of rubber material on the surface of the insert valve 121, serves to prevent corrosion of the insert valve 121, and is elastically grounded with the valve gate 113 to provide a watertight seal. maintenance is made.

At this time, the rubber 122 may not be formed on the entire insert valve 121, but may be formed only on a portion in contact with the valve gate 113 as shown in FIG.

5 is a plan view showing a main valve of a thermostat to which a shake reducing jiggle valve structure according to the present invention is applied. As shown in FIG. 5, a rubber 122 is formed on the outer periphery of the insert valve 121.

Such a rubber 122 is molded in a mold, and may be integrally molded using the insert valve 121 as a core material during a molding process.

At this time, an outlet hole 123 for discharging air bubbles is formed on the upper surface of the insert valve 121, and a jiggle valve 150 is installed in the outlet hole 123.

The jiggle valve 150 regulates the outlet hole 123 to block the coolant from flowing into the outlet hole 123 and allows only air bubbles to be discharged through the outlet hole 123 .

At this time, a portion of the rubber 122 may be extended to the inside where the outlet hole 123 is formed so that the inner circumference of the outlet hole 123 is covered.

For example, by covering the inner circumference of the outlet hole 123 with rubber, it is possible to prevent wear due to direct contact with the outlet hole 123 on the insert valve 121 side during the operation of the jiggle valve 150. .

6a and 6b are diagrams illustrating a closed state of the shake reducing jiggle valve according to the present invention, and FIG. 7 is an exemplary view showing an open state of the shake reducing jiggle valve according to the present invention.

Referring to FIGS. 6A, 6B, and 7 , a shake reduction structure in which the jiggle valve 150 is installed in the main valve 120 is disclosed.

The jiggle valve 150 is manufactured in a configuration in which a neck 152 connects between an upper cap 151 and a lower cap 153.

The upper cap 151 and the lower cap 153 are each manufactured in a disk shape having a certain thickness. The upper cap 151 is made thinner than the lower cap 153, and the upper cap 151 The diameter is larger than that of the lower cap 153, and the diameter of the lower cap 153 is larger than the inner diameter of the outlet hole 123 coated with the rubber 122, and the inner diameter of the outlet hole 123 is formed larger than the diameter of the neck 152.

For example, the upper cap 151 contacts the upper outer surface of the outlet hole 123 with a large area, thereby increasing watertight performance, and the diameter of the lower cap 153 is formed to a degree slightly larger than the inner diameter of the outlet hole 123. The lower cap 153 is caught on the outlet hole 123 to prevent the jiggle valve 150 from being separated.

In addition, by minimizing the diameter of the lower cap 153, it is possible to minimize interference with bubbles on a moving path through which bubbles generated at the engine side flow into the outlet hole 123.

In particular, the bottom surface of the upper cap 151 and the upper outer surface of the outlet hole 123 are all formed as flat and smooth surfaces to maximize the mutual contact area, thereby maximizing watertight performance.

Since such a jiggle valve 150 is capable of maintaining a stable posture, shaking does not occur during the descending operation by its own weight and the ascending and descending operation by the rising buoyancy of air bubbles, improving the operating performance of the jiggle valve 150, and the jiggle valve ( 150) and the main valve 120 by minimizing interference and preventing friction and abrasion between members, so that the service life can be increased.

On the other hand, by minimizing the interference and influence of the jiggle valve 150 caused by the flow of cooling water at the upper side of the main valve 120, the shaking phenomenon of the jiggle valve 150 can be reduced once more.

To this end, an extended cap guide space 124 may be formed above the outlet hole 123 so that the upper cap 151 is inserted.

At this time, the height of the cap guide space 124 may be formed to be equal to or slightly smaller than the thickness of the upper cap 151, so that most of the side of the upper cap 151 inserted into the cap guide space 124 is covered. and is protected from interference by cooling water flow.

Meanwhile, the maximum lifting height of the upper cap 151 may be limited to be made within the cap guide space 124 . For example, the upper cap 151 is prevented from leaving the cap guide space 124 even when the upper cap 151 is at the maximum lifting height.

At this time, the maximum lifting height of the upper cap 151 may be set according to the length of the neck 152. That is, in a state in which the upper cap 151 of the jiggle valve 150 descends and comes into contact with the bottom of the cap guide space 124, the cap guide space 124 is higher than the height from the upper surface of the lower cap 153 to the bottom of the outlet hole 123. By forming the height of the higher, it is possible to prevent the upper cap 151 from escaping from the cap guide space 124.

On the other hand, the outer surface of the upper cap 151 is formed to be a vertical surface, and the inner surface of the cap guide space 124 is also formed to be a vertical surface so that when the upper cap 151 moves up and down, it comes into contact with the inner surface of the cap guide space 124 to provide guidance. can be made

At this time, the inner diameter of the cap guide space 124 is made larger than the outer diameter of the upper cap 151 to form a gap G through which air bubbles can escape.

In addition, a part of the upper cap 151 of the jiggle valve 150 may protrude upward from the cap guide space 124. At this time, as shown in FIG. 6A, by minimizing the protruding portion of the upper cap 151, the cooling water Interference by the flow of can be minimized.

In addition, by forming the protruding portion in a streamlined or inclined surface as shown in FIG. 6B, interference caused by the flow of cooling water may be further reduced.

As shown in FIG. 7 , the jiggle valve 150 as described above allows air remaining in the cooling water to flow out when the radiator inlet is closed, and controls the cooling water flowing into the engine.

For example, in a situation where coolant flows from the radiator side to the engine side, that is, in a state in which the main valve 120 is open, the upper cap 151 receives pressure and the outlet hole 123 remains closed, and conversely, the main valve 120 In the closed state, the air bubbles filled in the engine side are driven into the outlet hole 123 and the upper cap 151 is pushed upward to open the valve so that the air bubbles escape.

In this way, after the air bubbles are discharged, the jiggle valve 150 is lowered by its own weight so that the upper cap 151 closes the outlet hole 123.

At this time, the diameter of the outlet hole 123 is formed larger than the diameter of the neck 152 of the jiggle valve 150 so that a gap G exists between the two members. allow you to get out

For example, as soon as the bottom of the top cap 151 falls from the edge surface of the outlet hole 123, an exhaust passage connecting the outlet hole 123 and the gap G is formed, so that air bubbles are quickly discharged.

On the other hand, as shown in FIG. 7, the cooling water may flow in reverse through the exhaust passage connecting the outlet hole 123 and the gap G, but this is converted to the closed position at the maximum peak at which the jiggle valve 150 is opened. limited to a short period of time.

According to the shake-reducing jiggle valve structure of the present invention as described above, the cap guide space 124 provided above the outflow hole 123 of the jiggle valve 150 is used to insert the upper cap 151 so that the cooling water It can be protected from flow, and as a result, the jiggle valve 150 does not shake during the descent operation by its own weight and the elevation operation by the rising buoyancy of bubbles, so the operation performance of the jiggle valve 150 is improved, and the jiggle valve Interference between the 150 and the main valve 120 is minimized to prevent friction and abrasion between members, thereby increasing durability and service life.

In addition, the stable operation of the jiggle valve 150 makes the air flow smoothly, thereby preventing cavitation in the cooling water circulation system and problems caused therefrom, and reducing the warm-up time of the radiator.

And, the valve actuator 130 is installed at the center of the shaft of the main valve 120 as described above. The valve actuator 130 opens the main valve 120 to allow coolant to move from the radiator side to the engine side.

Hereinafter, the valve actuator 130 will be described.

The valve actuator 130 includes a cylinder member 132 coupled through the center of the main valve 120, a piston member 131 inserted into the inner diameter of the cylinder member 132 and operated to move forward and backward, and the main A wax case 133 coupled to the cylinder member 132 at the bottom of the valve 120 and filled with wax 134 therein, and a case holder 135 for coupling the lower end of the wax case 133 to the housing 110. ) is composed of

At this time, a spring member 140 is installed between the main valve 120 and the case holder 135 to push the main valve 120 to maintain a closed state.

For example, while the spring member 140 provides tension to maintain the main valve 120 in a closed state, the valve actuator 130, when the temperature of the coolant that has undergone the heat absorption process in the engine reaches a set temperature or higher, the main valve 120 is opened so that the cooling water is discharged to the engine side and undergoes a heat dissipation process.

As described above, although the embodiments have been described with limited drawings, those skilled in the art can make various modifications and variations from the above description. For example, the described techniques may be performed in an order different from the method described, and/or components of the described system, structure, device, circuit, etc. may be combined or combined in a different form than the method described, or other components may be used. Or even if it is replaced or substituted by equivalents, appropriate results can be achieved.

Therefore, other implementations, other embodiments, and equivalents of the claims are within the scope of the following claims.

1: thermostat 110: housing
111: cooling water inlet 112: cooling water outlet
113: valve gate 120: main valve
121: insert valve 121a: piston coupling part
122: rubber 123: spill hole
124: cap guide space 130: valve actuator
131: piston member 132: cylinder member
133: wax case 134: wax
135: case holder 140: spring member
150: jiggle valve 151: upper cap
152: neck 153: lower cap
G: Gap

Claims (8)

A housing having a coolant inlet connected to the radiator and a coolant outlet connected to the engine;
A main valve that contacts or is separated from the inner circumference of the valve gate formed in the conduit to the cooling water inlet side in a disc shape to open and close the flow path;
a valve actuator installed at the center of the shaft of the main valve to open the main valve to move coolant from the radiator side to the engine side;
A spring member installed between the main valve and the case holder to push the main valve to keep it closed;
In the thermostat including a jiggle valve that is shaft-coupled to the outlet hole formed on the upper surface of the main valve to block the flow of coolant from the engine side into the outlet hole and regulate the outlet hole so that only air bubbles are discharged through the outlet hole ,
The jiggle valve forms a disk-shaped upper cap, a disk-shaped lower cap formed at a position opposite to the upper cap, and a neck connecting the upper cap and the lower cap,
The diameter of the upper cap is larger than the diameter of the lower cap, the diameter of the lower cap is larger than the inner diameter of the outlet hole, and the inner diameter of the outlet hole is larger than the diameter of the neck, so that the top and bottom of the jiggle valve are vertical A jiggle valve structure that reduces shaking of the thermostat so that it maintains a stable posture during directional movement. According to claim 1,
An extended cap guide space is formed above the outflow hole so that the upper cap is inserted, but the height of the cap guide space is equal to or slightly smaller than the thickness of the upper cap so that the upper cap is covered by the cap guide space and coolant flow The jiggle valve structure that reduces vibration of the thermostat to be protected from interference. According to claim 2,
In order to prevent the upper cap from escaping the cap guide space even when the upper cap is at the maximum lifting height, the thermostat vibration reduction jiggle valve structure limits the maximum lifting height of the upper cap to within the cap guide space height. According to claim 3,
The shake reduction jiggle valve structure of the thermostat in which the height of the cap guide space is higher than the height from the top of the lower cap to the bottom of the outlet hole in a state where the upper cap of the jiggle valve descends and contacts the bottom of the cap guide space. According to claim 2,
The outer surface of the upper cap is formed to be a vertical surface, and the inner surface of the cap guide space is also formed to be a vertical surface so that when the upper cap is lifted, it is guided in contact with the inner surface of the cap guide space, and the inner diameter of the cap guide space is smaller than the outer diameter of the upper cap. A jiggle valve structure that reduces vibration of the thermostat by forming a large size to form a gap (G) for air bubbles to escape. According to claim 2,
When a part of the upper cap of the jiggle valve is formed to protrude upward into the cap guide space, the protruding part is formed in a streamlined or inclined surface to prevent interference with the flow of coolant. According to claim 2,
The vibration reduction jiggle valve structure of the thermostat in which the upper outer surface of the outlet hole in contact with the bottom surface of the upper cap is formed as a flat smooth surface to maximize the mutual contact area. According to claim 1,
The main valve is formed of an insert valve in the form of a circular cap and rubber forming an outer shell of the insert valve, a rubber is formed on the outer periphery of the insert valve, and a part of the rubber extends to the inside where the outlet hole is formed to flow out. A jiggle valve structure that reduces vibration of the thermostat so that the inner circumference of the ball is coated.

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