TWM579208U - Structure improvement of upper cover of thermostat in internal combustion engine - Google Patents

Abstract

The utility model relates to an improved structure of an upper cover of an internal combustion engine thermostat, which is provided in combination with a thermostat housing connecting a water jacket of a cylinder, a radiator water tank and a water pump, comprising: an upper cover body of the upper cover body of the thermostat having an opposite content slot, which is connected to the upper cover a first-order notch at both ends of the slot, an outlet pipe protruding from a joint flange on the outer peripheral side of the stepped slot, and a plurality of heat-dissipating fins on the outer peripheral side of the upper slot, and the upper slot is connected to the content slot, The stepped slot of the upper cover body of the thermostat is closely attached to the slot end of the thermostat housing, and the thermostat that accommodates the content slot controls whether the coolant in the water pump flows to the cooling water tank to cool down, and the plurality of heat dissipation fins The cooling liquid passing through the inside of the upper tank is cooled to prevent overheating and bursting of the combined structure temperature of the upper cover body and the thermostat outer casing of the thermostat.

Description

Improvement of the upper cover structure of the internal combustion engine thermostat

The present invention relates to the technical field of a temperature regulating device for an internal combustion engine (engine), and more particularly to a thermostat upper cover structure for use in combination with a thermostat housing that communicates a cylinder water jacket, a water pump, and a radiator tank.

Thermostat (also known as water turtle) is a valve that controls the flow of coolant. It is usually placed in the structure of the thermostat housing and the upper cover of the thermostat, and then connected to the internal combustion engine (engine) through the thermostat housing. The cylinder water jacket, the water pump and the heat dissipating water tank can determine the circulation range of the cooling water by opening or closing the flow path of the cooling water by expansion or contraction of the thermostat assembly.

The control mechanism is mainly when the engine has not reached the proper working temperature, the valve of the thermostat will be closed, and the cooling water can only flow between the cylinder water jacket and the water pump, so the cooling water channel is in a state of small circulation, so Helps the engine reach the operating temperature earlier.

Once the working temperature is reached, if the water temperature starts to rise, the thermostat will open the valve to form a large circulation path of the cooling water, even if the cooling water can further flow into the cooling water tank to cool down through the fan; wait until cooling After the temperature of the water drops to the original working temperature, the valve is closed and no further cooling is performed.

The thermostat that controls the cooling water circulation range as described above is one of the consumables, the section The life of the thermostat still has a certain period of use. If it is not replaced on time, the circulation of the cooling water cannot be properly controlled, and the performance of the internal combustion engine (engine) is affected, and the water pipe bursting may further cause the driving safety.

In addition, among the various brand-name engines on the market, there is also a poorly designed combination of the thermostat housing and the thermostat upper cover installed in the thermostat, and it is particularly prone to burst; as shown in the seventh to ninth, one is The conventional thermostat upper cover (50) comprises a metal inner casing (51) and a plastic outer layer (52) coated on the outer side thereof, and the metal inner casing (51) has a receiving groove (511). a slot (512) communicating with the slot (511), a water outlet (513) for communicating the slot (511) with the heat sink, and an extension manifold (514) communicating with the water outlet (513) And the plastic outer layer (52) has a mounting flange (521) surrounding the outer peripheral side of the slot (512), and a second joint (522) connecting the mounting flange (521).

As described above, the conventional inner cover (50) structure is composed of a metal inner casing (51) and a plastic outer layer (52), although the outer cover of the plastic outer layer (52) can reduce the cost, but the metal is coated. The plastic outer layer (52) of the inner casing (51) blocks the inner metal casing (51) from dissipating outward heat, and is disadvantageous for cooling and cooling of the coolant inside the metal inner casing (51) receiving groove (511); The inner working temperature and pressure of the shell (51) and the tank (511) are easily and rapidly increased; and the inner metal shell (51) absorbs heat and conducts heat to the outer layer of the plastic (52), causing the outer layer (52) of the plastic to deteriorate and become embrittled. The mounting flange (521) which causes the outer layer (52) of the plastic to extend around the outer peripheral side of the notch (512) is also prone to rapid embrittlement under the influence of high temperature to break and burst.

Therefore, how to solve the above-mentioned conventional thermostat upper cover structure is not conducive to the cooling and cooling of the coolant passing through the inside of the cavity, thereby causing the internal working temperature and pressure of the metal inner casing to rise rapidly; and the mounting flange of the plastic outer layer is easily deteriorated and disconnected. Improved creation due to shortcomings such as bursting Those are the difficult points to solve in this case.

The main purpose of this creation is to make the upper body of the thermostat not like the conventional structure of the coated plastic outer layer, which is deteriorated due to overheating of the internal temperature, causing the internal coolant to be effectively cooled and cooled to extend the durability. The use of years is progressive.

In order to achieve the above purpose and effect, the upper cover structure of the internal combustion engine thermostat is improved, and is provided in combination with a thermostat housing connecting the cylinder water jacket, the heat dissipation water tank and the water pump, including: the upper cover body of the thermostat has an upper tank, and a first-order notch communicating with the upper receiving groove, a water outlet portion, and a joint flange protruding from the outer peripheral side of the stepped slot, and a plurality of heat-dissipating fins on the outer peripheral side of the upper groove, the thermostat upper cover The stepped slot of the body is close to the cover of the thermostat housing, and the upper slot communicates with the inside of the thermostat housing, and the plurality of heat dissipation fins cool down the coolant passing through the interior of the upper tank to prevent the section A burst caused by overheating of the internal temperature of the upper body of the heater.

According to the above description of the present invention, a further technical feature of the present invention is that the joint flange has a plurality of joint portions, the plurality of joint portions respectively have a set of holes, and each set of holes respectively sets a screw for screwing the joint Thermostat housing.

According to the above description of the present invention, a further technical feature of the present invention is that the plurality of heat dissipating fins are disposed on the outer peripheral side of the cover body on the opposite upper slot and are respectively parallel to the joint flange, and the plurality of heat dissipation holes are respectively The fins are respectively recessed with a plurality of avoidance notches facing the respective screws to avoid interference of assembly of the screws.

According to the above description of the present invention, a further technical feature of the present invention is that the water outlet further has an extended manifold connected, and the extended manifold has An internal thread located on the inner tube wall.

According to the above description of the present invention, a further technical feature of the present invention is that the upper cover body of the thermostat is made of aluminum alloy.

[this creation]

(10) ‧ ‧ tempering upper cover body

(11) ‧‧‧上容槽

(12) ‧‧‧ stepped notches

(13) ‧‧‧Water Department

(131)‧‧‧Extended manifold

(1311)‧‧‧ internal thread

(14) ‧ ‧ joint flange

(141)‧‧‧ screws

(142) ‧ ‧ joints

(143) ‧ ‧ set of holes

(15)‧‧‧Heat fins

(151) ‧ ‧ avoid gap

(20) ‧ ‧ thermostat housing

(21) ‧‧‧Content slots

(22) ‧‧‧ notch end

(23) ‧ ‧ thermostat

(231)‧‧‧Installation flange

(232) ‧‧‧ leaking ring

(24) ‧ ‧ take over

(25)‧‧‧Connectors

(30) ‧‧‧Water pump

(31)‧‧‧ pipe joints

[study]

(50) ‧ ‧ thermostat cover

(51)‧‧‧Metal inner casing

(511) ‧‧‧ 容容

(512)‧‧‧ Notch

(513)‧‧‧Waterway

(514) ‧‧‧Extended manifold

(52) ‧‧‧Plastic outer layer

(521)‧‧‧Installation flange

(522) ‧ ‧ Joint Department

(5221)‧‧‧Metal bushing

The first picture is a three-dimensional diagram of the creation.

The second picture is a three-dimensional diagram of another perspective of the creation.

The third figure is a schematic cross-sectional view of the line III-III of the second figure.

The fourth figure is a schematic cross-sectional view of the line IV-IV of the second figure.

The fifth figure is a three-dimensional exploded view of the creation and use of the creation.

The sixth figure is a partial cross-sectional view of the creation and use of the creation.

The seventh figure is a schematic perspective view of a conventional thermostat upper cover.

The eighth figure is a schematic cross-sectional view of the seventh section VIII-VIII.

The ninth figure is a schematic cross-sectional view of the line IX-IX of the seventh figure.

In order to achieve the above-mentioned purpose and effect, and the technical means and structure adopted, the present invention will be described in detail with reference to the embodiments of the present invention.

Please refer to the first to third figures to improve the structure of the upper cover of the internal combustion engine thermostat, and provide a thermostat housing (20) combined with the water jacket of the cylinder, the radiator tank and the water pump (30). 20) having a content slot (21) and a slot end (22), the content slot (21) housing a thermostat (23), whereby the combination can control the coolant in the radiator tank and the water pump (30) Flow cycle range, including: The upper cover body (10) has an upper receiving groove (11) opposite to the content groove (21), a first-order notch (12) communicating with the upper receiving groove (11), and a water outlet portion (13), convex a joint flange (14) disposed on the outer peripheral side of the stepped slot (12), and a plurality of heat radiating fins (15) on the outer peripheral side of the upper recess (11), the step of the upper cover body (10) of the thermostat The slot (12) is in close contact with the slot end (22) of the thermostat housing (20), and the upper slot (11) communicates with the content slot (21) and is received through the content slot (21). The thermostat (23) controls whether the coolant in the water pump (30) flows to the heat sink to cool down, and the plurality of fins (15) cool down the coolant passing through the inside of the upper tank (11) to prevent the temperature. A burst caused by overheating of the internal temperature of the upper cover body (10).

The foregoing is the main technical feature of the present embodiment, which corresponds to the content of the first item of the patent application scope of the present application, and the purpose and implementation form of the present invention are known in detail, and the technical features described in the remaining subsidiary patent scopes are The detailed description or additional technical features of the first content of the patent application scope, and not to limit the scope of the first paragraph of the patent application scope, it should be noted that the first item of the patent application scope of the present application does not necessarily include the scope of the remaining subsidiary patents. Technical characteristics.

Further, according to the above description, the present invention further extends other technical features, which are respectively described in the next one: the characteristics of each component of the creation are further described below. In the above first to fifth figures, the combined convexity The edge (14) has a plurality of joints (142), the plurality of joints (142) respectively having a set of holes (143), and each set of holes (143) is respectively sleeved with a screw (141) for screwing the thermostat Housing (20). Next, the plurality of heat dissipating fins (15) are disposed at intervals on the outer peripheral side of the upper cover body (10) of the upper housing (11) and are respectively parallel to the joint flange (14), and the plurality of heat dissipating fins ( 15) A plurality of avoidance notches (151) facing the respective screws (141) are recessed to avoid interference of assembly of the screws (141). Furthermore, the water outlet portion (13) is further connected An extension manifold (131), and the extension manifold (131) has an internal thread (1311) on the inner tube wall. Moreover, the thermostat upper cover body (10) is made of aluminum alloy.

As shown in the fifth figure, the thermostat housing (20) is further provided with a connector (24) connecting the content slot (21) and the water pump (30) and a connector connected to the cylinder water jacket (not shown). (25), the water pump (30) is also provided with a pipe joint (31) for communicating to a cylinder water jacket (not shown), and the thermostat (23) has a mounting flange (231) and a sleeve A leak-stop ring (232) of the mounting flange (231); the upper cover body (10) of the creation thermostat is used for loading the thermostat in the content slot (21) provided in the thermostat housing (20) (23), the stepped slot (12) of the thermostat upper cover body (10) is closely closed with the slot end (22) of the thermostat housing (20) to make the thermostat (23) A mounting flange (231) and a leakage stop ring (232) that is sleeved against the mounting flange (231) are located in the slot end (22) of the thermostat housing (20) and the opposite stepped slot (12) and The plurality of screws (141) piercing the flange (14) are screwed to fix the slot end (22), and the water outlet portion (13) is coupled to the heat dissipation water tank (not shown) to form a sixth figure. Show the installation structure.

In the fifth and sixth structural combinations, the upper tank (11) is connected to the content tank (21) of the thermostat casing (20), and the water portion (13) is connected to the radiator tank (not shown). According to the thermostat (23) that can be accommodated through the content tank (21), whether the coolant in the water pump (30) flows to the radiator tank (not shown) for large cycle cooling, or only in the thermostat A small cycle is performed between the outer casing (20) and the water pump (30). Moreover, whether it is a large cycle or a small cycle, the cooling fins passing through the upper cavity (11) can be cooled by the plurality of heat dissipation fins (15), so that the upper cover body (10) of the thermostat is not like a cladding bond. The conventional structure of the plastic outer layer is cracked due to overheating and embrittlement due to overheating of the internal temperature.

As described above, the upper cover body (10) of the present thermostat is located on the opposite upper slot (11) The plurality of heat-dissipating fins (15) on the outer peripheral side can surely break through the difficulties and shortcomings of the current cover of the current thermostat (commonly known as water turtle) in the development of heat dissipation technology, and reach through the heat-reinforcing fins (15). The cooling of the coolant passing through the inside of the upper tank (11) is cooled, effectively preventing the top cover body (10) of the thermostat from bursting due to overheating of the temperature, and the progress of extending the durability is achieved.

The above description is only a preferred embodiment for explaining the present creation, and is not intended to impose any form limitation on the creation, so that any modification related to the creation in the same creative spirit is made. Or the changer, other types that can be implemented according to the same effect, should still be included in the scope of protection of this creative intention.

In summary, the creation of the "inner engine thermostat top cover structure improvement" is practically and cost-effective, and it is indeed in line with the needs of industrial development, and the disclosed structural creation is also an unprecedented innovative structure, so Its "novelty" should be undoubtedly considered, and this creation can be more effective than the conventional structure. Therefore, it is also "progressive". It fully complies with the requirements of the application requirements for new patents in the Chinese Patent Law. Patent applications, and please ask the bureau for an early review and give affirmation.

Claims (5)

The utility model relates to an improved structure of an upper cover of an internal combustion engine thermostat, which is provided in combination with a thermostat housing connecting a water jacket of a cylinder, a radiator water tank and a water pump, comprising: an upper cover body of the thermostat having an upper receiving groove and a stepped connection connecting the upper receiving groove a slot, a water outlet portion, and a joint flange protruding from the outer peripheral side of the stepped slot, and a plurality of heat radiating fins on the outer peripheral side of the upper slot, the stepped slot of the thermostat upper cover body is relatively temperature-saving The housing is closely attached to the cover group, and the upper receiving slot communicates with the inside of the thermostat housing, and the plurality of heat dissipating fins cool down the cooling liquid passing through the inside of the upper receiving tank to prevent overheating of the internal temperature of the upper cover body of the thermostat Burst. The structure of the upper cover of the internal combustion engine thermostat according to claim 1, wherein the joint flange has a plurality of joint portions, the plurality of joint portions respectively have a set of holes, and each set of holes respectively sets a screw for screwing the joint temperature Shell. The improved structure of the upper cover of the internal combustion engine of the invention is as claimed in claim 2, wherein the plurality of heat dissipating fins are located at a distance from the outer peripheral side of the upper thermostat on the upper thermostat, and are respectively parallel to the joint flange, and the plurality of heat dissipating fins The sheets are respectively recessed with a plurality of avoidance notches facing the respective screws to avoid interference of assembly of the screws. The structure of the internal combustion engine thermostat upper cover according to claim 1, wherein the water outlet portion further has an extended manifold connected thereto, and the extension manifold has an internal thread located on the inner tube wall. The structure of the upper cover of the internal combustion engine thermostat according to any one of claims 1 to 4, wherein the upper cover body of the thermostat is made of an aluminum alloy.