A small thermostat device for a motorcycle

Abstract

The present application relates to engine cooling device technical field, specifically to a kind of small thermostat device for motorcycle, including shell, water inlet, top cover, large circulation water outlet, small circulation water outlet, four petal guide ribs, wax package, push rod and spring;The wax package includes temperature sensing copper shell, rubber tube, gland and seal ring;When engine coolant temperature is lower, coolant enters into shell from water inlet, then passes through the gap between four petal guide ribs, finally is discharged from small circulation water outlet;When engine coolant temperature rises to full open temperature, paraffin volume expands, pushes push rod, generates reaction force, wax package moves down, under the support and guide of four petal guide ribs, moves linearly, when moving to set distance, temperature sensing copper shell outer circle is contacted with small circulation circular hole, realizes small circulation water channel closing function, to realize the function of closing small circulation water channel under full open temperature without sub-valve structure, satisfy the layout of narrow space.

Description

Technical Field

[0001] This invention relates to the field of engine cooling device technology, and more particularly to a small thermostat device for motorcycles. Background Technology

[0002] Thermostats are essential components of water-cooled engines and have a wide range of applications. Their basic principles have become general technology, and there are no major technical barriers. The competition in the market mainly comes down to the quality of the detailed design and manufacturing control of each manufacturer in light of the actual operating conditions of the users.

[0003] Traditional thermostat devices employ a structure with a secondary valve to close the small circulating water channel at full open temperature. However, their structure is complex, space-constrained, and relatively expensive, failing to meet the current market's demand for low-cost, space-constrained installations. This is particularly true in the motorcycle market, where the demand for personalized motorcycle designs and limited space further restricts their operation.

[0004] Therefore, there is an urgent need for a small thermostat device that can close the small circulating water channel at full open temperature without the need for a secondary valve structure, thus meeting the requirements of arrangement in confined spaces. Summary of the Invention

[0005] The purpose of this invention is to provide a small thermostat device for motorcycles that can close the small circulating water channel at full open temperature without the need for a secondary valve structure, thus meeting the requirements of arrangement in confined spaces.

[0006] To achieve the above objectives, the present invention provides a small thermostat device for motorcycles, comprising a housing, a water inlet, a top cover, a large circulation outlet, a small circulation outlet, four guide ribs, a wax pack, a push rod, and a spring. The water inlet is connected to one side of the outer shell; the top cover is fixedly installed on the top of the outer shell; the large circulation outlet is connected to one side of the top cover; the small circulation outlet is connected to one side of the outer shell and located below the water inlet; an annular step is provided inside the outer shell; a slot is provided inside the top cover; a small circulation hole is provided at the bottom of the outer shell; the guide mechanism for maintaining the linear movement of the wax pack adopts four guide ribs; the four guide ribs are fixedly installed at the opening of the small circulation hole, and the guide support surface of the four guide ribs is concentric with the small circulation hole; The wax pack includes a temperature-sensitive copper shell, a rubber tube, a cap, and a sealing ring; The temperature-sensing copper shell is disposed inside the outer shell, and the bottom end of the temperature-sensing copper shell is slidably disposed between the four guide ribs; the temperature-sensing copper shell is filled with paraffin wax; the rubber tube is disposed inside the temperature-sensing copper shell; the pressure cap is fixedly disposed on the top of the temperature-sensing copper shell to press down the rubber tube; the sealing ring is fixedly disposed on the temperature-sensing copper shell. The top end of the push rod is inserted into the slot, and the bottom end of the push rod passes through the pressure cap and is inserted into the rubber tube. The push rod and the pressure cap are slidably connected. The spring is sleeved on the temperature-sensitive copper shell. The top end of the spring abuts against the sealing ring, and the bottom end of the spring abuts against the annular step. When the paraffin inside the temperature-sensitive copper shell is heated and the temperature rises, the volume expands, which, together with the push rod, causes the wax pack to move downward.

[0007] The four guide ribs are used to guide the linear movement of the wax pack. A groove is opened between two adjacent guide ribs to facilitate the small circulation of water. The four guide ribs are coaxial with the small circulation hole to achieve a smooth transition of the wax pack into the small circulation hole.

[0008] This invention discloses a small thermostat device for motorcycles. The outer casing has an internal mounting cavity, with a water inlet communicating with the mounting cavity. A top cover is fixedly mounted on the top of the outer casing and also communicates with the mounting cavity. The large circulation outlet is also connected to the top cover. The small circulation outlet is connected to the mounting cavity. Four guide ribs are integrally formed with the outer casing. There are gaps between adjacent guide ribs to allow coolant to pass through. The guide ribs have an arc-shaped cross-section to fit the temperature-sensing copper shell. The bottom end of the temperature-sensing copper shell is slidably inserted between the four guide ribs, preventing it from deviating from its direction during sliding. The four guide ribs provide guidance and support. The temperature-sensing copper shell contains paraffin wax, which acts as a temperature-sensing driving medium and expands in volume when the temperature rises. The rubber tube is relatively soft and inserted into the paraffin wax, with its top held in place by the pressure cap. The top of the push rod is inserted into the slot and constrained, preventing upward movement. The annular step and the sealing ring cooperate to install the spring. Coolant enters the outer casing through the inlet, then passes through the gap between the four guide ribs, and finally exits through the small circulation outlet, forming the small circulation channel; coolant enters the outer casing through the inlet, then enters the top cover, and finally exits through the large circulation outlet, forming the large circulation channel. When the engine coolant temperature is low, the sealing ring presses against the top cover under the action of the spring, preventing communication between the top cover and the outer shell. The coolant enters the outer shell from the inlet, passes through the gaps between the four guide ribs, and finally exits from the small circulation outlet. When the engine coolant temperature rises to the fully open temperature, the paraffin wax expands, squeezing the hose. The hose pushes the push rod upward, but the upper end of the push rod is stuck in the slot and cannot move upward, generating a reaction force that causes the temperature-sensing copper shell to move downward. The temperature-sensing copper shell then moves the sealing ring. The temperature-sensing copper shell moves downwards, away from the top cover. Simultaneously, after moving downwards a certain distance, its lower end blocks the gap between the four guide ribs, thus closing the small circulation channel. Coolant enters the top cover through the gap between the sealing ring and the top cover, and finally exits from the large circulation outlet. When the coolant temperature drops again, the paraffin wax shrinks in volume. Under the action of the spring, the temperature-sensing copper shell moves upwards again, causing the sealing ring to press against the top cover, and the small circulation channel reopens. Therefore, without a secondary valve structure, the function of closing the small circulation channel at full open temperature can be achieved, satisfying the requirements of arrangement in confined spaces. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0010] Figure 1 This is a schematic diagram of a small thermostat device for motorcycles according to the present invention.

[0011] Figure 2 This is a side view of a small thermostat device for motorcycles according to the present invention.

[0012] Figure 3 yes Figure 2 A cross-sectional view along the AA direction.

[0013] Figure 4 yes Figure 3 A magnified view of detail A.

[0014] Figure 5 yes Figure 3 A magnified view of detail B.

[0015] Figure 6 This is a cross-sectional view of a small thermostat device for motorcycles according to the present invention.

[0016] 1-Outer shell, 2-Inlet, 3-Top cover, 4-Large circulation outlet, 5-Small circulation outlet, 6-Guide rib, 7-Temperature-sensing copper shell, 8-Hose, 9-Pressure cap, 10-Push rod, 11-Sealing ring, 12-Spring, 101-Annular step, 102-Small circulation round hole, 301-Slot. Detailed Implementation

[0017] Please see Figures 1-6 ,in, Figure 1 This is a schematic diagram of a small thermostat device for motorcycles according to the present invention. Figure 2 This is a side view of a small thermostat device for motorcycles according to the present invention. Figure 3 yes Figure 2 A cross-sectional view along the AA direction. Figure 4 yes Figure 3 A magnified view of detail A. Figure 5 yes Figure 3 A magnified view of detail B. Figure 6 This is a cross-sectional view of a small thermostat device for motorcycles according to the present invention.

[0018] This invention provides a small thermostat device for motorcycles: comprising a housing 1, a water inlet 2, a top cover 3, a large circulation outlet 4, a small circulation outlet 5, four guide ribs 6, a wax pack, a push rod 10, and a spring 12; the wax pack includes a temperature-sensing copper shell 7, a rubber tube 8, a pressure cap 9, and a sealing ring 11; an annular step 101 is provided inside the housing 1; a small circulation hole 102 is provided at the bottom of the housing 1; a slot 301 is provided inside the top cover 3; the aforementioned solution can achieve the function of closing the small circulation channel at full open temperature without the need for a secondary valve structure, thus satisfying the arrangement in confined spaces.

[0019] Furthermore, the water inlet 2 is connected to one side of the outer shell 1; the top cover 3 is fixedly installed on the top of the outer shell 1; the large circulation outlet 4 is connected to one side of the top cover 3; the small circulation outlet 5 is connected to one side of the outer shell 1 and located below the water inlet 2; an annular step 101 is provided inside the outer shell 1; a slot 301 is provided inside the top cover 3; a small circulation hole 102 is provided at the bottom of the outer shell 1; the guide mechanism for maintaining the linear movement of the wax pack adopts four-lobed guide ribs 6; the four-lobed guide ribs 6 are fixedly installed at the opening of the small circulation hole 102, and the guide support surface of the four-lobed guide ribs 6 is concentric with the small circulation hole 102; The temperature-sensing copper shell 7 is disposed inside the outer shell 1, and the bottom end of the temperature-sensing copper shell 7 is slidably disposed between the four guide ribs 6; the temperature-sensing copper shell 7 is filled with paraffin wax; the rubber tube 8 is disposed inside the temperature-sensing copper shell 7; the pressure cap 9 is fixedly disposed on the top of the temperature-sensing copper shell 7 for pressing down the rubber tube 8; the sealing ring 11 is fixedly disposed on the temperature-sensing copper shell 7. The top end of the push rod 10 is inserted into the slot 301, and the bottom end of the push rod 10 passes through the pressure cap 9 and is inserted into the rubber tube 8. The push rod 10 and the pressure cap 9 are slidably connected. The spring 12 is sleeved on the temperature-sensitive copper shell 7. The top end of the spring 12 abuts against the sealing ring 11, and the bottom end of the spring 12 abuts against the annular step 101. When the paraffin inside the temperature-sensitive copper shell 7 is heated, its volume expands, which, together with the push rod 10, causes the wax pack to move downward.

[0020] In this embodiment, the outer shell 1 has an internal mounting cavity, the water inlet 2 communicates with the mounting cavity, the top cover 3 is fixedly mounted on the top of the outer shell 1 and also communicates with the mounting cavity; the large circulation water outlet 4 also communicates with the top cover 3; the small circulation water outlet communicates with the mounting cavity; the four guide ribs 6 are integrally formed with the outer shell 1; there are gaps between adjacent guide ribs 6 for coolant to pass through, and the cross-section of the guide ribs 6 is arc-shaped to fit the temperature-sensing copper shell 7. The bottom end of the tube 8 is slidably inserted between the four guide ribs 6, so that the temperature-sensing copper shell 7 will not deviate from its direction when it slides. The four guide ribs 6 provide guidance and support. The temperature-sensing copper shell 7 is filled with paraffin wax, which acts as a temperature-sensing driving medium and expands in volume when the temperature rises. The tube 8 is relatively soft and is inserted into the paraffin wax, with its top pressed down by the cap 9. The top of the push rod 10 is inserted into the slot 301 and is constrained, preventing it from moving upward. The annular step 101 and the sealing ring 11 cooperate to install the spring 12. Coolant enters the outer casing 1 through the inlet 2, passes through the gap between the four guide ribs 6, and finally exits through the small circulation outlet 5, which is the small circulation channel; coolant enters the outer casing 1 through the inlet 2, enters the top cover 3, and finally exits through the large circulation outlet 4, which is the large circulation channel. When the engine coolant temperature is low, under the action of the spring 12, the sealing ring 11 presses against the top cover 3, preventing communication between the top cover 3 and the outer shell 1. The coolant enters the outer shell 1 from the inlet 2, passes through the gaps between the four guide ribs 6, and finally exits from the small circulation outlet 5. When the engine coolant temperature rises to the fully open temperature, the paraffin wax expands, squeezing the hose 8. The hose 8 pushes the push rod 10 upward, but the upper end of the push rod 10 is stuck in the slot 301 and cannot move upward, generating a reaction force that causes the temperature-sensing copper shell 7 to move downward. The temperature-sensing copper shell 7 then drives the... The sealing ring 11 moves downward, away from the top cover 3. Simultaneously, the temperature-sensing copper shell 7 moves downward a certain distance, blocking the gap between the four guide ribs 6 at its lower end. At this time, the small circulation channel is closed. Coolant enters the top cover 3 through the gap between the sealing ring 11 and the top cover 3, and finally exits from the large circulation outlet 4. When the coolant temperature drops again, the paraffin wax shrinks in volume. Under the action of the spring 12, the temperature-sensing copper shell 7 moves upward again, causing the sealing ring 11 to press against the top cover 3, and the small circulation channel reopens. Thus, without a secondary valve structure, the function of closing the small circulation channel at full open temperature can be achieved, satisfying the arrangement requirements of confined spaces. The overall configuration is as follows: the wax pack moves, guided by the four guide ribs 6. When the wax pack moves downward a certain distance, it blocks the gap between the four guide ribs 6, at which point the small circulation channel is closed.

[0021] Furthermore, the four guide ribs 6 are used to guide the linear movement of the wax pack. A groove is opened between two adjacent guide ribs 6 to serve as a small circulation water flow function. The four guide ribs 6 are coaxially designed with the small circulation hole 102 to achieve a smooth transition of the wax pack moving into the small circulation hole 102.

[0022] This embodiment describes a small thermostat device for motorcycles. The outer casing 1 has an internal mounting cavity. The water inlet 2 communicates with the mounting cavity. The top cover 3 is fixedly mounted on the top of the outer casing 1 and also communicates with the mounting cavity. The large circulation outlet 4 is also communicated with the top cover 3. The small circulation outlet is communicated with the mounting cavity. The four guide ribs 6 are integrally formed with the outer casing 1. There are gaps between adjacent guide ribs 6 to allow coolant to pass through. The guide ribs 6 have an arc-shaped cross-section to fit the temperature-sensing copper shell 7. The bottom end of the temperature-sensing copper shell 7 is slidably inserted between the four guide ribs 6, so that the temperature-sensing copper shell 7 will not deviate from its direction when sliding, and the four guide ribs 6 provide guidance and support; the temperature-sensing copper shell 7 is filled with paraffin wax, which serves as a temperature-sensing driving medium and expands in volume when the temperature rises; the rubber tube 8 is relatively soft and is inserted into the paraffin wax, with its top pressed down by the cap 9; the top of the push rod 10 is inserted into the slot 301 and is constrained, preventing it from moving upward; the annular step 101 and the sealing ring 11 cooperate to install the spring 12; Coolant enters the outer casing 1 through the inlet 2, passes through the gap between the four guide ribs 6, and finally exits through the small circulation outlet 5, which is the small circulation channel; coolant enters the outer casing 1 through the inlet 2, enters the top cover 3, and finally exits through the large circulation outlet 4, which is the large circulation channel. When the engine coolant temperature is low, under the action of the spring 12, the sealing ring 11 presses against the top cover 3, preventing communication between the top cover 3 and the outer shell 1. The coolant enters the outer shell 1 from the inlet 2, passes through the gaps between the four guide ribs 6, and finally exits from the small circulation outlet 5. When the engine coolant temperature rises to the fully open temperature, the paraffin wax expands, squeezing the hose 8. The hose 8 pushes the push rod 10 upward, but the upper end of the push rod 10 is stuck in the slot 301 and cannot move upward, generating a reaction force that causes the temperature-sensing copper shell 7 to move downward. The temperature-sensing copper shell 7 then drives the... The sealing ring 11 moves downward, away from the top cover 3. At the same time, the temperature-sensing copper shell 7 moves downward a certain distance, and its lower end blocks the gap between the four guide ribs 6. At this time, the small circulation channel is closed. The coolant enters the top cover 3 through the gap between the sealing ring 11 and the top cover 3, and finally exits from the large circulation outlet 4. When the coolant temperature drops again, the paraffin wax shrinks in volume. Under the action of the spring 12, the temperature-sensing copper shell 7 moves upward again, causing the sealing ring 11 to press against the top cover 3, and the small circulation channel reopens. Thus, the function of closing the small circulation channel at full open temperature can be achieved without the auxiliary valve structure, which meets the requirements of arrangement in a small space.

[0023] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A small thermostat device for motorcycles, characterized in that, Includes outer casing, water inlet, top cover, large circulation outlet, small circulation outlet, four guide ribs, wax pack, push rod, and spring; The water inlet is connected to one side of the outer casing; the top cover is fixedly installed on the top of the outer casing; The large circulation outlet is connected to one side of the top cover; the small circulation outlet is connected to one side of the outer shell and located below the inlet; an annular step is provided inside the outer shell; a slot is provided inside the top cover; a small circulation hole is provided at the bottom of the outer shell; the guide mechanism that keeps the wax pack moving in a straight line adopts four guide ribs; the four guide ribs are fixedly provided at the opening of the small circulation hole, and the guide support surface of the four guide ribs is concentric with the small circulation hole; The wax pack includes a temperature-sensitive copper shell, a rubber tube, a cap, and a sealing ring; The temperature-sensing copper shell is disposed inside the outer shell, and the bottom end of the temperature-sensing copper shell is slidably disposed between the four guide ribs; the temperature-sensing copper shell is filled with paraffin wax; the rubber tube is disposed inside the temperature-sensing copper shell; the pressure cap is fixedly disposed on the top of the temperature-sensing copper shell to press down the rubber tube; the sealing ring is fixedly disposed on the temperature-sensing copper shell. The top end of the push rod is inserted into the slot, and the bottom end of the push rod passes through the pressure cap and is inserted into the rubber tube. The push rod and the pressure cap are slidably connected. The spring is sleeved on the temperature-sensitive copper shell. The top end of the spring abuts against the sealing ring, and the bottom end of the spring abuts against the annular step. When the paraffin inside the temperature-sensitive copper shell is heated and the temperature rises, the volume expands, which, together with the push rod, causes the wax pack to move downward.

2. The small thermostat device for motorcycles as described in claim 1, characterized in that, The four guide ribs are used to guide the linear movement of the wax pack. A groove is opened between two adjacent guide ribs to facilitate the small circulation of water. The four guide ribs are coaxial with the small circulation hole to achieve a smooth transition of the wax pack into the small circulation hole.

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