Clutch with temperature self-checking function

Abstract

The application provides a clutch with a temperature self-checking function applied to the clutch field, a water cooling hose and a temperature checking movable block are connected to the surface of the side of the friction lining away from the pressing plate, and the temperature checking movable blocks are symmetrically arranged in pairs on the surface of the pipe body of the water cooling hose, the temperature checking movable block comprises a thermal expansion rod, and the tail end of the thermal expansion rod is connected with a squeezing ball, the water cooling hose can be adjusted in smoothness through the cooperation of the thermal expansion rod and the squeezing ball, when the friction lining generates a high temperature due to excessive friction, the stretching of the thermal expansion rod can drive the squeezing ball to separate from the squeezing limitation on the water cooling hose, so that the water cooling hose is in a smooth state to automatically meet the water cooling demand, the temperature self-checking function is realized, the installation and use of electronic equipment are reduced, the heat dissipation space of the clutch itself is ensured, the ventilation holes of the diaphragm spring can be combined to provide air cooling and water cooling combined cooling treatment for the friction lining, and the cooling efficiency of the clutch is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the clutch field, in particular to a clutch with temperature self-checking function. BACKGROUND

[0002] The clutch is a device that transmits power by friction, and its effect is to gradually connect the engine and the transmission, so as to ensure the smooth start of the car, and temporarily cut off the connection between the engine and the transmission, so as to facilitate gear shifting and reduce the impact during gear shifting. In addition, when the car is braked urgently, it can play a role in separation, preventing the transmission system from overloading, thereby playing a certain protective role. When the car is braked urgently, the wheels suddenly slow down sharply, and the transmission mechanism connected to the engine still maintains the original speed due to the inertia of rotation, which often generates an inertia torque much larger than the engine torque in the transmission mechanism. At this time, the clutch that relies on friction to transmit torque will heat up sharply, which has a great destructive effect on the friction lining on the surface of the clutch plate.

[0003] In the prior art, in order to ensure the normal use of the friction lining, the friction plate is usually cooled by air cooling or water cooling, and electronic devices such as temperature sensors are used to assist the car to realize temperature self-checking operation of the clutch, so that the temperature self-checking operation of the clutch relies heavily on external electronic systems and electronic auxiliary devices, and the installation of the electronic auxiliary devices will occupy the limited space of the clutch heat dissipation space, so that the heat dissipation efficiency of the clutch is forced to decline, which is not conducive to the heat dissipation operation after the temperature self-checking of the clutch.

[0004] Therefore, we propose a clutch with temperature self-checking function, which can automatically change by means of the temperature change of the friction lining on the surface of the clutch, so as to realize temperature self-checking and reduce the occupation of the clutch heat dissipation space. SUMMARY

[0005] The present application aims to improve the temperature self-checking system of the clutch. Compared with the prior art, a clutch with temperature self-checking function is provided, which can adjust the smoothness of the water cooling hose by the cooperation of the thermal expansion rod and the extrusion ball. When the friction lining generates high temperature due to excessive friction, the stretching of the thermal expansion rod can drive the extrusion ball to separate from the extrusion restriction of the water cooling hose, so that the water cooling hose can be in a smooth state to automatically meet the water cooling demand, realize temperature self-checking, reduce the installation and use of electronic devices, ensure the heat dissipation space of the clutch itself, and provide air cooling and water cooling combined cooling treatment for the friction lining by combining the ventilation hole of the diaphragm spring, thereby ensuring the cooling efficiency of the clutch.

[0006] Further, the end-to-end distance between the two groups of extrusion balls in the initial state of the thermal expansion rod is less than twice the pipe body thickness of the water cooling hose, the extrusion balls are solid spheres made of metal material, and the vertical distance between the two groups of thermal expansion rods is not less than the outer diameter value of the water cooling hose, which ensures the effectiveness of the extrusion blockage and provides sufficient space for the water cooling hose to restore to the unblocked state.

[0007] Further, the inner wall of the water cooling hose is provided with a C-shaped isolation soft plate, and the isolation soft plate separates the inside of the water cooling hose into independent cavities, and a plurality of lifting balls and magnetic balls are arranged in the independent cavities. The lifting ball is an air bag sphere, the inner wall of the water cooling hose is provided with a magnetic sheet corresponding to the independent cavity, and the magnetic sheet and the magnetic ball have magnetic attraction, which changes the cross-sectional shape of the water cooling hose and adjusts the effective contact area between the water cooling hose and the friction lining during operation to meet the temperature self-checking state cooling efficiency adjustment requirement.

[0008] Further, the axis of the magnetic sheet and the independent cavity is perpendicular to the friction lining, and the bottom end of the magnetic sheet is located above the top end of the magnetic ball before the lifting ball is inflated, which can effectively avoid the cross-sectional deformation of the water cooling hose caused by the magnetic attraction between the magnetic ball and the magnetic sheet in the initial state.

[0009] Further, the total bearing capacity of the lifting ball is not less than the total gravity of the magnetic ball, and the diameter of the magnetic ball is greater than the original diameter of the lifting ball, which can stably ensure that the magnetic ball is always above the lifting ball and thus ensure that the lifting ball can smoothly lift the magnetic ball to a position level with the magnetic sheet.

[0010] Optionally, the thermal expansion rod is provided with a concentric cylindrical groove, the inside of the thermal expansion rod is provided with a telescopic metal cover with an outer wall attached to the inner wall of the thermal expansion rod, the inner top wall of the telescopic metal cover is connected with an inflation gas column, and the tail end of the inflation gas column and the telescopic metal cover is connected with the surface of the water cooling hose installed with the friction lining. The contact length of the telescopic metal cover and the inner wall of the thermal expansion rod can be adjusted according to the temperature effect, thereby changing the thermal expansion rate of the thermal expansion rod and enhancing the temperature detection sensitivity of the thermal expansion rod.

[0011] Optionally, the inside of the magnetic sheet is provided with a shielding groove, the inside of the shielding groove is connected with a micro spring, the tail end of the micro spring is connected with a T-shaped magnetic arc plate, and the tail end of the magnetic arc plate extends to the outside of the magnetic sheet. The magnetic arc plate and the magnetic ball have magnetic attraction, which can expand the magnetic attraction area during the continuous rise of the magnetic ball, thereby increasing the cross-sectional deformation degree of the water cooling hose and improving the water cooling efficiency.

[0012] Further, the isolation soft plate is made of high-elasticity heat-conducting material, and the cross-sectional area of the independent cavity is less than two-thirds of the cross-sectional area of the water cooling hose, which stably maintains the magnetic ball and the lifting ball arranged one-to-one with the magnetic sheet, while ensuring the normal flow of water in the water cooling hose.

[0013]

[0013] Further, the arrangement range of the isolation soft plate is arranged separately from the arrangement position of the temperature detection movable block, and the arrangement number of the temperature detection movable block is less than the independent cavity, so as to avoid the extrusion damage of the temperature detection movable block to the lifting ball in the independent cavity.

[0014] Further, the thermal expansion rod is made of a slow elastic deformation material, and the expansion gas column is made of a quick elastic deformation material, so that the thermal expansion rod reduces the elastic force in the subsequent cold shrinkage recovery extrusion clamping, and the extrusion ball can stably extrude and clamp the water cooling hose.

[0015] Compared with the prior art, the advantages of the present application are:

[0016] (1) When the heat dissipation capacity provided by the vent hole of the diaphragm spring itself cannot meet the heat dissipation demand of the clutch plate, the thermal expansion rod is heated and expanded to pull the extrusion ball away from the water cooling hose, so as to automatically start the water cooling mode, so that the clutch plate can have a combined cooling mode of air cooling and water cooling, and the use of electronic temperature measurement equipment and other electronic cooling equipment can be avoided to meet the temperature self-checking and corresponding cooling processing demand of the clutch plate, so as to ensure that the clutch plate has sufficient cooling space.

[0017] (2) When the water cooling mode is started, the lifting ball is heated and expanded to lift the magnetic ball to the height of the magnetic sheet, and then the magnetic attraction can cause the water cooling hose to be compressed in the opposite direction, so as to increase the contact area of the water cooling hose and the back of the friction lining, and further enhance the efficiency of water cooling.

[0018] (3) The bearing capacity of the lifting ball can ensure that the magnetic ball can stably rise when the lifting ball is expanded, and the lifting ball can ensure that the magnetic ball is always above the lifting ball under the action of the diameter difference, so as to ensure the subsequent lifting, smooth adsorption and other operations.

[0019] (4) When the expansion gas column is heated and expanded, the telescopic metal cover is stretched, the contact area of the telescopic metal cover with the inner wall of the thermal expansion rod is increased, and then the heat conduction area of the thermal expansion rod is increased, so as to accelerate the heating progress of the thermal expansion rod and shorten the expansion start time of the thermal expansion rod, and enhance the start sensitivity of the thermal expansion rod.

[0020] (5) With the lifting of the magnetic ball, the uppermost magnetic ball gradually passes over the top end of the magnetic sheet, and then the uppermost magnetic ball attracts the end of the magnetic arc plate to drive the magnetic arc plate to move to the inside of the shielding groove, so as to expand the magnetic attraction area of the magnetic ball, further strengthen the extrusion degree of the water cooling hose, and increase the water cooling contact area. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The present application is a temperature detection movable block extruding the water cooling hose before and after the state schematic diagram;

[0022] Figure 2 The installation schematic diagram of the whole structure of the present application;

[0023] Figure 3 The installation schematic diagram of the friction lining and water cooling hose of the present application;

[0024] Figure 4 The schematic diagram of A in the present application; Figure 3

[0025] Figure 5 The cross-sectional schematic diagram of the water cooling hose of the present application;

[0026] Figure 6 The state schematic diagram of the cross-sectional shape change of the water cooling hose of the present application;

[0027] Figure 7 The internal structure schematic diagram of the thermal expansion rod of the present application;

[0028] Figure 8 The heat transfer path schematic diagram of the thermal expansion rod before and after the stretching of the telescopic metal cover of the present application;

[0029] Figure 9 The internal cross-sectional schematic diagram of the magnetic sheet of the present application;

[0030] Figure 10 The internal state schematic diagram of the magnetic sheet when the magnetic arc plate is separated from the magnetic sheet of the present application.

[0031] Explanation of the figure marks:

[0032] 1, clutch plate; 2, friction lining; 3, pressing plate; 4, diaphragm spring; 5, pressing disc; 6, water cooling hose; 61, isolation soft plate; 62, magnetic ball; 63, lifting ball; 64, magnetic sheet; 641, magnetic arc plate; 642, micro spring; 7, temperature detection movable block; 71, thermal expansion rod; 72, extrusion ball; 711, telescopic metal cover; 712, expansion gas column. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] Embodiment 1:

[0035] The present application provides a clutch with temperature self-detection function, please refer to Figures 1-6 ​The utility model relates to a kind of water-cooled clutch, including clutch plate 1, friction lining 2, pressing plate 3, diaphragm spring 4 with vent and pressure plate 5, annular friction lining 2 is connected to the outer side of clutch plate 1, pressing plate 3 is connected to the outer side of clutch plate 1, pressure plate 5 is installed on the side away from clutch plate 1 of pressing plate 3, diaphragm spring 4 is installed on the inner side of pressure plate 5, the surface of water-cooled hose 6 and temperature detection movable block 7 is connected to the side away from pressing plate 3 of friction lining 2, and temperature detection movable block 7 is symmetrically clamped and arranged on the pipe body surface of water-cooled hose 6 in pair, temperature detection movable block 7 includes thermal expansion rod 71, and thermal expansion rod 71 is connected with extrusion ball 72 at tail end.

[0036] Specifically, the vent in diaphragm spring 4 provides corresponding ventilation space for heat dissipation of friction lining 2, when the temperature of friction lining 2 rises due to friction, and the heat dissipation capacity provided by the vent of diaphragm spring 4 cannot meet the heat dissipation demand of clutch plate 1, the temperature of friction lining 2 rises, and then the thermal expansion rod 71 is heated and expanded to stretch the extrusion ball 72 to separate from the water-cooled hose 6, so that the water-cooled hose 6 in the original extrusion and blockage state restores to the unblocked state, and then the water-cooled cooling mode is started, so that the clutch plate 1 can have a high-efficiency cooling processing mode combining air cooling and water cooling, and the use of electronic temperature measuring equipment and other electronic cooling equipment can be avoided to meet the temperature self-checking and corresponding cooling processing demand of the clutch plate 1, so as to ensure that the clutch plate 1 has sufficient cooling space.

[0037] The end point distance between the two groups of extrusion balls 72 of the thermal expansion rod 71 in the initial state is less than twice the pipe body thickness of the water-cooled hose 6, and the extrusion ball 72 is a solid ball made of metal material, and the vertical distance between the two groups of thermal expansion rods 71 is not less than the outer diameter value of the water-cooled hose 6.

[0038] Specifically, the initial distance between the extrusion balls 72 is less than the pipe body thickness of the water-cooled hose 6, so that the stable extrusion operation of the extrusion ball 72 on the water-cooled hose 6 in the initial state can be ensured, the blockage operation of the water-cooled hose 6 is guaranteed, and the work of the water-cooled system is reduced, even if the water-cooled hose 6 contains water, it is static water, and the cooling effect is limited, and the distance between the thermal expansion rods 71 ensures that the water-cooled hose 6 can smoothly restore to the unblocked state under the elastic action of itself after the extrusion ball 72 leaves the surface of the water-cooled hose 6, so as to start the water-cooled system.

[0039] The inner wall spacing of the water-cooled hose 6 is provided with a C-shaped isolation soft plate 61, and the isolation soft plate 61 isolates the inside of the water-cooled hose 6 into an independent cavity, and a plurality of lifting balls 63 and magnetic balls 62 are arranged in the independent cavity, the lifting ball 63 is an air bag ball, the inner wall of the water-cooled hose 6 is provided with a magnetic sheet 64 corresponding to the independent cavity, and the magnetic sheet 64 and the magnetic ball 62 have magnetic attraction.

[0040] Specifically, when the heat dissipation demand of the clutch plate 1 exceeds the heat dissipation capacity of the diaphragm spring 4, the heat of the friction lining 2 itself is transferred to the water-cooled hose 6 through heat transfer, causing the lifting ball 63 to expand and thus lift the magnetic ball 62. This allows the magnetic ball 62 to rise to the same height as the magnetic plate 64. Then, the magnetic attraction between the magnetic ball 62 and the magnetic plate 64 causes the water-cooled hose 6 to compress in opposite directions, thereby increasing the contact area between the water-cooled hose 6 and the back of the friction lining 2, and thus enhancing the efficiency of water cooling.

[0041] Please see Figure 5 The axis of the magnetic sheet 64 and the independent cavity is perpendicular to the friction lining 2. The bottom end of the magnetic sheet 64 is located above the top of the magnetic ball 62 before the lifting ball 63 expands.

[0042] Specifically, in the initial state of the lifting ball 63, the magnetic ball 62 and the magnetic sheet 64 are at different heights, resulting in a weak magnetic attraction between the magnetic ball 62 and the magnetic sheet 64. This has a weak effect on changing the cross-sectional shape of the water-cooling hose 6, thus ensuring that the water-cooling hose 6 can adjust the water-cooling operation according to the temperature change of the friction lining 2, thereby indirectly achieving the temperature self-checking effect.

[0043] Furthermore, the axis of the magnetic sheet 64 and the independent cavity is perpendicular to the friction liner 2, which allows the surface area of ​​the water-cooled hose 6 to be effectively increased when it becomes elliptical and fits against the back of the friction liner 2, thereby ensuring an increase in the water-cooling contact area.

[0044] The total load-bearing capacity of the lifting ball 63 is not less than the total weight of the magnetic ball 62, and the diameter of the magnetic ball 62 is larger than the original diameter of the lifting ball 63.

[0045] Specifically, the load-bearing capacity of the lifting ball 63 enables it to stably lift the magnetic ball 62 without collapsing due to the weight of the magnetic ball 62, thus ensuring that the magnetic ball 62 can rise stably when the lifting ball 63 expands until it contacts the magnetic sheet 64.

[0046] The diameter of the magnetic ball 62 is larger than that of the lifting ball 63. Therefore, in the independent cavity, the magnetic ball 62 will not fall below the lifting ball 63 in the gap between the lifting balls 63. This ensures that the magnetic ball 62 is always above the lifting ball 63, so as to ensure subsequent lifting, smooth adsorption with the magnetic sheet 64 and other operations.

[0047] Please see Figure 5 The insulating soft plate 61 is made of a highly elastic thermally conductive material, and the cross-sectional area of ​​the independent cavity is less than two-thirds of the cross-sectional area of ​​the water-cooled hose 6.

[0048] Specifically, the isolation soft plate 61 and the inner wall of the water-cooled hose 6 form a closed space, thereby providing stable constraint for the placement position of the lifting ball 62 and the magnetic ball 63 without being affected by the water flow, ensuring that the subsequent magnetic ball 62 can smoothly affect the magnetic ball 62, and the small cross-sectional area of the independent cavity will not affect the normal flow of the water body inside the water-cooled hose 6, ensuring the normal progress of water-cooled cooling.

[0049] Please refer to Figure 2 The arrangement range of the isolation soft plate 61 is spaced apart from the arrangement position of the temperature detection movable block 7, and the arrangement number of the temperature detection movable block 7 is less than the independent cavity.

[0050] Specifically, the isolation soft plate 61 and the temperature detection movable block 7 are not arranged in the same way, so the clamping effect of the temperature detection movable block 7 on the water-cooled hose 6 will not act on the internal lifting ball 63 and magnetic ball 62, ensuring that the lifting ball 63 will not be squeezed and damaged.

[0051] The thermal expansion rod 71 is made of a slow elastic deformation material, and the expansion gas column 712 is made of a quick elastic deformation material.

[0052] Specifically, the recovery speed of the thermal expansion rod 71 is relatively slow compared to the expansion gas column 712, so that when the thermal expansion rod 71 is subsequently cooled and contracted, it will not have obvious rebound and contraction, affecting the clamping stability of the squeezing ball 72 on the water-cooled hose 6, and ensuring the stable operation of the clamping recovery operation.

[0053] Embodiment 2:

[0054] Please refer to Figures 7-8 On the basis of embodiment 1, the thermal expansion rod 71 is provided with a concentric designed cylindrical groove in the inside, the thermal expansion rod 71 is arranged with a telescopic metal cover 711 with its outer wall being in close contact with the inner wall of the thermal expansion rod 71, the inner top wall of the telescopic metal cover 711 is connected with the expansion gas column 712, and the tail ends of the expansion gas column 712 and the telescopic metal cover 711 are connected with the surface of the water-cooled hose 6 installed with the friction lining 2.

[0055] Specifically, when the expansion gas column 712 is heated and expanded, it drives the telescopic metal cover 711 to expand, increasing the contact area of the inner wall of the thermal expansion rod 71, thereby increasing the heat conduction area of the thermal expansion rod 71 to accelerate the heating progress of the thermal expansion rod 71 and shorten the expansion startup time of the thermal expansion rod 71, and strengthen the startup sensitivity of the thermal expansion rod 71.

[0056] Embodiment 3:

[0057] Please refer to Figures 9-10On the basis of embodiment 1, the inside of the magnetic sheet 64 is provided with a shielding slot, the inside of the shielding slot is connected with a micro spring 642, the tail end of the micro spring 642 is connected with a T-shaped magnetic arc plate 641, the tail end of the magnetic arc plate 641 extends to the outside of the magnetic sheet 64, and the magnetic arc plate 641 has magnetic attraction with the magnetic ball 62.

[0058] Specifically, with the lifting of the magnetic ball 62, the uppermost magnetic ball 62 gradually passes over the top end of the magnetic sheet 64, at this time, the uppermost magnetic ball 62 attracts the end of the magnetic arc plate 641 and drives the magnetic arc plate 641 to move to the inside of the shielding slot, expands the magnetic attraction area of the magnetic ball 62, and further strengthens the extrusion degree of the water cooling hose 6 and increases the water cooling contact area.

[0059] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A clutch with a temperature self-checking function, comprising a clutch disc (1), friction lining (2), pressure plate (3), diaphragm spring (4) with ventilation holes, and pressure plate (5), characterized in that, An annular friction lining (2) is connected to the outer side of the clutch plate (1), and a pressure plate (3) is connected to the outer side of the clutch plate (1). A pressure plate (5) is installed on the side of the pressure plate (3) away from the clutch plate (1). A diaphragm spring (4) is installed on the inner side of the pressure plate (5). A water-cooled hose (6) and a temperature detection movable block (7) are connected to the surface of the friction lining (2) away from the pressure plate (3). The temperature detection movable blocks (7) are symmetrically arranged in pairs on the surface of the water-cooled hose (6). The temperature detection movable block (7) includes a thermal expansion rod (71). A compression ball (72) is connected to the tail end of the thermal expansion rod (71). In the initial state, the distance between the endpoints of the two sets of extrusion balls (72) of the thermal expansion rod (71) is less than twice the thickness of the water-cooled hose (6), and the extrusion ball (72) is a solid sphere made of metal material. The vertical distance between the two sets of thermal expansion rods (71) is not less than the outer diameter of the water-cooled hose (6). The inner wall of the water-cooled hose (6) is provided with C-shaped isolation plates (61) at intervals, and the isolation plates (61) isolate the interior of the water-cooled hose (6) into independent cavities. Several lifting balls (63) and magnetic balls (62) are arranged in the independent cavities. The lifting balls (63) are airbag spheres. The inner wall of the water-cooled hose (6) is provided with magnetic sheets (64) corresponding to the independent cavities one by one, and the magnetic sheets (64) and magnetic balls (62) have a magnetic attraction effect. The axis of the magnetic sheet (64) and the independent cavity is perpendicular to the friction lining (2), and the bottom end of the magnetic sheet (64) is located above the top of the magnetic ball (62) before the lifting ball (63) expands.

2. A clutch with temperature self-detection function according to claim 1, characterized in that, The total load-bearing capacity of the lifting ball (63) is not less than the total weight of the magnetic ball (62), and the diameter of the magnetic ball (62) is greater than the original diameter of the lifting ball (63).

3. A clutch with temperature self-detection function according to claim 1, characterized in that, The thermal expansion rod (71) has a concentric cylindrical groove inside. The thermal expansion rod (71) has a telescopic metal cover (711) whose outer wall is in contact with the inner wall of the thermal expansion rod (71). The inner top wall of the telescopic metal cover (711) is connected to an expansion air column (712). The tail ends of the expansion air column (712) and the telescopic metal cover (711) are connected to the surface of the friction lining (2) on which the water-cooled hose (6) is installed.

4. A clutch with temperature self-detection function according to claim 1, characterized in that, The magnetic sheet (64) has a shielding groove inside, and a miniature spring (642) is connected inside the shielding groove. The tail end of the miniature spring (642) is connected to a T-shaped magnetic arc plate (641), and the tail end of the magnetic arc plate (641) extends to the outside of the magnetic sheet (64). The magnetic arc plate (641) and the magnetic ball (62) have a magnetic attraction effect.

5. A clutch with a temperature self-detection function according to claim 1, characterized in that, The isolation soft plate (61) is made of a highly elastic thermally conductive material, and the cross-sectional area of ​​the independent cavity is less than two-thirds of the cross-sectional area of ​​the water-cooled hose (6).

6. A clutch with a temperature self-checking function according to claim 1, characterized in that, The arrangement range of the isolation soft plate (61) is spaced apart from the arrangement position of the temperature detection active block (7), and the number of temperature detection active blocks (7) is less than that of the independent cavity.

7. A clutch with a temperature self-detection function according to claim 3, characterized in that, The thermal expansion rod (71) is made of a slow-elastic deformation material, and the expansion air column (712) is made of a fast-elastic deformation material.

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