CN113958401B

CN113958401B - Expansion tank of automobile

Info

Publication number: CN113958401B
Application number: CN202111584818.9A
Authority: CN
Inventors: 张振海
Original assignee: XIANGSHAN BOYU AUTO MOLD PLASTIC MANUFACTURE CO Ltd
Current assignee: XIANGSHAN BOYU AUTO MOLD PLASTIC MANUFACTURE CO Ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-04-15
Anticipated expiration: 2041-12-23
Also published as: CN113958401A

Abstract

The application discloses an automobile expansion water tank which comprises an upper tank body, a lower tank body, a cover body, a partition plate and a plurality of locking pieces; the lower end of the lower box body is provided with a liquid outlet in a penetrating way, the upper end of the upper box body is provided with a filling port and a liquid inlet in a penetrating way, and the cover body is detachably arranged at the filling port; the baffle is of a vortex-shaped structure, the lower end of the baffle is arranged on the inner bottom wall of the lower box body, so that the inner bottom of the lower box body is divided into a vortex-shaped flow channel, and the tail end of the flow channel is communicated with the liquid outlet; the retaining member sets up on last box and lower box to box and lower box are gone up in the locking, make and form sealedly between last box and the lower box. This automobile expansion tank's simple structure, the equipment is convenient, need not to punch, and intensity is high, and the leakproofness is good, long service life, and difficult coolant liquid that leads to rocks.

Description

Expansion tank of automobile

Technical Field

The application relates to the technical field of automobile parts, in particular to an automobile expansion water tank.

Background

The expansion water tank of the automobile is an important component in a cooling system of a motor vehicle; when the cooling liquid in the cooling system expands and flows back, a storage space is provided for the cooling liquid; when the cooling system is short of the cooling liquid, the cooling liquid can be supplemented back to the cooling system; meanwhile, gas in the cooling circulation system can be removed, gas-liquid separation is realized, only cooling liquid participates in the cooling circulation, and uneven local heat dissipation of the engine due to the existence of the gas is avoided.

The existing automobile expansion water tank mainly has the following defects: 1. because the cooling liquid has fluidity, the cooling liquid in the expansion water tank greatly shakes in the driving process of the automobile, so that the expansion water tank is easily impacted, and the normal work of the main water tank is easily influenced; 2. due to the existence of machining errors and the deformation of the frame caused by vehicle accidents, the reserved mounting hole positions on the frame are not matched with the mounting hole positions on the expansion water tank, so that the mounting difficulty of the expansion water tank is increased; 3. some expansion tank generally include last box and lower box, go up and adopt the screw to fix between box and the lower box usually, this kind of fixed mode need set up the screw hole on last box and the lower box usually, and this kind of mode of punching can reduce expansion tank's intensity and leakproofness, and expansion tank usually is the working of plastics moreover, leads to the smooth silk of screw thread of screw hole after the dismouting is repeated easily.

Therefore, how to improve the existing expansion tank of the automobile to overcome the above disadvantages is a problem to be solved by those skilled in the art.

Disclosure of Invention

An aim at of this application provides a simple structure, and the equipment is convenient, need not to punch, and intensity is high, and the leakproofness is good, long service life, simple to operate, and the difficult automobile expansion tank that leads to the coolant liquid to rock.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: an automobile expansion water tank comprises an upper tank body, a lower tank body, a cover body, a partition plate and a plurality of locking pieces; a liquid outlet is arranged at the lower end of the lower box body in a penetrating manner, a filling port and a liquid inlet are arranged at the upper end of the upper box body in a penetrating manner, and the cover body is detachably arranged at the filling port; the baffle plate is of a vortex-shaped structure, the lower end of the baffle plate is arranged on the inner bottom wall of the lower box body, so that the inner bottom of the lower box body is divided into a vortex-shaped flow channel, and the tail end of the flow channel is communicated with the liquid outlet; the locking piece is arranged on the upper box body and the lower box body and used for locking the upper box body and the lower box body, so that sealing is formed between the upper box body and the lower box body.

Preferably, the lower end edge of the upper box body extends horizontally outwards to form an upper connecting part, and the upper end edge of the lower box body extends horizontally outwards to form a lower connecting part; the locking piece comprises an upper pressing block, a lower pressing block, a sleeve, a connecting rod and a screw; the sleeve is sleeved at the upper end of the connecting rod in a vertically sliding manner, the upper pressing block is horizontally arranged at the upper end of the sleeve, and the lower pressing block is horizontally arranged at the lower end of the connecting rod; the screw is arranged on the sleeve and the connecting rod and used for locking the sleeve and the connecting rod, so that a clamping area used for clamping the upper connecting part and the lower connecting part is formed between the upper pressing block and the lower pressing block. The advantages are that: when the device is installed, the sleeve is slid up and down, so that the upper pressing block is pressed on the upper connecting part, the lower pressing block is pressed against the lower connecting part, and the sleeve and the connecting rod are locked through the screw, so that the clamping area formed between the upper pressing block and the lower pressing block can clamp the upper connecting part and the lower connecting part, and the upper box body and the lower box body can be assembled; the whole assembly process is convenient to operate, holes do not need to be formed in the upper box body and the lower box body, and the strength of the upper box body and the lower box body and the sealing performance between the upper box body and the lower box body are improved; moreover, the locking mode can be repeatedly disassembled and reused, and the upper box body and the lower box body can be conveniently disassembled for periodic cleaning.

Preferably, a limiting hole penetrates downwards from the upper end face of the sleeve; and the threaded end of the screw penetrates through the limiting hole and then is in threaded connection with the connecting rod. The advantages are that: when the screw is rotated, the sleeve and the connecting rod can be forced to slide relatively, namely, when the screw is screwed down, the clamping area formed between the upper pressing block and the lower pressing block can gradually clamp the upper connecting part and the lower connecting part, so that the installation is more convenient, and the sealing property between the upper box body and the lower box body is improved.

Preferably, the upper end surface of the upper connecting part and the lower end surface of the lower connecting part are provided with anti-falling grooves; the lower terminal surface of going up the briquetting and the up end of briquetting is equipped with the anticreep piece down, the anticreep piece joint in the anticreep falls the inslot. The advantages are that: under the cooperation of the anti-falling groove and the anti-falling block, the stability of contact between the upper pressing block and the upper connecting part and between the lower pressing block and the lower connecting part is improved, and the upper pressing block and the lower pressing block are prevented from falling off.

Preferably, the lower end edge of the upper box body and/or the upper end edge of the lower box body extend outwards horizontally to form a mounting part, and the mounting part is provided with a strip-shaped hole in a penetrating manner along the vertical direction; the automobile expansion water tank also comprises a fixing piece, wherein the fixing piece comprises a fixing rod, a fixing bolt and a mounting bolt; one end of the fixed rod penetrates through the fixing hole, the other end of the fixed rod is upwards provided with a cylindrical guide pillar, and the guide pillar is slidably and rotatably arranged in the elongated hole; the fixing bolt is in threaded connection with the guide pillar, and a clamping area for clamping the mounting part is formed between the fixing bolt and the fixing rod; the mounting bolt is inserted in the fixing hole in a penetrating manner and used for mounting the fixing rod on the frame. The advantages are that: one end of the fixing rod can be pre-installed and fixed in a reserved hole on the frame through the installation bolt, and at the moment, because the automobile expansion water tank is not assembled in place, the space for installing the automobile expansion water tank is just convenient for the connection between the installation bolt and the nut; after the mounting bolt is used for primarily fixing one end of the fixing rod, the automobile expansion water tank is assembled, the long strip-shaped hole in the mounting portion is made to fall on the guide pillar, the position of the automobile expansion water tank is adjusted by rotating and sliding the long strip-shaped hole on the guide pillar, the angle of the fixing rod can be adjusted by slightly loosening the mounting bolt, the automobile expansion water tank is finally assembled in place, and then the mounting bolt and the fixing bolt are screwed down. The whole installation process is simple and convenient to operate, and installation can be achieved when the hole positions reserved on the frame are deviated.

Preferably, the number of the fixing rods is two, and the two fixing rods are arranged in an up-and-down overlapping manner to form a V-shaped structure; the mounting bolt is located below the mounting portion. The advantages are that: when the quantity of dead lever is two, can neither be to car expansion tank's installation produces the influence, can improve again the intensity of mounting and the stability after the installation is fixed. When the mounting bolt is located in the below of installation department, can avoid the mounting bolt with produce the interference between the installation department.

Preferably, the partition plate is detachably connected with the lower box body; the upper end of baffle is equipped with the closing plate, the inside of baffle is equipped with magnet. The advantages are that: because the partition plate is detachably connected with the lower box body, the sealing plate can be arranged at the upper end of the partition plate to seal the upper end of the flow channel, so that the cooling liquid entering through the liquid inlet can only enter through the starting end of the flow channel and flows into the liquid outlet from the tail end of the flow channel, the contact area and the contact time of the cooling liquid and the partition plate can be fully increased, and iron impurities in the cooling liquid can be adsorbed onto the partition plate through the magnet; the cooperation again can dismantle repeatedly and used repeatedly of retaining member, can unpack apart regularly go up the box, take out the baffle is cleaned. In addition, the sealing plate can further limit the coolant from shaking in the flow passage.

Preferably, the inner bottom wall of the lower box body is provided with a vortex-shaped clamping groove, and the lower end of the partition plate is in interference fit with the clamping groove. The advantages are that: the partition board is convenient to assemble and disassemble through interference fit between the partition board and the clamping groove; simultaneously, the draw-in groove can integrated into one piece be in on the interior diapire of box down, the drawing of patterns is convenient, and can improve the intensity of box down.

Preferably, the partition board is integrally formed on the inner bottom wall of the lower box body, and a reinforcing rib is arranged between the partition board and the lower box body. The advantages are that: the partition plate is integrally formed on the inner bottom wall of the lower box body, so that the demoulding is convenient, and the strength of the lower box body can be improved; the reinforcing rib can also be integrally formed, so that the demolding is convenient, and the strength of the lower box body and the impact resistance of the partition plate can be further improved.

Preferably, the upper end of the lower box body gradually shrinks towards the position of the liquid outlet to form a conical structure. The advantages are that: when the liquid level of the cooling liquid in the lower box body is lower, the cooling liquid can also flow to the tail end along the starting end of the flow channel under the action of gravity and finally flows into the liquid outlet.

Preferably, a groove is formed between the upper end face and the side face of the upper box body in a recessed mode, a sensor interface is vertically arranged at the inner bottom of the groove, a sensor probe is connected to the sensor interface, and the lower end of the sensor probe extends to the starting end of the flow channel. The advantages are that: the groove can not only protect the sensor interface and the sensor, but also improve the strength of the upper box body, and the demoulding is convenient when the upper box body is integrally formed; meanwhile, the gap on the side surface of the groove is used for facilitating the connection of the sensor. In addition, the lower extreme of sensor probe extends to the initiating terminal of runner can detect the liquid level of coolant liquid, temperature isoparametric more accurately.

Preferably, the liquid inlet is vertically arranged at the inner bottom of the groove. The advantages are that: on one hand, the liquid inlet can be protected by the groove; on the other hand, the layout mode is convenient for demoulding during integral forming, and the complex side core-pulling mechanism is avoided being arranged on the mould.

Preferably, the automobile expansion water tank further comprises a steering joint arranged on the liquid inlet, and the steering joint comprises a connecting bolt, a connecting sleeve and a limiting ring; the connecting bolt comprises a large head section, a cylindrical section and a threaded section which are sequentially connected from top to bottom, the insides of the cylindrical section and the threaded section are hollow structures, and a through hole is radially arranged on the outer ring surface of the cylindrical section in a penetrating manner; the connecting sleeve is sleeved on the cylindrical section, and the inner annular surface of the connecting sleeve and the outer annular surface of the cylindrical section form sealing; the inner ring surface of the connecting sleeve is coaxially provided with a loop for communicating the through hole, and the outer ring surface of the connecting sleeve is convexly provided with a pipe connector communicated with the loop; the limiting ring is sleeved on the cylindrical section and located below the connecting sleeve, a protective sleeve extends downwards from the peripheral edge of the limiting ring, and the protective sleeve is sleeved on the outer annular surface of the liquid inlet; the thread section is in threaded connection with the inner ring surface of the liquid inlet, and a locking area for locking the connecting sleeve is formed between the large head section and the limiting ring. The advantages are that: when the cooling device is installed, an outlet of a high-temperature cooling liquid pipeline is installed and fixed on the pipe connector, and then the threaded section is connected into the liquid inlet in a threaded mode; and high-temperature cooling liquid sequentially passes through the pipe connector, the annular channel and the through hole and then flows into the liquid inlet along the cylindrical section and the inside of the threaded section. Compared with the mode that the pipeline is directly connected to the liquid inlet, the installation mode has larger operation space and more convenient operation; before the thread section is screwed down, the connecting sleeve is rotationally adjusted to change the direction of the pipe joint, so that the pipeline is just led out along the gap on the side surface of the groove, and the groove is utilized to protect the steering joint and the joint of the pipeline. In addition, the limiting ring can prevent the connecting sleeve from directly contacting the liquid inlet, so that the connecting sleeve and the liquid inlet can be protected while being screwed down; in addition, the protective sheath can be further right the inlet plays the guard action, avoids the screw thread section rotates the in-process and makes the inlet takes place fracture, distortion.

Preferably, an installation groove is formed in the upper end face of the upper box body in a downward mode, and the filling port is formed by extending the inner bottom of the installation groove downwards; the cover body comprises a rotating part and a fixing part, and the fixing part is in threaded connection with the filling port; the rotating part is arranged at the upper end of the fixing part, a gap is arranged between the lower end surface of the rotating part and the inner bottom surface of the mounting groove, and the height of the upper end of the rotating part is lower than or equal to that of the upper end of the mounting groove; a first mounting hole is formed in the lower end face of the fixing portion, a first hole channel is formed in the inner top of the first mounting hole, and the other end of the first hole channel extends to the lower end face of the rotating portion along the interior of the rotating portion; the automobile expansion water tank also comprises a pressure relief valve, and the pressure relief valve comprises a valve body, a valve core and a spring; the valve body is in threaded connection with the first mounting hole, a second mounting hole is formed in the upper end face of the valve body in a downward mode, an inverted circular truncated cone hole is formed in the inner bottom of the second mounting hole in a downward mode, and a second hole channel penetrates through the inner bottom of the inverted circular truncated cone hole in a downward mode; the valve core is connected in the second mounting hole in an up-and-down sliding manner, the lower end of the valve core is contracted to form an inverted circular truncated cone-shaped structure, and a third hole channel penetrates between the side surface of the inverted circular truncated cone-shaped structure and the upper end surface of the valve core; the spring is arranged in the second mounting hole and used for forcing the inverted circular truncated cone-shaped structure to coincide with the inverted circular truncated cone hole, so that the second hole channel is disconnected with the third hole channel. The advantages are that: the structure of the mounting groove is convenient to demould when being integrally formed, and can protect the cover body; when adding and annotating the coolant liquid, the mounting groove can play the funnel effect again, is convenient for add and annotate the coolant liquid. In the use process, when the air pressure in the automobile expansion water tank is within a standard range, the spring forces the valve core to move downwards, so that the inverted circular truncated cone-shaped structure is superposed with the inverted circular truncated cone hole, and at the moment, the second hole channel is disconnected with the third hole channel, so that the leakage of the cooling liquid is prevented; when the air pressure in the automobile expansion water tank is greater than a standard value, the valve core is forced to move upwards by the thrust generated by the gas on the valve core, so that the second pore channel, the inverted circular truncated cone hole, the third pore channel, the second mounting hole and the first pore channel are communicated in sequence, and therefore the pressure relief effect can be achieved, and the automobile expansion water tank is prevented from being burst due to overhigh air pressure; in addition, when the valve body is rotated, the expansion amount of the spring can be changed, so that the pressure value required by the action of the valve core can be adjusted; through will the relief valve is integrated to on the lid to need not go up the box or set up pressure release mechanism alone on the box down, moreover, this kind of relief valve's simple structure, simple to operate, it is with low costs. In addition, because skew on the first pore the one end of first mounting hole extends to the lower terminal surface of rotating part, just the lower terminal surface of rotating part with be equipped with between the interior bottom surface of mounting groove the interval both can avoid the interior bottom surface of mounting groove will first pore is stopped up, can avoid foreign matters such as dust to make again first pore is stopped up.

Compared with the prior art, the beneficial effect of this application lies in: (1) when the cooling device works, high-temperature cooling liquid in the cooling system enters the upper box body through the liquid inlet, gas-liquid separation is realized under the action of gravity, namely, the gaseous cooling liquid floats above the liquid level, and the liquid cooling liquid falls to be mixed with the cooling liquid in the lower box body, so that the cooling purpose is achieved; under the action of the spiral flow channel, the cooling liquid at the bottom in the lower box body always flows to the tail end of the flow channel along the starting end of the flow channel, and finally flows back into the main water box from the liquid outlet.

(2) Under the action of the partition plate with the vortex structure, even if the vehicle jolts relatively in the running process, the cooling liquid in the flow channel is difficult to shake greatly, so that the impact on the automobile expansion water tank is reduced; meanwhile, the cooling liquid at the tail end of the flow channel can cover the liquid outlet all the time, so that the phenomenon that gas is mixed into the liquid outlet due to large-amplitude shaking caused by too little cooling can be avoided, and the normal work of the main water tank is ensured.

(3) Under the effect of retaining member, be convenient for realize go up the box with equipment between the box down, and need not go up the box with punch on the box down, be favorable to improving go up the box with the intensity of box down and the leakproofness between them.

Drawings

Fig. 1 is a perspective view of an expansion tank of an automobile provided by the present application.

Fig. 2 is a partial sectional view of the expansion tank of the automobile of fig. 1 provided in the present application.

Fig. 3 is a partial enlarged view of fig. 2 at I provided herein.

FIG. 4 is an exploded view of the locking member of FIG. 3 provided herein.

FIG. 5 is a cross-sectional view of the locking member of FIG. 3 provided herein.

Fig. 6 is another structural view of the anti-drop groove in fig. 3 provided in the present application.

Fig. 7 is a partial enlarged view of fig. 2 at II provided herein.

Fig. 8 is an exploded view of the lower box and the bulkhead of fig. 1 provided herein.

Fig. 9 is a cross-sectional view of fig. 1 from above as provided by the present application.

Fig. 10 is a cross-sectional view of the baffle plate of fig. 8 integrally formed with a lower case provided by the present application.

Fig. 11 is a partial enlarged view at III in fig. 2 provided herein.

Fig. 12 is a perspective view of the fastener of fig. 11 provided in the present application.

Fig. 13 is an enlarged view of a portion of fig. 2 at IV as provided herein.

Fig. 14 is an exploded view of the steering knuckle of fig. 13 provided herein.

Fig. 15 is an exploded view of the cover of fig. 1 in a bottom view.

Fig. 16 is a top view of the expansion tank of the vehicle of fig. 1 provided in the present application.

FIG. 17 is a cross-sectional view taken along A-A of FIG. 16 as provided herein.

Fig. 18 is an enlarged partial view at V in fig. 17 provided herein.

Fig. 19 is an enlarged view of a portion of fig. 17 at VI provided herein.

Fig. 20 is an enlarged view of a portion of VII in fig. 17 provided herein.

In the figure: 1. an upper box body; 11. a filling port; 12. a liquid inlet; 13. an upper connecting portion; 14. an anti-falling groove; 15. a groove; 16. a sensor interface; 17. a sensor probe; 18. mounting grooves; 2. a lower box body; 21. a liquid outlet; 22. a lower connecting portion; 23. an installation part; 231. a strip-shaped hole; 24. a card slot; 25. reinforcing ribs; 3. a cover body; 31. a rotating part; 32. a fixed part; 321. a first mounting hole; 322. a first duct; 33. a fourth seal ring; 34. a sealing plug; 4. a partition plate; 41. a sealing plate; 42. a magnet; 5. a locking member; 51. pressing the blocks; 511. an anti-falling block; 52. pressing the block; 53. a sleeve; 531. a limiting hole; 54. a connecting rod; 55. a screw; 6. a fixing member; 61. fixing the rod; 611. a fixing hole; 612. a guide post; 62. fixing the bolt; 63. installing a bolt; 7. a steering joint; 71. a connecting bolt; 711. a large head section; 712. a cylindrical section; 7121. a through hole; 713. a threaded segment; 72. connecting sleeves; 721. a loop; 722. a pipe interface; 73. a limiting ring; 731. a protective sleeve; 74. a second seal ring; 8. a pressure relief valve; 81. a valve body; 811. a second mounting hole; 812. rounding the frustum hole; 813. a second duct; 82. a valve core; 821. an inverted truncated cone-shaped structure; 822. a third porthole; 83. a spring; 84. a third seal ring; 9. a first seal ring.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application. The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1-2, an embodiment of the present application provides an expansion tank for an automobile, including an upper tank 1, a lower tank 2, a cover 3, a partition 4, and a plurality of locking members 5; a liquid outlet 21 is arranged at the lower end of the lower box body 2 in a penetrating way, a filling port 11 and a liquid inlet 12 are arranged at the upper end of the upper box body 1 in a penetrating way, and the cover body 3 is detachably arranged at the filling port 11; the partition plate 4 is of a vortex-shaped structure, the lower end of the partition plate 4 is arranged on the inner bottom wall of the lower box body 2, so that the inner bottom of the lower box body 2 is divided into a vortex-shaped flow channel, and the tail end of the flow channel is communicated with the liquid outlet 21; retaining member 5 sets up on last box 1 and lower box 2 to box 1 and lower box 2 are gone up in the locking, make and form sealedly between last box 1 and the lower box 2. When the cooling device works, high-temperature cooling liquid in a cooling system enters the upper box body 1 through the liquid inlet 12, after gas-liquid separation is realized under the action of gravity, gaseous cooling liquid floats upwards right above the liquid level, and liquid cooling liquid falls to be mixed with the cooling liquid in the lower box body 2, so that the cooling purpose is achieved; the cooling liquid located at the bottom of the lower case 2 flows from the start end of the flow passage to the end of the flow passage and finally returns to the main tank through the liquid outlet 21. In addition, under the action of the partition plate 4 with the spiral structure, even if the vehicle runs in a bumpy mode, the cooling liquid in the flow channel is difficult to shake greatly, and the impact on the expansion water tank of the automobile is reduced; meanwhile, the cooling liquid at the tail end of the flow channel can always cover the liquid outlet 21, so that gas is prevented from being mixed into the liquid outlet 21 due to the fact that the cooling liquid greatly shakes when the cooling liquid is too little, and normal work of the main water tank is guaranteed.

Referring to fig. 3 to 5, in some embodiments of the present application, the upper case 1 has an upper coupling portion 13 extending horizontally outward from a lower end edge thereof, and the lower case 2 has a lower coupling portion 22 extending horizontally outward from an upper end edge thereof; the locking piece 5 comprises an upper pressing block 51, a lower pressing block 52, a sleeve 53, a connecting rod 54 and a screw 55; the sleeve 53 is sleeved on the upper end of the connecting rod 54 in a vertically sliding manner, the upper pressing block 51 is horizontally arranged at the upper end of the sleeve 53, and the lower pressing block 52 is horizontally arranged at the lower end of the connecting rod 54; the screw 55 is disposed on the sleeve 53 and the connecting rod 54, and is used for locking the sleeve 53 and the connecting rod 54, so that a clamping area for clamping the upper connecting portion 13 and the lower connecting portion 22 is formed between the upper pressing block 51 and the lower pressing block 52. During installation, the sleeve 53 is slid up and down, so that the upper pressing block 51 is pressed on the upper end of the upper connecting part 13, the lower pressing block 52 is pressed against the lower end of the lower connecting part 22, and the sleeve 53 and the connecting rod 54 are locked by the screw 55, so that a clamping area formed between the upper pressing block 51 and the lower pressing block 52 can clamp the upper connecting part 13 and the lower connecting part 22, and the assembly between the upper box body 1 and the lower box body 2 can be realized; the whole assembly process is convenient to operate, holes do not need to be drilled in the upper box body 1 and the lower box body 2, and the strength of the upper box body 1 and the lower box body 2 and the sealing performance between the upper box body 1 and the lower box body 2 are improved; moreover, the locking mode can be repeatedly disassembled and reused, and the upper box body 1 and the lower box body 2 can be conveniently disassembled for periodic cleaning. As shown in fig. 3, a first seal 9 may be provided between the upper casing 1 and the lower casing 2 in order to improve the sealing between the upper casing 1 and the lower casing 2.

It should be noted that the manner of locking the sleeve 53 and the connecting rod 54 by the screw 55 is also very various, and the following only provides a most preferred embodiment: as shown in fig. 4, a limiting hole 531 is formed through the upper end surface of the sleeve 53; the screw 55 is threaded onto the connecting rod 54 after the threaded end thereof passes through the stopper hole 531. As shown in fig. 5, while rotating the screw 55, the sleeve 53 and the connecting rod 54 can be forced to slide relatively, that is, while tightening the screw 55, the clamping area formed between the upper pressing block 51 and the lower pressing block 52 can gradually clamp the upper connecting portion 13 and the lower connecting portion 22, so that the installation is more convenient, and the sealing performance between the upper box 1 and the lower box 2 can be improved.

Referring to fig. 3, in some embodiments of the present application, the upper end surface of the upper connection portion 13 and the lower end surface of the lower connection portion 22 are provided with anti-dropping grooves 14; the lower end surface of the upper pressing block 51 and the upper end surface of the lower pressing block 52 are provided with anti-falling blocks 511, and the anti-falling blocks 511 are clamped in the anti-falling grooves 14. Under the cooperation of the anti-falling groove 14 and the anti-falling block 511, the contact stability between the upper pressing block 51 and the upper connecting portion 13 and between the lower pressing block 52 and the lower connecting portion 22 is improved, and the upper pressing block 51 and the lower pressing block 52 are prevented from falling off.

It should be noted that the anti-dropping grooves 14 may be disposed along the circumferential direction of the upper connecting portion 13 and the lower connecting portion 22 (as shown in fig. 3), and at this time, the anti-dropping blocks 511 may slide along the circumferential direction of the upper connecting portion 13 (i.e., the lower connecting portion 22), so that an appropriate number of locking members 5 may be installed according to actual needs, and the interval between two adjacent locking members 5 may be adjusted. Of course, the anti-falling groove 14 may be disposed in one-to-one correspondence with the anti-falling blocks 511 (as shown in fig. 6), that is, one anti-falling groove 14 is just clamped to one anti-falling block 511, and at this time, the anti-falling groove 14 may play a role in assisting positioning, so that the installation among the locking members 5 is more uniform, and the interval between two adjacent locking members 5 is ensured to be equal.

Referring to fig. 7-9, in some embodiments of the present application, the partition 4 is removably connected to the lower case 2; a sealing plate 41 is provided at the upper end of the partition plate 4, and a magnet 42 is provided inside the partition plate 4. Because the partition plate 4 is detachably connected with the lower box body 2, a sealing plate 41 can be arranged at the upper end of the partition plate 4 to seal the upper end of the flow channel, so that the cooling liquid entering through the liquid inlet 12 can only enter through the starting end of the flow channel and flows into the liquid outlet 21 from the tail end of the flow channel, the contact area and the contact time of the cooling liquid and the partition plate 4 can be fully increased, and iron impurities in the cooling liquid can be fully adsorbed onto the partition plate 4 through the magnet 42; and the upper box body 1 can be periodically disassembled by matching with the repeated disassembly and reuse of the locking piece 5, and the partition plate 4 is taken out for cleaning. Further, the seal plate 41 may further restrict the coolant from shaking in the flow passage.

It should be noted that there are many ways of detachable connection between the partition 4 and the lower box 2, and the following only provides a preferred embodiment: as shown in fig. 7 to 8, a spiral-shaped locking groove 24 is formed on the inner bottom wall of the lower case 2, and the lower end of the partition plate 4 is fitted into the locking groove 24 in an interference manner. The partition plate 4 is convenient to assemble and disassemble through the interference fit between the partition plate 4 and the clamping groove 24; simultaneously, draw-in groove 24 can integrated into one piece on the interior diapire of box 2 down, and the drawing of patterns is convenient to can improve the intensity of box 2 down.

Referring to fig. 10, in some embodiments of the present application, the partition plate 4 may also be integrally formed on the inner bottom wall of the lower case 2, and a reinforcing rib 25 is provided between the partition plate 4 and the lower case 2. The partition plate 4 is integrally formed on the inner bottom wall of the lower box body 2, so that the demoulding is convenient, and the strength of the lower box body 2 can be improved; the reinforcing ribs 25 can also be integrally formed, so that the demoulding is convenient, and the strength of the lower box body 2 and the impact resistance of the partition plate 4 can be further improved.

Referring to fig. 10, in some embodiments of the present application, the upper end of the lower housing 2 gradually shrinks toward the position of the liquid outlet 21 to form a conical structure. When the liquid level of the cooling liquid in the lower box body 2 is lower, under the action of gravity, the cooling liquid can also flow to the tail end along the starting end of the flow channel and finally flow into the position of the liquid outlet 21 to cover the liquid outlet 21, so that gas is prevented from being mixed in the liquid outlet 21.

Referring to fig. 11 to 12, in some embodiments of the present disclosure, a mounting portion 23 extends horizontally outward from a lower end edge of the upper case 1 and/or an upper end edge of the lower case 2, and an elongated hole 231 penetrates through the mounting portion 23 in an up-down direction; the automobile expansion water tank also comprises a fixing piece 6, wherein the fixing piece 6 comprises a fixing rod 61, a fixing bolt 62 and a mounting bolt 63; one end of the fixing rod 61 penetrates through a fixing hole 611, the other end of the fixing rod 61 is provided with a cylindrical guide post 612 upwards, and the guide post 612 is slidably and rotatably arranged in the elongated hole 231; the fixing bolt 62 is screwed on the guide post 612, and a clamping area for clamping the mounting part 23 is formed between the fixing bolt 62 and the fixing rod 61; the mounting bolt 63 is inserted into the fixing hole 611 and is used to mount the fixing rod 61 on the vehicle frame. When the automobile expansion water tank is installed, one end of the fixing rod 61 can be installed and fixed in a hole reserved on the automobile frame in advance through the installation bolt 63, and at the moment, the space for installing the automobile expansion water tank is just convenient for installation of the bolt 63 and the nut. After the mounting bolt 63 is used for primarily fixing one end of the fixing rod 61, the automobile expansion water tank is assembled, the elongated hole 231 in the mounting part 23 is made to fall on the guide post 612, the position of the automobile expansion water tank is adjusted by rotating and sliding the elongated hole 231 on the guide post 612, the angle of the fixing rod 61 can be adjusted by slightly unscrewing the mounting bolt 63, so that the automobile expansion water tank is finally assembled in place, and then the mounting bolt 63 and the fixing bolt 62 are screwed. The whole installation process is simple and convenient to operate, and even if the hole positions reserved on the frame have deviation, the installation can be realized.

Referring to fig. 11 to 12, in some embodiments of the present application, the number of the fixing bars 61 is two, and the two fixing bars 61 are arranged one on top of the other and form a V-shaped structure. When the mounting bolt 63 is slightly loosened, the included angle between the two fixing rods 61 can be adjusted by rotating, so that the distance between the reserved hole site on the frame and the long strip-shaped hole 231 can be changed, and the mounting can be realized even if the reserved hole site on the frame has deviation; therefore, when the number of the fixing rods 61 is two, the strength of the fixing member 6 and the stability after installation and fixation can be improved without affecting the installation of the expansion tank of the automobile.

Referring to fig. 20, the mounting bolt 63 is positioned below the mounting portion 23 to prevent interference between the mounting bolt 63 and the mounting portion 23. Otherwise, once the mounting bolt 63 is closer to the mounting portion 23, interference between the mounting portion 23 and the mounting bolt 63 may occur.

Referring to fig. 1-2, in some embodiments of the present application, a groove 15 is concavely formed between an upper end surface and a side surface of the upper case 1, a sensor connector 16 is vertically disposed at an inner bottom of the groove 15, a sensor probe 17 is connected to the sensor connector 16, and a lower end of the sensor probe 17 extends to a start end of the flow channel. The groove 15 can not only protect the sensor interface 16 and the sensor, but also improve the strength of the upper box body 1, and the demoulding is convenient when the integral forming is carried out; meanwhile, the gap on the side surface of the groove 15 is used for facilitating the connection of the sensor. In addition, as shown in fig. 9, the lower end of the sensor probe 17 extends to the start end of the flow channel, and thus parameters such as the liquid level and the temperature of the coolant can be detected more accurately.

Referring to FIGS. 1-2 and 13, in some embodiments of the present application, the liquid inlet 12 is disposed vertically at the inner bottom of the recess 15. On one hand, the liquid inlet 12 can be protected by the groove 15; on the other hand, the layout mode is convenient for demoulding during integral forming, and the complex side core-pulling mechanism is avoided being arranged on the mould. It should be noted that the inlet 12 and the sensor interface 16 may be located in the same groove 15, or may be located in two grooves 15 respectively.

Referring to fig. 13-14 in some embodiments of the present application, the expansion tank of the automobile further includes a steering joint 7 disposed on the liquid inlet 12, the steering joint 7 includes a connecting bolt 71, a connecting sleeve 72 and a limit ring 73; the connecting bolt 71 comprises a large head section 711, a cylindrical section 712 and a threaded section 713 which are sequentially connected from top to bottom, the interiors of the cylindrical section 712 and the threaded section 713 are of hollow structures, and a through hole 7121 radially penetrates through the outer annular surface of the cylindrical section 712; the connecting sleeve 72 is sleeved on the cylindrical section 712, and the inner annular surface of the connecting sleeve 72 and the outer annular surface of the cylindrical section 712 form a seal; a ring channel 721 communicated with the through hole 7121 is coaxially arranged on the inner ring surface of the connecting sleeve 72, and a pipe joint 722 communicated with the ring channel 721 is convexly arranged on the outer ring surface of the connecting sleeve 72; the limiting ring 73 is sleeved on the cylindrical section 712 and is positioned below the connecting sleeve 72, a protective sleeve 731 extends downwards from the peripheral edge of the limiting ring 73, and the protective sleeve 731 is sleeved on the outer annular surface of the liquid inlet 12; the threaded section 713 is threadedly connected to the inner annular surface of the liquid inlet 12, and a locking region for locking the connecting sleeve 72 is formed between the large-head section 711 and the limiting ring 73. As shown in fig. 16-18, during installation, the outlet of the high-temperature cooling liquid pipeline is first installed and fixed on the pipe connector 722, the threaded section 713 is then screwed into the liquid inlet 12, and the high-temperature cooling liquid passes through the pipe connector 722, the annular channel 721 and the through hole 7121 in sequence, and then flows into the liquid inlet 12 along the cylindrical section 712 and the interior of the threaded section 713. Compared with the mode of directly connecting the pipeline to the liquid inlet 12, the installation mode has larger operation space and more convenient operation; furthermore, the adjusting nipple 72 can be rotated before the screw thread 713 is screwed in, so as to change the orientation of the pipe connection 722, so that the pipe can be led out just along the notch on the side of the groove 15, and the groove 15 can be used for protecting the steering joint 7 and the joint of the pipe. In addition, the limiting ring 73 can prevent the connecting sleeve 72 from directly contacting the liquid inlet 12, so that the connecting sleeve 72 and the liquid inlet 12 can be protected while being screwed down; in addition, the protection sleeve 731 can further protect the liquid inlet 12, and prevent the liquid inlet 12 from cracking and distorting in the rotation process of the thread segments 713. It should be noted that, in order to improve the sealing performance between the connecting sleeve 72 and the cylindrical section 712, a second sealing ring 74 may be further disposed on the inner annular surface of the connecting sleeve 72 and above and below the annular channel 721 (as shown in fig. 14 and 18).

Referring to fig. 1-2 and 15, in some embodiments of the present application, an upper end surface of the upper tank 1 is provided with a mounting groove 18 downward, and the filling port 11 is formed by extending downward from an inner bottom of the mounting groove 18; the lid body 3 includes a rotating portion 31 and a fixing portion 32, and the fixing portion 32 is screwed into the filler port 11; the rotating part 31 is arranged at the upper end of the fixing part 32, a gap is arranged between the lower end surface of the rotating part 31 and the inner bottom surface of the mounting groove 18, and the height of the upper end of the rotating part 31 is lower than or equal to that of the upper end of the mounting groove 18; a first mounting hole 321 is formed in the lower end surface of the fixing portion 32, a first duct 322 is formed in the inner top of the first mounting hole 321, and the other end of the first duct 322 extends to the lower end surface of the rotating portion 31 along the inside of the rotating portion 31; the automobile expansion water tank also comprises a pressure relief valve 8, and the pressure relief valve 8 comprises a valve body 81, a valve core 82 and a spring 83; the valve body 81 is in threaded connection with the first mounting hole 321, a second mounting hole 811 is formed in the upper end face of the valve body 81 in a downward direction, an inverted circular truncated cone hole 812 is formed in the inner bottom of the second mounting hole 811 in a downward direction, and a second hole 813 penetrates through the inner bottom of the inverted circular truncated cone hole 812 in a downward direction; the valve core 82 is connected into the second mounting hole 811 in a vertical sliding manner, the lower end of the valve core 82 contracts to form a reverse circular truncated cone-shaped structure 821, and a third hole channel 822 penetrates between the side surface of the reverse circular truncated cone-shaped structure 821 and the upper end surface of the valve core 82; the spring 83 is disposed in the second mounting hole 811, and is configured to force the inverted frustum-shaped structure 821 to coincide with the inverted frustum-shaped hole 812, so that the second bore 813 is disconnected from the third bore 822. As shown in fig. 16, 17 and 19, the structure of the mounting groove 18 is convenient for demoulding during integral molding, and can also protect the cover body 3; when the cooling liquid is added, the mounting groove 18 can play a role of a funnel, so that the cooling liquid is conveniently added and injected. In the use process, when the air pressure inside the automobile expansion water tank is within a standard range, the spring 83 forces the valve core 82 to move downwards, so that the inverted-truncated-cone-shaped structure 821 is overlapped with the inverted-truncated-cone-shaped hole 812 (as shown in fig. 19), and at the moment, the second hole 813 is disconnected from the third hole 822, so that the leakage of the cooling liquid is prevented; when the air pressure in the automobile expansion water tank is greater than a standard value, the valve core 82 is forced to move upwards by the thrust generated by the gas on the valve core 82, so that the second hole 813, the inverted circular truncated cone hole 812, the third hole 822, the second mounting hole 811 and the first hole 322 are communicated in sequence, and therefore the pressure relief effect can be achieved, and the automobile expansion water tank is prevented from being burst due to overhigh air pressure; in addition, when the valve body 81 is rotated, the expansion amount of the spring 83 can be changed, so that the pressure value required when the valve core 82 acts can be adjusted; through integrating the lid 3 with relief valve 8 on to need not to set up pressure release mechanism alone on last box 1 or lower box 2, moreover, this kind of relief valve 8's simple structure, simple to operate, it is with low costs. In addition, since the end of the first duct 322 deviating from the first mounting hole 321 extends to the lower end surface of the rotating portion 31 and a space is provided between the lower end surface of the rotating portion 31 and the inner bottom surface of the mounting groove 18, it is possible to prevent the first duct 322 from being blocked by the inner bottom surface of the mounting groove 18 and to prevent the first duct 322 from being blocked by foreign matters such as dust. As shown in fig. 15 and 19, in order to improve the sealing performance between the fixing portion 32 and the fill port 11 and between the inverted truncated cone-shaped structure 821 and the inverted truncated cone-shaped hole 812, a third seal ring 84 (shown in fig. 15) may be fitted to the inverted truncated cone-shaped structure 821, and a fourth seal ring 33 may be fitted to the fixing portion 32; further, when the first bore 322 is mounted, the hole on the side surface of the rotating portion 31 can be closed by the sealing plug 34.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. An automobile expansion water tank is characterized by comprising an upper tank body, a lower tank body, a cover body, a partition plate and a plurality of locking pieces; a liquid outlet is arranged at the lower end of the lower box body in a penetrating manner, a filling port and a liquid inlet are arranged at the upper end of the upper box body in a penetrating manner, and the cover body is detachably arranged at the filling port; the baffle plate is of a vortex-shaped structure, the lower end of the baffle plate is arranged on the inner bottom wall of the lower box body, so that the inner bottom of the lower box body is divided into a vortex-shaped flow channel, and the tail end of the flow channel is communicated with the liquid outlet; the locking piece is arranged on the upper box body and the lower box body and used for locking the upper box body and the lower box body so that sealing is formed between the upper box body and the lower box body;

the edge of the lower end of the upper box body extends horizontally outwards to form an upper connecting part, and the edge of the upper end of the lower box body extends horizontally outwards to form a lower connecting part; the locking piece comprises an upper pressing block, a lower pressing block, a sleeve, a connecting rod and a screw; the sleeve is sleeved at the upper end of the connecting rod in a vertically sliding manner, the upper pressing block is horizontally arranged at the upper end of the sleeve, and the lower pressing block is horizontally arranged at the lower end of the connecting rod; the screw is arranged on the sleeve and the connecting rod and used for locking the sleeve and the connecting rod, so that a clamping area for clamping the upper connecting part and the lower connecting part is formed between the upper pressing block and the lower pressing block;

the partition plate is detachably connected with the lower box body; the upper end of baffle is equipped with the closing plate, the inside of baffle is equipped with magnet.

2. The expansion tank of claim 1, wherein the upper end surface of the sleeve is provided with a limiting hole in a downward penetrating manner; and the threaded end of the screw penetrates through the limiting hole and then is in threaded connection with the connecting rod.

3. The expansion tank for the vehicle as claimed in claim 1, wherein the upper end surface of the upper connection part and the lower end surface of the lower connection part are provided with anti-dropping grooves; the lower terminal surface of going up the briquetting and the up end of briquetting is equipped with the anticreep piece down, the anticreep piece joint in the anticreep falls the inslot.

4. The automobile expansion tank as claimed in claim 1, wherein a mounting portion is horizontally extended outwards from the lower end edge of the upper tank body and/or the upper end edge of the lower tank body, and a strip-shaped hole is vertically penetrated through the mounting portion; the automobile expansion water tank also comprises a fixing piece, wherein the fixing piece comprises a fixing rod, a fixing bolt and a mounting bolt; one end of the fixed rod penetrates through the fixing hole, the other end of the fixed rod is upwards provided with a cylindrical guide pillar, and the guide pillar is slidably and rotatably arranged in the elongated hole; the fixing bolt is in threaded connection with the guide pillar, and a clamping area for clamping the mounting part is formed between the fixing bolt and the fixing rod; the mounting bolt is inserted in the fixing hole in a penetrating manner and used for mounting the fixing rod on the frame.

5. The expansion tank for the vehicle as claimed in claim 4, wherein the number of the fixing rods is two, and the two fixing rods are arranged on top of each other to form a V-shaped structure; the mounting bolt is located below the mounting portion.

6. The expansion tank as claimed in claim 1, wherein a spiral catching groove is formed on an inner bottom wall of the lower tank body, and a lower end of the partition is interference-fitted into the catching groove.

7. The expansion tank as claimed in claim 1, wherein said partition is integrally formed on the inner bottom wall of said lower tank body, and a reinforcing rib is provided between said partition and said lower tank body.

8. The expansion tank as claimed in any one of claims 1 to 7, wherein the upper end of the lower tank body gradually shrinks towards the position of the liquid outlet to form a conical structure;

a groove is formed between the upper end face and the side face of the upper box body in a recessed mode, a sensor interface is vertically arranged at the inner bottom of the groove, a sensor probe is connected onto the sensor interface, and the lower end of the sensor probe extends to the starting end of the flow channel;

the liquid inlet is vertically arranged at the inner bottom of the groove; the automobile expansion water tank also comprises a steering joint arranged on the liquid inlet, and the steering joint comprises a connecting bolt, a connecting sleeve and a limiting ring; the connecting bolt comprises a large head section, a cylindrical section and a threaded section which are sequentially connected from top to bottom, the insides of the cylindrical section and the threaded section are hollow structures, and a through hole is radially arranged on the outer ring surface of the cylindrical section in a penetrating manner; the connecting sleeve is sleeved on the cylindrical section, and the inner annular surface of the connecting sleeve and the outer annular surface of the cylindrical section form sealing; the inner ring surface of the connecting sleeve is coaxially provided with a loop for communicating the through hole, and the outer ring surface of the connecting sleeve is convexly provided with a pipe connector communicated with the loop; the limiting ring is sleeved on the cylindrical section and located below the connecting sleeve, a protective sleeve extends downwards from the peripheral edge of the limiting ring, and the protective sleeve is sleeved on the outer annular surface of the liquid inlet; the thread section is in threaded connection with the inner ring surface of the liquid inlet, and a locking region for locking the connecting sleeve is formed between the large head section and the limiting ring;

an installation groove is formed in the upper end face of the upper box body in a downward mode, and the filling port is formed by downward extending of the inner bottom of the installation groove; the cover body comprises a rotating part and a fixing part, and the fixing part is in threaded connection with the filling port; the rotating part is arranged at the upper end of the fixing part, a gap is arranged between the lower end surface of the rotating part and the inner bottom surface of the mounting groove, and the height of the upper end of the rotating part is lower than or equal to that of the upper end of the mounting groove; a first mounting hole is formed in the lower end face of the fixing portion, a first hole channel is formed in the inner top of the first mounting hole, and the other end of the first hole channel extends to the lower end face of the rotating portion along the interior of the rotating portion; the automobile expansion water tank also comprises a pressure relief valve, and the pressure relief valve comprises a valve body, a valve core and a spring; the valve body is in threaded connection with the first mounting hole, a second mounting hole is formed in the upper end face of the valve body in a downward mode, an inverted circular truncated cone hole is formed in the inner bottom of the second mounting hole in a downward mode, and a second hole channel penetrates through the inner bottom of the inverted circular truncated cone hole in a downward mode; the valve core is connected in the second mounting hole in an up-and-down sliding manner, the lower end of the valve core is contracted to form an inverted circular truncated cone-shaped structure, and a third hole channel penetrates between the side surface of the inverted circular truncated cone-shaped structure and the upper end surface of the valve core; the spring is arranged in the second mounting hole and used for forcing the inverted circular truncated cone-shaped structure to coincide with the inverted circular truncated cone hole, so that the second hole channel is disconnected with the third hole channel.