Cooling liquid kettle
By installing a balance cap in the coolant reservoir and setting up a connecting structure to provide first and second working positions, the problem of difficulty in opening the reservoir lid caused by negative pressure inside the coolant reservoir is solved, and convenient air pressure balancing and reservoir lid opening are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO JIAKAI AUTO SPARE PARTS CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-04-28
AI Technical Summary
The existing coolant reservoir has a problem where negative pressure forms inside when the coolant temperature drops, making it difficult to open the reservoir lid.
A balance cap is installed on the outside of the kettle lid, and a connecting structure is set between the kettle lid and the balance cap, so that the balance cap has a first working position and a second working position. By switching the working positions, air pressure balance is achieved, and external air enters the kettle body to reduce negative pressure.
This effectively reduces the probability that operators will be unable to open the coolant reservoir cap due to excessive negative pressure inside, thus improving operational convenience.
Smart Images
Figure CN224174182U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of components, and more particularly to a coolant reservoir. Background Technology
[0002] The coolant reservoir is a core component of the engine cooling system, and its main function is to regulate coolant circulation to protect the engine and ensure normal operation. Existing coolant reservoirs typically employ a closed structure, with a cap threaded onto the top of the reservoir body.
[0003] When the engine is turned off and begins to cool down, the coolant temperature drops and its volume shrinks. At the same time, some of the coolant in the reservoir is drawn back into the cooling system. This creates a strong negative pressure inside the reservoir. The negative pressure acts on the inside of the reservoir cap, pressing the cap tightly against the opening and increasing the friction required for rotation. This can result in situations where the operator cannot unscrew the cap when adding coolant. Utility Model Content
[0004] In order to reduce the probability that the operator cannot open the cap of the coolant reservoir due to excessive negative pressure inside the reservoir, this application provides a coolant reservoir.
[0005] The coolant reservoir provided in this application adopts the following technical solution:
[0006] A coolant reservoir includes a reservoir body, a reservoir cap threaded onto the top of the reservoir body, and a balance cap mounted on the outside of the reservoir cap. The reservoir cap has an air inlet hole on its side wall, and the balance cap has a balance hole on its side wall. A connecting structure is provided between the reservoir cap and the balance cap, allowing the balance cap to have a first position and a second position. When the balance cap is in the first position, the air inlet hole and the balance hole are misaligned; when the balance cap is in the second position, the air inlet hole and the balance hole are directly opposite each other.
[0007] By adopting the above technical solution, a balance cap is installed on the outside of the coolant reservoir lid. The reservoir lid has an air inlet hole, and the balance cap has a balance hole. A connecting structure is set between the reservoir lid and the balance cap, so that the balance cap has a first position and a second position. When coolant needs to be added and the coolant reservoir is under negative pressure, the operator can use the connecting structure to switch the balance cap from the first position to the second position, so that the air inlet hole and the balance hole are aligned. This allows external air to enter the reservoir and balances the internal and external air pressure, thereby reducing the probability that the operator cannot open the reservoir lid due to excessive negative pressure inside the coolant reservoir.
[0008] Optionally, the connection structure includes an external mounting thread disposed on the outer wall of the lid and an internal mounting thread disposed on the inner wall of the balance cap and engaging with the external mounting thread.
[0009] By adopting the above technical solution, an external thread is provided on the outer wall of the lid and an internal thread is provided on the inner wall of the balance cover. The lid and the balance cover are connected by a threaded structure, which makes the connection strength between the two ideal. At the same time, it is also convenient for the operator to switch the balance cover to the first or second position as needed.
[0010] Optionally, the inner wall of the lid is provided with a fastening thread that engages with the thread of the kettle body. The fastening thread and the mounting internal thread have opposite directions of rotation. The bottom outer wall of the lid is provided with a limiting part. When the balance cover is in the second working position, the balance cover abuts against the limiting part.
[0011] By adopting the above technical solution, the fastening thread on the inner wall of the kettle lid and the installation thread on the inner wall of the balance cover are rotated in opposite directions. Furthermore, a limiting part is provided at the bottom of the kettle lid. When the balance cover is in the second position, it abuts against the limiting part, so that when the operator rotates the balance cover to abut against the limiting part, it is in the second position, which is convenient for positioning. At the same time, the operator can continue to rotate the balance cover to loosen the kettle lid and remove it from the kettle body.
[0012] Optionally, the connecting structure includes an annular groove disposed on the outer wall of the lid and a convex ring disposed on the inner wall of the balance cover and cooperating with the annular groove, wherein the air inlet and the balance through hole are located on the same horizontal plane.
[0013] By adopting the above technical solution, another connection structure is provided. An annular groove is provided on the outer wall of the lid, and a convex ring that cooperates with the annular groove is provided on the inner wall of the balance cover. Furthermore, the air inlet hole on the lid and the balance hole on the balance cover are located on the same horizontal plane. The operator can switch the balance cover to the first or second position by rotating the balance cover horizontally.
[0014] Optionally, the inner peripheral wall of the balance cover is provided with a plunger hole and a ball-head spring plunger is provided in the plunger hole. The outer peripheral wall of the lid is provided with a first annular limiting hole and a second annular limiting hole for the plunger ball of the ball-head spring plunger to engage. When the balance cover is in the first working position, the ball-head spring plunger is engaged in the first annular limiting hole. When the balance cover is in the second working position, the ball-head spring plunger is engaged in the second annular limiting hole.
[0015] By adopting the above technical solution, the first and second annular limiting holes on the outer peripheral wall of the lid can cooperate with the ball spring plunger installed in the plunger hole of the balance cover. When the ball spring plunger is engaged in the first annular limiting hole, the balance cover is in the first position. When the ball spring plunger is engaged in the second annular limiting hole, the balance cover is in the second position, which makes it convenient for the operator to switch and lock the balance cover to different positions as needed.
[0016] Optionally, the outer wall of the lid is provided with a guide groove along the axial direction of the lid, and the bottom end of the guide groove is connected to the first annular limiting hole.
[0017] By adopting the above technical solution, a guide groove is set on the outer wall of the kettle lid and the bottom end of the guide groove is connected to the first annular limiting hole. When installing the balance cover, the operator first aligns the ball-head spring plunger with the guide groove and then installs it downwards onto the kettle lid. The setting of the guide groove facilitates the positioning of the balance cover during installation. After installation, the balance cover is in the first position and does not require additional adjustment.
[0018] Optionally, the connection structure includes an elastic element disposed on the top of the balance cover, the other end of the elastic element abutting against the lid, the balance cover being slidably mounted on the lid, and the air inlet and the balance through hole corresponding to each other in the sliding direction of the balance cover.
[0019] By adopting the above technical solution, another connection structure is provided, in which an elastic element is provided on the top of the balance cover to abut against the lid. The balance cover is slidably installed on the lid, and the air inlet and balance inlet correspond to each other in the sliding direction of the balance cover, so that the operator can switch the balance cover from the first position to the second position by pressing the balance cover.
[0020] Optionally, the inner wall of the balance cover is provided with a positioning ring for abutting against the lid of the kettle. When the balance cover is in the second working position, the positioning ring abuts against the top surface of the lid of the kettle.
[0021] By adopting the above technical solution, a positioning ring for abutting the lid is set on the inner side wall of the balance cover. When coolant needs to be added, the operator presses the balance cover down so that the positioning ring abuts the top surface of the lid, and can quickly switch to the second working position.
[0022] Optionally, the inner wall of the balance cover is provided with several vertical sliding grooves, and the outer wall of the lid is provided with a guide slider that engages with the vertical sliding grooves.
[0023] By adopting the above technical solution, several vertical sliding grooves are set in the circumferential direction of the inner wall of the balance cover, and a guide slider that is inserted and matched with the vertical sliding grooves is set in the outer wall of the lid, so that the balance cover and the lid are fixed in the circumferential direction, so that the operator can drive the lid to rotate by rotating the balance cover.
[0024] Optionally, the inner wall of the balancing through hole is inclined downward in a direction away from the lid.
[0025] By adopting the above technical solution, since the inner wall of the balance hole slopes downward away from the lid, the probability of dust and other impurities in the environment entering the balance lid and the inside of the lid is reduced.
[0026] In summary, this application includes at least one of the following beneficial technical effects:
[0027] 1. A coolant reservoir, wherein a balance cover is installed on the outside of the reservoir lid, and the reservoir lid is provided with an air inlet hole, the balance cover is provided with a balance hole, and a connecting structure is provided between the reservoir lid and the balance cover, so that the balance cover has a first working position and a second working position. The operator can switch the balance cover from the first working position to the second working position through the connecting structure, thereby allowing external air to enter the reservoir body, thereby reducing the probability that the operator cannot unscrew the reservoir lid due to excessive negative pressure inside the coolant reservoir;
[0028] 2. By setting external threads on the outer wall of the lid and internal threads on the inner wall of the balance cover, the lid and the balance cover are connected by a threaded structure, which makes the connection strength of the two ideal. At the same time, it is also convenient for the operator to switch the balance cover to the first or second position as needed.
[0029] 3. By providing another connection structure, an annular groove is provided on the outer wall of the kettle lid, and a convex ring that mates with the annular groove is provided on the inner wall of the balance cover. Furthermore, the air inlet hole on the kettle lid and the balance hole on the balance cover are located on the same horizontal plane, allowing the operator to switch the balance cover to the first or second position by rotating the balance cover horizontally. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the coolant reservoir in Embodiment 1 of this application.
[0031] Figure 2 This is a cross-sectional schematic diagram of the balance cover in the first working position in Embodiment 1 of this application.
[0032] Figure 3 This is a cross-sectional schematic diagram of the balance cover in the second working position in Embodiment 1 of this application.
[0033] Figure 4 This is a cross-sectional schematic diagram of the fit between the lid and the balance lid in Embodiment 2 of this application.
[0034] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle.
[0035] Figure 6 This is a cross-sectional schematic diagram of the fit between the lid and the balance lid in Embodiment 3 of this application.
[0036] Figure 7 It is along 3 in the embodiments of this application Figure 6 A cross-sectional view showing the direction of the arrow along the HH line.
[0037] Explanation of reference numerals in the attached drawings: 1. Kettle body; 2. Kettle lid; 21. Fastening thread; 22. Air inlet hole; 23. External mounting thread; 24. Limiting part; 25. Annular groove; 26. First annular limiting hole; 27. Second annular limiting hole; 28. Guide groove; 29. Guide slope; 210. Guide slider; 3. Balance cover; 31. Balance through hole; 32. Internal mounting thread; 33. Convex ring; 34. Plunger hole; 35. Ball spring plunger; 351. Plunger housing; 352. Plunger spring; 353. Plunger ball; 36. Elastic element; 37. Vertical slide groove; 38. Positioning ring. Detailed Implementation
[0038] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.
[0039] Example 1:
[0040] This application discloses a coolant reservoir. (Refer to...) Figure 1 The coolant reservoir includes a reservoir body 1, a reservoir cap 2 threaded onto the top of the reservoir body 1, and a balance cap 3 mounted on the outside of the reservoir cap 2, wherein a connecting structure is provided between the reservoir cap 2 and the balance cap 3.
[0041] refer to Figure 2 The inner wall of the lid 2 is provided with a fastening thread 21 that engages with the threaded part of the kettle body 1. The side wall of the lid 2 is provided with an air inlet hole 22, and the side wall of the balance cover 3 is provided with a balance through hole 31. The inner wall of the balance through hole 31 slopes downwards away from the lid 2. The connection structure includes an external mounting thread 23 on the outer wall of the lid 2 and an internal mounting thread 32 on the inner wall of the balance cover 3. The lid 2 and the balance cover 3 are connected by threads, resulting in an ideal connection strength.
[0042] refer to Figure 2 and Figure 3 The connecting structure allows the balance cover 3 to have a first position and a second position. When the balance cover 3 is in the first position, the air inlet hole 22 is misaligned with the balance hole 31; when the balance cover 3 is in the second position, the air inlet hole 22 and the balance hole 31 are directly opposite. Simultaneously, a limiting part 24 is provided on the outer wall of the bottom of the lid 2, and the fastening thread 21 and the installation internal thread 32 have opposite directions of rotation. This allows the operator to rotate the balance cover 3 until it abuts the limiting part 24, placing it in the second position. The operator can then continue rotating the balance cover 3 to loosen the lid 2 and detach it from the kettle body 1.
[0043] The implementation principle of a coolant reservoir in this application embodiment is as follows: When coolant needs to be added and the coolant reservoir is under negative pressure, the operator can switch the balance cover 3 from the first position to the second position through the connecting structure, so that the air inlet 22 on the reservoir cover 2 is aligned with the balance throughlet 31 on the balance cover 3, thereby allowing external air to enter the reservoir body 1 and achieving internal and external air pressure balance, thereby reducing the probability that the operator cannot unscrew the reservoir cover 2 due to excessive negative pressure inside the coolant reservoir.
[0044] Example 2:
[0045] The difference between this embodiment and Embodiment 1 lies in the connection structure between the lid 2 and the balance lid 3, and the air inlet 22 and the balance through-hole 31 are located on the same horizontal plane. (Refer to...) Figure 4 and Figure 5 The connecting structure includes an annular groove 25 disposed on the outer side wall of the lid 2 and a convex ring 33 disposed on the inner side wall of the balance cover 3 and cooperating with the annular groove 25. Meanwhile, the outer peripheral wall of the lid 2 is provided with a first annular limiting hole 26 and a second annular limiting hole 27 at intervals. The outer side wall of the lid 2 is provided with a guide groove 28 whose bottom end is connected to the first annular limiting hole 26 along the axial direction of the lid 2. The top of the lid 2 is provided with a guide slope 29 to facilitate the installation of the balance cover 3.
[0046] Reference Figure 4 and Figure 5 The inner circumferential wall of the balance cover 3 has a plunger hole 34, and a ball-head spring plunger 35 is disposed in the plunger hole 34 for engaging with the first annular limiting hole 26 and the second annular limiting hole 27. The axis of the plunger hole 34 is perpendicular to the axis of the balance cover 3. The ball-head spring plunger 35 includes a plunger housing 351, a plunger spring 352 installed in the plunger housing 351, and a plunger ball 353 installed in the plunger housing 351. Under the action of the plunger spring 352, the plunger ball 353 always tends to protrude from the plunger housing 351, so that the plunger ball 353 can engage with the first annular limiting hole 26 and the second annular limiting hole 27 of the lid 2. When the balance cover 3 is in the first position, the ball spring plunger 35 is engaged with the first annular limiting hole 26. When the balance cover 3 is in the second position, the ball spring plunger 35 is engaged with the second annular limiting hole 27, so that the operator can switch and lock the balance cover 3 to different positions as needed.
[0047] Example 3:
[0048] The difference between this embodiment and Embodiments 1 and 2 lies in the connection structure between the lid 2 and the balance cover 3, and the air inlet 22 and the balance through-hole 31 correspond to each other in the sliding direction of the balance cover 3. (Refer to...) Figure 6 and Figure 7The connecting structure includes an elastic element 36 disposed on the top of the balance cover 3. In this embodiment, the elastic element 36 is a spring, and the other end of the elastic element 36 abuts against the top surface of the lid 2. The inner sidewall of the balance cover 3 is provided with several vertical sliding grooves 37, and the outer sidewall of the lid 2 is provided with a guide slider 210 that engages with the vertical sliding grooves 37, so that the balance cover 3 can be slidably installed on the lid 2 and the circumferential displacement of the balance cover 3 is restricted.
[0049] Reference Figure 6 The inner wall of the balance cover 3 is provided with a positioning ring 38. When the operator presses the balance cover 3 down until the positioning ring 38 abuts against the top surface of the balance cover 3, the balance cover 3 is in the second working position, and the air inlet hole 22 is directly opposite the balance hole 31, so that the air pressure inside and outside the kettle body 1 can be balanced.
[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A coolant reservoir, characterized in that, The device includes a pot body (1), a pot lid (2) threaded onto the top of the pot body (1), and a balance cover (3) mounted on the outside of the pot lid (2). The side wall of the pot lid (2) is provided with an air inlet hole (22), and the side wall of the balance cover (3) is provided with a balance through hole (31). A connecting structure is provided between the pot lid (2) and the balance cover (3), which enables the balance cover (3) to have a first working position and a second working position. When the balance cover (3) is in the first working position, the air inlet hole (22) and the balance through hole (31) are misaligned. When the balance cover (3) is in the second working position, the air inlet hole (22) and the balance through hole (31) are directly opposite each other.
2. A coolant reservoir according to claim 1, characterized in that, The connection structure includes an external mounting thread (23) disposed on the outer side wall of the lid (2) and an internal mounting thread (32) disposed on the inner side wall of the balance cover (3) and cooperating with the external mounting thread (23).
3. A coolant reservoir according to claim 2, characterized in that, The inner wall of the lid (2) is provided with a fastening thread (21) that is threaded to the body (1). The fastening thread (21) and the mounting internal thread (32) have opposite directions of rotation. The bottom outer wall of the lid (2) is provided with a limiting part (24). When the balance cover (3) is in the second working position, the balance cover (3) abuts against the limiting part (24).
4. A coolant reservoir according to claim 1, characterized in that, The connecting structure includes an annular groove (25) disposed on the outer side wall of the lid (2) and a convex ring (33) disposed on the inner side wall of the balance cover (3) and cooperating with the annular groove (25). The air inlet hole (22) and the balance hole (31) are located on the same horizontal plane.
5. A coolant reservoir according to claim 4, characterized in that, The inner peripheral wall of the balance cover (3) is provided with a plunger hole (34) and a ball spring plunger (35) is provided in the plunger hole (34). The outer peripheral wall of the lid (2) is provided with a first annular limiting hole (26) and a second annular limiting hole (27) for the plunger ball (353) of the ball spring plunger (35) to engage. When the balance cover (3) is in the first working position, the ball spring plunger (35) is engaged in the first annular limiting hole (26). When the balance cover (3) is in the second working position, the ball spring plunger (35) is engaged in the second annular limiting hole (27).
6. A coolant reservoir according to claim 5, characterized in that, The outer wall of the lid (2) is provided with a guide groove (28) along the axial direction of the lid (2), and the bottom end of the guide groove (28) is connected to the first annular limiting hole (26).
7. A coolant reservoir according to claim 1, characterized in that, The connection structure includes an elastic element (36) disposed on the top of the balance cover (3), the other end of the elastic element (36) abutting against the lid (2), the balance cover (3) being slidably mounted on the lid (2), and the air inlet (22) and the balance inlet (31) corresponding to each other in the sliding direction of the balance cover (3).
8. A coolant reservoir according to claim 7, characterized in that, The inner wall of the balance cover (3) is provided with a positioning ring (38) for abutting against the lid (2). When the balance cover (3) is in the second working position, the positioning ring (38) abuts against the top surface of the lid (2).
9. A coolant reservoir according to claim 7, characterized in that, The inner wall of the balance cover (3) is provided with several vertical sliding grooves (37) and the outer wall of the lid (2) is provided with a guide slider (210) that is inserted and cooperates with the vertical sliding grooves (37).
10. A coolant reservoir according to claim 1, characterized in that, The inner wall of the balance through hole (31) slopes downward toward the direction away from the lid (2).