Sensor assembly of expansion water tank
Through the design of limit slots and limit rods, combined with threaded connection and injection molding, the problem of easy falling off of the expansion tank sensor cover is solved, achieving higher connection strength and stability.
Patent Information
- Application Number
- CN202422043015.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The cover of existing expansion tank sensors is prone to falling off due to high temperature and vibration, resulting in insufficient connection strength.
The limiting groove and limiting rod are designed, and the limiting rod on the cover is arranged in the through-channel limiting groove of the shell, combining threaded connection and injection molding to enhance the connection strength between the cover and the shell.
Effectively prevent the cover from falling off, improve the structural strength and connection stability of the sensor, and adapt to harsh working conditions.
Smart Images
Figure CN223125154U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of component housings, and particularly to an expansion tank sensor assembly. Background Art
[0002] An expansion tank needs to be provided in a vehicle cooling system to supplement coolant for the cooling system and buffer the thermal expansion and contraction of the coolant. Usually, a sensor is also provided to monitor the liquid level height of the coolant in the expansion tank through the sensor, and add or remove coolant in a timely manner so that the liquid level height of the coolant in the expansion tank is maintained within a reasonable range. The sensor usually includes a housing, a main board is arranged inside the housing, a reed switch is installed on the main board, a magnetic float that can float on the liquid level of the coolant is arranged in the expansion tank, the sensor is installed on the expansion tank, and when the magnetic float approaches or moves away from the reed switch, a signal can be triggered to monitor the liquid level height. After the main board and the reed switch are installed in the housing, they need to be sealed through a cover. The cover and the housing are completed through an adhesive process. Since the temperature of the expansion tank is relatively high and the vehicle vibrates frequently during driving, the bonding strength is affected, and the cover is likely to fall off. Utility Model Content
[0003] The purpose of this application is to provide an expansion tank sensor assembly with high structural strength, thereby effectively solving the deficiencies existing in the prior art.
[0004] To this end, an embodiment of this application provides an expansion tank sensor assembly, including:
[0005] A housing provided with a receiving cavity for installing a main board;
[0006] A cover for covering the receiving cavity of the housing;
[0007] Wherein, a limiting groove is provided on the housing, and the limiting groove is a channel-like structure that penetrates the housing and has openings at both ends. A limiting rod is provided on the cover, and both ends of the limiting rod are connected to the cover. When the cover covers the receiving cavity, the limiting rod passes through the limiting groove to limit the separation of the cover and the housing.
[0008] In a possible implementation manner, the cover and the limiting rod are of an integrally formed structure.
[0009] In a possible implementation manner, the cover is injection-molded on the housing.
[0010] In a possible implementation manner, the cover can be covered on or away from the housing along a first direction, the direction of the limiting groove is arranged along a second direction, and the first direction and the second direction are perpendicular to each other.
[0011] In a possible implementation, a first clamping edge is provided at a position on the housing close to the opening of the accommodation cavity. The first clamping edge protrudes from the housing. A first clamping groove is provided on the cover body. When the cover body seals the accommodation cavity, the first clamping edge is adapted to be inserted into the first clamping groove to limit the separation of the cover body and the housing. The plane in which the first clamping edge and the first clamping groove are located is perpendicular to the first direction.
[0012] In a possible implementation, the first clamping edge and the first clamping groove are arc-shaped.
[0013] In a possible implementation, a second clamping edge is provided on the housing. The second clamping edge protrudes from the housing. A second clamping groove is provided on the cover body. When the cover body seals the accommodation cavity, the second clamping edge is adapted to be inserted into the second clamping groove to limit the separation of the cover body and the housing. The second clamping edge is arranged parallel to the first clamping edge and is farther away from the opening of the accommodation cavity than the first clamping edge.
[0014] In a possible implementation, an annular groove with an arc-shaped trend is formed between the first clamping edge and the second clamping edge. Notches are formed at positions corresponding to both ends of the annular groove on the housing and on the side facing the first clamping edge, and the notches communicate with the annular groove.
[0015] In a possible implementation, the housing includes a first platform and a second platform. The plane of the first platform is perpendicular to the first direction, and the plane of the second platform is parallel to the first direction and the second direction. When the cover body seals the accommodation cavity, the cover body is located between the first platform and the second platform.
[0016] In a possible implementation, the housing further includes a first part and a second part. The first part is arranged between the first platform and the second platform, and the second part is arranged on the first platform and extends along a direction away from the first part. The opening of the accommodation cavity is located on the side of the first part away from the second part and extends to the second part. The cover body can cover the first part to seal the accommodation cavity, and the limiting groove is located at the intersection of the first platform and the second platform.
[0017] In a possible implementation, the second clamping edge and the first platform are spaced apart, so that a spacer groove is formed between the second clamping edge and the first platform.
[0018] In a possible implementation, a communication port is provided on the second platform, and the communication port communicates with the accommodation cavity.
[0019] In a possible implementation, a first boss and a second boss are oppositely arranged on the outer periphery of the second part to be clamped and connected to the expansion water tank.
[0020] According to the expansion tank sensor assembly provided by the embodiments of the present application, after installing components such as a reed switch and a main board into the accommodation cavity of the housing, the accommodation cavity of the housing is sealed by a cover body. After sealing, the limiting rod on the cover body can be inserted into the limiting groove of the housing, and the limiting groove is a channel-like structure with openings at both ends. The limiting rod and the limiting groove are inserted and engaged with each other, greatly increasing the connection strength between the cover body and the housing, and preventing the cover body from falling off the housing. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a schematic structural diagram of the expansion tank sensor assembly provided by the embodiments of the present application;
[0022] Figure 2 is Figure 1 a partial enlarged view of A in
[0023] Figure 3 is a schematic structural diagram of the expansion tank sensor assembly from another perspective provided by the embodiments of the present application;
[0024] Figure 4 is an exploded view of the expansion tank sensor assembly provided by the embodiments of the present application;
[0025] Figure 5 is a schematic structural diagram of the housing provided by the embodiments of the present application;
[0026] Figure 6 is Figure 5 a partial enlarged view of B in
[0027] Figure 7 is a schematic structural diagram of the cover body provided by the embodiments of the present application;
[0028] Figure 8 is a schematic structural diagram of the expansion tank sensor assembly from another perspective provided by the embodiments of the present application;
[0029] Figure 9 is Figure 8 a partial enlarged view of C in
[0030] Figure 10 is a schematic structural diagram of the plug-in sleeve provided by the embodiments of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.
[0032] As Figures 1 - 10 shown, an expansion tank sensor assembly provided by an embodiment of the present application is applied to a vehicle cooling system to monitor the liquid level height of the coolant in the expansion tank of the vehicle cooling system. The conventional expansion tank sensor includes a housing and a cover. The housing is used to accommodate a main board 90. A reed switch 91 is installed on the main board 90. After the main board 90 and the reed switch 91 are installed in the housing, they are sealed with a cover, and then the housing is fixed on the expansion tank. A magnetic float is arranged in the expansion tank. When the magnetic float approaches the reed switch 91, it can generate a signal. Thus, the magnetic float floating on the liquid surface of the coolant and the reed switch 91 cooperate to monitor the liquid level height of the coolant. However, the existing sensor housing and the cover are connected by an adhesive process. Since the temperature of the coolant in the expansion tank is relatively high, the temperature of the expansion tank is also relatively high. Moreover, the vehicle generates frequent bumpy vibrations during driving, which affects the bonding strength of the adhesive, making it easy for the housing and the cover to be disconnected and the cover to fall off. The expansion tank sensor assembly of the present application aims to improve the connection stability between the housing and the cover and enhance the overall structural strength.
[0033] The expansion tank sensor assembly includes: a housing 100 and a cover body 200. A receiving cavity 11 is provided on the housing 100. The receiving cavity 11 is used to install the main board 90. The reed switch 91 is installed on the main board 90. The cover body 200 is used to cover the receiving cavity 11 on the housing 100. During actual use, the reed switch 91 is installed on the main board 90, then the main board 90 is installed in the receiving cavity 11 of the housing 100, and then the cover body 200 is used to seal the receiving cavity 11 of the housing 100. Then, the sensor assembly is installed on the expansion tank and cooperates with the magnetic float in the expansion tank to monitor the liquid level height of the coolant in the expansion tank.
[0034] In this embodiment, a limiting groove 300 is further provided on the housing 100. The limiting groove 300 is a channel-type structure penetrating the housing 100, and both ends of the limiting groove 300 are open structures. A limiting rod 400 is provided on the cover body 200. Both ends of the limiting rod 400 are connected to the cover body 200. When the cover body 200 covers the receiving cavity 11, the limiting rod 400 can be inserted into the limiting groove 300. The limiting rod 400 and the limiting groove 300 are engaged and limited with each other, thereby realizing the firm connection between the cover body 200 and the housing 100, effectively preventing the cover body 200 and the housing 100 from being disconnected from each other, improving the connection stability between the cover body 200 and the housing 100, and avoiding the phenomenon of the cover body 200 falling off affected by bumpy vibrations and high temperatures.
[0035] In some embodiments, the limiting rod 400 and the cover body 200 can be of a detachable structure. For example, there is a threaded fit between the limiting rod 400 and the cover body 200, and also a threaded fit between the limiting rod 400 and the limiting groove 300. During installation, first cover the accommodating cavity 11 with the cover body 200 so that the cover body 200 is aligned with the housing 100, and then connect the cover body 200 and the housing 100 together by screwing the limiting rod 400. In this way, the threaded connection method can improve the connection stability between the cover body 200 and the housing 100. Before screwing the limiting rod 400, applying sealant to the limiting rod 400 can further improve the connection strength.
[0036] Preferably, the cover body 200 and the limiting rod 400 are of an integrally formed structure. In this way, the overall structural strength of the components is further improved, and the connection stability between the cover body 200 and the housing 100 is enhanced. In this embodiment, the cover body 200 is formed and installed on the housing 100 through an injection molding process. The housing 100 is a pre-processed component. Then, through the enclosure of the mold and the housing 100, the material cavity is enclosed, and plastic flowing material is injected into the material cavity. The plastic flowing material fills the material cavity and the limiting groove 300. The flowing material filling the material cavity forms the cover body 200, and the flowing material filling the limiting groove 300 forms the limiting rod 400 on the cover body 200. On the one hand, the mutual locking of the limiting rod 400 and the limiting groove 300 can greatly improve the connection strength between the cover body 200 and the housing 100. In addition, after the plastic flowing material cools, a high-strength connection can also be generated between the plastic flowing material and the housing 100, thereby significantly enhancing the connection strength between the cover body 200 and the housing 100 and preventing the cover body 200 from falling off under harsh working conditions.
[0037] Preferably, the cover body 200 can be covered on the housing 100 or away from the housing 100 along the first direction. The direction of the limiting groove 300 is along the second direction, and the first direction and the second direction are perpendicular to each other. In this way, the limiting effect of the limiting rod 400 and the limiting groove 300 is more effective, and the connection strength between the housing 100 and the cover body 200 is enhanced.
[0038] More preferably, a first clamping edge 1011 is provided on the housing 100 at a position close to the opening of the accommodation cavity 11. In a plane perpendicular to the first direction, the first clamping edge 1011 protrudes and extends outward from the housing 100. A first clamping groove 201 is provided on the cover body 200. When the cover body 200 seals the accommodation cavity 11, the first clamping edge 1011 can be adaptively clamped in the first clamping groove 201, thereby achieving the effect of restricting the separation between the cover body 200 and the housing 100. The plane in which the first clamping edge 1011 and the first clamping groove 201 are located is perpendicular to the first direction. Therefore, the direction of the restricting force of the cooperation between the first clamping edge 1011 and the first clamping groove 201 is perpendicular to the first direction, directly and effectively restricting the cover body 200 and further enhancing the connection strength between the cover body 200 and the housing 100.
[0039] In this embodiment, the first clamping edge 1011 and the first clamping groove 201 are both arc-shaped, and the angle of the arc-shaped direction is greater than 90 degrees, and the direction of the axis of the circle where the arc-shaped direction is located is the first direction. In this way, the arc-shaped clamping cooperation between the first clamping edge 1011 and the first clamping groove 201 is more stable. More preferably, a second clamping edge 1012 is provided on the housing 100. The second clamping edge 1012 also protrudes from the housing 100 in an arc shape. In a plane perpendicular to the first direction, the second clamping edge 1012 protrudes and extends outward. The direction of the second clamping edge 1012 is parallel to the direction of the first clamping edge 1011. Moreover, in the first direction, the second clamping edge 1012 is farther away from the opening of the accommodation cavity 11. When the opening of the accommodation cavity 11 faces upward, the second clamping edge 1012 is located below the first clamping edge 1011, and the second clamping edge 1012 and the first clamping edge 1011 are arranged at intervals. A second clamping groove 202 is provided on the cover body 200. When the cover body 200 seals the accommodation cavity 11, the second clamping edge 1012 can be adapted to be in the second clamping groove 202, thereby playing a role in restricting the separation between the cover body 200 and the housing 100. In this way, the first clamping edge 1011 and the first clamping groove 201 are clamped and matched, and the second clamping edge 1012 and the second clamping groove 202 are clamped and matched, forming two restricting forces in the first direction in which the cover body 200 moves relative to the housing 100, further enhancing the connection strength between the housing 100 and the cover body 200. Moreover, when the cover body 200 is formed on the housing 100 by injection molding, the plastic flow material directly fills the space between the first clamping edge 1011 and the second clamping edge 1012, and fills the limiting groove 300, forming a limiting fit, and the overall structure is more stable.
[0040] In this embodiment, the first card edge 1011 and the second card edge 1012 are arranged at intervals, so that an annular groove 1013 with an arc-shaped trend is formed between the first card edge 1011 and the second card edge 1012. Notches 1015 are formed at positions corresponding to both ends of the annular groove 1013 on the housing 100 and on the side facing the first card edge 1011. The notches 1015 communicate with the annular groove 1013. In the first direction, openings are formed by making both ends of the annular groove 1013 point to the opening direction of the accommodating cavity 11. Thus, when the cover is provided by injection molding, a limiting structure is formed at the position of the notch 1015 for the plastic flow. The direction of the locally formed limiting force is perpendicular to the first direction, forming an overall limiting effect between the cover body 200 and the housing 100, which is beneficial to improving the connection strength between the cover body 200 and the housing 100.
[0041] In an example, the housing 100 includes a first platform 111, a second platform 112, a first part 101 and a second part 102. The plane where the first platform 111 is located is perpendicular to the first direction. The plane where the second platform 112 is located is parallel to the first direction and parallel to the second direction. The plane where the first platform 111 is located and the plane where the second platform 112 is located are perpendicular to each other, so that the first platform 111 and the second platform 112 form an L-shaped structure. When the cover body 200 covers the accommodating cavity 11, the cover body 200 is located in the space between the first platform 111 and the second platform 112.
[0042] In this example, the first part 101 is located in the space between the first platform 111 and the second platform 112. Taking the plane where the first platform 111 is located as the horizontal state for illustration, the first platform 111 is horizontal, the second platform 112 is vertical, and the second platform 112 is vertically connected to the right top of the first platform 111. The first part 101 is arranged in the space at the top of the first platform 111 and to the left of the second platform 112. The second part 102 is arranged at the bottom of the first platform 111 and extends downward along the direction away from the first part 101. The opening of the accommodating cavity 11 is located on the side of the first part 101 away from the second part 102 and extends to the second part 102. That is to say, the opening of the accommodating cavity 11 is arranged at the top of the first part 101, and the accommodating cavity 11 extends downward until it reaches the second part 102, so that the accommodating cavity 11 is formed into a structure with an opening at the top. The limiting groove 300 is arranged inside the intersection of the first platform 111 and the second platform 112. That is to say, the limiting groove 300 is enclosed by the edge of the first part 101, a part of the first platform 111, and a part of the second platform 112. More preferably, along the first direction, the left side of the projection of the first part 101 on the first platform 111 is arc-shaped, and the angle of the arc is greater than 180 degrees, the right side of the projection is linear, and the projection of the first part 101 is located within the range of the first platform 111. Along the direction perpendicular to the plane where the second platform 112 is located, the projection of the first part 101 on the second platform 112 is rectangular, and the projection of the first part 101 is located within the range of the second platform 112. In this way, when the cover body 200 needs to be formed on the housing 100 by the injection molding process, the material cavity can be enclosed by the mold, the first platform 111, and the second platform 112.
[0043] In this example, the opening of the accommodating cavity 11 is located at the top of the first part 101. After the main board 90 is installed inside the accommodating cavity 11, epoxy resin can be injected into the accommodating cavity 11 for fixation. The filling of the epoxy resin can increase the stability of the main board 90 and the reed switch 91. Moreover, after filling the epoxy resin, it can be filled to be flush with the top of the first part 101 to form a plane, which also facilitates the subsequent injection molding of the cover body 200. In this example, the formed cover body 200 covers the first part 101 to seal the accommodating cavity 11.
[0044] In this example, both the first card edge 1011 and the second card edge 1012 are formed on the outer side of the first part 101, and the first card edge 1011 and the second card edge 1012 are arranged at intervals. Both the first card edge 1011 and the second card edge 1012 protrude horizontally outward from the outer wall of the first part 101. There is an interval between the second card edge 1012 and the first platform 111, so that an interval groove 1014 is formed between the second card edge 1012 and the first platform 111. The interval groove 1014 also has an arc-shaped trend. In this way, after the cover body 200 is injection-molded, a convex structure adapted to the interval groove 1014 is formed on the cover body 200, further increasing the connection strength between the cover body 200 and the housing 100.
[0045] In this example, after the housing 100 is capped by injection molding, the housing 100 has a top wall and a side wall. The top wall is flat, the side wall has an arc-shaped trend, and the angle of the arc-shaped trend of the side wall is greater than 180 degrees. The bottom of the cover body 200 is open, and the right side of the cover body 200 is open. The limiting rod 400 is arranged at the bottom of the right-side opening of the cover body 200, and both ends of the limiting rod 400 are respectively connected to both ends of the side-wall opening.
[0046] In one embodiment, a communication port 500 is provided on the second platform 112. The communication port 500 communicates with the accommodating cavity 11. The communication port 500 horizontally penetrates the second platform 112 and extends into the interior of the first part 101 to communicate with the accommodating cavity 11, facilitating the setting of the insertion pin 92 at the communication port 500. The insertion pin 92 is connected to the main board 90, and it is convenient to connect with other cable connectors through the insertion pin 92, improving the convenience of connection. A protective sleeve 93 can be provided on the right side of the second platform 112. The communication port 500 is located within the enclosed space of the protective sleeve 93, and other cable connectors are connected to the insertion pin 92 inside the protective sleeve 93, improving the connection stability.
[0047] More preferably, the outer shape of the second part 102 is a long cylindrical shape. The top of the second part 102 is connected to the bottom of the first platform 111, and the bottom of the second part 102 extends downward. A first boss 1021 and a second boss 1022 are provided locally on the outer periphery of the second part 102 near the first platform 111. The first boss 1021 and the second boss 1022 are arranged oppositely with respect to the axis of the second part 102, and the first boss 1021 and the second boss 1022 are centrosymmetrically arranged with respect to the axis of the second part 102. Both the first boss 1021 and the second boss 1022 protrude from the outer wall of the second part 102 so as to be snap-connected to the expansion tank. In this embodiment, a plugging sleeve 80 is further included. The plugging sleeve 80 is arranged on the expansion tank. As shown in the figure, the plugging sleeve 80 is cylindrical. Two spiral grooves 81 are formed on the side wall of the plugging sleeve 80. The two spiral grooves 81 are arranged oppositely. The spiral grooves 81 are arranged in a spiral direction from the side wall of the plugging sleeve 80, in a similar thread-like direction. When the first boss 1021 is snapped into one of the spiral grooves 81 and the second boss 1022 is snapped into the other spiral groove 81, by screwing the second part 102, the second part 102 can be axially moved relative to the plugging sleeve 80. Thus, an installation hole is opened on the expansion tank, the plugging sleeve 80 is welded to the expansion tank, and the plugging sleeve 80 and the installation hole are coaxially arranged. The end of the second part 102 is extended into the interior of the expansion tank through the plugging sleeve 80 and the installation hole. The first part 101, the first platform 111, and the second platform 112 are located outside the expansion tank. The first boss 1021 enters from the starting end of one of the spiral grooves 81, and the second boss 1022 enters from the starting end of the other spiral groove 81. A transition groove 82 can be arranged on the outer periphery of the plugging sleeve 80. The transition groove 82 extends radially outward and expands, facilitating the entry of the first boss 1021 and the second boss 1022 into the spiral grooves 81. The size of one of the transition grooves 82 is adapted to the first boss 1021, and the size of the other transition groove 82 is adapted to the second boss 1022. Similarly, the size of one of the spiral grooves 81 corresponds to the first boss 1021, and the size of the other spiral groove 81 corresponds to the second boss 1022. After the first boss 1021 and the second boss 1022 are respectively adapted to the corresponding spiral grooves 81, the second part 102 is screwed to complete the connection between the second part 102 and the plugging sleeve 80 in a similar threaded connection manner. A clamping groove 83 is arranged at the end of the spiral groove 81. The clamping groove 83 is formed on the side part of the end of the spiral groove 81, and the clamping groove 83 is recessed locally on the side part of the end of the spiral groove 81. Depending on the certain elasticity of the material itself, the first boss 1021 and the clamping groove 83 on the corresponding spiral groove 81 form a limit, and the second boss 1022 and the clamping groove 83 on the corresponding spiral groove 81 form a limit, so as to form a connection between the second part 102 and the plugging sleeve 80. A sealing ring and other structures are further arranged between the expansion tank and the second part 102 to avoid leakage of the coolant. In this embodiment, after the installation is completed,The second part 102 is vertical. The magnetic float in the expansion tank can be movably sleeved on the second part 102 and move up and down with the liquid level. It can also prevent the magnetic float from moving randomly in the horizontal direction, which can improve the monitoring accuracy and precision. In this embodiment, the sizes of the first boss 1021 and the second boss 1022 can be the same or different.
[0048] It should be noted that phrases such as "one embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. Moreover, when combining a specific feature, structure or characteristic with an embodiment, implementing such a feature, structure or characteristic in other embodiments, whether explicitly or implicitly described, is within the knowledge scope of those skilled in the art.
[0049] It should be easily understood that the terms "on", "above", and "over" in the present disclosure should be interpreted in the broadest manner, so that "on" not only means "directly on something", but also includes the meaning of "on something" with intermediate features or layers therebetween, and "above" or "over" not only includes the meaning of "above or over something", but may also include the meaning of "above or over something" with no intermediate features or layers therebetween (i.e., directly on something).
[0050] In addition, for the convenience of description, spatial relative terms such as "below", "beneath", "under", "above", "over", etc. may be used in the text to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation other than the orientation shown in the drawings. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatial relative descriptive words used in the text may be interpreted accordingly.
[0051] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. An expansion tank sensor assembly, characterized in that, Comprising: A housing provided with a receiving cavity for mounting a main board. A cover for sealing the receiving cavity of the housing. Wherein, a limiting groove is provided on the housing, and the limiting groove is a channel - type structure that penetrates the housing and has openings at both ends. A limiting rod is provided on the cover, and both ends of the limiting rod are connected to the cover. When the cover seals the receiving cavity, the limiting rod passes through the limiting groove to limit the separation of the cover and the housing.
2. The expansion tank sensor assembly according to claim 1, wherein: The cover and the limiting rod are of an integrally formed structure.
3. The expansion tank sensor assembly according to claim 1, wherein: The cover is injection - molded on the housing.
4. The expansion tank sensor assembly according to claim 1, wherein: The cover can be closed on the housing or moved away from the housing along a first direction. The direction of the limiting groove is arranged along a second direction, and the first direction and the second direction are perpendicular to each other.
5. The expansion tank sensor assembly according to claim 4, wherein: A first clamping edge is provided at a position on the housing near the opening of the receiving cavity, and the first clamping edge protrudes from the housing. A first clamping groove is provided on the cover. When the cover seals the receiving cavity, the first clamping edge is fitted into the first clamping groove to limit the separation of the cover and the housing. The plane in which the first clamping edge and the first clamping groove are located is perpendicular to the first direction.
6. The expansion tank sensor assembly according to claim 5, characterized in that: The first clamping edge and the first clamping groove are arranged in an arc shape.
7. The expansion tank sensor assembly according to claim 6, characterized in that: A second clamping edge is provided on the housing, and the second clamping edge protrudes from the housing. A second clamping groove is provided on the cover. When the cover seals the receiving cavity, the second clamping edge is fitted into the second clamping groove to limit the separation of the cover and the housing. The second clamping edge is arranged parallel to the first clamping edge and is farther away from the opening of the receiving cavity than the first clamping edge.
8. The expansion tank sensor assembly according to claim 7, characterized in that: An annular groove with an arc - shaped direction is formed between the first clamping edge and the second clamping edge. Notches are formed at positions corresponding to both ends of the annular groove on the housing and facing the side of the first clamping edge, and the notches communicate with the annular groove.
9. The expansion tank sensor assembly according to claim 8, wherein: The housing includes a first platform and a second platform. The plane of the first platform is perpendicular to the first direction, and the plane of the second platform is parallel to the first direction and the second direction. When the cover seals the receiving cavity, the cover is located between the first platform and the second platform.
10. A sensor assembly for an expansion tank according to claim 9, wherein: The housing further includes a first part and a second part. The first part is arranged between the first platform and the second platform, and the second part is arranged on the first platform and extends along a direction away from the first part. The opening of the receiving cavity is located on the side of the first part away from the second part and extends to the second part. The cover can cover the first part to seal the receiving cavity, and the limiting groove is located at the intersection of the first platform and the second platform.
11. A swelling water tank sensor assembly according to claim 10, characterized in that: The second clamping edge and the first platform are spaced apart, so that a spacing groove is formed between the second clamping edge and the first platform.
12. A sensor assembly for an expansion tank according to claim 10, characterized in that: A communication port is provided on the second platform, and the communication port communicates with the receiving cavity.
13. A sensor assembly for an expansion tank according to claim 10, characterized in that: First and second bosses are oppositely arranged on the outer periphery of the second part for snap - connection with an expansion water tank.