Dustproof cover structure and PTC heater
By designing a dust-proof cover with a double fixed structure, the problem that the existing dust-proof cover cannot be adapted to multiple sizes is solved, and the stable sealing and compatibility of the PTC heater water pipe port is achieved, avoiding rust on the pipe port.
Patent Information
- Application Number
- CN202422269531.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The existing dust cover cannot be adapted to the PTC heater water pipe port of multiple sizes, resulting in poor compatibility.
A dust-proof cover structure is designed, including a cover body, a first engaging part and a second engaging part. The first engaging wall is interfered with the outer wall of the heating pipe, and the second engaging wall is interfered with the inner wall of the heating pipe, forming a double fixed to adapt to heating pipes of different sizes.
It achieves stable sealing of heating pipes of different sizes, improves dust protection, enhances compatibility, and avoids rust on the pipe mouth.
Smart Images
Figure CN223182342U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automotive parts, in particular to a dust cover structure and a PTC heater. Background Art
[0002] For the PTC heater manufacturing industry, after the PTC heater is prepared, it needs to go through stages such as inventory, transportation, and use. During storage, transportation, etc. of the PTC heater, it is necessary to strictly prevent external dust, sundries, etc. from entering the inside of the water pipe orifice of the PTC heater and causing pollution.
[0003] In the prior art, the dust cover mainly relies on the interference fit between the inner wall of the dust cover and the outer wall of the water pipe orifice of the PTC heater to achieve the dust-proof function. However, the compatibility is poor and it cannot adapt to the water pipe orifices of PTC heaters of various sizes. Summary of the Utility Model
[0004] The main purpose of the utility model is to propose a dust cover structure and a PTC heater, aiming to solve the problem that the existing dust cover cannot adapt to the water pipe orifices of PTC heaters of various sizes.
[0005] To achieve the above purpose, a dust cover structure proposed by the utility model includes a cover body, a first engaging portion, and a second engaging portion. The first engaging portion and the second engaging portion are both provided on one side of the cover body and are both annularly arranged, respectively forming a first engaging groove and a second engaging groove. The second engaging portion is located in the first engaging groove. The first engaging groove has a first engaging wall for abutting against the outer wall of the heating pipe, and the second engaging groove has a second engaging wall for abutting against the inner wall of the heating pipe.
[0006] According to some embodiments of the utility model, on the side of the cover body facing the first engaging portion, a plurality of first ribs are spaced and protruded in the circumferential direction of the cover body. Each of the first ribs extends along the radial direction of the cover body and extends from the middle of the cover body to the first engaging portion. The second engaging portion is provided on the first ribs and forms a gap with the cover body. The second engaging groove communicates with the first engaging groove through the gap.
[0007] According to some embodiments of the utility model, the inner wall of the first engaging groove is spaced and protruded with a plurality of second ribs in its circumferential direction, and the first engaging wall is formed on the plurality of second ribs.
[0008] According to some embodiments of the utility model, the outer wall of the second engaging groove is spaced and protruded with a plurality of third ribs in its circumferential direction, and the second engaging wall is formed on the plurality of third ribs.
[0009] According to some embodiments of the utility model, both the second ribs and the third ribs extend along the axial direction of the cover body.
[0010] According to some embodiments of the present utility model, the first engaging portion and the second engaging portion are coaxially arranged, a plurality of the second ribs are symmetrically arranged in pairs, and a plurality of the third ribs are symmetrically arranged in pairs.
[0011] According to some embodiments of the present utility model, the number of the second ribs is the same as that of the third ribs, and each of the second ribs and the third ribs is arranged in one-to-one correspondence.
[0012] According to some embodiments of the present utility model, both the second ribs and the third ribs are made of elastic materials.
[0013] According to some embodiments of the present utility model, a plurality of through holes are formed in the second ribs and the third ribs at intervals in the axial direction of the cover body.
[0014] In addition, the present utility model also provides a PTC heater, which includes a heater body, a heating pipe and the dust-proof cover structure as described in any one of the above, the heater body is connected to the heating pipe, and the dust-proof cover structure covers the pipe orifice of the heating pipe.
[0015] The present utility model has at least the following beneficial effects:
[0016] In the present utility model, the first engaging portion and the second engaging portion are both arranged on one side of the cover body and are both annularly arranged, respectively forming a first engaging groove and a second engaging groove. The second engaging portion is located in the first engaging groove. The first engaging groove has a first engaging wall for abutting against the outer wall of the heating pipe, and the second engaging groove has a second engaging wall for abutting against the inner wall of the heating pipe. When the dust-proof cover structure covers the heating pipe, the first engaging wall on the first engaging groove abuts against and fixes the outer wall of the heating pipe, and the second engaging wall on the second engaging groove abuts against and fixes the inner wall of the heating pipe. Finally, the pipe orifice of the heating pipe is blocked by the cover body to achieve dust prevention of the heating pipe. Compared with the existing dust-proof cover which only has an interference fit between the inner wall of the dust-proof cover and the outer wall of the heating pipe, in the present utility model, the first engaging wall and the second engaging wall respectively abut against and cooperate with the outer wall and the inner wall of the heating pipe. On the one hand, the double fixation is more firm. On the other hand, even if the outer diameter size of the heating pipe changes and the first engaging wall cannot abut against and fix, the second engaging wall can still abut against and fix the inner wall of the heating pipe. Therefore, it can be adapted to heating pipes of more sizes. Description of the Drawings
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0018] Figure 1 The structural schematic diagram of a dust cover structure provided by an embodiment of the present invention;
[0019] Figure 2 For Figure 1 The schematic diagram of the dust cover structure in covering the heating pipeline.
[0020] Explanation of the reference numerals:
[0021] 100 - Dust cover structure; 1 - Cover body; 11 - First rib; 2 - First engaging portion; 21 - First engaging groove; 22 - Second rib; 3 - Second engaging portion; 31 - Second engaging groove; 32 - Third rib; 200 - Heating pipeline. Specific embodiments
[0022] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0023] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.
[0024] In addition, if the embodiments of the present utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0025] The present utility model provides a dust cover structure and a PTC heater. Figures 1 to 2 This is a specific embodiment of the dust cover structure provided by the present utility model.
[0026] As Figure 1 and Figure 2 shown, an embodiment of the present utility model provides a dust cover structure 100, which includes a cover body 1, a first engaging portion 2, and a second engaging portion 3. Both the first engaging portion 2 and the second engaging portion 3 are provided on one side of the cover body 1 and are both annularly arranged, respectively forming a first engaging groove 21 and a second engaging groove 31. The second engaging portion 3 is located within the first engaging groove 21. The first engaging groove 21 has a first engaging wall for abutting against the outer wall of the heating pipe 200, and the second engaging groove 31 has a second engaging wall for abutting against the inner wall of the heating pipe 200.
[0027] In the present utility model, the first engaging portion 2 and the second engaging portion 3 are both arranged on one side of the cover body 1 and are both annularly arranged, respectively forming a first engaging groove 21 and a second engaging groove 31. The second engaging portion 3 is located within the first engaging groove 21. The first engaging groove 21 has a first engaging wall for abutting against the outer wall of the heating pipe 200, and the second engaging groove 31 has a second engaging wall for abutting against the inner wall of the heating pipe 200. When the dust-proof cover structure 100 covers the heating pipe 200, it is fixed by the abutment of the first engaging wall on the first engaging groove 21 against the outer wall of the heating pipe 200, and the second engaging wall on the second engaging groove 31 abuts against and is fixed to the inner wall of the heating pipe 200. Finally, the pipe orifice of the heating pipe 200 is sealed by the cover body 1 to achieve dust prevention for the heating pipe 200. Compared with the existing dust-proof cover that only has an interference fit between the inner wall of the dust-proof cover and the outer wall of the heating pipe 200, in the present utility model, the first engaging wall and the second engaging wall respectively abut and cooperate with the outer wall and the inner wall of the heating pipe 200. On the one hand, the double fixation is more firm. On the other hand, even if the outer diameter size of the heating pipe 200 changes and the first engaging wall cannot abut and be fixed, the second engaging wall can still abut and be fixed to the inner wall of the heating pipe 200. Therefore, it can adapt to heating pipes 200 of more sizes.
[0028] It should be noted that the first engaging wall has an interference fit with the outer wall of the heating pipe 200, and the second engaging wall has an interference fit with the inner wall of the heating pipe 200.
[0029] Preferably, since both the first engaging portion 2 and the second engaging portion 3 are arranged on the cover body 1, part of the force received when the first engaging wall and the second engaging wall have an interference fit with the heating pipe 200 will be transmitted to the cover body 1. In order to improve the structural strength of the cover body 1, in some embodiments, as Figure 1 shown, on the side of the cover body 1 facing the first engaging portion 2, a plurality of first rib strips 11 are convexly arranged at intervals in the circumferential direction of the cover body 1. Each of the first rib strips 11 extends along the radial direction of the cover body 1 and extends from the middle of the cover body 1 to the first engaging portion 2. The second engaging portion 3 is arranged on the first rib strip 11 and forms a gap with the cover body 1. The second engaging groove 31 and the first engaging groove 21 are communicated through the gap. With such a setting, on the one hand, by arranging a plurality of the first rib strips 11, the structural strength of the cover body 1 is improved, and deformation of the cover body 1 after long-term use is avoided. On the other hand, since the water vapor inside the PTC heater will remain at the pipe orifice of the heating pipe 200, resulting in rusting of the pipe orifice, by arranging a plurality of the first rib strips 11, the second engaging groove 31 and the first engaging groove 21 are communicated through the gap, so that the small water droplets formed by the aggregation of the water vapor at the pipe orifice flow to the first engaging groove 21, avoiding rusting of the pipe orifice.
[0030] In some embodiments, as Figure 1 shown, a plurality of second ribs 22 are convexly provided at intervals in the circumferential direction on the inner wall of the first engaging groove 21, and the first engaging wall is formed on the plurality of second ribs 22. Since the first engaging wall is in interference fit with the outer wall of the heating pipe 200, the first engaging portion 2 will be subjected to the force applied by the heating pipe 200. By providing a plurality of the second ribs 22, the strength of the first engaging portion 2 is improved, and deformation of the first engaging portion 2 during long-term use is avoided.
[0031] It should be noted that in some embodiments, the above two technical features can be applied simultaneously, that is, a plurality of first ribs 11 are convexly provided at intervals in the circumferential direction on the side of the cover body 1 facing the first engaging portion 2. Each of the first ribs 11 extends in the radial direction of the cover body 1 and extends from the middle of the cover body 1 to the first engaging portion 2. The second engaging portion 3 is provided on the first rib 11 and forms a gap with the cover body 1. The second engaging groove 31 and the first engaging groove 21 communicate through the gap. A plurality of second ribs 22 are convexly provided at intervals in the circumferential direction on the inner wall of the first engaging groove 21, and the first engaging wall is formed on the plurality of second ribs 22. Since the water vapor inside the PTC heater will remain at the pipe orifice of the heating pipe 200, resulting in corrosion of the pipe orifice, by arranging a plurality of the first ribs 11, the second engaging groove 31 and the first engaging groove 21 communicate through the gap, so that the small water droplets formed by the aggregation of the water vapor at the pipe orifice flow to the first engaging groove 21. At the same time, since a plurality of second ribs 22 are convexly provided at intervals on the first engaging groove 21, there is a gap between the outer wall of the heating pipe 200 and the inner wall of the first engaging groove 21, and the small water droplets can flow out along the gap, thereby discharging the residual water vapor inside the PTC heater.
[0032] Further, in some embodiments, as Figure 1 shown, a plurality of third ribs 32 are convexly provided at intervals in the circumferential direction on the outer wall of the second engaging groove 31, and the second engaging wall is formed on the plurality of third ribs 32. Arranging a plurality of the third ribs 32 improves the strength of the second engaging portion 3 on the one hand and avoids deformation of the second engaging portion 3 during long-term use, and on the other hand, there is a gap between the inner wall of the heating pipe 200 and the outer wall of the second engaging groove 31, which is convenient for discharging the residual water vapor inside the PTC heater.
[0033] The extending directions of the second ribs 22 and the third ribs 32 are not limited, as long as it is ensured that the second ribs 22 and the third ribs 32 are in interference fit with the outer wall and the inner wall of the heating pipe 200 respectively. For example, in some embodiments, as Figure 2As shown, the second ribs 22 and the third ribs 32 both extend along the axial direction of the cover body 1. This arrangement allows the extension direction of the second ribs 22 and the third ribs 32 to coincide with the direction in which the dust cover structure 100 separates from the heating pipe 200, making it more difficult for the dust cover structure 100 to separate from the heating pipe 200.
[0034] In order to balance the force on the heating pipe 200, in some embodiments, as Figure 1 and Figure 2 As shown, the first engaging portion 2 and the second engaging portion 3 are coaxially arranged, the plurality of second ribs 22 are symmetrically arranged in pairs, and the plurality of third ribs 32 are symmetrically arranged in pairs. Because the first engaging portion 2 and the second engaging portion 3 are coaxially arranged, all the second ribs 22 and all the third ribs 32 have the same thickness, resulting in uniform force at each abutting portion of the heating pipe 200. Furthermore, the symmetrical arrangement of the second ribs 22 and the third ribs 32 in pairs ensures balanced force on the heating pipe 200.
[0035] Specifically, in some embodiments, Figure 1 As shown, the number of the second ribs 22 and the third ribs 32 is the same, and each second rib 22 is arranged in a one-to-one correspondence with the third rib 32. This arrangement allows the second ribs 22 and the third ribs 32 to have an interference fit with the outer wall and the inner wall of the heating pipe 200, respectively. The one-to-one correspondence between each second rib 22 and the third rib 32 allows the second ribs 22 and the third rib 32 to jointly exert force on the heating pipe 200, thereby ensuring a more secure fixation.
[0036] It should be noted that in some embodiments, the above two technical features can be applied simultaneously, that is, the first engaging portion 2 and the second engaging portion 3 are coaxially arranged, the plurality of second ribs 22 are symmetrically arranged in pairs, the plurality of third ribs 32 are symmetrically arranged in pairs, the number of second ribs 22 and third ribs 32 is the same, and each second rib 22 corresponds to each third rib 32. This arrangement ensures that each part of the heating pipe 200 is subjected to two forces in opposite directions, and the effects of the forces offset each other, achieving force balance at each part, thereby preventing the heating pipe 200 from deforming after long-term use.
[0037] In some embodiments, the second rib 22 and the third rib 32 are both made of elastic material. Specifically, the second rib 22 and the third rib 32 are both made of PE material.
[0038] Furthermore, in some embodiments, Figure 1As shown, a plurality of through holes are provided through the second rib 22 and the third rib 32 at intervals in the axial direction of the cover body 1. With such a setting, the second rib 22 and the third rib 32 have a greater amount of deformation, so that the dust-proof cover structure 100 can adapt to heating pipes 200 of more sizes, improving the applicability of the dust-proof cover structure 100.
[0039] In addition, the present utility model further provides a PTC heater, which includes a heater body, a heating pipe 200, and the dust-proof cover structure 100. The heater body is connected to the heating pipe 200, and the dust-proof cover structure 100 covers the pipe orifice of the heating pipe 200. The dust-proof cover structure 100 includes a cover body 1, a first engaging portion 2, and a second engaging portion 3. The first engaging portion 2 and the second engaging portion 3 are both provided on one side of the cover body 1 and are both annularly arranged, respectively forming a first engaging groove 21 and a second engaging groove 31. The second engaging portion 3 is located in the first engaging groove 21. The first engaging groove 21 has a first engaging wall for the outer wall of the heating pipe 200 to abut against, and the second engaging groove 31 has a second engaging wall for the inner wall of the heating pipe 200 to abut against.
[0040] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A dust cover structure, characterized in that, It includes a cover body, a first engaging portion and a second engaging portion. The first engaging portion and the second engaging portion are both provided on one side of the cover body and are both annularly arranged, respectively forming a first engaging groove and a second engaging groove. The second engaging portion is located within the first engaging groove. The first engaging groove has a first engaging wall for abutting against the outer wall of the heating pipe, and the second engaging groove has a second engaging wall for abutting against the inner wall of the heating pipe.
2. The dust cover structure according to claim 1, wherein On the side of the cover body facing the first engaging portion, a plurality of first ribs are convexly provided at intervals in the circumferential direction of the cover body. Each of the first ribs extends along the radial direction of the cover body and extends from the middle of the cover body to the first engaging portion. The second engaging portion is provided on the first rib and forms a gap with the cover body. The second engaging groove communicates with the first engaging groove through the gap.
3. The dust-proof cover structure according to claim 1, wherein, On the inner wall of the first engaging groove, a plurality of second ribs are convexly provided at intervals in its circumferential direction, and the first engaging wall is formed on the plurality of second ribs.
4. The dust cover structure according to claim 3, characterized in that, On the outer wall of the second engaging groove, a plurality of third ribs are convexly provided at intervals in its circumferential direction, and the second engaging wall is formed on the plurality of third ribs.
5. The dust cover structure according to claim 4, characterized in that, Both the second rib and the third rib extend along the axial direction of the cover body.
6. The dust-proof cover structure according to claim 4, characterized in that, The first engaging portion and the second engaging portion are coaxially arranged. The plurality of second ribs are symmetrically arranged in pairs, and the plurality of third ribs are symmetrically arranged in pairs.
7. The dust cover structure according to claim 4, characterized in that, The number of the second ribs is the same as that of the third ribs, and each of the second ribs and the third ribs is arranged in one-to-one correspondence.
8. The dust cover structure according to claim 4, wherein Both the second rib and the third rib are made of elastic material.
9. The dust-proof cover structure according to claim 8, wherein, The second rib and the third rib are provided with a plurality of through holes penetrating at intervals in the axial direction of the cover body.
10. A PTC heater, characterized in that, It includes a heater body, a heating pipe and a dust-proof cover structure according to any one of claims 1 to 9. The heater body is connected to the heating pipe, and the dust-proof cover structure covers the pipe orifice of the heating pipe.