A detachable PTC heater

Abstract

The utility model discloses a detachable PTC heater relates to heating equipment technical field, including shell, the inside installation of shell has PTC heating plate, and the both sides of shell are equipped with the first clamping groove that cooperates with PTC heating plate, and the side of first clamping groove is equipped with second limit slot close to first stopper, and one end of first clamping groove is equipped with the clamping block away from second limit slot, and the sliding block is equipped with the sliding block on clamping block, and the lower surface of sliding block is equipped with second clamping groove, and the bottom of sliding block is equipped with first limit block, the utility model discloses through pressing PTC heating plate, makes first stopper exert force to sliding block, makes the second clamping groove on sliding block can continue to slide on clamping block, and the sliding bar crosses the fender of one side of third slope, and PTC heating plate loses the fixed with shell, and draws out PTC heating plate just can to PTC heating plate disassembly, and is convenient for to PTC heating plate overhaul and replacement.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, specifically a detachable PTC heater. Background Technology

[0002] In many fields such as industrial production, home appliances, and automotive heating, heating equipment serves as a key component, providing stable heat output for various scenarios to ensure the smooth progress of production processes and meet people's daily comfort needs. PTC heating plates, with their advantages of rapid heating, energy efficiency, and high safety, are widely used in various heating equipment and have become the core component for realizing the heating function of equipment.

[0003] Currently, PTC heating plates are often installed and fixed using bolts or welding. Bolting requires specialized tools for both installation and disassembly, which is difficult to operate in confined spaces, time-consuming, and potentially damaging to other internal components. While welding provides a secure fixation, it prevents disassembly if the heating plate malfunctions and needs repair or replacement, necessitating the replacement of the entire device and significantly increasing operating costs.

[0004] Patent CN220067716U discloses a detachable PTC heater, which is clamped and fixed to the outside of the inner tube by two symmetrically arranged semi-circular clips. The clips are detachably fixed to the outside of the PTC heating assembly by bolts, so that when the PTC heating assembly is damaged, the damaged PTC heating assembly can be easily disassembled and replaced.

[0005] However, this patent has the following drawbacks: the PTC heater uses multiple bolts to detachably fix the clips to the outside of the PTC heating assembly, thereby enabling the disassembly of the PTC heating assembly; this disassembly method is rather cumbersome and inconvenient. Utility Model Content

[0006] To address the technical challenges of disassembling PTC heating components in existing technologies, which are difficult, time-consuming, cumbersome, and increase maintenance costs when malfunctions require repair or replacement due to performance degradation, this invention provides a detachable PTC heater.

[0007] The objective of this utility model can be achieved through the following technical solutions: A detachable PTC heater includes a housing with a PTC heating plate installed inside. The housing has first slots on both sides that mate with the PTC heating plate. A second limiting groove is provided on the side of the first slot closest to a first stop. A locking block is provided at the end of the first slot away from the second limiting groove. A slider slides on the locking block. The lower surface of the slider has a second slot, and the bottom of the slider has a first limiting block. A connecting block is fixedly provided at the end of the slider closest to the first limiting block. A first connecting post is fixedly provided above the connecting block. One end of a spring is fixedly provided on the first connecting post, and the other end of the spring is fixedly connected to a second connecting post. A third limiting groove is provided on the upper surface of the slider closest to the connecting block.

[0008] Furthermore, a first limiting groove and a first stop are provided in the middle of one side of the PTC heating plate, and the second limiting groove is trapezoidal in shape. The top surface of the second limiting groove is close to the opening end of the outer shell, and the length of the top surface of the second limiting groove is less than that of the bottom surface of the second limiting groove.

[0009] Furthermore, a first ramp is provided on one side of the card block, and the slope of the first ramp near the opening end of the outer casing is lower than the slope away from the opening end of the outer casing.

[0010] Furthermore, one end of the first limiting block is fixedly connected to the slider, and the other end of the first limiting block is provided to protrude upward; the second connecting post is fixedly connected inside the outer shell.

[0011] Furthermore, the third limiting groove is Y-shaped, with a second ramp at one fork and a third ramp at the other fork.

[0012] Furthermore, the height of the second slope is set to gradually decrease towards the spring end, and the height of the third slope is set to gradually increase towards the spring end.

[0013] Furthermore, the third limiting groove is fixedly provided with a second stop at the bifurcation point. The second stop is V-shaped and has an arc groove on the side of the second stop facing the spring. Stop bars are provided on both sides of the arc groove and are fixedly provided on the upper surface of the slider.

[0014] Furthermore, the slope of the retaining strip near the second slope gradually increases towards the arc groove, while the slope of the retaining strip near the third slope gradually decreases towards the arc groove. A matching sliding rod is provided in the third limiting groove, with one end of the sliding rod rotatably connected to the inside of the outer shell and the other end of the sliding rod slidably disposed in the third limiting groove.

[0015] The beneficial effects of this utility model are: This invention involves inserting a PTC heating plate into the housing. A first stop on the PTC heating plate applies force to a slider, allowing a second slot on the slider to slide on the stop. The slider slides away from the opening of the housing, while a sliding rod slides in the direction of the spring within a third limiting groove. Since the second and third slopes are in opposite directions, the sliding rod first slides towards the second slope, then passes over the stop bar on the same side until it is locked between the stop bar and the arc groove, thus fixing the PTC heating plate inside the housing. Pressing the PTC heating plate then applies force to the slider from the first stop, allowing the second slot on the slider to continue sliding on the stop. Once the sliding rod passes the stop bar on the third slope side, the PTC heating plate loses its fixation to the housing, allowing it to be removed for easy disassembly. This facilitates the inspection and replacement of the PTC heating plate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the PTC heating plate structure of this utility model; Figure 3 This is a top sectional view of the present invention; Figure 4 This is an exploded view of the present invention; Figure 5 This is a schematic diagram of the third limiting groove structure in this utility model; Figure 6 yes Figure 5 A magnified view of a portion of point A in the middle.

[0017] The attached diagram lists the components represented by each number as follows: 1. Outer shell; 2. PTC heating plate; 201. First limiting groove; 202. First stop block; 3. First slot; 4. Second limiting groove; 5. First ramp; 6. Locking block; 7. First limiting block; 8. Second slot; 9. Slider; 901. Connecting block; 10. First connecting post; 1001. Second connecting post; 11. Spring; 12. Third limiting groove; 1201. Second ramp; 1202. Third ramp; 1203. Second stop block; 1204. Arc groove; 1205. Stop bar; 13. Slide rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 As shown, a detachable PTC heater includes a housing 1, which is U-shaped, and a PTC heating plate 2 is installed inside the housing 1. A first limiting groove 201 and a first stop 202 are provided in the middle of one side of the PTC heating plate 2. The first stop 202 is located at the end away from the wire of the PTC heating plate 2.

[0020] The outer casing 1 has a first slot 3 on both sides that mates with the PTC heating plate 2. The first slot 3 is used to insert the PTC heating plate 2. Please see Figure 3-4 As shown, a second limiting groove 4 is provided on the side of the first slot 3 near the first stop block 202. The second limiting groove 4 is trapezoidal in shape. The top surface of the second limiting groove 4 is close to the opening end of the outer shell 1. The length of the top surface of the second limiting groove 4 is less than the length of the bottom surface of the second limiting groove 4. A locking block 6 is provided on the end of the first slot 3 away from the second limiting groove 4. A first ramp 5 is provided on one side of the locking block 6. The slope of the first ramp 5 near the opening end of the outer shell 1 is lower than the slope away from the opening end of the outer shell 1.

[0021] A slider 9 is slidably mounted on the card block 6. The lower surface of the slider 9 is provided with a second card groove 8 that matches the card block 6. The slider 9 can slide on the card block 6. The slider 9 is provided with a chamfer at the opening end near the outer shell 1 that matches the first stop 202. The first stop 202 is used to push the slider 9 to slide on the card block 6.

[0022] The bottom of the slider 9 is provided with a first limiting block 7. One end of the first limiting block 7 is fixedly connected to the slider 9, and the other end of the first limiting block 7 is protruding upward. The first limiting block 7 is made of plastic or elastic material. In this embodiment, it can be made of polyvinyl chloride material.

[0023] In the initial state, the protruding end of the first limiting block 7 is located on the top surface of the second limiting groove 4, and the first limiting block 7 is stuck in the second limiting groove 4.

[0024] By inserting the PTC heating plate 2 into the interior of the housing 1 from the slots on both sides of the housing 1, the first stop 202 on the PTC heating plate 2 applies force to the slider 9, so that the second slot 8 on the slider 9 can slide on the block 6; the slider 9 slides away from the opening end of the housing 1, causing the first limiting block 7 to slide together; when the first limiting block 7 slides to the position of the first limiting groove 201, the first limiting block 7 tilts upward, and its protruding end is inserted into the first limiting groove 201.

[0025] Please see Figure 5-6As shown, a connecting block 901 is fixedly provided at one end of the slider 9 near the first limiting block 7. A first connecting post 10 is fixedly provided above the connecting block 901. One end of a spring 11 is fixedly provided on the first connecting post 10. The other end of the spring 11 is fixedly connected to the second connecting post 1001. The second connecting post 1001 is fixedly connected inside the outer shell 1.

[0026] A third limiting groove 12 is provided on the upper surface of the slider 9 near the connecting block 901. The third limiting groove 12 is in the shape of a "Y". A second ramp 1201 is provided at one fork of the third limiting groove 12, and a third ramp 1202 is provided at the other fork of the third limiting groove 12.

[0027] The height of the second ramp 1201 is set to gradually decrease towards the spring 11 end, and the height of the third ramp 1202 is set to gradually increase towards the spring 11 end.

[0028] The third limiting groove 12 is fixedly provided with a second stop 1203 at the bifurcation. The second stop 1203 is V-shaped and has an arc groove 1204 on the side of the second stop 1203 facing the spring 11. The arc groove 1204 has a stop bar 1205 on both sides and the stop bar 1205 is fixedly provided on the upper surface of the slider 9.

[0029] The slope of the baffle 1205 near the second slope 1201 gradually increases towards the arc groove 1204, while the slope of the baffle 1205 near the third slope 1202 gradually decreases towards the arc groove 1204.

[0030] The third limiting groove 12 is provided with a matching slide rod 13. One end of the slide rod 13 is rotatably connected to the inside of the outer shell 1, and the other end of the slide rod 13 is slidably disposed in the third limiting groove 12.

[0031] By inserting the PTC heating plate 2 into the housing 1, the first stop 202 on the PTC heating plate 2 applies force to the slider 9, allowing the second slot 8 on the slider 9 to slide on the stop block 6; the slider 9 slides away from the opening end of the housing 1, and the slide rod 13 slides in the direction of the spring 11 in the third limiting groove 12. Since the directions of the second slope 1201 and the third slope 1202 are opposite, the slide rod 13 first slides in the direction of the second slope 1201, and then passes over the stop bar 1205 on the same side until the slide rod 13 is stuck between the stop bar 1205 and the arc groove 1204, thus fixing the PTC heating plate 2 inside the housing 1.

[0032] When the PTC heating plate 2 is damaged and needs to be repaired or replaced, the first stop 202 can be pressed to apply force to the slider 9, so that the second slot 8 on the slider 9 can continue to slide on the stop block 6; the slide bar 13 passes over the stop bar 1205 on one side of the third ramp 1202, the PTC heating plate 2 loses its fixation to the outer shell 1, and the PTC heating plate 2 can be removed for disassembly, repair and replacement.

[0033] Working principle: When it is necessary to disassemble, inspect and repair the PTC heating plate 2, press the PTC heating plate 2 so that the first stop 202 applies force to the slider 9, so that the second slot 8 on the slider 9 can continue to slide on the stop block 6; the slide rod 13 passes over the stop bar 1205 on one side of the third slope 1202, the PTC heating plate 2 loses its fixation to the outer shell 1, and the PTC heating plate 2 can be disassembled by pulling out the PTC heating plate 2.

[0034] When the PTC heating plate 2 needs to be installed, the PTC heating plate 2 is inserted into the housing 1. The first stop 202 on the PTC heating plate 2 applies force to the slider 9, so that the second slot 8 on the slider 9 can slide on the stop block 6. The slider 9 slides away from the opening end of the housing 1, and the slide rod 13 slides in the direction of the spring 11 in the third limiting groove 12. Since the directions of the second slope 1201 and the third slope 1202 are opposite, the slide rod 13 first slides in the direction of the second slope 1201, and then passes over the stop bar 1205 on the same side until the slide rod 13 is stuck between the stop bar 1205 and the arc groove 1204, thus fixing the PTC heating plate 2 inside the housing 1.

[0035] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A detachable PTC heater, comprising a housing (1), characterized in that, The outer shell (1) is equipped with a PTC heating plate (2). The outer shell (1) has a first slot (3) on both sides that cooperates with the PTC heating plate (2). The first slot (3) is provided with a second limiting slot (4) on the side near the first stop (202). The first slot (3) is provided with a block (6) at the end away from the second limiting slot (4). A slider (9) is slidably provided on the block (6). The lower surface of the slider (9) is provided with a second slot (8). The bottom of the slider (9) is provided with a first limiting block (7). A connecting block (901) is fixedly provided at one end of the slider (9) near the first limiting block (7). A first connecting post (10) is fixedly provided above the connecting block (901). One end of a spring (11) is fixedly provided on the first connecting post (10). The other end of the spring (11) is fixedly connected to the second connecting post (1001). A third limiting groove (12) is provided on the upper surface of the slider (9) near the connecting block (901).

2. The detachable PTC heater according to claim 1, characterized in that, The PTC heating plate (2) has a first limiting groove (201) and a first stop (202) in the middle of one side. The second limiting groove (4) is trapezoidal in shape. The top surface of the second limiting groove (4) is close to the opening end of the outer shell (1). The length of the top surface of the second limiting groove (4) is less than the bottom surface of the second limiting groove (4).

3. A detachable PTC heater according to claim 2, characterized in that, The card block (6) has a first ramp (5) on one side, and the slope of the first ramp (5) near the opening end of the outer shell (1) is lower than the slope away from the opening end of the outer shell (1).

4. A detachable PTC heater according to claim 3, characterized in that, One end of the first limiting block (7) is fixedly connected to the slider (9), and the other end of the first limiting block (7) is raised upward; the second connecting post (1001) is fixedly connected inside the outer shell (1).

5. A detachable PTC heater according to claim 1, characterized in that, The third limiting groove (12) is Y-shaped. A second ramp (1201) is provided at one side of the third limiting groove (12), and a third ramp (1202) is provided at the other side of the third limiting groove (12).

6. A detachable PTC heater according to claim 5, characterized in that, The height of the second ramp (1201) is gradually lowered towards the spring (11), and the height of the third ramp (1202) is gradually raised towards the spring (11).

7. A detachable PTC heater according to claim 6, characterized in that, The third limiting groove (12) is fixedly provided with a second stop (1203) at the bifurcation. The second stop (1203) is V-shaped and has an arc groove (1204) on the side of the second stop (1203) facing the spring (11). The arc groove (1204) has a stop bar (1205) on both sides and the stop bar (1205) is fixed on the upper surface of the slider (9).

8. A detachable PTC heater according to claim 7, characterized in that, The slope of the baffle (1205) near the second slope (1201) gradually increases towards the arc groove (1204), and the slope of the baffle (1205) near the third slope (1202) gradually decreases towards the arc groove (1204); a matching slide rod (13) is provided in the third limiting groove (12), one end of the slide rod (13) is rotatably connected to the inside of the outer shell (1), and the other end of the slide rod (13) is slidably disposed in the third limiting groove (12).

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