PTC self-limiting temperature silicone rubber heater

Abstract

The utility model discloses a PTC self-limited temperature silica gel heater, including first silica gel board and second silica gel board, first silica gel board top adhere to second silica gel board, the utility model discloses in through first silica gel board top adhere to second silica gel board, and first silica gel board top is equipped with first semicircle groove with the second semicircle groove of second silica gel board below installs the resistance wire, and the resistance wire top is pressed with the pressing block, and the through -hole department of pressing block both sides is equipped with positioning assembly, and positioning assembly is driven by upper block, middle link block and lower locating block, and the circle recessed groove department of the middle part of the outer wall of upper block is inserted into the circle protruding block of the middle part of the inner wall of through -hole department, and the both sides of the first semicircle groove of first silica gel board are provided with opening part and positioning groove department respectively, and the lower locating block is placed in the positioning groove department, after the resistance wire is fixed by pressing block in first silica gel board and second silica gel board, when meeting the fracture or damage, the resistance wire is convenient to replace, avoids the whole PTC heater scrapping situation.

Description

Technical Field

[0001] This utility model relates to the field of PTC heater technology, specifically to a PTC self-regulating silicone heater. Background Technology

[0002] PTC heating elements, also known as PTC heaters, consist of PTC ceramic heating elements and aluminum tubes. They are self-regulating, energy-saving electric heaters. Currently, PTC heater silicone plates are widely used in daily life due to their convenience, small footprint, and ease of storage. However, existing PTC heater silicone plates involve directly gluing the PTC heating element's resistance wire to the silicone plate before covering it with another silicone plate. This method is inconvenient for replacing broken or damaged resistance wires, as the wires remain stuck to the silicone plate, ultimately rendering the entire PTC heater silicone plate unusable. Therefore, to address these issues, a PTC self-regulating silicone heater is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide a solution to the problems mentioned in the background.

[0004] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution: a PTC self-regulating silicone heater, including a first silicone plate and a second silicone plate, the second silicone plate being attached to the top of the first silicone plate, and a first semi-circular groove and a second semi-circular groove being respectively formed above the first silicone plate and below the second silicone plate. A resistance wire is placed in both the first and second semi-circular grooves, and a pressing block is pressed above the resistance wire. A retaining groove is provided in the second semi-circular groove, and the pressing block is placed in the retaining groove. Positioning components are inserted into both sides of the pressing block, and the positioning components include an upper driving block, a middle connecting block, and a lower positioning block. The upper driving block is rotatably connected to both sides of the pressing block, and an opening groove is formed at the top of the upper driving block. An opening and a positioning groove are respectively formed in the top of the first silicone plate, and a middle connecting block is inserted into the opening for rotatable connection, while a lower positioning block is inserted into the positioning groove for fixed connection.

[0005] Preferably, the pressing block has through holes on both sides, and a ring of protrusions is provided around the middle of the inner wall of the through hole. The upper driving block is rotatably connected inside the through hole. The top of the middle connecting block is fixedly connected below the upper driving block, and the bottom of the middle connecting block is fixedly connected to the middle of the upper part of the lower positioning block.

[0006] Preferably, a circular groove is formed around the middle of the outer wall of the upper drive block, and a circular protrusion is inserted into the circular groove for rotatable connection.

[0007] Preferably, the opening is connected to the upper part of the positioning groove, and the cross-section of the lower positioning block is the same size as the opening, while the lower positioning block passes through the opening.

[0008] Preferably, the opening groove is in the same direction as the lower positioning block, and the opening groove and the opening portion form a cross shape.

[0009] Preferably, the lower part of the pressing block is flush with the lower plane of the second silicone plate, and a second semi-circular groove is formed in the lower part of the middle of the pressing block and the lower part of the second silicone plate.

[0010] Preferably, conductive blocks are provided at the connection points of the two ends of the resistance wire, and the conductive blocks are placed between the first silicone plate and the second silicone plate.

[0011] Preferably, the conductive block is connected to an external wire, and the external wire extends out from the side where the first silicone plate and the second silicone plate are bonded together.

[0012] Compared with the prior art, this utility model has the following advantages: This invention involves attaching a second silicone plate to a first silicone plate, with a resistance wire installed in a first semi-circular groove above the first silicone plate and a second semi-circular groove below the second silicone plate. A pressing block is placed above the resistance wire, and positioning components are provided in the through holes on both sides of the pressing block. The positioning components consist of an upper driving block, a middle connecting block, and a lower positioning block. A ring protrusion in the middle of the inner wall of the through hole is inserted into a ring groove in the middle of the outer wall of the upper driving block. An opening and a positioning groove are respectively opened on both sides of the first semi-circular groove of the first silicone plate. The lower positioning block is inserted from the opening and placed in the positioning groove. After the resistance wire is fixed in the first and second silicone plates by the pressing block, it is convenient to replace the resistance wire when it breaks or is damaged, thus avoiding the scrapping of the entire PTC heater. Attached Figure Description

[0013] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0014] Figure 1 This is a schematic cross-sectional view of the present invention; Figure 2 for Figure 1 Enlarged diagram of point A in the diagram; Figure 3 for Figure 2 Enlarged diagram of point B in the diagram; Figure 4 This is a top view of the internal structure of the first silicone plate of this utility model; Figure 5 for Figure 4 Enlarged diagram of point C in the diagram; Figure 6 for Figure 4 Enlarged diagram of point D in the diagram; Figure 7 This is a side view of the positioning component structure of this utility model.

[0015] The labels in the attached diagram represent the following: 1. First silicone plate; 101. First semi-circular groove; 102. Positioning groove; 103. Opening; 2. Second silicone plate; 201. Second semi-circular groove; 202. Clip groove; 3. Resistance wire; 4. Pressing block; 401. Through hole; 402. Ring protrusion block; 5. Positioning assembly; 6. Upper drive block; 601. Opening groove; 602. Ring groove; 7. Middle connecting block; 8. Lower positioning block; 9. Conductive block; 10. External wiring. Detailed Implementation

[0016] Referring to the accompanying drawings, this utility model provides a PTC self-regulating silicone heater, including a first silicone plate 1 and a second silicone plate 2. The second silicone plate 2 is attached to the top of the first silicone plate 1, and a first semi-circular groove 101 and a second semi-circular groove 201 are respectively formed above the first silicone plate 1 and below the second silicone plate 2. A resistance wire 3 is placed in both the first semi-circular groove 101 and the second semi-circular groove 201. A pressing block 4 is pressed above the resistance wire 3, and a retaining groove 202 is provided in the second semi-circular groove 201. When the pressing block 4 is placed in the slot 202, the positioning components 5 are inserted into both sides of the pressing block 4. The positioning components 5 include an upper driving block 6, a middle connecting block 7 and a lower positioning block 8. The upper driving block 6 is rotatably connected to both sides of the pressing block 4, and an opening slot 601 is opened on the top of the upper driving block 6. An opening 103 and a positioning slot 102 are respectively opened above the first silicone plate 1. The middle connecting block 7 is inserted into the opening 103 and rotatably connected. At the same time, the lower positioning block 8 is inserted into the positioning slot 102 and fixedly connected.

[0017] In this embodiment, through holes 401 are provided on both sides of the pressing block 4, and a ring of protruding blocks 402 is provided around the middle of the inner wall of the through hole 401. At the same time, the upper driving block 6 is rotatably connected inside the through hole 401. The top of the middle connecting block 7 is fixedly connected below the upper driving block 6, and the bottom of the middle connecting block 7 is fixedly connected to the middle of the upper part of the lower positioning block 8.

[0018] A circular groove 602 is formed around the middle of the outer wall of the upper drive block 6, and a circular protrusion 402 is inserted into the circular groove 602 for rotatable connection. The opening 103 communicates with the upper part of the positioning groove 102, and the cross-section of the lower positioning block 8 is the same size as that of the opening 103, while the lower positioning block 8 passes through the opening 103. The opening groove 601 is in the same direction as the lower positioning block 8, and the opening groove 601 and the opening 103 form a cross shape.

[0019] Upper drive blocks 6 are provided on both sides of the pressing block 4, and the opening groove 601 above the upper drive block 6 is in the same direction as the lower positioning block 8. After the pressing block 4 presses on the resist wire 3, the lower positioning block 8 is inserted into the opening 103, so that the lower positioning block 8 is placed in the positioning groove 102. Then, an external tool is inserted into the opening groove 601, and the upper drive block 6 is rotated to form a cross shape between the lower positioning block 8 and the opening 103. In this way, the lower positioning block 8 is fixed in the positioning groove 102.

[0020] In this embodiment, the lower part of the pressing block 4 is flush with the lower plane of the second silicone plate 2, and a second semi-circular groove 201 is formed in the lower part of the middle of the pressing block 4 and the lower part of the second silicone plate 2.

[0021] After the pressing block 4 is pressed onto the resist wire 3, the second silicone plate 2 is attached to the first silicone plate 1, and the second semi-circular groove 201 in the second silicone plate 2 is provided with a clamping groove 202, so that the pressing block 4 is placed in the clamping groove 202, and at the same time, the middle part of the pressing block 4 arches up to form the shape of the second semi-circular groove 201 according to the shape of the resist wire 3.

[0022] In this embodiment, conductive blocks 9 are provided at the connection points of the two ends of the resist wire 3, and the conductive blocks 9 are placed between the first silicone plate 1 and the second silicone plate 2.

[0023] Furthermore, the conductive block 9 is connected to an external wiring 10, and the external wiring 10 extends out from one side after the first silicone plate 1 and the second silicone plate 2 are attached.

[0024] Working principle: A second silicone plate 2 is attached above a first silicone plate 1. A resistance wire 3 is installed in the first semi-circular groove 101 above the first silicone plate 1 and the second semi-circular groove 201 below the second silicone plate 2. A pressing block 4 is pressed above the resistance wire 3. Positioning components 5 are provided in the through holes 401 on both sides of the pressing block 4. The positioning components 5 consist of an upper driving block 6, a middle connecting block 7, and a lower positioning block 8. A ring-shaped protrusion 402 is inserted into the ring groove 602 in the middle of the outer wall of the upper driving block 6, allowing the upper driving block 6 to rotate within the pressing block 4. The middle connecting block 7 and the lower positioning block 8 are both below the bottom of the pressing block 4. An opening 103 and a positioning groove 102 are respectively opened on both sides of the first semi-circular groove 101 of the first silicone plate 1. When the pressing block 4 is pressed above the resistance wire 3, the lower positioning block 8 is inserted from the opening 103. After the lower positioning block 8 is placed in the positioning groove 102, the middle connecting block 7 is placed in the opening 103. An opening groove 601 is provided on the top of the upper driving block 6. Since the opening groove 601 is in the same direction as the lower positioning block 8, an auxiliary tool is then inserted into the opening groove 601. The upper driving block 6 is rotated so that the opening groove 601 and the opening 103 form a cross shape, and the lower positioning block 8 and the opening 103 form a cross shape. In this way, the lower positioning block 8 cannot be withdrawn from the opening 103, and the pressing block 4 is firmly pressed on the top of the resist wire 3. The second semi-circular groove 201 below the second silicone plate 2 is provided with a clamping groove 202. When the second silicone plate 2 is attached to the first silicone plate 1, the pressing block 4 is placed in the clamping groove 202, and the middle part of the pressing block 4 is arched to form the shape of the second semi-circular groove 201. In this way, the first silicone plate 1 and the second silicone plate 2 can be tightly attached together.

[0025] Furthermore, when the first silicone plate 1 and the second silicone plate 2 are bonded together, the adhesive portion avoids the first semi-circular groove 101, the second semi-circular groove 201 and the clip groove 202. When the first silicone plate 1 and the second silicone plate 2 are separated, the resist wire 3 and the pressing block 4 will not stick to the adhesive surface of the first silicone plate 1 or the second silicone plate 2.

Claims

1. A PTC self-regulating silicone heater, comprising a first silicone plate (1) and a second silicone plate (2), characterized in that: A second silicone plate (2) is attached to the top of the first silicone plate (1), and a first semi-circular groove (101) and a second semi-circular groove (201) are respectively opened above the first silicone plate (1) and below the second silicone plate (2). At the same time, a resist wire (3) is placed in both the first semi-circular groove (101) and the second semi-circular groove (201). A pressing block (4) is pressed on the top of the resist wire (3), and a clamping groove (202) is provided in the second semi-circular groove (201). At the same time, the pressing block (4) is placed in the clamping groove (202). The two pressing blocks (4) are... A positioning component (5) is inserted into the side, and the positioning component (5) includes an upper driving block (6), a middle connecting block (7) and a lower positioning block (8). The upper driving block (6) is rotatably connected to both sides of the pressing block (4), and an opening groove (601) is opened on the top of the upper driving block (6). An opening (103) and a positioning groove (102) are respectively opened above the first silicone plate (1), and the middle connecting block (7) is inserted into the opening (103) for rotatable connection, while the lower positioning block (8) is inserted into the positioning groove (102) for fixed connection.

2. The PTC self-regulating silicone heater according to claim 1, characterized in that: The pressing block (4) has through holes (401) on both sides, and a ring protrusion (402) is provided around the middle of the inner wall of the through hole (401). The upper driving block (6) is rotatably connected inside the through hole (401). The top of the middle connecting block (7) is fixedly connected below the upper driving block (6), and the bottom of the middle connecting block (7) is fixedly connected above the middle of the lower positioning block (8).

3. A PTC self-regulating silicone heater according to claim 2, characterized in that: The upper drive block (6) has a circumferential groove (602) on the middle of its outer wall, and a circumferential protrusion (402) is inserted into the circumferential groove (602) for rotatable connection.

4. A PTC self-regulating silicone heater according to claim 3, characterized in that: The opening (103) is connected to the upper part of the positioning groove (102), and the cross section of the lower positioning block (8) is the same size as the opening (103), while the lower positioning block (8) passes through the opening (103).

5. A PTC self-regulating silicone heater according to claim 4, characterized in that: The opening groove (601) is in the same direction as the lower positioning block (8), and the opening groove (601) and the opening (103) form a cross shape.

6. A PTC self-regulating silicone heater according to claim 1, characterized in that: The lower part of the pressing block (4) is flush with the lower plane of the second silicone plate (2), and a second semi-circular groove (201) is opened in the lower part of the middle of the pressing block (4) and the lower part of the second silicone plate (2).

7. A PTC self-regulating silicone heater according to claim 1, characterized in that: The resist wire (3) has conductive blocks (9) at both ends of the connection point, and the conductive blocks (9) are placed between the first silicone plate (1) and the second silicone plate (2).

8. A PTC self-regulating silicone heater according to claim 7, characterized in that: The conductive block (9) is connected to an external wire (10), and the external wire (10) extends out from the side after the first silicone plate (1) and the second silicone plate (2) are attached.

Images