PTC electric heater convenient to install

Abstract

The utility model relates to the technical field of PTC (Positive Temperature Coefficient) electric heaters, in particular to a PTC electric heater convenient to mount, which comprises a fixed outer frame, a heater main body and two mounting plates, one ends, far away from each other, of the two mounting plates are connected with limiting blocks, and the top end, close to the two limiting blocks, of the fixed outer frame is provided with a limiting groove; the limiting blocks are inserted into the adjacent limiting grooves in a sliding mode, the mounting plate is conveniently and preliminarily fixed, labor is saved during mounting, the fixing pins are pulled and rotated to enable the positioning holes to leave the positioning rods, one ends of the fixing pins are conveniently inserted into the fixing grooves, and the mounting plate can be further limited and fixed; the fixing pin can be guided through the guide block installed on the outer wall of the movable annular plate, so that the fixing pin cannot rotate in the movable groove, the fixing pin is not prone to leaving the fixing groove through the spring connected to one end of the movable annular plate, the fixing effect on the mounting plate is enhanced, and the problems that after long-time use, bolts are prone to loosening, and the service life is prolonged are solved. And the stability of the PTC electric heater is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of PTC electric heaters, in particular to a PTC electric heater convenient for installation. Background Technique

[0002] The PTC electric heater is composed of a PTC ceramic heating element and an aluminum tube. It is an electric heater with automatic constant temperature and power saving. Its prominent feature lies in its safety performance. Under any application conditions, it will not produce the surface "reddening" phenomenon of heaters such as electric heating tubes, thus causing safety hazards such as scalding and fire.

[0003] In the prior art, bolts are usually used to fixedly install the PTC electric heater. However, the existing PTC electric heaters are relatively laborious to install, and the bolts are prone to looseness after long-term use, affecting the stability of the PTC electric heater. For this reason, we propose a PTC electric heater convenient for installation. Content of the Utility Model

[0004] The purpose of the utility model is to provide a PTC electric heater convenient for installation to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A PTC electric heater convenient for installation, comprising: a fixed outer frame, a heater main body and two mounting plates. One end of each of the two mounting plates away from each other is connected with a limiting block, and a limiting groove is opened at the top of the fixed outer frame close to the two limiting blocks;

[0006] A fixing pin is installed at the top of one end of the fixed outer frame. A moving ring plate is fixedly sleeved on the outer wall of the fixing pin. One end of the moving ring plate is connected with a spring. Fixing grooves are opened on the side walls of the two mounting plates close to the fixing pin;

[0007] A positioning groove is opened on the outer wall of the fixed outer frame close to the moving ring plate. A guiding block is fixedly installed on the outer wall of the moving ring plate. A positioning hole is opened on the surface of the guiding block. A positioning rod is installed on the inner wall of the positioning groove.

[0008] Preferably, both of the two mounting plates are L-shaped. One end of each of the two mounting plates is fixedly installed on the heater main body. The other ends of the two mounting plates are fixedly connected to the adjacent limiting blocks, and rubber pads are provided at the top ends of the two mounting plates and the inner bottom wall of the fixed outer frame.

[0009] Preferably, the cross sections of the two limiting blocks and the two limiting grooves are both T-shaped. The outer walls of the two limiting blocks are slidably connected to the inner walls of the adjacent limiting grooves, and a number of balls are rotatably installed on the outer walls of the two limiting blocks away from each other.

[0010] Preferably, a top plate is installed at the top end of the fixed outer frame. Bolts are installed at the four corners of the top end of the top plate, and protective nets are provided in the middle of the top plate and at both ends of the fixed outer frame close to the heater body.

[0011] Preferably, one end of the positioning groove close to the moving ring plate is connected and communicated with a moving groove, and one end of the moving groove away from the positioning groove is connected and communicated with a contraction groove. One end of the fixing pin passes through the positioning groove, the moving groove and the contraction groove in sequence and is inserted into the interior of the fixed outer frame.

[0012] Preferably, the spring is sleeved outside the fixing pin. One end of the spring is fixedly installed on the inner wall of one end of the contraction groove, the other end of the spring is fixedly connected with the moving ring plate, and the outer wall of the moving ring plate is slidably connected with the inner wall of the moving groove.

[0013] Preferably, two guiding blocks are symmetrically provided and fixedly installed on both sides of the moving ring plate, and two positioning rods are symmetrically provided and fixedly installed on the inner wall of the positioning groove.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] In the present utility model, by sliding the limiting block into the adjacent limiting groove, it is convenient to initially fix the mounting plate, and the installation is relatively labor-saving. By pulling and rotating the fixing pin, the positioning hole is separated from the positioning rod, so that one end of the fixing pin can be inserted into the fixing groove, which can further limit and fix the mounting plate. Through the guiding block installed on the outer wall of the moving ring plate, the fixing pin can be guided so that it will not rotate in the moving groove. Through the spring connected to one end of the moving ring plate, the fixing pin is not easy to leave the fixing groove, thereby strengthening the fixing effect on the mounting plate, and solving the problem that the bolts are easy to loosen after long-term use, affecting the stability of the PTC electric heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a three-dimensional sectional schematic diagram of the overall structure of the present utility model;

[0018] Figure 3 is a three-dimensional schematic diagram of the structure of the mounting seat of the present utility model;

[0019] Figure 4 is a three-dimensional schematic diagram of the internal part of the local structure of the present utility model;

[0020] Figure 5 is an exploded schematic diagram of the local structure of the present utility model.

[0021] In the figure: 1. Fixed outer frame; 2. Heater main body; 3. Mounting plate; 4. Limit block; 5. Limit groove; 6. Ball; 7. Rubber pad; 8. Top plate; 9. Bolt; 10. Fixed groove; 11. Fixed pin; 12. Spring; 13. Shrinkage groove; 14. Movable ring plate; 15. Guide block; 16. Movable groove; 17. Positioning hole; 18. Positioning groove; 19. Positioning rod; 20. Protective net. Detailed implementation mode

[0022] In order to clearly and completely describe the purpose, technical solution of the present utility model and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] For the purposes of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are set forth in order to provide a thorough understanding of the embodiments. However, it is obvious that, for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures are not described in detail so as not to unnecessarily obscure these embodiments. Additionally, all embodiments may be used in combination with each other.

[0026] Please refer to Figures 1 to 5 , the present utility model provides a technical solution: a PTC electric heater that is easy to install, comprising: a fixed outer frame 1, a heater main body 2, and two mounting plates 3. At one end of each of the two mounting plates 3 that are away from each other, a limiting block 4 is connected. At the top of the fixed outer frame 1 near the two limiting blocks 4, a limiting groove 5 is provided; both of the two mounting plates 3 are L-shaped. One end of each of the two mounting plates 3 is fixedly installed on the heater main body 2, and the other end of each of the two mounting plates 3 is fixedly connected to the adjacent limiting block 4. Moreover, rubber pads 7 are provided on the top of both of the two mounting plates 3 and the inner bottom wall of the fixed outer frame 1, which is convenient for improving the stability of the mounting plates 3 inside the fixed outer frame 1. The cross-sections of both the two limiting blocks 4 and the two limiting grooves 5 are T-shaped. The outer walls of the two limiting blocks 4 are slidably connected to the inner walls of the adjacent limiting grooves 5. Moreover, a plurality of balls 6 are rotatably installed on the outer walls of the two limiting blocks 4 that are away from each other, which is convenient for inserting the limiting blocks 4 and limiting the mounting plates 3. A top plate 8 is installed at the top of the fixed outer frame 1. Bolts 9 are installed at the four corners of the top of the top plate 8. Moreover, protective nets 20 are provided in the middle of the top plate 8 and at both ends of the fixed outer frame 1 near the heater main body 2, which is convenient for strengthening the fixing effect on the mounting plates 3.

[0027] A fixing pin 11 is installed at the top of one end of the fixed outer frame 1. A moving ring plate 14 is fixedly sleeved on the outer wall of the fixing pin 11. One end of the moving ring plate 14 is connected to a spring 12. Fixing grooves 10 are provided on the side walls of both of the two mounting plates 3 near the fixing pin 11. Moreover, there are four fixing pins 11 symmetrically arranged. The four fixing pins 11 are respectively installed at one end of the side walls of the fixed outer frame 1 near the two mounting plates 3; the spring 12 is sleeved outside the fixing pin 11. One end of the spring 12 is fixedly installed on the inner wall of one end of the contraction groove 13, and the other end of the spring 12 is fixedly connected to the moving ring plate 14. The outer wall of the moving ring plate 14 is slidably connected to the inner wall of the moving groove 16, so that the fixing pin 11 is not easily separated from the fixing groove 10, which is convenient for strengthening the limiting effect on the mounting plates 3.

[0028] A positioning groove 18 is formed in the outer wall of the fixed outer frame 1 close to the outer wall of the movable ring plate 14. A guide block 15 is fixedly installed on the outer wall of the movable ring plate 14. A positioning hole 17 is formed on the surface of the guide block 15. A positioning rod 19 is installed on the inner wall of the positioning groove 18. One end of the positioning groove 18 close to the movable ring plate 14 is communicated with a movable groove 16. One end of the movable groove 16 far from the positioning groove 18 is communicated with a contraction groove 13. One end of the fixing pin 11 sequentially passes through the positioning groove 18, the movable groove 16 and the contraction groove 13 and is inserted into the inside of the fixed outer frame 1, facilitating the insertion of one end of the fixing pin 11 into the fixing groove 10. Two guide blocks 15 are symmetrically arranged and fixedly installed on both sides of the movable ring plate 14. Two positioning rods 19 are symmetrically arranged and fixedly installed on the inner wall of the positioning groove 18, facilitating the limitation of the fixing pin 11 when the fixing pin 11 leaves the fixing groove 10.

[0029] When the device works, by pulling the fixing pin 11, the movable ring plate 14 is separated from the movable groove 16. When the fixing pin 11 is located in the positioning groove 18, the fixing pin 11 can be rotated so that the positioning hole 17 on the guide block 5 is aligned with the positioning rod 19. Furthermore, the positioning rod 19 can pass through the positioning hole 17, enabling one end of the fixing pin 11 to remain in the telescopic groove 13. At this time, the spring 12 is in a stretched state. By sliding the limiting block 4 into the adjacent limiting groove 5, the mounting plate 3 can be preliminarily fixed, and the installation is relatively labor-saving. The top end of the mounting plate 3 is limited by the bolt 9. The protective net 20 can prevent sundries from entering the fixed outer frame 1 and affecting the heat dissipation effect of the heater main body 2. By pulling and rotating the fixing pin 11, the positioning hole 17 is separated from the positioning rod 19, facilitating the insertion of one end of the fixing pin 11 into the fixing groove 10, which can further limit and fix the mounting plate 3. The guide block 15 installed on the outer wall of the movable ring plate 14 can guide the fixing pin 11 so that it does not rotate in the movable groove 16. The spring 12 connected to one end of the movable ring plate 14 makes the fixing pin 11 not easily leave the fixing groove 10, thereby strengthening the fixing effect on the mounting plate 3 and solving the problem that the bolts are prone to loosen after long-term use, affecting the stability of the PTC electric heater.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PTC electric heater that is easy to install, comprising: A fixed outer frame (1), a heater body (2) and two mounting plates (3), characterized in that: the ends of the two mounting plates (3) that are away from each other are connected to the limiting blocks (4), and the fixed outer frame (1) is provided with limiting grooves (5) near the top ends of the two limiting blocks (4); A fixing pin (11) is installed on the top of one end of the fixed outer frame (1), a movable ring plate (14) is fixedly sleeved on the outer wall of the fixing pin (11), one end of the movable ring plate (14) is connected to a spring (12), and fixing grooves (10) are provided on the side walls of the two mounting plates (3) near the fixing pin (11); A positioning groove (18) is provided on the outer wall of the fixed outer frame (1) close to the movable ring plate (14); a guide block (15) is fixedly installed on the outer wall of the movable ring plate (14); a positioning hole (17) is provided on the surface of the guide block (15); and a positioning rod (19) is installed on the inner wall of the positioning groove (18).

2. The PTC electric heater that is easy to install according to claim 1 is characterized in that: The two mounting plates (3) are both L-shaped, one end of the two mounting plates (3) is fixedly mounted on the heater body (2), the other end of the two mounting plates (3) is fixedly connected to the adjacent limit block (4), and the top ends of the two mounting plates (3) and the inner bottom wall of the fixed outer frame (1) are both provided with rubber pads (7).

3. The PTC electric heater that is easy to install according to claim 1 is characterized in that: The cross-sections of the two limit blocks (4) and the two limit grooves (5) are both T-shaped, the outer walls of the two limit blocks (4) are slidably connected to the inner walls of the adjacent limit grooves (5), and a plurality of balls (6) are rotatably mounted on the outer walls of the ends of the two limit blocks (4) that are away from each other.

4. The PTC electric heater that is easy to install according to claim 1 is characterized in that: A top plate (8) is installed at the top of the fixed outer frame (1), bolts (9) are installed at the four corners of the top of the top plate (8), and protective nets (20) are provided at the middle of the top plate (8) and at both ends of the fixed outer frame (1) close to the heater body (2).

5. The PTC electric heater that is easy to install according to claim 1, characterized in that: One end of the positioning groove (18) close to the movable ring plate (14) is connected to the movable groove (16), and one end of the movable groove (16) away from the positioning groove (18) is connected to the shrinkage groove (13); one end of the fixing pin (11) passes through the positioning groove (18), the movable groove (16) and the shrinkage groove (13) in sequence and is inserted into the interior of the fixed outer frame (1).

6. The PTC electric heater that is easy to install according to claim 1, characterized in that: The spring (12) is sleeved on the outside of the fixed pin (11), one end of the spring (12) is fixedly mounted on the inner wall of one end of the contraction groove (13), the other end of the spring (12) is fixedly connected to the movable ring plate (14), and the outer wall of the movable ring plate (14) is slidably connected to the inner wall of the movable groove (16).

7. The PTC electric heater that is easy to install according to claim 1, characterized in that: The guide blocks (15) are symmetrically provided with two and fixedly mounted on both sides of the movable ring plate (14), and the positioning rods (19) are symmetrically provided with two and fixedly mounted on the inner wall of the positioning groove (18).

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