PTC heater

Abstract

The utility model relates to a PTC heater, which comprises a heating body and a connecting assembly, the connecting assembly is arranged on the heating body, the connecting assembly comprises a first connecting terminal and a second connecting terminal, the first connecting terminal is connected with the heating body, and the first connecting terminal is provided with a first connecting hole; the second connecting terminal protrudes towards the first connecting terminal to form a connecting ring which is used for extending into the first connecting hole; and the connecting ring extends into the first connecting hole, and is folded after being punched to form a flange which is propped against the first connecting terminal. Through the arrangement of the connecting ring and the first connecting hole, the first connecting terminal and the second connecting terminal can be connected. Compared with the prior art that the first connecting terminal and the second connecting terminal are connected through a rivet, the cost of the rivet is saved, and the connecting cost of the first connecting terminal and the second connecting terminal is further reduced.

Description

Technical Field

[0001] The present application relates to the field of heaters, and in particular to a PTC heater. Background Art

[0002] Reference Figure 1 Typically, the PTC heater is provided with a first connecting terminal 21 and a second connecting terminal 22, the first connecting terminal 21 is provided with a first connecting hole, and the second connecting terminal 22 is provided with a second connecting hole. When connecting, the first connecting terminal 1 is overlapped with the second connecting terminal, and then the first connecting hole and the second first connecting hole are aligned, and the rivet is placed in the first connecting hole and the second first connecting hole, and then the rivet is connected to the first connecting terminal and the second connecting terminal by stamping.

[0003] Since the first connection terminal 21 and the second connection terminal 22 need to be connected with rivets, the cost of connecting the first connection terminal 21 and the second connection terminal 22 is relatively high. Utility Model Content

[0004] The purpose of the present application is to provide a PTC heater, which can reduce the cost of the first connecting terminal and the second connecting terminal, reduce the contact resistance, improve the efficiency, and reduce the risk of operation.

[0005] To this end, an embodiment of the present application provides a PTC heater, including a heating element and a connecting component, wherein the connecting component is arranged on the heating element, and the connecting component includes: a first connecting terminal, which is connected to the heating element and has a first connecting hole; a second connecting terminal; a connecting ring protruding toward the first connecting terminal and used to extend into the first connecting hole; the connecting ring extends into the first connecting hole and is folded after stamping to form a flange that abuts against the first connecting terminal.

[0006] In a possible implementation, the connecting ring is a triangular ring, and the first connecting hole is a triangular hole; or the connecting ring is a circular ring, and the first connecting hole is a circular hole; or the connecting ring is a square ring, and the first connecting hole is a square hole.

[0007] In a possible implementation manner, the connecting ring is provided in a circular ring shape, and an outer diameter of the connecting ring gradually decreases in a direction away from the second connecting terminal.

[0008] In a possible implementation, a strip hole is formed at one end of the connecting ring away from the second connecting terminal, and the strip hole extends along the height direction of the connecting ring. There are multiple strip holes, and the multiple strip holes are arranged at intervals along the circumference of the connecting ring.

[0009] In a possible implementation manner, the connecting ring is formed by stamping the second connecting terminal.

[0010] In a possible implementation manner, two connecting rings are provided and are arranged at intervals along the length direction of the second connecting terminal, and two first connecting holes are provided and are arranged at intervals along the length direction of the first connecting terminal.

[0011] In a possible implementation, a card block is disposed on a side of any one of the first connection terminal and the second connection terminal, and a card slot adapted to the card block is disposed at a position of the other of the first connection terminal and the second connection terminal corresponding to the card block.

[0012] In a possible implementation, the heating element includes a PTC element and a heat exchange bar connected to each other, the heat exchange bar is bent, and the first connecting terminal is connected to the heat exchange bar.

[0013] In a possible implementation, the heat exchange strips and the PTC elements are provided in plurality and arranged in a staggered manner, and the connection components are also provided in plurality, and the plurality of connection components are respectively connected to the plurality of heat exchange strips.

[0014] In a possible implementation, the second connection terminal is provided with a second connection hole, the second connection hole is far away from the heating element, and the second connection hole is used to connect a wiring harness.

[0015] The PTC heater provided according to the embodiment of the present application includes a heating element and a connecting component, the connecting component is arranged on the heating element, and the connecting component includes a first connecting terminal and a second connecting terminal, the first connecting terminal is connected to the heating element and the first connecting terminal is provided with a first connecting hole; the second connecting terminal protrudes toward the first connecting terminal and has a connecting ring for extending into the first connecting hole; the connecting ring extends into the first connecting hole and is folded after stamping to form a flange abutting against the first connecting terminal. The present application can connect the first connecting terminal and the second connecting terminal by setting the connecting ring and the first connecting hole. Compared with the existing method of connecting the first connecting terminal and the second connecting terminal by rivets, the present application saves the cost of rivets, thereby reducing the connection cost of the first connecting terminal and the second connecting terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0019] Figure 1 A schematic diagram showing the structure of a PTC heater in the prior art is shown;

[0020] Figure 2 A schematic diagram of the structure of a heater provided in an embodiment of the present application is shown;

[0021] Figure 3 A cross-sectional view of a second connecting terminal provided in an embodiment of the present application is shown.

[0022] Description of reference numerals:

[0023] 1. Heating element; 11. PTC element; 12. Heat exchange strip; 2. Connecting assembly; 21. First connecting terminal; 211. First connecting hole; 22. Second connecting terminal; 221. Connecting ring; 2211. Strip hole; 222. Second connecting hole; 23. Block; 24. Slot. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0025] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0026] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0027] Figure 2 A schematic diagram of the structure of a heater provided in an embodiment of the present application is shown. Figure 3 A cross-sectional view of a second connecting terminal provided in an embodiment of the present application is shown.

[0028] like Figures 2 to 3 As shown, an embodiment of the present application provides a PTC heater, the PTC heater includes a heating element 1 and a connecting component 2, the connecting component 2 is arranged on the heating element 1, the connecting component 2 includes a first connecting terminal 21 and a second connecting terminal 22, the first connecting terminal 21 is connected to the heating element 1 and the first connecting terminal 21 is provided with a first connecting hole 211; the second connecting terminal 22 protrudes toward the first connecting terminal 21 and has a connecting ring 221 for extending into the first connecting hole 211; the connecting ring 221 extends into the first connecting hole 211, and is folded after stamping to form a flange that abuts against the first connecting terminal 21.

[0029] It should be understood that the PTC heater includes a heating element 1 and a connecting assembly 2, wherein the connecting assembly 2 includes a first connecting terminal 21 and a second connecting terminal 22, wherein one end of the first connecting terminal 21 is connected to the heating element 1, and can be formed in an integral manner. The first connecting terminal 21 is block-shaped, and the first connecting terminal 21 is provided with a first connecting hole 211, and the first connecting hole 211 penetrates along the thickness direction of the first connecting terminal 21. The second connecting terminal 22 is also block-shaped, and a connecting ring 221 is provided on the side of the second connecting terminal 22 facing the first connecting terminal 21, and the connecting ring 221 is formed in an integral manner with the second connecting terminal 22.

[0030] When connecting, the second connecting terminal 22 is overlapped with the first connecting terminal 21, so that the connecting ring 221 extends into the first connecting hole 211, and the end of the connecting ring 221 facing away from the second connecting terminal 22 extends out of the first connecting hole 211. The connecting ring 221 is stamped by stamping so that the end of the connecting ring 221 extending out of the first connecting hole 211 is folded to form a flange, and the flange wraps the periphery of the first connecting hole 211, thereby connecting the first connecting terminal 21 to the second connecting terminal 22.

[0031] The present application can connect the first connection terminal 21 and the second connection terminal 22 by setting the connection ring 221 and the first connection hole 211. Compared with the existing method of connecting the first connection terminal 21 and the second connection terminal 22 by rivets, the present application saves the cost of rivets, thereby reducing the connection cost of the first connection terminal 21 and the second connection terminal 22. At the same time, since the connection ring 221 and the second connection terminal 22 are integrally formed, there is no connection gap between the connection ring 221 and the second connection terminal 22, and the flange of the connection ring 221 wraps the periphery of the first connection hole 211, thereby improving the tightness of the connection between the connection ring 221 and the first connection terminal 21, thereby reducing the contact resistance and the heat generated at the connection, and also improving the installation efficiency and the safety of the operation.

[0032] In some optional embodiments, the connecting ring 221 is a triangular ring and the first connecting hole 211 is a triangular hole, or the connecting ring 221 is in a circular ring shape and the first connecting hole 211 is a circular hole; or the connecting ring is in a square ring and the first connecting hole is a square hole. The connecting ring 221 is configured to conform to the first connecting hole 211. When the connecting ring 221 is a triangular ring, the first connecting hole 211 is a triangular hole, so that the flange of the connecting ring 221 after stamping can wrap around the side of the first connecting hole 211. When the connecting ring is square, the first connecting hole 211 is a square hole. When the connecting ring 221 is in a circular ring shape, the first connecting hole 211 is a circular hole.

[0033] In one example, the connecting ring 221 is in a circular ring shape, and the first connecting hole 211 is circular. At this time, the connecting ring 221 and the first connecting hole 211 have no corners, which avoids the unevenness of the connecting ring 221 during stamping, and further improves the tightness of the connection between the first connecting terminal 21 and the second connecting terminal 22.

[0034] In some optional embodiments, the connection ring 221 is arranged in a circular ring, and the outer diameter of the connection ring 221 gradually decreases in the direction away from the second connection terminal 22, so that the connection ring 221 can be inserted into the first connection hole 211 more smoothly, thereby improving the convenience of connecting the first connection terminal 21 with the second connection terminal 22.

[0035] In some optional embodiments, a strip hole 2211 is formed at one end of the connection ring 221 away from the second connection terminal 22, and the strip hole 2211 extends along the height direction of the connection ring 221. A plurality of strip holes 2211 are provided, and the plurality of strip holes 2211 are arranged at intervals along the circumference of the connection ring 221. Since the diameter of the end of the connection ring 221 away from the second connection terminal 22 is smaller than the diameter of the first connection hole 211, in order to improve the uniformity of stamping, a plurality of strip holes 2211 are formed at one end of the connection ring 221 away from the second connection terminal 22.

[0036] In some optional embodiments, the inner diameter of the end of the connecting ring 221 away from the second connecting terminal 22 is larger than the inner diameter of the end of the connecting ring 221 facing the second connecting terminal 22, thereby improving the convenience of stamping.

[0037] In some optional embodiments, the connection ring 221 is formed by stamping the second connection terminal 22. That is, the second connection terminal 22 is punched with a hole at the connection ring 221, and the hole penetrates along the thickness direction of the second connection terminal 22. The connection ring 221 is formed by stamping, which further reduces the cost of the second connection terminal 22 compared to the connection ring 221 being prepared by a mold.

[0038] In some optional embodiments, two connection rings 221 are provided and arranged at intervals along the length direction of the second connection terminal 22, and two first connection holes 211 are provided and arranged at intervals along the length direction of the first connection terminal 21. The two connection rings 221 and the two first connection holes 211 are provided correspondingly, which can further improve the effect of connecting the second connection terminal 22 with the first connection terminal 21.

[0039] The provision of two connecting rings 221 and two first connecting holes 211 also prevents the connecting ring 221 from being deflected along the length direction of the first connecting terminal 21 due to stamping when the first connecting terminal 21 is connected to the second connecting terminal 22, thereby further improving the connection accuracy between the first connecting terminal 21 and the second connecting terminal 22.

[0040] In some optional embodiments, a block 23 is disposed on the side of any one of the first connection terminal 21 and the second connection terminal 22 , and a slot 24 adapted to the block 23 is disposed at a position corresponding to the block 23 on the other of the first connection terminal 21 and the second connection terminal 22 .

[0041] In one example, a clamping block 23 is provided on the side of the first connection terminal 21, and a clamping groove 24 is provided on the side of the second connection terminal 22. When the first connection terminal 21 overlaps with the second connection terminal 22, the clamping block 23 extends into the clamping groove 24, thereby limiting the deflection of the connection ring 221 along the width direction of the first connection terminal 21 due to stamping, and further improving the accuracy of the connection between the first connection terminal 21 and the second connection terminal 22.

[0042] In one example, a clamping slot 24 is disposed on a side of the first connection terminal 21 , and a clamping block 23 is disposed on a side of the second connection terminal 22 .

[0043] In some optional embodiments, the heating element 1 includes a PTC element 11 and a heat exchange strip 12 connected to each other, the heat exchange strip 12 is bent, and the first connecting terminal 21 is connected to the heat exchange strip 12. The PTC element 11 is bonded to the heat exchange strip 12 to facilitate heat exchange with the PTC element 11. The heat exchange strip 12 is bent to further improve the heat exchange efficiency of the heat exchange strip 12. The first connecting terminal 21 and the heat exchange strip 12 can be integrally formed.

[0044] In some optional embodiments, a plurality of heat exchange bars 12 and PTC elements 11 are respectively provided and arranged in a staggered manner, a plurality of connection components 2 are also provided, and the plurality of connection components 2 are respectively connected to the plurality of heat exchange bars 12. The provision of the plurality of heat exchange bars 12 and PTC elements 11 can further improve the efficiency of the heating element 1.

[0045] In some optional embodiments, the second connection terminal 22 is provided with a second connection hole 222, the second connection hole 222 is far away from the heating element 1, and the second connection hole 222 is used to connect the wiring harness. The present application does not limit the shape of the second connection hole 222, and the second connection hole 222 can be a square hole, a circular hole or other shapes.

[0046] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0047] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0048] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A PTC heater, characterized in that: It includes a heating element and a connecting component, wherein the connecting component is arranged on the heating element, and the connecting component includes: A first connecting terminal connected to the heating element and having a first connecting hole; A second connecting terminal; a connecting ring protruding toward the first connecting terminal and used to extend into the first connecting hole; The connecting ring extends into the first connecting hole and is folded after being punched to form a flange that abuts against the first connecting terminal; Wherein, the connecting ring is arranged in a circular ring, and the outer diameter of the connecting ring gradually decreases in a direction away from the second connecting terminal; A strip hole is formed at one end of the connection ring away from the second connection terminal. The strip hole extends along the height direction of the connection ring. A plurality of the strip holes are provided and are arranged at intervals along the circumference of the connection ring.

2. The PTC heater according to claim 1, characterized in that: The connecting ring is a triangular ring, and the first connecting hole is a triangular hole; or the connecting ring is a circular ring, and the first connecting hole is a circular hole; or the connecting ring is a square ring, and the first connecting hole is a square hole.

3. The PTC heater according to claim 1, characterized in that: The connecting ring is formed by punching the second connecting terminal.

4. The PTC heater according to claim 1, characterized in that: Two connecting rings are provided and are arranged at intervals along the length direction of the second connecting terminal, and two first connecting holes are provided and are arranged at intervals along the length direction of the first connecting terminal.

5. The PTC heater according to claim 1, characterized in that: A clamping block is arranged at the side of any one of the first connection terminal and the second connection terminal, and a clamping slot adapted to the clamping block is arranged at a position corresponding to the clamping block at the other one of the first connection terminal and the second connection terminal.

6. The PTC heater according to claim 1, characterized in that: The heating element includes a PTC element and a heat exchange strip connected to each other, the heat exchange strip is bent, and the first connecting terminal is connected to the heat exchange strip.

7. The PTC heater according to claim 6, characterized in that: The heat exchange strips and the PTC elements are respectively provided in plurality and arranged in a staggered manner, and the connection components are also provided in plurality, and the plurality of connection components are respectively connected to the plurality of heat exchange strips.

8. The PTC heater according to claim 1, characterized in that: The second connection terminal is provided with a second connection hole, the second connection hole is far away from the heating element, and the second connection hole is used for connecting a wiring harness.

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