A heat-sensitive resistor bearing jig

Abstract

The utility model discloses a kind of thermistor bearing jigs, open square groove is set in the four peripheral edges and middle of thermistor bearing area corresponding thermistor bearing part, that is, first square groove, second square groove and third square groove, first square groove, second square groove and third square groove are all set in the direction of bearing part far from the orthographic projection area of thermistor chip in bearing part, to enlarge the area of bearing part in specific area, can effectively avoid the problem that thermistor chip with size difference around and in the middle of bearing part cannot be put into bearing part, and because bearing part edge has first square groove, second square groove and third square groove to bleed and provide operating space, so that the feeding and discharging of thermistor chip are also more convenient, the main size design of bearing part can be more close to the product specification of thermistor, avoid the problem that larger electrode eccentricity appears when thermistor is printed.

Description

Technical Field

[0001] This utility model relates to a thermistor support fixture, and more particularly to a thermistor support fixture that is convenient for loading and unloading and has high production performance for thermistors. Background Technology

[0002] Existing square-shaped thermistor products are mostly manufactured using a dry pressing process. Because these products are generally large, the density of the formed blank differs slightly from the center due to the molding mechanism and the uniformity of the powder. This results in differences in length and width between the periphery and the center of the sintered ceramic sheet. For example... Figure 1 and Figure 2 As shown, existing printing jigs generally employ a design with circular holes 1a at the four corners of the thermistor carrier portion. The size of the carrier portion is crucial; if it is too small, the ceramic sheet may not fit into the jig; if it is too large, it may affect electrode alignment during printing, causing electrode misalignment. Because existing technologies use circular holes 1a at the four corners of the carrier portion, the shape of the carrier portion directly corresponds to the orthographic projection of the thermistor sheet 20, placing high demands on the area design of the carrier portion. If the carrier portion is too small, some thermistor ceramic sheets 20 with dimensional deviations at the four corners and in the middle cannot fit, and the small gap during loading and unloading causes inconvenience. If the carrier portion is too large, it may affect electrode alignment of the thermistor sheet during printing, causing electrode misalignment.

[0003] Therefore, it is necessary to propose an improvement to overcome the shortcomings of the existing technology. Utility Model Content

[0004] The purpose of this invention is to solve the problems in the prior art and provide a thermistor support fixture that is convenient for loading and unloading and has high production performance.

[0005] The technical solution of this utility model is: a thermistor carrier fixture, comprising multiple thermistor carrier areas, each thermistor carrier area being used to carry a square thermistor sheet. Each thermistor carrier area includes a carrier portion corresponding to the orthographic projection of the thermistor sheet, the carrier portion being square in shape corresponding to the thermistor sheet. The carrier portion is enclosed by a long side group and a wide side group, the long side group including at least two long sides, the wide side group including at least two wide sides, and the two ends of each long side being connected to the two wide sides respectively; a first square groove is provided at both ends of each long side. A second square groove is provided between the two first square grooves, and the first square groove and the second square groove are connected by a supporting edge; a third square groove is provided at both ends of each of the wide sides, and a supporting edge is also provided between the two third square grooves, and the two third square grooves are connected by the supporting edge; the first square groove, the second square groove and the third square groove are all connected to the bearing part, and the first square groove is connected to the third square groove adjacent to it; the first square groove, the second square groove and the third square groove are all located in the direction away from the thermistor sheet in the orthographic projection area of ​​the bearing part.

[0006] As a preferred technical solution, the width of the first square groove, the second square groove, and the third square groove is 1 to 3 millimeters.

[0007] As a preferred technical solution, the lengths of the first square groove and the second square groove are 10% to 40% of the length of the long side.

[0008] As a preferred technical solution, the length of the third-party groove is 15% to 40% of the length of the wide side.

[0009] As a preferred technical solution, multiple second square grooves are provided, and the multiple second square grooves are connected by the supporting edge.

[0010] As a preferred technical solution, at least one fourth groove is provided between the two third grooves, and the third groove and the fourth groove are connected by a supporting edge.

[0011] As a preferred technical solution, the positions where the first square groove, the second square groove, the third square groove, and the supporting edge connect are all set with rounded corners.

[0012] As a further preferred technical solution, the radius of the fillet is set to 0.5 to 2.5 mm.

[0013] This utility model discloses a thermistor carrier fixture, which has open square grooves (i.e., a first square groove, a second square groove, and a third square groove) around the perimeter and center of the thermistor carrier portion corresponding to the thermistor carrier area. These grooves are all located away from the thermistor sheet's projected area on the carrier portion, thereby expanding the carrier portion's area in a specific region. This effectively avoids the problem of thermistor sheets with size differences around the perimeter and center not fitting into the carrier portion. Furthermore, the first, second, and third square grooves at the edges of the carrier portion provide venting and operating space, making the loading and unloading of the thermistor sheets more convenient. The main dimensions of the carrier portion can be designed to more closely match the thermistor's product specifications, avoiding significant electrode misalignment during thermistor printing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a thermistor-bearing fixture in the prior art; Figure 2 for Figure 1 Schematic diagram of the combination of the thermistor carrier fixture and the thermistor; Figure 3 This is a schematic diagram illustrating a specific embodiment of a thermistor bearing fixture according to the present invention; Figure 4 for Figure 3 The diagram shows a combination of a thermistor carrier fixture and a thermistor sheet. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] The terminology used in the embodiments of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. The singular forms “a,” “said,” and “the” used in the embodiments of this utility model and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise; “multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0017] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0018] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0019] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0020] like Figure 3 and Figure 4 The image shows a specific embodiment of a thermistor-bearing fixture according to this utility model. This embodiment of the thermistor-bearing fixture includes multiple thermistor-bearing areas. Each thermistor-bearing area is used to support a square thermistor sheet 20. Each thermistor-bearing area includes a bearing portion corresponding to the orthographic projection shape of the thermistor sheet 20. The bearing portion is square, corresponding to the shape of the thermistor sheet 20. The square bearing portion is enclosed by a long side group and a wide side group, forming a closed shape. The long side group includes at least two long sides, and the wide side group includes at least two wide sides. The two ends of the long sides are respectively connected to the two wide sides. Figure 3As shown, each long side has a first square groove 1 and a first square groove 5 at its end, and a second square groove 3 is provided between the first square groove 3 and the first square groove 5. The first square groove 1 and the second square groove 3 are connected by a supporting edge 2, and the second square groove 3 and the first square groove 5 are connected by a supporting edge 4. Each wide side has a third square groove 7 and a third square groove 9 at its end, and a supporting edge 8 is provided between the third square groove 7 and the third square groove 9. The third square groove 7 and the third square groove 9 are connected by a supporting edge 8. In this embodiment, the first square groove 1, the supporting edge 2, the second square groove 3, the supporting edge 4, the first square groove 5, the third square groove 7, the supporting edge 8, and the third square groove 9 are interconnected and together form the thermistor bearing area. In this embodiment, the first square groove 1, the second square groove 3, the first square groove 5, the third square groove 7, and the third square groove 9 are all connected to the supporting part. The groove depth of the first square groove 1, the second square groove 3, the first square groove 5, the third square groove 7, and the third square groove 9 is the same as the depth of the supporting part. The first square groove 1 is connected to the adjacent third square groove, and the first square groove 5 is connected to the adjacent third square groove 7. Furthermore, the groove direction of the first square groove 1, the second square groove 3, the first square groove 5, the third square groove 7, and the third square groove 9 is the direction of the supporting part away from the thermistor sheet 20 in the orthographic projection area of ​​the supporting part. In this embodiment, the first square groove 1, the second square groove 3, the first square groove 5, the third square groove 7, and the third square groove 9 are set with extended square grooves at the four corners and the middle area of ​​the long side on the basis of the orthographic projection area of ​​the thermistor sheet 20 of the supporting part, thereby expanding the area of ​​the supporting part in a specific area. The design of the support side 2, the support side 4, and the support side 8 can be used to locate the position of the thermistor sheet 20. The thermistor carrier fixture of this embodiment can effectively avoid the problem that thermistor sheets with size differences around and in the middle of the carrier part cannot be placed in the carrier part. Furthermore, since the first square groove, the second square groove and the third square groove on the edge of the carrier part are used for air venting and to provide operating space, the loading and unloading of the thermistor sheets is also more convenient. The main body size design of the carrier part can be closer to the product specifications of the thermistor sheet, avoiding the problem of large electrode eccentricity during the printing of the thermistor.

[0021] Based on the specific dimensions of the thermistor sheet and the overall design of the thermistor-bearing fixture, in this embodiment, the widths of the first square groove 1, the second square groove 3, the first square groove 5, the third square groove 7, and the third square groove 9 are 1 to 3 millimeters. The lengths of the first square groove 1, the second square groove 3, and the first square groove 5 are 10% to 40% of the length of their longer sides. The lengths and widths of the first square groove 1, the second square groove 3, the first square groove 5, the third square groove 7, and the third square groove 9 can be vertically adjusted according to the specific size of the thermistor sheet 20.

[0022] In practical applications, if the thermistor sheet 20 is too long, multiple second square slots can be provided, and these slots can be connected by support edges. Similarly, if the thermistor sheet 20 is too wide, a fourth square slot can be provided between two third square slots. There can be one or multiple fourth square slots, and the third and fourth square slots can also be connected by support edges.

[0023] like Figure 3 As shown in this embodiment, a thermistor-bearing fixture has rounded corners at the connections between the first square groove 1, the supporting edge 2, the second square groove 3, the supporting edge 4, the first square groove 5, the third square groove 7, the supporting edge 8, and the third square groove 9. Specifically, the connection between the first square groove 1 and the supporting edge 2 has a rounded corner 11; the connection between the second square groove 3 and the supporting edge 4 has a rounded corner 10; and the connection between the first square groove 5 and the third square groove 7 has a rounded corner 6. These rounded corners effectively prevent dust accumulation, making cleaning easier. Furthermore, they prevent hand scratches caused by sharp connection points during the processing of the thermistor sheet 20, and also prevent scratches from collisions between the thermistor sheet 20 and edges, which could result in cosmetic or performance defects. In practical applications, the radius of the rounded corners is set to 0.5 to 2.5 mm, and can be flexibly adjusted as needed.

[0024] Therefore, compared with the prior art, the thermistor carrier fixture of this embodiment is easier to load and unload, the size of the carrier part of each thermistor sheet can be designed to be closer to the product specification line, and the electrode eccentricity can be effectively reduced when printing the thermistor sheet electrode on the ceramic sheet.

[0025] To demonstrate that the thermistor carrier fixture of this embodiment significantly reduces the performance and appearance defects of thermistor sheets during thermistor processing compared to existing thermistor carrier fixtures, and effectively avoids the problem of thermistor sheets not being able to be placed in the carrier, this embodiment's thermistor carrier fixture and existing thermistor carrier fixtures simultaneously processed thermistor sheets with a length of 24±0.2mm and a width of 15±0.2mm, and the printing screen size was 22±0.1mm in length and 13±0.1mm in width, with a batch size of 1000 sheets. The results of electrode misalignment, appearance defects, and inability to fit into the carrier fixture are shown in Table 1. The thermistor carrier fixture of this embodiment can reduce defects by about 3%, and after multiple uses, the edges and corners are visually free of dust.

[0026] Table 1 This utility model discloses a thermistor carrier fixture, which has open square grooves (i.e., a first square groove, a second square groove, and a third square groove) around the perimeter and center of the thermistor carrier portion corresponding to the thermistor carrier area. These grooves are all located away from the thermistor sheet's projected area on the carrier portion, thereby expanding the carrier portion's area in a specific region. This effectively avoids the problem of thermistor sheets with size differences around the perimeter and center not fitting into the carrier portion. Furthermore, the first, second, and third square grooves at the edges of the carrier portion provide venting and operating space, making the loading and unloading of the thermistor sheets more convenient. The main dimensions of the carrier portion can be designed to more closely match the thermistor's product specifications, avoiding significant electrode misalignment during thermistor printing.

[0027] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of the claims of this utility model should fall within the technical scope of this utility model.

Claims

1. A thermistor carrier fixture, comprising a plurality of thermistor carrier areas, wherein the thermistor carrier areas are used to carry square thermistor sheets, characterized in that: The thermistor bearing area includes a bearing portion corresponding to the orthographic projection of the thermistor sheet. The bearing portion is square in shape, corresponding to the shape of the thermistor sheet. The bearing portion is enclosed by a long side group and a wide side group. The long side group includes at least two long sides, and the wide side group includes at least two wide sides. The two ends of the long side are respectively connected to the two wide sides. A first square groove is provided at both ends of each long side, and a second square groove is provided between the two first square grooves. The first square groove and the second square groove are connected by a supporting edge. A third square groove is provided at both ends of each wide side, and a supporting edge is also provided between the two third square grooves. The two third square grooves are connected by the supporting edge. The first square groove, the second square groove, and the third square groove are all connected to the bearing portion. The first square groove is connected to the adjacent third square groove. The first square groove, the second square groove, and the third square groove are all located in the direction away from the thermistor sheet in the orthographic projection area of ​​the bearing portion.

2. The thermistor bearing fixture according to claim 1, characterized in that: The width of the first square groove, the second square groove, and the third square groove is 1 to 3 millimeters.

3. The thermistor bearing fixture according to claim 1, characterized in that: The lengths of the first square groove and the second square groove are 10% to 40% of the length of the long side.

4. The thermistor bearing fixture according to claim 1, characterized in that: The length of the third-party slot is 15% to 40% of the width of the side.

5. The thermistor bearing fixture according to claim 1, characterized in that: The second square groove is provided in multiple ways, and the multiple second square grooves are connected to each other through the supporting edge.

6. The thermistor bearing fixture according to claim 1, characterized in that: At least one fourth slot is provided between the two third slots, and the third slot and the fourth slot are connected by a support edge.

7. The thermistor bearing fixture according to claim 1, characterized in that: The positions where the first square groove, the second square groove, the third square groove, and the supporting edge connect are all rounded.

8. The thermistor bearing fixture according to claim 7, characterized in that: The radius of the fillet is set to 0.5 to 2.5 mm.

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