Resistance sorting device for ceramic heating plates

Abstract

The utility model discloses a resistance sorting device of a ceramic heating sheet, which comprises a test seat for placing the ceramic heating sheet and a plurality of conductive pieces capable of elastically stretching, the test seat is provided with a plurality of placing grooves, and the groove bottoms of the placing grooves are provided with the conductive pieces. The elastic telescopic ends, facing the groove openings of the placing grooves, of the conductive pieces are used for abutting against the electrodes, facing the groove bottoms of the placing grooves, of the corresponding ceramic heating pieces and forming electric connection arrangement, the multiple conductive pieces are electrically connected with one another and form an electric connection common end, and the electric connection common end is used for being electrically connected with the first wiring end of the resistance testing unit. The electrode, facing the notch of the corresponding placing groove, of each ceramic heating sheet is electrically connected with the second wiring end of the resistance testing unit, so that the resistance of each ceramic heating sheet can be quickly tested and sorted, and excessive pressure can be prevented from being applied to the positive electrode and the negative electrode of the ceramic heating sheet during resistance testing; therefore, the resistance test accuracy is ensured, and the resistance test efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to resistance test technical field, especially relate to a resistance sorting device of ceramic heating sheet. BACKGROUND

[0002] The ceramic heating sheet products on the market need to be tested one by one before leaving factory to sort out qualified products.

[0003] The ceramic heating sheet adopts leadless structure at present, that is, the positive and negative poles are arranged on the front and back surfaces of the ceramic heating sheet respectively, and the outer dimension can be 9.5*5.0mm, therefore, if the resistance is tested by manual clamping, only one product is tested at a time, and the detection parts of two test probes of the resistance tester are pressed on the positive and negative poles of the ceramic heating sheet by hand, but because the size of the ceramic heating sheet is small, too much pressure is easily applied during resistance test, which leads to large contact resistance and large resistance test error, and the test efficiency of manual operation is low. UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides a resistance sorting device of ceramic heating sheet, which can avoid applying too much pressure on the positive and negative poles of the ceramic heating sheet during resistance test, thereby ensuring the accuracy of resistance test and improving the resistance test efficiency.

[0005] To achieve the above purpose, the utility model provides the technical scheme as follows:

[0006] The utility model provides a resistance sorting device of ceramic heating sheet, the upper and lower surfaces of the ceramic heating sheet have electrodes respectively, which comprises a test seat for placing the ceramic heating sheet and a plurality of elastic and retractable conductive parts, the test seat has a plurality of placing grooves for positioning the ceramic heating sheet, the groove bottom of each placing groove is provided with the conductive part, the elastic and retractable end of the conductive part towards the groove opening of the placing groove is used for abutting the electrode of the ceramic heating sheet corresponding thereto towards the groove bottom of the placing groove, and the electrode is electrically connected respectively, a plurality of conductive parts are electrically connected with each other and form an electrically connected common end, the electrically connected common end is used for electrically connecting the first wiring end of the resistance test unit, and the electrode of each ceramic heating sheet towards the groove opening of the corresponding placing groove is used for electrically connecting the second wiring end of the resistance test unit, so that the resistance of each ceramic heating sheet is quickly tested and sorted.

[0007] Further, the conductive part is a conductive spring needle.

[0008] Further, the test seat is provided with a conductive plate at the bottom of the test seat, the conductive plate is used for electrically connecting the first connecting terminal of the resistance testing unit; a mounting hole matched with the conductive part is formed in the bottom of the placing groove, the fixed end of the conductive part is assembled to the conductive plate and forms an electrical connection, the elastic telescopic end of the conductive part is movably arranged in the mounting hole and is used for elastically abutting against the electrode of the ceramic heating sheet facing the bottom of the placing groove; and the conductive plate is the common electrical connection terminal.

[0009] Further, the bottom of the test seat is provided with a containing groove for containing the conductive plate, and the conductive plate is assembled to the containing groove.

[0010] Further, the conductive plate is a copper conductive plate.

[0011] Further, at least one side of the placing groove is provided with a taking groove for facilitating the clamping of the ceramic heating sheet.

[0012] Further, the corner of the placing groove is provided with a giving groove, and the giving groove is used for preventing the ceramic heating sheet from being broken when being taken out or placed in.

[0013] Further, the resistance testing unit is a resistance tester, and a test pen of the resistance tester is used for abutting against the electrode of the ceramic heating sheet facing the opening of the placing groove, and the detection part of the test pen is the second connecting terminal.

[0014] The technical scheme has the following beneficial effects:

[0015] The plurality of elastic telescopic conductive parts are electrically connected with each other to form a common electrical connection terminal, and the common electrical connection terminal is used for electrically connecting the first connecting terminal of the resistance testing unit.

[0016] When the single test pen of the resistance testing unit is lightly pressed on the upward electrode of the ceramic heating sheet in the placing groove by the operator, the upward electrode of the ceramic heating sheet is electrically connected with the second connecting terminal of the resistance testing unit, and the elastic telescopic end of the conductive part elastically abuts against the electrode at the bottom of the ceramic heating sheet to avoid hard contact with each other, that is, to avoid applying excessive pressure on the positive and negative electrodes of the ceramic heating sheet during resistance testing, thereby ensuring the accuracy of resistance testing, realizing the rapid sorting of the resistance of each ceramic heating sheet, and improving the resistance testing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structural schematic view of a resistance sorting device of a ceramic heating sheet in an embodiment;

[0018] Figure 2 Fig. 2 is a structural schematic view of a resistance sorting device of a ceramic heating sheet in another embodiment; Figure 1An enlarged schematic view of the middle A region;

[0019] Figure 3 An exploded view of a resistance sorting device for ceramic heating sheets in an embodiment is shown;

[0020] Figure 4 A schematic view of a ceramic heating sheet in an embodiment is shown;

[0021] Figure 5 A resistance test schematic view of a ceramic heating sheet in an embodiment is shown. DETAILED DESCRIPTION

[0022] To further illustrate the embodiments, the drawings are provided. These drawings are part of the disclosure and are mainly used to illustrate the embodiments, and can be used in conjunction with the related description of the specification to explain the operating principle of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementations and the advantages of the present application. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0023] The present application will be further described in conjunction with the drawings and specific embodiments.

[0024] Reference Figures 1 to 5 As shown, the present embodiment provides a resistance sorting device for ceramic heating sheets (hereinafter referred to as a resistance sorting device) for one-by-one sorting and determining ceramic heating sheets 4 in a resistance test manner, and as shown Figure 4 As shown, the upper and lower surfaces of the ceramic heating sheet 4 have electrodes 41, i.e. two opposite electrodes 41 are the positive and negative electrodes.

[0025] As shown, the resistance sorting device of the present embodiment includes a plurality of elastically extendable conductive members 2 and a test seat 1 for placing a plurality of ceramic heating sheets 4. Figures 1 to 3 The test seat 1 has a plurality of placement grooves 11 for positioning each ceramic heating sheet 4, and each placement groove 11 has a conductive member 2 disposed at the groove bottom. The elastically extendable end 21 of the conductive member 2 towards the slot opening 111 of the placement groove 11 is used to abut the electrode 41 of the corresponding ceramic heating sheet 4 towards the groove bottom of the placement groove 11, and an electrical connection is formed respectively.

[0026] The conductive member 2 is a conductive spring pin, and a plurality of conductive members 2 are electrically connected to each other and form an electrical connection common end. The electrical connection common end is used to electrically connect the first wiring end of the resistance test unit 5, and the electrode 41 of each ceramic heating sheet 4 towards the slot opening 111 is used to electrically connect the second wiring end of the resistance test unit 5, so as to quickly test and sort the resistance of each ceramic heating sheet 4.

[0027]

[0028] ​In this embodiment, as shown in Figure 5 The resistance testing unit 5 is a resistance tester, and a test pen 51 of the resistance tester is used to abut against the electrode 41 of the ceramic heating sheet 4 facing the notch 111 (i.e. the electrode 41 of the ceramic heating sheet 4 facing upward), and a detection part of the test pen 51 is the second wiring end of the resistance testing unit 5.

[0029] The test seat 1 is provided with the conductive plate 3 at the bottom thereof. Specifically, the bottom of the test seat 1 is provided with a receiving groove 12 for receiving the conductive plate 3, and the conductive plate 3 is assembled in the receiving groove 12 by means of glue bonding. Specifically, the conductive plate 3 is a copper conductive plate. Of course, in other embodiments, the conductive plate 3 can also be a steel conductive plate or other metal conductive plate.

[0030] More specifically, as shown in Figure 2 The fixed end of each conductive piece 2 is assembled on the conductive plate 3 by welding and forms an electrical connection arrangement.

[0031] In addition, the groove bottom of the placing groove 11 is provided with a mounting hole 112 matched with the conductive piece 2, and the elastic stretchable end 21 of each conductive piece 2 can be movably arranged in the corresponding mounting hole 112 and used to elastically abut against the electrode 41 of the ceramic heating sheet 4 facing the groove bottom of the placing groove 11, and the stable electrical connection between the two electrodes 41 of the ceramic heating sheet 4 and the test pen 51 of the resistance tester is achieved by applying a slight pressure F as shown in Figure 5 The contact resistance between them is small, thereby ensuring more accurate resistance measurement.

[0032] In specific implementation, the conductive plate 3 is electrically connected to the first wiring end of the resistance tester by a wire, and the plurality of elastic stretchable conductive pieces 2 are electrically connected to each other on the conductive plate 3 to form an electrical connection common end. At this time, the conductive plate 3 is the electrical connection common end.

[0033] When the single test pen 51 of the resistance testing unit 5 is lightly pressed by the operating personnel on the electrode 41 of the ceramic heating sheet 4 facing upward in the placing groove 11, the electrode 41 of the ceramic heating sheet 4 facing upward is electrically connected to the second wiring end of the resistance testing unit 5, and the electrode 41 of the ceramic heating sheet 4 at the bottom is elastically abutted by the elastic stretchable end 21 of the conductive piece 2, so that the electrode 41 of the ceramic heating sheet 4 facing downward is electrically connected to the first wiring end of the resistance testing unit 5, and hard contact with each other is avoided. That is, during resistance testing, excessive pressure is avoided to be applied to the positive and negative electrodes of the ceramic heating sheet 4, thereby ensuring the accuracy of resistance testing, achieving rapid sorting of the resistance of each ceramic heating sheet 4, and improving the efficiency of resistance testing.

[0034] As shown in Figure 5As shown, when the resistance sorting device of the present embodiment is used for sorting operation, the operator only needs to quickly tap the single test pen 51 at the upward electrode 41 of each ceramic heating sheet 4, so as to realize the testing of all the ceramic heating sheets 4 on the batch processing test seat 1, thus obviously improving the testing efficiency and saving the manpower and production cost.

[0035] Further preferably, as shown in Figure 2 As shown, two sides of the placing groove 11 are provided with taking recesses 13 for conveniently clamping the ceramic heating sheet 4, so as to conveniently clamp and place the ceramic heating sheet 4 by the tweezers.

[0036] Further, as shown in Figure 2 As shown, four corners of the placing groove 11 are respectively provided with giving recesses 14, the giving recesses 14 are used for preventing the ceramic heating sheet 4 from being broken due to collision when being taken and placed, and also conveniently taking and placing the ceramic heating sheet 4 in the placing groove 11, thus further improving the resistance testing operation efficiency.

[0037] Although the present utility model is specifically shown and introduced in combination with the preferred embodiments, it should be understood by those skilled in the art that various changes can be made in form and details without departing from the spirit and scope of the present utility model defined in the appended claims, and all the changes are within the protection scope of the present utility model.

Claims

1. A resistance sorting device for a ceramic heating element, wherein the upper and lower surfaces of the ceramic heating element each have electrodes, characterized in that: The test seat comprises a plurality of elastic and retractable conductive pieces for placing ceramic heating pieces; The test seat has a plurality of placement slots for positioning the ceramic heating pieces, and each placement slot is provided with a conductive piece at the bottom of the slot, and the elastic and retractable end of the conductive piece towards the slot opening is used to abut the electrode of the ceramic heating piece corresponding to the placement slot towards the bottom of the slot, and the conductive piece is electrically connected to the electrode. The plurality of conductive pieces are electrically connected to each other and form a common electrical connection end, which is used to electrically connect the first connecting end of the resistance testing unit, and the electrode of each ceramic heating piece towards the slot opening of the corresponding placement slot is used to electrically connect the second connecting end of the resistance testing unit, so as to quickly test and sort the resistance of each ceramic heating piece.

2. The resistance sorting apparatus for ceramic heating sheets according to claim 1, characterized by: The conductive piece is a conductive spring needle.

3. A resistance sorting device for ceramic heating blades as claimed in claim 2, characterized in that: The test seat is provided with a conductive plate at the bottom, which is used to electrically connect the first connecting end of the resistance testing unit; the bottom of the placement slot is provided with a mounting hole matched with the conductive piece, and the fixed end of the conductive piece is assembled with the conductive plate and forms an electrical connection; the elastic and retractable end of the conductive piece is movably arranged in the mounting hole and is used to elastically abut the electrode of the ceramic heating piece towards the bottom of the placement slot; the conductive plate is the common electrical connection end.

4. A resistance sorting device for ceramic heating blades as claimed in claim 3, characterized in that: The bottom of the test seat is provided with a receiving slot for accommodating the conductive plate, and the conductive plate is assembled in the receiving slot.

5. The resistance sorting apparatus for ceramic heating sheets according to claim 3, characterized by: The conductive plate is a copper conductive plate.

6. An apparatus for resistance sorting of ceramic heating blades according to any one of claims 1-5, characterized in that: At least one side of the placement slot is provided with a taking groove for conveniently clamping the ceramic heating piece.

7. An apparatus for resistance sorting of ceramic heating blades as claimed in any one of claims 1 to 5, wherein: The corner of the placement slot is provided with a giving groove for preventing the ceramic heating piece from being damaged by collision when being taken out or placed.

8. The resistance sorting apparatus for ceramic heating sheets according to any one of claims 1 to 5, characterized by: The resistance testing unit is a resistance tester, and the test pen of the resistance tester is used to abut the electrode of the ceramic heating piece towards the slot opening of the placement slot, and the detection part of the test pen is the second connecting end.

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