Fixing device for flame resistance test of household electric blanket or electric pad

Abstract

The utility model discloses a fixing device for a flame resistance test of a household electric blanket or an electric pad, which comprises a support, the upper end of the support is provided with a right-angle U-shaped supporting surface which forms an included angle of 45 degrees with the horizontal plane, and the U-shaped supporting surface is provided with a lower U-shaped frame and an upper U-shaped frame which are stacked from bottom to top. Long sliding grooves are formed in the two side edges of the lower U-shaped frame and the two side edges of the upper U-shaped frame, support screws capable of stretching into the long sliding grooves are installed on the U-shaped supporting face, the lower U-shaped frame and the upper U-shaped frame are fixed to the U-shaped supporting face through the support screws and nuts, a lower grid is fixed to the interior of the lower U-shaped frame, and a lower grid is fixed to the interior of the upper U-shaped frame. An upper grid is fixed in the upper U-shaped frame, and the upper grid is parallel to the lower grid. The utility model can quickly fix the tested sample and improve the test efficiency.

Description

Technical Field

[0001] The utility model relates to the field of flame retardant testing of household appliances, in particular to a fixing device for flame retardant testing of household electric blankets or heating pads. Background Art

[0002] Household electric blankets or heating pads are flexible heating appliances with internal insulating material. GB 4706.8-2008, "Particular Requirements for Safety of Electric Blankets, Heating Pads, and Similar Flexible Heating Appliances for Household and Similar Purposes," stipulates the following for the installation of flame retardant test specimens: A heating element or internally wired specimen at least 150 mm in length must be supported by a 45°-tilted grid made of parallel wires 0.6 mm in diameter, spaced 20 mm apart. The specimen must be placed perpendicular to the horizontal wires and centered between them. Another grid of similar dimensions must be placed on top of the specimen, with its horizontal wires 10 mm apart from those of the first grid, so that the wires of the two grids parallel to the specimen overlap. The grid must be mounted on an arched structure surrounded by metal partitions on three sides in an unventilated location. The partitions are approximately 900 mm high, 450 mm wide, and 300 mm deep, forming a rectangular shape with an open front and a closed top. In accordance with GB / T 5169.5, a needle flame is applied to the sample until the insulator stops burning.

[0003] Existing sample fixtures are generally designed only for needle flame test samples and cannot be designed according to GB

[0004] The standard installation of 4706.8-2008 uses a 45° inclined grid, which makes testing difficult and lacks efficient testing equipment. Utility Model Content

[0005] The purpose of the utility model is to provide a fixing device for flame retardant testing of household electric blankets or heating pads, so as to quickly fix the tested sample and improve the test efficiency.

[0006] The technical solution of the utility model is as follows:

[0007] A fixing device for the flammability test of a household electric blanket or electric heating pad, comprising a bracket. At the upper end of the bracket, there is a right-angled U-shaped support surface that forms an angle of 45° with the horizontal plane. On the U-shaped support surface, a lower U-shaped frame and an upper U-shaped frame are stacked and installed from bottom to top. On both sides of the lower U-shaped frame and the upper U-shaped frame, there are elongated sliding grooves. On the U-shaped support surface, there are bracket screws that can extend into the elongated sliding grooves. The lower U-shaped frame and the upper U-shaped frame are both fixed on the U-shaped support surface through the bracket screws and nuts. Inside the lower U-shaped frame, there is a lower grid fixed, and inside the upper U-shaped frame, there is an upper grid fixed. The upper grid and the lower grid are parallel to each other. On both sides of the lower U-shaped frame and the upper U-shaped frame, there are mounting holes corresponding in position. The upper U-shaped frame and the lower U-shaped frame are fixedly connected through fixing parts and the mounting holes.

[0008] In the present utility model, both the upper U-shaped frame and the lower U-shaped frame are detachably connected to the U-shaped support surface, facilitating the placement of the tested sample between the upper grid and the lower grid. At the same time, the installation positions of the upper U-shaped frame and the lower U-shaped frame can be adjusted within the elongated sliding grooves, flexibly adapting to the test requirements.

[0009] The present utility model also has the following preferred designs:

[0010] The present utility model further includes a "C"-shaped clamp for clamping the U-shaped support surface, the lower U-shaped frame, and the upper U-shaped frame. On the upper wing surface of the "C"-shaped clamp, there is a middle hole for the bracket screw to pass through. The "C"-shaped clamp can make the installation of the lower U-shaped frame and the upper U-shaped frame more stable.

[0011] The bracket of the present utility model is a frame formed by connecting vertical support feet and horizontal connecting rods.

[0012] The vertical support feet of the present utility model include two long support feet and two short support feet to ensure that the inclination angle of the U-shaped support surface is 45°.

[0013] At the bottom of the bracket of the present utility model, there is a bottom plate fixedly connected to make the bracket more stable.

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

[0015] 1. The present utility model can meet the test installation requirements of all electric blanket and electric heating pad samples in the "Requirements for the Flammability Test of Household Electric Blankets and Electric Heating Pads" in the GB 4706.8 standard, ensuring the consistency of conditions during the test, reducing test errors caused by the displacement or晃动 of the sample position, thereby improving the accuracy and reliability of the test results and ensuring the accuracy and reliability of the test.

[0016] 2. The device of the present utility model can quickly and simply fix the sample at the test position, reducing the test preparation time and improving the test efficiency.

[0017] 3. The device of the present utility model is convenient to disassemble, small in volume, saving occupied space, and does not affect the test ability of the original equipment after disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a perspective view of a fixing device for a flammability test of a household electric blanket or electric heating pad provided by the present utility model.

[0019] Figure 2 FIG. is a structural diagram of the bracket of the present utility model;

[0020] Figure 3 FIG. is a connection schematic diagram of the lower U-shaped frame and the upper U-shaped frame of the present utility model;

[0021] DESCRIPTION OF THE REFERENCE NUMERALS:

[0022] 1 - upper U-shaped frame; 2 - lower U-shaped frame; 3 - fixing member; 4 - mounting hole; 5 - nut; 6 - "C" shaped clamp; 7 - long-shaped sliding groove; 8 - bracket; 9 - bottom plate; 10 - bracket screw; 11 - grid; 12 - vertical support leg; 13 - transverse connecting rod; 14 - U-shaped support surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the purpose, technical solutions and advantages of the present utility model more obvious, the exemplary embodiments according to the present utility model will be described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments of the present utility model. It should be understood that the present utility model is not limited by the exemplary embodiments described herein. Based on the embodiments of the present utility model described herein, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present utility model, some technical features well known to those skilled in the art are not described.

[0025] It should be understood that the present utility model can be implemented in different forms and should not be construed as limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of the present utility model to those skilled in the art.

[0026] The purpose of the terms used herein is only to describe specific embodiments and is not a limitation of the present utility model. When used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising" and / or "including", when used in this specification, identify the presence of the stated features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups. When used herein, the term "and / or" includes any and all combinations of the related listed items.

[0027] To thoroughly understand the present utility model, detailed structures will be presented in the following description to illustrate the technical solutions proposed by the present utility model. The optional embodiments of the present utility model are described in detail below. However, in addition to these detailed descriptions, the present utility model may also have other embodiments.

[0028] As Figures 1 to 3 shown, a fixing device for the flammability test of a household electric blanket or electric heating pad includes a bracket 8. At the upper end of the bracket 8, there is a right-angled U-shaped support surface 14 at an angle of 45° to the horizontal plane. On the U-shaped support surface 14, a lower U-shaped frame 2 and an upper U-shaped frame 1 are stacked and installed from bottom to top. Longitudinal chutes 7 are opened on both sides of the lower U-shaped frame 2 and the upper U-shaped frame 1. On the U-shaped support surface 14, there are bracket screws 10 that can extend into the longitudinal chutes 7. The lower U-shaped frame 2 and the upper U-shaped frame 1 are both fixed on the U-shaped support surface 14 through the bracket screws 10 and nuts 5. A lower grid is fixed inside the lower U-shaped frame 2, and an upper grid is fixed inside the upper U-shaped frame 1. The upper grid and the lower grid are parallel to each other. Installation holes 4 corresponding in position are provided on both sides of the lower U-shaped frame 2 and the upper U-shaped frame 1. The upper U-shaped frame 1 and the lower U-shaped frame 2 are fixedly connected through fixing members 3 and the installation holes 4.

[0029] In one embodiment, a "C"-shaped clamp 6 for clamping the U-shaped support surface 14, the lower U-shaped frame 2 and the upper U-shaped frame 1 is also provided. A middle hole for the bracket screw 10 to pass through is opened on the upper wing surface of the "C"-shaped clamp 6. The "C"-shaped clamp 6 can make the installation of the lower U-shaped frame 2 and the upper U-shaped frame 1 more stable.

[0030] In one embodiment, the bracket 8 is a frame formed by connecting vertical support feet 12 and a transverse link 13.

[0031] In one embodiment, the vertical support feet 12 include two long support feet and two short support feet to ensure that the inclination angle of the U-shaped support surface is 45°.

[0032] In one embodiment, a bottom plate 9 is fixedly connected to the bottom of the bracket 8 to make the bracket more stable.

[0033] The upper and lower U-shaped frames 1 and 2 of the present invention are both detachably connected to the U-shaped support surface 14, making it easy to place the test sample between the upper and lower grids. Furthermore, the mounting positions of the upper and lower U-shaped frames 1 and 2 can be adjusted within the elongated chute 7, allowing for flexible adaptation to test requirements.

[0034] Most of the materials required for the manufacture of the various structures of the present invention are made of stainless steel. Screws, nuts, wires and other materials are mature standard parts and do not need to be specially customized. The materials are resistant to high temperatures and meet the requirements of combustion tests. The grids 11 of the upper and lower grids are made according to standards and are formed with wires with a diameter of 0.6 mm. These wires are parallel and 20 mm apart. The horizontal wires of the upper and lower grids are 10 mm apart, and the vertical wires are stacked in a row.

[0035] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A fixture for flame retardant testing of household electric blankets or heating pads, comprising a bracket, characterized in that: The upper end of the bracket is provided with a right-angled U-shaped support surface at an angle of 45° with the horizontal plane. A lower U-shaped frame and an upper U-shaped frame are stacked and installed on the U-shaped support surface from bottom to top. Longitudinal chutes are formed on both sides of the lower U-shaped frame and the upper U-shaped frame. Bracket screws capable of extending into the longitudinal chutes are installed on the U-shaped support surface. The lower U-shaped frame and the upper U-shaped frame are both fixed on the U-shaped support surface through the bracket screws and nuts. A lower grid is fixed inside the lower U-shaped frame, and an upper grid is fixed inside the upper U-shaped frame. The upper grid and the lower grid are parallel to each other. Installation holes corresponding in position are provided on both sides of the lower U-shaped frame and the upper U-shaped frame. The upper U-shaped frame and the lower U-shaped frame are fixedly connected through fixing members and the installation holes.

2. The fixing device for flame retardant testing of a household electric blanket or heating pad according to claim 1, characterized in that: It further includes a "C"-shaped clamp for clamping the U-shaped support surface, the lower U-shaped frame and the upper U-shaped frame. A middle hole for the bracket screw to pass through is formed on the upper wing surface of the "C"-shaped clamp.

3. The fixing device for flame retardant testing of a household electric blanket or heating pad according to claim 1, characterized in that: The bracket is a frame formed by connecting vertical support feet and horizontal connecting rods.

4. The fixture for flame retardancy testing of a household electric blanket or heating pad according to claim 3, characterized in that: The vertical support feet include two long support feet and two short support feet.

5. The fixing device for flame retardant testing of a household electric blanket or heating pad according to any one of claims 1 to 4, characterized in that: The bottom of the bracket is fixedly connected with a bottom plate.

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