Heating tube thin plate retaining spring

Abstract

The thin plate retaining spring of the electric heating tube is used to install the electric heating tube with steps on the two walls of the electric heater. A mounting hole is set on one side of the two walls to block the step on one side of the electric heating tube, and a through hole is set on the other side. The installation is achieved by blocking the step on the other side of the electric heating tube by the retaining spring. After the retaining spring is installed, it is elastically clamped on the electric heating tube and will not rotate on the electric heating tube by itself. The retaining spring is wide at the top and narrow at the bottom, which can seal the gap generated at the through hole. The retaining spring is elastically inserted downward through the retaining spring opening and will not fall off after installation; the retaining spring is provided with a disassembly groove, and a tool such as a flat-bladed screwdriver can be used to move it upward for disassembly. The lower part of the retaining spring is provided with a retaining spring foot, which can be bent inward for remedy after the retaining spring loses its elasticity due to improper operation, so that the retaining spring will not fall off.

Description

Technical Field

[0001] The invention discloses an electric heating tube thin plate retaining spring, which is a retaining spring used for installing the electric heating tube in electric heating appliances and belongs to the field of electric heating appliances. Background Art

[0002] The two ends of the electric heating tube of a general electric heating appliance are provided with steps. The electric heating tube is installed on the two walls of the electric heater. One side of the two walls is a mounting hole. The diameter of the mounting hole matches the outer diameter of the electric heating tube head. The step of the electric heating tube can be blocked when the electric heating tube is installed. The other side of the two walls is a through hole. The through hole diameter is larger than the step diameter of the electric heating tube. During installation, the electric heating tube passes through the through hole, and then a retaining ring is used to block the step of the electric heating tube to achieve installation. The existing retaining ring is generally bent from spring steel wire. This retaining ring is easy to scale when used in electric heating appliances, is not beautiful, and cannot seal the gap left at the through hole after installation. There is also an existing retaining ring made of spring steel plate (with standard parts). Special tools are required for installation and removal during installation, which is quite troublesome. This retaining ring is too strong and has large elasticity. When used for the electric heating tube, its coordination, installation and functional effects with the electric heating tube are not ideal. Summary of the Invention

[0003] The present invention provides an electric heating tube thin plate clamping spring for installing the electric heating tube. The electric heating tube thin plate clamping spring consists of an inner diameter of the clamping spring, an outer diameter of the clamping spring, a clamping spring head, a disassembly groove, a clamping spring opening, and a clamping spring foot. The outer diameter of the electric heating tube head used is provided with a step. The inner diameter of the electric heating tube thin plate clamping spring is slightly smaller than the outer diameter of the electric heating tube. After installation, it is elastically clamped on the electric heating tube and will not rotate on the electric heating tube; the inner diameter of the clamping spring deviates downward from the outer diameter of the clamping spring, so that the clamping spring forms a shape that is wide at the top and narrow at the bottom, which can seal the gap left at the through hole after installation; the upper part of the electric heating tube thin plate clamping spring is provided with a clamping spring head, a clamping spring head, a clamping spring head, a clamping spring head, a disassembly groove, a clamping spring opening, and a clamping spring foot. A disassembly groove is provided at the bottom of the spring head, and there is space between the disassembly groove and the step of the installed electric heating tube. Ordinary tools, such as a flat-blade screwdriver, can be inserted into the space and the retaining spring can be easily removed by pushing it upwards. The size of the retaining spring opening of the thin plate retaining spring of the electric heating tube is slightly smaller than the outer diameter of the electric heating tube. When installing, press the retaining spring head downward to perform elastic installation, and it will not fall off after installation. A retaining spring foot is provided at the bottom of the thin plate retaining spring of the electric heating tube, which is used for elastic transition during installation and for remedying the elastic failure of the retaining spring after improper disassembly and assembly. The retaining spring foot is bent inward to prevent the thin plate retaining spring of the electric heating tube from falling off.

[0004] The electric heating tube thin plate retaining spring does not require large and strong elasticity and is made of ordinary thin steel plates and stainless steel plates.

[0005] The thin plate retaining spring of the electric heating tube is manufactured by laser technology and its thickness is no more than 0.8 mm.

[0006] The present invention is completed through the following scheme: the electric heating tube thin plate retaining spring of the present invention is composed of a retaining spring 1, a retaining spring inner diameter 2, a retaining spring outer diameter 3, a retaining spring head 4, a disassembly groove 5, a retaining spring opening 6, a retaining spring foot 7, an electric heating tube outer diameter 8, an electric heating tube step 9, a space 10, two walls 11, a mounting hole 12, and a through hole 13. The electric heating tube thin plate retaining spring is used to install the electric heating tube with the step 9 on the two walls 11 of the electric heater. One side of the two walls 11 is set as the mounting hole 12. After installation, the mounting hole 12 blocks the step on one side of the electric heating tube. The other side of the two walls 11 is set as the through hole 13. The installation is achieved by blocking the step 9 on the other side of the electric heating tube by the retaining spring 1. The inner diameter of the retaining spring 1 is smaller than the outer diameter of the electric heating tube. 8, and after installation, it is elastically clamped on the electric heating tube, and the retaining spring 1 will not rotate on the electric heating tube by itself; the inner diameter 2 of the retaining spring deviates downward from the outer diameter 3 of the retaining spring, forming a shape that is wide at the top and narrow at the bottom, sealing the gap generated at the through hole 13; a retaining spring opening 6 is provided at the lower part of the retaining spring 1, and the size of the retaining spring opening 6 is smaller than the outer diameter 8 of the electric heating tube. During installation, the retaining spring 1 is elastically inserted downward and will not fall off after installation; a retaining spring head 4 is provided at the upper part of the retaining spring 1, and a disassembly groove 5 is provided at the lower part of the retaining spring head 4. After installation, the disassembly groove 5 leaves a space 10 on the upper part of the electric heating tube step 9, which can be inserted with a tool such as a flat-bladed screwdriver, and the retaining spring 1 can be removed by pushing it upward; a retaining spring foot 7 is provided at the lower part of the retaining spring 1, and the retaining spring foot 7 can be bent inward.

[0007] The retaining spring 1 of the electric heating tube thin plate retaining spring is manufactured by laser cutting from ordinary thin steel plates or stainless steel plates.

[0008] The thickness of the electric heating tube thin plate retaining spring 1 is less than 0.8 mm.

[0009] The following is a description with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a front view of the electric heating tube thin plate retaining spring of the present invention.

[0011] Figure 2 This is a front cross-sectional view of the electric heating tube thin plate retaining spring after installation.

[0012] Figure 3 This is a side view of the thin plate retaining spring for electric heating pipes installed with the heating pipe. In the figure: 1, retaining spring, 2, retaining spring inner diameter, 3, retaining spring outer diameter, 4, retaining spring head, 5, removal slot, 6, retaining spring opening, 7, retaining spring foot, 8, outer diameter of the heating pipe, 9, step on the heating pipe, 10, space, 11, two walls, 12, mounting hole, 13, through hole. DETAILED DESCRIPTION

[0013] The electric heating tube thin plate retaining spring of the present invention is composed of a retaining spring 1, a retaining spring inner diameter 2, a retaining spring outer diameter 3, a retaining spring head 4, a disassembly groove 5, a retaining spring opening 6, a retaining spring foot 7, an electric heating tube outer diameter 8, an electric heating tube step 9, a space 10, two walls 11, a mounting hole 12, and a through hole 13. The electric heating tube thin plate retaining spring is used to install the electric heating tube with the step 9 on the two walls 11 of the electric heater. One side of the two walls 11 is set as the mounting hole 12. When installing, the mounting hole 12 blocks the step on one side of the electric heating tube. The other side of the two walls 11 is set as the through hole 13. The electric heating tube passes through the through hole 13 and then blocks the step 9 on the other side of the electric heating tube to achieve installation; the inner diameter of the retaining spring 1 is smaller than the outer diameter 8 of the electric heating tube. After installation, it is elastically clamped on the electric heating tube, and the retaining spring 1 will not rotate on the electric heating tube by itself; the inner diameter 2 of the retaining spring deviates downward from the outer diameter 3 of the retaining spring to form an upper width The narrow shape at the bottom can seal the gap left at the through hole 13 after the electric heating tube is installed; a retaining spring opening 6 is provided at the lower part of the retaining spring 1, and the size of the retaining spring opening 6 is smaller than the outer diameter 8 of the electric heating tube. When installing, the retaining spring head 4 is pressed downward so that the retaining spring 1 is elastically inserted downward into the electric heating tube and will not fall off after installation; a retaining spring head 4 is provided at the upper part of the retaining spring 1, and a disassembly groove 5 is provided at the lower part of the retaining spring head 4. The retaining spring head 4 and the disassembly groove 5 can increase the elastic force arm of the retaining spring 1. After installation, the disassembly groove 5 leaves a space 10 on the upper part of the electric heating tube step 9, which can be inserted with a tool such as a flat-bladed screwdriver, and the retaining spring 1 can be removed by pushing it upward; a retaining spring foot 7 is provided at the lower part of the retaining spring 1 for elastic transition during installation. The retaining spring foot 7 can be bent inward to remedy the elastic failure of the retaining spring due to improper disassembly and assembly. The retaining spring foot is bent inward to prevent the thin plate retaining spring of the electric heating tube from falling off.

[0014] Since greater strength and greater elasticity are not required, the retaining spring 1 of the electric heating tube thin plate retaining spring of the present invention is made of ordinary thin steel plates or stainless steel thin plates. The retaining spring 1 is manufactured by laser cutting and has a thickness of less than 0.8 mm.

Claims

1. A thin plate retaining spring for an electric heating tube comprises a retaining spring (1), a retaining spring inner diameter (2), a retaining spring outer diameter (3), a retaining spring head (4), a disassembly groove (5), a retaining spring opening (6), a retaining spring foot (7), an electric heating tube outer diameter (8), an electric heating tube step (9), a space (10), two walls (11), a mounting hole (12), and a through hole (13). The thin plate retaining spring for an electric heating tube is used to install an electric heating tube with a step (9) on the two walls (11) of an electric heater. One side of the two walls (11) is set as the mounting hole (12). After installation, the mounting hole (12) blocks the step on one side of the electric heating tube. The other side of the two walls (11) is set as the through hole (13). Installation is achieved by blocking the step (9) on the other side of the electric heating tube by the retaining spring (1). The invention is characterized in that The inner diameter of the retaining spring (1) is smaller than the outer diameter (8) of the electric heating tube. After installation, the retaining spring (1) is elastically clamped on the electric heating tube, and the retaining spring (1) will not rotate on the electric heating tube by itself; the inner diameter (2) of the retaining spring deviates downward from the outer diameter (3) of the retaining spring, forming a shape that is wide at the top and narrow at the bottom, thereby sealing the gap generated at the through hole (13); a retaining spring opening (6) is provided at the bottom of the retaining spring (1), and the size of the retaining spring opening (6) is smaller than the outer diameter (8) of the electric heating tube. During installation, the retaining spring (1) is elastically inserted downward and will not fall off after installation; a retaining spring head (4) is provided at the top of the retaining spring (1), and a disassembly groove (5) is provided at the bottom of the retaining spring head (4). After installation, a space (10) is left at the top of the step (9) of the electric heating tube for inserting a tool such as a flat screwdriver. The retaining spring (1) can be removed by pushing it upward; a retaining spring foot (7) is provided at the bottom of the retaining spring (1), and the retaining spring foot (7) can be bent inward. The retaining ring (1) is manufactured by laser cutting of ordinary thin steel plate or stainless steel thin plate. The thickness of the retaining ring (1) is less than 0.8 mm.

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