Nickel-chromium alloy wire for electric heating

Abstract

The utility model belongs to the technical field of nichrome wires, and particularly relates to a nichrome wire for electric heating, which comprises a spirally wound nichrome wire body and a heating pipe sleeved on the nichrome wire body, a stretching mechanism penetrating through the heating pipe is arranged in the nichrome wire body along the axial direction, and the nichrome wire body is connected with the heating pipe. The nickel-chromium alloy wire comprises a nickel-chromium alloy wire body and a plurality of stretching mechanisms connected in series, each stretching mechanism comprises a plurality of connecting seats and a connecting assembly used for connecting the connecting seats in series, the connecting seats are sequentially arranged at different positions of the nickel-chromium alloy wire body in the axial direction, and a spiral groove is spirally wound around the periphery of each connecting seat. In the process that the nichrome wire body penetrates through the heating pipe, the nichrome wire body is stressed through a plurality of connecting bases and connecting assemblies in the stretching mechanism, the nichrome wire body can be prevented from being stressed in the stretching process, and uniform heating through the heating pipe is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of nickel-chromium alloy wires, and in particular relates to a nickel-chromium alloy wire for electric heating. Background Art

[0002] Nickel-chromium alloy wire can be used for car seat heating, bedding electric blankets, medical equipment, physical therapy equipment, etc.

[0003] Nickel-chromium alloy wire is often used in high-temperature environments. In order to increase its durability and stability, it is usually wrapped or woven with stainless steel. When wrapped with stainless steel, a stainless steel tube structure is generally used to pass the threaded nickel-chromium alloy wire from one end of the stainless steel tube to the other. Since the nickel-chromium alloy wire with a threaded structure has some elasticity, in the process of the nickel-chromium alloy wire passing through the stainless steel tube, the elasticity of some sections of the nickel-chromium alloy wire will be lost, resulting in some sections of the nickel-chromium alloy wire being fitted together and other sections being stretched apart, which in turn causes some sections of the stainless steel tube to have excessively high temperatures and some sections to have lower temperatures, causing the stainless steel tube to be heated unevenly during heating, thereby affecting the electric heating effect of the equipment. Utility Model Content

[0004] The purpose of the present invention is to provide a nickel-chromium alloy wire for electric heating, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a nickel-chromium alloy wire for electric heating, comprising: a spirally wound nickel-chromium alloy wire body and a heating tube sleeved on the nickel-chromium alloy wire body, a stretching mechanism penetrating the heating tube in the axial direction of the nickel-chromium alloy wire body, the stretching mechanism comprising a plurality of connecting seats and a connecting assembly for connecting the plurality of connecting seats in series, the plurality of connecting seats being sequentially arranged at different axial positions of the nickel-chromium alloy wire body.

[0006] Preferably, a spiral groove is spirally wound on the outer circumference of each connecting seat, and a partial section of the nickel-chromium alloy wire body is sleeved in the corresponding spiral groove.

[0007] Preferably, the connecting mechanism includes a connecting rope and connecting pieces installed at both ends of the connecting rope, and rope buckle seats are provided at both ends of each connecting seat, and one end of the two connecting pieces can be detachably installed on the corresponding rope buckle seats.

[0008] Preferably, the connecting member includes a connecting buckle with a notch on the side, a shift lever is provided on the inner side of the connecting buckle for sealing the notch, and the connecting buckle is hung on the corresponding rope buckle seat.

[0009] Preferably, a rotating shaft for rotation is provided between one end of the gear lever and one end of the connecting buckle, a slot is provided on the inner side of the other end of the gear lever, and the end of the connecting buckle facing away from the rotating shaft abuts against the slot, a groove is provided in the slot, and a magnet adsorbed on the connecting buckle is provided in the groove.

[0010] Preferably, each of the connecting seats is axially penetrated with a plurality of heat dissipation holes for heat dissipation.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) The utility model adds a plurality of stretching mechanisms in series. When the nickel-chromium alloy wire body passes through the heating tube, the wire body is stressed by the plurality of connecting seats and connecting components in the stretching mechanism. This can avoid the nickel-chromium alloy wire body being stressed during the stretching process and facilitate uniform heating through the heating tube.

[0013] (2) The present invention adds a spiral groove, which makes it easier for the nickel-chromium alloy wire body to be wound around the connecting seat, thereby preventing the nickel-chromium alloy wire body from being separated from the connecting seat and improving the stability of the connection between the nickel-chromium alloy wire body and the connecting seat.

[0014] (3) The utility model adds a connecting rope, a connecting piece and a rope buckle seat, so that the stretching mechanism can be assembled on site according to the length of the heating tube, so that the equipment can be applied to heating tubes of different lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a front view of the connecting buckle, gear lever and connecting rope of the utility model;

[0017] Figure 3 This is a cross-sectional view of the connecting buckle, gear lever and connecting rope of the utility model;

[0018] Figure 4 This is a front view of the connecting seat of the utility model;

[0019] Figure 5 This is a front view of the connecting seat and the heat dissipation hole of the utility model;

[0020] In the figure: 1. Heating tube; 2. Nichrome wire body; 3. Connecting rope; 4. Rope buckle seat; 5. Connecting piece; 6. Heat dissipation hole; 7. Spiral groove; 8. Connecting seat; 9. Connecting buckle; 10. Notch; 11. Gear lever; 12. Rotating shaft; 13. Slot; 14. Magnet; 15. Groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] refer to Figure 1 As shown, the present invention provides a nickel-chromium alloy wire for electric heating, comprising: a spirally wound nickel-chromium alloy wire body 2 and a heating tube 1 sleeved on the nickel-chromium alloy wire body 2, a stretching mechanism penetrating the heating tube 1 is provided in the nickel-chromium alloy wire body 2 along the axial direction, the stretching mechanism comprises a plurality of connecting seats 8 and a connecting assembly for connecting the plurality of connecting seats 8 in series, and the plurality of connecting seats 8 are sequentially arranged at different axial positions of the nickel-chromium alloy wire body 2.

[0023] As described above, when using the nickel-chromium alloy wire body 2, heating tube 1 and stretching mechanism provided by the present invention, the multiple connecting seats 8 in the stretching mechanism are respectively installed on different sections of the nickel-chromium alloy wire body 2, and the multiple connecting seats 8 are connected in series through multiple connecting components. One of the connecting components is passed through the heating tube 1, and the connecting component is pulled at the other end of the heating tube 1, so that the multiple connecting seats 8 are pulled into the heating tube 1 in sequence. At this time, the nickel-chromium alloy wire body 2 enters the heating tube 1 along with the multiple connecting seats 8. During this process, the nickel-chromium alloy wire body 2 is not subjected to force.

[0024] Further, in order to facilitate the installation of the nickel-chromium alloy wire body 2 on the connecting seat 8, refer to Figure 4 As shown, each connecting seat 8 is spirally formed with a spiral groove 7 on its outer circumference, and a portion of the nickel-chromium alloy wire body 2 is sleeved in the corresponding spiral groove 7. The spiral groove 7 facilitates the nickel-chromium alloy wire body 2 to be spirally wound around the connecting seat 8, preventing the connecting seat 8 from being separated from the nickel-chromium alloy wire body 2.

[0025] Furthermore, in order to avoid excessive heat between the two connecting seats 8 in the heating tube 1, refer to Figure 5 As shown, each connection base 8 is axially penetrated with a plurality of heat dissipation holes 6 for heat dissipation. The heat dissipation holes 6 facilitate the circulation of heat in the heating tube 1 to avoid excessively high local temperature of the heating tube 1.

[0026] In this utility model, combined with Figure 2-3 As shown, the connection mechanism of this embodiment includes a connecting rope 3 and connecting parts 5 installed at both ends of the connecting rope 3. Both ends of each connecting seat 8 are provided with a rope buckle seat 4, and one end of the two connecting parts 5 can be detachably installed on the corresponding rope buckle seat 4.

[0027] Combine Figure 2-3As shown, the connecting member 5 includes a connecting buckle 9 with a notch 10 on the side, and a shift rod 11 is provided on the inner side of the connecting buckle 9 to block the notch 10. The connecting buckle 9 is hung on the corresponding rope buckle seat 4.

[0028] As described above, when using the connecting mechanism provided by the present invention, the connecting rope 3 is hung on the rope buckle seats 4 on the upper covers of two adjacent connecting seats 8 through the connecting buckles 9 at both ends, thereby completing the connection between the two adjacent connecting seats 8. When one of the connecting ropes 3 is pulled, multiple connecting seats 8 can be driven to move their positions in sequence in the heating tube 1.

[0029] Further, in order to prevent the lever 11 from being separated from the notch 10, refer to Figure 2-3 As shown, a rotating shaft 12 is provided between one end of the shift lever 11 and one end of the connecting buckle 9 for rotation. A slot 13 is provided on the inner side of the other end of the shift lever 11. The end of the connecting buckle 9 facing away from the rotating shaft 12 abuts against the slot 13. The slot 13 has a groove 15 provided therein. A magnet 14 is provided in the groove 15, which is attracted to the connecting buckle 9. When the connecting buckle 9 is hung on the cord buckle seat 4, the shift lever 11 is allowed to pass through the rotating shaft 12 and approach the end of the connecting buckle 9. At this time, the magnet 14 in the slot 13 attracts the shift lever 11 to the connecting buckle 9, preventing the shift lever 11 from automatically disengaging from the notch 10, thereby preventing the connecting buckle 9 from disengaging from the cord buckle seat 4.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nickel-chromium alloy wire for electric heating, characterized in that: include: A nickel-chromium alloy wire body (2) wound in a spiral and a heating tube (1) sleeved on the nickel-chromium alloy wire body (2), wherein a stretching mechanism penetrating the heating tube (1) is provided in the nickel-chromium alloy wire body (2) along the axial direction, and the stretching mechanism comprises a plurality of connecting seats (8) and a connecting assembly for connecting the plurality of connecting seats (8) in series, wherein the plurality of connecting seats (8) are sequentially arranged at different axial positions of the nickel-chromium alloy wire body (2).

2. The nickel-chromium alloy wire for electric heating according to claim 1, characterized in that: A spiral groove (7) is spirally wound on the outer circumference of each connecting seat (8), and a partial section of the nickel-chromium alloy wire body (2) is sleeved in the corresponding spiral groove (7).

3. The nickel-chromium alloy wire for electric heating according to claim 1, characterized in that: The connecting assembly comprises a connecting rope (3) and connecting pieces (5) mounted at both ends of the connecting rope (3); both ends of each connecting seat (8) are provided with a rope buckle seat (4); and one end of each of the two connecting pieces (5) is detachably mounted on the corresponding rope buckle seat (4).

4. The nickel-chromium alloy wire for electric heating according to claim 3, characterized in that: The connecting member (5) comprises a connecting buckle (9) with a notch (10) on the side surface, a shift lever (11) is provided on the inner side of the connecting buckle (9) for blocking the notch (10), and the connecting buckle (9) is hung on the corresponding rope buckle seat (4).

5. The nickel-chromium alloy wire for electric heating according to claim 4, characterized in that: A rotating shaft (12) for rotation is further provided between one end of the shift lever (11) and one end of the connecting buckle (9); a slot (13) is provided on the inner side of the other end of the shift lever (11); an end of the connecting buckle (9) facing away from the rotating shaft (12) abuts against the slot (13); a groove (15) is provided in the slot (13); a magnet (14) adsorbed on the connecting buckle (9) is provided in the groove (15).

6. The nickel-chromium alloy wire for electric heating according to claim 1, characterized in that: Each of the connecting seats (8) is axially penetrated by a plurality of heat dissipation holes (6) for dissipating heat.

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