Adjustable spring type resistance wire

Abstract

The utility model discloses an adjustable spring type resistance wire which comprises a ceramic tube, a resistance wire body and a connecting plate, the resistance wire body is wound on the outer surface of the ceramic tube, the two ends of the resistance wire body are electrically connected with connectors, sliding grooves are formed in the two sides of the connecting plate, sliding plates are connected in the sliding grooves in a sliding mode, and the sliding plates are connected with the ceramic tube. A sliding sleeve is fixedly connected between the two sliding plates and arranged on the outer side of the resistance wire body in a sleeving mode, a base is fixedly connected to the top of the sliding sleeve, a threaded conducting rod is inserted into the base in a threaded mode, the bottom end of the threaded conducting rod makes contact with the resistance wire body, shunting heads are fixedly connected to the two ends of the threaded conducting rod, and pressing rings are fixedly connected to the other ends of the shunting heads. The sliding sleeve is pulled to enable the sliding plate to move in the sliding groove, so that the threaded conducting rod moves along the resistance wire body, the length of the resistance wire body is adjusted, the resistance of the resistance wire body is adjusted, and operation is simple, convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model relates to resistance wire technical field especially, relates to a kind of adjustable spring resistance wire. BACKGROUND

[0002] Resistance wire is a kind of electrical element generally converting electrical energy into internal energy, at present, existing spring resistance wire, in the use process, the size of resistance cannot be adjusted, only resistance can be adjusted by replacing resistance wire with different number of turns, not only will affect the practicality of spring resistance wire, will also increase the cost of processing. INNOVATION CONTENT

[0003] The utility model aims at solving the size of resistance cannot be adjusted in the use process of existing spring resistance wire, only resistance can be adjusted by replacing resistance wire with different number of turns, not only will affect the practicality of spring resistance wire, will also increase the cost of processing problem, and presents a kind of adjustable spring resistance wire.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A kind of adjustable spring resistance wire, including ceramic tube, resistance wire body and connecting plate, resistance wire body is wound on the outer surface of ceramic tube, both ends of the resistance wire body are electrically connected with connecting head, both sides of connecting plate are equipped with sliding slot, slidingly connected with sliding plate in sliding slot, two sliding plates are fixedly connected with sliding sleeve, sliding sleeve is sleeved on the outside of resistance wire body, the top of sliding sleeve is fixedly connected with base, threaded conductive rod is inserted in base with screw thread, the bottom end of threaded conductive rod is in contact with resistance wire body, both ends of threaded conductive rod are fixedly connected with shunt head, the other end of shunt head is fixedly connected with compression ring, the side of compression ring is fixedly connected with threaded rod, the other end of threaded rod is threadedly sleeved with compression knob, nut is clamped in compression knob, nut is threadedly sleeved on threaded rod, the top end of threaded conductive rod is threadedly sleeved with insulating knob.

[0006] Further, the outer wall of the compression knob is provided with an anti-skid groove.

[0007] Further, the outer wall of the threaded conductive rod and the shunt head is sleeved with an insulating sleeve, and the compression ring is located in the insulating sleeve.

[0008] Further, both ends of the bottom of the ceramic tube are inserted with connecting bolts, the bottom end of the connecting bolt is sleeved with a supporting leg, and the connecting plate is fixed between the two supporting legs.

[0009] The utility model has the advantages that:

[0010] 1. By pulling the sliding sleeve, the sliding plate moves in the sliding groove, so that the threaded conductive rod moves along the resistance wire body, thereby adjusting the length of the resistance wire body, thus adjusting the resistance of the resistance wire body, and the operation is simple, convenient and fast.

[0011] 2. The setting of the insulating sleeve and the insulating knob can insulate the threaded conductive rod and the shunt head, thereby avoiding the situation of electric leakage. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 A three-dimensional structure schematic diagram of the adjustable spring type resistance wire is provided for the utility model;

[0013] Figure 2 A bottom view structure schematic diagram of the adjustable spring type resistance wire is provided for the utility model;

[0014] Figure 3 A partial enlarged structure schematic diagram of the adjustable spring type resistance wire is provided for the utility model;

[0015] Figure 4 A partial sectional structure schematic diagram of the adjustable spring type resistance wire is provided for the utility model.

[0016] In the figure: 1, ceramic tube; 2, resistance wire body; 3, connecting head; 4, connecting plate; 5, sliding groove; 6, sliding sleeve; 7, sliding plate; 8, base; 9, threaded conductive rod; 10, shunt head; 11, compression ring; 12, threaded rod; 13, compression knob; 14, nut; 15, insulating knob; 16, insulating sleeve; 17, connecting bolt; 18, supporting leg. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0018] REFERENCE Figures 1-4The adjustable spring resistance wire comprises a ceramic tube 1, a resistance wire body 2 and a connecting plate 4, the resistance wire body 2 is wound on the outer surface of the ceramic tube 1, both ends of the resistance wire body 2 are electrically connected with connecting heads 3, both sides of the connecting plate 4 are provided with sliding grooves 5, sliding plates 7 are slidably connected in the sliding grooves 5, sliding sleeves 6 are integrally formed between the two sliding plates 7, the sliding sleeves 6 are sleeved on the outer side of the resistance wire body 2, bases 8 are integrally formed on the top of the sliding sleeves 6, threaded conductive rods 9 are screwedly inserted into the bases 8, the bottom ends of the threaded conductive rods 9 are in contact with the resistance wire body 2, the sliding sleeves 6 are pulled to move the sliding plates 7 in the sliding grooves 5, so that the threaded conductive rods 9 move along the resistance wire body 2, and then the length of the resistance wire body 2 is adjusted, so that the resistance of the resistance wire body 2 is adjusted.

[0019] Both ends of the threaded conductive rod 9 are integrally formed with shunt heads 10, the other end of the shunt head 10 is integrally formed with a compression ring 11, one side of the compression ring 11 is integrally formed with a threaded rod 12, the other end of the threaded rod 12 is threadedly sleeved with a compression knob 13, the outer wall of the compression knob 13 is provided with an anti-skid groove, so that the operation of the compression knob 13 is facilitated, a nut 14 is clamped in the compression knob 13, the nut 14 is threadedly sleeved on the threaded rod 12, the wires of external devices are placed between the compression ring 11 and the compression knob 13, and then the compression knob 13 is tightened, so that the wires of the external devices are pressed on the compression ring 11, and the top end of the threaded conductive rod 9 is threadedly sleeved with an insulating knob 15, so that the threaded conductive rod 9 is prevented from electric leakage.

[0020] The outer walls of the threaded conductive rod 9 and the shunt head 10 are sleeved with an insulating sleeve 16, the compression ring 11 is located in the insulating sleeve 16, so that the threaded conductive rod 9 and the shunt head 10 are insulated, the both ends of the bottom of the ceramic tube 1 are inserted with connecting bolts 17, the bottom ends of the connecting bolts 17 are sleeved with supporting legs 18, so that the ceramic tube 1 and the resistance wire body 2 are supported, and the connecting plate 4 is fixed between the two supporting legs 18.

[0021] The working principle of the embodiment is as follows: in use, first, one of the connecting heads 3 is connected with external devices, the wires of the external devices are placed between the compression ring 11 and the compression knob 13, and then the compression knob 13 is tightened, so that the wires of the external devices are pressed on the compression ring 11, a passage is formed between the connecting head 3, the threaded conductive rod 9 and the shunt head 10, then the sliding sleeve 6 is pulled to move the sliding plate 7 in the sliding groove 5, so that the threaded conductive rod 9 moves along the resistance wire body 2, and then the length of the resistance wire body 2 is adjusted, so that the resistance of the resistance wire body 2 is adjusted.

[0022] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An adjustable spring resistance wire comprising a ceramic tube (1), a resistance wire body (2) and a connecting plate (4), the resistance wire body (2) being wound around the outer surface of the ceramic tube (1), characterized in that, Both ends of the resistance wire body (2) are electrically connected with connecting heads (3), both sides of the connecting plate (4) are provided with sliding grooves (5), the sliding grooves (5) are slidably connected with sliding plates (7), the two sliding plates (7) are fixedly connected with a sliding sleeve (6), the sliding sleeve (6) is sleeved on the outside of the resistance wire body (2), the top of the sliding sleeve (6) is fixedly connected with a base (8), the base (8) is threadedly connected with a threaded conductive rod (9), the bottom end of the threaded conductive rod (9) is in contact with the resistance wire body (2), both ends of the threaded conductive rod (9) are fixedly connected with shunt heads (10), the other end of the shunt head (10) is fixedly connected with a compression ring (11), one side of the compression ring (11) is fixedly connected with a threaded rod (12), the other end of the threaded rod (12) is threadedly sleeved with a compression knob (13), the compression knob (13) is clamped with a nut (14), the nut (14) is threadedly connected on the threaded rod (12), and the top end of the threaded conductive rod (9) is threadedly sleeved with an insulating knob (15).

2. An adjustable spring resistance wire according to claim 1, wherein The outer wall of the compression knob (13) is provided with an anti-skid groove.

3. The adjustable spring resistance wire of claim 1, wherein, The outer wall of the threaded conductive rod (9) and the shunt head (10) is sleeved with an insulating sleeve (16), and the compression ring (11) is located in the insulating sleeve (16).

4. The adjustable springed resistance wire of claim 1, wherein, Both ends of the bottom of the ceramic pipe (1) are inserted with connecting bolts (17), the bottom end of the connecting bolt (17) is sleeved with a supporting leg (18), and the connecting plate (4) is fixed between the two supporting legs (18).

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