Range-adjustable rheostat

Abstract

The utility model discloses a range-adjustable rheostat, and relates to the technical field of range-adjustable rheostats. The range-adjustable rheostat comprises a porcelain tube, an aluminum shell is arranged on the outer surface of the porcelain tube, and an adjusting mechanism is arranged at the top of the porcelain tube. According to the range-adjustable rheostat, by arranging the insulating screw rod, when the range of the rheostat needs to be adjusted, firstly, the sliding contact is arranged on the side face of the contact on the porcelain tube, the insulating sleeve II is arranged on the outer surface of the sliding contact, and the insulating screw rod can be driven to rotate by rotating the knob; when the insulation lead screw rotates, the threaded sleeve in threaded sleeving connection with the outer surface of the insulation lead screw is driven to slide in the limiting groove, when the threaded sleeve slides, the second insulation sleeve and the sliding contact are driven to slide at the same time, the sliding contact slides on the outer surface of the contact, the range of the rheostat can be adjusted, and the device is convenient to adjust the range of the rheostat.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of adjustable range rheostat, specifically relates to a kind of adjustable range rheostat. BACKGROUND

[0002] Porcelain tube rheostat is a variable resistor, it is mainly composed of porcelain tube, resistance wire and sliding contact. Porcelain tube is its framework, provides mechanical support for the whole rheostat and has good insulation performance, can prevent current leakage.

[0003] The above-mentioned device does not have the structure of accurately adjusting the range of the rheostat when in use, so that the existing porcelain tube rheostat is mostly directly sleeved on the porcelain tube for use when in use. When adjusting the sliding contact, it is more cumbersome to manually adjust after power off. Based on the existing technical deficiencies, the utility model designs an adjustable range rheostat. UTILITY MODEL CONTENT

[0004] To solve the above problems existing in the prior art, the utility model provides an adjustable range rheostat, which has the characteristics of accurately adjusting the range of the rheostat.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an adjustable range rheostat, comprising a porcelain tube, an aluminum shell is arranged on the outer surface of the porcelain tube, and an adjusting mechanism is arranged on the top of the porcelain tube.

[0006] The adjusting mechanism comprises an insulating lead screw, a knob, a sliding contact, an insulating sleeve two and a threaded sleeve, the insulating lead screw is arranged on the top of the aluminum shell, one side of the insulating lead screw is fixedly connected with the knob, the sliding contact is arranged on the outer surface of the porcelain tube, the outer surface of the sliding contact is provided with the insulating sleeve two, and one side of the insulating sleeve two is fixedly connected with the threaded sleeve.

[0007] As an adjustable range rheostat of the utility model, one side of the porcelain tube is provided with a connecting shaft, one side of the porcelain tube is provided with a contact, one side of the porcelain tube is provided with a terminal post, and the outer surface of the terminal post is provided with an insulating sleeve one.

[0008] As an adjustable range rheostat of the utility model, one side of the aluminum shell is fixedly connected with a supporting leg, an inner cavity is formed in the inside of the aluminum shell, and a connecting groove is formed in one side of the aluminum shell.

[0009] As an adjustable range rheostat of the utility model, the top of the aluminum shell is fixedly connected with a connecting strip, one side of the connecting strip is fixedly connected with a connecting block, a sliding groove is formed in the top of the connecting strip, and a limiting groove is formed in one side of the sliding groove.

[0010] The utility model discloses a variable resistor of adjustable range, which comprises an aluminum shell, a connecting shaft, a connecting block, a connecting strip, a porcelain tube, a sliding contact, an insulating sleeve, a limiting groove, a threaded sleeve and an insulating sleeve two.

[0011] The utility model discloses a variable resistor of adjustable range, which comprises an aluminum shell, a connecting shaft, a connecting block, a connecting strip, a porcelain tube, a sliding contact, an insulating sleeve, a limiting groove, a threaded sleeve and an insulating sleeve two.

[0012] The utility model discloses a variable resistor of adjustable range, which comprises an aluminum shell, a connecting shaft, a connecting block, a connecting strip, a porcelain tube, a sliding contact, an insulating sleeve, a limiting groove, a threaded sleeve and an insulating sleeve two.

[0013] The utility model discloses a variable resistor of adjustable range, which comprises an aluminum shell, a connecting shaft, a connecting block, a connecting strip, a porcelain tube, a sliding contact, an insulating sleeve, a limiting groove, a threaded sleeve and an insulating sleeve two.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1、The utility model discloses a variable resistor of adjustable range, which comprises an aluminum shell, a connecting shaft, a connecting block, a connecting strip, a porcelain tube, a sliding contact, an insulating sleeve, a limiting groove, a threaded sleeve and an insulating sleeve two. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0017] Figure 1 It is aluminum shell structure schematic diagram of the utility model;

[0018] Figure 2 It is connecting shaft structure schematic diagram of the utility model;

[0019] Figure 3 It is porcelain tube structure schematic diagram of the utility model;

[0020] Figure 4 It is connecting strip structure schematic diagram of the utility model;

[0021] Figure 5 It is adjusting mechanism structure schematic diagram of the utility model.

[0022] In the figure: 1, porcelain tube; 101, connecting shaft; 102, contact; 103, terminal post; 104, insulating sleeve I; 2, aluminum shell; 201, supporting leg; 202, inner cavity; 203, connecting groove; 204, connecting strip; 205, connecting block; 206, sliding groove; 207, limiting groove; 3, adjusting mechanism; 301, insulating screw rod; 302, knob; 303, sliding contact; 304, insulating sleeve II; 305, threaded sleeve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Embodiment 1

[0025] Please refer to Figures 1-5 The present application provides the following technical solutions: a variable-range variable resistor, comprising a porcelain tube 1, an aluminum shell 2 is arranged on the outer surface of the porcelain tube 1, and an adjusting mechanism 3 is arranged on the top of the porcelain tube 1.

[0026] One side of the porcelain tube 1 is provided with a connecting shaft 101, one side of the porcelain tube 1 is provided with a contact 102, one side of the porcelain tube 1 is provided with a terminal post 103, and the outer surface of the terminal post 103 is provided with an insulating sleeve I 104.

[0027] One side of the aluminum shell 2 is fixedly connected with a supporting leg 201, an inner cavity 202 is formed in the aluminum shell 2, and a connecting groove 203 is formed in one side of the aluminum shell 2.

[0028] The top of the aluminum shell 2 is fixedly connected with a connecting strip 204, one side of the connecting strip 204 is fixedly connected with a connecting block 205, a sliding groove 206 is formed in the top of the connecting strip 204, and a limiting groove 207 is formed in one side of the sliding groove 206.

[0029] It needs to be further explained and described that: the terminal posts 103 are arranged on both sides of the porcelain tube 1, the outer surfaces of the terminal posts 103 are provided with the insulating sleeves I 104, the insulating sleeves I 104 can be cut according to requirements, the aluminum shell 2 is arranged on the outer surface of the porcelain tube 1 to protect the porcelain tube 1, the terminal posts 103 and the insulating sleeves I 104 are arranged to extend out of the inner part of the connecting groove 203, the sliding contact 303 arranged on the outer surface of the porcelain tube 1 extends out of the top of the connecting strip 204 arranged on the top of the aluminum shell 2, which is convenient for connecting the electric wire, and the adjusting mechanism 3 is arranged on the top of the porcelain tube 1, which is convenient for adjusting the variable resistor by arranging the adjusting mechanism 3.

[0030] Embodiment 2

[0031] Please refer to Figures 4-5 The utility model provides the following technical scheme:

[0032] Adjusting mechanism 3, adjusting mechanism 3 includes insulated screw rod 301, knob 302, sliding contact 303, insulating sleeve no. 2 304 and threaded sleeve 305, insulated screw rod 301 sets up at the top of aluminium shell 2, and one side of insulated screw rod 301 is fixedly connected with knob 302, and sliding contact 303 sets up at the outer surface of porcelain tube 1, and the outer surface of sliding contact 303 is provided with insulating sleeve no. 2 304, and one side of insulating sleeve no. 2 304 is fixedly connected with threaded sleeve 305.

[0033] Insulated screw rod 301 is rotatably connected in the inside of connecting strip 204, and knob 302 is rotatably connected in the inside of connecting block 205.

[0034] Sliding contact 303 is slidably connected in the inside of connecting strip 204, and sliding contact 303 is slidably sleeved on one side of contact 102.

[0035] Insulating sleeve no. 2 304 is slidably connected in the inside of sliding groove 206, and threaded sleeve 305 is slidably connected in the inside of limiting groove 207.

[0036] Threaded sleeve 305 is threadedly sleeved on the outer surface of insulated screw rod 301, and threaded sleeve 305 is arranged on one side of sliding contact 303.

[0037] It needs to be further explained that: sliding contact 303 is arranged on the side of contact 102 on porcelain tube 1, and the outer surface of sliding contact 303 is provided with insulating sleeve no. 2 304, by rotating knob 302, insulated screw rod 301 can be rotated, when insulated screw rod 301 rotates, threaded sleeve 305 that is threadedly sleeved on the outer surface of insulated screw rod 301 slides in the inside of limiting groove 207, and when threaded sleeve 305 slides, insulating sleeve no. 2 304 and sliding contact 303 slide simultaneously, and sliding contact 303 slides on the outer surface of contact 102, so that the range of resistor can be adjusted.

[0038] Working principle: when a kind of adjustable range resistor is used, first, terminal post 103 is arranged on the both sides of porcelain tube 1, and the outer surface of terminal post 103 is provided with insulating sleeve no. 1 104, and insulating sleeve no. 1 104 can be cut according to demand, aluminium shell 2 is arranged on the outer surface of porcelain tube 1, and porcelain tube 1 is protected by aluminium shell 2, terminal post 103 and insulating sleeve no. 1 104 extend from the inside of connecting groove 203, and sliding contact 303 arranged on the outer surface of porcelain tube 1 extends from the top of connecting strip 204 arranged on the top of aluminium shell 2, so as to facilitate the connection of electric wire, adjusting mechanism 3 is arranged on the top of porcelain tube 1, and adjusting mechanism 3 is arranged to facilitate the adjustment of the resistor;

[0039] When the range of the rheostat needs to be adjusted, first, the sliding contact 303 is arranged on the side of the contact 102 on the porcelain tube 1, and the outer surface of the sliding contact 303 is provided with the insulating sleeve two 304, the insulating lead screw 301 can be rotated by rotating the rotating knob 302, when the insulating lead screw 301 rotates, the threaded sleeve 305 which is sleeved on the outer surface of the insulating lead screw 301 in the limiting groove 207 slides, when the threaded sleeve 305 slides, the insulating sleeve two 304 and the sliding contact 303 slide simultaneously, the sliding contact 303 slides on the outer surface of the contact 102, and the range of the rheostat can be adjusted, and the device is convenient for adjusting the range of the rheostat.

[0040] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A rheostat of adjustable range comprising a porcelain tube (1), characterized in that: The outer surface of the porcelain tube (1) is provided with an aluminum shell (2), and the top of the porcelain tube (1) is provided with an adjusting mechanism (3); The adjusting mechanism (3) comprises an insulated lead screw (301), a rotating knob (302), a sliding contact (303), an insulating sleeve two (304) and a threaded sleeve (305), the insulated lead screw (301) is arranged at the top of the aluminum shell (2), one side of the insulated lead screw (301) is fixedly connected with the rotating knob (302), the sliding contact (303) is arranged on the outer surface of the porcelain tube (1), the outer surface of the sliding contact (303) is provided with the insulating sleeve two (304), one side of the insulating sleeve two (304) is fixedly connected with the threaded sleeve (305).

2. A variable range rheostat according to claim 1, wherein: One side of the porcelain tube (1) is provided with a connecting shaft (101), one side of the porcelain tube (1) is provided with a contact (102), and one side of the porcelain tube (1) is provided with a terminal post (103), and the outer surface of the terminal post (103) is provided with an insulating sleeve one (104).

3. A variable resistance device according to claim 1, wherein: One side of the aluminum shell (2) is fixedly connected with a supporting leg (201), the inside of the aluminum shell (2) is provided with an inner cavity (202), and one side of the aluminum shell (2) is provided with a connecting groove (203).

4. A variable resistance device according to claim 1, wherein: The top of the aluminum shell (2) is fixedly connected with a connecting strip (204), one side of the connecting strip (204) is fixedly connected with a connecting block (205), the top of the connecting strip (204) is provided with a sliding groove (206), and one side of the sliding groove (206) is provided with a limiting groove (207).

5. A variable resistance device according to claim 1, wherein: The insulated lead screw (301) is rotatably connected in the inside of the connecting strip (204), and the rotating knob (302) is rotatably connected in the inside of the connecting block (205).

6. A variable resistance device according to claim 1, wherein: The sliding contact (303) is slidably connected in the inside of the connecting strip (204), and the sliding contact (303) is slidably sleeved on one side of the contact (102).

7. A variable resistance device according to claim 1, wherein: The insulating sleeve two (304) is slidably connected in the inside of the sliding groove (206), and the threaded sleeve (305) is slidably connected in the inside of the limiting groove (207).

8. A variable resistance device according to claim 1, wherein: The threaded sleeve (305) is threadedly sleeved on the outer surface of the insulated lead screw (301), and the threaded sleeve (305) is arranged on one side of the sliding contact (303).

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