CN210073518U

CN210073518U - Resistor fine-tuning device

Info

Publication number: CN210073518U
Application number: CN201920918014.XU
Authority: CN
Inventors: 赵君; 薛慢慢; 孟秀
Original assignee: Shandong Hangtian Zhenghe Electronic Co Ltd
Current assignee: Shandong Hangtian Zhenghe Electronic Co Ltd
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2020-02-14
Anticipated expiration: 2029-06-18

Abstract

The utility model discloses a resistor trimming device belongs to resistor technical field, including protection casing and resistor main part, the bottom of resistor main part is provided with the bottom plate, the both sides of bottom plate all are provided with the through-hole, the both sides at protection casing top all articulate through the pivot has the cardboard, the top of cardboard is fixed with the card post that passes the through-hole inside, the outside threaded connection of card post has the clamping ring, and the clamping ring is located the top of bottom plate, the both sides of protection casing all are connected with the cardboard through the spring. The utility model discloses a twist and move the handle to it is rotatory to drive the lead screw, and then makes the movable block remove, in order to drive the gleitbretter at the removal of metal pole, can carry out slight adjustment according to the reading of the directional scale of pointer, and the use of giving people brings the convenience, and with resistor main part back-off in the inside of protection casing, makes the bottom plate be located the top of protection casing, is convenient for depositing of resistor, prevents that the resistor from receiving infecting of dust.

Description

Resistor fine-tuning device

Technical Field

The utility model relates to a resistor technical field specifically is a resistor micromatic setting.

Background

The sliding rheostat is a variable resistor which is common in laboratories and changes the resistance by changing the length of a resistance wire connected into a circuit part, so that the current in the circuit is gradually changed, but the sliding rheostat only needs to move a sliding sheet by hand when in use, the resistance cannot be finely adjusted, the existing resistor is inconvenient to store and poor in dustproof performance, and troubles are brought to people in use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the resistor fine-tuning device is provided for solving the problems that a sliding rheostat only needs to hold a hand to move a sliding sheet when in use, the resistor cannot be finely tuned, the existing resistor is inconvenient to store, the dustproof performance is poor, and trouble is brought to the use of people.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a resistor fine-tuning device, includes protection casing and resistor main part, the bottom of resistor main part is provided with the bottom plate, the both sides of bottom plate all are provided with the through-hole, the both sides at protection casing top all articulate through the pivot has the cardboard, the top of cardboard is fixed with the inside card post that passes the through-hole, the outside threaded connection of card post has the clamping ring, and the clamping ring is located the top of bottom plate, the both sides of protection casing all are connected with the cardboard through the spring, porcelain section of thick bamboo is installed to the top of bottom plate, the outside of porcelain section of thick bamboo is provided with the coil, the metal pole is installed to the top of porcelain section of thick bamboo, the outside sliding connection of metal pole has the gleitbretter, the end and the coil of gleitbretter contact, the lead screw is installed to the.

Preferably, the side of lead screw is connected with the handle, and the lateral surface of handle is provided with anti-skidding line.

Preferably, a scale is installed above the screw rod, and scale marks are arranged on the surface of the scale.

Preferably, the top of the moving block is connected with a pointer, the back of the pointer is in contact with the front of the scale, and the pointer is made of acrylic materials.

Preferably, the outside of card post is provided with the external screw thread, the inboard of clamping ring is provided with the internal thread that mutually supports with the external screw thread, card post and clamping ring pass through the external screw thread and can dismantle with the internal thread and be connected.

Preferably, the protective cover is made of PE plastic.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a twist and move the handle, it is rotatory to drive the lead screw, and then make the removal piece remove, in order to drive the gleitbretter in the removal of metal pole, can be according to the reading of the directional scale of pointer, carry out slight adjustment, the use of giving people brings conveniently, and with the inside of resistor main part back-off at the protection casing, make the bottom plate be located the top of protection casing, the extrusion spring, make the cardboard rotatory 90 to horizontal position, the card post passes the through-hole and fixes the bottom plate block, the clamping ring is screwed on, it is fixed to make the clamping ring compress tightly the bottom plate, the stable installation of resistor main part and protection casing has been guaranteed, be convenient for depositing of resistor, prevent that the resistor from being infected by the dust.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the present invention A;

fig. 3 is a schematic structural diagram of the resistor body of the present invention;

fig. 4 is a schematic structural view of the protective cover of the present invention.

In the figure: 1. a protective cover; 2. a resistor body; 3. a base plate; 4. clamping a plate; 5. clamping the column; 6. pressing a ring; 7. a through hole; 8. a spring; 9. a porcelain cylinder; 10. a coil; 11. a metal rod; 12. sliding blades; 13. a handle; 14. a lead screw; 15. a moving block; 16. a pointer; 17. and (4) a scale.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a resistor fine tuning device comprises a protective cover 1 and a resistor main body 2, wherein a bottom plate 3 is arranged at the bottom of the resistor main body 2, through holes 7 are arranged at both sides of the bottom plate 3, clamping plates 4 are hinged at both sides of the top of the protective cover 1 through a rotating shaft, clamping posts 5 penetrating through the through holes 7 are fixed at the top of the clamping plates 4, a pressing ring 6 is connected at the outer sides of the clamping posts 5 in a threaded manner, the pressing ring 6 is positioned at the top of the bottom plate 3, both sides of the protective cover 1 are connected with the clamping plates 4 through springs 8, a porcelain cylinder 9 is arranged above the bottom plate 3, a coil 10 is arranged at the outer side of the porcelain cylinder 9, a metal rod 11 is arranged above the porcelain cylinder 9, a slip sheet 12 is connected at the outer side of the metal rod 11 in a sliding manner, the tail end of the slip sheet 12 is in contact with the coil 10, the outside of card post 5 is provided with the external screw thread, and the inboard of clamping ring 6 is provided with the internal thread that mutually supports with the external screw thread, and card post 5 and clamping ring 6 can be dismantled with the internal thread through the external screw thread and be connected, and through the 6 covers of clamping ring on calorie post 5, the internal thread mutually supports with the external screw thread, compresses tightly fixedly bottom plate 3 to guarantee the stable connection of protection casing 1 and resistor main part 2, protection casing 1 is PE plastics material, and corrosion resisting property is good, and is pleasing to the eye.

In this embodiment, the handle 13 rotates to drive the lead screw 14 to rotate, so as to move the moving block 15, and further move the sliding piece 12 on the metal rod 11, so that the position of the sliding piece 12 contacting the coil 10 changes, and further adjust the length of the resistance wire connected to the circuit, thereby preventing inaccuracy of directly holding and moving the sliding piece 12.

Please refer to fig. 3, a handle 13 is connected to a side surface of the screw 14, and an anti-slip pattern is disposed on an outer side surface of the handle 13.

The utility model discloses in, anti-skidding line increase friction is convenient for carry out the rotating to handle 13 to make handle 13 drive the rotating of lead screw 14, make things convenient for the use of resistance.

Please refer to fig. 3, a scale 17 is installed above the screw 14, and the surface of the scale 17 is provided with scale lines; the top of the moving block 15 is connected with a pointer 16, the back of the pointer 16 contacts with the front of the scale 17, and the pointer 16 is made of acrylic material.

The utility model discloses in, when moving block 15 moved on lead screw 14, pointer 16 removed on 17 surfaces of scale, and the ya keli transparency is high, is convenient for carry out the partition adjustment to the length of resistance wire according to the index of pointer 16 on scale 17, makes things convenient for people to experiment.

The working principle is as follows: the lead wire is connected on the binding post of the resistor main body 2, the handle 13 is screwed to drive the lead screw 14 to rotate, the moving block 15 moves on the outer side of the lead screw 14, so as to drive the sliding sheet 12 to move on the metal rod 11, the contact position of the sliding sheet 12 and the coil 10 is changed, by changing the length of the coil 10, the resistance of the resistance wire changes, and can be finely adjusted according to the reading of the pointer 16 pointing to the scale 17, and when the resistor is not in use, the resistor body 2 is turned upside down in the protective cover 1, the bottom plate 3 is covered on the protective cover 1, the spring 8 is compressed, the clamping column 5 is clamped in the through hole 7, the press ring 6 is screwed on, the press ring 6 is pressed and fixed on the bottom plate 3 through the mutual matching of the internal thread and the external thread, and under the elasticity that spring 8 resets, make cardboard 4 to the chucking of bottom plate 3 mutually, guaranteed the stable installation of protection casing 1, be convenient for deposit the resistor.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A resistor trimming device comprises a protective cover (1) and a resistor main body (2), and is characterized in that: the resistor comprises a resistor main body (2), a bottom plate (3) is arranged at the bottom of the resistor main body (2), through holes (7) are formed in the two sides of the bottom plate (3), clamping plates (4) are hinged to the two sides of the top of a protective cover (1) through rotating shafts, clamping columns (5) penetrating through the through holes (7) are fixed at the tops of the clamping plates (4), pressing rings (6) are connected to the outer sides of the clamping columns (5) in a threaded mode, the pressing rings (6) are located at the tops of the bottom plate (3), the two sides of the protective cover (1) are connected with the clamping plates (4) through springs (8), porcelain tubes (9) are installed above the bottom plate (3), coils (10) are arranged on the outer sides of the porcelain tubes (9), metal rods (11) are installed above the porcelain tubes (9), sliding pieces (12) are connected to the outer sides of the metal rods (11) in a sliding mode, a lead screw (14) is installed above the metal rod (11), a moving block (15) is arranged on the outer side of the lead screw (14), and the top of the moving block (15) is fixed with the bottom of the sliding sheet (12).

2. A resistor trimming apparatus according to claim 1, wherein: the side of lead screw (14) is connected with handle (13), and the lateral surface of handle (13) is provided with anti-skidding line.

3. A resistor trimming apparatus according to claim 1, wherein: a scale (17) is arranged above the screw rod (14), and scale marks are arranged on the surface of the scale (17).

4. A resistor trimming apparatus according to claim 3, wherein: the top of the moving block (15) is connected with a pointer (16), the back of the pointer (16) is in contact with the front of the scale (17), and the pointer (16) is made of acrylic materials.

5. A resistor trimming apparatus according to claim 1, wherein: the outside of card post (5) is provided with the external screw thread, the inboard of clamping ring (6) is provided with the internal thread that mutually supports with the external screw thread, card post (5) and clamping ring (6) can be dismantled with the internal thread through the external screw thread and be connected.

6. A resistor trimming apparatus according to claim 1, wherein: the protective cover (1) is made of PE plastic.