CN212032931U

CN212032931U - Durable switch of loop resistance tester

Info

Publication number: CN212032931U
Application number: CN202020656252.0U
Authority: CN
Inventors: 李继东
Original assignee: Shandong Rupu Electronic Technology Co ltd
Current assignee: Sun Songling
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-11-27
Anticipated expiration: 2030-04-27

Abstract

The utility model discloses a durable switch of loop resistance tester, which comprises a housin, the top of casing is equipped with protecting sheathing, protecting sheathing's left side is equipped with the hinge, protecting sheathing passes through hinge and casing swing joint, protecting sheathing's right side fixedly connected with handle, the protecting sheathing inner chamber is equipped with the rotary button, the bottom of rotary button is close to left side department and is equipped with latch mechanism, the casing inner chamber is equipped with the cam, through latch mechanism, torsion spring, cam, current conducting plate, first spring, conducting rod's setting, can effective control the switch-on and the disconnection of circuit, can effectively avoid when the electric leakage appearing because the circuit is in the switch-on state for a long time potential safety hazard that causes, and effectively avoid external factors to disturb, guarantee its normal use; through the setting of protecting sheathing, avoid the rotary button to receive external factor's influence, play guard action, increase of service life to the rotary button.

Description

Durable switch of loop resistance tester

Technical Field

The utility model relates to a return circuit resistance tester technical field especially relates to a durable switch of return circuit resistance tester.

Background

The loop resistance tester is designed by combining a high-frequency switching power supply technology and a digital circuit technology. The method is suitable for measuring the loop resistance of the switch control equipment. The test current adopts a direct current fixing plate 100A recommended by national standard. The loop resistance can be measured directly in the case of the current-fixing plate 100A and is shown numerically. When the environment where the traditional loop resistance tester is located is severe, the used switch is not protected, so that the circuit is easily interfered by external factors, the service life of the circuit is shortened, the circuit control effect of the switch is poor, and the normal use of the loop resistance tester is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a durable switch of return circuit resistance tester, the purpose is in the normal use who guarantees return circuit resistance tester.

In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:

a durable switch of a loop resistance tester comprises a shell, wherein a protective shell is arranged at the top of the shell, a hinge is arranged on the left side of the protective shell, the protective shell is movably connected with the shell through the hinge, a handle is fixedly connected to the right side of the protective shell, a rotary button is arranged in an inner cavity of the protective shell, a clamping mechanism is arranged at the position, close to the left side, of the bottom of the rotary button, a cam is arranged in the inner cavity of the shell, a torsion spring is fixedly connected between the top of the cam and the top of the inner cavity of the shell, a rotary rod is inserted into the inner cavity of the cam and fixedly connected with the cam, a first opening matched with the rotary rod is formed in the top of the shell, a bearing is fixedly connected to the bottom of the inner cavity of the shell, one end of the rotary rod sequentially penetrates through the torsion spring and the first opening and is fixedly connected, the left side of cam is equipped with the current conducting plate of laminating each other with it, the left side of current conducting plate is equipped with the fixed plate, the bottom fixed connection of fixed plate is in casing inner chamber bottom, the first spring of fixedly connected with between fixed plate and the current conducting plate, the current conducting plate is close to one side fixedly connected with conducting rod of fixed plate, set up the second trompil of matcing each other with the conducting rod on the fixed plate, first spring and second trompil are run through in proper order to the one end that the current conducting plate was kept away from to the conducting rod, casing inner chamber left side fixedly connected with connects the electroplax, it laminates each other with the conducting.

Preferably, in the above-mentioned durable switch of loop resistance tester, the latch mechanism includes hollow pole, hollow pole and turn button fixed connection, hollow pole inner chamber is equipped with the fly leaf, fixedly connected with second spring between the top of fly leaf and the hollow pole, the bottom fixedly connected with inserted bar of fly leaf, the third trompil that matches each other with the inserted bar is seted up to the bottom of hollow pole, the spout that matches each other with the inserted bar is seted up at the top of casing, the jack that matches each other with the inserted bar is seted up to the one end of spout, the one end that the fly leaf was kept away from to the inserted bar runs through the third trompil, and plug-in at the jack inner chamber, the fluting that matches each other with the fly leaf is seted up in the left side of hollow pole, the fluting is run through.

Based on the technical characteristics, the movement of the rotary button is effectively controlled through the arrangement of the clamping mechanism.

Preferably, in the durable switch of the loop resistance tester, the bottom of the conductive plate is fixedly connected with a circular ring, a limiting rod is inserted into an inner cavity of the circular ring, and two ends of the limiting rod are fixedly connected with the shell.

Based on the technical characteristics, the limiting function is achieved through the arrangement of the circular ring.

Preferably, in the durable switch of the loop resistance tester, the initial state of the second spring is a compressed state.

Based on the technical characteristics, the second spring is set to be in a compressed state, so that the insertion rod can be inserted into the insertion hole.

Preferably, in the durable switch of the loop resistance tester, a horizontal distance between the circular ring and the right side of the limiting rod is smaller than a horizontal distance between the fixing plate and the power connection plate.

Based on the technical characteristics, the conducting rod is ensured not to be separated from the fixing plate through the control of the distance.

The utility model has the advantages that:

1. through the arrangement of the clamping mechanism, the torsion spring, the cam, the current-conducting plate, the first spring and the current-conducting rod, the connection and disconnection of the circuit can be effectively controlled, potential safety hazards caused by the fact that the circuit is in a connected state for a long time when electric leakage occurs can be effectively avoided, interference of external factors is effectively avoided, and normal use of the circuit is guaranteed;

2. through the setting of protecting sheathing, avoid the rotary button to receive external factor's influence, play guard action, increase of service life to the rotary button.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

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

FIG. 2 is an enlarged view of a portion A of FIG. 1 according to the present invention;

FIG. 3 is a top view of the sliding slot of the middle part of the present invention;

fig. 4 is a top view of the cam of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a housing; 2. rotating the button; 3. a rotating rod; 4. a protective housing; 5. a handle; 6. a torsion spring; 7. a cam; 8. a conductive plate; 9. a first spring; 10. a fixing plate; 11. a conductive rod; 12. a power connection plate; 13. a second spring; 14. a hollow shaft; 15. inserting a rod; 16. a movable plate; 17. a circular ring; 18. a limiting rod.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present embodiment is a durable switch of a loop resistance tester, including a housing 1, a protective housing 4 is disposed on a top of the housing 1, a hinge is disposed on a left side of the protective housing 4, the protective housing 4 is movably connected to the housing 1 through the hinge, a handle 5 is fixedly connected to a right side of the protective housing 4, a rotary button 2 is disposed in an inner cavity of the protective housing 4, a latch mechanism is disposed near the left side of a bottom of the rotary button 2, the latch mechanism includes a hollow rod 14, the hollow rod 14 is fixedly connected to the rotary button 2, a movable plate 16 is disposed in the inner cavity of the hollow rod 14, a second spring 13 is fixedly connected between a top of the movable plate 16 and the hollow rod 14, an initial state of the second spring 13 is a compressed state, by setting the second spring 13 to the compressed state, it is ensured that the latch rod 15 can be inserted into a jack, the bottom of the hollow rod 14 is provided with a third hole matched with the inserted link 15, the top of the shell 1 is provided with a sliding groove matched with the inserted link 15, one end of the sliding groove is provided with a jack matched with the inserted link 15, one end of the inserted link 15 far away from the movable plate 16 is penetrated through the third hole and is inserted in the inner cavity of the jack, the left side of the hollow rod 14 is provided with a slot matched with the movable plate 16, the left side of the movable plate 16 is penetrated through the slot, the movement of the rotary button 2 is effectively controlled through the arrangement of the clamping mechanism, the inner cavity of the shell 1 is provided with a cam 7, a torsion spring 6 is fixedly connected between the top of the cam 7 and the top of the inner cavity of the shell 1, the inner cavity of the cam 7 is inserted with a rotary rod 3, the rotary rod 3 is fixedly connected with the cam 7, the top of the shell 1 is provided with a first hole matched with the rotary rod 3, the bottom, and is fixedly connected with the rotary button 2, the other end of the rotary rod 3 is inserted in the inner cavity of the bearing, the left side of the cam 7 is provided with a conductive plate 8 which is mutually attached with the cam, the left side of the conductive plate 8 is provided with a fixed plate 10, the bottom of the fixed plate 10 is fixedly connected with the bottom of the inner cavity of the shell 1, a first spring 9 is fixedly connected between the fixed plate 10 and the conductive plate 8, one side of the conductive plate 8, which is close to the fixed plate 10, is fixedly connected with a conductive rod 11, the fixed plate 10 is provided with a second opening which is mutually matched with the conductive rod 11, one end of the conductive rod 11, which is far away from the conductive plate 8, sequentially penetrates through the first spring 9 and the second opening, the left side of the inner cavity of the shell 1 is fixedly connected with an electricity-connecting plate 12, the electricity-connecting plate 12 is mutually attached with the conductive rod 11, the, play limiting displacement, horizontal distance between the right side of ring 17 and gag lever post 18 is less than fixed plate 10 and connects the horizontal distance between the electric plate 12, control through the distance, guarantee that conducting rod 11 can not break away from fixed plate 10, through latch mechanism, torsion spring 6, cam 7, current conducting plate 8, first spring 9, the setting of conducting rod 11, switch-on and the disconnection that can effective control circuit, the potential safety hazard that causes because of the circuit is in the on-state for a long time when can effectively avoid appearing the electric leakage, and effectively avoid external factor interference, guarantee its normal use, setting through protecting sheathing 4, avoid rotary button 2 to receive external factor's influence, rotary button 2 plays the guard action, prolonged service life.

When the utility model is used, the protective shell 4 is opened by the handle 5, the rotary button 2 is rotated, the rotary button 2 drives the hollow rod 14 to rotate, the hollow rod 14 drives the inserted rod 15 to move in the chute and to be inserted into the jack, meanwhile, the rotary button 2 drives the rotary rod 3 to rotate, the rotary rod 3 drives the cam 7 to rotate, so that the torsion spring 6 is twisted, when the protruding part of the cam 7 rotates to be contacted with the conductive plate 8, the conductive plate 8 drives the conductive rod 11 to move leftwards to be contacted with the electric connection plate 12 and compress the first spring 9, the circuit is in a connection state through the contact of the conductive plate 8, the conductive rod 11 and the electric connection plate 12, when the movable plate 16 is moved upwards, the movable plate 16 drives the inserted rod 15 to move synchronously, so that the inserted rod 15 is separated from the jack, at the moment, the cam 7 is driven to rotate under the action of the recovery deformation of the torsion spring 6, cam 7 drives bull stick 3 and rotates, bull stick 3 drives swivel button 2 and rotates, swivel button 2 drives inserted bar 15 and removes in the spout, simultaneously cam 7's bulge rotates to and separates with current conducting plate 8, make current conducting plate 8 resume the effect of deformation at first spring 9 and drive conducting rod 11 and remove to and connect the separation of electric plate 12, make the circuit be in the off-state, setting through protecting sheathing 4, avoid swivel button 2 to receive the influence of external factor, the protection role is played to swivel button 2, prolonged service life, through latch mechanism, torsion spring 6, cam 7, current conducting plate 8, first spring 9, the setting of conducting rod 11, switch-on and the disconnection that can effective control circuit, because of the circuit is in the on-state and the potential safety hazard that causes for a long time when can effectively avoid appearing the electric leakage.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A ruggedized switch for a loop resistance tester, comprising a housing (1), characterized in that: the improved structure of the automobile seat is characterized in that a protective shell (4) is arranged at the top of the shell (1), a hinge is arranged on the left side of the protective shell (4), the protective shell (4) is movably connected with the shell (1) through the hinge, a handle (5) is fixedly connected to the right side of the protective shell (4), a rotary button (2) is arranged in the inner cavity of the protective shell (4), a clamping mechanism is arranged at the position, close to the left side, of the bottom of the rotary button (2), a cam (7) is arranged in the inner cavity of the shell (1), a torsion spring (6) is fixedly connected between the top of the cam (7) and the top of the inner cavity of the shell (1), a rotary rod (3) is inserted into the inner cavity of the cam (7), the rotary rod (3) is fixedly connected with the cam (7), a first open hole matched with the rotary rod (3) is formed in the top of the shell, one end of the rotating rod (3) penetrates through the torsion spring (6) and the first opening in sequence and is fixedly connected with the rotating button (2), the other end of the rotating rod (3) is inserted into an inner cavity of the bearing, a conductive plate (8) which is attached to the cam (7) is arranged on the left side of the cam (7), a fixed plate (10) is arranged on the left side of the conductive plate (8), the bottom of the fixed plate (10) is fixedly connected to the bottom of the inner cavity of the shell (1), a first spring (9) is fixedly connected between the fixed plate (10) and the conductive plate (8), a conductive rod (11) is fixedly connected to one side, close to the fixed plate (10), of the conductive plate (8), a second opening which is matched with the conductive rod (11) is formed in the fixed plate (10), and one end, far away from the conductive plate (8), of the conductive rod (11) penetrates through the first spring, the shell (1) inner chamber left side fixedly connected with connects electroplax (12), connect electroplax (12) and conducting rod (11) to laminate each other.

2. The robust switch for loop resistance tester as recited in claim 1, further comprising: the clamping mechanism comprises a hollow rod (14), the hollow rod (14) is fixedly connected with the rotary button (2), a movable plate (16) is arranged in the inner cavity of the hollow rod (14), a second spring (13) is fixedly connected between the top of the movable plate (16) and the hollow rod (14), the bottom of the movable plate (16) is fixedly connected with an inserted bar (15), the bottom of the hollow bar (14) is provided with a third hole matched with the inserted bar (15), the top of the shell (1) is provided with a sliding chute matched with the inserted link (15), one end of the sliding groove is provided with a jack matched with the inserted bar (15), one end of the inserted bar (15) far away from the movable plate (16) penetrates through the third opening, and the hollow rod is inserted into the cavity of the jack, the left side of the hollow rod (14) is provided with a groove matched with the movable plate (16), and the left side of the movable plate (16) penetrates through the groove.

3. The robust switch for loop resistance tester as recited in claim 1, further comprising: the bottom fixedly connected with ring (17) of current conducting plate (8), ring (17) inner chamber is pegged graft and is had gag lever post (18), the both ends and casing (1) fixed connection of gag lever post (18).

4. The robust switch for loop resistance tester as recited in claim 2, further comprising: the initial state of the second spring (13) is a compressed state.

5. The robust switch for loop resistance tester as recited in claim 3, further comprising: the horizontal distance between the circular ring (17) and the right side of the limiting rod (18) is smaller than the horizontal distance between the fixing plate (10) and the electric connection plate (12).