CN215726491U

CN215726491U - Micro-gap switch and mini switch contact elasticity test equipment

Info

Publication number: CN215726491U
Application number: CN202122109854.1U
Authority: CN
Inventors: 申俊杰; 杜娟娟; 苗宏伟
Original assignee: Hebi Jinke Electric Appliance Co ltd
Current assignee: Hebi Jinke Electric Appliance Co ltd
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2022-02-01
Anticipated expiration: 2031-09-02

Abstract

The utility model provides a microswitch and mini switch contact elasticity test device, which comprises a base, a detection platform, a weighing sensor, a micro-drum, a power supply module and a display, wherein a linear guide rail is transversely arranged on the front side part of the base, and a sliding block is arranged on the linear guide rail; the detection table is arranged at the top of the sliding block, a switch fixing seat is arranged on the detection table, a spring wiring terminal which is abutted to a switch plug is arranged on the switch fixing seat, and the spring wiring terminal is connected with an indicator lamp through a lead; the weighing sensor is longitudinally arranged at the rear of the left side of the detection table through a vertical arm, a force bearing surface at the front end of the weighing sensor is provided with a probe rod through a connecting plate, and the probe rod is over against the upper part of the detection table; the micro-drum is arranged on the right side of the detection table through a first support; the power module and the display are arranged behind the base, and the weighing sensor is connected with the display. The testing equipment can be assembled with a switch fixing seat matched with a micro switch or a mini switch, and the detection requirements of the contact elasticity of various pressure switches are met.

Description

Micro-gap switch and mini switch contact elasticity test equipment

Technical Field

The utility model relates to switch contact elasticity detection equipment, in particular to microswitch and mini switch contact elasticity test equipment.

Background

The pressure switch is a special instrument for controlling pressure in an industrial process testing and control system, is an electric switch using pressure as a control signal, and is divided into two categories according to the working principle: mechanical pressure switch, electronic pressure switch. The mechanical pressure switch is a microswitch caused by pure mechanical deformation, and when the pressure in the system is higher than a certain set pressure value, the free ends of different pressure sensing elements (a spring tube, a diaphragm, a corrugated tube, a piston and the like) generate displacement; when the pressure reaches the rated recovery value, the pressure is reversely displaced, the switch automatically resets, and finally an electric signal of a switching value is output. The movable contact and the fixed contact in the microswitch and the mini switch are in a normally closed state, the movable contact can be displaced by external force to separate the movable contact from the fixed contact, the movable contact and the fixed contact can be separated only by applying too much pressure, if the pressure is too low, the movable contact cannot be separated by too little displacement, and if the pressure is too high, the resilience of the corresponding movable contact can be realized by pressing down for a long time, so that equipment capable of effectively detecting the elasticity (or pressure value) of the movable contact is required to be developed.

Disclosure of Invention

The utility model provides a microswitch and mini switch contact elasticity testing device which can effectively test the elasticity value of a movable contact of a pressure switch and can selectively test the elasticity of the contact of the microswitch and the mini switch.

The utility model is realized by the following technical scheme: a microswitch and mini switch contact elasticity test device comprises a base, a detection table, a weighing sensor, a micro-drum, a power supply module and a display, wherein a linear guide rail is transversely arranged on the front side part of the base, and a sliding block is arranged on the linear guide rail; the detection table is arranged at the top of the sliding block, a switch fixing seat is arranged on the detection table, a spring wiring terminal which is abutted to a switch plug is arranged on the switch fixing seat, and the spring wiring terminal is connected with an indicator lamp through a lead; the weighing sensor is longitudinally arranged at the rear of the left side of the detection table through a vertical arm, a force bearing surface at the front end of the weighing sensor is provided with a probe rod through a connecting plate, and the probe rod is over against the upper part of the detection table; the micro-drum is arranged on the right side of the detection table through a first support and can push the detection table to slide along the linear guide rail; the power module and the display are arranged behind the base, and the weighing sensor is connected with the display.

Preferably, the switch fixing seat is a microswitch fixing seat or a mini switch fixing seat.

Preferably, the microswitch fixing seat comprises a first bottom plate for placing a microswitch, a limiting plate is arranged at one end, away from the weighing sensor, of the first bottom plate, a spring binding post which is abutted to the switch plug is arranged on the rear side of the first bottom plate through an L-shaped seat, and a positioning plate is arranged at the top of one side, close to the spring binding post, of the limiting plate through a first adjustable bolt.

Preferably, the mini switch fixing seat comprises a second bottom plate, a first placing plate is arranged on one side, close to the weighing sensor, of the second bottom plate, a yielding hole is formed in the first placing plate, the right side of the first placing plate is provided with a second placing plate right facing the yielding hole, a second adjustable bolt is arranged on the rear portion of the second placing plate, and spring binding posts abutted to the switch plug are arranged on the front side and the rear side of the second placing plate through L-shaped seats.

Preferably, a lifting ring screw is arranged on the rear side of the detection table, a fixing column is arranged on the rear side of the right side of the detection table, and a spring is arranged between the fixing column and the lifting ring screw.

Preferably, a limit bolt is arranged on the left side of the detection table through a second support.

Preferably, a protection plate for protecting the weighing sensor is arranged at the top of the vertical arm.

Compared with the prior art, the utility model has the advantages that: this test equipment fixes the switch and tests on examining test table, utilizes the micro-section of thick bamboo to promote pressure switch, makes its movable contact exert pressure to sensor stress surface to realize the detection of switch movable contact elasticity value, and utilize the display to show, the accuracy is strong, also can assemble simultaneously with micro-gap switch or mini switch assorted switch fixing base, realize the detection demand of multiple pressure switch contact elasticity.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a schematic structural diagram of the microswitch fixing seat.

Fig. 3 is a schematic structural diagram of a mini switch holder.

In the figure: 1. a base; 2. a detection table; 3. a weighing sensor; 4. a micro-drum; 5. a power supply module; 6. a display; 7. a linear guide rail; 8. a microswitch fixing seat; 8' mini switch fixing seat; 9. a spring terminal; 10. an indicator light; 11. erecting an arm; 12. a probe rod; 13. fixing a column; 14. a spring; 15. a limit bolt; 16. a protection plate; 80. a microswitch; 801. a movable contact; 81. a first base plate; 82. a limiting plate; 83. a first adjustable bolt; 84. positioning a plate; 80', a mini switch; 801' top cover; 802', a pin; 81', a second base plate; 82', a first placing plate; 83' and a relief hole; 84', a second placing plate; 85', a second adjustable bolt.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

The microswitch and mini switch contact elasticity test equipment can be provided with different switch fixing seats according to requirements, and the contact elasticity test of the microswitch or mini switch is realized. Specifically, the device comprises a base 1, a detection table 2, a weighing sensor 3, a micro-drum 4, a power module 5 and a display 6, wherein a linear guide rail 7 is transversely arranged on the front side part of the base 1, and a sliding block is arranged on the linear guide rail; the detection platform 2 is arranged at the top of the sliding block and driven by the sliding block to move back and forth, a switch fixing seat is detachably arranged on the detection platform 2, spring binding posts 9 are arranged on the switch fixing seat, the number of the spring binding posts is 2, the spring binding posts form a closable loop through a lead, an indicator lamp 10 is connected in series on the closable loop, after the switch is placed and fixed, a switch plug is abutted against a spring below the spring binding posts to realize electrical communication, and at the moment, the indicator lamp is lightened; the weighing sensor 3 is longitudinally arranged at the rear of the left side of the detection table 2 through a vertical arm 11, the weighing sensor adopts a balance beam type weighing sensor, one end of the balance beam type weighing sensor can be fixed, one end of the balance beam type weighing sensor is stressed, the fixed end of the balance beam type weighing sensor is arranged at the upper part of the vertical arm, the stressed end of the balance beam type weighing sensor is positioned in front of the vertical arm, a probe rod 12 is arranged on the stressed surface of the front end of the balance beam type weighing sensor through a connecting plate, the probe rod is over against the detection table, the micro-cylinder 4 is arranged at the right side of the detection table through a first support, the front end of the micro-cylinder is over against the side wall of the detection table, and the detection table can be pushed to slide along a linear guide rail, so that a switch is close to or far away from the probe rod; the power module 5 and the display 6 can be arranged on the bottom plate or can be arranged independently, in the embodiment, the power module and the display are fixed independently and are placed behind the base through the bracket, the power module is connected with each electricity utilization module, and a 220V power supply is converted into voltage required by each electricity utilization module; the weighing sensor is connected with the display, and the measured pressure value is displayed through the display.

In this embodiment, the switch fixing base may be a micro switch fixing base 8 or a mini switch fixing base 8', and the two switch fixing bases are respectively arranged according to a micro switch or a mini switch structure.

The micro switch 80 is a rectangular structure, a plug is arranged on the side surface in the width direction, a movable contact and a fixed contact which are connected with the plug are arranged in the micro switch, the movable contact and the fixed contact are arranged in a joint mode and can be separated, and the movable contact 801 extends to the outer side of the length direction of the micro switch. The micro-switch fixing seat 8 comprises a first bottom plate 81 for placing a micro-switch, a limiting plate 82 is arranged at one end, away from the weighing sensor, of the first bottom plate, a spring terminal 9 connected with a switch plug in a butting mode is arranged on the rear side of the first bottom plate through an L-shaped seat, and a positioning plate 84 is arranged at the top of one side, close to the spring terminal, of the limiting plate through a first adjustable bolt 83. When the micro-switch is used, the micro-switch is fixed on the first bottom plate, the inner side of the micro-switch is close to the limiting plate, the plug of the micro-switch is respectively abutted against the spring of the spring binding post, the circuit is conducted, the indicator lamp is lightened, and the switch is locked by the positioning plate through the adjustable bolt; then, the micro-cylinder is utilized to push the micro-switch to move forwards, when the movable contact touches the probe rod, the movable contact continues to move forwards, the movable contact can apply a forward pressure to the probe rod, the pressure value can be measured by the weighing sensor, the movable contact continues to move forwards until the movable contact is separated from the fixed contact, the circuit is disconnected, the indicator lamp is turned off, and the pressure value measured by the weighing sensor is the elastic value of the movable contact of the micro-switch.

The mini switch 80 ' is of a cylindrical structure, a plug is arranged at the lower part of the mini switch, a movable contact and a fixed contact which are connected with the plug are arranged in the mini switch, the movable contact and the fixed contact are arranged in a fitting mode, the movable contact is located below the fixed contact, the mini switch is required to be matched with a top cover 801 ' and a pin 802 ' during testing, the top cover 801 ' is fixed above the mini switch, the pin 802 ' penetrates through the top cover, and the lower end of the pin is abutted to the movable contact. The mini switch fixing seat 8 ' comprises a second bottom plate 81 ', a first placing plate 82 ' is arranged on one side, close to the weighing sensor, of the second bottom plate, a yielding hole 83 ' is formed in the first placing plate 82 ', a second placing plate 84 ' is arranged on the right side of the first placing plate and opposite to the yielding hole, a second adjustable bolt 85 ' is arranged on the rear portion of the second placing plate, and spring binding posts 9 abutted to switch plugs are arranged on the front side and the rear side of the second placing plate through L-shaped seats. When the miniature switch is used, the miniature switch is placed on the second placing plate, the plug of the miniature switch is respectively abutted against the spring of the spring binding post, the circuit is conducted, the indicator lamp is lightened, the top cover of the miniature switch is abutted against the side wall of the first placing plate and locked through the adjustable bolt, and the pin extends out of the first placing plate through the abdicating hole; and then, the micro-cylinder is used for pushing the mini switch to move forwards, when the pin touches the probe rod, the pin continues to move forwards, forward pressure can be applied to the probe rod by the pin, the pressure value can be measured by the weighing sensor, the pin continues to move forwards until the movable contact is separated from the fixed contact, the circuit is disconnected, the indicator lamp is turned off, and the pressure value measured by the weighing sensor is the elastic value of the mini movable contact.

In order to prevent the slide block from sliding randomly and return automatically after the micro-drum contracts, the rear side of the detection table is provided with a lifting screw, the rear side of the right side of the detection table is provided with a fixed column 13, a spring 14 is arranged between the fixed column 13 and the lifting screw and is arranged in parallel with the detection table, when the micro-drum expands, the detection table is tensioned to be tightly attached to the micro-drum and does not move along with the slide block, and when the micro-drum contracts, the detection table returns along with the slide block.

In this embodiment, in order to limit the moving range of the detection table, a second support is arranged on the left side of the detection table, a limit bolt 15 is arranged on the second support, the moving range of the detection table to the left does not exceed the tail of the limit bolt, and the position of the limit bolt can be adjusted according to actual needs.

Meanwhile, in order to avoid the damage to the weighing sensor caused by the falling of an object, a protection plate 16 is arranged at the top of the vertical arm for fixing the weighing sensor.

The operating principle of the microswitch and mini switch contact elasticity testing equipment is as follows: fix micro-gap switch or mini switch, its plug respectively with spring phase-change connection of spring terminal, the circuit switches on, the pilot lamp is lighted, then utilize the micro-section of thick bamboo to promote switch and move forward, touch the probe rod when its movable contact, continue to move ahead, the movable contact can apply a forward pressure to the probe rod, this pressure value can be measured through weighing sensor, it separates to movable contact and stationary contact to continue to move ahead, the circuit breaks off, the pilot lamp extinguishes, the pressure value that weighing sensor measured this moment is the elasticity value of switch movable contact, its elasticity value is shown through the display.

Claims

1. A micro-gap switch and mini switch contact elasticity test equipment which characterized in that: the device comprises a base, a detection table, a weighing sensor, a micro-drum, a power supply module and a display, wherein a linear guide rail is transversely arranged on the front side part of the base, and a sliding block is arranged on the linear guide rail; the detection table is arranged at the top of the sliding block, a switch fixing seat is arranged on the detection table, a spring wiring terminal which is abutted to a switch plug is arranged on the switch fixing seat, and the spring wiring terminal is connected with an indicator lamp through a lead; the weighing sensor is longitudinally arranged at the rear of the left side of the detection table through a vertical arm, a force bearing surface at the front end of the weighing sensor is provided with a probe rod through a connecting plate, and the probe rod is over against the upper part of the detection table; the micro-drum is arranged on the right side of the detection table through a first support and can push the detection table to slide along the linear guide rail; the power module and the display are arranged behind the base, and the weighing sensor is connected with the display.

2. The micro-switch and mini-switch contact spring force testing apparatus as claimed in claim 1, wherein: the switch fixing seat is a microswitch fixing seat or a mini switch fixing seat.

3. The micro-switch and mini-switch contact spring force testing apparatus as claimed in claim 2, wherein: the microswitch fixing seat comprises a first bottom plate for placing a microswitch, a limiting plate is arranged at one end, away from the weighing sensor, of the first bottom plate, a spring terminal connected with a switch plug in a butting mode is arranged on the rear side of the first bottom plate through an L-shaped seat, and a positioning plate is arranged at the top of one side, close to the spring terminal, of the limiting plate through a first adjustable bolt.

4. The micro-switch and mini-switch contact spring force testing apparatus as claimed in claim 2, wherein: the mini switch fixing seat comprises a second bottom plate, a first placing plate is arranged on one side, close to the weighing sensor, of the second bottom plate, a yielding hole is formed in the first placing plate, the right side of the first placing plate is provided with a second placing plate right to the yielding hole, a second adjustable bolt is arranged on the rear portion of the second placing plate, and spring terminals which are abutted to the switch plug are arranged on the front side and the rear side of the second placing plate through L-shaped seats.

5. The micro-switch and mini-switch contact spring force testing apparatus as claimed in claim 1, wherein: the detection table is characterized in that lifting ring screws are arranged on the rear side of the detection table, fixing columns are arranged on the rear side of the right side of the detection table, and springs are arranged between the fixing columns and the lifting ring screws.

6. The micro-switch and mini-switch contact spring force testing apparatus as claimed in claim 1, wherein: and a limiting bolt is arranged on the left side of the detection table through a second support.

7. The micro-switch and mini-switch contact spring force testing apparatus as claimed in claim 1, wherein: and a protection plate for protecting the weighing sensor is arranged at the top of the vertical arm.