Relay with test button

Abstract

The utility model discloses a relay with a test button, which comprises a button assembly and a relay shell, a coil, a movable contact, two fixed contacts, an elastic piece and a contact fixing block are arranged in the relay shell, the coil is fixed on one side of the relay shell, a support is arranged at the upper end of the coil, and the movable contact is fixed on the support. The contact fixing block is located on one side of the coil, the end of the contact fixing block is fixed to the support in a sliding fit mode, the movable contact is fixed to the bottom of the contact fixing block, the two fixed contacts are fixed to the bottom of the relay shell, the bottom of the elastic piece is embedded into the bottom of the relay shell, and the other end of the elastic piece is in a bent state, close to the contact fixing block and provided with a pull ring. An inserting rod is arranged at the bottom of the contact fixing block, the button assembly comprises a button head, a driving rod penetrating into the relay shell is arranged at the bottom of the button head, and the driving rod is located on one side of the contact fixing block and arranged in an abutting fit mode. The button assembly of the relay is simple and practical in structure, good in stability and worthy of vigorous popularization.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, and more particularly to a relay with a test button. Background Art

[0002] A relay is a switch that uses an electromagnet to control the on / off of a circuit and is widely used as a signal conversion component in control circuits. Existing relays are mostly available in two designs. One design only has a manual momentary test function, but this design lacks a false alarm feature, which can easily lead to malfunctions and affect normal operation. Another design offers both a manual momentary test function and a false alarm feature. However, the false alarm feature in this design has a complex structure, making operation complex and prone to failure when in the protected state, thus reducing structural stability. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a relay with a test button.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A relay with a test button, comprising a button assembly and a relay housing, the relay housing being provided with a mounting slot for mounting the button assembly, the relay housing being provided with a coil, a movable contact, two fixed contacts, an elastic member, and a contact fixing block, the coil being fixed to one side of the relay housing, a bracket being provided at the upper end of the coil, the contact fixing block being located on one side of the coil, and the end of the contact fixing block being fixed to the bracket in a sliding fit, the movable contact being fixed to the bottom of the contact fixing block, the two fixed contacts being fixed to the bottom of the relay housing and respectively located on either side of the movable contact, the bottom of the elastic member being embedded in the bottom of the relay housing, the other end being bent close to the contact fixing block and provided with a pull ring, the bottom of the contact fixing block being provided with an insertion rod inserted into the pull ring, the button assembly comprising a button head that slides back and forth in the mounting slot, the bottom of the button head being provided with a drive rod that penetrates into the relay housing, the drive rod being provided on one side of the contact fixing block in an interfering fit.

[0005] The utility model is further configured as follows: sliding blocks are respectively provided on both sides of the button head, sliding grooves for sliding cooperation with the sliding blocks are respectively provided on both sides of the mounting groove, and a limiting groove for cooperating with the sliding block is provided on the upper side surface of the sliding groove away from one end of the movable contact.

[0006] The utility model is further configured as follows: protrusions are respectively provided on both sides of the bracket, and sliding grooves that are slidably matched with the protrusions are respectively provided on both sides of the contact fixing block.

[0007] By adopting the above technical solution, the button assembly of the practical relay has a simple and practical structure and good stability, and is worthy of vigorous promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0009] Figure 2 This is an exploded view of the structure of the present utility model;

[0010] Figure 3 for Figure 2 The enlarged view of point a in the middle;

[0011] Figure 4 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0012] Figure 5 for Figure 4 Enlarged view of point b in the middle.

[0013] 1. Button assembly; 10. Button head; 11. Drive rod; 12. Sliding block; 2. Relay housing; 20. Mounting slot; 200. Sliding slot; 201. Limiting slot; 21. Coil; 22. Movable contact; 23. Fixed contact; 4. Elastic member; 40. Pull ring; 5. Contact fixing block; 50. Insert rod; 51. Sliding slot; 6. Bracket; 60. Bump. DETAILED DESCRIPTION

[0014] Reference Figures 1 to 5 The embodiments of the present invention are further described.

[0015] The utility model discloses a relay with a test button, comprising a button assembly 1 and a relay housing 2, wherein the relay housing 2 is provided with a mounting slot 20 for mounting the button assembly 1, a coil 21, a movable contact 22, two fixed contacts 23, an elastic member 4 and a contact fixing block 5 are arranged in the relay housing 2, the coil 21 is fixed to one side of the relay housing 2, a bracket 6 is provided at the upper end of the coil 21, the contact fixing block 5 is located on one side of the coil 21 and the end of the contact fixing block 5 is fixed on the bracket 6 by sliding fit, the movable contact 22 is fixed to the contact fixing block 5, two fixed contacts 23 are fixed to the bottom of the relay housing 2 and are respectively located on both sides of the movable contact 22, the bottom of the elastic member 4 is embedded in the bottom of the relay housing 2, and the other end is bent close to the contact fixing block 5 and is provided with a pull ring 40, and an insertion rod 50 is provided at the bottom of the contact fixing block 5 and inserted into the pull ring 40, the button assembly 1 includes a button head 10 arranged in the mounting groove 20 and sliding back and forth, and a driving rod 11 is provided at the bottom of the button head 10 that penetrates into the relay housing 2, and the driving rod 11 is located on one side of the contact fixing block 5 and is arranged in a resisting fit.

[0016] Furthermore, sliding blocks 12 are respectively provided on both sides of the button head 10, and sliding grooves 200 for sliding cooperation with the sliding block 12 are respectively provided on both sides of the mounting groove 20, and a limiting groove 201 for engaging with the sliding block 12 is provided on the upper side surface of the sliding groove 200 away from one end of the movable contact 22.

[0017] Furthermore, protrusions 60 are respectively provided on both sides of the bracket 6 , and sliding grooves 51 slidably matched with the protrusions 60 are respectively provided on both sides of the contact fixing block 5 .

[0018] Working principle: Figure 4As shown, when the button assembly 1 is in the closed state, the drive rod 11 at the bottom of the button head 10 firmly presses against the contact fixing block 5, ensuring that the movable contact 22 on the contact fixing block 5 is always electrically connected to one of the fixed contacts 23. This is the normal operating state of the relay. When the relay needs to be tested, the button head 10 is moved, causing the slider 12 of the button head 10 to slide within the sliding groove 200 in the mounting slot 20. When the slider 12 slides into the limit groove 201, it reaches the test position. At this time, the button head 10 drives the drive rod 11 away from the contact fixing block 5. During this process, the contact fixing block 5 is subjected to the elastic force of the elastic member 4 and always follows the drive rod 11 along the bracket 6, thereby electrically connecting the movable contact 22 at the bottom of the contact fixing block 5 to the other fixed contact 23, realizing the test function. When the test is completed, the button head 10 is pushed back to its original position, at which point the contact fixing block 5 drives the movable contact back to its original position, realizing the normal operating state of the relay. The entire test process is very stable due to its simple and uncomplicated structure, and is worthy of promotion.

[0019] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A relay with a test button, characterized in that: The invention comprises a button assembly and a relay housing, wherein the relay housing is provided with a mounting groove for mounting the button assembly, and a coil, a movable contact, two fixed contacts, an elastic member and a contact fixing block are arranged in the relay housing, the coil is fixed to one side of the relay housing, a bracket is provided at the upper end of the coil, the contact fixing block is located on one side of the coil and the end of the contact fixing block is fixed on the bracket in a sliding fit, the movable contact is fixed to the bottom of the contact fixing block, the two fixed contacts are fixed to the bottom of the relay housing and are respectively located on both sides of the movable contact, the bottom of the elastic member is embedded in the bottom of the relay housing, and the other end is bent close to the contact fixing block and is provided with a pull ring, and an insertion rod inserted in the pull ring is provided at the bottom of the contact fixing block; The button assembly includes a button head that is arranged in the installation groove and slides back and forth. The bottom of the button head is provided with a driving rod that penetrates into the relay housing. The driving rod is located on one side of the contact fixing block and is arranged in an abutting fit.

2. A relay with a test button according to claim 1, characterized in that: Sliding blocks are respectively provided on both sides of the button head, and sliding grooves for sliding cooperation with the sliding blocks are respectively provided on both sides of the mounting groove. A limiting groove for engaging with the sliding block is provided on the upper side surface of the sliding groove away from one end of the movable contact.

3. A relay with a test button according to claim 2, characterized in that: Both sides of the bracket are respectively provided with protrusions, and both sides of the contact fixing block are respectively provided with sliding grooves that are slidably matched with the protrusions.

Images