Balance force electromagnetic relay general assembly welding fixture

Abstract

The utility model provides a balance force electromagnetic relay general assembly welding fixture which comprises a positioning block, a tensioning screw and a magnetic circuit part, an adjusting block is arranged in the positioning block, the positioning block is connected with a baffle, the positioning block is connected with a lower electrode and is positioned through a pin, and the tensioning screw is connected with a sliding block through a baffle block; according to the utility model, the clamp is used for welding the balance force electromagnetic relay assembly, and the position of the contact spring can be adjusted during welding, so that the central plane of the contact spring is horizontal; meanwhile, the pressing degree of the support and the bottom plate can be adjusted, contact gaps are made to be consistent, the problems that after welding, the counter-acting force of the contact spring to the shaft is large, and the consistency of the contact gaps is poor are effectively solved, and therefore the use reliability of products is improved.

Description

Technical Field

[0001] The utility model relates to an assembly welding fixture for a balanced force electromagnetic relay. Background Art

[0002] With the increasing demand for balanced force electromagnetic relays by domestic aerospace users in recent years, users have higher and higher requirements for the reliability of such relays. The assembly welding of balanced force electromagnetic relays generally relies on manual positioning or simple fixture positioning welding. After welding, the position of the contact spring is biased to the left or right, and the center plane of the contact spring is not horizontal. During the attraction or release of the balanced force electromagnetic relay, the contact spring in the skewed state greatly enhances the force on the armature part, resulting in an increase in the reaction force of the contact spring on the shaft, increasing the friction and wear between the shaft and the shaft frame, and increasing the probability of the armature part getting stuck, thereby reducing the reliability of the use of the balanced force electromagnetic relay. Relying on manual positioning or simple fixture positioning welding can easily lead to inconsistent compression between the bracket and the base plate, making the contact gap inconsistent, resulting in inconsistent mechanical and electrical parameters of the product, thus affecting the reliability of the product.

[0003] The Chinese patent with publication number CN209095001U discloses a simple fixture for CNC machine tools, including a base, a fixed plate, a workpiece and a fixture device, wherein the fixed plate and the workpiece are placed on the upper part of the base, the bottom of the fixed plate is welded and fixed to the surface of the base, a fixed rod and a screw are arranged between the fixture device and the fixed plate, a rocker is arranged on the right side of the fixed plate, and the screw is connected to the inner screw of the rocker; an iron plate and an electromagnetic relay are arranged inside the base, the electromagnetic relay is embedded and fixed to the bottom of the base, the iron plate is horizontally placed on the upper part of the electromagnetic relay, the bottom of the iron plate is fixed to the electromagnetic relay by bolts, and the iron plate is slidably connected to the inner side of the groove; however, the fixture is too simple to meet the positioning requirements of the electromagnetic relay, and it is easy to cause wear and consumption in a skewed state. However, this application improves the existing assembly process to ensure that the center plane of the contact spring of the balancing force electromagnetic relay is horizontal, so as to reduce the force of the contact spring on the shaft, thereby reducing the friction between the shaft and the shaft frame and the degree of wear. At the same time, the consistency of the contact gap of the balancing force electromagnetic relay can be improved by the fixture, thereby improving the reliability of the product. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a balanced force electromagnetic relay assembly welding fixture, which solves the problems of uneven center plane of the contact spring, increased friction and wear between the shaft and the shaft frame, improves the consistency of the contact gap of the balanced force electromagnetic relay, and thus improves the reliability of the product.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides a welding fixture for assembling a balanced force electromagnetic relay, comprising a positioning block, a tightening screw and a magnetic circuit part, wherein an adjustment block is arranged inside the positioning block, the positioning block is connected to a baffle, the positioning block is connected to a lower electrode and positioned by a pin, the tightening screw is connected to a sliding block by the baffle, and a bracket is arranged on the magnetic circuit part.

[0007] Preferably, a groove is provided in the adjusting block, and adjusting screws are provided at both ends of the adjusting block.

[0008] Preferably, the baffle is fixed to the positioning block by countersunk screws.

[0009] Preferably, a tightening screw is provided on one side of the positioning block.

[0010] Preferably, sliding rods are provided at both ends of the stopper and are fixed to the positioning block by hexagon socket screws.

[0011] Preferably, the bottom of the magnetic circuit part is connected to the shaft frame and the shaft, the shaft is connected to the contact spring, and the contact spring is connected to the armature part.

[0012] Preferably, the magnetic circuit part is connected to the base part by tightening screws, and a bottom plate is arranged on the base part.

[0013] The beneficial effect of the utility model is that the clamp is used to weld the assembly of the balanced force electromagnetic relay, and the position of the contact spring can be adjusted during welding to make its center plane horizontal; at the same time, the degree of compression between the bracket and the base plate can be adjusted to make the contact gap consistent, effectively solving the problem of large reaction force of the contact spring on the shaft and poor consistency of the contact gap after welding, thereby improving the reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the fixture structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the fixture structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the adjustment block of the utility model;

[0017] Figure 4 It is a schematic diagram of the armature sliding block structure of the utility model;

[0018] Figure 5 It is a schematic diagram of the block structure of the utility model;

[0019] Figure 6 It is a schematic diagram of the tension screw structure of the utility model;

[0020] Figure 7This is a sectional view of the general assembly and clamping of the balanced force electromagnetic relay of the utility model;

[0021] In the figure: 1-adjusting block, 2-baffle, 3-countersunk screw, 4-positioning block, 5-pin, 6-lower electrode, 7-adjusting screw, 8-tensioning screw, 9-baffle, 10-sliding block, 11-hexagon socket screw, 12-tightening screw, 13-magnetic circuit part, 14-axle frame, 15-axle, 16-contact spring, 17-bottom plate, 18-armature part, 19-bracket, 20-base part. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0023] like Figure 1-7 As shown,

[0024] A welding fixture for assembling a balanced force electromagnetic relay, comprising a positioning block 4, a tightening screw 8 and a magnetic circuit portion 13, wherein an adjustment block 1 is arranged inside the positioning block 4, a baffle 2 is connected to the positioning block 4 through a countersunk screw 3, the positioning block 4 is connected to a lower electrode 6 and positioned through a pin 5, the tightening screw 8 is connected to a sliding block 10 through a baffle 9, and a bracket 19 is arranged on the magnetic circuit portion 13;

[0025] The tensioning screw 8 is provided with a slide and cooperates with the slide on the sliding block. When the tensioning screw is pushed downward, the end of the tensioning screw presses against the sliding block, so that the sliding block moves downward, and then pushes the magnetic circuit part and the base part to be pressed. When the tensioning screw is pushed upward, the slide of the tensioning screw drives the sliding block to move upward, thereby loosening the magnetic circuit part; both ends of the sliding block 10 are provided with slide grooves, and the slide grooves are matched with the sliding rod, so that the sliding block can move up and down along the sliding rod.

[0026] A groove is provided in the adjusting block 1 for positioning the base part. Adjusting screws 7 are provided at both ends of the adjusting block 1. The ends of the adjusting screws are pressed against the adjusting block. By adjusting the adjusting screws, the adjusting block can be moved left and right, thereby driving the base part to move left and right. The position of the contact spring can be adjusted by the adjusting block so that the center plane of the contact spring is kept in a horizontal state, which can effectively reduce the force of the contact spring on the shaft, thereby reducing the friction and wear between the shaft and the shaft frame.

[0027] The baffle 2 is fixed on the positioning block 4 by the countersunk screw 3 to limit the outward movement of the adjustment block. The positioning block is placed on the lower electrode 6 and positioned by the pin 5, and then the balance force electromagnetic relay can be assembled and welded.

[0028] A tightening screw 12 is provided on one side of the positioning block 4, which can fix the magnetic circuit part in the positioning block. When the adjustment block is pushed, the magnetic circuit part is fixed by the tightening screw, and the base part moves left and right, which can drive the center plane of the contact spring installed in the respective slots of the base part and the magnetic circuit part to change. When the center plane of the contact spring is just horizontal, stop pushing the adjusting screw, and then weld the magnetic circuit part to the base part.

[0029] Both ends of the stopper 9 are provided with slide bars and are fixed to the positioning block 4 by hexagon socket screws 11. Both ends of the sliding block 10 are provided with slide grooves. The slide grooves are matched with the slide bars, and the sliding block can move up and down along the slide bars.

[0030] The bottom of the magnetic circuit part 13 is connected to the shaft frame 14 and the shaft 15 , the shaft 15 is connected to the contact spring 16 , and the contact spring 16 is connected to the armature part 18 .

[0031] The magnetic circuit part 13 is pressed against the base part 20 by tightening screws 8 so that there is no visible gap between the fitting surfaces of the bracket and the bottom plate, thereby ensuring the consistency of the relay contact gap. A bottom plate 17 is arranged on the base part 20 .

[0032] In summary, the clamp can adjust the position of the contact spring through the adjustment block so that the center plane of the contact spring remains in a horizontal state, which can effectively reduce the force of the contact spring on the shaft, thereby reducing the friction and wear between the shaft and the shaft frame, thereby improving the reliability of the product; the clamp can press the magnetic circuit part and the base part of the electromagnetic relay by tightening the screws, so that there is no visible gap between the fitting surface of the bracket and the bottom plate, thereby ensuring the consistency of the relay contact gap, thereby improving the reliability of the product.

Claims

1. A welding fixture for assembling a balanced electromagnetic relay, characterized in that: The invention comprises a positioning block (4), a tightening screw (8) and a magnetic circuit part (13); an adjusting block (1) is arranged inside the positioning block (4); the positioning block (4) is connected to a baffle (2); the positioning block (4) is connected to a lower electrode (6) and is positioned by a pin (5); the tightening screw (8) is connected to a sliding block (10) by a baffle (9); and a bracket (19) is arranged on the magnetic circuit part (13).

2. A welding fixture for assembling a balanced force electromagnetic relay as claimed in claim 1, characterized in that: A groove is arranged in the adjustment block (1), and adjustment screws (7) are arranged at both ends of the adjustment block (1).

3. A welding fixture for assembling a balanced force electromagnetic relay as claimed in claim 1, characterized in that: The baffle (2) is fixed to the positioning block (4) by means of countersunk screws (3).

4. A welding fixture for assembling a balanced force electromagnetic relay as claimed in claim 1, characterized in that: A tightening screw (12) is provided on one side of the positioning block (4).

5. A welding fixture for assembling a balanced force electromagnetic relay as claimed in claim 1, characterized in that: Sliding rods are provided at both ends of the stopper (9) and are fixed to the positioning block (4) via hexagon socket screws (11).

6. A welding fixture for assembling a balanced force electromagnetic relay as claimed in claim 1, characterized in that: The bottom of the magnetic circuit part (13) is connected to a shaft frame (14) and a shaft (15), the shaft (15) is connected to a contact spring (16), and the contact spring (16) is connected to an armature part (18).

7. A welding fixture for assembling a balanced force electromagnetic relay as claimed in claim 1, characterized in that: The magnetic circuit part (13) is connected to the base part (20) via a tightening screw (8), and a bottom plate (17) is arranged on the base part (20).

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