Relay

Abstract

A relay comprises a coil rack, a shell, a coil wound on the coil rack, a movable contact piece, a static contact piece and an insertion piece. The coil frame comprises a winding reel, an upper mounting plate arranged at one end of the winding reel and a lower mounting plate arranged at the other end of the winding reel, the inserting piece comprises an inserting part, a winding part, a fixing part and a mounting part, the fixing part comprises a side baffle, an upper baffle arranged at the upper end of the side baffle and a lower baffle arranged at the lower end of the side baffle, and the inserting part is connected with the winding part. The upper baffle, the lower baffle and the side baffle define a mounting groove, a boss matched with the mounting groove is arranged on the side face of the upper mounting plate, steps are arranged on the periphery of the inner wall of the shell, and fool-proof protrusions are arranged at the bottom of the shell. According to the utility model, the assembly process is simpler.

Description

TECHNICAL FIELD

[0001] The utility model relates to a relay. BACKGROUND

[0002] The relay assembly for vehicle is composed of a magnetic circuit system, a contact system and a restoring mechanism, and is an important part in the automobile. The contact system of the relay mainly comprises a plug-in piece. The plug-in piece of the existing relay comprises a plug-in part and a winding part arranged at one end of the plug-in part. During installation, one end of the plug-in part is vertically inserted into a coil holder for fixation. Since the winding part intrudes into the winding area of the coil holder, the winding part needs to be bent by 90 degrees to avoid the winding area before winding, resulting in a complicated assembly process of the existing relay. SUMMARY

[0003] The utility model wants to solve the technical problem to provide a kind of relay, and assembly process is simpler.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows: a kind of relay, including coil holder, shell, coil being wound on coil holder, movable contact piece, static contact piece and plug-in piece;The coil holder includes winding drum, upper mounting plate being arranged at one end of winding drum and lower mounting plate being arranged at the other end of winding drum, the plug-in piece is fixed on the upper mounting plate, the static contact piece is arranged on the lower mounting plate and cooperates with the movable contact piece, the coil holder is arranged in the shell, and the upper mounting plate is tightly matched with the shell;The plug-in piece includes plug-in part, winding part, fixed part and installation part, the fixed part includes side baffle, upper baffle being arranged on the upper end of side baffle and lower baffle being arranged on the lower end of side baffle, the upper baffle, lower baffle and side baffle form installation slot, the side surface of the upper mounting plate is provided with the boss matched with the installation slot, the lower end of the plug-in part is connected with the upper baffle, one side of the side baffle is connected with one end of the installation part, the other end of the installation part is provided with insertion slot, and the winding part is connected with one end of the installation part provided with insertion slot;The inner wall of the shell is provided with step, and the bottom of the shell is provided with anti-stupid convex. The utility model principle: plug-in part is exposed outside relay, and is used for the electrical connection of relay and external equipment;Fixed part is used for fixing plug-in piece on one side of coil holder, during assembly, fixed part is inserted into installation from one side of coil holder, and is fixed by the cooperation of installation slot and boss on one side of coil holder;Since anti-stupid convex is additionally arranged on the bottom of shell, the concave-convex position of anti-stupid convex corresponds with lower mounting plate, plays anti-stupid role, and improves the accuracy of assembly;The inner wall of shell is provided with step, when coil holder is completely placed in shell, sealing glue needs to be filled on the surface of upper mounting plate, and the design of step can block sealing glue along the inner wall of shell into the inside of relay.

[0005] As an improvement, the coil holder is provided with a resistor between the two plug-in pieces, and the pins of the resistor are arranged in the insertion slot.

[0006] As an improvement, the plug-in part, the fixed part, the installation part and the winding part are integrally formed metal pieces.

[0007] As an improvement, the slot is U-shaped, and the open end of the slot is trumpet-shaped.

[0008] As an improvement, the winding part is L-shaped.

[0009] As an improvement, the bottom of one side of the upper mounting plate is provided with a clearance groove, the mounting part and the winding part extend into the clearance groove, and the resistor is arranged in the clearance groove.

[0010] As an improvement, the clearance groove is surrounded by an upper stop surface and a side stop surface, the left and right sides of the side stop surface are provided with inclined surfaces, and the mounting part and the winding part extend from the two sides of the clearance groove.

[0011] As an improvement, the pin of the resistor is perpendicular to the mounting part.

[0012] As an improvement, the outer side of the fixing part is flush with the surface of the upper mounting plate.

[0013] The utility model compared with prior art brings beneficial effect is:

[0014] The fixing part is used for fixing the insertion piece on one side of the coil holder, during assembly, the fixing part is inserted into the coil holder from one side, and is fixed by cooperation between the mounting groove and the boss on one side of the coil holder; the bottom of the shell is additionally provided with a foolproof convex part corresponding to the concave-convex position of the lower mounting plate, which plays a foolproof role and improves the assembly accuracy; the inner wall of the shell is provided with a step, when the coil holder is completely placed in the shell, the surface of the upper mounting plate needs to be filled with sealant, and the design of the step can block the sealant from entering the relay from the inner wall of the shell. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a sectional view of the relay.

[0016] Figure 2 It is a perspective view of the relay body.

[0017] Figure 3 It is a side view of the relay body.

[0018] Figure 4 It is a partially exploded view of the relay body.

[0019] Figure 5 It is a schematic view of the coil holder.

[0020] Figure 6 It is a schematic view of the inside of the shell. DETAILED DESCRIPTION

[0021] The utility model will be further described below in conjunction with the drawings of the specification.

[0022] As Figure 1 ,2 As shown in the figure, a relay includes a coil frame 2, a shell 4, a coil wound on the coil frame 2, a moving contact 5, a static contact 6 and a plug. The coil frame 2 includes a bobbin 24, an upper mounting plate 22 arranged at one end of the bobbin 24 and a lower mounting plate 23 arranged at the other end of the bobbin 24, and the bobbin 24, the upper mounting plate 22 and the lower mounting plate 23 are integrally injection molded. The coil is mounted on the bobbin 24, and the coil frame 2 is integrally mounted in the shell 4. The plug is fixed on the upper mounting plate 22, and two first plugs 1, two second plugs 7 and one third plug 8 are arranged in the embodiment, the two second plugs 7 are respectively connected with the two static contacts 6, and the two static contacts 6 are fixed on the lower mounting plate 23 and are arranged in an up-down distribution, and the third plug 8 is connected with the moving contact 5.

[0023] As shown in the figure, Figures 2 to 4 The first plug 1 includes a plug-in part 11, a winding part 14, a fixing part 12 and a mounting part 13, and the plug-in part 11, the fixing part 12, the mounting part 13 and the winding part 14 are integrally formed metal parts. The plug 1 is used for being fixed on the upper mounting plate 22 at one end of the coil frame 2, and the upper mounting plate 22 cooperates with the shell 4 to protect the coil frame 2, and one side of the upper mounting plate 22 is provided with a boss 21. The plug-in part 11 is exposed outside the upper mounting plate 22 and is used for being electrically connected with external equipment, and the plug-in part 11 is in the form of a sheet. The fixing part 12 includes a side baffle, an upper baffle arranged at the upper end of the side baffle and a lower baffle arranged at the lower end of the side baffle, the upper baffle, the lower baffle and the side baffle surround a mounting groove, the mounting groove cooperates with the boss 21 on the upper mounting plate 22, the lower end of the plug-in part 11 is connected with the upper baffle, and one side of the side baffle is connected with one end of the mounting part 13. The mounting part 13 is in the form of a sheet, one end of the mounting part 13 is connected with the side baffle through an L-shaped part, the mounting part 13 is in the same plane with the plug-in part 11, the other end of the mounting part 13 is provided with a plug-in groove 131, two mounting parts 13 are provided with one resistor 3 in the embodiment, the pins at two ends of the resistor 3 are respectively arranged in the plug-in groove 131 of the mounting part 13, and the pins of the resistor 3 are perpendicular to the mounting part; the plug-in groove 131 is in the form of U, the opening end of the plug-in groove 131 is in the form of a horn, which facilitates the pins of the resistor 3 to be arranged, and improves the assembly speed; the bottom of the mounting part 13 is provided with a limiting table, and the limiting table cooperates with the coil frame 2 to limit. The winding part 14 is connected with one end of the mounting part 13 provided with the plug-in groove 131, the winding part 14 is arranged at the lower position of one end of the mounting part 13, the winding part 14 is in the form of L, the winding part 14 does not invade the winding area of the coil frame 2, and after the automatic winding of the coil frame 2 is completed, the winding of the coil wire end in the winding part 14 can be realized.

[0024] As shown in the figure, Figure 5As shown, the bottom of the upper mounting plate 22 is provided with a clearance groove 25, the mounting portions 13 and the winding portion 14 extend into the clearance groove 25, the resistor 3 is arranged in the clearance groove 25 and between the two mounting portions 13, the whole structure is compact and can accommodate the resistor 3. The clearance groove 25 is surrounded by an upper stop surface and a side stop surface, the left and right sides of the side stop surface are provided with inclined surfaces 26, the mounting portions 13 and the winding portion 14 extend from the two sides of the clearance groove 25, the design of the inclined surfaces 26 can increase the space on the two sides of the clearance groove 25, facilitating the winding operation at the winding portion.

[0025] As shown in Figure 1 , the inner wall of the shell 4 is provided with a step 41 around, when the coil holder is completely placed in the shell 4, the surface of the upper mounting plate 22 needs to be filled with sealant, the design of the step 41 can block the sealant from entering the relay inside along the inner wall of the shell 4. As shown in Figure 6 , the bottom of the shell 4 is provided with a foolproof convex 42 corresponding to the concave convex position of the lower mounting plate, which plays a foolproof role and improves the assembly accuracy.

Claims

1. A relay comprising a coil frame, a housing, a coil wound on the coil frame, a movable contact, a stationary contact and an insert; the coil frame comprises a bobbin, an upper mounting plate arranged at one end of the bobbin and a lower mounting plate arranged at the other end of the bobbin, the insert is fixed on the upper mounting plate, the stationary contact is arranged on the lower mounting plate and cooperates with the movable contact, the coil frame is arranged in the housing, and the upper mounting plate is tightly fitted with the housing; characterized in that: The plug-in piece comprises a plug-in part, a winding part, a fixing part and a mounting part, the fixing part comprises a side baffle, an upper baffle arranged at the upper end of the side baffle and a lower baffle arranged at the lower end of the side baffle, the upper baffle, the lower baffle and the side baffle enclose a mounting groove, the side surface of the upper mounting plate is provided with a boss matched with the mounting groove, the lower end of the plug-in part is connected with the upper baffle, one side of the side baffle is connected with one end of the mounting part, the other end of the mounting part is provided with a plug-in groove, and the winding part is connected with the end of the mounting part provided with the plug-in groove; a step is arranged around the inner wall of the shell, and a foolproof convex is arranged at the bottom of the shell. ​ 2. A relay according to claim 1, characterized in that: The coil holder is provided with a resistor between two plug-in pieces, and the pins of the resistor are arranged in the plug-in groove.

3. A relay according to claim 1, characterized in that: The plug-in part, the fixing part, the mounting part and the winding part are integrally formed metal parts.

4. A relay according to claim 1, characterized in that: The plug-in groove is in U shape, and the opening end of the plug-in groove is in horn shape.

5. A relay according to claim 1, characterized in that: The winding part is in L shape.

6. A relay according to claim 2, characterized in that: The bottom of one side of the upper mounting plate is provided with an avoiding groove, the mounting part and the winding part extend into the avoiding groove, and the resistor is arranged in the avoiding groove.

7. A relay according to claim 6, characterized in that: The avoiding groove is enclosed by an upper baffle surface and a side baffle surface, the left and right sides of the side baffle surface are provided with inclined surfaces, and the mounting part and the winding part extend from the two sides of the avoiding groove.

8. A relay according to claim 2, characterized in that: The pins of the resistor are perpendicular to the mounting part.

9. A relay according to claim 1, characterized in that: The outer side of the fixing part is flush with the surface of the upper mounting plate.

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