Clamp spring limiting device of relay socket and relay socket

Abstract

The clamping spring limiting device of the relay socket comprises a shell and a clamping spring, the shell is provided with a mounting groove, one side of the mounting groove in the height direction is provided with an insertion port, and the other side of the mounting groove in the height direction is provided with a through groove; the clamping spring is positioned in the mounting groove and is provided with two clamping plates, one ends of the two clamping plates are relatively close to each other or are in contact to serve as an insertion end, the insertion end is positioned at the insertion port, and one end of one clamping plate far away from the insertion end is provided with a lead-out pin penetrating through the through groove; the clamping spring is further provided with a connecting plate connected between the two clamping plates, and the connecting plate is provided with a first fixing part. A second fixing part is arranged on the side wall, opposite to the connecting plate, of the mounting groove, and the connecting plate and the mounting groove are fixedly connected through fixed connection of the first fixing part and the second fixing part. According to the utility model, the clamping spring can be ensured not to deviate during assembly and welding, and poor welding or poor contact caused by uneven stress of a welding spot during plugging and unplugging of a relay can be avoided at the same time.

Description

Technical Field

[0001] This utility model relates to the field of relay sockets, and in particular to a spring-loaded limiting device for a relay socket and a relay socket. Background Technology

[0002] A relay is an "automatic switch" that uses a small current to control a large current, playing a role in automatic adjustment, safety protection, and circuit switching in circuits. Relays are usually used in conjunction with relay sockets. A relay socket generally consists of a housing 1, a circuit board 2, and several spring clips 3 for inserting the relay leads, etc.

[0003] See Figure 1 and Figure 2 In existing relay sockets, the housing 1 has a mounting groove 4, and the spring clip 3 is placed in the mounting groove 4 with a clearance fit. The lead 5 of the spring clip 3 is soldered to the circuit board 2. With this structure, during the soldering process of the lead 5 of the spring clip 3 to the circuit board 2, the soldering iron tip can easily lift the spring clip 3, causing it to shift, resulting in poor solder joints or failure to achieve automatic soldering. In addition, during relay insertion and removal operations, the mechanical stress acting on the spring clip 3 is directly transmitted to the solder joint, which can easily lead to uneven stress on the solder joint. After long-term use, this can easily cause problems such as solder pad detachment and copper foil peeling from the circuit board, resulting in poor contact and reliability issues. Utility Model Content

[0004] The main purpose of this utility model is to overcome the problems of welding displacement caused by the gap between the clamping spring and the mounting groove in the prior art, as well as the defects of poor contact caused by uneven stress distribution at the welding point when the relay is plugged in and out. The present invention proposes a clamping spring limiting device and a relay socket to ensure that there is no offset during the assembly and welding of the clamping spring, and also to avoid poor welding or poor contact caused by uneven stress at the welding point when the relay is plugged in and out.

[0005] The present invention adopts the following technical solution:

[0006] A spring-loaded limiting device for a relay socket includes a housing and a spring. The housing has a mounting groove, with an insertion port on one side of the mounting groove in the height direction and a through groove on the other side in the height direction. The spring is located within the mounting groove and has two clamping plates. One end of each clamping plate is close to or in contact with the other end to serve as an insertion end, located at the insertion port. One end of one clamping plate, away from the insertion end, has a lead-out foot that passes through the through groove. The spring also has a connecting plate connecting the two clamping plates, with a first fixing part. A second fixing part is provided on the side wall of the mounting groove opposite to the connecting plate. The connecting plate is fixedly connected to the mounting groove by the first fixing part and the second fixing part.

[0007] The first fixing part is a protrusion, and the second fixing part is a mounting hole; or the first fixing part is a mounting hole, and the second fixing part is a protrusion.

[0008] The two clamps are arranged along the length of the mounting groove, and the clamps are opposite to the sidewalls of the mounting groove in the length direction; the connecting plate is located on one side of the mounting groove in the width direction; the end of the clamp without the lead-out foot that is away from the insertion end and / or the connecting plate abuts against the sidewall of the mounting groove opposite to the insertion port.

[0009] The through groove passes through the mounting groove and is located on the side where the lead-out foot is located in the length direction of the mounting groove; the through groove extends along the width direction of the mounting groove, and protrusions are respectively provided on the two opposite side walls of the through groove, and the lead-out foot of the clamp plate passes between the two protrusions.

[0010] The through groove has an opening on one side of the mounting groove in the width direction for the clamping plate to be inserted; the protrusion extends along the width direction of the mounting groove, and the thickness of the protrusion near the opening of the through groove is less than the thickness of the protrusion away from the opening.

[0011] A relay socket includes a first lead-out spring clamping group and a second lead-out spring clamping group; it also includes a spring clamping limiting device for the relay socket, wherein the first lead-out spring clamping group and the second lead-out spring clamping group are respectively provided with a plurality of the spring clamps; the housing is provided with a first mounting groove group and a second mounting groove group to respectively install a plurality of the spring clamps of the first lead-out spring clamping group and a plurality of the spring clamps of the second lead-out spring clamping group.

[0012] It also includes a first circuit board group, a second circuit board group, an input group, and an output group; the first lead-out spring group and the input group are electrically connected to the first circuit board group, and the second lead-out spring group and the output group are electrically connected to the second circuit board group; the housing is also provided with a third mounting slot group and a fourth mounting slot group for mounting the input group and the output group, respectively.

[0013] The housing includes a plate and an outer shell. The first circuit board group and the second circuit board group are fixed to the plate. The outer shell is detachably fixedly covered on the outer periphery of the plate and forms with it the first mounting groove group, the second mounting groove group, the third mounting groove group and the fourth mounting groove group. The third mounting groove group and the first mounting groove group are located on the outer periphery of the first circuit board group. The second mounting groove group and the fourth mounting groove group are located on the outer periphery of the second circuit board group.

[0014] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:

[0015] 1. In this utility model, a first fixing part and a second fixing part are respectively provided on the connecting plate of the clamping spring and the mounting groove of the housing. The clamping spring is fixedly positioned in the mounting groove through the fixed cooperation of the first fixing part and the second fixing part, which ensures the alignment between the insertion end of the clamping spring and the insertion port of the housing, and also makes the lead-out foot form an anti-displacement constraint in the through groove, effectively avoiding the direct impact of welding offset and insertion and extraction stress on the weld point, thereby improving the efficiency of automated assembly and welding reliability.

[0016] 2. In this utility model, the first fixing part and the second fixing part adopt an interference fit between the protrusion and the mounting hole to achieve the fixing and limiting of the clamping spring and the mounting groove, which not only ensures the assembly accuracy of the clamping spring, but also eliminates the displacement deviation caused by insertion and extraction stress.

[0017] 3. In this utility model, the two clamping plates are arranged along the length direction of the mounting groove, and the clamping plates are opposite to the side walls of the mounting groove in the length direction; the connecting plate is located on one side of the mounting groove in the width direction; the end of the clamping plate without the lead-out foot away from the insertion end and / or the connecting plate abuts against the side wall of the mounting groove opposite to the insertion port. This arrangement makes the clamping plates and the mounting groove form multi-dimensional limiting constraints in the length and width directions, thereby improving the installation and positioning stability of the clamping spring.

[0018] 4. In this utility model, the through groove passes through the mounting groove and is located on the side where the lead-out foot is located in the length direction of the mounting groove; the through groove extends along the width direction of the mounting groove, and protrusions are respectively provided on the two opposite side walls of the through groove. The lead-out foot of the clamping plate passes between the two protrusions. The protrusions and the lead-out foot are tightly fitted to limit the lead-out foot and further prevent the clamping spring from deviating.

[0019] 5. In this utility model, the protrusion adopts a gradient thickness design. The protrusion is thinner on the side of the opening of the through groove, which plays a guiding role and makes it easier to insert the lead-out foot. The protrusion is thicker on the side away from the opening to provide a more secure clamping. Attached Figure Description

[0020] Figure 1 A cross-sectional view of the mounting slot of an existing clamping spring installed in the housing;

[0021] Figure 2 A schematic diagram of the existing clamping spring and mounting slot assembly;

[0022] Figure 3 The structure of the relay socket of this utility model Figure 1 ;

[0023] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0024] Figure 5 This is a perspective view of the clamping spring of this utility model;

[0025] Figure 6 The structure of the relay socket of this utility model Figure 2 ;

[0026] Figure 7 for Figure 6 A magnified view of a portion of the image;

[0027] Figure 8 The structure of the relay socket of this utility model Figure 3 ;

[0028] Figure 9 for Figure 8 A magnified view of a portion of the image;

[0029] Figure 10 This is an overall diagram of the relay assembly of this utility model.

[0030] in:

[0031] 10. Housing; 11. Plate; 12. Outer shell; 13. Mounting slot; 13a. First mounting slot group; 13b. Second mounting slot group; 15. Third mounting slot group; 15a. Third mounting slot; 16. Fourth mounting slot group; 16a. Fourth mounting slot; 17. Second fixing part; 18. Insertion port; 19. Through slot; 19a. Opening; 19b. Protrusion; 20a. First lead-out foot clamping spring group; 20b. Second lead-out foot clamping spring group; 21. Clamping spring; 22. Clamping plate; 23. Insertion end; 24. Lead-out foot; 25. Connecting plate; 26. First fixing part; 30. Input group; 31. Input clamping spring; 40. Output group; 41. Output clamping spring; 50. First circuit board group; 60. Second circuit board group.

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Detailed Implementation

[0033] The present invention will be further described below through specific embodiments.

[0034] See Figures 3-9A spring-loaded limiting device for a relay socket includes a housing 10 and a spring 21. The housing 10 has a mounting groove 13, with an insertion port 18 on one side of the mounting groove 13 in the height direction and a through groove 19 on the other side of the mounting groove 13 in the height direction. The spring 21 is located in the mounting groove 13 and has two clamping plates 22. One end of the two clamping plates 22 is close to or in contact with each other to serve as an insertion end 23. The insertion end 23 is located at and opposite to the insertion port 18. The clamping plates 22 have a preset elastic tension in the free state, generating a clamping force when the relay lead is inserted. The other ends of the two clamping plates 22, i.e., the ends away from the insertion end 23, are spaced apart, and one end of one clamping plate 22 has a lead 24 that passes through the through groove 19. The spring 21 also has a connecting plate 25 connecting the two clamping plates 22, and the connecting plate 25 has a first fixing part 26. The mounting groove 13 has a second fixing part 17 on its side wall opposite to the connecting plate 25. The connecting plate 25 and the mounting groove 13 are fixedly connected by the first fixing part 26 and the second fixing part 17.

[0035] In this utility model, the clamping spring 21 is fixedly positioned in the mounting groove 13 by the fixed cooperation of the first fixing part 26 and the second fixing part 17. This ensures the alignment between the insertion end 23 of the clamping spring 21 and the insertion port 18 of the housing 10, and also makes the lead-out foot 24 form an anti-displacement constraint in the through groove 19, effectively avoiding the direct impact of welding offset and insertion and extraction stress on the weld point, thereby improving the efficiency of automated assembly and welding reliability.

[0036] The first fixing part 26 is a protrusion, and the second fixing part 17 is a mounting hole; or the first fixing part 26 is a mounting hole, and the second fixing part 17 is a protrusion. The protrusion can be cylindrical or hemispherical, etc., and the shape of the mounting hole can be adapted to the shape of the protrusion. The protrusion and the mounting hole can be fixed and limited by an interference fit, such as by riveting, which ensures the assembly accuracy of the clamping spring 21 and eliminates the displacement deviation caused by insertion and extraction stress. In practical applications, the first fixing part 26 and the second fixing part 17 can also be fixed by other common methods.

[0037] In this embodiment, the two clamping plates 22 of the clamping spring 21 are arranged along the length direction of the mounting groove 13, and the clamping plates 22 are opposite to the side wall of the mounting groove 13 in the length direction, with a gap between the clamping plates 22 and the side wall. The clamping plates 22 are also perpendicular to the side where the second fixing part 17 is located on the mounting groove 13. The connecting plate 25 is located on one side in the width direction of the mounting groove 13, and the connecting plate 25 is perpendicularly connected to the clamping plates 22. The end of the clamping plate 22 without the lead-out foot 24 away from the insertion end 23 and / or the connecting plate 25 abut against the side wall of the mounting groove 13 opposite to the insertion port 18. This arrangement forms a multi-dimensional limiting constraint between the clamping plates 22 and the mounting groove 13 in the length and width directions, thereby improving the installation and positioning stability of the clamping spring 21.

[0038] The through groove 19 extends through the mounting groove 13 and is located on the side where the lead-out foot 24 is located along the length of the mounting groove 13. The through groove 19 extends along the width of the mounting groove 13, facilitating the complete insertion of the lead-out foot 24 of the clamping plate 22. Two protrusions 19b are respectively provided on opposite sidewalls of the through groove 19, and the lead-out foot 24 of the clamping plate 22 passes between the two protrusions 19b, with a tight fit between the protrusions 19b and the lead-out foot 24. The protrusions 19b and the through groove 19 limit the lead-out foot 24, further preventing the clamping spring 21 from shifting. The through groove 19 has an opening 19a on one side along the width of the mounting groove 13, facilitating the quick insertion of the lead-out foot 24 into the through groove 19 from the opening 19a side. The protrusion 19b extends along the width of the mounting groove 13, and the thickness of the protrusion 19b near the opening 19a is less than the thickness of the protrusion 19b away from the opening 19a. The protrusion 19b features a gradient thickness design. The protrusion 19b is thinner on the side of the opening 19a, which serves as a guide and makes it easier to insert the lead 24. The protrusion 19b is thicker on the side away from the opening 19a, which provides a more secure clamping.

[0039] Based on this, see Figures 3-10 This utility model also proposes a relay socket, including a first lead-out spring clamping assembly 20a, a second lead-out spring clamping assembly 20b, and the aforementioned spring clamping limiting device for a relay socket. The first lead-out spring clamping assembly 20a and the second lead-out spring clamping assembly 20b are each provided with a plurality of spring clamps 21. A first mounting groove assembly 13a and a second mounting groove assembly 13b are provided within the housing 10. The first mounting groove assembly 13a is provided with a plurality of mounting grooves 13 to respectively install the plurality of spring clamps 21 of the first lead-out spring clamping assembly 20a; the second mounting groove assembly 13b is provided with a plurality of mounting grooves 13 to respectively install the plurality of spring clamps 21 of the second lead-out spring clamping assembly 20b. The spring clamps 21 of the first lead-out spring clamping assembly 20a and the second lead-out spring clamping assembly 20b are the spring clamps 21 of the aforementioned spring clamping limiting device for a relay socket, and the mounting grooves 13 of the first mounting groove assembly 13a and the second mounting groove assembly 13b are the mounting grooves 13 of the aforementioned spring clamping limiting device for a relay socket.

[0040] Furthermore, it also includes a first circuit board group 50, a second circuit board group 60, an input group 30, and an output group 40. The first lead-out spring clamp group 20a and the input group 30 are electrically connected to the first circuit board group 50. The first lead-out spring clamp group 20a is used for inserting the coil pins of the relay. The clamping spring 21 of the first lead-out spring clamp group 20a is electrically connected to the first circuit board group 50 by soldering. The second lead-out spring clamp group 20b and the output group 40 are electrically connected to the second circuit board group 60. The second lead-out spring clamp group 20b is used for inserting the contact pins of the relay's contact system. The clamping spring 21 of the second lead-out spring clamp group 20b is electrically connected to the second circuit board group 60 by soldering.

[0041] The housing 10 is also provided with a third mounting slot group 15 and a fourth mounting slot group 16 for mounting the input group 30 and the output group 40, respectively. The input group 30 includes a plurality of input clamping springs 31, and the output group 40 includes a plurality of output clamping springs 41. The third mounting slot group 15 and the fourth mounting slot group 16 are respectively provided with a plurality of third mounting slots 15a and a plurality of fourth mounting slots 16a. The plurality of third mounting slots 15a are used to mount a plurality of input clamping springs 31, and the plurality of fourth mounting slots 16a are used to mount a plurality of output clamping springs 41.

[0042] The housing 10 includes a plate 11 and an outer shell 12. A first circuit board assembly 50 and a second circuit board assembly 60 are fixed to the plate 11. The outer shell 12 is detachably fixed to the outer periphery of the plate 11 and forms with it a first mounting groove assembly 13a, a second mounting groove assembly 13b, a third mounting groove assembly 15, and a fourth mounting groove assembly 16. The third mounting groove assembly 15 and the first mounting groove assembly 13a are located on the outer periphery of the first circuit board assembly 50. The second mounting groove assembly 13b and the fourth mounting groove assembly 16 are located on the outer periphery of the second circuit board assembly 60. In addition, each of the first mounting slot group 13a, the second mounting slot group 13b, the third mounting slot group 15 and the fourth mounting slot group 16 has an opening on one side in the width direction to facilitate the installation of the corresponding first lead-out spring group 20a, the second lead-out spring group 20b, the input group 30 and the output group 40. After being soldered to the first circuit board group 50 and the second circuit board group 60, the outer shell 12 is then placed over the board body 11 to close the openings of each mounting slot and the opening of the through slot 19.

[0043] In this utility model, the terms "first," "second," and "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. The use of terms such as "upper," "lower," "left," "right," "front," and "rear" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model, and does not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the scope of protection of this utility model. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0045] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A spring-loaded limiting device for a relay socket, comprising a housing and a spring, wherein the housing is provided with a mounting groove, an insertion port is provided on one side of the mounting groove in the height direction, and a through groove is provided on the other side of the mounting groove in the height direction; the spring is located in the mounting groove and is provided with two clamping plates, one end of the two clamping plates being close to or in contact with each other to serve as an insertion end, the insertion end being located at the insertion port, wherein a lead-out foot is provided on the end of one of the clamping plates away from the insertion end, the lead-out foot passing through the through groove; characterized in that: The clamping spring is further provided with a connecting plate connecting the two clamping plates. The connecting plate is provided with a first fixing part. The side wall of the mounting groove opposite to the connecting plate is provided with a second fixing part. The connecting plate and the mounting groove are fixedly connected by the first fixing part and the second fixing part.

2. The spring-loaded limiting device for a relay socket as described in claim 1, characterized in that: The first fixing part is a protrusion, and the second fixing part is a mounting hole; or the first fixing part is a mounting hole, and the second fixing part is a protrusion.

3. The spring-loaded limiting device for a relay socket as described in claim 1, characterized in that: The two clamps are arranged along the length of the mounting groove, and the clamps are opposite to the sidewalls of the mounting groove in the length direction; the connecting plate is located on one side of the mounting groove in the width direction; the end of the clamp without the lead-out foot that is away from the insertion end and / or the connecting plate abuts against the sidewall of the mounting groove opposite to the insertion port.

4. The spring-loaded limiting device for a relay socket as described in claim 1, characterized in that: The through groove passes through the mounting groove and is located on the side where the lead-out foot is located in the length direction of the mounting groove; the through groove extends along the width direction of the mounting groove, and protrusions are respectively provided on the two opposite side walls of the through groove, and the lead-out foot of the clamp plate passes between the two protrusions.

5. The spring-loaded limiting device for a relay socket as described in claim 4, characterized in that: The through groove has an opening on one side of the mounting groove in the width direction for the clamping plate to be inserted; the protrusion extends along the width direction of the mounting groove, and the thickness of the protrusion near the opening of the through groove is less than the thickness of the protrusion away from the opening.

6. A relay socket, comprising a first lead-out spring assembly and a second lead-out spring assembly; characterized in that: It also includes a spring-clamping limiting device for a relay socket according to any one of claims 1 to 5, wherein the first lead-out spring clamping group and the second lead-out spring clamping group are respectively provided with a plurality of the springs; the housing is provided with a first mounting groove group and a second mounting groove group to respectively install a plurality of the springs of the first lead-out spring clamping group and a plurality of the springs of the second lead-out spring clamping group.

7. A relay socket as described in claim 6, characterized in that: It also includes a first circuit board group, a second circuit board group, an input group, and an output group; the first lead-out spring group and the input group are electrically connected to the first circuit board group, and the second lead-out spring group and the output group are electrically connected to the second circuit board group; the housing is also provided with a third mounting slot group and a fourth mounting slot group for mounting the input group and the output group, respectively.

8. A relay socket as described in claim 7, characterized in that: The housing includes a plate and an outer shell. The first circuit board group and the second circuit board group are fixed to the plate. The outer shell is detachably fixedly covered on the outer periphery of the plate and forms with it the first mounting groove group, the second mounting groove group, the third mounting groove group and the fourth mounting groove group. The third mounting groove group and the first mounting groove group are located on the outer periphery of the first circuit board group. The second mounting groove group and the fourth mounting groove group are located on the outer periphery of the second circuit board group.

Images