A relay module with potentiometer

Abstract

This utility model discloses a relay module with potentiometers, including a housing and a PCB board disposed within the housing. The PCB board is connected to at least one first potentiometer and at least one second potentiometer with adjustment axes parallel to each other. The first potentiometer has a first knob, and the second potentiometer has a second knob. The housing has clearance holes corresponding to the operating ends of the first and second knobs. The module also includes a limiting structure connected to the housing and / or the PCB board. This limiting structure at least axially limits the first knob to prevent it from displacing away from the clearance holes. This utility model can prevent the first knob from collapsing downwards when rotated, thereby improving operational reliability.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, and in particular to a relay module with a potentiometer. Background Technology

[0002] A time relay is an electrical component used in circuits with lower voltage or lower current to connect or disconnect circuits with higher voltage or higher current. It mainly consists of a printed circuit board (PCB), potentiometers, and a knob. The potentiometer is mounted on the PCB, and the time parameter is adjusted by rotating the knob. Currently, some time relays, in order to achieve miniaturization, arrange multiple potentiometers side-by-side and closely together. While this design saves space, it causes a height difference between adjacent potentiometers in the axial direction. When these potentiometers are adjusted using the same type of knob, the limiting structure of the knob on the lower potentiometer cannot effectively contact the potentiometer, causing the knob to easily collapse downwards during rotation. This not only affects the smoothness of operation but may also cause the knob to fall into the relay housing, making it impossible for tools to reach the knob's operating end, thus causing inconvenience to the user. Utility Model Content

[0003] This utility model addresses the technical problems existing in the prior art by providing a relay module with a potentiometer. By adding a limiting structure to axially limit the knob, it solves the problem of the knob collapsing during rotation.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a relay module with potentiometers, including a housing and a PCB board disposed in the housing, the PCB board being connected to at least one first potentiometer and at least one second potentiometer with adjustment axes parallel to each other, the first potentiometer having a first knob, the second potentiometer having a second knob, the housing having clearance through holes corresponding to the operating ends of the first knob and the second knob respectively; it also includes a limiting structure connected to the housing and / or the PCB board, the limiting structure at least axially limiting the first knob to prevent it from displacing away from the clearance through hole.

[0005] In a preferred embodiment, the limiting structure includes at least one first limiting member corresponding to the first knob.

[0006] In a preferred embodiment, the limiting structure further includes a second limiting member corresponding to the second knob, the second limiting member axially limiting the second knob to prevent it from displacing away from the clearance through hole.

[0007] In a preferred embodiment, the tail end of the first knob passes through the axially penetrating adjustment hole provided by the first potentiometer, and the tail end of the first knob abuts against the first limiting member.

[0008] In a preferred embodiment, the tail end of the second knob passes through the axially penetrating adjustment hole provided by the second potentiometer, and the tail end of the second knob abuts against the second limiting member.

[0009] In a preferred embodiment, the first knob and the second knob each include an adjusting rod and a limiting portion protruding from the outside of the adjusting rod. The adjusting rod of the first knob passes through an axially penetrating adjusting hole provided by the first potentiometer, and the limiting portion of the first knob is located on the side of the first potentiometer facing the clearance through hole and has a preset distance between it and the first potentiometer. The adjusting rod of the second knob passes through an axially penetrating adjusting hole provided by the second potentiometer, and the limiting portion of the second knob is located on the side of the second potentiometer facing the clearance through hole and touches the second potentiometer.

[0010] In a preferred embodiment, the adjusting rod of the first knob is fitted with the first limiting member at the position between the limiting portion and the first potentiometer, and the side of the limiting portion of the first knob facing the first potentiometer touches the first limiting member fitted outside the adjusting rod.

[0011] In a preferred embodiment, the limiting portion consists of a plurality of limiting plates spaced apart circumferentially along the adjusting rod, each limiting plate extending radially along the adjusting rod.

[0012] In a preferred embodiment, the tail end of the first knob is tapered, and the first limiting member has a positioning hole at the position corresponding to the tail end of the first knob.

[0013] In a preferred embodiment, the first limiting member has multiple legs, each leg being connected to the PCB board, and the connection method includes one or more of the following: welding, bonding, plugging, snap-fit ​​connection, and interference fit; the PCB board is parallel to the adjustment axes of the first potentiometer and the second potentiometer; the first limiting member is sheet-shaped, its maximum size is smaller than the radial size of the first potentiometer, and the first limiting member is perpendicular to the PCB board; the structure and connection method of the second limiting member are the same as those of the first limiting member.

[0014] In a preferred embodiment, the first potentiometer is located on the side of the second potentiometer away from the clearance through hole in the axial direction, and the projection portions of the first potentiometer and the second potentiometer overlap in the direction of their adjustment axis; multiple second potentiometers are provided, and the multiple second potentiometers are arranged side by side, with the first potentiometer located on the side away from the clearance through hole between two adjacent second potentiometers; the operating end of the first knob and the operating end of the second knob are respectively provided with groove structures suitable for cooperating with adjustment tools; the structure and size of the first knob are consistent with those of the second knob.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Because this utility model also includes a limiting structure connected to the housing and / or PCB board, this limiting structure at least axially limits the first knob to prevent it from displacing away from the clearance hole. This allows the utility model to prevent the first knob from collapsing downwards when rotated, thereby improving operational reliability. In particular, the limiting structure allows the first knob and the second knob to be implemented using the same type of universal knob, thus avoiding additional production costs.

[0017] 2. As a preferred embodiment, the limiting structure may include a first limiting member for axially limiting the first knob, and a second limiting member for axially limiting the second knob. This design not only helps to improve the stability of the second knob when it is rotated, but also greatly reduces the axial pressure transmitted to the second potentiometer when the second knob is rotated, thereby improving the force on the pins of the second potentiometer.

[0018] 3. As a preferred method, the first limiting member is provided with multiple support legs, each of which is connected to the PCB board, and the connection method is preferably welding, so that the connection method of the first limiting member is simple and reliable.

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the relay module with potentiometer of the present invention is not limited to the embodiments. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a utility model (partial view of the shell).

[0021] Figure 2 This is a schematic diagram of the combination of various potentiometers, knobs, and limit plates of a utility model in an embodiment;

[0022] Figure 3 This is a three-dimensional structural schematic diagram of the first knob of this utility model according to an embodiment;

[0023] Figure 4 This is a three-dimensional structural schematic diagram of the first limiting piece of this utility model, as described in the embodiment.

[0024] Figure 5 This is a front view (showing a part) of an embodiment of a utility model;

[0025] Figure 6 This is a front view (partial view) of the present invention as described in Embodiment 2;

[0026] Figure 7 This is a front view (showing a part) of the utility model in Embodiment 3;

[0027] Figure 8 This is a front view (partial view) of the utility model in Embodiment 4;

[0028] In the diagram, 1 is the housing; 11 is the clearance through hole; 2 is the PCB board; 3 is the first potentiometer; 4 is the second potentiometer; 5 is the first knob; 51 / 61 is the adjusting rod; 52 / 62 is the limiting part; 53 is the straight groove; 6 is the second knob; 7 is the first limiting part; 71 is the support foot; 72 is the positioning hole; and 8 is the second limiting part. Detailed Implementation

[0029] In this utility model, the terms "first," "second," etc., are used only to distinguish similar objects, not 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," "rear," "inner," "outer," and "top / bottom" 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, not to 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.

[0030] Furthermore, in the description of this utility model, unless otherwise stated, "multiple" refers to 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.

[0031] Example 1

[0032] Please see Figures 1-5As shown, this utility model discloses a relay module with potentiometers, comprising a housing 1 and a PCB board 2 disposed within the housing 1. The PCB board 2 is connected to at least one first potentiometer 3 and at least one second potentiometer 4 with their adjustment axes parallel to each other. The first potentiometer 3 has a first knob 5, and the second potentiometer 4 has a second knob 6. The housing 1 has clearance holes 11 corresponding to the operating ends of the first knob 5 and the second knob 6, respectively. The operating ends of the first knob 5 and the second knob 6 respectively fit into the corresponding clearance holes 11 and cannot be displaced outside the clearance holes 11. The first potentiometer 3 is located on the side of the second potentiometer 4 away from the clearance holes 11 in the axial direction, and the projection portions of the first potentiometer 3 and the second potentiometer 4 overlap in the direction of their adjustment axes. This utility model also includes a limiting structure connected to the housing 1 and / or the PCB board 2, which at least axially limits the first knob 5 to prevent it from displacing away from the clearance holes 11.

[0033] Multiple second potentiometers 4 are provided, arranged side by side. The first potentiometer 3 is located on the side away from the clearance hole 11 between two adjacent second potentiometers 4, and the projection portions of the first potentiometer 3 and the two adjacent second potentiometers 4 in the direction of their adjustment axes overlap. This design allows the first potentiometer 3 and the second potentiometers 4 to be arranged compactly, thereby reducing the space occupied and facilitating the miniaturization of the relay design. In this embodiment, one first potentiometer 3 and two second potentiometers 4 are used as an example for illustration, but it is not limited to this.

[0034] In this embodiment, the limiting structure includes a first limiting member 7 corresponding to the first knob 5. This first limiting member 7 is used to axially limit the first knob 5, preventing it from displacing away from the clearance through hole 11 when rotated. Specifically, the first limiting member 7 is located on the side of the first potentiometer 3 away from the clearance through hole 11 in the axial direction. The tail end of the first knob 5 passes through the axially penetrating adjustment hole of the first potentiometer 3, and the tail end of the first knob 5 touches the first limiting member 7. The tail end and the operating end of the first knob 5 are the two ends of the first knob 5 in the axial direction. The operating ends of the first knob 5 and the second knob 6 are respectively provided with groove structures suitable for cooperating with adjustment tools. In this embodiment, the groove structure is specifically a straight groove 53, such as... Figure 3 As shown, but not limited to, in other embodiments, the groove structure is a cross-shaped groove, an internal hexagonal groove, etc. The adjustment tool can be a screwdriver, wrench, hexagonal bar, or any other tool suitable for operating the knob.

[0035] The structure and dimensions of the first knob 5 are identical to those of the second knob 6; that is, the first knob 5 and the second knob 6 use the same type of knob structure. Figure 3As shown, the first knob 5 and the second knob 6 each include an adjusting rod and a limiting part protruding from the outside of the adjusting rod. The adjusting rod 51 of the first knob 5 passes through the adjusting hole of the first potentiometer 3, and the limiting part 52 of the first knob 5 is located on the side of the first potentiometer 3 facing the clearance through hole 11, and has a preset distance between it and the first potentiometer 3 (because there is a height difference between the first potentiometer 3 and the second potentiometer 4). The adjusting rod 61 of the second knob 6 passes through the axially penetrating adjusting hole of the second potentiometer 4, and the limiting part 62 of the second knob 6 is located on the side of the second potentiometer 4 facing the clearance through hole 11 and touches the second potentiometer 4. Therefore, the second knob 6 can be directly limited by the stop of the second potentiometer 4 to prevent it from collapsing during rotation. The adjusting rod and the adjusting hole are compatible, and the outlines of both are non-circular, such as hexagonal, quadrilateral, or elliptical.

[0036] In this embodiment, the limiting portions 52 / 62 are multiple limiting pieces distributed circumferentially along the adjusting rod 51 / 61, but are not limited to this. Each limiting piece extends radially along the adjusting rod, that is, the width direction of each limiting piece is located in the radial direction of the adjusting rod. Preferably, the limiting pieces are integrally formed with the adjusting rod, and the setting of the limiting pieces can also play a reinforcing role to improve the strength of the adjusting rod.

[0037] like Figure 4 As shown, the first limiting member 7 has multiple legs 71, each leg 71 being connected to the PCB board 2. The connection methods include one or more of welding, bonding, plugging, snap-fit, and interference fit, with welding being preferred. Therefore, the first limiting member 7 is preferably made of a metal material with good hardness, such as stainless steel, which not only improves the connection strength between the first limiting member 7 and the PCB board 2 but also reduces wear caused by its relative movement with the first knob 5. In this embodiment, there are two legs 71 arranged side by side.

[0038] The PCB board 2 is parallel to the adjustment axes of the first potentiometer 3 and the second potentiometer 4. The first limiting member 7 is sheet-shaped, and its maximum size (i.e., the length and / or width of the first limiting member 7) is smaller than the radial size of the first potentiometer 3. The first limiting member 7 is perpendicular to the PCB board 2. This design makes the first limiting member 7 small in size and occupies little space.

[0039] In this embodiment, the tail end of the adjusting rod is tapered, and the first limiting member 7 has a positioning hole 72 at the position corresponding to the tail end of the adjusting rod. This positioning hole 72 can be a blind hole or a through hole. The positioning hole 72 serves to lock the mating position of the tail end of the adjusting rod of the first knob 5 with the first limiting member 7, and also reduces the contact area between the first knob 5 and the first limiting member 7, thereby further reducing wear caused by their relative movement. In other embodiments, the first limiting member 7 does not have a positioning hole 72.

[0040] This utility model discloses a relay module with a potentiometer. A first limiting member 7 provides axial restraint for a first knob 5, ensuring that the first knob 5 is supported when rotated, thus preventing it from collapsing and improving operational reliability. The first limiting member 7 also allows the first knob 5 and the second knob 6 to be implemented using the same type of universal knob, eliminating the need for additional production costs.

[0041] Example 2

[0042] Please see Figure 6 As shown, the relay module with potentiometer of this utility model differs from the first embodiment described above in that the limiting structure further includes a second limiting member 8 corresponding to each second knob 6. This second limiting member 8 axially limits the second knob 6 to prevent it from displacing away from the clearance through hole 11. Specifically, the second limiting member 8 is located on the side of the second potentiometer 4 away from the clearance through hole 11 in the axial direction, and the tail end of the second knob 6 abuts against the second limiting member 8.

[0043] The setting of the second limiting member 8 not only helps to improve the stability when the second knob 6 is rotated, but also greatly reduces the axial pressure transmitted to the second potentiometer 4 when the second knob 6 is rotated, thereby improving the force on the pins of the second potentiometer 4.

[0044] In this embodiment, the structure, size, and connection method of the second limiting member 8 are the same as those of the first limiting member 7, that is, the second limiting member 8 and the first limiting member 7 can be implemented using the same general-purpose limiting member. Therefore, the second limiting member 8 is preferably made of metal and is soldered to the PCB board 2 using its two legs 71.

[0045] Example 3

[0046] Please see Figure 7 As shown, the relay module with a potentiometer of this utility model differs from the above embodiment in that: the first limiting member 7 is sleeved outside the adjusting rod 51 of the first knob 5. Specifically, the first limiting member 7 is sleeved on the portion of the adjusting rod 51 of the first knob 5 between the limiting part 52 and the first potentiometer 3, and the side of the limiting part 52 of the first knob 5 facing the first potentiometer 3 touches the first limiting member 7. Specifically, the first limiting member 7 can cooperate with the adjusting rod 51 using its positioning hole 72.

[0047] In this embodiment, the limiting structure further includes second limiting members 8 corresponding to each second knob 6. These second limiting members 8 axially limit the second knob 6 to prevent it from displacing away from the clearance through-hole 11. Specifically, the second limiting member 8 is located on the side of the second potentiometer 4 away from the clearance through-hole 11 in the axial direction, and the tail end of the second knob 6 abuts against the second limiting member 8. The structure, size, and connection method of the second limiting member 8 are consistent with the first limiting member 7; that is, the second limiting member 8 and the first limiting member 7 can be implemented using the same general-purpose limiting member. In other embodiments, the limiting structure only includes the first limiting member 7.

[0048] Example 4

[0049] Please see Figure 8 As shown, the relay module with potentiometer of this utility model differs from the above embodiment in that: the limiting structure includes two first limiting members 7, which are respectively located on both sides of the first potentiometer 3 in the axial direction. The tail end of the adjusting rod 51 of the first knob 5 touches one of the first limiting members 7; the adjusting rod 51 of the first knob 5 passes through the other first limiting member 7, and the limiting part 52 of the first knob 5 touches the other first limiting member 7. Therefore, this utility model uses two first limiting members 7 to provide dual limiting for the first knob 5, thereby improving the limiting effect of the first knob 5.

[0050] The present invention relates to a relay module with a potentiometer. The parts not described herein are the same as or can be implemented using existing technologies.

[0051] The above embodiments are only used to further illustrate a relay module with a potentiometer according to the present invention. However, the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A relay module with potentiometers, comprising a housing and a PCB board disposed within the housing, the PCB board being connected to at least one first potentiometer and at least one second potentiometer with adjustment axes parallel to each other, the first potentiometer having a first knob, the second potentiometer having a second knob, and the housing having clearance through holes corresponding to the operating ends of the first knob and the second knob, respectively; characterized in that: It also includes a limiting structure connected to the housing and / or PCB board, which limits the first knob axially to prevent it from displacing away from the clearance through hole.

2. The relay module with potentiometer according to claim 1, characterized in that: The limiting structure includes at least one first limiting element corresponding to the first knob.

3. The relay module with potentiometer according to claim 2, characterized in that: The limiting structure also includes a second limiting member corresponding to the second knob. The second limiting member axially limits the second knob to prevent it from displacing away from the clearance through hole.

4. The relay module with potentiometer according to claim 2, characterized in that: The tail end of the first knob passes through the axially penetrating adjustment hole provided by the first potentiometer, and the tail end of the first knob touches the first limiting member.

5. The relay module with potentiometer according to claim 3, characterized in that: The tail end of the second knob passes through the axially penetrating adjustment hole provided by the second potentiometer, and the tail end of the second knob touches the second limiting member.

6. The relay module with potentiometer according to any one of claims 2-5, characterized in that: The first knob and the second knob each include an adjusting rod and a limiting part protruding from the outside of the adjusting rod. The adjusting rod of the first knob passes through the axially penetrating adjusting hole of the first potentiometer. The limiting part of the first knob is located on the side of the first potentiometer facing the clearance through hole and has a preset distance from the first potentiometer. The adjusting rod of the second knob passes through the axially penetrating adjusting hole of the second potentiometer. The limiting part of the second knob is located on the side of the second potentiometer facing the clearance through hole and touches the second potentiometer.

7. The relay module with potentiometer according to claim 6, characterized in that: The first limiting member is sleeved on the adjustment rod of the first knob at the position between the limiting part and the first potentiometer, and the side of the limiting part of the first knob facing the first potentiometer touches the first limiting member sleeved on the adjustment rod.

8. The relay module with potentiometer according to claim 4, characterized in that: The tail end of the first knob is tapered, and the first limiting member has a positioning hole at the position corresponding to the tail end of the first knob.

9. The relay module with potentiometer according to claim 3, characterized in that: The first limiting member has multiple legs, each leg being connected to the PCB board, and the connection method includes one or more of the following: welding, bonding, plugging, snap-fit ​​connection, and interference fit; the PCB board is parallel to the adjustment axes of the first potentiometer and the second potentiometer; the first limiting member is sheet-shaped, its maximum size is smaller than the radial size of the first potentiometer, and the first limiting member is perpendicular to the PCB board; the structure and connection method of the second limiting member are the same as those of the first limiting member.

10. The relay module with potentiometer according to claim 1, characterized in that: The first potentiometer is located on the side of the second potentiometer away from the clearance through hole in the axial direction, and the projection portions of the first potentiometer and the second potentiometer overlap in the direction of their adjustment axis; multiple second potentiometers are provided, and the multiple second potentiometers are arranged side by side, with the first potentiometer located on the side away from the clearance through hole between two adjacent second potentiometers; the operating end of the first knob and the operating end of the second knob are respectively provided with groove structures suitable for cooperating with adjustment tools; the structure and size of the first knob are the same as those of the second knob.

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