Conducting ring module and preparation method thereof

Abstract

The invention discloses a conducting ring module, which comprises more than two conducting rings and a base, and is characterized in that the more than two conducting rings are arranged on the end surface of one side of the base at intervals from inside to outside; each conducting ring comprises an annular part, a bending part and a wire welding part, the bending part is located between the annular part and the wire welding part and is bent downwards, so that the upper surface of the wire welding part is lower than the upper surface of the annular part, the annular part of the outer conducting ring is provided with a receding notch, and the receding notch is located between the annular part and the wire welding part. Therefore, the annular part of the outer conductive ring is kept away from the bending part and the bonding wire part of the inner conductive ring. By redesigning the structure of the conducting ring, the conducting ring can be directly arranged on the base to form a conducting ring module without a circuit board. The invention further discloses a preparation method of the conducting ring module.

Description

Technical Field

[0001] The invention relates to a conductive ring module, and in particular to a conductive ring module and a preparation method thereof. Background Art

[0002] Conductive ring modules are generally used in products such as telescopic wire devices that require rotating contact for conduction. In other words, the conductive ring module part and the other contact terminal part can rotate relative to each other and always maintain conductive contact. Of course, the conductive ring module part can be used as a moving end or a static end. Traditional conductive ring modules generally adopt a circuit board embedding mode: first, several complete conductive rings are set on the circuit board, and then the circuit board is embedded on the base; a welding wire tray end is set on the circuit board, and several welding wire ends on the welding wire tray are connected to each conductive ring respectively using the multi-layer structure of the circuit board. This traditional conductive ring module is relatively expensive because each module needs to be equipped with an integrated circuit board to set the conductive ring. Summary of the invention

[0003] In view of the above-mentioned deficiencies, the object of the present invention is to provide a conductive ring module and a preparation method thereof. By redesigning the structure of the conductive ring, the conductive ring can be directly set on the base to form a conductive ring module that does not require a circuit board.

[0004] The technical solution adopted by the present invention is: a conductive ring module, including more than two conductive rings and a base, the more than two conductive rings are arranged on one side end surface of the base from the inside to the outside and at intervals; the conductive ring includes an annular portion, a bending portion and a welding wire portion, the bending portion is located between the annular portion and the welding wire portion, and is bent downward, so that the upper surface of the welding wire portion is lower than the upper surface of the annular portion, wherein the annular portion of the outer conductive ring is provided with an avoidance notch, so that the annular portion of the outer conductive ring avoids the bending portion and the welding wire portion of the inner conductive ring.

[0005] Furthermore, the bending portions and welding wire portions of the two or more conductive rings are arranged in a staggered manner; the welding wire portion is provided with an extension section, and the extension section is connected to the bending portion, so that the welding wire position of the welding wire portion is at a set position.

[0006] Furthermore, the set position is: the welding line positions of the welding line parts of more than two conductive rings are arranged on the same straight line at intervals.

[0007] Furthermore, the tail end of the welding wire portion is also provided with a tail end extension section.

[0008] Furthermore, the base is provided with a plastic countersunk hole on the other side end surface corresponding to the conductive ring, so as to avoid the welding wire position of the welding wire part of the conductive ring; the extension section and the tail end extension section of the welding wire part are both buried in the base during injection molding.

[0009] Furthermore, the base is provided with annular track grooves on one end surface of the conductive ring corresponding to the two or more conductive rings, and the annular parts of the two or more conductive rings are respectively located in the corresponding annular track grooves.

[0010] Furthermore, the annular track groove is formed by annular protrusions formed on both sides of the conductive ring by in-mold injection molding, and the annular protrusion between two adjacent conductive rings just fills the gap between the two adjacent conductive rings.

[0011] Furthermore, there are five conductive rings, and the avoidance gaps of the annular parts of the four outer conductive rings gradually increase from the inside to the outside, so that the layout of the avoidance gaps of the annular parts of the four outer conductive rings is in an "eight" shape.

[0012] The method for preparing a conductive ring module comprises the following steps:

[0013] 1) Two or more conductive rings arranged from inside to outside and spaced apart are stamped and formed at one time on the same sheet metal; wherein the conductive ring comprises an annular portion, a bending portion and a welding wire portion, the bending portion is located between the annular portion and the welding wire portion and is bent downward, so that the upper surface of the welding wire portion is lower than the upper surface of the annular portion; the annular portion of the outer conductive ring is provided with an avoidance notch, so that the annular portion of the outer conductive ring avoids the bending portion and the welding wire portion of the inner conductive ring;

[0014] 2) placing the two or more conductive rings stamped and formed at one time in step 1) into a conductive ring module injection molding mold, so that the two or more conductive rings are arranged from the inside to the outside and spaced apart on one side end surface of the base, and performing one-time in-mold injection molding to form a conductive ring module.

[0015] The present invention has the following advantages: a avoiding notch is provided in the annular portion of the outer conductive ring, so that the annular portion of the outer conductive ring avoids the bending portion and the welding wire portion of the inner conductive ring. In this way, one-time stamping and forming of more than two conductive rings can be realized on the same sheet metal. Moreover, the avoiding notch of the outer conductive ring avoids the bending portion and the welding wire portion of the inner conductive ring, so that more than two conductive rings can be arranged on one side end face of the base from the inside to the outside and at intervals; and the bending portion is located between the annular portion and the welding wire portion, and is bent downward, so that the upper surface of the welding wire portion is lower than the upper surface of the annular portion, thereby avoiding short circuit when the conductive ring module and the conductive terminal module rotate relative to each other. The conductive ring module does not need to use a circuit board, and more than two conductive rings can be stamped and molded in one time, which greatly saves product costs and improves production efficiency. In addition, the conductive ring is stamped from a metal sheet and then injection molded on the base. Compared with the traditional method of etching a copper conductive ring on a circuit board, it has better conductivity and is more wear-resistant, ensuring the stability and service life of the rotating contact.

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of the conductive ring module is shown in Figure 1. Figure 1 ;

[0018] Figure 2 The overall structure of the conductive ring module is shown in Figure 1. Figure 2 ;

[0019] Figure 3 Schematic diagram of the structure of more than two conductive rings Figure 1 ;

[0020] Figure 4 Schematic diagram of the structure of more than two conductive rings Figure 2 ;

[0021] Figure 5 Schematic diagram of the structure of more than two conductive rings Figure 3 ;

[0022] Figure 6 The structure of the conductive terminal module is shown in FIG. Figure 1 ;

[0023] Figure 7 The structure of the conductive terminal module is shown in FIG. Figure 2 ;

[0024] In the figure: conductive ring 1; annular portion 11; bending portion 12; welding wire portion 13; extension section 131; welding wire position 132; tail extension section 133; avoidance gap 14; base 2; plastic countersunk hole 21; annular track groove 22; annular protrusion 23; conductive terminal module 3; conductive terminal 31. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the present invention, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] See also Figures 1 to 7 The conductive ring module provided in this embodiment includes more than two conductive rings 1 and a base 2; the more than two conductive rings 1 are arranged on one side end surface of the base 2 from the inside to the outside and at intervals; the conductive ring 1 includes an annular portion 11, a bending portion 12 and a welding wire portion 13, the bending portion 12 is located between the annular portion 11 and the welding wire portion 13, and is bent downward, so that the upper surface of the welding wire portion 13 is lower than the upper surface of the annular portion 11, wherein the annular portion of the outer conductive ring is provided with an avoidance notch 14, so that the annular portion 11 of the outer conductive ring avoids the bending portion 12 and the welding wire portion 13 of the inner conductive ring.

[0029] This embodiment uses five conductive rings: a first conductive ring, a second conductive ring, a third conductive ring, a fourth conductive ring, and a fifth conductive ring, wherein the annular portion of the first conductive ring is a complete circular ring located at the innermost side, and the annular portions of the second, third, fourth, and fifth conductive rings have avoidance notches, located at the outer side in sequence. Of course, the annular portion of the innermost first conductive ring can be a complete circular ring because it is located at the innermost side, and there is no need to avoid the bending portions and welding wire portions of other conductive rings.

[0030] The annular portion of the outer conductive ring is provided with an avoidance notch, so that the annular portion of the outer conductive ring avoids the bending portion and the welding wire portion of the inner conductive ring. In this way, one-time stamping and forming of more than two conductive rings can be achieved on the same sheet metal. Because if the avoidance notch is not provided, the bending portion and the welding wire portion of the inner conductive ring will inevitably affect the integrity of the annular portion of the outer conductive ring during the stamping and forming process. Therefore, the outer conductive ring is designed with an avoidance notch, and the avoidance notch is made to correspond to the bending portion and the welding wire portion of the inner conductive ring, so that one-time stamping and forming of more than two conductive rings can be achieved, and then the annular portion of the conductive ring can still play the role of rotational conduction.

[0031] For example, the overall shape of the outer conductive ring is roughly "?"-shaped, and its annular portion is roughly "C"-shaped; in this way, the conductive terminals 31 of the conductive terminal module 3 that rotates relative to the conductive ring module only need to be designed with more than two conductive terminals corresponding to a certain conductive ring, so that it can be ensured that during the mutual rotation of the two, at least one conductive terminal is in contact with the annular portion of the conductive ring for electrical conduction. Preferably, the conductive terminal module is designed with three conductive terminals corresponding to a certain conductive ring, arranged in a triangle on the same circumference, so that basically during the rotation process, at least two conductive terminals can be guaranteed to be in contact with the annular portion of the conductive ring.

[0032] Moreover, the avoidance notch of the outer conductive ring avoids the bending part and the welding wire part of the inner conductive ring, so that more than two conductive rings can be arranged from the inside to the outside and at intervals on one side end face of the base; and the bending part is located between the annular part and the welding wire part, and is bent downward, so that the upper surface of the welding wire part is lower than the upper surface of the annular part, thereby avoiding short circuit when the conductive ring module and the conductive terminal module rotate relative to each other. The reason why the conductive ring is provided with a bending part is to allow the welding wire part to sink a little, forming a vertical height misalignment, and avoiding the conductive terminal of the conductive terminal module corresponding to the annular part of the outer conductive ring from touching the welding wire part of the inner conductive ring, especially the extension section of the welding wire part, during the relative rotation. Because the circuit board is removed and there is no multi-layer structure of the circuit board, the technical features of "bending part" and "avoidance notch" must be designed for the conductive ring, so that the conductive ring can be arranged from the inside to the outside and at intervals on one side end face of the base, and play the role of rotation conduction without short circuit.

[0033] The conductive ring module does not need to use a circuit board, and more than two conductive rings can be stamped and molded at one time, which greatly saves product costs and improves production efficiency.

[0034] In addition, the conductive ring is stamped from a metal sheet and then injection molded on the base. Compared with the traditional method of etching a copper conductive ring on a circuit board, it has better conductivity and is more wear-resistant, ensuring the stability and service life of the rotating contact.

[0035] Specifically, the bending parts and the welding parts of the two or more conductive rings are arranged in a staggered manner; the welding part 13 is provided with an extension section 131, and the extension section 131 is connected to the bending part 12, so that the welding line position 132 of the welding line part 13 is at a set position. More specifically, the set position is: the welding line positions 132 of the welding line parts 13 of the two or more conductive rings 1 are arranged on the same straight line at intervals.

[0036] This design can maximize the use of space, ensure that the annular portion of the conductive ring has a relatively complete ring shape, and facilitate wire welding and routing. It is also convenient for the subsequent setting and molding of plastic countersunk holes, and minimize the overall diameter of the conductive ring module to ensure the compactness of the conductive ring module. Because when the conductive ring module is used in products such as telescopic wire modules, its overall diameter is often limited. If the overall diameter of the conductive ring module is too large, it will limit its application range and affect its market value.

[0037] Specifically, the tail end of the welding wire part 13 is also provided with a tail end extension section 133. More specifically, the base 2 is provided with a plastic countersunk hole 21 on the other side end surface corresponding to the conductive ring 1, so as to avoid the welding wire position 132 of the welding wire part 13 of the conductive ring 1; the extension section 131 and the tail end extension section 133 of the welding wire part 13 are both embedded in the base 2 during injection molding.

[0038] Such a design can ensure the stability of the conductive ring on the base and also facilitate the in-mold injection molding of the conductive ring.

[0039] Specifically, the avoidance gaps of the annular parts of the four outer conductive rings gradually increase from the inside to the outside, so that the avoidance gaps of the annular parts of the four outer conductive rings are arranged in an "eight" shape.

[0040] Specifically, the base 2 is provided with an annular track groove 22 corresponding to two or more conductive rings on one side end face of the conductive ring, and the annular parts of the two or more conductive rings are respectively located in the corresponding annular track grooves. With such a design, the track groove can limit and guide the conductive terminal 31 of the conductive terminal module 3. More specifically, the annular track groove 22 is composed of an annular protrusion 23 formed on both sides of the conductive ring by in-mold injection molding, and the annular protrusion between two adjacent conductive rings just fills the gap between the two adjacent conductive rings. That is, the width of the annular protrusion between two adjacent conductive rings is equal to the width of the gap between the two adjacent conductive rings.

[0041] Specifically, five conductive rings are a more preferred number, and since the four outer conductive rings are all provided with avoidance gaps, the number is relatively large, and an "eight"-shaped layout is adopted, which is convenient for in-mold injection molding, can effectively save space, and is convenient for the setting of the conductive ring welding line part.

[0042] In addition, it should be noted that the structural design of the notched outer conductive ring can minimize the overall diameter of the conductive ring layout, because the conductive ring welding wire portion can be as close to the avoidance notch as possible. In short, the existence of the avoidance notches of the four outer conductive rings can form an "eight"-shaped avoidance space, so that the bending portion and the extension portion of the conductive ring can be arranged using the avoidance space, thereby reducing the overall diameter.

[0043] The method for preparing a conductive ring module comprises the following steps:

[0044] 1) Two or more conductive rings arranged from inside to outside and spaced apart are stamped and formed at one time on the same sheet metal; wherein the conductive ring comprises an annular portion, a bending portion and a welding wire portion, the bending portion is located between the annular portion and the welding wire portion and is bent downward, so that the upper surface of the welding wire portion is lower than the upper surface of the annular portion; the annular portion of the outer conductive ring is provided with an avoidance notch, so that the annular portion of the outer conductive ring avoids the bending portion and the welding wire portion of the inner conductive ring;

[0045] 2) placing the two or more conductive rings stamped and formed at one time in step 1) into a conductive ring module injection molding mold, so that the two or more conductive rings are arranged from the inside to the outside and spaced apart on one side end surface of the base, and performing one-time in-mold injection molding to form a conductive ring module.

[0046] It should be noted here that, taking the conductive ring module with five conductive rings as an example, since the four outer conductive rings are all provided with avoidance notches, and the number is large, an "eight"-shaped layout is adopted, and the existence of the conductive ring bending part makes the upper surface of the welding wire part lower than the upper surface of the ring part (there is a space for upper and lower misalignment, and the rubber material can flow), which can improve the quality and efficiency of in-mold injection molding; the flow of the rubber material is more uniform, avoiding the occurrence of pores, lack of material, etc. In other words, it is precisely because of this structural design of more than two conductive rings that one-time stamping and one-time in-mold injection molding become possible, and effectively reduce the cost of the product and improve the quality of the product.

[0047] The present invention is not limited to the above-mentioned embodiments. Other conductive ring modules and preparation methods thereof obtained by adopting the same or similar technical features as the above-mentioned embodiments of the present invention are within the protection scope of the present invention.

Claims

1. A conductive ring module, comprising two or more conductive rings and a base, wherein the two or more conductive rings are arranged on one side end surface of the base from inside to outside and at intervals, characterized in that: The conductive ring includes an annular portion, a bending portion and a welding wire portion, wherein the bending portion is located between the annular portion and the welding wire portion and is bent downward so that the upper surface of the welding wire portion is lower than the upper surface of the annular portion, wherein the annular portion of the outer conductive ring is provided with an avoidance notch so that the annular portion of the outer conductive ring avoids the bending portion and the welding wire portion of the inner conductive ring.

2. The conductive ring module according to claim 1, characterized in that: The bending parts and welding wire parts of the two or more conductive rings are arranged in a staggered manner; the welding wire part is provided with an extension section, and the extension section is connected to the bending part, so that the welding wire position of the welding wire part is at a set position.

3. The conductive ring module according to claim 2, characterized in that: The set position is: the welding line positions of the welding line parts of more than two conductive rings are arranged on the same straight line at intervals.

4. The conductive ring module according to claim 2 or 3, characterized in that: The tail end of the welding wire portion is also provided with a tail end extension section.

5. The conductive ring module according to claim 4, characterized in that: The base is provided with a plastic countersunk hole on the other side end surface corresponding to the conductive ring, so as to avoid the welding wire position of the welding wire part of the conductive ring; the extension section and the tail end extension section of the welding wire part are both buried in the base during injection molding.

6. The conductive ring module according to claim 1, characterized in that: The base is provided with annular track grooves on one end surface of the conductive ring, corresponding to the two or more conductive rings, and the annular parts of the two or more conductive rings are respectively located in the corresponding annular track grooves.

7. The conductive ring module according to claim 6, characterized in that: The annular track groove is formed by annular protrusions formed on both sides of the conductive ring by in-mold injection molding, and the annular protrusion between two adjacent conductive rings just fills the space between the two adjacent conductive rings.

8. The conductive ring module according to claim 1, characterized in that: There are five conductive rings, and the avoidance gaps of the annular parts of the four outer conductive rings gradually increase from the inside to the outside, so that the layout of the avoidance gaps of the annular parts of the four outer conductive rings is in an "eight" shape.

9. A method for preparing a conductive ring module, characterized in that: The steps include: 1) Two or more conductive rings arranged from inside to outside and spaced apart are stamped and formed at one time on the same sheet metal; wherein the conductive ring comprises an annular portion, a bending portion and a welding wire portion, the bending portion is located between the annular portion and the welding wire portion and is bent downward, so that the upper surface of the welding wire portion is lower than the upper surface of the annular portion; the annular portion of the outer conductive ring is provided with an avoidance notch, so that the annular portion of the outer conductive ring avoids the bending portion and the welding wire portion of the inner conductive ring; 2) placing the two or more conductive rings stamped and formed at one time in step 1) into a conductive ring module injection molding mold, so that the two or more conductive rings are arranged from the inside to the outside and spaced apart on one side end surface of the base, and performing one-time in-mold injection molding to form a conductive ring module.

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