Locking screw assembly and connecting assembly

Abstract

The utility model relates to the technical field of connectors, and discloses a locking screw assembly which comprises a locking screw and an anti-disengagement baffle ring. The locking screw comprises a head part, a screw body and a screw rod which are connected in sequence, the outer diameter of a thread of the screw rod is larger than that of the screw body, and the diameter of the head part is larger than the inner diameter of the first locking through hole; the anti-falling baffle ring comprises an expandable ring body and a plurality of separation blades which are arranged on the outer circumferential wall of the ring body and extend outwards in the radial direction, the anti-falling baffle ring shrinks towards the inner side after passing through the screw rod side, is limited on the screw body and can slide in the axial direction, and the outer diameter of the separation blades is larger than the inner diameter of the first locking through hole; the anti-falling baffle ring and the head part are positioned on the two sides of the first locking through hole so as to prevent the locking screw from retreating from the first locking through hole; the utility model further discloses a connecting assembly comprising the locking screw assembly. According to the utility model, the locking screw can be prevented from being lost, the assembly process can be reduced, and the assembly time can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and more specifically, to a locking screw assembly and a connecting assembly. Background Art

[0002] In connectors adapted to flat ribbon wires, a locking screw is usually used to connect the conductive terminals in the plug and the socket. The locking screw usually includes an enlarged head and a nail body with external threads in at least a part of the area. The conductive terminal is usually a cylindrical structure with a locking through hole extending along the axis. The conductive terminal in the socket is adapted to have an internal threaded hole for threading with the nail body. When the plug and the socket are connected, the nail body of the locking screw penetrates through the locking through hole of the conductive terminal in the plug until it is threadedly connected with the conductive terminal in the socket. The head of the locking screw is in close contact with the end face of the locking through hole away from the socket. At this time, the conductive terminals in the plug and the socket form a radial end face electrical fit to transmit electrical energy.

[0003] Normally, the locking screw is a separate spare part and is inserted into the conductive terminal of the plug when the plug and the socket are connected. That is, before transportation and assembly, the locking screw and the plug have no assembly relationship. This method is likely to cause the locking screw to be lost in actual use, and is also time-consuming and labor-intensive when assembling the plug and the socket. Therefore, in response to this problem, developing a locking screw assembly that can be effectively pre-installed in the conductive terminal of the plug has become a technical development trend. Utility Model Content

[0004] The utility model provides a locking screw assembly, which can effectively pre-install the locking screw in the adapter tube of the plug, solve the problem that the locking screw is easy to lose and the assembly is time-consuming and labor-intensive in the prior art, and also provides a connection assembly including the locking screw assembly.

[0005] The first aspect of the utility model provides a locking screw assembly, which is installed in a first locking through-hole of a first conductive terminal and is used to connect a mating terminal, comprising a locking screw and an anti-slip ring; the locking screw comprises a head, a nail body and a screw rod which are connected in sequence, the outer diameter of the thread of the screw rod is larger than the diameter of the nail body, and the diameter of the head is larger than the inner diameter of the first locking through-hole; the anti-slip ring comprises an expandable ring body and a plurality of radially outwardly extending baffles arranged on the outer peripheral wall of the ring body, the anti-slip ring shrinks inwardly after passing through the screw rod side, is confined on the nail body and can slide axially, and the outer diameter of the baffle is larger than the inner diameter of the first locking through-hole; the anti-slip ring and the head are located on both sides of the first locking through-hole to prevent the locking screw from withdrawing from the first locking through-hole.

[0006] Optionally, a connecting hole is further provided in the first conductive terminal, the connecting hole is coaxially arranged at one end of the first locking through hole facing the mating terminal, and the diameter of the connecting hole is larger than the first locking through hole, and the anti-disengagement ring is located in the connecting hole.

[0007] Optionally, the ring body is a cylindrical structure having a notch extending therethrough in the axial direction, and the ring body elastically expands outward when passing through the screw side so that the ring body can be installed into the nail body.

[0008] Optionally, the blocking piece is formed by integrally stamping and bending one end of the cylindrical structure, and has relative elasticity with the ring body, and the blocking piece is at least partially bent toward the first locking through-hole.

[0009] Optionally, a plurality of claws integrally stamped and formed at one end of the cylindrical structure are arranged between the baffles, and the claws extend axially along the cylindrical structure, and at least part of the claws are bent toward the axis of the cylindrical structure and interfere with the threads of the screw to prevent the anti-disengagement ring from entering the screw area.

[0010] Optionally, the anti-slip ring is integrally stamped from a metal sheet.

[0011] Optionally, an extension portion is connected between the nail body and the head, and a diameter of the extension portion is greater than a diameter of the nail body, so that the extension portion and the screw rod together limit the anti-disengagement ring on the nail body.

[0012] Optionally, an anti-touch column is provided at one end of the screw rod away from the nail body, and the anti-touch column is covered with an insulating cover for preventing accidental touch.

[0013] Optionally, the head is covered with an insulating cover for preventing accidental touch.

[0014] A second aspect of the utility model provides a connection assembly, which includes a plug housing and a second adapter portion and a second conductive terminal arranged in the plug housing, a second conductive terminal having a second locking through-hole arranged in the second conductive terminal, and also includes a locking screw assembly installed in the second locking through-hole, and the locking screw assembly is a locking screw assembly as described in the first aspect.

[0015] The utility model has the following beneficial effects:

[0016] 1. After the locking screw of the utility model is pre-installed in the locking through hole, its head and the anti-disengagement ring can jointly provide axial movement restriction, that is, the locking screw cannot be disengaged from both ends of the locking through hole, so when the connecting component is transported and assembled, there is no need to equip the locking screw separately, and there is no need to install the locking screw separately, which avoids the problem of losing the locking screw, and can reduce the assembly process and save assembly time.

[0017] 2. The anti-dropping retaining ring of the utility model is configured as an expandable / contractible structure for easy assembly. It is quick and easy to assemble with the locking screw and is not easy to unexpectedly fall off from the screw rod of the locking screw, thereby reliably preventing the locking screw from falling off.

[0018] 3. The anti-slip retaining ring of the utility model can slide axially on the nail body, so that the anti-slip retaining ring can flexibly adjust its position on the nail body according to actual working conditions while having an anti-slip effect. It has a higher environmental tolerance and stronger application adaptability, and avoids the problem of interference with other components or obstruction of the normal use of the locking screw caused by the non-axial sliding.

[0019] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0021] Figure 1 is a schematic diagram of the structure of a locking screw;

[0022] Figure 2 It is a schematic diagram of the structure of the anti-slip ring;

[0023] Figure 3 It is a schematic diagram of the assembly of the locking screw and the anti-slip ring;

[0024] Figure 4 is a cross-sectional view of a conductive terminal;

[0025] Figure 5 It is a schematic diagram of the assembly of the locking screw assembly, the conductive terminal and the adapter;

[0026] Figure 6 is a schematic diagram of the connected components;

[0027] Figure 7 for Figure 6 Sectional view along AA direction;

[0028] The following are marked in the figure:

[0029] Locking screw assembly embodiment:

[0030] 1. Locking screw; 11. Head; 111. Head end insulation cover; 12. Wearing body; 13. Nail body; 131. Extension part; 132. Screw; 14. Anti-touch column; 141. Tail end insulation cover;

[0031] 2. anti-dropping retaining ring; 21. ring body; 22. retaining piece; 23. notch; 24. claw;

[0032] 3. A first transfer unit;

[0033] 4. First conductive terminal; 41. First locking through hole; 411. Step structure; 42. Connecting hole.

[0034] Connection assembly example:

[0035] 5. Plug housing; 6. Second adapter; 7. Second conductive terminal; 71. Second locking through hole; 8. Locking screw assembly. DETAILED DESCRIPTION

[0036] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0037] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0038] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0039] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0040] The utility model provides a locking screw assembly, such as Figure 1-5 As shown, it includes a locking screw 1 and an anti-disengagement ring 2, which are inserted into a first locking through hole 41 of a first conductive terminal 4 and used to connect a mating terminal. The first conductive terminal 4 is installed on the first adapter 3.

[0041] The locking screw 1 includes a head 11, a nail body 13 and a screw rod 132 connected in sequence. The outer diameter of the thread of the screw rod 132 is larger than the diameter of the nail body 13, and the diameter of the head 11 is larger than the inner diameter of the first locking through hole 41; obviously, the inner diameter of the first locking through hole 41 is greater than or equal to the outer diameter of the thread of the screw rod 132, and the specific setting is based on the premise that the screw rod 132 can smoothly pass through the first locking through hole 41.

[0042] The anti-slipping retaining ring 2 includes an expandable ring body 21 and a plurality of radially outwardly extending retaining plates 22 arranged on the outer peripheral wall of the ring body 21, wherein the outer diameter of the retaining plates 22 is larger than the inner diameter of the first locking through hole 41; the anti-slipping retaining ring 2 shrinks inwardly after passing through the screw rod 132 side, and is then confined on the nail body 13, and the nail body 13 is a smooth columnar structure, so that the anti-slipping retaining ring 2 can also slide axially on the nail body 13 at the same time. Obviously, in order to achieve the purpose of anti-slipping, even after the anti-slipping retaining ring 2 shrinks on the nail body 13, the outer diameter of the retaining plates 22 is still larger than the inner diameter of the first locking through hole 41.

[0043] The anti-slip ring 2 and the head 11 are located on both sides of the first locking through hole 41 to prevent the locking screw 1 from withdrawing from the first locking through hole 41, that is, the locking screw 1 cannot fall out from both ends of the first locking through hole 41. Therefore, when the connecting component using the locking screw assembly is transported and assembled, there is no need to separately equip the locking screw 1 or to separately install the locking screw 1, thereby avoiding the problem of losing the locking screw 1, reducing the assembly process and saving assembly time.

[0044] It can be obtained that the anti-slip ring 2 of the locking screw assembly is configured to be an expandable / contractible structure that is easy to assemble, and the assembly with the locking screw 1 is convenient and quick, and it is not easy to fall off unexpectedly from the screw 132 of the locking screw 1, and can achieve reliable anti-slip for the locking screw 1; the anti-slip ring 2 is configured to be able to slide axially on the nail body 13. On the premise of having an anti-slip effect, the anti-slip ring 2 can also flexibly adjust its position on the nail body 13 according to actual working conditions. It has a high environmental tolerance and stronger application adaptability, and avoids interference with other components or obstructions to the normal use of the locking screw 1 caused by the inability to axially slide. For example, when the depth of the screw 132 screwed into the mating terminal exceeds expectations, the anti-slip ring 2 can slide under the push of the mating terminal without causing hard obstruction to the mating terminal, so that the locking screw 1 can smoothly connect the first conductive terminal 4 with the mating terminal.

[0045] When the locking screw assembly is used in a specific application, the locking screw 1 can be first installed in the first locking through hole 41 of the first conductive terminal 4, and then the anti-slip ring 2 can be expanded and pass through the screw rod 132 side of the locking screw 1, reach the nail body 13 and shrink on the nail body 13 at the same time. After the anti-slip ring 2 shrinks, the anti-slip ring 2 and the nail body 13 can be tightly attached or have a slight gap, on the premise that the anti-slip ring 2 cannot fall off from the screw rod 132 and can slide smoothly on the nail body 13.

[0046] Furthermore, if Figure 4As shown, in this embodiment, in order to prevent the anti-slip ring 2 from obstructing the electrical contact between the radial end faces of the first conductive terminal 4 and the mating terminal, a connecting hole 42 is further provided in the first conductive terminal 4. The connecting hole 42 is coaxially arranged at one end of the first locking through hole 41 facing the mating terminal, and the diameter of the connecting hole 42 is larger than the first locking through hole 41. The anti-slip ring 2 is located in the connecting hole 42, and the baffle 22 of the anti-slip ring 2 actually interferes with the path of the step structure 411 at the connection between the connecting hole 42 and the first locking through hole 41. At this time, a connecting column that can enter the connecting hole 42 is provided in the mating terminal, and an internal thread that is threadedly connected to the screw 132 is provided in the connecting column, or an internal thread sleeve that can enter the connecting hole 42 is provided in the mating terminal, and the internal thread sleeve is threadedly connected to the screw 132. This structure is a conventional structure in the art, so it will not be described in detail.

[0047] In other embodiments, the through hole passing through the conductive terminal along the axis may also be composed only of locking through holes, and the baffle of the anti-slip ring interferes with the radial end face path of the conductive terminal. At this time, it is necessary to perform an avoidance design for the mating terminal while meeting the electrical performance, such as setting an avoidance groove for avoiding the anti-slip ring on the radial end face of the mating terminal and setting an internal threaded hole in the mating terminal that cooperates with the screw thread. This structure can be easily obtained in the art, so it will not be described in detail.

[0048] Furthermore, in this embodiment, in order to facilitate processing and manufacturing, Figure 2 As shown, the ring body 21 is a cylindrical structure with a notch 23 extending axially therethrough, that is, the radial cross-section of the ring body 21 is C-shaped. When the ring body 21 passes through the side of the screw rod 132, it elastically expands outward so that the ring body 21 can be installed into the nail body 13; the baffle 22 is formed by integrally stamping and bending one end of the cylindrical structure, and has relative elasticity with the ring body 21. The baffle 22 is bent as a whole toward the direction of the first locking through hole 41 so as to have a shock-absorbing effect when in contact with the step structure 411.

[0049] In other embodiments, the ring body may also adopt other forms of expandable / contractible structures, such as a cylindrical structure having a plurality of folds extending axially on the cylinder wall, for example a cylindrical structure having a radial cross-section of a regular five-pointed star, which has the ability to expand and deform radially and contract and recover; the baffle may also be fixed to the ring body by welding or other fixing methods; the baffle may also be simply bent so that the end away from the ring body is bent toward the locking perforation.

[0050] Furthermore, in the present embodiment, in order to enhance the effect of preventing the anti-slip ring 2 from falling off the screw 132, a claw 24 integrally stamped from one end of the cylindrical structure is also provided between the baffles 22, the claw 24 and the baffle 22 are located at the same end of the cylindrical structure, and each claw 24 extends along the axial direction of the cylindrical structure, and each claw 24 is bent as a whole in the direction of the axis of the cylindrical structure and interferes with the thread of the screw 132 to prevent the anti-slip ring 2 from entering the screw 132 area.

[0051] In other embodiments, there may be two or more claws between adjacent baffles; a part of the multiple claws may be bent to ensure that at least one claw is bent toward the axis of the cylindrical structure; in addition, each bent claw may be partially bent toward the axis of the cylindrical structure, such as bending the end away from the cylindrical structure toward the axis of the cylindrical structure, or may be bent as a whole toward the axis of the cylindrical structure.

[0052] Furthermore, in this embodiment, in order to facilitate processing and manufacturing and reduce processing costs, the anti-dropping ring 2 is integrally stamped, curled, and bent from a metal plate.

[0053] In other embodiments, the anti-slip ring can also be formed by integrally cutting and bending a metal pipe; or, the anti-slip ring can also be integrally injection molded by plastic, in which case there is no need for stamping, cutting, or bending, and only needs to be injection molded into the desired shape.

[0054] Furthermore, in this embodiment, in order to further limit the position of the anti-slip ring 2, an extension portion 131 is connected between the nail body 13 and the head 11, and the diameter of the extension portion 131 is larger than the diameter of the nail body 13, so that the extension portion 131 and the screw 132 can jointly limit the anti-slip ring 2 on the nail body 13. Obviously, the diameter of the extension portion 131 is less than or equal to the inner diameter of the first locking through hole 41, and the specific setting is based on the premise that the extension portion 131 can be smoothly installed in the first locking through hole 41. The extension portion 131 in this embodiment is integrally manufactured, and in other embodiments, a plastic sleeve structure can also be injection molded on the nail body to form the aforementioned extension portion 131.

[0055] Furthermore, in this embodiment, in order to prevent the operator from accidentally touching the screw 132 of the locking screw 1, an anti-touch column 14 is provided at one end of the screw 132 away from the nail body 13, and the anti-touch column 14 is covered with an insulating cover for preventing accidental touch. Figure 1 The tail end insulating cover 141 is shown. The extension portion 131, the nail body 13, the screw rod 132 and the anti-touch column 14 together constitute the wearing body 12 of the locking screw 1.

[0056] Furthermore, in this embodiment, in order to prevent the operator from accidentally touching the head 11 of the locking screw 1, the head 11 is covered with an insulating cover for preventing accidental touching. Figure 1 The head end insulation cover 111 shown in the figure comprises a cylindrical portion and a covering portion located in the cylindrical portion and covering the surface of the head 11. Figure 1 The head 11 shown is covered by the covering portion of the head end insulating cover 111.

[0057] A connection component of the utility model, such as Figure 6-7As shown, the connecting assembly includes a plug housing 5 and a second adapter portion 6 and a second conductive terminal 7 arranged in the plug housing 5. The second conductive terminal 7 is provided with a second locking through-hole 71. The connecting assembly also includes a locking screw assembly 8 installed in the second locking through-hole 71. The locking screw assembly 8 is a locking screw assembly as described above, so it will not be described in detail.

[0058] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A locking screw assembly, inserted into a first locking through hole (41) of a first conductive terminal (4) and used to connect a mating terminal, characterized in that: It comprises a locking screw (1) and an anti-slip ring (2); The locking screw (1) comprises a head (11), a nail body (13) and a screw rod (132) which are connected in sequence, the outer diameter of the thread of the screw rod (132) is larger than the diameter of the nail body (13), and the diameter of the head (11) is larger than the inner diameter of the first locking through hole (41); The anti-slip ring (2) comprises an expandable ring body (21) and a plurality of radially outwardly extending baffles (22) arranged on the outer peripheral wall of the ring body (21); the anti-slip ring (2) shrinks inward after passing through the screw rod (132) and is confined on the nail body (13) and can slide axially; the outer diameter of the baffle (22) is greater than the inner diameter of the first locking through hole (41); The anti-disengagement ring (2) and the head (11) are located on both sides of the first locking through hole (41) to prevent the locking screw (1) from withdrawing from the first locking through hole (41).

2. A locking screw assembly according to claim 1, characterized in that: A connecting hole (42) is also provided in the first conductive terminal (4), and the connecting hole (42) is coaxially arranged at one end of the first locking through hole (41) facing the mating terminal, and the diameter of the connecting hole (42) is larger than that of the first locking through hole (41), and the anti-disengagement ring (2) is located in the connecting hole (42).

3. A locking screw assembly according to claim 1, characterized in that: The ring body (21) is a cylindrical structure having a notch (23) extending through the ring body in the axial direction. When the ring body (21) passes through the screw rod (132), it elastically expands outward so that the ring body (21) can be installed into the nail body (13).

4. A locking screw assembly according to claim 3, characterized in that: The blocking piece (22) is formed by integrally stamping and bending one end of the cylindrical structure, and has relative elasticity with the ring body (21). The blocking piece (22) is at least partially bent in the direction of the first locking through hole (41).

5. A locking screw assembly according to claim 4, characterized in that: A claw (24) formed by integral stamping from one end of the cylindrical structure is also provided between the baffles (22). The claw (24) extends along the axial direction of the cylindrical structure, and at least a portion of the claw (24) is bent toward the axial direction of the cylindrical structure and interferes with the thread of the screw (132) to prevent the anti-disengagement ring (2) from entering the screw (132) area.

6. A locking screw assembly according to claim 5, characterized in that: The anti-slip ring (2) is integrally stamped from a metal plate.

7. A locking screw assembly according to claim 1, characterized in that: An extension portion (131) is also connected between the nail body (13) and the head (11), and the diameter of the extension portion (131) is larger than the diameter of the nail body (13), so that the extension portion (131) and the screw rod (132) can jointly restrict the anti-disengagement ring (2) on the nail body (13).

8. A locking screw assembly according to claim 7, characterized in that: An anti-touch column (14) is provided at one end of the screw rod (132) away from the nail body (13), and the anti-touch column (14) is covered with an insulating cover for preventing accidental touch.

9. A locking screw assembly according to claim 1, characterized in that: The head (11) is covered with an insulating cover for preventing accidental touch.

10. A connection assembly, comprising a plug housing (5), a second adapter portion (6) and a second conductive terminal (7) arranged in the plug housing (5), wherein a second locking through hole (71) is arranged in the second conductive terminal (7), characterized in that: It also includes a locking screw assembly (8) inserted into the second locking through hole (71), wherein the locking screw assembly (8) is a locking screw assembly as described in any one of claims 1 to 9.

Images