Wire end connector and connector combination

Abstract

A wire end connector comprises an insulating body with an axial direction; the cable extends perpendicular to the axial direction and is provided with a plurality of core wires; the shielding shell covers the insulating body and is used for limiting and fixedly holding the cable; the plurality of conductive terminals are fixedly held by the insulating body and exposed out of the shielding shell, and the conductive terminals are in one-to-one correspondence with the core wires and are electrically connected with the core wires; and the shielding shell can drive the cable to rotate forwards / reversely relative to the insulating body around the axial direction. The utility model also relates to a connector combination. According to the utility model, the cable does not interfere with the installation of the wire end connector on the board end connector, thereby facilitating the smooth butt joint of the wire end connector on the board end connector, and improving the convenient use experience of workers.

Description

Technical Field

[0001] The utility model relates to the field of connectors, in particular to a wire-end connector and a connector combination. Background Art

[0002] The wire-end connector includes a cable and a plug located at the end of the cable. Since the wire-end connector (or called plug connector) is to be docked with the board-end connector (or called socket connector), and sometimes the peripheral position of the socket connector is relatively cramped. For example, the socket connector is located at the corner of a specific space and is close to other components. Also, since the cable extends from the plug at a fixed angle, it will interfere with the correct installation of the plug connector on the socket connector, resulting in inconvenience during the operation of personnel. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a wire-end connector and a connector combination, in which the cable will not interfere with the installation of the wire-end connector on the board-end connector, which is beneficial to the smooth docking of the wire-end connector on the board-end connector.

[0004] To achieve the above purpose, the utility model adopts the following technical solution 1: A wire-end connector, including: an insulating body having an axis; a cable extending perpendicular to the axis, the cable having a plurality of core wires; a shielding shell that covers the insulating body and limits and holds the cable; a plurality of conductive terminals held by the insulating body and exposed from the shielding shell, the conductive terminals corresponding to the core wires one by one and being electrically connected; the shielding shell can drive the cable to rotate forward / backward relative to the insulating body around the axis.

[0005] As a further improved technical solution 1 of the utility model, the axis defines the up and down directions, the shielding shell includes a first shell and a second shell, the first shell and the second shell are respectively installed from the upper and lower sides of the insulating body and are fastened and fixed to each other; the first shell includes a top wall and a first annular side wall, and the second shell includes a bottom wall opposite to the top wall and a second annular side wall that is fastened to the first annular side wall.

[0006] As a further improved technical solution 1 of the utility model, the second annular side wall is provided with two stepped portions, and the insulating body is provided with a convex portion that can abut against the stepped portion to limit the forward / backward rotation. The convex portion abuts against one of the stepped portions to stop the forward rotation of the shielding shell relative to the insulating body; the convex portion abuts against the other of the stepped portions to stop the backward rotation of the shielding shell relative to the insulating body.

[0007] As a first further improved technical solution of the present utility model, one of a clamping block and a clamping groove is provided on the first annular side wall, and the other of the clamping block and the clamping groove is provided on the second annular side wall. The clamping block and the clamping groove cooperate to fasten and fix the first housing and the second housing into one body.

[0008] As a first further improved technical solution of the present utility model, a positioning portion is provided on the first annular side wall. The positioning portion has a first semi-hole with an opening facing the second housing. A limiting portion is provided on the second annular side wall. The limiting portion has a second semi-hole with an opening facing the first housing. The first semi-hole and the second semi-hole cooperate to form a circular hole through which the cable passes out from the inside to the outside.

[0009] As a first further improved technical solution of the present utility model, it further includes a cover body and a first magnetic element. The cover body further includes a top plate and an annular side plate bent and extended from the top plate. Both the top plate and the annular side plate can contact the first magnetic element to limit and hold the first magnetic element.

[0010] As a first further improved technical solution of the present utility model, the cover body includes a plurality of clamping feet continuously extending downward from the annular side plate. Each clamping foot is provided with barbs. The insulating body is provided with a plurality of through holes. The clamping feet respectively extend into the through holes and are interference-positioned by the barbs and the inner wall surface of the through holes, thereby fixing the cover body and the insulating body. The first magnetic element is limited and held between the insulating body and the cover body.

[0011] To achieve the above object, the present utility model adopts the following technical solution two: A connector combination, which includes a board-end connector and the above-mentioned wire-end connector; the board-end connector includes a circuit board, an insulating base, docking terminals, and a docking housing. The docking terminals are held by the insulating base. The docking housing is fixed to the circuit board and covers the insulating base. When the wire-end connector is plugged into the board-end connector, the conductive terminals can be electrically connected to the docking terminals.

[0012] As a second further improved technical solution of the present utility model, the wire-end connector includes a first magnetic element, and the board-end connector includes a second magnetic element. The second magnetic element can be magnetically attracted to the first magnetic element.

[0013] As a second further improved technical solution of the present utility model, the insulating body includes a first anti-fooling structure, and the insulating base includes a second anti-fooling structure. The first anti-fooling structure is one of an anti-fooling rib and an anti-fooling groove, and the second anti-fooling structure is the other of the anti-fooling rib and the anti-fooling groove. The first anti-fooling structure can cooperate with the second anti-fooling structure for limiting.

[0014] Compared with the prior art, in the present utility model, the shielding housing of the wire-end connector drives the cable to rotate forward / backward relative to the insulating body. When the wire-end connector is inserted into the board-end connector so that the conductive terminal can be electrically connected to the docking terminal in the receiving cavity, the insulating body and the insulating base are fixed in position and do not rotate. Then, the shielding housing driving the cable to rotate forward / backward around the axial direction relative to the insulating body will enable the cable to avoid the relatively cramped peripheral position of the board-end connector, thus not causing interference to the installation of the wire-end connector on the board-end connector, facilitating the smooth docking of the wire-end connector on the board-end connector, and improving the convenient use experience of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional combined view of the wire-end connector and the board-end connector in the connector combination of the present utility model;

[0016] Figure 2 is a three-dimensional exploded view of the wire-end connector and the board-end connector in the connector combination of the present utility model;

[0017] Figure 3 is a three-dimensional combined view of the wire-end connector in the connector combination of the present utility model;

[0018] Figure 4 is Figure 3 a three-dimensional exploded view of the wire-end connector;

[0019] Figure 5 is Figure 3 a three-dimensional exploded view of the wire-end connector from another angle;

[0020] Figure 6 is Figure 3 a top view of the wire-end connector;

[0021] Figure 7 is along Figure 6 sectional view taken along line A-A in;

[0022] Figure 8 is along Figure 6 sectional view taken along line B-B in;

[0023] Figure 9 is a three-dimensional combined view of the board-end connector in the connector combination of the present utility model;

[0024] Figure 10 is Figure 9 a three-dimensional exploded view of the board-end connector in;

[0025] Figure 11 is Figure 1 a top view of the connector combination of the present utility model;

[0026] Figure 12 is a cross-sectional view along Figure 11 the C-C line in the middle. Specific Embodiments

[0027] The following will describe in detail the exemplary specific embodiments of the present invention with reference to the accompanying drawings. If there are several specific embodiments, the features in these embodiments can be combined with each other without conflict. When the description involves the accompanying drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The content described in the following exemplary specific embodiments does not represent all embodiments consistent with the present invention; on the contrary, they are only examples of devices, products, and / or methods consistent with some aspects of the present invention recorded in the claims of the present invention.

[0028] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present invention. The singular forms of "a", "the", or "said" used in the specification and claims of the present invention are also intended to include the plural forms unless the context clearly indicates otherwise.

[0029] It should be understood that the terms such as "first", "second", and similar words used in the specification and claims of the present invention do not indicate any order, quantity, or importance, but are only used to distinguish the named features. Similarly, words such as "a" or "one" do not indicate a quantity limitation, but indicate the existence of at least one. Unless otherwise specified, the words such as "front", "rear", "upper", "lower", etc. appearing in the present invention are only for convenience of description and are not limited to a specific position or a spatial orientation. The expression "comprising" or "including" is an open-ended expression, meaning that the elements appearing before "comprising" or "including" cover the elements appearing after "comprising" or "including" and their equivalents, which does not exclude that the elements appearing before "comprising" or "including" may also include other elements. If "several" appears in the present invention, it means two or more.

[0030] Please refer to Figures 1 to 12As shown, the utility model discloses a wire-end connector 100 for docking with a board-end connector 200, comprising: an insulating body 1 having an axial direction; a cable 4 extending perpendicularly to the axial direction, the cable 4 having a plurality of core wires (unnumbered); a shielding shell 3, the shielding shell 3 covering the insulating body 1 and limiting and fixing the cable 4; a plurality of conductive terminals 2, which are fixed by the insulating body 1 and exposed from the shielding shell 3, the conductive terminals 2 corresponding to the core wires one by one and electrically connected; the shielding shell 3 can drive the cable 4 to rotate forward / reversely around the axial direction relative to the insulating body 1. Therefore, the wire-end connector 100 of the utility model enables the cable 4 to avoid the relatively cramped peripheral position of the board-end connector 200, thereby not interfering with the installation of the wire-end connector 100 on the board-end connector 200, facilitating the smooth docking of the wire-end connector 100 on the board-end connector 200, and ensuring that the user can arrange the outwardly extending cables 4 in an orderly and normal manner in a limited space, thereby improving the user experience; the conductive terminal 2 corresponds to the core wire one by one and is fixed by welding, and the core wire is designed with an additional wire length in the shielding shell 3 to reserve a length margin for rotation.

[0031] Please refer to Figure 4 and Figure 5, the axial direction defines the up and down directions. The insulating body 1 includes a base portion 11 and a column 12 protruding upward from the base portion 11 along the axial direction. The shielding housing 3 includes a first housing 31 and a second housing 32. The first housing 31 and the second housing 32 are respectively installed on the upper and lower sides of the insulating body 1 and are fastened and fixed to each other. The first housing 31 includes a top wall 311 and a first annular side wall 312. The second housing 32 includes a bottom wall 321 opposite to the top wall 311 and a second annular side wall 322 that is fastened to the first annular side wall 312. Both the first housing 31 and the second housing 32 include annular side walls. Therefore, it is convenient for the shielding housing 3 to rotate forward / backward relative to the insulating body 1 around the axial direction, making the rotation smooth. And the first housing 31 and the second housing 32 are fastened and fixed to each other. Therefore, the shielding housing 3 composed of the first housing 31 and the second housing 32 rotates relative to the insulating body 1 as a whole. After the first housing 31 and the second housing 32 are respectively installed on the upper and lower sides of the insulating body 1 and are fastened and fixed to each other, the top wall 311 of the first housing 31 is located above the base portion 11, and the bottom wall 321 of the second housing 32 is located below the base portion 11. The first housing 31 and the second housing 32 limit the insulating body 1 in the axial direction. Once the first housing 31 and the second housing 32 are fastened together, the shielding housing 3 has a rotatable connection state on the insulating body 1 and will not easily separate. Unless the fastening effect between the first housing 31 and the second housing 32 is released, the first housing 31 and the second housing 32 can be separated from the upper and lower sides of the insulating body 1.

[0032] Please continue to refer to Figure 4 and Figure 5, two step portions 3220 are provided on the second annular side wall 322. The insulating body 1 is provided with a boss portion 111 that can abut against the step portion 3220 to limit the forward / backward rotation. The boss portion 111 abuts against one of the step portions 3220 to stop the forward rotation of the shielding housing 3 relative to the insulating body 1; the boss portion 111 abuts against the other of the step portions 3220 to stop the backward rotation of the shielding housing 3 relative to the insulating body 1. Specifically, in the present utility model, two of the step portions 3220 are formed by partially cutting the second annular side wall 322, and the arc length of the cut part accounts for about 1 / 2 of the entire second annular side wall 322, defining the range of rotation, which is convenient for normal rotation and return. Therefore, when the present utility model is used, the wire end connector 100 can smoothly rotate with a seamless connection of 180 degrees, ensuring that the user can orderly and normally arrange the outwardly extending cable 4 in a limited space, improving the convenient use experience.

[0033] Please refer to Figure 4 , Figure 5 and Figure 7 , one of a clamping block 3012 and a clamping groove 3021 is provided on the first annular side wall 312, and the other of the clamping block 3012 and the clamping groove 3021 is provided on the second annular side wall 322. The clamping block 3012 and the clamping groove 3021 cooperate to fasten and fix the first housing 31 and the second housing 32 into one body. Therefore, it should be emphasized that during use, the shielding housing 3 formed by the first housing 31 and the second housing 32 rotates relative to the insulating body 1 as a whole, and there is no relative rotational position between the first housing 31 and the second housing 32.

[0034] Please refer to Figures 3 to 5 , a positioning portion 313 is provided on the first annular side wall 312. The positioning portion 313 has a first semi-hole 3130 with an opening facing the second housing 32. A limiting portion 323 is provided on the second annular side wall 322. The limiting portion 323 has a second semi-hole 3230 with an opening facing the first housing 31. The first semi-hole 3130 and the second semi-hole 3230 cooperate to form a circular hole 30 through which the cable 4 passes from the inside to the outside. Therefore, during use, the shielding housing 3 formed by the first housing 31 and the second housing 32 clamps and limits the cable 4 through the cooperation of the positioning portion 313 and the limiting portion 323. The cable 4 naturally receives the drive of the shielding housing 3 when passing through the circular hole 30. That is to say, the shielding housing 3 can drive the cable 4 to rotate forward / backward relative to the insulating body 1 around the axis.

[0035] Please refer toFigures 3 to 8 , the line-end connector 100 of the present utility model further includes a cover body 5 and a first magnetic element 61. The cover body 5 further includes a top plate 51 and an annular side plate 52 bent and extended from the top plate 51. Both the top plate 51 and the annular side plate 52 can contact the first magnetic element 61 to limit and hold the first magnetic element 61. The function of the first magnetic element 61 is to form a matching and automatic alignment with the second magnetic element 62 in the board-end connector 200. Using the principle of opposite-pole magnetic attraction, it can achieve automatic alignment, reliable fixation, and contact conduction. The function of the cover plate 5 is that when the first magnetic element 61 is limited in the limiting space formed by the shielding housing 3 and the insulating body 1, the cover body 5 covers the limiting space to prevent the first magnetic element 61 from falling out of the limiting space. Therefore, the cover body 5 can be understood as an anti-dropping cover.

[0036] Please refer to Figure 4 、 Figure 5 and Figure 8 , the cover body 5 includes a plurality of legs 53 extending further downward from the annular side plate 52. Each leg 53 is provided with a barb 530. The insulating body 1 is provided with a plurality of through holes 110. The legs 53 extend into the through holes 110 one by one and are interference-positioned by the barbs 530 and the inner wall surface of the through holes 110, thereby fixing the cover body 5 to the insulating body 1. That is to say, like the conductive terminal 2, the cover body 5 is fixed to the insulating body 1 as a whole and is immovable. Therefore, the cover body 5 does not rotate relative to the insulating body 1. That is to say, during the forward / backward rotation of the shielding housing 3 around the axis relative to the insulating body 1, there is relative movement between the cover body 5 and the shielding housing 3. It is not difficult to understand that the cover body 5 and the shielding housing 3 are separated from each other and not fixed.

[0037] Please refer to Figure 3 、 Figure 4 and Figure 7 、 Figure 8, in the shielding housing 3, the bottom wall 321 is a non-porous plate, the top wall 311 is a ring with a first opening 301 in the middle, the cover body 5 is attached to the inner wall surface of the first shielding housing 31 forming the first opening 301, and the first shielding housing 31 and the second shielding housing 32 rotate together relative to the cover body 5. Specifically, the first magnetic element 6 is sleeved on the column 12 and abuts against the base 11, and both the top plate 51 and the side plate 52 are in contact with the first magnetic element 6. Therefore, the first magnetic element 61 is limited and held between the insulating body 1 and the cover body 5, preventing it from falling off. Since the conductive terminal 2 is held by the insulating body 1 and exposed from the shielding housing 3, and as mentioned above, the cover body 5 is a lid to prevent the first magnetic element 6 from falling off, the cover body 5 needs to have a second opening 102 corresponding to the first opening 101 up and down. Only when the column 12 passes through the first opening 101 and the second opening 102 can the conductive terminal 2 be exposed from the column 12 to be docked with the docking terminal 9 in the board-end connector 200.

[0038] Please refer to Figures 1 to 12 , the present utility model further relates to a connector combination, which includes the above-mentioned wire-end connector 100 and board-end connector 200. The board-end connector 200 includes a circuit board 7, an insulating base 8, a docking terminal 9, and a docking housing 10. The docking terminal 9 is held by the insulating base 8, and the docking housing 10 is fixed to the circuit board 7 and covers the insulating base 8. When the wire-end connector 100 is plugged into the board-end connector 200, the conductive terminal 2 can be electrically connected to the docking terminal 9. Specifically, please refer to Figures 9 to 12 , the insulating base 8 is provided with a receiving cavity 80, the docking housing 10 is provided with a third opening 103, the third opening 103 corresponds to the receiving cavity 80 up and down. When the wire-end connector 100 is plugged into the board-end connector 200, the conductive terminal 2 can be electrically connected to the docking terminal 9 in the receiving cavity 80, that is, the column 12 extends into the receiving cavity 80 to realize the electrical connection between the conductive terminal 2 and the docking terminal 9.

[0039] Please refer to Figure 10 and Figure 12, the wire-end connector 100 includes a first magnetic element 61, the board-end connector 200 includes a second magnetic element 62, and the second magnetic element 62 can be magnetically attracted to the first magnetic element 61. As described above, the first magnetic element 61 and the second magnetic element 62 form a matching and automatic alignment, and by using the principle of magnetic attraction between opposite poles, the wire-end connector 100 and the board-end connector 200 are automatically aligned, so as to achieve reliable holding and contact conduction between the conductive terminal 2 and the docking terminal 9.

[0040] Please refer to Figure 4 and Figure 10 , the insulating body 1 includes a first anti-misassembly structure 121, and the insulating base 8 includes a second anti-misassembly structure 81. In the specific implementation manner, the first anti-misassembly structure 121 is an anti-misassembly rib formed on the column 12 of the insulating body 1, and the second anti-misassembly structure 81 is an anti-misassembly groove formed on the insulating base 8. In other implementation manners, the positions of the anti-misassembly rib and the anti-misassembly groove on the insulating body 1 and the insulating base 8 can be interchanged. Therefore, the first anti-misassembly structure 121 is one of the anti-misassembly rib and the anti-misassembly groove, the second anti-misassembly structure 81 is the other of the anti-misassembly rib and the anti-misassembly groove, and the first anti-misassembly structure 121 can cooperate with the second anti-misassembly structure 81 to play a role of anti-misassembly and limit, so as to ensure the correct docking between the conductive terminal 2 and the docking terminal 9.

[0041] In summary, the shielding housing 3 can drive the cable 4 to rotate forward / backward relative to the insulating body 1 around the axial direction. Therefore, the present invention first enables the cable 4 to avoid the relatively cramped peripheral position of the board-end connector 200, so that it will not interfere with the installation of the wire-end connector 100 on the board-end connector 200, which is beneficial to the smooth docking of the wire-end connector 100 on the board-end connector 200, ensuring that the user can place the outward-extending cable 4 in an orderly and normal manner in a limited space, and improving the use experience; secondly, the present invention further forms a matching and automatic alignment through the first magnetic element 61 and the second magnetic element 62, and by using the principle of magnetic attraction between opposite poles, the wire-end connector 100 and the board-end connector 200 are automatically aligned, so as to achieve reliable holding and contact conduction between the conductive terminal 2 and the docking terminal 9; thirdly, the present invention further adopts a side anti-misassembly structure with different design dimensions to ensure the correct docking between the conductive terminal 2 and the docking terminal 9; finally, when the present invention is matched, by forming a metal-to-metal contact surface between the shielding housing 3 and the docking housing 10, it maximally ensures that during the electrical connection process, it can withstand high-intensity impacts without damage.

[0042] The above embodiments are only used to illustrate the present utility model and do not limit the technical solutions described in the present utility model. The understanding of the present utility model should be based on those skilled in the relevant technical field. Although this specification has described the present utility model in detail with reference to the above embodiments, those of ordinary skill in the art should understand that those skilled in the relevant technical field can still make modifications or equivalent replacements to the present utility model. All technical solutions and their improvements that do not depart from the spirit and scope of the present utility model shall be covered within the scope of the claims of the present utility model.

Claims

1. A wire-end connector, characterized in that: Comprising: An insulating body (1) having an axis; A cable (4) extending perpendicular to the axis, the cable (4) having a plurality of core wires; A shielding housing (3) that wraps the insulating body (1) and limits and holds the cable (4); A plurality of conductive terminals (2), held by the insulating body (1) and exposed from the shielding housing (3), the conductive terminals (2) corresponding to the core wires one by one and being electrically connected; The shielding housing (3) is capable of driving the cable (4) to rotate forward / backward relative to the insulating body (1) around the axis.

2. The wire end connector according to claim 1, wherein: The axis defines an up-down direction, the shielding housing (3) includes a first housing (31) and a second housing (32), the first housing (31) and the second housing (32) are respectively installed from the upper and lower sides of the insulating body (1) and are fastened and fixed to each other; the first housing (31) includes a top wall (311) and a first annular side wall (312), and the second housing (32) includes a bottom wall (321) opposite to the top wall (311) and a second annular side wall (322) fastened to the first annular side wall (312).

3. The wire end connector according to claim 2, wherein: The second annular side wall (322) is provided with two stepped portions (3220), and the insulating body (1) is provided with a boss portion (111) that can abut against the stepped portion (3220) to limit the forward / backward rotation. The boss portion (111) abuts against one of the stepped portions (3220) to stop the forward rotation of the shielding housing (3) relative to the insulating body (1); the boss portion (111) abuts against the other of the stepped portions (3220) to stop the backward rotation of the shielding housing (3) relative to the insulating body (1).

4. The wire-end connector according to claim 2, characterized in that: One of a clamping block (3012) and a clamping groove (3021) is provided on the first annular side wall (312), and the other of the clamping block (3012) and the clamping groove (3021) is provided on the second annular side wall (322). The clamping block (3012) and the clamping groove (3021) cooperate to fasten and fix the first housing (31) and the second housing (32) into one body.

5. The wire end connector according to claim 2, characterized in that: The first annular side wall (312) is provided with a positioning portion (313), the positioning portion (313) has a first half-hole (3130) with an opening facing the second housing (32), the second annular side wall (322) is provided with a limiting portion (323), the limiting portion (323) has a second half-hole (3230) with an opening facing the first housing (31), and the first half-hole (3130) and the second half-hole (3230) cooperate to form a circular hole (30), and the circular hole (30) allows the cable (4) to pass through from the inside to the outside.

6. The wire-end connector according to claim 1, characterized in that: It further includes a cover body (5) and a first magnetic element (61). The cover body (5) further includes a top plate (51) and an annular side plate (52) bent and extended from the top plate (51). Both the top plate (51) and the annular side plate (52) can contact the first magnetic element (61) to limit and hold the first magnetic element (61).

7. The wire end connector according to claim 6, characterized in that: The cover body (5) includes a plurality of feet (53) continuously extending downward from the annular side plate (52). Each of the feet (53) is provided with barbs (530). The insulating body (1) is provided with a plurality of through holes (110). The feet (53) are inserted into the through holes (110) one by one and are interference-positioned by the barbs (530) and the inner wall surface of the through holes (110), thereby fixing the cover body (5) to the insulating body (1). The first magnetic element (61) is limited and held between the insulating body (1) and the cover body (5).

8. A connector combination, comprising a board-end connector (200) and a wire-end connector (100) according to any one of claims 1 to 7 above; characterized in that: The board-end connector (200) includes a circuit board (7), an insulating base (8), a docking terminal (9), and a docking housing (10). The docking terminal (9) is held by the insulating base (8). The docking housing (10) is fixed to the circuit board (7) and covers the insulating base (8). When the wire-end connector (100) is inserted into the board-end connector (200), the conductive terminal (2) can be electrically connected to the docking terminal (9).

9. The connector combination according to claim 8, wherein: The wire-end connector (100) includes a first magnetic element (61). The board-end connector (200) includes a second magnetic element (62). The second magnetic element (62) can be magnetically attracted to the first magnetic element (61).

10. The connector combination according to claim 8, wherein: The insulating body (1) includes a first anti-fooling structure (121). The insulating base (8) includes a second anti-fooling structure (81). The first anti-fooling structure (121) is one of an anti-fooling rib and an anti-fooling groove. The second anti-fooling structure (81) is the other of the anti-fooling rib and the anti-fooling groove. The first anti-fooling structure (121) can cooperate with the second anti-fooling structure (81) for positioning.

Images