TWI709283B - Coaxial cable connector - Google Patents

Abstract

A coaxial cable connector detachably jackets a coaxial cable. The coaxial cable connector includes a metal sleeve, a clamping sleeve, a coupling sleeve, and an internal conductive ring. The clamping sleeve is connected to a first end portion of a main body of the metal sleeve for being squeezed to deform radially to tightly clamp the coaxial cable. The coupling sleeve is disposed at a second end portion of the main body. The internal conductive ring is disposed in a ring containing space of the main body. When the main body jackets the coaxial cable, the metal sleeve is in contact with an external surface of a metal layer of the coaxial cable via the internal conductive ring but not in contact with an internal surface of the metal layer to establish electrical connection between the metal sleeve and the metal layer.

Description

Coaxial cable connector

The present invention relates to a coaxial cable connector, in particular to a coaxial cable connector resistant to wire aging.

Generally speaking, coaxial cable connectors are mainly used to match coaxial cables to electrically connect between electronic devices to establish a signal transmission path between the connected electronic devices. The type of transmission signal is mainly radio frequency (Radio Frequency) signal. The higher the frequency of the RF signal, the higher the sensitivity to other frequency noise from the outside, which means that the higher the frequency of the RF signal, the more likely it is to be affected by noise. Therefore, the electromagnetic shielding requirements of coaxial cables and connectors are more important than the higher frequency radio frequency signals.

The best known electromagnetic shielding method is to completely enclose a space with a metal body, so that the electromagnetic signals in the space are completely isolated from the electromagnetic signals outside the space, so as to achieve the best electromagnetic shielding. For example, in the prior art, as shown in Figures 1 and 2, the conventional coaxial cable assembly 1 includes a coaxial cable 2 and a coaxial cable connector 3, and the coaxial cables 2 are ring-shaped sequentially from the center to the outside. A central conductor 10, an insulating layer 12, a metal foil layer 14, a metal braided layer 16, and a protective layer 18 are formed by covering. The metal foil layer 14 and the metal braided layer 16 can pass through the coaxial cable 2 when the radio frequency signal When providing electromagnetic interference (Electrormagnetic Interference, EMI) and radio frequency interference (Radio Frequency Interference, RFI) shielding protection. The coaxial cable connector 3 includes a metal sleeve 20, a coupling sleeve 22, and a wire clamp tube 24. The metal sleeve 20 has a shunt arm tube 26 and a sleeve body 28. The wire clamp tube 24 includes a metal An inner tube 30 and a metal outer tube 32.

In connection, after the coaxial cable 2 is installed from the rear end of the coaxial cable connector 3, use Use a common coaxial cable pressing tool to push the metal outer tube 32 axially toward the front end of the metal inner tube 30 to squeeze the metal inner tube 30, so that the metal inner tube 30 is radially deformed and clamps the metal braid of the coaxial cable 2 Layer 16 and protective layer 18 (as shown in Figure 2). The above structure uses the elasticity of the protective layer 18 to extrude the metal braid layer 16, so that the metal braid layer 16 can stably contact the shunt arm tube 26 of the coaxial cable connector 3 due to the bias generated by the elasticity of the protective layer 18, thereby indirectly making the coaxial cable The metal braided layer 16 on the cable 2 and the coaxial cable connector 3 have a common polarity, thereby producing a good radio frequency shielding protection effect, and improving the insertion loss and reflection loss of the signal after passing through the coaxial cable connector 3. Return loss).

However, since the plastic material will gradually become brittle after being used for a long time and under the influence of the environment, that is to say, the biasing force generated by the protective layer will become weaker and weaker with the use time and affect the metal braid on the coaxial cable The common polarity between the layer and the coaxial cable connector causes the coaxial cable connector to have worse and worse data on the shielding protection, insertion loss, and reflection loss of the radio frequency signal.

Therefore, the object of the present invention is to provide a coaxial cable connector resistant to wire aging to solve the above-mentioned problems.

According to one embodiment, the coaxial cable connector of the present invention is detachably sleeved on a coaxial cable, and the coaxial cable connector includes a metal sleeve, a wire clamp tube, a coupling sleeve, and a conductive inner sleeve ring. The metal sleeve has a sleeve body, and a sleeve ring accommodating space is formed in the sleeve body. The wire clamping tube is connected to a first end of the sleeve body, and the wire clamping tube is squeezed to generate radial deformation to tightly clamp the coaxial cable. The coupling sleeve is arranged at a second end of the sleeve body. The conductive inner collar is arranged in the collar accommodating space, and the metal sleeve does not contact an inner surface of a metal coating layer of the coaxial cable when the sleeve body is sleeved on the coaxial cable and passes through the conductive The inner sleeve ring contacts an outer surface of the metal coating layer of the coaxial cable to establish an electrical connection between the metal sleeve and the metal coating layer.

Another embodiment of the present invention is to remove the conductive inner ring and add a conductive outer ring It is sheathed on the branch arm tube of the metal sleeve, and the rest of the structure-related parts are similar to the above-mentioned embodiment, and will not be repeated here. When the coaxial cable connector is sleeved on the coaxial cable, the conductive outer ring provides a stable elastic bias to contact and abut between the metal braid and the shunt arm tube, so that the coaxial cable connector and the coaxial cable can be connected Good and stable common electrical polarity.

In this way, the present invention can effectively solve the problem mentioned in the prior art that the common electrical polarity between the coaxial cable connector and the metal braid of the coaxial cable is affected due to the embrittlement of the plastic protective layer, thereby improving the coaxial cable. The performance of cable connectors in terms of radio frequency signal shielding protection, insertion loss and reflection loss, which greatly improves the signal transmission quality of coaxial cable connectors and produces anti-cord aging effects.

1: Coaxial cable assembly

2, 102, 200: coaxial cable

10, 106: center conductor

12, 108: insulating layer

14, 110: metal foil layer

16, 112: metal braid

18, 114: protective layer

26, 126: shunt arm tube

30: Metal inner tube

32: Metal outer tube

111, 207: outer side

113, 209: inner side

119: Internal thread structure

120: Conductive outer ring

122, 406: conductive inner ring

125, 129, 214: ring housing space

127: Bevel front end

130, 134: Cut off groove

132, 136: curved strips

138: inner casing

140: Outer tube

142: Socket section

144: tapered pipe section

146: Axial slotting

A, B, C: arrow

a, b: elastic bias

201, 203: electronic equipment

204: The first metal braid

206: second metal braid

254: signal processing circuit structure

258, 308: Metal shell

306: Connector body

408: tongue

410: Contact Arm

412: first limit flange

414: Connector body

416: inner limit tube

417: groove

418: inner flange

420: limit pipe section

422: connecting pipe section

424: second limit flange

426: Extension arm

428: Bending Arm

P ₉ : Pivot end

3. 104, 104’, 202, 250, 300, 400: coaxial cable connector

20, 116, 208, 252, 302, 402: metal casing

22, 118, 304, 404: coupling sleeve

24, 124, 124’, 210: wire clamp tube

28, 128, 212, 256: casing body

P ₁ , P ₃ , P ₅ , P ₇ : first end

P ₂ , P ₄ , P ₆ , P ₈ : second end

Figure 1 is a schematic diagram of an axial cross-section of a prior art coaxial cable.

Figure 2 is a schematic view of the axial cross-section of the prior art coaxial cable assembly.

FIG. 3 is a schematic diagram of an axial cross-section of a coaxial cable and a coaxial cable connector according to an embodiment of the present invention.

Figure 4 is an exploded schematic diagram of the coaxial cable and coaxial cable connector shown in Figure 3.

Figure 5 is an enlarged schematic view of the conductive outer ring of Figure 4 from another viewing angle.

Fig. 6 is an enlarged schematic diagram of the conductive inner collar of Fig. 4 from another viewing angle.

Figure 7 is a schematic cross-sectional view of the coaxial cable of Figure 3 fixed in the coaxial cable connector.

FIG. 8 is a schematic diagram of an axial cross-section of a coaxial cable and a coaxial cable connector according to another embodiment of the present invention.

Figure 9 is an exploded schematic diagram of the coaxial cable and coaxial cable connector of Figure 8.

Figure 10 is a schematic cross-sectional view of the coaxial cable of Figure 8 fixed in the coaxial cable connector.

Figure 11 shows the shaft of a coaxial cable and a coaxial cable connector according to another embodiment of the present invention Schematic diagram of the cross section

Figure 12 is a schematic cross-sectional view of the coaxial cable of Figure 11 fixed in the coaxial cable connector.

Figure 13 is a partially enlarged schematic view of the metal sleeve of Figure 12.

Figure 14 is a schematic view of an axial cross-section of a coaxial cable connector according to another embodiment of the present invention.

Figure 15 is a schematic cross-sectional view of the coaxial cable connector of Figure 14 fixed to the coaxial cable.

Fig. 16 is a schematic diagram of an axial cross-section of a coaxial cable connector according to another embodiment of the present invention.

Figure 17 is an exploded schematic diagram of a coaxial cable connector according to another embodiment of the present invention.

Figure 18 is a schematic view of the axial cross-section of the coaxial cable connector of Figure 17.

Figure 19 is a schematic cross-sectional view of the coaxial cable connector of Figure 18 fixed to the coaxial cable.

Please refer to Figures 3 and 4. Figure 3 is an axial cross-sectional view of a coaxial cable 102 and a coaxial cable connector 104 according to an embodiment of the present invention, and Figure 4 is the coaxial cable of Figure 3 The exploded schematic diagram of the cable 102 and the coaxial cable connector 104, as shown in Figures 3 and 4, the coaxial cable 102 includes a central conductor 106, an insulating layer 108, a metal foil layer 110, and a metal braid layer 112 (in In this embodiment, the combined configuration of the metal foil layer 110 and the metal braid layer 112 can be regarded as the metal coating layer of the coaxial cable 102 to provide electromagnetic interference and radio frequency interference shielding protection when the radio frequency signal passes through the coaxial cable 102), and A protective layer 114 (preferably composed of plastic material, but not limited to this), the coaxial cable connector 104 is detachably sleeved on the coaxial cable 102 and includes a metal sleeve 116 and a coupling sleeve 118 , A conductive outer ring 120, a conductive inner ring 122, and a wire clamping tube 124.

It can be seen from Figure 3 that the insulating layer 108, the metal foil layer 110, the metal braid layer 112, and the protective layer 114 are sequentially coated on the central conductor 106 to form the coaxial cable 102. As for the wire coating layer of the coaxial cable 102 The related description of the structural design is common in the prior art, so it will not be repeated here.

In terms of the structural design of the coaxial cable connector 104, it can be seen from Figures 3 and 4 that the metal sleeve 116 has a shunt arm tube 126 and a sleeve body 128, and the wire clamp tube 124 is sleeved on the sleeve body 128 A first end P ₁ , and the shunt arm tube 126 is formed by axially extending from the first end P _{1 of the} sleeve body 128, whereby when the coaxial cable connector 104 is sleeved on the coaxial cable 102, the shunt The arm tube 126 can penetrate between the metal foil layer 110 and the metal braided layer 112, so that the sleeve body 128 is sleeved on the metal foil layer 110 and the metal braided layer 112 is sleeved on the shunt arm tube 126. In this embodiment Among them, the split arm tube 126 may preferably be formed with an inclined front end 127 (but not limited to this), so as to guide the split arm tube 126 to penetrate between the metal foil layer 110 and the metal braid layer 112 more smoothly. . The coupling sleeve 118 can be disposed at a second end P _{2 of the} sleeve body 128. In practical applications, the coupling sleeve 118 can preferably have a hexagonal nut structure and have an internal thread structure 119 (But not limited to this), in order to facilitate the coupling of the coaxial cable connector 104 to an electronic device capable of receiving coaxial cable signals via the coupling sleeve 118 in a screw-locking manner (such as a digital TV set top box or a cable modem ).

As for the structural design of the conductive outer ring 120 and the conductive inner ring 122, please refer to Figure 3, Figure 4, Figure 5, and Figure 6. Figure 5 is the conductive outer ring 120 of Figure 4 in another An enlarged schematic view of one view, and Fig. 6 is an enlarged schematic view of the conductive inner ring 122 of Fig. 4 in another view. From Figs. 3, 4, 5, and 6, it can be seen that the conductive outer ring 120 It is sleeved on the shunt arm tube 126, and the conductive inner ring 122 is disposed in the sleeve body 128. As shown in FIG. 3, the shunt arm tube 126 can preferably be formed with a set of ring accommodating spaces 125. Used for accommodating the conductive outer ring 120 and axially limiting the conductive outer ring 120 to prevent the conductive outer ring 120 from falling off, a ring accommodating space 129 is formed in the sleeve body 128 to accommodate the conductive inner ring 122 And the conductive inner sleeve ring 122 is axially limited to prevent the conductive inner sleeve ring 122 from falling off. In more detail, in this embodiment, a cutting groove 130 may be preferably formed on the conductive outer ring 120 so that the conductive outer ring 120 has a C-shaped ring shape and can be radially deformed (but not limited to this) , In order to facilitate the conductive outer ring 120 to be elastically sleeved on the shunt arm tube 126, and a plurality of arc-shaped strips 132 can preferably be formed on the conductive outer ring 120 in a radially arranged and relatively outwardly curved manner, One of the conductive outer ring 120 The number of strips and the curvature of the strips may vary depending on the actual application requirements of the coaxial cable connector 104, and are not limited to Figure 5, so that the conductive outer ring 120 can have proper radial elasticity, thereby ensuring the conductive outer ring 120 When the coaxial cable connector 104 is sleeved on the coaxial cable 102, it can surely contact and abut between the shunt arm tube 126 and the metal braid 112.

Similarly, in this embodiment, a cutting groove 134 can be preferably formed on the conductive inner ring 122 so that the conductive inner ring 122 has a C-shaped ring shape and can be radially deformed (but not limited to this) , In order to facilitate the conductive inner sleeve ring 122 to be elastically arranged in the sleeve ring accommodating space 129, and a plurality of arc-shaped strips 136 can preferably be formed in the conductive inner sleeve in a radially arranged and relatively inwardly curved manner On the ring 122, the number of strips and the curvature of the strips on the conductive inner sleeve ring 122 may vary depending on the actual application requirements of the coaxial cable connector 104, and it is not limited to Figure 6, so that the conductive inner sleeve ring 122 It can have proper radial elasticity, so as to ensure that the conductive inner collar 122 can contact and abut between the sleeve body 128 and the metal foil layer 110 when the coaxial cable connector 104 is sleeved on the coaxial cable 102.

It should be noted that the structural design of the conductive outer ring and the conductive inner ring is not limited to the above embodiment, that is, as long as the conductive outer ring is used to contact the shunt arm tube of the metal sleeve and the metal braid of the coaxial cable The design of the collar contact between the layers and between the sleeve body of the metal sleeve and the metal foil layer of the coaxial cable by using the conductive inner collar to contact the metal sleeve is within the protection scope of the present invention. For example, In another embodiment, the plurality of arc-shaped strips of the conductive outer ring can be formed in a radial arrangement and relatively inwardly curved. As for other derivative embodiments (for example, the plurality of arc-shaped strips of the conductive inner ring It can be arranged radially and formed in a relatively outwardly curved manner. The conductive outer ring is a continuous ring structure and is sleeved between the shunt arm tube and the metal braid in a circular plane contact.) The relevant description can be Refer to the above-mentioned embodiment and analogy, and will not be repeated here. In addition, the conductive outer ring and the conductive inner ring can be alternatively configured elements. For example, in another embodiment, the coaxial cable connector can only be configured with the conductive outer ring in the shunt of the metal sleeve The arm tube contacts the shunt arm tube and establishes a metal sleeve when the shunt arm tube penetrates between the insulating layer and the metal braid of the coaxial cable The electrical connection between the tube and the metal braided layer (in this configuration, the coaxial cable matched with the coaxial cable connector can optionally have or do not have a metal foil layer), or only a conductive inner sleeve can be placed on the metal The collar accommodating space 129 of the sleeve is used to electrically connect the metal foil layer and the metal sleeve.

The following is a detailed description of the connection operation between the coaxial cable 102 and the coaxial cable connector 104. Please refer to Figures 3 and 7. Figure 7 shows the coaxial cable 102 fixed in the coaxial cable connector 104 in Figure 3 The schematic cross-sectional view, as shown in Figures 3 and 7, when the coaxial cable 102 is inserted to the position shown in Figure 7 along the arrow A shown in Figure 3 relative to the coaxial cable connector 104, the shunt arm tube 126 can penetrate between the metal foil layer 110 and the metal braid layer 112, so that the sleeve body 128 is sleeved on the metal foil layer 110 and the metal braid layer 112 is sleeved on the shunt arm tube 126, and at the same time, sleeve The conductive outer ring 120 on the shunt arm tube 126 can use its radial elasticity to reliably contact and abut between the metal braid 112 and the shunt arm tube 126, so that the metal braid 112 and the metal sleeve 116 can be produced well. And stable electrical connection, and the conductive inner ring 122 arranged in the sleeve body 128 can use its radial elasticity to reliably contact and abut on the outer side 111 of the sleeve body 128 and the metal foil layer 110 ( Here, the outer surface 111 of the metal foil layer 110 can be regarded as the outer surface of the metal coating layer of the coaxial cable 102), so that the metal sleeve 116 contacts the outer surface 111 of the metal foil layer 110 through the conductive inner ring 122, but Do not touch the inner side 113 of the metal foil layer 110 (here the inner side 113 of the metal foil layer 110 can be regarded as the inner side of the metal coating layer of the coaxial cable 102), that is, the present invention uses the metal sleeve 116 A socket design that does not touch the inner surface of the metal coating of the coaxial cable 102 but contacts the outer surface of the metal coating of the coaxial cable 102 (simplifies the assembly operation between the coaxial cable connector 104 and the coaxial cable 102), This makes the metal sleeve 116 and the metal foil layer 110 have a good and stable electrical connection. Finally, in practical applications, since the coaxial cable 102 and the coaxial cable connector 104 are still loose, it is possible to further use a coaxial cable fixing jig (such as a crimping tool) to move the wire clamping tube 124 along the diameter Squeeze, so that the wire clamping tube 124 is squeezed to produce radial deformation to clamp on the protective layer 114 (as shown in Figure 7), so that the coaxial cable connector 104 and the coaxial cable 102 can be The effect of firmly joining and not being released.

The conductive outer ring provides an elastic bias to contact and abut between the metal braid layer and the shunt arm tube, and the conductive inner ring provides an elastic bias to contact and abut the electrical connection between the sleeve body and the metal foil layer Design, the coaxial cable connector and the coaxial cable can produce good and stable common polarity. In this way, the present invention can effectively solve the coaxial cable connection caused by the embrittlement of the plastic protective layer mentioned in the prior art The common electrical polarity between the metal braid of the coaxial cable and the coaxial cable is affected, so as to improve the performance of the coaxial cable connector in the shielding protection, insertion loss and reflection loss of the radio frequency signal, thereby greatly improving the coaxial cable connection The signal transmission quality of the device and the anti-aging effect of the wire.

It is worth mentioning that the structural design of the wire clamp tube is not limited to the single-piece clamp tube design used in the above embodiment, that is, as long as it can be used to clamp the coaxial cable to fix the coaxial cable connector The design of the wire clamp tube on the coaxial cable is applicable to the present invention. For example, the present invention can be changed to a two-piece clamp tube design. Please refer to Figure 8, Figure 9, and Figure 10, Figure 8. Fig. 9 is an exploded schematic view of the coaxial cable 102 and the coaxial cable connector 104’ of Fig. 8 according to another embodiment of the present invention. Figure 10 is a schematic cross-sectional view of the coaxial cable 102 fixed in the coaxial cable connector 104' of Figure 8. The components described in this embodiment are the same as those described in the above embodiments, indicating that they have similar The function or structure of, will not be repeated here. As shown in Figures 8, 9, and 10, the coaxial cable connector 104' is detachably sleeved on the coaxial cable 102 and includes a metal sleeve 116, a coupling sleeve 118, a conductive outer ring 120, Conductive inner sleeve ring 122 and a wire clamp tube 124'. In this embodiment, the wire clamp tube 124' may include an inner sleeve 138 and an outer sleeve 140. The inner sleeve 138 is sleeved on the sleeve body 128 At the first end P ₁ , the outer sleeve 140 may have a sleeve pipe section 142 and a tapered pipe section 144, wherein the inner sleeve 138 may preferably be formed with an axial slot 146 (but not limited to this). This makes the inner sleeve 138 easier to deform radially.

Through the above design, when the coaxial cable 102 is inserted along the arrow B shown in Figure 8 relative to the coaxial cable connector 104' to the position shown in Figure 10, the shunt arm tube 126 can penetrate the metal foil layer 110 and the metal braided layer 112 so that the sleeve body 128 is sleeved on the metal foil layer 110 and the metal braided layer 112 is sleeved on the shunt arm tube 126. At the same time, the conductive sleeve is sleeved on the shunt arm tube 126 The outer ring 120 can contact and abut between the metal braid layer 112 and the shunt arm tube 126, and the conductive inner ring 122 provided in the sleeve body 128 can contact and abut the sleeve body 128 and the metal foil layer 110 between.

In practical applications, since the coaxial cable 102 and the coaxial cable connector 104' are still in a loose state, it is possible to further use a coaxial cable pressing jig to move the outer sleeve 140 along the arrow shown in Figure 10. C is pushed toward the inner sleeve 138 so that the sleeve pipe section 142 is sleeved on the inner sleeve 138. Next, as the outer sleeve 140 continues to push inward, the tapered pipe section 144 begins to squeeze the inner sleeve 138, making the inner sleeve 138 The sleeve 138 is deformed radially to be tightly clamped on the protective layer 114 (as shown in FIG. 10), so that the coaxial cable connector 104' and the coaxial cable 102 can be firmly joined without being released.

In addition, the contact design between the conductive inner collar and the coaxial cable may not be limited to the above-mentioned embodiment. For example, the present invention can adopt the configuration of omitting the shunt arm tube instead of using the conductive inner collar to directly contact the coaxial cable. For the design of the metal braid, please refer to Figures 11 and 12. Figure 11 is an axial cross-sectional view of a coaxial cable 200 and a coaxial cable connector 202 according to another embodiment of the present invention. The figure is a schematic cross-sectional view of the coaxial cable 200 fixed in the coaxial cable connector 202 in Fig. 11. The components described in this embodiment are the same as those described in the above embodiments, indicating that they have similar functions or The structure will not be repeated here. As shown in Figures 11 and 12, the coaxial cable connector 202 is suitable for establishing a front-end device and a back-end device (ie, electronic equipment 201 and electronic equipment 203) after being fixedly connected to the coaxial cable 200. The line indicates the communication link. The communication link referred to here generally refers to the radio frequency signal link. Electronic equipment 201 and electronic equipment 203 generally refer to devices, facilities or connectors that transmit, receive or process radio frequency signals, such as cable television Distributors, filters or amplifiers used in the field, etc. The connection between the coaxial cable 200 and the electronic device 201 and the coaxial cable connection The connection between the connector 202 and the electronic device 203 can be achieved by the direct connection commonly used in the prior art or indirectly by other devices, equipment or connectors, so the coaxial cable 200 and the electronic device 201 The connection design and the connection design between the coaxial cable connector 202 and the electronic device 203 are not within the scope of the present invention.

The coaxial cable 200 includes a central conductor 106, an insulating layer 108, a first metal braid 204, a second metal braid 206, and a protective layer 114 (in this embodiment, the first metal braid 204 and the second metal braid The combined configuration of the layer 206 and the protective layer 114 can be regarded as the metal coating of the coaxial cable 200 to provide electromagnetic interference and radio frequency interference shielding protection when the radio frequency signal passes through the coaxial cable 200), the insulating layer 108 and the first metal braid 204 And the protective layer 114 is sequentially wrapped on the central conductor 106, the second metal braided layer 206 is formed extending forward from the first metal braided layer 204 and is folded back relative to the protective layer 114, so that the protective layer 114 is sandwiched between the first Between a metal braid 204 and a second metal braid 206, as for other related descriptions regarding the design of the wire coating structure of the coaxial cable 200 (for example, the wire coating structure, material, and arrangement of the coaxial cable 200), It is common in the prior art, and will not be repeated here.

The coaxial cable connector 202 is detachably sleeved on the coaxial cable 200. The coaxial cable connector 202 includes a metal sleeve 208, a wire clamp tube 210, a coupling sleeve 118, and a conductive inner sleeve ring 122 (preferably It is formed by a sheet stamping process, but not limited to this). The metal sleeve 208 has a sleeve body 212. A set of ring accommodating space 214 is formed in the sleeve body 212 for accommodating the conductive inner ring 122 and axially limits the conductive inner ring 122 to prevent the conductive inner ring The collar 122 falls off. In this embodiment, the wire clamp tube 210 is preferably integrally molded line of one embodiment of the sleeve body 212 from a first end portion extending axially P ₃ is formed (but not limited thereto, the above-described embodiments which can The related description of the mentioned two-piece clamping pipe design can be deduced by analogy, so I will not repeat it here). The coupling sleeve 118 can be disposed at a second end P _{4 of the} sleeve body 212 to facilitate the coupling of the coaxial cable connector 202 to an electronic device 203 (such as a digital device) capable of receiving coaxial cable signals via the coupling sleeve 118. TV box or cable modem).

Through the above design, when the coaxial cable 200 is inserted into the position shown in Fig. 12 with respect to the coaxial cable connector 202, the conductive inner collar 122 provided in the sleeve body 212 can reliably utilize its radial elasticity. The outer surface 207 of the sleeve body 212 and the second metal braid 206 is in contact with each other (here the outer surface 207 of the second metal braid 206 can be regarded as the outer surface of the metal coating of the coaxial cable 200), so that The metal sleeve 208 contacts the outer side surface 207 of the second metal braid layer 206 through the conductive inner ring 122, but does not contact an inner side surface 209 of the second metal braid layer 206 (here the inner side surface 209 of the second metal braid layer 206 is visible Is the inner surface of the metal coating of the coaxial cable 200), that is, the present invention uses the metal sleeve 208 not to contact the inner surface of the metal coating of the coaxial cable 200 but contact the metal coating of the coaxial cable 200 The socket design on the outer side (which can simplify the assembly operation between the coaxial cable connector 202 and the coaxial cable 200), so that the metal sleeve 208 and the second metal braid 206 and the first metal braid 204 are well and stable The electrical connection. In more detail, please refer to Fig. 13, which is a partial enlarged schematic view of the metal sleeve 208 in Fig. 12. As shown in Fig. 13, the second metal braided layer 206 is subjected to an elastic bias generated by the protective layer 114. And the elastic bias b generated by the conductive inner ring 122 is clamped to each other (the direction shown by the arrow in the figure indicates the direction of biasing force), and because the conductive inner ring 122 and the sleeve body 212 are electrically connected, indirectly The conductive inner sleeve ring 122 establishes an electrical connection between the metal sleeve 208 and the second metal braided layer 206 and the first metal braided layer 204 of the coaxial cable 200.

With the passage of time, when the protective layer 114 of the coaxial cable 200 is affected by environmental factors (temperature, humidity, etc.) and time, and the elastic bias a declines, the elastic bias b generated by the conductive inner collar 122 It can compensate the elastic bias a of the protective layer 114 decayed due to aging, so as to ensure that the second metal braid 206 and the first metal braid 204 of the coaxial cable 200 can still maintain a good and stable electrical connection with the metal sleeve 208 The connection interface between the metal sleeve 208 and the coaxial cable 200 forms a good electromagnetic shielding environment with longer service life to resist radio frequency interference.

Finally, since the coaxial cable 200 and the coaxial cable connector 202 are still in a loose state, it is possible to further use a coaxial cable fixing jig (such as a crimping tool) to clamp the wire along the tube 210 With radial extrusion, the wire clamping tube 210 is squeezed to produce radial deformation to be clamped on the coaxial cable 200, so that the coaxial cable connector 202 and the coaxial cable 200 can be firmly joined without being released. It is worth mentioning that in practical applications, the wire clamping tube 210 can be preferably squeezed at a position corresponding to the second metal braid 206 to produce radial deformation, whereby the wire clamping tube 210 can be tightened. The second metal braided layer 206 and the protective layer 144 (as shown in FIG. 12) are clamped to thereby improve the torsion resistance and tensile strength between the coaxial cable 200 and the coaxial cable connector 202.

Through the electrical connection design in which the conductive inner ring directly contacts and abuts between the sleeve body and the metal braid, a good and stable common electrical polarity can be generated between the coaxial cable connector and the coaxial cable. The present invention can effectively solve the problem that the common electrode between the coaxial cable connector and the metal braid of the coaxial cable is affected due to the embrittlement of the plastic protective layer mentioned in the prior art, thereby improving the coaxial cable connector The performance of relevant data in the shielding protection, insertion loss and reflection loss of radio frequency signals, which greatly improves the signal transmission quality of coaxial cable connectors and produces anti-cord aging effects.

It is worth mentioning that the structural connection design between the metal sleeve and the coupling sleeve may not be limited to the above embodiment. Please refer to Figure 14 and Figure 15. Figure 14 is proposed according to another embodiment of the present invention. A schematic axial cross-sectional view of a coaxial cable connector 250. Figure 15 is a schematic cross-sectional view of the coaxial cable connector 250 of Figure 14 fixed to the coaxial cable 200. The components described in this embodiment are the same as those described in the above embodiments. Those with the same component numbers indicate that they have similar functions or structures, and will not be repeated here. As shown in Figures 14 and 15, the coaxial cable connector 250 is detachably sleeved on the coaxial cable 200. The coaxial cable connector 250 includes a metal sleeve 252, a signal processing circuit structure 254, and a wire clamping tube 210. , The coupling sleeve 118, and the conductive inner collar 122. The metal sleeve 252 has a sleeve body 256 for accommodating the conductive inner sleeve ring 122. The wire clamp tube 210 can preferably be formed integrally from a first end P _{5 of the} sleeve body 256. The sleeve body 256 extends toward the coupling sleeve 118 to form a metal shell 258 so that a second end P _{6 of} the sleeve body 256 is connected to the coupling sleeve 118 to facilitate the passage of the coaxial cable connector 250 The coupling sleeve 118 is coupled to an electronic device (such as a digital TV set top box or a cable modem) capable of receiving coaxial cable signals. The signal processing circuit structure 254 is disposed in the metal shell 258 and is electrically connected to the coaxial cable 200 and the electronic device, respectively, to establish a signal transmission path between the coaxial cable 200 and the electronic device. The signal processing circuit structure 254 is comparable Preferably, it is a circuit of filtering, amplifying, equalizing, distributing, attenuating, or a combination of the above for signal transmission and reception. In this embodiment, the signal processing circuit structure 254 can be formed on a conventional printed circuit board, but The formation of or its carrier is not within the scope of the present invention.

In addition, the structural design of the metal casing is not limited to the one-piece casing design used in the above-mentioned embodiment. For example, the present invention can be changed to a two-piece casing design. Please refer to Figure 16, which is based on An axial cross-sectional schematic diagram of a coaxial cable connector 300 according to another embodiment of the present invention. The components described in this embodiment and the components described in the above embodiments have the same numbers, indicating that they have similar functions or The structure will not be repeated here. As shown in Figure 16, the coaxial cable connector 300 is detachably sleeved on the coaxial cable 200 (not shown in the figure) and includes a metal sleeve 302, a coupling sleeve 304, and a signal processing circuit structure 254 , The wire clamp tube 210, and the conductive inner collar 122. The metal sleeve 302 can be used to accommodate the conductive inner collar 122, and the wire clamp tube 210 can preferably be formed by an integrally formed axial extension from a first end P _{7 of the} metal sleeve 302 (but not In this limitation, the two-piece clamping tube design mentioned in the above-mentioned embodiment can also be adopted, and the related description can be deduced by analogy, and will not be repeated here). In this embodiment, the coupling sleeve 304 includes a connector body 306 and a metal shell 308. The connector body 306 can be used to detachably connect to an electronic device that can receive coaxial cable signals (such as a digital TV top box or Cable modem), the metal shell 308 is respectively sleeved on the connector body 306 and the second end P ₈ of the metal sleeve 302 to form a two-piece detachable sleeve structure with the metal sleeve 302 for subsequent disassembly. For installation and maintenance.

In practical applications, in order to further improve the performance of the coaxial cable connector in terms of radio frequency signal shielding protection, insertion loss and reflection loss, the present invention can be used to establish a coaxial cable and coupling sleeve through a conductive inner ring The common electrode design, for example, please refer to Figure 17, Figure 18, and Figure 19. Figure 17 is an exploded schematic view of a coaxial cable connector 400 according to another embodiment of the present invention. Figure 18 is an exploded view of the coaxial cable connector 400 of Figure 17 A schematic axial cross-sectional view. Fig. 19 is a schematic cross-sectional view of the coaxial cable connector 400 of Fig. 18 fixed to the coaxial cable 200. The components described in this embodiment are the same as those described in the above embodiments. They have similar functions or structures, and will not be repeated here. As shown in Figures 17, 18, and 19, the coaxial cable connector 400 is detachably sleeved on the coaxial cable 200. The coaxial cable connector 400 includes a metal sleeve 402, a wire clamp tube 210, and a The coupling sleeve 404 and a conductive inner sleeve ring 406 are coupled. The metal sleeve 402 has a sleeve body 212. A sleeve ring accommodating space 214 is formed in the sleeve body 212 to accommodate the conductive inner sleeve ring 406 and axially limit the conductive inner sleeve ring 406 to prevent the conductive inner sleeve The ring 406 falls off.

Similarly, in this embodiment, the cut-off groove 134 can be preferably formed on the conductive inner ring 406 so that the conductive inner ring 406 has a C-shaped ring shape and can be radially deformed (but not limited to this) , And a plurality of tongues 408 can preferably be arranged radially and bend relatively inwardly (but not limited to this, it can also adopt the design of the tongues bent outward or the design mentioned in the above embodiment The strip design) is formed on the conductive inner ring 406, wherein the number of tongues on the conductive inner ring 406 may vary depending on the actual application requirements of the coaxial cable connector 400, and is not limited to Figure 17. In this way, the conductive inner sleeve ring 406 can have proper radial elasticity, so as to ensure that the conductive inner sleeve ring 406 can reliably contact the sleeve body 212 and the coaxial cable through the tongue 408 when the coaxial cable connector 400 is sleeved on the coaxial cable 200. The second metal braid 206 of the cable 200.

In addition, the system 406 may be a conductive collar extends toward the second end portion of the sleeve body 212 P ₄ is formed with at least one contact arm 410 (shown in FIG. 17 in four, but not limited thereto) in By contacting the coupling sleeve 404, the coaxial cable connector 400 establishes the common polarity of the coaxial cable 200 and the coupling sleeve 404 via the conductive inner collar 406. In more detail, in this embodiment, a first limiting flange 412 is formed to protrude radially outward from the second end P _{4 of the} sleeve body 212, and the coupling sleeve 404 includes a joint body 414 and a The inner limit tube 416, the joint body 414 has a pivotal end P ₉ , and an inner flange 418 is formed to protrude radially inwardly from the pivotal end P _{9. The} inner limit tube 416 has a limit tube section 420 and a connecting For the connecting pipe section 422, a groove 417 may be preferably formed on the inner limiting pipe 416 to be radially deformable to facilitate the operation of passing through the joint body 414 and the sleeve body 212 (but not limited thereto). The two limiting flanges 424 are formed to protrude radially outward from the limiting pipe section 420, and the connecting pipe section 422 extends from the limiting pipe section 420 to penetrate through the second end P ₄ to limit the inner flange 418 at the first limit. Between the positioning flange 412 and the second limiting flange 424 (as shown in Figure 19), the joint body 414 is connected to the second end P ₄ ; the contact arm 410 may have an extension arm 426 and a bending The arm portion 428 and the bent arm portion 428 are formed by bending from the extending arm portion 426 toward the inner flange 418. As can be seen from FIG. 19, when the conductive inner collar 406 is disposed in the collar accommodating space 214, it extends The arm 426 is sandwiched between the connecting pipe section 422 and the casing body 212, and the bending arm 428 can contact the inner flange 418.

In this way, through the above design, the second metal braid 206 of the coaxial cable 200 and the conductive inner ring 406 can be electrically connected continuously and stably by the tongue 412. Furthermore, by the conductive inner ring 406 The contact arm 410 is continuously and stably electrically connected to the inner flange 418 of the coupling sleeve 404, which indirectly causes the second metal braid 206 of the coaxial cable 200 and the coupling sleeve 404 to have a common electrical polarity, and thus the coaxial cable 200 provides a continuous and stable electromagnetic shielding environment.

The foregoing descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the present invention.

102: Coaxial cable

104: Coaxial cable connector

106: center conductor

108: insulating layer

110: Metal foil layer

111: outer side

112: Metal braid

113: inside

114: protective layer

116: Metal casing

118: coupling sleeve

120: Conductive outer ring

122: conductive inner ring

124: Wire clip tube

126: shunt arm tube

128: casing body

132, 136: curved strips

P ₁ : first end

P ₂ : The second end

Claims (8)

A coaxial cable connector, which is detachably sleeved on a coaxial cable, the coaxial cable has a metal coating layer, and the metal coating layer includes a protective layer, a first metal braid, and a second metal braid The protective layer covers the first metal braided layer, the second metal braided layer extends forward from the first metal braided layer and is folded back relative to the protective layer, so that the protective layer is sandwiched between the first Between a metal braided layer and the second metal braided layer, the coaxial cable connector includes: a metal sleeve having a sleeve body, and a ring accommodating space is formed in the sleeve body; and a wire clamp tube , Which is connected to a first end of the sleeve body, the wire clamping tube is squeezed to produce radial deformation to clamp the coaxial cable; a coupling sleeve, which is disposed on a second end of the sleeve body End; and a conductive inner sleeve ring disposed in the sleeve accommodating space, the conductive inner sleeve contacting the sleeve body and the second metal braid when the sleeve body is sleeved on the coaxial cable To establish an electrical connection between the metal sleeve, the second metal braided layer and the first metal braided layer. The coaxial cable connector according to claim 1, wherein the coupling sleeve is detachably connected to an electronic device, and the sleeve body extends toward the coupling sleeve to form a metal shell to make the second end portion Connected to the coupling sleeve, the coaxial cable connector further includes: a signal processing circuit structure disposed in the metal shell and electrically connected to the coaxial cable and the electronic device, respectively, for establishing the coaxial cable and the electronic device Signal transmission path between electronic devices. The coaxial cable connector according to claim 1, wherein the position of the wire clamping tube corresponding to the second metal braid is squeezed to produce radial deformation, so that the wire clamping tube tightly clamps the second metal braid Layer and the protective layer. The coaxial cable connector according to claim 1, wherein the coupling sleeve includes a connector body and a metal shell, the connector body is detachably connected to an electronic device, and the metal shell is respectively sleeved on the sleeve The second end of the tube body and the joint body, the coaxial cable connector further includes: a signal processing circuit structure, which is arranged in the metal shell and electrically connected to the coaxial cable and the electronic device to establish The signal transmission path between the coaxial cable and the electronic device. The coaxial cable connector according to claim 1, wherein the conductive inner collar extends toward the second end to form at least one contact arm to contact the coupling sleeve. The coaxial cable connector according to claim 5, wherein a first limiting flange is formed to protrude radially outward from the second end of the sleeve body, and the coupling sleeve includes a joint body and an inner A limit tube, the joint body has a pivot end, an inner flange is formed to protrude radially inward from the pivot end, the inner limit tube has a limit tube section and a connecting tube section, a second limit A positioning flange is formed to protrude radially outward from the limiting tube section, and the connecting tube section extends from the limiting tube section through the second end to limit the inner flange to the first limiting flange And the second limiting flange, so that the joint body is connected to the second end, the at least one contact arm has an extension arm portion and a bending arm portion, the bending arm portion extends from the extension arm portion It is formed by bending toward the inner flange. When the conductive inner collar is disposed in the collar accommodating space, the extension arm is sandwiched between the connecting pipe section and the casing body, and the bent arm Touch the inner flange. A coaxial cable connector is detachably sleeved on a coaxial cable. The coaxial cable has a metal coating layer. The metal coating layer includes a metal foil layer and a metal braid layer. The coaxial cable connector includes: A metal sleeve, which has a sleeve body and a shunt arm tube, the shunt arm tube axially extends from a first end of the sleeve body, and the shunt arm tube is sleeved on the coaxial cable connector The coaxial cable penetrates between the metal foil layer and the metal braid layer so that the sleeve body is sleeved on the metal foil layer and the metal braid layer is sleeved on the shunt arm tube, forming the sleeve body There is a set of ring accommodating space; a wire clamp tube connected to the first end of the sleeve body, the wire clamp tube is squeezed to produce radial deformation to tightly clamp the coaxial cable; a coupling sleeve, It is arranged at a second end of the sleeve body; and a conductive inner sleeve ring is arranged in the sleeve accommodating space, and the conductive inner sleeve ring is when the sleeve body is sleeved on the metal foil layer The sleeve body and the metal foil layer are contacted to establish an electrical connection between the metal sleeve and the metal foil layer. The coaxial cable connector according to claim 7, further comprising: a conductive outer ring sleeved on the shunt arm tube, and the conductive outer ring penetrates the metal foil layer and the metal braid layer at the shunt arm tube The shunt arm tube and the metal braid are contacted to establish an electrical connection between the metal sleeve and the metal braid.

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