Cable Connectors

Abstract

The present invention discloses a cable connector, including a cable installation component and a plug component, which can realize convenient and error-proof installation. The cable installation component includes an outer shell and an extrusion component movably installed in the outer shell, a connecting portion extends from the plug component, and the outer shell is screwed to the connecting portion. During the screwing process, the connecting portion squeezes the extrusion component, thereby driving the extrusion component to squeeze the cable in the cable installation component; the extrusion component can eliminate the external extrusion resistance on the cable during the connection process between the outer shell and the connecting portion, and avoid damage to the cable braiding layer; an unlocking sleeve is provided on the outer shell of the unlocking component, and the unlocking sleeve increases the unlocking force surface, which is convenient for hand-holding and quick unlocking.

Description

Technical Field

[0001] The invention relates to a cable connector, in particular to a cable connector which is convenient for on-site installation. Background Art

[0002] The existing patent application number CN200680044098.4 discloses a push-pull coaxial plug connector, which includes a plug head, on which a rotatable and axially movable sliding sleeve is arranged, and the sliding sleeve is sleeved on a radially elastic elastic collet, so that the sliding sleeve radially compresses the elastic collet in the connected state. Compared with the known plug connectors of the same type, the high-frequency plug connector is significantly simplified in structure.

[0003] Another patent application with number CN201110209963.9 discloses a coaxial connector, comprising a main body extending along a first longitudinal axis and defining a ground contact portion, the main body including a portion for contacting a complementary connector during a connection operation and defining a connection interface; a central contact portion, located in a cavity formed in the main body; an insulator between the central contact portion and the ground contact portion; and a plug-in mounted on the main body; the plug-in is arranged around all or part of the connection interface of the main body and is arranged on all or part of the periphery of at least the main body along the entire length of the longitudinal axis. Compared with existing connectors, the connector is more durable and has a simple structure.

[0004] However, the above-disclosed connector solution still has many defects: 1. There are many loose parts, which may lead to omission or loss during the on-site installation process. 2. Only the cable shielding layer is squeezed, which may cause the cable shielding layer to break after the cable swings multiple times. 3. The installation parts are easy to slide along the cable, which is not easy to install. 4. The unlocking parts are small in size and not easy to unlock manually. Therefore, it is necessary to further improve the structure of the existing connector. Summary of the invention

[0005] The object of the present invention is to overcome the defects of the prior art and provide a cable connector which has high integration, is not easy to damage or break the cable during installation, and is easy to install and unlock.

[0006] To achieve the above-mentioned purpose, the present invention proposes the following technical solution: it includes a plug assembly and a cable installation assembly, a connecting portion extending from the plug assembly for connecting the cable installation assembly, the cable installation assembly includes an outer shell and an extrusion assembly movably installed in the outer shell, the outer shell is screwed to the connecting portion, and the connecting portion squeezes the extrusion assembly during the process of screwing the outer shell and the connecting portion, thereby driving the extrusion assembly to squeeze the cable in the cable installation assembly; the extrusion assembly can eliminate the external extrusion resistance on the cable during the process of screwing the outer shell and the connecting portion.

[0007] Preferably, the plug assembly comprises a plug body and a unlocking assembly mounted on the plug body, and the connecting portion extends from the plug body.

[0008] Preferably, an unlocking sleeve connected to the unlocking assembly is disposed outside the unlocking assembly, and the unlocking sleeve drives the unlocking assembly to lock or unlock the connection between the plug body and other structures under the action of external force.

[0009] Preferably, the extrusion assembly includes a first extrusion component, a third extrusion component and a second extrusion component located therebetween, the outer shell has a relative cable mounting end and a plug mounting end, and the first, second and third extrusion components are distributed in sequence in the outer shell from the cable mounting end to the plug mounting end.

[0010] Preferably, one end of the first extrusion member is limited on the inner wall of the outer shell near the cable installation end, and the other end is interference fit with the second extrusion member when the extrusion assembly is in the extrusion state; one end of the third extrusion member is interference fit with the second extrusion member when the extrusion assembly is in the extrusion state, and the other end is abutted against the connecting part when the connecting part is screwed into the outer shell.

[0011] Preferably, a limiting portion is provided on the inner wall of the outer shell, and the end of the first extrusion piece opposite to the end that cooperates with the second extrusion piece abuts against the limiting portion.

[0012] Preferably, the longitudinal section of the limiting portion is L-shaped.

[0013] Preferably, the third extrusion member is mounted in the outer shell by means of mutually complementary convex and concave groove structures.

[0014] Preferably, a plug mounting portion for mounting the connecting portion is formed in the outer shell.

[0015] Preferably, the first extrusion piece and the second extrusion piece, and the third extrusion piece and the second extrusion piece are interference-fitted via matching inclined surfaces.

[0016] Preferably, a first inclined surface is formed on one end surface of the second extrusion piece, and a second inclined surface is formed on the other end surface, a third inclined surface is formed on the inner wall surface of the first extrusion piece close to the second extrusion piece, and a fourth inclined surface is formed on the inner wall surface of the third extrusion piece close to the second extrusion piece, the first inclined surface of the second extrusion piece is interference fit with the third inclined surface of the first extrusion piece, and the second inclined surface of the second extrusion piece is interference fit with the fourth inclined surface of the third extrusion piece.

[0017] Preferably, the second extrusion member is provided with a gap for providing an extrusion space.

[0018] Preferably, the second extrusion member is a C-ring.

[0019] Preferably, an anti-slip member is provided in the outer shell, and the anti-slip member is located between the inner wall of the outer shell and the cable.

[0020] Preferably, the anti-slip component is arranged on the inner wall of the outer shell close to the cable installation end and is located on one side of the first extrusion component.

[0021] Preferably, the anti-slip member is an O-ring.

[0022] Preferably, the cable includes an inner conductor, an insulator, a braided layer and an outer sheath which are distributed in sequence from the inside to the outside, the inner conductor and the insulator are inserted into the connecting part, the braided layer is in contact with and electrically connected to the outer surface of the connecting part, and the outer sheath is in contact with the inner surface of the extrusion component and deforms and shrinks toward the inner conductor under its extrusion.

[0023] Preferably, the braided layer is a metal braided layer.

[0024] Preferably, the axial length and radial width of the unlocking sleeve are both greater than the axial length and radial width of the unlocking assembly.

[0025] Preferably, the unlocking assembly includes a sliding member and a locking member, the sliding member is slidably mounted on the plug body, the locking member is installed in the plug body, and the locking member is locked or unlocked by the connection with other structures when the sliding member slides to a corresponding position of the plug body, and the unlocking sleeve is arranged outside the sliding member, and its axial length is greater than the length of the sliding member.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The integrated parts are components with high integration to avoid missing or loss of parts.

[0028] 2. Squeeze the cable braid and cable sheath at the same time, doubly protect the cable braid from breaking and enhance the holding force.

[0029] 3. Increase the friction between the installation parts and cables to prevent the installation parts from sliding randomly.

[0030] 4. Add auxiliary parts to increase the unlocking force surface to facilitate handheld unlocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 , Figure 4 and Figure 7 It is a schematic diagram of the three-dimensional structure of the present invention in different assembly states;

[0032] Figure 2 yes Figure 1 A schematic cross-sectional structure diagram in the CC direction;

[0033] Figure 3 yes Figure 2 A schematic diagram of the structure enlargement of part a;

[0034] Figure 5 yes Figure 4 A schematic cross-sectional structure diagram in the CC direction;

[0035] Figure 6 yes Figure 5 A schematic diagram of the structure of part b is enlarged;

[0036] Figure 8 yes Figure 7 A schematic cross-sectional structure diagram in the CC direction;

[0037] Fig. 9 yes Figure 8 The enlarged schematic diagram of the structure of part c;

[0038] Fig.10 It is a three-dimensional structural schematic diagram of the cable installation assembly of the present invention;

[0039] Fig.11 It is a schematic diagram of the planar structure of the cable installation assembly of the present invention;

[0040] Fig.12 yes Fig.11 Schematic diagram of the cross-sectional structure in the AA direction;

[0041] Reference numerals:

[0042] 1. Cable installation assembly, 11. Outer shell, 111. Grid structure, 112. Grip, 113. Cable installation end, 114. Plug installation end, 115. Limiting portion, 116. Plug installation portion, 117. Anti-slip member, 12. Extrusion assembly, 121. First extrusion member, 1211. Third inclined surface, 122. Second extrusion member, 1221. First inclined surface, 1222. Second inclined surface, 1223. Middle end surface, 1224, gap, 123, third extrusion part, 1231, fourth inclined surface, 2, plug assembly, 211, first plug body, 212, second plug body, 213, connecting part, 214, second step surface, 22, unlocking assembly, 221, sliding part, 222, locking part, 3, cable, 31, inner conductor, 32, insulator, 33, braided layer, 331, first step surface, 34, outer jacket, 4, unlocking sleeve. DETAILED DESCRIPTION

[0043] The technical solutions of the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention.

[0044] Combination Figures 1 to 9As shown, a cable connector disclosed in the present invention includes a cable installation component 1 and a plug component 2 detachably installed with the cable installation component 1, and the two can realize error-proof and convenient installation. The cable installation component 1 is used to install a cable 3, and the plug component 2 is used to connect with other structures, and the connection state can be locked or unlocked under the action of external force.

[0045] Combination Fig.10 As shown, the cable installation assembly 1 includes an outer shell 11 and an extrusion assembly 12 assembled in the outer shell 11. In this embodiment, the outer shell 11 is a hollow cylindrical structure as a whole, and a grid structure 111 for increasing contact friction and a gripping portion 112 for easy handholding are provided on its outer surface. The two ends of the outer shell 11 are respectively a cable installation end 113 and a plug installation end 114. The cable 3 is inserted into the outer shell 11 from the cable installation end 113 of the outer shell, and extends from the plug installation end 114 to be connected to the plug installation assembly 2.

[0046] The extrusion assembly 12 is used to extrude and fix the cable in the outer shell 11, and includes a first extrusion piece 121, a second extrusion piece 122 and a third extrusion piece 123. During the installation of the cable 3, the three extrusion pieces perform multiple extrusions on the cable 3 to ensure that the cable 3 has a greater holding force and is not easy to slip.

[0047] In this embodiment, the first extrusion member 121, the second extrusion member 122 and the third extrusion member 123 are sequentially distributed in the outer shell 11 from the cable installation end 113 to the plug installation end 114. Among them, one end of the first extrusion member 121 is limited on the inner wall of the outer shell 11 near the cable installation end 113, and the other end is matched with the second extrusion member 122. Specifically, a limiting portion 115 is provided on the inner wall of the outer shell 11 near the cable installation end 113, and the first extrusion member 121 abuts against the limiting portion 115. In this embodiment, the limiting portion 115 on the inner wall of the outer shell 11 and the end of the first extrusion member 121 are matched through a complementary stepped surface structure, such as the longitudinal section of the limiting portion 115 is a positive L-shaped, and the longitudinal section of the end of the first extrusion member 121 is an inverted L-shaped, of course, it can also be reversed, and is not limited to the complementary stepped surface structure, and other structures that can achieve the abutment of the two are also applicable to the present invention. The first extrusion member 121 is a circular ring with the same outer diameter as a whole.

[0048] The second extrusion piece 122 is located between the first extrusion piece 121 and the second extrusion piece 122. In this embodiment, the second extrusion piece 122 and the first extrusion piece 121, and the second extrusion piece 122 and the third extrusion piece 123 are interference-fitted through matching inclined surfaces. Figure 10 to Figure 12As shown, a first inclined surface 1221 is formed on the outer surface of one end of the second extrusion member 122, and a third inclined surface 1211 matching the first inclined surface 1221 is formed on the inner surface of the first extrusion member 121. The third inclined surface 1211 is formed on the inner surface of one end of the first extrusion member 121, and the end is the end opposite to the end of the first extrusion member 121 limited to the outer shell 11. The first inclined surface 1221 of the second extrusion member 122 is interference-fitted with the third inclined surface 1211 of the first extrusion member 121, so as to realize the second extrusion member 122 and the first extrusion member 121. Assembly of the pressing piece 121; a second inclined surface 1222 is formed on the outer surface of the other end of the second extruded piece 122, and a fourth inclined surface 1231 matching the second inclined surface 1222 is formed on the inner end surface of the third extruded piece 123, and the fourth inclined surface 1231 is formed on the inner wall surface of one end of the third extruded piece 123 close to the cable mounting end 113 of the outer shell, and the second inclined surface 1221 of the second extruded piece 122 and the fourth inclined surface 1231 of the third extruded piece 123 are interference fit, thereby realizing the assembly of the second extruded piece 122 and the third extruded piece 123.

[0049] The inclined surface design between the three extrusion parts realizes the matching assembly of the three parts on one hand, and on the other hand, when the extrusion parts on both sides are subjected to the vertical extrusion force, the middle second extrusion part 122 can apply the oblique extrusion force to the cable 3, and when the extrusion parts on both sides apply the double extrusion force to it, the cable 3 is better fixed and not easy to slide. Of course, the three extrusion parts can be matched with each other not limited to the inclined surface structure, and other matching structures that can realize the extrusion of the cable 3 are also applicable to the present invention.

[0050] In addition, a middle end surface 1223 located between the first inclined surface 1221 and the second inclined surface 1222 is formed on the outer surface of the second extrusion member 122. The first inclined surface 1221, the second inclined surface 1222 and the middle end surface 1223 are integrally formed into an outwardly convex arc surface.

[0051] Preferably, a gap 1224 for providing an extrusion space is provided on the second extrusion piece 122. In this embodiment, the second extrusion piece 122 is in the shape of a C-shaped ring as a whole but is not limited to it.

[0052] The third extrusion member 123 is installed in the outer shell 11. In this embodiment, the third extrusion member 123 is installed in the outer shell 11 through a structure such as a slot. Of course, the installation structure of the third extrusion member 123 installed in the outer shell 11 is not limited to the slot structure here, and other structures that can realize the installation of the third extrusion member 123 in the outer shell 11 are also applicable to the present invention.

[0053] Preferably, in the embodiment of the present invention, the first extrusion member 121 and the third extrusion member 123 are both made of hard materials, such as metal, and the second extrusion member 122 is made of soft materials, such as plastic. In this way, the first extrusion member 121 and the third extrusion member 123 are not easily deformed when subjected to an extrusion force, and the second extrusion member 122 can be squeezed and contracted under the extrusion of the first extrusion member 121 and the third extrusion member 123.

[0054] The cable 3 is installed in the cable installation assembly 2, specifically, in combination with Figure 2 , Figure 5 and Figure 8 As shown, in this embodiment, the cable 3 includes an inner conductor 31, an insulator 32, a braided layer 33 and an outer sheath 34 which are sequentially arranged from the inside to the outside. In implementation, the braided layer is preferably a metal braided layer.

[0055] Preferably, in order to increase the friction between the outer shell 11 and the cable 3, prevent the extrusion assembly 12 from sliding along the cable 3 at will, and facilitate the positioning of the extrusion assembly 12, the present invention is provided with an anti-slip member 117 in the outer shell 11, and the anti-slip member 117 is located between the inner wall of the outer shell 11 and the cable 3. In this embodiment, the anti-slip member 117 is provided on the inner wall of the outer shell 11 close to the cable installation end 113, and is located on one side of the first extrusion member 121. Preferably, the anti-slip member 117 can be an O-ring.

[0056] The plug assembly 2 includes a plug body and an unlocking assembly 22. The unlocking assembly 22 is installed on the plug body and is used to lock or unlock the connection between the plug body and other structures. In this embodiment, the plug body includes a first plug body 211 and a second plug body 212 that are plugged and assembled. A connecting portion 213 for connecting the outer shell 11 extends from the first plug body 211. In this embodiment, the connecting portion 213 is vertically extended downward from the lower end surface of the first plug body 211. The connecting portion 213 is plugged with the cable 3 and is screwed with the outer shell 11 of the cable installation assembly 1. Specifically, the upper end of the braided layer 33 forms a first stepped surface 331, and the lower end of the connecting portion 213 forms a second stepped surface 214 complementary to the first stepped surface 331. The connecting portion 213 is plugged with the cable 3 through the matching first and second stepped surfaces 331 and 214. Here, the braided layer 33 not only plays a fixing role with the connecting portion 213, but also acts as an outer conductor of the cable 3. After plugging in, the outer shell 11 is screwed onto the connecting portion 213. Specifically, a plug mounting portion 116 for mounting the connecting portion 213 is formed inside the outer shell 11 near its plug mounting end 114. In the present embodiment, the plug mounting portion 116 is screwed onto the connecting portion 213 via a threaded structure. Specifically, an internal thread (not shown) is provided inside the plug mounting portion 116, and a matching external thread (not shown) is provided on the outer surface of the connecting portion 213. The two are screwed together via the matching internal and external thread structures. Of course, other structures that can realize the mutual screw connection between the two are also applicable to the present invention.

[0057] After the connection part 213 is installed in the outer shell 11, the braided layer 33 of the cable abuts against the third extrusion piece 123, and part of the inner surface of the third extrusion piece 123 contacts the cable braided layer 33, and another part of the inner surface contacts the cable outer sheath 34. In the process of screwing the outer shell 11 and the connection part 213, the connection part 213 applies a downward extrusion force to the extrusion assembly 12, thereby driving the third extrusion piece 123 and the second extrusion piece 122 to perform multiple extrusions on the cable 3 in the cable installation assembly 1.

[0058] The unlocking assembly 22 is installed on the second plug body 212, and includes a sliding member 221 and a locking member 222. The sliding member 221 is slidably installed on the second plug body 212, and the locking member 222 is installed in the second plug body 212. After the sliding member 221 slides toward the first plug body 211 and slides to the corresponding position, the connection state of the locking member 222 and other structures is an unlocking state; after the sliding member 221 slides toward the direction away from the first plug body 211 and slides to the corresponding position, the connection state of the locking member 222 and other structures is a locking state. It should be noted that the structure of the existing unlocking assembly is also applicable to the present invention, and is not limited to the structure described here.

[0059] An unlocking sleeve 4 is disposed on the outer surface of the unlocking assembly 22, and the unlocking sleeve 4 is connected to the sliding member 221. Under the action of external force, the unlocking assembly 22 is driven to lock or unlock the connection with other structures. Preferably, the axial length and radial width of the unlocking sleeve 4 are respectively greater than the length and width of the sliding member 221. Since the unlocking force-bearing surface of the unlocking sleeve 4 is greater than the unlocking force-bearing surface of the existing unlocking assembly, the addition of the unlocking sleeve 4 facilitates hand-holding and quick unlocking.

[0060] During installation, the cable 3 is inserted into the cable installation assembly 1 and then pushed into the plug assembly 2. The inner conductor 31 and the insulator 32 of the cable are inserted into the connection part 213, and the inner conductor 31 is connected to the inner conductor in the plug assembly 2. The braided layer 33 is inserted into the connection part 213 and contacts the outer surface of the connection part 213 to make an electrical connection. Then the outer shell 11 is screwed onto the connection part 213. During the screwing process, the connection part 213 squeezes the third extrusion piece 123, and the third extrusion piece 123 squeezes the braided layer 33 and the outer sheath 34 of the cable. The second extrusion piece 122 wraps and squeezes the outer sheath 34 of the cable under the squeezing of the first plug body 21121 and the third extrusion piece 123 on both sides. The outer sheath 34 is deformed and contracted toward the inner conductor 31 of the cable under the squeezing. Thus, multiple squeezing of the cable 3 is achieved, ensuring that the cable 3 has a large holding force and is not easy to slip during installation. In addition, during the rotation of the outer shell 11, since the first extrusion member 121, the second extrusion member 122 and the third extrusion member 123 are separated from each other, the three extrusion members can rotate in the direction opposite to the rotation direction of the outer shell 11, thereby eliminating the external extrusion resistance on the cable 3. Therefore, the cable 3 will not rotate with the extrusion assembly due to the external extrusion resistance, thereby preventing the cable braided layer 33 from rotating at the same time and extruding the cable outer sheath 34.

[0061] During manual unlocking, external force contacts the unlocking sleeve 4, pushing the unlocking assembly 22 to slide toward the first plug body 211. Since the contact surface of the unlocking sleeve 4 is enlarged, it is easy to unlock quickly.

[0062] The technical contents and technical features of the present invention have been disclosed as above. However, those skilled in the art may still make various substitutions and modifications based on the teachings and disclosures of the present invention without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should not be limited to the contents disclosed in the embodiments, but should include various substitutions and modifications that do not depart from the present invention and are covered by the claims of this patent application.

Claims

1. A cable connector, characterized in that: The invention comprises a plug assembly and a cable installation assembly, wherein a connecting portion for connecting the cable installation assembly extends from the plug assembly, wherein the cable installation assembly comprises an outer shell and an extrusion assembly movably installed in the outer shell, wherein the extrusion assembly comprises a first extrusion member, a second extrusion member and a third extrusion member which are separated from each other; the outer shell is screwed to the connecting portion, and the connecting portion extrudes the extrusion member during the process of screwing the outer shell to the connecting portion, thereby driving the extrusion member to perform multiple extrusions on the cables in the cable installation assembly; The extrusion assembly can eliminate the external extrusion resistance on the cable by rotating in the opposite direction to the outer shell during the screw connection between the outer shell and the connecting part.

2. The cable connector according to claim 1, characterized in that: The plug assembly comprises a plug body and a unlocking assembly mounted on the plug body, and the connecting portion extends from the plug body.

3. The cable connector according to claim 2, characterized in that: An unlocking sleeve connected to the unlocking assembly is disposed outside the unlocking assembly, and the unlocking sleeve drives the unlocking assembly to lock or unlock the connection between the plug body and other structures under the action of external force.

4. The cable connector according to any one of claims 1 to 3, characterized in that: The second extruded component is located between the first extruded component and the third extruded component. The outer shell has a relative cable installation end and a plug installation end. The first, second and third extruded components are distributed in sequence from the cable installation end to the plug installation end in the outer shell.

5. The cable connector according to claim 4, characterized in that: One end of the first extrusion member is limited on the inner wall of the outer shell near the cable installation end, and the other end is interference fit with the second extrusion member when the extrusion assembly is in the extrusion state. One end of the third extrusion member is interference fit with the second extrusion member when the extrusion assembly is in the extrusion state, and the other end is abutted against the connecting part when the connecting part is screwed into the outer shell.

6. The cable connector according to claim 5, characterized in that: The first extrusion piece and the second extrusion piece, and the third extrusion piece and the second extrusion piece are interference-fitted via matching inclined surfaces.

7. The cable connector according to claim 3, characterized in that: The first extrusion piece and the third extrusion piece are made of hard material, and the second extrusion piece is made of soft material.

8. The cable connector according to claim 4, characterized in that: The second extrusion piece is provided with a gap for providing an extrusion space.

9. The cable connector according to claim 1, characterized in that: The outer shell is provided with an anti-slip part, and the anti-slip part is located between the inner wall of the outer shell and the cable.

10. The cable connector according to claim 1, characterized in that: The cable comprises an inner conductor, an insulator, a braided layer and an outer sheath which are sequentially distributed from the inside to the outside. The inner conductor and the insulator are inserted into the connecting part, and the braided layer contacts the connecting part to form an electrical connection.

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