A coaxial cable

Abstract

The present invention relates to the field of cable technology, specifically a coaxial cable, including a connector for connecting two center conductors and fixing the center conductors and a protective sleeve on the center conductors at the same time, the connector including an inner core and an outer shell, and two fixing bodies are arranged on the inner core and the outer shell, and the two fixing bodies on the inner core are used to fix the center conductors. The connector preliminarily fixes the center conductors first, then uniformly further fixes the center conductors, and fixes the protective sleeves so that the cables are quickly and stably connected together, which is not only convenient for connection and disassembly, but also effectively improves the overall strength of the cable on the basis of the above, and at the same time, combined with the control of the initial fixing force of the center conductor, ensures the smoothness and reliability of the cable connection process, and thus can quickly and reliably complete the cable connection.

Description

Technical Field

[0001] The invention relates to the technical field of cables, in particular to a coaxial cable. Background Art

[0002] The coaxial cable includes a center conductor and a protective sheath wrapped around the center conductor. The protective sheath usually includes one or more shielding layers and an insulating layer.

[0003] At present, the strength of the cable connection is relatively weak compared to other parts, especially in the environment where quick connection is required on site. In this environment, if the cable is simply and quickly connected, it is difficult to ensure the strength of the cable and the reliability of the work. If the strength of the cable connection needs to be guaranteed, the cable needs to be connected in a more complicated way, but it is difficult to achieve the effect of quick connection and disassembly. Summary of the invention

[0004] The present invention provides a coaxial cable to solve the problem in the related art that the cable strength and working reliability are difficult to ensure in an environment where a quick connection is required on site, thereby affecting the use of the cable.

[0005] The present invention provides a coaxial cable, which comprises two central conductors connected to each other; a connector for connecting the two central conductors and fixing the central conductors and protective sleeves on the central conductors at the same time, wherein the connector comprises an inner core and an outer shell, wherein the inner core and the outer shell are both provided with two fixing bodies, and the two fixing bodies on the inner core are used to fix the central conductors, and in an initial state, the two fixing bodies fixing the central conductors are in an initial fixing state, and the initial fixing force of one of the fixing bodies on the inner core is greater than the initial fixing force of the other fixing body, and during the connection process, one of the central conductors first enters the state with greater initial fixing force The fixing area of ​​the fixed body is in a preliminary fixed state; the fixed body includes a clamping head, a limit head and an automatic control part, the clamping heads are distributed circumferentially and are provided with an inclined contact surface, the limit head and the automatic control part are both axially slidably arranged on the outer sleeve, the limit head and the inclined contact surface cooperate to control the clamping head to synchronously shrink inward and clamp, wherein the limit head in the fixed body that fixes the central conductor is in an elastic limit state in the initial state, so that the corresponding clamping head is in an initial fixed state, and the fixed body with a larger clamping and fixing force also includes an initial control part, which is axially slidably connected to the outer sleeve and is used to control the sliding of the corresponding limit head.

[0006] In one possible implementation, the outer sleeve includes a fixed part and a sliding part, a threaded locking sleeve is provided between the sliding part and the fixed part, the threaded locking sleeve is threadedly connected to the fixed part and rotationally connected to the sliding part, the sliding part is axially slidably connected to the fixed part, the two fixed bodies on the outer sleeve are respectively arranged on the fixed part and the sliding part, and the automatic control parts in the two fixed bodies correspond to each other, and during the process of the threaded locking sleeve rotating to feed the sliding part toward the fixed part, the automatic control parts abut against each other and control the axial sliding of the corresponding limit head, the inner core is fixedly connected to the fixed part, and the initial control part is axially slidably connected to the fixed part.

[0007] In a possible implementation, the inner core includes a connecting base body symmetrically provided with trumpet-shaped guide areas, the connecting base body is fixedly connected to the fixing part, and the guide areas guide the central conductor respectively so that the central conductor smoothly enters the fixing area of ​​the corresponding fixing body.

[0008] In a possible implementation, a limiting matrix is ​​disposed between the symmetrical guide areas, and the limiting matrix limits the ends of the central conductors respectively and connects the central conductors together.

[0009] In a possible implementation, the fixing body with a relatively small initial fixing force further includes a reset member, which is fixedly connected to the sliding portion and resets the corresponding automatic control member to an initial state by limiting the position of the corresponding automatic control member.

[0010] In a possible implementation, an annular dustproof piece is provided on both the fixed part and the sliding part. The annular dustproof piece slides axially along the central conductor and is elastically connected to the corresponding fixed part and the sliding part.

[0011] In a possible implementation, the limiting head includes a movable ring provided with a plurality of limiting protrusions, the limiting protrusions correspond to the clamping heads one by one, and the movable ring is slidably arranged along the axial direction of the central conductor.

[0012] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: 1. According to a coaxial cable provided in an embodiment of the present invention, the connector preliminarily fixes the center conductor, and then further fixes the center conductor uniformly, and fixes the protective cover body so that the cables can be quickly and firmly connected together. It is not only convenient to connect and disassemble, but also effectively improves the overall strength of the cable on the basis of the above. At the same time, combined with the control of the preliminary fixing force of the center conductor, the smoothness and reliability of the cable connection process are ensured, and the cable connection can be completed quickly and reliably.

[0013] 2. According to a coaxial cable provided by an embodiment of the present invention, among the two fixing bodies for fixing the central conductor, the initial fixing force of one of the fixing bodies is greater than the initial fixing force of the other fixing body. During the connection process, the fixing body with the larger initial fixing force first fixes the central conductor, and with the assistance of the initial control component, the central conductor smoothly enters the fixing area of ​​the fixing body with the larger initial fixing force and is stably and reliably in the initial fixing state, thereby avoiding the situation where the central conductor is separated from the fixing area during the connection of another central conductor and the subsequent connection process, thereby effectively improving the convenience and reliability of the cable connection.

[0014] 3. According to a coaxial cable provided by an embodiment of the present invention, during the disassembly process, the movable ring in the fixed body with smaller fixing force is automatically reset by a reset member, which is convenient for the smooth removal of the center conductor on the one hand, and convenient for the subsequent smooth fixed connection of the center conductor on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a connection point of a coaxial cable provided by an embodiment of the present invention.

[0016] Figure 2 It is a schematic diagram of a partial cross-sectional structure of a coaxial cable provided by an embodiment of the present invention.

[0017] Figure 3 It is a structural schematic diagram of an initial control component and a connecting ring of a coaxial cable provided in an embodiment of the present invention.

[0018] Figure 4 It is a structural schematic diagram of an inner core body of a coaxial cable and a clamping head and a limiting head on the inner core body provided by an embodiment of the present invention.

[0019] Figure 5 It is a structural schematic diagram of a central conductor and a limiting protrusion of a coaxial cable provided in an embodiment of the present invention.

[0020] Figure 6 It is a schematic structural diagram of an automatic control component on an inner core of a coaxial cable provided by an embodiment of the present invention.

[0021] In the figure: 1. center conductor; 2. protective sleeve; 3. connector; 31. inner core; 311. guide area; 312. connecting base; 313. limiting base; 32. outer sleeve; 321. fixed part; 322. sliding part; 323. threaded locking sleeve; 324. annular dustproof part; 33. fixed body; 331. clamping head; 332. limiting head; 3321. limiting protrusion; 3322. moving ring; 333. automatic control part; 3331. push rod; 3332. connecting ring; 3333. limiting block; 3334. elastic part; 334. initial control part; 3341. support rod; 3342. pressing ring; 3343. contact block; 335. reset part. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0023] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 A coaxial cable comprises two center conductors 1 connected to each other and a connector 3 for connecting the two center conductors 1 and fixing the center conductors 1 and the protective sleeve 2 on the center conductors 1 at the same time. The connector 3 comprises an inner core 31 and an outer shell 32. Two fixing bodies 33 are arranged on the inner core 31 and the outer shell 32. The two fixing bodies 33 on the outer shell 32 are used to fix the protective sleeve 2 on the center conductor 1. The two fixing bodies 33 on the inner core 31 are used to fix the center conductor 1. The fixing bodies 33 for fixing the center conductor 1 are in an initial fixed state in an initial state. In this state, the center conductor 1 can smoothly enter the fixing area of ​​the corresponding fixing body 33 and maintain a preliminary fixed state. At this time, the protective sleeve 2 is in the fixing area of ​​the corresponding fixing body 33. Therefore, in the connection process, it is only necessary to insert the center conductor 1 into the fixing area of ​​the corresponding fixing body 33 respectively, and then uniformly make the four fixing bodies 33 fix the corresponding protective sleeve 2 and the center conductor 1 respectively, so that the cable connection can be quickly completed, and the connected cable has a higher strength.

[0024] See also Figure 1 , Figure 2 , Figure 3 and Figure 5The fixed body 33 includes a clamping head 331, a limiting head 332 and an automatic control part 333. The clamping heads 331 are evenly distributed along the circumference of the center conductor 1 and an inclined contact surface is provided on the clamping head 331. The limiting head 332 and the automatic control part 333 are both slidably arranged along the axial direction of the center conductor 1. The limiting head 332 cooperates with the inclined contact surface to control the clamping head 331 to shrink and clamp inward synchronously. The limiting head 332 includes a moving ring 3322 provided with a plurality of limiting protrusions 3321. The positioning protrusions 3321 correspond one-to-one with the clamping heads 331 and rest against the inclined contact surfaces of the corresponding clamping heads 331. The movable ring 3322 is arranged to slide axially along the center conductor 1. In the process of fixing the center conductor 1 and the protective cover body 2, the automatic control component 333 controls the corresponding movable ring 3322 to slide axially along the center conductor 1. The corresponding limiting protrusions 3321 can control the clamping heads 331 to move inward to clamp and fix the corresponding center conductor 1 and the protective cover body 2 by cooperating with the corresponding inclined contact surfaces.

[0025] See also Figure 1 , Figure 2 and Figure 3 The outer sleeve 32 includes a fixed portion 321 and a sliding portion 322. A threaded locking sleeve 323 is provided between the sliding portion 322 and the fixed portion 321. The threaded locking sleeve 323 is threadedly connected to the fixed portion 321 and is rotatably connected to the sliding portion 322. The fixed portion 321 is slidably connected to the sliding portion 322. The threaded locking sleeve 323 is rotated to control the sliding portion 322 to slide axially along the fixed portion 321. When the threaded locking sleeve 323 stops rotating, the sliding portion 322 is immediately fixedly connected to the fixed portion 321. The fixed bodies 33 are connected to the fixed part 321 and the sliding part 322 respectively, and the clamping head 331 in the fixed body 33 on the fixed part 321 is elastically connected to the fixed part 321, and the moving ring 3322 is axially slidably connected to the fixed part 321. Similarly, the clamping head 331 in the fixed body 33 on the sliding part 322 is elastically connected to the sliding part 322, and the moving ring 3322 is axially slidably connected to the sliding part 322, and the clamping head 331 on the sliding part 322 is symmetrically arranged with the clamping head 331 on the fixed part 321 (such as Figure 2 As shown, the automatic control member 333 in the fixed body 33 on the sliding portion 322 is aligned with the automatic control member 333 in the fixed body 33 on the fixed portion 321 (as shown in FIG. Figure 2 As shown in Figure 2As shown, when the two center conductors 1 are in the initial fixed state, the threaded locking sleeve 323 is rotated to make the sliding part 322 slide in the direction of the fixed part 321. At this time, the mutually aligned automatic control parts 333 automatically abut against each other and automatically control the corresponding moving ring 3322 to slide axially as the threaded locking sleeve 323 moves, thereby making the corresponding limiting protrusion 3321 and the clamping head 331 controlled by the corresponding inclined contact surface move inward and clamp and fix the corresponding protective sleeve body 2.

[0026] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 The inner core body 31 is fixedly connected to the fixed part 321, the clamping head 331 in the fixed body 33 on the inner core body 31 is elastically connected to the inner core body 31, and the movable ring 3322 is axially slidably connected to the inner core body 31. The automatic control part 333 on the inner core body 31 includes a connecting ring 3332 fixedly connected to a push rod 3331 and a limit block 3333 for limiting the connecting ring 3332. The connecting ring 3332 is sleeved on the inner core body 31, the push rod 3331 is axially slidably connected to the inner core body 31, and the limit block 3333 is fixedly connected to the sliding part 322. During the sliding of the sliding part 322, when the sliding part 322 slides a certain displacement, the limit block 3333 contacts the corresponding connecting ring 3332 and pushes the connecting ring 3332 to slide, so that the push rod 3331 on it pushes the corresponding movable ring 3322, and then the clamping head 331 clamps and fixes the corresponding center conductor 1.

[0027] See also Figure 2 , Figure 4 and Figure 5 An elastic member 3334 is provided between the connecting ring 3332 on the inner core body 31 and the inner core body 31. In the initial state, the connecting ring 3332, under the action of the elastic member 3334, causes the corresponding clamping head 331 to be in an inwardly contracted and elastically clamped state. At this time, the center conductor 1 can be smoothly inserted into the clamping and fixing area of ​​the clamping head 331 and is in a preliminary clamping and fixing state after insertion, so that during the connection process, after one of the center conductors 1 is inserted into the corresponding fixing body 33, the other center conductor 1 can be smoothly inserted and connected, thereby improving the convenience and speed of cable connection.

[0028] See also Figure 1 , Figure 2 and Figure 3In order to further improve the convenience and stability of cable connection, the two fixing bodies 33 on the inner core body 31 are arranged so that the initial fixing force of one fixing body 33 is greater than the initial fixing force of the other fixing body 33, and the fixing body 33 with a larger clamping fixing force also includes an initial control member 334, which is axially slidably connected to the fixing portion 321 and is used to control the sliding of the corresponding moving ring 3322; the initial control member 334 includes a pressing ring 3342 provided with a plurality of supporting rods 3341, the pressing ring 3342 is elastically connected to the fixing portion 321 (can be connected by an elastic structure such as a spring, the elastic structure is not shown in the figure), and the supporting rods 3341 are distributed along the circumference of the central conductor 1 and slide with the fixing portion 321 The center conductor 1 is connected, and the corresponding movable ring 3322 is provided with a contact block 3343 corresponding to the support rod 3341. During the insertion of the center conductor 1, the pressing ring 3342 is pushed, and the support rod 3341 pushes the corresponding movable ring 3322 to move to the right through the contact block 3343, and the corresponding limiting protrusion 3321 moves to the right. At this time, the corresponding clamping head 331 is in a relaxed state, and the center conductor 1 can be smoothly inserted. After that, the pressing is released, the pressing ring 3342 is reset, and the clamping head 331 is reset under the action of the elastic member 3334, and the center conductor 1 of the cabinet is initially clamped and fixed with stability, thereby effectively avoiding the situation that the center conductor 1 is detached again after insertion during the clamping and fixing process, thereby improving the smoothness and stability of the cable connection process.

[0029] See also Figure 1 , Figure 2 and Figure 4 In order to further improve the convenience and reliability of the cable connection process, the inner core 31 includes a connecting base 312 symmetrically provided with a trumpet-shaped guide area 311, the connecting base 312 is fixedly connected to the fixed part 321, the guide area 311 guides the center conductor 1, so that the center conductor 1 is smoothly inserted into the fixed area of ​​the corresponding fixed body 33, wherein a limiting base 313 is arranged between the symmetrical guide areas 311, the limiting base 313 limits the ends of the center conductor 1 respectively and connects the center conductors 1 together, during the connection process, the end of the center conductor 1 is limited by the limiting base 313, so that the center conductor 1 can smoothly complete the insertion of the preset position, and the two center conductors 1 are connected together, further improving the convenience of the connection process, and avoiding the situation where the center conductor 1 is not accurately aligned during the direct docking process, which affects the quality of cable use.

[0030] See also Figure 2 , Figure 3 and Figure 6The fixing body 33 with a smaller initial fixing force also includes a reset member 335, which is fixedly connected to the sliding portion 322 and resets the corresponding automatic control member 333 to an initial state by limiting the corresponding moving ring 3322. The locking cam 331 of the locking cam 332 is locked by the locking cam 332. The locking cam 332 is locked by the locking cam 332. The locking cam 332 is locked by the locking cam 332.

[0031] See also Figure 2 An annular dustproof piece 324 is provided on both the fixed part 321 and the sliding part 322. The annular dustproof piece 324 slides axially and is elastically connected to the corresponding fixed part 321 and the sliding part 322. The annular dustproof piece 324 is tightly attached to the end face of the corresponding outer protective sleeve 2 and cooperates with the outer sleeve 32 to form a dustproof area with a certain sealing function, which effectively prevents dust from entering and affecting the quality of the cable.

[0032] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A coaxial cable, characterized in that: It comprises two central conductors (1) connected to each other; a connector (3) used to connect the two central conductors (1) and simultaneously fix the central conductors (1) and a protective sleeve (2) on the central conductors (1); The connector (3) comprises an inner core (31) and an outer shell (32), wherein two fixing bodies (33) are arranged on the inner core (31) and the outer shell (32), wherein the two fixing bodies (33) on the inner core (31) are used to fix the central conductor (1), and in an initial state, the two fixing bodies (33) fixing the central conductor (1) are in an initial fixing state, and the initial fixing force of one of the fixing bodies (33) on the inner core (31) is greater than the initial fixing force of the other fixing body (33), and during the connection process, one of the central conductors (1) first enters the fixing area of ​​the fixing body (33) with a greater initial fixing force and is in a preliminary fixing state; The fixed body (33) comprises a clamping head (331), a limiting head (332) and an automatic control part (333); the clamping head (331) is distributed circumferentially and an inclined contact surface is provided on the clamping head (331); the limiting head (332) and the automatic control part (333) are both axially slidably provided on the outer sleeve (32); the limiting head (332) cooperates with the inclined contact surface to control the clamping head (331) to synchronously contract inwardly for clamping; The limit head (332) in the fixed body (33) for fixing the central conductor (1) is in an elastic limit state in an initial state, so that the corresponding clamping head (331) is in an initial fixed state, and the fixed body (33) with a large clamping force also includes an initial control member (334), which is axially slidably connected to the outer sleeve (32) and is used to control the sliding of the corresponding limit head (332).

2. A coaxial cable according to claim 1, characterized in that: The outer casing (32) comprises a fixed portion (321) and a sliding portion (322); a threaded locking sleeve (323) is provided between the sliding portion (322) and the fixed portion (321); the threaded locking sleeve (323) is threadedly connected to the fixed portion (321) and rotatably connected to the sliding portion (322); the sliding portion (322) is axially slidably connected to the fixed portion (321); the two fixing bodies (33) on the outer casing (32) are respectively provided on the fixed portion (321) and the sliding portion (322). The automatic control parts (333) are aligned with each other on the sliding part (322), and the threaded locking sleeve (323) rotates to feed the sliding part (322) to the fixed part (321). The automatic control parts (333) abut against each other and control the axial sliding of the corresponding limit heads (332). The inner core (31) is fixedly connected to the fixed part (321), and the initial control part (334) is axially slidably connected to the fixed part (321).

3. A coaxial cable according to claim 1 or 2, characterized in that: The inner core (31) comprises a connecting base (312) symmetrically provided with trumpet-shaped guide areas (311), the connecting base (312) being fixedly connected to the fixing part (321), and the guide areas (311) respectively guide the central conductor (1) so that the central conductor (1) smoothly enters the fixing area of ​​the corresponding fixing body (33).

4. A coaxial cable according to claim 3, characterized in that: A limiting matrix (313) is arranged between the symmetrical guide areas (311), and the limiting matrix (313) limits the ends of the central conductor (1) respectively and connects the central conductors (1) together.

5. A coaxial cable according to claim 2, characterized in that: The fixing body (33) with a small initial fixing force further comprises a reset member (335), wherein the reset member (335) is fixedly connected to the sliding portion (322) and resets the corresponding automatic control member (333) to an initial state by limiting the position of the corresponding automatic control member (333).

6. A coaxial cable according to claim 2, characterized in that: An annular dustproof piece (324) is provided on both the fixed part (321) and the sliding part (322). The annular dustproof piece (324) slides axially along the central conductor (1) and is elastically connected to the corresponding fixed part (321) and the sliding part (322).

7. A coaxial cable according to claim 1, characterized in that: The limiting head (332) comprises a movable ring (3322) provided with a plurality of limiting protrusions (3321), the limiting protrusions (3321) correspond one to one with the clamping head (331), and the movable ring (3322) is slidably arranged along the axial direction of the central conductor (1).

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