A power tool for coaxial feed line and radio frequency connector installation

Abstract

This invention provides an electric tool for installing coaxial feeders and RF connectors, comprising: a housing; a wire stripping module disposed within the housing, the wire stripping module including a first power source and a wire stripping execution component driven by the first power source; a crimping module disposed within the housing and arranged side-by-side with the wire stripping module, the crimping module including a second power source and a crimping execution component driven by the second power source; a switching component having a first working position, a second working position, and an idle position, the input terminal of the switching component being connected to a power supply, and the output terminal of the switching component being electrically connected to the first power source and the second power source respectively, selectively connecting the power supply to either the first power source or the second power source; and an interlocking component electrically connected to both the first power source and the second power source, wherein when either the first power source or the second power source is in a working state, the interlocking component cuts off the power supply circuit of the other power source.

Description

Technical Field

[0001] This invention relates to the field of power tool technology, and more particularly to a power tool for mounting coaxial feeders and radio frequency connectors. Background Technology

[0002] During the construction and maintenance of communication base stations, it is necessary to strip the coaxial feeder and crimp the RF connector. Currently, these two processes generally use an electric wire stripping tool (such as an electric drill with a wire stripping blade) to remove the outer sheath of the feeder, and an electric hydraulic crimping tool to secure the connector to the feeder.

[0003] During the construction of high-altitude base station towers, workers must carry both of these separate tools to the work site. The combined weight of the two tools increases the physical strain of climbing at height. Even more inconvenient is the fact that these two tools typically come with incompatible battery packs and chargers; the different battery specifications prevent them from being interchangeable. If one tool runs out of power, even if the other tool still has some charge, it cannot be used in an emergency, easily forcing a work stoppage. Furthermore, the limited space on the high-altitude work platform forces workers to frequently put down the wire stripping tool and pick up the crimping tool to switch tasks, creating a serious hazard of falling objects. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an electric tool for installing coaxial feeders and radio frequency connectors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an electric tool for installing coaxial feeders and RF connectors, comprising a housing; a wire stripping module disposed within the housing, the wire stripping module including a first power source and a wire stripping execution component driven by the first power source; a crimping module disposed within the housing and arranged side-by-side with the wire stripping module, the crimping module including a second power source and a crimping execution component driven by the second power source; a switching component having a first working position, a second working position, and an idle position, the input terminal of the switching component being connected to a power supply, and the output terminal of the switching component being electrically connected to the first power source and the second power source respectively, selectively connecting the power supply to the first power source or the second power source; and an interlocking component electrically connected to the first power source and the second power source respectively, wherein when either the first power source or the second power source is in a working state, the interlocking component cuts off the power supply circuit of the other power source.

[0006] Optionally, a power module is also included, which is installed in the housing. The output of the power module is electrically connected to the input of the switching component, and the switching component selectively supplies power to the first power source or the second power source.

[0007] Optionally, the switching component is a mechanical gear switch, and its gear is set such that when switching from the first working position or the second working position to another working position, it must pass through the empty position, which corresponds to the state where both power sources are de-energized.

[0008] Optionally, the interlocking assembly includes a first switching element and a second switching element. The first switching element is connected to the power supply circuit of the second power source, and its control terminal is electrically connected to the power supply circuit of the first power source, for disconnecting the power supply circuit of the second power source when the first power source is energized. The second switching element is connected to the power supply circuit of the first power source, and its control terminal is electrically connected to the power supply circuit of the second power source, for disconnecting the power supply circuit of the first power source when the second power source is energized.

[0009] Optionally, the wire stripping execution component is detachably connected to the output end of the first power source, and the crimping execution component is detachably connected to the output end of the second power source. Both can be replaced with working heads of different specifications to adapt to different models of feeders and connectors.

[0010] Optionally, both the wire stripping execution component and the crimping execution component are detachably connected to the output end of the corresponding power source via a unified quick-change interface.

[0011] Optionally, the first power source is a rotary motor for driving the wire stripping execution component to rotate, and the second power source is a hydraulic pump motor for driving the crimping execution component.

[0012] Optionally, the power module is a detachable battery pack, which is fixed to the housing by a clip, and the battery pack has a built-in over-discharge protection board.

[0013] Optionally, a resettable thermal protection switch is provided in the power supply circuit of the first power source and the power supply circuit of the second power source respectively; the rated current of a single contact of the switching component is greater than the stall current of the corresponding power source, and the contact spacing meets the DC arc extinguishing requirements.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This application provides a power tool for installing coaxial feeders and RF connectors. By integrating the wire stripping module and crimping module into a single unit and sharing the same power module, the weight carried by construction personnel is effectively reduced, and the construction interruption problem caused by battery incompatibility is eliminated. Simultaneously, by incorporating a mechanical switching component with a designated space and a hardware interlocking component, a dual safety guarantee is constructed, completely eliminating the potential danger of simultaneous accidental start-up of two power sources from both physical and electrical perspectives, greatly improving the safety and reliability of high-altitude operations. Furthermore, replaceable quick-change heads and comprehensive electrical protection (thermal protection, contact arc suppression) further enhance the tool's adaptability to various working conditions and its service life. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Legend: Figure 1 This is a schematic diagram of the main structure of the present invention; In the diagram: 1. Housing; 2. Wire stripping module; 21. First power source; 22. Wire stripping execution component; 3. Crimping module; 31. Second power source; 32. Crimping execution component; 4. Switching component; 5. Interlocking component; 51. First switching element; 52. Second switching element; 6. Power module. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] It will be understood that although the terms “first,” “second,” “third,” “fourth,” etc., may be used here to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0019] Combined with appendix Figure 1As shown, this embodiment of the invention provides a power tool for installing coaxial feeders and RF connectors, including a housing 1 that carries the various components and provides a gripping function, a wire stripping module 2, a crimping module 3, a switching assembly 4, a power module 6, and an interlocking assembly 5. The wire stripping module 2 and the crimping module 3 are arranged side by side inside the housing 1, sharing the same housing 1 and power supply, thereby reducing the carrying burden on construction personnel working at heights.

[0020] The wire stripping module 2 is located at the front end of the housing 1 and includes a first power source 21 and a wire stripping execution component 22. The first power source 21 is specifically a rotary motor (such as a DC brushless motor), which is connected to the wire stripping execution component 22 via a drive shaft. The wire stripping execution component 22 has a ring-shaped wire stripping head structure. When the operator activates the wire stripping function, the rotary motor drives the wire stripping head to rotate at high speed, which can quickly and evenly cut and strip the insulation layer and metal shielding layer on the outside of the coaxial feeder, preparing for subsequent crimping.

[0021] The crimping module 3 is housed within the housing 1 and arranged side-by-side with the wire stripping module 2. It includes a second power source 31 and a crimping execution assembly 32. Since the installation of the RF connector requires extremely high mechanical clamping force, the second power source 31 specifically employs a hydraulic pump motor. When the hydraulic pump motor operates, it drives a miniature plunger pump, converting electrical energy into hydraulic energy. The high-pressure oil pushes the piston inside the crimping execution assembly 32 to contract radially, applying a tremendous clamping force sufficient to cause metal plastic deformation to the RF connector placed within the crimping head, thus completing the crimping of the feeder and the connector.

[0022] The switching component 4 is located in the operating area of ​​the housing 1 and is used to select between wire stripping mode and crimping mode. The switching component 4 is a mechanical position switch with three physical positions: a first working position for wire stripping, a second working position for crimping, and a neutral position for the stop state. For safe operation, the internal structure of this mechanical position switch is designed so that when switching from the first working position to the second working position (or vice versa), the lever must pass through the neutral position to reach the target position. The neutral position physically disconnects the power supply to all power sources, putting the tool into a completely power-off standby state, thereby preventing momentary electrical sparks or accidental mechanical start-up due to operator error.

[0023] Furthermore, a working status indicator light is also provided on the housing 1, which is linked to the switching component 4. When the switching component 4 is switched to the first working position, the first-color LED lights up; when switched to the second working position, the second-color LED lights up; and when switched to the neutral position, the indicator light turns off. This allows construction personnel to quickly confirm the current working mode of the tool visually, even in noisy environments, avoiding operational errors caused by auditory interference.

[0024] The interlock assembly 5 is located on a circuit board inside the housing 1 and mainly includes two electromagnetic relays: a first switching element 51 (specifically, the first relay) and a second switching element 52 (specifically, the second relay). To achieve electrical protection against mutual restarting, the first switching element 51 and the second switching element 52 are cross-connected and are respectively coordinated with the first power source 21 and the second power source 31.

[0025] Specifically, the coil control terminal of the first switching element 51 is electrically connected to the power supply circuit of the first power source 21, and the coil control terminal of the second switching element 52 is electrically connected to the power supply circuit of the second power source 31. Simultaneously, the negative terminals of the coils of both the first and second switching elements 51 are directly connected to the common negative terminal of the battery. In the output circuit, the normally closed contact of the first switching element 51 is connected in series in the power supply circuit of the second power source 31, and the normally closed contact of the second switching element 52 is connected in series in the power supply circuit of the first power source 21.

[0026] When the operator switches the switching assembly 4 to the first working position, the first power source 21 is energized and starts. Simultaneously, the coil of the first switching element 51 receives the power supply signal from the first power source 21, causing the first switching element 51 to instantly energize and engage. This engagement physically breaks the normally closed contact connected in series in the power supply circuit of the second power source 31, thus cutting off its power supply line before the second power source 31 receives any instruction. Conversely, when switched to the second working position, the second switching element 52 instantly energizes, cutting off the first power source 21. If the mechanical lever of the switching assembly 4 accidentally jams or sticks, resulting in the simultaneous output of two voltages, the first switching element 51 and the second switching element 52 will simultaneously energize and engage, each cutting off the other's power supply circuit, thereby instantly stopping the entire tool and preventing problems such as torque and battery explosion caused by the simultaneous rotation of two power sources.

[0027] In another embodiment, the interlocking component 5 can also be implemented using a double-pole double-throw mechanical interlocking switch. This interlocking switch has two sets of normally open contacts and one set of mechanical interlocking levers. The two sets of normally open contacts are connected in series in the power supply circuits of the first power source 21 and the second power source 31, respectively. The mechanical interlocking levers physically prevent the two sets of contacts from being simultaneously closed. This embodiment combines the switching function and the interlocking function into one, resulting in a more streamlined structure, suitable for low-power tool scenarios where cost and size are critical. The output ends of the wire stripping actuator 22 and the first power source 21 are connected detachably via a unified quick-change interface; the output ends of the crimping actuator 32 and the second power source 31 are also connected detachably via the same unified quick-change interface. Construction personnel can directly disassemble the wire stripper head and replace it with a head of a different inner diameter, or disassemble the crimping die and replace it with a crimping die of the corresponding size, based on the actual feeder model and connector specifications, without needing to replace the entire power tool.

[0028] In this embodiment, the power module 6 is a detachable battery pack, which is detachably fixed to the bottom of the housing 1 or the end of the grip section by a snap-fit ​​structure. The battery pack integrates a battery over-discharge protection board, which is connected in series with the battery cells. When the battery voltage drops below a preset safety threshold due to discharge, the discharge circuit is automatically cut off to prevent permanent damage to the battery due to over-discharge, thereby extending the service life of the battery pack and ensuring operational safety.

[0029] In another embodiment, the power module 6 can also be powered by an external power adapter. A power interface is provided at the bottom or rear of the housing 1, which connects to an external AC power source or a high-capacity portable power supply via a cable. This embodiment is particularly suitable for long-term continuous operation at tower ground maintenance stations or pre-installed scenarios within factories. Furthermore, the housing 1 can simultaneously feature a battery pack clip structure and an external power interface, forming a dual-mode power supply architecture. The internal circuitry automatically identifies and prioritizes the use of external power, switching to battery power when the external power is disconnected.

[0030] To ensure the safe operation of the motor, a resettable thermal protection switch is connected in series in the power supply circuits of the first power source 21 and the second power source 31. This thermal protection switch automatically cuts off the circuit by relying on the physical deformation of its internal bimetallic strip when the motor experiences a surge in current and a rapid increase in temperature due to excessive external resistance. After the motor cools down naturally, the switch automatically closes and resets, eliminating the need for manual fuse replacement and preventing the motor coils from burning out due to overheating.

[0031] Finally, it should be noted that the above embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. All should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

[0032] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A power tool for mounting coaxial feeders and RF connectors, characterized in that, include: Shell (1); The wire stripping module (2) is disposed inside the housing (1). The wire stripping module (2) includes a first power source (21) and a wire stripping execution component (22) driven by the first power source (21). The crimping module (3) is disposed inside the housing (1) and arranged side by side with the wire stripping module (2). The crimping module (3) includes a second power source (31) and a crimping execution component (32) driven by the second power source (31). The switching component (4) has a first working position, a second working position and an empty position. The input end of the switching component (4) is connected to the power supply, and the output end of the switching component (4) is electrically connected to the first power source (21) and the second power source (31) respectively. The power supply can be selectively connected to the first power source (21) or the second power source (31). The interlock component (5) is electrically connected to the first power source (21) and the second power source (31) respectively. When either the first power source (21) or the second power source (31) is in operation, the interlock component (5) cuts off the power supply circuit of the other power source.

2. The power tool according to claim 1, characterized in that, It also includes a power module (6) installed in the housing (1). The output of the power module (6) is electrically connected to the input of the switching component (4), and the switching component (4) selectively supplies power to the first power source (21) or the second power source (31).

3. The power tool according to claim 1, characterized in that, The switching component (4) is a mechanical gear switch, and its gear is set such that when switching from the first working position or the second working position to another working position, it must pass through the empty position, which corresponds to the state where both power sources are de-energized.

4. The power tool according to claim 1, characterized in that, The interlocking component (5) includes a first switching element (51) and a second switching element (52). The first switching element (51) is connected to the power supply circuit of the second power source (31), and its control terminal is electrically connected to the power supply circuit of the first power source (21) for disconnecting the power supply circuit of the second power source (31) when the first power source (21) is energized. The second switching element (52) is connected to the power supply circuit of the first power source (21), and its control terminal is electrically connected to the power supply circuit of the second power source (31) for disconnecting the power supply circuit of the first power source (21) when the second power source (31) is energized.

5. The power tool according to claim 1, characterized in that, The wire stripping execution component (22) is detachably connected to the output end of the first power source (21), and the crimping execution component (32) is detachably connected to the output end of the second power source (31). Both can be replaced with working heads of different specifications to adapt to different types of feeders and connectors.

6. The power tool according to claim 5, characterized in that, Both the wire stripping execution component (22) and the crimping execution component (32) are detachably connected to the output end of the corresponding power source via a unified quick-change interface.

7. The power tool according to claim 1, characterized in that, The first power source (21) is a rotary motor for driving the wire stripping execution component (22) to rotate, and the second power source (31) is a hydraulic pump motor for driving the crimping execution component (32).

8. The power tool according to claim 2, characterized in that, The power module (6) is a detachable battery pack, which is fixed to the housing (1) by a buckle, and the battery pack has an over-discharge protection board built in.

9. The power tool according to claim 1, characterized in that, The power supply circuit of the first power source (21) and the power supply circuit of the second power source (31) are respectively equipped with resettable thermal protection switches; the rated current of a single contact of the switching component (4) is greater than the stall current of the corresponding power source, and the contact spacing meets the requirements of DC arc extinguishing.

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