CN112476306A

CN112476306A - Be applied to moment spanner of multichannel radio frequency coaxial connector dismouting

Info

Publication number: CN112476306A
Application number: CN202011313437.2A
Authority: CN
Inventors: 张令; 张明伟; 洪扬; 牛鹏飞
Original assignee: CETC 29 Research Institute
Current assignee: CETC 29 Research Institute; Southwest China Research Institute Electronic Equipment
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-03-12

Abstract

The invention discloses a torque wrench applied to the disassembly and assembly of a multi-channel radio frequency coaxial connector, which comprises: the SSMA wrench comprises an SSMA wrench bit, a sawtooth chuck, a spring, a fixed-torque bolt and a wrench handle; the tail end of the SSMA wrench bit is sleeved in the inner cavity of the wrench handle, and the sawtooth chuck, the spring and the fixed-torque bolt are arranged in the inner cavity of the wrench handle; the front end of the SSMA wrench batch head is provided with a semi-closed inner hexagonal clamping groove, the middle end of the SSMA wrench batch head is provided with an arc horizontal slot structure for cables, and the tail end of the SSMA wrench batch head is provided with a sawtooth clamping groove structure; one end of the sawtooth clamping head is provided with a sawtooth clamping groove and is meshed with a sawtooth clamping groove structure at the tail end of the SSMA wrench bit, the other end of the sawtooth clamping head is contacted with a spring, the other end of the spring is contacted with a fixed-moment bolt, and the spring is in a compressed state; and the fixed-moment bolt is matched and connected with the internal thread of the wrench handle. The non-interference fixed torque dismounting of the multi-channel radio frequency coaxial connector in the narrow space of the microwave product is realized.

Description

Be applied to moment spanner of multichannel radio frequency coaxial connector dismouting

Technical Field

The invention belongs to the field of assembly and disassembly of microwave product radio frequency components or module connectors, and particularly relates to a disassembly and assembly tool applied to a multi-channel radio frequency coaxial connector (SSMA series) in a narrow space.

Background

For assembly and disassembly of conventional single-channel rf coaxial connectors, the assembler typically uses an SSMA allen wrench. The wrench comprises a handle and a hexagon socket diameter, and the SSMA connector is loosened by pulling a hexagon socket nut of the SSMA connector. The operation requires large space, is not influenced by peripheral interference, and only can be assembled and disassembled with a single-channel microwave radio frequency product.

For a multi-channel radio frequency microwave component or module, as many as 8-16 channel coaxial connectors (SSMA series) are closely arranged, the space between each channel is small, and the microwave component and the module are positioned in a narrow box body or embedded in the box body, so that the operation space is limited, and the assembly and disassembly can not be realized by using a common SSMA inner hexagon wrench. The method adopted by an assembler at present is to carry out micro-torque rotating assembly or disassembly by using surgical forceps, and the mode has the biggest defect that when a multi-channel radio frequency coaxial connector is disassembled, all channels must be sequentially disassembled from 1 channel, so that the disassembly and assembly efficiency is greatly reduced, the radio frequency coaxial connector and a radio frequency cable are easily damaged, and the torque cannot be ensured.

Chinese patent (CN201220566342.6) discloses a probing SMA wrench, which realizes the purpose of tightening SMA connection by embedding an inner hexagonal structure of a U-shaped rod part with an SMA connector, and can be popularized to an SSMA connector. However, the SMA wrench described in this patent still does not have a constant-torque structure, and thus cannot accurately tighten the SMA connector at a constant torque.

Chinese patent (CN201821609047.8) discloses a torque wrench batch head device applied to SMA connector, which only needs to be used in combination with the existing SMA torque wrench to realize the function of tightening SMA connector with constant torque. The ability of a single set of tools to perform the above functions is not available.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides a torque wrench for dismounting a multichannel radio frequency coaxial connector, and realizes the dismounting of the multichannel radio frequency coaxial connector in a narrow space of a microwave product without interference fixed torque. The multi-channel radio frequency coaxial connector assembling and disassembling torque wrench can obviously improve the operation efficiency, is assembled and disassembled in place, has small requirement on installation space, and has lower manufacturing cost and longer service life.

The purpose of the invention is realized by the following technical scheme:

a torque wrench for disassembly and assembly of a multi-channel radio frequency coaxial connector, the torque wrench comprising: the SSMA wrench comprises an SSMA wrench bit, a sawtooth chuck, a spring, a fixed-torque bolt and a wrench handle; the tail end of the SSMA wrench bit is sleeved in the inner cavity of the wrench handle, and the sawtooth chuck, the spring and the fixed-torque bolt are arranged in the inner cavity of the wrench handle; the front end of the SSMA wrench batch head is provided with a semi-closed inner hexagonal clamping groove, the middle end of the SSMA wrench batch head is provided with an arc horizontal slot structure for cables, and the tail end of the SSMA wrench batch head is provided with a sawtooth clamping groove structure; one end of the sawtooth clamping head is provided with a sawtooth clamping groove and is meshed with a sawtooth clamping groove structure at the tail end of the SSMA wrench batch head, the other end of the sawtooth clamping head is contacted with a spring, the other end of the spring is contacted with a fixed-moment bolt, and the spring is in a compressed state; and the fixed-moment bolt is matched and connected with the internal thread of the wrench handle.

According to a preferred embodiment, the compression of the spring is adjusted by a displacement of the pitch bolt.

According to a preferred embodiment, the torque wrench further comprises a limiting bolt, a guide groove structure is arranged on the side wall of the wrench handle, a threaded hole is formed in the side face of the sawtooth clamping head, and the limiting bolt penetrates through the guide groove structure and is connected with the threaded hole in the sawtooth clamping head in a matched mode.

According to a preferred embodiment, the spacing bolt comprises two states, a tightened and a loosened state, such that the saw tooth cartridge is in two states, a movable state and a non-movable state relative to the wrench handle.

According to a preferred embodiment, the wrench handle is a cylindrical structure, and a knurling structure is arranged on the outer wall of the wrench handle.

According to a preferred embodiment, the SSMA wrench head transitions between the middle and the end by a cylindrical step chamfer.

According to a preferred embodiment, the front end of the inner cavity of the wrench handle is provided with a cylindrical stepped chamfer, and the cylindrical stepped chamfer of the SSMA wrench bit is matched with the cylindrical stepped chamfer of the wrench handle, so that the SSMA wrench bit is nested inside the wrench handle.

According to a preferred embodiment, the saw tooth clamping groove at the tail end of the SSMA wrench head and the saw tooth clamping groove of the saw tooth clamping head are in an isosceles triangle structure.

According to a preferred embodiment, the number of teeth and the inclination of the sawtooth clamping grooves of the SSMA wrench bit end and the sawtooth clamping grooves of the sawtooth clamping head are set based on torque requirements.

According to a preferred embodiment, the tail part of the wrench handle is also provided with a buckle cap.

The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.

The invention has the beneficial effects that: compared with the prior art, the torque wrench can obviously improve the operation efficiency, is assembled and disassembled in place, and has reliable torque and stable quality.

And: 1) the torque wrench can be suitable for fixed-torque disassembly and assembly of a multi-channel radio frequency coaxial connector in a narrow space, and can selectively disassemble and assemble a multi-channel SSMA terminal without mutual interference, so that a radio frequency cable cannot be damaged; 2) the torque wrench has a torque function and can adjust the torque within a certain torque range; 3) the torque wrench can realize the switching between a fixed torque mode and a non-torque mode, and is not different from a common non-torque wrench when in the non-torque mode.

Drawings

FIG. 1 is a schematic view of the torque wrench of the present invention;

FIG. 2 is a schematic view of the torque wrench shown in half section;

FIG. 3 is a diagram of an embodiment of the present invention;

the wrench comprises a 1-SSMA wrench head, a 2-sawtooth chuck, a 3-spring, a 4-fixed-moment bolt, a 5-buckle cap, a 6-wrench handle and a 7-limit bolt.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that, in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments.

Thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations and positional relationships that are conventionally used in the products of the present invention, and are used merely for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, it should be noted that, in the present invention, if the specific structures, connection relationships, position relationships, power source relationships, and the like are not written in particular, the structures, connection relationships, position relationships, power source relationships, and the like related to the present invention can be known by those skilled in the art without creative work on the basis of the prior art.

Referring to fig. 1 and 2, the invention discloses a torque wrench for disassembling and assembling a multi-channel radio frequency coaxial connector, comprising: the SSMA wrench comprises an SSMA wrench head 1, a sawtooth chuck 2, a spring 3, a fixed-moment bolt 4, a buckle cap 5, a wrench handle 6 and a limit bolt 7.

Preferably, the end of the SSMA wrench bit 1 is sleeved in the inner cavity of the wrench handle 6, and the sawtooth chuck 2, the spring 3 and the fixed-torque bolt 4 are arranged in the inner cavity of the wrench handle 6.

The front end of the SSMA wrench batch head 1 is provided with a semi-closed inner hexagonal clamping groove, so that the SSMA connector can be wrapped from the side conveniently, the depth and the size of the clamping groove are limited by design, the depth direction is guaranteed to wrap the SSMA connector completely, and a torque supporting point is convenient to wrap. The middle end of the SSMA wrench batch head 1 is provided with an arc horizontal line groove structure for cables, and the tail end of the SSMA wrench batch head 1 is provided with a sawtooth clamping groove structure.

Further, the SSMA wrench head 1 is in transition between the middle end and the tail end through a cylindrical step chamfer.

One end of the sawtooth clamping head 2 is provided with a sawtooth clamping groove and is meshed with a sawtooth clamping groove structure at the tail end of the SSMA wrench batch head 1. The other end of the sawtooth chuck 2 is in contact with a spring 3, the other end of the spring 3 is in contact with a fixed-moment bolt 4, and the spring 3 is in a compressed state. The spring 3 is a pressure spring, and the rigidity of the spring 3 is limited by the required torque range.

And the fixed-moment bolt 4 is matched and connected with the internal thread of the wrench handle 6. The compression amount of the spring 3 is adjusted through the position movement of the fixed-moment bolt 4. Therefore, the torque wrench has a torque function, and can adjust the torque within a certain torque range.

The side wall of the wrench handle 6 is provided with a guide groove structure, the side surface of the sawtooth chuck 2 is provided with a threaded hole, and the limiting bolt 7 penetrates through the guide groove structure and is connected with the threaded hole on the sawtooth chuck 2 in a matching manner.

The stop bolt 7 comprises two states, a tightened and a loosened state, so that the serrated jaw 2 is in two states, movable and immovable relative to the wrench handle 6.

Preferably, the wrench handle 6 is a cylindrical structure, and a knurled structure is arranged on the outer wall of the wrench handle 6. The tail part of the wrench handle 6 is also provided with a buckle cap 5. There is cylindrical ladder chamfer at the inner chamber front end of spanner handle 6, the cylindrical ladder chamfer of first 1 is criticized to the SSMA spanner matches with the cylindrical ladder chamfer of spanner handle 6 to make first 1 nestification of SSMA spanner criticize inside spanner handle 6.

Preferably, the sawtooth clamping groove at the tail end of the SSMA wrench batch head 1 and the sawtooth clamping groove of the sawtooth clamping head 2 are in an isosceles triangle structure. The tooth number and the inclination of the sawtooth clamping groove at the tail end of the SSMA wrench batch head 1 and the sawtooth clamping groove of the sawtooth clamping head 2 are set based on torque requirements.

Examples

Fig. 3 now takes the 16-channel semi-rigid rf cable coaxial connector dismounting and mounting process in a narrow space as an example, when the multi-channel rf coaxial connector is dismounted and mounted by the torque wrench, the SSMA wrench bit 1 is inserted into the narrow space of the multi-channel connector, and the nut of the SSMA connector is wrapped in the side direction of the hexagon semi-closed slot in the front end to find a stress point; contacting the top of the inner hexagonal clamping groove with the bottom of the nut mounting position, and finding a bottom positioning point; the semi-rigid radio frequency cable is arranged in the arc horizontal slot. When the torque is larger than a set torque value, the upward acting component force borne by the sawtooth clamping head 2 is larger than the resistance force of the spring 3, the SSMA wrench batch head 1 can rotate relative to the wrench handle 6, and the SSMA connector cannot be rotated; when the torque is smaller than the set torque value, the upward acting component force of the sawtooth chuck 2 is smaller than the resistance force of the spring 3, the SSMA wrench head 1 can not rotate relative to the wrench handle 6, and the SSMA connector can be rotated. Therefore, the function of fixing the torque of the torque wrench is realized.

Based on above-mentioned example basis, further, adjust the torque mode can be switched to spacing bolt 7 elasticity, and spacing bolt 7 is when being in the state of unscrewing, and sawtooth dop 2 can be followed spanner handle 6 axial motion, and SSMA spanner is criticized first 1 and can be greater than relative sawtooth dop 2 motion when setting for the moment value, and realizes the moment function surely. When the limiting bolt 7 is in a screwed state, the sawtooth chuck 2 is locked and cannot move, and the SSMA wrench bit 1 still cannot relatively rotate after receiving torque, so that the fixed torque function is not available.

Based on the above example, further, the fixed-moment bolt 4 also has a torque adjusting function, and the compression amount of the spring is changed by rotating the position of the fixed-moment bolt 4, so that the torque of the wrench is adjusted.

The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be combined with any other basic example and selection example at will. Numerous combinations will be known to those skilled in the art.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a be applied to moment spanner of multichannel radio frequency coaxial connector dismouting which characterized in that, the moment spanner includes: the SSMA wrench comprises an SSMA wrench head (1), a sawtooth chuck (2), a spring (3), a fixed-moment bolt (4) and a wrench handle (6);

the tail end of the SSMA wrench bit (1) is sleeved in an inner cavity of the wrench handle (6), and the sawtooth chuck (2), the spring (3) and the fixed-moment bolt (4) are arranged in the inner cavity of the wrench handle (6);

the front end of the SSMA wrench batch head (1) is provided with a semi-closed inner hexagonal clamping groove, the middle end of the SSMA wrench batch head (1) is provided with an arc horizontal slot structure for cables, and the tail end of the SSMA wrench batch head (1) is provided with a sawtooth clamping groove structure;

one end of the sawtooth clamping head (2) is provided with a sawtooth clamping groove and is meshed with a sawtooth clamping groove structure at the tail end of the SSMA wrench batch head (1), the other end of the sawtooth clamping head (2) is contacted with a spring (3), the other end of the spring (3) is contacted with a fixed-moment bolt (4), and the spring (3) is in a compressed state;

and the fixed-moment bolt (4) is matched and connected with the internal thread of the wrench handle (6).

2. The torque wrench applied to disassembling and assembling the multichannel radio frequency coaxial connector as claimed in claim 1, characterized in that the compression amount of the spring (3) is adjusted by the position movement of the fixed-torque bolt (5).

3. Torque wrench for the disassembly and assembly of multichannel radio frequency coaxial connectors according to claim 2, characterized in that it further comprises a limit bolt (7),

the side wall of the wrench handle (6) is provided with a guide groove structure, the side face of the sawtooth chuck (2) is provided with a threaded hole, and the limiting bolt (7) penetrates through the guide groove structure and is connected with the threaded hole in the sawtooth chuck (2) in a matched mode.

4. Torque wrench for the disassembly and assembly of multichannel radio-frequency coaxial connectors according to claim 3, characterized in that said stop bolt (7) comprises two states of screwing and unscrewing, so that the serrated chuck (2) is in two states of being movable and not movable with respect to the wrench handle (6).

5. The torque wrench applied to the disassembly and assembly of the multichannel radio frequency coaxial connector is characterized in that the wrench handle (6) is of a cylindrical structure, and a knurling structure is arranged on the outer wall of the wrench handle (6).

6. The torque wrench applied to disassembling and assembling the multichannel radio frequency coaxial connector as claimed in claim 5, wherein the SSMA wrench head (1) is in transition between the middle end and the tail end through a cylindrical step chamfer.

7. The torque wrench applied to disassembling and assembling the multichannel radio frequency coaxial connector is characterized in that the front end part of the inner cavity of the wrench handle (6) is provided with a cylindrical stepped chamfer, and the cylindrical stepped chamfer of the SSMA wrench head (1) is matched with the cylindrical stepped chamfer of the wrench handle (6), so that the SSMA wrench head (1) is nested inside the wrench handle (6).

8. The torque wrench for disassembling and assembling the multichannel radio frequency coaxial connector as claimed in claim 1, wherein the sawtooth clamping grooves at the end of the SSMA wrench batch head (1) and the sawtooth clamping grooves of the sawtooth clamping head (2) are in an isosceles triangle structure.

9. The torque wrench for disassembling and assembling the multichannel radio frequency coaxial connector as claimed in claim 8, wherein the number of teeth and the inclination of the sawtooth clamping grooves of the SSMA wrench batch head (1) end and the sawtooth clamping grooves of the sawtooth clamping head (2) are set based on torque requirements.

10. The torque wrench applied to disassembling and assembling the multichannel radio frequency coaxial connector as claimed in claim 1, wherein the tail part of the wrench handle is further provided with a buckle cap (5).