CN116197506A - Sealing device - Google Patents

Abstract

The application discloses a seal welding device, which belongs to the technical field of laser emitter manufacturing, and comprises a first electrode, a second electrode, a first support surface and a second support surface, wherein the first support surface and the second support surface are intersected with each other, so that a bearing area for bearing a tube seat is formed, a first outer wall of the tube seat can be supported by the first support surface, and a second outer wall of the tube seat can be supported by the second support surface; through set up the region of dodging that is used for dodging the pipe cap on the second electrode to dodge regional edge and set up pressure welding portion, can utilize pressure welding portion to support the pipe cap on the tube socket, and through the first welded segment that sets up relatively with first holding surface, support the first joint portion of pipe cap at the first inner wall of tube socket, through the second welded segment that sets up relatively with the second holding surface, support the second joint portion of pipe cap on the second inner wall of tube socket, can realize welding pipe cap and tube socket on different planes, thereby can be used for sealing and welding the laser emitter of pipe cap and tube socket on different planes and encapsulate.

Description

Sealing device

Technical Field

The application belongs to the technical field of laser emitter manufacturing, and particularly relates to a seal welding device.

Background

The traditional airtight TO (Transistor Outline transistor shell) is coaxially packaged, the tube cap and the tube seat are sealed and welded on the same plane, the bottom surface of the tube seat with larger area is mostly used for leading out pins and welding a flexible plate, a good heat dissipation effect cannot be achieved, only the side surface of the tube seat can be used for dissipating heat, but the side surface area is small and far away from a chip, and the heat dissipation performance is poor.

If the cap and the tube seat of the laser transmitter are sealed and welded on different planes, the heat dissipation performance is optimized TO a certain extent, but the structure cannot multiplex the existing TO automation equipment for packaging, so that industrial automation production cannot be realized.

Disclosure of Invention

The invention aims to: the embodiment of the application provides a seal welding device, aims at solving the technical problem that laser transmitters welded on different planes by pipe caps and pipe seats cannot multiplex the existing TO automation equipment for packaging and cannot realize industrial automatic production.

The technical scheme is as follows: the sealing device is used for sealing and welding the tube seat and the tube cap of the laser transmitter;

the seal welding device comprises:

the first electrode comprises a first supporting surface and a second supporting surface which are arranged in an intersecting manner, a bearing area is formed between the first supporting surface and the second supporting surface, and the bearing area is used for bearing the tube seat;

the second electrode is provided with an avoidance area, the edge of the avoidance area is provided with a pressure welding part protruding out of the avoidance area, the avoidance area is used for avoiding the pipe cap, and the pressure welding part is used for propping the pipe cap against the pipe seat;

The welding part comprises a first welding section and a second welding section which are connected in an intersecting manner, when the welding part is used for propping the pipe cap on the pipe seat, the first welding section and the first supporting surface are oppositely arranged in a first direction, the second welding section and the second supporting surface are oppositely arranged in a second direction, the first direction is perpendicular to the first supporting surface, the second direction is perpendicular to the second supporting surface, and the first direction and the second direction are intersected.

In some embodiments, the first direction and the second direction have an angle α, the first support surface and the second support surface have an angle β, and the first welding segment and the second welding segment have an angle γ, wherein α=β=γ.

In some embodiments, the press-welding portion presses the cap against the stem in a third direction, the third direction is an axial direction of the seal welding device, an included angle between the third direction and the first direction and the second direction is δ, and δ=α/2.

In some embodiments, the angle between the first direction and the second direction is α, and 60 ° or less α or less 135 °.

In some embodiments, the first direction is perpendicular to the second direction.

In some embodiments, the first support surface and/or the second support surface is provided with an avoidance groove, and the avoidance groove is used for avoiding pins of the laser transmitter.

In some embodiments, the soldering device further comprises a third electrode;

the bearing area is formed at one end of the first electrode, and the third electrode can be connected to the other end of the first electrode; the third electrode and the second electrode are used for supplying electricity with different polarities, and the first electrode is powered by the third electrode;

or alternatively, the process may be performed,

the avoidance area is arranged at one end of the second electrode, and the third electrode can be connected to the other end of the second electrode; the third electrode and the first electrode are used for being connected with electricity with different polarities, and the second electrode is powered through the third electrode.

In some embodiments, when the press-fit portion presses the cap against the stem, an orthographic projection of the first weld segment on the first support surface is located within the first support surface, and an orthographic projection of the second weld segment on the second support surface is located within the second support surface.

In some embodiments, the first electrode is provided with two pick-and-place grooves, and the two pick-and-place grooves are arranged on two sides of the bearing area and are communicated with the bearing area.

In some embodiments, the first electrode is provided with a limit portion for positioning the stem, the limit portion being provided at the first support surface and/or the second support surface.

In some embodiments, the first electrode is a unitary metal structure and/or the second electrode is a unitary metal structure.

In some embodiments, the first electrode comprises:

a first pole;

the first connecting terminal is arranged at one end of the first pole and used for electrifying the first pole, and the bearing area is formed at the other end of the first pole;

and/or the number of the groups of groups,

the second electrode includes:

a second post;

the second connecting terminal is arranged at one end of the second pole and used for electrifying the second pole, and the avoidance area is arranged at the other end of the second pole.

The beneficial effects are that: compared with the prior art, the seal welding device of this application embodiment includes: the first electrode comprises a first supporting surface and a second supporting surface which are arranged in an intersecting manner, a bearing area is formed between the first supporting surface and the second supporting surface, and the bearing area is used for bearing the tube seat; the second electrode is provided with an avoidance area, the edge of the avoidance area is provided with a pressure welding part protruding from the avoidance area, the avoidance area is used for avoiding the pipe cap, and the pressure welding part is used for propping the pipe cap against the pipe seat; the welding part comprises a first welding section and a second welding section which are connected in an intersecting manner, when the welding part supports the pipe cap on the pipe seat, the first welding section and the first supporting surface are oppositely arranged in a first direction, the second welding section and the second supporting surface are oppositely arranged in a second direction, the first direction is perpendicular to the first supporting surface, the second direction is perpendicular to the second supporting surface, and the first direction and the second direction are intersected. The seal welding device is provided with a double-electrode structure which can be used by the existing TO automatic equipment, a first supporting surface and a second supporting surface are arranged on a first electrode, and a bearing area for bearing a tube seat is formed by intersecting the first supporting surface and the second supporting surface, so that a first outer wall of the tube seat can be supported by the first supporting surface, and a second outer wall of the tube seat can be supported by the second supporting surface; through set up the region of dodging that is used for dodging the pipe cap on the second electrode TO dodge regional edge and set up pressure welding portion, can utilize pressure welding portion TO support the pipe cap on the tube socket, and through the first welding section that sets up relatively with first holding surface, support the first joint portion of pipe cap at the first inner wall of tube socket, through the second welding section that sets up relatively with the second holding surface, support the second joint portion of pipe cap on the second inner wall of tube socket, can realize welding pipe cap and tube socket on different planes, thereby can be applied TO current TO automation equipment, seal the laser emitter of welding on different planes TO pipe cap and tube socket, realize industrial automatic production.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a seal welding device according to an embodiment of the present application;

FIG. 2 is a schematic perspective view of a first electrode of the soldering apparatus of FIG. 1;

FIG. 3 is a schematic perspective view of the seal welding apparatus of FIG. 2 after placement of the laser transmitter;

fig. 4 is a schematic perspective view of the first electrode viewed at another angle;

FIG. 5 is a schematic view of the partial enlarged structure of the area A in FIG. 4;

FIG. 6 is a schematic perspective view of a second electrode of the seal welding device according to the embodiment of the present application;

FIG. 7 is a schematic view of the partial enlarged structure of the area B in FIG. 6;

FIG. 8 is a schematic view of a perspective structure of the first electrode after placement of the laser transmitter;

FIG. 9 is a schematic view of an exploded part structure of a seal welding device according to an embodiment of the present disclosure;

FIG. 10 is a schematic view of the explosive structure of the part of the sealing device of FIG. 9 viewed from another angle;

Fig. 11 is a schematic front view of a seal welding device according to an embodiment of the present application;

FIG. 12 is a schematic cross-sectional view of the seal welding apparatus of FIG. 11 taken along line O-O;

FIG. 13 is a schematic view of a partial enlarged structure of the region C in FIG. 12;

FIG. 14 is a schematic view of an exploded part construction of a seal device according to further embodiments of the present application;

FIG. 15 is a schematic cross-sectional view of the seal welding apparatus of FIG. 14;

fig. 16 is a schematic perspective view of a laser transmitter according to a first embodiment of the present application;

FIG. 17 is a schematic diagram of an assembled configuration of a header and pins of the laser transmitter of FIG. 16;

fig. 18 is a schematic perspective view of a laser transmitter according to a second embodiment of the present application;

fig. 19 is a schematic perspective view of a cap according to a second embodiment of the present application;

FIG. 20 is a schematic cross-sectional view of the laser transmitter of FIG. 18;

fig. 21 is a schematic perspective view of a laser transmitter according to a third embodiment of the present application;

fig. 22 is a schematic diagram showing a front view of a laser transmitter according to a third embodiment of the present application;

FIG. 23 is a schematic cross-sectional view of the laser transmitter of FIG. 21 taken along line A-A;

fig. 24 is a schematic diagram showing a front view of a laser transmitter according to a fourth embodiment of the present application;

reference numerals: 20-a seal welding device; 200-a first electrode; 201-a first pole; 202-a first connection terminal; 203-a first support surface; 204-a second support surface; 205-a carrying area; 206-avoiding grooves; 207-taking and placing grooves; 210-a second electrode; 211-second pole; 212-a second connection terminal; 213-avoidance region; 214-press welding part; 215-a first welding segment; 216-a second welding section; 220-a third electrode; 221-third pole; 222-a third connection terminal; 10-a laser emitter; 100-tube seats; 110-a first carrier; 111-a first inner wall; 112-a first outer wall; 120-a second carrier; 121-a second inner wall; 122-a second outer wall; 130-a laser assembly; 131-a semiconductor laser; 132-a laser substrate; 140-pins; 141-a connection; 142-insulating part; 150-pipe cap; 151-body; 152-a first bond; 153-a second junction; 154-a first opening; 155-a first light window; 156-a second opening; 157-a second light window; 1581-a first flange portion; 1582—a first weld; 1591-a second flange portion; 1592-second weld; 160-a lens; 170-a monitoring chip; 180-positioning part; 190-accommodation space.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

In the description of the present application, it should be understood that, in the description of the present application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality" is two or more, and at least one means may be one, two or more, unless explicitly defined otherwise.

It should also be noted that in the description of the present application, "perpendicular" means completely perpendicular by 90 ° or almost completely perpendicular, for example, calculated as perpendicular in the range of 80 ° to 100 °, and similarly, "parallel" means completely parallel or almost completely parallel, for example, calculated as parallel in the range of 10 ° of completely parallel.

And, in the description of the present application, "intersecting" means that one face has an angle with the other face, or one direction has an angle with the other direction, whereby the two directions of extension of the "intersecting" are different, and the angle is not 0 ° or 180 °. For example, in the embodiment of the present application, the first direction X and the second direction Y intersect, that is, an included angle between the first direction X and the second direction Y is greater than 0 ° and less than 180 °.

The applicant notes that the conventional airtight TO is a coaxial package, the Cap (Metal Cap) and the socket (Header) are sealed and welded on the same plane, the bottom surface of the socket with a larger area is mostly used for leading out pins (Pin) and welding a flexible board, so that a good heat dissipation effect cannot be achieved, only the side surface of the socket can be used for dissipating heat, but the side surface area is small, the distance from the chip is far, and the heat dissipation performance is poor.

In view of this, as shown in fig. 16 to 20, the applicant has developed a laser transmitter 10, in which the cap 150 of the laser transmitter 10 and the stem 100 are sealed and welded on different planes, so that two planes can be used for leading out the pins 140 and arranging the heat dissipating device respectively in the structure, and the heat dissipating performance is optimized to a certain extent.

Specifically, the laser transmitter 10 basically includes a stem 100, a laser assembly 130 and a plurality of leads 140. The stem 100 includes a first inner wall 111 and a first outer wall 112 opposite in a first direction X, and a second inner wall 121 and a second outer wall 122 opposite in a second direction Y, the first direction X intersecting the second direction Y. The laser component 130 is arranged on the first inner wall 111 and is in heat conduction connection with the first inner wall 111; a plurality of pins 140 are disposed through the second inner wall 121 and the second outer wall 122, the pins 140 being electrically connected with the laser assembly 130. The laser transmitter 10 further comprises a tube cap 150, wherein the tube cap 150 is connected with the tube seat 100 and encloses a containing space 190, and the laser component 130 is positioned in the containing space 190; the cap 150 includes a body 151, a first bonding portion 152 and a second bonding portion 153 are disposed at an edge of the body 151, the first bonding portion 152 is connected with the first inner wall 111 in a sealing manner, and the second bonding portion 153 is connected with the second inner wall 121 in a sealing manner. The applicant has also noted that this architecture does not allow multiplexing existing TO automation devices for packaging.

In view of this, the embodiment of the present application provides a sealing device 20, where the sealing device 20 can multiplex the existing TO automation equipment, and package the laser transmitter 10 with the pipe cap 150 and the pipe socket 100 sealed on different planes, so as TO implement industrial automation production.

Referring to fig. 1, fig. 1 illustrates a three-dimensional structure of a sealing device 20 according to an embodiment of the present application, where the sealing device 20 is used for sealing and welding a tube socket 100 and a tube cap 150 of the laser transmitter 10; the first electrode 200 and the second electrode 210 are electrode structures which can be applied TO the existing TO automation equipment (automatic or semi-automatic capping machine), and particularly can be appropriately designed according TO the electrode size style required by the TO automation equipment.

For example, in some embodiments, the first electrode 200 includes a first pole 201 and a first connection terminal 202, the first connection terminal 202 is disposed at one end of the first pole 201, the first pole 201 and the first connection terminal 202 are both cylindrical, the first connection terminal 202 is used for accessing TO an TO automation device TO pass current, and the first pole 201 is powered through the first connection terminal 202. The second electrode 210 includes a second post 211 and a second connection terminal 212, the second connection terminal 212 is disposed at one end of the second post 211, the second post 211 and the second connection terminal 212 are both cylindrical, and the second connection terminal 212 is used for being connected TO the TO automation device TO supply current, and the second post 211 and the second connection terminal 212 are powered.

It will be appreciated that, as a resistance welding tool of the laser transmitter 10, the sealing device 20 may be used to apply different polarities to the electricity applied to the first electrode 200 and the second electrode 210, for example, the first electrode 200 may be applied to the positive electrode and the second electrode 210 may be applied to the negative electrode, or the first electrode 200 may be applied to the negative electrode and the second electrode 210 may be applied to the positive electrode.

Referring to fig. 2, 3 and 4, fig. 2 illustrates a perspective structure of the first electrode 200 of the sealing device 20 in fig. 1, fig. 3 illustrates a perspective structure of the sealing device 20 in fig. 2 after the laser transmitter 10 is placed, fig. 4 illustrates a perspective structure of the first electrode 200 viewed at another angle, and fig. 5 illustrates a partially enlarged structure of the region a in fig. 4.

The first electrode 200 includes a first supporting surface 203 and a second supporting surface 204 disposed to intersect, and a bearing area 205 is formed between the first supporting surface 203 and the second supporting surface 204, and the bearing area 205 is used for bearing the stem 100. When the socket 100 is carried in the carrying area 205, the first supporting surface 203 and the second supporting surface 204 may respectively support two outer walls of the socket 100.

Referring to fig. 6 and fig. 7 together, fig. 6 illustrates a perspective structure of a second electrode 210 of the soldering device 20 according to the embodiment of the present application, and fig. 7 illustrates a partially enlarged structure of a region B in fig. 6.

The second electrode 210 is provided with an avoidance area 213, the edge of the avoidance area 213 is provided with a pressure welding part 214, the avoidance area 213 is used for avoiding the pipe cap 150, and the pressure welding part 214 is used for pressing the pipe cap 150 against the pipe seat 100; that is, the relief area 213 is a groove structure, the press-welding portion 214 is disposed around the relief area 213, and when sealing is performed, the body 151 of the cap 150 can be accommodated in the relief area 213, and the press-welding portion 214 abuts against the cap 150 to press the cap 150 against the stem 100.

Referring to fig. 7, fig. 8, fig. 9, fig. 10 and fig. 11 together, fig. 8 illustrates a perspective structure of a first electrode 200 of the sealing device 20 after the placement of the laser emitter 10, fig. 9 illustrates a part explosion structure of the sealing device 20 provided in an embodiment of the present application, and fig. 10 illustrates a part explosion structure of the sealing device 20 in fig. 9 viewed along another angle; fig. 11 illustrates a front view of the seal welding device 20 according to the embodiment of the present application.

Wherein, the press-welding portion 214 includes a first welding section 215 and a second welding section 216, when the press-welding portion 214 presses the cap 150 against the stem 100, the first welding section 215 and the first supporting surface 203 are disposed opposite to each other in a first direction X, and the second welding section 216 and the second supporting surface 204 are disposed opposite to each other in a second direction Y, which intersects each other.

It will be appreciated that the seal welding device 20 is provided with a dual electrode structure, by providing the first electrode 200 with the first supporting surface 203 and the second supporting surface 204, and by intersecting the first supporting surface 203 and the second supporting surface 204 to form a carrying area 205 for carrying the stem 100, the first outer wall 112 of the stem 100 can be supported by the first supporting surface 203, and the second outer wall 122 of the stem 100 can be supported by the second supporting surface 204; moreover, by providing the avoiding region 213 for avoiding the cap 150 on the second electrode 210 and providing the pressure welding portion 214 at the edge of the avoiding region 213, the cap 150 can be pressed against the socket 100 by using the pressure welding portion 214, the first bonding portion 152 of the cap 150 can be pressed against the first inner wall 111 of the socket 100 by the first welding section 215 provided opposite TO the first supporting surface 203, the second bonding portion 153 of the cap 150 can be pressed against the second inner wall 121 of the socket 100 by the second welding section 216 provided opposite TO the second supporting surface 204, and the cap 150 and the socket 100 can be welded on different planes, so that the device can be applied TO the conventional TO automatic equipment, and the laser transmitter 10 sealed and welded on different planes of the cap 150 and the socket 100 can be packaged, thereby realizing industrial automatic production.

Further, in some embodiments, when the press-weld 214 presses the cap 150 against the stem 100, an orthographic projection of the first welding segment 215 on the first support surface 203 is located within the first support surface 203, and an orthographic projection of the second welding segment 216 on the second support surface 204 is located within the second support surface 204. That is, the area of the first welding section 215 of the press-welded portion 214 is smaller than the area of the first supporting surface 203, and the area of the second welding section 216 is smaller than the area of the second supporting surface 204. Therefore, the first welding section 215 and the second welding section 216 can be completely pressed against the pipe cap 150, current is completely led into the pipe cap 150, the pipe cap 150 and the pipe seat 100 are sealed and welded together, the first electrode 200 is not contacted due to overlarge area, and the short circuit risk in the sealing and welding process is avoided.

Referring to fig. 9 again, in some embodiments, the first direction X and the second direction Y have an angle α, the first supporting surface 203 and the second supporting surface 204 have an angle β, and the first welding segment 215 and the second welding segment 216 have an angle γ, where α=β=γ. The included angles of the two are matched with each other, so that when the press-welding portion 214 presses the cap 150 against the stem 100, the first welding section 215 and the first supporting surface 203 can be disposed opposite to each other in the first direction X, and the second welding section 216 and the second supporting surface 204 can be disposed opposite to each other in the second direction Y. That is, the first welding segment 215 and the first support surface 203 are perpendicular to the first direction X, and the second welding segment 216 and the second support surface 204 are perpendicular to the second direction Y.

Further, referring to fig. 8 and 9, in some embodiments, the press-welding portion 214 presses the cap 150 against the stem 100 along the third direction S, wherein an angle between the third direction S and the first direction X and the second direction Y is δ, and δ=α/2. Thus, when the sealing is performed, the pressure applied by the pressure welding portion 214 can be uniformly dispersed in the first direction X and the second direction Y, so that the pressure applied by the cap 150 can be uniformly dispersed on the two inner walls of the tube seat 100, and the sealing quality between the cap 150 and the tube seat 100 is improved.

Further, in some embodiments, the angle between the first direction X and the second direction Y is α, and 60-135. Because the angle α is set within this range, so that the sealing device 20 can adapt to the preferred solution of the laser transmitter 10, specifically, within this angle range, the two outer walls of the stem 100 of the laser transmitter 10 can be provided with the pins 140 and the heat dissipating device, respectively, without interfering with each other in space, wherein the first outer wall 112 can be used to provide the pins 140, and the pins 140 do not affect the corresponding space of the first outer wall 112, so that the first outer wall 112 can have sufficient space for heat dissipation. When the included angle alpha is smaller than 60 degrees, the space between the first inner wall 111 and the second inner wall 121 of the tube seat 100 is narrow, which is not beneficial to installing the laser component 130; when the included angle α > 135 °, the pins 140 disposed through the second inner wall 121 and the second outer wall 122 may affect the installation space of the heat sink on the first outer wall 112. Thus, 60.ltoreq.α.ltoreq.135℃is preferred.

As a further preference, in some embodiments, the first direction X is perpendicular to the second direction Y, that is, α=β=γ=90°, δ=45°, so that the pressure of the bonding portion 214 can be applied more stably during the sealing process, the sealing process can be performed safely and stably, the quality of the sealing process is improved, and the air tightness of the laser emitter 10 after the sealing process can be ensured.

Referring to fig. 12 and 13 together, fig. 12 illustrates a cross-sectional view of the sealing device of fig. 11 along line O-O, fig. 13 illustrates an enlarged partial view of region C of fig. 12, and in some embodiments, the first support surface 203 and/or the second support surface 204 are provided with relief grooves 206. The avoidance groove 206 may be used to avoid the pin 140 of the laser transmitter 10, where the pin 140 of the laser transmitter 10 is disposed on the socket 100, and when the socket 100 is placed in the bearing area 205, the pin 140 protruding from the second outer wall 122 can be contained in the avoidance groove 206, so that the socket 100 can be stably placed in the bearing area 205, and the sealing quality is ensured.

Referring to fig. 5 again, in some embodiments, the first electrode 200 is provided with two pick-and-place grooves 207, and the two pick-and-place grooves 207 are disposed on two sides of the carrying area 205 and are in communication with the carrying area 205. By providing the pick-and-place recess 207, it is possible to facilitate placement of the welding material such as the stem 100 to the carrying area 205 and to facilitate removal of the laser transmitter 10 from the carrying area 205 that has been completed by the seal welding. In particular, for the production equipment with manual feeding and discharging, the material taking and discharging grooves 207 on two sides provide enough space for fingers or clamps, so that the materials in the bearing area 205 can be smoothly taken.

In some embodiments, the first electrode 200 is provided with a limiting portion (not shown in the drawings) for positioning the stem 100, and the limiting portion is provided on the first supporting surface 203 and/or the second supporting surface 204. Through setting up spacing portion at first holding surface 203 and/or second holding surface 204, can cooperate the location portion 180 of tube socket 100 to fix a position tube socket 100, specifically, when the location portion 180 of tube socket 100 is the recess, can set up spacing portion as boss structure, when location portion 180 is the boss, can set up spacing portion as recess structure, make spacing portion can with location portion 180 adaptation can.

Referring to fig. 1 to 11 again, in some embodiments, the first pole 201 and the first connection terminal 202 are both cylindrical, and the central axis KK' thereof extends along a third direction S, which is also the axial direction of the seal welding device 20. The second post 211 and the second connection terminal 212 are both cylindrical, and the central axis KK' thereof extends along a third direction S, which is also the axial direction of the seal welding device 20.

By providing the first electrode 200 and/or the second electrode 210 with the above-described configuration, an existing partial type automatic or semi-automatic capping machine can be adapted, so that the first electrode 200 and/or the second electrode 210 can be used as the automatic or semi-automatic capping machine electrode of these types, and the tube socket 100 and the tube cap 150 of the laser transmitter 10 can be sealed and welded, thereby realizing industrial automatic production.

In some embodiments, the process of sealing includes: the stem 100 is placed on the carrying area 205, and the cap 150 is placed on the stem 100, and the second electrode 210 is pressed against the cap 150 in the third direction S, so that the first joint 152 of the cap 150 is bonded to the first inner wall 111 of the stem 100, and the second joint 153 of the cap 150 is bonded to the second inner wall 121 of the stem 100. Then, current is supplied from the first electrode 200 and the second electrode 210, and the tips of the first welded portion 1582 of the first joint 152 and the second welded portion 1592 of the second joint 153 are discharged to generate heat and melt, thereby achieving airtight welding between the stem 100 and the cap 150.

It should be noted that, in the above embodiment, the first electrode 200 may be a unitary metal structure for powering the stem 100, and/or the second electrode 210 may be a unitary metal structure for powering the cap 150.

Referring to fig. 14 and 15 together, fig. 14 illustrates an exploded part structure of the sealing device according to other embodiments of the present application, fig. 15 illustrates a cross-sectional structure of the sealing device in fig. 14, and in some embodiments, the sealing device 20 further includes a third electrode 220; the carrying region 205 is formed at one end of the first electrode 200, and the third electrode 220 can be connected to the other end of the first electrode 200; wherein the third electrode 220 and the second electrode 210 are used for supplying electricity of different polarities, and the first electrode 200 is powered by the third electrode 220; that is, in the present embodiment, the first electrode 200 and the third electrode 220 together form an electrode structure for energizing the socket 100, and the function of the electrode structure formed is the same as that of the first electrode 200 in the previously described embodiment, and the function of the second electrode 210 is the same as that of the second electrode 210 in the previously described embodiment, and is used for energizing the cap 150.

Alternatively, in some embodiments, the avoidance region 213 is disposed at one end of the second electrode 210, and the third electrode 220 can be connected to the other end of the second electrode 210; wherein the third electrode 220 and the first electrode 200 are used for connecting different polarities of electricity, and the second electrode 210 is powered by the third electrode 220; that is, in the present embodiment, the second electrode 210 and the third electrode 220 together form an electrode structure for energizing the cap 150, and the function of the electrode structure is the same as that of the second electrode 210 in the previously described embodiment, and the first electrode 200 is the same as that of the first electrode 210 in the previously described embodiment, and is used for energizing the socket 100.

By arranging the third electrode 220, the situation that the electrode of the capping machine has larger deflection can be adapted, when in sealing welding, the first electrode 200 and the second electrode 210 are coaxially arranged, and then the third electrode 220 is powered by contacting the first electrode 200 or the second electrode 210, so that the transverse position tolerance between the electrodes can be effectively removed.

Next, the laser transmitter 10 capable of performing sealing by the sealing device 20 according to the embodiment of the present application will be described so that the structure of the sealing device 20 can be more clearly presented.

Referring to fig. 16 and 17 together, fig. 16 illustrates a perspective structure of a laser transmitter 10 according to a first embodiment of the present application, and fig. 17 illustrates an assembly structure of a stem 100 and a lead 140 of the laser transmitter 10 in fig. 16; in a first embodiment, the laser transmitter 10 generally includes a header 100, a laser assembly 130, and a plurality of leads 140.

The stem 100 includes a first inner wall 111 and a first outer wall 112 opposite in a first direction X, and a second inner wall 121 and a second outer wall 122 opposite in a second direction Y, the first direction X intersecting the second direction Y.

The laser component 130 is arranged on the first inner wall 111 and is in heat conduction connection with the first inner wall 111; a plurality of pins 140 are disposed through the second inner wall 121 and the second outer wall 122, the pins 140 being electrically connected with the laser assembly 130.

It will be appreciated that the laser transmitter 10 is constructed by positioning the header 100 with opposing first inner and outer walls 111, 112 in a first direction X and opposing second inner and outer walls 121, 122 in a second direction Y, the first and second directions X, Y intersecting. That is, the first inner wall 111, the first outer wall 112, the second inner wall 121, and the second outer wall 122 have included angles, so that the laser component 130 is disposed on the first inner wall 111, and the plurality of pins 140 are disposed through the second inner wall 121 and the second outer wall 122, so that the first outer wall 112 opposite to the first inner wall 111 is not occupied by the pins 140, thereby having a larger area for heat dissipation; further, the heat dissipation device can be closer to the laser component 130 by making the first inner wall 111 and the first outer wall 112 closer to each other, so as to improve heat dissipation performance.

It should be noted that the first direction X and the second direction Y are defined in the present application for the purpose of describing the arrangement relationship of the first inner wall 111, the first outer wall 112, the second inner wall 121, and the second outer wall 122 clearly. Thus, in the description of the present application, the arrangement of the first inner wall 111 and the first outer wall 112 opposite to each other in the first direction X means that the first inner wall 111 and the first outer wall 112 are perpendicular to the first direction X, and the first inner wall 111 and the first outer wall 112 are two surfaces of the first bearing portion 110 facing away from each other, that is, two end surfaces of the first bearing portion 110 in the first direction X in fig. 17. The arrangement of the second inner wall 121 and the second outer wall 122 opposite to each other in the second direction Y means that the second inner wall 121 and the second outer wall 122 are perpendicular to the second direction Y, and the second inner wall 121 and the second outer wall 122 are two surfaces of the second bearing portion 120 facing away from each other, that is, two end surfaces of the second bearing portion 120 in the second direction Y in fig. 17. Since the first direction X and the second direction Y are intersected, that is, the first direction X and the second direction Y have an included angle other than 0 ° or 180 °, the first inner wall 111 and the second inner wall 121 are intersected, and the first outer wall 112 and the second outer wall 122 are intersected.

It should be noted that, in some embodiments, the first inner wall 111, the first outer wall 112, the second inner wall 121, and the second outer wall 122 may not be standard planes, may be curved surfaces, and may have recesses, protrusions, and thus, in the description of the present application, a reference plane of one wall intersects, is perpendicular to, or is parallel to another wall or to one direction, and is a virtual plane for characterizing an extending tendency of one wall.

For a clearer understanding of the structure of the tube holder 100 of the present application, please refer to fig. 17 again, the plane AA 'is a reference plane of the first bearing portion 110, that is, a reference plane of the first inner wall 111 and the first outer wall 112, and the first direction X is perpendicular to the plane AA'; the plane BB 'is a reference plane of the second carrying portion 120, that is, a reference plane of the second inner wall 121 and the second outer wall 122, and the second direction Y is perpendicular to the plane BB'; the first direction X and the second direction Y intersect, that is, the plane AA 'and the plane BB' are intersected, and both have an included angle α, and typically 0 ° < α < 180 ° each represents that two planes intersect, in this embodiment of the present application, the included angle α is preferably defined as 60 ° - α -135 °, and within the included angle range, the first bearing portion 110 and the second bearing portion 120 of the header 100 may respectively bear the laser assembly 130 and the lead 140 without interfering with each other, and the first outer wall 112 of the first bearing portion 110 may have enough space for heat dissipation. When the included angle alpha is smaller than 60 degrees, the space between the first inner wall 111 and the second inner wall 121 is narrow, which is not beneficial to installing the laser component 130; when the included angle α > 135 °, the pins 140 disposed through the second inner wall 121 and the second outer wall 122 may affect the installation space of the heat sink on the first outer wall 112. Thus, 60.ltoreq.α.ltoreq.135℃is preferred.

As a further preference, the first direction X is perpendicular to the second direction Y, in which case the plane AA 'and the plane BB' are perpendicular to each other, α=90°, the first inner wall 111 and the second inner wall 121 are connected vertically, and the first outer wall 112 and the second outer wall 122 are connected vertically, so that the first bearing 110 and the second bearing 120 can be considered to be perpendicular to each other. At this time, the laser assembly 130, the pins 140 and the heat dissipation device have independent and enough installation spaces, and can not interfere with each other, so that the laser emitter 10 has reasonable space layout and good heat dissipation effect.

In some embodiments, the first bearing portion 110 and the second bearing portion 120 are both plate-shaped structures, the first bearing portion 110 extends along the second direction Y, the second bearing portion 120 extends along the first direction X, the first bearing portion 110 and the second bearing portion 120 are connected, and an included angle α is defined between the two, preferably, 60 ° is less than or equal to α is less than or equal to 135 °, for reasons consistent with the foregoing, and will not be described herein.

In some embodiments, the stem 100 is an integral bending structure, the first bearing portion 110 extends along the second direction Y, and the second bearing portion 120 is bent from the end of the first bearing portion 110 toward the first direction X, so as to form a substantially L-shaped integral bent stem 100.

In some embodiments, the header 100 may be machined or stamped from a high thermal conductivity metal material. The second bearing portion 120 is provided with a plurality of mounting holes, the mounting holes penetrate through the second inner wall 121 and the second outer wall 122, and the gold plating and insulating portion 142 on the surface of the pin 140 penetrates through the mounting holes through high temperature sintering and other processes and is fixed on the second bearing portion 120. The insulating portion 142 may be a glass insulator or a multilayer ceramic, and the insulating portion 142 is disposed in the mounting hole and sleeved on the outer periphery of the pin 140.

Further, referring to fig. 18, 19 and 20, fig. 18 illustrates a perspective structure of the laser transmitter 10 according to the second embodiment of the present application, fig. 19 illustrates a perspective structure of the cap 150 according to the second embodiment of the present application, and fig. 20 illustrates a schematic cross-sectional structure of the laser transmitter 10 in fig. 18; in the second embodiment of the present application, the laser transmitter 10 further includes a cap 150, where the cap 150 is connected to the stem 100 and encloses a receiving space 190, and the laser assembly 130 is located in the receiving space 190; the cap 150 includes a body 151, a first bonding portion 152 and a second bonding portion 153 are disposed at an edge of the body 151, the first bonding portion 152 is connected with the first inner wall 111 in a sealing manner, and the second bonding portion 153 is connected with the second inner wall 121 in a sealing manner.

Through setting up cap 150, utilize cap 150 and tube socket 100 encapsulation, form airtight inside accommodation space 190, encapsulate laser subassembly 130 in accommodation space 190, ensured laser emitter 10's gas tightness, made laser emitter 10 possess excellent performance.

Specifically, the first coupling portion 152 is attached to the first inner wall 111 of the first bearing portion 110, and the second coupling portion 153 is attached to the second inner wall 121 of the second bearing portion 120. It will be appreciated that the extending directions of the first inner wall 111 and the second inner wall 121 are intersecting, and thus the extending directions of the first coupling portion 152 and the second coupling portion 153 are also intersecting, wherein the first coupling portion 152 is disposed extending along the second direction Y, and the second coupling portion 153 is disposed extending along the first direction X.

The body 151 of the cap 150 is a sealing structure made of a metal material, and the body 151, the first coupling portion 152, and the second coupling portion 153 may be formed as an integral structure by machining or punching.

Further, in the second embodiment, the first joining portion 152 includes the first flange portion 1581 and the first welding portion 1582, the first flange portion 1581 is provided to extend along the edge of the body 151, and it is understood that the first flange portion 1581 is a portion that is expanded in structure toward the outer periphery with respect to the edge of the body 151 and has a width larger than the edge width of the body 151, so that the contact area of the first flange portion 1581 with the first inner wall 111 is larger, and the connection performance and the air tightness performance are improved. The first welded portion 1582 is provided on a surface of the first flange portion 1581 facing the first inner wall 111, and the first flange portion 1581 is hermetically connected to the first inner wall 111 by the first welded portion 1582. Before welding, the first welding part 1582 has a metal pointed structure protruding toward the first inner wall 111 along the first direction X, and when welding, a local high temperature is generated by a metal tip discharge, so that the first welding part 1582 and the nearby metal are melted, and the first inner wall 111 and the first joint 152 are welded together.

The second coupling portion 153 includes a second flange portion 1591 and a second welding portion 1592, the second flange portion 1591 extending along an edge of the body 151 and being connected end to end with the first flange portion 1581, it being understood that, similar to the first flange portion 1581, the second flange portion 1591 is structurally a portion that expands circumferentially with respect to the edge of the body 151, having a width greater than an edge width of the body 151, such that a contact area of the second flange portion 1591 with the second inner wall 121 is greater, improving connection performance and airtight performance. The second welded portion 1592 is provided on a surface of the second flange portion 1591 facing the second inner wall 121, and the second flange portion 1591 is sealingly connected to the second inner wall 121 by the second welded portion 1592. As in the first welded portion 1582, before welding, the second welded portion 1592 has a metal pointed structure protruding toward the second inner wall 121 in the second direction Y, and when welding, a local high temperature is generated by a metal tip discharge, so that the second welded portion 1592 and the metal in the vicinity are melted, and the second inner wall 121 and the second joint 153 are welded together.

Referring to fig. 19 again, further, the body 151 includes a top wall 1511, a side wall 1512, and two end walls 1513, wherein the top wall 1511 and the first inner wall 111 are respectively located at two sides of the accommodating space 190 in the first direction X, that is, the top wall 1511 and the first inner wall 111 are disposed opposite to each other in the first direction X, and the accommodating space 190 is formed therebetween. The side walls 1512 are connected to the top wall 1511, and the side walls 1512 and the second inner walls 121 are located on both sides of the accommodating space 190 in the second direction Y, respectively, with the side walls 1512 and the second inner walls 121 being disposed opposite each other in the second direction Y, with the accommodating space 190 formed therebetween. Two end walls 1513 are located at both ends of the accommodating space 190, and the top wall 1511 and the side walls 1512 are connected between the two end walls 1513.

Further, in the second embodiment, the body 151 is provided with a first opening 154, and the first opening 154 is located at a side of the laser assembly 130 away from the second inner wall 121; the cap 150 includes a first light window 155, the first light window 155 is connected to the body 151, and the first opening 154 is sealed. Through setting up first light window 155, can be used for transmitting the laser that laser subassembly 130 sent, also can be used for observing the accommodation space 190 inside of laser emitter 10, conveniently carry out high accuracy dress with external component, improve the coupling efficiency with external optical component.

Further, in the second embodiment, the body 151 is provided with a second opening 156, and the second opening 156 is located on a side of the laser assembly 130 away from the first inner wall 111; the cap 150 includes a second optical window 157, and the second optical window 157 is connected to the body 151 and covers the second opening 156. Similar to the effect of setting the first optical window 155, by setting the second optical window 157, the laser module can be used for transmitting the laser emitted by the laser assembly 130, and also can be used for observing the inside of the accommodating space 190 of the laser emitter 10, so that the laser module is convenient to be attached to an external element with high precision, and the coupling efficiency with the external optical element is improved.

In some embodiments, the light transmission directions of the first light window 155 and the second light window 157 are perpendicular to each other, that is, the first light window 155 and the second light window 157 are arranged perpendicular to each other, and in particular, the first light window 155 may be disposed on the side wall 1512 of the body 151, and the second light window 157 may be disposed on the top wall 1511 of the body 151.

It will be appreciated that in a different implementation of the second embodiment, when the laser assembly 130 emits laser light along the first direction X, it may transmit the laser light through the second optical window 157, and the first optical window 155 is then the viewing window; when the laser assembly 130 emits laser light along the second direction Y, it can transmit the laser light through the first optical window 155, and the second optical window 157 is a viewing window.

Specifically, the body 151 may be made of a metal material with a thermal expansion coefficient close to that of the glass materials of the first optical window 155 and the second optical window 157, and during processing, the first opening 154 and the second opening 156 are reserved on the body 151, the first opening 154 and the second opening 156 are respectively covered and sealed by the first optical window 155 and the second optical window 157, and the glass materials of the optical windows and the metal materials of the body 151 are combined and fixed by gold soldering or high-temperature sintering of glass solder, so that the air tightness of the positions is ensured.

Further, referring to fig. 21, 22 and 23 together, fig. 21 illustrates a perspective structure of the laser transmitter 10 according to the third embodiment of the present application, fig. 22 illustrates a front view structure of the laser transmitter 10 according to the third embodiment of the present application, and fig. 23 illustrates a cross-sectional structure of the laser transmitter 10 along line A-A in fig. 22; in the third embodiment, the laser transmitter 10 further includes a lens 160, the lens 160 is disposed at a side of the first optical window 155 away from the laser assembly 130, or the lens 160 is disposed between the first optical window 155 and the laser assembly 130; the laser assembly 130 is configured to emit laser light to the first optical window 155, and the lens 160 is configured to collect the laser light emitted by the laser assembly 130.

It will be appreciated that the lens 160 is used to shape the vertical and horizontal divergence angles of the laser light emitted by the laser assembly 130 to match the coupling of the optical components. The lens 160 may be disposed outside the accommodating space 190 or may be disposed inside the accommodating space 190 according to process suitability. That is, when the first optical window 155 is used to transmit the light emitted from the laser assembly 130, the lens 160 may be disposed at a side of the first optical window 155 away from the laser assembly 130 (outside the accommodating space 190) or may be disposed between the first optical window 155 and the laser assembly 130 (inside the accommodating space 190).

In the third embodiment, when the laser assembly 130 is used to emit laser light to the second optical window 157, the lens 160 may be disposed at a side of the second optical window 157 away from the laser assembly 130, or the lens 160 may be disposed between the second optical window 157 and the laser assembly 130. The technical effects caused by the different purposes and arrangement of the lens 160 are the same as those described above, and will not be described in detail herein.

Referring to fig. 24, fig. 24 illustrates a front view of a laser transmitter 10 according to a fourth embodiment of the present application; in the fourth embodiment, the lens 160 is disposed on the stem 100, and the lens 160 may be a small lens, and is coupled to the stem 100 to be integrally connected and fixed with the stem 100, so as to improve the stability of laser.

Of course, the lens 160 may be disposed on the cap 150 to be coupled with the cap 150, so that the stability of the laser light can be improved.

Referring again to fig. 16, in some embodiments, the laser transmitter 10 further includes a monitor chip 170, where the monitor chip 170 is disposed on the second inner wall 121; the monitor chip 170 is electrically connected to the laser assembly 130 and the leads 140. The back light of the laser assembly 130 can be monitored by the monitor chip 170.

Specifically, the laser assembly 130 may include a semiconductor laser 131 and a laser substrate 132, where the semiconductor laser 131 may be fixed to the laser substrate 132 by gold soldering, the laser substrate 132 is carried on the first inner wall 111 and fixed to the first inner wall 111 by silver paste or gold soldering, and the laser substrate 132 is connected to the pins 140 by gold solder tabs, gold wires or solder paste. The monitor chip 170 is fixed on the second inner wall 121 through silver colloid, and the electrical connection of the semiconductor laser 131, the laser substrate 132, the pins 140 and the monitor chip 170 can be realized through gold wire welding.

In some embodiments, the laser assembly 130 may be a single laser or other kind of light source, or a combination of a laser or other kind of light source and a thermoelectric cooler TEC.

In some embodiments, the number of pins 140 is not limited to three in fig. 1, and two or more pins 140 may be provided according to the actual needs of the laser assembly 130.

Further, in some embodiments, the laser transmitter 10 is further provided with a positioning portion 180 for adapting to a coaxial automated packaging apparatus. The positioning portion 180 is disposed on the stem 100 and may be a positioning groove or a positioning boss, and accordingly, the packaging apparatus may be provided with a positioning boss to be matched with the positioning groove and a positioning groove to be matched with the positioning boss, so as to position the stem 100 during automatic packaging. The number of the positioning portions 180 may be one or plural, and is not particularly limited herein.

Accordingly, the embodiments of the present application also provide a laser emission system, which includes the laser emitter 10 described above, and a heat dissipation device, where the heat dissipation device is in contact with the first outer wall 112. It will be appreciated that the laser emitting system may include all of the features and advantages of the laser emitter 10 described above, and in particular, that the heat sink may be in contact with the first outer wall 112 and may have a larger area for heat dissipation; the first inner wall 111 and the first outer wall 112 can be closer to each other by arranging the first bearing portion 110 to be thinner, so that the heat dissipating device can be closer to the laser assembly 130, and heat dissipation performance is improved.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The sealing device provided by the embodiment of the present application is described in detail above, and specific examples are applied to illustrate the principles and embodiments of the present application, and the description of the above embodiment is only used to help understand the technical solution and core ideas of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (11)

1. A sealing device (20) for sealing a stem (100) and a cap (150) of a laser transmitter (10);

the seal welding device (20) includes:

a first electrode (200), wherein the first electrode (200) comprises a first supporting surface (203) and a second supporting surface (204) which are arranged in an intersecting manner, a bearing area (205) is formed between the first supporting surface (203) and the second supporting surface (204), and the bearing area (205) is used for bearing the tube seat (100);

The second electrode (210), the second electrode (210) is provided with an avoidance area (213), the edge of the avoidance area (213) is provided with a pressure welding part (214) protruding from the avoidance area (213), the avoidance area (213) is used for avoiding the pipe cap (150), and the pressure welding part (214) is used for propping the pipe cap (150) against the pipe seat (100);

the welding part (214) comprises a first welding section (215) and a second welding section (216) which are connected in an intersecting manner, when the welding part (214) presses the pipe cap (150) against the pipe seat (100), the first welding section (215) and the first supporting surface (203) are oppositely arranged in a first direction (X), the second welding section (216) and the second supporting surface (204) are oppositely arranged in a second direction (Y), the first direction (X) is a direction perpendicular to the first supporting surface (203), the second direction (Y) is a direction perpendicular to the second supporting surface (204), and the first direction (X) and the second direction (Y) are intersected.

2. The seal welding device (20) of claim 1, wherein the first direction (X) and the second direction (Y) have an angle α, the first support surface (203) and the second support surface (204) have an angle β, and the first welding segment (215) and the second welding segment (216) have an angle γ, wherein α = β = γ.

3. The seal welding device (20) of claim 2, wherein the bonding portion (214) presses the cap (150) against the stem (100) along a third direction (S), the third direction (S) being an axial direction of the seal welding device (20), an angle between the third direction (S) and the first direction (X) and the second direction (Y) being δ, and δ = α/2.

4. A sealing device (20) according to any one of claims 1 to 3, wherein the first direction (X) is perpendicular to the second direction (Y).

5. The soldering device (20) according to claim 1, wherein the first support surface (203) and/or the second support surface (204) are provided with a relief groove (206), the relief groove (206) being used for relieving pins (140) of the laser transmitter (10).

6. The seal welding device (20) of claim 1, wherein the seal welding device (20) further comprises a third electrode (220);

the bearing area (205) is formed at one end of the first electrode (200), and the third electrode (220) can be connected to the other end of the first electrode (200); wherein the third electrode (220) and the second electrode (210) are used for supplying electricity with different polarities, and the first electrode (200) is powered by the third electrode (220);

Or alternatively, the process may be performed,

the avoidance region (213) is disposed at one end of the second electrode (210), and the third electrode (220) can be connected to the other end of the second electrode (210); wherein the third electrode (220) and the first electrode (200) are used for connecting different polarities of electricity, and the second electrode (210) is powered by the third electrode (220).

7. The seal welding device (20) of claim 1, wherein an orthographic projection of the first welding segment (215) on the first support surface (203) is located within the first support surface (203) and an orthographic projection of the second welding segment (216) on the second support surface (204) is located within the second support surface (204) when the press-welding portion (214) presses the cap (150) against the stem (100).

8. The seal welding device (20) according to claim 1, wherein the first electrode (200) is provided with two pick-and-place grooves (207), and the two pick-and-place grooves (207) are disposed on both sides of the carrying area (205) and are communicated with the carrying area (205).

9. The seal welding device (20) according to claim 1, characterized in that the first electrode (200) is provided with a limit portion for positioning the stem (100), the limit portion being provided to the first support surface (203) and/or the second support surface (204).

10. The seal welding device (20) of claim 1, wherein the first electrode (200) is a unitary metallic structure and/or the second electrode (210) is a unitary metallic structure.

11. The seal welding device (20) of claim 1, wherein the first electrode (200) comprises:

a first pole (201);

a first connection terminal (202), wherein the first connection terminal (202) is arranged at one end of the first pole (201) and is used for energizing the first pole (201), and the bearing area (205) is formed at the other end of the first pole (201);

and/or the number of the groups of groups,

the second electrode (210) includes:

a second post (211);

the second connecting terminal (212), second connecting terminal (212) set up in the one end of second post (211) is used for to second post (211) circular telegram, dodge regional (213) set up in the other end of second post (211).

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