Positioning clamp of resonator

Abstract

The utility model discloses a positioning clamp of a resonator. The positioning clamp comprises a mounting seat and a cavity which is detachably arranged on a filter in a covering mode. The mounting seat is provided with a plurality of bosses; a plurality of assembly cavities with openings are formed in the mounting seat; the ejector pins are detachably arranged in the assembly cavity, and the ejector pins are inserted into the insertion cavities of the resonators; the ejector pin is in transition fit with the assembly cavity and the insertion cavity of the resonator; a pushing part is arranged at one end of the ejector pin; and the spring is arranged in the assembly cavity. When all the resonators are welded to the cavity of the filter, the mounting base covers the cavity of the filter, all the ejector pins are inserted into the resonators respectively to prevent the resonators from shaking in the radial direction, meanwhile, the springs push the ejector pins to move in the axial direction till the resonators are pushed to abut against the mounting positions of the filter through the pushing and pressing parts, and therefore the resonators are welded to the cavity of the filter. The condition that the resonators shake in the axial direction when the two resonators are welded is prevented, and it is ensured that the resonators can be stably welded in the cavity of the filter.

Description

Technical Field

[0001] The utility model relates to the technical field of resonator processing and production, in particular to a positioning fixture for a resonator. Background Art

[0002] During the manufacturing process of some filters, it is necessary to weld resonators. Since the resonator affects the frequency response, bandwidth, stability and other performance of the filter, if the resonator is slightly misaligned, the entire filter will fail.

[0003] The existing technology is to brush tin on multiple mounting positions of the filter and use the viscosity of the solder paste to adhere each resonator to the filter for soldering. However, this solution cannot position the resonator. Therefore, during the soldering process, if the resonator shakes slightly, it will move and deviate, and cannot be accurately soldered to the mounting position of the filter cavity. Utility Model Content

[0004] In order to overcome the problem in the prior art that when the resonator is welded, the resonator shakes slightly and cannot be accurately welded to the installation position of the filter cavity, an embodiment of the present utility model provides a positioning fixture for the resonator.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A positioning fixture for a resonator, comprising:

[0007] A mounting base is detachably mounted on the cavity of the filter; a plurality of bosses are provided on the side of the mounting base facing the filter, each of which is used to press each resonator against each mounting position of the filter; and a plurality of assembly cavities are formed on the mounting base, each of which is open;

[0008] A plurality of ejector pins are provided, each of which is detachably arranged in the assembly cavity and inserted into the insertion cavity of each resonator; the ejector pin is provided with a transitional fit between the assembly cavity and the insertion cavity of the resonator; a pushing portion is provided at one end of the ejector pin;

[0009] A spring is arranged in the assembly cavity, one side of the spring abuts against the ejector, and the other side of the spring abuts against the cavity wall of the assembly cavity, and is used to push the ejector to move axially until the resonator is pushed through the pushing portion to abut against the mounting position of the filter.

[0010] As a preferred technical solution of the present invention, the mounting base is provided with a plurality of first locking holes which are respectively connected to the first fixing holes of the filter;

[0011] The positioning fixture of the resonator further includes a first locking member, which is simultaneously passed through the first locking hole and the first fixing hole to fix the mounting seat.

[0012] As a preferred technical solution of the present invention, the mounting seat is penetrated by a plurality of air holes which are all connected to the cavity of the filter.

[0013] As a preferred technical solution of the present invention, the mounting base includes a first cover plate and a second cover plate; each of the bosses is arranged on the side of the second cover plate facing the filter;

[0014] The second cover plate is detachably covered on the side of the first cover plate away from the filter; the second cover plate is formed with a plurality of assembly holes, all of which are open on both sides, and the first cover plate is formed with a plurality of cover cavities, and when each of the cover cavities is respectively connected to each of the assembly holes, the assembly cavity is formed.

[0015] As a preferred technical solution of the present invention, the cavity wall of each assembly hole is provided with an inner flange, and each ejector pin is provided with an anti-slip portion for abutting against the inner flange.

[0016] As a preferred technical solution of the present invention, the second cover plate is provided with a second fixing hole, and the first cover plate is provided with a second locking hole for correspondingly communicating with the second fixing hole;

[0017] The positioning fixture of the resonator further includes a second locking member. When the second locking member is simultaneously inserted into the second locking hole and the second fixing hole, the first cover plate is fixed.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] When welding each resonator to the cavity of the filter, the mounting seat is covered on the cavity of the filter, and each ejector pin is inserted into the resonator to prevent the resonator from shaking in the radial direction. At the same time, the ejector pin is pushed by the spring to move axially until the resonator is pushed to abut the mounting position of the filter through the pushing portion, preventing the resonator from shaking in the axial direction during welding, thereby ensuring that the resonator can be stably welded in the cavity of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural diagram of an embodiment of the present utility model.

[0022] Figure 2 It is a structural sectional view of an embodiment of the present utility model.

[0023] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0024] Figure 4 It is an exploded view of an embodiment of the present utility model.

[0025] Numbers in the figure

[0026] 1. Mounting seat; 11. Boss; 12. Assembly cavity; 13. First locking hole; 14. Ventilation hole; 15. First cover plate; 151. Cover cavity; 152. Second locking hole; 16. Second cover plate; 161. Assembly hole; 162. Inner flange; 163. Second fixing hole;

[0027] 2. Ejector pin; 21. Pushing part; 22. Anti-slip part;

[0028] 3. Spring;

[0029] 4. Filter;

[0030] 5. Resonator. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clear, this application is further described in detail below with reference to the accompanying drawings and embodiments.

[0032] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0033] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it can be directly on the other element or indirectly on the other element.

[0034] When an element is referred to as being “connected to” another element, it can be directly connected to the another element or indirectly connected to the another element.

[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0037] In the description of the present application, “plurality” means two or more, unless otherwise clearly defined.

[0038] In order to solve the technical problem in the prior art that during the welding process of the resonator 5 and the filter 4, if the resonator 5 shakes slightly, it will cause the resonator 5 to move and deviate, thereby resulting in the resonator 5 being unable to be stably welded to the filter 4, an embodiment of the present utility model provides a positioning fixture for the resonator 5.

[0039] The following describes in detail the specific structure of a positioning fixture for a resonator 5 provided by the embodiment of the present invention. Figure 1-4 As shown in FIG, the specific structure of the positioning fixture of the resonator 5 includes a mounting seat 1, a thimble 2 and a spring 3.

[0040] The mounting base 1 is detachably covered on the cavity of the filter 4; a plurality of bosses 11 are provided on the side of the mounting base 1 facing the filter 4, each of which is used to press each resonator 5 against each mounting position of the filter 4; a plurality of assembly cavities 12 are formed on the mounting base 1, each of which is open.

[0041] Specifically, if multiple resonators 5 need to be welded to multiple mounting positions of the cavity of the filter 4, the multiple resonators 5 are first placed in the multiple mounting positions of the cavity, and then the entire mounting base 1 is covered on the cavity of the filter 4 to seal the cavity of the filter 4. Since the multiple bosses 11 on the mounting base 1 correspond to each resonator 5 one by one, each resonator 5 is pressed by each boss 11 to make each resonator 5 abut against each mounting position of the filter 4. This arrangement prevents the resonator 5 from shaking violently along its axial direction when welding.

[0042] It should be noted that if it is necessary to adjust the welding position of the resonator 5 or replace the type of other resonators 5 (since different types of resonators 5 have different heights), the entire mounting base 1 can be removed from the cavity of the filter 4, and then replaced with other mounting bases 1 that can press the resonator 5 to be welded to abut against the various mounting positions of the filter 4.

[0043] according to Figure 2 and Figure 3 As shown, a plurality of ejector pins 2 are provided and each ejector pin 2 is detachably provided in the assembly cavity 12, and each ejector pin 2 is inserted into the insertion cavity of each resonator 5; the ejector pin 2 is transitionally matched with the assembly cavity 12 and the insertion cavity of the resonator 5; a pushing portion 21 is provided at one end of the ejector pin.

[0044] Specifically, in order to prevent the resonator 5 from shaking in its radial direction during the welding process, after the mounting seat 1 is covered on the cavity of the filter 4, since the ejector pins 2 respectively assembled in each assembly cavity 12 correspond to each resonator 5 one by one, when the mounting seat 1 is covered on the cavity of the filter 4, each ejector pin 2 is inserted into each resonator 5 respectively. Since the ejector pin 2 is transitionally matched with the assembly cavity 12 and the insertion cavity of the resonator 5, it can be ensured that each resonator 5 cannot shake in its radial direction during welding, thereby ensuring the stability of each resonator 5 during welding.

[0045] It should be noted that the ejector pin 2 can be removed from the assembly cavity 12 , and then the ejector pin 2 that can adapt to the insertion cavity of the resonator 5 can be respectively assembled in each assembly cavity 12 .

[0046] It can be understood that the pushing portion 21 in the embodiment of the present invention is the bottom surface of the end of the ejector pin 2 .

[0047] according to Figure 2 and Figure 3 As shown, the spring 3 is arranged in the assembly cavity 12, one side of the spring 3 abuts against the ejector 2, and the other side of the spring 3 abuts against the cavity wall of the assembly cavity 12, which is used to push the ejector 2 to move axially until the resonator 5 is pushed to the mounting position thereof and abuts against the filter 4 through the pushing portion 21.

[0048] Specifically, in order to further improve the stability of the resonator 5 during welding, when each ejector pin 2 is respectively inserted into the insertion cavity of each resonator 5, the driving force generated by the spring 3 when it is deformed is used to push the entire ejector pin 2 to move along its axial direction, thereby driving the pushing portion 21 to follow and move until it abuts against the bottom of the insertion cavity of the resonator 5. Under the push of the pushing portion 21, the entire resonator 5 is tightly abutted against the installation position of the filter 4, avoiding a gap between the resonator 5 and the filter 4. At this time, it is ensured that the resonator 5 will not be displaced or moved during the welding process.

[0049] It should be noted that when the spring 3 pushes the ejector pin 2 to move axially until the pushing portion 21 abuts against the bottom of the insertion cavity of the resonator 5, the spring 3 has the characteristic of elastic deformation, which can prevent the ejector pin 2 from being inserted into the resonator 5 with too much force, which may easily cause damage to the insertion cavity of the resonator 5.

[0050] To sum up, when each resonator 5 is welded to the cavity of the filter 4, the mounting seat 1 is covered on the cavity of the filter 4, and each ejector pin 2 is inserted into the resonator 5 respectively to prevent the resonator 5 from shaking in the radial direction. At the same time, the spring 3 pushes the ejector pin 2 to move axially until the resonator 5 is pushed to abut the mounting position of the filter 4 through the pushing portion 21, preventing the resonator 5 from shaking in the axial direction during welding, thereby ensuring that the resonator 5 can be stably welded in the cavity of the filter 4.

[0051] according to Figure 4 As shown, in some specific embodiments, the mounting base 1 is penetrated by a plurality of first locking holes 13 respectively connected to the first fixing holes of the filter 4; the positioning fixture of the resonator 5 also includes a first locking member, which is simultaneously provided in the first locking hole 13 and the first fixing hole to fix the mounting base 1.

[0052] Specifically, in order to improve the convenience of the mounting base 1 during the disassembly and assembly process; therefore, when the mounting base 1 is disassembled and removed from the filter 4, it is only necessary to disengage the first locking piece from the first locking hole 13 and the first fixing hole, and then the mounting base 1 can be removed; conversely, when assembling the mounting base 1, it is only necessary to assemble the mounting base 1 in the cavity of the filter 4, so that the first locking holes 13 of the mounting base 1 are respectively connected to the first fixing holes of the filter 4, and then, the first locking pieces are respectively inserted into the first locking hole 13 and the first fixing hole at the same time, so as to fix the mounting base 1 to the cavity of the filter 4.

[0053] It can be understood that the first locking member of the embodiment of the present invention is a screw, a bolt, a screw rod, etc., and the specific type is not limited; the first locking hole 13 and the first fixing hole are both threaded holes. When the bolt is threadedly connected with the first locking hole 13 and the first fixing hole, which are both threaded holes, the mounting base 1 is locked due to the close fit of the threads between the bolt and the threaded hole, and the entire bolt can be disengaged from the threaded hole by twisting the bolt, thereby improving the firmness of the mounting base 1 and the convenience of the mounting base 1 during disassembly and assembly.

[0054] according to Figure 4 As shown, in some specific embodiments, the mounting base 1 has a plurality of air holes 14 that are all connected to the cavity of the filter 4 .

[0055] Specifically, since instantaneous high-temperature gas and pressure are easily generated during the welding process, which may cause defects such as pores and cracks in the weld, a plurality of air holes 14 are provided through the mounting base 1 to allow part of the hot gas generated when welding the resonator 5 to be discharged from the cavity of the filter 4, thereby reducing the thermal stress during welding and preventing excessive heating from causing a decrease in the welding quality of the resonator 5 or welding defects, causing it to deform.

[0056] according to Figure 2 and Figure 3 As shown, in some specific embodiments, the mounting base 1 includes a first cover plate 15 and a second cover plate 16; each boss 11 is arranged on the side of the second cover plate 16 facing the filter 4; the second cover plate 16 is detachably covered on the side of the first cover plate 15 away from the filter 4; the second cover plate 16 is formed with a plurality of assembly holes 161, which are all open on both sides, and the cover plate is formed with a plurality of cover cavities 151, and when each cover cavity 151 is respectively connected with each assembly hole 161, an assembly cavity 12 is formed.

[0057] Specifically, in order to improve the convenience of disassembly and assembly of the ejector pin 2, when it is necessary to disassemble and remove the ejector pin 2, the first cover plate 15 is removed from the top surface of the second cover plate 16, and then the spring 3 and the ejector pin 2 are removed from the assembly cavity 12; conversely, when it is necessary to assemble another type of ejector pin 2, the replaced ejector pin 2 is inserted into the assembly hole 161. Since the assembly hole 161 is through-set, the pushing portion 21 provided on the ejector pin 2 can extend out of the assembly hole 161. Subsequently, part of the spring 3 is inserted into the assembly hole 161. When the first cover plate 15 is placed on the second cover plate 16, each cover cavity 151 is respectively connected to each assembly hole 161, thereby forming the assembly cavity 12. The multiple cover cavities 151 formed on the first cover plate 15 are used to push each spring 3 respectively. This arrangement makes it easy to replace different types of ejector pins 2 without requiring excessive and cumbersome operations for disassembly.

[0058] according to Figure 4 As shown, in a further embodiment, the second cover plate 16 is provided with a second fixing hole 163, and the first cover plate 15 is provided with a second locking hole 152 for correspondingly communicating with the second fixing hole 163; the positioning fixture of the resonator 5 also includes a second locking member, and when the second locking member is simultaneously passed through the second locking hole 152 and the second fixing hole 163, the first cover plate 15 is fixed.

[0059] Specifically, when removing the first cover plate 15 from the second cover plate 16, it is only necessary to disengage the second locking piece from the second locking hole 152 and the second fixing hole 163, and then the first cover plate 15 can be detached from the second cover plate 16, and then the spring 3 and the ejector pin 2 can be removed; conversely, when assembling, it is only necessary to place the first cover plate 15 on the top surface of the second cover plate 16, so that the second locking holes 152 of the first cover plate 15 are respectively connected to the second fixing holes 163 of the second cover plate 16, and then, the second locking pieces are respectively and simultaneously inserted into the second locking holes 152 and the second fixing holes 163 to fix the first cover plate 15 on the top surface of the second cover plate 16.

[0060] It can be understood that the second locking member of the embodiment of the present invention is a screw, a bolt, a threaded rod, etc., and the specific type is not limited; the second locking hole 152 and the second fixing hole 163 are both threaded holes. By threading the bolt with the second locking hole 152 and the second fixing hole 163, which are both threaded holes, the first cover plate 15 is locked, and the entire bolt can be disengaged from the threaded hole by twisting the bolt, thereby improving the firmness of the first cover plate 15 and the convenience of separating and disassembling the first cover plate 15 and the second cover plate 16.

[0061] according to Figure 3 As shown, in some specific embodiments, the cavity wall of each assembly hole 161 is provided with an inner flange 162 , and each ejector pin 2 is provided with an anti-slip portion 22 for abutting against the inner flange 162 .

[0062] Specifically, in order to prevent the ejector pin 2 from falling off, when the ejector pin 2 moves to the point where the anti-fall-off portion 22 can abut against the inner flange 162, it is used to prevent the ejector pin 2 from continuing to move, preventing the entire ejector pin 2 from falling off outside the assembly cavity 12, and also limiting the movement of the ejector pin 2 within a specified range.

[0063] according to Figure 3 As shown, it should be further explained that the anti-slip portion 22 of each ejector pin 2 is transitionally matched with the assembly hole 161 or the cover cavity 151 to prevent the ejector pin 2 from shaking along its radial direction.

[0064] It is understandable that the anti-slip portion 22 of the embodiment of the present invention is a convex ring provided on the side wall of the ejector pin 2 or a plurality of protrusions provided along the circumference of the ejector pin 2 , and the specific type is not limited here.

[0065] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A positioning fixture for a resonator, characterized in that: The positioning fixture of the resonator comprises: A mounting base is detachably mounted on the cavity of the filter; a plurality of bosses are provided on the side of the mounting base facing the filter, each of which is used to press each resonator against each mounting position of the filter; and a plurality of assembly cavities are formed on the mounting base, each of which is open; A plurality of ejector pins are provided, each of which is detachably arranged in the assembly cavity and inserted into the insertion cavity of each resonator; the ejector pin is provided with a transitional fit between the assembly cavity and the insertion cavity of the resonator; a pushing portion is provided at one end of the ejector pin; A spring is arranged in the assembly cavity, one side of the spring abuts against the ejector, and the other side of the spring abuts against the cavity wall of the assembly cavity, and is used to push the ejector to move axially until the resonator is pushed through the pushing portion to abut against the mounting position of the filter.

2. The resonator positioning fixture according to claim 1, characterized in that: The mounting base is provided with a plurality of first locking holes which are respectively connected to the first fixing holes of the filter; The positioning fixture of the resonator further includes a first locking member, which is simultaneously passed through the first locking hole and the first fixing hole to fix the mounting seat.

3. The resonator positioning fixture according to claim 1, characterized in that: The mounting seat is penetrated by a plurality of air holes which are all connected with the cavity of the filter.

4. The resonator positioning fixture according to any one of claims 1 to 3, characterized in that: The mounting base includes a first cover plate and a second cover plate; each of the bosses is arranged on the side of the second cover plate facing the filter; The second cover plate is detachably covered on the side of the first cover plate away from the filter; the second cover plate is formed with a plurality of assembly holes, all of which are open on both sides, and the first cover plate is formed with a plurality of cover cavities, and when each of the cover cavities is respectively connected to each of the assembly holes, the assembly cavity is formed.

5. The resonator positioning fixture according to claim 4, characterized in that: The cavity wall of each assembly hole is provided with an inner flange, and each ejector pin is provided with an anti-slip portion for abutting against the inner flange.

6. The resonator positioning fixture according to claim 4, characterized in that: The second cover plate is provided with a second fixing hole, and the first cover plate is provided with a second locking hole for correspondingly communicating with the second fixing hole; The positioning fixture of the resonator further includes a second locking member. When the second locking member is simultaneously inserted into the second locking hole and the second fixing hole, the first cover plate is fixed.

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