A cylindrical quartz crystal resonator

Abstract

The application relates to the technical field of quartz crystal resonators, in particular to a columnar quartz crystal resonator which comprises a shell component and a resonance assembly, the shell component comprises a shell and a base cap on the bottom of the shell, the resonance assembly comprises a quartz wafer in the shell and two groups of lead wires penetrating through the base and connected with the quartz wafer, a ring-shaped mounting groove is arranged in the base, an exhaust hole is arranged in the top of the base and communicates with the mounting groove, an air extraction hole is arranged in the bottom of the base and communicates with the mounting groove, a one-way exhaust assembly is arranged in the ring-shaped mounting groove so that air can only be discharged in the direction from the exhaust hole to the air extraction hole; a sealing rubber ring is fixedly arranged at the bottom of the shell and abuts against the outer periphery of the base; the ring-shaped mounting groove and the outer periphery of the sealing rubber ring are filled with sealing glue. The application can improve the sealing stability of the shell component by using a double sealing mode, thereby prolonging the service life of the columnar quartz crystal resonator.

Description

Technical Field

[0001] This application relates to the field of quartz crystal resonator technology, and in particular to a columnar quartz crystal resonator. Background Technology

[0002] Quartz crystal resonators are resonant devices made using the inverse piezoelectric effect of quartz crystals. They are characterized by high precision and high stability and are widely used in various devices, instruments and electronic products that require frequency stabilization / selection. They have become an important electronic component in the digital information society.

[0003] A columnar quartz crystal resonator, also known as a tuning fork crystal, is a crystal oscillator whose quartz crystal wafer resembles a tuning fork. Its applications include watches and watch movements, mobile phones, tablets, microcomputers, calculators, home appliance automatic control, and industrial automatic control.

[0004] To improve the stability and reliability of existing columnar quartz crystal resonators, it is necessary to use vacuum equipment to evacuate / fill the outer casing with nitrogen, and then seal the outer casing with glue to enable the quartz crystal to work stably and reliably in a vacuum / nitrogen environment.

[0005] However, after the glue hardens, problems such as breakage / delamination are prone to occur, resulting in instability and poor performance when using glue as the sealing method alone, which seriously affects the service life of columnar quartz crystal resonators; therefore, further improvements can be made. Summary of the Invention

[0006] In order to improve the sealing stability of the housing components and extend the service life of the columnar quartz crystal resonator, this application provides a columnar quartz crystal resonator.

[0007] The above-mentioned objective of this application is achieved through the following technical solution:

[0008] A columnar quartz crystal resonator includes a housing component and a resonant assembly. The housing component includes a shell and a base covering the bottom of the shell. The resonant assembly includes a quartz crystal located inside the shell and two sets of leads penetrating the base and connected to the quartz crystal. The base has an annular mounting groove inside, an exhaust hole communicating with the mounting groove at the top of the base, and an extraction hole communicating with the mounting groove at the bottom of the base. A one-way exhaust component is installed in the annular mounting groove so that air can only be discharged along the direction from the exhaust hole to the extraction hole. A sealing ring is fixedly provided at the bottom of the shell, and the inner circumference of the sealing ring abuts against the outer circumference of the base. The area of ​​the annular mounting groove facing the extraction hole and the area around the sealing ring are filled with sealant.

[0009] By adopting the above technical solution, during the vacuuming process, the air pressure inside the outer shell component decreases, causing the shell and base to exert a force and tendency to move closer to each other. This results in the shell and base squeezing and deforming the sealing ring, making the sealant more tightly pressed against the outer periphery of the base, thus enhancing the sealing performance between the shell and the base. After the vacuuming is completed, sealant is filled in the area of ​​the one-way exhaust component facing the air extraction hole and the outer periphery of the sealing ring. The sealant is used to enhance the sealing performance of the one-way exhaust component and the sealing ring, thereby improving the connection sealing performance of the corresponding areas. This double sealing method improves the sealing stability of the outer shell component, thereby increasing the service life of the columnar quartz crystal resonator.

[0010] Optionally, the base includes a connecting block embedded in the bottom of the housing and a cover plate covering the bottom of the housing; wherein, the annular mounting groove is formed on the side of the connecting block away from the housing, the inner circumference of the sealing ring abuts against the outer circumference of the connecting block, the cover plate has a connecting groove on the side facing the housing, and one end of the connecting block is embedded in the connecting groove.

[0011] By adopting the above technical solution, the outer diameter of the connecting block matches the inner diameter of the bottom of the housing, so that the connecting block can be embedded in the bottom of the housing, and the inner circumference of the sealing ring can abut against the outer circumference of the connecting block; the outer diameter of the cover plate matches the outer diameter of the bottom of the housing, so that the cover plate can cover the bottom of the housing, and the housing and the base can squeeze the sealing ring.

[0012] Optionally, the connecting block includes a coaxially arranged annular portion and a frustum portion; wherein, the inner circumference of the sealing ring abuts against the outer circumference of the annular portion, a plurality of connecting screws are fixedly provided on the top of the annular portion, the frustum portion has a connecting countersunk hole adapted to be inserted into the connecting screws, and the connecting screws are connected to a connecting nut that abuts against the top of the frustum portion, so that an annular mounting groove is formed between the annular portion and the frustum portion, and an inclined annular mounting hole is formed between the annular portion and the frustum portion.

[0013] By adopting the above technical solution, and when the connecting screw is fully inserted into the connecting countersunk hole and connected to the connecting nut, there is an inclined gap between the annular part and the frustum part, that is, an inclined annular mounting hole is formed between the annular part and the frustum part, and the annular mounting hole is connected to the annular mounting groove.

[0014] Optionally, the one-way venting assembly includes an outer annular sealing film and an inner annular sealing film. One end of the outer annular sealing film is embedded in an annular mounting hole, and the other end extends obliquely toward the cover plate to an annular mounting groove. The outer annular sealing film has a clearance hole adapted to the connecting screw. One end of the inner annular sealing film is fixed to the frustum portion, and the other end extends obliquely toward the cover plate to abut against the outer annular sealing film.

[0015] By adopting the above technical solution, when the vacuuming equipment in the prior art is connected to the air extraction port, so that the air inside the shell is discharged from the exhaust port to the air extraction port, the flowing gas can squeeze the inner and outer annular sealing films apart from the exhaust port to the air extraction port, thereby achieving vacuuming; when the vacuuming process is completed and the vacuuming equipment is disconnected from the air extraction port, there is a pressure difference between the exhaust port and the air extraction port. The bottom ends of the inner and outer annular sealing films are pressed together under the action of the pressure difference, thereby realizing the function of the one-way exhaust assembly so that air can only be discharged from the exhaust port to the air extraction port.

[0016] Optionally, the outer annular sealing film and the inner annular sealing film are both fixed with toothed protrusions at one end and opposite to each other, and the toothed protrusions between the outer annular sealing film and the inner annular sealing film are interlocked and adapted to each other.

[0017] By adopting the above technical solution, the interlocking and matching toothed protrusions can improve the sealing performance between the bottom end of the outer ring sealing film and the bottom end of the inner ring sealing film, so that when the vacuum equipment is disconnected from the air extraction port, gas leakage is less likely to occur between the bottom end of the inner ring sealing film and the bottom end of the outer ring sealing film.

[0018] Optionally, an annular receiving groove is provided on the outer periphery of the annular portion at a position corresponding to the annular mounting hole, and a sealing strip adapted to the annular receiving groove is fixed at the end of the outer annular sealing film away from the inner annular sealing film.

[0019] By adopting the above technical solution, when the inner annular sealing film and the outer annular sealing film are pressed together under the action of air pressure difference, both will produce a slight deformation, so that the outer annular sealing film has a force and tendency to move outward along the annular mounting hole, thereby pressing the sealing strip located at the top of the outer annular sealing film against the inner circumference of the bottom of the housing, thereby raising the distance between the base and the housing.

[0020] Optionally, the bottom of the connecting groove is provided with a plurality of reinforcing grooves at positions corresponding to the annular mounting groove, and the plurality of reinforcing grooves are evenly distributed along the center of the annular mounting groove.

[0021] By adopting the above technical solution, when the existing glue-applying equipment is connected to the air extraction hole and the sealant is injected into the one-way exhaust assembly facing the air extraction hole area, the glue is poured into the reinforcing groove and solidifies, thereby enhancing the connection stability between the connecting block and the cover plate.

[0022] Optionally, the vent hole is fitted with a sealing plug.

[0023] By adopting the above technical solution, after the sealant has solidified, the sealant plug is embedded in the vent hole to slow down the aging rate of the sealant in the area of ​​the one-way venting component facing the vent hole.

[0024] In summary, this application includes at least the following beneficial technical effects:

[0025] 1. During the vacuuming process, the air pressure inside the outer shell component decreases, causing a force and tendency for the shell and base to move closer together. This forces the shell and base to compress and deform the sealing ring, making the sealant more tightly adhered to the outer periphery of the base, thus enhancing the seal between the shell and the base. After the vacuuming is completed, sealant is filled in the area of ​​the one-way exhaust assembly facing the air extraction hole and the outer periphery of the sealing ring. The sealant is used to enhance the sealing performance of the one-way exhaust assembly and the sealing ring, thereby improving the connection sealing of the corresponding areas. This double sealing method improves the sealing stability of the outer shell component, thereby increasing the service life of the columnar quartz crystal resonator.

[0026] 2. When the inner and outer ring-shaped sealing films are pressed together under the action of air pressure difference, both will undergo slight deformation, giving the outer ring-shaped sealing film a force and tendency to move outward along the ring-shaped mounting hole. This causes the sealing strip at the top of the outer ring-shaped sealing film to press against the inner circumference of the bottom of the housing, thereby raising the distance between the base and the housing. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0028] Figure 2 This is a cross-sectional view of an embodiment of this application before the injection of sealant.

[0029] Figure 3 This is a cross-sectional view of an embodiment of this application after the sealant has been injected.

[0030] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Base; 21. Connecting block; 211. Circular part; 212. Frustum part; 213. Connecting screw; 214. Connecting countersunk hole; 215. Connecting nut; 22. Cover plate; 221. Connecting groove; 222. Reinforcing groove; 23. Annular mounting groove; 24. Vent hole; 25. Air extraction hole; 26. Annular mounting hole; 27. Annular receiving groove; 3. Quartz wafer; 4. Lead wire; 5. One-way venting assembly; 51. Outer annular sealing film; 52. Inner annular sealing film; 53. Clearance hole; 54. Toothed protrusion; 6. Sealing ring; 7. Sealing adhesive; 8. Sealing strip; 9. Sealing plug; 100. Housing component; 200. Resonant component. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses a columnar quartz crystal resonator.

[0033] Reference Figure 1 The columnar quartz crystal resonator includes a housing component 100 and a resonant assembly 200. The housing component 100 includes a housing 1 and a base 2, and the resonant assembly 200 includes a quartz crystal 3 and two sets of leads 4. The housing 1 has a cylindrical structure and an open bottom. The base 2 is embedded and sealed at the bottom of the housing 1 to form a sealed structure. The quartz crystal 3 is located at the center inside the housing 1. The two sets of leads 4 pass through the base 2 and are connected to the quartz crystal 3, thereby forming a columnar quartz crystal resonator.

[0034] Reference Figure 2-3 In this embodiment, the base 2 has an annular mounting groove 23 inside, an exhaust hole 24 communicating with the mounting groove at the top of the base 2, and an air extraction hole 25 communicating with the mounting groove at the bottom of the base 2. A one-way exhaust assembly 5 is installed in the annular mounting groove 23, and the one-way exhaust assembly 5 allows air to be discharged only along the direction from the exhaust hole 24 to the air extraction hole 25. The area of ​​the annular mounting groove 23 facing the air extraction hole 25 of the one-way exhaust assembly 5 is filled with sealant 7, and a sealant plug 9 is embedded in the air extraction hole 25.

[0035] A sealing ring 6 is fixed to the bottom of the housing 1 by adhesive bonding. When the base 2 is embedded and sealed to the bottom of the housing 1, the inner circumference of the sealing ring 6 abuts against the outer circumference of the base 2. The outer circumference of the sealing ring 6 is also filled with sealant 7, and the sealant 7 in the outer circumference area of ​​the sealing ring 6 is connected to the housing 1 and the base 2.

[0036] Before the outer casing component 100 is installed, the two sets of leads 4 are fixed to the base 2 using existing technology, and the quartz wafer 3 is fixed to the top of the two sets of leads 4 using existing technology. When the outer casing component 100 is installed, S1, the base 2 is embedded and sealed at the bottom of the casing 1 so that the quartz wafer 3 is placed in the center of the casing 1. S2, a vacuuming device using existing technology is connected to the air extraction hole 25 so that the air inside the casing 1 is discharged from the exhaust hole 24 to the air extraction hole 25, so that the outer casing component 100 is vacuumed under the cooperation of the one-way exhaust component 5. S3, a glue applicator using existing technology is connected to the air extraction hole 25 to inject the sealant 7 into the area of ​​the one-way exhaust component 5 facing the air extraction hole 25. S4, a glue applicator using existing technology is aligned with the outer periphery of the sealing ring 6 and the sealant 7 is injected into the outer periphery area of ​​the sealing ring 6 so that the sealant 7 in the outer periphery area of ​​the sealing ring 6 is connected to the casing 1 and the base 2.

[0037] During the vacuuming process, the air pressure inside the outer shell component 100 decreases, causing the shell 1 and the base 2 to exert a force and tendency to move closer to each other. This causes the shell 1 and the base 2 to compress and deform the sealing ring 6, making the sealant more tightly pressed against the outer periphery of the base 2, thus enhancing the sealing performance between the shell 1 and the base 2. After the vacuuming is completed, sealant 7 is filled in the area of ​​the one-way exhaust component 5 facing the air extraction hole 25 and the outer periphery of the sealing ring 6. The sealant 7 is used to strengthen the sealing performance of the one-way exhaust component 5 and the sealing ring 6, thereby improving the connection sealing performance of the corresponding areas. The double sealing method improves the sealing stability of the outer shell component 100, thereby increasing the service life of the columnar quartz crystal resonator.

[0038] The specific structure of base 2, which achieves the above functions, is as follows:

[0039] The base 2 includes a connecting block 21 and a cover plate 22. The connecting block 21 and the cover plate 22 are coaxially arranged. An annular mounting groove 23 is formed on the side of the connecting block 21 away from the housing 1. The cover plate 22 has a connecting groove 221 on the side facing the housing 1, which is fitted and adapted to the connecting block 21. One end of the connecting block 21 is fitted into the connecting groove 221 by an interference fit, thereby forming the base 2. An annular mounting groove 23 for installing the one-way exhaust assembly 5 is formed inside the base 2. The outer diameter of the connecting block 21 matches the inner diameter of the bottom of the housing 1, so that the connecting block 21 can be fitted into the bottom of the housing 1, and the inner circumference of the sealing ring 6 can abut against the outer circumference of the connecting block 21. The outer diameter of the cover plate 22 matches the outer diameter of the bottom of the housing 1, so that the cover plate 22 can cover the bottom of the housing 1, and the housing 1 and the base 2 can compress the sealing ring 6.

[0040] The connection block 21 structure and the one-way exhaust assembly 5 structure that achieve the above functions are as follows:

[0041] The connecting block 21 includes an annular portion 211 and a frustum portion 212. Both the annular portion 211 and the frustum portion 212 are coaxially arranged with the cover plate 22. The frustum portion 212 resembles an inverted frustum structure, and the annular portion 211 resembles an annular structure. The annular portion 211 is fitted onto the bottom of the frustum portion 212, and the inner diameter of the annular portion 211 is larger than the outer diameter of the bottom of the frustum portion 212, forming an annular mounting groove 23 between the annular portion 211 and the bottom of the frustum portion 212. A plurality of connecting screws 213 are fixedly mounted on the top of the annular portion 211, evenly distributed along its axis. Each connecting screw 213 includes a vertically fixed portion... The ring portion 211 has a round rod portion at the top and a screw portion vertically fixed to the top of the round rod portion. The frustum portion 212 has a countersunk hole 214 that is adapted to be inserted into the connecting screw 213. The connecting screw 213 is connected to a connecting nut 215 that abuts against the top of the frustum portion 212. When the connecting screw 213 is fully inserted into the countersunk hole 214 and connected to the connecting nut 215, there is an inclined gap between the ring portion 211 and the frustum portion 212, that is, an inclined annular mounting hole 26 is formed between the ring portion 211 and the frustum portion 212, and the annular mounting hole 26 is connected to the annular mounting groove 23. At this time, the ring portion 211 is embedded in the connecting groove 221 by interference fit to realize the connection between the connecting block 21 and the cover plate 22. At this time, the inner circumference of the sealing ring 6 abuts against the outer circumference of the ring portion 211.

[0042] A one-way venting assembly 5 includes an outer annular sealing film 51 and an inner annular sealing film 52. Both the outer and inner annular sealing films 51 and 52 are circular with a sheet-like cross-section. The top of the outer annular sealing film 51 is embedded in an annular mounting hole 26. Since the connecting screw 213 is also located within the annular mounting hole 26, the top of the outer annular sealing film 51 has a clearance hole 53 adapted to the connecting screw 213, ensuring that the outer annular sealing film 51 has a certain clearance within the annular mounting hole 26. The outer annular sealing film 51 extends at an angle towards the cover plate 22 to the center of the annular mounting groove 23, with its bottom end fixed to the frustum portion 212. The bottom end of the inner annular sealing film 52 extends at an angle towards the cover plate 22 to the center of the annular mounting groove 23, and the bottom end of the inner annular sealing film 52 abuts against the bottom end of the outer annular sealing film 51. That is, the inner annular sealing film 52 and the outer annular sealing film 51 together form a one-way exhaust assembly 5 with a structure similar to an inverted "V" shape.

[0043] When the vacuuming device in the prior art is connected to the air extraction port 25, so that the air inside the housing 1 is discharged from the exhaust port 24 to the air extraction port 25, the flowing gas can squeeze the inner annular sealing film 52 and the outer annular sealing film 51 apart from the exhaust port 24 to the air extraction port 25, thereby achieving vacuuming. When the vacuuming process is completed and the vacuuming device is disconnected from the air extraction port 25, there is a pressure difference between the exhaust port 24 and the air extraction port 25. The bottom ends of the inner annular sealing film 52 and the bottom ends of the outer annular sealing film 51 are pressed together under the action of the pressure difference, thereby realizing the function of the one-way exhaust assembly 5 so that air can only be discharged along the direction from the exhaust port 24 to the air extraction port 25.

[0044] In this embodiment, toothed protrusions 54 are fixed on one side of the bottom end of the outer annular sealing film 51 and the bottom end of the inner annular sealing film 52, and the toothed protrusions 54 between the outer annular sealing film 51 and the inner annular sealing film 52 are interlocked and adapted to each other.

[0045] The interlocking toothed protrusions 54 can improve the sealing performance between the bottom end of the outer annular sealing film 51 and the bottom end of the inner annular sealing film 52, so that when the vacuum equipment is disconnected from the air extraction port 25, gas leakage is less likely to occur between the bottom end of the inner annular sealing film 52 and the bottom end of the outer annular sealing film 51.

[0046] In this embodiment, an annular receiving groove 27 is provided on the outer periphery of the annular portion 211 at a position corresponding to the annular mounting hole 26, and a sealing strip 8 adapted to the annular receiving groove 27 is integrally formed and fixed at the end of the outer annular sealing film 51 away from the inner annular sealing film 52.

[0047] When the inner annular sealing film 52 and the outer annular sealing film 51 are pressed together under the action of air pressure difference, both will undergo slight deformation, so that the outer annular sealing film 51 has the force and tendency to move outward along the annular mounting hole 26, thereby pressing the sealing strip 8 located at the top of the outer annular sealing film 51 against the inner circumference of the bottom of the housing 1, thereby raising the distance between the base 2 and the housing 1.

[0048] In this embodiment, the bottom of the connecting groove 221 is provided with a plurality of reinforcing grooves 222 at positions corresponding to the annular mounting groove 23. The plurality of reinforcing grooves 222 are evenly distributed along the center of the annular mounting groove 23, and the cross-section of each reinforcing groove 222 is a dovetail structure.

[0049] When the existing adhesive application equipment is connected to the air extraction hole 25, and the sealant 7 is injected into the area of ​​the one-way exhaust assembly 5 facing the air extraction hole 25, the adhesive is poured into the reinforcing groove 222 and solidifies, thereby enhancing the connection stability between the connecting block 21 and the cover plate 22.

[0050] Implementation principle: Before the outer casing component 100 is installed, the two sets of leads 4 are fixed to the base 2 using existing technology, and the quartz wafer 3 is fixed to the top of the two sets of leads 4 using existing technology; during the installation of the outer casing component 100, S1, the base 2 is embedded and sealed at the bottom of the casing 1, so that the quartz wafer 3 is placed in the center position inside the casing 1; S2, a vacuum pumping device using existing technology is connected to the air extraction port 25, so that the air inside the casing 1 is discharged from the exhaust port 24 to the air extraction port 25, so that the outer casing component 100 achieves vacuuming under the cooperation of the one-way exhaust assembly 5. S3. Using existing adhesive application equipment connected to the vent 25, inject sealant 7 into the area of ​​the one-way venting assembly 5 facing the vent 25; S4. Using existing adhesive application equipment aligned with the outer periphery of the sealing ring 6, inject sealant 7 into the outer periphery area of ​​the sealing ring 6, so that the sealant 7 in the outer periphery area of ​​the sealing ring 6 is connected to the housing 1 and the base 2; S5. After the sealant 7 has solidified, insert the sealant plug 9 into the vent 25 to slow down the aging rate of the sealant 7 in the area of ​​the one-way venting assembly 5 facing the vent 25.

[0051] The embodiments described herein are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A columnar quartz crystal resonator, comprising a housing component (100) and a resonant assembly (200), the housing component (100) comprising a housing (1) and a base (2) covering the bottom of the housing (1), the resonant assembly (200) comprising a quartz crystal (3) located inside the housing (1) and two sets of leads (4) penetrating the base (2) and connected to the quartz crystal (3), characterized in that: The base (2) has an annular mounting groove (23) inside. The top of the base (2) has an exhaust hole (24) connected to the mounting groove. The bottom of the base (2) has an exhaust hole (25) connected to the mounting groove. A one-way exhaust component (5) is installed in the annular mounting groove (23) so that air can only be discharged along the direction from the exhaust hole (24) to the exhaust hole (25). A sealing ring (6) is fixed at the bottom of the housing (1), and the inner circumference of the sealing ring (6) abuts against the outer circumference of the base (2). The area of ​​the annular mounting groove (23) facing the exhaust hole (25) and the area around the sealing ring (6) are filled with sealant (7).

2. The columnar quartz crystal resonator according to claim 1, characterized in that: The base (2) includes a connecting block (21) embedded in the bottom of the housing (1) and a cover plate (22) covering the bottom of the housing (1); wherein, the annular mounting groove (23) is opened on the side of the connecting block (21) away from the housing (1), the inner circumference of the sealing ring (6) abuts against the outer circumference of the connecting block (21), the cover plate (22) is provided with a connecting groove (221) facing the housing (1), and one end of the connecting block (21) is embedded in the connecting groove (221).

3. A columnar quartz crystal resonator according to claim 2, characterized in that: The connecting block (21) includes a coaxially arranged annular portion (211) and a frustum portion (212); wherein, the inner circumference of the sealing ring (6) abuts against the outer circumference of the annular portion (211), a plurality of connecting screws (213) are fixedly provided on the top of the annular portion (211), and the frustum portion (212) is provided with a connecting countersunk hole (214) that is adapted to be inserted into the connecting screws (213). The connecting screws (213) are connected with a connecting nut (215) that abuts against the top of the frustum portion (212), so that an annular mounting groove (23) is formed between the annular portion (211) and the frustum portion (212), and an inclined annular mounting hole (26) is formed between the annular portion (211) and the frustum portion (212).

4. A columnar quartz crystal resonator according to claim 3, characterized in that: The one-way exhaust assembly (5) includes an outer annular sealing film (51) and an inner annular sealing film (52). One end of the outer annular sealing film (51) is embedded in the annular mounting hole (26), and the other end extends obliquely toward the cover plate (22) to the annular mounting groove (23). The outer annular sealing film (51) has a clearance hole (53) adapted to the connecting screw (213). One end of the inner annular sealing film (52) is fixed to the frustum portion (212), and the other end extends obliquely toward the cover plate (22) to abut against the outer annular sealing film (51).

5. A columnar quartz crystal resonator according to claim 4, characterized in that: The outer annular sealing film (51) and the inner annular sealing film (52) are close to each other at one end and are respectively provided with toothed protrusions (54) on one side. The toothed protrusions (54) between the outer annular sealing film (51) and the inner annular sealing film (52) are interlocked and adapted to each other.

6. A columnar quartz crystal resonator according to claim 4, characterized in that: The outer periphery of the annular portion (211) is provided with an annular receiving groove (27) at a position corresponding to the annular mounting hole (26), and a sealing strip (8) adapted to the annular receiving groove (27) is fixedly provided at the end of the outer annular sealing film (51) away from the inner annular sealing film (52).

7. A columnar quartz crystal resonator according to claim 2, characterized in that: The bottom of the connecting groove (221) has multiple reinforcing grooves (222) at positions corresponding to the annular mounting groove (23), and the multiple reinforcing grooves (222) are evenly distributed along the center of the annular mounting groove (23).

8. A columnar quartz crystal resonator according to claim 1, characterized in that: The air extraction hole (25) is fitted with a sealing plug (9).

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