Quartz crystal resonator with three leads

Abstract

The utility model discloses a quartz crystal resonator with three leads, which belongs to the resonator field and comprises a casing and a bottom plate, the casing is hollow inside, the bottom plate seals the opening at the bottom of the casing, a quartz wafer is fixed on the surface of the bottom plate, the quartz wafer is arranged inside the casing, contact bosses are symmetrically arranged on two sides of the quartz wafer, and the contact bosses are arranged in the casing. The surface of the shell is vertically and slidably provided with two connecting rods, the two connecting rods are arranged on the two sides of the quartz crystal respectively, the bottom of each connecting rod is provided with a main pin, the main pins penetrate through the lower surface of the bottom plate, and the positive pins and the negative pins can slide along contact bosses on the two sides of the quartz crystal so that the pins can be locked into the shell in the transportation process. According to the utility model, the extension distance is reduced so as to protect the pins, the pins can be pulled out and fixed through the fixing bolts when in use, and at the moment, the three surfaces of the contact boss are all in contact with the pins, so that the contact area is enlarged, and the smoothness of internal charges is ensured.

Description

Technical Field

[0001] This utility model relates to the field of resonators, and more specifically, to a three-lead quartz crystal resonator. Background Technology

[0002] Quartz crystal resonators are widely used components in electronic circuits, based on the piezoelectric effect and resonance phenomenon of quartz crystals. When an external electric field is applied to the electrodes of a quartz crystal, the crystal will mechanically oscillate due to the piezoelectric effect. When the frequency of the applied electric field equals the natural oscillation frequency of the quartz crystal, resonance occurs. In the resonant state, the quartz crystal has low impedance to the applied electric field and can generate a large current. Three-lead quartz crystal resonators typically have two signal leads and one ground lead. The ground lead is usually located between the two signal leads. This arrangement helps reduce electromagnetic interference and improves signal stability and noise immunity. The two signal leads are used to connect to external circuits for signal input and output, while the ground lead provides a stable reference potential for the entire device, helping to suppress common-mode interference and enabling the resonator to more accurately generate and maintain a stable frequency signal during operation.

[0003] The electrodes of existing three-lead quartz crystal resonators are fixed to the quartz crystal wafer by welding. This causes the electrode pins to extend beyond the size of the outer casing. During transportation, the longer pins are prone to impact, affecting subsequent adaptation. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a three-lead quartz crystal resonator that can realize the storage of positive and negative pins during transportation, reduce the pin extension distance, and protect the pins.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A three-lead quartz crystal resonator includes a housing and a base plate. The housing is hollow inside, and the base plate is sealed to the bottom of the housing. A quartz crystal is fixed on the surface of the base plate and placed inside the housing. Contact protrusions are symmetrically arranged on both sides of the quartz crystal. Two connecting rods are vertically slidably mounted on the surface of the housing and are respectively placed on both sides of the quartz crystal. A main pin is provided at the bottom of the connecting rod and penetrates the lower surface of the base plate.

[0009] Furthermore, the connecting rod surface is provided with a sliding groove, and the contact boss is placed inside the main pin.

[0010] Furthermore, a crossbar is horizontally fixed to the front side of the two connecting rods, the crossbar is placed on the front side of the quartz wafer, and fixing bolts are symmetrically arranged at the bottom of the crossbar.

[0011] Furthermore, the base plate has symmetrical through holes on its surface, and the fixing bolts are adapted to the internal dimensions of the through holes.

[0012] Furthermore, the bottom of the fixing bolt is provided with a clamp head, which has a conical structure that is larger at the top and smaller at the bottom, and the surface of the clamp head is provided with a notch.

[0013] Furthermore, a grounding pin is fixedly provided on the lower surface of the base plate, and the grounding pin is positioned between the two main pins.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of this utility model are as follows: This utility model provides a three-lead quartz crystal resonator. The positive and negative pins can slide along the contact bosses on both sides of the quartz crystal to lock the pins into the housing during transportation, reducing the protrusion distance and protecting the pins. When needed, the pins can be pulled out and fixed by the fixing bolts. At this time, all three sides of the contact bosses are in contact with the pins, increasing the contact area and ensuring the smooth flow of internal charge. The pulled-out pins can be easily installed in the circuit. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic cross-sectional view of the shell structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the base plate and wafer mounting structure of this utility model;

[0019] Figure 4 For the present utility model Figure 3 A magnified structural diagram of area A.

[0020] The following are the labels in the diagram: 1. Housing; 2. Base plate; 21. Quartz crystal; 211. Contact boss; 22. Through hole; 3. Ground pin; 4. Connecting rod; 41. Main pin; 42. Slide groove; 5. Crossbar; 51. Fixing bolt; 52. Clip; 53. Notch. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Example:

[0023] Please see Figures 1-4 As shown, a three-lead quartz crystal resonator includes a housing 1 and a base plate 2. The housing 1 is hollow inside, and the base plate 2 seals the bottom of the housing 1 to ensure an airtight seal inside the housing 1. Otherwise, external dust will affect the operation of the quartz crystal 21. The quartz crystal 21 is a circular disc, perpendicular to the surface of the base plate 2, and is placed inside the housing 1. Symmetrical contact bosses 211 are arranged on both sides of the quartz crystal 21. Two connecting rods 4 are vertically slidably mounted on the surface of the housing 1. The connecting rod 4 is placed on both sides of the quartz wafer 21. The bottom of the connecting rod 4 is provided with a main pin 41, which penetrates the lower surface of the base plate 2. The surface of the connecting rod 4 is provided with a groove 42. The contact boss 211 is placed inside the main pin 41. The connecting rod 4 can only slide vertically along the groove 42 to maintain contact with the quartz wafer 21. When the main pin 41 is fully pulled out, the contact boss 211 is placed inside the groove 42. At this time, the three sides of the contact boss 211 are squeezed out from the connecting rod 4 to increase the contact area and ensure smooth current flow.

[0024] refer to Figure 3 and Figure 4 As shown, a crossbar 5 is fixed horizontally on the front side of the two connecting rods 4. The crossbar 5 can ensure the synchronous movement of the two connecting rods 4, thereby ensuring that the two main pins 41 at the bottom are at the same height. The crossbar 5 is placed on the front side of the quartz crystal 21, and fixing bolts 51 are symmetrically arranged at the bottom of the crossbar 5.

[0025] The base plate 2 has symmetrical through holes 22 on its surface. The fixing bolt 51 is adapted to the internal size of the through hole 22. When the main pin 41 is fully pulled out, the fixing bolt 51 passes through the through hole 22 to fix the crossbar 5, and then fixes the connecting rods 4 on both sides to keep them fixed to the quartz crystal 21.

[0026] refer to Figure 3 and Figure 4 As shown, the bottom of the fixing bolt 51 is provided with a clamp head 52. The clamp head 52 has a conical structure that is larger at the top and smaller at the bottom. The surface of the clamp head 52 is provided with a notch 53 so that the clamp head 52 can be deformed when it moves down. When it is installed in place, the clamp head 52 springs outward to stabilize the fixing bolt 51.

[0027] After being fully extended, the main pin 41 can also be bent outwards to adapt to different installation environments. In this case, the bent main pin 41 can further limit the stability of the connecting rod 4.

[0028] refer to Figure 1 and Figure 2 As shown, a ground pin 3 is fixedly installed on the lower surface of the base plate 2. The ground pin 3 is placed between the two main pins 41 to provide a stable reference potential for the entire device and improve the stability of the resonator during operation.

[0029] Working principle: The base plate 2 and the housing 1 are fixedly connected to protect the internal parts. During transportation, the two main pins 41 can be retracted into the housing 1 to reduce protection. At this time, the connecting rod 4 moves upward as a whole, which drives the crossbar 5 to move upward as a whole. Since the contact boss 211 is placed inside the slide groove 42, the connecting rod 4 is stable when it is vertical. When it is needed, the main pin 41 can be pulled down to drive the connecting rod 4 and the crossbar 5 to move down. When it moves down to the maximum distance, the fixing bolt 51 will be inserted and penetrate the through hole 22. Due to the presence of the notch 53, the clamp 52 is squeezed and deformed during the insertion process. After moving down to the position, the clamp 52 returns to its original position to limit the crossbar 5. The crossbar 5 can ensure the fixed position of the two connecting rods 4. At this time, the contact boss 211 is placed inside the slide groove 42. The top and side surfaces of the contact boss 211 increase the contact area with the connecting rod 4 to ensure smooth current flow. At the same time, the fixing of the main pin 41 after being pulled out can facilitate the overall fixing of the resonator.

[0030] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A three-lead quartz crystal resonator, comprising a housing (1) and a base plate (2), characterized in that: The housing (1) is hollow inside. The bottom plate (2) seals the bottom of the housing (1). A quartz wafer (21) is fixed on the surface of the bottom plate (2). The quartz wafer (21) is placed inside the housing (1). Contact bosses (211) are symmetrically arranged on both sides of the quartz wafer (21). Two connecting rods (4) are vertically slidably installed on the surface of the housing (1). The two connecting rods (4) are respectively placed on both sides of the quartz wafer (21). A main pin (41) is provided at the bottom of the connecting rod (4). The main pin (41) penetrates the lower surface of the bottom plate (2).

2. A three-lead quartz crystal resonator according to claim 1, characterized in that: The connecting rod (4) has a groove (42) on its surface, and the contact boss (211) is placed inside the main pin (41).

3. A three-lead quartz crystal resonator according to claim 2, characterized in that: A crossbar (5) is fixed laterally on the front side of the two connecting rods (4). The crossbar (5) is placed on the front side of the quartz wafer (21). Fixing bolts (51) are symmetrically arranged at the bottom of the crossbar (5).

4. A three-lead quartz crystal resonator according to claim 3, characterized in that: The base plate (2) has symmetrical through holes (22) on its surface, and the fixing bolt (51) is adapted to the internal size of the through hole (22).

5. A three-lead quartz crystal resonator according to claim 4, characterized in that: The bottom of the fixing bolt (51) is provided with a clamp (52), which has a tapered structure that is larger at the top and smaller at the bottom, and a notch (53) is provided on the surface of the clamp (52).

6. A three-lead quartz crystal resonator according to claim 1, characterized in that: The bottom plate (2) is fixedly provided with a ground wire pin (3), which is placed between the two main pins (41).

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