Anti-vibration crystal oscillator

Abstract

The utility model relates to the technical field of crystal oscillators, and discloses an anti-vibration type crystal oscillator, which comprises a crystal oscillator main body, and a quartz crystal resonator is packaged in the crystal oscillator main body to form a core component for generating stable clock signals. And the buffer shell is tightly wrapped outside the crystal oscillator main body and plays a role in directly protecting the crystal oscillator main body. According to the utility model, the buffer housing is composed of the inner elastic silica gel layer and the outer hard plastic layer, the elastic silica gel layer is tightly attached to the crystal oscillator main body and can buffer external vibration impact first, and the hard plastic layer provides a reliable protective barrier and resists collision of hard objects; the multiple layers of alternately stacked metal sheets and rubber pads of the damping base utilize the characteristics of the metal sheets and the rubber pads for cooperative damping, thereby effectively coping with strong vibration, avoiding displacement of internal elements of the crystal oscillator and loosening of connection parts, and guaranteeing accurate and stable output of clock signals. And secondly, the anti-skid bottom pad at the bottom ensures that the crystal oscillator is stably placed in a vibration environment, and accidental sliding is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of crystal vibration, more particularly to a kind of anti-vibration crystal oscillator. BACKGROUND

[0002] In the booming era of today's electronic technology, as the indispensable key basic element in electronic equipment, crystal oscillator shoulders the heavy responsibility of delivering stable clock signal for the entire circuit system, and its performance stability is directly related to whether electronic equipment can normally and efficiently run.

[0003] In the prior art, the utility model with multiple pins is disclosed in the utility model patent with publication number CN206712761U. The crystal oscillator is mainly composed of a crystal oscillator body. Two conductive connecting blocks are arranged on the side of the front and rear sides of the crystal oscillator body and are closely connected with the crystal oscillator body. At the same time, the first crystal oscillator pin and the second crystal oscillator pin are an organic whole, and are skillfully arranged on the front and rear sides of the crystal oscillator body, and are stably connected with the conductive connecting blocks. This design makes the first crystal oscillator pin and / or the second crystal oscillator pin have a unique bendable feature, which allows them to be flexibly bent until they are parallel to the bottom of the crystal oscillator body, greatly expanding the application scenarios of the crystal oscillator. In order to further optimize the performance, a first rubber sleeve is accurately fitted on the first crystal oscillator pin on the front and rear sides of the crystal oscillator body. Similarly, a second rubber sleeve is also tightly fitted on the second crystal oscillator pin on the front and rear sides of the crystal oscillator body. Through the above design, the crystal oscillator has advantages in service life.

[0004] However, the rapid progress of science and technology has prompted electronic equipment to continuously move towards precision, and its use scenarios have become increasingly complex and diverse. Especially in specific situations such as the vibration environment around vibrating machinery in industrial production and the internal electronic control system of mobile vehicles, the existing crystal oscillator structure gradually exposes obvious shortcomings in the key indicator of vibration resistance. When subjected to strong vibration, the delicate components inside the crystal oscillator are prone to displacement, and the connection parts will also loosen, which directly affects the accuracy of the clock signal. In severe cases, the crystal oscillator may be irreversibly damaged, thereby significantly shortening its service life.

[0005] Therefore, in view of the above, the existing structure and deficiencies are studied and improved, and an anti-vibration crystal oscillator is provided to achieve a more practical value. UTILITY MODEL CONTENTS

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides an anti-vibration crystal oscillator to solve the problems in the above background art.

[0007] The utility model provides the following technical scheme: an anti-vibration crystal oscillator, comprising:

[0008] A crystal body, which is internally encapsulated with a quartz crystal resonator and constitutes a core component for generating a stable clock signal;

[0009] A buffer shell, which tightly wraps outside the crystal body and directly protects the crystal body, is composed of an inner elastic silica gel layer and an outer hard plastic layer, wherein the elastic silica gel layer is in full and close contact with the surface of the crystal body for preliminary buffering of external vibration impact, and the hard plastic layer provides a reliable protective barrier for the whole body due to its high mechanical strength;

[0010] A shock-absorbing base, which is arranged at the bottom of the buffer shell and serves as a key support structure for resisting vibration, is composed of multiple layers of alternately stacked metal sheets and rubber pads, which are tightly and seamlessly connected by adhesive to ensure the synergistic shock-absorbing effect;

[0011] An anti-skid bottom pad, which is specially arranged at the bottom of the shock-absorbing base and has anti-skid lines uniformly arranged on its surface, ensures the stability of the crystal vibration.

[0012] Further, a wave-shaped metal mesh is additionally arranged between the elastic silica gel layer and the hard plastic layer, which is woven from high-strength stainless steel wire. When the buffer shell is subjected to impact force from different directions, the unique wave shape of the metal mesh can rapidly and adaptively deform, uniformly dispersing the concentrated stress to the surrounding area, greatly enhancing the overall structural toughness of the buffer shell, and building a more stable protection system for the crystal body, effectively avoiding vibration damage. Moreover, the mesh size of the metal mesh is strictly limited to the range of 0.5-1mm, which can not only fully guarantee its excellent stress dispersion effect, but also will not hinder the heat conduction to the outer layer through the heat-conducting silicone filled between the crystal body and the buffer shell, ensuring that the crystal maintains good thermal balance while resisting vibration.

[0013] Further, the thickness of the elastic silica gel layer is precisely controlled within the range of 2-5mm, which can not only ensure sufficient buffering elasticity, but also take into account the overall structural compactness. Moreover, a large number of hollow micro airbags are uniformly distributed on the elastic silica gel layer, which can provide additional buffering space when extruded and deformed by external vibration pressure, efficiently absorbing and resolving vibration energy, and further improving the anti-vibration performance of the crystal.

[0014] Further, the outer surface of the hard plastic layer is provided with a heat dissipation groove to enhance the heat dissipation performance of the crystal body during operation, ensuring the stable operation of the crystal body.

[0015] Further, the rubber pad is made of rubber material with high damping characteristics, which can quickly and effectively dissipate vibration energy in the vibration transmission process, prevent excessive vibration transmission to the crystal main body, and optimize the thickness ratio of the adjacent two layers of rubber pad and metal sheet to 1:2, so that they complement each other and optimize the overall shock absorption effect, and create a stable working environment for the crystal oscillator.

[0016] Further, the crystal main body and the buffer shell are filled with heat-conducting silicone grease with excellent heat-conducting performance, the heat generated by the crystal main body during operation is quickly conducted to the buffer shell by the high heat-conducting coefficient of the heat-conducting silicone grease, and the heat is efficiently dissipated to the external environment by the heat dissipation grooves of the hard plastic layer and the auxiliary heat dissipation of the metal wire mesh, and the reliable operation of the crystal oscillator is comprehensively ensured.

[0017] Further, the metal sheet is made of aluminum alloy material, which has the characteristics of light weight and high strength, can effectively assist the rubber pad to dissipate vibration energy, reduce the overall weight to meet the application scene requirements of light weight equipment, and can maintain structural stability in a long-term vibration environment to prevent failure due to metal fatigue.

[0018] Further, the ratio of the total height of the shock-absorbing base to the height of the crystal main body is 1:3 to 1:2, which can ensure that the shock-absorbing base has enough travel space to buffer vibration, and can avoid the instability of the overall structure center of gravity due to the high base, and ensure the stable placement and operation of the crystal oscillator in the vibration environment.

[0019] The technical effects and advantages of the utility model are as follows:

[0020] 1. In the utility model, the buffer shell is composed of an inner elastic silica gel layer and an outer hard plastic layer, the elastic silica gel layer closely adheres to the crystal main body, can buffer external vibration impact first, the hard plastic layer provides a reliable protective barrier to resist hard object collision; the shock-absorbing base is composed of multiple layers of alternating metal sheets and rubber pads, which can synergistically reduce vibration by utilizing the characteristics of the two, effectively cope with strong vibration, avoid displacement of internal components and loosening of connection parts of the crystal oscillator, and ensure accurate and stable output of the clock signal; secondly, the bottom anti-skid pad ensures stable placement of the crystal oscillator in the vibration environment and prevents accidental sliding; thirdly, compared with the crystal oscillator in the CN206712761U patent, the anti-vibration crystal oscillator focuses on the core requirement of vibration resistance, does not limit the optimization of the plug, comprehensively strengthens the protection, and significantly prolongs the service life.

[0021] 2.The utility model discloses on the optimization of buffer shell structure, the wavy metal wire screen added between the elastic silica gel layer and hard plastic layer plays a key role, is woven from high -strength stainless steel wire, and the unique wavy shape can be self -adapted different direction impact force, disperses stress, strengthens integral toughness, greatly strengthens the protection to crystal unit main body, avoids vibration damage, and the mesh design does not influence heat dissipation, cooperates the micro air bag of silica gel layer, further promotes the buffering efficiency, absorbs more vibration energy.

[0022] On the other hand, the heat dissipation groove outside the hard plastic layer greatly enhances the heat exchange efficiency, ensures that the heat generated by the crystal oscillator works is dissipated in time, and maintains stable operating temperature. In addition, the rubber pad is made of high-damping silicone rubber and is matched with a specific thickness ratio of aluminum alloy metal sheet. The two complement each other, efficiently dissipate vibration energy, and optimize the damping effect. In addition, the reasonable height ratio design of the damping base and the crystal oscillator main body not only ensures sufficient buffer stroke, but also maintains stable structure gravity center. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structure perspective view of the utility model.

[0024] Figure 2 It is a structure perspective view of the utility model.

[0025] Figure 3 It is a structure perspective view of the damping base structure of the utility model.

[0026] Figure 4 It is a structure perspective view of the metal wire screen structure of the utility model.

[0027] Figure 5 It is a structure perspective view of the micro air bag structure of the utility model.

[0028] In the drawing: 100, crystal oscillator main body; 110, buffer shell; 111, damping base; 112, elastic silica gel layer; 113, hard plastic layer; 114, metal sheet; 115, rubber pad; 116, anti-skid bottom pad; 117, anti-skid line; 118, metal wire screen; 119, micro air bag; 120, heat dissipation groove; 121, heat-conducting silicone grease. DETAILED DESCRIPTION

[0029] The technical solutions in the utility model will be described clearly and completely below in combination with the drawings in the utility model.

[0030] The utility model provides a kind of anti-vibration crystal oscillator, the assembly of each component thereof and collaborative work mode are as follows:

[0031] First, the crystal main body 100, as the core of the entire device, encapsulates a quartz crystal resonator inside, bearing the responsibility of generating a stable clock signal. In connecting external circuits, flexible printed circuit board (FPC) connection technology is adopted, which effectively addresses the challenge of device vibration on connection reliability. The specific operation steps are as follows: select a flexible printed circuit board that matches the pin specification of the crystal main body 100, and connect one end of the flexible printed circuit board to the pins of the crystal main body 100 through high-precision precision welding process. This welding process strictly follows specific process parameters, such as welding temperature control between 280℃-320℃, welding time maintained at 2-3 seconds, to ensure that the solder joints are both firm and do not cause thermal damage to the pins, and the solder joints are treated with a specially developed anti-oxidation and reinforcement treatment agent, which can withstand at least 50 thermal cycle impacts and 100g mechanical tension tests, ensuring the durability and stability of the electrical connection. The other end of the flexible printed circuit board is then connected to the circuit mainboard according to the standard interface form of the external circuit, such as using 0.5mm pitch plug-in or crimping connector, to realize the seamless connection of the crystal oscillator and the entire electronic system. At the same time, in the layout planning of the connection line, the space is fully utilized to shorten the line length as much as possible, and the line length is generally controlled between 10mm-15mm, to reduce signal transmission delay and loss, and the thickness of 0.1mm-0.2mm of the metal copper foil is used as the shielding layer, tightly wrapping the flexible printed circuit board connection line, effectively blocking the influence of external electromagnetic interference on the crystal clock signal through grounding treatment, and ensuring the stable and accurate output of the crystal clock signal to the external circuit in complex electromagnetic environment and vibration working conditions, maintaining the normal operation of the entire electronic system.

[0032] Then, the buffer shell 110 tightly wraps around the crystal main body 100, providing direct protection for the crystal main body 100. The buffer shell 110 is cleverly composed of an inner elastic silica gel layer 112 and an outer hard plastic layer 113. During assembly, the elastic silica gel layer 112 is gently attached to the surface of the crystal main body 100, ensuring full and tight contact without any gaps, so that it can play a buffering role and absorb most of the vibration energy when encountering external vibration impact. Then, the hard plastic layer 113 is wrapped outside the elastic silica gel layer 112, and the hard plastic layer 113 provides a reliable protective barrier for the entire crystal structure with its high mechanical strength, resisting possible mechanical damage such as hard object collision and extrusion from the outside.

[0033] At the bottom of the buffer shell 110 is the shock-absorbing base 111, which is the key support structure against vibration. The shock-absorbing base 111 is composed of multiple layers of alternating metal sheet 114 and rubber pad 115. In the manufacturing process, the metal sheet 114 and the rubber pad 115 are tightly bonded layer by layer in the predetermined order by using a suitable adhesive, such as an epoxy resin-based adhesive, to ensure seamless connection between each layer and to synergistically achieve excellent shock-absorbing effect.

[0034] Finally, at the bottom of the shock-absorbing base 111, an anti-slip bottom pad 116 is provided, which is integrally formed of wear-resistant rubber material and has uniform anti-slip lines 117 on the surface pressed by a mold. During installation, the anti-slip bottom pad 116 is ensured to be tightly attached to the bottom of the shock-absorbing base 111, with a bonding area not less than 85% of the area of the bottom of the shock-absorbing base 111. In this way, the crystal oscillator can be stably placed on various working planes, and even when subjected to vibration or slight external force, it will not easily displace, ensuring the stability of the crystal oscillator.

[0035] Example Two:

[0036] Example Two is an advanced version of the anti-vibration crystal oscillator, which is optimized and upgraded in many aspects based on Example One, as follows:

[0037] The basic assembly process of the crystal oscillator main body 100, the buffer shell 110, the shock-absorbing base 111, and the anti-slip bottom pad 116 in Example One is not repeated, but there are significant improvements in the detailed design and material selection of each component.

[0038] In terms of the buffer shell 110, a layer of carefully designed wave-shaped metal mesh 118 is added between the elastic silicone layer 112 and the hard plastic layer 113. The metal mesh 118 is woven from high-strength 304 stainless steel wire, and the weaving process uses twill weaving method to ensure uniform distribution of the mesh and stable structure. During assembly, the metal mesh 118 is flatly attached to the outside of the elastic silicone layer 112, so that it is tightly attached. When the buffer shell 110 encounters impact force from different directions, its wave shape can quickly and adaptively deform, uniformly dispersing the concentrated stress to the surrounding area according to the principle of mechanics, while greatly enhancing the overall structural toughness of the buffer shell 110, building a more stable protection system for the crystal oscillator main body 100, and effectively preventing vibration damage. Moreover, the mesh size of the metal mesh 118 is strictly limited to the range of 0.5-1mm, which can fully guarantee its excellent stress dispersion effect, and will not hinder the heat conduction of the heat-conducting silicone grease 121 filled between the crystal oscillator main body 100 and the buffer shell 110 to the outer layer for heat dissipation, ensuring that the crystal oscillator maintains good thermal balance while resisting vibration.

[0039] The thickness of the elastic silica gel layer 112 is precisely controlled in the range of 2-5 mm. In this thickness range, sufficient buffer elasticity can be ensured, and the overall structure compactness is also considered. In addition, a large number of hollow micro air bags 119 are uniformly distributed on the elastic silica gel layer 112. The thickness of the bag wall of the micro air bag 119 is 0.15-0.25 mm, and the micro air bag 119 is made of high-strength rubber material. When external vibration pressure is applied, the micro air bag 119 is deformed by extrusion, instantaneously providing additional buffer space, efficiently absorbing and resolving vibration energy, and further improving the anti-vibration performance of the crystal oscillator.

[0040] The outer surface of the hard plastic layer 113 is provided with a heat dissipation groove 120. During the operation of the crystal oscillator main body 100, the heat exchange efficiency with the external environment is greatly enhanced, and the heat generated during the operation of the crystal oscillator is dissipated in time, ensuring the stable operation of the crystal oscillator main body 100.

[0041] The rubber pad 115 is made of a silicon rubber material with high damping properties. Due to the unique molecular structure and physical properties of the material, the vibration energy can be quickly and effectively dissipated during vibration transmission, preventing excessive transmission of vibration to the crystal oscillator main body 100. At the same time, through optimization design, the thickness ratio of the adjacent two layers of rubber pads 115 and the metal sheet 114 is strictly controlled to be 1:2, so that they complement each other and synergistically optimize the overall shock absorption effect, creating a stable working environment for the crystal oscillator.

[0042] The crystal oscillator main body 100 and the buffer shell 110 are fully filled with heat-conducting silicone grease 121 with excellent heat-conducting performance. The heat-conducting silicone grease with a heat-conducting coefficient not less than 3.5 W / m·K is selected. The heat generated during the operation of the crystal oscillator main body 100 is rapidly conducted to the buffer shell 110 by utilizing the high heat-conducting coefficient characteristics of the heat-conducting silicone grease, and then the heat is efficiently dissipated to the external environment by the auxiliary heat dissipation effect of the heat dissipation groove 120 of the hard plastic layer 113 and the metal wire mesh 118, thereby ensuring the reliable operation of the crystal oscillator.

[0043] The metal sheet 114 is made of aluminum alloy material. This material has the characteristics of light weight and high strength, which can effectively assist the rubber pad 115 in dispersing vibration energy, reduce the overall weight to meet the requirements of light weight in some application scenarios, and maintain the structural stability in long-term vibration environment to prevent failure due to metal fatigue.

[0044] The ratio of the total height of the shock absorbing base 111 to the height of the crystal oscillator main body 100 is 1:3 to 1:2. This ratio range can ensure that the shock absorbing base 111 has sufficient travel space to buffer vibration, and can also avoid the instability of the overall structure due to the excessive height of the base, ensuring the stable placement and operation of the crystal oscillator in the vibration environment.

[0045] Through the detailed display of example one and example two, the ingenious design and practical value of the anti-vibration crystal oscillator can be clearly understood, and both the basic version and the advanced version are committed to providing solid protection for various electronic devices requiring stable clock signals, so that the electronic devices can stably operate in complex and changeable working environments.

[0046] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0047] Secondly: the utility model discloses the embodiment in the drawing, only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;

[0048] Finally: the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A vibration-resistant crystal oscillator, characterized in that: include: The crystal oscillator body (100) contains a quartz crystal resonator, which constitutes the core component for generating a stable clock signal. The buffer shell (110) tightly wraps around the crystal oscillator body (100) and provides direct protection for the crystal oscillator body (100). The buffer shell (110) is composed of an inner elastic silicone layer (112) and an outer hard plastic layer (113). The elastic silicone layer (112) is in close contact with the surface of the crystal oscillator body (100) in all directions to initially buffer external vibration and impact. The hard plastic layer (113) provides a reliable protective barrier for the whole body due to its high mechanical strength. The shock-absorbing base (111) is located at the bottom of the buffer shell (110) and serves as a key support structure to resist vibration. The shock-absorbing base (111) is composed of multiple layers of alternately stacked metal plates (114) and rubber pads (115). The metal plates (114) and rubber pads (115) are tightly and seamlessly connected by adhesive to ensure that they work together to achieve shock absorption. An anti-slip pad (116) is specially installed at the bottom of the shock-absorbing base (111), and its surface is uniformly provided with anti-slip textures (117) to ensure the stability of the crystal oscillator.

2. The vibration-resistant crystal oscillator according to claim 1, characterized in that: A corrugated metal wire mesh (118) is added between the elastic silicone layer (112) and the rigid plastic layer (113). The metal wire mesh (118) is woven from high-strength stainless steel wire, and the mesh size of the metal wire mesh (118) is in the range of 0.5-1mm.

3. The vibration-resistant crystal oscillator according to claim 1, characterized in that: The thickness of the elastic silicone layer (112) is in the range of 2-5mm, and a large number of hollow micro-airbags (119) are evenly distributed on the elastic silicone layer (112). When external vibration and pressure are applied, the micro-airbags (119) are squeezed and deformed, providing additional buffer space instantly and further improving the anti-vibration performance of the crystal oscillator.

4. The vibration-resistant crystal oscillator according to claim 1, characterized in that: The outer surface of the rigid plastic layer (113) is provided with heat dissipation grooves (120) to enhance the heat dissipation performance of the crystal oscillator body (100) during operation and ensure the stable operation of the crystal oscillator body (100).

5. The vibration-resistant crystal oscillator according to claim 1, characterized in that: The rubber pad (115) is made of rubber material with high damping characteristics, and the thickness ratio of the two adjacent rubber pads (115) to the metal sheet (114) is 1:2, so that the two complement each other and work together to optimize the overall shock absorption effect, creating a stable working environment for the crystal oscillator.

6. The vibration-resistant crystal oscillator according to claim 1, characterized in that: A thermally conductive grease (121) with excellent thermal conductivity is provided between the crystal oscillator body (100) and the buffer shell (110). The high thermal conductivity of the thermally conductive grease (121) is used to quickly conduct the heat generated by the crystal oscillator body (100) during operation to the buffer shell (110).

7. The vibration-resistant crystal oscillator according to claim 1, characterized in that: The metal sheet (114) is made of aluminum alloy, which can effectively assist the rubber pad (115) in dispersing vibration energy and maintain structural stability under long-term vibration environment, preventing failure due to metal fatigue.

8. The vibration-resistant crystal oscillator according to claim 1, characterized in that: The ratio of the total height of the damping base (111) to the height of the crystal oscillator body (100) is 1:3 to 1:

2. This ratio range can ensure that the damping base (111) has enough travel space to buffer vibration, and can also avoid the overall structure from becoming unstable due to the base being too high, thus ensuring that the crystal oscillator is placed and operated stably in a vibration environment.

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