Signal grounding bolt and sealed piezoelectric ceramic controller case

Abstract

The utility model discloses a sealed piezoelectric ceramic controller case, and relates to the technical field of electronics. In order to solve the technical problems that in the prior art, in an existing piezoelectric controller case installation mode, holes cannot be formed, signal shielding performance is poor, and signal deviation is caused, the technical scheme provided by the utility model is that the sealed piezoelectric ceramic controller case comprises a main case body with an opening in one face, and the main case body is provided with an opening in the other face; the housing is used for accommodating piezoelectric ceramic electrical components; the front panel is used for sealing the opening of the main box body, and a sealed space is formed by the front panel and the front panel; the front panel is provided with through holes which are used for sleeving a box grounding bolt and a signal grounding bolt. And the case grounding bolt and the signal grounding bolt are both connected with the front panel in a sealing manner. The method can be applied to manufacturing and design work of the piezoelectric ceramic controller case, especially in special use environments where the sealing performance of the case needs to be guaranteed, such as salt spray test and electromagnetic interference environments.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronics, and in particular to a sealed piezoelectric ceramic controller. BACKGROUND

[0002] Traditional piezoelectric controller cabinets are usually installed in a split manner, that is, the entire cabinet is assembled from multiple cabinet bodies, and then connected into a whole through screws. Grounding is a key factor to ensure the normal operation of the piezoelectric controller. There are usually two grounding methods: the first method is to connect the signal ground to the external grounding system through a through hole on the cabinet, and then separately ground the cabinet; the second method is to directly connect the signal ground to the cabinet, and then ground the cabinet itself. These two grounding methods have their own advantages and disadvantages, but in certain use environments, especially in special environments that require salt spray testing and electromagnetic interference, the traditional cabinet design faces certain challenges.

[0003] In some special environments, such as salt spray environments, the cabinet is required to have good sealing performance. The first grounding method requires a through hole to be formed on the cabinet to allow the signal ground to pass through the through hole and be connected out, which may cause the sealing performance of the cabinet to decrease and be unable to effectively prevent smoke from invading, thereby affecting the reliability of the internal electronic components. At the same time, this grounding method may also cause the cabinet ground and the signal ground to be separated, resulting in poor signal ground shielding effect and affecting the stability and signal accuracy of the controller.

[0004] The second grounding method, although it can directly connect the signal ground to the cabinet, thereby simplifying the grounding structure, may result in a signal ground shielding effect of the cabinet that is not as good as the first method. This may cause electromagnetic interference, which in turn may cause signal deviation, and negatively affect the performance of the piezoelectric controller. In environments with strong electromagnetic interference, good signal shielding performance is crucial to ensure the normal operation of the device, and the second grounding method may not meet this requirement.

[0005] In summary, the traditional piezoelectric controller cabinet has significant problems in terms of sealing and electromagnetic shielding in special environments, which need to be solved to improve the reliability and stability of the device in harsh environments. SUMMARY

[0006] To solve the technical problems of the existing piezoelectric controller cabinet installation method, such as the inability to drill holes and the resulting poor signal shielding and signal deviation, the present application provides the following technical solution:

[0007] The signal grounding bolt comprises:

[0008] A screw, a coil locking nut and a nut threadedly engaged with the screw at both ends of the screw;

[0009] An inner terminal coil and an outer terminal coil are arranged between the lock nut and the screw cap, the inner terminal coil is close to the coil lock nut;

[0010] An inner insulation pad and an outer insulation pad are arranged between the inner terminal coil and the outer terminal coil, the inner insulation pad is close to the inner terminal coil.

[0011] Further, a preferred embodiment is provided, further comprising:

[0012] An insulation pad lock nut is arranged between the inner terminal coil and the inner insulation pad.

[0013] Further, a preferred embodiment is provided, further comprising:

[0014] A spring pad is arranged between the coil lock nut and the inner terminal coil.

[0015] Further, a preferred embodiment is provided, further comprising:

[0016] A flat pad is arranged between the spring pad and the coil lock nut.

[0017] Further, a preferred embodiment is provided, further comprising:

[0018] A flat pad is arranged between the insulation pad lock nut and the inner insulation pad.

[0019] Further, a preferred embodiment is provided, the screw is a brass screw.

[0020] Based on the same utility model concept, the utility model also provides a sealed piezoelectric ceramic controller case, the case comprises:

[0021] A main box body with one open side is used for accommodating piezoelectric ceramic electric appliance elements;

[0022] A front panel is used for closing the opening of the main box body, and a sealed space is formed with the front panel;

[0023] The front panel is provided with a through hole, which is used for sleeving a case grounding bolt and the signal grounding bolt;

[0024] The case grounding bolt and the signal grounding bolt are in sealed connection with the front panel.

[0025] Further, a preferred embodiment is provided, the front panel and the main box body are provided with sealing strips at the contact position, and all the sealing strips are arranged around the contact position of the main box body and the front panel.

[0026] Further, a preferred embodiment is provided, the inner insulation pad is arranged inside the main box body, and the outer insulation pad is arranged outside the main box body.

[0027] The inner insulation pad is fastened to the inner wall of the front panel by an insulation pad locking nut, and the outer insulation pad is fastened to the outer wall of the front panel by the screw nut.

[0028] Further, a preferred embodiment is provided, wherein a boss is arranged on the front panel for extruding the outer insulation pad in a direction perpendicular to the front panel.

[0029] Compared with the prior art, the technical scheme provided by the utility model has the advantages of:

[0030] The sealing piezoelectric ceramic controller case provided by the utility model adopts the mode of auxiliary sealing by sealing strips, guarantees the sealing performance of the case, and enables the case to pass the salt spray test and electromagnetic interference. This mode can effectively prevent the smoke and electromagnetic interference from the outside from affecting the equipment inside the case.

[0031] The sealing piezoelectric ceramic controller case provided by the utility model realizes signal grounding and case grounding by respectively arranging a signal grounding end and a case grounding end on the front panel of the case. This mode can guarantee that the signal grounding of the equipment has good lapping grounding performance and avoids the occurrence of signal deviation.

[0032] Compared with the prior art, the sealing piezoelectric ceramic controller case provided by the utility model,

[0033] The sealing piezoelectric ceramic controller case provided by the utility model adopts the mode of auxiliary sealing by sealing strips, can effectively guarantee the sealing performance of the case, and enables the case to pass the salt spray test and electromagnetic interference. Meanwhile, by respectively realizing signal grounding and case grounding, the signal grounding of the equipment is guaranteed to have good lapping grounding performance, and the occurrence of signal deviation is avoided.

[0034] The sealing piezoelectric ceramic controller case provided by the utility model improves the reliability and stability of the case, and makes the case applicable to more special use environments.

[0035] The sealing piezoelectric ceramic controller case provided by the utility model can be applied to the manufacturing and design of piezoelectric ceramic controller cases, especially in special use environments, such as salt spray test and electromagnetic interference environments, where the sealing performance of the case needs to be guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a front view of the sealing piezoelectric ceramic controller case;

[0037] Figure 2 is Figure 1 is a sectional view along A-A of the sealing piezoelectric ceramic controller case;

[0038] Figure 3 isFigure 2 Local enlarged view at B.

[0039] Wherein, 1-main box, 2-front panel, 3-signal grounding bolt, 301-coil locking nut, 302-flat pad, 303-elastic pad, 304-inner wiring coil, 305-brass screw, 306-insulating pad locking nut, 307-inner insulating pad, 308-outer insulating pad, 309-outer wiring coil, 310-nut, 4-chassis grounding bolt, 5-sealing strip. DETAILED DESCRIPTION

[0040] In order to make the advantages and beneficial effects of the technical solutions provided by the utility model more clear, the technical solutions provided by the utility model are further described in detail in combination with the drawings, and the specific embodiments are as follows:

[0041] Embodiment one, the embodiment provides a signal grounding bolt, which comprises:

[0042] A screw, coil locking nuts and nuts matched with the screw in threads at both ends of the screw;

[0043] Inner wiring coils and outer wiring coils arranged between the locking nuts and the nuts, the inner wiring coils being close to the coil locking nuts;

[0044] Inner insulating pads and outer insulating pads arranged between the inner wiring coils and the outer wiring coils, the inner insulating pads being close to the inner wiring coils.

[0045] Embodiment two, the embodiment is a further limitation of the signal grounding bolt provided by embodiment one, and further comprises:

[0046] An insulating pad locking nut arranged between the inner wiring coils and the inner insulating pads.

[0047] Embodiment three, the embodiment is a further limitation of the signal grounding bolt provided by embodiment two, and further comprises:

[0048] An elastic pad arranged between the coil locking nuts and the inner wiring coils.

[0049] Embodiment four, the embodiment is a further limitation of the signal grounding bolt provided by embodiment three, and further comprises:

[0050] A flat pad arranged between the elastic pad and the coil locking nuts.

[0051] Embodiment five, the embodiment is a further limitation of the signal grounding bolt provided by embodiment three or four, and further comprises:

[0052] A flat pad arranged between the insulating pad locking nut and the inner insulating pad.

[0053] Embodiment six, the signal grounding bolt provided by the embodiment one is further limited, the screw is brass screw.

[0054] Embodiment seven, the sealed piezoelectric ceramic controller cabinet is provided, the cabinet comprises:

[0055] One side open main box, for containing piezoelectric ceramic electrical components;

[0056] Front panel for closing the opening of the main box, and the front panel forms a sealed space;

[0057] The front panel is provided with a through hole for sleeving the cabinet grounding bolt and the signal grounding bolt provided by the embodiment five;

[0058] The cabinet grounding bolt and the signal grounding bolt are sealedly connected with the front panel.

[0059] Embodiment eight, the sealed piezoelectric ceramic controller cabinet provided by the embodiment seven is further limited, the front panel and the main box contact are provided with sealing strips, and all the sealing strips are arranged around the main box and the front panel contact.

[0060] Embodiment nine, the sealed piezoelectric ceramic controller cabinet provided by the embodiment seven is further limited, the signal grounding bolt, the inner insulation pad is arranged inside the main box, and the outer insulation pad is arranged outside the main box;

[0061] The inner insulation pad is fastened on the inner wall of the front panel by the insulation pad locking nut, and the outer insulation pad is fastened on the outer wall of the front panel by the nut.

[0062] Embodiment ten, the sealed piezoelectric ceramic controller cabinet provided by the embodiment nine is further limited, the front panel is provided with a boss for extruding the outer insulation pad in the direction perpendicular to the front panel.

[0063] Embodiment eleven, in combination Figures 1-3 The embodiment is described in detail by specific examples, and the technical solutions provided above are described in detail, specifically:

[0064] As shown in Figure 1 A signal grounding mode of a sealed shielding cabinet, comprising a main box 1, a front panel 2, a signal grounding bolt 3, and a cabinet grounding bolt 4. The main box 1 is the main part of the cabinet, and various electrical components required by the piezoelectric ceramic are arranged in the main box 1. The panels between the main box 1 are connected by screws to form a sealed space.

[0065] The front panel 2 is installed in front of the main box body 1 and connected by screws, and a plurality of through holes for external connection are formed on the front panel for signal exchange with the outside, including signal grounding bolt 3 and case grounding bolt 4. The case grounding bolt 4 is a conventional grounding bolt, which serves to ground the case.

[0066] As shown in Figure 2 and Figure 3 The front panel 2 and the main box body 1 are provided with a sealing strip 5, which is an annular strip wrapped around the front panel to achieve sealing effect.

[0067] The signal grounding bolt 3 includes coil locking nut 301, flat pad 302, elastic pad 303, inner coil 304, brass screw 305, insulating pad locking nut 306, inner insulating pad 307, outer insulating pad 308, outer coil 309, and nut 310.

[0068] The brass screw 305 can be divided into two parts inside and outside the box through the through hole on the front panel 2, and the outer part has a boss which can be used to press the outer insulating pad 308. The outer coil 309 is installed on the other side of the boss and is fixed on the brass screw 305 by nut 310.

[0069] The inner insulating pad 307 is tightly fixed to the inner side of the front panel 2 by the cooperation of the flat pad 302, the elastic pad 303 and the insulating pad locking nut 306. The inner coil 304 is fixed on the insulating pad locking nut 306 by another pair of flat pad 302 and elastic pad 303 cooperating with the coil locking nut 301. The coil locking nut 301, the insulating pad locking nut 306 and the nut 310 can be screwed with the brass screw 305 to fasten the remaining parts.

[0070] The inner coil 304 receives the internal grounding signal and transmits it to the outer coil 309 on the outside of the case through the brass screw 305, and then completes the grounding connection through the outer coil 309. During the process, the brass screw 305 and the front panel 2 maintain an insulating state due to the effect of the insulating pad, so that the signal ground and the case ground are separated. Because the insulating pad and the brass screw 305, and the insulating pad and the front panel 2 are all gap-fitted, the whole case maintains a sealed state, so as to ensure that the case can pass the salt spray test and electromagnetic interference.

[0071] The technical solution provided by the embodiment effectively realizes the leading out and isolation of the signal ground by setting the signal grounding bolt 3 on the front panel 2 and using the combination design of the brass screw 305, the insulating pad 307, and the coil 304. The brass screw 305 serves as a bridge for signal ground transmission and is in good contact with the internal ground signal through the nut 301 and the gaskets 302 and 303. At the same time, the outer side is fixed by the screw cap 310 and the external coil 309, realizing good lapping performance of the signal ground. This design keeps the signal ground separate from the chassis ground, reducing signal interference and noise problems caused by improper grounding.

[0072] The seal strip 5 design between the chassis front panel 2 and the main chassis 1 provides excellent sealing performance. This seal strip can effectively prevent salt mist and electromagnetic interference from entering the chassis interior, ensuring the reliability of the chassis during salt mist test and electromagnetic interference test. Compared with traditional design, this stronger sealing design significantly improves the performance of the chassis in harsh environments.

[0073] By using the combination of nylon insulating pad 307 and brass screw 305, the scheme realizes effective insulation between the inside and outside of the chassis. The insulating pad 307 provides good isolation between the brass screw 305 and the chassis, preventing the conduction of signal interference. This design is superior to existing technology in signal isolation, better protecting internal signals from external electromagnetic interference.

[0074] The chassis adopts a 1U standard chassis structure, and a seal strip 5 is used to assist sealing at the connection between the boards, further enhancing the overall sealing of the chassis. Compared with traditional chassis structure, this design provides better sealing effect, ensuring the stability and reliability of the chassis during use.

[0075] The two coils 304 and 309 inside and outside are connected by the brass screw 305 with good conductivity for signal transmission, and the nylon insulating pad 307 is installed between the brass screw 305 and the chassis. This structural design ensures smooth signal flow while blocking signal transmission between the chassis and the brass screw 305, enhancing the stability and accuracy of signal transmission. Compared with existing technology, this design effectively improves the signal transmission performance of the chassis.

[0076] The signal is led out to the outside of the device by the brass screw 305, and the internal signal ground is well lapped with the brass screw 305 by the coil lock nut 301 and various gaskets 302 and 303, and the external signal ground is fixed by the screw cap 310, together ensuring good lapping performance of the signal ground.

[0077] Two nylon insulation pads 307, 308 are sleeved outside the brass screw 305, which respectively block the signal connection between the brass screw 305 and the inner and outer cabinet, a nut 310 is threadedly connected to the outside of the cabinet, and the outside coil 309 and the nylon insulation pad 307 are fixed by tightening the nut 310, so that the inside and outside of the cabinet are closed, and the cabinet can pass the salt spray test and electromagnetic interference.

[0078] In addition, the cabinet adopts a 1U standard cabinet structure, and the connection between the boards is sealed by a sealing strip 5, two grounding terminals are additionally installed on the front panel 2 of the cabinet, which are a signal grounding terminal and a cabinet grounding terminal, the cabinet grounding terminal is a conventional cabinet grounding connection mode, and the signal grounding is grounded through the front panel 2 of the cabinet by means of an insulating part.

[0079] Two coils 304, 309 are arranged inside and outside the cabinet for signal flow, and a brass screw 305 with good conductivity is arranged between the two coils for signal transmission, a nylon insulation pad 307 is sleeved between the brass screw 305 and the cabinet to block the signal transmission between the cabinet and the brass screw 305.

[0080] The inside of the cabinet is positioned by a nut 301 and various gaskets 302, 303 to fix the internal insulation pad 307, and the outside is positioned by a brass nut 310 to fix the position of the brass screw 305 relative to the cabinet.

[0081] The above describes the technical solutions provided by the utility model in further detail through several specific embodiments, in order to highlight the advantages and benefits of the technical solutions provided by the utility model, but the above several specific embodiments are not used as a limitation of the utility model, any reasonable modification and improvement of the utility model, combination and equivalent replacement of the embodiments, etc. based on the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. Signal ground bolt, characterized in that Comprising: a screw, a coil lock nut and a screw cap threadedly engaged with the screw at both ends of the screw; an inner lead coil and an outer lead coil disposed between the lock nut and the screw cap, the inner lead coil being proximate to the coil lock nut; an inner insulation pad and an outer insulation pad disposed between the inner lead coil and the outer lead coil, the inner insulation pad being proximate to the inner lead coil.

2. The signal ground stud of claim 1, wherein, Further comprising: an insulation pad lock nut disposed between the inner lead coil and the inner insulation pad.

3. The signal ground stud of claim 2, wherein, Further comprising: a spring washer disposed between the coil lock nut and the inner lead coil.

4. The signal ground stud of claim 3, wherein, Further comprising: a flat washer disposed between the spring washer and the coil lock nut.

5. The signal ground stud of claim 3 or 4, wherein, Further comprising: a flat washer disposed between the insulation pad lock nut and the inner insulation pad.

6. The signal ground stud of claim 1, wherein, The screw is a brass screw.

7. A sealed piezoceramic controller enclosure, characterized by The cabinet comprises: a main cabinet body with one open side for accommodating a piezoelectric ceramic electrical element; a front panel for closing the opening of the main cabinet body, forming a sealed space with the front panel; a through hole is provided on the front panel for sleeving a cabinet grounding bolt and a signal grounding bolt according to claim 5; the cabinet grounding bolt and the signal grounding bolt are both in sealed connection with the front panel.

8. The hermetically sealed piezoelectric ceramic controller enclosure of claim 7, wherein, A sealing strip is provided at the contact between the front panel and the main cabinet body, and all the sealing strips are arranged around the contact between the main cabinet body and the front panel.

9. The hermetically sealed piezoelectric ceramic controller enclosure of claim 7, wherein, On the signal grounding bolt, the inner insulation pad is disposed inside the main cabinet body, and the outer insulation pad is disposed outside the main cabinet body; the inner insulation pad is fastened to the inner wall of the front panel by the insulation pad lock nut, and the outer insulation pad is fastened to the outer wall of the front panel by the screw cap.

10. The hermetically sealed piezoelectric ceramic controller enclosure of claim 9, wherein, A boss is provided on the front panel for pressing the outer insulation pad in a direction perpendicular to the front panel.

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