CN201998085U - Clamp for assembling compression type piezoelectric transducer - Google Patents

Clamp for assembling compression type piezoelectric transducer Download PDF

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Publication number
CN201998085U
CN201998085U CN2010206430759U CN201020643075U CN201998085U CN 201998085 U CN201998085 U CN 201998085U CN 2010206430759 U CN2010206430759 U CN 2010206430759U CN 201020643075 U CN201020643075 U CN 201020643075U CN 201998085 U CN201998085 U CN 201998085U
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CN
China
Prior art keywords
sleeve
anchor clamps
piezoelectric transducer
hole
equates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010206430759U
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Chinese (zh)
Inventor
毛利萍
董显林
王根水
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Institute of Ceramics of CAS
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Shanghai Institute of Ceramics of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Priority to CN2010206430759U priority Critical patent/CN201998085U/en
Application granted granted Critical
Publication of CN201998085U publication Critical patent/CN201998085U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a clamp for assembling a compression type piezoelectric transducer, which belongs to the transducer field. The clamp for assembling a compression type piezoelectric transducer comprises an external ferrule and an internal lock sleeve correspondingly located inside the external ferrule. The external ferrule comprises two symmetrical clamping blocks and a through hole encircled by the two clamping blocks. The two clamping blocks are in detachable connection. A lining which is equipped inside the internal lock sleeve matches the internal lock sleeve. The external ferrule and the internal lock sleeve in the utility model are made of carbon steel or stainless steel materials. The lining is made of flexible materials. By means of the clamp in the utility model to assemble a compression type piezoelectric transducer, one-time successful assembling ratio and the uniformity of products can be enhanced. Meanwhile, the compression type piezoelectric transducer is enabled to have greater performances.

Description

A kind of compression piezoelectric transducer assembling anchor clamps
Technical field
The utility model belongs to sensor field, relates to a kind of compression piezoelectric transducer assembling anchor clamps.
Background technology
Piezoelectric is a kind of functional material of extensive use, because it has numerous unrivaled advantages such as piezo-electric effect is strong, temperature stability good, dispense with outer connecting power, thereby be used to make polytype sensor, as acceleration transducer, power sensor and pressure sensor.In numerous sensor constructions, the compression piezoelectric transducer directly is fixed on piezoelectric element on the pedestal, simple in structure, reliable operation, can accomplish high sensitivity and high-frequency response, thus become use at most and service time the longest structure devices.
Under the piezoelectric element of piezoelectric transducer generally all more than a slice, the particularly situation that the piezoelectric element piezoelectric modulus is lower needing the output sensitivity height, just more need to adopt the mode of multi-disc parallel connection.Generally connect between these piezoelectric elements, and keep the gap of certain distance to reach the purpose of insulation with the metal center post with drawing electric sheet.During assembling, must guarantee piezoelectric element and draw electric sheet and neatly overlap, and at the center of sensor base not have with newel and touch.Otherwise not only will influence the one-time success rate of assembling, also will influence performance indications such as frequency response, cross sensitivity and the uniformity etc. of sensor.
For addressing the above problem, when assembling compression piezoelectric transducer, often adopt following two kinds of methods: the one, at sensor base newel and piezoelectric element, draw electric sheet contact position and put insulating materials such as plastic bushing, but this can influence the property easy to assembly of piezoelectric element, and plastic material is aging easily; The 2nd, adopt metal fixture, but because piezoelectric element is frangible, improper or the machining accuracy of method is bad during assembling etc., and reason all is easy to make piezoelectric element to damage in assembling process, and size has certain deviation during owing to the sensor part processing, and anchor clamps generally all are fixed dimension, accuracy and precision when being difficult to guarantee assembling influence assembly yield greatly.
The utility model content
The purpose of this utility model provides a kind of compression piezoelectric transducer assembling anchor clamps, to overcome above-mentioned the deficiencies in the prior art, described anchor clamps are particularly useful for the assembling of multi-disc piezoelectric element overlay and parallel connection or cascaded structure, can guarantee the success rate of compression piezoelectric transducer assembling and the uniformity of performance indications.
In order to solve the problems of the technologies described above, the utility model is realized by the following technical solutions:
Compression piezoelectric transducer assembling anchor clamps of the present utility model, comprise outer cutting ferrule and cater to the interior interior lock sleeve of outer cutting ferrule, described outer cutting ferrule comprises the fixture block of two symmetries and the through hole that two fixture blocks surround, and the detachable connection of two fixture blocks also is provided with lining with matching in the described interior lock sleeve.
Described two fixture blocks connect through screw or pin; Described screw or pin can add piece and fix two fixture blocks wearing two.
Described through hole comprises first cylindrical hole, second cylindrical hole and the reverse frustoconic through hole that connection successively and central shaft overlap, the radius of described first cylindrical hole is less than the radius of second cylindrical hole, and the radius of second cylindrical hole equates than long radius with the reverse frustoconic through hole; Lock sleeve caters in second cylindrical hole and reverse frustoconic through hole of outer cutting ferrule in described, comprise cylindrical sleeve that is connected as a single entity and the reverse frustoconic sleeve that has cylindrical hole, the internal diameter of described cylindrical sleeve and reverse frustoconic sleeve equates and central shaft all overlaps with the central shaft of second cylindrical hole; Described lining caters in the cylindrical sleeve of interior lock sleeve.
The profile of described reverse frustoconic sleeve is a reverse frustoconic, in be provided with cylindrical hole.
The profile of described outer cutting ferrule is cross.
Also have a plurality of open slots that extend axially and run through the reverse frustoconic sleeve lateral wall on the inwall of lock sleeve in described.
The diameter of described first cylindrical hole equates that with the external diameter of compression piezoelectric transducer mass height equates with the height of the mass of described compression piezoelectric transducer or be smaller;
The diameter of described lining equates that with the external diameter of compression sensor piezoelectric element height equates with described sensor piezoelectric element;
The internal diameter of described reverse frustoconic sleeve equates that with the external diameter of the base of compression piezoelectric transducer height equates with described base.
The utility model compression piezoelectric transducer assembling special fixture, its outer cutting ferrule and interior lock sleeve adopt carbon steel or stainless steel material to make, and its lining adopts flexible material to make, and described flexible material comprises duroplasts.
When using anchor clamps of the present utility model to assemble, with piezoelectric element with after drawing electric sheet and putting into compression piezoelectric transducer base successively, the reverse frustoconic through hole that at first will have the interior lock sleeve of lining entangles the external diameter of compression piezoelectric transducer base, again the wild card cover being entangled internal lock tightly overlaps, movable sensor makes interior locking cover locking sensor base and is located, and with hold-down screw outer cutting ferrule is fixed on the sensor base then.This moment, lining just in time entangled piezoelectric element, and first cylindrical hole part of outer cutting ferrule is just in time entangled mass.Lock sleeve moves backward in driving when sensor is mobile backward, it is tightened up for reverse frustoconic sleeve downward pressure, so the reverse frustoconic sleeve just can be held sensor base tightly.Simultaneously because anchor clamps and sensor all once assemble machines, therefore can guarantee to be applied the stressed uniformity of thing after using anchor clamps, the neat coincidence that makes piezoelectric element and draw electric sheet, and concentric with sensor base, can be because of sensor base, mass equidimension differentia influence assembly quality.Because lining adopts duroplasts, therefore both piezoelectric element can easily have been pushed away and put neatly in addition, again can be because of the excessive piezoelectric element that damages of folder power.Therefore use special fixture provided by the utility model, can improve success rate, the consistency of product of the disposable assembling of compression piezoelectric transducer and obtain more excellent performance.
Description of drawings
Fig. 1 (a) is the overall structure schematic diagram of anchor clamps, and Fig. 1 (b) is the structural representation of interior lock sleeve
Among the figure: the outer cutting ferrule of 1-; Lock sleeve in the 2-; 11,13-fixture block; The 12-screw, the through hole of the outer cutting ferrule of 3-
Fig. 2 is the anchor clamps cutaway view
Fig. 3 is outer cutting ferrule internal view
Fig. 4 is the interior lock sleeve cutaway view of belt material cover
Among the figure: the 21-cylindrical sleeve; 22-reverse frustoconic sleeve; The 23-open slot; The 4-lining
Fig. 5 is the structural representation of compression piezoelectric transducer
Among the figure: the 61-mass; The 62-piezoelectric element; The 63-base; 64-draws electric sheet; The 65-newel
The specific embodiment
Further set forth the utility model below in conjunction with specific embodiment, should be understood that embodiment only be used to the utility model is described and be not used in the restriction protection domain of the present utility model.
Embodiment
Compression piezoelectric transducer assembling anchor clamps of the present utility model, its structural representation such as Fig. 1 (a) and shown in Figure 2, comprise outer cutting ferrule 1 and cater to the interior interior lock sleeve 2 of outer cutting ferrule, outer cutting ferrule as shown in Figure 3, interior lock sleeve such as Fig. 1 (b) and shown in Figure 4, described outer cutting ferrule 1 comprises the fixture block 11,13 of two symmetries and the through hole 3 that two fixture blocks surround, two fixture blocks are fixing in aggregates through two through screws or pin 12, shown in Fig. 1 (a), also be provided with lining 4 with matching in the described interior lock sleeve 2.
Outer cutting ferrule as shown in Figure 3, the through hole of described outer cutting ferrule comprises first cylindrical hole 31, second cylindrical hole 32 and the reverse frustoconic through hole 33 that connection successively and central shaft overlap, the radius of described first cylindrical hole 31 is less than the radius of second cylindrical hole 32, and the radius of second cylindrical hole 32 equates than long radius with reverse frustoconic through hole 33;
The interior lock sleeve of belt material cover as shown in Figure 4, lock sleeve caters in second cylindrical hole 32 and reverse frustoconic through hole 33 of outer cutting ferrule in described, comprise cylindrical sleeve 21 that is connected as a single entity and the reverse frustoconic sleeve 22 that has cylindrical hole, the internal diameter of described cylindrical sleeve 21 and reverse frustoconic sleeve 22 equates and central shaft all overlaps with the central shaft of second cylindrical hole 32; Described lining 4 caters in the cylindrical sleeve 21 of interior lock sleeve.
The profile of described reverse frustoconic sleeve 22 is a reverse frustoconic, in be provided with cylindrical hole.
The profile of described outer cutting ferrule 1 is cross.
Also have a plurality of open slots 23 that extend axially and run through reverse frustoconic sleeve 22 sidewalls on the inwall of lock sleeve 2 in described.
Compression piezoelectric transducer as shown in Figure 5,
The diameter of described first cylindrical hole 31 equates that with the external diameter of piezoelectric transducer mass 61 height equates with the height of described mass or be smaller;
The diameter of described lining 4 equates that with the external diameter of sensor piezoelectric element 62 height equates with described piezoelectric element;
The internal diameter of described reverse frustoconic sleeve 22 equates that with the external diameter of piezoelectric transducer base 63 height equates with described base.
The utility model compression piezoelectric transducer assembling special fixture, its outer cutting ferrule 1 and interior lock sleeve 2 adopt carbon steel or stainless steel material to make, and its lining 4 adopts flexible material to make, and described flexible material comprises duroplasts.
When using anchor clamps of the present utility model, as shown in Figure 4 and Figure 5, with piezoelectric element 62 with draw electric sheet 64 and put into successively on the base 63 of compression piezoelectric transducer, the reverse frustoconic sleeve 22 that will have the interior lock sleeve 2 of lining 4 again entangles sensor base 63, make piezoelectric element 62 preconditioned neat, then the mass 61 with the compression piezoelectric transducer is put on the piezoelectric element.Outside the lock sleeve 2, adjust outer cutting ferrule simultaneously in outer cutting ferrule 1 is enclosed within, the screw of screwing on makes outer cutting ferrule hold described mass tightly but extremely stubborn; Adjust sensor, sensor is moved backward, lock sleeve moves backward vertically in driving simultaneously, lock sleeve was held sensor base 63 gradually tightly in the effect of the reverse frustoconic sleeve 22 by interior lock sleeve made, when sensor vertically can not be mobile again, blocked the location this moment, and promptly available hold-down screw is fixedly clamped them.Tighten each part of the sensor fixing with pre-load nut at last.After finishing assembling, can unclamp hold-down screw, pull down anchor clamps.

Claims (10)

1. a compression piezoelectric transducer assembles and uses anchor clamps, it is characterized in that, comprise outer cutting ferrule and cater to the interior interior lock sleeve of outer cutting ferrule, described outer cutting ferrule comprises the fixture block of two symmetries and the through hole that two fixture blocks surround, the detachable connection of two fixture blocks also is provided with lining with matching in the described interior lock sleeve.
2. anchor clamps as claimed in claim 1, it is characterized in that: described through hole comprises first cylindrical hole, second cylindrical hole and the reverse frustoconic through hole that connection successively and central shaft overlap, the radius of described first cylindrical hole is less than the radius of second cylindrical hole, and the radius of second cylindrical hole equates than long radius with the reverse frustoconic through hole; Lock sleeve caters in second cylindrical hole and reverse frustoconic through hole of outer cutting ferrule in described, comprise cylindrical sleeve that is connected as a single entity and the reverse frustoconic sleeve that has cylindrical hole, the internal diameter of described cylindrical sleeve and reverse frustoconic sleeve equates and central shaft all overlaps with the central shaft of second cylindrical hole; Described lining caters in the cylindrical sleeve of interior lock sleeve.
3. anchor clamps as claimed in claim 2 is characterized in that: also have a plurality of open slots that extend axially and run through the reverse frustoconic sleeve lateral wall on the inwall of lock sleeve in described.
4. anchor clamps as claimed in claim 2 is characterized in that: the diameter of described first cylindrical hole equates that with the external diameter of compression piezoelectric transducer mass height equates with the height of the mass of described compression piezoelectric transducer or be smaller.
5. anchor clamps as claimed in claim 2 is characterized in that: the internal diameter of described reverse frustoconic sleeve equates that with the external diameter of the base of described compression piezoelectric transducer height equates with the height of described base.
6. as the arbitrary described anchor clamps of claim 1-5, it is characterized in that: the diameter of described lining equates that with the external diameter of compression piezoelectric transducer piezoelectric element height equates with the height of described piezoelectric element.
7. as the arbitrary described anchor clamps of claim 1-5, it is characterized in that: described two fixture blocks connect through screw or pin.
8. anchor clamps as claimed in claim 6 is characterized in that: described two fixture blocks connect through screw or pin.
9. as the arbitrary described anchor clamps of claim 1-5, it is characterized in that: the profile of described outer cutting ferrule is cross.
10. anchor clamps as claimed in claim 6 is characterized in that: the profile of described outer cutting ferrule is cross.
CN2010206430759U 2010-12-06 2010-12-06 Clamp for assembling compression type piezoelectric transducer Expired - Fee Related CN201998085U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206430759U CN201998085U (en) 2010-12-06 2010-12-06 Clamp for assembling compression type piezoelectric transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206430759U CN201998085U (en) 2010-12-06 2010-12-06 Clamp for assembling compression type piezoelectric transducer

Publications (1)

Publication Number Publication Date
CN201998085U true CN201998085U (en) 2011-10-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106853614A (en) * 2015-12-09 2017-06-16 中国科学院上海硅酸盐研究所 A kind of piezoelectric acceleration sensor piezoelectric system test fixture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106853614A (en) * 2015-12-09 2017-06-16 中国科学院上海硅酸盐研究所 A kind of piezoelectric acceleration sensor piezoelectric system test fixture
CN106853614B (en) * 2015-12-09 2019-04-16 中国科学院上海硅酸盐研究所 A kind of piezoelectric acceleration sensor piezoelectric system test fixture

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111005

Termination date: 20171206