CN219666415U - Sensor assembly fixture - Google Patents
Sensor assembly fixture Download PDFInfo
- Publication number
- CN219666415U CN219666415U CN202320778221.6U CN202320778221U CN219666415U CN 219666415 U CN219666415 U CN 219666415U CN 202320778221 U CN202320778221 U CN 202320778221U CN 219666415 U CN219666415 U CN 219666415U
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- base
- pressing plate
- top end
- sensor
- pressing
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- 238000003825 pressing Methods 0.000 claims abstract description 51
- 238000009434 installation Methods 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 2
- 230000001133 acceleration Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a sensor assembly fixture, in particular to a piezoelectric acceleration sensor assembly fixture, which comprises a base, a pressing plate and fastening bolts, wherein the base is of a U-shaped structure, the bottom end of the inner wall of the base is provided with a mounting part, and the top end of the mounting part is provided with a positioning pin and three positioning rods; the bottom end of the pressing plate is provided with a pressing part, and the pressing part and the positioning pin are coaxially arranged; the fastening bolts are provided with a plurality of groups, nuts of the plurality of groups of fastening bolts are positioned at the top end of the pressing plate, and one end of a screw rod of each fastening bolt penetrates through and extends to the top end of the pressing plate to be connected with the top end of the base; in the utility model, the fixture has simple structure and low manufacturing cost, and can ensure the assembly precision, reliability and consistency of the piezoelectric acceleration sensor through the coaxial arrangement of the positioning pin and the pressing part; meanwhile, the mounting holes are formed in the pressing plate and used for mounting the core sleeve, so that concentricity of the propping part at the bottom of the pressing plate and the inner components of the sensor in the assembly process can be kept.
Description
Technical Field
The utility model relates to a sensor assembly fixture, in particular to a piezoelectric acceleration sensor assembly fixture.
Background
The piezoelectric acceleration sensor consists of a plurality of parts, the assembly of the traditional structural sensor assembly adopts a simple manual tool, and a fixture clamp is not adopted, but the assembly requirement cannot be met by only assembling the piezoelectric acceleration sensor through the manual tool, and the assembly precision cannot be ensured, for example, the assembled assembly has the conditions of irregular stack of a plurality of piezoelectric elements and insulating sheets, inconvenient assembly pretightening force loading operation, poor performance output consistency of the assembled sensor assembly and the like; therefore, the piezoelectric acceleration sensor is assembled by adopting a high-precision special fixture at present, such as an assembly fixture for a miniature acceleration sensor disclosed in the prior publication No. CN112643591B, and the assembly fixture is complex in structure, high in manufacturing cost and greatly increased in production investment cost although the assembly precision can be ensured.
Therefore, it is necessary to provide a tooling which is low in cost and capable of ensuring the assembly precision for assembling the piezoelectric acceleration sensor.
Disclosure of Invention
The utility model aims to provide a sensor assembly fixture, which mainly solves the technical problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
sensor assembly fixture includes:
the base is of a U-shaped structure, the bottom end of the inner wall of the base is provided with a mounting part, and the top end of the mounting part is provided with a positioning pin and three positioning rods which are used for positioning and mounting the base and the matrix of the sensor respectively;
the bottom end of the pressing plate is provided with a pressing part, and the pressing part and the locating pin are coaxially arranged and used for pressing the top end of the mass block of the sensor;
the fastening bolts are provided with a plurality of groups, the nuts of the fastening bolts are located at the top end of the pressing plate, and one end of a screw rod of the fastening bolt penetrates through and extends to the bottom end of the pressing plate to be connected with the top end of the base.
Preferably, the top end of the base is provided with a plurality of thread grooves matched with the fastening bolts, and the top end of the pressing plate is provided with through holes corresponding to the thread grooves in position.
Preferably, the structure of the through hole is a strip through hole.
Preferably, the bottom of the pressing part is provided with two propping blocks for being inserted into an insertion groove arranged at the top of the mass block to be propped.
Preferably, the top of clamp plate is provided with the mounting hole, the mounting hole with the coaxial setting of clamp section, the mounting hole runs through the bottom of clamp section for installation lock nut and core sleeve.
Preferably, the mounting hole is provided in a countersunk shape, and the top of the mounting hole is provided in a conical structure.
Compared with the prior art, the utility model has the beneficial effects that:
in the utility model, the fixture has simple structure and low manufacturing cost, and can ensure the assembly precision, reliability and consistency of the piezoelectric acceleration sensor through the coaxial arrangement of the positioning pin and the pressing part; meanwhile, the mounting holes are formed in the pressing plate and used for mounting the core sleeve, so that concentricity of the propping part at the bottom of the pressing plate and the inner components of the sensor in the assembly process can be kept.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a sensor assembly tooling of the present utility model;
FIG. 2 is a schematic view of the sensor-equipped structure of FIG. 1 in accordance with the present utility model;
FIG. 3 is a schematic view of the back side structure of the platen of FIG. 1 in accordance with the present utility model;
in the figure: the device comprises a base 1, a mounting part 11, a positioning pin 12, a thread groove 13, a positioning rod 14, a pressing plate 2, a pressing part 21, a pressing block 22, a mounting hole 23, an elongated through hole 24, a fastening bolt 3, a sensor 4, a base 41, a base 42, an inner cushion block 43, an insulating gasket 44, a piezoelectric material 45, a conductive sheet 46, a mass block 47 and a core sleeve 5.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-2, the utility model provides a sensor assembly fixture, which comprises a base 1, a pressing plate 2 and a fastening bolt 3, wherein the base 1 is of a U-shaped structure, the bottom end of the inner wall of the base 1 is in a convex shape to form an installation part 11 for supporting and installing a base 41 and a base 42 of a sensor 4, and a locating pin 12 and three locating rods 14 are welded at the top end of the installation part 11 and used for respectively locating and installing the base 42 and the base 41 of the sensor 4; the bottom end of the pressing plate 2 is provided with a cylindrical pressing part 21 for pressing the top end of the mass block 47 of the sensor 4, and the pressing part 21 is coaxially arranged with the positioning pin 12 and is used for ensuring the installation precision of the sensor 4; the fastening bolts 3 are provided with a plurality of groups, nuts of the plurality of groups of fastening bolts 3 are located at the top end of the pressing plate 2, and one end of a screw rod of the fastening bolt 3 penetrates through and extends to the bottom end of the pressing plate 2 to be connected with the top end of the base 1.
In this embodiment, referring to fig. 3, in the use process of the assembly tool, the pressing plate 2 is separated from the base 1, then the base 42 is placed on the mounting portion 11, and is positioned and mounted by the positioning pins 12, then the internal cushion block 43, the insulating spacer 44, the piezoelectric material 45, the conductive sheet 46, the mass block 47 and the base 41 are sequentially sleeved on the base 42, and the base 41 is positioned and mounted by the positioning rods 14, so that the subsequent welding process is facilitated; then, the pressing plate 2 is mounted on the top end of the base 1, so that the pressing part 21 is inserted into the top end of the inner wall of the base 41 and presses the mass block 47, and then the pressing plate 2 is fixedly mounted on the base 1 through the fastening bolt 3; meanwhile, in the process of tightening the fastening bolt 3, the internal components of the sensor 4 can be pressed on the top end of the mounting part 11 under the extrusion of the pressing part 21, so that the base 41 of the sensor 4 and the internal components are fixedly mounted before the lock nut is mounted; the fixture is simple in structure and low in manufacturing cost, and can ensure the assembly precision, reliability and consistency of the piezoelectric acceleration sensor through the coaxial arrangement of the positioning pin 12 and the pressing part 21.
Specifically, the top end of the base 1 is provided with a plurality of thread grooves 13 matched with the fastening bolts 3, the top end of the pressing plate 2 is provided with through holes corresponding to the positions of the thread grooves 13, so that the fastening bolts 3 can be conveniently installed in the thread grooves 13 through the through holes, the pressing plate 2 is fixedly installed at the top end of the base 1, and the base 41 and internal components of the sensor 4 are fixed; in addition, the through holes are provided as the long through holes 24, so that the mounting pitch between the plurality of fastening bolts 3 can be adjusted, and the fastening bolts 3 cannot be mounted in the screw grooves 13 due to machining errors of the plurality of through holes can be prevented.
Specifically, the bottom of the compressing part 21 is provided with two propping blocks 22 for being inserted into the insertion groove arranged at the top of the mass block 47 to be propped up, so that the assembly precision is further ensured.
Specifically, the top end of the pressing plate 2 is provided with a mounting hole 23, the mounting hole 23 and the pressing part 21 are coaxially arranged, and the mounting hole 23 penetrates through the bottom end of the pressing part 21 and is used for mounting a lock nut and the core sleeve 5; after the base 41 and the internal components of the sensor 4 are installed, the core sleeve 5 is installed on the top of the base 42, and then the pressing plate 2 is sleeved on the outer surface of the core sleeve 5 for installation, so that concentricity of the pressing part 21 at the bottom of the pressing plate 2 and the internal components of the sensor 4 in the assembly process can be maintained; after the equal pressure plate 2 is fixedly installed on the base 1 through the fastening bolt 3, the core sleeve 5 is taken out from the installation hole 23, the locking nut passes through the installation hole 23 through the torque wrench, and the locking nut is installed at the top end of the base 42 in a threaded manner to lock and fix the internal components of the sensor 4.
Specifically, the mounting hole 23 is provided in a countersunk shape, and the top of the mounting hole 23 is provided in a tapered structure, so that the lock nut and the core sleeve 5 can be aligned and mounted.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (6)
1. Sensor assembly fixture, its characterized in that includes:
the sensor comprises a base (1), wherein the base (1) is of a U-shaped structure, an installation part (11) is arranged at the bottom end of the inner wall of the base (1), and a locating pin (12) and three locating rods (14) are arranged at the top end of the installation part (11) and used for respectively locating and installing a base (42) and a matrix (41) of the sensor (4);
the pressing plate (2), the bottom end of the pressing plate (2) is provided with a pressing part (21), and the pressing part (21) and the locating pin (12) are coaxially arranged and used for pressing the top end of the mass block (47) of the sensor (4);
fastening bolt (3), fastening bolt (3) are provided with the multiunit, and the multiunit the nut of fastening bolt (3) is located the top of clamp plate (2), the screw rod one end of fastening bolt (3) runs through and extends to the bottom of clamp plate (2) with the top of base (1) is connected.
2. The sensor assembly fixture of claim 1, wherein: the top end of the base (1) is provided with a plurality of thread grooves (13) matched with the fastening bolts (3), and the top end of the pressing plate (2) is provided with through holes corresponding to the thread grooves (13).
3. The sensor assembly fixture of claim 2, wherein: the structure of the through holes is provided as strip-shaped through holes (24).
4. The sensor assembly fixture of claim 1, wherein: the bottom of the pressing part (21) is provided with two propping blocks (22) which are used for being inserted into an insertion groove arranged at the top of the mass block (47) to be propped.
5. The sensor assembly fixture of claim 1, wherein: the top of clamp plate (2) is provided with mounting hole (23), mounting hole (23) with compress tightly portion (21) coaxial setting, mounting hole (23) run through the bottom of compress tightly portion (21) for installation lock nut and core sleeve (5).
6. The sensor assembly fixture of claim 5, wherein: the mounting holes (23) are arranged in a counter-sunk shape, and the tops of the mounting holes (23) are arranged in a conical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320778221.6U CN219666415U (en) | 2023-04-10 | 2023-04-10 | Sensor assembly fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320778221.6U CN219666415U (en) | 2023-04-10 | 2023-04-10 | Sensor assembly fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219666415U true CN219666415U (en) | 2023-09-12 |
Family
ID=87897233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320778221.6U Active CN219666415U (en) | 2023-04-10 | 2023-04-10 | Sensor assembly fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219666415U (en) |
-
2023
- 2023-04-10 CN CN202320778221.6U patent/CN219666415U/en active Active
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| GR01 | Patent grant |