CN212514647U - Push-out line type high-temperature piezoelectric acceleration sensor - Google Patents
Push-out line type high-temperature piezoelectric acceleration sensor Download PDFInfo
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- CN212514647U CN212514647U CN202020725196.1U CN202020725196U CN212514647U CN 212514647 U CN212514647 U CN 212514647U CN 202020725196 U CN202020725196 U CN 202020725196U CN 212514647 U CN212514647 U CN 212514647U
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Abstract
The utility model discloses a push-out wire type high-temperature piezoelectric acceleration sensor, which comprises a single-core aviation plug, a signal wire, a mass block, a piezoelectric device, an outer shell and a bracket provided with a central shaft; the piezoelectric device is sleeved on the central shaft of the bracket and is provided with a positive output end and a negative output end; the mass block is sleeved on the central shaft; the bottom of the outer shell is connected to the bracket; the single-core aviation plug is arranged on the outer shell; the utility model conducts the positive output end of the piezoelectric device with the mass block and conducts the negative output end of the piezoelectric device with the outer shell; therefore, the aviation plug core body of the single-core aviation plug can be connected to the top of the mass block through a signal wire, and the aviation plug shell of the single-core aviation plug is directly communicated with the outer shell; thereby realizing the communication between the single-core aviation plug and the piezoelectric device; therefore, the situation that a signal wire is arranged in a gap between the mass block and the outer shell and is used for communicating the single-core aerial plug and the piezoelectric device at the upper end and the lower end of the mass block is avoided, and the assembling difficulty of the acceleration sensor is greatly reduced.
Description
Technical Field
The utility model relates to an acceleration sensor's technical field especially relates to an ejecting line formula high temperature piezoelectricity acceleration sensor.
Background
The acceleration sensor is a test instrument for converting pressure generated by physical phenomena such as acceleration, vibration and impact into an electric signal convenient for measurement, and can be installed at a high-temperature part such as an engine casing and nuclear power to monitor the acceleration, the vibration or the impact.
The existing acceleration sensor generally includes an outer housing, a piezoelectric device, a mass, and a single-core aviation plug, wherein the piezoelectric device and the mass are both fitted in the outer housing, and the piezoelectric device must also be located below the mass, pressed by the mass. The single-core aviation plug is arranged on the top of the outer shell, and the single-core aviation plug needs to pass through a gap between the mass block and the outer shell through a long signal wire and is connected to the piezoelectric device, so that the transmission of electric signals is realized.
However, it has been observed that the long signal lines need to be maintained in the gap between the mass and the outer housing, which greatly increases the difficulty of assembling the acceleration sensor.
In view of this, the present designer is able to make a deep conception on the defects and inconveniences caused by the incomplete improvement of the structural design of the acceleration sensor, and actively research, improve and try to develop and design the present invention.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an easy ejecting line formula high temperature piezoelectricity acceleration sensor who assembles.
In order to achieve the above purpose, the solution of the present invention is:
a push-out wire type high-temperature piezoelectric acceleration sensor comprises a single-core aerial plug, a signal wire, a mass block, a piezoelectric device, an outer shell and a bracket provided with a central shaft; the piezoelectric device is sleeved on the central shaft of the bracket and is provided with a positive output end and a negative output end, and the negative output end of the piezoelectric device is communicated with the bracket; the mass block is sleeved on the central shaft, is pressed on the piezoelectric device and is also conducted with the positive output end of the piezoelectric device; the bottom of the outer shell is connected to the bracket and communicated with the bracket, and meanwhile, the top end of the outer shell is provided with a through hole; the single-core aerial plug comprises an aerial plug shell and an aerial plug core body which are insulated from each other; the single-core aerial plug is installed in the through hole, wherein the aerial plug shell is communicated with the outer shell, and the aerial plug core body is communicated to the top of the mass block through a signal line.
The outer shell comprises a shell main body and an upper cover; one end of the shell main body is connected to the support, and the upper cover is detachably matched with the other end of the shell main body; the through hole is arranged on the upper cover.
The acceleration sensor also comprises a locking nut and an insulating sheet; the insulation sheet is sleeved on the central shaft of the bracket and is arranged on the mass block; the locking nut is in threaded connection with the central shaft of the support.
The mass block is provided with a sinking groove, and the locking nut and the insulating sheet are matched in the sinking groove.
The single-core aviation plug further comprises an insulating sleeve, and the aviation plug core body is inserted into the insulating sleeve and fixed on the aviation plug shell through the insulating sleeve.
The bottom of the bracket is provided with a counter bore.
After the scheme is adopted, the utility model conducts the positive output end of the piezoelectric device with the mass block and conducts the negative output end of the piezoelectric device with the outer shell; therefore, the aviation plug core body of the single-core aviation plug can be connected to the top of the mass block through a signal wire, and the aviation plug shell of the single-core aviation plug is directly communicated with the outer shell; thereby realizing the communication between the single-core aviation plug and the piezoelectric device; therefore, the situation that a signal wire is arranged in a gap between the mass block and the outer shell and is used for communicating the single-core aerial plug and the piezoelectric device at the upper end and the lower end of the mass block is avoided, and the assembling difficulty of the acceleration sensor is greatly reduced.
In addition, in the prior art, a longer signal line is easy to shake, so that the noise of electric signal transmission is increased, and the performance of the acceleration sensor is unstable; even, the longer signal line may collide with the mass block and the outer shell, so that the insulation layer is damaged and a fault is caused, and the structural reliability is poor; the signal wire in the utility model only needs to connect the adjacent aviation plug core body and the mass block, thereby greatly shortening the length of the signal wire, having a shorter signal wire structure which is stable and not easy to shake, and reducing the noise of electric signal transmission, thereby ensuring the stable performance of the acceleration sensor; and, can avoid signal line and other structure collisions, lead to the insulating layer to damage, cause the trouble, its structural reliability is good.
Drawings
Fig. 1 is a sectional view of the preferred embodiment of the present invention.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1, a preferred embodiment of the push-out wire type high-temperature piezoelectric acceleration sensor of the present invention includes a single-core aviation plug 1, a signal wire 2, a mass block 3, a piezoelectric device 4, an outer shell 5, and a bracket 6 having a central shaft 61; the piezoelectric device 4 is sleeved on the central shaft 61 of the bracket 6 and is provided with a positive output end and a negative output end, and the negative output end is communicated with the bracket 6; the mass block 3 is sleeved on the central shaft 61 and pressed against the piezoelectric device 4, and is also conducted with the positive output end of the piezoelectric device 4; the bottom of the outer shell 5 is connected to the bracket 6 and is communicated with the bracket 6, and the top end of the outer shell is provided with a through hole 51; the single-core aviation plug 1 comprises an aviation plug shell 11 and an aviation plug core body 12 which are insulated from each other; the single-core aviation plug 1 is installed in the through hole 51, wherein the aviation plug shell 11 is communicated with the outer shell 5, and the aviation plug core body 12 is communicated to the top of the mass block 3 through the signal wire 2.
It should be noted that, above-mentioned piezoelectric device 4 is formed by a plurality of piezoelectricity original paper stacks, and every piezoelectric device all has positive negative pole, piles up through positive and negative two sides is crisscross, and the centre utilizes 2 electrodes to draw positive and negative signal, is positive output and the negative output of piezoelectric device 4 promptly, and this is acceleration sensor medium voltage electric device's conventional design, and not the utility model discloses an important part no longer expands here and gives unnecessary details.
During assembly, the piezoelectric device 4 is firstly installed on the central shaft 61 of the bracket 6, and at the moment, the negative output end of the piezoelectric device 4 is communicated with the bracket 6; thereafter, the mass block 3 is mounted on the central shaft 61 and pressed against the piezoelectric device 4 while being in conduction with the positive output terminal of the piezoelectric device 4; then, one end of the signal wire 2 is fixed on the top of the mass block 3, and the other end of the signal wire passes through a through hole 51 at the top end of the outer shell 5 and is connected to the aviation plug core body 12 of the single-core aviation plug 1; then, the outer shell 5 is arranged on the bracket 6 and is communicated with the bracket 6; finally, the single-core aerial plug 1 is installed in the through hole 51 of the outer shell 5, and the aerial plug shell 11 is communicated with the outer shell 5; thus, the acceleration sensor can be assembled.
The utility model is characterized in that the positive output end of the piezoelectric device 4 is conducted with the mass block 3, and the negative output end of the piezoelectric device 4 is conducted with the outer shell 5; therefore, the aviation plug core body 12 of the single-core aviation plug 1 can be connected to the top of the mass block 3 through the signal wire 2, and the aviation plug shell body 11 of the single-core aviation plug 1 is directly communicated with the outer shell body 5; further realizing the communication between the single-core aviation plug 1 and the piezoelectric device 4; therefore, the situation that the signal wire 2 is arranged in a gap between the mass block 3 and the outer shell 5 and used for communicating the single-core aerial plug 1 and the piezoelectric device 4 at the upper end and the lower end of the mass block 3 is avoided, and the assembling difficulty of the acceleration sensor is greatly reduced.
In addition, in the prior art, the longer signal line 2 is easy to shake, which increases the noise of electric signal transmission, resulting in unstable performance of the acceleration sensor; even, the longer signal line 2 may collide with the mass block 3 and the outer case 5, resulting in damage to the insulating layer, causing malfunction, and poor structural reliability; the signal wire 2 in the utility model only needs to connect the adjacent aviation plug core body 12 and the mass block 3, the length of the signal wire 2 is greatly shortened, the shorter signal wire 2 has stable structure and is not easy to shake, and the noise of electric signal transmission can be reduced, thereby ensuring the stable performance of the acceleration sensor; moreover, the signal wire 2 can be prevented from colliding with other structural components, so that the insulating layer is damaged and faults are caused, and the structural reliability is good.
The outer case 5 includes a case main body 52 and an upper cover 53; one end of the case main body 52 is connected to the bracket 6, and the upper cover 53 is detachably fitted to the other end of the case main body 52; the through hole 51 is provided on the upper cover 53. The utility model discloses an outer casing 5 is through being equipped with shell main part 52 and upper cover 53 to set up through-hole 51 on upper cover 53, when the installation, can insert 1 with single core aviation earlier and install on upper cover 53, later fix the both ends of signal line 2 respectively on aviation insertion core body 12 and quality piece 3, install upper cover 53 on shell main part 52 again at last, thereby avoid signal line 2 to need to run through shell main part 5, further reduction acceleration sensor's the equipment degree of difficulty.
The acceleration sensor further comprises a lock nut 7 and an insulating sheet 8; the insulation sheet 8 is sleeved on the central shaft 61 of the bracket 6 and is arranged on the mass block 3; the locking nut 7 is screwed with the central shaft 61 of the bracket 6. When the piezoelectric device is installed, the piezoelectric device 4, the mass block 3 and the insulating sheet 8 are sequentially sleeved on the central shaft 61 of the support 6, and finally the locking nut 7 is locked on the central shaft 61, so that the piezoelectric device 4, the mass block 3 and the insulating sheet 8 are sleeved and fixed on the support 6.
The mass block 3 is provided with a sinking groove 31, and the locking nut 7 and the insulating sheet 8 are both matched in the sinking groove 31. Therefore, the locking nut 7 can be prevented from being higher than the upper surface of the mass block 3, so that the gap between the mass block 3 and the single-core aviation plug 1 is kept free from other structural parts, namely, the signal wire 2 between the mass block 3 and the single-core aviation plug 1 is not interfered and interfered by other structural parts, and the assembling difficulty of the acceleration sensor is further reduced; meanwhile, the signal wire 2 can be prevented from colliding with other structural components, so that the insulating layer is damaged and faults are caused, and the structural reliability of the cable is further improved.
The single-core aviation plug 1 further comprises an insulating sleeve 13, and the aviation plug core body 12 is inserted into the insulating sleeve 13 and is fixed on the aviation plug shell 11 through the insulating sleeve 13.
The bottom of the bracket 6 is provided with a counter bore 62. The acceleration sensor is mounted on the device being tested through the counterbore 62.
The foregoing description of the specific exemplary embodiments of the invention has been presented for the purposes of illustration and description and is not intended to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application, to thereby enable others skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as may be suited to the particular use contemplated and contemplated by those skilled in the art without departing from the scope of the invention.
Claims (6)
1. The utility model provides a push out line formula high temperature piezoelectricity acceleration sensor which characterized in that: the single-core aerial plug comprises a single-core aerial plug, a signal wire, a mass block, a piezoelectric device, an outer shell and a bracket provided with a central shaft; the piezoelectric device is sleeved on the central shaft of the bracket and is provided with a positive output end and a negative output end, and the negative output end of the piezoelectric device is communicated with the bracket; the mass block is sleeved on the central shaft, is pressed on the piezoelectric device and is also conducted with the positive output end of the piezoelectric device; the bottom of the outer shell is connected to the bracket and communicated with the bracket, and meanwhile, the top end of the outer shell is provided with a through hole; the single-core aerial plug comprises an aerial plug shell and an aerial plug core body which are insulated from each other; the single-core aerial plug is installed in the through hole, wherein the aerial plug shell is communicated with the outer shell, and the aerial plug core body is communicated to the top of the mass block through a signal line.
2. The push-out wire type high temperature piezoelectric acceleration sensor according to claim 1, characterized in that: the outer shell comprises a shell main body and an upper cover; one end of the shell main body is connected to the support, and the upper cover is detachably matched with the other end of the shell main body; the through hole is arranged on the upper cover.
3. The push-out wire type high temperature piezoelectric acceleration sensor according to claim 1, characterized in that: the acceleration sensor also comprises a locking nut and an insulating sheet; the insulation sheet is sleeved on the central shaft of the bracket and is arranged on the mass block; the locking nut is in threaded connection with the central shaft of the support.
4. A push-out wire type high temperature piezoelectric acceleration sensor according to claim 3, characterized in that: the mass block is provided with a sinking groove, and the locking nut and the insulating sheet are matched in the sinking groove.
5. The push-out wire type high temperature piezoelectric acceleration sensor according to claim 1, characterized in that: the single-core aviation plug further comprises an insulating sleeve, and the aviation plug core body is inserted into the insulating sleeve and fixed on the aviation plug shell through the insulating sleeve.
6. The push-out wire type high temperature piezoelectric acceleration sensor according to claim 1, characterized in that: the bottom of the bracket is provided with a counter bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020725196.1U CN212514647U (en) | 2020-05-06 | 2020-05-06 | Push-out line type high-temperature piezoelectric acceleration sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020725196.1U CN212514647U (en) | 2020-05-06 | 2020-05-06 | Push-out line type high-temperature piezoelectric acceleration sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212514647U true CN212514647U (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020725196.1U Active CN212514647U (en) | 2020-05-06 | 2020-05-06 | Push-out line type high-temperature piezoelectric acceleration sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212514647U (en) |
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2020
- 2020-05-06 CN CN202020725196.1U patent/CN212514647U/en active Active
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