CN207704529U - Sensor fixing structure and finance device - Google Patents

Sensor fixing structure and finance device Download PDF

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Publication number
CN207704529U
CN207704529U CN201721637206.0U CN201721637206U CN207704529U CN 207704529 U CN207704529 U CN 207704529U CN 201721637206 U CN201721637206 U CN 201721637206U CN 207704529 U CN207704529 U CN 207704529U
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CN
China
Prior art keywords
sensor
elastic
fixing structure
elastic buckle
frame
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
CN201721637206.0U
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Chinese (zh)
Inventor
龙腾敏
谭元锦
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.)
Shenzhen Yihua Computer Co Ltd
Shenzhen Yihua Time Technology Co Ltd
Shenzhen Yihua Financial Intelligent Research Institute
Original Assignee
Shenzhen Yihua Computer Co Ltd
Shenzhen Yihua Time Technology Co Ltd
Shenzhen Yihua Financial Intelligent Research Institute
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.)
Filing date
Publication date
Application filed by Shenzhen Yihua Computer Co Ltd, Shenzhen Yihua Time Technology Co Ltd, Shenzhen Yihua Financial Intelligent Research Institute filed Critical Shenzhen Yihua Computer Co Ltd
Priority to CN201721637206.0U priority Critical patent/CN207704529U/en
Application granted granted Critical
Publication of CN207704529U publication Critical patent/CN207704529U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a kind of sensor fixing structure and finance device, belong to financial equipment field, including sensor frame, the sensor signal end in the sensor frame, the Elastic buckle in the sensor frame, for the end receiving hole in function module and for accommodating the sensor signal end and the card hole for being clamped in the function module and with the Elastic buckle.Sensor fixing structure and finance device provided by the utility model reduce the difficulty of processing of Elastic buckle, so that the dimensional accuracy of Elastic buckle processing is more prone to grasp, it processes pore structure in function module to be also easier, the difficulty of processing of whole clamping structure reduces;Simultaneously as Elastic buckle is arranged in sensor frame, Elastic buckle can be made easily to be detached from card hole during dismounting, improve the convenience of operation, moreover it is possible to effective the phenomenon that avoiding buckle from being broken, extend the service life of clamping structure entirety.

Description

Sensor fixing structure and finance device
Technical field
The utility model belongs to financial equipment technology field, more specifically, be related to a kind of sensor fixing structure and Include the finance device of the sensor fixing structure.
Background technology
Finance device is related to the processing of cash and bill, and sensor can generally be arranged in each function module to complete The sensing of bank note or bill is needed.Existing sensor fixing structure is usually used and stuck point is arranged in sensors sides, The buckle of protrusion is set in function module, realizes fixation by the way that stuck point to be clamped with buckle, during dismounting, stirs card The operating difficulties of button is susceptible to stuck point hardness and blocks the phenomenon that buckle causes buckle to be broken, and the buckle of fracture is fallen into equipment Portion also causes difficulty to subsequent processing;Also, the buckle difficulty that protrusion is processed in function module is larger, is susceptible to ruler Very little error causes sensor to be easy to loosen after mounting, influences to work normally.
Utility model content
The purpose of this utility model is to provide a kind of sensor fixing structures, to solve tradition existing in the prior art Sensor clamping structure be easy to be broken in use, and the technical problem that difficulty of processing is big.
To achieve the above object, the technical solution adopted in the utility model is:A kind of sensor fixing structure is provided, is wrapped It includes:Sensor frame, the sensor signal end in the sensor frame, the elasticity in the sensor frame It buckles, on function module mounting wall and for accommodating the end receiving hole of the sensor signal end and for setting In the card hole being clamped on the function module mounting wall and with the Elastic buckle.
Further, the Elastic buckle is respectively positioned on the same of the sensor frame with the sensor signal end Side.
Further, there are two Elastic buckle tools, and two Elastic buckle mirror symmetries be set to the biography On the same side of sensor frame.
Further, each Elastic buckle includes the elastic plate being connect with the sensor frame and is set to described Clamping boss in elastic plate outer plate surface;On the distribution arrangement for being parallel to two Elastic buckles, the width of the card hole The outer peripheral spacing of the clamping boss described less than two, and the width of the card hole is more than the outer plate surface of two elastic plates Spacing.
Further, the outside of the clamping boss is equipped with guiding surface.
Further, the sensor fixing structure further include for the function module mounting wall be parallel to it is described Elastic buckle clamping direction direction on be slidably connected be slidably connected frame and set on it is described be slidably connected on frame and for The sliding for the frame that is slidably connected abuts with the guiding surface and keeps the free end of two Elastic buckles mutual respectively At least two close dismounting blocks.
Further, the frame that is slidably connected includes at least two cunnings on the function module mounting wall Hole is slidably connected at least through the slide opening and with the slide opening on the direction for being parallel to Elastic buckle clamping direction Two guide plates, set on described guide plate one end and for the limit protrusion that is abutted with the function module and both ends respectively with extremely The support plate of the other end connection of few two guide plates, the dismounting block are set in the support plate.
Further, there are one the Elastic buckle is set.
Further, the Elastic buckle include the fixed column being connect with the sensor frame and surround the fixed column Multiple elastic clipping strips of axis distribution, one end of the elastic clipping strip are connect with the free end of the fixed column, the elastic card The free end of item is towards the sensor frame, and in a free state, the maximum spacing of the elastic clipping strip free end is more than institute State the maximum spacing of elastic clipping strip and the end of the fixed column.
The advantageous effect of sensor fixing structure provided by the utility model is:Compared with prior art, this practicality is new Type sensor fixing structure processes Elastic buckle in sensor frame, and processes card hole in function module, reduces elasticity The difficulty of processing of buckle so that the dimensional accuracy of Elastic buckle processing is more prone to grasp, and pore structure is processed in function module It is easier, the difficulty of processing of whole clamping structure reduces;Simultaneously as Elastic buckle is set in sensor frame, Elastic buckle can be made easily to be detached from card hole during dismounting, improve the convenience of operation, moreover it is possible to effectively avoid buckling The phenomenon that fracture, occurs, and extends the service life of clamping structure entirety.
The utility model also provides a kind of finance device, including above-mentioned sensor fixing structure.
The advantageous effect of finance device provided by the utility model is:Compared with prior art, the utility model finance Equipment, sensor fixing structure simple by using above-mentioned processing and with long service life, in the premise for ensureing stability in use Under, the efficiency of replacing sensor can be effectively improved, maintenance cost is reduced.
Description of the drawings
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this practicality is new Some embodiments of type for those of ordinary skill in the art without having to pay creative labor, can be with Obtain other attached drawings according to these attached drawings.
Fig. 1 is the dress of sensor frame, sensor signal end and Elastic buckle that the utility model embodiment one uses Distribution structure schematic diagram;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is the side structure schematic view for the sensor fixing structure that the utility model embodiment one provides;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the assembling structure schematic diagram of the end receiving hole that the utility model embodiment one uses and card hole;
Fig. 6 is the usage state diagram one for the sensor fixing structure that the utility model embodiment two provides;
Fig. 7 is the usage state diagram two for the sensor fixing structure that the utility model embodiment two provides;
Fig. 8 is the vertical view of Fig. 6;
Fig. 9 is the dress of sensor frame, sensor signal end and Elastic buckle that the utility model embodiment three uses Distribution structure schematic diagram;
Figure 10 is the vertical view of Fig. 9;
Figure 11 is the assembling structure schematic diagram of the end receiving hole that the utility model embodiment three uses and card hole.
Wherein, each reference numeral in figure:
1- sensor frames;2- sensor signals end;3- Elastic buckles;301- elastic plates;302- is clamped boss;303- Guiding surface;304- fixed columns;305- elastic clipping strips;4- function module mounting walls;The ends 5- receiving hole;6- card holes;7- lines Port;8- is slidably connected frame;801- slide openings;802- guide plates;803- limit protrusions;804- support plates;9- dismantles block
Specific implementation mode
In order to make technical problem to be solved in the utility model, technical solution and advantageous effect be more clearly understood, with Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein It applies example to be only used to explain the utility model, is not used to limit the utility model.
It should be noted that when element is referred to as " being fixed on " or " being set to " another element, it can be directly another On one element or it is connected on another element.When an element is known as " being connected to " another element, it can To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on ... shown in the drawings or position are closed System, is merely for convenience of describing the present invention and simplifying the description, does not indicate or imply the indicated device or element is necessary With specific orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more this feature." multiple ", " several " are meant that two in the description of the present invention, It is a or more than two, unless otherwise specifically defined.
Also referring to Fig. 3, Fig. 4, Fig. 7 and Fig. 8, now sensor fixing structure provided by the utility model is said It is bright.The sensor fixing structure, including sensor frame 1, the sensor signal end 2 in sensor frame 1, be set to Elastic buckle 3 in sensor frame 1, on function module mounting wall 4 and for accommodating sensor signal end 2 End receiving hole 5 and on function module mounting wall 4 and with Elastic buckle 3 be clamped card hole 6.
Clamping structure is that the elastic deformation by being buckled in during being clamped and the rebound after clamping in place are realized With the clamping of pore structure or other bulge-structures.After present embodiment, when installation, by sensor signal end 2 alignment end receiving holes 5, are directed at card hole 6, during clamping, sensor signal end 2 is gradually stretched by Elastic buckle 3 End receiving hole 5, Elastic buckle 3 gradually stretch into card hole 6, and Elastic buckle 3 can be occurred elastic deformation by the extruding of card hole, stretch Enter in place the clamping realized afterwards with card hole 6;When dismounting, pressing or extruding Elastic buckle 3 can be such that Elastic buckle 3 is detached from Card hole 6.This structure realizes the clamping of sensor and function module, and energy sound construction, is not easy to loosen after installation.
Sensor fixing structure provided by the utility model processes elasticity in sensor frame compared with prior art Buckle 3, and card hole is processed on function module mounting wall 4, reduce the difficulty of processing of Elastic buckle 3 so that Elastic buckle 3 adds The dimensional accuracy of work is more prone to grasp, and pore structure is processed in function module and is also easier, the difficult processing of whole clamping structure Degree reduces;Simultaneously as Elastic buckle 3 is arranged in sensor frame 1, Elastic buckle can be made convenient during dismounting Disengaging card hole, improve the convenience of operation, moreover it is possible to effective the phenomenon that avoiding buckle from being broken, extend clamping structure Whole service life.
Specifically, Elastic buckle 3 is wholely set with sensor frame 1, and processing is simple, and machining accuracy is more prone to control.
Further, refering to fig. 1, Fig. 2, Fig. 6, Fig. 7 and Fig. 9, as sensor fixing structure provided by the utility model A kind of specific implementation mode, the end of sensor frame 1 is additionally provided with connection end 7.The main part of sensor is set to biography Within sensor frame 1, sensor frame 1 is stretched out in the sensor signal end 2 of sensor, is believed with realizing transmitting signal or receiving Number, external circuit is electrically connected by connection end 7 with the realization of the main part of sensor, and overall structure simple and compact is convenient for Elastic buckle 3 is set so that sensor frame 1 can not only protect the main part of sensor, moreover it is possible to it is convenient carry out wiring or Sensor is set to realize receiving and transmitting signal.
Further, refering to fig. 1 to Fig. 4 and Fig. 6 to Figure 10, as sensor fixing structure provided by the utility model A kind of specific implementation mode, more convenient to install in order to simplify structure, Elastic buckle 3 is respectively positioned on biography with sensor signal end 2 The same side of sensor frame 1.When installation, as soon as only sensor frame 1 need to be promoted to direction, sensing can be realized simultaneously The insertion of device signal end 2 and the insertion of Elastic buckle 3, effectively increase installation effectiveness.
Specifically, refering to fig. 1 to Fig. 4 and Fig. 6 to Fig. 8, one as sensor fixing structure provided by the utility model Kind of specific implementation mode, there are two the tools of Elastic buckle 3, and two 3 mirror symmetries of Elastic buckle be set to the same of sensor frame 1 On one side.Two Elastic buckles 3 are clamped with the both sides of card hole 6 respectively, and structure is more secured after clamping, are fallen off after avoiding clamping The phenomenon that occur.
Specifically, it please refers to Fig.1 to Fig.4 and Fig. 6 to Fig. 8, as sensor fixing structure provided by the utility model A kind of specific implementation mode, each Elastic buckle 3 include the elastic plate 301 being connect with sensor frame 1 and be set to elastic plate Clamping boss 302 in 301 outer plate surfaces;On the distribution arrangement for being parallel to two Elastic buckles 3, the width of card hole 6 is less than two The outer peripheral spacing of a clamping boss 302, and the width of card hole 6 is more than the spacing of the outer plate surface of two elastic plates 301.In card When connecing, clamping boss 302 is contacted with card hole 6 first, and with stretching into for clamping boss 302, two clamping boss 302 are in card hole 6 It is gradually close to each other under the extruding of side wall, while elastic deformation also occurs for two elastic plates 301, after clamping in place, two Elastic plate 301 drives two clamping boss 302 to be restored to free state respectively, realizes clamping;When needing dismounting, finger Two clamping boss 302 are inwardly squeezed simultaneously, so that Elastic buckle 3 is released the state of clamping, then extract sensor frame 1. The Elastic buckle 3 is simple in structure, easy to use, can effectively avoid buckling the case where being broken in disassembly process, effectively carry The service life of height buckle.
Specifically, Fig. 4 and Fig. 5 is please referred to, a kind of specific reality as sensor fixing structure provided by the utility model Mode is applied, for convenience the clamping of above-mentioned Elastic buckle 3, card hole 6 is rectangular opening.Perpendicular to two 3 sides of distribution of Elastic buckle To direction on, the width of card hole 6 is slightly larger than the maximum width of Elastic buckle 3.
Further, it please refers to Fig.1 to Fig.4 and Fig. 6 to Fig. 8, as sensor fixing structure provided by the utility model A kind of specific implementation mode, clamping boss 302 outside be equipped with guiding surface 303.By taking the visual angles Fig. 2 as an example, two are oriented to tiltedly Face 303 mirror symmetry setting, and the free end of the spacing own elasticity plate 301 of two guiding surfaces 303 to elastic plate 301 and senses The end that device frame 1 connects gradually increases, and when clamping, makes clamping boss 302 be easier to be inserted into card hole 6, improves installation Efficiency.
Further, refering to Fig. 6 to Fig. 8, a kind of specific reality as sensor fixing structure provided by the utility model Apply mode, sensor fixing structure further include for function module mounting wall 4 in the side for being parallel to Elastic buckle 3 and being clamped direction The frame 8 and set on being slidably connected on frame 8 and for distinguishing with the sliding for the frame 8 that is slidably connected of being slidably connected of upward sliding connection At least two dismounting blocks 9 for being abutted with guiding surface 303 and keeping the free end of two Elastic buckles 3 close to each other.By pressing Be slidably connected frame 8, drives dismounting block 9 to be abutted with two Elastic buckles 3, and then two Elastic buckles 3 can be made to be detached from card hole 6 The state of clamping, without directly squeezing two Elastic buckles 3, more convenient to use, removal efficiency higher with hand.
Further, Fig. 6 to Fig. 8 is please referred to, one kind as sensor fixing structure provided by the utility model is specific Embodiment, the frame 8 that is slidably connected include on function module mounting wall 4 at least two slide openings 801, run through slide opening 801 and with slide opening 801 be parallel to Elastic buckle 3 be clamped direction direction on be slidably connected at least two guide plates 802, set It is led respectively at least two in 802 one end of guide plate and for the limit protrusion 803 that is abutted with function module mounting wall 4 and both ends The support plate 804 connected to the other end of plate 802, dismounting block 9 are set in support plate 804.The plate face of guide plate 802 is perpendicular to branch The limit by limit protrusion 803 and support plate 804 of the plate face of fagging 804, guide plate 802 can only be in length range Interior sliding, after the insertion of Elastic buckle 3, Elastic buckle 3 pushes dismounting block 9 to the mounting wall far from function module mounting wall 4 Direction is moved, and the progress of clamping is not influenced.Be slidably connected frame 8 structure it is simple, occupy little space, the effect of dismounting can be effectively improved Rate.
Further, refering to Fig. 9 and Figure 10, a kind of specific reality as sensor fixing structure provided by the utility model Mode is applied, there are one Elastic buckle 3 is set, the space occupied smaller also helps reduction difficulty of processing.
Further, referring to Fig. 5, a kind of specific embodiment party as sensor fixing structure provided by the utility model Formula, Elastic buckle 3 include the fixed column 304 being connect with sensor frame 1 and multiple elasticity for being distributed around 304 axis of fixed column One end of strip 305, elastic clipping strip 305 is connect with the free end of fixed column 304, the free end direction sensing of elastic clipping strip 305 Device frame 1, in a free state, the maximum spacing of 305 free end of elastic clipping strip are more than elastic clipping strip 305 and fixed column 304 The maximum spacing of end.When clamping, elastic clipping strip 305 is contacted with card hole 6 first, and elastic clipping strip 305 is by card hole 6 The extruding of wall, free end are gradually collapsed to fixed column 304, and after being clamped in place, the free end of elastic clipping strip 305, which is upheld, to be resetted, Function module mounting wall 4 is stuck between elastic clipping strip 305 and sensor frame 1, and then realizes clamping, which occupies Space is small, simple in structure, more convenient to use.
Specifically, referring to Fig. 5, a kind of specific embodiment party as sensor fixing structure provided by the utility model Formula, there are four the tools of elastic clipping strip 305, and is uniformly distributed around 304 axis of fixed column, makes 305 distribution of force of elastic clipping strip more Uniformly, the phenomenon that preventing elastic clipping strip 305 to be broken, while can also preventing from swinging after being clamped.
Specifically, 1 is please referred to Fig.1, a kind of specific embodiment party as sensor fixing structure provided by the utility model Formula, in order to be adapted to above-mentioned Elastic buckle 3, card hole 6 is circular hole.The aperture of card hole 6 is more than the outer diameter of fixed column 304, but is less than The maximum spacing of 305 free end of elastic clipping strip, to ensure the validity of clamping.
Sensor fixing structure provided by the utility model realizes the clamping of sensor and function module, can be tied after installation Structure is secured, is not easy to loosen;Elastic buckle 3 is processed in sensor frame, and processes card hole on function module mounting wall 4, is dropped The low difficulty of processing of Elastic buckle 3 so that the dimensional accuracy that Elastic buckle 3 is processed is more prone to grasp, in function module plus Work pore structure is also easier, and the difficulty of processing of whole clamping structure reduces;Simultaneously as being arranged in sensor frame 1 Elastic buckle 3 can make Elastic buckle easily be detached from card hole during dismounting, improve the convenience of operation, moreover it is possible to have The phenomenon that avoiding buckle from being broken of effect, extends the service life of clamping structure entirety;Also, Elastic buckle 3 occupies sky Between it is small, overall structure is compacter.
The utility model also provides a kind of finance device, and the finance device includes above-mentioned sensor fixing structure.
Finance device provided by the utility model, sensor installation simple by using above-mentioned processing and with long service life Structure can effectively improve the efficiency of replacing sensor under the premise of ensureing stability in use, reduce maintenance cost.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model Protection domain within.

Claims (10)

1. sensor fixing structure, it is characterised in that:Sensor letter including sensor frame, in the sensor frame It is number end, the Elastic buckle in the sensor frame, for being set on function module mounting wall and described for accommodating The end receiving hole of sensor signal end and for be set to the function module mounting wall on and with the Elastic buckle be clamped Card hole.
2. sensor fixing structure as described in claim 1, it is characterised in that:The Elastic buckle and the sensor signal End is respectively positioned on the same side of the sensor frame.
3. sensor fixing structure as claimed in claim 2, it is characterised in that:There are two the Elastic buckle tools, and two It is set on the same side of the sensor frame to the Elastic buckle mirror symmetry.
4. sensor fixing structure as claimed in claim 3, it is characterised in that:Each Elastic buckle include with it is described The elastic plate and the clamping boss in the elastic plate outer plate surface of sensor frame connection;It is being parallel to two elasticity On the distribution arrangement of buckle, the width of the card hole is less than the outer peripheral spacing of two clamping boss, and the card hole Width be more than two elastic plates outer plate surface spacing.
5. sensor fixing structure as claimed in claim 4, it is characterised in that:The outside of the clamping boss, which is equipped with, to be oriented to tiltedly Face.
6. sensor fixing structure as claimed in claim 5, it is characterised in that:The sensor fixing structure further includes being used for The frame that is slidably connected being slidably connected on the direction for being parallel to Elastic buckle clamping direction with the function module mounting wall And it is slidably connected on frame and set on described for being abutted respectively with the guiding surface with the sliding of the frame that is slidably connected And at least two dismounting blocks for keeping the free end of two Elastic buckles close to each other.
7. sensor fixing structure as claimed in claim 6, it is characterised in that:The frame that is slidably connected includes for being set to institute It states at least two slide openings on function module mounting wall, be parallel to the Elastic buckle through the slide opening and with the slide opening At least two guide plates being slidably connected on the direction in direction are clamped, described guide plate one end is set to and is used for and the function mould The support plate that the limit protrusion and both ends that mounting wall block abuts are connect with the other end of at least two guide plates respectively, it is described Block is dismantled to be set in the support plate.
8. sensor fixing structure as claimed in claim 2, it is characterised in that:There are one the Elastic buckle is set.
9. sensor fixing structure as claimed in claim 8, it is characterised in that:The Elastic buckle includes and the sensor The fixed column of frame connection and the multiple elastic clipping strips being distributed around the fixed column axis, one end of the elastic clipping strip and institute The free end connection of fixed column is stated, the free end of the elastic clipping strip is in a free state, described towards the sensor frame The maximum spacing of elastic clipping strip free end is more than the maximum spacing of the elastic clipping strip and the end of the fixed column.
10. finance device, it is characterised in that:It include the sensor fixing structure as described in any one of claim 1-9.
CN201721637206.0U 2017-11-29 2017-11-29 Sensor fixing structure and finance device Expired - Fee Related CN207704529U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721637206.0U CN207704529U (en) 2017-11-29 2017-11-29 Sensor fixing structure and finance device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721637206.0U CN207704529U (en) 2017-11-29 2017-11-29 Sensor fixing structure and finance device

Publications (1)

Publication Number Publication Date
CN207704529U true CN207704529U (en) 2018-08-07

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CN201721637206.0U Expired - Fee Related CN207704529U (en) 2017-11-29 2017-11-29 Sensor fixing structure and finance device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107833357A (en) * 2017-11-29 2018-03-23 深圳怡化电脑股份有限公司 Sensor fixing structure and finance device
CN112413231A (en) * 2020-11-12 2021-02-26 刘伟 End cover fixing seat, end cover and pre-embedding process of beam/wall penetrating pipe fitting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107833357A (en) * 2017-11-29 2018-03-23 深圳怡化电脑股份有限公司 Sensor fixing structure and finance device
CN112413231A (en) * 2020-11-12 2021-02-26 刘伟 End cover fixing seat, end cover and pre-embedding process of beam/wall penetrating pipe fitting

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