CN217561694U

CN217561694U - Detection device

Info

Publication number: CN217561694U
Application number: CN202123214307.6U
Authority: CN
Inventors: 周雪斌; 欧阳竹成; 魏文城
Original assignee: Sunwoda Electronic Co Ltd
Current assignee: Sunwoda Electronic Co Ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-10-11
Anticipated expiration: 2031-12-20

Abstract

The application discloses a detection device, which comprises a shell, a sliding part and an elastic part, wherein a first limiting structure is arranged on the shell; a slider slidably mounted within the housing and having an initial position and a detection position; one end of the sliding piece extends to the outside of the shell; the sliding part is provided with a second limiting structure which can be matched with the first limiting structure; the elastic piece is arranged between the sliding piece and the shell and used for assisting the sliding piece to move from the detection position to the initial position; when the sliding piece slides from the initial position to the detection position, the elastic piece deforms, the deformation amount of the elastic piece is in direct proportion to the sliding distance of the sliding piece, and therefore the first limiting structure is matched with the second limiting structure, and the stability and accuracy of the detection result are improved.

Description

Detection device

Technical Field

The application relates to the field of auxiliary detection equipment, in particular to a detection device.

Background

In the welding process of the button cell, the tab is frequently welded in a cold joint at the welding position of the tab and the cell, so that the tab is prone to loosening or falling off. In order to detect whether the welding position of the battery cell and the tab is subjected to cold joint, the tab is pushed by using tools such as tweezers manually at present, so that whether the cold joint exists at the welding position of the tab and the battery cell is judged.

However, the method of pushing the tab with tools such as tweezers cannot keep the same magnitude of the pushing force during each detection, so that the stability and accuracy of the detection result cannot be guaranteed.

Disclosure of Invention

The application provides a detection device, which can basically keep the acting force applied in each detection to be unchanged, thereby improving the stability and accuracy of the detection result.

In order to solve the above technical problem, an embodiment of the present application discloses a detection device, including a housing, a sliding member, and an elastic member; the shell is provided with a first limiting structure; a slider slidably mounted within the housing and having an initial position and a detection position; one end of the sliding piece extends to the outside of the shell; the sliding part is provided with a second limiting structure which can be matched with the first limiting structure; the elastic piece is arranged between the sliding piece and the shell and used for assisting the sliding piece to move from the detection position to the initial position; when the sliding part slides from the initial position to the detection position, the elastic part deforms, the deformation amount of the elastic part is in direct proportion to the sliding distance of the sliding part, and therefore the first limiting structure is matched with the second limiting structure.

Optionally, the first limit structure comprises a stopper, and the stopper is connected to the inner wall of the housing; the second limiting structure comprises a protrusion, the protrusion is arranged on the side wall of the sliding part, and when the sliding part slides from the initial position to the detection position, the protrusion abuts against the stop block.

Optionally, the first limiting structure comprises a locking assembly, and the locking assembly comprises a plunger, a crimping piece and an elastic compression piece; the plunger is embedded in the side wall of the shell; the central axis of the plunger is perpendicular to the central line of the sliding piece; the plunger is provided with an adjusting cavity from the end surface close to the sliding part in a concave manner; the crimping piece comprises a first part embedded into the adjusting cavity and a second part protruding from the adjusting cavity; the elastic compression piece is arranged between the first part and the bottom wall of the adjusting cavity and used for pushing the compression joint piece, so that the second part protrudes out of the inner side wall of the shell.

Optionally, the first limiting structure comprises a locking assembly, and the locking assembly comprises a stepped hole, a plunger and an elastic adjusting piece; the stepped hole penetrates through the side wall of the shell, and the central axis of the stepped hole is perpendicular to the central line of the sliding piece; the stepped bore includes a first bore and a second bore communicating to the housing; forming an annular step at the junction of the first and second holes; a plunger is slidably mounted to the stepped bore; the plunger comprises a limiting flange protruding out of the side wall and an arc-shaped surface protruding out of the end face, and the limiting flange can be embedded into the first hole in a sliding mode; the elastic adjusting piece is arranged between the limiting flange and the annular ladder and used for supporting the plunger, so that the arc-shaped surface protrudes out of the inner side wall of the shell.

Optionally, the detection device further includes a displacement sensor disposed on the housing for detecting a sliding distance of the sliding member.

Optionally, the detection device further includes a force sensor connected to the elastic member for detecting an acting force between the sliding member and the member to be detected.

Optionally, the sliding member includes a first rod and a second rod; one end of the first rod body is inserted into the shell, and the other end of the first rod body extends out of the shell; one end of the second rod body is inserted into the shell and is abutted against one end of the first rod body, and the other end of the second rod body extends out of the shell.

Optionally, the second limiting structure comprises a first limiting plate and a second limiting plate which are detachably connected; either one of the first and second limit plates is fixed to an end of the first rod, and the other is fixed to an end of the second rod.

Optionally, the housing includes a cavity, the first limiting plate and the second limiting plate are both located in the cavity, and the elastic member is located between the second limiting plate and the cavity; the first limiting structure comprises a positioning piece, and the positioning piece is arranged on the inner wall of the cavity; when the sliding piece slides from the initial position to the detection position, the elastic piece deforms, and the second limit plate abuts against the positioning piece.

Optionally, the sliding member includes at least one tangent plane, and the tangent plane is formed along an inclined direction from a center of an end surface of the sliding member to a side wall thereof.

One of the above technical solutions has the following advantages or beneficial effects: when applying the effort to the piece that awaits measuring, above-mentioned elastic component can take place elastic deformation, and the deformation volume of elastic component is directly proportional with the sliding distance of slider, make first limit structure and the cooperation of second limit structure, therefore the deformation volume of sliding distance or elastic component through the restriction slider, first limit structure cooperates with supplementary spacing with second limit structure simultaneously, thereby can restrict the size of the effort that the slider was applyed for the piece that awaits measuring, with this effort that detection device was used in the piece that awaits measuring when guaranteeing to examine at every turn keeps unanimous basically, thereby improve the accuracy and the stability of inspection result.

Another technical scheme in the above technical scheme has the following advantages or beneficial effects: and the pressure applied to the piece to be tested by the sliding part is predetermined according to the test requirements of the battery core and the electrode lug, and then the deformation quantity meeting the pressure value is calculated by combining the elastic coefficient of the elastic part. The pressure detection mechanism is used for limiting the deformation quantity of the elastic piece so as to ensure that the elastic piece keeps consistent deformation quantity every time under the limitation of the locking assembly, thereby ensuring that the pressure of the sliding piece acting on the piece to be detected is basically consistent, and improving the accuracy and stability of a detection result.

Another technical scheme in the above technical scheme has the following advantages or beneficial effects: when the sliding part applies pressure to the piece to be detected, the elastic part is elastically deformed; the pressure sensor can ensure that the pressure acted on the piece to be detected by the sliding part is basically kept consistent by accurately detecting the pressure acted on the piece to be detected by the piece to be detected, and the accuracy and the stability of the detection result are improved.

Drawings

In order to more clearly illustrate the technical solutions in the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of the structure of a detection apparatus;

FIG. 2 is an exploded view of a detection device according to one embodiment;

FIG. 3 is a sectional view of a detecting unit according to a fourth embodiment;

FIG. 4 is an enlarged schematic view of portion A of FIG. 3;

FIG. 5 is a sectional view of a detecting unit in another preferred embodiment of the fourth embodiment;

fig. 6 is an enlarged schematic view of a portion B in fig. 5.

Description of the reference numerals:

100. a housing; 110. a first locking portion; 120. a second locking portion; 130. a cavity; 140. a placement chamber; 200. a slider; 210. a first rod body; 211. a first limit plate; 212. a first insulating terminal; 220. A second rod body; 221. a second limiting plate; 222. a second insulated end; 230. a card slot; 240. cutting into noodles; 250. a handle; 300. an elastic member; 410. a plunger; 411. a first end face; 412. a second end face; 413. An arcuate surface; 420. adjusting the cavity; 430. a crimping member; 431. a first portion; 432. a second portion; 440. a resilient compression member; 450. a stepped bore; 451. a first hole; 452. a second hole; 460. a limiting flange; 470. an elastic adjustment member; 510. a tab; 520. and (5) battery cores.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In this application, where the context requires otherwise, the words "upper" and "lower" used in relation to the device in use or operation will generally refer to the upper and lower extremities of the device, particularly as oriented in the drawing figures; while "inner" and "outer" are with respect to the outline of the device.

The embodiment of the application provides a detection device. The following are detailed below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.

Example one

The first embodiment of the application provides a detection device for detect electric core 520 and utmost point ear 510's welding condition, exert fixed effort through utilizing detection device to utmost point ear 510 to judge whether rosin joint appears in electric core 520 and utmost point ear 510's welding position, define utmost point ear 510 in this embodiment and be the piece that awaits measuring. However, the detection device in the present application may also be used for detecting workpieces in other fields, and the present application is not limited thereto.

As shown in fig. 1 to 6, the detecting device includes a housing 100, a sliding member 200, and an elastic member 300, wherein a first position-limiting structure is disposed on the housing 100. The sliding member 200 is slidably disposed through the housing 100 and has an initial position and a detection position, and the sliding member 200 includes at least one insulative end protruding from the housing 100. The slider 200 is a rod-shaped member, and a protruding second limiting structure is disposed on a side wall of the slider 200, and the second limiting structure is adapted to the first limiting structure. The elastic member 300 may elastically act on the slider 200 and is disposed between the slider and an inner wall of the housing 100. The elastic member 300 is preferably a coil spring in the present application, and other products with a relatively stable elastic coefficient may be selected. When the sliding member 200 slides from the initial position to the detection position, the elastic member 300 deforms, and the amount of deformation of the elastic member 300 is proportional to the sliding distance of the sliding member 200, so that the first limit structure and the second limit structure are matched.

When an acting force is applied to the to-be-tested piece by using the insulating end, the elastic piece 300 can synchronously generate elastic deformation, at the moment, the deformation amount of the elastic piece 300 is in direct proportion to the sliding distance of the sliding piece 200, so that the acting force applied to the to-be-tested piece by the sliding piece 200 can be limited by limiting the deformation amount of the elastic piece 300 or the sliding distance of the sliding piece 200, the acting force applied to the to-be-tested piece by the detection device is basically kept consistent during each inspection, and the accuracy and the stability of an inspection result are improved.

The insulating end arranged in an insulating way is used for acting on the piece to be tested, so that the sliding piece 200 can be prevented from being electrically conducted with the piece to be tested, and the safety of the inspection process can be ensured. In addition, the acting force of the insulating end on the piece to be tested can be pressure and tension; when the insulating end is abutted to the piece to be tested, the insulating end can apply pressure to the piece to be tested; when the piece to be tested is pulled by the insulating end, the insulating end can pull towards the piece to be tested; the specific pulling manner includes, but is not limited to, negative pressure adsorption, and air cylinder (or linear driving element) driving the two fixing arms to be pressed and fixed. In this embodiment, in order to simplify the structure of the detection apparatus, it is preferable that the slider 200 applies pressure to the to-be-detected member. The following is an analysis and explanation directly on the case where the sliding member 200 applies a pressing force to the object to be measured, but the scheme where the sliding member 200 applies a pulling force to the object to be measured is also within the scope of the present application.

The housing 100 in this embodiment includes the first locking portion 110 and the second locking portion 120 which are arranged in a split manner, and in this embodiment, both the first locking portion 110 and the second locking portion 120 are in a huff structure, so that the first locking portion 110 and the second locking portion 120 which are arranged in a split manner are convenient to process and assemble. In the application, after the verification of a tension test, the maximum value of the pushing force is defined as 5.5N, so that a UF6-25 spring is selected, the limit elastic force is 5.5N, and K =0.491N/mm.

Further, the first limiting structure further includes a locking assembly, and the locking assembly acts on a side wall of the sliding member 200 to limit an amount of deformation of the elastic member 300 under the action of the sliding member 200. When the sliding member 200 slides from the initial position to the detection position in the process of applying pressure to the to-be-detected member by the sliding member 200, the first limiting structure is matched with the second limiting structure. The elastic member 300 acts on the slider 200 along the axis, thereby elastically deforming the elastic member 300. The pressure applied by the sliding part 200 to the element to be tested is predetermined according to the test requirements of the battery core 520 and the tab 510, and then the deformation amount meeting the pressure value is calculated by combining the elastic coefficient of the elastic part 300. When the sliding distance of the sliding part 200 is the distance from the initial position to the detection position, the first limiting structure is matched with the second limiting structure, so that the sliding part 200 is limited to move along the axial direction, the elastic part 300 is guaranteed to keep consistent deformation amount under the limitation of the locking assembly at each time, the pressure applied to the part to be detected by the sliding part 200 is basically kept consistent, and the accuracy and the stability of the detection result are improved.

Referring to fig. 5 and 6, further, the first stopper structure includes a locking assembly including a plunger 410, a ball-shaped crimp 430, and an elastic compression member 440, wherein the plunger 410 is coupled to the housing 100, and a central axis of the plunger 410 is perpendicular to a central line of the slider 200. The plunger 410 includes a first end face 411 close to the slider 200 and a second end face 412 of the slider 200, and the plunger 410 is recessed from the first end face 411 to form an adjustment chamber 420, so that the opening of the adjustment chamber 420 faces the side wall of the slider 200. The crimping piece 430 includes a first portion 431 embedded into the adjustment chamber 420 and a second portion 432 projected from the adjustment chamber 420, and the second portion 432 is always abutted to the side wall of the slider 200; in order to maintain the stability of the fitting of the crimp 430 inside the adjustment chamber 420 and to prevent the spherical crimp 430 from being separated from the adjustment chamber 420 in the present embodiment, the first portion 431 is larger than the hemisphere of the crimp 430, and the second portion 432 is smaller than the hemisphere of the crimp 430. At the same time, the elastic compression member 440 is compressed into the adjustment chamber 420, and both ends of the elastic compression member 440 abut against the bottom wall of the adjustment chamber 420 and the surface of the first portion 431, respectively, thereby applying a pushing force to the crimp 430 by the elastic compression member 440, pushing the second portion 432 of the crimp 430 to abut against the side wall of the slider 200 at all times. In this embodiment, the elastic compression member 440 has a certain elastic deformation, and a coil spring may be used.

Meanwhile, the side wall of the sliding member 200 is opened with a slot 230 into which the second portion 432 can be inserted. When the insulating end abuts against the sliding member 200 to be tested and moves along the axial direction, the side wall of the sliding member 200 always abuts against the second part 432 and can slide relative to the second part 432. When the displacement of the axial movement of the slider 200 is equal to the preset threshold, the catching groove 230 opened on the side wall of the slider 200 is just moved to a position opposite to the crimp member 430, and the elastic compression member 440 compressed between the plunger 410 and the crimp member 430 converts its elastic force into a pushing force pushing the crimp member 430 to move, so that the second portion 432 is embedded in the catching groove 230, and the pressure applied to the object to be measured by the slider 200 is just equal to the preset pressure value.

Utilize the cooperation of crimping 430 and draw-in groove 230, can realize accurate spacing to slider 200, crimping 430 inlays when establishing inside draw-in groove 230 simultaneously, and the sensing that operator's hand or the arm homoenergetic that supplementary detected all can be obvious has improved the accuracy of testing result.

In addition, the locking groove 230 in this embodiment may be opened circumferentially around the sidewall of the slider 200 to ensure that the second portion 432 is always inserted into the locking groove 230 no matter whether the slider 200 is twisted in the axial direction thereof. Both edges of the card slot 230 are rounded to facilitate sliding in and out of the second portion 432 with respect to the card slot 230.

Referring to fig. 3 and 4, in another preferred embodiment, the first limiting structure includes a locking assembly, the locking assembly includes a stepped hole 450, a plunger 410 and an elastic adjusting member 470, wherein the stepped hole 450 is opened through a side wall of the housing 100, and a central axis of the stepped hole 450 is perpendicular to a central axis of the slider 200; the stepped bore 450 includes a first bore 451 and a second bore 452 communicating to the cavity 130; while forming an annular step at the juncture of first aperture 451 and second aperture 452. The step hole 450 in this embodiment includes a first hole 451 close to the slider 200 and a second hole 452 distant from the slider 200, and an orthographic projection of the second hole 452 is located within the first hole 451. While the first hole 451 is disposed to communicate with the placing chamber 140, the second hole 452 may extend to an outer sidewall of the housing 100.

Plunger 410 is slidably disposed within stepped bore 450; one end of the plunger 410 extends into the second hole 452, and the other end thereof is embedded into the first hole 451; the other end of the plunger 410 within the first aperture 451 includes an arcuate surface 413, the arcuate surface 413 being at least partially exposed to the first aperture 451, the exposed portion being capable of always abutting the side wall of the slider 200. Sliding in and out of the plunger 410 relative to the catch 230 can be facilitated by the plunger 410 having an arcuate end.

The limiting flange 460 is arranged on the side wall of the plunger 410 in a surrounding manner and is embedded into the first hole 451 in a sliding manner; the elastic adjustment member 470 is compressed into the first aperture 451; the two ends of the elastic adjustment member 470 abut against the bottom wall of the first hole 451 and the surface of the position-limiting flange 460, respectively, and the elastic adjustment member 470 is preferably a coil spring in this embodiment. Meanwhile, the side wall of the sliding member 200 is provided with a slot 230 into which the second portion 432 can be inserted. When the insulating end abuts against the slide member 200 to be tested and moves in the axial direction, the side wall of the slide member 200 always abuts against the arc surface 413 and can slide relative to the plunger 410. When the displacement of the axial movement of the slider 200 is equal to the preset threshold value, the locking groove 230 formed on the side wall of the slider 200 moves to a position just opposite to the plunger 410, and the elastic adjusting member 470 compressed between the bottom wall of the first hole 451 and the limit flange 460 converts the elastic force thereof into a pushing force pushing the plunger 410 to move, so that the arc-shaped surface 413 of the plunger 410 is embedded in the locking groove 230, and the pressure applied by the slider 200 on the to-be-measured member is just equal to the preset pressure value.

Utilize plunger 410 and draw-in groove 230's cooperation, can realize accurate spacing to slider 200, plunger 410 inlays when establishing in draw-in groove 230 inside simultaneously, and the sensing that operator's hand or the arm homoenergetic that supplementary detected all can be obvious has improved the accuracy of testing result.

In another preferred embodiment, the first limit structure includes a stopper connected to an inner wall of the housing 100; the second limiting structure comprises a protrusion, and the protrusion is arranged on the side wall of the sliding part 200. When the sliding part 200 slides from the initial position to the detection position, the protrusion abuts against the stop block to realize accurate limiting of the sliding part 200, and the pressure applied to the to-be-detected part by the sliding part 200 is just equal to a preset pressure value. The protrusions in this application are spaced from the inner wall of the housing to reduce the resistance to movement of the slider 200 within the housing.

Further, the sliding member 200 includes a first rod 210 and a second rod 220 connected to each other, one end of the first rod 210 is inserted into the casing 100, and the other end of the first rod extends out of the casing 100; one end of the second lever 220 is inserted into the casing 100, and abuts against one end of the first lever 210, and the other end thereof extends out of the casing 100; and the first rod 210 and/or the second rod 220 are the insulated ends.

The end of the first rod 210 extending from the casing 100 is referred to as a first insulation end 212, when only the first insulation end 212 is insulated, the first insulation end 212 is used for abutting and pushing the object to be tested, and the second rod 220 is used for driving the sliding member 200 to move along the axial direction. The test procedure of the detection device at this time is as follows: the first insulating end 212 is abutted to the object to be tested, the casing 100 applies thrust to the object to be tested through the sliding member 200, and the sliding member 200 slides in the axial direction relative to the casing 100 by using the reaction force applied to the sliding member 200 by the object to be tested. The pressure applied to the dut during this process increases, and the amount of deformation of the elastic member 300 also increases. When the displacement of the sliding member 200 in the axial direction is equal to the predetermined amount of deformation of the elastic member 300, the engaging groove 230 opened in the side wall of the sliding member 200 is moved to a position just opposite to the pressing member 430, and the elastic compression member 440 compressed between the plunger 410 and the pressing member 430 converts its elastic force into a pushing force pushing the pressing member 430 to move, so that the second portion 432 is inserted into the engaging groove 230, and the pressure applied to the test object by the sliding member 200 is just equal to the predetermined pressure value.

The end of the second rod 220 extending from the inside of the casing 100 is referred to as a second insulating end 222, when only the second insulating end 222 is disposed in an insulating manner, the second insulating end 222 is used for abutting against and pushing the object to be tested, and the first rod 210 is used for driving the sliding member 200 to move in the axial direction. The test procedure of the detection device at this time is as follows: the second insulating end 222 abuts against the member to be tested, and the sliding member 200 is driven to move in the axial direction by applying a pushing force to the second insulating end 222. The pressure applied to the dut during this process increases, and the amount of deformation of the elastic member 300 also increases. When the displacement of the sliding member 200 in the axial direction is equal to the predetermined amount of deformation of the elastic member 300, the engaging groove 230 opened in the side wall of the sliding member 200 is moved to a position just opposite to the pressing member 430, and the elastic compression member 440 compressed between the plunger 410 and the pressing member 430 converts its elastic force into a pushing force pushing the pressing member 430 to move, so that the second portion 432 is inserted into the engaging groove 230, and the pressure applied to the test object by the sliding member 200 is just equal to the predetermined pressure value.

Of course, when the first insulating end 212 and the second insulating end 222 are both insulated, the partial region of the slider 200 between the first insulating end 212 and the second insulating end 222 is made of non-insulating material for safety.

In the embodiment, the sliding member 200 includes a first insulation end 212 and a second insulation end 222 extending from the housing 100, the first insulation end 212 and the second insulation end 222 are distributed oppositely, only the first insulation end 212 is arranged in an insulation manner, and the second insulation end 222 is made of a non-insulation material.

Meanwhile, the material of the first insulating end 212 comprises at least one of ceramic, polycarbonate, ultra-high molecular weight polyethylene, polyformaldehyde resin and glass fiber reinforced plastic; the material of the second insulating end 222 includes at least one of cemented carbide and ceramic.

Further, a handle 250 is attached to the second insulated end 222 for ease of handling. The first insulating end 212 includes at least one cut 240, and the cut 240 is formed along an inclined direction from a center of an end surface close to the first insulating end 212 to a side wall thereof, so that when the first insulating end 212 abuts against the tab 510, the cut 240 can be attached to a surface of the battery cell 520, so as to increase a contact area between the first insulating end 212 and the tab 510.

Further, the limiting member comprises a first limiting plate 211 and a second limiting plate 221 which are detachably connected; either one of the first and

second stopper plates

211 and 221 is fixed to an end of the first rod 210, and the other is fixed to an end of the second rod 220.

The first rod 210 and the second rod 220 are connected by the first stopper plate 211 and the second stopper plate 221, so that the reliability of the slider 200 in fixing the two main portions can be increased. Meanwhile, the first rod 210 and the second rod 220 are detachably connected, so that the insulating end can be conveniently replaced, and the adaptability of the detection device can be improved.

Further, the housing 100 includes a cavity 130, the first limiting plate 211 and the second limiting plate 221 are both located in the cavity 130, and the elastic element 300 is located between the second limiting plate 221 and the cavity 130; the first limiting structure comprises a positioning piece which is arranged on the inner wall of the cavity 130; when the slider slides from the initial position to the detection position, the elastic member 300 is deformed, and the second stopper plate 221 abuts against the positioning member. The second limiting plate 221 is circumferentially disposed around the sidewall of the sliding member 200, and is axially slidably inserted into the cavity 130. The elastic member 300 is sleeved to the sidewall of the sliding member 200 and disposed in the cavity 130, such that two ends of the elastic member 300 abut against the second limiting plate 221 and the bottom wall of the casing 100, respectively. The movement displacement of the slider 200 is restricted by the abutment of the second stopper plate 221 and the positioning member.

Example two

With reference to fig. 1 to 6, this embodiment includes some structural features of the first embodiment, and differs from the first embodiment in that the detection device further includes a displacement sensor (not shown) and does not include the locking assembly of the first embodiment, where the displacement sensor is disposed on the housing 100 to detect a sliding distance of the sliding member 200 in the axial direction or a deformation amount of the elastic member 300 in the axial direction.

When the sliding member 200 applies a pressure to the dut, the elastic member 300 acts on the sliding member 200 in the axial direction, so that the elastic member 300 is elastically deformed. The displacement sensor can ensure that the elastic element 300 keeps consistent deformation amount every time under the limitation of the locking assembly by accurately detecting the movement displacement of the sliding element 200 along the axial direction or the deformation amount of the elastic element 300 along the axial direction, thereby ensuring that the pressure of the sliding element 200 acting on the element to be detected is basically consistent, and improving the accuracy and stability of the detection result.

In this embodiment, a display (not shown) electrically connected to the displacement sensor may be provided outside the housing 100 for the convenience of the operator.

The functions of the detection apparatus provided in this embodiment correspond to the functions implemented in the first embodiment, so other functions of this embodiment can be referred to in the first embodiment, and are not described in detail herein.

EXAMPLE III

With reference to fig. 1-6, the present embodiment includes some structural features of the first embodiment, and the difference with respect to the first embodiment is that the detecting device further includes a force sensor (not shown), and does not include the locking assembly of the first embodiment, wherein the force sensor is connected to the sliding member 200 and/or the elastic member 300 for detecting the force applied by the sliding member 200 to the object. Since the application is explained by analyzing the pressure applied by the sliding member 200 to the member to be measured, the corresponding force sensor is a pressure sensor.

When the sliding member 200 applies a pressure to the dut, the elastic member 300 acts on the sliding member 200 in the axial direction, so that the elastic member 300 is elastically deformed. The pressure sensor can ensure that the pressure of the sliding part 200 acting on the piece to be detected is basically kept consistent by accurately detecting the pressure of the piece to be detected acting on the sliding part 200, and the accuracy and the stability of the detection result are improved.

In this embodiment, for the convenience of the operator, a display (not shown) electrically connected to the pressure sensor may be provided outside the housing 100.

The functions of the detection apparatus provided in this embodiment correspond to the functions implemented in the first and second embodiments, so other functions of this embodiment can be referred to in the first and second embodiments, and are not described in detail herein.

The foregoing describes in detail a detection apparatus provided in an embodiment of the present application, and a specific example is applied to illustrate the principle and the implementation manner of the present application, and the description of the foregoing embodiment is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A detection device, comprising:

the shell is provided with a first limiting structure;

a slider slidably mounted into the housing and having an initial position and a detection position; one end of the sliding piece extends to the outside of the shell; the sliding part is provided with a second limiting structure which can be matched with the first limiting structure; and

the elastic piece is arranged between the sliding piece and the shell and used for assisting the sliding piece to move from a detection position to an initial position;

when the sliding part slides from the initial position to the detection position, the elastic part deforms, the deformation amount of the elastic part is in direct proportion to the sliding distance of the sliding part, and therefore the first limiting structure is matched with the second limiting structure.

2. The detecting device according to claim 1,

the first limiting structure comprises a stop block, and the stop block is connected to the inner wall of the shell;

the second limiting structure comprises a bulge which is arranged on the side wall of the sliding part,

when the slider slides from the initial position to the detection position, the projection abuts against the stopper.

3. The sensing device of claim 1, wherein the first limit stop structure comprises a locking assembly, the locking assembly comprising:

a plunger embedded to a sidewall of the housing; the central axis of the plunger is perpendicular to the central line of the sliding piece; the plunger is provided with an adjusting cavity from the end surface close to the sliding part in a concave manner;

a crimp member including a first portion embedded into the adjustment cavity and a second portion protruding from the adjustment cavity; and

the elastic compression piece is arranged between the first part and the bottom wall of the adjusting cavity and used for pushing the compression joint piece, so that the second part protrudes out of the inner side wall of the shell.

4. The sensing device of claim 1, wherein the first limit stop structure comprises a locking assembly, the locking assembly comprising:

the stepped hole penetrates through the side wall of the shell, and the central axis of the stepped hole is perpendicular to the central line of the sliding piece; the stepped hole comprises a first hole and a second hole communicated to the shell, and the aperture of the first hole is larger than that of the second hole; forming an annular step at the junction of the first and second holes;

a plunger slidably mounted to the stepped bore; the plunger comprises a limiting flange protruding out of the side wall and an arc-shaped surface protruding out of the end face, and the limiting flange can be embedded into the first hole in a sliding mode; and

and the elastic adjusting piece is arranged between the limiting flange and the annular step and used for supporting the plunger, so that the arc surface protrudes out of the inner side wall of the shell.

5. The detection device of claim 1, further comprising:

and the displacement sensor is arranged on the shell and used for detecting the sliding distance of the sliding piece.

6. The detection device according to claim 1, further comprising:

and the force sensor is connected to the elastic piece and used for detecting the acting force between the sliding piece and the piece to be detected.

7. The detection device according to any one of claims 1 to 6, wherein the slider comprises:

one end of the first rod body is inserted into the shell, and the other end of the first rod body extends out of the shell;

one end of the second rod body is inserted into the shell and is abutted against one end of the first rod body, and the other end of the second rod body extends out of the shell.

8. The detection device according to claim 7, wherein the second limiting structure comprises a first limiting plate and a second limiting plate which are detachably connected;

either one of the first and second limit plates is fixed to an end of the first rod, and the other is fixed to an end of the second rod.

9. The detecting device according to claim 8, wherein the housing includes a cavity, the first and second limiting plates are located in the cavity, and the elastic member is located between the second limiting plate and the cavity;

the first limiting structure comprises a positioning piece, and the positioning piece is arranged on the inner wall of the cavity; when the sliding piece slides from the initial position to the detection position, the elastic piece deforms, and the second limit plate abuts against the positioning piece.

10. The detecting device for detecting the rotation of a motor rotor as claimed in any one of claims 1 to 6, wherein the sliding member includes at least one cut surface, and the cut surface is opened along the inclined direction from the center of the end surface of the sliding member to the side wall thereof.