CN115327182A - Clamping tool and testing device - Google Patents

Abstract

The invention discloses a clamping tool and a testing device, wherein the clamping tool comprises a base and a clamping mechanism, the clamping mechanism comprises at least two clamping components, each clamping component comprises a clamping seat, an elastic part and a clamping part, the clamping seats are connected with the base, clamping spaces are enclosed by the at least two clamping seats and the base, the clamping parts are movably connected with the clamping seats, the elastic parts are connected with the clamping parts and the clamping seats, part of the clamping parts extend into the clamping spaces, and the clamping parts are enclosed to form an inlet communicated with the clamping spaces; the clamping tool is provided with a first state and a second state, wherein the carrier is placed in the clamping space, and when the carrier enters the clamping space in the first state, the clamping tool supports against at least two clamping pieces to be away from each other so as to open the inlet; in the second state, the elastic piece drives the clamping piece to reset so as to clamp the carrier in the clamping space. This application can realize pressing from both sides tight frock through the action that a carrier was placed, and the tight carrier of clamp when realizing placing the carrier is by first state to second state, and easy operation is convenient, saves time, improves work efficiency.

Description

Clamping tool and testing device

Technical Field

The invention relates to the technical field of testing tools, in particular to a clamping tool and a testing device.

Background

At present, in the testing process of electronic products, the carrier is clamped generally by adopting the modes of magnet adsorption, overturning press block clamping, quick clamping and the like.

The carrier is usually placed in the clamping mode, then the clamping mechanism is operated to clamp, in some testing tools which cannot use magnet adsorption, the carrier cannot be placed in the clamping mode, meanwhile, the carrier is clamped, the working efficiency is low, and the use is inconvenient.

Disclosure of Invention

The invention mainly aims to provide a clamping tool, aiming at simultaneously placing and clamping a carrier by one action and improving the efficiency.

In order to achieve the above object, the present invention provides a clamping tool for clamping a carrier, the clamping tool comprising:

a base; and

the clamping mechanism comprises at least two clamping components, each clamping component comprises a clamping seat, an elastic piece and a clamping piece, the clamping seat is connected with the base, a clamping space is defined by the clamping seat and the base, the clamping pieces are movably connected with the clamping seats, the elastic pieces are connected with the clamping pieces and the clamping seats, part of the clamping pieces extend into the clamping space, and the clamping pieces define an inlet communicated with the clamping space;

the clamping tool is provided with a first state and a second state, wherein the carrier is placed in the clamping space, and when the carrier enters the clamping space in the first state, the clamping tool supports against the clamping piece to move in the direction far away from the clamping space so as to open the inlet; in the second state, the elastic piece drives the clamping piece to reset so as to clamp the carrier in the clamping space.

In an embodiment, the elastic member is a spring, the clamping assembly further includes a connecting member rotatably connected to the holder, the clamping member is connected to one end of the connecting member so that the clamping member can swing with respect to the holder, one end of the spring is connected to the holder, and the other end of the spring is connected to the connecting member.

In an embodiment, the holder is provided with an installation space and a first avoidance groove formed in the side wall of the installation space, the first avoidance groove is communicated with the installation space and the clamping space, the connecting piece and the spring are arranged in the installation space, and the clamping piece enters and exits from the clamping space through the first avoidance groove.

In one embodiment, the spring is disposed on at least one side of the swinging direction of the connecting member, and two ends of the spring are connected to the connecting member and the inner wall of the installation space.

In one embodiment, the cartridge comprises:

the seat body is provided with a mounting groove with an opening at one side, and a second avoidance groove is formed in the wall surface of the mounting groove opposite to the opening; and

the cover body covers the opening and is formed by enclosing the seat body in the installation space, the cover body is provided with the first avoidance groove, the first avoidance groove and the second avoidance groove are opposite and communicated, and a movement channel for the clamping piece to swing is formed.

In one embodiment, the holder is provided with a guide surface facing the entrance, along which the carrier enters the entrance.

In one embodiment, the guide surface is an arc surface;

and/or the clamping piece is rotatably connected with the connecting piece, so that the guide surface can roll relative to the carrier.

In one embodiment, the clamping member is a wheel, the center of the wheel is rotatably connected to the connecting member, the lateral periphery of the wheel forms the guiding surface, the height of the center of the wheel relative to the base is h1, the height of the carrier is h2, and the following relationships are satisfied: h1 > h2.

In one embodiment, the base is provided with a positioning column, the carrier is provided with a positioning hole, and the positioning column is used for extending into the positioning hole;

and/or the base is also provided with pins which are used for being electrically connected with the element to be tested through the carrier.

The invention further provides a testing device, which comprises a carrier and the clamping tool in any one of the embodiments, wherein the carrier is used for bearing the element to be tested.

According to the technical scheme, the clamping mechanism is arranged on the base and comprises at least two clamping components, at least two clamping seats and the base enclose a clamping space, one clamping piece is connected with one clamping seat in a swinging mode, and at least two clamping pieces enclose an inlet. When the carrier moves close to the clamping space, the clamping tool enters a first state, the carrier presses the clamping piece and gives a lateral force to the clamping piece to keep away from the clamping space, so that the clamping piece moves to open the inlet, and the carrier can penetrate into the clamping space through the inlet; when the carrier is in the second state, the carrier is in butt joint with the base, and the elastic piece drives the clamping piece to reset and clamp the carrier. At the carrier to the in-process of centre gripping space internal motion, can swing the holder that sets up and keep the butt relation with the carrier, through the action that once the carrier was placed, can realize pressing from both sides tight frock by first state to second state, presss from both sides tight carrier when realizing placing the carrier, easy operation is convenient, saves time, improves work efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a clamping fixture according to the present invention;

FIG. 2 is a schematic top view of the clamping tool shown in FIG. 1;

FIG. 3 is an exploded view of an embodiment of the clamping assembly of the present invention;

FIG. 4 is a cross-sectional view of the clamping assembly of FIG. 3;

FIG. 5 is a schematic sectional view of a part of the clamping tool in a first state according to an embodiment of the present invention;

fig. 6 is a schematic sectional view of a part of the clamping tool in a second state according to an embodiment of the present invention.

The reference numbers indicate:

reference numerals	Name(s)	Reference numerals	Name (R)
				100	Clamping tool	311a	Mounting groove
100a	Clamping space	311b	Second avoidance groove
				10	Base seat	313	Cover body
11	Positioning column	313a	First avoiding groove
				13	Pin	313b	Limiting part
30	Clamping assembly	33	Clamping piece
				31	Clamp base	33a	Guide surface
31a	Installation space		35						Connecting piece
				31b	Movement channel	37	Spring
311	Seat body	200	Carrier tool

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

In addition, the descriptions relating to "first", "second", etc. in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

At present, in the testing process of electronic products, the carrier is clamped generally by adopting the modes of magnet adsorption, overturning press block clamping, quick clamping and the like. The carrier is usually placed in the clamping mode, then the clamping mechanism is operated to clamp, in some testing tools which cannot use magnet adsorption, the carrier cannot be placed in the clamping mode, meanwhile, the carrier is clamped, the working efficiency is low, and the use is inconvenient.

In view of this, in order to achieve the object of placing and clamping the carrier simultaneously and improving the efficiency, the present application provides a clamping tool 100.

Referring to fig. 1 to 6, the clamping tool 100 is used for clamping a carrier 200, in some embodiments of the present application, the clamping tool 100 includes a base 10 and a clamping mechanism, the clamping mechanism includes at least two clamping assemblies 30, each clamping assembly 30 includes a holder 31, an elastic member, and a clamping member 33, the holder 31 is connected to the base 10, at least two holders 31 and the base 10 enclose a clamping space 100a, the clamping member 33 is movably connected to the holder 31, the elastic member connects the clamping member 33 and the holder 31, a portion of the clamping member 33 extends into the clamping space 100a, and the clamping member 33 encloses an inlet communicating with the clamping space 100a;

the clamping tool 100 has a first state and a second state in which the carrier 200 is placed in the clamping space 100a, and in the first state, when the carrier 200 enters the clamping space 100a, the pressing clamping member 33 moves in a direction away from the clamping space 100a to open the entrance; in the second state, the elastic member drives the clamping member 33 to return to clamp the carrier 200 in the clamping space 100a.

In one embodiment, the base 10 is a flat plate structure for connecting with other hardware devices or fixing the clamping tool 100 on a working plane. The surface of the base 10 is large enough for the gripper mechanism and carrier 200 to be disposed. In this embodiment, the clamping mechanism includes two clamping assemblies 30 disposed opposite to each other, the clamping seats 31 are fixed on the base 10, the two clamping seats 31 are disposed at an interval, and the opposite sides of the two clamping assemblies and the base 10 enclose the clamping space 100a.

The clamping members 33 are movable relative to the clamping base 31. In this embodiment, two clamping members 33 are disposed opposite to each other, and opposite sides of the two clamping members 33 can extend into the clamping space 100a to form the inlet. It will be appreciated that in the normal state, i.e. before the first state described above, the opposite sides of the two clamping members 33 are retained within the clamping space 100a such that the size of the inlet is smaller than the size of the clamping space 100a.

Referring to fig. 1, the carrier 200 has two opposite sides, and in the present embodiment, the carrier 200 is substantially rectangular, and a receiving groove is recessed thereon for placing the device to be tested. When the clamping tool 100 of the present embodiment is horizontally disposed, the entrance is upward, the carrier 200 moves in the vertical direction and approaches the entrance, and when the two opposite sides of the carrier 200 respectively abut against the clamping members 33, the first state is entered.

It will be appreciated that the size of the opposite sides of the carrier 200 is larger than the size of the entrance in the conventional state, and slightly smaller than the size of the holding space 100a.

In the first state, two sides of the carrier 200 respectively abut against the two grippers 33, and along with the movement of the carrier 200 towards the gripping space 100a, the carrier 200 gives a lateral force to the grippers 33 away from the gripping space 100a, and the grippers 33 move towards the direction away from the gripping space 100a under the action of the carrier 200, so that the entrance is gradually opened, and the carrier 200 enters the gripping space 100a;

alternatively, gripping member 33 oscillates or performs a rectilinear translational movement with respect to holder 31.

In the second state, the carrier 200 is abutted with the base 10, and at this time, the clamping member 33 is reset under the action of the elastic member and abuts against the two sides of the carrier 200 to clamp and fix the carrier 200.

It can be understood that, the carrier 200 is driven by a worker or a driving device connected to the carrier 200 to move in the vertical direction, and the swingably arranged clamp 33 maintains the abutting relationship with the carrier 200 during the movement of the carrier 200 into the clamping space 100a, so that the carrier 200 can be placed and clamped by one-time placing of the carrier 200, that is, the switching between the two states is completed.

In other embodiments, more than two clamping assemblies 30 may be provided in the clamping mechanism. Alternatively, the clamping assemblies 30 may be disposed opposite to each other in pairs, the pairs of clamping assemblies 30 may be disposed on opposite sides of the carrier 200 or disposed along the circumferential direction, the plurality of clamping seats 31 and the base 10 enclose the clamping space 100a, and the plurality of clamping members 33 enclose the inlet, so as to enhance the clamping stability and the fastening effect.

Of course, the shapes of the base 10 and the carrier 200 are not limited, the base 10 needs to be large enough to place the clamping mechanism and the carrier 200, and the carrier 200 can be abutted against at least two opposite clamping members 33 on the premise of ensuring the self-bearing function.

In another embodiment of the present application, the outer contour of the carrier 200 is substantially circular, the chucking mechanism is provided with a plurality of chucking assemblies 30 arranged along the circumferential direction of the carrier, and a plurality of chucks 33 are arranged toward the center of the carrier 200. Optionally, the number of the clamping assemblies 30 is three, and the three clamping assemblies 30 are disposed at three corner points of a triangle, so as to more stably clamp and fix the carrier 200.

When the carrier 200 moves close to the clamping space 100a, the clamping tool 100 of the present application enters the first state, the carrier 200 presses against the clamping member 33 and provides a lateral force to the clamping member 33 away from the clamping space 100a, so that the clamping member 33 moves to open the entrance, and the carrier 200 can go deep into the clamping space 100a through the entrance; in the second state, the carrier 200 is abutted against the base 10, and the elastic member drives the clamping member 33 to reset and clamp the carrier 200. In the process that the carrier 200 moves into the clamping space 100a, the clamping piece 33 keeps the abutting relation with the carrier 200, the clamping tool 100 can be clamped from the first state to the second state through the action of once placing the carrier 200, the carrier 200 is clamped while the carrier 200 is placed, the operation is simple and convenient, the time is saved, and the working efficiency is improved.

Referring to fig. 3 and 4, in an embodiment, the elastic member is a spring 37, the clamping assembly 30 further includes a connecting member 35, the connecting member 35 is rotatably connected to the holder 31, and the clamping member 33 is connected to an end of the connecting member 35 away from the rotation axis, so that the clamping member 33 can swing with respect to the holder 31; one end of the spring 37 is connected to the holder 31, and the other end of the spring 37 is connected to the connecting member 35 to reset the holder 33.

In this embodiment, the holding member 33 may be in the form of a block or a plate, and the connecting member 35 is substantially rod-shaped, and has an extending shaft at one end thereof, which is perpendicular to the swinging plane of the holding member 33. The holder 31 is provided with a shaft hole, and the rotating shaft is rotatably connected with the shaft hole in a matching manner, so that the connecting piece 35 can swing relative to the holder 31. Similarly, the end of the connecting member 35 away from the rotating shaft is connected to the holding member 33, and when the connecting member 35 swings, the holding member 33 swings.

Alternatively, the connecting member 35 is provided with two rotating shafts at both sides thereof and respectively connected with two shaft holes of the base 10, so that the structure is more stable.

Generally, if the clamp 33 needs to be moved horizontally, a structure such as a horizontal guide rail needs to be provided on the base 10 or the holder 31, which is complicated. In this case, when the carrier 200 abuts against the clip 33 from the top to the bottom, the clip 33 is easily kept from being locked to other structures. The clamping piece 33 of the embodiment adopts a swinging mode, the swinging of the clamping piece 33 can be realized only by matching the connecting piece 35, the spring 37 and the clamping seat 31 which rotate the clamping seat, a guide rail is not needed to be arranged, the structure is simple, the self-locking problem is not needed to be worried about, the resistance of the movement of the carrier 200 is smaller, the carrier is smoother and the efficiency is higher.

In other embodiments, the holder 31 may be a block body disposed on the base 10, the connecting member 35 is disposed on the holder 31, and a torsion spring is disposed at the rotating shaft of the connecting member 35, and the torsion spring resets the connecting member 35 and causes the clamping member 33 to clamp the carrier 200.

In an embodiment, referring to fig. 3 to 6, the holder 31 is provided with an installation space 31a and a first avoiding groove 313a provided on a sidewall of the installation space 31a, the first avoiding groove 313a communicates the installation space 31a and the clamping space 100a, the connecting member 35 and the spring 37 are provided in the installation space 31a, and the clamping member 33 enters and exits the clamping space 100a through the first avoiding groove 313 a.

When the clamping tool 100 is horizontally placed, the clamping seat 31 is a bar-shaped block body extending along the vertical direction, an installation space 31a is formed in the clamping seat, the side wall of the installation space 31a forms the shaft hole, and the rotating shaft is connected with the shaft hole in a matching manner. The first escape groove 313a is provided in conformity with the shape of the clamp member 33 so that the clamp member 33 can be extended into the clamp space 100a through the first escape groove 313a in the normal state, and the clamp member 33 can be moved in the clamp space 100a and the installation space 31a through the first escape groove 313a without hindrance in the first state and the second state.

Through form installation space 31a at holder 31 and hold connecting piece 35 and holder 33, on the one hand play limiting displacement to connecting piece 35, avoid connecting piece 35 amplitude of oscillation too big and make the structure unstability, the condition such as spring 37 inefficacy, on the other hand provides the installation basis for connecting piece 35 and holder 33, can protect internal device to a certain extent.

Referring again to fig. 3 to 6, the spring 37 is provided at least one side of the swing direction of the link 35, and both ends of the spring 37 are connected to the link 35 and the inner wall of the installation space 31 a.

In one embodiment, the spring 37 is disposed on one side of the connecting member 35, and when the connecting member 35 swings in the first state, the spring 37 deforms and generates an acting force on the connecting member 35; when carrier 200 enters clamping space 100a in the second state, its lateral force on clamping element 33 is reduced, and connecting element 35 drives clamping element 33 to return and clamp carrier 200 under the action of spring 37.

In another embodiment, springs 37 can be provided on both sides of the connecting member 35 to improve stability and provide a greater clamping force to the clamping member 33.

Alternatively, both ends of the spring 37 are respectively inserted into the surfaces of the mounting space 31a and the connecting member 35, further improving structural stability.

When the installation space 31a is large enough, the holding member 33 has enough movement space in the installation space 31a, and only one avoiding groove is formed for the holding member 33 to extend into the holding space 100a.

In one embodiment, referring to fig. 3, the holder 31 includes a holder body 311 and a cover 313, the holder body 311 is provided with a mounting groove 311a having an opening at one side, a wall surface of the mounting groove 311a opposite to the opening is provided with a second avoiding groove 311b, the cover 313 covers the opening and encloses the holder body 311 to form a mounting space 31a, the cover 313 is provided with a first avoiding groove 313a, and the first avoiding groove 313a and the second avoiding groove 311b are opposite and communicated to form a movement channel 31b for the swing of the clamping member 33.

In this embodiment, the holder 31 includes a holder body 311 and a cover 313 which are separately provided, and when assembling, the connector 35, the holder 33, the spring 37, and the like may be previously assembled in the holder body 311 through the opening, and then the cover 313 may be engaged. The cover 313 and the seat body 311 can be connected by bolts or gluing, which is convenient for production and assembly.

Further, the seat body 311 of the present embodiment is further provided with a second avoiding groove 311b, the second avoiding groove 311b is disposed opposite to the first avoiding groove 313a and forms a moving channel 31b passing through the mounting space 31a, and the clamp 33 is disposed in the moving channel 31b. In this way, the holder 31 can be designed to be more compact, and the clamping member 33 can partially protrude out of the first avoidance groove 313a and/or the second avoidance groove 311b.

Referring to fig. 2 and 3, in an embodiment, a position-limiting portion 313b is disposed on one side of the cover 313, and a surface of the position-limiting portion 313b facing the clamping space 100a is disposed in an arc shape for abutting against the carrier 200.

In this embodiment, the two clamping assemblies 30 are oppositely disposed on one side of the base 10, and the side edge of the cover 313 is bent to form a limiting portion 313b. Generally, the edge of the carrier 200 is usually smoothed, so in this embodiment, the surface of the position-limiting portion 313b facing the clamping space 100a is disposed in an arc shape, and the curvature of the surface is approximately equal to or slightly larger than the curvature of the edge of the carrier 200, so that the position-limiting portion 313b better fits the carrier 200. The position-limiting portion 313b extends along the height direction of the holder 31, and provides a certain guiding function for the movement of the carrier 200 into the clamping space 100a.

It is understood that, in other embodiments, the position-limiting portion 313b and the body portion of the cover 313 may be separately disposed and detachably connected, so that the disposing manner of the clamping assembly 30 is more flexible and changeable, and is not limited to one side of the carrier 200.

Of course, in other embodiments, the edge of the carrier 200 may have other shapes, and the surface of the position-limiting portion 313b facing the clamping space 100a is adapted to the shape of the edge of the outer peripheral surface of the carrier 200. For example, the corner of the carrier 200 may be disposed at 90 degrees, and correspondingly, the position-limiting portion 313b is also disposed at 90 degrees to the body portion of the cover 313 to ensure the fitting degree.

In one embodiment, the gripper 33 is provided with a guide surface 33a facing the entrance, along which guide surface 33a the carrier 200 is moved into the entrance.

In this embodiment, the clamping member 33 is a plate or a block, and a side of the clamping member 33 faces the inlet. When the clamping fixture 100 is horizontally disposed, the guiding surface 33a may be an inclined surface forming a certain included angle with the horizontal surface, and a distance from a point on the guiding inclined surface of each clamping member 33 to the center of the inlet is gradually increased from bottom to top, that is, a size of the inlet is gradually increased from bottom to top, so that the carrier 200 is pressed against the clamping member 33.

In another embodiment, the guiding surface 33a may be ">", in the first state, the carrier 200 first presses against a part of the guiding surface 33a, and the holder 33 swings away from the center of the entrance along with the downward movement of the carrier 200; in the second state, carrier 200 presses down a part of guiding surface 33a, and moves downwards along with carrier 200, gripper 33 resets and moves close to the center of the entrance, and when carrier 200 is in position, the next part of guiding surface 33a clamps carrier 200.

That is, in the present application, the carrier 200 is always kept in contact with the guide surface 33a during the process of entering the clamping space 100a and being in place, so that the motion is continuous, and the carrier 200 can smoothly enter the clamping space 100a along the guide surface 33a and is clamped by the guide surface 33 a.

Preferably, the angle between the upper and lower guide surfaces 33a is an obtuse angle.

Of course, in other embodiments, a clamping portion may be further provided under the guiding surface 33a of the clamping member 33, the carrier 200 moves to the clamping portion along the guiding surface 33a, and the clamping portion of the clamping member 33 clamps the carrier 200 when the carrier 200 is in place.

Alternatively, the clamping portion may be a groove or notch structure provided in the clamping member 33.

Referring to fig. 5 and 6, in a further embodiment of the present application, the guide surface 33a is an arc-shaped surface. In this embodiment, the arc-shaped guiding surface 33a can make the movement of the clamping member 33 and the carrier 200 smoother, enhance the continuity of the movement, and facilitate the picking and placing of the carrier 200.

Further, the clamper 33 is rotatably connected to the connecting member 35 so that the guide surface 33a can roll with respect to the carrier 200. In one embodiment, when the carrier 200 abuts against the guide surface 33a and moves into the clamping space 100a, the clamping member 33 rotates to make the guide surface 33a roll relative to the side surface of the carrier 200, so that the sliding friction resistance is changed into rolling friction resistance, and the resistance of the guide surface 33a to the carrier 200 is reduced. Furthermore, in the embodiment, the holding member 33 rotates while swinging, and compared with the case that the holding member 33 rotates while performing the translational motion along the straight line, the resistance of the swinging holding member 33 to the carrier 200 is smaller, so that the movement of the carrier 200 is more portable and smoother.

Specifically, referring to fig. 3 to 6, in an embodiment, the clamping member 33 is a wheel, a center of the wheel is rotatably connected to the connecting member 35, a side peripheral surface of the wheel forms the guiding surface 33a, and a height of the center of the wheel relative to the base 10 is h1, a height of the carrier 200 is h2, and the following relationships are satisfied: h1 > h2.

As shown in fig. 6, in the present embodiment, when the carrier 200 is at a position, since the center of the wheel is higher than the height of the carrier 200, the guiding surface 33a gives the carrier 200 a downward force F1 and a lateral force F2, and the plurality of grippers 33 are engaged, i.e. the plurality of downward forces F1 and the plurality of lateral forces F2 are applied to the carrier 200, wherein the direction of F1 is vertically downward toward the base 10, and the direction of F2 is toward the carrier 200, so that the carrier 200 is tightly clamped and fixed on the base 10, and a good fixing effect is obtained.

Referring to fig. 5 and 6, in an embodiment, the base 10 is provided with positioning posts 11, the carrier 200 is provided with positioning holes, and the positioning posts 11 are used for extending into the positioning holes so as to insert and position the base 10 and the carrier 200. Further, the base 10 is further provided with a pin 13, and the pin 13 is used for electrically connecting with the device under test through the carrier 200.

The present invention further provides a testing device, the testing device includes a carrier 200 and a clamping fixture 100, the carrier 200 is used for bearing a device to be tested, the specific structure of the clamping fixture 100 refers to the above embodiments, and the testing device adopts all technical solutions of all the above embodiments, so that the testing device at least has all beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.

Claims (10)

1. The utility model provides a press from both sides tight frock for the centre gripping carrier, its characterized in that presss from both sides tight frock includes:

a base; and

the clamping mechanism comprises at least two clamping components, each clamping component comprises a clamping seat, an elastic piece and a clamping piece, the clamping seat is connected with the base, the clamping seat and the base enclose a clamping space, the clamping pieces are movably connected with the clamping seats, the elastic pieces are connected with the clamping pieces and the clamping seats, part of the clamping pieces extend into the clamping space, and the clamping pieces enclose an inlet communicated with the clamping space;

the clamping tool is provided with a first state and a second state, wherein the carrier is placed in the clamping space, and when the carrier enters the clamping space in the first state, the clamping tool supports against the clamping piece to move in the direction far away from the clamping space so as to open the inlet; in the second state, the elastic piece drives the clamping piece to reset so as to clamp the carrier in the clamping space.

2. The clamping tool according to claim 1, wherein the elastic member is a spring, the clamping assembly further comprises a connecting member, the connecting member is rotatably connected to the holder, the clamping member is connected to one end of the connecting member so that the clamping member can swing relative to the holder, one end of the spring is connected to the holder, and the other end of the spring is connected to the connecting member.

3. The clamping tool according to claim 2, wherein the clamping seat is provided with an installation space and a first avoiding groove arranged on a side wall of the installation space, the first avoiding groove is communicated with the installation space and the clamping space, the connecting piece and the spring are arranged in the installation space, and the clamping piece enters and exits the clamping space through the first avoiding groove.

4. The clamping tool according to claim 3, wherein the spring is arranged on at least one side of the swinging direction of the connecting piece, and two ends of the spring are connected with the connecting piece and the inner wall of the installation space.

5. The clamping tool of claim 3, wherein the holder comprises:

the seat body is provided with a mounting groove with an opening at one side, and a second avoidance groove is formed in the wall surface of the mounting groove opposite to the opening; and

the cover body covers the opening and is formed by enclosing the seat body in the installation space, the cover body is provided with the first avoidance groove, the first avoidance groove and the second avoidance groove are opposite and communicated, and a movement channel for the clamping piece to swing is formed.

6. The clamping tool of claim 2 wherein the holder is provided with a guide surface facing the entrance, the carrier entering the entrance along the guide surface.

7. The clamping tool according to claim 6, wherein the guide surface is an arc-shaped surface;

and/or the clamping piece is rotatably connected with the connecting piece so that the guide surface can roll relative to the carrier.

8. The clamping tool according to claim 7, wherein the clamping member is a wheel, a center of the wheel is rotatably connected to the connecting member, a side circumferential surface of the wheel forms the guide surface, a height of the center of the wheel relative to the base is h1, a height of the carrier is h2, and a relationship: h1 > h2.

9. The clamping tool according to any one of claims 1 to 8, wherein the base is provided with positioning posts, the carrier is provided with positioning holes, and the positioning posts are used for extending into the positioning holes;

and/or the base is also provided with pins which are used for being electrically connected with the element to be tested through the carrier.

10. A testing device, comprising a carrier for carrying a device under test and the clamping tool of any one of claims 1 to 9.

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