CN113305763B

CN113305763B - Clamp

Info

Publication number: CN113305763B
Application number: CN202110512829.XA
Authority: CN
Inventors: 谢端卿; 余顺周
Original assignee: Shenzhen Core Medical Technology Co Ltd
Current assignee: Shenzhen Core Medical Technology Co Ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2023-05-09
Anticipated expiration: 2041-05-11
Also published as: CN113305763A

Abstract

The invention provides a clamp which is used for assembling a first assembly part and a second assembly part, wherein the clamp comprises a positioning base, a fixing mechanism and a pushing mechanism, and the positioning base is provided with a first limit groove for placing the first assembly part; the fixing mechanism comprises a connecting body connected to the positioning base, and a second limiting groove for placing a second assembly part is formed in the connecting body; the pushing mechanism comprises a main body part and a clamping part connected to the main body part, the clamping part is arranged opposite to the connecting body, the main body part is slidably connected to the connecting body and can move towards or away from the positioning base, the main body part is used for pushing against the second assembly part so that one end of the second assembly part is abutted against the first assembly part, when the main body part moves towards the positioning base, the clamping part covers at least part of the second assembly part, the clamping part and the positioning base are arranged at intervals, and a channel is formed. The fixture improves the positioning precision of the first assembly part and the second assembly part, and realizes the accurate alignment assembly of the first assembly part and the second assembly part.

Description

Clamp

Technical Field

The invention belongs to the technical field of auxiliary tools of medical instruments, and particularly relates to a clamp.

Background

An intravascular blood pump, designed for percutaneous insertion into a patient's blood vessel, may be advanced into the patient's heart along the blood vessel to function as a left ventricular assist device or a right ventricular assist device. Thus, an intravascular blood pump may also be referred to as an intracardiac blood pump.

The intravascular blood pump includes an impeller and a motor that drives the impeller to rotate. The stator of the motor comprises a plurality of magnetic conductive posts and a coil winding surrounding the periphery of each magnetic conductive post, wherein the coil winding creates a rotating magnetic field for driving the impeller so as to rotate the impeller around the axis of the impeller. When the impeller rotates, blood is transported from the blood inlet port to the blood outlet port of the intravascular blood pump.

Each magnetic conductive column comprises a guide rod and a pole shoe connected to one end of the guide rod, and the guide rod is of an elongated structure due to the small size of the pole shoe, so that the pole shoe is difficult to accurately position on the guide rod during assembly.

Disclosure of Invention

The invention aims to provide a clamp, which aims to solve the technical problem that a guide rod and a pole shoe are difficult to assemble in accurate alignment in the prior art.

The invention is achieved by a clamp for assembling a first fitting with a second fitting, the clamp comprising:

the positioning base is provided with a first limiting structure for placing the first assembly part;

the fixing mechanism comprises a connecting body connected to the positioning base, and a second limiting structure for placing the second assembly part is arranged on the connecting body;

the pushing mechanism comprises a main body part and a clamping part connected to the main body part, wherein the main body part is slidably connected to the connecting body and can move towards or away from the positioning base, the main body part is used for pushing against the second assembly part so that the second assembly part is abutted to the first assembly part, when the main body part moves towards the positioning base, the clamping part can at least partially cover the second assembly part, and the clamping part and the positioning base are arranged at intervals and are formed with channels.

In one embodiment, the first limiting structure is a first limiting groove, the second limiting structure is a second limiting groove, the second limiting groove extends along a direction perpendicular to the bottom surface of the first limiting groove, and the first limiting groove is located on an extension line of the second limiting groove.

In one embodiment, a side wall of the first limiting groove is provided with a clearance groove, and the clearance groove extends to a notch of the first limiting groove;

or, the positioning base is further provided with a guide groove, the guide groove penetrates through the side wall of the first limiting groove and the side wall surface of the positioning base, and the guide groove is gradually widened along the direction facing the side wall surface of the positioning base.

In one embodiment, the end surface of the connecting body opposite to the clamping part is a mounting surface, the second limiting groove is arranged on the mounting surface, a through hole penetrating through the connecting body is further formed in the mounting surface, and the through hole is communicated with the second limiting groove.

In one embodiment, the fixing mechanism is further provided with a guide rail, and the guide rail extends along a direction perpendicular to the bottom surface of the first limiting groove;

the pushing mechanism further comprises a sliding piece connected to the main body part, and the sliding piece extends into the guide rail and is in sliding connection with the guide rail.

In one embodiment, a third limiting structure is arranged on an end face of the clamping portion opposite to the second limiting structure, and when the third limiting structure moves to be opposite to the second limiting structure, the third limiting structure and the second limiting structure can form an accommodating space for accommodating the second assembly part in a surrounding mode.

In one embodiment, the clamp further comprises an elastic mechanism, wherein the elastic mechanism comprises a limit column and an elastic piece sleeved outside the limit column;

one end of the limiting column is connected to the fixing mechanism, the pushing mechanism is movably sleeved outside the limiting column, and the pushing mechanism is positioned between the elastic piece and the fixing mechanism; the limiting column is provided with a blocking part, two ends of the elastic piece are respectively abutted against the blocking part and the ejection mechanism, and the elastic piece can apply elastic force towards the positioning base to the ejection mechanism.

In one embodiment, the fixing mechanism further comprises a fixing block connected with the connecting body, one end of the fixing block is connected with the limiting column, and the other end of the fixing block is connected to the positioning base.

In one embodiment, the pushing mechanism further comprises a limiting part connected to the main body part, a connecting hole is formed in the limiting part, a connecting groove is formed in the fixing block, and the limiting column penetrates through the connecting hole and is inserted into the connecting groove to be connected with the fixing block.

In one embodiment, one end of the fixing block extends out of the connecting body towards one side of the positioning base, and is connected with the positioning base, so that the connecting body and the positioning base are arranged at intervals.

Compared with the prior art, the invention has the technical effects that: the fixture realizes the positioning of the first assembly part by arranging the first limiting structure on the positioning base, realizes the positioning of the second assembly part by arranging the second limiting structure on the fixing mechanism, and pushes the second assembly part by the pushing mechanism which is slidably connected with the fixing mechanism, so that the second assembly part is in butt joint with the first assembly part, and when the pushing mechanism pushes the second assembly part, the clamping part of the pushing mechanism at least partially covers the second assembly part, so that the second assembly part is positioned between the clamping part and the connecting body to limit the second assembly part, thereby realizing the accurate alignment assembly of the first assembly part and the second assembly part. And a channel is arranged between the clamping part and the positioning base, and the channel can expose the joint of the first assembly part and the second assembly part after the first assembly part and the second assembly part are aligned, so that the first assembly part and the second assembly part can be conveniently and fixedly connected.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the embodiments of the present invention or the drawings used in the description of the prior art, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of a magnetic conductive column according to an embodiment of the present invention;

FIG. 2 is a perspective view of a fixture according to an embodiment of the present invention;

FIG. 3 is a perspective view of a fixture according to an embodiment of the present invention at another view;

FIG. 4 is a cross-sectional view of a clamp provided by an embodiment of the present invention;

FIG. 5 is an exploded view of a clamp provided by an embodiment of the present invention;

FIG. 6 is a perspective view of a positioning base provided by an embodiment of the present invention;

FIG. 7 is a perspective view of a securing mechanism according to an embodiment of the present invention;

fig. 8 is a perspective view of a pushing mechanism according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "length," "thickness," "upper," "lower," "left," "right," "front," "rear," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.

Referring to fig. 1 to 3, the present invention provides a jig 100 for assembling a first fitting 91 and a second fitting 92.

The fixture 100 at least includes a positioning base 10, a fixing mechanism 20, and an ejector mechanism 30.

Referring to fig. 2, the positioning base 10 is provided with a first limiting structure 101, and the first fitting 91 is disposed on the first limiting structure 101.

Referring to fig. 3, the fixing mechanism 20 includes a connecting body 21 connected to the positioning base 10, a second limiting structure 214 is disposed on the connecting body 21, and the second fitting 92 is movably disposed on the second limiting structure 214.

Referring to fig. 4, the ejector mechanism 30 at least includes a main body 31 and a clamping portion 32 connected to the main body 31, the clamping portion 32 is disposed opposite to the connecting body 21, the main body 31 is slidably connected to the connecting body 21 and can move toward or away from the positioning base 10, the main body 31 can push the second fitting 92 to make one end of the second fitting 92 abut against the first fitting 91 during moving toward the positioning base 10, and when the main body 31 moves toward the positioning base 10, the clamping portion 32 moves along with the main body 31 and can cover at least part of the second fitting 92, that is, the second fitting 92 is located between the clamping portion 32 and the connecting body 21. The clamping portion 32 is spaced from the positioning base 10, and a channel 60 is formed, and the channel 60 can expose the connection portion between the first fitting 91 and the second fitting 92 after the first fitting 91 and the second fitting 92 are aligned.

The fixture 100 achieves positioning of the first assembly member 91 by arranging the first limiting structure 101 on the positioning base 10, achieves positioning of the second assembly member 92 by arranging the second limiting structure 214 on the fixing mechanism 20, and achieves accurate alignment assembly of the first assembly member 91 and the second assembly member 92 by pushing the second assembly member 92 against the first assembly member 91 through the pushing mechanism 30 sliding on the fixing mechanism 20, wherein when the pushing mechanism 30 pushes against the second assembly member 92, the clamping part 32 of the pushing mechanism 30 covers at least part of the second assembly member 92, so that the second assembly member 92 is located between the clamping part 32 and the connecting body 21 to limit the second assembly member 92.

When the main body 31 pushes against the second fitting 92 to make the second fitting 92 abut against the first fitting 91, the channel 60 is provided between the clamping portion 32 and the positioning base 10, and the channel 60 exposes the connection portion between the first fitting 91 and the second fitting 92, so as to facilitate the subsequent fixed connection, such as laser welding or bonding, between the first fitting 91 and the second fitting 92.

In this embodiment, the fixture 100 is used for assembling the magnetic conductive column 90, please refer to fig. 1, the magnetic conductive column 90 includes a guide rod 92 and a pole shoe 91, wherein the pole shoe 91 is a first assembly 91, the guide rod 92 is a second assembly 92, and the fixture 100 can accurately connect the pole shoe 91 to one end of the guide rod 92 when in use.

The structure of the jig 100 is specifically described as follows.

Referring to fig. 5, the fixture 100 is used for assembling the pole piece 91 and the guide rod 92 in a positioning manner, and the fixture 100 at least includes a positioning base 10, a fixing mechanism 20, an ejector mechanism 30 and an elastic mechanism 40.

In fig. 5, the x-direction is the extending direction of the fixing mechanism 20, i.e., the length direction thereof; the y direction is the thickness direction of the fixing mechanism 20, and is perpendicular to the x direction; the z-direction is perpendicular to the x-direction and the y-direction. With reference to the fixing mechanism 20, the positioning base 10 and the elastic mechanism 40 are disposed on both sides of the fixing mechanism 20 along the x direction, and the pushing mechanism 30 is disposed on one side of the fixing mechanism 20 along the y direction.

Referring to fig. 5 and 6, the positioning base 10 has a substantially plate-shaped structure with a positioning surface 111 and a sidewall surface 112, the positioning surface 111 is an end surface of the positioning base 10 facing the fixing mechanism 20, and the sidewall surface 112 is connected to the positioning surface 111 and is disposed around the positioning surface 111. The positioning surface 111 is preferably planar and perpendicular to the x-direction.

The positioning base 10 is provided with a first limiting structure 101, in this embodiment, the first limiting structure 101 is a first limiting groove 101, the first limiting groove 101 is located on the positioning surface 111, and the pole shoe 91 is disposed in the first limiting groove 101. Preferably, the groove bottom surface of the first limit groove 101 is perpendicular to the x-direction so that the central axis of the pole piece 91 disposed in the first limit groove 101 is parallel to the x-direction.

It should be noted that, the present embodiment is not limited to the specific structure of the first limiting structure 101, as long as the pole piece 91 can be positioned therein, and the pole piece 91 is prevented from moving randomly. For example, in other embodiments, the first limiting structure 101 may be a clamping structure such as a mechanical claw, on which the pole piece 91 is placed such that the central axis of the pole piece 91 is parallel to the x-direction.

The positioning base 10 is further provided with a fixing hole 103 and an alignment hole 104, and the fixing hole 103 and the alignment hole 104 are respectively matched with fasteners (not shown) such as bolts or pins, so that the positioning base 10 is fixedly connected with the fixing mechanism 20. At least one fixing hole 103 and at least one alignment hole 104 may be formed, and both the fixing hole 103 and the alignment hole 104 may be disposed through each other. In the embodiment shown in fig. 6, the number of the fixing holes 103 and the alignment holes 104 is two, the two fixing holes 103 are symmetrically arranged along the z direction, the two alignment holes 104 are symmetrically arranged along the z direction, and the central axes of each fixing hole 103 and each alignment hole 104 are parallel to the x direction.

The first limiting groove 101 is adapted to the pole shoe 91 to position the pole shoe 91. Optionally, the depth of the first limiting groove 101 is smaller than the thickness of the pole shoe 91, so that the surface 911 (see fig. 1) to be connected of the pole shoe 91 protrudes from the positioning surface 111, so that the pole shoe 91 is fixedly connected with the guide rod 92 in the later stage. Wherein the thickness of the pole shoe 91 is the thickness in the x-direction. The first limit groove 101 may be provided in plurality to achieve positioning of the plurality of pole shoes 91.

The pole piece 91 is often held by a holding tool such as a robot, and the positioning base 10 is provided with a clearance groove 1021 or a guide groove 1022.

Referring to fig. 6, a side wall of a first limiting groove 101 is concavely provided with a clearance groove 1021, the clearance groove 1021 extends to a notch of the first limiting groove 101 along the x direction, and the clearance groove 1021 can be used for avoiding clamping tools such as a manipulator.

Because the volume of the pole shoe 91 is small, when the pole shoe 91 is positioned in the first limiting groove 101, if the surface 911 to be connected approaches the positioning surface 111, the connection between the pole shoe 91 and the guide rod 92 is not easy to operate, for example, when laser welding is performed subsequently, the welding spot is easy to strike the side wall surface 112 of the positioning base 10. Therefore, referring to fig. 6, the positioning base 10 is further provided with a guide groove 1022, where the guide groove 1022 penetrates through the side wall of the first limiting groove 101 and the side wall surface 112 of the positioning base 10, so that the guide groove 1022 can provide a space for avoiding for external welding or bonding equipment, so as to facilitate the subsequent fixed connection between the pole shoe 91 and the connection portion of the guide rod 92. Meanwhile, the guide groove 1022 can also be used for avoiding clamping tools such as a mechanical arm and the like, so as to facilitate taking and placing the pole shoe 91. The guide grooves 1022 are gradually widened toward the side wall surface of the positioning base 10. The opening of the clearance groove 1021 facing the side wall surface 112 of the positioning base 10 is large, so that the operation of tools such as external welding or bonding equipment is facilitated.

In the embodiment shown in fig. 6, the number of the first limiting grooves 101 is three, one limiting groove 101 is provided with a clearance groove 1021, and the other two first limiting grooves 101 are respectively provided with a guide groove 1022. It will be appreciated that in other embodiments, the number of first limiting grooves 101 may be set to one, two or more as desired; alternatively, in other embodiments, only the avoidance grooves 1021 or only the guide grooves 1022 are provided on the sidewalls of the first limiting grooves 101.

Referring to fig. 7, the fixing mechanism 20 at least includes a connecting body 21 and a fixing block 22 connected to each other.

Referring to fig. 5 and 7, the connection body 21 has a substantially plate-like structure, an end surface of the connection body 21 opposite to the main body 31 of the ejector mechanism 30 is a mounting surface 211, and the mounting surface 211 is perpendicular to a thickness direction of the connection body 21, which is a y direction shown in fig. 5.

The connecting body 21 is provided with a second limiting structure 214 on the mounting surface 211, and the guide rod 92 is movably arranged on the second limiting structure 214.

In the present embodiment, the second limiting structure 214 is a second limiting groove 214, the second limiting groove 214 is a sliding groove structure, and the guide rod 92 is movably disposed in the sliding groove structure. Each first limiting groove 101 is located on the extending line of the corresponding second limiting groove 214, so when the main body 31 pushes against the guide rod 92 disposed in the second limiting groove 214, one end of the guide rod 92 can be abutted against the pole shoe 91 disposed in the first limiting groove 101.

In this embodiment, the central axis of the second limiting groove 214 is parallel to the x direction, and the central axis of the guide rod 92 disposed in the second limiting groove 214 is also parallel to the x direction; meanwhile, in this embodiment, the bottom surface of the first limiting groove 101 is perpendicular to the x direction, and the central axis of the pole shoe 91 disposed in the first limiting groove 101 is also parallel to the x direction; therefore, when the guide rod 92 abuts against the pole piece 91, the central axis of the guide rod 92 may be parallel or coincident with the central axis of the pole piece 91, thereby achieving accurate alignment assembly of the guide rod 92 and the pole piece 91. In addition, the second limiting groove 214 can limit the guide rod 92, and since the central axis of the second limiting groove 214 is parallel to the x direction, the guide rod 92 can only move towards or away from the positioning base 10 along the x direction, so that the alignment precision of the guide rod 92 and the pole shoe 91 can be further improved.

The cross-sectional shape and size of the second limiting groove 214 are adapted to the contour of the outer circumference of the guide rod 92, so that when the guide rod 92 is placed in the first limiting groove 214, the inner wall of the first limiting groove 214 can be completely attached to the outer circumference of the guide rod 92. For example, when the guide bar 92 has a cylindrical structure, the cross-sectional shape of the second limiting groove 214 is arc-shaped.

It should be noted that, the specific structure of the second limiting structure 214 is not limited in this embodiment, as long as the second limiting structure 214 can limit the guide rod 92, so that the guide rod 92 can only move towards or away from the positioning base 10. For example, in other embodiments, the second limiting structure 214 may be a semicircular clasp structure protruding on the mounting surface 211, where the central axis of the second limiting structure 214 is parallel to the x-direction, and the central axis of the guide rod 92 disposed in the second limiting structure 214 is parallel to the x-direction.

The connecting body 21 is further provided with a through hole 215 penetrating the connecting body 21 along the y direction on the mounting surface 211, and the through hole 215 is communicated with the second limiting groove 214. The through hole 215 can facilitate the taking and placing of the guide rod 92 in the second limiting groove 214.

The connection body 21 is further provided with a sliding groove 216 on the mounting surface 211, and as shown in fig. 8, the ejector mechanism 30 includes a sliding portion 34 connected to the main body 31, and the sliding portion 34 extends into the sliding groove 216 and is slidably connected to the sliding groove 216. The extending direction of the sliding groove 216 is the same as that of the second limiting structure 214, and both extend along the x direction, so that the pushing mechanism 30 can move toward or away from the positioning base 10 along the x direction. The shape and size of the sliding portion 34 are adapted to the shape and size of the sliding groove 216, so that the sliding portion 34 can be prevented from shaking in the sliding groove 216 to affect the movement of the ejector mechanism 30.

Further, the inner wall of the sliding groove 216 is provided with a guide rail 217, and the sliding portion 34 is provided with a sliding member 341 fitted with the guide rail 217, the sliding member 341 being slidably coupled into the guide rail 217. When the sliding member 341 is located in the guide rail 217, the guide rail 217 can limit the sliding member 341 to move in other directions, so that the sliding member 341 can only move toward or away from the positioning base 10 along the x direction, i.e., the main body 31 can only push the guide rod 92 along the x direction, thereby improving the assembly accuracy of the guide rod 92 and the pole shoe 91.

Referring further to fig. 5 and 7, the fixing block 22 has a generally cylindrical structure with its central axis parallel to the x-direction. The connection body 21 is connected to the fixing block 22, and is connected to the positioning base 10 and the elastic mechanism 40 by the fixing block 22.

In the embodiment shown in fig. 7, the number of the fixing blocks 22 is two, the two fixing blocks 22 are separately arranged at two sides of the connecting body 21 along the z direction, and the fixing blocks 22 and the connecting body 21 are in an integral structure. The central axis of each fixing block 22 is parallel to the x direction, and has a first connecting end 212 and a second connecting end 213 opposite to each other, the first connecting end 212 is connected to the positioning base 10, and the second connecting end 213 is connected to the elastic mechanism 40. Preferably, the first connecting end 212 of the fixing block 22 extends towards one side of the positioning base 10 and extends out of the connecting body 21, such that a gap 70 (as shown in fig. 4) exists between the connecting body 21 and the positioning base 10, the gap 70 exposes the connection portion between the guide rod 92 and the pole shoe 91, so that the subsequent fixing operation of the guide rod 92 and the pole shoe 91 can be facilitated, and the gap 70 can also facilitate the taking and placing of the guide rod 92.

As shown in fig. 5, a connecting groove 203 is formed on an end surface of the second connecting end 213 of the fixing block 22, for connecting with the elastic mechanism 40. As shown in fig. 7, the end surface of the first connecting end 212 of the fixing block 22 is provided with a fixing slot 201 and an alignment slot 202 for connecting with the positioning base 10. The central axes of the fixing groove 201, the alignment groove 202 and the connecting groove 203 are parallel to the x direction.

Further, the fixing mechanism 20 further includes an alignment rod and a connecting rod (not shown) for connecting the fixing mechanism 20 and the positioning base 10. The alignment rod can be a positioning structure such as a positioning pin, and the connecting rod can be a threaded fastener such as a bolt or a screw.

As shown in fig. 6 and fig. 7, when the alignment rod passes through the alignment groove 202 and the alignment hole 104, the fixing hole 103 completely covers the fixing groove 201, so that the fixing hole 103 and the fixing groove 201 can be aligned accurately, and the alignment rod plays a role in positioning and guiding; after the alignment of the fixing groove 201 and the fixing hole 103 is completed, the connecting rod is inserted into the fixing groove 201 and the fixing hole 103, so that the positioning base 10 and the fixing mechanism 20 can be quickly and fixedly connected. Specifically, the fixing groove 201 is provided with at least one corresponding to the fixing holes 103, and the alignment groove 202 is provided with at least one corresponding to the alignment holes 104. In this embodiment, two fixing slots 201, two alignment slots 202, two fixing holes 103 and two alignment holes 104 are respectively formed, each fixing block 22 is provided with one fixing slot 201 and one alignment slot 202, the fixing holes 103 are disposed on the positioning base 10 and correspond to the corresponding fixing slots 201, and the alignment holes 104 are disposed on the positioning base 10 and correspond to the corresponding alignment slots 202.

In other embodiments, the connecting body 21 may also be integrally formed with the positioning base 10. In other embodiments, the connecting body 21 may be fixedly connected to the fixing block 22 by a snap or a screw structure.

Referring to fig. 4, 5 and 8, the ejector mechanism 30 at least includes a main body 31, a clamping portion 32, a limiting portion 33 and a sliding portion 34.

The main body 31 has a substantially plate-like structure and is disposed opposite to the mounting surface 211 of the connection body 21. The end surface of the main body 31 facing the positioning base 10 is a first end surface 311, and the first end surface 311 is used for pushing against the guide rod 92 disposed on the second limiting structure 214. Preferably, the first end surface 311 is perpendicular to the x direction, and the end surface of the guide rod 92 abutting against the first end surface 311 is also perpendicular to the x direction, so as to facilitate pushing.

The clamping portion 32 has a substantially plate-like structure, is connected to the first end surface 311 of the main body 31, extends toward the side close to the positioning base 10, and the clamping portion 32 protrudes from the first end surface 311 of the main body 31. The clamping portion 32 is opposite to the connection body 21 and is disposed at a distance from the connection body 21, and the guide rod 92 is clamped between the clamping portion 32 and the connection body 21. The clamping part 32 can move towards or away from the positioning base 10 along with the main body part 31, when the main body part 31 moves towards the positioning base 10, the distance between the main body part 31 and the positioning base 10 becomes smaller, and the guide rod 92 moves towards the positioning base 10 along with the movement of the main body part 31 due to the pushing action of the main body part 31 on the guide rod 92, so that the guide rod 92 is abutted against the pole shoe 91, and at the moment, the second limiting structure 214 on the connecting body 21 plays a guiding role on the guide rod 92. The clamping portion 32 moves along with the movement of the main body 31, and covers the guide rod 92 when the main body 31 pushes against the guide rod 92. That is, the guide rod 92 is located between the clamping portion 32 and the connecting body 21, and the guide rod 92 can only move along with the main body 31 toward the positioning base 10 under the common limitation of the connecting body 21 and the clamping portion 32.

Referring to fig. 8, the end surface of the clamping portion 32 opposite to the connecting body 21 is a cover surface 301, and the cover surface 301 is attached to or spaced from the mounting surface 211 of the connecting body 21. The cover surface 301 is provided with a third limiting structure 321, and the third limiting structure 321 is matched with the second limiting structure 214 to limit the guide rod 92 between the third limiting structure 321 and the second limiting structure 214.

In the embodiment shown in fig. 8, the third limiting structure 321 is a third limiting groove 321, and the third limiting groove 321 and the second limiting groove 214 extend in the same direction, and all extend along the x direction. When the main body 31 moves toward the positioning base 10, the clamping portion 32 can move from outside the second limiting groove 214 to a position opposite to the second limiting groove 214 so as to cover the guide rod 92. When the third limiting groove 321 moves to the relative position of the second limiting groove 214, the notch of the third limiting groove 321 is opposite to the notch of the second limiting groove 214, and the third limiting groove 321 and the second limiting groove 214 enclose an accommodating space 50 for accommodating the guide rod 92 (see fig. 4). When the guide rod positioning device is used, the main body 31 is firstly slid away from the positioning base 10 until the clamping part 32 is positioned outside the second limiting groove 214, or the distance between the clamping part 32 and the positioning base 10 is larger than the length of the guide rod 92, at the moment, the guide rod 92 is placed in the second limiting groove 214, then the main body 31 is slid towards the direction of the positioning base 10 until the main body 31 is pushed against the guide rod 92, at the moment, the guide rod 92 is positioned in the accommodating space 50, the main body 31 is continuously moved until the guide rod 92 is pushed against the pole shoe 91, at the moment, the main body 31 and the positioning base 10 axially clamp the guide rod 92 and the pole shoe 91 together along the guide rod 92. The accommodation space 50 improves the positioning and guiding action of the guide bar 92, further limiting the shake of the guide bar 92. The length of the first end 311 of the clamping portion 32 protruding from the main body 31 is smaller than the length of the guide rod 92, so that the main body 31 and the positioning base 10 can jointly clamp the guide rod 92. When the first limiting grooves 101 are provided in plurality, the second limiting grooves 214 are also provided in plurality, so as to correspond to the number of the first limiting grooves 101 one by one, and the guide rods 92 accommodated in each accommodating space correspond to the pole shoes 91 respectively.

It should be noted that, the specific structure of the third limiting structure 321 is not limited in this embodiment, as long as the third limiting structure 321 can limit the guide rod 92, so that the guide rod 92 can only move towards or away from the positioning base 10. For example, in other embodiments, the third limiting structure 321 may also be a semicircular clasp structure protruding on the cover surface 301.

Referring further to fig. 8, the end surface of the main body 31 facing the mounting surface 211 of the connection body 21 is a second end surface 312, and the sliding portion 34 is connected to the second end surface 312 and extends toward a side close to the connection body 21. The sliding portion 34 protrudes from the second end surface 312 and extends into the sliding groove 216 (shown in fig. 7) of the mounting surface 211 to slidably connect with the sliding groove 216. The slide portion 34 is provided with a slide member 341, and the slide member 341 is connected to the guide rail 217 of the slide groove 216 and slidably connected to the guide rail 217. When the sliding member 341 is located in the guide rail 217, the guide rail 217 may restrict the movement of the sliding member 341 in other directions, so that the sliding member 341 can only move toward or away from the positioning base 10 along the extending direction of the guide rail 217, i.e., the main body 31 can only push against the guide rod 92 along the extending direction of the guide rail 217.

In the embodiment shown in fig. 8, the sliding members 341 include two sliding members 341, and the two sliding members 341 are respectively protruding on two sides of the sliding portion 34 along the z direction, and each sliding member 341 has a substantially elongated structure and extends along the x direction. The guide rails 217 also include two guide rails 217 disposed on both side walls of the sliding groove 216 along the z-direction, each guide rail 217 extending along the x-direction, and the cross section of the guide rail 217 is arc-shaped.

In this embodiment, the connection body 21 is provided with a sliding groove 216, a guide rail 217 is disposed in the sliding groove 216, a sliding portion 34 matching with the sliding groove 216 is disposed on the main body 31, and a sliding piece 341 matching with the guide rail 217 is disposed on the sliding portion 34, so as to realize sliding connection between the fixing mechanism 20 and the ejector mechanism 30. Note that, the specific sliding structure between the fixing mechanism 20 and the ejector mechanism 30 is not limited in this embodiment, as long as the sliding structure can move the ejector mechanism 30 toward or away from the positioning base 10. For example, in other embodiments, the guide rail 217 is disposed on the bottom wall of the sliding groove 216 and extends along the x-direction, the sliding member 341 is convexly disposed on the end surface of the sliding portion 34 facing the mounting surface 211, the cross section of the guide rail 217 is a trapezoid groove or a T-shaped groove, the sliding member 341 is a trapezoid protrusion or a T-shaped protrusion, which is adapted to the shape and size of the guide rail 217, and the sliding member 341 is slidably embedded in the guide rail 217. Alternatively, in other embodiments, the connecting body 21 may not be provided with the sliding groove 216, the main body 31 may not be provided with the sliding portion 34, the fixing block 22 of the fixing mechanism 20 may be provided with a rail extending in the x direction, and the main body 31 may be provided with a slider slidably connected to the rail, thereby slidably connecting the fixing mechanism 20 and the ejector mechanism 30.

Referring to fig. 8, the limiting portion 33 is connected to an end surface of the main body 31 facing away from the positioning base 10 and extends along the z direction, the limiting portion 33 can abut against the fixing mechanism 20, preferably abut against the fixing block 22 of the fixing mechanism 20 when the main body 31 moves toward the positioning base 10, and the pushing mechanism 30 cannot move toward the positioning base 10 when the limiting portion 33 abuts against the fixing mechanism 20. By providing the limiting portion 33 on the main body portion 31, the stability of the connection of the ejector mechanism 30 and the fixing mechanism 20 can be improved.

The limiting portion 33 may be provided with at least one connecting hole 331 penetrating in the x direction, and the elastic mechanism 40 is fixedly connected with the fixing mechanism 20 through the connecting hole 331.

The limiting portion 33 may further be provided with a hand piece 332, where the hand piece 332 has a substantially block-shaped structure, and the hand of the operator may press on the hand piece 332 to facilitate moving the pushing mechanism 30. Specifically, the hand pieces 332 include two hand pieces 332, and the two hand pieces 332 are provided on both sides of the stopper portion 33 in the z-direction.

Referring to fig. 2 and 3, the elastic mechanism 40 is used to apply an elastic force to the ejector mechanism 30 toward the positioning base 10. The elastic mechanism 40 may be connected to the fixing mechanism 20 or the positioning base 10 so as to apply force to the ejector mechanism 30. In the present embodiment, the elastic mechanism 40 is connected to the fixing mechanism 20. The ejector mechanism 30 can automatically move towards the positioning base 10 under the action of the elastic force of the elastic mechanism 40, so that occupation of manpower is omitted, meanwhile, clamping force can be continuously applied to the guide rod 92, the guide rod 92 and the pole shoe 91 are prevented from being separated, and the follow-up pole shoe 91 and the guide rod 92 are convenient to connect.

Referring to fig. 2, specifically, the elastic mechanism 40 includes a limiting post 41 and an elastic member 43 sleeved outside the limiting post 41.

One end of the limiting post 41 is connected to the fixing mechanism 20, specifically, the second connecting end 213 (shown in fig. 5) of the fixing block 22 of the fixing mechanism 20, the ejector mechanism 30 is movably sleeved outside the limiting post 41, and the ejector mechanism 30 is located between the elastic member 43 and the fixing mechanism 20. Specifically, the limiting portion 33 is provided with a connecting hole 331 penetrating in the x direction, and the limiting post 41 passes through the connecting hole 331 to be connected with the fixed block 22. In this embodiment, the limiting post 41 is inserted into the connecting slot 203 of the second connecting end 213 of the fixing block 22. The limit posts 41 act as guides for the movement of the ejector mechanism 30.

The stopper portion 42 is provided on the stopper post 41, and both ends of the elastic member 43 respectively abut against the stopper portion 42 and the stopper portion 33 of the ejector mechanism 30, and the elastic member 43 applies an elastic force toward the positioning base 10 to the ejector mechanism 30. The elastic force is a pushing force in this embodiment, and may be a pulling force in other embodiments. The stopper 41 can guide the elastic member 43 to prevent the elastic member 43 from twisting. The blocking portion 42 plays a limiting role on the elastic member 43, and prevents the elastic member 43 from being separated from the limiting post 41. The elastic member 43 may be fixedly connected to the blocking portion 42 and the ejector mechanism 30, respectively, or may be simply abutted against each other. The blocking portion 42 is located at one end of the limiting post 41 away from the connecting body 21, the elastic member 43 may be a spring, the spring is sleeved on the limiting post 41, one end of the spring abuts against an end face of the blocking portion 42 facing the pushing mechanism 30, and the other end abuts against the pushing mechanism 30.

Under the action of no external force, the elastic member 43 can be in a compressed state to apply force to the limiting portion 33, so that the limiting portion 33 abuts against the second connecting end 213 of the fixed block 22; alternatively, the elastic member 43 is in a natural state, and does not apply a force to the ejector mechanism 30. When the ejector mechanism 30 moves away from the positioning base 10 under the action of an external force, the elastic member 43 is compressed and applies an elastic force to the ejector mechanism 30 to move toward the positioning base 10; when the external force is removed, the pushing mechanism 30 moves towards the positioning base 10 under the action of the elastic force of the elastic member 43, if the guide rod 92 is placed in the second limiting groove 214, the pushing mechanism 30 can move to the main body 31 and the positioning base 10 to clamp the guide rod 92 and the pole shoe 91 together under the action of the elastic force, and if no guide rod 92 is placed, the pushing mechanism 30 moves to the second connecting end 213 abutting against the fixed block 22 under the action of the elastic force. In other embodiments, the ejector mechanism 30 may not have the connection hole 331, so long as the elastic member 43 abuts against the ejector mechanism 30 and can apply an elastic force to the ejector mechanism 30.

When the fixture 100 of the present embodiment is used, the plurality of pole shoes 91 may be placed in the corresponding first limiting grooves 101, and then the pushing mechanism 30 is driven to move away from the positioning base 10 by manual or external force, and the elastic member 43 is compressed. When the distance between the end surface of the clamping part 32 facing the positioning base 10 and the pole shoe 91 is greater than the length of the guide rod 92, the guide rods 92 are respectively placed in the corresponding second limiting grooves 214, then the hand is loosened or the external force is removed, the pushing mechanism 30 slides towards the positioning base 10 under the action of the elastic force of the elastic piece 43, the clamping part 32 gradually covers the guide rods 92, the guide rods 92 gradually enter the third limiting grooves 321, at this time, the guide rods 92 are clamped in the accommodating spaces 50 formed by the second limiting grooves 214 and the third limiting grooves 321, when the pushing mechanism 30 slides until the main body part 31 is abutted against the end surface of the guide rods 92 far away from the positioning base 10, the main body part 31 starts to push the guide rods 92 to move towards the positioning base 10 until the guide rods 92 are abutted against the surface 911 to be connected of the pole shoe 91, at this time, the main body part 31 and the positioning base 10 jointly clamp the guide rods 92, and thus accurate alignment assembly of the pole shoes 91 and the guide rods 92 is realized. Then, the connection between the pole shoe 91 and the guide rod 92 can be welded or bonded through the channel 60 between the clamping portion 32 and the positioning base 10, so as to complete the assembly of the magnetic conductive column 90. After the fixed connection between the pole shoe 91 and the guide rod 92 is completed, the push mechanism 30 can be driven by hand or external force to move away from the positioning base 10, the main body 31 is separated from the guide rod 92 until the clamping part 32 and the guide rod 92 are dislocated in the x direction, and the magnetic conductive column 90 is taken out. Finally, the pushing mechanism 30 moves towards the positioning base 10 under the action of the elastic force of the elastic member 43 when the hand is released or the external force is removed until the limiting portion 33 of the pushing mechanism 30 abuts against the second connecting end 213 of the fixing block 22 of the fixing mechanism 20, and the movement is stopped, so that the fixture 100 is restored to the initial state.

The foregoing description of the preferred embodiments of the present invention has been provided for the purpose of illustrating the general principles of the present invention and is not to be construed as limiting the scope of the invention in any way. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention, and other embodiments of the present invention as will occur to those skilled in the art without the exercise of inventive faculty, are intended to be included within the scope of the present invention.

Claims

1. A clamp for assembling a first fitting with a second fitting, the clamp comprising:

the pushing mechanism comprises a main body part and a clamping part connected with the main body part, the main body part is slidably connected with the connecting body and can move towards or away from the positioning base, the main body part is used for pushing the second assembly part to enable the second assembly part to be abutted to the first assembly part, when the main body part moves towards the positioning base, the clamping part can cover at least part of the second assembly part, and the clamping part is arranged at intervals with the positioning base and is formed with a channel; and

the elastic mechanism and the positioning base are respectively arranged at two sides of the fixing mechanism, and the elastic mechanism can apply elastic force moving towards the positioning base to the pushing mechanism.

2. The fixture of claim 1, wherein the first limiting structure is a first limiting groove, the second limiting structure is a second limiting groove, the second limiting groove extends in a direction perpendicular to a groove bottom surface of the first limiting groove, and the first limiting groove is located on an extension line of the second limiting groove.

3. The fixture of claim 2, wherein a side wall of the first limit groove is provided with a clearance groove, and the clearance groove extends to a notch of the first limit groove;

4. The fixture of claim 2, wherein an end surface of the connecting body opposite to the clamping portion is a mounting surface, the second limiting groove is formed in the mounting surface, a through hole penetrating the connecting body is further formed in the mounting surface, and the through hole is communicated with the second limiting groove.

5. The jig according to claim 2, wherein the fixing mechanism is further provided with a guide rail extending in a direction perpendicular to a groove bottom surface of the first limit groove;

6. The fixture of claim 1, wherein a third limiting structure is provided on an end surface of the clamping portion opposite to the second limiting structure, and the third limiting structure and the second limiting structure can form a containing space for containing the second assembly member when the third limiting structure moves to be opposite to the second limiting structure.

7. The fixture of claim 1, wherein the elastic mechanism comprises a limit post and an elastic piece sleeved outside the limit post;

8. The fixture of claim 7, wherein the securing mechanism further comprises a securing block coupled to the connecting body, one end of the securing block coupled to the limit post, and the other end of the securing block coupled to the positioning base.

9. The fixture of claim 8, wherein the ejector mechanism further comprises a limiting portion connected to the main body portion, a connecting hole is formed in the limiting portion, a connecting groove is formed in the fixing block, and the limiting post penetrates through the connecting hole and is inserted into the connecting groove to be connected with the fixing block.

10. The fixture of claim 8, wherein one end of the fixing block extends out of the connecting body toward one side of the positioning base and is connected to the positioning base such that the connecting body is spaced apart from the positioning base.