CN210909616U - Clamp structure capable of quickly replacing tool bit - Google Patents

Abstract

The utility model provides a clamp structure of quick replacement tool bit, it includes that pincers, two pedestals and two magnetism inhale the piece, and the pincers are established by two pincers body pivots and are connected and constitute, and two pincers bodies all have and hold portion and work portion, and two work portions have the mounting hole at the pincers wall, and the portion of holding of two pincers bodies can be held the drive and is close to relatively or keep away from in order to drive two pincers walls. The two seat bodies are provided with mounting parts and heads, each mounting part is internally provided with a containing groove capable of fixing the magnetic suction piece, each mounting part is arranged in the mounting hole and is blocked and positioned at two sides of the clamp wall by the heads and the blocking parts, each seat body is provided with a jack in a penetrating way and communicated with the containing groove, and the two heads are oppositely arranged on the two arranged clamp walls. The inserting part of the cutter head can be inserted into each jack to contact the magnetic attraction piece, so that the inserting part is attracted and positioned by magnetic force and can be pulled out by force application, and the cutter head can be quickly replaced.

Description

Clamp structure capable of quickly replacing tool bit

Technical Field

The utility model discloses a clamp especially indicates a clamp structure of quick replacement tool bit.

Background

As shown in fig. 1 to 5, each conventional pliers capable of being provided with a cutting head mainly comprises two pliers bodies 1 pivotally connected to each other, each pliers body 1 has a holding portion 2 and a working portion 3 at one end, the working portion 3 has a pliers wall 4 for mounting the cutting head 5 to perform an object holding operation, and the cutting head 5 is, for example, a combination of an anvil and a clamping block for mounting a pin buckle or a combination of a hole cutter and an anvil for punching a belt hole.

As shown in the clamp of fig. 1, a tool bit 5 is locked and fixed in a screw hole 7A of a clamp wall 4 by a screw thread 6A; as shown in fig. 2, the cutting head 5 is fixed after being clamped in the positioning part 7B of the pliers wall 4 by the conical column 6B; as shown in fig. 3, the cutting head 5 is fixed by the protruding column 6C being clamped in the positioning portion 7C by the rubber ring 8C; referring to the pliers shown in fig. 4, the locking pin 6D of the cutting head 5 is locked and fixed in the ring 7D. As shown in fig. 5, the clamp post 6E of the tool bit 5 is fixed by being clamped after passing through the clamp member 7E.

However, the above-described various conventional tool bit attachable pliers have the following problems:

1. the pliers shown in fig. 1, which require time to screw the thread 6A into the threaded hole 7A and to tighten it during installation, are the slowest to install the cutting head 5 in the above-mentioned prior art pliers.

2. In the pliers of fig. 2 to 4, although the installation time of the tool bit 5 is faster than the time of screwing the thread 6A to the screw hole 7A, the conical column 6B, the rubber ring 8C, and the ring sleeve 7D are respectively engaged with the positioning portion 7B, the convex column 6C, and the clamping column 6D, which may cause the wear of the contact portion of the components due to frequent use, and may cause the tool bit 5 to loosen from the pliers over time.

3. Although the clamp 7E can securely clamp the post 6E without releasing it, the clamp shown in fig. 5 has inconvenience in use because it takes time and effort to pull the clamp 7E open to release the post 6E when the bit 5 is to be removed.

4. In the existing pliers, if a spare bit 5 is arranged, the spare bit is usually placed in a tool box for accommodating the pliers, and the problem that the spare bit is inconvenient to carry together when only the pliers are carried is solved. Therefore, in some conventional pliers, in order to carry the spare bit 5, a screw hole (not shown) is formed in the pliers body 1, so that the bit 5 having the screw thread can be screwed to the pliers body 1. However, the additional processing of screw holes in the caliper body 1 causes a problem of an increase in the manufacturing cost of the caliper.

Therefore, how to solve the problem of above-mentioned current clamp, including tool bit 5 slow in the installation of clamp, or tool bit 5 not compact and easy pine take off in the installation of clamp, or tool bit 5 is detached inconveniently to and reserve tool bit 5 is along with the problem that the clamp carried, promptly the utility model discloses a key place.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a clamp structure of quick replacement tool bit makes the mode of the usable magnetism of tool bit and is located the clamp, but fast assembly and separation do benefit to the change tool bit.

An embodiment of the utility model provides a clamp structure of quick replacement tool bit, it includes a binding clip, two pedestals and two magnetism are inhaled the piece, the binding clip is established by two pincers body pivots and is connected and constitute, each pincers body has one and holds a portion, and has a work portion in the one end of holding a portion differently, two work portions have two and are face-to-face pincers walls, have two mounting holes to be relative setting respectively on two pincers walls, the portion of holding of two pincers bodies can be held the drive and is close to relatively or keep away from in order to drive two pincers walls. The two seat bodies are respectively provided with an installation part and a head part, the head part extends radially at one end of the installation part, each installation part is internally provided with a containing groove, each installation part is arranged in one installation hole, the head part and a blocking part positioned at the periphery of the installation part block and position at two sides of the arranged clamp wall, one end of each seat body with the head part axially penetrates through a jack to be communicated with the containing groove, and the two head parts are oppositely arranged on the two arranged clamp walls. The two magnetic parts are fixed in the containing groove respectively, the tool bit is provided with a plug-in part which can be magnetically attracted, the plug-in part can be inserted into each jack to contact the magnetic parts to be magnetically attracted and positioned, and the magnetic parts can be pulled out by force to be quickly replaced.

In a preferred embodiment, each seat body is provided with a step in the mounting part, the step is formed by the insertion hole being smaller than the accommodating groove, one end of each magnetic suction piece in the accommodating groove is abutted against the step, and the other end of each magnetic suction piece is blocked by a limiting part protruding into the accommodating groove so as to position each magnetic suction piece in each accommodating groove.

In a preferred embodiment, the mounting portion of each seat body is provided with a first annular groove and a second annular groove around the circumference, the axial length of the first annular groove and the radial depth of the second annular groove are greater than that of the first annular groove, the two ends of each seat body are pressed inwards to the first annular groove and then extruded and deformed to form the blocking portion, and the second annular groove is extruded and deformed to form the limiting portion.

In a preferred embodiment, each receiving slot penetrates through the mounting portion, each receiving slot is longer than the magnetic attraction piece to form an insertion section, the insertion section and the insertion hole of each seat body are located at two ends of the magnetic attraction piece, and the insertion section allows the tool bit to be inserted into the magnetic attraction piece through the insertion portion and to be magnetically attracted and positioned.

In a preferred embodiment, each magnetic member is a permanent magnet, and the insertion portion of the tool bit is made of an iron material capable of being magnetically attracted.

In a preferred embodiment, the two clamp bodies have a shaft hole, each shaft hole is adjacent to the working portion of the corresponding clamp body, the two shaft holes are symmetrically disposed at the two clamp bodies, a shaft member is inserted through each shaft hole, and the two shaft members are pivotally connected to the two clamp bodies at two ends of the same side of the corresponding clamp by a connecting member.

In a preferred embodiment, the connecting member is a plate body, the plate body is long and has two through holes adjacent to two ends, and the two shaft members are respectively pivoted with the plate body through the two through holes at two ends of the shaft member located at the same side of the pincer.

In a preferred embodiment, the elastic restoring member is disposed between the two forceps bodies, and when the holding portion of the two forceps bodies is released from the holding driving force, the elastic restoring member drives the holding portion of the two forceps bodies to expand so as to relatively move the two working portions away from each other.

In a preferred embodiment, the elastic restoring member is a torsion spring, and includes a ring portion and elastic arms extending from two ends of the ring portion, the ring portion is sleeved on the shaft member, and the two elastic arms respectively abut against inner sides of the two holding portions.

Borrow this, when wanting to assemble suitable tool bit in the utility model discloses a during clamp structure, as long as aim at the jack of pedestal and insert with the grafting portion of tool bit, grafting portion can be inhaled by magnetic force and fix a position when the piece is inhaled to the magnetism in the contact, alright operate two pincers body hold and make the tool bit that two pedestals were fixed a position be close to the centre gripping operation in order to carry out the article, and when will changing the tool bit, inhale with magnetic force because of grafting portion and magnetism, extract grafting portion from the jack to the tool bit application of force easily, in order to reach the efficiency of quick replacement tool bit.

In addition, when the spare tool bit is to be carried along with the clamp, the inserting section is arranged at one end, different from the jack, of the accommodating groove of the installing part, the inserting part can be inserted into the jack by the tool bit and is attracted and positioned by the magnetic attraction piece through the magnetic force, the spare tool bit can also be inserted into the inserting section through the inserting part and is attracted and positioned by the magnetic attraction piece through the magnetic force, so that the clamp does not need to be machined, the spare tool bit can be installed only through the arrangement that the inserting section is arranged on the base body, and the spare tool bit can be carried along with the clamp conveniently.

Drawings

FIG. 1 is a schematic representation of a prior art clamp configuration in a flat configuration for threadedly engaging a tool bit.

Fig. 2 is a schematic view of a plane structure of another prior art clamp structure for clamping a tool bit with a conical column.

Fig. 3 is a schematic view of another conventional clamp structure with a convex pillar clamped on a plane of a rubber ring.

Fig. 4 is a schematic view of another prior art clamping structure in a planar configuration with a clamping post engaged in a collar.

Fig. 5 is a schematic view of another prior art clamping structure in a planar configuration with a clamping member positioning a clamping post.

Fig. 6 is a perspective view of the clamp structure according to the first embodiment of the present invention, in which a bit is mounted, wherein the bit is a nail-fastening clamp group.

Fig. 7 is a partial cross-sectional view of fig. 6 taken along line 7-7.

Fig. 8 is a schematic view illustrating the clamp structure according to the first embodiment of the present invention, wherein the tool bits are mounted in the insertion holes and the insertion holes of the seat bodies.

Fig. 9 is a schematic structural view of the seat body of the first embodiment of the present invention having the first and second annular grooves in the installation portion before the blocking portion and the limiting portion are formed, and shows the magnetic attraction member in a separated configuration before being fixed to the accommodating groove.

Fig. 10 is a schematic view of the seat body of the first embodiment of fig. 9, in which the mounting portion is disposed in the mounting hole and the head portion is blocked by the clamp wall, and the magnetic member is disposed in the accommodating groove.

Fig. 11 is a schematic view of the two ends of the seat body of fig. 10 after the positioning of the caliper wall are pressed inward to form the blocking portion and the limiting portion.

Fig. 12 is a perspective view of the clamp structure of the second embodiment of the present invention with a bit mounted thereon, wherein the bit is a hole forming clamp set.

Description of the reference numerals

Reference numerals of the prior art

Grip part 2 of pincer body 1

Working part 3 clamp wall 4

Bit 5 screw thread 6A

Screw hole 7A and conical column 6B

Positioning part 7B convex column 6C

Positioning part 7C rubber ring 8C

6D ring sleeve 7D of clamping column

Clamping column 6E and clamping piece 7E

Reference numerals of the utility model

Clamp structure 100 clamp 10

Grip portion 12 of pincer body 11

Working part 13 jaw wall 14

Mounting hole 15 axle hole 16

Shaft 17 sheet 18

Torsion spring 19 with through hole 181

Collar 191 and spring arm 192

Seat 20 mounting part 21

Stopper 211 and stopper 212

First annular groove 213 and second annular groove 214

Head 22 receiving groove 23

Inserting section 231 jack 24

Step 25 magnetic attraction piece 30

Cutting head 40 insertion part 41

The fixture 50 has a tool bit 60.

Detailed Description

For the convenience of explanation, the present invention will be described with reference to the following embodiments. Various objects in the embodiments are depicted in terms of scale, dimensions, deformation, or displacement suitable for illustration, rather than in terms of actual component proportions, as previously described.

Referring to fig. 6 to 12, the present invention provides a clamp structure for quickly replacing a tool bit, the clamp structure 100 includes a clamp 10, two seat bodies 20 and two magnetic attraction members 30, and a tool bit 40 can be installed to perform a clamping operation, in which the tool bit 40 is exemplified by a button-fastener clamping set capable of installing a button fastener in a first embodiment, wherein:

the pliers 10 is formed by pivotally connecting two pliers bodies 11, each pliers body 11 has a holding portion 12 and a working portion 13, and the working portion 13 is located at an end of the pliers body 11 different from the holding portion 12. The working part 13 of each forceps body 11 is provided with a forceps wall 14, the forceps walls 14 of the two forceps bodies 11 are arranged oppositely, each forceps wall 14 is provided with a mounting hole 15, the two mounting holes 15 of the two forceps walls 14 are arranged oppositely, the holding parts 12 of the two forceps bodies 11 can be held and driven, for example, the two holding parts 12 are held by hands to be close, so that the two holding parts 12 are relatively close, and the two forceps walls 14 are also driven to be relatively close; the two grip portions 12 are held open so that the two grip portions 12 are relatively far apart, which also moves the two jaw walls 14 relatively far apart.

Each seat 20 has a mounting portion 21 and a head portion 22, the head portion 22 is located at one end of the mounting portion 21 and extends radially, so that the width of the head portion 22 is larger than that of the mounting portion 21, and each mounting portion 21 has a receiving slot 23 therein. When the seat bodies 20 are installed on the pliers 10, each seat body 20 is installed in the installation hole 15 of one pliers wall 14 by the installation part 21, and the installation part 21 has a stop part 211 on the periphery, and the head 22 and the stop part 211 are stopped and positioned on two sides of the installed pliers wall 14 (as shown in fig. 7). Each seat body 20 has an insertion hole 24, each insertion hole 24 is axially penetrated from one end of the seat body 20 having the head 22 and communicated with the accommodating groove 23, and the two heads 22 are oppositely arranged on the two jaw walls 14. The opposing arrangement is such that the two heads 22 of the two jaw walls 14 are oriented toward each other and the other head 22 is not limited to being directly opposite each other, but also allows for angular differences (e.g., angles resulting from the two jaw walls 14 tilting away from each other).

The magnetic members 30 are respectively fixed in the receiving slots 23 of a holder 20, the tool bit 40 has a plug portion 41, the plug portion 41 can be inserted into each insertion hole 24 until one end of the plug portion 41 contacts the magnetic member 30 in the receiving slot 23, so as to be magnetically held and positioned (as shown in fig. 8), and can be pulled out by force for quick replacement. In the present embodiment, each magnetic member 30 is a permanent magnet, and the inserting portion 41 is an iron material capable of being magnetically attracted.

In the present embodiment, each seat 20 has a step 25 in the installation portion 21, the step 25 is formed by the insertion hole 24 being smaller than the receiving groove 23, that is, the step 25 is formed by the diameter difference between the insertion hole 24 and the receiving groove 23 in the installation portion 21, one end of each magnetic attraction element 30 in the receiving groove 23 is abutted against the step 25, and the other end is blocked by a limiting portion 212 (as shown in fig. 7), the limiting portion 212 is protruded in the receiving groove 23, so as to position each magnetic attraction element 30 in each receiving groove 23.

In the embodiment, each receiving groove 23 penetrates through the mounting portion 21, and each receiving groove 23 is longer than the magnetic attraction member 30, so that the receiving groove 23 forms an inserting section 231 at a section outside the magnetic attraction member 30, the inserting section 231 and the inserting hole 24 of each seat 20 are located at two ends of the magnetic attraction member 30, and the inserting section 231 allows the tool bit 40 to be inserted into the magnetic attraction member 30 through the inserting portion 41 and is magnetically attracted and positioned (as shown in fig. 8).

In the present embodiment, as shown in fig. 6, the two pliers bodies 11 of the pliers 10 respectively have a shaft hole 16, each shaft hole 16 is located on the pliers body 11 adjacent to the working portion 13, and the two shaft holes 16 are symmetrically disposed at the positions of the two pliers bodies 11. A shaft member 17 is disposed through each shaft hole 16, and the two shaft members 17 are pivotally connected to the two forceps bodies 11 by a connecting member at two ends of the forceps 10 located at the same side, so that the two forceps bodies 11 can pivot relatively. Further, the connecting member is a plate 18 in the preferred embodiment, the plate 18 is elongated and has two through holes 181, the two through holes 181 are adjacent to two ends of the plate 18, and the two shaft members 17 are pivotally connected to the plate 18 through the two through holes 181 at two ends of the clamp 10 located on the same side.

In this embodiment, the elastic restoring member is further included between the two forceps bodies 11, so that when the holding portion 12 of the two forceps bodies 11 is released from the holding force, the elastic restoring member drives the holding portion 12 of the two forceps bodies 11 to open, and the two working portions 13 are relatively far away. Preferably, the return elastic member is a torsion spring 19, and includes a ring portion 191 and two elastic arms 192 (as shown in fig. 8), the two elastic arms 192 extend from two ends of the ring portion 191, the ring portion 191 is sleeved on a shaft 17 (one of the two shaft portions 17 is sleeved), and the two elastic arms 192 respectively abut against the inner sides of the two holding portions 12. Therefore, when no force is applied to the two grip portions 12, the two grip portions 12 are automatically opened by the elastic force of the two elastic arms 192.

The assembly of the clamp structure of the present invention, particularly the assembly and positioning of the seat 20 on the clamp arm 14, is further described below, in which the mounting portion 21 of each seat 20 is pre-provided with a first annular groove 213 and a second annular groove 214 (as shown in fig. 9), the axial length of the first annular groove 213 and the radial depth of the second annular groove 214 are greater than that of the first annular groove 213, the position of the mounting portion 21 of the first annular groove 213 corresponds to the formed retaining portion 211, and the position of the mounting portion 21 of the second annular groove 214 corresponds to the formed limiting portion 212. Before or after the two pliers bodies 11 are pivotally connected to form the pliers 10, each mounting portion 21 is placed in the corresponding mounting hole 15 until the head 22 is stopped at one side of the arranged pliers wall 14, each magnetic member 30 is placed in the corresponding accommodating groove 23 until one end of each magnetic member abuts against the step 25 (as shown in fig. 10), then the clamp 50 is used to apply axial pressure to the two ends of each seat body 20 (as shown in fig. 11) inwards until the first annular groove 213 is deformed by extrusion to form the stopper 211 and the other end of the arranged pliers wall 14 stops, so as to assemble and position each seat body 20 on the arranged pliers wall 14, and the second annular groove 214 is deformed by extrusion to form the stopper 212 and the other end of the arranged magnetic member 30 stops, so as to assemble and position each magnetic member 30 in the arranged accommodating groove 23.

Therefore, when the cutting head 40 is to be mounted on the pliers 10 to clamp an object, the operator only needs to hold the cutting head 40 and align the inserting portion 41 with the insertion hole 24 to insert until one end of the inserting portion 41 contacts the magnetic member 30 and is attracted by the magnetic force to be positioned, and as long as the magnetic force of the magnetic member 30 does not cancel the leg, the inserting portion 41 is always attracted by the magnetic member 30 and cannot be separated from the seat 20. If the user wants to replace the tool bit 40 from the base 20, the magnetic force of the magnetic member 30 attracting the insertion portion 41 can be removed by hand force, and at this time, the user only needs to hold the tool bit 40 and slightly apply force to pull the insertion portion 41 outward, so as to separate the magnetic force of the magnetic member 30 and separate the tool bit from the base 20, and the user can complete the assembly by inserting the insertion portion 41 of another tool bit 40 into the insertion hole 24.

In addition, if a spare cutting head 40 is to be carried with the pliers 10, the inserting portion 41 of the cutting head 40 is inserted from the inserting section 231, and one end of the spare cutting head 40 is attracted by the magnetic attraction member 30, so that the spare cutting head 40 can be magnetically attracted and positioned on the base 20, and can be carried with the pliers 10.

The characteristics of the present invention can be easily found from the above description:

1. if the cutting head 40 is assembled to the clamp structure 100 of the present invention, the operator only needs to align the inserting portion 41 of the cutting head 40 with the insertion hole 24 and insert the cutting head 40 into the seat 20, and one end of the inserting portion 41 can be magnetically attracted and positioned when contacting the magnetic attraction member 30, and the operator can operate the holding portion 12 of the two clamp bodies 11 to make the cutting head 40 positioned by the two seat 20 relatively close to perform the object clamping operation, and if the cutting head 40 is to be replaced, only the pulling force is applied to the cutting head 40, since the inserting portion 41 and the magnetic attraction member 30 are magnetically attracted, the inserting portion 41 is not difficult to be pulled out from the insertion hole 24, thereby achieving the effect of quickly inserting and pulling out to replace the cutting head 40.

2. If the pliers 10 has the spare cutting head 40 that needs to be carried along with, because the installation portion 21 has the insertion section 231 and the insertion hole 24 at the two different ends in the accommodating groove 23, except that the cutting head 40 can insert the insertion portion 41 into the insertion hole 24 and be magnetically attracted by the magnetic attraction member 30 for positioning, so as to perform the clamping operation of the object, the spare cutting head 40 can also be inserted into the insertion section 231 by the insertion portion 41, and then the same magnetic attraction member 30 is magnetically attracted for positioning.

As shown in fig. 12, another embodiment of the present invention of a quick tool bit change clamp structure includes a clamp 10, a base 20 and a magnetic element 30, which is different from the first embodiment in that the tool bit 60 is a punching clamp set, for example, for punching a belt, and the tool bit 60 has an insertion portion 41 of the tool bit 40, and can be magnetically attracted by the magnetic element 30 to be positioned on the base 20, so as to achieve the same effect as the first embodiment.

The above embodiments are merely illustrative of the present invention, and are not intended to limit the scope of the present invention. All such modifications and variations are within the scope of the invention as determined by the appended claims.

Claims (9)

1. A quick change bit clamp construction, comprising:

the two working parts are provided with two opposite clamp walls, two mounting holes are respectively arranged on the two clamp walls in an opposite way, and the holding parts of the two clamp bodies can be held and driven to drive the two clamp walls to relatively approach or depart from each other;

the two seat bodies are respectively provided with an installation part and a head part, the head part extends in the radial direction at one end of the installation part, a containing groove is arranged in each installation part, each installation part is arranged in one installation hole, the head part and a blocking part positioned at the periphery of the installation part are used for blocking and positioning at two sides of the arranged clamp wall, one end of each seat body, which is provided with the head part, is axially penetrated with an inserting hole to be communicated with the containing groove, and the two head parts are oppositely arranged on the two arranged clamp walls; and

the two magnetic parts are respectively fixed in the containing groove, the tool bit is provided with a plug-in part which can be magnetically attracted, and the plug-in part can be inserted into each jack to contact the magnetic parts and be attracted and positioned by magnetic force.

2. The quick tool bit change clamp structure of claim 1, wherein each seat has a step in the mounting portion, the step is formed by the insertion hole being smaller than the receiving groove, one end of each magnetic member in the receiving groove abuts against the step, and the other end of each magnetic member is stopped by a stopper protruding into the receiving groove, so as to position each magnetic member in the receiving groove.

3. The quick tool bit change clamp structure of claim 2, wherein the mounting portion of each seat body is circumferentially provided with a first annular groove and a second annular groove, the axial length of the first annular groove and the second annular groove is greater than the radial depth of the first annular groove, each seat body presses the two ends inwards to the first annular groove to form the retaining portion, and the second annular groove presses the two ends to form the limiting portion.

4. The structure as claimed in any one of claims 1 to 2, wherein each receiving slot penetrates the mounting portion, and each receiving slot is longer than the magnetic member to form an inserting section, the inserting section and the inserting hole of each base are located at two ends of the magnetic member, and the inserting section allows the tool bit to be inserted into the magnetic member by the inserting portion and to be magnetically attracted to and positioned.

5. The quick-change bit clamp structure of any one of claims 1 to 2, wherein each magnetic member is a permanent magnet, and the insert portion of the bit is made of a magnetically attractable iron material.

6. The quick bit-changing clamp structure according to any one of claims 1 to 2, wherein the two clamp bodies each have an axial hole, each axial hole is adjacent to the working portion of the corresponding clamp body, the two axial holes are symmetrically disposed at the positions of the two clamp bodies, each axial hole is penetrated by a shaft member, and the two shaft members are pivotally connected to the two clamp bodies at two ends of the same side of the clamp by a connecting member.

7. The quick tool bit change clamp of claim 6 wherein the connecting member is a plate having an elongated shape with two through holes adjacent to the two ends, the two shaft members pivotally connected to the plate at the ends on the same side of the clamp through the two through holes.

8. The quick-change bit clamp structure of claim 6, further comprising a resilient return member disposed between the two clamp bodies, wherein when the holding portion of the two clamp bodies is released from the holding force, the resilient return member causes the holding portion of the two clamp bodies to spread apart to move the two working portions away from each other.

9. The quick-change bit clamp configuration of claim 8 wherein the resilient return member is a torsion spring including a collar portion and resilient arms extending from opposite ends of the collar portion, the collar portion being received over a portion of the shaft, the resilient arms abutting the inner sides of the grip portions.

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