KR200409371Y1 - Probe block for testing LCD - Google Patents

Abstract

The present invention relates to a probe block for LCD inspection to facilitate the needle replacement, the present invention is to allow a pair of pins 14 to protrude a predetermined distance on both sides of the upper surface of the inclined surface (13), A block body member 10 having a fastening hole 15 formed between the pins 14; Connection terminal portions 22 are formed at both ends of the bottom surface, and between the connection terminal portions 22 is provided as a flexible substrate 21 to which the tab IC 30 is attached and bonded to the bottom surface of the block body member 10. A substrate member 20; A plurality of needle insertion grooves 51 are formed in the bottom surface so as to be opened downward with a constant width and depth, and are bonded by an adhesive to the front of the substrate member 20 of the inclined surface 13 in the block body member 10. A needle guide member 50; A needle member (60) inserted into the needle insertion groove (51) of the needle guide member (50) by patterning the fine thin plate having good conductivity by an etching process; While supporting the lower surface of the needle member 60 to be in close contact with the bottom surface of the needle guide member 50 to cover the lower portion, protrudes at a predetermined distance apart on both sides as in the block body member 10 A needle cover member (70) for forming a fastening hole (74) between the pair of pins (73) and the pins (73) formed to be formed; And a pin hole 81 is formed on a plate surface so that the pins 73 formed on both end surfaces of the block body member 10 and the needle cover member 70 fit together, and between the pin holes 81 on both sides. The side cover member 80 coupled by fastening the fastening means 90 through the fastening holes 82 to both end surfaces of the block body member 10 and the needle cover member 70 so that the fastening holes 82 are formed. ) Is provided by the coupling of the side cover member 80 so as to easily replace the damaged needle member 60 by simply replacing the fastening means 90.

Probe Block, Needle, Needle Replacement, LCD

Description

Probe block for testing LCD

1 is a cross-sectional view of the coupling probe probe for testing according to the present invention;

2 is an exploded cross-sectional view of FIG. 1;

3 is a perspective view illustrating a guide film member according to the present invention;

4 is an enlarged perspective view of a part of a needle guide member according to the present invention;

5 is a side view showing an example of a needle member according to the present invention;

Figure 6 is a side view showing another example of the needle member according to the present invention,

Figure 7 is an enlarged perspective view showing the configuration of one end of the needle cover member according to the present invention,

8 is a perspective view illustrating a side cover member according to the present invention;

9 to 12 is a side view showing the assembly process of the present invention,

Figure 13 is a perspective view showing the assembly structure of the side cover member according to the present invention.

<Description of reference numerals for main parts of the drawings>

10 body block member 13 inclined surface

14 pin 15 fastening hole

20: substrate member 23: guide film member

30: tap IC 40: insulation plate

50: needle guide member 51: insertion groove

60: needle member 70: needle cover member

71: insulation plate 72: cover block

73: pin 74: fastening hole

80: side cover member 81: pinhole

82: fastening hole 90: fastening means

The present invention relates to a probe block for the LCD inspection, and more particularly to a probe block for LCD inspection to facilitate the replacement of the damaged needle by making it easier to assemble and disassemble a plurality of components assembled to the body. .

LCD (liquid crystal display device), which is mainly used as a video display device such as a television or a notebook computer, has recently increased in demand due to its wide use field.

In the LCD, dozens or hundreds of connection terminals for applying electrical signals (video signals, synchronization signals, color signals, etc.) to the edges are usually arranged at high density.

On the other hand, the LCD applies a test signal before the product is mounted to perform a fire test to check and test whether the screen is defective.

Probe cards are provided as a means for inspecting the electrical characteristics of such LCDs.

Probe cards for LCD inspection have already been proposed by the applicant in various configurations.

However, as the patterns formed on the LCD are becoming more dense and highly integrated, and the width of the pattern itself is becoming very fine in micro units, the technology of the probe card provided for the inspection of the LCD is continuously developed to respond appropriately. Doing.

In particular, most changes have been made in the configuration provided to guide the needle and the needle, which is the contact means which comes into direct contact with the LCD pattern in the probe card.

In other words, as the line width of the circuit pattern formed in the LCD becomes extremely fine, the thickness of the needle and the components for guiding the needle can be appropriately coped with the latest ultra-thin pattern technology. .

Therefore, the current needle is to make a needle of the same shape at a time by using a micro-processing technology, that is, an etching process for a thin plate having a thickness close to the LCD line width.

In addition, the guide configuration for guiding the safe contact between the LCD circuit pattern and the flexible substrate while preventing contact between the needles having such a small size is also manufactured by using an etching process which is a fine pattern processing technology.

Therefore, the needle damage is inevitably generated during the test using the probe card for LCD inspection, and these needles are usually severely damaged, which adversely affects the test.

In the past, the needle in the probe block was placed in the needle guide to be firmly bonded to the block body by using an adhesive.

However, if some of the needles are badly damaged and adversely affect the LCD inspection, the damaged needle must be replaced.

In order to replace these needles, the joints with the block body must be separated mechanically or chemically, and thus, a preliminary work for needle replacement must be preceded, and a problem of delaying the LCD inspection due to the delay of needle replacement occurs.

In particular, depending on the configuration, it may be necessary to replace the entire unit to which the needle is bonded, which causes a very uneconomical problem in time and cost.

The present invention is to solve the conventional problems as described above, the main purpose of the present invention is to facilitate the assembly and disassembly of a plurality of components that are coupled to the bottom of the block body, particularly easy replacement of damaged needles in particular It is to provide a probe block for the LCD test to be performed.

In addition, another object of the present invention is to provide a probe block for an LCD test to enable a highly economical test to be carried out by allowing the test to be continued more quickly by significantly reducing the time required for needle replacement.

In order to achieve the above object, the present invention has a second half of the bottom surface as a horizontal plane, and the first half is formed as an inclined surface which is inclined downward at a predetermined angle, and a pair of pins protrude at a predetermined distance from both end surfaces of the inclined surface. A block body member having fastening holes formed between the pins; A substrate member formed at both ends of the bottom surface, the substrate member being provided as a flexible substrate to which a tab IC is attached between the connection terminal portions, and bonded to the bottom surface of the block body member; A needle guide member formed on the bottom thereof with a plurality of needle insertion grooves to be opened downward with a constant width and depth, and bonded by an adhesive to the front of the substrate member of the inclined surface in the block body member; The fine thin plate having good conductivity is patterned by an etching process so that one end thereof is upwardly curved to be connected to the one end side connecting terminal portion of the substrate member to form a connection end, and the other end forms a connection end to be connected to the LCD side terminal. A needle member inserted into the needle insertion groove of the guide member; The pair of pins are formed to support the lower surface of the needle member while being in close contact with the bottom surface of the needle guide member to cover the lower portion, and to protrude at a predetermined distance from both end surfaces thereof, as in the block body member. A needle cover member forming a fastening hole between the pins; And a pin hole in the plate surface so that the pins formed at both end surfaces of the block body member and the needle cover member are fitted into each other, and a fastening hole is formed between the pin holes at both sides of the block body member and the needle cover member. It is a configuration consisting of side cover members are coupled by fastening the fastening means through the fastening hole in both end surfaces of the.

The present invention relates to a probe block of a probe card provided for inspecting electrical characteristics of an LCD substrate.

The probe block typically connects an electrical signal transmitted from the inspection device to a circuit pattern of the LCD so as to determine whether there is a defect by the output signal.

In other words, the portion of the probe card that is connected to the circuit pattern and performs the inspection is the probe block.

Such a probe block is usually provided with a block body made of a metal material, and the connecting means with the circuit pattern is firmly fixed or attached to the block body.

1 is a combined configuration showing the configuration of the probe block according to the present invention, Figure 2 is a side cross-sectional view showing an exploded configuration of FIG.

As shown, the present invention is composed of a block body member 10, a substrate member 20, a needle guide member 50, a needle member 60, a needle cover member 70, and a side cover member 100. to be.

The block body member 10 is a manipulator of the probe card, that is, a support structure of a metal material whose upper end portion is firmly coupled by a bolt or the like to the assembly holder.

The block body member 10 has a shape in which the bottom surface 11 is formed to have the rear half portion as the horizontal surface 12 while the first half portion is inclined downward at a predetermined angle.

In the inclined surface 13 formed to be inclined so that a pair of pins 14 protrude outwards at a predetermined distance from both end surfaces of the upper side, and a bolt may be fastened between the pair of pins 14. The fastening hole 15 is formed.

At this time, the pair of pins 14 and the fastening holes 15 are more preferably formed side by side at the same angle as the angle of the inclined surface (13).

Meanwhile, the bottom surface 11 of the block body member 10 may simply have the horizontal surface 12 and the inclined surface 13 formed only in a planar shape, and as shown, the horizontal surface of the inclined surface 13 on the bottom surface 11. It is more preferable that the insertion groove 16 is formed at the end portion (12) and the rear end portion of the horizontal surface 12 so as to be recessed upward in a predetermined size and depth.

The substrate member 20 is a connecting means for attaching the tab IC 30 to the flexible substrate 21 so that a certain electrical signal is transmitted from the tester main body to the probe card.

That is, the flexible substrate 21 is made of a flexible material having a predetermined length, and a pattern is formed on the bottom surface, and connection terminal portions 22 are formed at both ends of the bottom surface, and on the bottom surface between the both connection terminal portions 22. This configuration is such that the tap IC 30 is attached.

Thus, the plate surface corresponding to the connection terminal part 22 of the flexible board 21 in which the connection terminal part 22 is formed in the both ends of the bottom in which a pattern is formed is used for the block body member 10 with an adhesive agent. To bond.

At this time, since the block body member 10 is usually a conductive material made of a metal material, the block body member 10 may cause a short with the connection terminal portion 22 of the flexible substrate 21 or act as a load on an electrical signal. Most preferably, the insulating plate 40 is attached to the plate surface facing the bottom of the body member 10 as shown in the drawing.

In particular, the insulating plate 40 is more preferably provided with a larger area than the connection terminal portion 22.

On the other hand, the board | substrate member 20 is the structure provided with the flexible board 21 which one end part has predetermined length, and the connection terminal part 22 formed in the both ends in the bottom face of this flexible board 21, respectively.

An insulating plate 40 having a size including a connection terminal portion 22 on a plate surface facing the bottom of the block body member 10 opposite to the connection terminal portion 22 at both ends forming the connection terminal portion 22 of the flexible substrate 21. ) Are joined.

In addition, the insulating plate 40 is firmly bonded to each insertion groove 16 formed in the bottom surface of the block body member 10 so as to be firmly bonded by an adhesive so as not to flow.

On the other hand, it is most preferable that the guide film member 23 is attached from the bottom to the connection terminal part 22 located at least on the inclined surface 13 side of the block body member 10 among the connection terminal parts 22.

3 is a perspective view illustrating a guide film member according to the present invention.

The guide film member 23 is formed to have a larger size than the connection terminal portion 22 so as to completely cover the connection terminal portion 22 from the bottom surface, but a plurality of contact holes 24 are formed in a fine size on the plate surface.

The contact holes 24 have the same number as the connection terminals of the connection terminal portion 22 and penetrate the plate surface. In consideration of the gap between the connection terminals, the contact holes 24 are zigzag-shaped or two or more rows as shown in the drawing. It is most preferable to form a stagger so as not to overlap each other.

Figure 4 is an enlarged perspective view of a part of the needle guide member according to the present invention.

The needle guide member 50 is made of a silicon substrate having a predetermined thickness, and has a structure in which needle insertion grooves 51 are formed at regular intervals so as to be recessed upward from a bottom surface to a predetermined height.

The needle guide member 50 is joined to the inclined surface 13 by an adhesive in front of the connection terminal portion 22 inserted into the inclined surface 13 side insertion groove 16 in the block body member 10.

In the needle guide member 50, the needle insertion groove 51 is formed in the longitudinal direction of the inclined surface 13, and the needle insertion groove 51 is formed in the same number as the connection terminals to be examined in the LCD.

Meanwhile, the needle guide member 50 may have a thickness of about 350 to 550 μm, and the needle insertion groove 51 may be formed to about 250 to 350 μm.

In particular, the needle insertion groove 51 is to be recessed upward in a portion of the upper surface so that the locking groove 52 is formed in one or more fine size.

The locking groove 52 may allow the needle insertion groove 51 side upper surface to be simply recessed in a fine size, but it is more preferable to provide the upper surface in a shape of opening upward.

The needle member 60 is a connecting means for allowing each end to be connected to the one end side connection terminal portion 22 of the substrate member 20 and the connection terminal of the LCD.

The needle member 60 is patterned into a certain shape by using an etching process used in a semiconductor microfabrication process with good conductivity, and a plurality of needle members 60 are simultaneously produced.

Therefore, the needle member 60 can cope with the size that can be connected to the pattern in accordance with the trend that the gap between the patterns of the LCD has become very high density and high density in recent years.

5 illustrates an example of a needle member according to the present invention.

The needle member 60 forms a connection end 61 which is curved upward so that one end is connected to the connection terminal portion 22 of the substrate member 20, and the other end forms a connection end 62 which is connected to the LCD terminal. The upper and lower surfaces are parallel to each other between the two ends.

In particular, the height between the upper surface and the lower surface between the connecting end 61, 62 of the needle member 60 is formed to be the same as or close to the height of the needle insertion groove 51 of the needle guide member 50.

However, as shown in FIG. 6, the lower surface of the needle member 60 may be provided with an elastic portion 64 to have elasticity while allowing some cut portions to protrude downward.

On the other hand, the needle member 60 is fitted into the needle insertion groove 51 of the needle guide member 50 while the both end side connecting ends 61 and 62 are connected to the terminal 22 and the LCD terminal of the substrate member 20. It is to be provided to protrude outward so that it can be connected to.

In addition, the needle member 60 is inserted into the needle insertion groove 51 so that the upper surface which is in close contact with the protruding portion to upwardly upward, so that at least one locking projection 63 is formed.

The locking projection 63 inserts the needle member 60 into the needle insertion groove 51 to fit the locking groove 52 so that the needle member 60 does not move in the length direction in the needle guide member 50. This prevents the departure from the needle guide member 50.

The needle cover member 70 is configured to support the lower surface of the needle members 60 to prevent downward movement of the needle members 60 inserted into the needle insertion groove 51 of the needle guide member 50. .

Figure 7 is an enlarged perspective view showing the configuration of one end of the needle cover member according to the present invention.

The needle cover member 70 may be formed in a single configuration as an insulating material, that is, a material such as ceramic, but the ceramic may be insulated from the needle member 60 due to poor workability. It is easier to form as a metal material, inserting in the middle.

Therefore, the needle cover member 70 is most preferably provided with an upper insulating plate 71 and a lower cover block 72 as shown.

The insulating plate 71 is composed of a thin plate made of an insulating material such as a synthetic resin or insulating tape, and the upper surface of the insulating plate 71 is in direct contact with the needle members 60, so that no electricity is supplied to the lower cover block 72. .

In addition, it is most preferable that the insulating plate 71 is formed to be the same size or larger than the needle guide member 50 so as to accommodate all the needle members 60.

The cover block 72 is a hard cover plate having a predetermined thickness.

The cover block 72 is formed to have the same width as the block body member 10, and is the same as the pair of pins 14 formed on both sides of the block body member 10 and the fastening holes 15 formed therebetween. The fastening hole 74 is formed in parallel between the pair of pins 73 and these pins 73 at an interval and an angle.

The cover block 72 is formed so that the upper surface is formed shorter than the inclined surface 13 of the block body member 10, the lower surface is formed shorter than the upper surface, but the length of the front end side is formed short.

On the other hand, the pair of pins 73 and the fastening holes 74 formed in the cover block 72 are at an angle compared to the pair of pins 14 and the fastening holes 15 formed in the block body member 10. Be positioned backwards.

The side cover member 80 is in a state in which the needle guide member 50 and the needle cover member 70 which are sequentially stacked on the bottom surface of the block body member 10, in particular, in front of the inclined surface 13 are in close contact with each other. It is a configuration to be firmly fixed.

As shown in FIG. 8, the side cover member 80 is a block body member in a state in which the needle guide member 50 and the needle member 60 are pressed against each other between the block body member 10 and the needle cover member 70. The cross-sections of both sides of the 10 and the needle cover member 70 are coupled to each other so that the stacked components can be firmly fixed.

To this end, a pair of pinholes 81 are formed in the side cover member 80 at a predetermined distance from the upper side and the lower side of the plate surface, and fastening holes 82 are formed between the pinholes 81.

Each of the pinholes 81 of the side cover member 80 is fitted with pins 14 and 73 formed on both end surfaces of the block body member 10 and the needle cover member 70.

When the pins 14 and 73 that protrude outward over both end surfaces of the block body member 10 and the needle cover member 70 are fitted into the pinholes 81, the block body member 10 and the needle are fitted. The cover members 80 are fixed while being in close contact with each other.

Hereinafter, the assembly process of the present invention according to the above configuration and the effects thereof will be described.

The present invention has the most prominent feature to facilitate the replacement of the needle member 60 while allowing a plurality of components to be stacked on the bottom of the block body member 10.

9 to 13 show the assembly structure of the present invention.

The block body member 10 of the present invention is assembled so that the bottom face is turned upside so that a plurality of components can be stacked on the bottom face.

First, as shown in FIG. 9, the substrate member 20 is fixed over the horizontal surface 12 of the block body member 10 and a part of the inclined surface 13 adjacent to the horizontal surface 12.

At this time, the insulating plate 40 to be attached to both ends of the substrate member 20 is inserted into the insertion groove 16 formed in the horizontal surface 12 and the inclined surface 13 of the block body member 10 and firmly using an adhesive. To be bonded.

When the substrate member 20 is bonded, the needle insertion groove 51 is firmly bonded to the tip side inclined surface 13 of the substrate member 20 while the needle insertion groove 51 faces upward as shown in FIG. 10.

When the substrate member 20 is bonded, the needle member 60 is sequentially inserted into each of the needle insertion grooves 51 of the substrate member 20. In this case, the needle member 60 is latched as shown in FIG. 11. ) Is settled to fit into the engaging groove 52 of the needle insertion groove (51).

The needle member 60 inserted into the needle guide member 50 is in a state in which connection ends 61 and 62 of both sides protrude outwards, and at this time, the connection end 61 on one side of the needle member 60 is formed of a substrate. It will be in the state connected with the connection terminal part 22 of the member 20. FIG.

In particular, the connecting end portion 61 of the needle member 60 is connected to the connecting terminal portion 22 of the substrate member 20, and is connected to the connecting terminal portion 22 of the substrate member 20 so as to guide stable connection with the connecting terminal portion 22. The guide film member 23 having a plurality of contact holes 24 already formed on the plate surface is firmly bonded.

That is, when the plurality of contact holes 24 are joined to the connection terminal portion 22 of the substrate member 20, the guide film member 23 formed so that a part of each connection terminal portion 22 is opened, The connection end 61 is guided to the contact hole 24 to maintain a stable connection.

Meanwhile, when the needle member 60 is coupled to the needle guide member 50, the needle cover member 70 is placed thereon.

The needle cover member 70 is placed on the top of the needle guide member 50 as shown in Figure 12 so that the length is formed relatively long.

The tip portion of the needle cover member 70 in the needle guide member 50 is mounted so that one end of the needle member 60 is slightly pushed back from the tip portion so as to bend in the axial direction.

In the state where the needle cover member 70 is mounted on the needle guide member 50, the side cover members 80 are coupled to both end surfaces thereof.

13 is a perspective view showing the assembly structure of the side cover member according to the present invention, the coupling of the side cover member 80 is a block body in each pin hole 81 formed in the side cover member 80 as shown in FIG. Pins 13 and 74 formed on both end surfaces of the member 10 and the needle cover member 70 are fitted to each other.

When the side cover member 80 is coupled, each structure from the block body member 10 to the needle cover member 70 is strongly compressed with each other, thereby maintaining a firm fixed state.

However, in order to prevent the side cover member 80 from being separated, the fastening hole 82 formed in the side cover member 80 and the fastening hole formed in both end surfaces of the block body member 10 and the needle cover member 70 ( 15) to fasten the fastening means 90, such as bolts or screws.

In this manner, when the needle member 60 is provided, one end of the needle member 60 protruded by being applied to the tester in the same state as in FIG. 1 is connected to the LCD pattern to perform the LCD inspection.

While continuously performing the electrical characteristic test, some of the needle member 60 is damaged while reducing the reliability of the test.

Therefore, in order to maintain a stable inspection, the damaged needle member 60 should be replaced. Thus, the present invention replaces only the needle member 60 required by a simple operation of separating the side cover members 80 on both sides. It becomes the number.

That is, when a specific needle member 60 is damaged, the fastening means 90 such as a bolt or a screw is released from the side cover member 80 and the side cover member 80 is simply removed from the block body member 10 and the needle cover member 70. Is pulled out, the side cover member 80 is easily separated from the block body member 10 and the needle cover member 70.

When the side cover member 80 is separated, the needle cover member 70 is lifted up, and only the needle member 60 that needs to be replaced is taken out and replaced with a new needle member 60.

In order to replace the needle member 60, the side cover member 80 and the needle cover member 70 are separated in order as opposed to when the present invention is assembled, and immediately after the needle member 60 is replaced, the assembly is performed again in the same manner. The needle member 60 can be replaced.

As such, it is possible to omit the cumbersome work of detaching and then regluing the adhesive site for needle replacement as in the past, and to shorten the time of replacing the needle as much as possible.

On the other hand, the present invention is not limited to the above-described embodiments, it is apparent that modifications and improvements are possible by those skilled in the art without departing from the spirit of the present invention.

As described above, according to the present invention, the needle insertion groove of the needle guide member 50 that is strongly bonded to the block body member 10 without using any bonding means is connected to the needle member 60 connected to the LCD pattern terminal. 51 is simply inserted into the needle member 60 and covered using the needle cover member 70, and then the needle member 60 is strongly compressed and firmly fixed by the side cover member 80 for a long time. The needle member 60, which is inevitably damaged due to the inspection, can be easily replaced by simple disassembly and assembly operations, thereby providing a convenience of management and a very easy advantage to enable economical maintenance.

Claims (9)

The second half of the bottom surface is a horizontal plane, the first half is formed with an inclined surface which is inclined downward at a predetermined angle, and a pair of pins are projected at a predetermined distance from both ends of the upper surface of the inclined surface, and a fastening hole is formed between the pins. A formed block body member; A substrate member formed at both ends of the bottom surface, the substrate member being provided as a flexible substrate to which a tab IC is attached between the connection terminal portions, and bonded to the bottom surface of the block body member; A needle guide member formed on the bottom thereof with a plurality of needle insertion grooves to be opened downward with a constant width and depth, and bonded by an adhesive to the front of the substrate member of the inclined surface in the block body member; The fine thin plate having good conductivity is patterned by an etching process so that one end thereof is upwardly curved to be connected to the one end side connecting terminal portion of the substrate member to form a connection end, and the other end forms a connection end to be connected to the LCD side terminal. A needle member inserted into the needle insertion groove of the guide member; The pair of pins are formed to support the lower surface of the needle member while being in close contact with the bottom surface of the needle guide member to cover the lower portion, and to protrude at a predetermined distance from both end surfaces thereof, as in the block body member. A needle cover member forming a fastening hole between the pins; And Pinholes are formed on the plate surface so that the pins formed at both end surfaces of the block body member and the needle cover member are fitted into each other, and fastening holes are formed between the pinholes at both sides of the block body member and the needle cover member. Side cover members coupled to each other by fastening the fastening means through the fastening holes in both end surfaces; Probe block for testing the LCD consisting of a combination of two. 2. The method of claim 1, wherein insulating plates are attached to both end side joining surfaces of the substrate member, and insertion grooves are formed in the horizontal and inclined surfaces of the block body member to which both ends of the substrate member are joined. The probe block for an LCD inspection to be bonded to the block body member using an adhesive. The probe of claim 1, wherein a guide film member is bonded to the terminal connection portion of the substrate member to cover the connection terminal portion in a larger size, and a plurality of contact holes are formed in the guide film member in a fine size. block. The probe block for an LCD inspection according to claim 3, wherein the contact holes of the guide film member are staggered in a zigzag shape in consideration of a gap between the connection terminals and an adjacent pattern. The method of claim 1, wherein the needle guide member is formed with one or more locking grooves to be recessed upward to the upper surface of the needle insertion groove, the LCD inspection to the locking projection is formed so as to fit in the locking groove on the upper surface of the needle member Probe Block. The probe block of claim 1, wherein the needle guide member has a thickness of 350 to 550 μm, and the needle insertion groove has a size of 250 to 350 μm. The method of claim 1, wherein the needle cover member is provided with an upper insulating plate of the thin plate, the lower portion is formed of a metal cover block, one pin on both sides of the cover block protrudes, between the pins Probe block for LCD inspection to form a fastening hole. The probe block of claim 1, wherein the needle cover member is formed of a ceramic material. The probe block of claim 1, wherein the pair of pins and the fastening holes formed at both end surfaces of the block body member and the needle cover member are formed at the same inclination angle as the inclined surface of the block body member.

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