TWM404534U - Coaxial cable connector - Google Patents

Description

M404534 V. New description: [New technical field] This creation is about - (4) viewing connection, especially the connector that can assemble the outer diameter of the wire with different coaxial cable. [Prior Art] The TV reception is based on cable TV. The cable TV signal is connected to the receiving TV using the coaxial power line (Coaxia丨cable). It is not limited to cable TV. Coaxial cable is mainly used for signal transmission. Nowadays, it has a high-frequency signal bidirectional transmission function, which extends from the outdoor to the indoors and requires a connector at the end of the cable to receive TV or distribute. The device is connected to the signal for transmission; the connector is connected to the docking device provided on the TV or the dispenser. Different requirements for signal transmission quality 'The same type of coaxial electric winding has two layers of braided, three-layer braided (Tri-shield) between the outer insulating layer around the needle-shaped center conductor and the insulating jacket. Different coating forms such as four-layer braiding (Quad) cause the cable to be used to have different outer diameters of the wire. In addition, the outer insulating layer has an aluminum foil coating to achieve the shielding effect. In order to cooperate with a coaxial cable capable of assembling different outer diameters of wires, various known connector structures are currently available. For example, as shown in the first figure, the connector A at the end of the cable B is mainly composed of a ring nut A 1 , a plastic ring body A 2 , an inner ring body a 3 and a metal outer circle. The collar A4 is formed. The annular nut A 1 is disposed on the front side, has an internal thread inside and is screwed with the butt joint; the plastic dolphins 3 M404534 annular body A 2 is connected with the annular nut A, and a waterproof ring A21 is arranged at the connection position therebetween. The inner annular cylinder a 3 is disposed inside the plastic annular body a 2 ; the outer circular collar A 4 is sleeved on the side of the plastic annular body a 2 close to the cable B. At the time of assembly, as shown in the first figure, after the cable B is stripped, the end needle-like center conductor B1 is traversed by the outer circular collar VIII and then enters the center of the inner annular cylinder 八3. Thereafter, the outer circular collar A4 is slid over the plastic ring main body 6 by a crimping tool to approach the y-shaped nut A 1 to form a combined structure as shown in Fig. A. Since there is sufficient space between the outer edge a 3 1 of the buckle portion of the inner annular cylinder A 3- side and the inner edge A 23 of the plastic annular body A 2 side, the same type of wire can be accommodated. The outer diameter of the outer layer is different from that of the electric pro-B, and the special shape of the side annular body 6 2 is elastically deformed by the pressing portion A 2 2 , and the outer diameter of the sealing wire can be appropriately fixed. Electric Lin B. For details, please refer to us Pat. 6,848 939 "CGaxiai(10) with integral grip bushing f〇r cables 〇f 'sout" with the integrated grip for different thickness cables (4). However, this kind of knowledge After the connection HA is combined, since the octagonal body part 8 and 2 parts are exposed (see the first touch), it is prone to aging or oxidative deterioration; therefore, for the connector A, the ship system is quite a lot, and in practice When operating, there are the following problems and shortcomings:

1. The plastic ring body A 2 part of the wire is exposed between the ring nut A i and the outer round secret. If it is used outdoors, the long-term wind blows the sun and rain, and the material is made to the main body A 2 The formation of aging or oxidative deterioration causes the breakage of the plastic ring main body a2 to cause water leakage, resulting in poor contact of the electric_β connected to the connector A. When the annular center 2 is changed to the metal material f, it is very laborious and difficult to use the crimping tool to perform the close fitting, so it is not popular in the market. 2. The annular nut A 1 - side of the inner annular cylinder A 3 side of the (four) cladding layer insertion port 八 3 2 and the shape bribe A 4 side of the Wei line inserted σ Α 4! The length of the segment is approximately equal to the width of the post-cladding layer B 3 1 (or even longer), as shown in the figure. If the distance is too long, it is not easy to insert the inner insulating layer b 2 and (4) the cladding layer b 3 of the Wei wire B, which often causes the internal layer B2 and the domain cladding layer β3 to be broken, resulting in high frequency signals. The reflection loss deteriorates in two-way transmission, which affects signal transmission quality and stability. To improve this problem, the distance between the electric, cable, and wire insertion ports A 4 脏 of the dirty injection I cladding insertion port A 3 2 is about 2/3 of the width of the cladding layer B 3 1 . Only has an effect. However, the inner diameter of the inner edge A 2 3 of the plastic annular body A 2 - side may be due to the pressing portion A 2 2 of the plastic annular body A 2 and the pressing slope a of the outer circular collar a4. 4 2 Tightening and shrinking, resulting in the cable B not being able to penetrate. In addition, as shown in the second figure, another conventional connector D mainly consists of a ring-shaped nut hitting D 1 , an inner annular cylinder D 2 , an annular body D 3 , and an outer circular shaft. The ring β / and a plastic sleeve D 5 are formed. The main difference from the conventional connector a of the first figure is that the plastic sleeve D 5 is disposed in the metal annular body D 3 and the outer circular collar 〇 * without the problem of bare plastic material. The annular nut D1—the side is connected to the inner annular cylinder D 2 penetrated by the needle-shaped central conductor b1 of the power supply winding b, and the annular body D 3 is sleeved outside the inner annular cylinder D 2 , and the inner ring a hook portion D 21 is provided on the side of the main body D 2- 2 , and the end portion of the loop portion D 3 i of the loop main body D 3 is extended by the hook portion D 2 1 : the annular body of the annular body D 3 is forced tight

F 5 M404534 The outer circular collar D 4 is set outside the D 3 i; the plastic sleeve D 5 is set in the outer phase. There is a large space between the outer edge D2 i of the side end of the inner annular cylinder D2 and the inner edge D5 i of one side of the plastic sleeve, and the size of the outer diameter of the wire can be accommodated. The cable layer is woven and worn, and the elastic deformation effect of the sleeve D 5 can be appropriately sealed to seal the electric double wire B of different thicknesses. The junction of the B-end connection of the Wei wire is due to the ring-shaped main metal. The material '^^ the ring-shaped pressing portion D31 and the outer circular collar D4 are assembled and crimped with a crimping tool. Because they are all metal materials f, and the crimping tension distance D3 2M is long, it is necessary to resign a considerable pressure of the crimping force to the side of the ring. The opposite side and the pressing portion D 3 1 are pressed and pressed tightly by the distance D 3 2 Difficulties in completion, resulting in time-consuming and labor-intensive crimping operations.

In addition, the annular nut D 1 - the side of the inner annular cylinder D 2 side of the (four) cladding insertion port D 2 2, and the outer circular collar D 4 side of the m line inserted population d 4 ^ Between, there is a long distance of the segment, which is longer than the width of the cladding layer B 3 1 after the stripping of the Wei wire B. The distance is too long, which will result in the power supply _B internal insulating layer b 2 and the transfer coating layer ^ The alignment of 3 is not easy, and the inner insulating layer B 2 and the radiation cladding layer b 3 are often damaged. In particular, in the case of high-frequency 峨 two-way transmission, such damage will cause the reflection loss to deteriorate, affecting the transmission product f and the stability. To improve the problem, the coating layer is inserted between the mouth D 2 2 and the Wei line into the population D 4丄, which is about 2/3 of the cladding width B 3 1 . However, in this way, the inner edge D 5 1 _ of the plastic sleeve D 5 side is narrowed by the pressing slope D 5 2 of the exposed sleeve D 5 and the annular main body D3_ tight inner hole slope D33. , causing cable 8 to pass without ^ 6 M404534. [New content] In view of the problem of the conventional technology, 'this creation mentions 15' and an electric environment line, the cable has a coaxial electric line connecting with an internal insulating layer around the body, and its appearance has - middle, a body having a braided layer between the needle-shaped center guide sleeves; after the m-wire stripping, 2 cladding layers, and an insulating jacket, and the inner insulating layer and the inner cladding layer are bare 2 the woven layer is folded over the insulation to be assembled in the connector; the system comprises: a day "------------------ An internal annular domain, connected to the Wei-shaped nut - the other side of the shaft - butterfly, and from the Mei axis - the main body of the ring-shaped nut, set outside the inner ring domain, the right side has a forced Tight outside · Bu Yucheng - Wei Wei Department, Lin Lun face (four) outside the tight part of the Lin, tightly connected to the right end of the new and the beautiful part - stop ring; Outside the left side of the part, and the unassembled wire-shaped rigid body has a crimping pressing distance; the left side has an electric (four) insertion port, and The electric_insert _ _ into - the inner diameter of the smaller (four) hole to the right side of the inner hole to form an inner guiding bevel; and - the plastic bushing 'located inside the outer circular collar, and one side of the There is a foot contact between the inner edge and the outer edge of the buckle 4 to accommodate the size of the material, the size of the material, the flat layer, the cable is assembled and the crimping tool is used. External circular collar

After the I end surface is connected with the stop ring, the sleeve is elastically deformed and squeezes the hook portion, and the overall outer diameter of the outer sleeve is not de-energized, and the outer casing is not electrically decoupled. The electric observation card is fixed (4); the left end of the hard-to-stack has an inner diameter commensurate with the pressing inner hole of the outer circular sleeve ring, and a right-to-left direction is provided between the inner hole of the sleeve at the right end and the inner edge of the left end. a tapered annular wall surface and the annular wall surface is oppositely disposed with a locking inclined surface that is inclined downward from the right to the left; wherein the pressing contact distance is the width of the coating layer after stripping the electric wire 2/3; the (4) cladding layer inserts the distance between the population and the population of the line, which is the % of the strip after the stripping of the electric slow line; and the latch of the left end of the flap of the flap sleeve The inclined surface is fastened to the inner inclined surface of the outer yoke to prevent the returning sleeve from sliding out of the tight inner hole of the outer circular collar; and at the same time, the inner hole of the sleeve at the right end of the plastic sleeve is smaller than the outer circular The tightness of the collar and the large 'tolerance __ specifications of the thickness of the cable woven fabric provided by the creation of the _ electric view connector, the main New Zealand as follows Note: The electricity _ terminal is still connected (four) difficult to find the distance from the Wei line to view the width of the 2/3 ‘ 使 红 使 使 使 使 使 使 使 使 使 使 使 使 使 使 使 使 使 使 使 使 使 使 使 使 使 使Z. The inner annular cylinder (4) is between the cladding layer σ and the outer _ m side of the two sides, there is a short distance, about the Wei line stripping and then subtracting the coating: another 2 /3, Gu Yi for the inner insulation layer of the Wei line and (4) the case where the cladding layer is broken and damaged, can improve the communication quality of high-frequency two-way transmission. M404534 to accommodate the 4' plastic bribe at the right end of the bribe inner hole part of the pure ring of the tight inner hole with the same size and thickness of the cable thread into the woven layer. :, large '5_ elastic deformation of the inner hole of the sleeve of the plastic sleeve, and the extruded electric wire is clamped to the male seal' to achieve waterproof effect. Inner diameter 6. The left end of the plastic bushing has an age-shaped shaft-shaped inner hole to guide the cable entry.

7. Plastic bushing right (four) set of coffee left object _, with - ring wall. ‘The structural features of the __ will be detailed and extracted, and the following functions will be used. [Embodiment] - Clear. Referring to the third to fifth figures, this creation provides a kind of coaxial Wei wire connector, / 1 QQ mainly consists of - ring nut, - inner ring cylinder 2, one ring integral 3 outer shed The ring 4 and the plastic sleeve 5 are formed. The connector 〇 〇 ^ and ^' and the cable cable β is insulated inside the lion-shaped center conductor B1 lion. There is a layer of the cover layer 8 3, and there is a weaving 曰 4 between the insulation jacket β 5 . The ribbing β 4 can be in different coating forms such as two-layer (Standard), three-layer woven (Tri-Shieid) or four-layer woven (Quad). > See the section of the fifth figure, the inner nut of the ring nut 1 of the connector (10) has an internal thread 11 which can be connected to the outer thread of the squirrel [ / | The ring nut 1 is connected to the inner ring and is strong. The ring body 3 is disposed outside the inner annular cylinder 2, and the inner 9 annular cylinder 2 is opposite to the one or more The hook is formed (: 31 outer side hook portion 21 is connected with at least the pressing portion 31 to show three hooks). The ring of the annular body 3 is provided with - waterproof _ ! 2 ^ 3 〇. The annular nut 1 and the annular body 3 are connected to the ring body 4 of the annular body 3, and the outer __4= left side outer sleeve is provided with an outer_ring hook portion 2^2 iu plastic sleeve 5, and the inner ring shape The large space of the cylinder 2 can accommodate the same kind: the inner edge of the left end 5 2 is between the two sides (such as the second layer, the third, the third, the outer twisted size is different from the line B. 5 can be; Squeeze the inner ring to read 2 (4) 2 i material molding and can be mixed deformation effect, the outer diameter of the different size double electric = comprehensive coverage of the fishing unit 21 and the waterproof effect. (4) jacket β 5, and the cable line B is stuck and sealed, see the fifth _ with the fourth figure 'na shaft sleeve 5 left end 5 ^ = rounded 4 of the tight inner bore 42 commensurate inner diameter, right end 5 3 of the fine hole ...t end 5 2 between the inner edge 51 is provided - an annular wall surface 5 6 which is tapered from the right to the left, and the object = wall surface 65 is oppositely provided with a locking slope 5 4 which is inclined downward from the right to the left. The continuation body 3 and the outer circular collar 4 have a crimping distance 32, that is, a distance between the end face 4 of the outer circular collar 4 and the stop ring 3◦. _=六闺—顺___装See the sixth picture, first _ After stripping the braid folded in absolute B 4 r c M404534

On the sleeve B 5, and (4) the _ 2__ β 3 bare—after stripping 7 the coating width B31, which is specified in the standard specification, the width IV of the coating layer is W inches (6.4 mm). The crimping force of the annular body 3 and the outer_ring* is tight, and the pressing distance 32A is about 2/3 of the width __ cladding width B 3 1 . In addition, as shown in the seventh figure, the system will be inserted into the connector 1 ()

^The tool has not yet been finished. Its towel, t miscellaneous...conductor ^circular collar 4 and plastic bushing 5 enter the inner annular cylinder 2, and from the ring view, the inner insulating layer B 2 and (4) cladding layer B 3 extend into the inner ring At the same time, the inner annular cylinder 2 is inserted between the line __ cladding layer B3 and the braided side. 3 4 After that, see the figure shown in the figure, after the electric Wei B is inserted into the connector i ◦ ,, the tool crimping force is tightly separated by 3 2 1/2 distance 3 3 , and the plastic inner edge 5 i妓 is forced inward. Tightening cable B and guiding the outer circle 2

Shift (such as Shantou (four) to), (4) to turn creep 5 2 by the inner circular bevel 4 in the left side of the inner guide slope 4 ^ left 2 ' and the plastic sleeve 5 deformation sleeve left end 5 2 of the card _ shape The inner bevel 4 3 of the collar 4 is formed. Hold the outer circle when the crimping tool is pressed to the end to make the crimping tight _3 2; Xiao _, the outer circular collar 4 end face 4 ◦ is connected with the stop ring 3〇, The right end 5? The tightening inner hole 3 of the annular main body 3 is formed to form a tight seal. In the figure of Fig. 9 / after the wire 8 is inserted into the connector 100, the crimping tool is crimped. No, the connector at the end of the wire B provided by this creation] π UU 'in which the ring main M404534 is made of metal (also plastic), and the annular pressing portion 3 of the annular body 3 and the outer circle The inner diameter of the collar 4 is tightly combined when the crimping I is pressed. Because the metal material is pressed, the pressing distance requires a larger crimping force, so the crimping distance is shorter. This distance is approximately the width of the cladding layer after the electric winding (four) line, so it is more labor-saving when crimping with a crimping tool.

Moreover, the aluminum foil coating on the left side of the inner annular cylinder 2 on the side of the ring nut of the present invention is inserted between the σ 2 2 ' and the Wei line of the left side of the outer circular collar 4 For the presence of her-segment L (see the fifth figure), this miscellaneous La is about the width of the electrical strip B stripping rib cage cladding B 3 1 , which is a short distance L, easy to supply mirror lines B, the inner insulating layer B 2 and (4) the cladding layer B 3 are inserted, and the internal insulating layer B 2 and the consuming coating layer B 3 are not damaged. When the high-frequency signal is bidirectionally transmitted, the reflection loss can be better. Improve the quality and stability of the transmission. The coaxial cable connector provided by this creation is mainly improved as follows:

1. Electro-fiber wire B-end connector 1 〇 The foil coating width B 31 is less labor-saving. The crimping distance of 0 is about 2/3 of the stripping of the electric power line B. When the crimping work surface is used to connect the Wei wire connector, the side of the inner annular cylinder 2 is used. (4) The cladding layer is inserted into the population 2 2 and the outside. Round collar core! After 1 electric fiber line inserts between populations 4 1 'for the existence of shorter lin, about 2 / 3 of the electric stripping strip width B 3 1 , easy to be used inside the Wei line B Zou insulation layer B 2 and :: cladding layer B 3 is inserted without damage. 'High-frequency two-way transmission can be improved. 3. The plastic sleeve 5 has a beveled surface. 5 4 has a fixed outer circular shape. The effect of the guide bevel 12 M404534 43 in the ring 4 prevents the plastic bushing 5 from slipping out of the tight inner bore 42 of the outer circular collar 4. 4. The inner sleeve of the plastic sleeve 5 at the right end of the sleeve 5 5 is larger than the outer circular collar to accommodate the braided layer of the cable B of the same specification and different thickness β ^ penetration hole ^ with the plastic lion 5__ hole 55 Ringing, _, squeeze the hook part 2 1 'can cover the hook part 2! The outer wire of the electric _R 2 is sealed and sealed to the waterproof effect. , 'The thickness will be different. 6. Plastic bushing (10) 52 Na 51 excitation 42 proportional inner diameter 'to enter the electric axis.追 追 追 追 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 Between the 451's there are advances, see the tenth figure is the original, the tighter of the bushing. ^ + ° view 5 7, the end of the wire-clamping connector of the wearing wire can be formed into the neck portion 13 , this design can be enhanced, see Fig. 11, the sage a 丨 & Similar to H, the embodiment, the system, and the tenth figure shown in FIG. 3, the 状%-shaped nut 1, an inner annular cylinder 2, the annular body main body h 7-shaped collar 4 and the Naa axis Set of 5 components. However, in the embodiment, the annular and annular i-body plastic coffin #'s inner ring of the circular collar 4 is provided with a threaded portion 44, which is detached, and the body 3 is easily closed when pressed tightly. Fastening from the outer circular collar 4. Further, the inner annular cylinder 2 is provided with a hook ς 13 M404534 portion 2 3, which resists the inner necking section of the annular body 3 to prevent the annular body 3 from being pressed from the inner annular cylinder 2 Get rid of. In summary, this creation is in full compliance with the novelty and progressive requirements of the patent, and is submitted in accordance with the law. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a cross-sectional view of a conventional coaxial cable connector in which the electrical double wires are not assembled. The first A is the same as the first, but the cable is assembled. Another cross-sectional view of a conventional coaxial cable connector, the third diagram represents a combined appearance of the creation, the fourth diagram represents an exploded view of the creation, and the fifth diagram represents a cross-sectional view of the creation, the sixth to the The nine figure represents an action diagram of the present assembled electric power, the tenth figure represents a cross-sectional view of another embodiment of the present creation, and the tenth figure represents a cross-sectional view of the present embodiment. [Main component symbol description]

Cable B Needle-shaped center conductor B Internal insulation B 2 1 Lu foil cover B 3 14 M404534 Aluminum foil cover width B 3 1 Braid B 4 Insulation jacket B 5 Connector 10 0, A, D Nut 1, A 1 internal thread 1 1 waterproof gasket 12, A 21 neck portion 1 3 inner annular cylinder 2, A 3, D 2 hook portion 21, D 21 outer edge 21 1 , A3 1 , D2 2 Aluminum foil cladding insertion opening 22, A32, D22 hooking portion 2 3 annular body 3, A2, B3, D2 stop ring 3 0 annular pressing portion 31, A2 2, D31 inner edge A 2 3 crimping Tightening distance 3 2, D3 2 1/2 distance 3 3 Tightening inner hole 3 4 External circular collar 4, A 4, D 4 End face 4 0 Cable insertion opening 41, A 41, D 41 Tightening the inner hole 4 2 15 M404534 Tightening bevel A4 2, D 5 2 Inner bevel 4 3 Inner bevel D 3 3 Threaded part 4 4 Plastic bushing 5, D 5 Inner edge 51, D51 Left end 5 2 Right end 5 3 Holding ramp 5 4 Bushing bore 5 5 Ring wall 5 6 Buckle ring 5 7 16

Claims (1)

M404534 Sixth, the scope of application for patents: ^ Daolin type _ electric _ connector </ br> and - electric lining combination, the electric Wei has a needle shape. , the inner portion of the 'pin-shaped body is provided with an inner insulating layer having a coating layer on the outside, and a braid layer is disposed between the inner insulating layer and the insulating outer casing; after the electric magic wire is stripped, the weaving layer is so Insulating the jacket, and exposing the inner insulating layer and the galloping coating layer to the width of the coating layer after stripping, to assemble in the connecting box; the system comprises: a %-shaped nut with an internal position and The external thread of the butt joint is screwed; the cylindrical body 'couples to the side of the annular nut _, the younger side forms a hook portion for the other side of the annular nut, and forms a - _ insert from the left side An annular body is sleeved on the outside of the inner annular cylinder, and the inner side of the right side has a force-tightening inner side of the left side of the inner hole and an open-tight portion, and the buckle fishing portion extends out of the ring. The outer side of the δ mysterious ring is connected to a stop ring at the right end; the outer ring (four) is set to the left woman of the ring, and the ring body has a crimping connection before the wire is assembled. Tightening distance; the left side has a Wei-line population, and a tight inner diameter is formed in the insertion hole of the electron microscope line. An inner guiding bevel is formed on the right side of the pressing inner hole; and a plastic bushing is disposed on the outer circular shaft portion, and a foot contact is formed between the __saki and the outer edge of the fishing portion to accommodate The braided layer of the same type but the outer diameter dimension is the same as the braided layer of the electric slow wire; the plastic bushing is assembled after the cable is assembled and the circular collar end face of the material part is connected with the stop ring by crimping the jade Elastically deforming and squeezing the hook portion, and the overall outer diameter of the outer surface of the hook portion is different from the outer casing of the cable, and the cable is sealed; the left end of the plastic sleeve The inner edge has an inner diameter commensurate with the pressing inner hole of the outer circular collar, and an annular wall surface which is tapered from the right to the left is provided between the inner hole of the sleeve at the right end and the inner edge of the left end, and the annular wall surface The outer surface is provided with a locking slope which is inclined downward from the right to the left; M404534, wherein the pressing distance is about 2/3 of the width of the aluminum foil coating after stripping of the cable; the aluminum foil coating is inserted The distance between the mouth and the cable insertion opening is about 2/3 of the width of the aluminum foil coating after the cable is stripped; The gas clamping slope of the left end of the deformation sleeve of the plastic sleeve is fastened to the inner inclined surface of the outer circular collar to prevent the plastic sleeve from sliding out of the tight inner hole of the outer circular collar; The inner sleeve of the sleeve at the right end of the plastic sleeve is larger than the inner bore of the outer circular collar to accommodate the braid of the wire of the same specification and thickness. 2. The coaxial cable connector of claim 1, wherein a waterproof gasket is disposed at a position where the annular nut is coupled to the annular body. '3. According to the towel, please refer to the first coaxial wire connection of the 1st, which is the distance between the end of the outer circular collar and the stop ring. 4. According to t, please use the same as that of the sub-connection, and the hook portion of the inner annular cylinder is formed by at least one clasp. 5. The coaxial cable connector of claim 3, wherein the plastic sleeve is formed from a deformable plastic material. The coaxial cable connector of claim 1, wherein the annular body has a crimping distance and the inner ring of the inner ring is inserted into the outer layer and the outer circular shape. The distance between the insertion ports of the collar is equal. 7. According to the _Wei line continuous suspension described in the paragraph 4 of the Chinese Patent No. 5, a shackle ring is arranged between the annular wall of the 18 M404534 sleeve. 8. The Tonglean connector according to the above clause of the patent application scope, wherein the end of the annular nut forms a sigma portion. The ring-shaped main body is made of metal according to the same item as claimed in the claim. 1〇. According to the scope of the patent application, the main body is plastic material. The coaxial cable connector of the above, wherein the ring is a coaxial cable connector according to the item (i), wherein the inner hole of the outer/shaped collar is provided with a groove. Contacting the outer surface of the annular body to prevent the body from being detached from the outer circular collar. 1 2 . According to the coaxial electrical connector described in the patent of the patent, the outer surface of the bean 4 ring column is provided with a hook adjacent to the body, and the 3', ° bell-shaped main (four)-blocks inside the annular body The job section is to prevent the 4% main 侃 _ material sample from being forced to detach.