阅读说明：本技术 一种隐形无级自锁半自动连接件 (Invisible stepless self-locking semi-automatic connecting piece ) 是由 高光君 于 2020-05-22 设计创作，主要内容包括：本发明为一种隐形无级自锁半自动连接件,由公件和母件组成,是公件直插入母件后,在安装的工位距离内全程无级自行锁定的半自动连接件,且公母件各自采用隐藏式孔内膨紧自固定更加可靠美观。所述的公件是：起子尖头杆状带螺杆帽。所述的母件包括：壳体外设置的自固定部分的防退齿、自锁牙、旋转撑杆,自行排渣部分的挡渣板、旋转撑杆,增加承载力部分的增承面、增承键；和母件内置的无级自锁部分的夹角壁、自锁构件,磁力软性开启部分的L型撬板。本发明母件入孔安装时自行排渣膨紧,公母件结合后自行无级锁定,软性开启,无需手工拧扣,间隙实时可调,半自动安装快捷可靠。(The invention relates to an invisible stepless self-locking semi-automatic connecting piece, which consists of a male piece and a female piece, and is a semi-automatic connecting piece which is directly inserted into the female piece and is locked in a stepless manner in the whole process within the installation station distance, and the male piece and the female piece are respectively self-fixed by adopting hidden hole expansion, thus being more reliable and beautiful. The male part is as follows: the tip of the screwdriver is rod-shaped and is provided with a screw cap. The female member includes: the anti-back teeth, the self-locking teeth and the rotary support rods of the self-fixing part, the slag blocking plates and the rotary support rods of the self-deslagging part and the bearing increasing surfaces and bearing increasing keys of the bearing capacity increasing part are arranged outside the shell; and the female part is internally provided with an included angle wall of a stepless self-locking part, a self-locking component and an L-shaped prying plate of a magnetic soft opening part. The invention has the advantages that the female part can automatically discharge slag and expand tightly when being installed in the inlet hole, the male part and the female part can automatically lock in a stepless manner after being combined, the male part and the female part can be opened flexibly, the manual screwing is not needed, the gap can be adjusted in real time, and the semi-automatic installation is rapid and reliable.)

1. A hidden stepless self-locking semi-automatic furniture connecting piece comprises a male piece, a female piece, a male and female assembly interlocking method, a male and female single piece fixing method, a female piece hole deslagging method and a male and female assembly opening method after interlocking.

2. The male part of claim 1 is characterized in that: a screw cap is added on a sharp-pointed post rod of the screwdriver; the female part described in claim 1 is characterized in that: comprises a master shell, a self-locking component, a guide support, an L-shaped prying plate, a rotary support rod and a slag blocking plate; the interlocking method of the male and female components as described in 1 is characterized in that: the male part is inserted into the female part and then is locked by the female part in a stepless self-locking way; the respective fixing method of the male and female singlets as described in 1 is characterized in that: the male and female parts are respectively expanded and fixed; the method for discharging slag in the female part hole as described in 1 is characterized in that: automatically discharging slag and accumulating when the female part enters the hole; the method for opening the male assembly and the female assembly after interlocking is characterized in that: soft opening by magnetic force.

3. The screwdriver tip post rod and screw cap as described in 2 is characterized in that: one end of the middle cylindrical rod is a sharp head of a screwdriver, and the other end of the middle cylindrical rod is a screw cap.

4. The female housing of claim 2, wherein: the magnetic shielding cover is in a geometric shape of a square body plus a curved surface, is made of non-magnetic metal, and comprises a lower shell and an upper cover which are connected through a screw hole, and the rear part of the cover is provided with a window; the front end surface of the shell is provided with a combination hole, and the two outer sides of the shell are provided with bearing increasing surfaces, bearing increasing keys and anti-withdrawal teeth; two inner side walls of the front part are provided with included angle walls; narrowing the width of the middle section; the tail part is provided with a slag baffle, one side of the tail part is provided with a chuck, and the other inner side of the tail part is provided with a self-locking tooth; easy-opening seams are arranged on two sides of the tail of the bottom plate of the shell.

5. The bearing surface and the bearing key of the bearing device as described in 4 are characterized in that: the convex geometric key teeth are symmetrically distributed on the curved surfaces at two sides in parallel to the axial direction and the top end of the curved surface; the angled wall of claim 4 is characterized by: the wall surface of the combined light hole which is inclined outwards along the two sides of the rear part of the axis is clamped, and the clamping angle is 15-25 degrees; the anti-withdrawal tooth and the self-locking tooth are characterized in that: acute forward or rearward biting insection; the easy open seam as described in 4 is: the joint cutting is used for assisting the separation of the side wall of the tail part and the bottom plate of the shell and comprises a half hole at the front end of the joint cutting; the slag trap as described in claim 4 is characterized in that: a vertical plate on the tail end face connected with the bottom plate; the chuck of claim 4 is characterized in that: the square fork mouth at the end part and the upper and lower fork arms are provided with connecting holes.

6. The self-locking member of claim 2, wherein: the self-locking rolling wheel is in parallel and symmetrical distribution on two sides of a corresponding included angle wall, the self-locking rolling wheel is in contact with the included angle wall, the spring is sleeved at the front end of the guide rod, the tail part of the guide rod is connected with the end cap, and the self-locking rolling wheel is arranged in the rolling wheel sleeve.

7. The guide rod of claim 6 is characterized in that: the tail end of the cylindrical rod is provided with a key slot or a tangent plane and a fixing hole; the spring of claim 6 is characterized in that: a bracing spring; the roller sleeve according to claim 6 is characterized in that: the left and right through holes are sleeved on the self-locking rollers, a movable gap is reserved between the self-locking rollers, the self-locking rollers on one side can jump out, and the self-locking rollers on the other side can be limited to jump out; the self-locking roller as described in claim 6 is characterized in that: the cylinder has no shaft and no hole; the end cap of claim 6 is characterized by: the size of the connecting rod is larger than the rod diameter of the guide rod, and the connecting rod is provided with a connecting hole.

8. The guide support according to claim 2, characterized in that: the upper and lower surfaces of the geometric body are provided with connecting holes, and the front and rear surfaces are provided with guide holes.

9. The L-shaped pry plate is characterized in that: the magnetism attracting metal is made of L-shaped wall plates, two ends of each corner are shaft arms of the prying plate, and one surface of each L-shaped wall plate, which is attracted by magnetic force, is a long edge.

10. The rotating stay bar of claim 2, wherein: one end of the rotary supporting rod is provided with a connecting hole which is forward in an acute angle, the back wall surface of the other end of the rotary supporting rod is provided with a cam, and one side of the cam is provided with an occlusion tooth.

11. The method for the stepless self-locking of the male part by the female part after the male part is inserted into the female part as described in the claim 2 is characterized in that: after the male part is inserted into the combining hole of the female part, the male part does not need to be screwed manually, but the rollers of the self-locking component are helped to symmetrically extrude and clamp the male part pole through the counterforce of the included angle wall in the female part, so that the male part pole is automatically locked and cannot be withdrawn, and the real-time stepless locking is realized in the whole course of the pole.

12. The method for respectively expanding and fixing the male and female parts as described in the claim 2 is characterized in that: the male part at the tip of the screwdriver is screwed on the anti-retreating rubber particles (elements used conventionally) through a special screwdriver head, and the diameter of a screw cap of the male part is slightly larger than the inner diameter of the anti-retreating rubber particles, so that the anti-retreating rubber particles are expanded tightly for the second time; the female member is through the rotatory vaulting pole of tail end, props open the parent afterbody and prevents moving back the tooth section after the hand-hole touches the end, realizes propping open and expands tightly.

13. The method for automatically discharging slag and accumulating when the female part enters the hole is characterized in that: the rotary support rod is in a front-mounted state before being occluded to play a role in exploring a way to remove slag, the thickness of the rotary support rod is half of that of the female part and the cam on the outer end face of the female part, the slag blocking plate is in a front-mounted state to reserve enough storage space for accumulated slag, and the accumulated slag is automatically accumulated and discharged along with the pushing of the female part in place so that the residual slag is not obstructed.

14. The method for magnetically soft opening as claimed in claim 2, wherein: through magnetic force adsorption, and through the component with magnetic force diversion transmission, realize soft opening by oneself after public female subassembly interlocking, need not artifical rigid to twist and detain.

Technical Field

The invention relates to the technical field of furniture connecting pieces, in particular to an invisible stepless self-locking semi-automatic connecting piece.

Background

Furniture connectors are commonly used in the industry as hardware-on-demand. Most of the current market adopted are: one is the traditional three-in-one and two-in-one fastener for open installation. The other type is a novel hidden plastic buckle single piece, a metal buckle external member, a tooth-withdrawing-preventing male-female embedded and occluded fastener and the like. The former is the current generally adopted connection mode, and is firm reliable, but the trompil of female fastener is on the visible face, and is very pleasing to the eye, need the manual screw-on, and complex operation and existence exert oneself too hard, damage fastener and face's phenomenon. When the holes are aligned in the assembling process of the plates, the self-locking function is not realized in the connection process of the fasteners, the existing aligned hole positions are not yet aligned and the fasteners are buckled to be bounced, and the holes are aligned repeatedly. Because the fastener does not have the sediment function, there is the stifled hole of sediment of remaining, influences the condition that the public female member is taken one's place and is twisted and detain. The latter is like two kinds of similar hidden furniture connecting pieces that chinese patent CN305496824S and CN206458679U etc. disclose, because the distance of installation station is too small, and need push-and-pull fastening after embedding, two-way force is used during installation, the operation is difficult and cumbersome, can not be used with traditional fastener, the assembly of multiple plates and large plates is difficult to realize, some single pieces are fixed by anti-receding teeth completely, can not realize secondary expansion, the tensile strength after installation, poor bearing force, the other side is fixed by the wood card slot of pre-milling, easy-to-pull hurts the face, if the connection face clearance can not be adjusted, or some realization is hidden but can not dismantle the scheduling problem, so not adopted by the industry. Therefore, the semi-automatic installation is hidden, more beautiful, more reliable and more convenient, and is always an expected replacement product in the industry at home and abroad.

Disclosure of Invention

The technical problem to be solved by the invention is to realize hidden stepless self-locking, self-deslagging, semi-automatic quick installation, large installation station distance, unidirectional force application of male and female parts, capability of being mixed with a traditional fastener, reliable self-fixation of male and female single parts, reliable plate assembly, stronger bearing force, soft opening, nondestructive disassembly and assembly, proper fault tolerance and real-time stepless adjustment of the connection surface gap according to the defects of the prior art.

The scheme is that the female member is hidden, quick and reliable and self-fixed: the visible surface of the plate is not provided with holes, only the contact end surface of the plate is provided with holes, a female part is arranged in the plate, the female part comprises anti-withdrawal teeth and holes which do not adopt interference fit, only small sections of anti-withdrawal teeth are arranged on two sides of the tail part of the female part, a self-locking rotary support rod is arranged at the tail end, and an easy-opening seam is convenient to open and expand, so that the stroke of knocking and self-locking the female part in place is only 11mm, the quick installation in the holes of the female part is realized, and the self-fixing is invisible and reliable.

The second scheme is that the mother piece automatically discharges slag when entering the hole and overcomes the defect that the mother piece can not be in place due to a proper error of the hole depth of the plate: the tail end of the female part is provided with a rotary stay bar for pre-exploring to remove slag and a rear slag baffle plate to intercept residual slag. The wall surface of the outer end of the rotary support rod is provided with a bottom contact cam to prevent the residue pad bottom from occupying or the hole depth from being shallow so as to be convenient for eating, so that the automatic slag discharge and proper fault tolerance are realized, and the female part is smoothly put in place.

The third scheme is that the design and the hidden self-fixing of the public parts are as follows: the end of the male part is set to be a screwdriver tip so as to be conveniently combined with the female part, and the other end of the male part is set to be a screw cap so as to be convenient for screwing down the anti-receding colloidal particles in the hole at the contact part of the male part and the female part, thereby realizing secondary expansion and hidden reliable self-fixation.

The fourth scheme is to improve the bearing capacity of the panel after the furniture is assembled: the thickness of the female piece is not larger than 8mm so as to reduce the wound of the plate caused by the open holes, and the bearing increasing cylindrical surfaces and the bearing increasing keys are arranged on the two sides so as to improve the bearing capacity of the assembled plate (generally, the bearing capacity can be improved by about 80%).

The fifth scheme is that the female part and the male part are in stepless reliable self-locking and rapid semi-automatic installation: the front part of a female part is provided with a 20-degree included angle wall, self-locking components are symmetrically arranged on the left and right sides and contain self-locking rollers with the diameter of 5mm, the self-locking components are fixedly guided by a guide support, and when a male part is inserted into the female part and then withdraws, the self-locking rollers form symmetrical clamping locking on the male part through the reaction force of the included angle wall under the mutual matching of the components, so that the quick, reliable and stepless self-locking semi-automatic installation is realized.

The sixth scheme is that the female part and the male part are assembled and self-locked and then are soft opened and can be disassembled without damage: the self-locking device is characterized in that a parent shell, an upper cover and a guide support in the parent shell are made of non-hydrophilic metal materials such as stainless steel, the upper cover is provided with a magnetic permeable window, other elements are made of hydrophilic steel, the tail end of a self-locking component in the parent shell is provided with an end cap and is combined with an L-shaped prying plate, the prying plate is externally adsorbed by a strong magnet, the self-locking component is pried to move and unlock through the acting force of the prying plate, and quick soft opening and nondestructive detachment are achieved.

The seventh scheme is that the distance of the installation station is ensured and the installation clearance is adjusted in real time: the size of a pole of a joint part of the male part and the female part is set to be more than 25mm so as to ensure the distance of an installation station. And the joint part of the male part and the female part at 25mm is in whole-course stepless self-locking, so that the real-time adjustment of the installation clearance can be realized.

The eight scheme is that public female subassembly combines to be one-way hard, can use with traditional trinity fastener thoughtlessly: the combination of public female subassembly and traditional trinity fastener combination mode, exert oneself the direction the same, all are the one-way effort of disect insertion, and the distance of installation station is close, consequently can realize mixing.

The invention has the advantages that: the male and female parts are fixed by adopting hidden hole positions respectively, so that the furniture is more perfect after being assembled; the male and female parts are self-fixed in an expansion type, so that the male and female parts are firmer and more reliable; after the male assembly and the female assembly are combined, the male assembly and the female assembly are automatically and steplessly locked, the gap is adjusted in real time, manual screwing is not needed, and the locking device is more convenient and faster; the bearing capacity of the plate after the furniture is assembled is improved by arranging the bearing-increasing keys and the bearing-increasing surfaces on the female part, and the installation is smoother by rotating the support rods and the slag baffle plates to automatically remove slag in advance; the magnetic force soft opening and dismounting are adopted, so that the damage to the fasteners and the hole positions of the plate due to manual force is effectively prevented; the advantages of large distance of installation stations of the traditional three-in-one fastener and one-way forced direct-insert combination are kept, so that the three-in-one fastener is convenient to install and use in a mixed manner, and is more favorable for popularization and replacement; the semi-automatic furniture installation device has the advantages that the semi-automatic installation is convenient and fast, the installation procedure is simplified, the working efficiency is improved, and the assembled furniture is more perfect, lossless, firm and reliable.

The economic benefit is that the furniture assembly connecting piece is a hardware which is commonly adopted in the industry at home and abroad and is just needed, and the using amount is very large. Due to the defects of the traditional connecting piece, a quick and reliable product is urgently needed to be replaced, the appearance and the quality of the assembled furniture can be improved, the working efficiency and the product competitiveness are improved, and the product value is certainly and greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below.

Fig. 1 is a schematic view of the internal structure of the hidden stepless self-locking connector in combination with the male and female members.

FIG. 2 is a three-dimensional view showing the initial state of the female member and a partial sectional view of the connection screw hole in the present invention.

Fig. 3 is an external elevation view showing the female member in a tensioned state in the present invention.

Fig. 4 is a front and bottom view of the internal structure of the male and female members in the unlocked state.

FIG. 5 is a schematic cross-sectional view of a female housing of the present invention.

Fig. 6 is a schematic view of the self-locking member inside the female member of the present invention.

Fig. 7 is a schematic view of the internal component guide support of the female member of the present invention.

FIG. 8 is a schematic view of an L-shaped pry plate as the internal member of the female member of the present invention.

FIG. 9 is a schematic view of the pivoting stay of the female end member of the present invention.

Fig. 10 is a schematic view of a male member of the present invention.

Fig. 11 is a three-dimensional view of the upper cover of the female member of the present invention.

In the figure: A. a male part; B. a master; C. a self-locking member; 1. a female housing; 2. a bearing increasing key; 3. increasing bearing curved surface; 4, preventing tooth backing; 5. easy opening of the seam; 6. self-locking teeth; 7. an included angle wall; 8. a connecting screw hole; 9. a bottom plate convex column; 10. rotating the stay bar; 11. a bottoming cam; 12. a first anchor hole; 13. a slag trap; 14. a guide bar; 15. a roller sleeve; 16. self-locking rollers; an end cap; 18. a spring; 19. a second anchor hole; 20. a guide support; 21. positioning the unthreaded hole; an L-shaped pry plate; 23. the alpha surface of the crow plate; 24. a crow plate beta surface; 25. a pry plate shaft; 26. a post rod; 27. a screwdriver tip; 28. a screw cap; 29 anti-withdrawal colloidal particles; 30. a female member upper cover; 31. a countersunk hole; 32. a window; 33. countersunk head combined with unthreaded hole; 34. a guide hole; 35. loosening the lock clearance; 36. a chuck; 37. a strong magnet; 38 circular holes.

In the figure: a (see fig. 10) comprises 26, 27, 28; b (see FIG. 2) consists of 1, 10, 20, 22, 30 and C; 1 (see fig. 5, 11) comprises 2, 3, 4, 5, 6, 7, 8, 9, 12, 13, 30, 31, 32, 33; c (see fig. 6) comprises 14, 15, 16, 17, 18, 19, 38; 10 (see fig. 9) includes 6, 11, 12; 20 (see fig. 7) includes 21, 34; 22 (see fig. 8) comprises 23, 24, 25.

Detailed Description

The objects, technical solutions and advantages of the present invention will be further described with reference to the accompanying drawings and examples.

The first embodiment is as follows: as 0004, the initial state of the female part B shown in the figure 2 is arranged in the hole of the contact end face of the plate, and the female part B comprises the anti-back teeth 4 and the hole wall of the plate are not in interference fit, so that the hole is conveniently inserted; the anti-withdrawal tooth 4, the easy-opening seam 5, the self-locking tooth 6, the rotary support rod 10 and the slag baffle 13 are arranged on the tail side of the female part B, the rotary support rod 10 is anchored in the chuck 36 through the anchor hole I12, and the bottom-touching cam 11 is arranged on the outer end wall surface to facilitate bottom-touching rotation; easy-opening seams 5 are arranged on two sides of the tail of the bottom plate of the female member B, so that the anti-withdrawal teeth 4 are conveniently expanded; when the female part B enters the hole, the rotary support rod 10 is in contact with the bottom of the hole, and is locked by the self-locking teeth 6 in an occluded manner under the action of knocking force, the occluded stroke of the self-locking teeth 6 is only 11mm, the tail of the female part B is quickly opened when the female part B is knocked conveniently, the tensioning state of the drawing 3 is achieved, and quick expansion, hidden type reliable self-fixing of the anti-withdrawal teeth 4 sections and the hole wall are achieved.

Embodiment two: when the female part B enters the hole, the rotary support rod 10 and the slag baffle plate 13 push slag in front of the hole, so that the automatic slag discharge and slag baffle are realized; the protruding size of the rotary support rod 10 is 5mm, so that a 5mm gap is reserved at the bottom of a hole of the plate after the female part B is in place, the bottom padding of residual slag is effectively prevented, or when the hole depth is shallow, the protruding part is convenient to eat, and the phenomenon that the female part B cannot be installed in place due to residual slag or a proper amount of error is avoided.

The third embodiment is as follows: as 0006, the male part a is arranged into three parts, namely a column rod 26, a screwdriver head 27 and a screw cap 28, the anti-falling colloidal particles 29 are preset in holes at the contact part of the plate, the male part a is screwed in the anti-falling colloidal particles 29 through a special screwdriver head, and the anti-falling colloidal particles 29 and the hole wall of the plate are secondarily expanded due to screwing in of the screw cap 28, so that hidden reliable self-fixing is realized.

The fourth embodiment: as stated in 0007, it is the thickness of the female element B that is set to be not more than 8mm to reduce the trauma to the panel by the opening in which it is in place; the two sides of the female member B are provided with additional bearing curved surfaces 3, so that the additional bearing curved surfaces are combined with the curved surfaces of the hole wall to decompose the stress of the upper and lower fragile surfaces of the hole wall of the plate; the bearing increasing key 2 is arranged at the top of the bearing increasing curved surface 3, and after the female part B enters the hole, the bearing increasing key 2 is inserted into the side wall of the hole of the plate hole so as to secondarily decompose the stress of the fragile surface of the hole wall of the plate and improve the bearing capacity of the plate by about 80 percent after being assembled (see the left view of fig. 2).

The fifth embodiment: as 0008, the inner wall of the front part of the female part B is provided with a 20-degree included angle wall 7; the self-locking components C on the two sides of the inner part are guided by the guide support 20 in the middle part and are propped into the included angle wall 7 through the spring 18 to reset, and the stroke is limited by the end cap 17; when the male part A is inserted into the female part B through the countersunk head combination unthreaded hole 33, the self-locking roller 16 is opened by the screwdriver tip 27, and the self-locking components C at two sides are shifted to move back, so that the male part A can smoothly enter; when the male part A retreats, the self-locking roller 16 is prevented from rebounding by the supporting force of the spring 18 and is tightly attached to the included angle wall 7 and the column rod 26, the self-locking roller 16 forms symmetrical squeezing and clamping on the column rod 26 through the reaction force of the included angle wall 7, the column rod 26 is locked, and the whole section of the column rod 26 is a uniform cylindrical surface, so that the whole-course stepless locking is realized, the manual screwing is not needed, and the self-propelled slag discharging function 0030 is realized, so that the semi-automation of the quick, reliable and real-time stepless self-locking of the male part and the female part AB is realized (see figure 1). The guide rod 14 and the roller sleeve 15 of the self-locking component C are integrated; the self-locking roller 16 is arranged in the roller sleeve 15, the roller sleeve 15 can prevent the self-locking roller 16 from jumping out while ensuring the normal operation of the self-locking roller 16, but the self-locking roller can jump to the direction of the included angle wall 7 without limitation (see figure 1), so that the assembly of the self-locking roller 16 is facilitated; the guide rod 14 is sleeved with the spring 18 and then penetrates into the guide hole 34 of the guide support 20, and then enters the round hole 38 of the end cap 17 and then is anchored and connected through the anchor hole II 19, and the guide support 20 is positioned through the bottom plate convex column 9; the female housing 1 and the female upper cover 30 are connected by flat head screws through the connecting screw holes 8 (see fig. 2).

Embodiment six: as 0009, the female housing 1, the guide support 20, and the female upper cover 30 are made of non-magnetic metal material such as stainless steel, and the female upper cover 30 is provided with a window 32 for magnetic permeability, and other elements are made of magnetic material; a pry plate shaft 25 (see fig. 1) of the L-shaped pry plate 22 is clamped between the end cap 17 and the guide holder 20 below the guide rod 14, and a pry plate beta surface 24 is abutted against the rear end surface of the guide holder 20; the length ratio of the pry plate alpha surface 23 to the pry plate beta surface 24 of the L-shaped pry plate 22 is ensured to be more than 2: 1 (the ratio adopted here is 2.24), so that the L-shaped pry plate 22 can be conveniently forced; outside the hole on L type pinch plate 22, pasting the plate surface and adsorbing pinch plate alpha face 23 with strong magnet 37 and raising, along with L type pinch plate 22 sled end cap 17, pulling auto-lock component C through pinch plate axle 25 and moving to the rear axle together, auto-lock gyro wheel 16 was taken back this moment, appears the pine between post 26 and the auto-lock gyro wheel 16 and locks clearance 35, and public a can be pulled out at any time and realize that soft opening after public female member AB equipment auto-lock is harmless dismantlement (see fig. 4).

Embodiment seven: as 0010, when the male part and the female part AB are combined and then inserted into the whole section of the post 26 as 0033, the whole process is real-time stepless locking, and the real-time adjustment of the assembly gap from large to small is naturally realized; the male part A can be pulled out at any time after being opened as 0034, and the adjustment of the assembly gap from small to large is also realized. The size of the post 26 of the male part A is set to be more than 25mm, and the whole part of the post is exposed outside the plate after the post is fixed, so that the distance between the mounting stations is ensured to be more than 25 mm.

Embodiment eight: like 0011 what the combination of public piece female member AB adopted is direct bayonet type, installation station distance is like 0035 more than 25mm, with traditional trinity fastener insertion mode, the direction of exerting oneself is the same, installation station distance is close, consequently can realize using in mixture.