DK2692624T3

DK2692624T3 - Universal liquid container

Info

Publication number: DK2692624T3
Application number: DK12178521T
Authority: DK
Inventors: Pin-Chien Wu
Original assignee: Pin-Chien Wu
Priority date: 2012-07-30
Filing date: 2012-07-30
Publication date: 2015-01-26
Also published as: EP2692624B1; EP2692624A1

Description

Description tom of the insert portion and the inner surface of the link ing groove, aligns with theupperhoie, and communicates 1, Field of the Invention with the linking groove. The lower hole has a major axis defined in the tower hole and imaginatively extending to [0001] The present invention relates to a container, meet an adjacent abutting surface at a 45-degree angle, andmoreparticularlytoafloatablecontainerservingmul- [0012] The cap is mounted on a top of the casing. The tipie purposes. cap has four buckling portions respectively disposed on

Such a container is known from US 2, 679, 735 which fourcornersofthecapforcorrespondingfothefourinsert represents the closest prior art and discloses all the tea- portions of the abutting edge. Each buckling portion has tures of the preamble of independent claim 1. a top hole. The top hole is defined through the buckling portion, aligns with the upper hoie of a corresponding 2. Description of Related Art one of the insert portions, and has an olivary shape cor responding to that of the upper holes.

[0002] A conventional container includes a casing, a [0013] The at least one linkage disc is partially and cap buckled on the casing and a space defined in the respectively inserted into at least one of the linking container for receiving objects. grooves. Each one of the at least one linkage disc has [0003] However, the conventional container does not fourconnectingoriticeslongitudinallydefinedthroughthe have a connecting mechanism to link with another con- linkage disc for selectively aligning to one of the upper ventionai container such that the conventional container holes. Each connecting orifice has an olivary shape cor- is individually utilized and is not able to be assembled responding to that of each of the upper holes and selec- withotherconventional containers to form a floating plat- tively communicates with the upper hole and the lower form assembly or a raft. Therefore, the conventional con- hole of one of the insert portions. Two major axes of ad- tainer cannot provide diversified functions. jacent two of the connecting orifices are perpendicular [0004] To overcome the shortcomings, the present in- to each other. vention tends to provide a floatable container to mitigate [0014] Theatleastonebucklingboltismountedonthe or obviate the aforementioned problems. casing. Each one of the at least one buckling bolt is in- 10005] The main objective of the invention is to provide serted into the top hole of one of the buckling portions, an improved multi-purpose floatable container, which in- the upper hole aligning to the top hole, the connecting eludes a casing, a rectangle cap, at least one linkage orifice of one of the at least one linkage disc aligning with disc, and at least one buckling bolt. the upper hole, and the lower hole aligning to the upper [0006] Thecasing has a rectangular bottom plate and hole. a wall. [0015] Each one of the at least one buckling bolt has [0007] The wall surrounds an edge of the bottom plate a shank, an elongated knob, an elongated bottom block- and upwardly extends from the bottom plate. The wall er, and an elongated middle blocker. has an abutting edge surroundingly disposed on a top of [0016] The knob is disposed on a top of the shank and the wail, outwardly extending from the top of the wall, has two ends radially extending from the buckling bolt and being in a rectangular annular shape such that the toward two opposite directions to form an olivary shape abutting edge has four abutting surfaces and four cor- being same as that of each top hole. The knob has a ners. Each abutting surface is disposed between the ad- major axis defined in the knob, jacent two corners of the abutting edge. Each corner of [0017] The bottom blocker is disposed on a bottom of the abutting edge has an insert portion formed on the the shank, has two ends radially extending from the corner. Each insertportion has a linking groove, an upper shank toward two opposite directions, and has an olivary hole, an upper enlarged hole, and a lowar hole. shape being same as that of each top hole such that the [0008] The linking groove is defined in the insert por- bottom blocker has a major axis defined in the bottom tion, blocker to imaginatively meet that of the knob at 45 de- [0009] The upper hole is formed as an olivary shape, grees in a longitudinal direction of the shank for buckling and defined through a top of the insert portion and an a bottom surface of a corresponding insert portion, inner surface of the linking groove. The upper hole has [0018] The middle blocker is disposed between the a major axis defined in the upper hole and imaginatively bottom blocker and the knob, has two ends radialiy ex- extending to meet an adjacent abutting surface at a 45- tending from the shank toward two opposite directions, degree angle. and has an olivary shape being same as that of each [0010] The upper enlarged hole is defined in the inner upper hole such that the middle blocker is able to be surface of the finking groove, located adjacent to the up- received in a corresponding upper enlarged hole for per hole, and communicates the upper hole with the link- buckling an inner top surface of the upper enlarged hole, ing groove such that an inner diameter of the upper en- [0019] Other objects, advantages and novel features larged hole is equal to or greater than a maximum diam- of the invention wili become more apparent from thefoi- eter of the upper hole. lowing detailed description when taken in conjunction [0011] The olivary lower hole is defined through a bot- with the accompanying drawings. IN THE DRAWINGS 11 and a wall 12. The wall 12 surrounds an edge of the bottom plate 11 and upwardly extends from the bottom [0020] plate 11. The wall 12 is tapered toward a bottom of the wall 12 such that an enclosed area at a top of the wall

Fig. 1 is a partially perspective view of a multi-pur- 12 is greater than an enclosed area at the bottom of the pose floatable container in accordance with the wall 12. present invention; [0023] The wall 12 hasan abutting edge 13 surround-

Fig. 2 is an exploded perspective view showing an ingly disposed on the top of the wall 12 and outwardly assembly of multiple floatable containers in Fig. 1; extending from the top of the wall 12. The abutting edge

Fig. 3 is an exploded perspective view of the multi- 13 is in a rectangular annular shape to form a sealing purpose floatable container in Fig. 1; collar 14 upwardly extending from the abutting edge 13,

Fig. 3A is a partial top view showing an angle of a and has four abutting surfaces 132 and four curved cor- major axis of a upper/lower hole relative to an adja- ners133. Each abutting surface 132isdisposedbetween cent abutting surface in Fig. 3; adjacent two of the comers 133 of the abutting edge 13.

Fig. 3B is a partial top view showing an angle of a The sealing collar 14 is located along the abutting edge major axis of a positioning hole relative to that of a 13 adjacent to the abutting surfaces 132 such that the crossed upper hole in Fig. 3; sealing collar 14 is formed as a rectangular annular

Fig. 3C is a partial top view showing an angle of two shape. Each comer 133 of the abutting edge 13 has an major axes of adjacent two connecting orifices rela- insert portion 131 formed on the comer 133. tive to each other in Fig. 3; [0024] Each insert portion 131 has a linking groove

Fig. 3D is partially exploded perspective view of the 134, an upper hole 135, a lower hole 136, an elongated floatable container in Fig. 3; positioning hole 1352, and an upper enlarged hole 1351.

Fig. 4 is a partially bottom view of a cap of the multi- The linking groove 134 is defined in toe insert portion purpose floatable container in Fig. 1; 131. The upper hole 135 is defined through a top of the

Fig. 5 is a cross-sectional side view of the multi-pur- insert portion 131 and an inner surface of the linking pose floatable container in Fig. 1; groove 134. The tower hole 136 is defined through a bot-

Fig. SAisanenlarged view of the multi-purpose float- tom of the insert portion 131, aligned to the upper hole able container in Fig. 5; 135, and communicates with the linking groove 134. The

Fig. 6 is a top view showing a buckling bolt of the elongated positioning hole 1352 is defined through die multi-purpose floatable container in Fig. 1; insert portion 131, crosses and communicates with the

Fig. 7 is a perspective view showing the multiple upper hole 135. The upper enlarged hole 1351 isdefined floatable containers in Fig. 1 being assembled; in the inner surface of the linking groove 134, located

Figs. 8 and 9 are operational perspective views adjacent to the upper hole 135, and communicates the showing the multiple floatable containers in Fig. 1 upper hole 135 with the linking groove 134 such that an being assembled as a platform; inner diameter of the upper enlarged hole 1351 is equal

Figs. 10 to 11 are operational views showing the cap to or greater than a maximum diameter of the upper hole detached from a casing; 135.

Fig. 12 is an exploded perspective view of the multi- [0025] Each of the upper holes 135 and the aligned purpose floatable container showing the cap de- lower holes 136 is formed as an olivary shape. With ref- tached from the casing; erence to Fig. 3A, the upper hole 135 has a major axis

Fig. 13 is an operational perspective view showing imaginatively extending to meet any one of the two ad- the multiple floatable containers in Fig. 1 utilized for jacent abutting surfaces 132 at a forty-five-degree angle, plant-cultivation; and the lower hole 136 has a major axis imaginatively

Fig. 14 is an operational side view in partial section extending to meet any one of the two adjacent abutting showing the multiple floatable containers in Fig. 1 surfaces 132 at a forty-five-degree angle. With reference being stacked; to Fig. 3B, each positioning hole 1352 is formed as an

Fig. 15 is a partially exploded perspective view of an olivary shape, which is same as that of the upper hole alternative embodiment of a multi-purpose floatable 135, such that the positioning hole 1352 has a major axis container in accordance with the present invention; imaginativelymeetingthemajoraxisofthecrossedupper and hole 135 at a forty-five-degree angle. The cap 21 is

Fig. 16isanotherpartiallyexplodedperspectiveview mounted on a top of the casing 10. The cap 21 is in a of the multi-purpose floatable container in Fig. 15. rectangular shape and has four depressions 211, an in ner collar 212, and a sealing slot 213, The four dapres- [0021] With reference to Figs. 1 to 6, the multi-purpose sions 211 are respectively defined in four corners of the floatable container of the present invention comprises a cap 21. Each depression 211 has a middle part inwardly casing 10, a cap 21. at least one linkage disc 30 and at indented. The inner collar 212 downwardly extends from least one buckling bolt 40. a bottom of the cap 21 and surrounds the bottom of the [0022] The casing 10 has a rectangular bottom plate cap 21. The sealing slot 213 is defined between the inner collar212and an inner bottom surface fortightly receiving [0029] The knob 42 is disposed on a top of the buckling the sealing collar 14 of the casing 10. The fourdepres- bolt 40. The knob 42 has two ends radially extending sions211 havefourbucklingportions22respectiveiyout- from theshank41 toward two opposite directions to form wardly extending from bottoms of the depressions 211 an olivary shape being same as that of each top hole 221 for corresponding respectively to the four insert portions for buckling the knob 42 on the two buckling seats 23 of 131 of the abutting edge 13. Each buckling portion 22 is each of the buckling portions 22. The knob 42 extends a flat plate and has an outer surface aligned with an outer along a direction being perpendicular to an axis of the surface of a corresponding insert portion 131. shank 41. One of the two ends of the knob 42 is provided [0026] Each buckling portion 22 has a top hole 221, for selectively buckling on the middle part of an adjacent two buckling seats 23, and two slopes 231. The top hole depression 211. 221 is defined through the buckling portion 22. The two [0030] The bottom blocker 43 is disposed on a bottom buckling seats 23 are respectively formed on two sides of the buckling bolt 40. The bottom blocker 43 has two of the top hole 221, and respectively located adjacent to ends radially extending from the shank 41 toward two two ends of a minor axis of the top hole 221 such that oppositedirectionsandhasanoiivaryshape being same the two buckling seats 23 face to each other. Each buck- as that of each top hole 221, such that a major axis of ling seat 23 protrudes from the buckling portion 22 such the bottom blocker 43 and that of the knob 41 imagina- that the adjacent two slopes 231 are inclined from the tivelymeetata45-degreeangleinalongitudinaidirection buckling seat 23 toward the buckling portion 22. The two of the shank 41 for buckling a bottom surface of a corre- slopes 231 are respectively formed on two ends of each spending insert portion 131. of the buckling seats 23. Each top hole 221 corresponds [0031] The middle blocker 44 is disposed between the to and aligns with the upper hole 135 of a corresponding bottom blocker 43 and the knob 42. The middle blocker insert portion 131 and has an olivary shape correspond- 44 has two ends radially extending from the shank 41 ing to that of the aligned upper hole 135. A width and a toward two opposite directions and has an olivary shape length of each of the top holes 221 are respectively great- being same as that of each upper hole 135 to be received er than those of each of the upper holes 135. Each top in a corresponding upper enlarged hole 1351 forbuckling hole 221 has a rounded top enlarged hole 2211 and two an inner top surface of the upper enlarged hole 1351. auxiliary holes 2212. The rounded top enlarged hole [0032] The upper blocker 45 is disposed between the 2211 is defined in a bottom of the cap 21, andalignsand knob 42 and the middle blocker 44. With reference to Fig. communicates with the top hole 221. The two auxiliary 6, the upper blocker 45 is positioned adjacent to the knob holes 2212 are defined through the buckling portion 22, 42, has two ends radially extending from ttie shank 41 are respectively located on two sides of the top hole 221, toward two opposite directions, and hasan olivary shape and communicate with the top enlarged hole 2211. Each to fit with the two auxiliary holes 2212 of the correspond- of the auxiliary holes 2212 is tapered toward an outer ing buckling portion 22 such that the upper blocker 45 end of the auxiliary hole 2212. has a major axis defined in the upper blocker 45, imag- [0027] The at least one linkage disc 30 is partially in- inativeiy meeting the major axis of the knob 42 at a forty- sertedrespectivelyintoatleastoneofthelinkinggrooves five-degree angle in a longitudinal direction of the shank 134. Each linkage disc 30 has a thickness being equal 41, and imaginatively meeting the major axis of the mid- to a width of the linking groove 134, a square central dleblocker44ataforty-five-degreeangleinalongifudinal orifice 31 axially defined through a center of the linkage direction of the shank 41 for buckling with an inner top disc 30, and four connecting orifices 32 longitudinally de- surface of the top enlarged hole 2211. lined through the linkage disc 30 and arranged around [0033] Preferably, the two buckling seats 23 can be thecentral orifice31. Each connecting orifice 32 has an omitted,suchthattheknob42oftheatleastonebuckling olivary shape corresponding to that of each of the upper bolt 40 is downwardly buckled on a top surface of the holes 135 for selectively communicating with the upper buckling portion 22 which is located on two sides of the hole 135 and the lower hole 136 of one of the insert por- corresponding top hole 221. When the knob 42 with the tions 131, With reference to Fig. 3C, two major axes of corresponding buckling bolt 40 are rotated at ninety de- adjacent two of the connecting orifices 32 imaginatively grees, the knob 42 is able to align with the corresponding extend and are perpendicular to each other. top hole 221 such that Hie bottom of the knob 42 falls [0028] Each one of the at least one buckling bolt 40 is into the top hole 221. inserted into the top hole 221 of one of the buckling por- [0034] With reference to Fig. 5, the casing 10 is hollow tions 22, the upper hole 135 aligning to the top hole 221, and the sealing slot 213 of the cap 21 is elastically en- the connecting orifice 32 ofoneoftheatleastone linkage gaged with the seating collar 14 of the casing 10 such disc 30 aligning to the upper hole 221, and the tower hole that the casing 10 is sealed to prevent air-leakage. The 136 aligning to the upper hole 135!br respectively locking container of the present invention is able to receive food one of the at least one linkage disc 30. Each buckling or clothes for moisture-proof or preservation purposes, bolt 40 has a shank 41, an elongated knob 42, an elon- Furthermore, the container of the present invention is gated bottom blocker 43, an elongated middle blocker floatable and is provided for survival during flood short- 44, and an elongated upper blocker 45. age or tsunami or any other disaster.

[0035] Multiple containers of the present invention can selectively abuts one end of a corresponding linking be assembled to form a floating platform. With reference groove 134 to keep the linkage disc 30 from rotating rel- to Fig. 7, four containers of the present invention are as- ativetothe casing 10 whentwocasings 10 are connected sembled. The abutting surfaces 132 of the containersare with each other by the linkage disc 30. Accordingly, the abutted against each other and the linkage disc 30 is combination of the casings 10 can be enhanced, positioned in a middle of the four containers. Four buckling bolts 40 are inserted into the linkage disc 30 for combining the four casings 10 and four caps 21 to form a survival floating platform.

[0036] With reference to Figs. 8 to 9, multiple containers of the present invention can be assembled to form a bigger sized platform or a swimming pool.

[0037] With reference to Figs. 10 to 12, originally, the knob 42 is buckled on the middie part of the depression 211 to prevent the knob 42 from detaching accidentally.

When the cap 21 is unsealed, the knob 42 of the buckling bolt 40 needs to be applied with an external force and rotated at ninety degrees. The knob 42 is aligned with the top hole 221 but the upper blocker 45 is not aligned with the two auxiliary holes 2212, such that the buckling bolt 40 cannot be pulled out but the cap 21 is able to be detached.

[0038] The bottom blocker 43 and the middle blocker 44 of the buckling bolt 40 are both buckled with the insert portion 131. Even if one of the bottom blocker 43 or the middle blocker 44 is broken, the buckling bolt 40 will not be detached from the insert portion 131. The upper blocker 45 of the buckling bolt 40 is received in the positioning hole 1352 for positioning the buckling bolt40.

[0039] The bottom blocker 43 and the middle blocker 44 of the buckling bolt 40 are not aligned with the lower hole 136 and the upper hole 135 during unsealing of the cap 21. The buckling bolt 40 is kept buckling with the insert portion 131. Therefore, the cap 21 can be detached without influencing the buckling bolt 40 to maintain a connection between containers.

[0040] With reference to Fig, 13, the container of the present invention is provided for receiving soil for plant-cultivation. The container of the present invention can also be perpendicularly utilized for storing books or tools, functioning as a bookcase or a tool cabinet.

[0041] With reference to Fig. 14, the containers can be stacked upon each other. The abutting edge 13 of the casing 10 abuts against the abutting edge 13 of another casing 10 such that a space is defined between the casing 10 and a bottom of another casing 10 for receiving the linkage disc 30 and the buckling bolt 40 for good storage.

[0042] With reference to Figs. 15 and 16, in the alternative embodiment, the buckling seats 23 as shown in Fig. 3 can be omitted, and the shapes of the top hole, the upper holes 135 and the connecting orifices 32 may be varied to fit with different kinds of buckling bolts 40.

Furthermore, the inner bottom surface of the casing 10 on which the inner collar 212 is formed can be emptied ; or spaced to decrease the material for forming the casing 10. In addition, multiple protrusions 33 are formed on the periphery of the linkage disc 30, and each protrusion 33

Claims

UNIVERSAL LIQUID CONTAINS PATENT CLAIMS

A universal liquid container comprising: A housing (10) having a base plate (11) having a rectangular shape; a wall (12) which encloses an edge of the base plate (11) and extends upwardly from the base plate (11) and has an adjacent edge (13) enclosed on a top of the wall (12) and which extending outwardly from the top of the wall (12) and having a rectangular annular shape such that the adjacent edge (13) has four adjacent surfaces (132) and four corners (133) where each adjacent surface (132) is disposed between the adjacent two corners (133) of the adjacent edge (13), characterized in that each corner (133) of the adjacent edge (13) has an inserted portion (131) formed on the corner (133), wherein each inserted portion (131) has a connecting groove (134) defined in the inserted portion (131); an upper hole (135) formed as an olive shape defined through a top of the inserted portion (131) and an inner surface of the connecting groove (134); wherein the upper hole (135) has a major axis defined in the upper hole (135) which extends imaginatively to meet a neighboring adjacent surface (132) at a 45 degree angle; an upper enlarged hole (1351) defined in the inner surface of the connecting groove (134) disposed adjacent the upper hole (135) and in connection with the upper hole (135) with the connecting groove (134) such that an internal diameter of the upper enlarged hole (1351) equal to or greater than a maximum diameter of the upper hole (135); and an olive-shaped lower hole (136) defined through a bottom of the inserted portion (131) and the inner surface of the connecting groove (134) which aligns with the upper hole (135) and communicates with the connecting groove (134) ; wherein the lower hole (136) has a major axis defined in the lower hole (136) which extends imaginatively to meet a neighboring adjacent surface (132) at a 45 degree angle; and a rectangular cap (21) mounted on top of the housing (10) having four curvature portions (22) respectively disposed on four corners of the cap (21) to correspond to the four inserted portions (131) of the adjacent edge (13), each curvature portion (22) having a top hole (221) defined through the curvature portion (22) which aligns with the upper hole (135) in a corresponding portion of the inserted portions (131), and having an olive shape similar to the shape of the upper holes (135); at least one coupling disc (30) partially and respectively inserted into at least one of the connecting grooves (134), each of the at least one coupling disc (30) having four connecting openings (32) defined in the longitudinal direction through the coupling disc ( 30) to selectively align with one of the upper holes (135), each connecting opening (32) having an olive-shaped shape corresponding to the shape of each of the upper holes (135) selectively associated with it. upper hole (135) and lower hole (136) in one of the inserted portions (131), wherein two principal axes of adjacent two of the connecting openings (32) are perpendicular to each other and at least one curvature bolt (40) is mounted on the housing (10), wherein each of the at least one curvature bolt (40) is inserted into the top hole (221) of one of the curvature portions (22), the upper hole (135) flush with the top hole (221), wherein the connecting opening (32) in one of the at least one coupling disc (30) flush with the upper hole (135) and wherein the lower hole (136) aligns with the upper hole (135); each of the at least one curvature bolt (40) having a shaft (41); an elongated knob (42) disposed on top of the shaft (41) having two ends extending radially from the curvature bolt (40) in two opposite directions to form an olive shaped shape which is the same as the shape of each top hole (221), wherein the knob (42) has a major axis defined in the knob (42); an elongated bottom block (43) disposed on a bottom of the shaft (41) having two ends extending radially from the shaft (41) in two opposite directions and having an olive-shaped shape which is the same as the shape of each top hole (221) such that the bottom block (43) has a major axis defined in the bottom block (43) for imaginatively meeting the block (42) 45 degrees in a longitudinal direction of the shaft (41) for curving a bottom surface of a correspondingly inserted portion (131) and an elongated center block (44) disposed between the bottom block (43) and the knob (42) and having two ends radially extending from the shaft (41) in two opposite directions and having an olive-shaped shape that is the same as the shape of each upper hole (135) so that the center block (44) can be received in a corresponding upper enlarged hole (1351) for this way of curving an inner top surface of the upper enlarged hole (1351).

The universal liquid container of claim 1, wherein each curvature portion (22) further comprises: two curvature seats (23) formed on two sides of the top hole (221), respectively disposed adjacent a small axis of the top hole (221) to face each other; and two slopes (231), respectively formed on two ends of each of the curvature seats (23); and

The universal liquid container of claim 1 or 2, wherein the adjacent edge (13) has a sealing sleeve (14) extending upwardly from the adjacent edge (13) and located along the adjacent edge (13) adjacent the adjacent surface. (132) such that the sealing sleeve (14) is formed as a rectangular annular shape; wherein the cap (21) has: four recesses (211) defined respectively in the four corners such that the four curvature portions (22) extend respectively from the four recesses (211); an inner cuff (212) extending downwardly from a bottom of the cap (21) and enclosing the bottom of the cap (21); and a sealing crack (213) defined between the inner sleeve (212) and an inner bottom surface of the cap (21) for tightly receiving the sealing sleeve (14).

The universal liquid container of claim 3, wherein each recess (211) has a center portion curved inward to form a curvature with the knob (42) on a corresponding curvature bolt (40).

The universal liquid container of claim 2, wherein each curvature seat (23) projects from a corresponding curvature portion (22) such that the slopes (231) of the curvature seat (23) are sloped from the curvature seat (23) toward the corresponding curvature portion (22).

The universal liquid container of claim 1 or 2, wherein each curvature portion (22) has a rounded enlarged top hole (2211) defined in a bottom of the top hole (221) and which is in communication with the top hole (221); and two auxiliary holes (2212), respectively defined through the curvature portion (22), disposed on two sides of the top hole (221) and connected to the magnifying top hole (2211); and wherein each of the at least one curvature bolt (40) has an elongated upper block (45) positioned adjacent the knob (42) disposed between the knob (42) and the center block (44) and having two ends extending radially from the shaft (41) in two opposite directions and having an olive-shaped shape to fit into the two auxiliary holes (2212) in the corresponding curvature portion (22) so that the upper block ( 45) has a main axis defined in the upper block (45) which imaginatively meets the main axis of the knob (42) at a 45 degree angle in the longitudinal direction of the shank (41) and which imaginatively meets the main axis of the center block (44) in a 45-degree angle in the longitudinal direction of the shaft (41) to form a curvature with an inner top surface of the enlarged top hole (2211).

The universal liquid container of claim 6, wherein each of the top holes (221) has a width and a length greater than the width and length of each of the upper holes (135); each of the auxiliary holes (2212) being tapered toward an outside end of the auxiliary hole (2212).

The universal liquid container of claim 6, wherein each inserted portion (131) has an elongated positioning hole (1352) defined through the inserted portion (131) which intersects and communicates with the upper hole (135) of the insert. the inserted portion (131), which is formed as an olive-shaped shape and has the same shape as the upper hole (135), so that the main axis of the positioning hole (1352) and the upper axis (135) of the upper hole (135) meet at a 45 degree angle.