Multifunctional water purification drawing shower head

Abstract

A multifunctional water purification drawing shower head comprises a shower head body, a mounting connector arranged in the center of the lower surface of the shower head body and a water inlet connector arranged in the mounting connector, the lower end of the water inlet connector protrudes downwards out of the mounting connector, and a water inlet body matched with the shower head body is arranged in the middle of the shower head body; a water purification joint is arranged at the center in the water inlet joint; a plurality of connecting wings which are circumferentially and uniformly distributed are arranged between the outer wall of the water purification joint and the inner wall of the water inlet joint; a plurality of second water through holes matched with the water inlet main body are formed in the upper end surface of the water purification joint and are communicated with the internal space of the water purification joint; a right water outlet connector is arranged on the right side of the water inlet body. The multifunctional water purification drawing shower head can spray blade water with high impact force and bubble water with a splash-proof effect according to actual requirements besides a common water outlet mode, and can spray purified water to meet the water use requirement.

Description

Technical Field

[0001] The utility model relates to a pull-out shower head, in particular to a multifunctional water-purifying pull-out shower head. Background Art

[0002] In order to facilitate the cleaning work and not be restricted by the water outlet angle during cleaning, a pull-out shower head is used. After the pull-out shower head is pulled out from the fixed pipe, the shower head of the pull-out shower head can be moved at will through the hose, so that the water outlet angle can be changed according to actual needs. Traditional water-outlet shower heads generally discharge water through a number of circular holes evenly distributed on the shower head. In the actual cleaning process, the requirements for water flow state are different for different cleaning situations. For example, when encountering some difficult-to-clean items, the water flow sprayed by the shower head needs to have extremely strong impact force, while at other times the water flow needs to have a certain impact force while avoiding splashing water. Traditional water-outlet shower heads only have a single water outlet mode and cannot meet actual needs at all.

[0003] As people's requirements for quality of life become higher and higher, clean water is needed to wash some items. In order to use clean water, a water purifier is generally installed on the pipes of the water supply system. However, the water purifier is large in size, takes up a lot of space, and is extremely troublesome to install. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a multifunctional water-purifying pull-out shower head, which, in addition to the ordinary water outlet mode, can also spray out blade water with high impact force and bubble water with splash-proof effect according to actual needs, and can also spray out purified water to meet water needs.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] The utility model discloses a multifunctional water-purifying pull-out shower head, comprising a shower head, a mounting interface arranged at the center of the lower surface of the shower head, and a water inlet joint arranged in the mounting interface, wherein the lower end of the water inlet joint protrudes downward to the outside of the mounting interface, a water inlet body matching therewith is arranged in the middle of the shower head; a water-purifying joint is arranged in the center of the water inlet joint; a plurality of connection wings evenly distributed in a circumference are arranged between the outer wall of the water-purifying joint and the inner wall of the water inlet joint; a plurality of second water-through holes matching the water inlet body are arranged on the upper end surface of the water-purifying joint The second water hole is connected with the internal space of the water purification joint; a right water outlet joint is provided on the right side of the water inlet body; a water switching device matching the right water outlet joint is provided in the right part of the shower head; a front clamping port connected with the internal space of the shower head is provided on the front side wall of the shower head; a water spraying plate matching with the front clamping port is provided in the front clamping port; a water passage cavity is provided in the water spraying plate; a plurality of water spraying holes connected with the water passage cavity are provided on the front side wall of the water spraying plate; the center of the rear side wall of the water spraying plate is connected with the water inlet body through a connector.

[0007] A first water inlet groove is provided on the upper surface of the water inlet main body; a second water inlet groove is provided on the upper surface of the water inlet joint; a third water inlet groove which is connected with the right water outlet joint is provided on the upper surface of the water inlet joint; a first water inlet hole which is connected with the first water inlet groove is provided on the lower surface of the water inlet main body; a plurality of second water inlet holes which are connected with the second water inlet groove are provided on the lower surface of the water inlet main body; a third water inlet hole which is connected with the third water inlet groove is provided on the lower surface of the water inlet main body; a cover plate which matches the upper surface of the water inlet main body is provided, and the cover plate shields and seals the upper notches of the first water inlet groove, the upper notches of the second water inlet groove and the upper notches of the third water inlet groove; the second water through hole is connected with the second water inlet groove through the second water inlet hole; a water outlet head located in the connecting head is provided on the front side wall of the water inlet main body, and the first water inlet groove is connected with the water through cavity through the water outlet head.

[0008] The inner wall of the water inlet joint, the outer wall of the water purification joint and a number of circumferentially evenly distributed connecting wings enclose a number of circumferentially evenly distributed first water holes; the outer wall of the upper end of the water purification joint is provided with an outer annular step; the inner wall of the upper end of the water inlet joint is provided with an inner annular step, and the inner annular step and the outer annular step are coplanar; an annular sealing gasket is provided between the outer wall of the upper end of the water purification joint and the inner wall of the upper end of the water inlet joint, and the lower surface of the sealing gasket is in contact with the inner annular step and the outer annular step; the sealing gasket is provided with a first water diversion hole and a second water diversion hole matching the first water inlet hole, the first water diversion hole and the second water diversion hole are evenly distributed circumferentially, and the first water diversion hole and the second water diversion hole are both arc-shaped oblong holes; the upper surface of the sealing gasket shields and seals the lower end opening of the second water diversion hole; the inner wall of the sealing gasket is provided with a number of circumferentially evenly distributed positioning protrusions; the upper outer wall of the water purification joint is provided with a number of positioning grooves matching the positioning protrusions.

[0009] A circular guide portion is provided at the lower end of the water inlet body; a limiting portion is provided on one side of the guide portion; a C-shaped rotating portion is provided on the upper end surface of the water inlet joint, and the inner wall of the rotating portion is in contact with the outer wall of the guide portion; the limiting portion is located in the notch formed by the rotating portion itself; the first water inlet hole and the third water inlet hole are distributed on the left and right sides of the lower surface of the guide portion.

[0010] A left water outlet joint communicating with the second water inlet groove is provided on the left side of the water inlet body; a water purification control device matching the left water outlet joint is provided in the left part of the shower head; a water purification hole communicating with the internal space of the shower head is provided on the left side wall of the water spray plate; a water purification nozzle matching the water purification control device is provided in the water purification hole; the water purification control device comprises a water purification seat provided in the left part of the shower head; a left quick-connect joint matching the left water outlet joint is provided on the right end of the water purification seat; a left sealing hole is provided on the upper surface of the water purification seat; a third water hole communicating with the left quick-connect joint is provided on the right side wall of the lower part of the left sealing hole; a docking hole matching the water purification nozzle is provided on the left side of the front side wall of the water purification seat head; a fourth water-through hole communicating with the docking joint is provided on the left inner wall of the upper part of the left sealing hole; a left sealing seat matching the left sealing hole is provided in the left sealing hole; a left opening and closing hole is provided in the center of the left sealing seat; a plurality of left water delivery holes communicating with the left opening and closing hole are provided on the outer wall of the left sealing seat, and the left opening and closing hole is communicated with the fourth water-through hole through the left water delivery hole; an automatic telescopic locking mechanism matching the left opening and closing hole is provided in the left opening and closing hole; a left spring is provided between the lower end of the automatic telescopic locking mechanism and the bottom of the left sealing hole; a left pressing port communicating with the internal space of the shower head is provided on the upper surface of the left part of the shower head; a water purification button matching the upper end of the automatic telescopic locking mechanism is provided in the left pressing port.

[0011] The water switching device includes a switching seat arranged in the right part of the shower head; a right quick connector matching the right water outlet connector is arranged on the left side of the switching seat; a right sealing hole is arranged in the center of the upper surface of the switching seat; an elastic cavity coaxial with the right sealing hole is arranged in the lower part of the switching seat; a connecting hole communicating with the elastic cavity is arranged in the center of the bottom of the right sealing hole; a lower sealing cone surface which is wide at the top and narrow at the bottom is arranged at the upper end of the connecting hole; a fifth water-through hole communicating with the right quick connector is arranged on the inner wall on the left side of the lower part of the right sealing hole; a bubbler mounting head and an adapter are arranged on the right side wall of the right sealing hole; the bubbler mounting head is coaxial with the adapter, and the bubbler mounting head encloses the adapter; a sixth water-through hole communicating with the adapter is arranged on the inner wall on the right side of the middle part of the right sealing hole; the outer wall of the adapter The gap between the shower head and the inner wall of the bubbler mounting head is connected through the seventh water-through hole and the elastic cavity; an opening connected with the internal space is provided at the center of the right end face of the shower head; a positioning piece matching the right end of the bubbler mounting head is provided in the opening; a bubbler matching with it is provided in the right end port of the bubbler mounting head; a center hole is provided in the center of the bubbler; a blade water outlet structure matching with the center hole is provided at the right end port of the adapter; a right sealing seat matching with it is provided in the right sealing hole; a right opening and closing hole axially penetrating through the right sealing seat is provided in the center; a plurality of right water delivery holes corresponding to the positions of the sixth water-through hole are provided on the outer wall of the right sealing seat, and the right opening and closing hole is connected with the sixth water-through hole through the right water delivery hole; an automatic sealing structure matching with it is provided in the right opening and closing hole.

[0012] The automatic sealing structure comprises a switching rod arranged in the right opening and closing hole; a limiting ring is arranged on the inner wall of the upper end opening of the right opening and closing hole; the upper end of the switching rod passes upward through the inner hole of the limiting ring; a truncated cone is arranged on the outer wall of the switching rod; an annular sealing groove is arranged on the outer wall of the truncated cone; a sealing ring matching with it is arranged in the sealing groove, and the outer edge of the sealing ring protrudes outward to the outside of the sealing groove; an upper sealing cone surface which is narrow at the top and wide at the bottom is arranged on the lower end opening of the right opening and closing hole, and the outer edge of the upper surface of the sealing ring is in contact with the upper sealing cone surface; the inner wall of the lower side of the elastic cavity is provided with a sealing ring which is narrow at the top and wide at the bottom ... A guide rod is provided at the center; a guide hole coaxial with the guide rod is provided at the center of the lower end surface of the switching rod, and the upper end of the guide rod is inserted into the guide hole upward; a right spring is provided outside the guide rod between the lower end surface of the switching rod and the lower inner wall of the elastic cavity; a right pressing port communicating with the internal space is provided on the upper surface of the right part of the shower head; a switching button is provided in the right pressing port; an articulated seat is provided on the upper surface of the bubbler mounting head; the right end of the switching button is hinged on the articulated seat; the upper end of the switching rod is pressed against the upper inner wall of the left part of the switching button.

[0013] The blade water outlet structure includes a blade water outlet seat arranged at the right end port of the adapter; a water inlet hole communicating with the adapter is arranged at the center of the left end surface of the blade water outlet seat; a square blade hole is arranged at the center of the right end surface of the blade water outlet seat, and the blade hole communicates with the water inlet hole through an elliptical hole; the width of the blade hole gradually decreases toward the elliptical hole.

[0014] The inner wall of the opening is provided with an annular positioning step, and the outer edge of the left side wall of the positioning member is in contact with the positioning step; the positioning member is annular, and the right end of the bubbler is located in the inner hole of the positioning member; the right end face of the bubbler mounting head is in contact with the inner edge of the left side wall of the positioning member; the left side wall of the positioning member is provided with a plurality of positioning ribs enclosing the right end of the bubbler mounting head; the left side wall of the positioning member is provided with a plurality of elastic arms evenly distributed around the circumference, and the elastic arms are adjacent to the positioning ribs; an annular clamping groove is provided on the right part of the bubbler mounting head; and a clamping hook matching the clamping groove is provided on the right end of the elastic arm.

[0015] A movable hole is provided at the center of the upper end face of the water purification connector; a square hole coaxial with the movable hole is provided on the lower surface of the water inlet body; a positioning step is provided at the edge of the hole opening at the lower end of the movable hole; a fixed shaft matching therewith is provided in the movable hole; a square head matching the square hole is provided at the center of the upper end face of the fixed shaft; a positioning portion fitting with the positioning step is provided at the lower end of the fixed shaft; a through hole is provided at the center of the lower surface of the fixed shaft, and the hole opening at the upper end of the through hole is located on the upper surface of the square head; a screw hole communicating with the through hole is provided at the bottom of the square hole.

[0016] The beneficial effects of the utility model are:

[0017] Compared with the prior art, the multifunctional water-purifying pull-out shower head adopting the structure of the utility model can directly deliver purified water through the purified water joint, and can directly deliver ordinary water through the gap between the inner wall of the water inlet joint and the outer wall of the purified water joint, and the opening and closing of purified water can be controlled by the purified water control device. When the purified water control device is turned on, purified water can be sprayed to the outside through the purified water nozzle. There is no need to install an external purified water device on the water delivery system, which reduces a lot of trouble. At the same time, ordinary water can be converted into blade water with impact or bubble water with splash-proof effect to meet the different water needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of a multifunctional water-purifying pull-out shower head of the utility model at one angle;

[0019] Figure 2 yes Figure 1 An enlarged view of part A;

[0020] Figure 3 yes Figure 1 An enlarged view of part B;

[0021] Figure 4 yes Figure 1 An enlarged view of the C portion;

[0022] Figure 5 This is a cross-sectional view of the multifunctional water-purifying pull-out shower head of the utility model from another angle;

[0023] Figure 6 This is a schematic diagram of the structure of the utility model multifunctional water-purifying pull-out shower head after removing the shower head;

[0024] Figure 7 It is a structural diagram of the water inlet body from one angle;

[0025] Figure 8 This is a structural diagram of the water inlet body from another angle;

[0026] Fig. 9 This is a schematic diagram of the structure of the first angle of the switching seat;

[0027] Fig.10 This is a structural diagram of the switching seat from the second angle;

[0028] Fig.11 This is a structural diagram of the switching seat from the third angle;

[0029] Fig.12 This is a structural diagram of the water purification seat from an angle;

[0030] Fig.13 This is a structural diagram of the water purification seat from another angle;

[0031] Fig.14 It is a structural diagram of the water inlet joint and the sealing gasket when assembled;

[0032] Fig.15 It is a structural schematic diagram of the positioning member;

[0033] Fig.16 It is a structural schematic diagram of a multifunctional water-purifying pull-out shower head of the utility model. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0035] See also Figures 1 to 16 The utility model provides a multifunctional water-purifying pull-out shower, comprising a shower head 1, a mounting interface 2 arranged at the center of the lower surface of the shower head 1, and a water inlet joint 3 arranged in the mounting interface 2, wherein the lower end of the water inlet joint 3 protrudes downward to the outside of the mounting interface 2, and a water inlet body 4 matching therewith is arranged in the middle of the shower head 1; a water-purifying joint 5 is arranged in the center of the water inlet joint 3; a plurality of connecting wings 6 evenly distributed in a circumference are arranged between the outer wall of the water-purifying joint 5 and the inner wall of the water inlet joint 3; a plurality of second water-through holes 7 matching the water inlet body 4 are arranged on the upper end surface of the water-purifying joint 5, and the second water-through holes 7 matching the water inlet body 4 are arranged on the upper end surface of the water-purifying joint 5. The hole 7 is connected with the inner space of the water purification joint 5; a right water outlet joint 8 is provided on the right side of the water inlet body 4; a water switching device matching the right water outlet joint 8 is provided in the right part of the shower head 1; a front clamping opening 10 connected with the inner space thereof is provided on the front side wall of the shower head 1; a water spraying plate 11 matching therewith is provided in the front clamping opening 10; a water passage cavity 12 is provided in the water spraying plate 11; a plurality of water spraying holes 13 connected with the water passage cavity 12 are provided on the front side wall of the water spraying plate 11; the center of the rear side wall of the water spraying plate 11 is connected with the water inlet body 4 through a connector 14.

[0036] The upper surface of the water inlet body 4 is provided with a first water inlet groove 15; the upper surface of the water inlet joint is provided with a second water inlet groove 16; the upper surface of the water inlet joint 3 is provided with a third water inlet groove 17 which is connected with the right water outlet joint 8; the lower surface of the water inlet body 4 is provided with a first water inlet hole 18 which is connected with the first water inlet groove 15; the lower surface of the water inlet body 4 is provided with a plurality of second water inlet holes 19 which are connected with the second water inlet groove 16; the lower surface of the water inlet body 4 is provided with a plurality of second water inlet holes 19 which are connected with the third water inlet groove 17. a third water inlet hole 20; a cover plate 21 matching with it is provided on the upper surface of the water inlet body 4, and the cover plate 21 shields and seals the upper notches of the first water inlet groove 15, the upper notches of the second water inlet groove 16 and the upper notches of the third water inlet groove 17; the second water hole 7 is connected with the second water inlet groove 16 through the second water inlet hole 19; a water outlet head 22 located in the connecting head 14 is provided on the front side wall of the water inlet body 4, and the first water inlet groove 15 is connected with the water cavity 12 through the water outlet head 22.

[0037] The inner wall of the water inlet joint 3, the outer wall of the water purification joint 5 and a plurality of circumferentially evenly distributed connecting wings 6 enclose a plurality of circumferentially evenly distributed first water holes 23; the outer wall of the upper end of the water purification joint is provided with an outer annular step 24; the inner wall of the upper end of the water inlet joint is provided with an inner annular step 25, and the inner annular step 25 is coplanar with the outer annular step 24; an annular sealing gasket 26 is provided between the outer wall of the upper end of the water purification joint 5 and the inner wall of the upper end of the water inlet joint 3, and the lower surface of the sealing gasket 26 is aligned with the inner annular step 25 and the outer annular step 24. The sealing gasket 26 is provided with a first water inlet hole 27 and a second water inlet hole 28 which match the first water inlet hole 18, and the first water inlet hole 27 and the second water inlet hole 28 are evenly distributed around the circumference, and both the first water inlet hole 27 and the second water inlet hole 28 are arc-shaped oblong holes; the upper surface of the sealing gasket 26 shields and seals the lower end opening of the second water inlet hole 28; the inner wall of the sealing gasket 26 is provided with a plurality of positioning protrusions 30 which are evenly distributed around the circumference; the upper outer wall of the water purification joint 5 is provided with a plurality of positioning grooves 31 which match the positioning protrusions 30.

[0038] A circular guide portion 32 is provided at the lower end of the water inlet body 4; a limiting portion 33 is provided on one side of the guide portion 32; a C-shaped rotating portion 34 is provided on the upper end surface of the water inlet joint 3, and the inner wall of the rotating portion 34 is in contact with the outer wall of the guide portion 32; the limiting portion 33 is located in the notch 35 formed by the rotating portion 34 itself; the first water inlet hole 18 and the third water inlet hole 20 are distributed on the left and right sides of the lower surface of the guide portion 32.

[0039] A left water outlet joint 36 interpenetrating with the second water inlet groove 16 is provided on the left side of the water inlet body 4; a water purification control device matching with the left water outlet joint 36 is provided in the left part of the shower head 1; a water purification hole 37 interpenetrating with the internal space of the shower head 1 is provided on the left side wall of the water spray plate 11; a water purification nozzle 38 matching with the water purification control device is provided in the water purification hole 37; the water purification control device comprises a water purification seat 901 arranged in the left part of the shower head 1; a left quick-connect joint 902 matching with the left water outlet joint 36 is provided at the right end of the water purification seat 901; a left sealing hole 903 is provided on the upper surface of the water purification seat 901; a third water hole 904 interpenetrating with the left quick-connect joint 902 is provided on the right side wall of the lower part of the left sealing hole 903; a docking joint 905 matching with the water purification nozzle 38 is provided on the left side of the front side wall of the water purification seat 901; A fourth water-through hole 906 intersecting with the docking joint 905 is provided on the left inner wall of the upper part of the left sealing hole 903; a left sealing seat 907 matching therewith is provided in the left sealing hole 903; a left opening and closing hole 908 is provided at the center of the left sealing seat 907; a plurality of left water delivery holes 909 intersecting with the left opening and closing hole 908 are provided on the outer wall of the left sealing seat 907, and the left opening and closing hole 908 is intersected with the fourth water-through hole 906 through the left water delivery holes 909; an automatic telescopic locking mechanism matching therewith is provided in the left opening and closing hole 908; a left spring 910 is provided between the lower end of the automatic telescopic locking mechanism and the bottom of the left sealing hole 903; a left pressing port 911 intersecting with the internal space of the shower head 1 is provided on the upper surface of the left part of the shower head 1; a water purification button 912 matching with the upper end of the automatic telescopic locking mechanism is provided in the left pressing port 911.

[0040] The water switching device includes a switching seat 39 arranged in the right part of the shower head 1; a right quick connector 40 matching the right water outlet connector 8 is arranged on the left side of the switching seat 39; a right sealing hole 41 is arranged at the center of the upper surface of the switching seat 39; an elastic cavity 42 coaxial with the right sealing hole 41 is arranged in the lower part of the switching seat 39; a connecting hole 43 communicating with the elastic cavity 42 is arranged at the center of the bottom of the right sealing hole 41; a lower sealing cone 44 which is wide at the top and narrow at the bottom is arranged at the upper end of the connecting hole 43; a fifth water-through hole 45 communicating with the right quick connector 40 is arranged on the inner wall of the left side of the lower part of the right sealing hole 41; a bubbler mounting head 46 and an adapter 47 are arranged on the right side wall of the right sealing hole 41; the bubbler mounting head 46 is coaxial with the adapter 47, and the bubbler mounting head 46 encloses the adapter 47; a sixth water-through hole 48 communicating with the adapter 47 is arranged on the inner wall of the right side of the middle part of the right sealing hole 41; The gap between the outer wall of the shower head 1 and the inner wall of the bubbler mounting head 46 is connected through the seventh water-through hole 49 and the elastic cavity 42; an opening 50 connected to the inner space thereof is provided at the center of the right end face of the shower head 1; a positioning member 51 matching the right end of the bubbler mounting head 46 is provided in the opening 50; a bubbler 52 matching therewith is provided in the right end port of the bubbler mounting head 46; a center hole 53 is provided in the center of the bubbler 52; a blade water outlet structure matching the center hole 53 is provided at the right end port of the adapter 47; a right sealing seat 54 matching therewith is provided in the right sealing hole 41; a right opening and closing hole 55 axially penetrating therethrough is provided in the center of the right sealing seat 54; a plurality of right water delivery holes 56 corresponding to the positions of the sixth water-through hole 48 are provided on the outer wall of the right sealing seat 54, and the right opening and closing hole 55 is connected to the sixth water-through hole 48 through the right water delivery hole 56; an automatic sealing structure matching therewith is provided in the right opening and closing hole 55.

[0041] The automatic sealing structure includes a switching rod 57 arranged in the right opening and closing hole 55; a limiting ring 58 is arranged on the inner wall of the upper end of the opening of the right opening and closing hole 55; the upper end of the switching rod 57 passes upward through the inner hole of the limiting ring 58; a round table 59 is arranged on the outer wall of the switching rod 57; an annular sealing groove 60 is arranged on the outer wall of the round table 59; a sealing ring 61 matching with it is arranged in the sealing groove 60, and the outer edge of the sealing ring 61 protrudes outward to the outside of the sealing groove 60; an upper sealing cone 62 which is narrow at the top and wide at the bottom is arranged on the lower end of the opening of the right opening and closing hole 55, and the outer edge of the upper surface of the sealing ring 61 is in contact with the upper sealing cone 62; the inner wall of the lower side of the elastic cavity 42 is provided with a sealing ring 61 which is matched with the sealing ring 61. A guide rod 63 is provided at the center of the switch rod 57; a guide hole 64 coaxial with the guide rod 63 is provided at the center of the lower end surface of the switch rod 57, and the upper end of the guide rod 63 is inserted into the guide hole 64 upward; a right spring 65 is provided between the lower end surface of the switch rod 57 and the lower inner wall of the elastic cavity 42 and is set outside the guide rod 63; a right pressing port 66 communicating with the internal space thereof is provided on the upper surface of the right part of the shower head 1; a switch button 67 is provided in the right pressing port 66; a hinge seat 68 is provided on the upper surface of the bubbler mounting head 46; the right end of the switch button 67 is hinged on the hinge seat 68; the upper end of the switch rod 57 presses against the upper inner wall of the left part of the switch button 67.

[0042] The blade water outlet structure includes a blade water outlet seat 69 arranged at the right end port of the adapter 47; a water inlet hole 70 communicating with the adapter 47 is provided at the center of the left end surface of the blade water outlet seat 69; a square blade hole 71 is provided at the center of the right end surface of the blade water outlet seat 69, and the blade hole 71 is communicated with the water inlet hole 70 through an elliptical hole 72; the width of the blade hole 71 gradually decreases toward the elliptical hole 72.

[0043] The inner wall of the opening 50 is provided with an annular positioning step 73, and the outer edge of the left side wall of the positioning member 51 is in contact with the positioning step 73; the positioning member 51 is annular, and the right end of the bubbler 52 is located in the inner hole of the positioning member 51; the right end face of the bubbler mounting head 46 is in contact with the inner edge of the left side wall of the positioning member 51; the left side wall of the positioning member 51 is provided with a plurality of positioning ribs 74 that enclose the right end of the bubbler mounting head 46; the left side wall of the positioning member 51 is provided with a plurality of elastic arms 75 that are evenly distributed around the circumference, and the elastic arms 75 are adjacent to the positioning ribs 74; the right part of the bubbler mounting head 46 is provided with an annular clamping groove 76; the right end of the elastic arm 75 is provided with a clamping hook 77 that matches the clamping groove 76.

[0044] A movable hole 78 is provided at the center of the upper end face of the water purification connector 5; a square hole 79 coaxial with the movable hole 78 is provided on the lower surface of the water inlet body 4; a locking step 80 is provided at the edge of the lower end hole opening of the movable hole 78; a fixed shaft 81 matching therewith is provided in the movable hole 78; a square head 82 matching the square hole 79 is provided at the center of the upper end face of the fixed shaft 81; a locking portion 83 fitting with the locking step 80 is provided at the lower end of the fixed shaft 81; a through hole 84 is provided at the center of the lower surface of the fixed shaft 81, and the upper end hole opening of the through hole 84 is located on the upper surface of the square head 82; a screw hole 85 communicating with the through hole 84 is provided at the bottom of the square hole 79.

[0045] The method of using the utility model is as follows:

[0046] When connecting the hose 86 to the water inlet connector 3, a hose 86 with an independent clean water path 87 inside is required, so that after the hose 86 is connected to the water inlet connector 3, the clean water in the clean water path 87 flows directly into the clean water connector 5, and the ordinary water between the outer wall of the clean water path 87 and the inner wall of the hose 86 flows directly into the gap between the outer wall of the clean water connector 5 and the inner wall of the water inlet connector 3.

[0047] When ordinary water enters the gap between the outer wall of the water purification joint 5 and the inner wall of the water inlet joint 3, the first water inlet hole 18 is connected with the first water hole 23 through the first water diversion hole 27, and the ordinary water will enter the first water inlet groove 15 through the first water hole 23, the first water diversion hole 27, and the first water inlet hole 18 in sequence, and the first water inlet groove 15 is connected with the connecting head 14 through the water outlet head 22. After entering the first water inlet groove 15, the ordinary water will enter the connecting head 14 through the water outlet head 22, and then flow into the water passage cavity 12 of the water spray plate 11, and finally be sprayed out to the outside from a number of evenly distributed water spray holes 13, forming multiple linear water flows for use.

[0048] Since the clean water path 87 in the hose 86 is directly connected to the clean water connector 5, the clean water in the clean water path 87 will flow into the second water inlet groove 16 through the internal space of the clean water connector 5, the second water through hole 7, and the second water inlet hole 19 in sequence, and the second water inlet groove 16 is connected to the left water outlet connector 36. When the clean water flows into the second water inlet groove 16, it will first flow into the left quick-connect connector 902 through the left water outlet connector 36, and then flow into the lower part of the left sealing hole 903 through the third water through hole 904. At this moment, the lower end of the left opening and closing hole 908 is blocked and sealed by the automatic telescopic locking mechanism, and the clean water The water will be restricted in the lower part of the left sealing hole 903 and cannot continue to flow. If the left opening and closing hole 908 is to be opened, the state of the automatic telescopic locking mechanism can be changed by pressing the water purification button 912 downward, so that the automatic telescopic locking mechanism no longer blocks and seals the lower end opening of the left opening and closing hole 908. At this time, the clean water in the lower part of the left sealing hole 903 can flow into the left opening and closing hole 908 through the lower end opening of the left opening and closing hole 908, and then flow into the docking joint 905 through the left water transfer hole 909 and the fourth water through hole 906 in turn, and finally be sprayed out from the water purification nozzle 38 for use, thereby meeting the user's demand for purified water.

[0049] The automatic telescopic locking mechanism mentioned above is actually an existing mechanism, that is, the automatic telescopic locking mechanism commonly used in push-type ballpoint pens. This automatic telescopic locking mechanism is mainly composed of three parts, namely a pressure rod 913, a sleeve and a push rod 914. The sleeve is equivalent to the left sealing seat 907 with a left opening and closing hole 908, and the upper end of the pressure rod 913 is directly connected to the upper inner wall of the water purification button 912. When the water purification button 912 is pressed downward, the pressure rod 913 is pressed downward accordingly. At this time, the pressure rod 913 will press the push rod 914 downward, and the left The spring 910 is arranged between the lower end surface of the push rod 914 and the bottom of the left sealing hole 903, and the lower end of the pressure rod 913 is provided with a plurality of triangular heads 915 evenly distributed in a circle, and the upper end of the push rod 914 is provided with a plurality of inclined platforms 916 evenly distributed in a circle, and the number of inclined platforms 916 is half of the number of triangular heads 915. At the same time, a plurality of guide grooves matching the triangular heads 915 are provided in the left opening and closing hole 908, so that when the pressure rod 913 presses the push rod down, it cooperates with the elasticity of the left spring 910 to realize the automatic fixation of the push rod 914 after it moves down, and then the pressure rod 913 is pressed down. By pressing the pressure rod 913 downward through the water purification button 912, the push rod 914 can be moved upward and reset, and then a sealing member 920 can be set at the lower end of the push rod 914. In order to ensure the stability of the left spring 910 when it is compressed and opened, a groove 917 can be set at the center of the lower end surface of the sealing member 920, and the upper end of the left spring 910 is clamped in the groove 917, and an annular auxiliary groove 918 can be set on the outer wall of the lower part of the sealing member 920, and a rubber ring 919 matching it can be set in the auxiliary groove 918, and the outer diameter of the rubber ring 919 is larger than the auxiliary groove 918. The outer diameter of the auxiliary groove 918 can utilize the fit between the upper surface of the outer edge of the rubber ring 919 and the lower surface of the left sealing seat 907 to block and seal the lower end of the left opening and closing hole 908. When the push rod 914 moves downward under the pressure of the pressure rod 913, the rubber ring 919 is no longer tightly attached to the lower surface of the left sealing seat 907, and the lower end of the left opening and closing hole 908 is opened, so that the clean water in the lower part of the left sealing hole 903 flows into the docking joint 905 through the left opening and closing hole 908, the left water supply hole 909, and the fourth water hole 906 in turn, and is finally sprayed out from the clean water nozzle 38.

[0050] If it is found in actual use that the multiple linear water flows sprayed through the water spray hole 13 cannot meet the needs, the water outlet mode can be changed. When the water outlet mode needs to be changed, the water inlet connector 3 can be rotated. The outer wall of the water inlet connector 3 is provided with a plurality of annular grooves 88 evenly distributed in the axial direction, and an O-ring 89 matching it is provided in the annular groove 88. The outer circumference of the O-ring 89 directly fits the inner wall of the mounting interface 2, so as to utilize the friction between the outer circumference of the O-ring 89 and the inner wall of the mounting interface 2 to ensure the stability of the water inlet connector 3 when it is installed in the mounting interface 2, thereby ensuring that the water inlet connector 3 can rotate in the mounting interface 2 and At the same time, in order to prevent the water inlet connector 3 from being detached from the mounting interface 2 due to water pressure, a screw can be passed through the through hole 84 of the fixed shaft 81 in sequence and screwed into the screw hole 85 at the center of the bottom of the square hole 79. At this time, the connection between the water purification connector 5 and the water inlet body 4 can be achieved, further ensuring the stability of the water inlet connector 3. The movable hole 78 is cylindrical, and the water purification connector 5 can rotate around the fixed shaft 81. In order to facilitate rotation, the water inlet connector 3 can be held still, and then the shower head 1 is rotated to realize the rotation of the mounting interface 2. This rotation method is equivalent to the water inlet connector 3 rotating in the mounting interface 2.

[0051] When the user holds the part of the water inlet connector 3 protruding from the mounting interface 2, he can hold the right end of the shower head 1 to rotate the shower head 1 90 degrees clockwise. Since the limiting portion 33 is located in the notch 35 formed by the rotating portion 34 itself, when the shower head 1 rotates 90 degrees, the inner wall of one side of the notch 35 just touches the limiting portion 33, thereby reminding the user that the rotation has been completed. The inner wall of the sealing gasket 26 is provided with a plurality of positioning protrusions 30 evenly distributed around the circumference, and the upper outer wall of the water purification connector 5 is provided with a plurality of positioning grooves 31 matching the positioning protrusions 30, so that the sealing gasket 26 It is fixed with the water purification joint 5, and as the shower head 1 rotates 90 degrees, the water inlet body 4 rotates synchronously, the positions of the first water inlet hole 18 and the first water diversion hole 27 are staggered, the upper end opening of the first water diversion hole 27 is shielded and sealed by the lower surface of the water inlet body 4, and the third water inlet hole 20 rotates to a position intersecting with the second water diversion hole 28. At this time, ordinary water in the first water hole 23 cannot enter the first water inlet groove 15 through the first water diversion hole 27, and ordinary water in the first water hole 23 can enter the third water inlet groove 17 through the second water diversion hole 28 and the third water inlet hole 20 in sequence.

[0052] When ordinary water enters the third water inlet groove 17, it will enter the right quick joint 40 through the right water outlet joint 8, and then enter the lower part of the right sealing hole 41 through the fifth water through hole 45. Since the sealing ring 61 is in contact with the upper sealing cone 62 at this time, the lower end of the right opening and closing hole 55 is blocked and sealed by the sealing ring 61. The ordinary water entering the lower part of the right sealing hole 41 can only enter the elastic cavity 42 through the connecting hole 43, and then flow into the gap between the inner wall of the bubbler mounting head 46 and the outer wall of the adapter 47, and finally flow into the bubbler 52. The bubbler 52 is an existing bubbler that can fully mix the water and air flowing through it. With the addition of air, not only the flushing force of the water can be improved, but also the water flow is soft and comfortable like mist, which effectively avoids the water flow from splashing everywhere and plays a splash-proof effect. As the ordinary water flows through the bubbler, the water flow sprayed from the bubbler will eventually turn into soft bubble water for use.

[0053] If the sparkling water cannot meet the current needs and a more impactful blade water is needed, the upper surface of the left part of the switch button 67 can be pressed downward. Since the lower right part of the switch button 67 is hinged on the hinge seat 68, when the left part of the switch button 67 is pressed downward, the switch button 67 will swing downward with its own hinge point as the center. When the left part of the switch button 67 swings downward, it will squeeze the switch rod 57 downward, and the switch rod 57 will move downward accordingly. A spring is set between the lower end surface of the switch rod 57 and the lower inner wall of the elastic cavity 42. There is a right spring 65 set outside the guide rod 63. As the switch rod 57 moves downward, the right spring 65 is compressed and generates elasticity, and the upper end of the guide rod 63 continues to penetrate the guide hole 64. At the same time, the switch rod 57 drives the round table 59 to move downward. When the round table 59 moves downward, the sealing ring 61 moves downward accordingly, and the sealing ring 61 no longer fits with the upper sealing cone surface 62. At this time, the lower end of the right opening and closing hole 55 is in an open state. As the sealing ring 61 continues to move downward, the outer edge of the lower surface of the sealing ring 61 finally fits with the lower sealing cone surface 62. The sealing cone surface 44 is in contact with each other, and the connecting hole 43 is blocked and sealed by the sealing ring 61. The ordinary water entering the right sealing hole 41 cannot enter the elastic cavity 42 through the connecting hole 43. At this time, the ordinary water in the right sealing hole 41 can only enter the right opening and closing hole 55 through the lower end opening of the right opening and closing hole 55, and then enter the adapter 47 through the right water delivery hole 56 and the sixth water through hole 48 in sequence. The adapter 47 is connected with the water inlet hole 70 on the left end face of the blade water outlet seat 69, and the ordinary water will directly enter the blade water outlet seat 69. The water enters the water hole 70 and enters the square hole 79 through the elliptical hole 72, and finally sprays out from the square hole 79 to the outside to form a blade-shaped water flow. Since the width of the square hole 798 gradually decreases toward the elliptical hole 72, when ordinary water enters the square hole 79 through the elliptical hole 72, the ordinary water will spray out along the inner wall of the square hole 79, thereby forming a square water flow, like a blade. This water flow is shaped like a blade and is concentrated, so it can form a strong impact force, effectively ensuring the cleaning effect of the water flow.

[0054] From the above, it can be known that the utility model can directly deliver clean water through the clean water connector 5, and can directly deliver ordinary water through the gap between the inner wall of the water inlet connector 3 and the outer wall of the clean water connector, and the opening and closing of the clean water can be controlled by the clean water control device. When the clean water control device is turned on, the clean water can be sprayed to the outside through the clean water nozzle 38. There is no need to install an external water purification device on the water delivery system, which reduces a lot of trouble. At the same time, ordinary water can be converted into blade water with impact or bubble water with splash-proof effect to meet the different water needs of users.

[0055] An annular positioning step 73 is provided on the inner wall of the opening 50, and the outer edge of the left side wall of the positioning member 51 is fitted with the positioning step 73. The positioning member 51 is annular, and the right end of the bubbler 52 is located in the inner hole of the positioning member 51. The right end face of the bubbler mounting head 46 is fitted with the inner edge of the left side wall of the positioning member 51, and the left side wall of the positioning member 51 is provided with a plurality of positioning ribs 74 that enclose the right end of the bubbler mounting head 46. The left side wall of the positioning member is provided with a plurality of elastic arms 75 that are evenly distributed around the circumference, and the elastic arms 75 are adjacent to the positioning ribs 74. An annular card groove 76 is provided on the right part of the bubbler mounting head 46, and a card hook 77 matching the card groove 76 is provided on the right end of the elastic arm 75. This fixing method can effectively ensure the stability of the bubbler mounting head 46, thereby ensuring the stability when using bubble water or blade water.

[0056] A through hole 84 is provided at the center of the lower surface of the fixed shaft 81, and the upper end opening of the through hole 84 is located on the upper surface of the square head 82. A screw hole 85 that is connected with the through hole 84 is provided at the bottom of the square hole 79. The fixed shaft 81 can be fixed by simply passing the screw through the through hole 84 and screwing it into the screw hole 85, and at the same time pressing the head of the screw on the lower end surface of the fixed shaft 81.

Claims

1. A multifunctional water-purifying pull-out shower head, comprising a shower head, a mounting interface provided at the center of the lower surface of the shower head, and a water inlet joint provided in the mounting interface, wherein the lower end of the water inlet joint protrudes downwardly out of the mounting interface, and is characterized in that: A water inlet body matching with it is arranged in the middle of the shower head; a water purification joint is arranged in the center of the water inlet joint; a plurality of connecting wings evenly distributed in a circle are arranged between the outer wall of the water purification joint and the inner wall of the water inlet joint; a plurality of second water holes matching with the water inlet body are arranged on the upper end surface of the water purification joint, and the second water holes are connected with the internal space of the water purification joint; a right water outlet joint is arranged on the right side of the water inlet body; a water switching device matching with the right water outlet joint is arranged in the right part of the shower head; a front clamping port connected with the internal space of the shower head is arranged on the front side wall of the shower head; a water spray plate matching with it is arranged in the front clamping port; a water passage cavity is arranged in the water spray plate; a plurality of water spray holes connected with the water passage cavity are arranged on the front side wall of the water spray plate; the center of the rear side wall of the water spray plate is connected with the water inlet body through a connecting head.

2. A multifunctional water-purifying pull-out shower head according to claim 1, characterized in that: A first water inlet groove is provided on the upper surface of the water inlet main body; a second water inlet groove is provided on the upper surface of the water inlet joint; a third water inlet groove which is connected with the right water outlet joint is provided on the upper surface of the water inlet joint; a first water inlet hole which is connected with the first water inlet groove is provided on the lower surface of the water inlet main body; a plurality of second water inlet holes which are connected with the second water inlet groove are provided on the lower surface of the water inlet main body; a third water inlet hole which is connected with the third water inlet groove is provided on the lower surface of the water inlet main body; a cover plate which matches the upper surface of the water inlet main body is provided, and the cover plate shields and seals the upper notches of the first water inlet groove, the upper notches of the second water inlet groove and the upper notches of the third water inlet groove; the second water through hole is connected with the second water inlet groove through the second water inlet hole; a water outlet head located in the connecting head is provided on the front side wall of the water inlet main body, and the first water inlet groove is connected with the water through cavity through the water outlet head.

3. A multifunctional water-purifying pull-out shower head according to claim 2, characterized in that: The inner wall of the water inlet joint, the outer wall of the water purification joint and a number of circumferentially evenly distributed connecting wings enclose a number of circumferentially evenly distributed first water holes; the outer wall of the upper end of the water purification joint is provided with an outer annular step; the inner wall of the upper end of the water inlet joint is provided with an inner annular step, and the inner annular step and the outer annular step are coplanar; an annular sealing gasket is provided between the outer wall of the upper end of the water purification joint and the inner wall of the upper end of the water inlet joint, and the lower surface of the sealing gasket is in contact with the inner annular step and the outer annular step; the sealing gasket is provided with a first water diversion hole and a second water diversion hole matching the first water inlet hole, the first water diversion hole and the second water diversion hole are evenly distributed circumferentially, and the first water diversion hole and the second water diversion hole are both arc-shaped oblong holes; the upper surface of the sealing gasket shields and seals the lower end opening of the second water diversion hole; the inner wall of the sealing gasket is provided with a number of circumferentially evenly distributed positioning protrusions; the upper outer wall of the water purification joint is provided with a number of positioning grooves matching the positioning protrusions.

4. A multifunctional water-purifying pull-out shower head according to claim 3, characterized in that: A circular guide portion is provided at the lower end of the water inlet body; a limiting portion is provided on one side of the guide portion; a C-shaped rotating portion is provided on the upper end surface of the water inlet joint, and the inner wall of the rotating portion is in contact with the outer wall of the guide portion; the limiting portion is located in the notch formed by the rotating portion itself; the first water inlet hole and the third water inlet hole are distributed on the left and right sides of the lower surface of the guide portion.

5. The multifunctional water-purifying pull-out shower head according to claim 3, characterized in that: A left water outlet joint communicating with the second water inlet groove is provided on the left side of the water inlet body; a water purification control device matching the left water outlet joint is provided in the left part of the shower head; a water purification hole communicating with the internal space of the shower head is provided on the left side wall of the water spray plate; a water purification nozzle matching the water purification control device is provided in the water purification hole; the water purification control device comprises a water purification seat provided in the left part of the shower head; a left quick-connect joint matching the left water outlet joint is provided on the right end of the water purification seat; a left sealing hole is provided on the upper surface of the water purification seat; a third water hole communicating with the left quick-connect joint is provided on the right side wall of the lower part of the left sealing hole; a docking hole matching the water purification nozzle is provided on the left side of the front side wall of the water purification seat head; a fourth water-through hole communicating with the docking joint is provided on the left inner wall of the upper part of the left sealing hole; a left sealing seat matching the left sealing hole is provided in the left sealing hole; a left opening and closing hole is provided in the center of the left sealing seat; a plurality of left water delivery holes communicating with the left opening and closing hole are provided on the outer wall of the left sealing seat, and the left opening and closing hole is communicated with the fourth water-through hole through the left water delivery hole; an automatic telescopic locking mechanism matching the left opening and closing hole is provided in the left opening and closing hole; a left spring is provided between the lower end of the automatic telescopic locking mechanism and the bottom of the left sealing hole; a left pressing port communicating with the internal space of the shower head is provided on the upper surface of the left part of the shower head; a water purification button matching the upper end of the automatic telescopic locking mechanism is provided in the left pressing port.

6. The multifunctional water-purifying pull-out shower head according to claim 3, characterized in that: The water switching device includes a switching seat arranged in the right part of the shower head; a right quick connector matching the right water outlet connector is arranged on the left side of the switching seat; a right sealing hole is arranged in the center of the upper surface of the switching seat; an elastic cavity coaxial with the right sealing hole is arranged in the lower part of the switching seat; a connecting hole communicating with the elastic cavity is arranged in the center of the bottom of the right sealing hole; a lower sealing cone surface which is wide at the top and narrow at the bottom is arranged at the upper end of the connecting hole; a fifth water-through hole communicating with the right quick connector is arranged on the inner wall on the left side of the lower part of the right sealing hole; a bubbler mounting head and an adapter are arranged on the right side wall of the right sealing hole; the bubbler mounting head is coaxial with the adapter, and the bubbler mounting head encloses the adapter; a sixth water-through hole communicating with the adapter is arranged on the inner wall on the right side of the middle part of the right sealing hole; the outer wall of the adapter The gap between the shower head and the inner wall of the bubbler mounting head is connected through the seventh water-through hole and the elastic cavity; an opening connected with the internal space is provided at the center of the right end face of the shower head; a positioning piece matching the right end of the bubbler mounting head is provided in the opening; a bubbler matching with it is provided in the right end port of the bubbler mounting head; a center hole is provided in the center of the bubbler; a blade water outlet structure matching with the center hole is provided at the right end port of the adapter; a right sealing seat matching with it is provided in the right sealing hole; a right opening and closing hole axially penetrating through the right sealing seat is provided in the center; a plurality of right water delivery holes corresponding to the positions of the sixth water-through hole are provided on the outer wall of the right sealing seat, and the right opening and closing hole is connected with the sixth water-through hole through the right water delivery hole; an automatic sealing structure matching with it is provided in the right opening and closing hole.

7. A multifunctional water-purifying pull-out shower head according to claim 6, characterized in that: The automatic sealing structure comprises a switching rod arranged in the right opening and closing hole; a limiting ring is arranged on the inner wall of the upper end opening of the right opening and closing hole; the upper end of the switching rod passes upward through the inner hole of the limiting ring; a truncated cone is arranged on the outer wall of the switching rod; an annular sealing groove is arranged on the outer wall of the truncated cone; a sealing ring matching with it is arranged in the sealing groove, and the outer edge of the sealing ring protrudes outward to the outside of the sealing groove; an upper sealing cone surface which is narrow at the top and wide at the bottom is arranged on the lower end opening of the right opening and closing hole, and the outer edge of the upper surface of the sealing ring is in contact with the upper sealing cone surface; the inner wall of the lower side of the elastic cavity is provided with a sealing ring which is narrow at the top and wide at the bottom ... A guide rod is provided at the center; a guide hole coaxial with the guide rod is provided at the center of the lower end surface of the switching rod, and the upper end of the guide rod is inserted into the guide hole upward; a right spring is provided outside the guide rod between the lower end surface of the switching rod and the lower inner wall of the elastic cavity; a right pressing port communicating with the internal space is provided on the upper surface of the right part of the shower head; a switching button is provided in the right pressing port; an articulated seat is provided on the upper surface of the bubbler mounting head; the right end of the switching button is hinged on the articulated seat; the upper end of the switching rod is pressed against the upper inner wall of the left part of the switching button.

8. The multifunctional water-purifying pull-out shower head according to claim 6, characterized in that: The blade water outlet structure includes a blade water outlet seat arranged at the right end port of the adapter; a water inlet hole communicating with the adapter is arranged at the center of the left end surface of the blade water outlet seat; a square blade hole is arranged at the center of the right end surface of the blade water outlet seat, and the blade hole communicates with the water inlet hole through an elliptical hole; the width of the blade hole gradually decreases toward the elliptical hole.

9. The multifunctional water-purifying pull-out shower head according to claim 6, characterized in that: The inner wall of the opening is provided with an annular positioning step, and the outer edge of the left side wall of the positioning member is in contact with the positioning step; the positioning member is annular, and the right end of the bubbler is located in the inner hole of the positioning member; the right end face of the bubbler mounting head is in contact with the inner edge of the left side wall of the positioning member; the left side wall of the positioning member is provided with a plurality of positioning ribs enclosing the right end of the bubbler mounting head; the left side wall of the positioning member is provided with a plurality of elastic arms evenly distributed around the circumference, and the elastic arms are adjacent to the positioning ribs; an annular clamping groove is provided on the right part of the bubbler mounting head; and a clamping hook matching the clamping groove is provided on the right end of the elastic arm.

10. The multifunctional water-purifying pull-out shower head according to claim 4, characterized in that: A movable hole is provided at the center of the upper end face of the water purification connector; a square hole coaxial with the movable hole is provided on the lower surface of the water inlet body; a positioning step is provided at the edge of the hole opening at the lower end of the movable hole; a fixed shaft matching therewith is provided in the movable hole; a square head matching the square hole is provided at the center of the upper end face of the fixed shaft; a positioning portion fitting with the positioning step is provided at the lower end of the fixed shaft; a through hole is provided at the center of the lower surface of the fixed shaft, and the hole opening at the upper end of the through hole is located on the upper surface of the square head; a screw hole communicating with the through hole is provided at the bottom of the square hole.

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