CN204239806U - Bathroom faucet - Google Patents

Abstract

The utility model is applicable to sanitary bath equipment field, provide a kind of bathroom faucet, comprise water volume control device, water volume control device has mixing chamber structure, the first adjusting element and the second adjusting element, mixing chamber structure has the first water inlet, the second water inlet and water outlet, the first adjusting element and the second adjusting element all with mixing chamber anatomical connectivity; The outer installment of water volume control device has the masking structure for covering water volume control device, masking structure has the first perforation, the second perforation and two through holes, the position that mixing chamber structure has the first water inlet passes to outside masking structure from first, the position with the second water inlet then passes to outside masking structure from second, and the first adjusting element and the second adjusting element respectively self-corresponding through hole pass to outside masking structure.The bathroom faucet that the utility model provides, it not only can place bath articles, also effectively can intercept the heat that hot water produces, the potential safety hazard that can be burned when touching bathroom faucet when overcoming use.

Description

Bathroom faucet

Technical field

The utility model belongs to sanitary bath equipment field, particularly relates to a kind of bathroom faucet.

Background technique

Along with the progress of industrial technology and the maintenance of personal hygiene day by day come into one's own, sanitary bath equipment is popularly arranged at each family, company or public place.And the modal bathroom faucet being water pipe end and installing in sanitary bath equipment, its major function is the confluent for controlling water pipe, for the object that user can utilize the water outlet of water pipe to reach clean.In addition, bathroom faucet is now mostly the design that two water inlet coordinates single water outlet, thus can adjust the water yield of cold water and hot water respectively, and then reaches the object controlling water-exit temperature.

But, when user uses bathroom faucet to rinse, its bath articles (as breast of washing one's hands, bath oil, shampoo or soap etc.) is normally placed on shelf or floor, and it is not too convenient not only to take, and easily have mouldy or grow bacterium the facts produce.

In addition, above-mentioned bathroom faucet is make with metal mostly, and makes bathroom faucet when supplying hot water, and the position between this bathroom faucet hot water water inlet to water outlet will affect by hot water, and causes temperature increase to the high temperature close to hot water.Thus, after user uses hot water a period of time, if when user touches this bathroom faucet because of carelessness, the high temperature on the position between the hot water water inlet of this bathroom faucet to water outlet, then have the potential safety hazard causing user to be easily burned.

Model utility content

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of bathroom faucet, and it not only can place bath articles, also effectively can intercept the heat that hot water produces, the potential safety hazard that can be burned when touching bathroom faucet when overcoming use.

The utility model is achieved in that a kind of bathroom faucet, comprise water volume control device, described water volume control device has mixing chamber structure, the first adjusting element and the second adjusting element, described mixing chamber structure has the first water inlet, the second water inlet and water outlet, described first adjusting element and described second adjusting element all with described mixing chamber anatomical connectivity; The outer installment of described water volume control device has the masking structure stating water volume control device for shelter, described masking structure has the first perforation, the second perforation and two through holes, the position that described mixing chamber structure has described first water inlet passes to outside described masking structure from described first, the position with described second water inlet then passes to outside described masking structure from described second, and described first adjusting element and described second adjusting element respectively self-corresponding described through hole pass to outside described masking structure.

Particularly, described masking structure has the first covering and the second covering, and described first covering has described first perforation, described second perforation and two the first breach; Described second covering is connected with described first covering, and corresponding each described first indentation, there has second breach respectively, and described second breach and described first breach enclose and form described through hole.

Particularly, described first covering has the first water outlet breach, the position of the corresponding described first water outlet breach of described second covering has the second water outlet breach, and encloses formation osculum with described first water outlet breach; The position that described mixing chamber structure has described water outlet passes to outside described masking structure from described osculum.

Particularly, described first covering comprises base plate, backboard and two the first side plates, and described base plate one end is connected with described backboard, and has described first water outlet breach; Described backboard has described first perforation and described second perforation; First side plate described in two lays respectively at the relative both sides of described base plate, and respectively has described first breach; Described second covering is connected with described first covering, and comprises header board, top board and two the second side plates, and described header board one end is connected with described top board, and the other end then has described second water outlet breach, and abuts with the described base plate of described first covering; Second side plate described in two is connected to the relative both sides of described top board, and is connected with the first side plate described in two respectively, and corresponding each described first indentation, there of the second side plate described in two has described second breach respectively.

Further, described water volume control device also comprises and is arranged at structural first screw of described mixing chamber, and described base plate has the lower positioning hole just right with described first screw, and described lower positioning hole is equipped with the first bolt be connected with described first screw.

Particularly, inside described header board, be convexly equipped with multiple positioning block, and each described positioning block presses on described base plate.

Particularly, described first covering comprises backboard and two the first side plates, and described backboard has described first perforation and described second perforation; First side plate described in two respectively has described first breach; Described second covering is connected with described first covering, and comprises header board and top board, and described header board one end is connected with described top board, and the space that described first covering is arranged in described header board, described top board encloses; The inner side surface of described header board forms described second breach.

Further, described second covering also comprises the substrate being connected to the described header board the other end, and described first covering is arranged in the space that described header board, described top board and described substrate enclose.

Further, described first covering also has at least one first locating face, and described second covering has at least one second locating face, described second locating face abuts with described first locating face, and the shape complementarity of the shape of described second locating face and described first locating face.

Preferably, the shape of described first locating face and described second locating face is in complementary cambered surface.

Further, described water volume control device also comprises and is arranged at structural two the second screws of described mixing chamber, the both sides that described base plate is relative are respectively arranged with positioning plate, positioning plate described in two is close to described first side plate respectively and arranges, positioning plate described in two is respectively arranged with the first positioning hole being right against described second screw, described second covering is provided with the second positioning hole being right against described first positioning hole, described first positioning hole be all equipped with the second bolt be connected with described second screw in described second positioning hole.

Further, the outside of described top board is also provided with groove.

Further, described masking structure also comprises multiple tread plate be arranged on described top board outer surface.

Particularly, the first side plate is respectively equipped with in the both sides of described first covering, corresponding each described first side plate is respectively equipped with the first body of wall, the first compartment is formed between each described first side plate and each described first body of wall, and each described first body of wall is convexly equipped with location wall respectively away from the side of described first side plate, and be respectively equipped with the second side plate in two sides of described second covering, and each described second side plate is provided with the second locating face away from the side of wall, and extend respectively in the inner side of each described second locating face adjacent top end and be provided with positioning part, each described positioning part is placed in described first compartment.

Particularly, be provided with the first bump in the base of each described second side plate respectively to interior stretching, each described first bump can be resisted against the side of the contiguous wall of each described first side plate.

Particularly, in each described location, wall top margin is respectively equipped with the first positioning hole, and each described positioning part of described second covering is respectively equipped with the second positioning hole, and described second positioning hole and described first positioning hole just right.

A kind of bathroom faucet that the utility model provides, comprises water volume control device and masking structure, wherein: water volume control device has mixing chamber structure, the first adjusting element and the second adjusting element; Mixing chamber structure has the first water inlet, the second water inlet and water outlet, and the water flowing into mixing chamber inside configuration via the first water inlet and the second water inlet is flowed out by water outlet again; First adjusting element and the second adjusting element all with mixing chamber anatomical connectivity; Masking structure is arranged at water volume control device outside, and cover water volume control device, and there are the first perforation, the second perforation and two through holes, the position that mixing chamber structure has the first water inlet passes to outside masking structure from first, the position with the second water inlet then passes to outside masking structure from second, the first adjusting element and the second adjusting element then respectively self-corresponding through hole pass to outside masking structure.

By such setting, masking structure not only can put bath articles for user, also effectively can intercept the heat that hot water produces, even if thus guarantee user's touching bathroom faucet, do not have the potential safety hazard of scald yet, and then promote the Security that user uses.

Accompanying drawing explanation

Fig. 1 is the stereogram of the bathroom faucet that the utility model embodiment provides;

Fig. 2 is the stereogram at another visual angle of bathroom faucet that the utility model embodiment provides;

Fig. 3 is the exploded view of the bathroom faucet that the utility model embodiment provides;

Fig. 4 is the stereogram of the masking structure that the utility model embodiment provides;

Fig. 5 is the stereogram of the first covering that the utility model embodiment provides;

Fig. 6 is the stereogram of the second covering that the utility model embodiment provides;

Fig. 7 is that the top board of the second covering that the utility model embodiment provides arranges reeded schematic diagram;

Fig. 8 is the schematic diagram that the top board of the second covering that the utility model embodiment provides is provided with non-slip nosing;

Fig. 9 is the schematic diagram of another masking structure on the bathroom faucet that provides of the utility model embodiment;

Figure 10 is the schematic diagram of another masking structure on the bathroom faucet that provides of the utility model embodiment.

Figure 11 is the schematic perspective view of the masking structure that another embodiment of the utility model provides;

Figure 12 is the schematic perspective view of the first masking structure that another embodiment of the utility model provides;

Figure 13 is the schematic perspective view of the second masking structure that another embodiment of the utility model provides.

Symbol description

1 bathroom faucet

10 water volume control devices

12 mixing chamber structures

121 first water inlet 122 second water inlet 123 water outlets

124 first screw 125 second screws

14 first adjusting elements

16 second adjusting elements

20 masking structures

21 first coverings

211 base plates

2111 first water outlet breach 2112 times positioning holes

212 backboards

2121 first perforation 2,122 second perforation

213 first side plates

2131 first locating face 2,132 first breach

214 positioning plates

2141 first positioning holes

22 second coverings

221 header boards

2211 positioning block 2,212 second water outlet breach

222 top boards

223 second side plates

2231 second breach 2,232 second locating face 2,233 second positioning holes

23 second coverings

231 top cover 232 grooves

24 second coverings

241 top cover 242 non-slip nosings

31 first bolt 32 second bolt 33 the 3rd bolt 34 the 4th bolts

40 masking structures

41 first coverings

411 first breach

42 second coverings

421 header board 422 top board 423 base plates

50 masking structures

51 first coverings

511 side plate 512 first breach

52 second coverings

521 header board 522 top board 523 second breach

60 masking structures

61 first coverings

611 first side plate 612 first body of wall 613 first compartments

614 location wall 615 first positioning holes

62 second coverings

621 second side plate 622 first bump 623 second locating faces

624 positioning part 625 second positioning holes

100 walls

110 hot water pipes

120 cold water pipelines

Embodiment

In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.

As depicted in figs. 1 and 2, the bathroom faucet 1 that the utility model first preferred embodiment provides, it is arranged on wall 100, and is connected with hot water pipe 110 and cold water pipeline 120, and comprises a water volume control device 10 and a masking structure 2.

Please participate in Fig. 3, wherein water volume control device 10 is be arranged on wall 100, and has mixing chamber structure 12, first adjusting element 14 and the second adjusting element 16.This mixing chamber structure 12 has the first water inlet 121, second water inlet 122 and water outlet 123, and the first water inlet 121 connects hot water pipe 110, second water inlet 122 connects cold water pipeline 120, and it is inner to flow into mixing chamber structure 12 through the first water inlet 121 and the second water inlet 122 respectively from the water making hot water pipe 110 with cold water pipeline 120, then flowed out by water outlet 123.First adjusting element 14 and the second adjusting element 16 are connected with mixing chamber structure 12 and respectively in the structure of valve, and the adjustment knob had respectively in order to difference control valve opening and closing degree, and then regulate and flow to from hot water pipe 110 water yield that the water yield of mixing chamber structure 12 inside and cold water pipeline 120 flow to mixing chamber structure 12 inside, thus user reaches by the adjustment knob of turn first adjusting element 14 and the second adjusting element 16 object controlling water-exit temperature.Certainly, in other embodiments, also can be the first adjusting element 14 for regulating the water temperature from water outlet 123 water outlet, the second adjusting element 16 is then for regulating the water yield from water outlet 123 water outlet.In addition, water volume control device 10 is provided with near the first screw 124, first water inlet 121 and the second water inlet 122 and is respectively arranged with the second screw 125 near the water outlet 123 of mixing chamber structure 12.

As shown in Figures 2 to 5, the coated water volume control device 10 of masking structure 20, masking structure 20 has the first covering 21 and the second covering 22.Wherein, the first covering 21 includes base plate 211, backboard 212, two the first side plates 213 and two positioning plates 214.This base plate 211 has the first water outlet breach 2111 and is positioned at the lower positioning hole 2112 of water outlet breach 2111 side, and this lower positioning hole 2112 is just to the first screw 124 near water outlet 123.Backboard 212 is connected with base plate 211, and there is the first perforation 2121 and the second perforation 2122, and as seen from Figure 2, the position that this mixing chamber structure 12 has the first water inlet 121 passes from the first perforation 2121 and is connected with hot water pipe 110 to masking structure 20 is outer, and the position that mixing chamber structure 12 has the second water inlet 122 then passes to masking structure 12 from the second perforation 2122 and is connected with cold water pipeline 120 outward.Two the first side plates 213 are connected to the relative both sides of base plate 211, and two the first side plates 213 have the first locating face 2131 and the first breach 2132 of opposing setting respectively, and in the present embodiment, the first locating face 2131 is in convex globoidal.Two positioning plates 214 are arranged at the position of base plate 211 close to two first side plates 213 respectively, and be respectively arranged with the first positioning hole 2141 near top on two positioning plates 214, and these two the first positioning holes 2141 are respectively just to the second screw 125 of the first water inlet 121 and the second water inlet 122 vicinity.

Particularly, as shown in Figure 4 and Figure 6, the second covering 22 is connected with the first covering 21, and the second covering 22 comprises header board 221, top board 222 and the second side plate 223.Header board 221 is curved, and side bottom is provided with three positioning blocks 2211 in the inner, and each positioning block 2211 is pressed against on base plate 211, and the position of the corresponding first water outlet breach 2111 of the ora terminalis of header board 221 has the second water outlet breach 2212, in order to enclose formation osculum with the first water outlet breach 2111, and the position that mixing chamber structure 12 has water outlet 123 then passes to outside masking structure 10 from osculum.This top board 222 is connected with header board 221, and is positioned at the top of water volume control device 10, and covers the top side of this water volume control device 10.Two the second side plates 223 are connected to top board 222 both sides relative with header board 221, and the second side plate 223 has the second breach 2231, second locating face 2232 and the second positioning hole 2233, second breach 2231 has two, two second breach 2231 are involutory with the first corresponding breach 2132 and enclose and be formed with through hole, the adjustment knob of the first adjusting element 14 and the second adjusting element 16 then respectively self-corresponding through hole pass to outside masking structure 20, and the shape of the second locating face 2232 is in the concave arc surface with the first locating face 2131 shape complementarity, and abut with the first locating face 2131, and the second positioning hole 2223 is right against the first positioning hole 2141.

Particularly, after above-mentioned water volume control device 10 is assembled with masking structure 20, just the second bolt 32 is threaded with the second screw 125 be arranged near the first water inlet 12 and the second water inlet 122 after can be utilized to be each passed through the second corresponding positioning hole 2233 and the first positioning hole 2141, and recycle the first bolt 31 and be threaded with the first screw 124 near water outlet 123 through after lower positioning hole 2112, thus masking structure 20 is firmly fixed on water volume control device 10 outside.

Particularly, by above-mentioned design, top board 222 surface of the second covering 22 is just available for users to soap, the bath articles such as bath oil or cleaning tool, and then the convenience increased in bathroom faucet 1 use, and by each positioning block 2211 of the second covering 22 is pressed against on the base plate 211 of the first covering 21, and first design that abut against of locating face 2131 and the second locating face 2232, except facilitating contraposition and assembling, also effectively can increase the reliability of this masking structure 20, even if make bath articles heavier-weight, or user's touching or dynamics when compressing this bathroom faucet 1 larger time, also the first covering 21 can not be caused to be separated with the second covering 22, and then avoid user to have the problem of potential safety hazard to occur in use.

In addition, even if user continues to use hot water, thus the spot temperature between the first water inlet 121 of mixing chamber structure 12 and water outlet 123 is raised, but because this masking structure 20 is by coated for water volume control device 10 and separate, thus make the temperature of the masking structure 20 being positioned at water volume control device 10 outside can not be subject to hot water mitigation, even if guarantee that user touches this bathroom faucet 1 when using hot water, do not have the danger of scald yet, and then promote the Security in user's use.

Further, masking structure 20 is under said structure basis, the second covering 23 as shown in Figure 7 also can be set, groove 232 is become in its top board 231 upper punch swaging, or the second covering 24 as shown in Figure 8, its top board 241 is provided with multiple tread plate 242, setting like this, be available for users in the second covering 24 soap, bath oil or cleaning tool being directly seated in the second covering 23 or another structure, time upper, can prevent from putting the light caducous situation of thing to occur, thus the convenience in bathroom faucet 1 use can be promoted.

Further, as shown in Figure 9, another kind of masking structure 40 is additionally provided in the present embodiment, its second covering 42 is designed with header board 421, top board 422 and substrate 423, and the inner side cambered surface of header board 421 forms the second breach 424, corresponding with the first breach 411 of the first covering 41, and this second covering 42 is fixed in the first covering 41 by the 3rd bolt 33, thus can be coated and cover top side and the bottom side of the first covering 41 and water volume control device 10.Or another masking structure 50 is as shown in Figure 10 provided, the first breach 512 is formed in side plate 511 front end of the first covering 51, second covering 52 is then only provided with header board 521 and top board 522, and the second breach 523 that the inner side cambered surface of header board 521 is formed is corresponding with the first breach 512, and the second covering 52 is lock onto the first covering 51 by the 4th bolt 34, thus the top side of the first covering 51 and water volume control device 10 can be covered, the object separating water volume control device can be reached equally, even if make user touch bathroom faucet, the danger of scald is not had yet.

Further, refer to Figure 11 to Figure 13, the schematic perspective view of its masking structure 60 provided for another embodiment of the utility model, this masking structure 60 comprises the first covering 61 and the second covering 62, wherein, the first side plate 611 is respectively equipped with in two sides of the first covering 61, corresponding each first side plate 611 is also respectively equipped with the first body of wall 612, the first compartment 613 is formed between each first side plate 611 and each first body of wall 612, and each first body of wall 612 is convexly equipped with location wall 614 respectively away from the side of the first side plate 611, and be respectively equipped with the first positioning hole 615 in the top margin of each location wall 614, and two sides of this second covering 62 are respectively equipped with the second side plate 621, each second side plate 621 base is provided with the first bump 622 respectively to interior stretching, and each second side plate 621 is provided with the second locating face 623 away from the side of wall 100, and extend respectively in the inner side of each second locating face 623 adjacent top end and be provided with positioning part 624, and each positioning part 624 has the second positioning hole 625 respectively.

In the present embodiment, when assembling this masking structure 60, first compartment 613 can be accommodating for the positioning part 624 of the second side plate 621, add the guide function that the first body of wall 612 provides, positioning part 624 is made to stablize along each first body of wall 612 and to arrive location fast, the second positioning hole 625 and the first positioning hole 615 Rapid Relative is allowed to close, to reduce the time of assembling, and utilize first bump 622 on each second side plate 621 base to be resisted against the side of the contiguous wall 100 of each first side plate 611, make between the first covering 61 and the second covering 62 more closely sealed.

Should be noted that, these are only the better possible embodiments of model utility, not as limit, for example, upper outside except screw being arranged at mixing chamber structure, also directly can be arranged in the first covering or this second covering, the object of fixing the first covering and the second covering can be reached equally.In addition, the first locating face and the second locating face are except the complementary design presenting arc, and the complementary design that also can present polygonal or inequilateral shape reaches location and fixing object.All do within spirit of the present utility model and principle any amendment, equivalent to replace or improvement etc., all should be included within protection domain of the present utility model.

Claims (16)

1. a bathroom faucet, it is characterized in that, comprise water volume control device, described water volume control device has mixing chamber structure, the first adjusting element and the second adjusting element, described mixing chamber structure has the first water inlet, the second water inlet and water outlet, described first adjusting element and described second adjusting element all with described mixing chamber anatomical connectivity; The outer installment of described water volume control device has the masking structure stating water volume control device for shelter, described masking structure has the first perforation, the second perforation and two through holes, the position that described mixing chamber structure has described first water inlet passes to outside described masking structure from described first, the position with described second water inlet then passes to outside described masking structure from described second, and described first adjusting element and described second adjusting element respectively self-corresponding described through hole pass to outside described masking structure.

2. bathroom faucet as claimed in claim 1, it is characterized in that, described masking structure has the first covering and the second covering, and described first covering has described first perforation, described second perforation and two the first breach; Described second covering is connected with described first covering, and corresponding each described first indentation, there has second breach respectively, and described second breach and described first breach enclose and form described through hole.

3. bathroom faucet as claimed in claim 2, it is characterized in that, described first covering has the first water outlet breach, the position of the corresponding described first water outlet breach of described second covering has the second water outlet breach, and encloses formation osculum with described first water outlet breach; The position that described mixing chamber structure has described water outlet passes to outside described masking structure from described osculum.

4. bathroom faucet as claimed in claim 3, it is characterized in that, described first covering comprises base plate, backboard and two the first side plates, and described base plate one end is connected with described backboard, and has described first water outlet breach; Described backboard has described first perforation and described second perforation; First side plate described in two lays respectively at the relative both sides of described base plate, and respectively has described first breach; Described second covering is connected with described first covering, and comprises header board, top board and two the second side plates, and described header board one end is connected with described top board, and the other end then has described second water outlet breach, and abuts with the described base plate of described first covering; Second side plate described in two is connected to the relative both sides of described top board, and is connected with the first side plate described in two respectively, and corresponding each described first indentation, there of the second side plate described in two has described second breach respectively.

5. bathroom faucet as claimed in claim 4, it is characterized in that, described water volume control device also comprises and is arranged at structural first screw of described mixing chamber, and described base plate having the lower positioning hole just right with described first screw, described lower positioning hole is equipped with the first bolt be connected with described first screw.

6. bathroom faucet as claimed in claim 4, it is characterized in that, be convexly equipped with multiple positioning block inside described header board, and each described positioning block presses on described base plate.

7. bathroom faucet as claimed in claim 2, it is characterized in that, described first covering comprises backboard and two the first side plates, and described backboard has described first perforation and described second perforation; First side plate described in two respectively has described first breach; Described second covering is connected with described first covering, and comprises header board and top board, and described header board one end is connected with described top board, and the space that described first covering is arranged in described header board, described top board encloses; The inner side surface of described header board forms described second breach.

8. bathroom faucet as claimed in claim 7, it is characterized in that, described second covering also comprises the substrate being connected to the described header board the other end, and described first covering is arranged in the space that described header board, described top board and described substrate enclose.

9. bathroom faucet as claimed in claim 2, it is characterized in that, described first covering also has at least one first locating face, and described second covering has at least one second locating face, described second locating face abuts with described first locating face, and the shape complementarity of the shape of described second locating face and described first locating face.

10. bathroom faucet as claimed in claim 9, is characterized in that, the shape of described first locating face and described second locating face is in complementary cambered surface.

11. bathroom faucets as claimed in claim 2, it is characterized in that, described water volume control device also comprises and is arranged at structural two the second screws of described mixing chamber, the both sides that described base plate is relative are respectively arranged with positioning plate, positioning plate described in two is close to described first side plate respectively and arranges, positioning plate described in two is respectively arranged with the first positioning hole being right against described second screw, described second covering is provided with the second positioning hole being right against described first positioning hole, described first positioning hole be all equipped with the second bolt be connected with described second screw in described second positioning hole.

12. bathroom faucets as described in claim 4 or 7, it is characterized in that, the outside of described top board is also provided with groove.

13. bathroom faucets as described in claim 4 or 7, it is characterized in that, described masking structure also comprises multiple tread plate be arranged on described top board outer surface.

14. bathroom faucets as claimed in claim 3, it is characterized in that, the first side plate is respectively equipped with in the both sides of described first covering, corresponding each described first side plate is respectively equipped with the first body of wall, the first compartment is formed between each described first side plate and each described first body of wall, and each described first body of wall is convexly equipped with location wall respectively away from the side of described first side plate, and be respectively equipped with the second side plate in two sides of described second covering, and each described second side plate is provided with the second locating face away from the side of wall, and extend respectively in the inner side of each described second locating face adjacent top end and be provided with positioning part, each described positioning part is placed in described first compartment.

15. bathroom faucets as claimed in claim 14, is characterized in that, are provided with the first bump in the base of each described second side plate respectively to interior stretching, and each described first bump can be resisted against the side of the contiguous wall of each described first side plate.

16. bathroom faucets as claimed in claim 14, it is characterized in that, in each described location, wall top margin is respectively equipped with the first positioning hole, and each described positioning part of described second covering is respectively equipped with the second positioning hole, and described second positioning hole and described first positioning hole just right.