Three-pipe pre-fixed shower faucet main body

Abstract

The utility model provides a three-pipe pre-fixing shower faucet main body which comprises a shell, a first welding opening, a second welding opening and third welding openings, wherein the first welding opening and the second welding opening are formed in the rear side of the shell, and the third welding openings are formed in the upper side, the lower side and the front side of the shell respectively. The cold and hot mounting piece is provided with a first inlet, a second inlet and a first outlet, and a water inlet pipe is welded to the first inlet; the device further comprises a switching installation part and a middle positioning part, the switching installation part is provided with a third inlet and three second outlets arranged in a triangular mode, positioning holes are formed in the upper side, the lower side and the front side of the middle positioning part, water outlet pipes are welded between the positioning holes and the second outlets, and a guiding area is formed among the three water outlet pipes. The switching mounting piece is arranged from one end of the shell, and the positioning holes correspond to the third welding openings and are welded and fixed; and the cold and hot mounting piece is arranged from the other end of the shell, so that the water inlet pipe is guided along the guide area to be welded with the first welding opening. The utility model has the advantage of effectively improving the hole location positioning accuracy during assembling and welding.

Description

Technical Field

[0001] The utility model relates to the field of shower faucets, in particular to a three-tube pre-fixed shower faucet body. Background Art

[0002] Existing shower faucets are generally solid metal structures, and the water channels are processed by sand casting or drilling. They have problems such as heavy overall weight, high material cost, and complex production process. At the same time, the water channel from the hot water inlet to the mixing valve core is in direct contact with high-temperature hot water, and the temperature will be transmitted to the outer wall through the shell, which can easily cause burns to users when they touch it during use.

[0003] To address the above-mentioned issues, the applicant adopted the method of welding built-in pipes for production. However, in the subsequent production process, the applicant discovered that after the pre-assembly of the accessories at both ends of the shell, the pipes had errors in the position accuracy of the cantilever ends due to bending or shrinkage after welding. When the pipes were assembled on the shell and welded to the shell, it was often difficult to align the pipes (position correction was required), which seriously affected production efficiency. Utility Model Content

[0004] Based on the above problems, the purpose of this utility model is to provide a three-tube pre-fixed shower faucet body that has a simple structure, light weight, low production cost, and can effectively avoid burns, while improving the hole positioning accuracy during assembly and welding.

[0005] In response to the above problems, the following technical solutions are provided: a three-tube pre-fixed shower faucet body, comprising a tubular shell, wherein the rear side of the shell is provided with a first welding port and a second welding port spaced apart along its axial direction, and third welding ports located on the upper, lower and front sides of the shell respectively between the first welding port and the second welding port; further comprising a hot and cold mounting member provided with a first inlet, a second inlet and a first outlet, wherein the first inlet is located at the bottom thereof and welded with a water inlet pipe extending outward along its axial direction; further comprising a switching mounting member and an intermediate positioning member spaced apart from its bottom, wherein the switching mounting member is provided with a third inlet and three second outlets arranged in a triangle at its bottom, and the intermediate positioning member is ring / arc-shaped and Its upper, lower and front sides are all provided with positioning holes opened along its radial direction, and each positioning hole corresponds to one end of the inner side of the intermediate positioning piece and is welded to each second outlet through an outlet pipe, and a guide area with an opening facing the rear side of the shell is formed between the three outlet pipes; the switching mounting piece is inserted from one end of the shell and the intermediate positioning piece is fit to the inner wall of the shell, while each positioning hole is corresponding to the third welding port and welded fixed; the hot and cold mounting piece is inserted from the other end of the shell and the cantilever end of the water inlet pipe is guided along the guide area to the position of the first welding port and welded fixed; the first outlet and the third inlet are connected to each other through the inner cavity of the shell; the second welding port is tightly fitted to the second inlet and welded fixed or welded connected through a transition pipe.

[0006] The utility model is further configured such that the hot and cold mounting parts are provided with a temperature regulating valve core, which adjusts the water supply ratio between the first inlet and the second inlet and outputs the water from the first outlet; the switching mounting part is provided with a switching valve core, which controls the interruption and selection of the water flow between the third inlet and each second outlet.

[0007] The present invention is further configured such that a sealing ring is provided between the hot and cold mounting member, the switching mounting member and the inner wall of the shell or they are fixed by welding.

[0008] The present invention is further configured such that water inlet joints are welded to the outer wall of the shell at positions corresponding to the first welding port and the second welding port; and a water outlet joint is welded to the outer wall of the shell at a position corresponding to the third welding port.

[0009] The present invention is further configured such that the shell, hot and cold mounting parts, intermediate positioning parts, switching mounting parts, water inlet joint, water outlet joint, water outlet pipe and water inlet pipe are made of stainless steel or copper or copper alloy.

[0010] The present invention is further configured such that the first inlet, the second inlet and the first outlet are all located at the bottom of the hot and cold mounting member.

[0011] The present invention is further configured such that the hot and cold mounting member includes a first base plate or a first base plate and a first cylinder, and the first cylinder is fixed to the first base plate by welding or formed by punching and stretching.

[0012] The present invention is further configured such that the second welding port and the second inlet are connected to each other by radially punching holes on the first bottom plate.

[0013] The present invention is further configured such that the third inlet is located at the side or bottom of the switching mounting member, and the second outlet is located at the bottom of the switching mounting member.

[0014] The present invention is further configured such that the switching mounting member includes a second base plate or a second base plate and a second cylinder, and the second cylinder is fixed to the second base plate by welding or formed by punching and stretching.

[0015] The present invention is further configured such that the positioning hole is formed by drilling or stretching.

[0016] Beneficial effects of the utility model:

[0017] 1. The intermediate positioning member and the switching mounting member are pre-assembled by pre-welding the outlet pipes. The three outlet pipes are used to fix the position between the two while ensuring that the positioning holes on the intermediate positioning member can be accurately aligned with the third welding joints. When the hot and cold mounting members are then installed, the guide area formed by the three outlet pipes is used to guide the end of the supporting water inlet pipe away from the first inlet to accurately align with the first welding joint to achieve positioning constraint. This avoids the problem of position accuracy errors caused by bending of the cantilever ends of the existing water inlet and outlet pipes or shrinkage of the welds after welding with the hot and cold mounting members and the switching mounting member, resulting in the need for continuous position correction before and after installation into the shell to meet the corresponding hole positions. This effectively saves labor and improves production efficiency.

[0018] 2. The shell and the intermediate positioning parts are preferably made of stainless steel pipes by laser cutting. The outlet pipe and the water inlet pipe are also made of stainless steel pipes, which is convenient for quick adjustment of the cutting length according to the size specifications;

[0019] 3. Since the water inlet pipe and the water outlet pipe are both located in the inner cavity of the shell, the water inlet pipe is isolated by the inner cavity of the shell regardless of whether it is cold water or hot water. The inner cavity of the shell is filled with warm water mixed with cold and hot water, which is equivalent to the actual output water temperature, so there will be no local overheating or overcooling of the shell temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0021] Figure 2 This is a schematic diagram of the first partially cutaway three-dimensional structure of the present invention from a first viewing angle.

[0022] Figure 3 This is a schematic diagram of the second partially cutaway three-dimensional structure of the present invention.

[0023] Figure 4 This is a schematic diagram of the first partial cross-section and second viewing angle stereoscopic structure of the utility model.

[0024] Figure 5 This is a schematic diagram of a third partially exploded three-dimensional structure of the present invention.

[0025] Figure 6 This is a schematic diagram of a fourth partially exploded three-dimensional structure of the present invention.

[0026] Figure 7 This is a schematic diagram of the fifth partially cutaway three-dimensional structure of the present invention.

[0027] Figure 8 This is a schematic diagram of the three-dimensional structure of the switching mounting member and the hot and cold mounting member of the present invention before assembly.

[0028] Figure 9It is a partially cutaway three-dimensional structural schematic diagram of the intermediate positioning piece after the switching mounting piece and the hot and cold mounting piece of the utility model are assembled.

[0029] The meaning of the numbers in the figure are: 10-shell; 11-first welding port; 12-second welding port; 13-third welding port; 20-hot and cold mounting parts; 201-first base plate; 202-first cylinder; 21-first inlet; 22-second inlet; 23-first outlet; 24-water inlet pipe; 30-switching mounting part; 301-second base plate; 302-second cylinder; 31-third inlet; 32-second outlet; 33-water outlet pipe; 34-guide area; 40-middle positioning part; 41-positioning hole; 50-temperature regulating valve core; 51-switching valve core; 52-water inlet connector; 53-water outlet connector. DETAILED DESCRIPTION

[0030] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] refer to Figures 1 to 9 ,like Figures 1 to 9 The three-tube pre-fixed shower faucet body shown in the figure includes a tubular shell 10, and the rear side of the shell 10 is provided with a first welding port 11 and a second welding port 12 spaced apart along its axial direction, and third welding ports 13 located on the upper, lower and front sides of the shell 10 respectively between the first welding port 11 and the second welding port 12; it also includes a hot and cold mounting member 20 with a first inlet 21, a second inlet 22 and a first outlet 23, the first inlet 21 is located at its bottom and welded with a water inlet pipe 24 extending outward along its axial direction; it also includes a switching mounting member 30 and an intermediate positioning member 40 spaced apart from its bottom, the switching mounting member 30 is provided with a third inlet 31 and three second outlets 32 arranged in a triangle at its bottom, the intermediate positioning member 40 is ring / arc-shaped and has a plurality of second inlet ports 31 and a plurality of second outlet ports 32 arranged in a triangle at its bottom on its radial direction. The positioning holes 41 are opened in the direction of the shell 10, and each positioning hole 41 corresponds to one end of the inner side of the intermediate positioning member 40 and is welded to each second outlet 32 ​​through an outlet pipe 33, and a guide area 34 with an opening facing the rear side of the shell 10 is formed between the three outlet pipes 33; the switching mounting member 30 is inserted from one end of the shell 10 and the intermediate positioning member 40 is fitted with the inner wall of the shell 10, while each positioning hole 41 is corresponding to the third welding port 13 and welded fixed; the hot and cold mounting member 20 is inserted from the other end of the shell 10 and the cantilever end of the water inlet pipe 24 is guided along the guide area 34 to the position of the first welding port 11 and welded fixed; the first outlet 23 and the third inlet 31 are connected to each other through the inner cavity of the shell 10; the second welding port 12 is tightly fitted to the second inlet 22 and welded fixed or welded connected through a transition pipe (not shown in the figure).

[0032] In the above structure, the intermediate positioning member 40 and the switching installation member 30 are pre-assembled by pre-welding the water outlet pipe 33, and the three water outlet pipes 33 are used to fix the position between the two while the positioning holes 41 on the intermediate positioning member 40 can be accurately aligned with each third welding joint 13; and then when the hot and cold installation member 20 is installed, the guide area 34 constructed by the three water outlet pipes 33 is used to guide the end of the water inlet pipe 24 away from the first inlet 21 to be accurately aligned with the first welding joint 11 to achieve positioning constraint, avoiding the position accuracy error caused by the bending of the cantilever ends of the existing water inlet pipe 24 and the water outlet pipe 33 or the shrinkage of the weld after welding with the hot and cold installation member 20 and the switching installation member 30, resulting in the need for continuous position correction before and after installation into the shell 10 to meet the corresponding problem of each hole position; effectively saving labor and improving production efficiency.

[0033] In this embodiment, the hot and cold installation part 20 is provided with a temperature regulating valve core 50, and the temperature regulating valve core 50 adjusts the water supply ratio of the first inlet 21 and the second inlet 22 and outputs it from the first outlet 23; the switching installation part 30 is provided with a switching valve core 51, and the switching valve core 51 controls the water flow between the third inlet 31 and each second outlet 32 ​​and the selection of one.

[0034] In the above structure, one end controls the water temperature and the other end controls the water outflow from each water outlet.

[0035] In this embodiment, a sealing ring (not shown in the figure) is provided between the hot and cold mounting member 20 , the switching mounting member 30 and the inner wall of the housing 10 or they are fixed by welding.

[0036] In the above structure, the hot and cold mounting member 20, the switching mounting member 30 and the inner wall or end of the shell 10 are preferably fixed by welding.

[0037] In this embodiment, water inlet joints 52 are welded to the outer wall of the shell 10 at positions corresponding to the first welding port 11 and the second welding port 12 ; and a water outlet joint 53 is welded to the position corresponding to the third welding port 13 .

[0038] In the above structure, the water inlet connector 52 is used to connect to hot and cold water pipes (pre-buried pipes in the wall), and the water outlet connector 53 is used to connect to water-using appliances such as shower heads and spray guns.

[0039] In this embodiment, the shell 10, hot and cold mounting parts 20, intermediate positioning parts 40, switching mounting parts 30, water inlet joint 52, water outlet joint 53, water outlet pipe 33, and water inlet pipe 24 are made of stainless steel, copper, or copper alloy.

[0040] In the above structure, the shell 10 and the intermediate positioning member 40 are preferably made of stainless steel pipes by laser cutting, and the water outlet pipe 33 and the water inlet pipe 24 are also made of stainless steel pipes, which is convenient for quickly adjusting the cutting length according to the size specifications.

[0041] In this embodiment, the first inlet 21 , the second inlet 22 and the first outlet 23 are all located at the bottom of the hot and cold installation member 20 .

[0042] In the above structure, the hot and cold mounting member 20 is used to mount the thermostatic valve core 50 , so that the cold water and hot water supplied from the first inlet 21 and the second inlet 22 are mixed and adjusted and then output from the first outlet 23 .

[0043] In this embodiment, the hot and cold mounting member 20 includes a first bottom plate 201 or a first bottom plate 201 and a first cylinder 202 , and the first cylinder 202 and the first bottom plate 201 are fixed by welding or formed by punching and stretching.

[0044] In the above structure, the hot and cold mounting parts 20 can be formed in one piece or in separate pieces, and the process has a wider range of applicability.

[0045] In this embodiment, the second welding port 12 and the second inlet 22 are connected to each other by radially punching holes on the first bottom plate 201 .

[0046] In the above structure, the water supply distance is effectively shortened and materials are saved. It is preferably set as a hot water supply channel to reduce heat loss while avoiding local high temperature.

[0047] In this embodiment, the third inlet 31 is located at the side or bottom of the switching installation member 30 , and the second outlet 32 ​​is located at the bottom of the switching installation member 30 .

[0048] In the above structure, the switching mounting member 30 is used to install the switching valve core 51 to realize the start and stop and / or switching of the downstream water outlet.

[0049] In this embodiment, the switching mounting member 30 includes a second bottom plate 301 or a second bottom plate 301 and a second cylinder 302 , and the second cylinder 302 and the second bottom plate 301 are fixed by welding or formed by punching and stretching.

[0050] In the above structure, the switch mounting member 30 can be formed in one piece or in separate pieces, and the process has a wider range of applicability.

[0051] In this embodiment, the positioning hole 41 is formed by drilling or stretching.

[0052] In the above structure, the middle positioning member 40 is formed by cutting and blanking a stainless steel pipe, and the positioning hole 41 is formed by punching and stretching toward the center thereof.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications based on the above assumptions should also be regarded as within the scope of protection of the present invention.

Claims

1. A three-tube pre-fixed shower faucet body, comprising a tubular housing, characterized in that: The rear side of the shell is provided with a first welding port and a second welding port spaced apart along its axial direction, and third welding ports located on the upper, lower and front sides of the shell respectively between the first welding port and the second welding port; it also includes a hot and cold mounting member provided with a first inlet, a second inlet and a first outlet, the first inlet is located at its bottom and welded with a water inlet pipe extending outward along its axial direction; it also includes a switching mounting member and an intermediate positioning member spaced apart from its bottom, the switching mounting member is provided with a third inlet and three second outlets arranged in a triangle at its bottom, the intermediate positioning member is ring / arc-shaped and its upper, lower and front sides are provided with positioning members opened along its radial direction. Hole, each positioning hole corresponds to one end of the inner side of the intermediate positioning part and is welded to each second outlet through an outlet pipe, and a guide area with an opening facing the rear side of the shell is formed between the three outlet pipes; the switching mounting part is inserted from one end of the shell and the intermediate positioning part is fitted with the inner wall of the shell, while each positioning hole is one-to-one corresponding to each third welding port and welded and fixed; the hot and cold mounting parts are inserted from the other end of the shell and the cantilever end of the water inlet pipe is guided along the guide area to the position of the first welding port and welded and fixed; the first outlet and the third inlet are connected to each other through the inner cavity of the shell; the second welding port is tightly fitted to the second inlet and welded or connected by welding through a transition pipe.

2. The three-tube pre-fixed shower faucet body according to claim 1, characterized in that: The hot and cold installation parts are provided with a temperature regulating valve core, which adjusts the water supply ratio of the first inlet and the second inlet and outputs it from the first outlet; the switching installation part is provided with a switching valve core, which controls the water flow between the third inlet and each second outlet and switches one of them.

3. The three-tube pre-fixed shower faucet body according to claim 1, characterized in that: A sealing ring is provided between the hot and cold mounting parts, the switching mounting parts and the inner wall of the shell or they are fixed by welding.

4. The three-tube pre-fixed shower faucet body according to claim 1, characterized in that: The outer wall of the shell is welded with water inlet joints at positions corresponding to the first welding port and the second welding port; and is welded with a water outlet joint at a position corresponding to the third welding port.

5. The three-tube pre-fixed shower faucet body according to claim 4, characterized in that: The shell, hot and cold installation parts, intermediate positioning parts, switching installation parts, water inlet joint, water outlet joint, water outlet pipe and water inlet pipe are made of stainless steel or copper or copper alloy.

6. The three-tube pre-fixed shower faucet body according to claim 1, characterized in that: The first inlet, the second inlet and the first outlet are all located at the bottom of the hot and cold installation member.

7. The three-tube pre-fixed shower faucet body according to claim 6, characterized in that: The hot and cold mounting member includes a first bottom plate or a first bottom plate and a first cylinder, and the first cylinder and the first bottom plate are fixed by welding or formed by punching and stretching.

8. The three-tube pre-fixed shower faucet body according to claim 7, characterized in that: The second welding port and the second inlet are connected to each other by radially punching holes on the first bottom plate.

9. The three-tube pre-fixed shower faucet body according to claim 1, characterized in that: The third inlet is located at the side or bottom of the switching mounting member, and the second outlet is located at the bottom of the switching mounting member.

10. The three-pipe pre-fixed shower faucet body according to claim 1, characterized in that: The switching mounting member includes a second bottom plate or a second bottom plate and a second cylinder, and the second cylinder and the second bottom plate are fixed by welding or formed by punching and stretching.

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