Assembled bathtub faucet

Abstract

An assembly type bathtub faucet comprises a plastic water passing core and a metal shell, and the plastic water passing core at least comprises a connecting body with a mixing cavity, a left connecting pipe, a right connecting pipe and a locking connector. The metal shell at least comprises a metal front shell, a left water inlet shell, a right water inlet shell and a rear cover plate, wherein the left water inlet shell and the right water inlet shell are communicated with the two ends of the metal front shell. An assembly hole is formed in the center of the metal front shell. A plastic core main body is arranged in each water inlet shell, a switch valve core and a valve core seat are arranged in each plastic core main body, and a water inlet waterway capable of being closed is formed in each plastic core main body; the plastic water passing core is arranged in an accommodating cavity of the metal front shell; the locking joint is communicated with an external water outlet main body and a mixing cavity of the plastic water passing core; the left connecting pipe and the right connecting pipe are respectively communicated with the two ends of the plastic water passing core and respective plastic core main bodies in a sealing manner, and are communicated with the corresponding water inlet paths; and the rear cover plate is fixed at the rear part of the metal front shell to finish assembly. According to the invention, the assembly steps are particularly simple, and the assembly trace is small and easy to hide.

Description

Technical Field

[0001] The utility model relates to the field of bathrooms, in particular to an assembled bathtub faucet. Background Art

[0002] At present, faucet devices on the market all like to use metal shells, generally zinc alloy shells are commonly used to ensure the texture of the product appearance. However, if metal is used for the internal water flow parts, the requirements for the metal material are extremely high and the price is expensive. At the same time, the thermal conductivity of metal materials is relatively strong. When a metal faucet is used, hot water can easily transfer heat energy to the faucet surface and cause the risk of scalding. Therefore, an independent plastic water channel is generally designed inside the faucet to form an insulating layer between the plastic water channel and the metal shell. This can ensure the insulation effect of the internal water channel and effectively reduce the cost of the product. However, in existing design products, the external metal shell is often designed to be more complicated, and after assembly, obvious assembly marks are left. Some manufacturers also design it as an upper and lower overall assembly method, which makes the assembly process more complicated; or due to unreasonable design, the manufacturing process of the shell is complicated, and complex molds are required to produce the corresponding metal shell, which is costly and cumbersome. Utility Model Content

[0003] The utility model aims to provide an assembled bathtub faucet which has a simple structure, good heat insulation effect, is easy to assemble and has high aesthetics after assembly.

[0004] To achieve the above object, the utility model provides an assembled bathtub faucet, comprising a plastic water core and a metal shell: the plastic water core at least comprises a connecting body with a mixing chamber and two left and right connecting pipes, and a locking joint, the connecting body comprises a conducting pipe extending outward along the left and right sides of the mixing chamber, respectively, and the left and right connecting pipes can be fixedly sealed and arranged in the left and right conducting pipes respectively;

[0005] The metal shell at least comprises a metal front shell, two left and right water inlet shells connected to the two ends of the metal front shell, and a rear cover plate, the metal front shell forms a containing cavity, and a mounting hole is arranged at the center of the metal front shell;

[0006] Each of the water inlet housings has a plastic core body built in, the interior of the plastic core body is through, and the side wall of the plastic core body is provided with a water outlet hole facing in a direction corresponding to the metal front shell; each of the plastic core bodies is provided with a switch valve core and a valve core seat, forming a water inlet waterway that can be closed inside the plastic core body;

[0007] The plastic water-passing core is placed in the accommodating cavity of the metal front shell, and one end of the locking joint is inserted outward from the assembly hole of the metal front shell and sealed and locked to a water outlet body outside the metal front shell; the other end of the locking joint is sealed and fixed to the mixing cavity of the plastic water-passing core, while avoiding the lateral movement of the plastic water-passing core; the left and right connecting pipes are respectively sealed and inserted into the water inlet shells at both ends of the metal front shell and fixed to the water outlet holes of their respective plastic core bodies, and are connected to the corresponding water inlet waterways; the rear cover plate is further fixed to the rear of the metal front shell to complete the assembly.

[0008] Furthermore, the outer walls of one end of the left and right connecting tubes that are connected to the plastic water-passing core are both provided with a first clamping groove, and the outer walls of the left and right conducting tubes are both provided with at least two pin holes at the positions corresponding to the first clamping grooves of the connecting tubes; there is a retaining spring on the left and right sides respectively, and the retaining spring includes elastic curved edges extending on both sides, and the two elastic curved edges respectively form at least a pair of opposite outward-expanding arcs, and the two opposite outward-expanding arcs form a clamping structure; the elastic curved edges on both sides of the retaining spring are respectively inserted into the two pin holes of the corresponding conducting tube, and are clamped into the first clamping groove of the connecting tube in the conducting tube, and the clamping structure fixes the connecting tube in the conducting tube to prevent the connecting tube from axial movement.

[0009] Furthermore, the left and right conducting tubes respectively penetrate two transverse through slots at positions corresponding to the first slots of the connecting tubes, and the through slots penetrate the tube walls of the conducting tubes to form four pin holes, which are conducive to the clamping of the retaining spring with sufficient movement space and accommodation position.

[0010] Furthermore, the upper and lower inner walls of the metal front shell corresponding to the left and right conducting tubes are provided with two blocks in a group side by side, and a gap is provided between the two blocks in a group; the outer walls of the left and right conducting tubes are respectively provided with an arc-shaped retaining ring, and the upper and lower parts of the arc-shaped retaining ring have a clamping edge, and the upper and lower clamping edges of the arc-shaped retaining ring are respectively clamped in the gap between the upper and lower groups of block blocks, so that the plastic water core is clamped in the accommodating cavity of the metal front shell, thereby avoiding the forward and backward movement of the plastic water core.

[0011] Furthermore, a protrusion is arranged on the outer wall of the left and right conducting tubes at a horizontal interval at the position of each pin hole, and the arc-shaped retaining ring and the upper and lower groups of retaining blocks are arranged at positions corresponding to the interval. When the upper and lower clamping edges of the arc-shaped retaining ring are buckled between the retaining blocks, the arc-shaped retaining ring is just clamped between the protrusion and the retaining spring, thereby avoiding lateral movement of the arc-shaped retaining ring.

[0012] Furthermore, the interior of the plastic core body is connected, and the interior includes a valve core cavity with a large inner diameter at the top, a water path cavity with a medium inner diameter in the middle, and a water inlet cavity with a small inner diameter at the bottom; the wall of the water path cavity is provided with a water outlet hole, the valve core cavity is equipped with a switch valve core, and the outer diameter of a valve core seat matches the water inlet cavity, one end of the valve core seat is sealed and fixed to the water inlet cavity of the plastic core body, and the other end is sealed and connected to the water inlet of the switch valve core; the water outlet of the switch valve core is connected to the water path cavity outside the valve core seat and then to the water outlet hole, which is the external water channel; the connection between the water inlet cavity and the valve core seat is the internal water inlet channel.

[0013] Furthermore, a positioning structure is provided between the water inlet housing and the plastic core body, so that when the plastic core body is placed into the water inlet housing, the water outlet hole on the plastic core body is exactly corresponding to the metal front shell.

[0014] Furthermore, the positioning structure is designed to provide an inner ring convex edge at the upper end of the water inlet shell, and a number of grooves are evenly distributed on the inner ring convex edge; corresponding positions on the upper part of the plastic core body are provided with bosses with the same number of grooves, and when the plastic core body is placed in the water inlet shell, the bosses thereon are engaged one by one with the grooves of the water inlet shell to achieve positioning.

[0015] Furthermore, a fixed pin is respectively provided below the two water inlet housings, and the fixed pin is locked with the bottom of the water inlet housing, and the bottom of each plastic core body is fixed and sealed to the fixed pin.

[0016] Furthermore, the upper and lower inner walls of the metal front shell are provided with a plurality of second card slots in parallel, and the rear cover is provided with a plurality of corresponding elastic card hooks. The rear cover is inserted into the second card slots one by one by using the elastic card hooks to achieve fixed assembly with the metal front shell.

[0017] Furthermore, the water outlet body is provided with two switchable water outlet waterways, and a water outlet switching valve is provided on the switching waterway to realize the switching of the water outlet waterway.

[0018] Furthermore, the two switchable water outlet passages are separated by a transverse conducting hole; the water outlet switching valve includes a longitudinally arranged water outlet pull rod and a pulling head, the upper end of the water outlet pull rod is fixed to the pulling head, and the lower end of the water outlet pull rod is a transverse plug, and the transverse plug has at least one cross-section slightly larger than the conducting hole area. The longitudinal force on the pulling head drives the water outlet pull rod to move in the longitudinal direction, so that the transverse plug blocks the conducting hole or blocks one of the water outlet passages to realize the switching of the two water outlet passages.

[0019] Furthermore, the end face of the water outlet body close to the metal front shell is designed to be a section that is consistent with the shape of the outer wall of the metal front shell, so that the water outlet body and the metal front shell can be closely fitted.

[0020] Since the patent adopts a plastic water channel (plastic water core) and a metal shell of the faucet, especially the water inlet shells on both sides are integrally formed with the metal front shell during molding, the initial outline of the faucet product is guaranteed at the first time, and the water inlet shell part can be directly assembled with the plastic core body, making the assembly steps particularly simple; secondly, it is only assembled locally (metal front shell + rear cover plate), so that the assembly traces (gaps) become very small, which does not affect the aesthetics and is easy to assemble; thirdly, the faucet shell is designed as a front and back style, and is designed and assembled in the form of a metal front shell plus a rear cover plate, so that the assembly gap of the faucet product is easier to hide, and the assembly gap between the metal front shell that opens backwards and the rear cover plate at the rear can be reasonably hidden behind the product, further ensuring the aesthetics of the product.

[0021] In addition, the design of using quick-plug connectors in many places facilitates quick disassembly and installation when the product or local parts fail, greatly improving the convenience of product use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an exploded schematic diagram of an embodiment of the utility model;

[0023] Figure 2-6 It is a partial explosion schematic diagram of an embodiment of the utility model;

[0024] Figure 7 This is a cross-sectional schematic diagram of the clamping spring of an embodiment of the utility model;

[0025] Figure 8 It is a cross-sectional schematic diagram of an embodiment of the utility model;

[0026] Fig. 9 It is a cross-sectional schematic diagram of the water outlet body of an embodiment of the utility model.

[0027] Attached photos

[0028] 1. Plastic water core; 11. Connecting body; 111. Mixing chamber; 112. Longitudinal ribs; 12. Conducting tube; 121. Through groove; 122. Pin hole; 123. Bump; 13. Circlip; 131. Elastic curved edge; 132. Outward arc; 133. Fixing structure; 14. Arc retaining ring; 141. Card edge; 15. Connecting tube; 151. First card slot; 152. Third card slot; 16. Locking joint; 161. Thread design; 162. Quick plug-in joint; 2. Metal shell; 21. Metal front shell; 211. Accommodating chamber; 212. Assembly hole; 213. Water inlet shell; 214. Block; 215. Gap; 216. Inner ring convex edge; 217. Groove; 218. Second card slot Groove; 22, rear cover; 221, elastic hook; 23, fixed pin; 231, external thread; 232, base; 233, locking nut; 3, plastic core body; 31, valve core cavity; 32, water channel cavity; 321, water outlet hole; 33, water inlet cavity; 34, conical boss; 35, reduced diameter; 36, step edge; 37, sealing ring; 4, switch valve core; 41, valve core seat; 411, external water channel; 412, internal water inlet channel; 42a, 42b, water inlet waterway; 43, handle; 5, water outlet body; 51a, 51b, water outlet waterway; 511, horizontal conduction hole; 52, water outlet switching valve; 521, water outlet pull rod; 522, horizontal plug; 523, pull head; 53, end face. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention. Example

[0030] like Figure 1-9 As shown, an assembled bathtub faucet includes a plastic water core 1 and a metal shell 2: the plastic water core 1 at least includes a connecting body 11 with a mixing chamber 111 and left and right connecting pipes 15, and a locking joint 16, the connecting body 11 also includes a conducting pipe 12 extending outward along the left and right sides of the mixing chamber 111, respectively, and the left and right connecting pipes 15 can be fixedly sealed and disposed in the left and right conducting pipes 12 respectively;

[0031] The metal shell 2 at least includes a metal front shell 21, two left and right water inlet shells 213 connected to both ends of the metal front shell 21, and a rear cover plate 22. In this embodiment, the metal front shell 21 is configured as an arc-shaped metal front shell 21, and the metal front shell 21 forms a containing cavity 211, and an assembly hole 212 is provided at the center of the metal front shell 21;

[0032] The water inlet housing 213 is respectively built with a plastic core body 3. In the present embodiment, the interior of the plastic core body 3 is connected, and the interior includes a valve core cavity 31 with a large inner diameter at the upper part, a water path cavity 32 with a medium inner diameter in the middle part, and a water inlet cavity 33 with a small inner diameter at the lower part; the cavity wall of the water path cavity 32 is provided with a water outlet hole 321, the valve core cavity 31 is equipped with a switch valve core 4, and a valve core seat 41 with an outer diameter matching the water inlet cavity 33, and one end of the valve core seat 41 is sealed and fixed to the plastic core. The water inlet cavity 33 of the core body 3 and the other end thereof are sealed and communicated with the water inlet of the switch valve core 4; the water outlet of the switch valve core 4 is communicated with the water path cavity 32 outside the valve core seat 41 and then communicated with the water outlet hole 321, i.e., the outgoing water channel 411; the communication between the water inlet cavity 33 and the valve core seat 41 is the inner water inlet channel 412, and the inner water inlet channel 412 and the outgoing water channel 411 form a water inlet waterway 42a, 42b that can be closed by the switch valve core 4;

[0033] In this embodiment, one end of the locking joint 16 is a threaded design 161, and the other end is a quick-insert joint 162. The plastic water-passing core 1 is placed in the accommodating cavity 211 of the metal front shell 21, and one end of the threaded design 161 of the locking joint 16 is inserted outward from the assembly hole 212 of the metal front shell 21 and is sealed and screwed into a water outlet body 5 outside the metal front shell 21. Figure 3 As shown, in this embodiment, the end face 53 of the water outlet body 5 close to the metal front shell 21 is designed to be a section consistent with the arc of the metal front shell 21, so that the water outlet body 5 and the metal front shell 21 can achieve a large-area tight fit effect.

[0034] The quick-insert connector 162 at the other end of the locking connector 16 is inserted into the mixing chamber 111 of the plastic water core 1 to achieve sealed fixed conduction; the left and right connecting pipes 15 are respectively sealed and inserted into the water inlet shells 213 at both ends of the metal front shell 21 and fixed to the water outlet holes 321 of their respective plastic core bodies 3, and are connected to the corresponding water inlet waterways 42a and 42b; in this embodiment, the left and right connecting pipes 15 are respectively inserted and fixed to the water outlet holes 321 of their respective plastic core bodies 3 by means of quick-insert connectors 162, and the left and right connecting pipes 15 are respectively provided with third clamping grooves 152 on the outer walls near the water outlet holes 321, which is convenient for clamping the third clamping grooves 152 with external tools, and then it is convenient to apply external force to quickly insert the left and right connecting pipes 15 into their respective water outlet holes 321 for fixing.

[0035] In this embodiment, the upper and lower inner walls of the metal front shell 21 are provided with a plurality of second card slots 218 in parallel, and the rear cover plate 22 is provided with a corresponding plurality of elastic hooks 221. The rear cover plate 22 is fixed to the metal front shell 21 by means of the elastic hooks 221 by snapping into the second card slots 218 one by one, thereby completing the assembly.

[0036] like Figure 5As shown, in this embodiment, the outer walls of one end of the left and right connecting tubes 15 that are in communication with the plastic water-passing core 1 are both provided with a first slot 151; the left and right conducting tubes 12 respectively penetrate two transverse through slots 121 at the positions corresponding to the first slots 151 of the connecting tubes 15, and the through slots 121 penetrate the tube wall of the conducting tube 12 to form four pin holes 122.

[0037] There is a retaining spring 13 on the left and right sides, respectively, and the retaining spring 13 includes elastic curved edges 131 extending on both sides, and the two elastic curved edges 131 respectively form at least a pair of opposite outwardly expanded arcs 132, and the two opposite outwardly expanded arcs 132 form a clamping structure 133; the elastic curved edges 131 on both sides of the retaining spring 13 are respectively inserted into the two transverse through grooves 121 (two pin holes 122) of the corresponding conducting tube 12, and are clamped into the first clamping groove 151 of the connecting tube 15 in the conducting tube 12, such as Figure 7 As shown, the fixing structure 133 is fixed in the first fixing groove 151, thereby fixing the connecting tube 15 in the conducting tube 12 to prevent the connecting tube 15 from axial movement; the through groove 121 provided on the tube wall of the conducting tube 12 is conducive to having sufficient movement space and accommodation position when the retaining ring 13 is inserted.

[0038] In this embodiment, the upper and lower inner walls of the metal front shell 21 corresponding to the left and right conducting tubes 12 are both provided with two blocks 214 arranged in groups, and a gap 215 is provided between each group of two blocks 214; the outer walls of the left and right conducting tubes 12 are each provided with an arcuate retaining ring 14, and the upper and lower portions of the arcuate retaining ring 14 each have a clamping edge 141, and the upper and lower clamping edges 141 of the arcuate retaining ring 14 are respectively clamped in the gap 215 between the upper and lower groups of block blocks 214, so that the plastic water core 1 is clamped in the accommodating cavity 211 of the metal front shell 21, thereby preventing the plastic water core 1 from moving forward and backward. The outer walls of the left and right conducting tubes 12 are provided with a protrusion 123 at a transverse interval at the position of the respective pin holes 122, and the arcuate retaining ring 14 and the upper and lower groups of retaining blocks 214 are arranged at positions corresponding to the intervals. When the upper and lower clamping edges 141 of the arcuate retaining ring 14 are buckled between the retaining blocks 214, the arcuate retaining ring 14 is just engaged between the protrusion 123 and the retaining spring 13, thereby avoiding lateral movement of the arcuate retaining ring 14.

[0039] In this embodiment, a positioning structure is provided between the water inlet housing 213 and the plastic core body 3, so that when the plastic core body 3 is placed in the water inlet housing 213, the water outlet hole 321 thereon just corresponds to the metal front shell 21. Specifically, an inner ring convex edge 216 is provided at the upper end of the water inlet housing 213, and a plurality of grooves 217 are evenly distributed on the inner ring convex edge 216; a boss having the same number as the grooves 217 is provided at a corresponding position on the upper part of the plastic core body 3, and the boss is a conical boss 34. When the plastic core body 3 is placed in the water inlet housing 213, the conical boss 34 thereon is engaged one by one with the grooves 217 of the water inlet housing 213, as shown in FIG. Figure 2As shown, since the conical boss 34 is in a gradually widening shape, the positioning process can achieve both arc direction positioning and longitudinal positioning, ensuring a tight and firm positioning effect.

[0040] In this embodiment, the metal shell 2 is made of zinc alloy, so that the product appearance has the texture and beauty of metal, and has the advantages of low cost and simple process.

[0041] A fixed pin 23 is respectively provided at the bottom of the two water inlet shells 213, and the fixed pin 23 is locked with the bottom of the water inlet shell 213, and each plastic core body 3 is fixed and sealed to the fixed pin 23. In the present embodiment, the upper end of the fixed pin 23 is designed as an external thread 231, which is locked to the bottom of the water inlet shell 213 through the external thread 231; as the fixed pin 23 is screwed to the bottom of the water inlet shell 213, the bottom of the plastic core body 3 is inserted into the fixed pin 23, and the bottom of the plastic core body 3 is designed as a quick-insert connector 162, that is, the sealing is achieved by two sealing rings 37 fixed to the outer wall of the lower end of the plastic core body 3, and the sealing can be achieved by inserting into the fixed pin 23. In the present embodiment, most of the connections adopt this quick-insert connector method, for example; the connection method between the two ends of the connecting pipe 15, one end of the locking connector 16, and the valve core seat 41 and the water inlet cavity 33.

[0042] like Figure 8 The step edge 36 formed by the reduced diameter 35 below the plastic core body 3 is tightly plugged into the fixed pin 23, and the external thread 231 on the upper part of the fixed pin 23 is screwed and fixed with the internal thread of the water inlet shell 213; in addition, the fixed pin 23 is provided with a base 232 and a locking nut 233 for fixing the patented product in the use scene, such as a bathtub or a wash basin.

[0043] In this embodiment, if Fig. 9 As shown, the water outlet body 5 is provided with two switchable water outlet waterways 51a and 51b, and a water outlet switching valve 52 is provided on the switching waterway to realize the switching of the water outlet waterways 51a and 51b. Specifically, the two switchable water outlet waterways 51a and 51b are separated by a transverse conduction hole 511; the water outlet switching valve 52 includes a longitudinally arranged water outlet rod 521 and a lifting head 523, the upper end of the water outlet rod 521 is fixed to the lifting head 523, and the lower end of the water outlet rod 521 is a transverse plug 522, and the transverse plug 522 has at least one cross section slightly larger than the conduction hole area, and the lifting head 523 is longitudinally subjected to force to drive the water outlet rod 521 to move in the longitudinal direction, so that the transverse plug 522 blocks the conduction hole or blocks one of the water outlet waterways to realize the switching of the two water outlet waterways 51a and 51b.

[0044] In actual use, the external cold and hot water pipes are fixedly connected and conducted with the left and right fixed pins 23 of the present invention, respectively, and the cold and hot water flow into their respective water inlet paths 42a and 42b, and flow into the switch valve core 4 from the valve core seat 41 of the water inlet cavity 33, and then flow into the water path cavity 32 when the switch valve core 4 is opened (the switch is realized by the handle 43), and then flow into the connecting pipe 15 communicated with it from the corresponding water outlet hole 321, and the mixing of cold and hot water is realized in the mixing cavity 111 of the plastic water core 1. In this embodiment, the mixing cavity 111 is provided in the middle A longitudinal rib 112 produces a blocking effect at the mixing point of cold and hot water, which can effectively prevent the impact of cold water or hot water when one side has a higher pressure, thereby ensuring that the cold and hot water are mixed more evenly; the evenly mixed warm water further flows out through the water outlet body 5 conducted by the mixing chamber 111. During use, the two water outlet waterways 51a and 51b can be switched by pulling up or pressing down the pulling head 523. In general embodiments, two water outlet waterways 51a and 51b are often set as shower water outlet and bathtub water outlet.

[0045] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An assembled bathtub faucet, comprising a plastic water core and a metal shell, characterized in that: The plastic water-passing core at least comprises a connecting body with a mixing chamber, two left and right connecting pipes, and a locking joint, wherein the connecting body comprises conducting pipes extending outward along the left and right sides of the mixing chamber, respectively, and the left and right connecting pipes can be fixedly sealed and arranged in the left and right conducting pipes, respectively; The metal shell at least comprises a metal front shell, two left and right water inlet shells connected to the two ends of the metal front shell, and a rear cover plate, the metal front shell forms a containing cavity, and a mounting hole is arranged at the center of the metal front shell; Each of the water inlet housings has a plastic core body built in, the interior of the plastic core body is through, and the side wall of the plastic core body is provided with a water outlet hole facing in a direction corresponding to the metal front shell; each of the plastic core bodies is provided with a switch valve core and a valve core seat, forming a water inlet waterway that can be closed inside the plastic core body; The plastic water-passing core is placed in the accommodating cavity of the metal front shell, one end of the locking joint is inserted outward from the assembly hole of the metal front shell and sealed and locked to a water outlet body outside the metal front shell; the other end of the locking joint is sealed and fixed to the mixing cavity of the plastic water-passing core; the left and right connecting pipes are respectively sealed and inserted into the water inlet shells at both ends of the metal front shell and fixed to the water outlet holes of their respective plastic core bodies, and are connected to the corresponding water inlet waterways; the rear cover plate is further fixed to the rear of the metal front shell to complete the assembly.

2. The assembled bathtub faucet according to claim 1, characterized in that: The outer walls of one end of the left and right connecting tubes that are in communication with the plastic water-passing core are both provided with a first clamping groove, and the outer walls of the left and right conducting tubes are both provided with at least two pin holes at positions corresponding to the first clamping grooves of the connecting tubes; there is a retaining spring on the left and right sides respectively, and the retaining spring includes elastic curved edges extending on both sides, and the two elastic curved edges respectively form at least a pair of opposite outward-expanding arcs, and the two opposite outward-expanding arcs form a clamping structure; the elastic curved edges on both sides of the retaining spring are respectively inserted into the two pin holes of the corresponding conducting tube, and are clamped into the first clamping groove of the connecting tube in the conducting tube, and the clamping structure fixes the connecting tube in the conducting tube to prevent the connecting tube from axial movement.

3. The assembled bathtub faucet according to claim 2, characterized in that: The left and right conducting tubes respectively penetrate two transverse through slots at positions corresponding to the first slots of the connecting tubes. The through slots penetrate the tube walls of the conducting tubes to form four pin holes, which are conducive to the clamping of the retaining spring with sufficient movement space and accommodation position.

4. The assembled bathtub faucet according to claim 2, characterized in that: The upper and lower inner walls of the metal front shell corresponding to the left and right conducting tubes are both provided with two blocks in a group, and a gap is provided between the two blocks in a group; the outer walls of the left and right conducting tubes are respectively provided with an arc-shaped retaining ring, and the upper and lower parts of the arc-shaped retaining ring are respectively provided with a clamping edge, and the upper and lower clamping edges of the arc-shaped retaining ring are respectively clamped in the gap between the upper and lower groups of block blocks, so that the plastic water core is clamped in the accommodating cavity of the metal front shell, thereby avoiding the plastic water core from moving forward and backward.

5. The assembled bathtub faucet according to claim 4, characterized in that: The outer walls of the left and right conducting tubes are provided with a protrusion at a horizontal interval at the position of each pin hole, and the arc-shaped retaining ring and the upper and lower groups of retaining blocks are arranged at positions corresponding to the interval. When the upper and lower clamping edges of the arc-shaped retaining ring are buckled between the retaining blocks, the arc-shaped retaining ring is just clamped between the protrusion and the retaining spring, thereby avoiding lateral movement of the arc-shaped retaining ring.

6. The assembled bathtub faucet according to claim 1, characterized in that: The interior of the plastic core body is connected, and the interior includes a valve core cavity with a large inner diameter at the top, a water path cavity with a medium inner diameter in the middle, and a water inlet cavity with a small inner diameter at the bottom; the wall of the water path cavity is provided with a water outlet hole, the valve core cavity is equipped with a switch valve core, and the outer diameter of a valve core seat matches the water inlet cavity, one end of the valve core seat is sealed and fixed to the water inlet cavity of the plastic core body, and the other end is sealed and connected to the water inlet of the switch valve core; the water outlet of the switch valve core is connected to the water path cavity outside the valve core seat and then to the water outlet hole, which is the external water channel; the connection between the water inlet cavity and the valve core seat is the internal water inlet channel.

7. The assembled bathtub faucet according to claim 1, characterized in that: A positioning structure is arranged between the water inlet housing and the plastic core body, so that when the plastic core body is placed into the water inlet housing, the water outlet hole on the plastic core body is just corresponding to the metal front shell.

8. The assembled bathtub faucet according to claim 7, characterized in that: The positioning structure is designed to provide an inner ring convex edge at the upper end of the water inlet shell, and a number of grooves are evenly distributed on the inner ring convex edge; corresponding positions on the upper part of the plastic core body are provided with bosses with the same number of grooves. When the plastic core body is placed in the water inlet shell, the bosses on it are engaged one by one with the grooves of the water inlet shell to achieve positioning.

9. The assembled bathtub faucet according to claim 1, characterized in that: A fixed pin is respectively arranged below the two water inlet housings, and the fixed pin is locked with the bottom of the water inlet housing. The bottom of each plastic core body is fixed and sealed to the fixed pin.

10. The assembled bathtub faucet according to claim 1, characterized in that: The upper and lower inner walls of the metal front shell are provided with a plurality of second card slots in parallel, and the rear cover is provided with a plurality of corresponding elastic card hooks. The rear cover is inserted into the second card slots one by one by using the elastic card hooks to realize fixed assembly with the metal front shell.

11. The assembled bathtub faucet according to claim 1, characterized in that: The water outlet main body is provided with two switchable water outlet waterways, and a water outlet switching valve is provided on the switching waterway to realize the switching of the water outlet waterway.

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