Salt box and water softener

Abstract

The utility model discloses a salt box and a water softener, and belongs to the technical field of water purification equipment, the salt box comprises a box body and a wire harness telescopic structure arranged in the box body, the box body is provided with a threading port, the wire harness telescopic structure comprises a shell, a rolling wheel, an elastic piece and a locking ball, and the shell is provided with a containing cavity and a wire outlet communicated with the containing cavity; the winding wheel is arranged in the containing cavity and used for winding a wire harness, one end of the wire harness extends out of the wire outlet and the wire penetrating opening, a guide sliding way is arranged at one axial end of the winding wheel, and the guide sliding way surrounds the axis of the winding wheel. The elastic piece is connected with the rolling wheel and can generate elastic deformation when the wire harness is pulled out; a limiting sliding way extending in the radial direction of the rolling wheel is formed in the shell, and the locking ball is movably arranged in a limiting space defined by the guiding sliding way and the limiting sliding way so as to lock or unlock the rolling wheel. The water softener comprises a main machine and the salt box, and one end, extending out of the threading opening, of the wire harness is connected with the main machine. The exposed length of the wire harness can be adjusted according to requirements, and extrusion and dragging are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification equipment, in particular to a salt box and a water softener. Background Art

[0002] A water softener is a household appliance that softens hard tap water, improving the quality of household water. It works by exchanging sodium cations with calcium and magnesium ions in tap water through an exchange resin, thereby absorbing excess calcium and magnesium ions and softening the water.

[0003] During the use of a water softener, the sodium ions in the resin displace the calcium and magnesium ions in the water. When the softened water volume reaches its maximum during the cycle, the calcium and magnesium ions on the resin reach saturation. At this time, regeneration salt is needed to regenerate the resin to restore its softening capacity. The water softener requires the use of regeneration salt as a consumable to restore the resin's softening capacity. Therefore, regeneration salt needs to be added regularly during the use of the water softener.

[0004] To ensure users are aware of salt shortages in the salt tank and prompt them to add salt, related technologies employ sensors to provide prompts when the salt tank is low. During installation, the salt tank is connected to the main unit via a wiring harness, which is electrically connected to the sensor to transmit data to the main unit. Excess wiring is either tied with cable ties or left exposed outside the salt tank. This not only affects the cleanliness and aesthetics, but can also cause the wiring harness to be squeezed or pulled when the salt tank is moved to add salt, leading to wiring harness failure. Utility Model Content

[0005] The purpose of the utility model is to provide a salt box and a water softener to solve the technical problem in the prior art that the wire harness of the salt box is exposed and has nowhere to be placed.

[0006] As conceived above, the technical solution adopted by the utility model is:

[0007] A salt box includes a box body and a wire harness telescopic structure arranged in the box body, wherein the box body is provided with a wire threading port, and the wire harness telescopic structure includes:

[0008] The housing has a receiving cavity and a wire outlet communicating with the receiving cavity;

[0009] A reel is disposed in the accommodating cavity and is used to wind the wire harness, one end of the wire harness extends from the wire outlet and the wire threading port, and a guide slide is provided at one axial end of the reel, the guide slide being arranged around the axis of the reel;

[0010] an elastic member connected to the reel and capable of elastically deforming when the wire harness is pulled out;

[0011] A locking ball is provided on the outer shell and is provided with a limiting slide extending radially along the reel. The locking ball is movably arranged in a limiting space enclosed by the guide slide and the limiting slide to lock or unlock the reel.

[0012] Preferably, the wire harness telescopic structure also includes a support shaft, which is fixedly arranged in the accommodating cavity, the elastic member is a coil spring and is sleeved on the support shaft, the inner end of the coil spring is fixedly connected to the support shaft, the reel is sleeved on the coil spring, and the outer end of the coil spring is fixedly connected to the reel.

[0013] Preferably, the guide slideway comprises an inner annular slideway and an outer annular slideway which are concentrically arranged and communicated with each other, and the locking ball can slide along the outer annular slideway or the inner annular slideway;

[0014] The guide slide also includes a locking groove arranged between the inner annular slide and the outer annular slide. The locking ball can slide in a circular motion along the outer annular slide, the locking groove to the inner annular slide. When the locking ball is located in the locking groove, the reel is locked.

[0015] Preferably, the entrance of the locking groove faces the outer annular slide, and a first guide protrusion is provided on one side of the entrance in the outer annular slide, and the first guide protrusion gradually approaches the locking groove in the counterclockwise direction; when the locking ball is located in the outer annular slide, when the reel rotates counterclockwise, the locking ball slides over the first guide protrusion and slides in the outer annular slide, and when the reel rotates clockwise, the first guide protrusion guides the locking ball to slide from the entrance into the locking groove.

[0016] Preferably, a second guide protrusion is provided on one side of the locking groove close to the inner annular slide, and the second guide protrusion gradually approaches the inner annular slide in a clockwise direction; when the locking ball is located in the locking groove, the second guide protrusion guides the locking ball to slide into the inner annular slide when the reel rotates counterclockwise.

[0017] Preferably, both sides of the locking groove are provided with limiting convex edges, and the locking ball slides over one of the limiting convex edges when sliding from the locking groove into the inner annular slideway.

[0018] Preferably, the guide slide also includes a guide port, one end of which is connected to the inner annular slide, and the other end of which is connected to the outer annular slide. From the inner annular slide to the outer annular slide, the guide port extends in a clockwise direction.

[0019] Preferably, it further includes a first sensor and a conductive member, wherein the conductive member is fixed to the reel, the first sensor is arranged outside the housing and electrically connected to the conductive member, and the end of the wiring harness away from the outlet is electrically connected to the conductive member.

[0020] Preferably, the conductive member includes two concentrically arranged metal rings, the first sensor has two first terminals, and each first terminal abuts against one of the metal rings.

[0021] A water softener comprises a main unit and the above-mentioned salt tank, wherein one end of the wiring harness extending out of the wiring hole is connected to the main unit.

[0022] Beneficial effects of the utility model:

[0023] The salt box proposed by the utility model has a locking ball movably arranged in a limited space surrounded by a guide slide and a limit slide to lock or unlock the reel. When the reel is unlocked, the wiring harness can be pulled out under the action of an external force, or retracted under the action of an elastic member. When the wiring harness is pulled out from the threading port on the box body, the wiring harness drives the reel to rotate, causing the elastic member to elastically deform and store energy; when the reel is locked, the wiring harness can stop at the current position, and then the exposed length of the wiring harness can be adjusted according to needs, and the excess wiring harness remains in the outer shell of the wiring harness telescopic structure, and the wiring harness is not exposed; when the salt box is moved to add salt, the wiring harness can be freely extended and retracted following the push and pull of the salt box, avoiding squeezing and pulling of the wiring harness, and reducing the failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a salt box provided by an embodiment of the present utility model;

[0025] Figure 2 is a cross-sectional view of a salt box provided by an embodiment of the present utility model;

[0026] Figure 3 This is a schematic structural diagram of the wiring harness telescopic structure and the first sensor provided by an embodiment of the present utility model;

[0027] Figure 4 is a cross-sectional view of a wiring harness telescopic structure provided by an embodiment of the present utility model;

[0028] Figure 5 This is a schematic structural diagram of a reel and an elastic member provided in an embodiment of the present utility model;

[0029] Figure 6 This is a partial structural diagram of a housing provided by an embodiment of the present utility model;

[0030] Figure 7 This is a partial structural diagram of the wiring harness telescopic structure provided by the embodiment of the utility model Figure 1 ;

[0031] Figure 8 This is a schematic diagram of the guide slide provided by the embodiment of the utility model Figure 1 ;

[0032] Figure 9 This is a partial structural diagram of the wiring harness telescopic structure provided by the embodiment of the utility model Figure 2 ;

[0033] Figure 10 This is a schematic diagram of the guide slide provided by the embodiment of the utility model Figure 2 ;

[0034] Figure 11 It is a partial structural diagram of the wiring harness telescopic structure and the first sensor provided in an embodiment of the present utility model.

[0035] In the picture:

[0036] 10. Box body; 101. Threading port; 11. Upper box body; 12. Lower box body; 13. Partition;

[0037] 20. Wire harness telescopic structure; 21. Housing; 201. Wire outlet; 202. Position limiting slide; 211. First housing; 212. Second housing; 22. Reel; 221. Guide slide; 2211. Inner annular slide; 2212. Outer annular slide; 2213. Locking groove; 2214. First guide protrusion; 2215. Second guide protrusion; 2216. Position limiting flange; 2217. Guide opening; 2218. Third guide protrusion; 23. Elastic member; 24. Locking ball; 25. Wire harness; 26. Support shaft;

[0038] 30. First sensor; 31. First terminal;

[0039] 40. Conductive parts. DETAILED DESCRIPTION

[0040] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0044] See also Figures 1 to 11 The utility model provides a salt box, comprising a box body 10 and a wire harness telescopic structure 20 arranged in the box body 10, the box body 10 is provided with a threading port 101, the wire harness telescopic structure 20 comprises a shell 21, a reel 22, an elastic member 23 and a locking ball 24, the shell 21 has a receiving cavity and a wire outlet 201 communicating with the receiving cavity, the reel 22 is arranged in the receiving cavity and is used to wind the wire harness 25, one end of the wire harness 25 is connected to the wire outlet 201 and the threading port 101 extends out, and a guide slide 221 is provided at one axial end of the reel 22, and the guide slide 221 surrounds the axis of the reel 22; the elastic member 23 is connected to the reel 22 and can be elastically deformed when the wiring harness 25 is pulled out; a limiting slide 202 extending along the radial direction of the reel 22 is provided on the housing 21, and a locking ball 24 is movably arranged in a limiting space surrounded by the guide slide 221 and the limiting slide 202 to lock or unlock the reel 22.

[0045] When the reel 22 is unlocked, the wiring harness 25 can be pulled out under the action of external force, or retracted under the action of the elastic member 23. When the wiring harness 25 is pulled out from the wire threading port 101 on the box body 10, the wiring harness 25 drives the reel 22 to rotate, causing the elastic member 23 to elastically deform and store energy; when the reel 22 is locked, the wiring harness 25 can stop at the current position, and then the exposed length of the wiring harness 25 can be adjusted according to needs. The excess wiring harness 25 remains in the outer shell 21 of the wiring harness telescopic structure 20, and the wiring harness 25 is not exposed; when the salt box is moved to add salt, the wiring harness 25 can be freely extended and retracted following the push and pull of the salt box, avoiding squeezing and pulling of the wiring harness 25, and reducing the failure rate.

[0046] The reel 22 can rotate around its own axis. The end of the reel 22 can be rotatably connected to the housing 21, and the elastic member 23 is arranged between the reel 22 and the housing 21. The elastic member 23 can be a torsion spring. Alternatively, the wire harness telescopic structure 20 also includes a support shaft 26, which is fixedly arranged in the accommodating cavity. The elastic member 23 is a coil spring and is sleeved on the support shaft 26. The inner end of the coil spring is fixedly connected to the support shaft 26. The reel 22 is sleeved on the coil spring, and the outer end of the coil spring is fixedly connected to the reel 22. When the wire harness is pulled out under the action of external force, the wire harness 25 drives the reel 22 to rotate around its own axis, and the reel 22 drives the coil spring to elastically deform and store energy.

[0047] Specifically, the housing 21 includes a first shell 211 and a second shell 212 that are removably connected to each other. The first shell 211 and the second shell 212 are joined to form a housing for accommodating the coil spring, reel 22, wiring harness 25, and locking ball 24. The wire outlet 201 is provided in the first shell 211, and the limiting slide 202 is provided in the second shell 212.

[0048] The salt box in this embodiment is a split structure. The box body 10 comprises an upper box body 11 and a lower box body 12 that interlock with each other. A partition 13 is provided at the bottom of the upper box body 11, and the wiring harness telescoping structure 20 is connected to the partition 13. The lower box body 12 is provided with a wire threading port 101. Specifically, the outer shell 21 is provided with mounting ears, which are connected to the partition 13.

[0049] Among them, the locking ball 24 is movably arranged in the limited space surrounded by the guide slide 221 and the limit slide 202. It can be that half of the locking ball 24 is located in the guide slide 221, and the other half of the locking ball 24 is located in the limit slide 202. The limit slide 202 limits the locking ball 24 along the radial direction of the reel 22. As the reel 22 rotates, under the joint action of the limit slide 202 and the guide slide 221, the locking ball 24 slides in the guide channel.

[0050] The guide slide 221 includes an inner annular slide 2211 and an outer annular slide 2212 which are concentrically arranged and interconnected. The locking ball 24 can slide along the outer annular slide 2212 or the inner annular slide 2211; the guide slide 221 also includes a locking groove 2213 arranged between the inner annular slide 2211 and the outer annular slide 2212. The locking ball 24 can slide in a circular motion along the direction of the outer annular slide 2212, the locking groove 2213 to the inner annular slide 2211. When the locking ball 24 is located in the locking groove 2213, the reel 22 is locked.

[0051] In this embodiment, pulling the wire harness 25 outward causes the reel 22 to rotate counterclockwise, storing energy in the elastic member 23. When the locking ball 24 is located in the locking groove 2213, the elastic member 23 causes the reel 22 to rotate clockwise, causing the locking ball 24 to abut against the inner wall of the locking groove 2213, thereby locking the reel.

[0052] When the locking ball 24 is located in the locking groove 2213, the wiring harness 25 is pulled outward to drive the reel 22 to rotate counterclockwise, and the locking ball 24 slides from the locking groove 2213 into the inner annular slide 2211; as the wiring harness 25 continues to be pulled outward, the reel 22 continues to rotate counterclockwise, and the locking ball 24 slides from the inner annular slide 2211 into the outer annular slide 2212; as the wiring harness 25 continues to be pulled outward, the reel 22 continues to rotate counterclockwise, and the locking ball 24 slides along the outer annular slide 2212.

[0053] When the locking ball 24 is located in the outer annular slide 2212 and the wiring harness 25 is released, the reel 22 rotates clockwise under the action of the elastic member 23, and the locking ball 24 slides from the outer annular slide 2212 into the locking groove 2213. Since the reel 22 has a tendency to rotate clockwise under the action of the elastic member 23, the locking ball 24 is pressed against the inner wall of the locking groove 2213 to achieve locking.

[0054] Therefore, when the locking ball 24 is located in the locking groove 2213, pulling the wire harness 25 outward can drive the wire harness 25 to extend. After loosening the wire harness 25, under the action of the elastic member 23, the locking ball 24 locks the reel 22, and the length of the wire harness 25 is locked.

[0055] When the locking ball 24 is located in the locking groove 2213, the wiring harness 25 is gently pulled and then released, driving the reel 22 to rotate counterclockwise instantly. The locking ball 24 slides from the locking groove 2213 into the inner annular slide 2211. Under the action of the elastic member 23, the reel 22 rotates clockwise, the locking ball 24 slides along the inner annular slide 2211, and the wiring harness 25 is retracted.

[0056] When the locking ball 24 is located in the inner annular slide 2211, lightly pull the wire harness 25 to drive the reel 22 to rotate counterclockwise, and the locking ball 24 slides from the inner annular slide 2211 into the outer annular slide 2212. After loosening the wire harness 25, under the action of the elastic member 23, the reel 22 rotates clockwise, and the locking ball 24 slides from the outer annular slide 2212 into the locking groove 2213 to achieve locking.

[0057] Therefore, when the locking ball 24 is located in the locking groove 2213, the wire harness 25 is gently pulled and then released, so that the wire harness 25 can be retracted. When the wire harness 25 is retracted to a certain length, the wire harness 25 is gently pulled again to drive the locking ball 24 to slide into the outer annular slide 2212, and the wire harness 25 is released. The locking ball 24 slides from the outer annular slide 2212 into the locking groove 2213, and the length of the wire harness 25 is locked.

[0058] In order to facilitate the locking ball 24 to enter the locking groove 2213 from the outer annular slide 2212, the entrance of the locking groove 2213 faces the outer annular slide 2212, and a first guide protrusion 2214 is provided on one side of the entrance in the outer annular slide 2212. In the counterclockwise direction, the first guide protrusion 2214 gradually approaches the locking groove 2213; when the locking ball 24 is located in the outer annular slide 2212, when the reel 22 rotates counterclockwise, the locking ball 24 slides over the first guide protrusion 2214 and slides in the outer annular slide 2212. When the reel 22 rotates clockwise, the first guide protrusion 2214 guides the locking ball 24 to slide from the entrance into the locking groove 2213.

[0059] When the locking ball 24 is within the outer annular slideway 2212, continuously pulling the wiring harness 25 outward causes the reel 22 to rotate counterclockwise. With each rotation of the reel 22, the locking ball 24 slides past the first guide protrusion 2214. Optionally, the locking ball 24 and the first guide protrusion 2214 cooperate to produce a "clicking" sound when the wiring harness 25 is pulled outward. After releasing the wiring harness 25, the reel 22 rotates clockwise under the action of the elastic member 23, causing the locking ball 24 to strike the first guide protrusion 2214, which then guides the locking ball 24 into the locking groove 2213.

[0060] In order to facilitate the locking ball 24 to enter the inner annular slide 2211 from the locking groove 2213, a second guide protrusion 2215 is provided on the side of the locking groove 2213 close to the inner annular slide 2211. In the clockwise direction, the second guide protrusion 2215 gradually approaches the inner annular slide 2211; when the locking ball 24 is located in the locking groove 2213, when the reel 22 rotates counterclockwise, the second guide protrusion 2215 guides the locking ball 24 to slide into the inner annular slide 2211.

[0061] When the locking ball 24 is located in the locking groove 2213, pulling the wire harness 25 outward causes the reel 22 to rotate counterclockwise, which is equivalent to the locking ball 24 sliding clockwise relative to the guide slide 221. As the second guide protrusion 2215 gradually approaches the inner annular slide 2211 in the clockwise direction, it can guide the locking ball 24 from the locking groove 2213 into the inner annular slide 2211. When the locking ball 24 is located in the inner annular slide 2211, the wire harness 25 is released. Under the action of the elastic member 23, the reel 22 rotates clockwise, and the locking ball 24 slides along the inner annular slide 2211, realizing the retraction of the wire harness 25.

[0062] A limiting flange 2216 is provided on both sides of the locking groove 2213 to limit the locking ball 24 within the locking groove 2213, preventing the locking ball 24 from arbitrarily entering the outer annular slideway 2212 or the inner annular slideway 2211. When the locking ball 24 slides from the locking groove 2213 into the inner annular slideway 2211, it slides over one of the limiting flanges 2216. That is, when the locking ball 24 is within the locking groove 2213 and the wire harness 25 is pulled outward to rotate the reel 22 counterclockwise, a certain amount of force must be applied to allow the locking ball 24 to slide over the limiting flange 2216 and enter the inner annular slideway 2211. This prevents the wire harness 25 from rebounding due to accidental pulling.

[0063] The inner annular slide 2211 and the outer annular slide 2212 are connected to each other in order to prevent the locking ball 24 from sliding from the inner annular slide 2211 into the outer annular slide 2212. Specifically, the guide slide 221 also includes a guide opening 2217, one end of the guide opening 2217 is connected to the inner annular slide 2211, and the other end of the guide opening 2217 is connected to the outer annular slide 2212. From the inner annular slide 2211 to the outer annular slide 2212, the guide opening 2217 extends in a clockwise direction.

[0064] When the locking ball 24 is located within the inner annular slideway 2211, pulling the harness 25 outward causes the reel 22 to rotate counterclockwise, causing the locking ball 24 to slide through the guide opening 2217 and into the outer annular slideway 2212. When the locking ball 24 is located within the inner annular slideway 2211 and the harness 25 is released, the reel 22 rotates clockwise under the action of the elastic member 23, causing the locking ball 24 to slide along the inner annular slideway 2211 and prevent the locking ball 24 from sliding into the guide opening 2217. Specifically, the guide opening 2217 and the locking groove 2213 are spaced apart so that they do not interfere with each other.

[0065] In order to facilitate the locking ball 24 to slide from the inner annular slide 2211 into the outer annular slide 2212, a third guide protrusion 2218 is provided on one side of the guide opening 2217 in the inner annular slide 2211. When the locking ball 24 is located in the inner annular slide 2211, when the reel 22 rotates counterclockwise, the locking ball 24 slides over the third guide protrusion 2218 and slides in the inner annular slide 2211. When the reel 22 rotates counterclockwise, the locking ball 24 collides with the third guide protrusion 2218 and slides into the outer annular slide 2212 through the guide opening 2217 under the guidance of the third guide protrusion 2218.

[0066] The salt tank also includes a first sensor 30 and a conductive member 40. The conductive member 40 is fixed to the reel 22. The first sensor 30 is disposed outside the housing 21 and is electrically connected to the conductive member 40. The end of the wiring harness 25 away from the cable outlet 201 is electrically connected to the conductive member 40. Data acquired by the first sensor 30 can be transmitted externally through the conductive member 40 and the wiring harness 25. Because the reel 22 rotates when the wiring harness 25 is extended or retracted, the wiring harness 25 is wound around the reel 22 and rotates with the reel 22. The conductive member 40 is fixed to the reel 22 to prevent the rotation of the wiring harness 25 from affecting the electrical connection between the wiring harness 25 and the conductive member 40.

[0067] In this embodiment, the conductive member 40 comprises two concentrically arranged metal rings, and the first sensor 30 has two first terminals 31, each electrically connected to one of the metal rings. The metal rings rotate with the reel 22. Because the first terminals 31 abut against the metal rings, they maintain a stable electrical connection and do not rotate with the rings, ensuring a stable connection between the first sensor 30 and the conductive member 40. The end of the wiring harness 25 distal from the cable outlet 201 has two second terminals, each electrically connected to one of the metal rings. Specifically, the first sensor 30 can be an existing liquid level sensor, used to detect the liquid level within the salt tank. When the liquid level falls below a first set value, the alarm module issues a first alert.

[0068] This embodiment further provides a water softener, comprising a main unit and the above-mentioned salt tank, wherein one end of the wiring harness 25 extending from the wire threading port 101 is connected to the main unit.

[0069] When installing the main unit and the salt box, the wire harness 25 is pulled outward to an appropriate length, and then released. The wire harness 25 is locked and cannot be retracted. The wire harness 25 is pulled out to facilitate adjustment of the distance between the salt box and the main unit. In the specific process, the locking ball 24 is located in the locking groove 2213. Pulling the wire harness 25 outward drives the reel 22 to rotate counterclockwise, and the locking ball 24 slides from the locking groove 2213 into the inner annular slide 2211; as the wire harness 25 is further pulled outward, the reel 22 continues to rotate counterclockwise, and the locking ball 24 slides from the inner annular slide 2211 into the outer annular slide 2212; as the wire harness 25 is further pulled outward, the reel 22 continues to rotate counterclockwise, and the locking ball 24 slides along the outer annular slide 2212. When the wire harness 25 is pulled out to an appropriate length and released, the reel 22 rotates clockwise under the action of the elastic member 23 , and the locking ball 24 slides from the outer annular slideway 2212 into the locking groove 2213 to achieve locking.

[0070] After installation is complete, the salt box is moved to the desired position. At this point, part of the wire harness 25 is exposed. The wire harness 25 is slightly pulled outward to release it, and the wire harness 25 is reeled back into the housing 21. After the wire harness 25 is reeled, the wire harness 25 is pulled outward again and released, locking the wire harness 25 and preventing it from being retracted. Specifically, the locking ball 24 is located within the locking groove 2213. After the wire harness 25 is slightly pulled outward, the locking ball 24 slides into the inner annular slideway 2211. After the wire harness 25 is released, the reel 22 rotates clockwise under the action of the elastic member 23, and the locking ball 24 slides along the inner annular slideway 2211 until the wire harness 25 is tightened, and the exposed wire harness 25 is reeled back into the housing 21. The wire harness 25 is then pulled outward and released, and the locking ball 24 slides from the inner annular slideway 2211 into the outer annular slideway 2212 and then into the locking groove 2213 .

[0071] When the salt box needs to be added to the salt box, the salt box is pulled away from the main unit to pull out the wire harness 25. When the wire harness 25 is pulled out to the appropriate length, the wire harness 25 is released, and the wire harness 25 is locked and cannot be retracted, making it easier to add salt to the salt box. After the salt is added, the salt box is moved to the desired position. At this time, part of the wire harness 25 is exposed. The wire harness 25 is slightly pulled outward to release the wire harness 25, and the wire harness 25 is reeled back into the housing 21. After the wire harness 25 is reeled, the wire harness 25 is pulled outward again and released, and the wire harness 25 is locked and cannot be retracted.

[0072] The above embodiments merely illustrate the basic principles and features of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications are possible without departing from the spirit and scope of the present invention. Such changes and modifications are within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A salt box, characterized in that: The invention comprises a box body (10) and a wire harness telescopic structure (20) arranged in the box body (10), wherein the box body (10) is provided with a wire threading opening (101), and the wire harness telescopic structure (20) comprises: A housing (21) having a receiving cavity and a wire outlet (201) communicating with the receiving cavity; A reel (22) is disposed in the accommodating cavity and is used for winding a wire harness (25), one end of the wire harness (25) extending from the wire outlet (201) and the wire threading port (101), and a guide slideway (221) is provided at one axial end of the reel (22), the guide slideway (221) being arranged around the axis of the reel (22); an elastic member (23) connected to the reel (22) and capable of elastically deforming when the wire harness (25) is pulled out; A locking ball (24) is provided on the housing (21) with a limiting slideway (202) extending radially along the reel (22). The locking ball (24) is movably arranged in a limiting space enclosed by the guide slideway (221) and the limiting slideway (202) to lock or unlock the reel (22).

2. The salt box according to claim 1, characterized in that The wire harness telescopic structure (20) further includes a support shaft (26), the support shaft (26) being fixedly disposed in the accommodating cavity, the elastic member (23) being a coil spring and being sleeved on the support shaft (26), the inner end of the coil spring being fixedly connected to the support shaft (26), the reel (22) being sleeved on the coil spring, and the outer end of the coil spring being fixedly connected to the reel (22).

3. The salt box according to claim 1, characterized in that The guide slideway (221) comprises an inner annular slideway (2211) and an outer annular slideway (2212) which are concentrically arranged and communicate with each other, and the locking ball (24) can slide along the outer annular slideway (2212) or the inner annular slideway (2211); The guide slide (221) also includes a locking groove (2213) arranged between the inner annular slide (2211) and the outer annular slide (2212), and the locking ball (24) can slide cyclically along the direction of the outer annular slide (2212), the locking groove (2213) to the inner annular slide (2211). When the locking ball (24) is located in the locking groove (2213), the reel (22) is locked.

4. The salt box according to claim 3, characterized in that The entrance of the locking groove (2213) faces the outer annular slide (2212), and a first guide protrusion (2214) is provided on one side of the entrance in the outer annular slide (2212). In the counterclockwise direction, the first guide protrusion (2214) gradually approaches the locking groove (2213); when the locking ball (24) is located in the outer annular slide (2212), when the reel (22) rotates counterclockwise, the locking ball (24) slides over the first guide protrusion (2214) and slides in the outer annular slide (2212); when the reel (22) rotates clockwise, the first guide protrusion (2214) guides the locking ball (24) to slide from the entrance into the locking groove (2213).

5. The salt box according to claim 3, characterized in that: A second guide protrusion (2215) is provided on one side of the locking groove (2213) close to the inner annular slide (2211), and the second guide protrusion (2215) gradually approaches the inner annular slide (2211) in a clockwise direction; when the locking ball (24) is located in the locking groove (2213), the second guide protrusion (2215) guides the locking ball (24) to slide into the inner annular slide (2211) when the reel (22) rotates counterclockwise.

6. The salt box according to claim 5, characterized in that Both sides of the locking groove (2213) are provided with limiting convex edges (2216), and the locking ball (24) slides over one of the limiting convex edges (2216) when sliding from the locking groove (2213) into the inner annular slideway (2211).

7. The salt box according to claim 3, characterized in that The guide slide (221) further includes a guide opening (2217), one end of the guide opening (2217) is connected to the inner annular slide (2211), and the other end of the guide opening (2217) is connected to the outer annular slide (2212), and the guide opening (2217) extends in a clockwise direction from the inner annular slide (2211) to the outer annular slide (2212).

8. The salt box according to any one of claims 1 to 7, characterized in that: The invention also includes a first sensor (30) and a conductive member (40), wherein the conductive member (40) is fixedly arranged on the reel (22), the first sensor (30) is arranged outside the housing (21) and is electrically connected to the conductive member (40), and the end of the wiring harness (25) away from the wiring outlet (201) is electrically connected to the conductive member (40).

9. The salt box according to claim 8, characterized in that The conductive member (40) comprises two concentrically arranged metal rings, and the first sensor (30) has two first terminals (31), each of the first terminals (31) abutting against one of the metal rings.

10. A water softener, characterized in that: It comprises a host and the salt box according to any one of claims 1 to 9, wherein one end of the wiring harness (25) extending out of the wire threading port (101) is connected to the host.

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