Junction box and household appliance

Abstract

The utility model discloses a junction box and a household electrical appliance, and belongs to the technical field of electrical equipment. The junction box comprises a box body, at least one rubber sleeve and at least one tightening piece, the box body is provided with an accommodating cavity, and the box body is provided with at least one connecting hole communicated with the accommodating cavity; the at least one rubber sleeve is mounted in the at least one connecting hole in a one-to-one correspondence manner; the rubber sleeve is provided with a wire passing channel for a wire to penetrate into the accommodating cavity; the at least one tightening piece sleeves the at least one rubber sleeve in a one-to-one correspondence manner, and the tightening piece can narrow the wire passing channel, so that at least part of the inner wall of the wire passing channel is attached to the electric wire. According to the utility model, the sealing performance of the junction box is obviously enhanced, water vapor, condensation and leaked refrigerants are effectively prevented from entering the accommodating cavity, the safety of the junction box is improved, the protection capability for electronic components in the accommodating cavity is enhanced, and the possibility of damage to the electronic components is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a junction box and a household appliance. Background Art

[0002] In the related art, in order to balance the safety protection of the electrical control components and the convenience of cable management, these components are usually integrally encapsulated inside the junction box, and the electrical control components are connected to other functional components through wires passing through the wire passing channels of the junction box. However, the existing junction box has insufficient sealing performance, making it easy for water vapor, dust in the external environment and condensation generated inside the equipment to enter the junction box, causing damage to the electrical control components. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a junction box, which can significantly enhance the sealing performance of the junction box and reduce the risk of damage to the electrical control components inside the junction box.

[0004] The utility model also provides a household appliance including the above-mentioned junction box.

[0005] The junction box according to the first aspect embodiment of the utility model includes: a box body, at least one rubber sleeve and at least one tightening member. The box body is provided with a receiving cavity, and the box body is provided with at least one connection hole communicating with the receiving cavity; at least one of the rubber sleeves is correspondingly installed in at least one of the connection holes, and the rubber sleeve is provided with a wire passing channel for a power line to penetrate into the receiving cavity; at least one of the tightening members is correspondingly sleeved on at least one of the rubber sleeves, and the tightening member can narrow the wire passing channel so that at least part of the inner wall of the wire passing channel fits against the wire.

[0006] The junction box according to the embodiment of the utility model has at least the following beneficial effects:

[0007] The box body of the embodiment of the utility model is provided with a receiving cavity for loading electronic components, and the box body is provided with at least one connection hole communicating with the receiving cavity. Among them, a rubber sleeve is installed at each connection hole, and the rubber sleeve is provided with a wire passing channel for a power line to penetrate into the receiving cavity, thereby realizing the electrical connection between the electronic components in the receiving cavity and the functional components in the external environment; at least one tightening member is correspondingly sleeved on at least one of the rubber sleeves, and the tightening member can narrow the wire passing channel so that at least part of the inner wall of the wire passing channel fits against the wire, thereby realizing the closure of the wire passing channel, and further separating the receiving cavity from the outside world, significantly enhancing the sealing performance of the junction box, effectively blocking water vapor, condensation and leaked refrigerant from entering the receiving cavity, not only improving the safety of the junction box, but also enhancing the protection ability for the electronic components in the receiving cavity and reducing the possibility of damage to the electronic components.

[0008] According to some embodiments of the present utility model, the rubber sleeve includes a connecting portion and a tightening portion. The connecting portion is connected to the connecting hole, the tightening portion is connected to the connecting portion, the tightening portion is an elastic columnar structure, and the tightening member is sleeved on the tightening portion.

[0009] According to some embodiments of the present utility model, a blocking structure is provided in the wire passing channel. The blocking structure includes a plurality of windshields arranged circumferentially along the wire passing channel. The windshields can be bent axially along the wire passing channel to allow the wire to pass through the blocking structure.

[0010] According to some embodiments of the present utility model, along the axial direction of the wire passing channel, the blocking structure and the tightening member are spaced apart to define a transition cavity between the windshield and the tightening member in the wire passing channel.

[0011] According to some embodiments of the present utility model, the tightening member is a cable tie, and the cable tie is tied around the outer peripheral wall of the rubber sleeve along the circumferential direction of the rubber sleeve.

[0012] According to some embodiments of the present utility model, a first mounting portion protrudes from the bottom of the box body. The first mounting portion is provided with a first connecting hole communicating with the accommodating cavity. The junction box includes a plurality of the rubber sleeves, and one of the plurality of rubber sleeves is a first rubber sleeve. The first rubber sleeve is provided with a first wire passing channel. The first rubber sleeve is sleeved on the first mounting portion, and the first wire passing channel communicates with the first connecting hole.

[0013] According to some embodiments of the present utility model, a second mounting portion protrudes from the side wall of the box body. The second mounting portion is provided with a second connecting hole communicating with the accommodating cavity. The junction box includes a plurality of the rubber sleeves, and one of the plurality of rubber sleeves is a second rubber sleeve. The second rubber sleeve is provided with a second wire passing channel. The second rubber sleeve is clamped in the second connecting hole, and the second wire passing channel communicates with the accommodating cavity.

[0014] According to some embodiments of the present utility model, the second rubber sleeve includes a second connecting portion and a second tightening portion. The second tightening portion is connected to the second connecting portion. A second buckling groove is provided on the outer peripheral wall of the second connecting portion, and the second buckling groove is buckled with the second mounting portion.

[0015] According to some embodiments of the present utility model, the box body includes a front cover and a rear cover connected to each other. One end of the rear cover facing the front cover is provided with an opening. The rear cover is provided with a sealing groove extending along the circumference of the opening. A sealing member is provided in the sealing groove. One end of the front cover facing the rear cover is provided with a sealing rib. The sealing rib is inserted into the sealing groove and abuts against the sealing member.

[0016] According to the second embodiment of the utility model, the household appliance comprises: a housing, a chassis and the junction box as described in the first embodiment, wherein the chassis and the housing are arranged to form an inner cavity; and the box body is arranged in the inner cavity.

[0017] The household appliance according to the embodiment of the utility model has at least the following beneficial effects:

[0018] The household appliance adopts the junction box of the first aspect embodiment, and narrows the wire passage through a tightening piece so that at least part of the inner wall of the wire passage is in contact with the wire, thereby achieving closure of the wire passage, and further separating the accommodating cavity from the outside world. The tightening piece can narrow the wire passage so that at least part of the inner wall of the wire passage is in contact with the wire, thereby achieving closure of the wire passage, and further separating the accommodating cavity from the outside world, thereby improving the safety performance of the household appliance, extending the service life of the household appliance, thereby improving the reliability and stability of the household appliance, and providing users with a better usage experience.

[0019] According to some embodiments of the utility model, the chassis is provided with an opening, and a first mounting portion corresponding to the opening is protruded from the bottom of the box body, and the first mounting portion is provided with a first connecting hole connected to the accommodating cavity. The junction box includes a plurality of the rubber sleeves, one of the plurality of rubber sleeves is a first rubber sleeve, the first rubber sleeve is sleeved on the first mounting portion and clamped in the opening, the first rubber sleeve is provided with a first wire passing channel, and the first wire passing channel connects the first connecting hole and the external environment.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a structural schematic diagram of a junction box according to an embodiment of the utility model (first viewing angle);

[0023] Figure 2 This is a structural schematic diagram of a junction box according to an embodiment of the utility model (second viewing angle);

[0024] Figure 3 This is an exploded schematic diagram of a junction box according to an embodiment of the utility model;

[0025] Figure 4 This is a schematic structural diagram of a rubber sleeve according to an embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of an embodiment of the utility model in which the electric wire is passed through the rubber sleeve;

[0027] Figure 6 Explosion schematic diagram of a household appliance according to an embodiment of the present utility model;

[0028] Figure 7 Partial explosion schematic diagram of a household appliance according to an embodiment of the present utility model;

[0029] Figure 8 Partial cross-sectional view of a household appliance according to an embodiment of the present utility model;

[0030] Figure 9 Side view of a junction box according to an embodiment of the present utility model;

[0031] Figure 10 is Figure 9 Cross-sectional view in the direction of A-A in

[0032] Figure 11 is Figure 9 Cross-sectional view in the direction of B-B in

[0033] Figure 12 is Figure 11 Partial enlarged view at C in

[0034] Figure 13 Structural schematic diagram of a rear cover according to an embodiment of the present utility model.

[0035] Reference numerals in the drawings:

[0036] Junction box 1000; Household appliance 2000; Electric wire 3000;

[0037] Box body 100; Accommodating cavity 110; Connecting hole 120; First mounting portion 130; First connecting hole 131; Second mounting portion 140; Second connecting hole 141; Wire buckle 150; Extension portion 151; Bending portion 152; Limiting groove 153; Front cover 160; Sealing rib 161; Rear cover 170; Opening 171; Sealing groove 172; First limiting block 173; Second limiting block 174; Mounting groove 175; Snap 180; Latching position 190;

[0038] Rubber sleeve 200; Wire passing channel 210; Connecting portion 220; Tightening portion 230; Windshield 240; First rubber sleeve 250; First wire passing channel 251; First connecting portion 252; First latching groove 2521; First tightening portion 253; Second rubber sleeve 260; Second wire passing channel 261; Second connecting portion 262; Second latching groove 2621; Second tightening portion 263; Blocking structure 270;

[0039] Tightening member 300; Cable tie 310;

[0040] Sealing member 400;

[0041] Circuit board 500;

[0042] First fastener 600; Second fastener 700;

[0043] Housing 201; Chassis 202; Opening 2021; Inner cavity 203. Detailed implementation manners

[0044] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0045] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up and down, etc., is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0046] In the description of the present utility model, if the first and second are described only for the purpose of distinguishing technical features, it should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0047] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installation, and connection should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0048] The sealing requirements for the junction boxes of traditional air conditioners and heat pump devices are relatively low, mainly meeting the structural strength and basic explosion-proof requirements. Given the excellent thermal conductivity efficiency and evaporation latent heat properties of propane, air conditioners and heat pump devices often use R290 refrigerant. However, R290 refrigerant has the characteristics of being flammable and explosive. If the refrigerant leaks accidentally and enters the junction box, once encountering potential ignition sources such as electric sparks generated by the electric control components, it is extremely easy to trigger combustion or even explosion, constituting a relatively large safety hazard. In addition, the condensation generated inside the device and the water vapor in the external environment are likely to flow into the junction box with low sealing performance along the wires, thereby damaging the electric control components in the junction box.

[0049] To this end, some embodiments of the present utility model propose a junction box 1000, which is applicable to a household appliance 2000. The household appliance 2000 includes a housing 201, and the housing 201 is provided with an inner cavity 203. The junction box 1000 is disposed in the inner cavity 203. Among them, the household appliance 2000 can be an indoor air conditioner or an outdoor air conditioner, and can also be a heat pump product, such as a heating water heater, a heating device, etc. This embodiment does not make a limitation thereto. For the convenience of description, the following content takes the household appliance 2000 as a heating water heater as an example for illustration, and specifically refers to Figures 1 to 13 as shown to illustrate the junction box 1000.

[0050] Referring to Figure 1 , Figure 2 and Figure 6 as shown, in the embodiment of the present utility model, the junction box 1000 includes a box body 100, at least one rubber sleeve 200 and at least one tightening member 300. Among them, the box body 100 is a hollow structure, and an accommodation cavity 110 for accommodating electronic components is provided inside. In this embodiment, at least one connection hole 120 communicating with the accommodation cavity 110 is provided on the surface of the box body 100, that is, the connection hole 120 can be provided with one, two or more, and this embodiment does not make a limitation thereto. Taking the connection hole 120 being provided with multiple as an example, the multiple connection holes 120 can be provided at the bottom of the box body 100, can also be provided on the side wall of the box body 100, and the multiple connection holes 120 can also be dispersedly arranged at various positions of the box body 100.

[0051] In the embodiment of the present utility model, the number of the rubber sleeves 200 corresponds to the number of the connection holes 120. Based on this, referring to Figure 2 and Figure 3 as shown, at least one rubber sleeve 200 is installed in at least one connection hole 120 in a one-to-one correspondence. Specifically, the rubber sleeve 200 can be bonded to the connection hole 120, can also be snap-fitted to the connection hole 120, or can also be connected to the connection hole 120 by other connection methods. Among them, the rubber sleeve 200 is provided with a wire passing channel 210, and the wire passing channel 210 penetrates through the upper and lower ends of the rubber sleeve 200. It can be understood that in this embodiment, the wire passing channel 210 can be directly communicated with the accommodation cavity 110 or communicated with the accommodation cavity 110 through the connection hole 120 based on different connection methods between the rubber sleeve 200 and the connection hole 120. Therefore, other functional components located in the inner cavity 203 together with the junction box 1000 and other devices outside the housing 201 can pass the electric wire 3000 through the wire passing channel 210 and enter the accommodation cavity 110, so as to be connected to the electronic components in the junction box 1000.

[0052] In the embodiment of the present utility model, the number of the tightening members 300 corresponds to the number of the rubber sleeves 200. Based on this, referring to Figure 4 and Figure 5As shown, at least one tightening member 300 is sleeved on at least one rubber sleeve 200 one by one, and the tightening member 300 can narrow the wire passing channel 210 of the rubber sleeve 200. In this embodiment, the tightening member 300 can be a snap ring or a hoop, etc. It can be understood that the tightening member 300 can apply pressure to the rubber sleeve 200, squeeze the rubber sleeve 200 and cause it to shrink inward. During this process, the wire passing channel 210 gradually shrinks until a part of its inner wall is in close contact with the wire 3000 in the wire passing channel 210, so that the wire passing channel 210 can only supply the wire 3000 to pass through, thereby realizing the closure of the wire passing channel 210, and further separating the accommodation cavity 110 from the outside, significantly enhancing the sealing performance of the junction box 1000, effectively blocking water vapor, condensation and leaked refrigerant from entering the accommodation cavity 110, not only improving the safety of the junction box 1000, but also enhancing the protection ability of the electronic components in the accommodation cavity 110 and reducing the possibility of damage to the electronic components.

[0053] Referring to Figure 4 and Figure 5 As shown, in the embodiment of the present utility model, the rubber sleeve 200 includes an integrally formed connecting portion 220 and a tightening portion 230. The connecting portion 220 and the tightening portion 230 together form the wire passing channel 210. The tightening portion 230 is located on one side of the connecting portion 220 along the axial direction of the wire passing channel 210. In one example, the tightening portion 230 is located on the lower side of the connecting portion 220. The wire 3000 can penetrate into the wire passing channel 210 from one side of the tightening portion 230 and penetrate out from one side of the connecting portion 220. Among them, the connecting portion 220 is used to connect with the connecting hole 120. For example, the connecting portion 220 can be snap-fitted into the connecting hole 120. The tightening portion 230 is integrally columnar, and the tightening portion 230 is an elastic structure, which can be shrunk to a certain extent under the action of an external force. Based on this, in this embodiment, the tightening member 300 is sleeved on the tightening portion 230, so as to realize the narrowing of the wire passing channel 210.

[0054] Referring to Figure 4 and Figure 5As shown, in the embodiment of the utility model, the inner wall of the wire-passing channel 210 is protruded to form a plurality of windshields 240, and the plurality of windshields 240 are arranged at intervals along the circumference of the wire-passing channel 210 to form a blocking structure 270. It can be understood that the blocking structure 270 can play a wind-shielding effect, which can not only significantly reduce the vibration and instability of the box body 100 caused by the airflow entering the accommodating cavity 110, but also reduce the possibility of water vapor entering the accommodating cavity 110. In this embodiment, the windshield 240 is made of a flexible material, and gaps are formed between adjacent windshields 240. Based on this, the windshield 240 can be bent along the axial direction of the wire-passing channel 210, thereby opening the blocking structure 270 to allow the power line 3000 to pass through. It should be noted that when the wire 3000 passes through the wire passage 210 from one side of the tightening portion 230, the wind shield 240 bends upward; conversely, when the wire 3000 passes through the wire passage 210 from one side of the connecting portion 220, the wind shield 240 bends downward.

[0055] Reference Figure 5 As shown, in the embodiment of the utility model, the blocking structure 270 and the tightening member 300 are arranged at intervals along the axial direction of the wire-passing channel 210. In one example, the blocking structure 270 is located on the upper side of the tightening member 300, and there is a distance between the two. Based on this, since the tightening member 300 narrows the tightening part 230, the position corresponding to the connection between the tightening member 300 and the tightening part 230 in the wire-passing channel 210 is closed, and the blocking structure 270 also closes its position, so that a transition cavity (not shown in the figure) is defined between the tightening member 300 and the blocking structure 270. It can be understood that the existence of the transition cavity will reduce the heat exchange between the accommodating cavity 110 and the external environment, thereby reducing the possibility of condensation.

[0056] Reference Figure 5 As shown, in the embodiment of the utility model, the tightening member 300 is a cable tie 310. After the wire 3000 passes through the wire passage 210, the cable tie 310 is tied to the outer wall of the rubber sleeve 200 along the circumference of the rubber sleeve 200, which can not only narrow the wire passage 210 to achieve sealing, but also fix the wire 3000 and reduce the displacement and shaking of the wire 3000. It can be understood that the anti-retraction characteristics of the cable tie 310 ensure the irreversibility of the binding process, that is, once tightened, it can maintain the tightened state for a long time, thereby ensuring the long-term effectiveness and sustainability of the sealing effect. In addition, the cable tie 310 has high versatility and can be applied to rubber sleeves 200 of different specifications, and its cost is relatively low.

[0057] Reference Figure 2 and Figure 3As shown, in the embodiment of the present utility model, there are at least two connection holes 120 and rubber sleeves 200 respectively. Among them, at least two connection holes 120 are provided on the bottom wall and / or side wall of the box body 100, and at least two rubber sleeves 200 are connected to at least two connection holes 120 in a one-to-one correspondence.

[0058] It can be understood that, referring to Figure 6 and Figure 7 As shown, in the embodiment of the present utility model, the heating water heater includes a chassis 202, and a junction box 1000 is connected to the chassis 202. The chassis 202 is provided with an opening 2021 communicating with the external environment of the heating water heater for the power line 3000 to pass through.

[0059] Taking the case where there are two connection holes 120 and both are provided on the bottom wall of the box body 100 as an example, referring to Figure 2 As shown, two first mounting parts 130 are formed by protruding from the bottom of the box body 100, and the two first mounting parts 130 are arranged side by side. The first mounting part 130 is integrally columnar and corresponds to the opening 2021 of the chassis 202. During assembly, the first mounting part 130 is inserted into the opening 2021, thereby realizing the connection between the box body 100 and the chassis 202. Since the first mounting part 130 is provided with a first connection hole 131 communicating with the accommodation cavity 110, in this embodiment, the power line 3000 can pass through the first connection hole 131, so that the functional components in the external environment are connected to the electronic components in the accommodation cavity 110.

[0060] In order to improve the sealing performance of the junction box 1000, referring to Figure 7 and Figure 8 As shown, in the embodiment of the present utility model, the junction box 1000 includes a plurality of rubber sleeves 200, and one of the plurality of rubber sleeves 200 is a first rubber sleeve 250. The first rubber sleeve 250 is sleeved on the first mounting part 130, and the first rubber sleeve 250 is provided with a first wire passing channel 251 communicating with the first connection hole 131. Based on this, the power line 3000 can sequentially pass through the first wire passing channel 251 and the first connection hole 131, and thus penetrate into the accommodation cavity 110. It can be understood that since the first rubber sleeve 250 is located below the first mounting part 130, based on this, the routing of the power line 3000 is from bottom to top. Therefore, even if water droplets adhere to the power line 3000 or condensation occurs, it is difficult for them to flow into the accommodation cavity 110 along the power line 3000.

[0061] Specifically, referring to Figure 8As shown, the first rubber sleeve 250 includes a first connecting portion 252 and a first tightening portion 253. The first connecting portion 252 is connected to the first tightening portion 253. Among them, the first mounting portion 130 is inserted into the first connecting portion 252. A first buckling groove 2521 that is radially inwardly recessed along the first wire passing channel 251 is provided on the outer peripheral wall of the first connecting portion 252. The chassis 202 is buckled with the first buckling groove 2521, thereby realizing the firm connection between the first connecting portion 252 and the chassis 202. In this embodiment, the wire 3000 enters the first wire passing channel 251 from the first tightening portion 253, sequentially passes through the first wire passing channel 251 and the first connection hole 131, and then enters the accommodation cavity 110 to be connected to the electronic components in the accommodation cavity 110. Specifically, the junction box 1000 further includes a first tightening member 300 (not shown in the figure). The first tightening portion 253 protrudes from the lower side of the chassis 202, thereby facilitating the staff to sleeved the first tightening member 300 on the first tightening portion 253.

[0062] Taking the example that there are two connection holes 120 and both of the two connection holes 120 are provided on the side wall of the box body 100, referring to Figure 2 , Figure 3 and Figure 9 As shown, a second mounting portion 140 is formed by protruding from the side wall of the box body 100. The second mounting portion 140 is provided with a bottom wall extending along the front-rear direction of the box body 100. Two second connection holes 141 arranged side by side are provided on the bottom wall. The second connection holes 141 communicate with the accommodation cavity 110. The junction box 1000 includes a plurality of rubber sleeves 200. One of the plurality of rubber sleeves 200 is a second rubber sleeve 260. The second rubber sleeve 260 is provided with a second wire passing channel 261. The second wire passing channel 261 communicates with the accommodation cavity 110.

[0063] Specifically, in combination with Figure 10 it can be understood that the second rubber sleeve 260 includes a second connecting portion 262 and a second tightening portion 263. The second connecting portion 262 is connected to the second tightening portion 263. Among them, a second buckling groove 2621 that is radially inwardly recessed along the second wire passing channel 261 is provided on the outer peripheral wall of the second connecting portion 262. The bottom wall of the second mounting portion 140 is buckled with the second buckling groove 2621, thereby realizing the firm connection between the second mounting portion 140 and the second rubber sleeve 260. In this embodiment, the wire 3000 enters the second wire passing channel 261 from the second tightening portion 263, passes through the second wire passing channel 261, and then enters the accommodation cavity 110 to be connected to the electronic components in the accommodation cavity 110. Specifically, the junction box 1000 further includes a second tightening member 300 (not shown in the figure). The second tightening portion 263 protrudes from the lower side of the second mounting portion 140, thereby facilitating the staff to sleeved the second tightening member 300 on the second tightening portion 263.

[0064] Referring to Figure 2 and Figure 11As shown, in the embodiment of the present utility model, a wire buckle 150 protrudes from the side wall of the box body 100. The wire buckle 150 and the second mounting portion 140 are located on the same side and are located below the second rubber sleeve 260. It can be understood that in this embodiment, the wire 3000 can first pass through the wire buckle 150 and then enter the second wire passing channel 261 of the second rubber sleeve 260. The wire buckle 150 can fix the wire 3000, limit the wire 3000, and further reduce the shaking and displacement of the wire 3000.

[0065] Specifically, in combination with Figure 2 and Figure 11 As shown, in the embodiment of the present utility model, the wire buckle 150 includes an extension portion 151 and a bending portion 152. One end of the extension portion 151 is connected to the side wall of the box body 100, and the other end extends away from the box body 100. The bending portion 152 is connected to the end of the extension portion 151 and bends toward the side wall of the box body 100, so as to cooperate with the side wall of the box body 100 to define a limiting groove 153 for limiting the wire 3000. It should be noted that the wire buckles 150 can be arranged in pairs, and each pair of wire buckles 150 cooperates to limit the wire 3000 passing through the second rubber sleeve 260 above it.

[0066] Referring to Figure 2 and Figure 3 As shown, in the embodiment of the present utility model, the box body 100 includes a front cover 160 and a rear cover 170. The front cover 160 and the rear cover 170 are arranged along the front-rear direction of the box body 100, and the two cooperate to define a receiving cavity 110. Based on this, in order to improve the sealing performance of the box body 100, in this embodiment, referring to Figure 13 As shown, an opening 171 is formed at one end of the rear cover 170 facing the front cover 160, and the front cover 160 is covered on the opening 171 so as to enclose a receiving cavity 110 with the rear cover 170.

[0067] Among them, in combination with Figure 12 and Figure 13 It can be understood that a sealing groove 172 is arranged on the rear cover 170 along the circumference of the opening 171, and a sealing member 400 is arranged in the sealing groove 172. Among them, the sealing member 400 can be a rubber strip or a rubber ring, and this embodiment does not limit this. Correspondingly, a sealing rib 161 corresponding to the sealing groove 172 protrudes from one end of the front cover 160 facing the rear cover 170. When the rear cover 170 is connected to the front cover 160, the sealing rib 161 is inserted into the sealing groove 172 and abuts against the sealing member 400, thereby preventing water vapor or condensation in the external environment from flowing into the receiving cavity 110 through the gap between the front cover 160 and the rear cover 170, and further improving the sealing performance of the junction box 1000.

[0068] Referring to Figure 3 and Figure 8As shown, in the embodiment of the present utility model, the junction box 1000 further includes a circuit board 500. In order to fix the circuit board 500 in the accommodation cavity 110, in combination with Figure 13 As shown, on the two inner walls of the rear cover 170 along the length direction of the box body 100, limiting components are respectively provided. Specifically, the limiting components include a first limiting block 173 and a second limiting block 174. The first limiting block 173 and the second limiting block 174 are arranged at intervals along the width direction of the box body 100, and define an installation groove 175. Both ends of the circuit board 500 are respectively inserted into the two installation grooves 175 formed by the two limiting components.

[0069] In the embodiment of the present utility model, the front cover 160 and the rear cover 170 are connected through a snap connection structure. The snap connection structure includes a snap 180 and a snap position 190. Among them, the snap 180 is provided on one of the front cover 160 and the rear cover 170, and the snap position 190 is provided on the other of the front cover 160 and the rear cover 170. The snap 180 and the snap position 190 are snapped together to achieve the tight connection between the front cover 160 and the rear cover 170.

[0070] It should be noted that the front cover 160 and the rear cover 170 can also be further fixed through a first fastener 600. In one example, the first fastener 600 is a screw. The front cover 160 is provided with a through hole through which the screw can pass, and the rear cover 170 is provided with a threaded hole that can cooperate with the screw. Based on this, the first fastener 600 can pass through the through hole and be threadedly engaged with the threaded hole to achieve a tight connection in a threaded connection manner; in another example, the first fastener 600 is a rivet. The front cover 160 is provided with a through hole through which the rivet can pass, and the rear cover 170 is provided with a rivet hole that can cooperate with the rivet. Based on this, the first fastener 600 can pass through the through hole and be riveted with the rivet hole to achieve a tight connection in a riveting manner. The structure form of the first fastener 600 is not limited in this embodiment.

[0071] In one example, with reference to Figure 1 and Figure 3 As shown, a snap 180 protrudes from the side wall of the front cover 160, and the side wall of the rear cover 170 is provided with a snap position 190 corresponding to the snap 180. The snap 180 is snapped onto the snap position 190 to achieve the connection between the front cover 160 and the rear cover 170. It should be noted that the snap connection structure can be provided with two groups, four groups, six groups, etc. This embodiment does not limit this.

[0072] With reference to Figure 6 and Figure 7As shown in the figure, an embodiment of the present utility model further provides a household appliance 2000, including: a housing 201, a chassis 202, and a junction box 1000 as described in the above embodiment. Among them, the housing 201 and the chassis 202 enclose to form an inner cavity 203, and the box body 100 is arranged in the inner cavity 203. Specifically, the box body 100 can be fixedly connected to the chassis 202 through a second fastener 700.

[0073] In one example, the second fastener 700 is a screw. The box body 100 is provided with through holes through which the screws can pass, and the chassis 202 is provided with screw holes that can cooperate with the screws. Based on this, the second fastener 700 can pass through the through holes and be threadedly engaged with the screw holes to achieve a fixed connection in a threaded connection manner; in another example, the second fastener 700 is a rivet. The box body 100 is provided with through holes through which the rivets can pass, and the chassis 202 is provided with rivet holes that can cooperate with the rivets. Based on this, the second fastener 700 can pass through the through holes and be fixedly connected to the rivet holes in a riveting manner. The structure form of the second fastener 700 is not limited in this embodiment.

[0074] In this embodiment, the household appliance 2000 can be an indoor unit of an air conditioner or an outdoor unit of an air conditioner. The household appliance 2000 can also be a heating water heater, a heating device, etc., and this embodiment does not make any limitations thereto.

[0075] The household appliance 2000 of the embodiment of the present utility model adopts the junction box 1000 of the above embodiment. The wire passing channel 210 is narrowed by a tightening member 300, so that at least part of the inner wall of the wire passing channel 210 fits against the electric wire 3000, thereby realizing the closing of the wire passing channel 210, and further separating the accommodating cavity 110 from the outside. The tightening member 300 can narrow the wire passing channel 210, so that at least part of the inner wall of the wire passing channel 210 fits against the electric wire 3000, thereby realizing the closing of the wire passing channel 210, and further separating the accommodating cavity 110 from the outside, improving the safety performance of the household appliance 2000, extending the service life of the household appliance 2000, thereby enhancing the reliability and stability of the household appliance 2000, and providing a better user experience for users.

[0076] Since the household appliance 2000 adopts all the technical solutions of the junction box 1000 of the above embodiment, it at least has all the beneficial effects brought by the technical solutions of the above embodiment, which will not be elaborated here.

[0077] Of course, the present utility model is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A junction box, characterized in that: include: The box body is provided with a receiving cavity, and the box body is provided with at least one connecting hole communicating with the receiving cavity; At least one rubber sleeve is installed in a one-to-one correspondence with at least one of the connection holes, and the rubber sleeve is provided with a wire passage for the power supply wire to pass through the accommodating cavity; At least one tightening member is sleeved on at least one of the rubber sleeves in a one-to-one correspondence, and the tightening member can narrow the wire passage so that at least part of the inner wall of the wire passage fits the wire.

2. The junction box according to claim 1, characterized in that: The rubber sleeve includes a connecting portion and a tightening portion, the connecting portion is connected to the connecting hole, the tightening portion is connected to the connecting portion, the tightening portion is an elastic columnar structure, and the tightening piece is sleeved on the tightening portion.

3. The junction box according to claim 1 or 2, characterized in that: A blocking structure is provided in the wire-passing channel, and the blocking structure includes a plurality of windshields arranged along the circumference of the wire-passing channel, and the windshields can be bent along the axial direction of the wire-passing channel to allow the wires to pass through the blocking structure.

4. The junction box according to claim 3, characterized in that: Along the axial direction of the wire-passing channel, the blocking structure and the tightening member are arranged at intervals to define a transition cavity between the wind shield plate and the tightening member in the wire-passing channel.

5. The junction box according to claim 1, characterized in that: The tightening member is a cable tie, and the cable tie is tied to the outer peripheral wall of the rubber sleeve along the circumferential direction of the rubber sleeve.

6. The junction box according to claim 1, characterized in that: A first mounting portion is protruded from the bottom of the box body, and the first mounting portion is provided with a first connecting hole connected to the accommodating cavity. The junction box includes a plurality of rubber sleeves, one of the plurality of rubber sleeves is a first rubber sleeve, and the first rubber sleeve is provided with a first wire passing channel. The first rubber sleeve is sleeved on the first mounting portion, and the first wire passing channel is connected to the first connecting hole.

7. The junction box according to claim 1 or 6, characterized in that: A second mounting portion is protruded from the side wall of the box body, and the second mounting portion is provided with a second connecting hole connected to the accommodating cavity. The junction box includes a plurality of the rubber sleeves, one of the plurality of rubber sleeves is a second rubber sleeve, and the second rubber sleeve is provided with a second wire passing channel. The second rubber sleeve is clamped in the second connecting hole, and the second wire passing channel is connected to the accommodating cavity.

8. The junction box according to claim 7, characterized in that: The second rubber sleeve includes a second connecting portion and a second tightening portion, the second tightening portion is connected to the second connecting portion, the outer peripheral wall of the second connecting portion is provided with a second buckling groove, and the second buckling groove is buckled with the second mounting portion.

9. The junction box according to claim 1, characterized in that: The box body includes a front cover and a rear cover connected to each other, the rear cover is provided with an opening at one end facing the front cover, the rear cover is provided with a sealing groove extending along the circumference of the opening, a sealing member is provided in the sealing groove, and a sealing rib is provided at one end of the front cover facing the rear cover, the sealing rib is inserted in the sealing groove and abuts against the sealing member.

10. A household appliance, characterized in that: include: shell; A chassis, arranged together with the shell to form an inner cavity; The junction box according to any one of claims 1 to 9, wherein the box body is disposed in the inner cavity.

11. The household appliance according to claim 10, characterized in that: The chassis is provided with an opening, and a first mounting portion corresponding to the opening is protruded from the bottom of the box body, and the first mounting portion is provided with a first connecting hole connected to the accommodating cavity. The junction box includes a plurality of rubber sleeves, one of the plurality of rubber sleeves is a first rubber sleeve, and the first rubber sleeve is sleeved on the first mounting portion and clamped in the opening. The first rubber sleeve is provided with a first wire passing channel, and the first wire passing channel connects the first connecting hole and the external environment.

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