CN115013963A - Partition type electric device mounting lining plate, shell and electric water heater - Google Patents

Abstract

The invention discloses a lining plate and a shell for installing a partition type electric device and an electric water heater. The lining plate is used in the installation of the partitioned electric device, an installation opening is formed in the lining plate, a first installation groove and a second installation groove are further formed in the lining plate, and the first installation groove and the second installation groove are arranged at intervals and are located outside the installation opening. Different electric devices are installed in different areas, so that the crossing among the wire harnesses is reduced, and the potential safety hazard is reduced, so that the use reliability of the electric water heater is improved.

Description

Partitioned electrical device installation liner, shell and electric water heater

technical field

The invention belongs to the technical field of household appliances, and in particular relates to a lining board, a casing and an electric water heater for installing a partitioned electrical device.

Background technique

At present, water heaters are household appliances commonly used in people's daily life. Water heaters are divided into electric water heaters, electric water heaters, heat pump water heaters and solar water heaters. Electric water heaters are widely used because of their ease of use. Among them, electric water heaters can be divided into storage-type electric water heaters and instantaneous electric water heaters according to their heating power, and storage-type electric water heaters are equipped with a water tank, which has the characteristics of large water output and stable water temperature, and is purchased by more families. use.

The water heater in the conventional technology usually adopts a cylindrical structure, and the electric device is installed at the end position of the casing of the water heater. For example, Chinese Patent No. 201420173265.7 discloses an electric water heater, which includes: an outer shell, an inner tank, a thermal insulation layer and an electric control box. The inner tank is arranged in the outer shell and a filling space is arranged between the inner tank and the outer shell. The insulating layer is filled in the filling space. The electric control box is arranged between the inner liner and the outer shell, and the electric control box is filled with aerogel insulation felt. The electrical devices placed in the electrical control box generally include power boards, thermostats, power supply wiring harnesses, and control wiring harnesses. Among them, on the one hand, the power board is connected to the external socket through an external cable to receive commercial power, and on the other hand, the power board is also connected to the electric heater connected to the inner tank of the electric water heater through the power supply harness to supply power to the electric heater; at the same time, for the temperature The controller needs to be connected to the temperature sensor set on the inner tank through the control wire harness to realize temperature control.

However, due to the large number of electrical components and the complicated wiring harnesses, the internal wiring harnesses and electrical components in the electrical control box are installed in disorder, and there are potential safety hazards due to the intersection of strong and weak currents. In view of this, how to design a technology to reduce potential safety hazards to improve reliability of use is the technical problem to be solved by the present invention.

SUMMARY OF THE INVENTION

The invention provides a lining board, a casing and an electric water heater for partitioned electrical device installation. By partitioning different electrical devices, the intersection between wire harnesses is reduced, safety hazards are reduced, and the use reliability of the electric water heater is improved.

In order to achieve the above-mentioned technical purpose, the present invention adopts the following technical solutions to realize:

In one aspect, the present invention provides a partitioned electrical device mounting liner, the liner is provided with a mounting opening, the liner is further provided with a first mounting groove and a second mounting groove, the first mounting groove An installation groove and the second installation groove are spaced apart and located outside the installation opening.

In an embodiment of the present application, a first wiring groove is provided between the first installation groove and the installation port, and a second wire groove is provided between the second-first installation groove and the installation port wireway.

In an embodiment of the present application, a first line card is provided in the first wiring groove, and a second line card is provided in the second wiring groove.

In an embodiment of the present application, a mounting platform is further provided on the lining plate.

In an embodiment of the present application, the first installation groove is located on one side of the installation platform, and the second installation groove is located on the other side of the installation platform.

In an embodiment of the present application, a third wire routing groove is further provided between the first installation groove and the second installation groove, and the third wire routing groove is arranged on one side of the installation platform.

In an embodiment of the present application, the installation port is located above the installation platform, and the third wiring groove is arranged below the installation platform.

In an embodiment of the present application, a third line card is disposed in the third wiring slot.

In one aspect, the present invention provides a casing, including a rear casing and a front casing, and also includes the above-mentioned lining plate for installing a partitioned electrical device; the lining plate is arranged on the rear casing, and the front casing is arranged on the on the backing plate and cover the backing plate.

In one aspect, the present invention provides an electric water heater, including an inner pot, an electric heating component, a power supply board, and a thermostat, including the above-mentioned outer shell; the inner pot is arranged in the outer shell, and the electric heating component is arranged in the outer shell. On the inner tank, the power board is arranged in the first installation slot in the outer shell and is connected with the electric heating component through a wire harness, and the thermostat is arranged in the second installation slot in the outer shell And connected with the electric heating component through a wire harness.

The electric heating components are placed by opening installation openings on the lining plate, and the two installation slots arranged on the lining plate are used to install the power board and the thermostat respectively, so that the power board and the thermostat can be independently separated from each other. Correspondingly, the wiring harness connected to the power board and the thermostat is relatively separated, which effectively reduces the potential safety hazard caused by the crossing of strong and weak currents due to the interleaving of the wiring harness, and improves the reliability of the electric water heater. At the same time, in the actual assembly process, it is more conducive to the operator to quickly and efficiently partition the assembly line, and improve the assembly efficiency and quality.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of an embodiment of a partitioned electrical device mounting liner of the present invention;

FIG. 2 is a reference diagram of the use state of an embodiment of the partition type electrical device mounting liner of the present invention;

3 is an exploded view of an embodiment of the electric water heater of the present invention;

4 is a cross-sectional view of an embodiment of the electric water heater of the present invention;

Fig. 5 is the partial enlarged schematic diagram of A area in Fig. 4;

Fig. 6 is the partial enlarged schematic diagram of B region in Fig. 4;

7 is a schematic structural diagram of a front panel in an embodiment of the electric water heater of the present invention.

Description of reference numbers:

shell 1;

The rear shell 11, the first screw hole 111, the mounting table 112, the second positioning groove 113, the stepped surface 114, the retaining rib 115;

The lining plate 12, the first through hole 121, the first clamping portion 122, the second screw hole 123, the first guide chute 124, the second guide chute 125, the positioning rib 126, the extension edge 127;

a card slot 1221, a first positioning slot 1222;

a first installation groove 1201, a second installation groove 1202, a first wire groove 1203, a second wire groove 1204, an installation platform 1205, and a third wire groove 1206;

The first line card 12031, the second line card 12041, the third line card 12061;

the front shell 13, the second clamping part 130, the front panel 132, the shell 131, the second through hole 133, the groove 134, the slot 135, the second plug tongue 136, the extension part 137;

Claw 1301, first tongue 1302;

an installation port 101 and an annular shielding portion 102;

liner 2;

Flange connection port 201, connecting frame 202;

Electric heating part 3;

Electronic control device 4;

Power board 41, thermostat 42,

control panel 5;

display 6;

Hanger 100.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positions The terminology of the relationship is based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as Limitations of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the present invention, unless otherwise expressly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and diagonally above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature is directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present disclosure may repeat reference numerals and/or reference letters in different instances for the purpose of simplicity and clarity and not in itself indicative of a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Electric water heater is a kind of water heater that uses electric energy as the main energy material, and the high-temperature heat generated after energization directly heats the water stored in the electric water heater to achieve the purpose of preparing hot water.

An electric water heater usually consists of a water tank, an electric heating component and an electric control device. A water storage cavity is formed in the water tank to store the water to be heated, and the electric heating component is inserted into the water storage cavity formed by the water tank. The electric control device It is used to control the on-off operation of the electric heating component, so that the water in the water tank is heated to the set temperature.

For the water tank of the electric water heater, the water tank generally includes an outer shell and an inner tank, and an insulating layer is formed between the outer shell and the inner tank. Among them, the outer shell is generally made of plastic material to meet the design requirements of beautiful and diverse designs; the inner tank can be made of a metal tank body or a plastic tank body according to needs.

In addition, for the thermal insulation layer formed between the outer shell and the inner tank, commonly used thermal insulation materials include asbestos, sponge, foam plastic, polyurethane foam, etc. In the conventional technology, in order to obtain a good thermal insulation effect, the method of foaming is usually adopted. form an insulating layer.

Among them, for the inner liner with metal duct body, due to the influence of water quality, the interior of the liner is prone to corrosion. For this reason, the water tank is also equipped with a magnesium rod, which is inserted into the water storage cavity inside the water tank.

Since magnesium is the metal with the lowest potential in the electrochemical sequence, it is not physiologically toxic. Therefore, it is very ideal to be used to make magnesium rods to protect the inner liner. The size of the magnesium rod is directly related to the length of the protection time and the size of the protective effect. The larger the magnesium rod, the better the protection effect and the longer the protection time.

The water tank is also provided with a water inlet pipe and a water outlet pipe. The water inlet pipe is used to deliver cold water to the water storage cavity formed in the water tank, and the hot water in the water storage cavity is output from the water outlet pipe.

For the electric heating component, electric heating methods such as electric heating wire, magnetic energy, or silicon tube heating can be used to heat the water stored in the water storage cavity.

For the electronic control device, it is used to receive the detection signal sent by the related sensors (such as water temperature sensor, flow sensor), and at the same time, control the electric heating component to run on and off.

When the electric water heater is working, the electric heating part is controlled by the electric control device to be energized and heated, and when the water temperature of the water in the water tank reaches the set value, the electric control device controls the electric heating part to cut off the power.

Embodiment 1, as shown in FIG. 1-FIG. 2, the lining plate 12 for an electric water heater according to an embodiment of the present invention is used to install the electric control device 4 in the electric water heater. It should be noted that the electronic control device generally includes components such as the power board 41 and the thermostat 42. The power board 41 and the thermostat 42 need to be connected to the electric heating component 3 configured on the inner tank 2 through the wiring harness. A temperature sensor for detecting the water temperature in the inner pot 2 is arranged on the electric heating member 3 .

In order to install the power supply board 41 and the temperature controller 42 in different areas, the lining board is used to install the power supply board 41 and the temperature controller 42, wherein the lining board is provided with the installation port 101, and the lining board is also provided with There are a first installation groove 1201 and a second installation groove 1202, and the first installation groove and the second installation groove are spaced apart and located outside the installation opening.

Specifically, in the actual assembly process, the end of the electric heating component installed on the inner tank is exposed in the installation opening. For the power board 41 and the thermostat 42, the power board 41 is installed in the first installation slot, and the thermostat 42 is installed in the second installation slot. In this way, the power board 41 and the temperature controller 42 are respectively installed in different installation slots, so as to realize the partition installation of the power board 41 and the temperature controller 42. The power board 41 and the temperature controller 42 located in different installation slots pass through the respective The wire harness is connected to the electric heating part 3 at the installation opening 101 .

The power board 41 is connected to the electric heating component through a wire harness to supply power to the electric heating component, so that the electric heating component heats the water in the inner tank 2 after the electric heating component is energized. At the same time, the temperature controller receives the temperature signal sent by the temperature sensor on the electric heating component through the wire harness, and then triggers the power board to control the on-off operation of the electric heating component.

Since the power board 41 and the temperature controller 42 are distributed in different installation slots, in the actual installation process, the operator can install the power board 41 and the temperature controller 42 independently. The 42 distribution is independent for the connection of the wiring harness, so that the internal electrical components of the electric water heater can realize the separation design of strong and weak electricity, which is more conducive to the neat distribution of the wiring harness, thereby reducing the occurrence of leakage caused by the mixing of strong and weak wiring harnesses in the later use process. security incident.

In some embodiments, in order to facilitate the orderly wiring of the operator, a corresponding wiring groove is designed between the installation groove and the installation port. A first wiring slot 1203 is arranged between the first installation slot and the installation opening, and a second wiring slot 1204 is arranged between the second-first installation slot and the installation opening.

Specifically, after the power board 41 and the temperature controller 42 are respectively installed in the corresponding installation slots during the assembly process, the wiring harness between the power board 41 and the electric heating component 3 is arranged in the first wiring slot 1203, while The wiring harness between the thermostat 42 and the electric heating component 3 is arranged in the second wiring groove.

Wherein, in order to fix the wire harness more firmly and reliably, a first line card 12031 may also be provided in the first wiring groove, and a second line card 12041 may be provided in the second wiring groove.

Specifically, in the process of arranging the wire harness in the wire routing slot, the wire harness in the wire routing slot is limited by using the wire card, so as to prevent the wire harness from being detached from the wire routing slot. In the actual use process, for the line card in the wiring groove, it can be directly formed on the side wall of the wiring groove and protruding from the other side wall of the pressure plate, or the line card is an independent part, through the screw Conventional fixing methods such as fixed or snap-fit are fixed in the wire groove and pressed against the wire harness.

In other embodiments, a mounting platform 1205 is further provided on the backing plate.

Specifically, for the electric water heater, it needs to be equipped with components such as the control panel 5 or the display 6 as required, and the installation platform 1205 has a flat installation surface to meet the installation requirements of the control panel 43 or the display 44 .

Wherein, in order to facilitate the distributed installation of electrical components, the first installation groove is located on one side of the installation platform, and the second installation groove is located on the other side of the installation platform.

Specifically, because the control panel 5 or the display 6 is usually located in the middle part of the electric water heater to facilitate the user's operation and use, and the two installation slots are distributed on both sides of the installation platform, the two sides of the lining plate can be fully utilized. area to install power strip 41 and thermostat 42.

In another embodiment, the thermostat 42 needs to be connected to the power board 41 for power supply, for this purpose, a third wiring slot 1206 may be further provided between the first installation slot and the second installation slot , the third wiring groove is arranged on one side of the installation platform.

Specifically, since the first installation slot and the second installation slot are distributed on both sides of the installation platform, the third wiring slot 1206 is configured at the bottom of the installation platform to meet the requirements of the temperature controller 42 and the Requirements for wiring harness connection between power boards 41.

Similarly, a third line card 12061 is provided in the third wiring groove, and the third line card 12061 is used to limit the position of the wire harness between the thermostat 42 and the power board 41 .

In a preferred embodiment, in order to reasonably distribute the installation positions of various electrical components, the installation port is located above the installation platform, and the third wire routing slot is arranged below the installation platform.

Specifically, by arranging the third wire trough below the installation platform, the area where the edge of the lining plate is located can be fully utilized to arrange the wire harness. In addition, the three wire troughs are arranged around the periphery of the installation platform. More effective independent wiring can make the wiring harness arrangement more neat and tidy.

The electric heating components are placed by opening installation openings on the lining plate, and the two installation slots arranged on the lining plate are used to install the power board and the thermostat respectively, so that the power board and the thermostat can be independently separated from each other. Correspondingly, the wiring harness connected to the power board and the thermostat is relatively separated, which effectively reduces the potential safety hazard caused by the crossing of strong and weak currents due to the interleaving of the wiring harness, and improves the reliability of the electric water heater. At the same time, in the actual assembly process, it is more conducive to the operator to quickly and efficiently partition the assembly line, and improve the assembly efficiency and quality.

Based on the above-mentioned first embodiment, the lining plate is installed in the shell of the electric water heater when in use. According to the casing for an electric water heater of the embodiment of the present invention, it should be noted that the casing of the embodiment of the present invention can be installed on a wall extending in a vertical direction, and can also be installed on a wall extending in a horizontal direction.

For the convenience of description, the structure of the casing is described below by taking the casing mounted on a vertical wall as an example.

Embodiment 2, as shown in Figures 2 to 6, the present invention also provides an electric water heater. The water tank used in the water tank adopts a flat design to reduce the effective indoor space occupied by the electric water heater, and the water tank includes an assembled shell 1. , the inner tank 2 and the electric heating part 3.

Among them, since the outer shell 1 and the inner pot 2 are all flat structures, correspondingly, the following structural improvements are made to the outer shell 1, the inner pot 2 and the electric heating component 3.

The front part of the housing 1 is provided with an installation opening 101 , and the inner wall of the housing 1 is further provided with an annular shielding part 102 , and the annular shielding part 102 is arranged around the installation opening 101 .

The inner pot, the front part of the inner pot 2 is provided with a flange connection port 201 .

The inner tank 2 is located in the outer shell 1, the annular shielding portion 102 surrounds the outer side of the flange connection port 201, an insulating layer (not shown) is arranged between the outer shell 1 and the inner tank 2, and the electric heating component 3 is arranged in the flange connection The mouth 201 extends into the interior of the inner bladder 2 .

Specifically, the overall water tank adopts a flat design, and its thickness dimension is smaller than the height and length dimensions. In order to meet the installation requirements of the electric heating part 3 and the maintenance requirements of the electric heating part 3 in the later stage, it is arranged at the front of the casing 1 There is an installation port 101 , and correspondingly, a flange connection port 201 is disposed at the front of the inner pot 2 .

When the electric heating element 3 needs to be assembled, the electric heating element 3 can be inserted from the installation port 101 and extended into the inner tank 2 via the flange connection port 201 to complete the assembly. Similarly, when the electric heating element 3 is repaired and replaced in the later stage, the electric heating element 3 can be disassembled from the inner tank 2 through the installation port 101 and taken out conveniently.

At the same time, for a water tank with a flat structure, the electric heating component 3 is installed at the front of the inner tank 2 to make full use of the area of the front surface of the inner tank 2 to securely and reliably install the electric heating component 3 .

More importantly, during foaming, in order to reduce or prevent the foaming material from overflowing around the flange connection port 201 of the inner pot 2, an annular shielding portion extending toward the flange connection port 201 is formed on the inner wall of the outer casing 1. 102 , the annular shielding portion 102 has a cylindrical structure as a whole and surrounds the periphery of the installation opening 101 . After the inner tank 2 is installed in the shell 1, the annular shielding portion 102 will surround the periphery of the flange connection port 201, thereby forming an area between the annular shielding portion 102 and the flange connection port 201 for preventing the leakage of the foaming material.

A foaming cavity is formed between the outer shell 1 and the inner tank 2. After the foaming material is injected into the foaming cavity, when the foaming material flows to the flange connection port 201, the foaming material can be blocked by the annular shielding portion 102. Thereby, the leakage of the foaming material from the flange connection port 201 is reduced.

In some embodiments, in order to improve the effect of preventing material spillage, the edge of the annular shielding portion 102 abuts against the outer wall of the inner container 2 .

Specifically, after the inner pot 2 is loaded into the outer shell 1, the edge of the annular shielding portion 102 will be attached to the outer wall of the inner pot 2, so that during the foaming process, the annular shielding portion 102 can be used to better block foaming The material leaks from the flange connection port 201.

In a preferred embodiment, in order to facilitate assembly, a gap is formed between the edge of the annular shielding portion 102 and the outer wall of the inner pot 2 . Further, in order to reduce the leakage of the foam material from the gap, a first flexible sealing portion (not shown) may be provided outside the annular shielding portion 102 , and the first flexible sealing portion shields the gap.

Specifically, in the assembly process, the first flexible sealing portion is firstly wrapped around the outside of the annular shielding portion 102 and extended to the edge of the annular shielding portion 102 . After the inner container 2 is loaded into the outer shell 1, since the first flexible sealing part has elasticity and can be deformed, the first flexible sealing part will tightly abut against the outer wall of the inner container 2 to pass the first flexible sealing part The gap formed between the annular shielding portion 102 and the inner pot 2 is effectively sealed.

Similarly, a second flexible sealing portion may also be provided outside the flange connection port 201, and the second flexible sealing portion covers the gap.

Specifically, in the assembling process, the inner container 2 is first wound with a second flexible sealing portion around the flange connection port 201 . After the inner container 2 is loaded into the outer shell 1, since the second flexible sealing part has elasticity and can be deformed, the annular shielding part 102 is pressed on the second flexible sealing part, so as to effectively seal the second flexible sealing part through the second flexible sealing part. The gap formed between the annular shielding portion 102 and the inner pot 2 is sealed.

In the actual use process, as for the concrete manifestation of the flexible sealing portion, components such as collodion or sealing gasket can be used, which will not be limited or described here.

In another embodiment, in order to better block the foaming material flowing to the flange connection port 201 through the annular shielding portion 102 , along the direction from the installation port 101 to the flange connection port 201 , the outer portion of the annular shielding portion 102 is The diameter gradually decreases.

Specifically, the cross section of the annular shielding portion 102 is a bell mouth structure, the size of the port opposite the annular shielding portion 102 and the inner pot 2 is small, and the outer wall of the annular shielding portion 102 forms an inclined surface, on the one hand, the smaller port is used to block The foaming material overflows, and on the other hand, the inclined outer wall ensures that the foaming material can flow along it to evenly distribute the foaming material outside the inner container 2 .

In some embodiments, in order to effectively locate the position of the inner container 2 in the outer shell 1 before foaming, in order to avoid the deviation of the inner container 2 in the outer shell 1 during the foaming process. Then, the back of the inner container 2 is provided with a connecting frame 202, and the connecting frame 202 is provided with a threaded hole (not marked). Correspondingly, the back of the casing 1 is provided with a hanger 100, and the hanger 100 is provided with a mounting hole (not marked); the bolt passes through the mounting hole and extends into the casing 1 and is threaded in the threaded hole, The connecting frame 202 abuts against the inner wall of the housing 1 .

Specifically, after the inner container 2 is installed into the outer shell 1, the inner container 2 is fixed on the outer shell 1 through the connecting frame 202, and at the same time, the connecting frame 202 is connected with the hanger 100 through bolts, and at the same time serves to install the hanger 100 role.

In another embodiment, the installation opening 101 is formed at the front of the housing 1 , and in order to optimize the appearance, the front panel 132 disposed at the front of the housing 1 can be used for shielding. During normal use, the front panel 132 is fixed on the front of the housing 1 to cover the installation opening 101 , and when the electric heating component 3 needs to be repaired, the front panel 132 is removed.

The installation port is arranged at the front of the casing to meet the requirements of the installation and later maintenance of the electric heating component. At the same time, an annular shielding portion extending toward the inside is formed around the installation opening inside the casing, and the annular shielding portion surrounds the inner tank. At the periphery of the flange connection port, due to the mutual cooperation between the annular shielding part and the front surface of the inner tank, the outer periphery of the flange connection port can be better anti-overflow treatment. In this way, during the foaming process, the foam material flows into the shell. After the foaming material flows to the flange connection port of the inner tank, it can be blocked by the annular shielding part to reduce the overflow of the foaming material, thereby improving the foaming quality and improving the product quality.

Based on the first and second embodiments above, the embodiment of the present invention also has the following structural design for the casing 1 .

Embodiment 3, as shown in FIGS. 2-7 , for the casing 1 in the above-mentioned embodiment 2, it adopts a flat design, and adopts an arc shape design as a whole to achieve a good appearance design effect.

In order to achieve the screwless design in front view, the following structural design is adopted for the housing 1 .

Housing 1 includes:

The rear shell 11, the edge of the rear shell 11 is provided with a first screw hole 111, and the back of the rear shell 11 forms a mounting surface;

The lining plate 12, the edge of the lining plate 12 is provided with a first through hole 121, the outer surface of the lining plate 12 is also provided with a first clamping portion 122, the installation opening 101 is formed on the lining plate 12, and the inner wall of the lining plate 12 is provided with annular shielding portion 102;

The front shell 13, the inner surface of the front shell 13 is provided with a second clamping portion 130;

The lining plate 12 is connected with the rear shell 11, the screws pass through the first through holes 121 and are screwed into the corresponding first screw holes 111, the front shell 13 covers the lining plate 12, and the first clamping portion 122 is connected to the first through hole 121. The corresponding second clamping portions 130 are connected together.

The rear shell 11 and the lining plate 12 in the housing 1 are connected by screws, and an installation cavity is formed between the rear shell 11 and the lining plate 12, so that the inner tank can be installed through the installation cavity. The rear shell 11 and the lining plate 12 are connected and fixed by screws, so that the two directly have sufficient structural connection strength to meet the structural strength requirements of foaming between the outer shell 1 and the inner bladder to form a thermal insulation layer in the later stage.

For the connection process between the rear shell 11 and the lining plate 12, the specific steps are: after the rear shell 11 and the lining plate 12 are butted together, the first through holes 121 are aligned with the corresponding first screw holes 111, and then the screws Pass through the first through hole 121 and screw in the first screw hole 111 . In this way, the rear shell 11 and the lining plate 12 are firmly and securely connected together by screws.

In order to achieve the appearance effect of no exposed screws, the front shell 13 is installed on the lining plate 12 by means of snap-fitting. Specifically, after the rear shell 11 and the lining plate 12 are fixedly connected together, since the first through holes 121 on the lining plate 12 can be seen from the front of the casing 1, in order to keep the overall appearance from exposing the first through holes 121 and If the screw is used, the first through hole 121 is shielded by the front case 13 .

The connection process between the front shell 13 and the lining plate 12 is specifically: the second engaging portion 130 on the front shell 13 is snapped together with the first engaging portion 122 at the corresponding position on the lining plate 12, so as to realize The front shell 13 is snapped onto the lining plate 12 . At the same time, the first through hole 121 is shielded by the front case 13 , so that the outer casing assembly does not see the first through hole 121 from the outside, so as to achieve an overall appearance effect without exposed screws. In addition, due to the way of clip-installation, the clip-installed connection part is blocked by the front shell 13, so as to optimize the appearance effect.

In some embodiments, various structural forms may be adopted for the specific representation entities of the first clamping portion 122 and the second clamping portion 130 , which will be exemplified below.

The second clamping portion 130 includes a clamping claw 1301 , and the first clamping portion 122 includes a clamping groove 1221 , and the clamping claw 1301 is clamped in the clamping groove 1221 .

Specifically, when the front shell 13 and the lining plate 12 are connected by clamping, the clamping claw 1301 will be inserted into the clamping groove 1221, and the clamping claw 1301 and the clamping groove 1221 are used to cooperate with each other, so that the front shell 13 and the lining plate 12 are connected. together.

Wherein, in order to improve the connection strength, the second engaging portion 130 further includes a first insertion tongue 1302 , the first engaging portion 122 further includes a first positioning groove 1222 , and the first insertion tongue 1302 is inserted into the first positioning groove 1222 .

Specifically, during assembly, the first insertion tongue 1302 will be inserted into the first positioning groove 1222 first to pre-position the front shell 13 and the backing plate 12, and then the clamping claw 1301 will be stuck in the clamping groove 1221 to complete the Assembly between shell 13 and backing plate 12 .

Wherein, the opening directions of the first positioning slot 1222 and the clamping slot 1221 are arranged away from each other. In this way, the connection part formed by the tongue and the card slot 1221 and the connection part formed by the first insertion tongue 1302 and the first positioning groove 1222 cooperate with each other, so that the front shell 13 can be installed and fixed on the lining plate 12 more firmly and reliably. on the outer wall.

In another embodiment, since the claws 1301 and the first insertion tongue 1302 are both located on the inner wall of the front shell 13, during assembly, the inner wall of the front shell 13 and the outer wall of the lining plate 12 cooperate with each other, making it difficult for the operator to put the first A plug tongue 1302 is accurately inserted into the positioning groove.

To this end, a first guide chute 124 and a second guide chute 125 may be provided on the outer surface of the lining plate 12 , the first guide chute 124 extends to the clamping slot 1221 , and the second guide chute 125 extends to the positioning slot.

Specifically, during assembly, the operator can first place the jaws 1301 in the first guide chute 124 , and at the same time make the first insertion tongue 1302 set in the second guide chute 125 .

Then, the operator will slide the front housing 13 along the first guide chute 124 and the second guide chute 125, so that the first insertion tongue 1302 is accurately inserted into the first positioning slot 1222, and finally the pawl 1301 is locked in the card slot 1221.

Under the guiding action of the first guide chute 124 and the second guide chute 125 , the guide chute can cooperate with the first insertion tongue 1302 and the clamping claw 1301 to guide the front housing 13 to slide.

Furthermore, in the early stage of installation, the distance between the front shell 13 and the lining plate 12 can be relatively far, so as to facilitate the operator to observe the positions of the claws 1301 and the first insertion tongues 1302, thereby ensuring the accurate placement of the clamping claws 1301 and the first insertion tongues 1302 in the corresponding guide chute.

Then, in the process of sliding along the guide chute, the distance between the front shell 13 and the lining plate 12 gradually decreases, and the operator relies on the guiding action of the guide chute to ensure that the first insertion tongue 1302 is inserted into the first in a positioning groove 1222.

Finally, the claws 1301 are locked in the slots 1221, so that the front shell 13 and the backing plate 12 are firmly connected together.

In other embodiments, in order to further improve the connection strength between the front shell 13 and the lining plate 12 , the following structural improvements are made to the front shell 13 .

The front shell 13 includes:

front panel 132;

the casing 131, the casing 131 is provided with a second clamping portion 130, and the casing 131 is further provided with a second through hole 133;

The backing plate 12 is also provided with second screw holes 123, the screws pass through the second through holes 133 and are threaded in the corresponding second screw holes 123, and the front panel 132 covers the second through holes 133 and is arranged in the front on panel 132.

Specifically, the front case 13 adopts a split design, and the case 131 as the main body is mounted on the lining plate 12 through the second clamping portion 130 in cooperation with the first clamping portion 122 . At the same time, the casing 131 and the lining plate 12 are further firmly connected together by screws. As for the screws connecting the housing 131 and the lining plate 12 , they are shielded by the front panel 132 , so as to meet the design requirement that no screws are exposed on the front of the housing 1 .

In one embodiment, the casing 131 is provided with a groove 134 , the second through hole 133 is located in the groove 134 , and the front panel 132 is provided in the groove 134 .

Specifically, a groove 134 is provided on the front surface of the housing 131 , and the front panel 132 is placed by using the groove 134 , so that the front surface of the housing 1 is more flat. At the same time, for the second through hole 133, the second through hole 133 is located in the groove 134. In this way, after the front panel 132 is assembled into the groove 134, the second through hole 133 can be blocked by the front panel 132. live.

In another embodiment, in order to realize the convenient and reliable installation of the front panel 132 on the housing 131, a slot 135 is further provided in the groove 134, and a second plug tongue 136 is provided on the front panel 132. in the corresponding slot 135.

Specifically, after the housing 131 is installed on the backing plate 12, the front panel 132 is inserted into the corresponding slot 135 through the plug tongues disposed on the front panel 132 to complete the installation. The insertion tongue and the slot 135 cooperate with each other, so that the front surface of the housing 1 can achieve the appearance effect of no exposed screws.

Among them, in order to further improve the connection reliability of the front panel 132, an extension portion 137 extending toward the backing plate 12 is provided on the front panel 132, and a third screw hole (not shown) is provided on the extension portion 137. 131 is provided with a counterbore (not shown), and a screw passes through the counterbore and is screwed into the third screw hole.

Specifically, in order to meet the requirements of appearance design, the extension portion 137 may be arranged on the upper or lower portion of the front panel 132 according to the different installation positions of the housing 1 . An extension 137 is formed at the bottom of the front panel 132. Correspondingly, a countersunk hole is provided at the bottom of the housing 131. After the front panel 132 is connected with the slot 135 through the insertion tongue, the front panel 132 is further connected by screws. Attach from the bottom.

Preferably, a detachable plug (not shown) may also be provided on the counterbore. After the front panel 132 is fixed on the housing 131 by screws, the plugs are used to cover the screws in the counterbore, and further The design that meets the front appearance of the housing 1 without exposed screws.

In some embodiments, in order to facilitate the operator to quickly assemble the lining plate 12 and the rear shell 11 together, the inner wall of the rear shell 11 is provided with a mounting table 112 , and the first threaded hole is provided on the mounting table 112 .

Specifically, during the assembly process, the mounting table 112 can support and position the lining plate 12, so as to facilitate the operator to quickly connect and assemble the lining plate 12 and the rear shell 11 together.

In another embodiment, in order to facilitate the positioning and assembling of the rear shell 11 and the lining plate 12 , a second positioning groove 113 may be provided on the mounting table 112 , and the edge of the lining plate 12 is clamped in the second positioning groove 113 .

Specifically, in the process of assembling the rear shell 11 and the lining board 12 , the rear shell 11 and the lining board 12 may be pre-assembled by inserting the edge of the lining board 12 into the second positioning groove 113 first.

Then, the relative positions between the rear case 11 and the backing plate 12 are adjusted so that the first through holes 121 are aligned with the first screw holes 111 .

Finally, a screw is passed through the first through hole 121 and screwed into the first screw hole 111 , so that the rear case 11 and the backing plate 12 are firmly and reliably assembled together.

Among them, in order to accurately locate the positional relationship between the rear shell 11 and the lining plate 12 to improve the assembly accuracy. A stepped surface 114 may be provided on the inner wall of the rear shell 11 , and a positioning rib 126 may be provided on the outer wall of the lining plate 12 , and the positioning rib 126 abuts on the stepped surface 114 .

Specifically, in the process of assembling the rear shell 11 and the lining plate 12 , refer to the above-mentioned process of pre-positioning through the positioning grooves, so that the rear shell 11 and the lining plate 12 are pre-assembled together. At the same time, after the edge of the lining plate 12 is inserted into the positioning groove, the positioning ribs 126 on the lining plate 12 will abut against the stepped surface 114, thereby enabling accurate positioning between the rear shell 11 and the lining plate 12. To improve the overall assembly quality of the housing components.

In a certain embodiment, the edge of the rear shell 11 is further provided with a retaining rib 115 , and the retaining rib 115 is located on the outer side of the stepped surface 114 , and the edge of the front shell 13 is provided with an extension edge 127 , and the extension edge 127 surrounds the outer side of the retaining rib 115 . .

Specifically, the front shell 13 can cover the entire outer surface of the lining board 12 , and the front shell 13 can completely block the lining board 12 outside the lining board 12 , thereby optimizing the visual effect of the appearance. Meanwhile, for the retaining rib 115 formed on the edge of the rear shell 11, on the one hand, during assembly, the retaining rib 115 can cooperate with the extension edge 127 for pre-positioning, so as to improve assembly efficiency and accuracy; on the other hand, the retaining rib 115 is composed of The extended edge 127 formed by the edge of the front case 13 is shielded, which is more conducive to improving the overall appearance effect.

In the preferred embodiment, for the butt joint area between the front shell 13 and the rear shell 11, the edge of the front shell 13 and the edge of the rear shell 11 are designed to be aligned, so as to reduce the generation of the front shell 13 and the rear shell 11 at the joint region. The size of the connection gap.

In addition, the number of connecting parts between the rear shell 11 and the lining plate 12 and the number of connecting parts between the front shell 13 and the lining plate 12 are mainly designed according to the overall size of the shell assembly.

For example, a plurality of mounting platforms 112 may be provided at the edge of the rear shell 11 , and the multiple mounting platforms 112 are distributed along the edge of the rear shell 11 .

Correspondingly, a number of first through holes 121 corresponding to the mounting table 112 are arranged on the lining plate 12 , so that the rear shell 11 and the lining plate 12 are connected and fixed by a plurality of screws.

Similarly, the number of snap-fit connections between the front shell 13 and the backing plate 12 is also provided in multiples, which is not limited here.

By using a lining plate to indirectly connect the front and rear casings, the lining plate and the rear casing are tightly connected by screws to meet the overall structural strength requirements of the casing, and the front casing is connected to the The lining plate is connected, and the front shell will cover the lining plate and then block the screws, so that the overall effect of the shell can achieve the appearance effect of no exposed screws, and the overall appearance of the shell is optimized to improve the user experience.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples," or the like, is meant to incorporate the embodiment. A particular feature, structure, material or characteristic described by way or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art can still The recorded technical solutions are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed in the present invention.

Claims (10)

1. A lining board for partition type electrical device installation is characterized in that, the lining board is provided with a mounting opening, and the lining board is also provided with a first installation groove and a second installation groove, and the first installation The grooves and the second installation grooves are spaced apart and located outside the installation opening. 2 . The partition type electrical device mounting liner according to claim 1 , wherein a first wiring groove is provided between the first mounting groove and the mounting opening, and the first wiring groove is provided between the first mounting groove and the mounting opening. A second wiring slot is arranged between the two-one installation slot and the installation port. 3 . The lining board for partition type electrical device installation according to claim 2 , wherein a first line card is provided in the first wiring groove, and a second line card is provided in the second wiring groove. 4 . . 4 . The lining board for installing a partitioned electrical device according to claim 1 , wherein an installation platform is further provided on the lining board. 5 . 5 . The lining board for installing a partitioned electrical device according to claim 4 , wherein the first installation groove is located on one side of the installation platform, and the second installation groove is located on the other side of the installation platform. 6 . side. 6 . The lining board for installation of a partitioned electrical device according to claim 5 , wherein a third wiring slot is further provided between the first installation slot and the second installation slot, and the third The wiring trough is arranged on one side of the installation platform. 7 . The lining board for mounting a partitioned electrical device according to claim 6 , wherein the mounting opening is located above the mounting platform, and the third wiring groove is arranged below the mounting platform. 8 . 8 . The lining board for installing a partitioned electrical device according to claim 6 , wherein a third line card is arranged in the third wiring groove. 9 . 9. A casing comprising a rear casing and a front casing, characterized in that further comprising a lining plate for installing a partitioned electrical device according to any one of claims 1-8; the lining plate is arranged on the rear casing In the above, the front shell is arranged on the lining plate and covers the lining plate. 10. An electric water heater, comprising an inner pot, an electric heating component, a power supply board and a thermostat, characterized in that it comprises the outer shell as claimed in claim 9; the inner pot is arranged in the outer shell, and the electric The heating component is arranged on the inner tank, the power board is arranged in the first installation groove in the outer shell and is connected with the electric heating component through a wire harness, and the temperature controller is arranged in the first installation groove in the outer shell. The two are installed in the slot and connected with the electric heating component through a wire harness.

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