CN216347092U

CN216347092U - Water heater

Info

Publication number: CN216347092U
Application number: CN202122471961.9U
Authority: CN
Inventors: 李志达; 蔡想周; 杨涛; 周瑞; 王锦超; 盛保敬; 毕颖
Original assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Haier Smart Home Co Ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-04-19
Anticipated expiration: 2031-10-14

Abstract

The utility model belongs to the technical field of household appliances, and particularly relates to a water heater. The utility model aims to solve the problem that threads on the hole wall of a connecting hole on a shell are easy to deform. The water heater comprises a shell, a connecting piece and an electricity-proof wall cover, wherein the electricity-proof wall cover is connected with the shell through the connecting piece; prevent that electric wall covers and is provided with the second connecting hole, connecting bolt passes behind the second connecting hole and is connected with first connecting hole, and the axial length of first connecting hole is greater than the wall thickness of casing. Through the above setting, pass the direct and casing behind the second connecting hole with connecting bolt and be connected and compare, increased the area of contact of connecting bolt with the connecting piece to reduced the atress on the first connecting hole pore wall unit area, made the difficult emergence of screw thread on the first connecting hole pore wall warp, thereby easily later stage dismantlement and change prevent the electric wall cover.

Description

Water heater

Technical Field

The embodiment of the utility model belongs to the technical field of household appliances, and particularly relates to a water heater.

Background

The water heater is a common electric appliance in daily life, and can heat cold water into hot water with a proper temperature for users to use.

In the related technology, the water heater comprises a shell, an inner container, an electricity-proof wall and an electricity-proof wall cover, wherein the inner container is arranged inside the shell, the bottom of the inner container is provided with a water inlet pipe and a water outlet pipe, the top ends of the water inlet pipe and the water outlet pipe are connected with the inner container, and the bottom ends of the water inlet pipe and the water outlet pipe extend out of the shell and are connected with the electricity-proof wall. The electricity-proof wall cover is covered outside the electricity-proof wall, the electricity-proof wall cover is provided with a clamping jaw and a connecting column, the shell is provided with a clamping hole and a connecting hole, and the clamping jaw penetrates through the clamping hole and abuts against the inner wall of the shell so as to pre-position the electricity-proof wall cover; and the self-tapping screw is screwed into the connecting column along the central line of the connecting column and is connected with the connecting hole, so that the electricity-proof wall cover is fixed on the shell.

However, since the tightening force of the tapping screw is mainly applied around the attachment hole and the thickness of the case is small, the deformation of the thread on the wall of the attachment hole is easily caused, and it is not easy to detach and replace the electricity-proof wall cover.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems in the prior art, that is, to solve the problem that the threads on the wall of the connecting hole on the casing are easy to deform, an embodiment of the present invention provides a water heater, including: the shell is cylindrical and is connected with the connecting piece, the connecting piece comprises a first connecting block, and a first connecting hole is formed in the first connecting block and extends along the radial direction of the shell; the electricity-proof wall cover is provided with a second connecting hole, a connecting bolt penetrates through the second connecting hole and then is connected with the first connecting hole, and the axial length of the first connecting hole is larger than the wall thickness of the shell.

In the preferable technical scheme of the water heater, a connecting nut is embedded into the first connecting block, and the first connecting hole comprises an internal thread hole in the connecting nut.

In the above preferred technical solution of the water heater, the first connection hole includes an internal thread hole provided on the first connection block.

In a preferred embodiment of the above water heater, the housing is detachably connected to the connecting member.

In the preferred technical scheme of the water heater, the shell is provided with a first clamping hole and a second clamping hole, the first clamping hole and the second clamping hole penetrate through the shell, the second clamping hole is located at the bottom end of the first clamping hole, and the first clamping hole is communicated with the second clamping hole; first link block has first lateral wall, second lateral wall and third lateral wall, first connecting hole runs through first lateral wall, the second lateral wall with the third lateral wall all with first lateral wall is adjacent, just the second lateral wall with the third lateral wall is relative, be provided with first draw-in groove on the second lateral wall, be provided with the second draw-in groove on the third lateral wall, first link block is used for penetrating first calorie of hole and follow first calorie of hole slips in the second card hole, the part of second card hole one end the casing is slided and is established in the first draw-in groove, the part of second card hole other end the casing is slided and is established in the second draw-in groove.

In an optimal technical solution of the above water heater, when the first connecting block penetrates into the first clamping hole, a projection of the first connecting block on the housing at a lower portion of the first clamping groove and a lower portion of the second clamping groove is located in the first clamping hole, and an outer edge of a projection of the first connecting block on the housing at an upper portion of the first clamping groove and a upper portion of the second clamping groove is located outside the first clamping hole.

In the above preferred technical solution of the water heater, the connecting member further includes a second connecting block, the second connecting block is connected to the first connecting block, and the second connecting block is located outside the housing; the inboard of preventing electric wall cover is provided with the third connecting block, the third connecting block with the second connecting block is connected, just the third connecting block can for the second connecting block slides.

In the preferable technical scheme of the water heater, a sliding hole is formed in the third connecting block, and the second connecting block is arranged in the sliding hole in a sliding mode.

In a preferred technical solution of the above water heater, the first connecting block further has a fourth side wall adjacent to the first side wall, the fourth side wall is located between the second side wall and the third side wall, the fourth side wall is located at a top end of the first side wall, and the second connecting block is disposed on the fourth side wall.

In the preferable technical scheme of the water heater, a reinforcing rib is arranged on one side of the second connecting block facing the shell, and the extending direction of the reinforcing rib is parallel to the sliding direction of the second connecting block in the sliding hole; the third connecting block orientation one side of casing is provided with dodges the mouth, dodge the mouth with the slide opening intercommunication, dodge the mouth and be used for supplying the strengthening rib passes.

The water heater comprises a shell, a connecting piece and an electricity-proof wall cover, wherein the shell is cylindrical, the shell is connected with the connecting piece, the connecting piece comprises a first connecting block, a first connecting hole is formed in the first connecting block, and the first connecting hole extends along the radial direction of the shell; prevent that electric wall covers and is provided with the second connecting hole, connecting bolt passes behind the second connecting hole and is connected with first connecting hole, and the axial length of first connecting hole is greater than the wall thickness of casing. Through the setting, because the axial length of the first connecting hole on the connecting piece is greater than the wall thickness of the casing, pass the direct and casing with connecting bolt and be connected after the second connecting hole and compare, increased the area of contact of connecting bolt with the connecting piece to reduced the atress on the first connecting hole pore wall unit area, made the difficult emergence of screw thread on the first connecting hole pore wall warp, thereby easily later stage dismantlement and change prevent the electric wall cover.

Drawings

Preferred embodiments of the water heater of the present invention will be described below with reference to the accompanying drawings. The attached drawings are as follows:

FIG. 1 is a first schematic structural diagram of a water heater according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram II of a water heater according to an embodiment of the present invention;

FIG. 3 is a first schematic structural view of an electricity-proof wall cover in a water heater according to an embodiment of the present invention;

FIG. 4 is a schematic structural view II of the electricity-proof wall cover in the water heater according to the embodiment of the present invention;

FIG. 5 is a first schematic structural diagram of a connection member and a housing of a water heater according to an embodiment of the present invention;

FIG. 6 is an enlarged schematic view at P1 in FIG. 5;

FIG. 7 is a second schematic structural view illustrating a connection member and a housing of the water heater according to the embodiment of the present invention;

FIG. 8 is an enlarged schematic view at P2 in FIG. 7;

FIG. 9 is a first schematic structural diagram of a connector in a water heater according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram II of a connecting member of the water heater according to the embodiment of the present invention;

FIG. 11 is a schematic structural view showing the connection between the electricity-proof wall cover and the connecting member in the water heater according to the embodiment of the present invention.

In the drawings:

100. a housing; 200. A connecting member;

300. an electricity-proof wall cover; 101. A first card hole;

102. a second card hole; 210. A first connection block;

211. a first connection hole; 212. A connecting nut;

213. a first side wall; 214. A second side wall;

215. a third side wall; 216. A fourth side wall;

217. a first card slot; 218. A second card slot;

220. a second connecting block; 221. Reinforcing ribs;

301. a first connecting column; 302. A second connection hole;

303. a third connecting block; 304. A slide hole;

305. avoiding the mouth; 306. A second connecting column.

Detailed Description

First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications.

Next, it should be noted that in the description of the embodiments of the present invention, the terms of direction or positional relationship indicated by the terms "inside", "outside", and the like are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or member must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. Specific meanings of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In order to make the objects, 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 drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the related technology, the water heater comprises a shell, an inner container, an electricity-proof wall and an electricity-proof wall cover, wherein the shell is cylindrical, the inner container is arranged in the shell, the bottom of the inner container is connected with a water inlet pipe and a water outlet pipe, the top ends of the water inlet pipe and the water outlet pipe are connected with the bottom of the inner container, cold water enters the inner container from the water inlet pipe, and hot water is discharged from the water outlet pipe out of the inner container after being heated in the inner container. The bottom ends of the water inlet pipe and the water outlet pipe extend out of the shell and are connected with the electricity-proof wall.

The electricity-proof wall, namely a water resistance attenuation isolation method, increases the resistance of water by prolonging a water channel, reduces the current in the water under the condition that the household voltage is not changed, and lightens the harm of leakage current to human bodies. Meanwhile, the damage to the human body due to the electrification of the ground wire and the water pipe can be reduced.

The electricity-proof wall cover is covered outside the electricity-proof wall, the electricity-proof wall cover is provided with a clamping jaw and a connecting column, the shell is provided with a clamping hole and a connecting hole, and the clamping jaw penetrates through the clamping hole and abuts against the inner wall of the shell so as to pre-position the electricity-proof wall cover and the shell; after pre-positioning, the self-tapping screw is screwed into the connecting column and the connecting hole along the central line of the connecting column so as to fix the electricity-proof wall cover on the shell.

However, the tightening force of the tapping screw is mainly applied to the threads on the hole wall of the connecting hole, the wall thickness of the shell where the connecting hole is located is small, the surface area of the hole wall of the connecting hole is small, the stress on the unit area of the hole wall of the connecting hole is large, the threads on the hole wall of the connecting hole are easy to deform, and the electricity-proof wall cover is not easy to disassemble in the later period.

Moreover, after the electricity-proof wall cover and the shell are disassembled and assembled for many times, the connecting column and the connecting hole are easy to slide, so that the electricity-proof wall cover cannot be installed on the shell.

This embodiment provides a water heater, through set up the connecting piece between casing and electricity-proof wall cover, is provided with first connecting hole on the connecting piece, and connecting bolt passes and is connected with first connecting hole behind the electricity-proof wall cover, and the axial length of first connecting hole is greater than the wall thickness of casing to make the difficult emergence of first connecting hole warp, convenient to detach prevents the electricity-proof wall cover.

The principles and features of embodiments of the present invention are described below in conjunction with the following drawings, which are presented by way of example only to illustrate embodiments of the present invention and not to limit the scope of embodiments of the present invention.

As shown in fig. 1, the water heater provided by the embodiment of the present invention includes a casing 100, an inner container, an electricity-proof wall cover 300 and a connecting member 200, wherein the casing 100 is cylindrical, the inner container is disposed in the casing 100, the bottom of the inner container is connected with a water inlet short pipe and a water outlet short pipe, the top ends of the water inlet short pipe and the water outlet short pipe are connected to the bottom of the inner container, cold water enters the inner container from the water inlet short pipe, is heated in the inner container, and is discharged out of the inner container from the water outlet short pipe. The bottom of casing 100 is provided with water inlet and delivery port (not shown in the figure), and the inlet nozzle stub is worn to establish in the inlet, and the outlet nozzle stub is worn to establish in the outlet, and the bottom of inlet nozzle stub and outlet nozzle stub all extends to outside the casing 100, all is connected with between inlet nozzle stub and the inlet tube and between outlet nozzle stub and the outlet pipe and prevents the electric wall.

The electricity-proof wall increases the resistance of water by prolonging the water channel, reduces the current in the water under the condition that the household voltage is not changed, and reduces the harm of the leakage current of the water heater to users. Meanwhile, the damage to users due to the fact that the ground wire and the water pipe are electrified can be reduced, and the safety of the water heater is improved.

The electricity-proof wall cover 300 covers the outside of the electricity-proof wall to shield the electricity-proof wall, so as to improve the decorative effect of the water heater. The electricity-proof wall cover 300 is connected with the casing 100 through a connecting member 200, and the connecting member 200 is connected to the casing 100. As shown in fig. 2 and 3, the electricity-proof wall cover 300 is provided with a second connection hole 302, and the second connection hole 302 is used for connecting with the connection member 200.

As shown in fig. 4, the inner side of the electricity-proof wall cover 300 may be provided with a first connecting column 301, the second connecting hole 302 may penetrate the first connecting column 301 along the axial direction of the first connecting column 301, and the second connecting hole 302 may be a counter bore, so that the outer surface of the electricity-proof wall cover 300 is flat, thereby improving the decorative effect of the water heater.

Of course, the second connecting hole 302 may be directly opened on the electricity-proof wall cover 300.

As shown in fig. 5 to 8, the connection member 200 includes a first connection block 210, a first connection hole 211 is provided on the first connection block 210, the first connection hole 211 extends along the radial direction of the housing 100, the axial length of the first connection hole 211 is greater than the wall thickness of the housing 100, and a connection bolt passes through the second connection hole 302 and then is connected to the first connection hole 211 to fix the electricity-proof wall cover 300 to the connection member 200.

Because the axial length of the first connecting hole 211 on the connecting piece 200 is greater than the wall thickness of the casing 100, directly connect with the casing 100 after the connecting bolt passes through the second connecting hole 302 and compare, increased the area of contact of connecting bolt and connecting piece 200, thereby reduced the atress on the first connecting hole 211 pore wall unit area, make the screw thread on the first connecting hole 211 pore wall difficult emergence warp, thereby easy later stage normal dismantlement prevents electric wall cover 300, has prolonged the life of water heater.

The water heater in the embodiment comprises a shell 100, a connecting piece 200 and an electricity-proof wall cover 300, wherein the shell 100 is cylindrical, the shell 100 is connected with the connecting piece 200, the connecting piece 200 comprises a first connecting block 210, a first connecting hole 211 is formed in the first connecting block 210, and the first connecting hole 211 extends along the radial direction of the shell 100; be provided with second connecting hole 302 on the electricity-proof wall cover 300, connecting bolt passes behind second connecting hole 302 and is connected with first connecting hole 211, and the axial length of first connecting hole 211 is greater than the wall thickness of casing 100. Through the above setting, because the axial length of the first connecting hole 211 on the connecting piece 200 is greater than the wall thickness of the casing 100, pass through the second connecting hole 302 with connecting bolt and then directly be connected with the casing 100 and compare, the area of contact of connecting bolt and connecting piece 200 has been increased, thereby the atress on the unit area of the first connecting hole 211 pore wall has been reduced, the difficult emergence of screw thread on the messenger first connecting hole 211 pore wall is out of shape, thereby easy later stage normal dismantlement prevents electric wall cover 300, the life of water heater has been prolonged.

As shown in fig. 8-10, in some embodiments, the first connection block 210 has a coupling nut 212 embedded therein, and the first connection hole 211 comprises an internally threaded hole in the coupling nut 212.

Connecting nut 212 inlays in first connecting block 210, can set up towards the inside sunken recess of first connecting block 210 in one side that first connecting block 210 deviates from preventing electric wall cover 300, connecting nut 212 holding is in this recess, this recess sets up the through-hole that communicates with this recess towards preventing on the first connecting block 210 of one side of electric wall cover 300, can set up the internal thread on the pore wall of through-hole and also can not set up the internal thread, connecting bolt passes behind second connecting hole 302 and this through-hole and is connected with connecting nut 212, in order to prevent electric wall cover 300 fixed to connecting piece 200 on. The coupling nut 212 has a length in the axial direction greater than the wall thickness of the housing 100 so that the internal threads of the coupling nut 212 are not easily deformed.

In some embodiments, the first coupling hole 211 includes an internally threaded hole provided on the first coupling block 210, to which a coupling bolt is coupled after passing through the second coupling hole 302, thereby fixing the electricity-proof wall cover 300 to the coupling member 200. The length of the female screw hole in the axial direction is greater than the wall thickness of the housing 100, so that the female screw hole is less likely to be deformed.

Alternatively, the coupling bolt may be a tapping screw, and the inner wall of the first coupling hole 211 may not be provided with a thread.

In some embodiments, the housing 100 is removably coupled to the connector 200. Specifically, with continued reference to fig. 5-8, the housing 100 is provided with a first engaging hole 101 and a second engaging hole 102, the first engaging hole 101 and the second engaging hole 102 penetrate through the housing 100, the second engaging hole 102 is located at the bottom end of the first engaging hole 101, and the first engaging hole 101 is communicated with the second engaging hole 102.

With continued reference to fig. 9 and 10, the first connecting block 210 has a first sidewall 213, a second sidewall 214, and a third sidewall 215, the first connecting hole 211 penetrates through the first sidewall 213, the second sidewall 214 and the third sidewall 215 are both adjacent to the first sidewall 213, the second sidewall 214 is opposite to the third sidewall 215, the second sidewall 214 is provided with a first engaging groove 217, the third sidewall 215 is provided with a second engaging groove 218, the first connecting block 210 is configured to penetrate the first engaging hole 101 and slide into the second engaging hole 102 from the first engaging hole 101, when the first connecting block 210 slides into the second engaging hole 102, a portion of the housing 100 at one end of the second engaging hole 102 slides into the first engaging groove 217, and a portion of the housing 100 at the other end of the second engaging hole 102 slides into the second engaging groove 218.

The projections of the first engaging hole 101 and the second engaging hole 102 on the horizontal plane may be both rectangular, and the width of the first engaging hole 101 along the direction perpendicular to the sliding direction of the first connecting block 210 is greater than the width of the second engaging hole 102 along the direction perpendicular to the sliding direction of the first connecting block 210. The first connecting block 210 can penetrate into the first clamping hole 101, in the process that the first connecting block 210 slides from the first clamping hole 101 to the second clamping hole 102, the second clamping hole 102 slides along the first clamping groove 217 of the partial shell 100 at one end perpendicular to the sliding direction of the first connecting block 210, and the second clamping hole 102 slides along the second clamping groove 218 of the partial shell 100 at the other end perpendicular to the sliding direction of the first connecting block 210 until the bottom end of the first connecting block 210 abuts against the shell 100 at the bottom end of the second clamping hole 102.

Further, when the first connecting block 210 penetrates into the first card hole 101, a projection of the first connecting block 210 at a lower portion of the first card slot 217 and the second card slot 218 on the housing 100 is located in the first card hole 101, and an outer edge of a projection of the first connecting block 210 at a lower portion of the first card slot 217 and the second card slot 218 on the housing 100 is located outside the first card hole 101.

That is to say, only the part of the first connecting block 210 located at the lower parts of the first card slot 217 and the second card slot 218 can penetrate into the first card hole 101, and the part of the first connecting block 210 located at the upper parts of the first card slot 217 and the second card slot 218 cannot penetrate into the first card hole 101, so that the connecting piece 200 can only be installed and disassembled through the inner side of the casing 100, and the connecting piece 200 cannot be taken down from the outer side of the casing 100, thereby avoiding the connecting piece 200 from being separated from the casing 100, and enabling the connection between the connecting piece 200 and the casing 100 to be more stable.

Alternatively, the outer side of the housing 100 may be provided with a slot, and the side of the first connecting block 210 facing the housing 100 may be provided with an insertion block, which is inserted into the slot from the top of the slot to realize the detachable connection of the first connecting block 210 and the housing 100.

With continued reference to fig. 5 and 6, in some embodiments, the connector 200 further includes a second connector block 220, the second connector block 220 being connected to the first connector block 210, the second connector block 220 being located outside the housing 100.

With continued reference to FIG. 4, the inner side of the electricity-proof wall cover 300 is provided with a third connecting block 303, the third connecting block 303 is connected with the second connecting block 220, and the third connecting block 303 can slide relative to the second connecting block 220.

The second connecting block 220 may be disposed on the second sidewall 214 at the bottom of the first locking groove 217, and the second connecting block 220 may also be disposed on the third sidewall 215 at the bottom of the second locking groove 218.

With continued reference to fig. 4, a sliding hole 304 is provided in the third connecting block 303, the second connecting block 220 is slidably provided in the sliding hole 304 (as shown in fig. 11) to pre-position the electricity-proof wall cover 300 and the connecting member 200, and after pre-positioning, the electricity-proof wall cover 300 and the connecting member 200 are fixed by a connecting bolt, so as to install the electricity-proof wall cover 300 and the connecting member 200.

Of course, a slide way can be arranged in the second connecting block 220, and the third connecting block 303 is arranged in the slide way in a sliding way, so as to pre-position the electricity-proof wall cover 300 and the connecting piece 200.

With continued reference to figures 9 and 10, in some embodiments, the first connecting block 210 further has a fourth side wall 216 adjacent to the first side wall 213, the fourth side wall 216 is located between the second side wall 214 and the third side wall 215, and the fourth side wall 216 is located at the top end of the first side wall 213, and the second connecting block 220 is disposed on the fourth side wall 216, so that the sliding direction of the connecting member 200 when connected with the housing 100 is identical to the sliding direction of the electricity-proof wall cover 300 when connected with the connecting member 200, facilitating the installation and removal of the electricity-proof wall cover 300.

With continued reference to fig. 9 and 10, in some embodiments, a side of the second connecting block 220 facing the casing 100 is provided with a rib 221, the rib 221 extends in a direction parallel to the sliding direction of the second connecting block 220 in the sliding hole 304, and the rib 221 is also located outside the casing 100; the third connecting block 303 is provided with an avoiding opening 305 towards one side of the housing 100, the avoiding opening 305 is communicated with the sliding hole 304, and the avoiding opening 305 is used for the reinforcing rib 221 to pass through.

One side of strengthening rib 221 is connected with second connecting block 220, and the opposite side of strengthening rib 221 is connected with first connecting block 210, and strengthening rib 221 makes the connection of second connecting block 220 and first connecting block 210 more firm, avoids second connecting block 220 to warp or separate with first connecting block 210.

When the electricity-proof wall cover 300 is installed with the connecting piece 200, one end of the second connecting block 220 departing from the first connecting block 210 is inserted into the sliding hole 304, one end of the reinforcing rib 221 departing from the first connecting block 210 penetrates through one end of the avoiding opening 305, then the electricity-proof wall cover 300 slides towards the first connecting block 210 until one end of the third connecting block 303 close to the second connecting hole 302 abuts against the fourth side wall 216, which represents that the pre-positioning of the electricity-proof wall cover 300 and the connecting piece 200 is completed, and then the connecting bolt penetrates through the second connecting hole 302 and then is connected with the first connecting hole 211, so that the electricity-proof wall cover 300 is fixed on the connecting piece 200.

One side of the third connecting block 303, which is far away from the connecting piece 200, and the electricity-proof wall cover 300 can be connected through a second connecting column 306, so that the distance between the third connecting block 303 and the connecting piece 200 is reduced, and the third connecting block 303 and the connecting piece 200 are convenient to install.

In summary, the water heater in the embodiment of the present invention includes the casing 100, the connecting member 200 and the electricity-proof wall cover 300, the casing 100 is cylindrical, the casing 100 is connected to the connecting member 200, the connecting member 200 includes the first connecting block 210, the first connecting block 210 is provided with the first connecting hole 211, and the first connecting hole 211 extends along the radial direction of the casing 100; be provided with second connecting hole 302 on the electricity-proof wall cover 300, connecting bolt passes behind second connecting hole 302 and is connected with first connecting hole 211, and the axial length of first connecting hole 211 is greater than the wall thickness of casing 100. Through the above setting, because the axial length of the first connecting hole 211 on the connecting piece 200 is greater than the wall thickness of the casing 100, pass through the second connecting hole 302 with connecting bolt and then directly be connected with the casing 100 and compare, the area of contact of connecting bolt and connecting piece 200 has been increased, thereby the atress on the unit area of the first connecting hole 211 pore wall has been reduced, the difficult emergence of screw thread on the messenger first connecting hole 211 pore wall is out of shape, thereby easy later stage normal dismantlement prevents electric wall cover 300, the life of water heater has been prolonged.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water heater, comprising: the shell is cylindrical and is connected with the connecting piece, the connecting piece comprises a first connecting block, and a first connecting hole is formed in the first connecting block and extends along the radial direction of the shell; the electricity-proof wall cover is provided with a second connecting hole, a connecting bolt penetrates through the second connecting hole and then is connected with the first connecting hole, and the axial length of the first connecting hole is larger than the wall thickness of the shell.

2. The water heater of claim 1, wherein a coupling nut is embedded in the first coupling block, and the first coupling hole comprises an internally threaded hole in the coupling nut.

3. The water heater according to claim 1, wherein the first connection hole comprises an internally threaded hole provided on the first connection block.

4. The water heater according to claim 1, wherein the housing is removably connected to the connector.

5. The water heater according to claim 4, wherein a first clamping hole and a second clamping hole are arranged on the shell, the first clamping hole and the second clamping hole penetrate through the shell, the second clamping hole is located at the bottom end of the first clamping hole, and the first clamping hole is communicated with the second clamping hole;

first link block has first lateral wall, second lateral wall and third lateral wall, first connecting hole runs through first lateral wall, the second lateral wall with the third lateral wall all with first lateral wall is adjacent, just the second lateral wall with the third lateral wall is relative, be provided with first draw-in groove on the second lateral wall, be provided with the second draw-in groove on the third lateral wall, first link block is used for penetrating first calorie of hole and follow first calorie of hole slips in the second card hole, the part of second card hole one end the casing is slided and is established in the first draw-in groove, the part of second card hole other end the casing is slided and is established in the second draw-in groove.

6. The water heater according to claim 5, wherein when the first connection block penetrates into the first clamping hole, a projection of the first connection block on the shell at a lower part of the first clamping groove and the second clamping groove is positioned in the first clamping hole, and an outer edge of a projection of the first connection block on the shell at an upper part of the first clamping groove and the second clamping groove is positioned outside the first clamping hole.

7. The water heater of claim 6, wherein the connection member further comprises a second connection block connected to the first connection block, the second connection block being located outside the housing;

the inboard of preventing electric wall cover is provided with the third connecting block, the third connecting block with the second connecting block is connected, just the third connecting block can for the second connecting block slides.

8. The water heater of claim 7, wherein a slide hole is formed in the third connecting block, and the second connecting block is slidably disposed in the slide hole.

9. The water heater according to claim 8, wherein the first connection block further has a fourth side wall adjacent to the first side wall, the fourth side wall being located between the second side wall and the third side wall, and the fourth side wall being located at a top end of the first side wall, the second connection block being disposed on the fourth side wall.

10. The water heater according to claim 8, wherein a side of the second connecting block facing the housing is provided with a reinforcing rib, and the extending direction of the reinforcing rib is parallel to the sliding direction of the second connecting block in the sliding hole; the third connecting block orientation one side of casing is provided with dodges the mouth, dodge the mouth with the slide opening intercommunication, dodge the mouth and be used for supplying the strengthening rib passes.