CN221205333U - Reinforced washing structure and dish washer - Google Patents

Abstract

The utility model discloses a reinforced washing structure and a dish washer, comprising a washing mechanism and a reinforced washing mechanism; the cleaning mechanism comprises a first water supply connector and a lower spray arm, and a water inlet of the lower spray arm is communicated with a water outlet of the first water supply connector; the reinforced washing mechanism comprises a second water supply joint and a reinforced washing assembly; the water inlet end of the second water supply connector is connected with the water outlet end of the first water supply connector; the reinforced washing component is fixedly arranged on the lower bowl basket of the dish washing machine through a fixing piece and comprises a water diversion pipe, at least one conveying pipe and at least one reinforced washing component; the water inlet end of the water diversion pipe is detachably connected with the water outlet end of the second water supply joint, the water outlet end of the water diversion pipe is provided with at least one connecting pipe communicated with the water outlet end of the water diversion pipe, and the water inlet end of the conveying pipe is connected with the water outlet end of the connecting pipe; the reinforced washing part is communicated with the water outlet end of the conveying pipe. The reinforced washing structure and the dish washing machine can thoroughly wash heavy-polluted tableware by matching the lower spray arm and the reinforced washing part by respectively guiding water flow to the lower spray arm and the reinforced washing part.

Description

Reinforced washing structure and dish washer

Technical Field

The utility model relates to the technical field of household appliances, in particular to a reinforced washing structure and a dish washer.

Background

In order to clean tableware loaded in two layers of bowl baskets in a dish washer well, an upper spray arm, a middle spray arm and a lower spray arm are arranged in the dish washer from top to bottom in sequence, an upper layer bowl basket is positioned between the upper spray arm and the middle spray arm, a lower layer bowl basket is positioned between the middle spray arm and the lower spray arm, water flow is sprayed out of the upper spray arm, the middle spray arm and the lower spray arm to clean the tableware, but the cleaning mode only plays a good cleaning role on the tableware with medium and light pollution, the condition of unclean cleaning still easily occurs when the tableware with heavy pollution is cleaned, so that the overall cleaning effect is reduced, and the user experience is poor.

Accordingly, the prior art is subject to improvement and development.

Disclosure of utility model

The utility model aims to provide a reinforced washing structure and a dish washer, which can improve the cleaning effect and ensure the use experience of users.

In a first aspect, the present utility model provides a reinforced washing structure, comprising: a cleaning mechanism and a reinforcing cleaning mechanism;

The cleaning mechanism comprises a first water supply joint and a lower spray arm, and a water inlet of the lower spray arm is communicated with a water outlet of the first water supply joint;

The reinforced washing mechanism comprises a second water supply joint and a reinforced washing assembly; the water inlet end of the second water supply joint is connected with the water outlet end of the first water supply joint; the reinforced washing component is fixedly arranged on the lower bowl basket of the dish washing machine through a fixing piece and comprises a water diversion pipe, at least one conveying pipe and at least one reinforced washing part; the water inlet end of the water diversion pipe is detachably connected with the water outlet end of the second water supply joint, the water outlet end of the water diversion pipe is provided with at least one connecting pipe communicated with the water outlet end of the water diversion pipe, and the water inlet end of the conveying pipe is connected with the water outlet end of the connecting pipe; the reinforcing washing part is communicated with the water outlet end of the conveying pipe.

According to the utility model, water flow is respectively guided to the lower spray arm and the reinforced washing part through the first water supply joint, the second water supply joint, the water diversion pipe, the connecting pipe and the conveying pipe, so that the water flow is respectively sprayed out by the lower spray arm and the reinforced washing part and acts on severely polluted tableware placed in a preset area in the lower bowl basket, and the severely polluted tableware can be thoroughly cleaned.

According to an embodiment of the present utility model, a water passing hole is formed in a side wall of the first water supply connector, the lower spray arm is sleeved on the first water supply connector, and a water inlet of the lower spray arm is communicated with the water passing hole.

According to one embodiment of the present utility model, a sealing ring is provided inside the water inlet end of the water diversion pipe, the sealing ring is provided at the inner edge of the sealing ring, and the caliber of the sealing ring gradually increases or gradually decreases along the axial direction of the sealing ring, so that the outer side wall of the second water supply joint abuts against the sealing ring when the second water supply joint is connected with the water diversion pipe.

According to one embodiment of the utility model, a limiting plate abutted with the sealing ring is arranged in the water inlet end of the water diversion pipe, and the limiting plate is positioned on one side of the sealing ring away from the water outlet end of the water diversion pipe.

According to an embodiment of the present utility model, the fixing member includes a plurality of connection buckles, and the plurality of connection buckles are disposed on the water diversion pipe and/or the delivery pipe.

According to an embodiment of the present utility model, a connection clamping block is disposed on an outer side wall of the water inlet end of the conveying pipe, a connection bayonet is disposed on a side wall of the connecting pipe, and the connection clamping block is clamped on the connection bayonet.

According to an embodiment of the present utility model, the reinforcing washing component includes a reinforcing washing arm, the reinforcing washing arm is rotatably disposed at a water outlet end of the conveying pipe through a connection assembly, the upper surface of the reinforcing washing arm is provided with a plurality of water outlet holes, and the orientations of the water outlet holes are different, so that the reinforcing washing arm can be driven to rotate when water is sprayed from the water outlet holes

According to an embodiment of the present utility model, the connecting assembly includes a rotating shaft and a fixing base; one end of the rotating shaft is connected with the reinforced washing and spraying arm; the fixed seat is sleeved on the rotating shaft and is connected with the water outlet end of the conveying pipe.

In a second aspect, the utility model provides a dish washer, which comprises a housing, an upper bowl basket, a lower bowl basket, an upper spray arm, a middle spray arm, the reinforced washing structure of the first aspect, wherein the lower spray arm is positioned below the lower bowl basket, and the fixing piece is arranged on the lower bowl basket.

According to an embodiment of the present utility model, the dishwasher further comprises at least one washing spray arm rotatably disposed on the bottom side wall of the housing in a region adjacent to the back side wall of the housing.

The beneficial effects of the utility model are as follows: according to the reinforced washing structure and the dish washing machine, water flows are respectively led to the lower spray arm and the reinforced washing part through the first water supply connector, the second water supply connector, the water distribution pipe, the connecting pipe and the conveying pipe, so that the water flows are respectively sprayed out by the lower spray arm and the reinforced washing part and act on severely polluted tableware placed in a preset area in the lower bowl basket, the severely polluted tableware can be cleaned, the overall cleaning effect is improved, and the use experience of a user is ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic structural diagram of an enhanced washing structure in an embodiment of the present utility model;

FIG. 2 is a schematic view of a water diversion pipe and a conveying pipe with a reinforced washing structure mounted on a lower bowl basket in the embodiment of the utility model;

FIG. 3 is an exploded view of the enhanced wash structure in an embodiment of the utility model;

FIG. 4 is a top view of an enhanced wash structure in an embodiment of the utility model;

FIG. 5 is a partial cross-sectional view of A-A of FIG. 4;

FIG. 6 is a partial cross-sectional view of B-B of FIG. 4;

FIG. 7 is an enlarged view at A of FIG. 6;

FIG. 8 is a schematic view showing a structure of a dishwasher in accordance with an embodiment of the present utility model;

FIG. 9 is a schematic view of the lower basket of the dishwasher drawn out of the housing in accordance with an embodiment of the present utility model;

Fig. 10 is a schematic view of a structure of a dishwasher removing housing in an embodiment of the present utility model.

Reference numerals illustrate:

1. A first water supply joint; 11. a water passing hole; 2. a second water supply joint; 21. a guide section; 3. a water diversion pipe; 31. a fixed bayonet; 32. an opening; 4. a delivery tube; 41. connecting a clamping block; 5. a connecting pipe; 51. a connection bayonet; 6. strengthening the washing and spraying arm; 61. a water outlet hole; 7. a connection assembly; 71. a rotating shaft; 72. a fixing seat; 8. a seal ring; 81. a seal ring; 9. a limiting plate; 91. fixing the clamping block; 10. a fixing member; 100. a housing; 200. an upper bowl basket; 300. a lower bowl basket; 400. an upper spray arm; 500. a middle spray arm; 600. a lower spray arm; 700. and cleaning the spray arm.

Detailed Description

Various embodiments of the utility model are disclosed in the following drawings, in which details of the practice are set forth in the following description for the purpose of clarity. However, it should be understood that these practical details are not to be taken as limiting the utility model. That is, in some embodiments of the utility model, these practical details are unnecessary. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the utility model solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

For a further understanding of the nature, features, and efficacy of the present utility model, the following examples are set forth in order to provide a further understanding of the utility model, and are intended to be described in connection with the accompanying drawings:

In a first aspect, as shown in fig. 1, 2 and 3, the present utility model provides a reinforced washing structure, which includes a washing mechanism and a reinforced washing mechanism.

The cleaning mechanism comprises a first water supply connector 1 and a lower spray arm 600, wherein a water inlet of the lower spray arm 600 is communicated with a water outlet of the first water supply connector 1.

The reinforced washing mechanism comprises a second water supply joint 2 and a reinforced washing assembly, and the water inlet end of the second water supply joint 2 is connected with the water outlet end of the first water supply joint 1. The reinforced washing component is fixedly arranged on the lower bowl basket 300 of the dish washer through a fixing piece 10 and comprises a water diversion pipe 3, at least one conveying pipe 4 and at least one reinforced washing component, the water inlet end of the water diversion pipe 3 is detachably connected with the water outlet end of the second water supply joint 2, the water outlet end of the water diversion pipe 3 is provided with at least one connecting pipe 5 communicated with the water outlet end, the water inlet end of the conveying pipe 4 is connected with the water outlet end of the connecting pipe 5, and the reinforced washing component is communicated with the water outlet end of the conveying pipe 4.

In a specific application, the water inlet end of the first water supply joint 1 is communicated with a water supply cup of the dish washer, the severely contaminated tableware is placed in a preset area in the lower bowl basket 300, after the dish washer is started, water flows enter the lower spray arm 600 through the first water supply joint 1 and enter the enhanced washing part through the first water supply joint 1, the second water supply joint 2, the water distribution pipe 3, the connecting pipe 5 and the conveying pipe 4, and the lower spray arm 600 and the enhanced washing part spray water to the tableware placed in the lower bowl basket 300 at the same time so as to clean the attached pollutants on the tableware.

The predetermined area in the lower basket 300 is an area of the lower basket 300 corresponding to the reinforcing washing means, that is, an area where the heavily contaminated dishes are placed in the lower basket 300 and the water flow from the reinforcing washing means can be covered.

Specifically, in this embodiment, the bottom of the lower bowl basket 300 and the inner side wall of the bottom of the dishwasher are both rectangular, the number of the conveying pipes 4 is two, correspondingly, the number of the reinforcing washing parts and the connecting pipes 5 is also two, and the two connecting pipes 5 are respectively located at two sides of the water diversion pipe 3, so that the two conveying pipes 4 are respectively located at two corners of four corners of the bottom of the rectangular lower bowl basket 300, the two corners may be adjacent or not adjacent, and of course, the number of the conveying pipes 4, the reinforcing washing parts and the connecting pipes 5 may be four, so that the four reinforcing washing parts are respectively located at four corners of the bottom of the rectangular lower bowl basket 300, the washing range is enlarged, and the overall washing effect is further improved.

Specifically, the side wall of the first water supply joint 1 is provided with a water passing hole 11, the lower spray arm 600 is sleeved on the first water supply joint 1, and the water inlet of the lower spray arm 600 is communicated with the water passing hole 11. Through such design for the water that flows through first water supply joint 1 can directly get into down spouting arm 600 through water hole 11, has shortened the water route, and moreover, down spouting arm 600 can rotate as the pivot with first water supply joint 1, realizes 360 degrees no dead angle washs.

In practice, the fixing element 10 comprises a plurality of connection buckles arranged on the water diversion pipe 3 and/or on the delivery pipe 4. In this embodiment, in order to guarantee to strengthen and wash the subassembly firmly to fix on the lower floor's bowl basket 300 of dish washer, all be equipped with the connection buckle on the shunt tubes 3 and on the conveyer pipe 4, and the connection buckle on the conveyer pipe 4 is located the play water end of conveyer pipe 4, so, not only make to strengthen and wash the subassembly installation firmly, the atress is even difficult for rocking moreover.

As shown in fig. 3, in some preferred embodiments, a connection block 41 is provided on the outer side wall of the water inlet end of the delivery pipe 4, a connection bayonet 51 is provided on the side wall of the connection pipe 5, and the connection block 41 is engaged with the connection bayonet 51. In the specific application, through setting up the connection fixture block 41 at the lateral wall of the water inlet of conveyer pipe 4 and setting up the connection bayonet 51 with connection fixture block 41 looks adaptation at the lateral wall of connecting pipe 5 for the quick connection of conveyer pipe 4 and connecting pipe 5 can be realized with connection bayonet 51 cooperation to connection fixture block 41.

In practical applications, the reinforcing washer can be any structure capable of spraying water, for example, a through hole is formed on the side wall of the water outlet end of the conveying pipe 4, and in order to expand the cleaning range of the reinforcing washer, in some preferred embodiments, the reinforcing washer includes a reinforcing washer arm 6 as shown in fig. 4 and 5. The reinforcing washing and spraying arm 6 is arranged at the water outlet end of the conveying pipe 4 through the connecting component 7 in a rotating mode, a plurality of water outlet holes 61 are formed in the upper surface of the reinforcing washing and spraying arm 6, the directions of the water outlet holes 61 are different, and therefore the reinforcing washing and spraying arm 6 can be driven to rotate when water is sprayed out through the water outlet holes 61. In a specific application, the reinforcing washing part is designed into the reinforcing washing spray arm 6 with the water outlet 61, so that the reinforcing washing spray arm 6 can rotate, the washing range is further enlarged, and the overall washing effect is further improved.

In some preferred embodiments, as shown in fig. 5, the connecting assembly 7 includes a rotating shaft 71 and a fixing base 72. One end of the rotating shaft 71 is connected with the reinforced spray arm 6. The fixing seat 72 is sleeved on the rotating shaft 71 and is connected with the other end of the conveying pipe 4. In the specific application, through fixing base 72 and pivot 71 cooperation, not only can be with strengthening and wash the other end at conveyer pipe 4 firmly to spout arm 6, can guarantee moreover that rivers flow through when strengthening and wash the spout arm 6, strengthen and wash the spout arm 6 and can rotate under the effect of rivers. Specifically, be equipped with the buckle on the fixing base 72, the other end of conveyer pipe 4 is equipped with the fixture block, and the fixture block is located to the buckle card, can realize the quick installation and the dismantlement of fixing base 72 through fixture block and buckle cooperation, is convenient for maintain the later stage.

As shown in fig. 6 and 7, in some preferred embodiments, a sealing ring 8 is provided inside the water inlet end of the water diversion pipe 3, a sealing ring 81 is provided at an inner edge of the sealing ring 8, and the caliber of the sealing ring 81 is gradually increased or gradually decreased along an axial direction of the sealing ring 8, so that an outer side wall of the second water supply joint 2 is abutted against the sealing ring 81 when the second water supply joint 2 is connected to the water diversion pipe 3. In the specific application, through setting up sealing washer 8 in the inside of the water inlet end of shunt tubes 3 to set up the sealing ring 81 that the bore increases gradually or reduces gradually along the axial of sealing washer 8 at sealing washer 8's inward flange, when making second water supply joint 2 pass sealing washer 8, sealing ring 81 and the lateral wall butt of second water supply joint 2, in order to guarantee the sealing of the junction of second water supply joint 2 and shunt tubes 3, thereby guarantee to have enough pressure by strengthening the rivers that wash the part spun and wash away the pollutant on the tableware.

In order to ensure accuracy when the water diversion pipe 3 is connected again after being split with the second water supply connector 2, preferably, the outer side wall of the water outlet end of the second water supply connector 2 is provided with a guide section 21, and the outer diameter of the guide section 21 gradually decreases from the second water supply connector 2 to the direction of the water diversion pipe 3, that is, the water outlet end of the second water supply connector 2 is in a truncated cone shape, and the water outlet end of the truncated cone-shaped second water supply connector 2 can play a guide role when the water diversion pipe 3 is connected again with the second water supply connector 2, so that the water diversion pipe 3 is connected with the second water supply connector 2 accurately.

As shown in fig. 7, in some preferred embodiments, a limiting plate 9 abutting against the sealing ring 8 is disposed inside the water inlet end of the water diversion pipe 3, and the limiting plate 9 is located on a side of the sealing ring 8 away from the water outlet end of the water diversion pipe 3. In the specific application, carry out spacing fixed through limiting plate 9 to sealing washer 8, avoid pull bowl basket to make second water supply joint 2 and the disconnection of distributive pipe 3 when, sealing washer 8 can drop by the inside of the one end of water pipe under the effect of second water supply joint 2.

As shown in fig. 3 and 7, in some preferred embodiments, the limiting plate 9 is provided with a fixing block 81, the sidewall of the water inlet end of the water diversion pipe 3 is provided with a fixing bayonet 32, and the fixing block 81 is blocked in the fixing bayonet 32. In the specific application, through set up fixed fixture block 81 on limiting plate 9 and set up the fixed bayonet socket 32 with fixed fixture block 81 looks adaptation at the lateral wall of the water inlet end of water diversion pipe 3 for fixed fixture block 81 cooperates with fixed bayonet socket 32, can realize limiting plate 9 and water diversion pipe 3's quick connect. Specifically, the number of the fixing clamping blocks 81 and the fixing bayonets 32 can be four, the four fixing clamping blocks 81 are uniformly distributed on the limiting plate 9, and the four fixing bayonets 32 are uniformly distributed on the side wall of the water inlet end of the water distribution pipe 3.

In some preferred embodiments, as shown in fig. 3, the sidewall of the water inlet end of the water diversion pipe 3 is provided with a plurality of openings 33. In specific application, through setting up a plurality of openings 33 at the lateral wall of the water inlet end of shunt tubes 3, when avoiding installing limiting plate 9 to the inside of the water inlet end of shunt tubes 3, limiting plate 9 can prop the water inlet end of shunt tubes 3 bad. Specifically, openings 33 are provided on two sides of each fixing bayonet 32, for example, the number of fixing bayonets 32 is four, then the number of openings 33 is eight, the eight openings 33 are divided into four groups, and two openings 33 of each group are respectively located on two sides of one fixing bayonet 32.

In a second aspect, as shown in fig. 8, 9 and 10, the present utility model provides a dishwasher, which includes a housing 100, an upper basket 200, a lower basket 300, an upper spray arm 400 and a middle spray arm 500, and further includes the reinforced washing structure of the first aspect, wherein the lower spray arm 600 is located below the lower basket 300, and the fixing member 10 is disposed on the lower basket 300.

In some preferred embodiments, as shown in fig. 9, the dishwasher further includes at least one washing spray arm 700, and the at least one washing spray arm 700 is rotatably disposed on a bottom sidewall of the housing 100 near a rear sidewall of the housing 100. In a specific application, the number of the cleaning spray arms 700 is two, and the two cleaning spray arms 700 and the two reinforcing cleaning parts are respectively positioned at four corners of the inner side wall of the bottom of the rectangular dish washer, so that the cleaning range of the dish washer can be enlarged, and the cleaning effect of the dish washer is improved.

It should be understood that the cleaning spray arm 700 may spray water together with the reinforcing cleaning member, or may not spray water together with the reinforcing cleaning member through the water diversion valve control, and may be specifically selected adaptively according to the actual situation, which is not limited herein.

In summary, the enhanced washing structure and the dish washer of the present utility model enter the lower spray arm 600 through the first water supply connector 1 and the water passing hole 11 and enter the enhanced washing part through the first water supply connector 1, the second water supply connector 2, the water dividing pipe 3, the connecting pipe 5 and the conveying pipe 4, so that the lower spray arm 600 and the enhanced washing part spray water flow to the severely contaminated tableware placed in the predetermined area in the lower bowl basket 300 at the same time, so that the severely contaminated tableware can be cleaned, thereby improving the overall cleaning effect and ensuring the user experience.

The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, or the like, which is within the spirit and principles of the present utility model, should be included in the scope of the claims of the present utility model.

Claims (10)

1. A reinforced washing structure, comprising: a cleaning mechanism and a reinforcing cleaning mechanism;

The cleaning mechanism comprises a first water supply joint and a lower spray arm, and a water inlet of the lower spray arm is communicated with a water outlet of the first water supply joint;

The reinforced washing mechanism comprises a second water supply joint and a reinforced washing assembly; the water inlet end of the second water supply joint is connected with the water outlet end of the first water supply joint; the reinforced washing component is fixedly arranged on the lower bowl basket of the dish washing machine through a fixing piece and comprises a water diversion pipe, at least one conveying pipe and at least one reinforced washing part; the water inlet end of the water diversion pipe is detachably connected with the water outlet end of the second water supply joint, the water outlet end of the water diversion pipe is provided with at least one connecting pipe communicated with the water outlet end of the water diversion pipe, and the water inlet end of the conveying pipe is connected with the water outlet end of the connecting pipe; the reinforcing washing part is communicated with the water outlet end of the conveying pipe.

2. The reinforced washing structure of claim 1, wherein a water passing hole is formed in a side wall of the first water supply joint, the lower spray arm is sleeved on the first water supply joint, and a water inlet of the lower spray arm is communicated with the water passing hole.

3. The reinforced washing structure of claim 1, wherein a sealing ring is arranged in the water inlet end of the water diversion pipe, a sealing ring is arranged at the inner edge of the sealing ring, and the caliber of the sealing ring gradually increases or gradually decreases along the axial direction of the sealing ring, so that when the second water supply joint is connected with the water diversion pipe, the outer side wall of the second water supply joint is abutted with the sealing ring.

4. The reinforced washing structure of claim 3, wherein a limiting plate abutting against a sealing ring is arranged in the water inlet end of the water diversion pipe, and the limiting plate is positioned on one side of the sealing ring away from the water outlet end of the water diversion pipe.

5. The enhanced washing structure of claim 1, wherein the fixture comprises a plurality of connection snaps disposed on the shunt tubes and/or the delivery tubes.

6. The reinforced washing structure of claim 1, wherein a connecting block is arranged on the outer side wall of the water inlet end of the conveying pipe, a connecting bayonet is arranged on the side wall of the connecting pipe, and the connecting block is clamped on the connecting bayonet.

7. The reinforcing washing structure according to claim 1, wherein the reinforcing washing part comprises a reinforcing washing spray arm, the reinforcing washing spray arm is rotatably arranged at the water outlet end of the conveying pipe through a connecting assembly, a plurality of water outlet holes are formed in the upper surface of the reinforcing washing spray arm, and the orientations of the water outlet holes are different, so that the reinforcing washing spray arm can be driven to rotate when water is sprayed out from the water outlet holes.

8. The reinforced washing structure of claim 7, wherein the connecting assembly comprises a rotating shaft and a fixing seat; one end of the rotating shaft is connected with the reinforced washing and spraying arm; the fixed seat is sleeved on the rotating shaft and is connected with the water outlet end of the conveying pipe.

9. The dish washer, including casing, upper bowl basket, lower floor bowl basket, go up spray arm and well spray arm, its characterized in that still includes the reinforcing structure of washing of any one of claims 1-8, lower spray arm is located the below of lower floor bowl basket, the mounting sets up on the lower floor bowl basket.

10. The dishwasher of claim 9 further comprising at least one wash spray arm rotatably disposed on the bottom side wall of the housing in an area adjacent the back side wall of the housing.