CN217972796U - A kind of environment-friendly water purification filter element and water purifier - Google Patents

Abstract

The utility model belongs to the technical field of the water purification of environmental protection, especially, be an environmental protection water purification filter core and water purifier, include the water purifier body and install inlet tube and drain pipe on the water purifier body, still install the fast-assembling subassembly on the water purifier body, the fast-assembling subassembly includes RO sealing washer, RO reverse osmosis filter core, outlet pipe, nut, active carbon lower extreme cover, active carbon sealing washer, active carbon filter core, active carbon upper end cover, PP lower extreme cover, PP sealing washer, the cotton filter core of PP, PP upper end cover and filter cap, the user can make the simple to operate of filter core swift through this fast-assembling subassembly, and filter core and water purifier body components of a whole that can function independently design, can keep the water purifier body to continue to use after the renew cartridge, very environmental protection, cooperation block subassembly can be fixed with the active carbon filter core through the block mode, it directly gets into the filterable problem of lower floor not having water to be difficult to appear through the active carbon filtration to pass, thereby ensure the filter effect.

Description

A kind of environment-friendly water purification filter element and water purifier

technical field

The utility model belongs to the technical field of environmental protection water purification, in particular to an environmental protection water purification filter element and a water purifier.

Background technique

With the improvement of people's living standards, the use of water purifiers has become more common in China. Some water purifiers use multi-stage filter elements to filter, and the filter elements must be replaced after a period of use. There are usually two types of filter element installation and replacement. The first method is an integrated design of the filter element and the water purifier body. When replacing, the filter element and the water purifier body are replaced together and then discarded. This method will waste a lot of resources and is not environmentally friendly. The second type of filter element and the water purifier body are separated. One-body design, but it needs to unscrew multiple filter caps for replacement, and the replacement process is very cumbersome.

In order to solve the above problems, this application proposes an environmentally friendly water purification filter element and a water purifier.

Utility model content

In order to solve the problems raised in the above-mentioned background technology. The utility model provides an environment-friendly water purifying filter element and a water purifier, which are characterized in that the filter element can be easily replaced and are very environment-friendly.

In order to achieve the above purpose, the utility model provides the following technical solutions: an environmentally friendly water purification filter element and a water purifier, including a water purifier body and a water inlet pipe and a drain pipe installed on the water purifier body, the water purifier There is also a quick assembly installed on the body of the device;

The quick assembly includes RO sealing ring, RO reverse osmosis filter element, outlet pipe, nut, activated carbon lower end cap, activated carbon sealing ring, activated carbon filter element, activated carbon upper end cap, PP lower end cap, PP sealing ring, PP cotton filter element, PP upper end cap and the filter cover, the bottom inner wall of the water purifier body is fixedly connected with the RO sealing ring, the inner wall of the RO sealing ring is slidably connected with the RO reverse osmosis filter element, and the raw water on the RO reverse osmosis filter element The lower surface of the sealing ring is slidably connected with the RO sealing ring, the bottom end surface of the RO reverse osmosis filter element is fixedly connected with the water outlet pipe, and the water outlet pipe is slidably connected with the water purifier body. The outer side of the bottom end is provided with a first thread and is screwed with the nut, the activated carbon lower end cover is arranged above the RO reverse osmosis filter element, and the activated carbon sealing ring is slidably connected to the lower surface of the activated carbon lower end cover. The activated carbon sealing ring is fixedly connected to the water purifier body, the activated carbon filter element is slidably connected to the upper surface of the activated carbon lower end cover, the activated carbon upper end cover is slidably connected to the upper surface of the activated carbon filter element, and the activated carbon upper end cover is slidably connected to the activated carbon upper end cover. The upper part of the cover is provided with the PP lower end cover, the lower surface of the PP lower end cover is slidingly connected with the PP sealing ring, the PP sealing ring is fixedly connected with the water purifier body, and the upper surface of the PP lower end cover is The surface is slidably connected with the PP cotton filter element, the upper surface of the PP cotton filter element is slidably connected with the PP upper end cover, the filter cover is arranged above the PP upper end cover, and the filter cover is connected with the second thread through the second thread. The water purifier body is threaded.

As an environmentally friendly water purification filter element and water purifier of the present utility model, the quick assembly also includes a first sealing ring and a second sealing ring, and the outer wall of the outlet pipe is provided with the first sealing ring , the upper and lower surfaces of the first sealing ring are slidably connected with the water purifier body and the nut respectively, the lower surface of the filter cover is slidably connected with the second sealing ring, and the lower surface of the second sealing ring is The surface is slidingly connected with the top surface of the water purifier body.

As an environmentally friendly water purification filter element and water purifier of the present utility model, the quick assembly also includes a first spring, and the upper surface of the PP upper end cover is slidably connected with the first spring, and the first spring The top end is fixedly connected with the filter cover.

As an environmentally friendly water purification filter element and water purifier of the present utility model, it also includes an engaging assembly, the engaging assembly includes a round hole, a sliding rod, a sliding block and a second spring, and the inner side of the PP sealing ring is provided with a There are two circular holes arranged symmetrically, and the sliding rod is slidably connected in the circular hole, the outer side of the sliding rod is slidably connected with the upper end cover of the activated carbon, and the end surface of the sliding rod is fixedly connected There is the slider, the slider is slidably connected with the activated carbon upper end cover, and the side of the slider away from the slide bar is slidably and fixedly connected with the second spring, and the second spring is far away from the slider. One end of the block is fixedly connected with the upper end cap of the activated carbon.

Preferably, as an environmentally friendly water purification filter element and water purifier of the present invention, the engaging assembly further includes a fixed block, and the outer side of the slide bar and one end close to the PP sealing ring is fixedly connected to the fixed block.

Compared with the prior art, the beneficial effects of the utility model are:

This device is equipped with a quick-installation component. Through this quick-installation component, the user can make the installation of the filter element convenient and quick, and the filter element and the water purifier body are designed separately. After replacing the filter element, the water purifier body can be kept for continued use, which is very environmentally friendly. , with the snap-fit component, the activated carbon filter element can be fixed by the snap-fit method, and it is not easy for the water to directly enter the next layer of filtration without being filtered by the activated carbon, so as to ensure the filtering effect.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of nut in the utility model;

Fig. 3 is the structural representation of slide bar in the utility model;

Fig. 4 is a schematic structural diagram of the first sealing ring in the present invention.

In the picture:

1. The body of the water purifier; 2. The water inlet pipe; 3. The drain pipe;

4. Quick assembly; 41. RO sealing ring; 42. RO reverse osmosis filter element; 43. Outlet pipe; 44. Nut; 45. Activated carbon lower end cover; 46. Activated carbon sealing ring; 47. Activated carbon filter element; 48. Activated carbon upper end cover ; 49, PP lower end cover; 410, PP sealing ring; 411, PP cotton filter element; 412, PP upper end cover; 413, filter cover; 414, first sealing ring; 415, second sealing ring; 416, first spring;

5. Engagement assembly; 51. Round hole; 52. Slide bar; 53. Slide block; 54. Second spring; 55. Fixed block.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figure 1:

An environment-friendly water purifying filter element and a water purifier include a water purifier body 1 and a water inlet pipe 2 and a drain pipe 3 installed on the water purifier body 1.

In this embodiment: the filter element will be replaced after being used for a period of time. There are usually two ways to install and replace the filter element. The first filter element and water purifier body 1 are designed in one piece. To replace them together and discard them will waste a lot of resources and is not environmentally friendly. The second type of filter element and the water purifier body are designed in one piece, but when replacing, you need to unscrew multiple filter element covers for replacement, and the replacement process is very cumbersome.

Going further:

A quick assembly 4 is installed on the water purifier body 1 .

To take it a step further:

As shown in Figure 1, Figure 2 and Figure 4:

The quick assembly 4 includes RO sealing ring 41, RO reverse osmosis filter element 42, outlet pipe 43, nut 44, activated carbon lower end cover 45, activated carbon sealing ring 46, activated carbon filter element 47, activated carbon upper end cover 48, PP lower end cover 49, PP sealing Ring 410, PP cotton filter element 411, PP upper end cover 412 and filter cover 413, the inner wall of the bottom end of the water purifier body 1 is fixedly connected with RO seal ring 41, and the inner wall of RO seal ring 41 is slidably connected with RO reverse osmosis filter element 42 , the lower surface of the raw water sealing ring on the RO reverse osmosis filter element 42 is slidably connected to the RO sealing ring 41, and the bottom end surface of the RO reverse osmosis filter element 42 is fixedly connected to a water outlet pipe 43, which is slidably connected to the water purifier body 1, and the water outlet pipe The outside of the bottom end of 43 is provided with a first thread and is screwed with a nut 44, and the top of the RO reverse osmosis filter element 42 is provided with an activated carbon lower end cover 45, and the lower surface of the activated carbon lower end cover 45 is slidably connected with an activated carbon sealing ring 46, an activated carbon sealing ring 46 Fixedly connected with the water purifier body 1, the upper surface of the activated carbon lower end cover 45 is slidably connected with an activated carbon filter element 47, and the upper surface of the activated carbon filter element 47 is slidably connected with an activated carbon upper end cover 48, and the upper surface of the activated carbon upper end cover 48 is provided with a PP lower end cover 49, The lower surface of the PP lower end cover 49 is slidingly connected with a PP sealing ring 410, the PP sealing ring 410 is fixedly connected with the water purifier body 1, the upper surface of the PP lower end cover 49 is slidingly connected with a PP cotton filter element 411, and the upper surface of the PP cotton filter element 411 A PP upper end cover 412 is slidably connected, and a filter cover 413 is arranged above the PP upper end cover 412, and the filter cover 413 is threadedly connected with the water purifier body 1 through a second thread.

In this embodiment: the RO reverse osmosis filter element 42 is placed inside the water purifier body 1, the RO reverse osmosis filter element 42 drives the water outlet pipe 43 into the water purifier body 1, and the water outlet pipe 43 passes through the bottom of the water purifier body 1 Then screw the nut 44 on the outlet pipe 43. During the process of tightening the nut 44, the outlet pipe 43 drives the RO reverse osmosis filter element 42 to move downward, and the raw water sealing ring on the RO reverse osmosis filter element 42 touches the RO sealing ring 41. The nut 44 fixes the RO reverse osmosis filter element 42, and at the same time, because the raw water sealing ring and the RO sealing ring 41 are tightly attached together, the water above the RO sealing ring 41 is not easy to leak downwards, and the activated carbon upper end cover 48 and the activated carbon The lower end cap 45 is buckled on the upper and lower ends of the activated carbon filter element 47 respectively, and then placed on the top of the activated carbon sealing ring 46. The PP upper end cap 412 and the PP lower end cap 49 are respectively buckled on the upper and lower ends of the PP cotton filter element 411, and then placed on the PP cotton filter element 411. Above the sealing ring 410, tighten the filter cover 413 on the water purifier body 1, connect the water inlet pipe 2 to the booster pump, connect the drain pipe 3 to the sewage pool, and connect the outlet pipe 43 to the water container , start the booster pump, the booster pump sends tap water into the cavity between the PP cotton filter element 411, the PP lower end cover 49, the PP sealing ring 410 and the filter cover 413 through the water inlet pipe 2, and then from the outside of the PP cotton filter element 411 Enter the cavity inside the PP cotton filter element 411, and then enter the cavity below the PP lower end cover 49 through the first pipe in the middle of the PP lower end cover 49. When tap water passes through the PP cotton filter element 411, some large particles of silt, fiber, Rust etc. are all filtered out, and the tap water passes through the activated carbon filter element 47 in the cavity below the PP lower end cover 49 to reach the cavity in the middle of the activated carbon filter element 47. Filtered out, tap water enters the RO reverse osmosis filter element 42 through the second pipeline from the cavity in the middle of the activated carbon filter element 47, and after being filtered by the RO reverse osmosis filter element 42, the waste water enters the cavity below the RO sealing ring 41 and passes through the drain pipe 3 discharge, the RO reverse osmosis filter element 42 filters out impurities such as inorganic salts, heavy metal ions, organic matter, colloids, bacteria, and viruses in the water, and the filtered water reaches the water container through the outlet pipe 43. This method only needs to be unscrewed One filter cover 413 can install all the filter elements, which can make the installation and replacement of the filter elements quick and easy, and the filter element and the water purifier body 1 are designed separately, and the water purifier body 1 can be retained to continue to use after the filter element is replaced, which is very environmentally friendly.

It should be noted that: both the PP upper end cap 412 and the activated carbon upper end cap 48 are airtight, which can prevent tap water from directly entering the cavity between the PP cotton filter element 411 and the activated carbon filter element 47, thereby ensuring that all tap water will be filtered.

It should be noted that: both the PP upper end cover 412 and the activated carbon upper end cover 48 are cylindrical structures, and bosses are arranged outside the bottom end, the PP upper end cover 412 is fixed with the PP cotton filter element 411 through the bosses, and the activated carbon upper end cover 48 is passed through Boss and activated carbon filter element 47 are fixed.

It should be noted that: the inner side of the PP lower end cover 49 is fixedly connected with a first pipeline, the first pipeline communicates with the cavity inside the PP cotton filter element 411 and the cavity below the PP lower end cover 49, and the tap water filtered by the PP cotton filter element 411 passes through The first pipeline enters the cavity below the PP lower end cover 49, and the inner side of the activated carbon lower end cover 45 is fixedly connected with a second pipeline, and the second pipeline communicates with the cavity inside the activated carbon filter element 47 and the cavity below the activated carbon lower end cover 45. The tap water filtered by the filter element 47 enters the cavity below the activated carbon lower end cover 45 through the second pipeline.

Going a step further;

In an optional embodiment, the quick assembly 4 further includes a first sealing ring 414 and a second sealing ring 415, the outer wall of the outlet pipe 43 is covered with the first sealing ring 414, and the upper and lower surfaces of the first sealing ring 414 Slidingly connected with the water purifier body 1 and the nut 44 respectively, the lower surface of the filter cover 413 is slidably connected with a second seal ring 415 , and the lower surface of the second seal ring 415 is slidably connected with the top surface of the water purifier body 1 .

In this embodiment: the first sealing ring 414 can make the waste water in the cavity below the RO sealing ring 41 not easy to leak to the outside through the position of the outlet pipe 43, and the second sealing ring 415 can improve the filter cover 413 and the water purifier body. The sealing effect of 1 makes it difficult for water to seep between the filter cover 413 and the water purifier body 1.

Going a step further;

In an optional embodiment, the quick assembly 4 further includes a first spring 416 , the first spring 416 is slidably connected to the upper surface of the PP upper end cover 412 , and the top end of the first spring 416 is fixedly connected to the filter cover 413 .

In this embodiment: when the filter cover 413 is tightened, the first spring 416 follows the rotation when the filter cover 413 rotates and moves downward to squeeze the PP upper end cover 412, which can improve the gap between the PP lower end cover 49 and the PP sealing ring 410. Sealing effect.

Going a step further;

As shown in Figure 1 and Figure 3:

The environmental protection water purification filter element and the water purifier also include an engaging assembly 5, the engaging assembly 5 includes a round hole 51, a sliding rod 52, a sliding block 53 and a second spring 54, and the inner side of the PP sealing ring 410 is provided with two Symmetrically arranged round holes 51 and round holes 51 are slidably connected with slide bar 52, the outer side of slide bar 52 is slidably connected with activated carbon upper end cover 48, and the end surface of slide bar 52 is fixedly connected with slide block 53, and slide block 53 is connected with active carbon. The upper end cover 48 is slidably connected, and the side of the slider 53 away from the slide bar 52 is fixedly connected with a second spring 54 , and the end of the second spring 54 away from the slider 53 is fixedly connected with the activated carbon upper end cover 48 .

In this embodiment: when the activated carbon filter element 47 is installed, two sliding rods 52 are squeezed in the middle of the upper end cover 48 of the activated carbon. The rod 52 moves downward. When the slide rod 52 reaches the position of the round hole 51, the slide rod 52 is released, and the second spring 54 resets to drive the reset of the slide rod 52. At this time, the slide rod 52 is inserted into the round hole 51. At this time, the activated carbon filter element 47 is fixed, and the activated carbon filter element 47 is fixed by this engaging method, so that the problem that tap water directly enters the next layer of filtration without being filtered by the activated carbon filter element 47 is not easy to occur, thereby ensuring the filtering effect.

Going a step further;

In an optional embodiment, the engaging assembly 5 further includes a fixing block 55 , and the fixing block 55 is fixedly connected to an end near the outer side of the sliding rod 52 and close to the PP sealing ring 410 .

In this embodiment: the fixing block 55 can conveniently pull the slide bar 52, thereby improving the convenience of installing the activated carbon filter element 47.

Working principle: Put the RO reverse osmosis filter element 42 into the water purifier body 1, the RO reverse osmosis filter element 42 drives the water outlet pipe 43 into the water purifier body 1, and the water outlet pipe 43 passes through the water outlet hole at the bottom of the water purifier body 1 , and then put the first sealing ring 414 on the water outlet pipe 43, and then screw the nut 44 on the water outlet pipe 43. During the process of tightening the nut 44, the water outlet pipe 43 drives the RO reverse osmosis filter element 42 to move downward, and the RO reverse osmosis filter element 42 The upper raw water sealing ring touches the RO sealing ring 41, and the RO reverse osmosis filter element 42 is fixed when the nut 44 is tightened. The water is not easy to leak downwards, buckle the activated carbon upper end cover 48 and the activated carbon lower end cover 45 respectively on the upper and lower ends of the activated carbon filter element 47, pull the fixing block 55 to squeeze the two slide bars 52 toward the middle of the activated carbon upper end cover 48, slide The rod 52 drives the slider 53 to squeeze the second spring 54 and then picks up the activated carbon upper end cap 48 to drive the slider 52 to move downward. The reset of the slide bar 52, at this time the slide bar 52 is inserted into the round hole 51, at this time the activated carbon lower end cover 45 is fixed above the activated carbon sealing ring 46, and the PP upper end cover 412 and the PP lower end cover 49 are respectively buckled on the PP cotton filter element The upper and lower ends of 411 are then placed above the PP sealing ring 410, and the filter cover 413 is tightened on the water purifier body 1. The second sealing ring 415 below the filter cover 413 plays a sealing role. When tightening the filter cover 413 When the filter cover 413 rotates, the first spring 416 follows the rotation and moves downward to squeeze the PP upper end cover 412, which can improve the sealing effect between the PP lower end cover 49 and the PP sealing ring 410, and connect the water inlet pipe 2 to the booster On the pump, connect the drain pipe 3 to the sewage tank, connect the outlet pipe 43 to the water container, start the booster pump, and the booster pump sends tap water into the PP cotton filter element 411, the PP lower end cover 49, In the cavity between the PP sealing ring 410 and the filter cover 413, then enter the cavity inside the PP cotton filter element 411 from the outside of the PP cotton filter element 411, and then enter the PP lower end cover through the first pipe in the middle of the PP lower end cover 49 In the cavity below 49, when the tap water passes through the PP cotton filter element 411, some large particles of silt, fiber, rust, etc. are filtered out, and the tap water passes through the activated carbon filter element 47 in the cavity below the PP lower end cover 49 to reach the middle of the activated carbon filter element 47 In the cavity, the organic matter, chloride, color, peculiar smell, etc. in the tap water are filtered by the activated carbon filter element 47 at this time, and the tap water enters the RO reverse osmosis filter element 42 through the second pipeline from the cavity in the middle of the activated carbon filter element 47, and passes through the RO reverse osmosis filter element 42. After the RO reverse osmosis filter element 42 is filtered, the wastewater enters the cavity below the RO sealing ring 41 and is discharged through the drain pipe 3. The RO reverse osmosis filter element 42 filters impurities such as inorganic salts, heavy metal ions, organic matter, colloids, bacteria, and viruses in the water. out, the filtered water arrives through the outlet pipe 43 In this way, all the filter elements can be installed because only one filter cover 413 needs to be unscrewed, which can make the installation and replacement of the filter element convenient and quick, and the filter element and the water purifier body are designed separately, and the clean water can be kept after replacing the filter element. The water container body 1 continues to be used, which is very environmentally friendly.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (5)

1. The utility model provides an environmental protection water purification filter core and water purifier, includes water purifier body (1) and installs inlet tube (2) and drain pipe (3) on water purifier body (1), its characterized in that: the water purifier body (1) is also provided with a quick assembly component (4);

the fast-assembling subassembly (4) comprises an RO sealing ring (41), an RO reverse osmosis filter element (42), an outlet pipe (43), a nut (44), an activated carbon lower end cover (45), an activated carbon sealing ring (46), an activated carbon filter element (47), an activated carbon upper end cover (48), a PP lower end cover (49), a PP sealing ring (410), a PP cotton filter element (411), a PP upper end cover (412) and a filter cover (413), wherein the bottom inner side wall of the water purifier body (1) is fixedly connected with the RO sealing ring (41), the inner side wall of the RO sealing ring (41) is slidably connected with the RO reverse osmosis filter element (42), the lower surface of the raw water sealing ring on the RO reverse osmosis filter element (42) is slidably connected with the RO sealing ring (41), the bottom end surface of the RO reverse osmosis filter element (42) is fixedly connected with the outlet pipe (43), the outlet pipe (43) is slidably connected with the water purifier body (1), the bottom outer side of the outlet pipe (43) is provided with a first thread and is screwed with the nut (44), the reverse osmosis filter element (42) is arranged above the activated carbon lower end cover (45) and is slidably connected with the activated carbon sealing ring (46), the upper surface sliding connection of active carbon lower extreme cover (45) has active carbon filter element (47), the upper surface sliding connection of active carbon filter element (47) has active carbon upper end cover (48), the top of active carbon upper end cover (48) is provided with PP lower extreme cover (49), the lower surface sliding connection of PP lower extreme cover (49) has PP sealing washer (410), PP sealing washer (410) with water purifier body (1) fixed connection, the upper surface sliding connection of PP lower extreme cover (49) has the cotton filter core of PP (411), the upper surface sliding connection of the cotton filter core of PP (411) has PP upper end cover (412), the top of PP upper end cover (412) is provided with filter cover (413), filter cover (413) through the second screw thread with water purifier body (1) threaded connection.

2. The environmental protection water purification cartridge and water purifier of claim 1, wherein: fast-assembling subassembly (4) still includes first sealing washer (414) and second sealing washer (415), the lateral wall cover of outlet pipe (43) is equipped with first sealing washer (414), the upper and lower surface of first sealing washer (414) respectively with water purifier body (1) with nut (44) sliding connection, the lower surface sliding connection of straining lid (413) has second sealing washer (415), the lower surface of second sealing washer (415) with the top terminal surface sliding connection of water purifier body (1).

3. The environmental protection water purification cartridge and water purifier of claim 1, wherein: the fast-assembling subassembly (4) further comprises a first spring (416), the first spring (416) is connected to the upper surface of the PP upper end cover (412) in a sliding mode, and the top end of the first spring (416) is fixedly connected with the filter cover (413).

4. The environmental protection water purification cartridge and water purifier of claim 1, wherein: still include block assembly (5), block assembly (5) include round hole (51), slide bar (52), slider (53) and second spring (54), the inboard of PP sealing washer (410) is seted up two and is the symmetrical form and arrange round hole (51) just sliding connection has in round hole (51) slide bar (52), the outside of slide bar (52) with active carbon upper end cover (48) sliding connection, the terminal surface fixedly connected with of slide bar (52) slider (53), slider (53) with active carbon upper end cover (48) sliding connection, keep away from slider (53) a side fixedly connected with of slide bar (52) second spring (54), second spring (54) are kept away from the one end of slider (53) with active carbon upper end cover (48) fixed connection.

5. The environmental protection water purification cartridge and water purifier of claim 4, wherein: the clamping assembly (5) further comprises a fixing block (55), and the fixing block (55) is fixedly connected to one end, close to the PP sealing ring (410), of the outer side of the sliding rod (52).

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