KR101691384B1 - A assembly for connecting a pipe to another pipe - Google Patents

Abstract

The present invention relates to a pipe connection assembly capable of connecting a pipe with plumbing through strong clamping force without a leak by using a pipe gripping unit and a pipe transformation unit. According to the present invention, the pipe connection assembly includes: a pipe gripping unit installed on the outer surface of a pipe to grip the pipe while making the pipe airtight; a temporary installation unit temporarily installing the pipe gripping unit able to be inserted into the pipe; a pressurizing unit screwed with the outer surface of the temporary installation unit to be separable, and pressurizing the pipe gripping unit in a direction to the temporary installation unit; an uncombining unit installed between the temporary installation unit and the pressurizing unit, and uncombining the temporary installation unit and the pressurizing unit when the pipe to be connected pressurizes the temporary installation unit at not less than predetermined pressure by penetrating the pipe gripping unit and the pressurizing unit; and a pipe transformation unit inserted into the pressurizing unit, and transforming the pipe by pressurizing the outer surface of the pipe in a state in which the pressurizing unit is completely combined with connection target plumbing.

Description

ASSEMBLY FOR CONNECTING A PIPE TO ANOTHER PIPE

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe connecting assembly, and more particularly, to a pipe connecting assembly capable of connecting a pipe to a pipe with a strong clamping force without leakage by using pipe gripping means and pipe deforming means.

In general, pipes are widely used for transporting gas such as a fluid or a gas such as water or oil, and these pipes are manufactured and sold to a certain standard (length) due to transportation or handling restrictions.

Therefore, when constructing a section longer than the standard length of the pipe or constructing the bent section, it is necessary to use a pipe connection device or weld the pipes to each other. There is a wide variety of piping connection devices for connecting pipes used in the piping. In particular, piping connection devices having a structure that prevents the pipes inserted in the connection ports from being escaped by using a grip ring, It is widely used for plumbing work.

FIG. 1 is an exploded perspective view for explaining a conventional piping connection method. FIG. 2 is a longitudinal sectional view of FIG. 1. In the conventional piping connection method, as shown in FIGS. 1 and 2, The nut 2 is inserted into the male thread portion 2 of the pipe 1 in a state in which the O-ring 6, the washer 5 and the grip ring 4 are successively installed on the pipe 3 after the pipe 2 is inserted into the nut 2. [ 1a.

Thus, when the protruding portion 2b of the nut 2 compresses the O-ring 6 in a state where the grip ring 4 provided on the pipe 3 is in close contact with the first stopper 1b of the pipe 1, 6 and the outer circumferential surface of the pipe 3 are sealed so that airtightness is maintained and the washer 5 pushes the grip ring 4 at the same time. The grip 4a of the grip ring 4 is pressed against the pipe 3 to clamp the pipe 3 so that the pipe 3 is not separated from the pipe connection device. Until it is completely screwed.

However, in the conventional pipe connection method, when the insertion depth of the grip ring 4 inserted into the pipe 3 is limited to maintain a predetermined depth and the insertion depth of the grip ring 4 is short, When the pipe 3 is detached and the insertion depth of the grip ring 4 is deeper on the contrary, when the nut 2 is screwed into the pipe 1, the tip of the pipe 3 is connected to the second stopper 1c of the pipe The grip ring 4 is damaged by tightening the nut in the close contact state or the outer circumferential surface of the pipe 3 is scratched by the grip 4a or excessive compression of the O-ring 6 causes bottleneck of the pipe, Which is the cause of the separation.

Moreover, the conventional piping connection method shows a fatal defect in which the pipe 3 is separated from the piping connection apparatus by varying the assembling order of the parts when the operator's mistake or work skill is lowered.

Meanwhile, the advanced pipe connector assemblies as shown in FIG. 3 have been developed and used because of the above problems. FIG. 3 is a vertical sectional view showing a conventional pipe connector assembly. FIG. 4 is a vertical sectional view of a state in which a pipe is inserted into an insertion hole of a component in a state in which a lid is separated from a housing. In the housing 7, A first stopper 7a is formed for assembling the ring 4, the washer 5 and the O-ring 6 in order to determine its position, and the lower end of the first stopper 7a is provided with the grip ring 4 A second stopper 7b for limiting the insertion depth of the pipe 3 that has passed through the insertion hole of the washer 5 and the O-ring 6 and a grip ring 4 assembled to the housing 7, The washer 5, and the O-ring 6 are protected by the lid 8.

Therefore, in order to connect the pipe, the lid 8 is removed from the housing 7, and then the pipe 3 to be installed is pushed into the insertion hole of the component, the tip of the pipe 3 is caught by the second stopper 7b, The grip ring 4, the washer 5, and the O-ring 6 are sequentially positioned on the outer circumferential surface of the pipe 3, so that the connection operation of the pipe can be performed.

However, this connection method also has various problems as follows. First, the insertion depth is limited so that the insertion depth of the pipe is precisely inserted by sequentially inserting the parts inside the housing. However, when the operator does not understand this, the parts are separated from the housing and the parts are manually assembled in the pipe And the above-described problems are repeatedly generated.

Secondly, since the clamping of the pipe connecting device and the pipe depends on one grip ring, if the pipe is a pipe through which a high-pressure fluid or gas flows or a defect occurs in the grip ring, the clamping force for supporting the pipe is lowered, There was a case in which the separation was performed. If the pipe through which the gas passes is indoors, the pipe can not be separated or the airtightness can not be maintained. If the gas is stained, it becomes a fatal flaw causing a great disaster.

Third, there is no function of pushing the pipe so as to come in close contact with the second stopper of the pipe in the process of screwing the nut to the pipe, so that the tip of the pipe and the pipe are spaced apart as shown in FIG. 2, Or cause the gas to leak.

Fourth, since there is no sealing function inside the nut, moisture penetrates into the inner part. As a result, the grip ring and the washer are corroded due to long-term use, and the clamping force is lowered.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pipe connecting assembly capable of connecting a pipe to a pipe with a strong clamping force without leakage by using a pipe gripping means and a pipe deforming means.

According to an aspect of the present invention, there is provided a pipe connecting assembly comprising: pipe gripping means installed on an outer circumferential surface of a pipe to grip and grip a pipe; Temporary mounting means for temporarily mounting the pipe gripping means in a state in which the pipe gripping means can be inserted into the pipe; A pressing means which is screwed to the outer circumferential surface of the temporary mounting means so as to be removable and which presses the pipe gripping means in the direction of the temporary mounting means; Wherein when the pipe through which the connecting operation is to be carried out passes through the pressing means and the pipe gripping means and presses the temporary mounting means at a predetermined pressure or more between the temporary mounting means and the pressurizing means, Tightening releasing means for releasing the fastening; And pipe deforming means inserted into the pressing means and configured to press and deform the outer surface of the pipe while the pressing means is completely fastened to the pipe to be connected.

In the present invention, the temporary mounting means may include: a seat tube having a cutout at a position facing each other and having a seat portion on which the pipe gripping means is seated; A pressing means fastening portion formed in a male screw shape on an outer surface of the seat tube; A fastening and holding unit having a diameter larger than that of the seat tube at the bottom of the seat tube and having an elastic piece deformed by an external force applied to the seat tube; And a latching part formed on the inner side of the fastening and retaining part and having first and second latching grooves formed to extend from the lower part of the seat tube and spaced apart from each other by a predetermined distance in the vertical direction.

In the present invention, the pipe gripping means includes: a grip ring which is seated in contact with the seating portion and grips an outer surface of the pipe to prevent movement in a direction opposite to the entering direction; A first washer which is seated on the seat portion in contact with the upper surface of the grip ring; An O-ring which is seated on the seating portion in a state of being in contact with the upper surface of the washer and which is in tight contact with the outer surface of the pipe to maintain a hermetic state; And a second washer which is seated in the seating part in a state of being in contact with the upper surface of the O-ring.

Further, in the present invention, the pressing means may include: a pipe coupling portion having a female screw shape to be fastened to the pressing means fastening portion; A latch groove formed on the lower surface of the pipe coupling portion so as to be repeatedly provided with an uneven shape; And a deforming means seating portion formed on the pipe connecting portion and extending therefrom and on which the pipe deforming means is seated.

Further, in the present invention, the tightening releasing means may include: a latch mounting portion having a connecting piece inserted into the incising portion; A latch protruding upward from an upper surface of the latch mounting portion and engaging with the latch groove when engaged with the latch groove to prevent rotation of the pressing means; A latching protrusion formed on the lower outer surface of the latch mounting part in a tubular shape and having a latching protrusion protruded outward to be engaged with the first latching recess; And a releasing protrusion protruded downward from a lower surface of the connecting piece, the releasing protrusion moving downward while pushing the elastic piece as the latch mounting part moves downward by the piping.

Further, in the present invention, the pipe deforming means may include a main body having a first cut portion formed by a circular pipe as a whole, and formed by being partially cut from the upper side to the lower side at regular angular intervals; A deformed protrusion which is annularly protruded inwardly on an inner surface of the main body and presses and deforms the outer surface of the pipe interpolated by compressive deformation of the main body; And protruding part moving means for protruding outwardly from an outer lower side of the main body and moving the deformable protruding part inward by forward movement of the deformable part mounting part in the piping direction.

Further, in the present invention, it is preferable that the deformed projection is made of a material having hardness higher than that of the main body.

In the present invention, it is preferable that the protruding portion moving means is provided with first and second pressing surfaces formed on both upper and lower sides in an oblique plane.

According to the present invention, the pipe can be connected to the pipe with a strong clamping force without leakage by using the pipe gripping means and the pipe deforming means, and even if the grip ring or the like is detached in a specific situation, There is an advantage not to be.

1 to 4 are views of a conventional piping connection method.
5 is an exploded perspective view showing a structure of a pipe connection assembly according to an embodiment of the present invention.
6 is a cross-sectional view showing an operating state of a pipe connection assembly according to an embodiment of the present invention.
FIG. 7 is a view showing a pipe connecting assembly according to an embodiment of the present invention connected with pipes. FIG.
8 is a perspective view showing a structure of a pipe connection assembly according to an embodiment of the present invention.

Hereinafter, a specific embodiment of the present invention will be described in detail with reference to the accompanying drawings.

5, the pipe connecting assembly 100 according to the present embodiment includes the pipe gripping means 110, the temporary mounting means 120, the pressing means 130, the disengagement means 140, And deforming means (150).

First, the temporary mounting means 120 is a component for temporally mounting the pipe gripping means 110 in a state in which the pipe gripping means 110 can be inserted into the pipe. That is, the provisional mounting means 120 extrapolates in the order that the components constituting the pipe gripping means 120 are inserted into the pipe 3, and provides a space to be temporarily mounted with the pipes being in close contact with each other . 5, the temporary mounting means 120 may include a seat tube 121, a pressurizing means fastening portion 122, and a fastening and holding portion 123. As shown in FIG.

First, the seating tube 121 has a circular tube shape as a whole, and has a cutout 124 at a position facing each other as shown in FIG. A seating portion 125 on which the pipe gripping means 110 is seated is formed on the inner surface of the seat tube 121. The seat portion 125 is formed to have a step protruding inwardly from the other inner surface of the seat tube 121 and the pipe gripping means 110 can not advance further and are in close contact with each other It is temporarily mounted. Therefore, the inner diameter of the seat tube 121 is substantially the same as the outer diameter of the pipe gripping means 110.

The incision 124 is formed by vertically cutting the seating tube 121 from the upper side to the lower side, and the two incision parts are formed at positions facing each other. The width of the cutout portion 124 is formed to a width enough for the connecting piece of the tightening releasing means 140 to pass through.

5, the fastening part 122 is formed in a male screw shape on the outer surface of the seat tube 121, and a pipe connecting part (not shown) formed in a female screw structure on the inner surface of the pressing part 130 131, respectively.

5, the fastening and retaining part 123 is formed to have a diameter larger than that of the seat tube at the lower part of the seat tube 121, and is elastically deformed by the external force applied to the lower side 126). Therefore, the fastening and retaining part 123 partially cuts a part of the flat surface part 123a to make a plurality of elastic pieces 126 having elasticity, and the plurality of elastic pieces 126 are, as shown in FIG. 6 And the mounting position of the releasing projection 144 of the disengagement releasing means 140 is matched.

6, the latching part 127 is formed to extend from the lower part of the seat tube 121 on the inner side of the fastening and holding part 123, and is formed on the inner surface at a predetermined interval in the vertical direction The first and second latching grooves 127a and 127b are continuously formed. The first latching groove 127a is formed at an engaging angle so as not to move upward by being caught by the latching protrusion 147 of the latch releasing means 140. When the first latching groove 127a is engaged with the first latching groove 127a, The releasing means 140 maintains a state of blocking the rotation of the pressing means 130. [

As shown in FIG. 6, the second latching groove 127b is located below the first latching groove 127a. When the second latching groove 127b is engaged with the second latching groove 127b, 140 release the engagement in a state in which the latch moves sufficiently downward so that the pressing means 130 can freely rotate.

Next, the pipe gripping means 110 is extrapolated on the outer circumferential surface of the pipe 3 to grip the pipe and make a hermetic state. That is, the pipe gripping means 110 is installed in a state of being closely attached to the pipe 3 by the pipe connection assembly 100, so as to prevent the pipe from moving, and at the same time, And to maintain confidentiality.

The pipe gripping means 110 may be configured to include a grip ring 111, a first washer 112, an O-ring 113 and a second washer 113. The grip ring 111, the first washer 112, 5, the grip ring 111 has the same structure as that of the conventional grip ring, and strongly clamps the outer surface of the pipe in a state of being bitten by the pipe 3, so as to prevent the pipe 3 from moving .

Next, the first washer 112 has a circular ring shape as a whole, and is made of a thin plate-shaped material. The first washer 112 can be installed in a state where the O-ring 113 is not damaged in the correct position between the other components, that is, between the grip ring 111 and the O-ring 113. [

The O-ring 113 is formed to have a ring shape by a stretchable material, and may be formed so as to have two or more continuous or double structures as required.

The second washer 114 has substantially the same structure as the first washer 111 and is installed in close contact with the upper side of the O-ring 113. The pressing means 130 or the pipe deforming means 150 To protect the O-ring from damage. At this time, the second washer 114 may have a structure in which the second pressing surface 114a having an oblique shape inclined outward is further provided on the upper surface. The second pressing surface 114a serves to effectively deform the pipe 3 by pushing the second pressured surface 153b inward when the pipe deformation means 150 described later enters.

5, the pressurizing means 130 is installed on the outer circumferential surface of the temporary mounting means 120 so as to be detachable, and the pipe gripping means 110 is fixed to the temporary mounting means 120 120 direction and the pipe 1 direction. That is, the pressing means 130 presses the pipe gripping means 110 toward the temporary mounting means 120 in a state where the pressing means is coupled to the temporary mounting means 120, In the state where the means 130 is engaged with the pipe 1, the pipe gripping means 110 is pressed in the pipe direction and the pipe deformation means 150 is strongly pressed inward.

5 and 6, the pressing unit 130 includes a pipe connecting portion 131, a latch groove 132, and a deforming means seating portion 133, . As shown in FIG. 5, the pipe coupling part 131 has a female thread shape to be fastened to the pressing part coupling part 122, and is formed at the lower side of the inner surface of the pressing part 130.

As shown in FIG. 5, the latch groove 132 is repeatedly formed on the lower surface of the pipe coupling part 131, and as shown in FIG. 6, And has a shape and a size of the groove such that the latch groove 132 is engaged with the latch 142 in a state of being coupled with the temporary mounting means 120. In the state where the latch groove 132 and the latch 142 are engaged with each other, the pressing unit 130 can not be rotated, and therefore, the latch unit can not be separated from the threaded temporary mounting means 120.

Next, as shown in FIG. 6, the deforming means seating portion 133 is a constituent element extended from the upper portion of the pipe connecting portion 131 and on which the pipe deforming means 150 is seated. Therefore, the deforming means seating portion 133 has a shape substantially corresponding to the outer shape of the pipe deforming means 150. In particular, the deforming means seating portion 133 is inclined downward so as to strongly press the protrusion moving means 153 inward, A first pressing surface 133a is formed. The first pressing surface 133a is located on the upper oblique surface of the protruding portion moving means 153 as the pressing means 130 advances in the direction of the pipe 1 while being fastened to the pipe 1 by the screw structure, The pressurized surface 153a is pressed inward.

5, the tightening releasing means 140 is installed between the temporary mounting means 120 and the pressing means 130, and the pipe 3 to which the connecting operation is to be carried out is connected to the pressing means 130 130 and the pipe gripping means 110 and presses the temporary mounting means 120 to a predetermined pressure or more, the pressurizing means 130 and the temporary mounting means 120 can be unfastened It is a building component. That is, in this embodiment, the unlocking means 140 is configured such that the pipe 3 to be connected is inserted at a predetermined depth or more in a state where the pressing means 130 and the temporary mounting means 120 are first coupled And releases the fastening state so that the pressing means 130 and the temporary mounting means 120 can be separated only when the fastening releasing means 140 is pressed.

5, the latch releasing means 140 includes a latch mounting portion 141, a latch 142, a latching protruding portion 143, and a releasing protrusion 144 . ≪ / RTI > 5, the latch mounting portion 141 is formed in a horizontal plane, and a shape 146 having a predetermined portion opened to have a connecting piece 145 inserted into the cutout portion 124 I have. Therefore, the connecting piece 145 is formed to have a width that can be inserted into the cut-out portion 124.

5, the latch 142 protrudes upward from the upper surface of the latch mounting portion 141. When the latch 142 is engaged with the latch groove 132 as shown in FIG. 8, And is a component that engages with the latch groove 132 to prevent rotation of the pressing means 130. Specifically, the latch 142 protrudes upward from a portion of the latch mounting portion 141 where the connecting piece 145 is formed to form one or more latches 142.

5 and 6, the latching jaw forming part 143 is formed to extend in the shape of a tube in a lower part of the latch mounting part 141, and first and second latching grooves 127a And 127b, respectively, are formed on the outer circumferential surface of each of the protruding portions 127a and 127b. Therefore, the latching jaw 147 is formed to have an oblique downward side to facilitate entry into the lower side, and a right angle side to the upper side.

5 and 6, the releasing protrusion 144 protrudes downward from the lower surface of the connecting piece 145, and the latch mounting portion 141 is downwardly moved by the piping 1 And moves downward while pushing the elastic piece 126 as it moves. That is, if the elastic piece 126 is pushed down while the releasing projection 144 moves downward, there is no change in the positional relationship between the temporary mounting means 120 and the pressing means 130, 140 are away from the pressing means 130. [ Then, as the latch 142 moves downward together with the latch groove 132, the state of engagement with the latch groove 132 is released, and the pressing means 130 can freely rotate.

5, the pipe deformation means 150 is inserted into the pressure means 130. When the pressure means 130 is completely fastened to the pipe 1 to be connected, And presses the outer surface of the pipe 3 to deform it. That is, the pipe deforming means 150 maintains the expanded state in a state where the pressing means 130 is engaged with the temporary mounting means 120, while the pressing means 130 is coupled with the pipe 1 And the outer surface of the pipe 3 is strongly pressed so that a part of the pipe 3 is bent and deformed inward.

5 and 6, the pipe deforming means 150 may include a main body 151, a deformed protrusion 152, and a protrusion moving means 153. The main body 151, the deformed protrusion 152, As shown in FIG. 5, the main body 151 is a circular tube as a whole, and is a component having a first incision 154 formed by being partially cut from the upper side to the lower side at regular angular intervals. Accordingly, when an external force is applied by the first cutout 154, the main cutout 151 may be deformed into a shape in which the first cutout 154 is compressed in a state of minimizing the overall shape.

5 and 6, the deformed protrusion 152 is annularly protruded inwardly from the inner surface of the body 151. The deformed protrusion 152 is inserted into the pipe 3 ) By press-deforming the outer surface of the base plate (2). 7, the deformed protrusions 152 are separated from each other in the expanded state, but are in close contact with each other in the compressed state to have an annular shape, and in this annular state, As shown in Fig. Therefore, the deformed portion of the outer surface of the pipe 3 is also deformed annularly. It is preferable that the deformed protrusion 152 is made of a metal material having a hardness higher than that of the main body 151 because the pipe 3 can be more easily deformed.

5 and 6, the protrusion moving unit 153 is formed to protrude outward at the lower side of the outer surface of the main body 151, and the direction of the pipe 1 And is a component that moves the deformed projection 152 inward by advancing. That is, the protruding portion moving means 153 is moved inward while pushing the first pressing surface 133a as the pressing means 130 is coupled with the pipe 1 and advances toward the pipe 1, So that the deformed protrusion 152 deforms while pushing the pipe 3.

Therefore, as shown in FIGS. 5 and 6, the protruding portion moving means 153 is preferably provided with first and second pressured surfaces 153a and 153b, which are formed on both upper and lower sides, respectively. The first and second pressured surfaces 153a and 153b are pressed while being in close contact with the first pressing surface 133a of the pressing means 130 and the second pressing surface 114a of the second washer respectively.

Also, the protruding portion moving means 153 may be formed with a second cutout portion 156 spaced outward at a predetermined interval. The second incision portion 156 is also formed to facilitate the compression of the pipe deforming means 150 like the first incision portion 154.

100: a pipe connection assembly according to an embodiment of the present invention
110: pipe gripping means 120: provisional mounting means
130: pressing means 140: fastening releasing means
150: pipe deformation means 1: piping
3: pipe

Claims (8)

A pipe gripping means provided on an outer circumferential surface of the pipe for gripping the pipe and simultaneously forming a tightly sealed state;
Temporary mounting means for temporarily mounting the pipe gripping means in a state in which the pipe gripping means can be inserted into the pipe;
A pressing means which is screwed to the outer circumferential surface of the temporary mounting means so as to be removable and which presses the pipe gripping means in the direction of the temporary mounting means;
Wherein when the pipe through which the connection operation is to be performed passes through the pressing means and the pipe gripping means and presses the temporary mounting means at a predetermined pressure or more, the pressing means and the temporary mounting means are provided between the temporary mounting means and the pressing means, Tightening releasing means for releasing the fastening;
And pipe deforming means which is inserted into the pressure means and which presses and deforms the outer surface of the pipe while the pressure means is completely fastened to the pipe to be connected,
Wherein the pipe gripping means comprises:
A grip ring which is seated in a state of being in contact with a seat part provided in the temporary mounting means and grips an outer surface of the pipe to prevent movement in a direction opposite to the entering direction;
A first washer which is seated on the seat portion in contact with the upper surface of the grip ring;
An O-ring that is seated on the seating portion in a state of being in contact with the upper surface of the first washer, and is in tight contact with the outer surface of the pipe to maintain a hermetic state;
And a second washer which is seated on the seating part in a state of being in contact with the upper surface of the O-ring and is provided with a second pressing surface in the form of a beveled surface inclined outward on the upper surface,
The pipe deformation means includes:
A body formed as a circular tube as a whole and having a first incision part formed by being partially cut from an upper side to a lower side at regular angular intervals;
A deformed protrusion which is annularly protruded inwardly on an inner surface of the main body and presses and deforms the outer surface of the pipe interpolated by compressive deformation of the main body;
And protruding portion moving means protruding outwardly from the outer surface of the main body to move the deformable protruding portion inward by forward movement of the deformable means seating portion provided in the pressing means,
Wherein the protruding portion moving means has first and second pressing surfaces formed on both upper and lower sides in an oblique plane, respectively. 2. The apparatus according to claim 1,
A seating tube having a cutout at a position facing each other and having a seating portion on which the pipe gripping means is seated;
A pressing means fastening portion formed in a male screw shape on an outer surface of the seat tube;
A fastening and holding unit having a diameter larger than that of the seat tube at the bottom of the seat tube and having an elastic piece deformed by an external force applied to the seat tube;
And a latching part having first and second latching grooves formed on the inner side of the fastening and retaining part and extending from a lower portion of the seat tube, the latching part being spaced apart in a vertical direction. delete The apparatus according to claim 2,
A pipe coupling portion having a female screw shape to be engaged with the pressing means coupling portion;
A latch groove formed on the lower surface of the pipe coupling portion so as to be repeatedly provided with an uneven shape;
And a deforming means seating portion formed on the upper portion of the pipe connecting portion and on which the pipe deforming means is seated. 5. The apparatus according to claim 4,
A latch mounting portion having a connecting piece inserted into the incision portion;
A latch protruding upward from an upper surface of the latch mounting portion and engaging with the latch groove when engaged with the latch groove to prevent rotation of the pressing means;
A latching protrusion formed on the lower outer surface of the latch mounting part in a tubular shape and having a latching protrusion protruded outward to be engaged with the first latching recess;
And a release protrusion protruded downward from a lower surface of the connecting piece, the release protrusion moving downward while pushing the elastic piece as the latch mounting part moves downward by the piping. delete The optical module according to claim 1,
Wherein the main body is made of a material having higher hardness than the main body. delete

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