TWI785294B - Camera casing assembly, auxiliary assembly tool and assembly method - Google Patents

Abstract

The present invention provides a camera housing element, comprising: a housing having an inner side, an outer side and a through hole; an optical cover having a protrusion and a flange extending laterally from the protrusion, wherein the protrusion is configured to pass through The through hole of the housing protrudes to the outside of the housing, and the flange is set against the inside of the housing; the sealing ring is arranged between the flange of the optical cover and the inside of the housing; the pressure plate is set against the inside of the housing The flange of the optical cover, and includes a plurality of screw holes; and a plurality of screws, which are used to fix the pressure plate on the housing; wherein, a plurality of hooks are provided around the through hole inside the housing, and the plurality of hooks The shape is configured to retain the pressure plate with the housing when the pressure plate is positioned relative to the housing. The invention also provides an auxiliary assembly tool and an assembly method for assembling the camera housing components. The technical solution of the invention can further reduce assembly risk, reduce production cost and time without reducing product quality and protection performance.

Description

Camera housing component, auxiliary assembly tool and assembly method

The invention relates to the technical field of cameras, in particular to a camera casing element, an auxiliary assembly tool and an assembly method.

For cameras working in certain application scenarios (for example, outdoor cameras or video surveillance cameras), in order to provide sufficient explosion-proof performance and waterproof and dustproof performance, the product must meet IK10 and IP66 level tests. For this reason, existing outdoor cameras or video surveillance cameras usually use thicker optical covers, sealing rings, pressing plates (for example, metal plates), screws and housings (for example, aluminum housings), and press the pressing plates, optical covers by screws The sealing ring and the casing are fixed together in order to form a camera casing element for protecting the camera and other electronic devices. In this way, the waterproof and dustproof performance is provided by the sealing ring, and the explosion-proof performance is provided by the screw and the pressure plate. Typically, designers will evenly arrange multiple screws (for example, 8 or more) on the pressure plate to firmly hold these pressure plates and the housing together to provide sufficient and uniform protection. However, the more screws used, the greater the potential assembly risk, and the higher the production cost and the longer the production time.

Therefore, there is a need for an improved camera housing element, auxiliary assembly tool and assembly method to reduce assembly risk, reduce production cost and production time.

The object of the present invention is to provide an improved camera housing element, auxiliary assembly tool and assembly method to solve the above technical problems.

Therefore, according to an aspect of the present invention, a camera housing element is provided, including: a housing having an inner side, an outer side and a through hole; an optical cover having a protrusion and a a flange extending laterally with a protruding portion, wherein the protruding portion is arranged to protrude to the outside of the housing through a through hole of the housing, and the flange is arranged to abut against the housing the inner side of the optical cover; the sealing ring is arranged between the flange of the optical cover and the inner side of the housing; the pressure plate is arranged against the flange of the optical cover and includes a plurality of screw holes; and a plurality of screws for fixing the pressure plate on the housing; wherein a plurality of hooks are provided around the through holes on the inner side of the housing , the plurality of hooks configured to retain the pressure plate with the housing when the pressure plate is positioned relative to the housing.

Optionally, the pressing plate is provided with a plurality of openings configured to allow the plurality of hooks to pass through and allow the pressing plate to rotate relative to the housing.

Optionally, the pressure plate is further provided with a plurality of first stoppers, and the plurality of first stoppers are configured to engage with the plurality of hooks when the pressure plate is positioned relative to the housing. abut to hold the pressure plate and the housing together.

Optionally, the pressing plate is further provided with at least one second stopper, and the at least one second stopping portion is configured to engage with the plurality of hooks when the pressing plate is positioned relative to the housing. At least one of them abuts to stop the continuous rotation of the pressing plate.

Optionally, a protrusion is formed on one side of the pressure plate, and a recess is formed on the other side of the pressure plate, wherein the protrusion of the pressure plate abuts against the flange of the optical cover.

Optionally, the plurality of hooks and the plurality of screws are evenly spaced apart in an alternate manner.

According to another aspect of the present invention, there is provided a camera housing for assembling An auxiliary assembly tool for components, the auxiliary assembly tool includes a body, wherein the body includes an end portion, and the end portion is provided with a guide pin, and the guide pin is configured to cooperate with the screw hole on the pressure plate to Drive the pressing plate to be positioned relative to the housing.

Optionally, the end of the body further includes a protrusion, and the size of the protrusion of the body is set so that when the protrusion of the body cooperates with the recess of the pressure plate, the guide pin can be inserted into the and the guide pin cannot be inserted into the screw hole of the pressure plate when the protrusion of the body cooperates with the protrusion of the pressure plate.

Optionally, the body further includes a peripheral portion provided with a plurality of grooves, and the plurality of grooves of the body are configured to receive the plurality of hooks of the housing.

According to yet another aspect of the present invention, there is provided a method for assembling the aforementioned camera housing components using the aforementioned auxiliary assembly tool, the method comprising: placing a sealing ring on the inner side of the housing; placing an optical cover on the inner side of the housing; On the through hole of the housing, the protrusion of the optical cover protrudes from the through hole, and the flange of the optical cover is against the inner side of the housing; the pressure plate is placed on the inner side of the housing , so that the pressure plate is against the flange of the optical cover; the auxiliary assembly tool is placed on the pressure plate, and the guide pin of the body of the auxiliary assembly tool is inserted into the screw hole of the pressure plate; rotate The main body of the auxiliary assembly tool, so that the pressure plate is rotated relative to the housing until the pressure plate is positioned relative to the housing; remove the auxiliary assembly tool, and install screws to attach the housing, The sealing ring, the optical cover and the pressing plate are fixed together.

The camera housing element, auxiliary assembly tool and assembly method of the present invention can further reduce assembly risk, reduce production cost and production time without reducing product quality and protection performance.

10: Housing

11: Hook

12: Through hole

13: Groove

20: Optical cover

21: protrusion

22: Flange

30: sealing ring

40: Platen

41: opening

42: The first stopper

43: The second stopper

44: screw hole

45: protrusion

46: concave part

47: edge

50: screw

60: Ontology

61: Guide pin

62: protrusion

63: Slot

Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. need to refer It is noted that the scales of the various figures may be different for the purpose of clarity, but this does not affect the understanding of the invention. In the drawings: Fig. 1 is an exploded perspective view of the camera housing element of the present invention, showing auxiliary assembly tools; Fig. 2 is a schematic sectional view of the camera housing element shown in Fig. 1, showing The auxiliary assembly tool in the assembled state is shown; Fig. 3 to Fig. 7 are views showing step by step the method for assembling camera housing elements using the auxiliary assembly tool of the present invention; Fig. 8A and 8B are respectively showing the Views of the correct and incorrect fit of the camera housing element's pressure plate with the auxiliary assembly tool.

Exemplary embodiments of the present invention will be described in detail below with reference to examples. However, those skilled in the art should understand that these exemplary embodiments do not imply any limitation to the present invention. In addition, the features in the embodiments of the present invention can be combined with each other under the condition of no conflict. In different drawings, the same or similar parts are indicated by the same reference numerals, and other parts are omitted for the sake of brevity, but this does not mean that the camera housing elements and auxiliary assembly tools of the present invention cannot The inclusion of other parts or parts does not imply that the assembly method of the present invention cannot include other steps. It should be understood that the size, proportional relationship and number of components in the drawings are not intended to limit the present invention.

The camera housing assembly of the present invention will be described below with reference to FIGS. 1 and 2 . As shown in FIG. 1 , the camera housing assembly of the present invention may include a housing 10 , an optical cover 20 , a sealing ring 30 , a pressing plate 40 and screws 50 . The housing 10 may have an inner side, an outer side and a through hole 12, wherein the inner side of the housing 10 can be used to accommodate components such as a sealing ring 30, an optical cover 20, a pressure plate 40, and a camera (not shown), and the outer side of the housing 10 can be used for surface To the external environment, and the through hole 12 of the housing can be used to make the optical cover 20 protrude. The optical cover 20 may have a protrusion 21 and a flange 22 extending laterally from the protrusion 21 , wherein the protrusion 21 may be disposed through the case The through hole 12 of the body 10 protrudes to the outside of the case 10 , and the flange 22 may be provided to abut against the inside of the case 10 . When the optical cover 20 is installed to the housing 10 , the protruding portion 21 of the optical cover 20 forms a space for accommodating the camera, so that the camera can rotate in the space for multi-angle shooting. A sealing ring 30 may be disposed between the flange 22 of the optical cover 20 and the inside of the housing 10 to provide a watertight and dusttight seal. In order to facilitate the positioning of the sealing ring 30 , grooves may be respectively provided on the flange 22 of the optical cover 20 and/or the inner side of the housing 10 , as shown in FIG. 2 . The pressing plate 40 may abut against the flange 22 of the optical cover 20 to press the flange 22 of the optical cover 20 on the inner side of the housing 10 . The pressing plate 40 may include a plurality of screw holes 44 , and the plurality of screw holes 44 cooperate with a plurality of screws 50 to fix the pressing plate 40 on the housing 10 .

According to an embodiment of the present invention, as shown in FIGS. 1 and 2 , a plurality of hooks 11 are provided around the through hole 12 on the inner side of the housing 10 , and the plurality of hooks 11 are configured so that when the pressure plate 40 is positioned relative to the housing, When the body 10 is positioned, the pressure plate 40 can be kept together with the housing 10 . As shown in FIG. 2 , in the assembled state, the edge 47 of the pressing plate 40 is hooked by the hook 11 of the housing 10, so that when the optical cover 20 is impacted by an external force, the edge 47 of the pressing plate 40 abuts against the hook 11 and Will not be separated from the housing 10. Therefore, the hook 11 of the housing 10 plays the role of providing explosion-proof performance, and the screw 50 and the sealing ring 30 play the role of providing water-proof and dust-proof performance. Correspondingly, the hook 11 of the housing 10 can replace the originally planned screws, so that the number of screws used can be reduced, cost and time can be reduced, and the performance and quality of the product can not be reduced. In order to provide uniform force distribution, a plurality of hooks 11 and a plurality of screws 50 may be evenly spaced apart in an alternate manner.

Specifically, the hook 11 of the housing 10 can be provided with a groove 13 facing the through hole 12 to accommodate the edge 47 of the pressure plate 40, so that when the optical cover 20 is impacted by an external force, the edge 47 of the pressure plate 40 abuts against the hook. The side wall of the groove 13 of the shape member 11. In Fig. 2, for the purpose of clear illustration, the edge 47 of the pressure plate 40 and the upper side wall of the groove 13 of the hook 11 are shown as having a gap, and in the assembled state, due to the elasticity of the sealing ring 30, the pressure plate 40 The edge 47 of the hook 11 can abut against the upper side wall of the groove 13 . The matching relationship between the width of the groove 13 and the thickness of the edge 47 of the pressure plate 40 can be specifically set according to the elasticity of the sealing ring 30 and the required protection performance, and will not be described in detail herein. Of course, the hook 11 of the housing 10 can also adopt different As shown in FIGS. 1 and 2 , as long as the hook 11 can catch the pressing plate 40 in the assembled state. For example, the groove 13 of the hook 11 may be arranged facing away from the through hole 12 or toward the circumferential direction of the through hole 12 . It should be noted that the position of the hook 11 does not prevent the installation of the optical cover 20 .

Correspondingly, as shown in FIGS. 1 and 2 , the pressure plate 40 may be provided with a plurality of openings 41 configured to allow the plurality of hooks 11 of the housing 10 to pass through, and allow the pressure plate 40 to move relative to the The housing 10 is positioned, for example, by relative rotation. In this way, the optical cover 20 can be pressed against the housing 10 by pressing the pressing plate 40 against the flange 22 of the optical cover 20 . The opening 41 can be configured to allow the pressure plate 40 to be positioned relative to the housing 10 by rotation. In this way, when the pressing plate 40 is positioned relative to the housing 10 , the edge of the pressing plate 40 can be hooked by the hook 11 to hold the pressing plate 40 . In order to limit the portion of the pressure plate 40 that is hooked by the hook 11 , a plurality of first stop portions 42 may be formed on the pressure plate 40 , and the plurality of first stop portions 42 are configured so that when the pressure plate 40 is relative to the housing 10 After being positioned, it abuts against a plurality of hooks 11 to keep the pressing plate 40 and the housing 10 together. As shown in FIG. 1 , the first stop portion 42 may be a part of the edge 47 extending from the sidewall of the opening 41 . In addition, in order to limit the positioning position of the pressure plate 40 (for example, to limit the angle of rotation of the pressure plate 40), the pressure plate 40 can also be provided with at least one second stop portion 43, and the at least one second stop portion 43 is configured to act as the pressure plate 40 After being positioned relative to the housing 10 , it abuts against at least one of the plurality of hooks 11 to block the further rotation of the pressing plate 40 . As shown in FIG. 1 , the second stop portion 43 may be a protruding portion extending laterally from the first stop portion 42 .

In the above embodiment shown in FIGS. 1 and 2 , the opening 41 of the pressing plate 40 is a notch, and the first stopper portion 42 and the second stopper portion 43 are gradually raised from the sidewall of the opening 41 extending circumferentially. The stepped portion, however, the present invention is not limited thereto. The opening 41 of the pressing plate 40 may also be a complete hole, and the first stopper 42 and the second stopper 43 may be gradually descending stepped portions extending circumferentially from the sidewall of the opening 41 . Certainly, when the groove 13 of the hook-shaped member 11 is arranged to open toward the circumferential direction of the through hole 12, the hook-shaped member 11 can be directly hooked on one side wall of the opening 41, so that the first stop portion 42 can be formed by the lateral direction. The second stop portion 43 can be provided by the sidewall of the opening 41 .

The pressure plate 40 is generally a flat plate-like member and is usually made of metal. Press plate of the present invention 40 may be stamped from sheet material so that a protrusion 45 is formed on one side of the platen 40, a recess 46 is formed on the other side of the platen 40, and an edge 47 of the platen 40 is formed transversely to the protrusion 45 and the recess 46, as Figures 1 and 2 show. The opening 41 , the first stop portion 42 , the second stop portion 43 and the screw hole 44 can all be provided in the edge 47 of the pressure plate 40 . In the assembled state, the protrusion 45 of the pressure plate 40 can resist the flange 22 of the optical cover 20 to press the optical cover 20 on the housing 10 . In the embodiment shown in FIG. 1 , the pressing plate 40 is provided with four openings 41 , four first stop portions 42 and four second stop portions 43 , however, more or fewer openings 41 may also be provided. , the first stopper 42 and the second stopper 43, and their numbers may not be the same, for example, only second stoppers 43 less than the number of openings 41 may be provided, for example, only one second stopper 43 may be provided. stopper 43 .

The structure of the camera housing element of the present invention has been described above with reference to FIGS. 1 and 2 , and the auxiliary assembly tool for assembling the camera housing element of the present invention will be described below with reference to FIGS. 1 , 2 and 8A and 8B.

The auxiliary assembly tool of the present invention includes a body 60 that may have an end that may be provided with a guide pin 61 (as shown in FIGS. The holes 44 cooperate to drive the positioning of the pressure plate 40 relative to the housing 10, for example by relative rotation. Further, in order to facilitate the positioning of the auxiliary assembly tool, the pressure plate 40 and the housing 10, the body 60 may be provided with a plurality of grooves 63 on the peripheral portion, and the plurality of grooves 63 of the body 60 may be configured to receive the housing 10. A plurality of hooks 11. In this way, when the hook 11 of the housing 10 is positioned in the groove 63 of the body 60, for example, against one side of the groove 63, since the hook 11 of the housing 10 has passed through the opening 41 of the pressing plate 40, So it can be confirmed that the guide pin 61 of the body 60 will be aligned with the screw hole 44 of the pressure plate 40 . By turning the auxiliary assembly tool, the pressing plate 40 can be turned so that the edge 47 of the pressing plate 40 is hooked by the hook 11 and kept together with the housing 10 .

Further, the end of the body 60 of the auxiliary assembly tool is also provided with a protruding portion 62, which can be set so that when the protruding portion 62 of the body 60 cooperates with the recessed portion 46 of the pressure plate 40, the guide pin 61 can be inserted into the pressure plate 40 in the screw hole 44. On the contrary, when the protrusion 62 of the body 60 is engaged with the protrusion 62 of the pressure plate 40 , the guide pin 61 cannot be inserted into the screw hole 44 of the pressure plate 40 . In this way, auxiliary assembly tools can It serves as an error prevention tool to help operators check whether the pressing plate 40 is placed correctly, thereby further reducing operator errors and improving assembly quality. The cooperation between the auxiliary assembly tool and the pressing plate 40 will be further described in detail with reference to FIGS. 8A and 8B later in the description of the assembly method of the present invention.

Based on the camera housing element and the auxiliary assembly tool of the present invention, the assembling method of the present invention can be realized. The method for assembling the camera housing components using the auxiliary assembly tool of the present invention will be further described below with reference to FIGS. 3 to 7 .

As shown in Figure 3, first sealing ring 30 is placed on the inner side of housing 10, if there is groove on housing 10, then sealing ring 30 can be placed in the groove of housing 10 (as shown in Figure 2 ); then the optical cover 20 is placed on the through hole 12 of the housing 10 (along the arrow direction in the left part of FIG. The rim 22 abuts against the inside of the housing 10 (as shown in the right part of FIG. 3 ).

Then, as shown in FIG. 4, the pressure plate 40 is placed on the inner side of the housing 10 (in the direction of the arrow in the left part of FIG. section shown). It should be noted that when the pressure plate 40 is placed, the opening 41 of the edge 47 of the pressure plate 40 should be aligned with the hook 11 of the housing 10 (eg, with the hook 11 against the side of the opening 41 ).

Next, place the auxiliary assembly tool on the pressing plate 40 , and insert the guide pin 61 of the body 60 of the auxiliary assembling tool into the screw hole 44 of the pressing plate 40 , as shown in FIG. 5 . To facilitate the alignment of the guide pin 61 of the auxiliary assembly tool with the screw hole 44 of the pressure plate 40 , the groove 63 on the peripheral portion of the body 60 of the auxiliary assembly tool can be aligned with the hook 11 of the housing 10 . When the grooves 63 on the peripheral portion of the body 60 of the auxiliary assembly tool are aligned with the hooks 11 of the housing 10 , it can be determined that the guide pins 61 of the auxiliary assembly tool will be aligned with the screw holes 44 of the pressure plate 40 .

Then, as shown in FIG. 6 , the auxiliary assembly tool is rotated so that the pressing plate 40 rotates relative to the housing 10 until the pressing plate 40 is positioned relative to the housing 10 , that is, the rotation of the pressing plate 40 is blocked. For example, the second stopper 43 is in contact with the hook 11 .

It should be noted that in this step, the auxiliary assembly tool can function as an error-proof tool for checking whether the pressing plate 40 is placed correctly. For example, if the pressing plate 40 is placed correctly, as shown in FIG. Align and insert (as shown in the circle in FIG. 8A ), so that the pressing plate 40 can be driven to rotate relative to the housing 10 . Conversely, if the pressing plate 40 is placed incorrectly, as shown in the wrong mating state shown in FIG. The holes 44 are inserted in alignment (as shown in the circle in FIG. 8B ), so that the platen 40 cannot be rotated. At this time, the operator can immediately notice the mistake and turn over the pressing plate 40, which can ensure correct installation and save time.

Then, the auxiliary assembly tool is removed, and the screws 50 are installed to fix the casing 10, the sealing ring 30, the optical cover 20 and the pressing plate 40 together to form the camera casing assembly of the present invention.

Compared with the existing camera housing components, the camera housing components and assembly method of the present invention change the assembly relationship between the housing and the pressure plate, and use the hooks of the housing to hold the pressure plate in advance and keep it Level, so that the operator on the production line can easily tighten the screws without needing to keep the platen balanced by hand, which can reduce operator errors and improve assembly quality. In addition, the auxiliary assembly tool of the present invention can make it easier to locate the pressing plate at the correct position and serve as an error-proof tool to help operators check whether the pressing plate is placed correctly, thereby further reducing operator errors and improving assembly quality. Furthermore, the camera housing element of the present invention can halve the number of originally planned screws, thereby significantly reducing production cost and production time. Moreover, the hooks on the housing are not only used to hold the pressure plate, but also assume the same role as the replaced screws to meet the requirements of the IK10 protection class. At the same time, the remaining screws and sealing rings can meet the requirements of IP66 protection level. Thus, cost and time can be saved without compromising product quality.

The present invention has been described in detail above in conjunction with specific embodiments. Apparently, the above description and the embodiments shown in the accompanying drawings should be understood as exemplary rather than limiting the present invention. system. For example, in the preferred embodiment, the present invention has been described by taking an outdoor camera or a video surveillance camera as an example, but the present invention is not limited to such camera housings, but can be used in any camera housing that requires explosion-proof performance and waterproof and dustproof performance. In the field of casings, the present invention can be applied. For those skilled in the art, various variations or modifications can be made without departing from the spirit of the present invention, and none of these variations or modifications departs from the scope of the present invention.

10: Shell

11: Hook

12: Through hole

13: Groove

20: Optical cover

21: protrusion

22: Flange

30: sealing ring

40: Platen

41: opening

42: The first stopper

43: The second stopper

44: screw hole

50: screw

60: Ontology

63: Slot

Claims (10)

A camera housing element, comprising: a housing (10), the housing having an inner side, an outer side and a through hole (12); an optical cover (20), the optical cover (20) having a protrusion (21) and a flange (22) extending transversely from the protrusion (21), wherein the protrusion (21) is arranged to protrude through the through hole (12) of the housing (10) to the case The outer side of the body (10), and the flange (22) is set against the inner side of the housing (10); the sealing ring (30), the sealing ring (30) is set on the optical cover Between the flange (22) of (20) and the inner side of the housing (10); a pressure plate (40), the pressure plate (40) is set against the flange (22) of the optical cover (20) ), and includes a plurality of screw holes (44); and a plurality of screws (50), the plurality of screws are used to fix the pressure plate (40) on the housing (10); it is characterized in that, The inner side of the housing (10) is provided with a plurality of hooks (11) around the through hole (12), and the plurality of hooks (11) are configured so that when the pressure plate (40) is relatively The pressing plate (40) and the housing (10) can be kept together when the housing (10) is positioned. The camera housing element according to claim 1, wherein the pressure plate (40) is provided with a plurality of openings (41), and the plurality of openings (41) are configured to enable the plurality of hooks ( 11) passes through and allows positioning of the pressure plate (40) relative to the housing (10). The camera housing element according to claim 2, wherein the pressure plate (40) is further provided with a plurality of first stoppers (42), and the plurality of first stoppers (42) are configured to be The pressure plate (40) abuts against the plurality of hooks (11) when positioned relative to the housing (10) to hold the pressure plate (40) and the housing (10) together . The camera housing element according to claim 3, wherein said pressure plate (40) is also At least one second stopper (43) is provided, and the at least one second stopper (43) is configured to align with the multiple At least one of the two hooks (11) abuts against to stop the further rotation of the pressing plate (40). The camera housing element according to any one of claims 1 to 4, wherein a protrusion (45) is formed on one side of the pressure plate (40), and a protrusion (45) is formed on the other side of the pressure plate (40) A recess (46) is formed, wherein the protrusion (45) of the pressure plate (40) abuts against the flange (22) of the optical cover (20). The camera housing element according to any one of claims 1 to 4, wherein the plurality of hooks and the plurality of screws are arranged evenly spaced apart in an alternating manner. An auxiliary assembly tool for assembling the camera housing element according to claim 1, the auxiliary assembly tool includes a body (60), and the body (60) includes an end, characterized in that the end There is a guide pin (61) on the part, and the guide pin (61) is configured to cooperate with the screw hole (44) on the pressure plate (40) of the camera housing assembly, so as to drive the pressure plate (40) relative Positioned on the housing (10). The auxiliary assembly tool according to claim 7, wherein the end of the body (60) further includes a protrusion (62), and the protrusion (62) of the body (60) is set so that when the body (60) ) when the protruding portion (62) of the pressing plate (40) is matched with the concave portion (46) of the pressing plate (40), the guide pin (61) can be inserted into the screw hole (44) of the pressing plate (40), and when the When the protruding part (62) of the body (60) cooperates with the protruding part (45) of the pressing plate (40), the guide pin (61) cannot be inserted into the screw hole (44) of the pressing plate (40). The auxiliary assembly tool according to claim 8, wherein the body (60) further includes a peripheral portion, the peripheral portion is provided with a plurality of grooves (63), and the plurality of grooves (63) of the body (60) A plurality of hooks (11) configured to receive said housing (10). A method for assembling the camera housing element according to claim 1 using the auxiliary assembly tool according to claim 7, the method comprising: The sealing ring (30) is placed on the inner side of the housing (10); the optical cover (20) is placed on the through hole (12) of the housing (10), so that the protrusion of the optical cover (20) part (21) protrudes from the through hole (12), and the flange (22) of the optical cover (20) abuts against the inner side of the housing (10); place the pressure plate (40) on the housing on the inner side of the body (10) so that the pressure plate (40) rests against the flange (22) of the optical cover (20); place the auxiliary assembly tool on the pressure plate (40) so that the The guide pin (61) of the body (60) of the auxiliary assembly tool is inserted in the screw hole (44) of the pressure plate (40); the main body (60) of the auxiliary assembly tool is rotated so that the pressure plate (40) is relatively The housing (10) is rotated until the pressing plate (10) is positioned relative to the housing (10); the auxiliary assembly tool is removed, and the screws (50) are installed, so that the housing (10) , the sealing ring (30), the optical cover (20) and the pressing plate (40) are fixed together.

Images