以下顯示本發明之一實施形態。以下所說明之個別之實施形態可有助於理解本發明之上位概念、中位概念及下位概念等各種概念。又，本發明之技術性範圍係由申請專利範圍確定，而非由以下之個別之實施形態限定。One embodiment of the present invention is shown below. The individual embodiments described below are useful for understanding various concepts such as the high-level concept, the middle-level concept, and the low-level concept of the present invention. In addition, the technical scope of the present invention is defined by the scope of claims, not limited by the following individual embodiments.
圖1係顯示光電開關之立體圖。光電開關1具有大致長方形之殼體。此處，z軸與長邊方向對應。x軸與短邊方向對應。y軸與高度方向對應。殼體具有大致六個外表面。六個外表面包含上表面、底面、正面、背面、左側面及右側面。在圖1中可觀察到上表面、正面、及右側面。殼體具有下外殼2及上外殼3。藉由將下外殼2與上外殼3嵌合，而形成供收容控制基板等之內部空間。上外殼3之一部分形成上表面。在上表面設置有顯示器5、模式按鈕7、主動接收器按鈕8、調整按鈕9、滑動開關10、設置按鈕11、顯示燈24、及夾持模組14等。顯示器5係OLED等之點矩陣顯示器，顯示臨限值或受光量等。顯示器5係由上外殼3之外表面與罩構件4夾持而被固定。顯示器5設置為較上表面之中心更朝正面側偏移。調整按鈕9係用於使臨限值上下或操作選單之按鈕。所謂選單係指顯示在顯示器5且具有用於設定光電開關1之動作之各種設定項目的選單。模式按鈕7係用於切換與投光量等關聯之動作模式之按鈕。主動接收器按鈕8係用於自光電開關1朝外部經由受光光纖投射光的特殊之按鈕。光電開關1當檢測到主動接收器按鈕8之按下時將受光光纖兼用作投光光纖，一面接收自外部入射而來之光，一面朝向外部投射光。該光並非是用於檢測工件之光，而是用於輔助使用者之光軸調整之光。此外，輸出輔助光之發光元件例如可配置於受光元件之中央。此時，受光元件之受光面大於發光元件之發光面。滑動開關10係用於選擇複數個設定參數組之開關。設置按鈕11係用於開始臨限值之自動設定之按鈕。光電開關1當檢測到設置按鈕11被按壓時，根據受光量決定臨限值。顯示燈24例如當檢測到工件時點亮或熄滅。夾持模組14係夾持並保持投光光纖與受光光纖之模組。在殼體之正面設置有供投光光纖***之筒狀之孔12、及供受光光纖***之筒狀之孔13。在殼體之背面安裝有輸出纜線。纜線襯套15係用於保持輸出纜線之襯套。Figure 1 is a perspective view showing a photoelectric switch. The photoelectric switch 1 has a substantially rectangular housing. Here, the z axis corresponds to the longitudinal direction. The x-axis corresponds to the short-side direction. The y-axis corresponds to the height direction. The housing has approximately six outer surfaces. The six outer surfaces include an upper surface, a bottom surface, a front surface, a back surface, a left side and a right side. In FIG. 1 the upper surface, the front side, and the right side can be seen. The housing has a lower shell 2 and an upper shell 3 . By fitting the lower case 2 and the upper case 3, an internal space for accommodating a control board and the like is formed. A part of the upper case 3 forms the upper surface. A display 5, a mode button 7, an active receiver button 8, an adjustment button 9, a slide switch 10, a setting button 11, a display light 24, and a clamping module 14 are arranged on the upper surface. The display 5 is a dot-matrix display such as OLED, which displays the threshold value or the amount of light received. The display 5 is fixed by sandwiching the outer surface of the upper case 3 and the cover member 4 . The display 5 is arranged to be shifted toward the front side more than the center of the upper surface. The adjustment button 9 is a button used to make the threshold value go up or down or operate the menu. The so-called menu refers to the menu displayed on the display 5 and having various setting items for setting the action of the photoelectric switch 1 . The mode button 7 is a button for switching operation modes associated with the amount of light projected and the like. The active receiver button 8 is a special button used to project light from the photoelectric switch 1 to the outside through the light-receiving optical fiber. When the photoelectric switch 1 detects that the active receiver button 8 is pressed, the light-receiving optical fiber is also used as the projecting optical fiber, and one side receives the incident light from the outside, and the other side projects the light towards the outside. This light is not used to detect workpieces, but is used to assist the user in adjusting the optical axis. In addition, a light emitting element that outputs auxiliary light may be arranged, for example, at the center of the light receiving element. At this time, the light-receiving surface of the light-receiving element is larger than the light-emitting surface of the light-emitting element. The slide switch 10 is a switch for selecting a plurality of setting parameter groups. The setting button 11 is a button for starting the automatic setting of the threshold value. When the photoelectric switch 1 detects that the setting button 11 is pressed, the threshold value is determined according to the amount of light received. The display lamp 24 is turned on or off when a workpiece is detected, for example. The clamping module 14 is a module for clamping and holding the projecting optical fiber and the receiving optical fiber. A cylindrical hole 12 for inserting the light-emitting optical fiber and a cylindrical hole 13 for inserting the light-receiving optical fiber are arranged on the front of the housing. The output cable is installed on the back of the case. The cable bushing 15 is a bushing for holding output cables.
在殼體之右側面設置有連接器16a、及連結部17a、17b。圖2(A)顯示複數個光電開關1分別藉由連接器16a、及連結部17a、17b相互連結，且被固定於DIN軌道18。DIN係德國標準化協會之簡稱。投光光纖22之入射端被***孔12，受光光纖23之出射端被***孔13。在圖2(A)中亦顯示覆蓋殼體之上表面之可開閉的上罩19。此外，如圖2(B)所示，當上罩19具有透光性時，可在上罩19之上表面不設置孔。此係由於若為具有透光性之上罩19，則即便上罩19為關閉之狀態，使用者仍可確認顯示器5之顯示內容之故。當上罩19不具有透光性時，如圖2(A)所示，可在上罩19之上表面設置孔乃至窗。上罩19作為防塵罩而發揮功能。如圖2(A)、圖2(B)所示，複數個光電開關1由於可分別橫向連結故亦被稱為連設型感測器。A connector 16a and connection parts 17a and 17b are provided on the right side of the housing. FIG. 2(A) shows that a plurality of photoelectric switches 1 are connected to each other through connectors 16a and connecting parts 17a and 17b respectively, and are fixed on a DIN rail 18 . DIN is the abbreviation of German Institute for Standardization. The incident end of the projecting optical fiber 22 is inserted into the hole 12 , and the outgoing end of the light receiving optical fiber 23 is inserted into the hole 13 . An openable and closable upper cover 19 covering the upper surface of the casing is also shown in FIG. 2(A). In addition, as shown in FIG. 2(B), when the upper cover 19 has light transmission, no hole may be provided on the upper surface of the upper cover 19 . This is because if the upper cover 19 is light-transmitting, even if the upper cover 19 is in a closed state, the user can still confirm the displayed content of the display 5 . When the upper cover 19 does not have light transmission, as shown in FIG. 2(A), a hole or even a window may be provided on the upper surface of the upper cover 19 . The upper cover 19 functions as a dust cover. As shown in FIG. 2(A) and FIG. 2(B), a plurality of photoelectric switches 1 are also called serial sensors because they can be connected horizontally.
圖3係光電開關1之***圖。可在上罩19之後端側設置有裝飾構件20。在上罩19之後端側設置有轉動銷19a。轉動銷19a嵌合於在上外殼3之後端側設置之保持孔19b。藉此，上罩19可轉動地連結於上外殼3。為了即便上罩19為關閉之狀態使用者仍可確認顯示在顯示器5之資訊，而上罩19可由透明構件形成。在上外殼3之中央附近設置有用於支持顯示器5之脊骨構件36。在脊骨構件36之左右設置有四個邊緣部47。四個邊緣部47係自上外殼3朝上方突出之突出部，將顯示器5在短邊方向(x方向)定位。此外，四個邊緣部47與罩構件4之凹部嵌合。又，在脊骨構件36之左右設置有二個爪部48。爪部48與設置於罩構件之中央腳之內側之凹部嵌合，將罩構件4固定於上外殼3。凹部可為槽，亦可為貫通孔。在以脊骨構件36為中心之顯示器搭載部之後端側設置有開口部25。開口部25係用於使信號纜線自上外殼3之外面朝內面側通過的貫通孔或缺口。信號纜線包含對顯示器5供給電力之電源線及供給控制信號之控制線。信號纜線連接於控制基板30。此處控制基板30可為一個基板。若在x軸方向設置二個基板，則光電開關1之x軸方向之長度變長。因而，在本實施例中，在x軸方向僅設置有一個控制基板30。在控制基板30搭載有CPU(中央運算處理裝置)等之控制器6。控制器6使顯示器5顯示臨限值與受光量。在上外殼3設置有調整按鈕9、模式按鈕7、主動接收器按鈕8、滑動開關10及設置按鈕11，在控制基板30安裝有與其等對應之開關。該等按鈕可由POM(聚縮醛)等之樹脂形成。此外，上罩19、罩構件4、及殼體原則上而言可由聚碳酸酯形成。又，對顯示燈24之光擴散構件供給光之LED(發光二極體)亦安裝於控制基板30。在控制基板30設置有用於與相鄰之其他之光電開關1通訊或接收電力的連接器16a。在控制基板30之正面側設置有元件保持具26，且安裝有發光元件模組32與受光元件模組33。在元件保持具26具有自孔12***之投光光纖22用之孔、及自孔13***之受光光纖23用之孔。在元件保持具26之正面側配置有夾持模組14，而保持投光光纖22與受光光纖23。在下外殼2之底面安裝有用於固定於DIN軌道18之固定具28、及金屬罩29。金屬罩29可發揮散熱與電磁屏蔽之作用。FIG. 3 is an exploded view of the photoelectric switch 1 . A decoration member 20 may be provided on the rear end side of the upper cover 19 . On the rear end side of the upper cover 19, a rotation pin 19a is provided. The rotation pin 19 a is fitted into a holding hole 19 b provided on the rear end side of the upper housing 3 . Thereby, the upper cover 19 is rotatably connected to the upper case 3 . In order that the user can confirm the information displayed on the display 5 even when the upper cover 19 is closed, the upper cover 19 may be formed of a transparent member. Near the center of the upper case 3 is provided a spine member 36 for supporting the display 5 . Four edge portions 47 are provided on the left and right of the spine member 36 . The four edge portions 47 are protrusions protruding upward from the upper case 3, and position the display 5 in the short side direction (x direction). In addition, the four edge portions 47 are fitted into the concave portions of the cover member 4 . Also, two claws 48 are provided on the left and right of the spine member 36 . The claw portion 48 fits into a recess provided on the inner side of the central leg of the cover member to fix the cover member 4 to the upper case 3 . The concave portion may be a groove or a through hole. An opening 25 is provided on the rear end side of the display mounting portion centered on the spine member 36 . The opening 25 is a through hole or a notch for passing the signal cable from the outer surface to the inner surface side of the upper case 3 . The signal cable includes a power line for supplying power to the display 5 and a control line for supplying control signals. The signal cables are connected to the control board 30 . Here, the control substrate 30 may be one substrate. If two substrates are arranged in the x-axis direction, the length of the photoelectric switch 1 in the x-axis direction becomes longer. Therefore, in the present embodiment, only one control substrate 30 is provided in the x-axis direction. A controller 6 such as a CPU (Central Processing Unit) is mounted on the control board 30 . The controller 6 makes the display 5 display the threshold value and the received light amount. The upper case 3 is provided with an adjustment button 9 , a mode button 7 , an active receiver button 8 , a slide switch 10 and a setting button 11 , and the corresponding switches are installed on the control board 30 . These buttons may be formed of resin such as POM (polyacetal). In addition, the upper cover 19, the cover member 4, and the case can be formed of polycarbonate in principle. In addition, LEDs (Light Emitting Diodes) that supply light to the light diffusing members of the display lamps 24 are also mounted on the control board 30 . The control board 30 is provided with a connector 16 a for communicating with other adjacent photoelectric switches 1 or receiving power. The element holder 26 is provided on the front side of the control board 30, and the light emitting element module 32 and the light receiving element module 33 are installed. The element holder 26 has a hole for the projecting optical fiber 22 inserted through the hole 12 and a hole for the receiving optical fiber 23 inserted through the hole 13 . The clamping module 14 is disposed on the front side of the component holder 26 to hold the projecting optical fiber 22 and the receiving optical fiber 23 . A fixture 28 for fixing to the DIN rail 18 and a metal cover 29 are installed on the bottom surface of the lower case 2 . The metal cover 29 can play the role of heat dissipation and electromagnetic shielding.
圖4(A)係將罩構件4固定於上外殼3之狀態之光電開關1之立體圖。圖4(B)係未將罩構件4固定於上外殼3之狀態之光電開關1之立體圖。此處，各種按鈕及顯示器5相對於上外殼3被固定，再者控制基板30亦相對於上外殼3被固定。電性連接顯示器5與控制基板30之信號纜線51通過開口部25進入殼體內部，且連接於控制基板30之連接器。在控制基板30之左側面設置有連接器16b。光電開關1之連接器16b係母連接器，與位於光電開關1之左鄰之另一光電開關1之公連接器16a嵌合且電性連接。FIG. 4(A) is a perspective view of the photoelectric switch 1 in a state where the cover member 4 is fixed to the upper case 3 . FIG. 4(B) is a perspective view of the photoelectric switch 1 in a state where the cover member 4 is not fixed to the upper case 3 . Here, various buttons and the display 5 are fixed relative to the upper case 3 , and the control board 30 is also fixed relative to the upper case 3 . The signal cable 51 electrically connecting the display 5 and the control board 30 enters the housing through the opening 25 and is connected to the connector of the control board 30 . A connector 16 b is provided on the left side of the control board 30 . The connector 16b of the photoelectric switch 1 is a female connector, which is fitted and electrically connected with the male connector 16a of another photoelectric switch 1 located on the left side of the photoelectric switch 1 .
此外，由圖4(A)等可知，主動接收器按鈕8之高度低於模式按鈕7及調整按鈕9之高度。此係由於防止主動接收器按鈕8之誤操作之故。In addition, it can be seen from FIG. 4(A) etc. that the height of the active receiver button 8 is lower than that of the mode button 7 and the adjustment button 9 . This is in order to prevent misoperation of the active receiver button 8 .
圖5係用於詳細地說明罩構件4之立體圖。罩構件4具有二個前腳42、二個中央腳43、及二個後腳44。在罩構件4之上表面設置有窗部40。使用者可經由窗部40觀察顯示器5之顯示面。窗部40係由四個邊框包圍。左邊框41a及右邊框41b與前邊框41d及後邊框41c相比為細。此係由於確保光電開關1之短邊方向之顯示面積之故。後邊框41c與其他之邊框相比面積更大。此係由於後邊框41c保護控制顯示器5之IC等之故。可在後邊框41c印刷文字資訊等。又，由於後邊框41c具有某一程度之面積，故即便使用者以手指按壓調整按鈕9，顯示器5之顯示資訊亦不易被手指遮擋。即，後邊框41c可將顯示器5與按鈕之距離充分地隔開。此外，由於在前邊框41d之面積為小，故可使顯示燈24與顯示器5接近。藉此，可將受使用者關注之資訊傳遞機構彙集在一處。在罩構件4之右側面與左側面合計設置有四個缺口46。四個缺口46嵌合於在上外殼3設置之四個邊緣部47，將罩構件4相對於上外殼3定位且固定。在二個中央腳43之內面側分別設置有凹部45。凹部45嵌合於在上外殼3之右側面與左側面分別設置之爪部48。為了保護顯示器5之正面、底面、左側面、及右側面而可採用屏蔽構件50。屏蔽構件50具有：保護顯示器5之正面之前壁50d、保護顯示器5之底面之底部50a、保護顯示器5之右側面之右壁50b、及保護顯示器5之左側面之左壁50c。顯示器5在由屏蔽構件50覆蓋之狀態下由脊骨構件36及罩構件4夾持。屏蔽構件50可由FPC(撓性印刷電路基板)形成。FIG. 5 is a perspective view for explaining the cover member 4 in detail. The cover member 4 has two front legs 42 , two central legs 43 , and two rear legs 44 . A window portion 40 is provided on the upper surface of the cover member 4 . The user can observe the display surface of the display 5 through the window portion 40 . The window portion 40 is surrounded by four frames. The left frame 41a and the right frame 41b are thinner than the front frame 41d and the rear frame 41c. This is because the display area in the short side direction of the photoelectric switch 1 is ensured. The rear frame 41c has a larger area than other frames. This is because the rear bezel 41c protects and controls the IC of the display 5 and the like. Text information and the like can be printed on the rear frame 41c. Moreover, since the rear frame 41c has a certain area, even if the user presses the adjustment button 9 with his fingers, the information displayed on the display 5 is not easily blocked by his fingers. That is, the rear bezel 41c can sufficiently separate the distance between the display 5 and the buttons. In addition, since the area of the front frame 41d is small, the display lamp 24 can be brought close to the display 5 . In this way, the information delivery organizations concerned by users can be gathered in one place. A total of four notches 46 are provided on the right side and the left side of the cover member 4 . The four notches 46 fit into the four edge portions 47 provided on the upper case 3 to position and fix the cover member 4 relative to the upper case 3 . Recesses 45 are respectively provided on the inner surfaces of the two central legs 43 . The concave portion 45 is fitted into the claw portion 48 respectively provided on the right side and the left side of the upper case 3 . In order to protect the front, bottom, left, and right sides of the display 5, a shielding member 50 may be employed. The shielding member 50 has a front wall 50d protecting the front of the display 5, a bottom 50a protecting the bottom of the display 5, a right wall 50b protecting the right side of the display 5, and a left wall 50c protecting the left side of the display 5. The display 5 is sandwiched by the backbone member 36 and the cover member 4 in a state covered by the shield member 50 . The shield member 50 may be formed of FPC (Flexible Printed Circuit Board).
圖6(A)係顯示光電開關1之上表面之平面圖。如圖6(A)所示，在顯示器5之短邊方向未設置開關或按鈕。因而，可充分地增大顯示器5之短邊方向之尺寸。此外，罩構件4之後邊框具有可印刷文字等之程度之面積。FIG. 6(A) is a plan view showing the upper surface of the photoelectric switch 1 . As shown in FIG. 6(A), no switches or buttons are provided in the direction of the short side of the display 5 . Therefore, the size of the display 5 in the short-side direction can be sufficiently increased. In addition, the rear frame of the cover member 4 has an area such that letters and the like can be printed.
圖6(B)顯示上外殼3之左側面。圖6(C)顯示安裝有控制基板30之上外殼3之左側面。自顯示器5延伸之信號纜線51之端子52連接於安裝於控制基板30之連接器16c且被固定。信號纜線51由於自殼體之外部進入內部且連接於控制基板30，故由較薄且具有柔軟性之FPC纜線等形成。FIG. 6(B) shows the left side of the upper case 3 . FIG. 6(C) shows the left side of the housing 3 on which the control substrate 30 is installed. The terminal 52 of the signal cable 51 extended from the display 5 is connected to the connector 16c mounted on the control board 30, and is fixed. The signal cable 51 is formed of a thin and flexible FPC cable or the like because it enters the inside from the outside of the housing and is connected to the control board 30 .
圖6(D)顯示安裝有下外殼2之狀態之光電開關1。在下外殼2之左側面設置有固定孔63a、63b。在光電開關1之固定孔63a、63b中分別***位於左鄰之另一光電開關1之連結部17a、17b。此外，在下外殼2之左側面設置有供連接器16b露出之孔，在圖6(D)中蓋64保護孔。FIG. 6(D) shows the photoelectric switch 1 with the lower case 2 installed. Fixing holes 63 a, 63 b are provided on the left side of the lower case 2 . In the fixing holes 63a, 63b of the photoelectric switch 1, the connecting parts 17a, 17b of another photoelectric switch 1 located on the left are respectively inserted. In addition, a hole for exposing the connector 16b is provided on the left side of the lower case 2, and a cover 64 protects the hole in FIG. 6(D).
＜信號纜線對顯示器之配置＞ 圖7(A)顯示顯示器5之右側面剖視圖。顯示器5係透明構件70、OLED層71、及透明基材72在高度方向積層而形成。透明構件70與透明基材72之素材係包含玻璃或樹脂等之透明基板(第二基板)。自OLED層71之長邊延伸之透明電極、及自短邊延伸之透明電極形成於透明構件70之底面，且電性連接於驅動IC 54。驅動IC 54係驅動顯示器5之積體電路。驅動IC 54在透明構件70之底面係由接著劑73保護。在驅動IC 54之端子電性連接有自控制基板30延伸之信號纜線51。如此，在顯示器5之長邊方向之端部、即設置於顯示器5之短邊側之端子(連接部70a)連接有信號纜線51。其容易確保顯示器5之短邊方向之顯示面積。在工件之製造、檢查現場中將複數個光電開關1連結而予以利用。因而，光電開關1之短邊方向之長度例如設為5 mm以上且14 mm以下。假若在顯示器5之短邊方向安裝有驅動IC 54及信號纜線51，則顯示器5之顯示區域縮窄。即，難以讀取顯示在顯示器5之文字。因而，較佳為，在顯示器5之短邊方向之端部(長邊側)不安裝驅動IC 54或信號纜線51。<Arrangement of Signal Cables to Display> FIG. 7(A) shows a sectional view of the right side of the display 5 . The display 5 is formed by laminating a transparent member 70 , an OLED layer 71 , and a transparent substrate 72 in the height direction. The material of the transparent member 70 and the transparent base material 72 is a transparent substrate (second substrate) including glass or resin. The transparent electrodes extending from the long sides of the OLED layer 71 and the transparent electrodes extending from the short sides are formed on the bottom surface of the transparent member 70 and are electrically connected to the driving IC 54 . The driving IC 54 is an integrated circuit for driving the display 5 . The driver IC 54 is protected by an adhesive 73 on the bottom surface of the transparent member 70 . The signal cable 51 extending from the control board 30 is electrically connected to the terminal of the driving IC 54 . In this way, the signal cable 51 is connected to the terminal (connection portion 70 a ) provided on the short side of the display 5 at the end in the longitudinal direction of the display 5 . It is easy to secure a display area in the short side direction of the display 5 . It is used by linking a plurality of photoelectric switches 1 in the manufacturing and inspection sites of workpieces. Therefore, the length in the short-side direction of the photoelectric switch 1 is set to be, for example, not less than 5 mm and not more than 14 mm. If the driver IC 54 and the signal cable 51 are installed in the short side direction of the display 5, the display area of the display 5 is narrowed. That is, it is difficult to read the characters displayed on the display 5 . Therefore, it is preferable not to mount the driver IC 54 or the signal cable 51 on the short-side end (long side) of the display 5 .
圖7(B)顯示在信號纜線51之中途設置有驅動IC 54。其可有助於縮短透明構件70之長邊方向之長度。自OLED層71之長邊延伸之透明電極作為設置於顯示器5之短邊側之端子(連接部70a)連接於信號纜線51。FIG. 7(B) shows that the driver IC 54 is provided in the middle of the signal cable 51 . This can help to shorten the length of the transparent member 70 in the longitudinal direction. The transparent electrode extending from the long side of the OLED layer 71 is connected to the signal cable 51 as a terminal (connection portion 70 a ) provided on the short side of the display 5 .
圖7(C)採用上外殼3之脊骨構件36作為基材取代透明基材72。其有助於減薄顯示器5。即，有助於降低顯示器5之高度。在脊骨構件36設置有開口部25，信號纜線51通過開口部25進入殼體之內部。驅動IC 54配置為在信號纜線51之中途且位於殼體之內部。此外，自OLED層71之長邊延伸且設置於透明構件70之透明電極作為設置於顯示器5之短邊側之端子(連接部70a)連接於信號纜線51。FIG. 7(C) adopts the spine member 36 of the upper case 3 as the base material instead of the transparent base material 72 . It contributes to thinning the display 5 . That is, it contributes to reducing the height of the display 5 . An opening 25 is provided in the spine member 36 , and the signal cable 51 enters the inside of the housing through the opening 25 . The driver IC 54 is disposed in the middle of the signal cable 51 and inside the casing. Further, the transparent electrode extending from the long side of the OLED layer 71 and provided on the transparent member 70 is connected to the signal cable 51 as a terminal (connection portion 70 a ) provided on the short side of the display 5 .
如此，顯示器5具有作為顯示層而發揮功能之OLED層71、及透明構件70。透明電極作為自OLED層71朝向信號纜線51之信號線而發揮功能。透明電極設置於OLED層71與透明構件70之界面附近。罩構件4覆蓋OLED層71與透明構件70之界面附近之側面。由於該界面附近容易破損，故罩構件4保護界面附近。Thus, the display 5 has the OLED layer 71 functioning as a display layer, and the transparent member 70 . The transparent electrode functions as a signal line extending from the OLED layer 71 to the signal cable 51 . The transparent electrode is disposed near the interface between the OLED layer 71 and the transparent member 70 . The cover member 4 covers the side surfaces near the interface between the OLED layer 71 and the transparent member 70 . Since the vicinity of the interface is easily damaged, the cover member 4 protects the vicinity of the interface.
＜纜線通過部之配置＞ 圖8(A)顯示上外殼3之概略剖視圖。圖8(B)至圖8(E)顯示顯示器搭載部之立體圖。上外殼3包含：供配置設置按鈕11之第一上表面38、第二上表面(前壁37)、第三上表面(脊骨構件36)、第四上表面(後壁35)、及供配置調整按鈕9等之第六上表面34等。此外，亦可將第一上表面38及第六上表面34稱為上段，將脊骨構件36稱為下段。如此，上外殼3之上表面可具有階差。可將脊骨構件36稱為載置部。基於提高剛性之觀點，載置部可為實心。如圖8(A)所示，在沿殼體之長邊方向之剖面中，第二上表面(前壁37)、第三上表面(脊骨構件36)、及第四上表面(後壁35)形成凹部。顯示器5被壓抵於形成凹部之二個壁面中靠近第二面之側的壁面(前壁37)。根據圖8(A)及圖8(B)，開口部25係設置於脊骨構件36之後端側之狹槽狀之孔。這表示開口部25亦可設置於脊骨構件36之前端側。根據圖8(C)，開口部25設置於後壁35之下側。這表示開口部25可設置於前壁37之下側。亦可在脊骨構件36與後壁35(前壁37)之連結部設置開口部25。即，可跨於脊骨構件36與後壁35(前壁37)形成狹槽。圖8(D)顯示在脊骨構件36之中央設置有開口部25。此處，開口部25之面積基本上小於顯示器5之底面積。此係由於藉由脊骨構件36支持顯示器5之底面之故。惟，顯示器5之底面只要由在脊骨構件36之長邊方向延伸之二個長邊框、或在脊骨構件36之短邊方向延伸之二個短邊框之任一者支持即足夠。圖8(E)顯示在脊骨構件36之右側設置有缺口狀之開口部25。這表示亦可在脊骨構件36之左側設置缺口狀之開口部25。若信號纜線51為如FPC纜線之類柔軟性高且可彎折之纜線，則可提高開口部25之配置之自由度。此外，圖8(E)之情況可主要為在顯示器5之長邊側連接信號纜線51之情況。然而，若信號纜線51為FPC纜線，則藉由將自顯示器5之短邊側延伸之信號纜線51彎折，亦可使其通過圖8(E)所示之缺口狀之開口部25。<Arrangement of Cable Passing Portions> FIG. 8(A) shows a schematic sectional view of the upper case 3 . 8(B) to 8(E) show perspective views of the display mounting portion. The upper shell 3 comprises: the first upper surface 38, the second upper surface (front wall 37), the third upper surface (spine member 36), the fourth upper surface (rear wall 35) and the upper surface for configuring the button 11. The sixth upper surface 34 etc. of the adjustment buttons 9 etc. are arranged. In addition, the first upper surface 38 and the sixth upper surface 34 may also be referred to as an upper section, and the spine member 36 may also be referred to as a lower section. In this way, the upper surface of the upper casing 3 may have a step difference. The spine member 36 may be referred to as a placement portion. From the viewpoint of increasing rigidity, the mounting portion may be solid. As shown in Figure 8 (A), in the section along the longitudinal direction of the casing, the second upper surface (front wall 37), the third upper surface (spine member 36), and the fourth upper surface (rear wall 35) Form a recess. The display 5 is pressed against the wall surface (front wall 37 ) on the side closer to the second surface among the two wall surfaces forming the concave portion. According to FIG. 8(A) and FIG. 8(B), the opening 25 is a slot-shaped hole provided on the rear end side of the spine member 36 . This means that the opening 25 may also be provided on the front end side of the spine member 36 . According to FIG. 8(C), the opening 25 is provided on the lower side of the rear wall 35 . This means that the opening 25 can be provided on the lower side of the front wall 37 . The opening 25 may also be provided at the connecting portion between the spine member 36 and the rear wall 35 (front wall 37 ). That is, a slot may be formed across the spine member 36 and the posterior wall 35 (anterior wall 37). FIG. 8(D) shows that the opening 25 is provided in the center of the spine member 36 . Here, the area of the opening 25 is substantially smaller than the area of the bottom of the display 5 . This is due to the fact that the bottom surface of the display 5 is supported by the spine member 36 . However, it is sufficient that the bottom surface of the display 5 is supported by any one of the two long frames extending in the long side direction of the spine member 36 or the two short frames extending in the short side direction of the spine member 36 . FIG. 8(E) shows that a notch-shaped opening 25 is provided on the right side of the spine member 36 . This means that the notch-shaped opening 25 may also be provided on the left side of the spine member 36 . If the signal cable 51 is a highly flexible and bendable cable such as an FPC cable, the degree of freedom in the arrangement of the opening 25 can be increased. In addition, the case of FIG. 8(E) may be mainly the case where the signal cable 51 is connected to the long side of the display 5 . However, if the signal cable 51 is an FPC cable, the signal cable 51 extending from the short side of the display 5 can also be passed through the notch-shaped opening shown in FIG. 8(E) by bending the signal cable 51. 25.
圖9(A)顯示設置於脊骨構件36之後端部之開口部25。如圖9(A)所示，光電開關1之殼體為細長。又，若著眼於脊骨構件36，可知顯示器搭載部存在直至殼體之邊緣。此有助於擴大顯示器5之顯示面積。又，將開口部25設置於脊骨構件36之後端側，亦有助於擴大顯示器5之顯示面積。圖9(B)顯示為了通過開口部25而經彎折之信號纜線51。如此，信號纜線51自上外殼3之外部朝內部經由開口部25延伸。FIG. 9(A) shows the opening 25 provided at the rear end of the spine member 36 . As shown in FIG. 9(A), the housing of the photoelectric switch 1 is elongated. Also, if we focus on the backbone member 36, it can be seen that the display mounting portion exists up to the edge of the casing. This helps to expand the display area of the display 5 . Moreover, providing the opening 25 at the rear end side of the spine member 36 also contributes to enlarging the display area of the display 5 . FIG. 9(B) shows the signal cable 51 bent to pass through the opening 25 . In this way, the signal cable 51 extends from the outside of the upper case 3 toward the inside through the opening 25 .
＜信號纜線之屏蔽之一體化＞ 圖10顯示由FPC 60構成之信號纜線51。此處，包含顯示器5及驅動IC 54之顯示模組亦與信號纜線51一起圖示。此外，信號纜線51與屏蔽構件50藉由FPC 60而一體化。屏蔽構件50具有銅等之金屬層及基底膜層。藉由在折痕56c處將FPC 60折成直角而形成右壁50b。藉由在折痕56d處將FPC 60折成直角而形成左壁50c。藉由在折痕56e處將FPC 60折成直角而形成前壁50d。此外，為了易於摺疊FPC 60，而可在金屬層中沿折痕56c、56d、56e設置有複數個孔55。金屬層連接於信號纜線51之接地線。藉此屏蔽構件50可保護OLED(顯示器5)免受電氣雜訊之害。<Integration of Shielding of Signal Cable> FIG. 10 shows a signal cable 51 composed of FPC 60 . Here, the display module including the display 5 and the driver IC 54 is also shown together with the signal cable 51 . In addition, the signal cable 51 and the shield member 50 are integrated by the FPC 60 . The shield member 50 has a metal layer such as copper and a base film layer. The right wall 50b is formed by folding the FPC 60 at a right angle at the crease 56c. The left wall 50c is formed by folding the FPC 60 at right angles at the crease 56d. The front wall 50d is formed by folding the FPC 60 at right angles at the crease 56e. In addition, in order to facilitate folding of the FPC 60, a plurality of holes 55 may be provided in the metal layer along the creases 56c, 56d, and 56e. The metal layer is connected to the ground wire of the signal cable 51 . Thereby, the shielding member 50 can protect the OLED (display 5) from electrical noise.
進而，藉由將FPC 60沿折痕56a進行谷折，而屏蔽構件50覆蓋顯示器5之底面。圖9(B)所示之信號纜線51中被彎折為U字之部分係將FPC 60中信號配線部53a與屏蔽配線部53b重合而形成。即，藉由沿折痕56a將FPC 60進行谷折而信號配線部53a與屏蔽配線部53b重疊。進而，若插通於開口部25，則信號配線部53a與屏蔽配線部53b重合之部分被彎折為U字。進而，藉由在折痕56b處將FPC 60彎成直角，而端子52之安裝面與控制基板30成為平行。Furthermore, the shielding member 50 covers the bottom surface of the display 5 by valley-folding the FPC 60 along the crease 56a. The U-shaped portion of the signal cable 51 shown in FIG. 9(B) is formed by overlapping the signal wiring portion 53a and the shielding wiring portion 53b of the FPC 60 . That is, the signal wiring part 53a and the shield wiring part 53b overlap by valley-folding the FPC 60 along the crease 56a. Furthermore, when it is inserted into the opening part 25, the overlapped part of the signal wiring part 53a and the shield wiring part 53b is bent in U shape. Furthermore, by bending the FPC 60 at a right angle at the crease 56b, the mounting surface of the terminal 52 and the control board 30 become parallel.
圖11(A)至圖11(E)顯示顯示器5與信號纜線51之位置關係。圖11(A)係連接有信號纜線51之顯示器5之平面圖。圖11(B)係顯示顯示器5之左側面之圖。自顯示器5之後端側延伸之信號纜線51在信號配線部53a與屏蔽配線部53b重合而形成之重合部53被彎折為U字。進而，藉由在折痕56b處將信號纜線51彎成直角，而端子52之安裝面與控制基板30成為平行。圖11(C)至圖11(E)係顯示器5之立體圖。端子52之安裝面與控制基板30成為平行，但與顯示器5之底面正交。11(A) to 11(E) show the positional relationship between the display 5 and the signal cable 51 . FIG. 11(A) is a plan view of the display 5 to which the signal cable 51 is connected. FIG. 11(B) is a diagram showing the left side of the display 5 . The signal cable 51 extending from the rear end side of the display 5 is bent into a U-shape at the overlapping portion 53 formed by overlapping the signal wiring portion 53a and the shielding wiring portion 53b. Furthermore, by bending the signal cable 51 at a right angle at the crease 56b, the mounting surface of the terminal 52 and the control board 30 become parallel. 11(C) to 11(E) are perspective views of the display 5. The mounting surface of the terminal 52 is parallel to the control board 30 and perpendicular to the bottom surface of the display 5 .
端子52例如可由8個引腳構成。VCC引腳係將電力供給至驅動IC 54之引腳。VSS引腳係接地(提供接地電位)之引腳。RES引腳係對驅動IC 54供給用於啟動或再啟動驅動IC 54之重置信號的引腳。SCLK引腳係供給串列通訊用之時脈之引腳。SDA引腳係用於傳送串列通訊用之資料之引腳。IREF引腳係用於調整在OLED層71中流動之電流之引腳。VCOMH引腳係為了使驅動IC 54之內部電源穩定化而用於連接外置電容器與驅動IC 54的引腳。VDD引腳係供給驅動IC 54之邏輯動作用之電壓之引腳。The terminal 52 can be composed of, for example, eight pins. The VCC pin is a pin that supplies power to the driver IC 54 . The VSS pin is a ground (provides ground potential) pin. The RES pin is a pin for supplying a reset signal for starting or restarting the driving IC 54 to the driving IC 54 . The SCLK pin is the pin that supplies the clock pulse for serial communication. The SDA pin is a pin used to transmit data for serial communication. The IREF pin is a pin for adjusting the current flowing in the OLED layer 71 . The VCOMH pin is a pin for connecting an external capacitor to the drive IC 54 in order to stabilize the internal power supply of the drive IC 54 . The VDD pin is a pin for supplying a voltage for logic operation of the driver IC 54 .
此外，屏蔽構件50可為由與信號纜線51不同之構件構成之屏蔽片材。In addition, the shielding member 50 may be a shielding sheet composed of a member different from the signal cable 51 .
＜屏蔽＞ 圖12(A)係以圖6(D)之A-A切斷線切斷光電開關1而獲得之A-A剖視圖。圖12(B)係以圖6(D)之B-B切斷線切斷光電開關1而獲得之B-B剖視圖。圖13係將圖12(A)之一部分放大顯示之放大圖。如圖12(A)及圖13所示，上外殼3之爪部48嵌合於在罩構件4之左右之中央腳43設置之凹部45。如圖12(A)、圖12(B)及圖13所示，屏蔽構件50之右壁50b之高度與左壁50c之高度係如分別覆蓋顯示器5之OLED層71與透明基材72且覆蓋透明構件70之至少一部分的高度。透明構件70與透明基材72係玻璃等。玻璃與樹脂相比容易破裂。因而，屏蔽構件50保護透明構件70與透明基材72免受衝擊等之害。又，針對OLED層71亦由屏蔽構件50進一步保護以免受電氣雜訊之害。顯示器5之底面係由屏蔽構件50之底部50a覆蓋。脊骨構件36不易將自控制基板30產生之熱傳遞至顯示器5。<Shielding> Fig. 12(A) is an A-A sectional view obtained by cutting the photoelectric switch 1 along the A-A cutting line in Fig. 6(D). Fig. 12(B) is a B-B sectional view obtained by cutting off the photoelectric switch 1 with the B-B cutting line in Fig. 6(D). Fig. 13 is an enlarged view showing a part of Fig. 12(A) enlarged. As shown in FIG. 12(A) and FIG. 13 , the claws 48 of the upper housing 3 are fitted into the recesses 45 provided on the left and right center legs 43 of the cover member 4 . As shown in Fig. 12 (A), Fig. 12 (B) and Fig. 13, the height of the right wall 50b of the shielding member 50 and the height of the left wall 50c are as respectively covering the OLED layer 71 and the transparent substrate 72 of the display 5 and covering The height of at least a part of the transparent member 70 . The transparent member 70 and the transparent substrate 72 are made of glass or the like. Glass is easier to break than resin. Thus, the shield member 50 protects the transparent member 70 and the transparent base material 72 from impact and the like. In addition, the shielding member 50 further protects the OLED layer 71 from electrical noise. The bottom surface of the display 5 is covered by the bottom 50 a of the shielding member 50 . The spine member 36 does not easily transfer heat generated from the control substrate 30 to the display 5 .
如圖12(B)所示，罩構件4之左右之前腳42之前端部係由下外殼2及上外殼3夾持。藉此，罩構件4被穩固地固定於殼體。As shown in FIG. 12(B), the front ends of the left and right front legs 42 of the cover member 4 are clamped by the lower case 2 and the upper case 3 . Thereby, the cover member 4 is firmly fixed to the housing.
＜光軸對準＞ ●透過型 圖14(A)係說明針對透過型光電開關(光纖感測器)之光軸調整之圖。在透過型光纖感測器中，投光光纖22與受光光纖23配置為對向。投光光纖22朝向檢測區域80投射光。當在檢測區域80不存在工件81時，自投光光纖22之出射端射出之光入射至受光光纖23之入射端。當在檢測區域80存在工件81時，由於自投光光纖22之出射端射出之光由工件81遮光而光不會入射至受光光纖23之入射端。控制器6根據光是否入射至受光光纖23而檢測有無工件81。<Optical Axis Alignment> ●Transmissive Type Figure 14(A) is a diagram illustrating the optical axis adjustment for a transmissive photoelectric switch (optical fiber sensor). In the transmission type optical fiber sensor, the light-emitting optical fiber 22 and the light-receiving optical fiber 23 are arranged to face each other. The light projecting fiber 22 projects light toward the detection region 80 . When there is no workpiece 81 in the detection area 80 , the light emitted from the output end of the light-emitting optical fiber 22 enters the incident end of the light-receiving optical fiber 23 . When there is a workpiece 81 in the detection area 80 , the light emitted from the output end of the projecting optical fiber 22 is blocked by the workpiece 81 and the light will not enter the incident end of the light receiving optical fiber 23 . The controller 6 detects the presence or absence of the workpiece 81 based on whether or not light is incident on the light-receiving optical fiber 23 .
●反射型 圖14(B)係說明針對反射型光電開關(光纖感測器)之光軸調整之圖。在反射型光纖感測器中，以自投光光纖22輸出之光由工件81反射，且反射光入射至受光光纖23之方式調整投光光纖22之光軸與受光光纖23之光軸。當在檢測區域80不存在工件81時，自投光光纖22之出射端射出之光不會入射至受光光纖23之入射端。當在檢測區域80存在工件81時，自投光光纖22之出射端射出之光由工件81反射，且反射光入射至受光光纖23之入射端。控制器6根據光是否入射至受光光纖23而檢測有無工件81。●Reflective type Figure 14(B) is a diagram illustrating the adjustment of the optical axis for a reflective photoelectric switch (optical fiber sensor). In the reflective optical fiber sensor, the optical axis of the projecting fiber 22 and the optical axis of the light receiving fiber 23 are adjusted so that the light output from the projecting fiber 22 is reflected by the workpiece 81 and the reflected light enters the light receiving fiber 23 . When there is no workpiece 81 in the detection area 80 , the light emitted from the output end of the light-emitting optical fiber 22 will not enter the incident end of the light-receiving optical fiber 23 . When the workpiece 81 exists in the detection area 80 , the light emitted from the output end of the light emitting fiber 22 is reflected by the workpiece 81 , and the reflected light enters the input end of the light receiving optical fiber 23 . The controller 6 detects the presence or absence of the workpiece 81 based on whether or not light is incident on the light-receiving optical fiber 23 .
●迴歸反射型 圖14(C)係說明針對迴歸反射型光電開關(光纖感測器)之光軸調整之圖。在迴歸反射型光纖感測器中，以自投光光纖22輸出之光由反射器83反射，且反射光入射至受光光纖23之方式調整投光光纖22之光軸與受光光纖23之光軸。當在檢測區域80不存在工件81時，自投光光纖22之出射端射出之光由反射器83反射而入射至受光光纖23之入射端。當在檢測區域80存在工件81時，由於自投光光纖22之出射端射出之光由工件81遮光，故反射光不會入射至受光光纖23之入射端。控制器6根據光是否入射至受光光纖23而檢測有無工件81。●Retro-reflective type Figure 14(C) is a diagram illustrating optical axis adjustment for a retro-reflective photoelectric switch (optical fiber sensor). In the retro-reflective optical fiber sensor, the light output from the projecting fiber 22 is reflected by the reflector 83, and the reflected light enters the light-receiving fiber 23 to adjust the optical axis of the projecting fiber 22 and the optical axis of the light-receiving fiber 23 . When there is no workpiece 81 in the detection area 80 , the light emitted from the output end of the light-emitting optical fiber 22 is reflected by the reflector 83 and enters the input end of the light-receiving optical fiber 23 . When the workpiece 81 exists in the detection area 80 , the reflected light will not enter the incident end of the light-receiving fiber 23 because the light emitted from the output end of the projecting fiber 22 is blocked by the workpiece 81 . The controller 6 detects the presence or absence of the workpiece 81 based on whether or not light is incident on the light-receiving optical fiber 23 .
●光軸調整之困難性 光纖之直徑為數mm，但有自投光光纖22之出射端至受光光纖23之入射端之距離達到數m之情形。因而，將投光光纖22之光軸與受光光纖23之光軸對準之作業並不簡單。有在光電開關1之本體設置有顯示燈24，但自光電開關1之本體至投光光纖22之出射端或至受光光纖23之入射端之距離為相距數m，而有使用者難以確認顯示燈24之點亮/熄滅或顯示器5之顯示內容之情形。● Difficulty in adjusting the optical axis The diameter of the optical fiber is several mm, but the distance from the output end of the projecting optical fiber 22 to the incident end of the receiving optical fiber 23 may reach several meters. Therefore, it is not easy to align the optical axis of the projecting optical fiber 22 with the optical axis of the receiving optical fiber 23 . There is a display light 24 on the body of the photoelectric switch 1, but the distance from the body of the photoelectric switch 1 to the exit end of the light-emitting fiber 22 or to the incident end of the light-receiving fiber 23 is several meters away, and some users find it difficult to confirm the display. The lighting/extinguishing of the lamp 24 or the display content of the display 5.
因而，本發明藉由自受光光纖23之入射端輸出輔助光軸調整之輔助光，而減輕執行光軸調整之使用者之負擔。此可藉由在受光光纖23之前端設置顯示燈而解決。此外，輔助光之顏色(波長)可與自投光光纖22輸出之檢測光之顏色(波長)不同。藉此，使用者或許可容易地辨識輔助光。再者，本發明提供一種安裝於受光光纖23之入射端(輔助光之出射端)且使輔助光擴散之擴散構件(透光構件)。Therefore, the present invention reduces the burden on the user who performs the optical axis adjustment by outputting the auxiliary light for assisting the optical axis adjustment from the incident end of the light-receiving optical fiber 23 . This can be solved by setting a display light at the front end of the light-receiving optical fiber 23 . In addition, the color (wavelength) of the auxiliary light may be different from the color (wavelength) of the detection light output from the projecting optical fiber 22 . Thereby, the user may easily recognize the auxiliary light. Furthermore, the present invention provides a diffusing member (light-transmitting member) installed on the incident end of the light-receiving optical fiber 23 (exiting end of the auxiliary light) to diffuse the auxiliary light.
●輔助光之擴散構件 圖15(A)係顯示透過型光纖感測器之投光光纖22、及未安裝有擴散構件之受光光纖23之側視圖。圖15(B)係顯示受光光纖23之前端附近(光纖頭)之立體圖。圖15(C)係顯示自投光光纖22觀察受光光纖23時之受光光纖23之前端附近的圖。在受光光纖23之前端安裝有保持受光光纖23之光纖纜線之圓筒型之保持部85。在保持部85之更前端附近設置有透鏡附接部及擴散構件之安裝部86。光纖芯部87露出於安裝部86之端面。此外，可在安裝部86之周面切出用於螺合透鏡附接部及擴散構件之螺牙。如此，保持部85、安裝部86、及光纖芯部87形成光纖頭。如圖15(A)所示，投光光纖22與受光光纖23之外形可大致共通，受光光纖23亦可具有保持部85。●Diffusing member for auxiliary light Fig. 15(A) is a side view showing the projecting optical fiber 22 of the transmission optical fiber sensor and the receiving optical fiber 23 without the diffusing member. FIG. 15(B) is a perspective view showing the vicinity of the front end of the light-receiving optical fiber 23 (fiber head). FIG. 15(C) is a view showing the vicinity of the front end of the light-receiving fiber 23 when the light-receiving fiber 23 is viewed from the light-emitting fiber 22 . A cylindrical holder 85 for holding the optical fiber cable of the light-receiving fiber 23 is attached to the front end of the light-receiving fiber 23 . In the vicinity of the further front end of the holding portion 85, a lens attachment portion and a mounting portion 86 of a diffusion member are provided. The optical fiber core portion 87 is exposed on the end surface of the mounting portion 86 . In addition, threads for screwing the lens attachment portion and the diffusion member may be cut out on the peripheral surface of the mounting portion 86 . In this way, the holding portion 85, the mounting portion 86, and the optical fiber core portion 87 form an optical fiber head. As shown in FIG. 15(A), the projecting optical fiber 22 and the receiving optical fiber 23 may have substantially the same shape, and the receiving optical fiber 23 may also have a holding portion 85 .
圖16(A)係顯示透過型光纖感測器之投光光纖22、及安裝有擴散構件88之受光光纖23之側視圖。圖16(A)係顯示透過型光纖感測器之投光光纖22、及安裝有擴散構件88之受光光纖23之剖視圖。受光光纖23之纜線部84具有被覆，但前端附近之被覆被剝離，而光纖芯部87露出。光纖芯部87插通圓筒形狀之保持部85之內部。圖16(C)係顯示受光光纖23之前端附近之立體圖。圖16(C)係顯示自投光光纖22觀察受光光纖23時之受光光纖23之前端附近的圖。輔助光自光纖芯部87之端面以約60度之角度呈放射狀出射。因而，藉由在受光光纖23之前端安裝帽狀之擴散構件88，而自光纖芯部87之端面入射至擴散構件88之輔助光由擴散構件88擴散，而擴散構件88看似發光。即，擴散構件88作為顯示燈而發揮功能。例如，若輔助光之顏色為綠色，則擴散構件88以綠色發光。因而，使用者可容易地確認是否自受光光纖23發出輔助光。FIG. 16(A) is a side view showing the light-emitting optical fiber 22 of the transmission-type optical fiber sensor and the light-receiving optical fiber 23 equipped with a diffusion member 88 . FIG. 16(A) is a sectional view showing the projecting optical fiber 22 of the transmission-type optical fiber sensor and the receiving optical fiber 23 with the diffusion member 88 installed therein. The cable portion 84 of the light-receiving optical fiber 23 has a coating, but the coating near the tip is peeled off, and the fiber core 87 is exposed. The optical fiber core portion 87 is inserted into the cylindrical holding portion 85 . FIG. 16(C) is a perspective view showing the vicinity of the front end of the light-receiving optical fiber 23 . FIG. 16(C) is a view showing the vicinity of the front end of the light-receiving fiber 23 when the light-receiving fiber 23 is viewed from the light-emitting fiber 22 . The auxiliary light is radially emitted from the end face of the fiber core 87 at an angle of about 60 degrees. Therefore, by attaching the cap-shaped diffuser 88 to the front end of the light-receiving fiber 23, the auxiliary light incident on the diffuser 88 from the end surface of the fiber core 87 is diffused by the diffuser 88, and the diffuser 88 appears to emit light. That is, the diffusion member 88 functions as a display lamp. For example, if the color of the auxiliary light is green, the diffusion member 88 emits light in green. Therefore, the user can easily confirm whether or not auxiliary light is emitted from the light-receiving optical fiber 23 .
可考量若干個控制器6使輔助光點亮之時序。例如，控制器6可在光軸之調整開始時使輔助光閃爍，當受光光纖23之受光量超過特定值時使輔助光連續點亮。又，控制器6可在經由操作部執行特定點之操作時使輔助光點亮。其有助於確認受光光纖23之斷線或連接不良。控制器6在經由操作部指示輔助光之點亮時使輔助光點亮。若擴散構件88發光，則使用者可判斷出受光光纖23未斷線，亦未產生連接不良。另一方面，若擴散構件88未發光，則使用者可判斷出受光光纖23斷線或產生連接不良。控制器6可與光電開關1之電源導通/關斷連動地使輔助光點亮/熄滅。控制器6可與顯示燈24之點亮/熄滅連動地使輔助光點亮/熄滅。有光電開關1之本體與受光光纖23之前端相距較遠，位於受光光纖23之前端附近之使用者無法確認顯示燈24之點亮/熄滅之情形。此時，使用者藉由確認輔助光而可辨識顯示燈24之點亮/熄滅。The timing of several controllers 6 turning on the auxiliary light can be considered. For example, the controller 6 may blink the auxiliary light when the adjustment of the optical axis starts, and continuously turn on the auxiliary light when the amount of light received by the light-receiving fiber 23 exceeds a certain value. Also, the controller 6 may turn on the auxiliary light when an operation of a specific point is performed via the operation unit. It helps to confirm the disconnection or poor connection of the light-receiving optical fiber 23 . The controller 6 turns on the auxiliary light when instructing to turn on the auxiliary light through the operation unit. If the diffusion member 88 emits light, the user can judge that the light-receiving optical fiber 23 is not disconnected, and there is no connection failure. On the other hand, if the diffusion member 88 does not emit light, the user can judge that the light-receiving optical fiber 23 is disconnected or has poor connection. The controller 6 can turn on/off the auxiliary light in conjunction with the power on/off of the photoelectric switch 1 . The controller 6 can turn on/off the auxiliary light in conjunction with the turning on/off of the display lamp 24 . There is a distance between the body of the photoelectric switch 1 and the front end of the light-receiving optical fiber 23 , and users near the front end of the light-receiving optical fiber 23 cannot confirm the lighting/extinguishing of the indicator light 24 . At this time, the user can recognize ON/OFF of the indicator lamp 24 by confirming the auxiliary light.
由圖16(B)所示之擴散構件88之剖面可知，擴散構件88設為大致圓筒形。擴散構件88具有設置於受光光纖23之另一端側之筒狀構件88a。筒狀構件88a較安裝部86之端面更朝投光光纖22側延伸。此乃為了呈放射狀出射之輔助光容易侵入筒狀構件88a。在實心型擴散構件88中，可在筒狀構件88a之內側設置透明構件88b。在中空型擴散構件88中，可在筒狀構件88a之前端部設置蓋88c。在此種中空型擴散構件88中，在工廠內產生之灰塵可能侵入中空部分。因而，藉由設置蓋88c，而可防止灰塵之侵入。此外，在不產生大量灰塵之環境中可省略如上述之蓋88c。若省略蓋88c，則受光量增加。又，蓋88c可為透鏡。其可使所投射之光朝光纖芯部87集光。擴散構件88可為實心。即，可在中空部分填滿透光性構件或與擴散構件88相同之透明構件88b。基於減低受光量之減少之觀點，或許較佳的是透明構件88b為透明度高(衰減率小)之構件。又，若透明構件88b之折射率與光纖芯部87之芯之折射率為相同程度，則不會產生無用之反射，而或許減低受光量之減少。As can be seen from the cross section of the diffusion member 88 shown in FIG. 16(B), the diffusion member 88 is substantially cylindrical. The diffusion member 88 has a cylindrical member 88 a provided on the other end side of the light receiving optical fiber 23 . The cylindrical member 88 a extends further toward the projecting optical fiber 22 side than the end surface of the attachment portion 86 . This is to facilitate the intrusion of the auxiliary light emitted radially into the cylindrical member 88a. In the solid type diffusion member 88, a transparent member 88b may be provided inside the cylindrical member 88a. In the hollow diffuser member 88, a cover 88c may be provided at the front end of the cylindrical member 88a. In such a hollow type diffusion member 88, dust generated in a factory may intrude into the hollow portion. Therefore, the intrusion of dust can be prevented by providing the cover 88c. In addition, the cover 88c as described above can be omitted in an environment where a large amount of dust is not generated. If the cover 88c is omitted, the amount of received light increases. Also, the cover 88c may be a lens. This allows the projected light to be collected toward the fiber core 87 . Diffusion member 88 may be solid. That is, the hollow portion may be filled with a translucent member or a transparent member 88b similar to the diffusion member 88 . It may be preferable that the transparent member 88b be a member with high transparency (small attenuation rate) from the viewpoint of reducing the reduction in the amount of light received. Also, if the refractive index of the transparent member 88b is about the same as that of the core of the optical fiber core 87, unnecessary reflection will not occur, and the decrease in the amount of light received may be reduced.
●反射型光纖感測器用擴散構件 圖17(A)係反射型光纖感測器之光纖頭之側視圖。圖17(B)係反射型光纖感測器之B-B剖視圖。圖17(C)顯示未安裝有擴散構件88之狀態之光纖感測器之端面。圖17(D)係反射型光纖感測器之立體圖。保持部85一體地保持投光光纖22與受光光纖23。投光光纖22之光纖芯部87a與受光光纖23之光纖芯部87b插通於圓筒形狀之保持部85之內部，且延伸至保持部85之端面。在保持部85之前端部設置有安裝部86，螺合或嵌合有擴散構件88。如此，在保持部85之前端部，投光光纖22之光纖芯部87a與受光光纖23之光纖芯部87b相鄰。因而，擴散構件88以不覆蓋投光光纖22之光纖芯部87a，且覆蓋受光光纖23之光纖芯部87b之方式形成。如圖17(C)所示，為了抑制光自投光光纖22之光纖芯部87a傳遞至受光光纖23之光纖芯部87b，而可在投光光纖22之光纖芯部87a與受光光纖23之光纖芯部87b之間設置遮光板99。遮光板99只要係可遮光之構件即可。遮光板99例如為金屬製之板。金屬製之板與樹脂之板相比剛性更高。因而，容易將遮光板99打入光纖芯部87a與光纖芯部87b之間。●Diffusion member for reflective optical fiber sensor Fig. 17(A) is a side view of the optical fiber head of the reflective optical fiber sensor. Fig. 17(B) is a B-B sectional view of the reflective optical fiber sensor. FIG. 17(C) shows the end face of the optical fiber sensor in a state where the diffusion member 88 is not installed. Fig. 17(D) is a perspective view of a reflective optical fiber sensor. The holding portion 85 integrally holds the projecting optical fiber 22 and the light receiving optical fiber 23 . The optical fiber core 87 a of the projecting optical fiber 22 and the optical fiber core 87 b of the light receiving optical fiber 23 are inserted into the cylindrical holding portion 85 and extend to the end surface of the holding portion 85 . A mounting portion 86 is provided at a front end portion of the holding portion 85 , and a diffusion member 88 is screwed or fitted. In this way, at the front end of the holding portion 85 , the fiber core 87 a of the projecting fiber 22 is adjacent to the fiber core 87 b of the light receiving fiber 23 . Therefore, the diffusion member 88 is formed so as not to cover the fiber core portion 87 a of the light emitting fiber 22 but to cover the fiber core portion 87 b of the light receiving fiber 23 . As shown in FIG. 17(C), in order to prevent light from being transmitted from the fiber core 87a of the light-emitting fiber 22 to the fiber core 87b of the light-receiving fiber 23, the distance between the fiber core 87a of the projecting fiber 22 and the light-receiving fiber 23 can be A light shielding plate 99 is provided between the optical fiber cores 87b. The light-shielding plate 99 only needs to be a light-shielding member. The light shielding plate 99 is, for example, a metal plate. A metal plate is more rigid than a resin plate. Therefore, it is easy to drive the light shielding plate 99 between the optical fiber core 87a and the optical fiber core 87b.
圖18(A)顯示輸出輔助光之狀態。對擴散構件88賦予之陰影表現因輔助光而擴散構件88發光之狀況。投光光纖22之光纖芯部87a被設為陰影係表現自光纖芯部87a輸出檢測光。擴散構件88覆蓋受光光纖23之光纖芯部87b，且不覆蓋投光光纖22之光纖芯部87a。因而，檢測光不會被擴散構件88衰減。此外，如圖17(B)所示，檢測光之出射角為θ。θ為約60度。可以與該剖面扇型之空間不干涉之方式將擴散構件88倒角。圖18(B)顯示未輸出輔助光之狀態。由於輔助光未點亮，故擴散構件88不發光。Fig. 18(A) shows the state in which auxiliary light is output. The shadow given to the diffusion member 88 expresses the state in which the diffusion member 88 emits light due to the auxiliary light. The optical fiber core 87a of the projecting optical fiber 22 is shaded to represent that detection light is output from the optical fiber core 87a. The diffusion member 88 covers the fiber core 87b of the light receiving fiber 23 and does not cover the fiber core 87a of the light emitting fiber 22 . Thus, the detection light is not attenuated by the diffusion member 88 . In addition, as shown in FIG. 17(B), the emission angle of the detection light is θ. θ is about 60 degrees. The diffuser member 88 can be chamfered in a manner that does not interfere with the space of the cross-sectional sector. Fig. 18(B) shows a state where auxiliary light is not output. Since the auxiliary light is not turned on, the diffusion member 88 does not emit light.
作為反射型光纖感測器之擴散構件88可採用圖16(B)等所示之帽型擴散構件88。此時，檢測光被擴散構件88衰減兩次。惟，若自反射型光纖感測器至工件81或反射器83之距離充分短，則檢測光之衰減不會成為問題。又，若同時輸出紅色之檢測光與綠色之輔助光，則帽型擴散構件88應該以橙色發光。As the diffusion member 88 of the reflective optical fiber sensor, a hat-type diffusion member 88 shown in FIG. 16(B) and the like can be used. At this time, the detection light is attenuated twice by the diffusion member 88 . However, if the distance from the reflective fiber optic sensor to the workpiece 81 or the reflector 83 is sufficiently short, the attenuation of the detection light will not be a problem. Also, if the red detection light and the green auxiliary light are simultaneously output, the hat-shaped diffusion member 88 should emit orange light.
＜元件保持具＞ 圖19顯示安裝於元件保持具26之發光元件模組32與受光元件模組33。發光元件模組32具有：發出檢測光之第一發光元件91a、及用於監視第一發光元件91a之發光量之受光元件92a。自第一發光元件91a輸出之檢測光入射至投光光纖22之入射端，在投光光纖22之芯中傳遞，且自投光光纖22之出射端出射。控制器6根據受光元件92a之受光量控制在第一發光元件91a流動之驅動電流之量以成為與由模式按鈕7選擇之動作模式建立關聯之發光量。<Element Holder> FIG. 19 shows the light emitting element module 32 and the light receiving element module 33 mounted on the element holder 26 . The light emitting element module 32 has: a first light emitting element 91a emitting detection light, and a light receiving element 92a for monitoring the light emission amount of the first light emitting element 91a. The detection light output from the first light-emitting element 91a is incident on the incident end of the projecting fiber 22 , transmitted in the core of the projecting fiber 22 , and exits from the exiting end of the projecting fiber 22 . The controller 6 controls the amount of driving current flowing through the first light emitting element 91 a according to the amount of light received by the light receiving element 92 a so that the amount of light emitted is associated with the operation mode selected by the mode button 7 .
受光元件模組33具有：接收在受光光纖23中傳遞且自出射端出射之檢測光的受光元件92b、及輸出輔助光(顯示光)之第二發光元件91b。自第二發光元件91b輸出之輔助光自受光光纖23之出射端入射，在受光光纖23之芯中傳遞，且自受光光纖23之入射端出射。此外，受光光纖23之一端側係檢測光之出射端，且係輔助光之入射端。受光光纖23之另一端側係檢測光之入射端，且係輔助光之出射端。The light-receiving element module 33 has: a light-receiving element 92b that receives the detection light transmitted through the light-receiving fiber 23 and emitted from the output end, and a second light-emitting element 91b that outputs auxiliary light (display light). The auxiliary light output from the second light-emitting element 91 b is incident from the output end of the light-receiving fiber 23 , propagates in the core of the light-receiving fiber 23 , and exits from the incident end of the light-receiving fiber 23 . In addition, one end side of the light-receiving fiber 23 is the output end of the detection light, and is the incident end of the auxiliary light. The other end side of the light-receiving optical fiber 23 is the incident end of the detection light, and is the exit end of the auxiliary light.
＜總結＞ 如使用圖1等所說明般，光電開關1具有大致長方體形狀之殼體。即，殼體為細長。顯示器5係安裝於殼體之外表面且為第一面之顯示部之一例。先前由於顯示器被收容於光電開關之殼體內部，故自殼體之外表面至顯示器存在距離，而不易觀看顯示資訊。在本實施例中，由於顯示器5安裝於殼體之外表面，故自光電開關1之外緣至顯示器5之距離變短，而容易觀看顯示器5之顯示資訊。發光元件模組32與孔12等係設置於位於第一面旁邊之第二面之附近的投光部之一例。受光元件模組33與孔13係設置於位於第一面旁邊之第二面之附近的受光部之一例。調整按鈕9等係設置於第一面或顯示部上，為受理使用者操作的受理部之一例。控制器6係使顯示部顯示經由受理部調整之臨限值、及顯示由受光部接收到之光之量之信號值的顯示控制部之一例。控制基板30係被收容於殼體之內部而供安裝或連接顯示控制部的控制基板(第一基板)之一例。信號纜線51係連接控制基板30與顯示器5之信號纜線之一例。如圖6(A)至圖6(C)所示，顯示器5具有與信號纜線51連接之連接部。顯示器5之連接部在殼體之長邊方向少配置於顯示區域與信號纜線51之間。此外，如圖7(A)至圖7(C)及圖10等所示般，顯示器5可具有二個短邊及二個長邊，且在二個短邊中之一短邊之側連接有信號纜線51。藉此，提供一種可對於光電開關1之顯示器5確保充分之顯示面積的信號纜線51之連接構造。<Summary> As described using FIG. 1 and the like, the photoelectric switch 1 has a substantially rectangular parallelepiped housing. That is, the casing is elongated. The display 5 is installed on the outer surface of the casing and is an example of the display part on the first surface. Previously, because the display was accommodated inside the casing of the photoelectric switch, there was a distance from the outer surface of the casing to the display, making it difficult to view the displayed information. In this embodiment, since the display 5 is installed on the outer surface of the housing, the distance from the outer edge of the photoelectric switch 1 to the display 5 is shortened, and it is easy to view the information displayed on the display 5 . The light-emitting element module 32 and the hole 12 are an example of the light projecting part provided in the vicinity of the second surface next to the first surface. The light-receiving element module 33 and the hole 13 are an example of a light-receiving part disposed near the second surface next to the first surface. The adjustment button 9 etc. are provided on the 1st surface or a display part, and are an example of the receiving part which accepts a user's operation. The controller 6 is an example of a display control unit that causes the display unit to display the threshold value adjusted by the receiving unit and the signal value of the amount of light received by the light receiving unit. The control board 30 is an example of a control board (first board) housed inside the case and on which a display control unit is mounted or connected. The signal cable 51 is an example of a signal cable connecting the control board 30 and the display 5 . As shown in FIGS. 6(A) to 6(C), the display 5 has a connection portion to which a signal cable 51 is connected. The connecting portion of the display 5 is rarely arranged between the display area and the signal cable 51 in the longitudinal direction of the casing. In addition, as shown in Fig. 7 (A) to Fig. 7 (C) and Fig. 10 etc., display 5 can have two short sides and two long sides, and the side of one short side in two short sides is connected There is a signal cable 51 . Thereby, the connection structure of the signal cable 51 which can ensure sufficient display area with respect to the display 5 of the photoelectric switch 1 is provided.
顯示部可具有點矩陣顯示器、及驅動該點矩陣顯示器之驅動電路。顯示器5係點矩陣顯示器之一例。驅動IC 54係驅動電路之一例。如圖7(A)等所示，驅動IC 54設置於顯示器5之長邊方向之端部，連接有信號纜線51。即，驅動IC 54可在殼體之長邊方向上設置於顯示器5與連接部之間。此外，顯示器5與驅動IC 54亦可配置於同一構件上。根據圖7(A)，顯示器5之OLED層71與驅動IC 54配置於透明構件70上。The display unit may include a dot-matrix display and a drive circuit for driving the dot-matrix display. An example of a 5-series dot-matrix display. The driver IC 54 is an example of a driver circuit. As shown in FIG. 7(A) etc., the drive IC 54 is provided at the end of the display 5 in the longitudinal direction, and the signal cable 51 is connected thereto. That is, the driver IC 54 may be disposed between the display 5 and the connection portion in the longitudinal direction of the case. In addition, the display 5 and the driver IC 54 can also be disposed on the same component. According to FIG. 7(A), the OLED layer 71 and the driver IC 54 of the display 5 are disposed on the transparent member 70 .
如圖11(B)及圖11(C)所示，信號纜線51可具有連接顯示器5與驅動IC 54之第一部分、及連接驅動IC 54與控制基板30之第二部分。如圖10所示，信號纜線51可為FPC纜線。藉此，容易連接配置於殼體之外部之顯示器5與配置於殼體之內部之控制基板30。As shown in FIG. 11(B) and FIG. 11(C), the signal cable 51 may have a first part connecting the display 5 and the driver IC 54 and a second part connecting the driver IC 54 and the control substrate 30 . As shown in FIG. 10, the signal cable 51 may be an FPC cable. Thereby, it is easy to connect the display 5 arranged outside the casing and the control board 30 arranged inside the casing.
殼體可具有上外殼3及下外殼2。此情形時，第一面係上外殼3之上表面。The housing may have an upper shell 3 and a lower shell 2 . In this case, the first surface is fastened to the upper surface of the casing 3 .
根據本發明，開口部25設置於殼體之外表面、尤其是上表面。開口部25可將信號纜線51自殼體之內部朝外部配置，且可將顯示器5安裝於殼體之外表面。即，信號纜線51經由開口部25連接於控制基板30。由於顯示器5設置於殼體之外表面，故不易對使用者賦予顯示器5被較深地配置之印象。因而，對使用者而言容易觀察顯示器5。連接有信號纜線51之顯示器5之短邊之側可為顯示器5之二個短邊中遠離第二面(顯示器5之正面)之短邊之側。此時，開口部25可設置於脊骨構件36之後端側等。連接有信號纜線51之顯示器5之短邊之側可為顯示器5之二個短邊中靠近第二面(正面)之短邊之側。此時，開口部25可設置於脊骨構件36之前端側等。此外，上外殼3之脊骨構件36係由控制基板30支持。其有助於提高殼體之剛性。再者，藉由使脊骨構件36之厚度厚於上外殼3之其他部分之厚度，而提高上外殼3本身之構成。尤其是，藉由提高脊骨構件36之剛性，而容易保護顯示器5。According to the present invention, the opening 25 is provided on the outer surface, especially the upper surface, of the casing. The opening 25 can arrange the signal cable 51 from the inside of the housing to the outside, and can install the display 5 on the outer surface of the housing. That is, the signal cable 51 is connected to the control board 30 through the opening 25 . Since the display 5 is arranged on the outer surface of the casing, it is difficult to give the user the impression that the display 5 is arranged deeply. Therefore, it is easy for the user to observe the display 5 . The side of the short side of the display 5 connected with the signal cable 51 may be the side away from the short side of the second surface (the front of the display 5 ) among the two short sides of the display 5 . At this time, the opening portion 25 may be provided on the rear end side of the spine member 36 or the like. The side of the short side of the display 5 connected with the signal cable 51 can be the side close to the short side of the second surface (front side) among the two short sides of the display 5 . At this time, the opening portion 25 may be provided on the front end side of the spine member 36 or the like. In addition, the spine member 36 of the upper housing 3 is supported by the control board 30 . It helps to increase the rigidity of the housing. Furthermore, by making the thickness of the backbone member 36 thicker than that of other parts of the upper case 3, the configuration of the upper case 3 itself is improved. In particular, by increasing the rigidity of the backbone member 36, it is easy to protect the display 5. FIG.
如利用圖8(A)至圖8(E)等所說明般上外殼3之第一面(上表面)具有開口部25。開口部25作為用於將信號纜線51自殼體之外部朝內部通過的孔狀或缺口狀之通過部而發揮功能。如圖8(B)等所示，開口部25可為沿第一面之短邊方向(x軸方向)設置之狹槽。如圖8(E)等所示，開口部25可為沿第一面之長邊方向(z軸方向)設置之狹槽。如圖7(C)所示，驅動IC 54可被收容於殼體之內部。其削減顯示器5之搭載部之尺寸。如圖1等所示，顯示器5之長邊方向與第一面之長邊方向平行。As described with reference to FIG. 8(A) to FIG. 8(E) etc., the first surface (upper surface) of the upper case 3 has an opening 25 . The opening portion 25 functions as a hole-shaped or notch-shaped passing portion for passing the signal cable 51 from the outside of the housing toward the inside. As shown in FIG. 8(B) and the like, the opening 25 may be a slot provided along the short side direction (x-axis direction) of the first surface. As shown in FIG. 8(E) and the like, the opening 25 may be a slot provided along the long side direction (z-axis direction) of the first surface. As shown in FIG. 7(C), the driver IC 54 can be accommodated inside the casing. This reduces the size of the mounting portion of the display 5 . As shown in FIG. 1 and the like, the longitudinal direction of the display 5 is parallel to the longitudinal direction of the first surface.
如圖5等所示，作為保持設置於殼體之外表面之顯示器5之保持構件係採用罩構件4。藉此，可將顯示器5配置於殼體之外表面，對使用者而言容易觀察顯示在顯示器5之資訊。如此，藉由將罩構件4配置於殼體之外側，而可增大顯示器5之顯示區域。惟，若將顯示器5設置於殼體之外表面，則顯示器5容易接收來自外部之衝擊。因而，罩構件4具有保護顯示器5之作用。再者，如圖5及圖10等所示，屏蔽構件50係設置於顯示器5之側面之至少一部分之屏蔽構件之一例。如圖13等所示，罩構件4係在與顯示器5之側面之間夾入屏蔽構件50，至少遮蔽顯示器5之側面之至少一部分的罩構件之一例。如此，屏蔽構件50亦具有保護顯示器5免受衝擊之害之作用。As shown in FIG. 5 and the like, a cover member 4 is used as a holding member for holding the display 5 provided on the outer surface of the casing. Thereby, the display 5 can be arranged on the outer surface of the casing, and it is easy for the user to observe the information displayed on the display 5 . In this way, by arranging the cover member 4 outside the casing, the display area of the display 5 can be increased. However, if the display 5 is arranged on the outer surface of the housing, the display 5 can easily receive impact from the outside. Therefore, the cover member 4 functions to protect the display 5 . In addition, as shown in FIG. 5 and FIG. 10 etc., the shielding member 50 is an example of the shielding member provided in at least a part of the side surface of the display 5. As shown in FIG. As shown in FIG. 13 and the like, the cover member 4 is an example of a cover member that shields at least a part of the side surface of the display 5 by sandwiching a shield member 50 between the side surface of the display 5 . In this way, the shielding member 50 also has the function of protecting the display 5 from impact.
如圖5所示，罩構件4可具有使顯示器5之顯示區域露出之窗部40。罩構件4可構成為覆蓋顯示器5之非顯示區域。非顯示區域係顯示器5之上表面中不顯示資訊之部分。As shown in FIG. 5, the cover member 4 may have the window part 40 which exposes the display area of the display 5. As shown in FIG. The cover member 4 can be configured to cover a non-display area of the display 5 . The non-display area is a portion of the upper surface of the display 5 where information is not displayed.
位於罩構件4之窗部40之周圍之四個邊框中位於窗部40之長邊方向之端部的一個邊框(例：右邊框41b、左邊框41a)之粗細度粗於位於窗部40之短邊方向之兩端之二個邊框(例：前邊框41d、後邊框41c)之粗細度。其容易確保顯示器5之短邊方向之顯示面積。罩構件4可構成為與自第一面突出之突出部卡合。例如，自上外殼3之上表面突出之突出部(邊緣部47)可對於罩構件4之缺口46卡合。Among the four frames located around the window portion 40 of the cover member 4, one frame located at the end in the longitudinal direction of the window portion 40 (for example: right frame 41b, left frame 41a) is thicker than that located at the window portion 40. The thickness of the two frames (for example: front frame 41d, rear frame 41c) at both ends in the short side direction. It is easy to secure a display area in the short side direction of the display 5 . The cover member 4 may be configured to engage with a protrusion protruding from the first surface. For example, a protruding portion (edge portion 47 ) protruding from the upper surface of the upper case 3 can be engaged with the notch 46 of the cover member 4 .
屏蔽構件50可與信號纜線51之接地線電性連接。藉此，屏蔽構件50減輕電氣雜訊對顯示器5賦予之影響。The shielding member 50 can be electrically connected to the ground wire of the signal cable 51 . Thereby, the shielding member 50 reduces the influence of electrical noise on the display 5 .
如圖13所示般，上外殼3之第一面之短邊之長度大致等於顯示器5之短邊之長度、位於罩構件4之短邊方向之兩端之側面(中央腳43)之厚度、及屏蔽構件50(右壁50b、左壁50c)之厚度的和。藉此，可以屏蔽構件50保護顯示器5，且使顯示器5之短邊方向之長度接近光電開關1之上表面之短邊方向之長度。即，容易增大可顯示在顯示器5之文字之尺寸。As shown in Figure 13, the length of the short side of the first surface of the upper case 3 is approximately equal to the length of the short side of the display 5, the thickness of the side surfaces (central legs 43) located at both ends of the short side direction of the cover member 4, and the sum of the thicknesses of the shielding member 50 (right wall 50b, left wall 50c). Thereby, the shielding member 50 can protect the display 5 , and the length of the short side direction of the display 5 can be close to the length of the short side direction of the upper surface of the photoelectric switch 1 . That is, it is easy to increase the size of characters that can be displayed on the display 5 .
如圖10所示，信號纜線51與屏蔽構件50可為經一體化之FPC纜線。藉此，可削減零件數目。又，容易將朝屏蔽構件50之接地線與信號纜線51一體化。As shown in FIG. 10 , the signal cable 51 and the shielding member 50 may be an integrated FPC cable. Thereby, the number of parts can be reduced. In addition, it is easy to integrate the ground wire to the shield member 50 with the signal cable 51 .
如圖10及圖11(B)等所示，FPC纜線可在至少一處被彎折。再者，屏蔽構件50之一部分與信號纜線51之一部分可摺疊。As shown in FIG. 10 and FIG. 11(B) and the like, the FPC cable may be bent at least at one point. Furthermore, a portion of the shielding member 50 and a portion of the signal cable 51 are foldable.
屏蔽構件50可具有：覆蓋顯示器5之底面之第一區域(底部50a)、保護顯示器5之第一側面之第二區域(右壁50b)、保護顯示器5之第二側面之第三區域(左壁50c)、及保護顯示器5之第三側面之第四區域(前壁50d)。如圖10所示，第二區域、第三區域及第四區域可與前述第一區域連接。The shielding member 50 may have: a first area (bottom 50a) covering the bottom surface of the display 5, a second area (right wall 50b) protecting the first side of the display 5, a third area (left wall) protecting the second side of the display 5. wall 50c), and the fourth area (front wall 50d) protecting the third side of the display 5. As shown in FIG. 10, the second area, the third area, and the fourth area may be connected to the aforementioned first area.
上罩19係覆蓋受理部及由罩構件4遮蔽之顯示器5之開閉式之蓋之一例。藉此，在工廠中產生之油滴等不易附著於調整按鈕9或顯示器5。又，應該也不易產生調整按鈕9或顯示器5之破損。罩構件4係覆蓋顯示器5之一部分之罩，設置於殼體之第一面之外側。如圖6(B)及圖9(B)所示，在殼體之高度方向，罩構件4之上表面之高度與第一面中設置有受理部之面之高度可大致相同。The upper cover 19 is an example of an openable cover that covers the receiving unit and the display 5 covered by the cover member 4 . This makes it difficult for oil droplets or the like generated in the factory to adhere to the adjustment button 9 or the display 5 . Also, it should not be easy to cause damage to the adjustment button 9 or the display 5 . The cover member 4 is a cover that covers a part of the display 5 and is disposed outside the first surface of the casing. As shown in FIG. 6(B) and FIG. 9(B), in the height direction of the casing, the height of the upper surface of the cover member 4 may be substantially the same as the height of the first surface on which the receiving portion is provided.
如圖1等所示，開口部25可由罩構件4或顯示器5覆蓋。藉此，異物不易經由開口部25侵入殼體之內部。As shown in FIG. 1 and the like, the opening 25 may be covered by the cover member 4 or the display 5 . Thereby, foreign matters are less likely to enter the inside of the casing through the opening 25 .
可在位於窗部40之長邊方向之端部之一個邊框(例：後邊框41c)的表面記載文字。例如，當使用透過型光纖時，存在當檢測到工件時顯示燈24點亮之D-ON(Dark-ON，暗通)、或當檢測到工件時顯示燈24熄滅之L-ON(Light-ON，亮通)的動作模式。此時，顯示器5可顯示如指示印刷於後邊框41c之「L-ON」與「D-ON」任一者的標記(例：箭頭標記等)。由於顯示器5之後端與後邊框41c鄰接，故顯示器5可顯示與顯示於後邊框41c之資訊協作之顯示資訊。Characters can be written on the surface of one frame (for example: rear frame 41c ) located at the end of the window portion 40 in the longitudinal direction. For example, when a transmission type optical fiber is used, there are D-ON (Dark-ON, dark ON) in which the display lamp 24 is lit when a workpiece is detected, or L-ON (Light-ON) in which the display lamp 24 is extinguished when a workpiece is detected. ON, bright through) action mode. At this time, the display 5 may display a mark (such as an arrow mark, etc.) indicating any one of "L-ON" and "D-ON" printed on the rear frame 41c. Since the rear end of the display 5 is adjacent to the rear bezel 41c, the display 5 can display display information coordinated with the information displayed on the rear bezel 41c.
如圖7(A)所示，顯示器5可具有：透明構件(透明構件70)、設置於透明構件之下表面側之OLED(OLED層71)、及設置於OLED之下表面側之基材(透明基材72、脊骨構件36)。罩構件4設置為至少保護OLED層71。藉此，減輕OLED層71之破損及電氣雜訊之影響。As shown in FIG. 7(A), the display 5 may have: a transparent member (transparent member 70), an OLED (OLED layer 71) disposed on the lower surface side of the transparent member, and a substrate disposed on the lower surface side of the OLED ( transparent substrate 72, spine member 36). The cover member 4 is provided to protect at least the OLED layer 71 . Thereby, damage of the OLED layer 71 and influence of electrical noise are reduced.
如圖13所示，罩構件4之厚度薄於殼體(上外殼3及下外殼2)之厚度。藉此，可盡可能增長顯示器5之短邊方向之長度。又，可增大顯示器5之顯示面積，而可增大所顯示之文字之大小。As shown in FIG. 13, the thickness of the cover member 4 is thinner than that of the case (the upper case 3 and the lower case 2). Thereby, the length of the short side direction of the display 5 can be extended as much as possible. Also, the display area of the display 5 can be increased, and the size of the displayed characters can be increased.
如圖14所示，投光光纖22係將自第一發光元件91a輸出之光(檢測光)投光至工件81之通過區域(檢測區域80)之光纖模組。受光光纖23係接收來自通過區域之光之光纖模組。如圖19所示，受光元件92b設置於受光光纖23之一端側，接收自受光光纖23之另一端側入射且在受光光纖23中傳遞而來之光。控制器6與顯示燈24係基於受光元件92b輸出之受光信號輸出顯示有無工件81之資訊之輸出部之一例。第二發光元件91b係輸出光(輔助光)，且使該光入射至受光光纖23之一端側之發光元件之一例。擴散構件88作為設置於受光光纖23之頭部之顯示燈而發揮功能。擴散構件88設置於受光光纖23之另一端側，將自第二發光元件91b輸出且在受光光纖23中傳遞而來之光擴散。藉此，可使輔助光(顯示光)易於被使用者觀察到。As shown in FIG. 14 , the projecting optical fiber 22 is an optical fiber module for projecting the light (detection light) output from the first light emitting element 91 a to the passing region (detection region 80 ) of the workpiece 81 . The light-receiving optical fiber 23 is an optical fiber module that receives light from the passing area. As shown in FIG. 19 , the light-receiving element 92 b is disposed at one end of the light-receiving fiber 23 , and receives light incident from the other end of the light-receiving fiber 23 and transmitted through the light-receiving fiber 23 . The controller 6 and the display lamp 24 are an example of an output unit that outputs information indicating the presence or absence of the workpiece 81 based on the light receiving signal output from the light receiving element 92b. The second light emitting element 91 b is an example of a light emitting element that outputs light (auxiliary light) and makes the light incident on one end side of the light receiving fiber 23 . The diffusion member 88 functions as an indicator light provided at the head of the light receiving optical fiber 23 . The diffusing member 88 is provided at the other end side of the light-receiving fiber 23 , and diffuses the light output from the second light-emitting element 91 b and transmitted through the light-receiving fiber 23 . Thereby, the auxiliary light (display light) can be easily seen by the user.
擴散構件88既可對受光光纖23之安裝部86可拆裝地螺合，亦可嵌合。其帶來在擴散構件88污染或破損時可容易地更換擴散構件88之優點。又，擴散構件88可被螺紋固定於受光光纖23之安裝部86。又，擴散構件88可接著於受光光纖23之安裝部86。The diffusion member 88 may be detachably screwed to the mounting portion 86 of the light-receiving optical fiber 23 or may be fitted. This brings about the advantage that the diffusion member 88 can be easily replaced when the diffusion member 88 is contaminated or damaged. In addition, the diffusion member 88 may be screw-fixed to the mounting portion 86 of the light-receiving optical fiber 23 . In addition, the diffusion member 88 can be attached to the mounting portion 86 of the light-receiving optical fiber 23 .
如圖16(B)等所示，擴散構件88可為設置為覆蓋受光光纖23之另一端側之帽部。帽部可為中空，亦可為實心。帽部可具有：設置於受光光纖23之另一端側之筒狀構件88a、及設置於筒狀構件88a之內側之透明構件88b。又，可在筒狀構件88a之前端部設置蓋88c。蓋88c以除塵而發揮功能。As shown in FIG. 16(B) and the like, the diffusion member 88 may be a cap provided to cover the other end side of the light-receiving optical fiber 23 . The cap can be hollow or solid. The cap part may have: a cylindrical member 88a provided on the other end side of the light-receiving optical fiber 23, and a transparent member 88b provided inside the cylindrical member 88a. In addition, a cover 88c may be provided at the front end of the cylindrical member 88a. The cover 88c functions to remove dust.
如圖14(A)所示，可以投光光纖22之光之出射端與供自投光光纖22之出射端輸出之光入射的受光光纖23之入射端對向之方式配置投光光纖22與受光光纖23。此種光電開關1被稱為透過型光纖感測器。如圖14(B)及圖14(C)所示，可以自投光光纖22之出射端輸出之光由工件或反射構件反射而入射至受光光纖23之另一端側之方式配置投光光纖22與受光光纖23。此種光電開關1被稱為反射型光纖感測器。As shown in Figure 14 (A), the light-emitting end of the light-emitting optical fiber 22 and the incident end of the light-receiving optical fiber 23 for the light output from the outgoing end of the projecting optical fiber 22 can be arranged in the opposite manner. Light-receiving optical fiber 23. This kind of photoelectric switch 1 is called a transmission type optical fiber sensor. As shown in FIG. 14(B) and FIG. 14(C), the light output from the output end of the light-emitting fiber 22 can be reflected by the workpiece or the reflection member and then incident on the other end side of the light-receiving fiber 23. The light-emitting fiber 22 can be arranged. With light-receiving optical fiber 23. This kind of photoelectric switch 1 is called a reflective fiber optic sensor.
如圖17(B)及圖18(A)等所示，投光光纖22與受光光纖23可形成單一之光纖纜線。此時，如圖17(C)所示，投光光纖22之出射端與受光光纖23之另一端側相鄰地配置。可在投光光纖22與受光光纖23之間設置遮光板99。藉此，在投光光纖22中傳遞之檢測光不會朝受光光纖23洩漏。如圖17(D)及圖18(A)等所示，擴散構件88可以不覆蓋投光光纖22之出射端且覆蓋受光光纖23之另一端側之方式固定於光纖纜線。As shown in FIG. 17(B) and FIG. 18(A), the projecting optical fiber 22 and the receiving optical fiber 23 can form a single optical fiber cable. At this time, as shown in FIG. 17(C), the output end of the projecting optical fiber 22 is arranged adjacent to the other end side of the receiving optical fiber 23 . A light-shielding plate 99 may be provided between the light-emitting optical fiber 22 and the light-receiving optical fiber 23 . Thereby, the detection light transmitted through the light-emitting optical fiber 22 does not leak toward the light-receiving optical fiber 23 . As shown in FIG. 17(D) and FIG. 18(A), the diffusion member 88 may be fixed to the optical fiber cable so as not to cover the output end of the projecting fiber 22 but to cover the other end of the receiving fiber 23 .
擴散構件88可接著於設置在受光光纖23之前端附近之安裝部86。另一方面，可行的是，擴散構件88可拆裝地安裝於設置在受光光纖23之前端附近之安裝部86。可行的是，擴散構件88可拆裝地螺合或嵌合於安裝部86。藉由可拆裝擴散構件88，而可容易地更換污染或破損之擴散構件88。The diffusion member 88 can be attached to the mounting portion 86 provided near the front end of the light-receiving optical fiber 23 . On the other hand, it is possible that the diffusion member 88 is detachably attached to the attachment portion 86 provided near the front end of the light receiving optical fiber 23 . It is possible that the diffusion member 88 is detachably screwed or fitted to the mounting portion 86 . By detachable diffusion member 88, a contaminated or damaged diffusion member 88 can be easily replaced.
根據本發明提供一種用於透過型光纖感測器或反射型光纖感測器之受光光纖23。再者，亦提供一種光纖感測器用擴散構件88。According to the present invention, a light-receiving optical fiber 23 for a transmission-type optical fiber sensor or a reflection-type optical fiber sensor is provided. Furthermore, a diffusion member 88 for an optical fiber sensor is also provided.
如圖15(A)等所示，投光光纖22之保持部85及受光光纖23之保持部85可分別作為獨立之朝外部之安裝部而發揮功能。由於透過型光纖感測器配置為投光光纖22與受光光纖23對向，故投光光纖22與受光光纖23獨立。因而，可行的是，投光光纖22之保持部85安裝於第一支持構件，受光光纖23之保持部85安裝於第二支持構件。As shown in FIG. 15(A) etc., the holding part 85 of the light emitting fiber 22 and the holding part 85 of the light receiving fiber 23 can function as independent mounting parts facing the outside respectively. Since the transmission optical fiber sensor is configured such that the light-emitting optical fiber 22 and the light-receiving optical fiber 23 face each other, the light-emitting optical fiber 22 and the light-receiving optical fiber 23 are independent. Therefore, it is feasible that the holding portion 85 of the projecting optical fiber 22 is attached to the first supporting member, and the holding portion 85 of the receiving optical fiber 23 is attached to the second supporting member.
如圖17(D)等所示，在反射型光纖感測器中，投光光纖22及受光光纖23分別具有被一體地安裝於外部之安裝部(保持部85)。即，保持部85安裝於支持構件。該等支持構件可為夾持保持部85之夾持器等。As shown in FIG. 17(D) and the like, in the reflective optical fiber sensor, the projecting optical fiber 22 and the receiving optical fiber 23 each have an attachment portion (holding portion 85 ) integrally attached to the outside. That is, the holding portion 85 is attached to the supporting member. These supporting members may be clampers or the like for clamping the holding portion 85 .
