TWM634097U

TWM634097U - Presence detection device

Info

Publication number: TWM634097U
Application number: TW111207324U
Authority: TW
Inventors: 何玉釧
Original assignee: 鈺皓實業股份有限公司
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-11-11

Abstract

本創作提供一種在席檢測裝置，其應用於升降機，升降機具有牙叉，牙叉能承載物品；在席檢測裝置包含：感應器及操控器，設置於牙叉，感應器能偵測牙叉是否承載物品，當感應器偵測牙叉承載物品時，感應器產生在席訊號；操控器設置於升降機，操控器連結牙叉且與感應器耦接，其中，操控器接收到感應器所傳送之在席訊號時，操控器能驅使牙叉承載物品進行升降搬運作業；藉此，能夠確定在物品穩固放置於牙叉後，再進行升降搬運作業，以提升搬運作業之安全性。This creation provides a presence detection device, which is applied to an elevator. The lift has a fork, which can carry objects; the presence detection device includes: a sensor and a controller, which are set on the fork, and the sensor can detect whether the fork Carrying objects, when the sensor detects that the fork is carrying an object, the sensor generates a presence signal; the controller is installed on the elevator, and the controller is connected to the fork and coupled with the sensor, wherein the controller receives the information sent by the sensor When the signal is on, the controller can drive the fork to carry the object to carry out the lifting operation; by this, it can be confirmed that the object is placed firmly on the tooth fork before the lifting operation is carried out, so as to improve the safety of the handling operation.

Description

在席檢測裝置Presence detection device

本創作係關於一種檢測相關領域，尤指一種應用於檢測升降機之牙叉是否承載有物品之在席檢測裝置。 The invention relates to a detection-related field, in particular to a presence detection device used to detect whether a tooth fork of an elevator is loaded with objects.

請參閱圖1所示，一般生產製造工廠為了方便輸送與存取，通常需要透過升降裝置200，將位於天花板附近或較地板面高位置之產品300(例如：半導體產品或化學物品)進行搬送。 Please refer to FIG. 1 , in order to facilitate transportation and access in general manufacturing plants, products 300 (such as semiconductor products or chemicals) located near the ceiling or higher than the floor are usually transported through the lifting device 200 .

當需要將產品300移動至升降裝置200進行搬運作業時，通常是由操作人員以人工判斷方式，確認產品300有無放置於牙叉400上，但無法精準確認產品300是否有穩定放置於牙叉400；若產品300未穩定放置於牙叉400上，便進行搬運作業，則會造成運輸過程之不平穩，甚至可能在搬運過程中，因產品300未穩固於牙叉400，而造成產品300滑落牙叉400，導致產品300受損或是造成操作人員受傷；因此，現有升降裝置200存在搬運作業之安全隱憂。 When it is necessary to move the product 300 to the lifting device 200 for handling operations, the operator usually uses manual judgment to confirm whether the product 300 is placed on the tooth fork 400, but it is impossible to accurately confirm whether the product 300 is placed stably on the tooth fork 400 If the product 300 is not stably placed on the tooth fork 400, then the handling operation will be carried out, which will cause the transportation process to be unstable, and may even cause the product 300 to slip off the teeth during the handling process because the product 300 is not firmly placed on the tooth fork 400 The fork 400 will cause damage to the product 300 or cause injury to the operator; therefore, the existing lifting device 200 has hidden dangers in the safety of the handling operation.

為解決上述課題，本創作提供一種在席檢測裝置，能夠在確定物品穩固放置於牙叉後，再進行升降搬運作業，以提升搬運作業之安全性。 In order to solve the above problems, this invention provides a presence detection device, which can carry out the lifting operation after confirming that the object is placed firmly on the tooth fork, so as to improve the safety of the transportation operation.

本創作之一項實施例提供一種在席檢測裝置，其應用於一升降機，升降機具有一牙叉，牙叉能承載一物品；在席檢測裝置包含：一感應器，其設置於牙叉，感應器能偵測牙叉是否承載物品，當感應器偵測牙叉承載物品時，感應器產生一在席訊號；以及一操控器，其設置於升降機，操控器連結牙叉且與感應器耦接，其中，操控器接收到感應器所傳送之在席訊號時，操控器能驅使牙叉承載物品進行升降搬運作業。 One embodiment of the present invention provides a presence detection device, which is applied to an elevator, The elevator has a tooth fork, which can carry an object; the presence detection device includes: a sensor, which is arranged on the tooth fork, and the sensor can detect whether the tooth fork carries an object. When the sensor detects that the tooth fork carries an object , the sensor generates a presence signal; and a controller, which is arranged on the elevator, the controller is connected to the tooth fork and coupled with the sensor, wherein, when the controller receives the presence signal transmitted by the sensor, the controller can Drive the tooth fork to carry the goods for lifting and handling operations.

於其中一項實施例中，牙叉具有一叉桿，叉桿之內部具有一容置空間；感應器具有一作用件及一偵測模組，作用件樞設於叉桿之容置空間，作用件之一端露出於容置空間；物品放置於牙叉之叉桿時，作用件受物品抵壓而樞擺，偵測模組會偵測到作用件之樞擺變化而產生在席訊號。 In one of the embodiments, the dental fork has a fork rod, and the interior of the fork rod has a housing space; One end of the part is exposed in the accommodation space; when an object is placed on the fork rod of the dental fork, the active part is pressed by the object and pivots, and the detection module will detect the pivotal change of the active part and generate a presence signal.

於其中一項實施例中，偵測模組以光、光電、磁場其中之一或及其組合的方式感應作用件之樞擺變化。 In one of the embodiments, the detection module senses the pivotal change of the active part by means of light, photoelectricity, magnetic field or a combination thereof.

於其中一項實施例中，叉桿之頂面用於承載物品，叉桿之頂面一端開設有一通孔，作用件之一端常態性露出通孔。 In one of the embodiments, the top surface of the fork rod is used to carry articles, and one end of the top surface of the fork rod is provided with a through hole, and one end of the active part is normally exposed through the through hole.

於其中一項實施例中，感應器更具有一復位件，復位件之兩端分別抵接於作用件與叉桿，復位件常態性抵推作用件之一端露出通孔。 In one of the embodiments, the sensor further has a reset part, and the two ends of the reset part abut against the action part and the fork rod respectively, and the reset part normally pushes one end of the action part to expose the through hole.

於其中一項實施例中，叉桿之容置空間設有一立板，作用件樞設於立板。 In one of the embodiments, the accommodating space of the fork rod is provided with a vertical plate, and the active part is pivotally arranged on the vertical plate.

於其中一項實施例中，作用件具有一壓部、一身部及一感測部，身部設於壓部與感測部之間，身部樞設於立板，壓部常態性被復位件抵推露出通孔，感測部鄰近偵測模組。 In one of the embodiments, the active part has a pressure part, a body part and a sensing part, the body part is set between the pressure part and the sensing part, the body part is pivotally set on the vertical plate, and the pressure part is normally reset The through hole is exposed by the component resistance, and the sensing part is adjacent to the detection module.

於其中一項實施例中，壓部具有相反設置之一第一面及一第二面，第一面常態性抵接於叉桿之內壁，第一面凸設有一接觸塊，接觸塊能露出通孔，復位件之一端抵接於第二面。 In one of the embodiments, the pressing portion has a first surface and a second surface oppositely arranged, the first surface normally abuts against the inner wall of the fork rod, and a contact block is protruded from the first surface, and the contact block can exposed through-holes, One end of the reset member abuts against the second surface.

於其中一項實施例中，第二面凹設一凹槽，凹槽卡接立板。 In one of the embodiments, a groove is recessed on the second surface, and the groove is engaged with the vertical plate.

於其中一項實施例中，牙叉具有一叉桿，叉桿之頂面用於承載物品；感應器為壓力感應器，感應器設置於叉桿之頂面。 In one of the embodiments, the dental fork has a fork rod, and the top surface of the fork rod is used to carry objects; the sensor is a pressure sensor, and the sensor is arranged on the top surface of the fork rod.

藉由上述，本創作之感應器能夠在確定物品穩固放置於牙叉後，產生在席訊號，而操控器在接收到在席訊號後，再控制牙叉進行升降搬運作業，如此一來，能夠有效避免物品未穩定放置就進行搬運作業之安全隱憂，以提升搬運作業之安全性。 Based on the above, the sensor of this invention can generate a presence signal after confirming that the object is placed firmly on the tooth fork, and the controller can control the tooth fork to carry out the lifting operation after receiving the presence signal. In this way, it can Effectively avoid the potential safety hazards of handling operations when items are not placed stably, so as to improve the safety of handling operations.

<習知> <knowledge>

200:升降裝置 200: lifting device

300:產品 300: product

400:牙叉 400: tooth fork

<本創作> <this creation>

1:升降機 1: lift

2:牙叉 2: tooth fork

3:物品 3: Items

4:叉桿 4: fork rod

5:容置空間 5:Accommodating space

6:頂面 6: top surface

7:立板 7: Riser

8:通孔 8: Through hole

10:感應器 10: Sensor

11:作用件 11: Functional parts

111:壓部 111: pressure part

112:身部 112: body

113:感測部 113: Sensing unit

114:第一面 114: first side

115:第二面 115: The second side

116:接觸塊 116: contact block

117:凹槽 117: Groove

12:復位件 12: Reset piece

13:偵測模組 13: Detection module

20:操控器 20: Manipulator

圖1係習知立體外觀示意圖。 Fig. 1 is a schematic diagram of a conventional three-dimensional appearance.

圖2係本創作立體外觀示意圖，表示設置於升降機之牙叉。 Fig. 2 is a schematic diagram of the three-dimensional appearance of this creation, showing the tooth fork arranged on the elevator.

圖3係本創作感應器裝設於牙叉之第一實施例示意圖(一)，表示牙叉未承載物品。 Fig. 3 is a schematic diagram (1) of the first embodiment in which the inventive sensor is installed on the tooth fork, showing that the tooth fork does not carry objects.

圖4係本創作感應器裝設於牙叉之第一實施例剖面示意圖(一)，表示牙叉尚未承載物品。 Fig. 4 is a schematic cross-sectional view (1) of the first embodiment of the inventive sensor installed on the tooth fork, showing that the tooth fork has not yet carried objects.

圖5係本創作沿圖3之5-5剖面線所取剖面示意圖，表示牙叉未承載物品。 Fig. 5 is the schematic sectional view taken along the section line 5-5 of Fig. 3 of this creation, showing that the tooth fork does not carry objects.

圖6係本創作感應器裝設於牙叉之第一實施例剖面示意圖(三)，表示牙叉承載物品。 Fig. 6 is the schematic cross-sectional view (3) of the first embodiment of the invention in which the sensor is installed on the tooth fork, showing that the tooth fork carries objects.

圖7係本創作感應器裝設於牙叉之第一實施例剖面示意圖(四)，表示牙叉承載物品。 Fig. 7 is the schematic cross-sectional view (four) of the first embodiment of the invention in which the sensor is installed on the tooth fork, showing that the tooth fork carries objects.

圖8係本創作感應器裝設於牙叉之第二實施例示意圖。 Fig. 8 is the schematic diagram of the second embodiment in which the inventive sensor is installed on the dental fork.

為便於說明本創作於上述新型內容一欄中所表示的中心思想，茲以具體實施例表達。實施例中各種不同物品係按適於說明之比例、尺寸、變形量或位移量而描繪，而非按實際元件的比例予以繪製。 For ease of explanation, the central idea expressed in the above-mentioned novel content column of this creation is hereby expressed with specific embodiments. Various items in the embodiments are drawn in proportions, sizes, deformations or displacements suitable for illustration, rather than drawn in proportion to actual components.

本創作所提到的方向用語，例如「上」、「下」、「前」、「後」、「左」、「右」、「內」、「外」、「側面」等，僅是圖式的方向；因此，使用的方向用語是用以說明及理解本創作，而非用以限制本創作，合先敘明。 The directional terms mentioned in this creation, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only illustrations The direction of the formula; therefore, the directional terms used are used to explain and understand the creation, not to limit the creation, and are described first.

請參閱圖2至圖8所示，本創作提供一種在席檢測裝置，其應用於一升降機1，升降機1具有一牙叉2，牙叉2能承載一物品3，其中，牙叉2具有一叉桿4，叉桿4之內部具有一容置空間5，叉桿4之頂面6用於承載物品3，於本創作實施例中，叉桿4的數量為兩個。 Please refer to Fig. 2 to Fig. 8, the invention provides a kind of presence detection device, which is applied to an elevator 1, the elevator 1 has a tooth fork 2, and the tooth fork 2 can carry an article 3, wherein the tooth fork 2 has a The fork rod 4 has an accommodating space 5 inside the fork rod 4 , and the top surface 6 of the fork rod 4 is used to carry the article 3 . In this creative embodiment, the number of the fork rod 4 is two.

本創作在席檢測裝置包含：一感應器10，其設置於牙叉2之叉桿4，感應器10能偵測牙叉2是否承載物品3，其中，當感應器10偵測牙叉2承載物品3時，感應器10會產生一在席訊號，感應器10能夠將在席訊號向外傳送；於本創作實施例中，感應器10的數量為兩個，兩感應器10分別設置於兩叉桿4。 The presence detection device of this invention includes: a sensor 10, which is arranged on the fork rod 4 of the tooth fork 2, and the sensor 10 can detect whether the tooth fork 2 is carrying an article 3, wherein When article 3, sensor 10 can produce a seat signal, and sensor 10 can outwardly transmit signal of seat; Fork lever 4.

請參閱圖2至圖7所示，於本創作第一實施例中，每一叉桿4之容置空間5內立設有一立板7，每一叉桿4之頂面6一端開設有一通孔8，而通孔8與容置空間5連通；感應器10具有一作用件11、一復位件12及一偵測模組13，作用件11樞設於叉桿4之容置空間5內的立板7上，復位件12之兩端分別抵接於作用件11與叉桿4，復位件12常態性抵推作用件11，使作用件11 之一端常態性經由通孔8露出於容置空間5；於本創作實施例中，復位件12為壓縮彈簧。 Please refer to Fig. 2 to Fig. 7, in the first embodiment of the present invention, a vertical plate 7 is erected in the accommodating space 5 of each fork bar 4, and one end of the top surface 6 of each fork bar 4 is opened. hole 8, and the through hole 8 communicates with the accommodating space 5; the sensor 10 has an active part 11, a reset part 12 and a detection module 13, and the active part 11 is pivotally arranged in the accommodating space 5 of the fork bar 4 On the vertical plate 7, the two ends of the reset part 12 respectively abut against the active part 11 and the fork lever 4, and the reset part 12 normally pushes against the active part 11, so that the active part 11 One end is normally exposed to the accommodating space 5 through the through hole 8; in the present invention, the reset member 12 is a compression spring.

再者，作用件11具有一壓部111、一身部112及一感測部113，身部112設於壓部111與感測部113之間，身部112樞設於立板7，壓部111常態性被復位件12抵推露出通孔8，感測部113鄰近偵測模組13；其中，壓部111具有相反設置之一第一面114及一第二面115，第一面114常態性抵接於叉桿4之內壁，而第一面114凸設有一接觸塊116，接觸塊116能露出通孔8；復位件12之一端抵接於第二面115，而第二面115凹設一凹槽117，凹槽117卡接立板7，如此一來，作用件11之壓部111能夠被限制於叉桿4之容置空間5，且在被物品3抵壓時能夠藉由凹槽117卡接於立板7，而不產生脫離或歪斜；於本實例中，接觸塊116之外形與通孔8之外形匹配。 Furthermore, the effect member 11 has a pressure portion 111, a body portion 112 and a sensing portion 113, the body portion 112 is arranged between the pressure portion 111 and the sensing portion 113, the body portion 112 is pivotally arranged on the vertical plate 7, and the pressure portion 111 is normally pushed by the reset member 12 to expose the through hole 8, and the sensing part 113 is adjacent to the detection module 13; wherein, the pressing part 111 has a first surface 114 and a second surface 115 oppositely arranged, and the first surface 114 Normally abut against the inner wall of the fork rod 4, and the first surface 114 is provided with a contact block 116, which can expose the through hole 8; one end of the reset member 12 abuts against the second surface 115, and the second surface 115 is recessed with a groove 117, and the groove 117 is clamped to the vertical plate 7. In this way, the pressure part 111 of the action member 11 can be limited to the accommodation space 5 of the fork rod 4, and can be pressed against by the article 3. The groove 117 is clamped to the vertical plate 7 without detachment or skewing; in this example, the shape of the contact block 116 matches the shape of the through hole 8 .

於本創作第一實施例中，當物品3穩定放置於牙叉2之叉桿4時，作用件11之一端受物品3穩定抵壓而產生樞擺(反之，當物品3未穩定放置於牙叉2，物品3之重量無法使作用件11)，而偵測模組13會偵測到作用件11之樞擺變化因而產生在席訊號；其中，偵測模組13能夠以光、光電、磁場其中之一或及其組合的方式感應作用件11之樞擺變化。 In the first embodiment of the present creation, when the article 3 is stably placed on the fork bar 4 of the dental fork 2, one end of the active part 11 is stably pressed by the article 3 to generate a pivot (conversely, when the article 3 is not stably placed on the tooth fork Fork 2, the weight of article 3 can't make effect member 11), and detection module 13 can detect the pivotal swing change of effect member 11 and thus produce seat signal; Wherein, detection module 13 can use light, photoelectricity, One of the magnetic fields or a combination thereof can induce the pivotal change of the active member 11 .

請參閱圖8所示，於本創作第二實施例中，感應器10為壓力感應器10，感應器10設置於叉桿4之頂面6，其中，於本實施例中，當物品3放置於牙叉2並抵壓於感應器10時，感應器10會對應產生壓力值，一旦物品3穩定放置於牙叉2時，物品3抵壓感應器10所產生之壓力值便會超過感應器10所設定的門檻閾值，此時感應器10會對應產生在席訊號。 Please refer to Fig. 8, in the second embodiment of the present invention, the sensor 10 is a pressure sensor 10, and the sensor 10 is arranged on the top surface 6 of the fork bar 4, wherein, in this embodiment, when the object 3 is placed When the tooth fork 2 is pressed against the sensor 10, the sensor 10 will generate a corresponding pressure value. Once the object 3 is placed on the tooth fork 2 stably, the pressure value generated by the object 3 pressing the sensor 10 will exceed the sensor 10, the sensor 10 will generate a presence signal accordingly.

另外，於本創作其它實施例中，感應器10所產生的壓力值會持續向外傳送，而接收端會設定門檻閾值，一旦感應器10所傳送之壓力值超過接收端所設定之門檻閾值時，則接收端會判定感應器10產生在席訊號。 In addition, in other embodiments of the present invention, the pressure value generated by the sensor 10 will keep Continue to transmit outward, and the receiving end will set the threshold value. Once the pressure value transmitted by the sensor 10 exceeds the threshold value set by the receiving end, the receiving end will determine that the sensor 10 generates a presence signal.

一操控器20，其設置於升降機1，操控器20連結牙叉2且與感應器10耦接，操控器20能夠控制牙叉2進行升降搬運作業，其中，當操控器20接收到感應器10所傳送之在席訊號時，操控器20能驅使牙叉2承載物品3進行升降搬運作業。 A manipulator 20, which is arranged on the elevator 1, the manipulator 20 is connected with the fork 2 and coupled with the sensor 10, the manipulator 20 can control the fork 2 to carry out the lifting operation, wherein, when the manipulator 20 receives the sensor 10 When the presence signal is transmitted, the controller 20 can drive the tooth fork 2 to carry the object 3 for lifting and transporting operations.

需特別說明的是，操控器20在未接收到在席訊號前，操控器20處於斷電階段，此時操控人員無法直接由操控器20控制牙叉2進行升降搬運作業；而當操控器20接收到在席訊號後，操控器20處於通電階段，此時操控人員能夠由操控器20控制牙叉2進行升降搬運作業。 It should be noted that before the manipulator 20 receives the presence signal, the manipulator 20 is in the power-off stage. At this time, the manipulator cannot directly control the dental fork 2 to carry out the lifting operation through the manipulator 20; and when the manipulator 20 After receiving the presence signal, the controller 20 is in the power-on stage, at this time, the operator can control the dental fork 2 by the controller 20 to perform lifting and transporting operations.

於本創作實施例中，操控器20需要在同時接收到兩牙叉2上裝設的感應器10所傳送的在席訊號，操控器20才能驅使牙叉2承載物品3進行升降搬運作業。 In this creative embodiment, the manipulator 20 needs to receive the presence signal sent by the sensors 10 installed on the two forks 2 at the same time, so that the manipulator 20 can drive the forks 2 to carry the objects 3 for lifting and transporting operations.

因此，本創作透過智能化的準確偵測方式，在確定物品3穩固放置於牙叉2後產生在席訊號，而操控器20在接收到在席訊號後，再控制牙叉2進行升降搬運作業，如此一來，透過操控器20於通電與斷電兩階段間的防護機制，能夠有效避免物品3未穩定放置就進行搬運作業之安全隱憂，以提升搬運作業之安全性。 Therefore, this creation uses an intelligent and accurate detection method to generate a presence signal after confirming that the object 3 is firmly placed on the dental fork 2, and the controller 20 controls the dental fork 2 to carry out the lifting operation after receiving the presence signal. In this way, through the protection mechanism of the controller 20 between the power-on and power-off stages, it is possible to effectively avoid the potential safety hazards of the handling operation when the object 3 is not placed stably, so as to improve the safety of the handling operation.

以上所舉實施例僅用以說明本創作而已，非用以限制本創作之範圍。舉凡不違本創作精神所從事的種種修改或變化，俱屬本創作意欲保護之範疇。 The above-mentioned embodiments are only used to illustrate the creation, and are not intended to limit the scope of the creation. All modifications or changes that do not violate the spirit of this creation belong to the scope of protection intended by this creation.

1:升降機 1: lift

2:牙叉 2: tooth fork

3:物品 3: Items

4:叉桿 4: fork rod

6:頂面 6: top surface

10:感應器 10: Sensor

20:操控器 20: Manipulator

Claims

一種在席檢測裝置，其應用於一升降機，該升降機具有一牙叉，該牙叉能承載一物品；該在席檢測裝置包含：一感應器，其設置於該牙叉，該感應器能偵測該牙叉是否承載該物品，當該感應器偵測該牙叉承載該物品時，該感應器產生一在席訊號；以及一操控器，其設置於該升降機，該操控器連結該牙叉且與該感應器耦接，其中，該操控器接收到該感應器所傳送之該在席訊號時，該操控器能驅使該牙叉承載該物品進行升降搬運作業。 A presence detection device, which is applied to an elevator, the lift has a tooth fork, the tooth fork can carry an article; the presence detection device includes: a sensor, which is arranged on the tooth fork, the sensor can detect whether the tooth fork carries the article, and when the sensor detects that the tooth fork carries the article, the sensor generates a presence signal; and A manipulator, which is installed on the elevator, the manipulator is connected to the tooth fork and coupled with the sensor, wherein, when the manipulator receives the presence signal transmitted by the sensor, the manipulator can drive the The tooth fork carries the item for lifting and handling operations.

如請求項1所述之在席檢測裝置，其中，該牙叉具有一叉桿，該叉桿之內部具有一容置空間；該感應器具有一作用件及一偵測模組，該作用件樞設於該叉桿之容置空間，該作用件之一端露出於該容置空間；該物品放置於該牙叉之叉桿時，該作用件受該物品抵壓而樞擺，該偵測模組會偵測到該作用件之樞擺變化而產生該在席訊號。The presence detection device as described in Claim 1, wherein, the dental fork has a fork bar, and the interior of the fork bar has a housing space; the sensor has an active part and a detection module, and the active part pivots Set in the accommodating space of the fork, one end of the active part is exposed in the accommodating space; when the object is placed on the fork of the fork, the active part is pressed by the object and pivots, and the detection module The group will detect the pivot change of the active part and generate the presence signal.

如請求項2所述之在席檢測裝置，其中，該偵測模組以光、光電、磁場其中之一或及其組合的方式感應該作用件之樞擺變化。The presence detection device as described in Claim 2, wherein the detection module senses the pivotal change of the active part by means of light, photoelectricity, magnetic field or a combination thereof.

如請求項2或3所述之在席檢測裝置，其中，該叉桿之頂面用於承載該物品，該叉桿之頂面一端開設有一通孔，該作用件之一端常態性露出該通孔。The presence detection device as described in claim 2 or 3, wherein the top surface of the fork rod is used to carry the article, one end of the top surface of the fork rod is provided with a through hole, and one end of the active part is normally exposed to the through hole. hole.

如請求項4所述之在席檢測裝置，其中，該感應器更具有一復位件，該復位件之兩端分別抵接於該作用件與該叉桿，該復位件常態性抵推該作用件之一端露出該通孔。The presence detection device as described in Claim 4, wherein, the sensor further has a reset member, and the two ends of the reset member abut against the action member and the fork lever respectively, and the reset member normally resists the action One end of the piece exposes the through hole.

如請求項5所述之在席檢測裝置，其中，該叉桿之容置空間設有一立板，該作用件樞設於該立板。The presence detection device as described in claim 5, wherein a vertical plate is provided in the accommodating space of the fork bar, and the active member is pivotally arranged on the vertical plate.

如請求項6所述之在席檢測裝置，其中，該作用件具有一壓部、一身部及一感測部，該身部設於該壓部與該感測部之間，該身部樞設於該立板，該壓部常態性被該復位件抵推露出該通孔，該感測部鄰近該偵測模組。The presence detecting device as described in Claim 6, wherein, the active part has a pressure part, a body part and a sensing part, the body part is arranged between the pressure part and the sensing part, and the body part is pivotally Located on the vertical plate, the pressure part is normally pushed by the reset member to expose the through hole, and the sensing part is adjacent to the detection module.

如請求項7所述之在席檢測裝置，其中，該壓部具有相反設置之一第一面及一第二面，該第一面常態性抵接於該叉桿之內壁，該第一面凸設有一接觸塊，該接觸塊能露出該通孔，該復位件之一端抵接於該第二面。The presence detection device as described in Claim 7, wherein, the pressure portion has a first surface and a second surface oppositely arranged, the first surface normally abuts against the inner wall of the fork rod, and the first A contact block is protruded from the surface, and the contact block can expose the through hole, and one end of the reset member abuts against the second surface.

如請求項8所述之在席檢測裝置，其中，該第二面凹設一凹槽，該凹槽卡接該立板。The presence detection device according to claim 8, wherein a groove is recessed on the second surface, and the groove is engaged with the vertical plate.

如請求項1所述之在席檢測裝置，其中，該牙叉具有一叉桿，該叉桿之頂面用於承載該物品；該感應器為壓力感應器，該感應器設置於該叉桿之頂面。The presence detection device as described in Claim 1, wherein the tooth fork has a fork bar, the top surface of the fork bar is used to carry the article; the sensor is a pressure sensor, and the sensor is arranged on the fork bar the top surface.